• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    secondary battery trim the description presented in this report consists of a secondary battery trim containing an anode terminal and a cathode terminal formed on one face having a sealed excess portion and a circuit protection module (pcm) electrically connected to an element of battery via the anode terminal and to the cathode terminal, the pcm including a panel having a protection circuit formed therein, with the panel being provided containing an anode terminal connecting portion and a terminal connecting portion. cathode connected respectively to the anode terminal and the cathode terminal, and a pcm compartment configured for panel admission through an open face thereof, so that the pcm compartment surrounds the panel. the panel is connected to the anode terminal and cathode terminal of the battery element via the anode terminal connecting part and cathode terminal connecting part, with the panel being disposed in the pcm compartment in a condition where the panel comes to be parallel next to the battery element, and the pcm compartment, where the panel comes to be, comes to be installed in the excess sealed portion of the battery element. the pcm also includes an electrically insulated lid to close the open face of the pcm compartment.
    公开号:BR112014003152B1
    申请号:R112014003152-5
    申请日:2012-08-01
    公开日:2021-07-20
    发明作者:Jong Woon Choi；Seog Jin Yoon；Youngjoo CHA
    申请人:Lg Chem, Ltd；
    IPC主号:
    专利说明:

    Field of Invention
    [001] The present invention relates to a secondary battery pack. Background of the Invention
    [002] As mobile devices have been increasingly developed, and the demand for such mobile devices has increased, the demand for secondary batteries has also increased sharply. Among such secondary batteries is a lithium secondary battery that exhibits high energy density and excellent operating voltage, preservation, and service life characteristics, which have been widely used as a power source for various electronics as well as various types of mobile devices.
    [003] Depending on the types of devices in which the secondary batteries are used, the secondary batteries can be configured to have a separable type structure in which the secondary batteries can be easily inserted and removed from external devices or have a built-in type structure in which secondary batteries are built into the devices. For example, the secondary batteries used in conventional mobile devices are configured to have a detachable type structure in which it is possible for a user to insert or remove a battery from each device. On the other hand, secondary batteries used in devices such as some cell phones, tablet PCs and smart pads can be configured to have a built-in type structure.
    [004] Lithium secondary batteries are widely used as such secondary batteries. Each of the secondary batteries includes an anode terminal and a cathode terminal electrically connected to a device in which the secondary battery is mounted, and a safety element to effectively control an abnormal state, such as an overload or overcurrent, of the battery. secondary. Examples of the safety element may include a positive temperature coefficient (PTC) element, a protection circuit module (PCM), a fuse, and a thermal cut-off (TCO) element.
    [005] Generally, a safety element such as a PCM is connected to a battery cell, which includes an anode terminal and a cathode terminal, through conductive nickel plates by soldering or soldering. For example, nickel plates are connected to the battery cell electrode terminals by soldering or soldering, a protective circuit board (PCB) is attached to one side of a double-sided tape, a protective tape is attached to the other side. of the double-sided tape, and the PCB electrode guides and nickel plates are connected together by soldering in a state where the PCB is in firm contact with the battery cell. In this way, the PCM is connected to the battery cell to manufacture a battery pack.
    [006] It is required that the PCM 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 are attached to various elements, including the PCM. In addition, a sealed portion of a battery box is partially folded over, and electrical tape is attached to it or a barcode is printed on it. In other words, the process is very complicated.
    [007] Since a plurality of insulating tapes or parts is required to achieve a secure connection between the safety element and the battery cell, as described above, a battery pack assembly process is complicated, and the cost of manufacturing is increased. Also, when external impact is applied to a 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 strength. Description of the Invention Problem of the Technique
    [008] An objective of the present invention is to provide a secondary battery assembly that is capable of covering a protection circuit board of a secondary battery cell using an electrically insulating box that thereby protects the protection circuit board against external impact, isolating the protective circuit board, and preventing the secondary battery cell electrode terminals from being externally exposed.
    [009] Another objective of the present invention is to provide a secondary battery pack that is capable of reducing the number of parts necessary to constitute the battery pack, thereby simplifying an assembly process and exhibiting excellent structural stability.
    [010] Another objective of the present invention is to provide a secondary battery set configured to have a structure in which a protection circuit module that includes a protection circuit board and a box, in which the protection circuit board is arranged, is mounted on an outer circumference of a battery cell, thus providing maximum capacity in the same pattern.
