• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    SECONDARY BATTERY ASSEMBLY. The description presented in this report consists of a secondary battery pack containing an anode terminal and a cathode terminal formed on one face with a sealed excess portion and a protection circuit module (PCM) electrically connected to a battery cell via the anode terminal and cathode terminal, the PCM including a board having a protection circuit formed therein, with the board being provided having an anode terminal connecting part and a cathode terminal connecting part connected, respectively. , to the anode terminal and the cathode terminal, and a PCM compartment configured to admit the board through an open face thereof, so that the PCM compartment surrounds the board. The board is connected to the anode terminal and cathode terminal of the battery cell via the anode terminal connection part and cathode terminal connection part, with the board being disposed in the PCM compartment in a condition where the board comes to be parallel next to the battery cell, and the PCM compartment, where the (...).
    公开号:BR112014003053B1
    申请号:R112014003053-7
    申请日:2012-08-01
    公开日:2021-06-08
    发明作者:Jong Woon Choi；Seog Jin Yoon；Migeum CHOI
    申请人:Lg Chem, Ltd；
    IPC主号:
    专利说明:

    Technical Field The present invention relates to a secondary battery pack. Technical Fundamentals
    [001] As there has been a progressive increase regarding mobile devices, with the growth in demand for such mobile devices, there has also been a decisive increase in the demand for secondary batteries. Among the types of secondary batteries are secondary lithium batteries exhibiting a high energy density and operating voltage with excellent preservation and service life characteristics, which have been widely used as a power source for various electronic products, as well as for different models of mobile devices.
    [002] Depending on the types of devices where secondary batteries are used, secondary batteries can be configured to incorporate a type of removable structure where secondary batteries can be easily inserted and removed from external devices or can incorporate a built-in type structure where the secondary batteries are embedded in the devices. For example, the secondary batteries used in conventional mobile devices are configured to present a removable type structure where it is possible for the user to insert or remove the battery inside or from each device. On the other hand, the secondary batteries used in these devices, such as some types of portable headphones, tablet PCs, and smart models, can be configured to have a built-in type structure.
    [003] Lithium secondary batteries are widely used in the form of secondary batteries. Each of the secondary batteries includes an anode terminal and a cathode terminal electrically connected to the device, where the secondary battery is to be installed, and a safety element to effectively control an abnormal state, such as an overload or an excessive current, of the secondary battery. Examples relating to the safety element may include a positive temperature coefficient (PTC) element, a protection circuit module (PCM), a fuse, and a thermal interruption (TCO) element.
    [004] In general, a safety element, such as a PCM, comes to be connected to a battery cell, including an anode terminal and a cathode terminal, via conductive nickel plates by means of soldering or soldering. For example, nickel plates are connected to the battery cell electrode terminals by soldering or soldering, and a protective circuit board (PCB) is attached to one side of a double-sided tape, a protective tape. comes to be attached to the other side of the double-sided tape, with the tabs of the PCB electrode and the nickel plates coming to be connected to each other by soldering in a condition where the PCB is in close contact with the battery cell. In this way, the PCM is connected to the battery cell to manufacture a battery pack.
    [005] There is a requirement for the PCM to be kept in electrical connection with the battery cell electrode terminals and, at the same time, be electrically isolated from the other parts of the battery cell. For this purpose, insulating tapes come to be attached to various members, including the PCM. Furthermore, a sealed portion of a battery casing is partially curved, and an insulating tape is attached thereto or a bar code is printed thereon. In other words, the process is quite complicated.
    [006] Once there is a request for a plurality of insulating tapes or parts to arrive at a secure connection between the security element and the battery cell, as described above, the assembly process of the battery pack is complicated, and manufacturing cost is increased. Also, when an external impact is applied to the battery pack, the PCM can be damaged or the dimensional stability can be greatly reduced due to the use of insulating tapes, which exhibit low mechanical intensity. Descriptive part Technical problem
    [007] It is an objective of the present invention to provide a secondary battery assembly that is capable of coating a protection circuit board of a secondary battery cell employing an electrically insulating enclosure, insulating the protection circuit board , and preventing the secondary battery cell electrode terminals from being exposed to the outside.
    [008] It is another objective of the present invention to provide a secondary battery set that is able to reduce the amount of parts needed constituting the battery set, thereby simplifying an assembly process and exhibiting excellent structural stability.
    [009] Another objective of the present invention is to provide a secondary battery set configured to present a structure where a protection circuit module, which includes a protection circuit board and a housing, where the placement of the protection circuit board, come to be mounted along the outer circumference of a battery cell, providing maximum capacity within the same standard.
    [010] It is an additional objective of the present invention to provide a protection circuit module that presents itself as a circuit protection module capable of protecting a security element against external impacts, exhibiting dimensional stability, and preventing the formation of pleats along an outer face of a battery pack. Technical Solution
    [011] A secondary battery assembly according to an embodiment of the present invention includes a battery cell having an anode terminal and a cathode terminal formed on one face having an excess sealed portion and a protection circuit module (PCM) electrically connected to the battery cell via the anode terminal and the cathode terminal.
    [012] In this mode, the PCM may include a board having a protection circuit formed therein, with the board being provided, respectively, with an anode terminal connecting part and a cathode terminal connecting part connected to the terminal. anode and cathode terminal, and a PCM housing configured to admit the board through an open face thereof so that the PCM housing fully encloses the board.
