• 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:
    Disclosed is a pack battery having an extremely excellent seismic structure, which minimizes the malfunction of a protection circuit caused by leakage of a battery or intrusion water. In addition, a pack battery is disclosed in which a protection circuit is very compact and has a waterproof, seismic, and insulating structure so that the protection circuit can be installed at any position in a case. The pack battery is connected in series with the secondary battery 2 to control the switching element 7 for controlling the current flowing through the battery, and a control circuit for controlling the switching element 7 by detecting one or both of the battery voltage and the battery current ( The protective circuit 3 provided with the 8) is incorporated in the case 1 together with the secondary battery 2. The protection circuit 3 is made into one package unit 9 by molding into a single package using an insulating material. The 1 package unit 9 is installed in the storage space 14 formed in the insulation holder 6, and the 1 package unit 9, the insulation holder 6 and the secondary battery 2 are stored in the case 1. do.
    公开号:KR20000057767A
    申请号:KR1020000002232
    申请日:2000-01-18
    公开日:2000-09-25
    发明作者:와따나베아쓰시；이노우에야스시；구보료스께；이시하마게이지；야마가미야스히로；마쓰다다꾸야；다마이미끼따까
    申请人:다카노 야스아키；산요 덴키 가부시키가이샤；
    IPC主号:
    专利说明:

    Pack battery {PACK BATTERY}
    The present invention relates to a pack battery incorporating a secondary battery and a protection circuit.
    A pack battery incorporating a protection circuit has already been developed (Japanese Patent Laid-Open No. 8-329913). As shown in FIG. 1, the pack battery described in this publication has a lithium ion secondary battery, which is a rectangular battery 16, and a protective circuit 3. The protection circuit 3 detects the current and voltage of the battery so as to control the battery from being used in an abnormal state. The protection circuit 3 prevents overdischarging and overcharging of the battery, or controls such that excessive current does not flow in the battery. The protection circuit 3 is connected in series with switching elements, such as FETs, in order to control the electric current which flows through a battery. The switching element is controlled by the control circuit. The control circuit detects the voltage or current of the battery and controls the switching element on-off. When the control circuit turns the switching element off, the current flowing to the battery is cut off.
    In the pack battery shown in the figure, a printed circuit board 17 on which the protection circuit 3 is mounted is disposed between the square battery 16 and the case 1. A plurality of electronic components for realizing the switching element and the control circuit for controlling the switching element on-off are fixed to the printed board 17. Moreover, the insulating paper 18 is arrange | positioned on both surfaces of the printed board 17 in order to insulate the electronic component fixed to the printed board 17. As shown in FIG.
    In the pack battery shown in Fig. 1, the switching element and the control circuit are mounted on the surface of the printed board, so that the protection circuit may fail due to the electrolyte leaked from the battery, and thus may not operate normally. This is because the electrolytic solution may corrode the metal part adhering to the surface of the printed board or short the conductive portion by migration. Since the protection circuit protects the battery when the battery is not used in a normal state, it is particularly important to operate normally when it is used in an abnormal state in which an electrolyte leaks from the battery. For this reason, it is important for the protection circuit to reliably operate even when the electrolyte leaks out to protect the battery.
    Moreover, water may invade when using a pack battery. Water penetrated into the pack battery, like the electrolyte, adversely affects the electronic components of the protection circuit mounted on the printed circuit board, or corrodes the metal parts and inhibits the normal operation of the protection circuit. This defect can be eliminated by making the case of the pack battery completely waterproof. However, since the case of the pack battery needs to expose the electrode terminals and the like to the outside, it cannot be a complete waterproof structure. For this reason, it is very important how normal it can operate when water invades.
    And it is very difficult to make a sufficient earthquake-resistant structure for the pack battery which mounts a switching element and a control circuit on a printed board. This is because, when the pack battery vibrates, electronic components of the switching element or control circuit connected to the printed circuit board vibrate. In addition, since the electronic component is fixed to the conductive film adhered to the surface of the printed board, there is a disadvantage that the conductive film is easily peeled off due to vibration. For this reason, the pack battery which mounted the electronic component of a protection circuit on a printed circuit board, when it is assembled by the method of applying vibration, such as ultrasonic welding of a case, for example, breaks | disappearance or missing of the built-in electronic component. There is a possibility of causing (i).