    [011] A further objective of the present invention is to provide a protection circuit module that is capable of a protection circuit module that is capable of protecting a security element against external impact, exhibiting dimensional stability, and preventing wrinkles are formed on an outer face of a battery pack. Technical Solution
    [012] A secondary battery assembly, according to an embodiment of the present invention, includes a battery cell that has an anode terminal and a cathode terminal formed on one face that has a sealed excess portion and a circuit module of protection (PCM) electrically connected to the battery cell via the anode terminal and the cathode terminal.
    [013] In this modality, the PCM may include a board that has a protection circuit formed thereon, the board being provided with an anode terminal connecting part and a cathode terminal connecting part connected to the anode terminal and to the cathode terminal, respectively.
    [014] In this mode, the plate can be coupled to the anode terminal and the cathode terminal of the battery cell through the anode terminal connecting part and the cathode terminal connecting part and can be mounted in the sealed excess portion of the battery cell.
    [015] In this embodiment, the secondary battery pack may additionally include a frame mounted on the PCM and the battery cell in order to surround the PCM and the battery cell.
    [016] In this mode, the frame can be configured to have a structure to surround the PCM and the thermally welded outer circumferences of the battery cell.
    [017] In this embodiment, the frame can be configured to have an open structure in which at least a portion of a surface of a main body of the battery cell is externally exposed in a state where the frame is mounted to the PCM and the cell of battery.
    [018] In this embodiment, the frame can be configured to have a structure that includes at least one support to support a portion of a surface of a battery cell main body in a state where the frame is mounted to the PCM and the cell of battery.
    [019] In this modality, the frame can be formed in the shape of a box that has a closed bottom.
    [020] In this mode, the frame can have at least one opening formed on one side or a bottom thereof.
    [021] In this embodiment, the frame can be configured to have a structure in which at least one face of the frame projects or extends to support a portion of a surface of a battery cell main body in a state where the frame is mounted on the PCM and the battery cell.
    [022] In this embodiment, the battery cell can be a plate-shaped battery cell, and the anode terminal and cathode terminal can be plate-shaped conductive elements.
    [023] In this mode, the board can additionally include an external input and output terminal. The external input and output terminal can be formed on the board in which the anode terminal connecting part and the cathode terminal connecting part are formed through an interconnecting part.
    [024] Also, the external input and output terminal can be formed on the board on which the anode terminal connecting part and the cathode terminal connecting part are formed. The frame may additionally include an opening, through which the external input and output terminal is extracted, formed on a face adjacent to the open face thereof. An example of the opening might be a slit-type opening.
    [025] In this embodiment, the secondary battery pack may additionally include an insulating tape further affixed to an electrode terminal exposure region of the sealed excess portion. The electrical tape can be, for example, double-sided tape.
    [026] In this modality, the battery cell can be configured to have a structure in which an electrode assembly, which includes cathodes, anodes and separators respectively disposed between the cathodes and the anodes, is arranged in a battery box made of a laminated sheet that includes a metal layer and a resin layer in a sealed state.
    [027] In this mode, the plate can be mounted so that the plate is opposite the face of the battery cell in which the sealed surplus portion is formed. In another embodiment, the plate may be mounted perpendicular to the face of the battery cell on which the sealed excess portion is formed.
    [028] In this embodiment, the secondary battery pack may additionally include a nickel plate further mounted on a face of the cathode terminal, to which the cathode terminal connecting portion of the plate is coupled, by ultrasonic welding.
    [029] In this embodiment, the secondary battery pack may additionally include a label to cover the battery cell. The label can be configured to have a frame to cover the sealed outer circumferences of the battery cell.
    [030] A protection circuit module, according to another embodiment of the present invention, includes a protection circuit board having an anode terminal connecting portion and a cathode terminal connecting portion connected to a terminal of anode and cathode terminal of a battery cell, respectively, and a frame for surrounding the protective circuit board and the outer circumferences of the battery cell.
    [031] 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 through the anode terminal connection part and the part of cathode terminal connection and can be mounted on a sealed overflow portion formed on one face of the battery cell.
    [032] In the protection circuit module, according to this modality, the frame can be configured to have an open structure in which a surface of a main body of the battery cell is externally exposed in a state in which the frame is mounted , in order to surround the protective circuit board and the outer circumferences of the battery cell.
    [033] In the protection circuit module, according to this modality, the protection circuit board may additionally include an external input and output terminal coupled to the board in which the anode terminal connecting part and the connecting part cathode terminal are formed through an interconnecting part. The frame may additionally include an opening, through which the interconnecting portion extends, formed on a face adjacent to the open face thereof. Also, the frame may include a slit-like opening.