    [013] In this mode, the board may be coupled to the anode terminal and the cathode terminal of the battery cell via the anode terminal connecting part and the cathode terminal connecting part, with the plate being positioned in the PCM case in a state where the board is positioned parallel to the battery cell, with the PCM case where the board is to be positioned, being able to be mounted close to the sealed excess portion of the battery cell.
    [014] In this modality, the PCM can also include an electrically insulated cover to seal the open face of the PCM casing.
    [015] In this modality, the PCM casing and the cover can be coupled together through a fixing structure per type of assembly. The PCM housing can be provided with at least one locking groove for coupling with the cover, and the cover can be provided with at least one locking protrusion corresponding to at least one locking groove of the PCM housing.
    [016] In this embodiment, the battery cell can consist of a battery cell, and the anode terminal and the cathode terminal can comprise of conductive members in the form of plates.
    [017] In this mode, the board can also include an external input and an external terminal. The external input and the output terminal can be formed together with the board where the anode terminal connecting part and the cathode terminal connecting part are formed via an interconnecting part.
    [018] In addition, the external input and the output terminal can be formed on the board where the anode terminal connecting part and the cathode terminal connecting part are formed.
    [019] In this mode, the external input and the output terminal can be formed along the other face of the board where the anode terminal connection part and the cathode terminal connection part are formed.
    [020] In this mode, the PCM casing may further include an opening, through which the external input and output terminal are pulled, being formed along a face adjacent to its open face. An example of the opening might be a slit-type opening.
    [021] In this mode, the secondary battery pack may further include an insulating tape additionally attached to an exposed region of the electrode terminal of the sealed surplus portion. The insulating tape can consist, for example, of double-sided tape.
    [022] In this mode, the secondary battery pack may further include an insulating tape additionally attached to at least the outer faces of the PCM casing.
    [023] In this modality, the battery cell can be configured to present a structure where an assembly of electrodes, including cathodes, anodes, and separators respectively arranged between the cathodes and anodes, comes to be arranged in a formed battery casing from a laminated sheet including a metallic layer and a resin layer in a sealed state.
    [024] In this mode, the plate can be arranged in the PCM casing in a state where the plate is parallel to the battery cell in an extension direction identical to an extension direction of the sealed excess portion.
    [025] In this modality, the secondary battery pack can further include a nickel plate additionally installed along one face of the cathode terminal, where the cathode terminal connecting part of the plate is to be coupled by means of ultrasonic welding.
    [026] In this modality, the secondary battery pack may further include a label for battery cell coating. The tag may be configured to feature a structure for sealing the sealed outer circumferences of the battery cell.
    [027] A protection circuit module according to another embodiment of the present invention includes a protection circuit board containing an anode terminal connecting part and a cathode terminal connecting part connected to an anode terminal and a cathode terminal of a battery cell, respectively, and a PCM housing configured to admit a protective circuit board across an open face thereof.
    [028] In the protection circuit module according to this modality, the protection circuit board can be coupled to the anode terminal and the cathode terminal of the battery cell via the anode terminal connecting part and the connecting part cathode terminal, with the board being able to be disposed in the PCM housing in a state where the board is parallel, and it can be mounted next to the sealed surplus portion of the battery cell.
    [029] In the protection circuit module according to this modality, an electrically insulated cover may be mounted next to the PCM enclosure to close the open face of the PCM enclosure.
    [030] In the protection circuit module according to this modality, the PCM housing and the cover can be coupled together through a fixing structure per type of assembly. The PCM housing can be provided containing at least one locking groove for coupling with the cover, and the cover can be provided containing at least one locking protrusion corresponding to at least one locking groove of the PCM housing. Alternatively, a person skilled in the art in the field pertinent to the present invention will note that the PCM casing can be provided containing at least one attachment protrusion (eg hook), and the cover may be provided containing at least one attachment groove corresponding to at least one securing protrusion of the PCM casing, or securing protrusions and securing grooves may alternatively be formed close to the PCM casing and the cover. That is, the fixing structure for coupling the PCM casing and the cover is not particularly restricted, as long as the PCM casing and the cover are coupled together.
    [031] In the protection circuit module according to this modality, the PCM housing can be configured so as to present a hollow box structure open to one face thereof.
    [032] In the protection circuit module according to this modality, the protection circuit board may further include an external input and output terminal coupled to the board where the anode terminal connecting part and the connecting part are formed of cathode terminal via an interconnect part. The PCM housing may further include an opening, through which the interconnecting portion extends, formed adjacent a face adjacent an open face thereof. In addition, the PCM housing may further include a slit-like opening.
    [033] The method of manufacturing a secondary battery set according to another embodiment of the present invention includes a battery cell formation step configured to present a structure where a set of electrodes, including cathodes, anodes, and separators respectively there disposed between the cathodes and anodes, comes to be positioned in a battery casing in a sealed state, with one of the sealed outer circumferences of the battery cell having a surplus portion, including a step for admitting a plate into an open casing along a face of the same in an extension direction identical to an extension direction of the overflow sealed portion in a state where the plate is parallel to the battery cell, a step of assembling the housing next to the overflow sealed portion of the battery cell , and a step of assembling an electrically insulated cover to the PCM housing for closing the open face of the PCM housing.
    [034] A secondary battery pack according to a further embodiment of the present invention includes a battery cell containing an anode terminal and a cathode terminal formed on one face containing a sealed excess portion and a protection circuit module (PCM ) electrically connected to the battery cell via the anode terminal and the cathode terminal.
    [035] In this embodiment, the PCM may include a board having a protection circuit formed therein, with the board being provided containing an anode terminal connecting part and a cathode terminal connecting part, respectively, and a housing of PCM configured to admit the board through an open face of the board so that the PCM enclosure encloses the board.
    [036] In this mode, the plate can be coupled to the anode terminal and the cathode terminal of the battery cell via the anode terminal connecting part and the cathode terminal connecting part, with the plate being positioned on the PCM casing in a state where the board is perpendicular to the battery cell, and the PCM casing, where the positioning of the board occurs, may be mounted next to the sealed excess portion of the battery cell, with the PCM being able to include also an electrically insulated cover for closing the open face of the PCM housing. Advantageous Effects
    [037] The secondary battery set according to the present invention is configured to present a structure where the PCB is placed in the PCM casing, coming to be mounted next to the excess sealed portion of the battery cell. Consequently, it becomes possible to effectively protect the PCM and greatly reduce the number of parts making up the secondary battery pack, greatly improving the manufacturing efficiency compared to the secondary battery pack of the conventional type.
    [038] Furthermore, the secondary battery pack according to the present invention is configured to present a structure where the PCB comes to be mounted in the PCM casing in an insert form. As a result, it is possible to greatly reduce the number of parts constituting the secondary battery pack, greatly improving manufacturing efficiency, making the secondary battery pack easier to manufacture, relatively reducing the rate of defects, and configuring the battery pack. secondary battery so that the secondary battery set does not have any creases formed along its outer face, i.e. a transparent and clean external appearance, compared to the secondary battery set of the conventional internal type where the isolation of the PCM by the use of a tape.
    [039] In addition, the secondary battery assembly according to the present invention is configured to present a structure where the PCB comes to be mounted next to the sealed excess portion of the battery cell in a direction facing the upper end of the main body of the battery cell in a state where the PCB is lifted perpendicular to the battery cell. Consequently, it is possible to reduce the length of the excess sealed portion and increase the capacity of the secondary battery pack per unit volume, compared to the structure where the PCB comes to be mounted with the excess sealed portion in parallel. Brief Description of Drawings The above objects and other objects, aspects and other advantages of the present invention will become more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, where: FIG. 1 is an enlarged perspective view of a secondary battery pack in accordance with an embodiment of the present invention; FIGS. 2-9 are perspective views showing a method of manufacturing the secondary battery pack of FIG. 1; FIG. 10 is an enlarged perspective view showing an "A" region of FIG. 8; and FIG. 11 is a perspective view of a secondary battery pack of the present invention. Detailed Description of the Invention
    [040] The description of the exemplary embodiments of the present invention follows in detail with reference to the accompanying drawings. It should be noted, however, that the embodiments will only be described with a view to a better understanding of the present invention, and therefore the scope of the present invention should not be limited to the illustrated embodiments.
    [041] A secondary battery pack according to the embodiment of the present invention includes a battery cell having four sealed outer circles and a safety element mounted next to a sealed outer circle containing a surplus portion, consisting of one of the outer circles. A security element in accordance with an embodiment of the present invention may include a first security element and a second security element. The first safety element may comprise of a protection circuit, and the second safety element may comprise of a positive temperature coefficient (PTC) element, a fuse, or a thermal interruption (TCO) element. Furthermore, the second safety element can be mounted in a protection circuit module (PCM) in the form of a part.
    [042] The security element according to the embodiment of the present invention may consist of a PCM. The PCM can include a protective circuit board and an enclosure, where the protective circuit board comes to be disposed. In addition, the PCM may also include an electrically insulated cover to close an open face of the housing. For convenience of description, a PCM is given its description as coming to understand the security element, and the PCM is to be described as including a protection circuit board (PCB) in this specification, which, however, there is no limitation to the security element according to the embodiment of the present invention.
    [043] Next, there is a description of a secondary battery pack according to an embodiment of the present invention with reference to FIG. 1. Typically, FIG. 1 shows an enlarged perspective view of a secondary battery assembly along with an embodiment of the present invention.
    [044] With reference to FIG. 1, a secondary battery pack 700 may include an anode terminal 120, a cathode terminal 110, a battery cell 100, a PCM 500, and a tag 400.
    [045] The battery cell 100, according to an embodiment of the present invention, consists of a pouch-shaped battery cell configured so that an electrode assembly of a cathode/separator/anode structure is arranged in a housing cell made of a laminated sheet including a metallic layer and a resin layer in a sealed state, which, however, the battery cell according to the embodiment of the present invention is not limited.
    [046] With reference to FIG. 1, the battery cell 100 includes a sealed excess portion 130 formed near a face thereof and an anode terminal 120 and a cathode terminal 110 exposed to the sealed excess portion 130. The word "face" used in this report indicates a face arbitrary of a tetrahedron with four faces, being understood to include a side, a section, or an end. In addition, in this descriptive report, a sealed portion, incorporating an excess space formed near one of the sealed outer circumferences when an electrode assembly, comes to be disposed in a battery housing made of a laminated sheet in a sealed state is referred to as an excess sealed portion being 130. However, a person skilled in the art pertinent to the scope of the present invention will appreciate that the excess sealed portion can be replaced by others, such as a thermally welded excess portion and a sealed roof, provided these are specific present the same function as that of the sealed surplus portion.