    [034] A method of manufacturing a secondary battery assembly, according to a further embodiment of the present invention includes a step of forming a battery cell configured to have a structure in which an electrode assembly, which includes cathodes, anodes and separators respectively disposed between the cathodes and the anodes, is disposed in a battery box in a sealed state, one of the sealed outer circumferences of the battery cell having a surplus portion, a step of exposing an anode terminal and a terminal of cathode in the excess sealed portion of the battery cell and mount a protective circuit board, which has an anode terminal connecting part and a cathode terminal connecting part connected to the anode terminal and the cathode terminal, respectively. , to the sealed excess portion, and a step of assembling a frame so that the frame receives the protective circuit board mounted on the sealed excess portion and surrounds the circumference. external sides of the battery cell. Advantageous Effects of the Invention
    [035] As is apparent from the above description, the secondary battery assembly, according to the present invention, includes a frame to surround the PCM and the outer circumferences of the battery cell, so that the PCM is mounted in a manner fixed in the battery cell. Consequently, it is possible to protect and isolate the PCB and the outer circumferences of the battery cell. Also, it is possible to easily prevent the electrode terminals from being externally exposed without the electrode terminal isolation through the use of additional members.
    [036] Also, the secondary battery assembly, according to the present invention, is configured to have a structure in which the PCM is mounted in the sealed surplus portion of the battery cell. Consequently, it is possible to effectively protect the PCM and greatly improve the manufacturing efficiency when compared to the secondary battery pack of the conventional indoor type.
    [037] In addition, the secondary battery assembly, according to the present invention, is configured to have a structure in which the PCB is mounted on the frame. Consequently, it is possible to easily manufacture the secondary battery pack, to relatively reduce a defect rate, and configure the secondary battery pack so that the secondary battery pack does not have any creases formed on the outer face thereof, i.e., a pure and clean external appearance when compared to the secondary battery pack of the conventional internal type in which the PCM is isolated using a tape.
    [038] Furthermore, the secondary battery assembly, according to the present invention, is configured to have a structure in which the PCB is mounted in the sealed surplus portion formed at the upper end of 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 as compared to the conventional PCB mounting structure. Brief Description of Drawings
    [039] The above and other objectives, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the attached drawings, in which: Figure 1 is an exploded perspective view of a set of secondary battery in accordance with an embodiment of the present invention; Figures 2 to 7 are perspective views showing a method of manufacturing the secondary battery assembly of Figure 1; Figure 8 is a perspective view of a secondary battery assembly , according to another embodiment of the present invention; and Figure 9 is a series of perspective views showing a frame in accordance with a further embodiment of the present invention. Detailed Description of the Invention
    [040] Now, the exemplary embodiments of the present invention will be described in detail with reference to the attached drawings. However, it should be noted that the embodiments will be described only for a better understanding of the present invention and therefore the scope of the present invention is not limited to the illustrated embodiments.
    [041] A secondary battery pack, according to an embodiment of the present invention, includes a battery cell that has four sealed outer circumferences and a safety element mounted on a given outer circumference that has a surplus portion, which is 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 can be a protection circuit, and the second safety element can be a positive temperature coefficient (PTC) element, a fuse, or a thermal cut-off (TCO) element. Also, 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, can be a PCM. The PCM can include a protection circuit board and a box in which the protection circuit board is disposed. For the sake of convenience of description, a PCM will be described being adopted as the security element, and the PCM will be described by including a protective circuit board (PCB) in this specification, in which, however, the security element, of according to the embodiment, the present invention is not limited.
    [043] Hereinafter, a secondary battery pack, according to an embodiment of the present invention, will be described with reference to Figure 1. Figure 1 typically shows an exploded perspective view of a secondary battery pack, according to an embodiment of the present invention.
    [044] Referring to Figure 1, a secondary battery pack 500 may include an anode terminal 120, a cathode terminal 110, a battery cell 100, a PCM 300 and a frame 400.
    [045] A battery cell 100, according to an embodiment of the present invention, is a pouch-shaped battery cell configured so that an electrode assembly of a cathode/separator/anode structure is arranged in a battery box made of a laminated sheet which includes a metal layer and a resin layer in a sealed state, wherein, however, the battery cell according to the embodiment of the present invention is not limited.