    [047] An electrically insulated cover 600, according to an embodiment of the present invention, is configured to present a structure for closing the open face of a PCM 300 casing. As shown in FIG. 1, the electrically insulated cover 600 is provided with hooks 610 corresponding to the attachment slots 320 of the PCM 300 housing, with the PCM 300 housing being provided with attachment slots 320 corresponding to the hooks 610 of the electrically insulated cover 600. the PCM 300 housing and the electrically insulated cover 600 can be coupled together via the mounting frame mounting.
    [048] An anode terminal 120 and a cathode terminal 110 coming in accordance with an embodiment of the present invention comprise of plate-shaped conductive members. Anode terminal 120 and cathode terminal 110 are electrically connected to PCB 200 of a PCM 500, which will be described later.
    [049] A PCB 500 according to an embodiment of the present invention may include a PCB 200 having a protection circuit, an electrically insulated PCM housing 300, where the PCB 200 is disposed, and an external input and output terminal 210 .
    [050] With reference to FIG. 1, PCB 200 consists of a board including a protection circuit. The PCB can be referred to as a protective circuit board or simply a board. The PCB 200 may further include an anode terminal connecting portion 220 connected to the anode terminal 120 of the battery cell 100 and a cathode terminal connecting portion 230 connected to the cathode terminal 110 of the battery cell 100 on the board, in addition to the protection circuit for controlling overcharge, over-discharge, and over-current from the battery. In addition to the protection circuit and the two connecting parts 220 and 230, the PCB 200 may further include an external input and output terminal 210 connected to the board via an interconnecting part 211 connected at one end to the board, as shown in FIG. . 1.
    [051] An external input and output terminal 210 coming in accordance with an embodiment of the present invention are not particularly restricted since the external input and output terminal may be electrically connected to the PCB 200 to supply current from a external device, such as a charger, near the battery cell 100 or to supply current from the battery cell 100 to an external device, such as a mobile phone, an MP3 player, etc. For example, the external input and output terminal 210 can be configured to incorporate a board structure having a connector 212 mounted on one end thereof.
    [052] It is also different from the modality shown in FIG. 1, the external input and the output terminal can be formed together with the board where the anode terminal connecting part and the cathode terminal connecting part are formed without being connected to PCB 200 via the interconnecting part. A secondary battery pack having the construction set out above is shown in FIG. 11. In a case where an external input and an output terminal are formed on a PCB, the openings are formed in a region of a PCM 420 housing (see FIG. 11), where the PCB is arranged, corresponding to an input and to the 430 output terminal (see FIG. 11). The external input and output terminal can be electrically connected to an external device through the openings.
    [053] An anode terminal connecting part 220 according to an embodiment of the present invention may include a part coupled together with the PCB 200 and an extension part that can be bent when the anode terminal connecting part 220 comes to be connected to the anode terminal 120 of the battery cell 100. Likewise, a cathode terminal connecting portion 230 according to an embodiment of the present invention may include a portion coupled to the PCB 230 and an extension portion that may be curved when the cathode terminal connecting portion 230 comes to be connected to the cathode terminal 110 of the battery cell 100.
    [054] As shown in FIG. 1, the external input and output terminal 210 coming in accordance with the embodiment of the present invention are configured to have a board structure containing a connector 212 mounted at one end thereof, where, however, the external input and output terminal 210 do not find restrictions. Also, as shown in FIG. 1, the external input and output terminal 210 are configured to face a direction opposite to a direction where the anode terminal connecting portion 220 and the cathode terminal connecting portion 230 face together, this being just an example. According to another embodiment of the present invention, the external input and output terminal 210 can be configured to face the same direction as the direction where the anode terminal connecting part 220 and the cathode terminal connecting part face each other. In addition, the external input and output terminal can be located along the side of the cathode terminal connecting part.
    [055] A PCM 300 enclosure, according to an embodiment of the present invention, is configured to present an open hollow box structure along one of its faces, so that the PCB 200 can be mounted in the enclosure PCM 300 through the open face. Consequently, the dimensional stability of the PCM 300 casing becomes high, and the assembly time and process can be greatly reduced. In this case, the process of positioning the PCB 200 in the PCM 300 housing and the assembly of the PCB 200 with the PCM 300 housing. possible to greatly simplify the process.
    [056] The PCM casing 300 may be of a size sufficient to receive and enclose the PCB 200 mounted on the sealed excess portion 130 of the battery cell 100. Also, in a case where the PCB 200 includes the external input and output terminal 210 connected thereto via the interconnecting part 211 as shown in FIG. 1, an opening through which the external input and output terminal 210 are to be exposed may be formed adjacent a face of the PCM housing 300 adjacent the open face. For example, a slit-like opening 310 may be formed adjacent to the PCM casing.
    [057] A secondary battery pack, according to another embodiment of the present invention, can be configured so that a safety element is further mounted between at least one of the electrode terminals, i.e., the anode terminal and/or the cathode terminal, the battery cell and the PCB. In this case, the safety element can be arranged between, for example, the anode terminal of the battery and the PCB. The safety element is mounted in the PCM housing together with the PCB so that the structural stability of the safety element is ensured.
    [058] Consequently, it is possible to directly connect the cathode terminal of the battery cell with the cathode terminal connecting part of the PCB and connect one side of the safety element together with the connecting part of the safety element arranged thereon. PCB face in a state where the anode terminal comes to be connected to the other side of the safety element without the shape deformation or use of the additional members, and therefore it is possible to stably install the safety element, being it lowers the structural intensity, along with the PCB, thus reducing a defect rate along with a manufacturing process with improved manufacturing efficiency.
    [059] The safety element consists of a member that interrupts the current when the temperature of the battery cell increases, ensuring safety. For example, the safety element can consist of a PCT element whose resistance increases as the temperature of the battery cell increases, or the fuse fails to function when the temperature of the battery cell increases. However, the safety element is not restricted to the PTC element and the fuse.
    [060] A description of a method of manufacturing the secondary battery set shown in FIG. 1 with reference to FIGS. 2 to 10. FIGS. 2-10 comprise of several perspective views of a secondary battery pack illustrating a method of manufacturing a secondary battery pack.
    [061] Firstly with reference to FIG. 2, an excess portion, i.e. a sealed excess portion 130, is formed near one of the sealed faces of a battery cell 100, and an anode terminal 120 and a cathode terminal 110 of the battery cell 100 are arranged in the sealed over portion 130. The over sealed portion 130 is of sufficient size for the admission of a PCM 500, where a PCB 200 is coupled to a PCM 300 housing, with the size of the PCM 300 housing being able to be larger or less than that relating to the sealed excess portion 130. An individual having technical knowledge in the field will appreciate that the size of the PCM casing 300 can be suitably adjusted based on the capacity and shape of the battery cell.
    [062] Subsequently, as shown in FIG. 2, a nickel plate 140 can be coupled to a portion of the cathode terminal 110, for example, by ultrasonic welding. In a case where the nickel plate 140 comes to be installed next to the cathode terminal 110, it is possible to prevent deterioration of the soldering capacity between the cathode terminal, made of aluminum, of the battery cell and a connecting part of cathode terminal made of nickel due to different properties.
    [063] Furthermore, in the other embodiment of the present invention, according to the description already provided, an additional security element, such as a PTC element, may be mounted between the anode terminal 120 and a connecting part of 220 anode terminal to ensure stability.
    [064] Subsequently, according to FIG. 3, the anode terminal connecting portion 220 and a cathode terminal connecting portion 230 formed near the PCB 200 are soldered to the anode terminal 120 and the cathode terminal 110 of the battery cell 100, respectively, e.g. through spot welding. In a case where the nickel plate 140 is to be soldered to the cathode terminal 110, as shown in FIG. 2, the cathode terminal connection portion 230 is to be soldered to the nickel plate 140.
    [065] Since the anode terminal connecting part 220 and the cathode terminal connecting part 230 each include a part coupled to the PCB 200 and an extendable part that can be bent, according to the description already given, the anode terminal connecting part 220 and the cathode terminal connecting part 230 of the PCB 200 can be coupled to the anode terminal 120 and the cathode terminal 110 of the battery cell 100, respectively, by means of mode soldering. that the PCB 200 is presented opposite a face of the battery cell 100, where the sealed excess portion 130 is formed, as can be seen from FIG. 3.
    [066] With reference to FIG. 4 in conjunction with FIG. 1 , after the anode terminal connecting part 220 and the cathode terminal connecting part 230 are bent, an adhesive tape 160, serving as an insulating tape, may come to be fixed together with a terminal display region of electrode of the sealed excess portion 120 of the main body of the battery cell 100. In a case where the insulating tape is still affixed to the electrode terminal exposure region of the sealed excess portion 130, according to the above description, it is It is possible to more effectively improve the isolation of the electrode terminal exposure region. Furthermore, in a case where the electrical tape presents itself as a double-sided tape, the double-sided tape provides a coupling force between the PCM housing and the sealed excess portion when assembling the PCM housing with the PCB , thereby further improving structural stability.
    [067] In the embodiment of the present invention, the PCB 200, connected to the battery cell 100 via the anode terminal connecting part and the cathode terminal connecting part, can be disposed in the PCM housing in a state where the PCB 200 is parallel to battery cell 100, and may be mounted close to the sealed overflow portion of battery cell 100. At present, the state in which PCB 200 is parallel to battery cell 100 may be, for example, , from a state where the anode terminal connecting part 220 and the cathode terminal connecting part 230, connected to the anode terminal and the cathode terminal of the battery cell, are arranged to face each other in upward direction as shown in FIG. 4. In this case, as shown in FIG. 4, the PCB 200 can be spaced away from the end of the battery cell where the formation of the excess sealed portion occurs through the length extension between the anode terminal and the anode terminal connecting part and between the cathode terminal and the cathode terminal connecting part in the longitudinal direction so that the PCB 200 is parallel to the sealed excess portion.
    [068] In other words, in a situation where the PCB 200 comes to be arranged in parallel with the battery cell, as shown in FIG. 4, the face of the PCB 200 where the anode terminal connection part 220 and the cathode terminal connection part 230 are located, faces upwards with the resultant that the two wider of the four faces constituting the external appearance of the PCB 200 confront each other upwards and downwards. Furthermore, since the two of the four wider faces constituting the external appearance of the PCB 200 face upwards and downwards, two of the wider faces of the PCB 200 and two of the wider faces of the battery cell 100 are presented. arranged to confront each other in the same directions. Consequently, it can be understood that the PCB 200 is arranged in parallel with the battery cell 100 and includes the positioning relationship mentioned above.