    [046] Referring to Figure 1, the battery cell 100 includes a sealed excess portion 130 formed on one face thereof and an anode terminal 120 and a cathode terminal 110 exposed on the sealed excess portion 130. The term 'face' used in this descriptive report indicates an arbitrary face of a four-faced tetrahedron, and includes a side, section, or end. Also, in this specification, a sealed portion that has an overflow space formed in one of the sealed outer circumferences formed when an electrode assembly is disposed in a battery box made of a laminated sheet in a sealed state is referred to as a sealed overflow portion 130. However, a person of common knowledge in the art to which the present invention belongs will appreciate that the excess sealed portion may be replaced by terms such as a thermal welded excess portion and a sealed terrace, provided that the specified terms have the same sense as the sealed surplus portion.
    [047] An anode terminal 120 and a cathode terminal 110, according to an embodiment of the present invention, are conductive elements in plate format. Anode terminal 120 and cathode terminal 110 are electrically connected to a PCB 200 of a PCM 300, which will be described hereinafter.
    [048] Referring to Figure 1, PCB 200 is a board that includes a protection circuit. A PCB can be referred to as a protection 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 to control overcharge, overdischarge and overcurrent of the battery. In addition to the protection circuit and the two connecting parts 220 and 230, the PCB 200 may additionally include an external input and output terminal 210 connected to the board through an interconnecting part 211 connected to one end of the board, as shown in Figure 1.
    [049] An external input and output terminal 210, in accordance with an embodiment of the present invention, is not particularly limited, as long as the external input and output terminal can be electrically connected to PCB 200 to supply current to an external device, such as a charger for the battery cell 100 or supplying current from the battery cell 100 to an external device such as a cell phone, an MP3 player, etc. For example, the external input and output terminal 210 can be configured to have a board frame that has a connector 212 mounted on one end of it.
    [050] Also, different from the embodiment shown in Figure 1, the external input and output terminal can be formed on the board in which the anode terminal connecting part and the cathode terminal connecting part are formed without being connected to the PCB 200 through the interconnect part. A secondary battery pack with the construction set out above is shown in Figure 8. In a case where an external input and output terminal is formed on a PCB, openings are formed in a region of a PCM 420 box (see Figure 8) , on which the PCB is arranged, which corresponds to an external input and output terminal 430 (see Figure 8). The external input and output terminal can be electrically connected to an external device through the openings.
    [051] An anode terminal connecting part 220, according to an embodiment of the present invention, may include a part coupled to the PCB 200 and an extension part that can be bent when the anode terminal connecting part 220 is 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 200 and an extension portion that may be bent when the cathode terminal connecting part 230 is connected to the cathode terminal 110 of the battery cell 100.
    [052] As shown in Figure 1, the external input and output terminal 210, in accordance with the embodiment of the present invention, is configured to have a board structure that has a connector 212 mounted at one end thereof, which in the meantime , the external input and output terminal 210 is not limited. Also, as shown in Figure 1, the external input and output terminal 210 is configured to face in a direction opposite to a direction in which the anode terminal connecting portion 220 and the cathode terminal connecting portion 230 do. face, which, however, is just an example. According to another embodiment of the present invention, the external input and output terminal 210 can be configured to face in the same direction as the direction in which the anode terminal connecting part 220 and the cathode terminal connecting part 230 face. Also, the external input and output terminal can be located on the cathode terminal connecting part side.
    [053] A frame 400, according to an embodiment of the present invention, is configured to have an open structure to surround the PCB 200 and outer circumferences of the battery cell, so that the surface of a main body of the battery cell battery is externally exposed. Consequently, the dimensional stability of the frame 400 is high, and it is possible to greatly reduce the assembly time and process. Here, the assembly time means the time required for an assembly process of placing the PCB 200 and the battery cell on the frame 400 and assembly of the PCB 200 and the battery cell on the frame 400. The reduction of assembly time means the reduction of time required for the assembly process and therefore it is possible to greatly simplify the process.
    [054] The frame 400 can be of a size sufficient to receive the external circumferences of the battery cell 100 of the PCB 200 mounted on the sealed excess portion 130 of the battery cell 100. Also, the frame can be configured to have various structures for receive the PCB and the battery cell. A person of ordinary skill in the art to which the present invention belongs will appreciate that, as shown in Figure 9, the frame can be configured to have a structure that has at least one support, through which the bottom of the frame supports the battery cell (eg 440, 450, 460, 470 or 480 of Figure 9) to have a box structure in which the bottom of the frame is closed (eg 440 of Figure 9) to have a structure in the which openings are formed in the faces of the frame (eg 470 of Figure 9), or to have a structure obtained by combining the above structures. Also, the frame can be configured to have a structure in which at least one face of the frame extends to further support the battery cell (eg, 450 of Figure 9). Furthermore, in a case where the PCB 200 includes the external input and output terminal 210 connected thereto through the interconnecting part 211, as shown in Figure 1, an opening, through which the external input and output terminal 210 is exposed, may be formed on a face of frame 400 adjacent to the open face. For example, a slit-like opening 410 (see Figure 6) can be formed in the frame.
    [055] A secondary battery pack, according to another embodiment of the present invention, can be configured so that a safety element is additionally mounted between at least one of the electrode terminals, i.e., the anode terminal and/ or the cathode, battery cell and PCB terminal. 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 box together with the PCB, so that the structural stability of the safety element is guaranteed.
    [056] Consequently, it is possible to directly connect the cathode terminal of the battery cell to the cathode terminal connecting part of the PCB and connect one side of the safety element to the safety element connecting part disposed on the same face of the PCB at a state in which the anode terminal is connected to the other side of the safety element without shape deformation or additional use of the additional elements and therefore it is possible to stably mount the safety element, the structural strength is low, on the PCB thereby reducing a defect rate in a manufacturing process and improving manufacturing efficiency.
    [057] The safety element is an element that interrupts current when the battery cell temperature is increased to ensure safety. For example, the safety element can be a PTC element, the resistance of which increases as the temperature of the battery cell is increased, or a fuse, which is broken when the temperature of the battery cell is increased. However, the safety element is not limited to the PTC element and the fuse.
    [058] Hereinafter, a method of manufacturing the secondary battery pack shown in Figure 1 will be described with reference to Figures 2 to 7. Figures 2 to 7 are several perspective views of a secondary battery pack that illustrates a method of manufacturing the secondary battery pack.
    [059] Referring first to Figure 2, an overflow portion, i.e. a sealed overflow portion 130, is formed on one of the sealed faces of a battery cell 100, and an anode terminal 120 and a cathode terminal 110 of the cell of battery 100 are disposed in the sealed over portion 130. The over sealed portion 130 is of sufficient size to receive a PCB 200. One of ordinary skill in the art to which the present invention belongs will appreciate that the size of the over sealed portion 130 can be appropriately adjusted based on the capacity and shape of the battery cell.
    [060] Subsequently, as shown in Figure 2, a nickel plate 140 can be coupled to a portion of the cathode terminal 110, for example, by ultrasonic soldering. In a case where the nickel plate 140 is mounted on 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 cathode terminal connecting part. PCB made of nickel due to different properties.
    [061] Also, in another embodiment of the present invention, as previously described, an additional security element, such as a PTC element, can be selectively mounted between the anode terminal 120 and an anode terminal connecting part 220 to ensure stability.
    [062] Subsequently, as shown in Figure 3, an anode terminal connecting part 220 and a cathode terminal connecting part 230 formed in the PCB 200 are soldered to the anode terminal 120 and the cathode terminal 110 of the cell. battery 100, respectively, for example by spot welding. In a case where the nickel plate 140 is soldered to the cathode terminal 110, as shown in Figure 2, the cathode terminal connecting part 230 is soldered to the nickel plate 140.
    [063] Since the anode terminal connecting part 220 and the cathode terminal connecting part 230 include a part coupled to the PCB 200 and a foldable extension part, as described above, the terminal connecting part of anode 220 and cathode terminal connecting portion 230 of PCB 200 can be coupled to anode terminal 120 and cathode terminal 110 of battery cell 100, respectively, by soldering, so that PCB 200 is opposed to a face of the battery cell 100 on which the sealed surplus portion 130 is formed, as can be seen from Figure 3.
    [064] Referring to Figure 4 in conjunction with Figure 1, after the anode terminal connecting part 220 and the cathode terminal connecting part 230 are bent, an adhesive tape 160, which serves as an insulating tape , can be attached to an electrode terminal exposure region of the sealed excess portion 130 of the battery cell main body 100. In a case where the insulating tape is further attached to the electrode terminal exposure region of the sealed excess portion 130, as described above, it is possible to more effectively improve the insulating capability of the electrode lead exposure region. Also, in a case where the electrical tape is a double-sided tape, the double-sided tape provides the force of force coupling between the PCM box and the excess sealed portion when the PCM box is mounted on the PCB, thus further improving stability structural.
    [065] As shown in Figure 4, the PCB 200 is arranged in a parallel direction to the battery cell 100, so that the anode terminal connecting part 220 and the cathode terminal connecting part 230 of the PCB 200 do face up, and an external input and output terminal 210 of the PCB 200 faces down. Also, the PCB can be arranged in a direction perpendicular to the battery cell.