    [069] With reference to FIG. 5 , the board can be disposed in the PCM housing in a state where the board is parallel to the battery cell in an extension direction identical to an extension direction of the sealed excess portion. As previously described in connection with FIG. 1, PCM housing 300 is open on one of its faces so that PCM housing 300 admits PCB 200 through the open face. Furthermore, in a situation where the external input and output terminal 210 are connected to the connecting parts of the PCB 200 via the interconnecting part, shown as in FIG. 1, an opening, for example, a slit-like opening 310 may be formed near a face of the PCM housing 300 corresponding to the interconnecting portion 211 of the PCB 200 so that the external input and output terminal 210 are exposed. to the outside. Since the interconnecting part 211 of the PCB 200 extends through the slit-like opening 310, the external input and output terminal 210 connected to the interconnecting part 211 are exposed to the outside.
    [070] The PCM housing can be mounted next to the battery cell in a state with the opening faces facing upwards, as shown in FIG. 1, or in a vector direction as shown in FIG. 5. In addition, the PCM housing can be mounted next to the battery cell in a state where the plate is perpendicular to the battery cell as well as in a state where the plate is parallel to the battery cell, as described. previous.
    [071] With reference to FIG. 6 in conjunction with FIGS. 1 and 8, the anode terminal 120 and the cathode terminal 110 are curved towards a face of the battery cell where the sealed excess portion is formed so that the PCM housing 300 is mounted close to the sealed excess portion. 130 of the battery cell 100.
    [072] When the PCB 200 comes to be mounted next to the sealed excess portion 130 formed near a face of the battery cell 100, according to the previous description, the PCB 200 is mounted perpendicularly to the sealed excess portion 130. In one case where it is difficult for the excess sealed portion 130 to be of sufficient size, the PCB 200 may be reduced in size.
    [073] With reference to FIGS. 7 and 8 together with FIG. 10, the PCM casing 300, where the board is to be arranged, is open along one of its faces. As previously described in connection with FIG. 1, the open face of the PCM housing 300 can be closed off by the electrically insulated cover 600. Furthermore, as shown in FIG. 7, the electrically insulated cover 600 is provided with the hooks 610 corresponding to the fixing grooves 320 of the PCM housing 320 corresponding to the hooks 610 of the electrically insulated cover 600. Therefore, the PCM housing 300 and the electrically insulated cover 600 can be coupled together each other by means of a fixing structure per type of assembly.
    [074] In addition, the positioning and shape of the fixing grooves and the fixing protrusions (eg hooks) are not restricted in particular, as long as the PCM housing and the cover will be coupled together through the grooves of attachment and attachment protrusions.
    [075] FIG. 9 consists of a display showing a state where a label 400 coats the PCM housing 300 and the battery cell 100 in a state where the PCB 200 mounted on the sealed excess portion 130 of the battery cell 100 comes to be disposed on the PCM housing 300 The label 400 in accordance with the present invention may be configured to coat the outer faces of the PCM casing 300 and the sealed outer circumferences of the battery cell 100 (see arrow directions in FIG. 9), so that the inlet external and the output terminal can be exposed to the external part. For example, as shown in FIG. 9, label 500 may be later affixed to coat the outer faces of the POCM 500 and the sealed outer circumferences of the battery cell 100, excluding the external input and output terminal 210 exposed on the outside.
    [076] In a case where the label 400 will be attached to the battery cell, it is possible to stabilized the sealed outer circumferences of the battery cell to the main body of the battery cell, while preserving the general state of isolation , more firmly stabilizing the electrical connection state between the battery cell electrode terminals and the PCB.
    [077] FIG. 11 is a perspective view of a secondary battery pack in accordance with another embodiment of the present invention configured so that an external input and output terminal are mounted close to a PCB. Referring to FIG. 11, in accordance with the foregoing description, a secondary battery pack 800 is configured to assume a structure where an external input and output terminal 430 are formed close to one face of the PCB (not shown), so that the input and the output terminal 430 are exposed to the outside through a PCM 420 enclosure.
    [078] As evidenced from the previous description, the secondary battery assembly according to the present invention is configured so that the PCM 500, where the protective circuit board is electrically connected to the cathode terminal and the anode terminal of the battery cell is positioned in the housing, is mounted with the excess sealed portion formed on one face of the battery cell. Consequently, it is possible to effectively protect the PCM and greatly reduce the number of parts making up the secondary battery pack, thus greatly increasing the manufacturing efficiency compared to the conventional secondary battery pack.
    [079] In addition, the secondary battery set according to the present invention comes to be configured so that the protection circuit board is disposed in the electrically insulated casing. Consequently, it is possible to protect and isolate the PCM by including the protection circuit board. In addition, it is possible to easily prevent the electrode terminals from being exposed to the outside without insulating the electrode terminals through the use of additional members.
    [080] Furthermore, the secondary battery pack according to the present invention is configured so that the protective circuit board is mounted in the housing. Consequently, it is possible to easily manufacture the secondary battery pack, relatively reducing a defect rate, and configure the secondary battery pack so that the secondary battery pack does not have any creases formed on its external face, i.e., have a clean and transparent external appearance compared to the conventional secondary battery pack where the PCM comes to be isolated through the use of a tape.