    [066] Referring to Figure 5, in order to assemble the PCB 200, connected to the anode terminal 120 and the cathode terminal 110 of the battery cell 100 through the anode terminal connecting part 220 and the connecting part of cathode terminal 230, to the sealed excess portion 130 of the battery cell 100, first, a face of the PCB 200 in which the anode terminal connecting part and the cathode terminal connecting part is bent, so that the face of PCB 200 is opposite to a face of battery cell 100 in which the sealed over portion 130 is formed, and the foldable extension portions of anode terminal connecting portion 220 and cathode terminal connecting portion 230 are bent, so that the PCB 200 is situated at the coupling portions between the anode terminal 120 and the anode terminal connecting part 220 and between the cathode terminal 110 and the cathode terminal connecting part 230. anode terminal 120 and cathode terminal 110 are bent. towards the face of the battery cell on which the sealed over portion 130 is formed, so that the PCB 200 is mounted on the over sealed portion 130. At this time, the other face of the PCB 200 is opposite the face of the PCB on which the anode terminal connecting part and cathode terminal connecting part are formed is opposite one face of battery cell 100, and anode terminal 120 and cathode terminal 110 of battery cell 100 face outwards of battery cell 100.
    [067] When the PCB 200 is mounted on the sealed surplus portion 130 formed on one face of the battery cell 100, as described above, the PCB 200 is mounted perpendicularly to the sealed surplus portion 130. In a case where it is difficult for the excess sealed portion 130 is of sufficient size, therefore, the size of the PCB 200 can be reduced.
    [068] A process of encircling the PCB 200 mounted on the sealed excess portion 130 of the battery cell 100 and the outer circumferences of the battery cell 100 using the frame 400 will be described with reference to Figures 6 and 7. As previously described in connection with Figure 1, frame 400 is configured to have an open structure to surround the PCB 200 and the outer circumferences of the battery cell 100 so that the surface of the main body of the battery cell 100 is exposed outwardly. Also, in a case where an external input and output terminal 210 is connected to the connecting parts of the PCB 200 through an interconnecting part, as shown in Figure 6, an opening, for example a slit-like opening 410, can be formed in a face of the frame 400 that corresponds to the interconnecting part 211 of the PCB 200, so that the external input and output terminal 210 is exposed outwardly. Since the interconnecting part 211 of the PCB 200 extends through the slit-like opening 410, the external input and output terminal 210 connected to the interconnecting part 211 is exposed to the outside.
    [069] As can be seen from Figure 6, the shape or size of the frame 400 can be appropriately adjusted based on the sealed excess portion 130 of the outer circumferences of the battery cell 100 so that the frame 400 can receive the PCB 200 and, at the same time, the outer circumferences of the battery cell 100 in the sealed excess portion 130. Also, the shape and size of the slit-like opening 410 formed in one face of the frame 400 are not limited to those shown in Figure 6 That is, the shape and size of the slit-type opening 410 is not particularly limited as long as the interconnecting portion 211 of the external input and output terminal 210 can extend through the slit-type opening 410.
    [070] Also, the coupling between the frame 400 and the PCB 200 and between the frame 400 and the outer circumferences of the battery cell 100 can be achieved by affixing an adhesive material to the inner part 411 of the frame 400. The adhesive material is interposed between two elements to couple the two elements together. The adhesive material can be, for example, a double-sided adhesive tape, to which, however, the adhesive material is not limited.
    [071] Figure 7 is a view showing a state in which the PCB 200 mounted on the sealed surplus portion 130 of the battery cell 100 and the outer circumferences of the battery cell 100 are disposed on the frame 400. 400, in accordance with the present invention, may be configured to surround the PCB 200 mounted on the sealed excess portion 130 and the outer circumferences of the battery cell 100 so that the external input and output terminal is externally exposed. For example, as shown in Figure 7, frame 400 can be configured to have an open structure to surround the PCB 200 and the outer circumferences of the battery cell 100 so that the surface of the main body of the battery cell 100 is externally exposed.
    [072] In a case where frame 400 is mounted on the battery cell, it is possible to stably fix the sealed outer circumferences of the battery cell to the main body of the battery cell while maintaining the total isolation state, thereby ensuring , more stably the state of electrical connection between the battery cell electrode terminals and the PCB.