    [081] Even more, the secondary battery assembly, according to the present invention, comes to be configured so that the protective circuit board is mounted next to the sealed surplus portion formed on one face of the battery cell. Consequently, it is possible to reduce the length of the excess sealed portion and increase the battery pack capacity per unit volume compared to the conventional secondary battery pack.
    [082] In sequence, in a generic process of assembling the secondary battery pack, the connecting members and the PCM come together, and an electrical tape is attached at each step, with the PCM assembly being mounted on the battery cell , according to the previous description. That is, the PCM assembly is installed next to the battery cell making use of a plurality of parts, resulting in the need for a plurality of processes, and with the structural stability as well as the mechanical intensity being low.
    [083] On the other hand, the protection circuit module, according to the present invention, comes to be configured to present a structure where the protection circuit board is mounted in the housing, and, therefore, being possible to improve the structural stability of the battery pack, to greatly simplify the battery pack manufacturing process, to ensure excellent insulation, and to maximize the capacity of the battery cell in the battery pack featuring the same standard as the conventional battery pack.
    [084] In addition, in the manufacturing method according to the present invention, it is possible to come to protect and insulate the PCM making use of the casing without the presence of an additional member, such as a label or an insulating tape. In addition, the protective circuit board is electrically connected to the electrode terminals, with the electrode terminals being curved, and then the protective circuit board being mounted in the housing, with the result that no exposed regions are formed. during the bending process, and therefore there is no need for an additional insulating member.
    [085] Although the exemplary modalities of the present invention have been described for illustrative purposes, experts in the field will note that various modifications, additions and substitutions are possible, without deviating from the scope and spirit of the invention, described in accordance with with the accompanying drawings.
    权利要求:
    Claims (18)
    [0001]
    1. Secondary battery assembly (700), CHARACTERIZED in that it comprises: a battery cell (100) having an anode terminal (120) and a cathode terminal (110) formed on one face having a sealed excess portion (130 ); and a protection circuit module (PCM) (500) electrically connected to the battery cell (100) via the anode terminal (120) and the cathode terminal (110), wherein: the PCM (500) comprises: a protection circuit board (PCB) (200) being provided with an anode terminal connecting part (220) and a cathode terminal connecting part (230) connected respectively to the anode terminal (120) and to the cathode terminal (110); and a PCM housing (300) configured to receive the PCB (200) through an open face thereof such that the PCM housing (300) surrounds the PCB (200), the PCB (200) is coupled to the terminal. of anode (120) and to the cathode terminal (110) of the battery cell (100) through the anode terminal connecting part (220) and the cathode terminal connecting part (230), the PCB (200) is arranged in the PCM housing (300) in a state in which the PCB (200) is parallel to the battery cell (100), and the PCM housing (300), in which the PCB (200) is disposed, is mounted next to the oversealed portion (130) of the battery cell (100), and the PCM (500) further comprises an electrically insulated cover (600) for closing the open face of the PCM housing (300), in which the battery pack The secondary (700) further comprises an insulating tape further affixed to an electrode terminal exposure region of the sealed excess portion (130), wherein the anode terminal connecting portion (220) and the cathode terminal connecting portion (230), respectively, include a PCB-coupled portion (200) and an extension portion that can be bent when the anode terminal connecting portion (220) and the cathode terminal connecting part (230) are connected to anode terminal (120) and cathode terminal (110) of battery cell (100), respectively.
    [0002]
    2. Secondary battery set (700), according to claim 1, CHARACTERIZED by the fact that the PCM housing (300) and the cover are coupled together through a fastening structure by type of assembly.
    [0003]
    3. Secondary battery pack (700) according to claim 2, CHARACTERIZED by the fact that the PCM housing (300) is provided with at least one fastening groove for engaging with the cover, and the cover is provided with at least one attachment protrusion corresponding to the at least one attachment groove of the PCM housing (300).
    [0004]
    4. Secondary battery pack (700) according to claim 1, CHARACTERIZED by the fact that the battery cell (100) is a plate-shaped battery cell, and the anode terminal (120) and the terminal of cathode (110) are conductive members in plate shape.
    [0005]
    5. Secondary battery set (700), according to claim 1, CHARACTERIZED by the fact that the board further comprises an external input and output terminal (210).
    [0006]
    6. Secondary battery pack (700) according to claim 5, CHARACTERIZED by the fact that the external input and output terminal (210) is formed on the PCB (200) in which the anode terminal connection part ( 220) and the cathode terminal connecting part (230) are formed through an interconnecting part (211).
    [0007]
    7. Secondary battery pack (700), according to claim 5, CHARACTERIZED by the fact that the external input and output terminal (210) is formed on the PCB (200) in which the anode terminal connection part ( 220) and the cathode terminal connecting part (230) are formed.
    [0008]
    8. Secondary battery pack (700), according to claim 5, CHARACTERIZED by the fact that the external input and output terminal (210) is formed along the other face of the PCB (200) in which the connecting part of anode terminal (220) and cathode terminal connecting part (230) are formed.
    [0009]
    9. Secondary battery pack (700) according to claim 6, CHARACTERIZED by the fact that the PCM housing (300) further comprises an opening, through which the external input and output terminal (210) is pulled, formed on a face adjacent to an open face of itself.
    [0010]
    10. Secondary battery pack (700), according to claim 9, CHARACTERIZED by the fact that the opening is a slit-type opening (310).
    [0011]
    11. Secondary battery pack (700), according to claim 1, CHARACTERIZED by the fact that the insulating tape is a double-sided tape.