    [073] Figure 8 is a perspective view of a secondary battery pack, according to another embodiment of the present invention, configured so that an external input and output terminal is mounted on a PCB. Referring to Figure 8, as previously described, a secondary battery pack 600 is configured to have a structure in which an external input and output terminal 430 is formed on one face of the PCB (not shown), so that the terminal external inlet and outlet 430 is exposed outwardly through an upper end 430 of the frame.
    [074] As apparent from the above description, the secondary battery assembly, according to the present invention, is configured so that the PCM, which includes the protective circuit board electrically connected to the cathode terminal and the terminal of the battery cell anode, is mounted in the sealed overflow 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 that make up the secondary battery pack, thus greatly improving the manufacturing efficiency when compared to the conventional secondary battery pack.
    [075] Also, the secondary battery set, according to the present invention, is configured so that the protection circuit board is disposed in the electrically insulating frame. Consequently, it is possible to protect and isolate the PCM which includes the protection circuit board. Also, it is possible to easily prevent the electrode terminals from being externally exposed without insulating the electrode terminals through the use of additional elements.
    [076] In addition, the secondary battery pack, according to the present invention, is configured so that the protective circuit board and the outer circumferences of the battery cell are mounted on the frame. Consequently, it is possible to easily manufacture the secondary battery pack, to relatively reduce a defect rate, and configure the secondary battery pack so that the secondary battery pack does not have wrinkles formed on the outer face thereof, i.e., an appearance pure and clean external when compared to a conventional secondary battery pack where the PCM is isolated using a tape.
    [077] In addition, the secondary battery assembly, according to the present invention, is configured so that the protective circuit board is mounted on the excess sealed 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, when compared to the conventional secondary battery pack.
    [078] However, in a general process of assembling the secondary battery pack, the connecting elements and the PCM are coupled, and an insulating tape that is attached at each step to the PCM set is mounted on the battery cell , as previously described. That is, the PCM assembly is mounted on the battery cell using a plurality of parts with the result that a plurality of processes is required, and the structural stability as well as the mechanical strength is low.
    [079] On the other hand, the protection circuit module, according to the present invention, is configured to have a structure in which the protection circuit board and the outer circumferences of the battery cell are mounted on the frame and therefore , it is possible to improve the structural stability of the battery pack, to greatly simplify the battery pack manufacturing process, to ensure excellent insulating ability, and to maximize the battery cell capacity in the battery pack that has the same standard as the conventional battery pack.
    [080] Also, in the manufacturing method, according to the present invention, it is possible to protect and insulate the PCM and the outer circumferences of the battery cell using the frame without an additional element, such as a label or an insulating tape. Also, the protective circuit board is electrically connected to the electrode terminals, the electrode terminals are bent and then the protective circuit board is mounted to the frame with the result that no exposed regions are formed during the process of bending and therefore an additional insulating element is not required.
    [081] Although the exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various additions and substitutions are possible, without departing from the scope and spirit of the invention, as described in the appended claims.
    权利要求:
    Claims (13)
    [0001]
    1. Secondary battery pack (500) comprising: 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, 300) electrically connected to the battery cell (100) via the anode terminal (120) and the cathode terminal (110), the PCM (300) comprises a protection circuit board ( 200), wherein the protective circuit board (200) is provided with an anode terminal connecting part (220) and a cathode terminal connecting part (230) connected to the anode terminal (120) and to the cathode terminal (110), respectively, the protective circuit board (200) is coupled to the anode terminal (120) and the cathode terminal (110) of the battery cell (100) through the connecting part of anode terminal (220) and cathode terminal connecting part (230) and is mounted on the sealed excess portion (130) of the battery cell (100), the protective circuit board (200) is further provided with a external input and output terminal (210), and the external input and output terminal (210) is fixed to the protection circuit board (200) through a part of interconnect (211) connected to an end of the protective circuit board (200); and the secondary battery pack (500) further comprises a frame (440) mounted on the PCM (300) and the battery cell (100) in order to encircle the PCM (300) and the battery cell (100) CHARACTERIZED by the fact that the frame (440) further comprises an opening (410) through which the interconnecting portion (211) extends, formed on a face adjacent to a larger area side of the frame (440) , and the frame (440) is formed in the shape of a box having a closed bottom.
    [0002]
    2. Secondary battery pack (500), according to claim 1, CHARACTERIZED by the fact that the frame (440) is configured to have a structure to surround the PCM (300) and thermally welded outer circumferences of the battery cell ( 100).
    [0003]
    3. Secondary battery pack (500) according to claim 1, CHARACTERIZED by the fact that the frame (440) is configured to have an open structure in which at least a portion of a surface of a main body of the cell The battery (100) is externally exposed in a state where the frame (440) is mounted on the PCM (300) and the battery cell (100).
    [0004]
    4. Secondary battery pack (500) according to claim 1, CHARACTERIZED by the fact that the frame (440) is configured to have a structure comprising at least one support to support a portion of a surface of a main body of the battery cell (100) in a state where the frame (440) is mounted on the PCM (300) and the battery cell (100).
    [0005]
    5. Secondary battery pack (500) according to claim 1, CHARACTERIZED by the fact that the frame (440) has at least one opening (410) formed on one side or a bottom thereof.
    [0006]
    6. Secondary battery pack (500) according to claim 1, CHARACTERIZED by the fact that the frame (440) is configured to have a structure in which at least one face of the frame (440) projects or extends to supporting a portion of a surface of a battery cell main body (100) in a state where the frame (440) is mounted to the PCM (300) and the battery cell (100).
    [0007]
    7. Secondary battery set (500), according to claim 1, CHARACTERIZED by the fact that the battery cell (100) is a battery cell (100) in plate format, and the anode terminal ( 120) and the cathode terminal (110) are conductive elements in plate form.
    [0008]
    8. Secondary battery pack (500), according to claim 1, CHARACTERIZED by the fact that the opening (410) is a slit-type opening.
    [0009]
    9. Secondary battery pack (500), according to claim 1, CHARACTERIZED by the fact that it additionally comprises an insulating tape further attached to an electrode terminal exposure region of the sealed excess portion (130).
    [0010]
    10. Secondary battery pack (500), according to claim 1, CHARACTERIZED by the fact that the protection circuit board (200) is mounted so that the protection circuit board (200) is opposite the face of the battery cell (100) on which the sealed excess portion (130) is formed.
    [0011]
    11. Secondary battery pack (500), according to claim 1, CHARACTERIZED by the fact that it additionally comprises a label to cover the battery cell (100).
    [0012]
    12. Secondary battery pack (500), according to claim 11, CHARACTERIZED by the fact that the label is configured to have a structure to cover the sealed outer circumferences of the battery cell (100).
    [0013]
    A method of manufacturing a secondary battery assembly (500) as defined in claim 1, comprising: a step of forming a battery cell (100) configured to have a structure in which an electrode assembly comprising cathodes, anodes , and spacers respectively disposed between the cathodes and the anodes, is disposed in a battery box in a sealed state, one of the sealed outer circumferences of the battery cell (100) having a surplus portion; a step of exposing an anode terminal ( 120) and a cathode terminal (110) in the sealed excess portion (130) of the battery cell (100) and mount a protective circuit board (200) having an anode terminal connecting part (220) and a cathode terminal connecting part (230) connected to the anode terminal and the cathode terminal, respectively, in the sealed excess portion (130); and a step of assembling a frame (440) so that the frame (440) receives the protective circuit board (200) mounted on the sealed excess portion (130) and surrounds the outer circumferences of the battery cell (100); that the protection circuit board (200) further comprises an external input and output terminal attached to the protection circuit board (200) via an interconnecting part (211) connected to one end of the protection circuit board (200 ); the method CHARACTERIZED in that the frame (440) comprises an opening (410) through which the interconnecting portion (211) extends, formed on a face adjacent to a larger area side of the frame (440) , and the frame (440) is formed in the shape of a box having a closed bottom.
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    同族专利:
    公开号 | 公开日
    KR20130018098A|2013-02-20|
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    KR20130018127A|2013-02-20|
    EP2731175B1|2018-12-26|
    EP2731175A4|2015-05-20|
    WO2013024990A2|2013-02-21|
    TW201330361A|2013-07-16|
    TWI482336B|2015-04-21|
    CN103875095A|2014-06-18|
    BR112014003152A2|2017-03-14|
    EP2731175A2|2014-05-14|
    KR101255546B1|2013-04-17|
    WO2013024990A3|2013-04-11|
    CN203150632U|2013-08-21|
    US20140023885A1|2014-01-23|
    US9905835B2|2018-02-27|
    JP2014526129A|2014-10-02|
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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]|
    2020-06-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-06-15| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| 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
    KR10-2011-0080667|2011-08-12|
    KR20110080667|2011-08-12|
    KR1020120014803A|KR20130018098A|2011-08-12|2012-02-14|Secondary battery pack of novel structure|
    KR10-2012-0014803|2012-02-14|
    PCT/KR2012/006131|WO2013024990A2|2011-08-12|2012-08-01|Secondary battery pack|
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