    [0012]
    12. Secondary battery pack (700), according to claim 1, CHARACTERIZED by the fact that it further comprises an insulating tape further affixed to at least one of the outer faces of the PCM housing (300).
    [0013]
    13. Secondary battery assembly (700), according to claim 1, CHARACTERIZED by the fact that the battery cell (100) is configured to have a structure in which an electrode assembly, comprising cathodes, anodes, and separators respectively arranged between the cathodes and the anodes, is arranged in a battery housing made of a laminated sheet comprising a metallic layer and a resin layer in a sealed state.
    [0014]
    14. Secondary battery pack (700) according to claim 1, CHARACTERIZED by the fact that the PCB (200) is disposed in the PCM housing (300) in a state in which the PCB (200) is parallel to the cell of battery (100) in an extension direction identical to an extension direction of the sealed excess portion (130).
    [0015]
    15. Secondary battery set (700), according to claim 1, CHARACTERIZED by the fact that it further comprises a label (400) to coat the battery cell (100).
    [0016]
    16. Secondary battery pack (700), according to claim 15, CHARACTERIZED by the fact that the label (400) is configured to have a structure to coat sealed outer circumferences of the battery cell (100).
    [0017]
    17. Protection circuit module (PCM) (500), CHARACTERIZED in that it comprises: a protection circuit board (PCB) (200) having an anode terminal connecting part (220) and a connecting part cathode terminal (230) connected to an anode terminal (120) and a cathode terminal (110) of a battery cell (100), respectively; and a PCM housing (300) configured to receive the protective circuit board (200) through an open face thereof, wherein the protective circuit board (200) is coupled to the anode terminal (120) and to the cathode terminal (110) of the battery cell (100) through the anode terminal connecting part (220) and the cathode terminal connecting part (230), the protective circuit board (200) is arranged on the PCM housing (300) in a state in which the plate is parallel to the battery cell (100), and the PCM housing (300), in which the plate is disposed, is mounted together with the sealed surplus portion (130) of the battery cell (100), and an electrically insulated cover (600) is mounted close to the PCM housing (300) to close the open face of the PCM housing (300), wherein an insulating tape is further affixed to a region of electrode terminal exposure of the sealed excess portion (130), wherein the anode terminal connecting part (220) and the term connecting part cathode end (230), respectively, include a PCB-coupled part (200) and an extension part that can be bent when the anode terminal connecting part (220) and the cathode terminal connecting part (230 ) are connected to the anode terminal (120) and the cathode terminal (110) of the battery cell (100), respectively.
    [0018]
    18. Secondary battery assembly (700), CHARACTERIZED in that it comprises: a battery cell (100) having an anode terminal (120) and a cathode terminal (110) formed on one face having a sealed excess portion ( 130); and a protection circuit module (PCM) (500) electrically connected to the battery cell (100) via the anode terminal (120) and the cathode terminal (110), wherein the PCM (500) comprises: a PCB (200) being provided with an anode terminal connecting part (220) and a cathode terminal connecting part (230) connected to the anode terminal (120) and the cathode terminal (110), respectively; and a PCM housing (300) configured to receive the PCB (200) through an open face thereof such that the PCM housing (300) surrounds the PCB (200), the PCB (200) is coupled to the terminal of anode (120) and to the cathode terminal (110) of the battery cell (100) through the anode terminal connecting part (220) and the cathode terminal connecting part (230), the PCB (200) is disposed in the PCM housing (300) in a state in which the PCB (200) is perpendicular to the battery cell (100), and the PCM housing (300), in which the PCB (200) is disposed, is mounted next to the oversealed portion (130) of the battery cell (100), and the PCM (500) further comprises an electrically insulated cover (600) for closing the open face of the PCM housing (300), wherein the battery pack The secondary (700) further comprises an insulating tape 10 secured in addition to an electrode terminal exposure region of the sealed excess portion (130), wherein the anode terminal connecting portion (220) ) and the cathode terminal connecting part (230), respectively, include a PCB-coupled part (200) and an extension part that can be bent when the anode terminal connecting part (220) and the part cathode terminal connection connectors (230) are connected to the anode terminal (120) and the cathode terminal (110) of the battery cell (100), respectively.
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    CN103718342B|2016-11-23|
    KR101293591B1|2013-08-13|
    WO2013022211A3|2013-04-04|
    JP5947381B2|2016-07-06|
    KR101259944B1|2013-05-02|
    EP2744017A2|2014-06-18|
    TW201336142A|2013-09-01|
    KR20130018576A|2013-02-25|
    KR20130030285A|2013-03-26|
    WO2013022211A2|2013-02-14|
    TWI482328B|2015-04-21|
    BR112014003053A2|2017-02-21|
    US9793704B2|2017-10-17|
    US20140147707A1|2014-05-29|
    EP2744017B1|2017-06-21|
    JP2014522089A|2014-08-28|
    CN103718342A|2014-04-09|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-06-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-08| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 01/08/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    KR20110078989|2011-08-09|
    KR10-2011-0078989|2011-08-09|
    KR1020120014792A|KR20130018477A|2011-08-09|2012-02-14|Secondary battery pack of novel structure|
    KR10-2012-0014792|2012-02-14|
    PCT/KR2012/006128|WO2013022211A2|2011-08-09|2012-08-01|Secondary battery pack|
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