    In the conventional pack battery, since the protection circuit becomes large, the installation position in the case is restricted. For this reason, it may not always be possible to install it closer to an ideal position, for example, the part to which a protection circuit is connected. Therefore, there are some disadvantages such as lengthening of the lead member connecting the protection circuit.
    The present invention has been developed for the purpose of solving such drawbacks of conventional pack batteries. An important object of the present invention is to provide a pack battery having an extremely excellent seismic structure, minimizing the malfunction of a protection circuit generated due to leakage or intrusion of the battery.
    In addition, another important object of the present invention is to provide a pack battery which can be installed at any position in the case by making the protection circuit extremely compact and having a waterproof, earthquake-resistant, and insulating structure.
    1 is an exploded perspective view of a conventional pack battery.
    2 is an exploded perspective view of a pack battery of an embodiment of the present invention.
    3 is a circuit diagram of a protection circuit of a pack battery of an embodiment of the present invention.
    4 is a front view of one package unit incorporated in the pack battery of the embodiment of the present invention.
    FIG. 5 is a plan view of an insulated substrate of one package unit shown in FIG. 4. FIG.
    FIG. 6 is a cross-sectional view of the insulating substrate of the one package unit shown in FIG. 4. FIG.
    7 is a front view showing another example of one package unit.
    FIG. 8 is a plan view of one package unit shown in FIG. 7. FIG.
    FIG. 9 is a plan view of an insulated substrate of one package unit shown in FIG. 7; FIG.
    10 is an exploded perspective view of the rechargeable battery and the insulating holder of the pack battery shown in FIG. 2;
    11 is an exploded perspective view of a pack battery according to another embodiment of the present invention.
    12 is a perspective view showing a state in which the pack battery shown in FIG. 11 is assembled.
    13 is an exploded perspective view of a pack battery according to another embodiment of the present invention.
    14 is a perspective view showing a state in which the pack battery shown in FIG. 13 is assembled.
    15 is an exploded perspective view of a pack battery according to another embodiment of the present invention.
    Explanation of symbols on the main parts of the drawings
    One … Case 1A… Bottom case 1B. Upper case
    2 … Secondary battery 2A. Wide surface
    3…. Protection circuit 4. Electrode terminal 5. Electrode window
    6. Insulated holder 7. Switching element 8... Control circuit
    9. 1 package unit 9A. Insulated substrate 9B. Surface insulation layer
    10... Lead member 11. Test point hole
    12... Test point 13. PTC 14. Storage space
    15... Lead plate 16. Square battery
    17. Printed circuit board 18. Insulated paper 19. Printed board
    20... Description 21. Insulating resin 22. Surface electrode
    23. Cut-out 24. Conductive foil 25. Electrode terminal holder
    B +…. Surface electrode B-.. Surface electrode V-.. Surface electrode
    The pack battery of the present invention is connected in series with the secondary battery 2 to control the switching element 7 for controlling the current flowing through the battery and to control the switching element 7 by detecting one or both of the battery voltage and the battery current. The protective circuit 3 with the control circuit 8 is incorporated in the case 1 together with the secondary battery 2. The protection circuit 3 with the switching element 7 and the control circuit 8 is molded into a single package using an insulating material and formed into one package unit 9. The 1 package unit 9 is arrange | positioned in the storage space 14 formed in the insulation holder 6. The one package unit 9, the insulating holder 6 and the secondary battery 2 are housed in the case 1.
    The pack battery of claim 2 of the present invention uses a rectangular lithium ion secondary battery as the secondary battery 2.
    The pack battery of claim 3 of the present invention is a plastic case formed by ultrasonic welding of a case 1 in which a secondary battery 2, one package unit 9, and an insulation holder 6 are incorporated.
    The pack battery of claim 4 of the present invention includes one package unit 9 formed by molding the protective circuit 3 with an epoxy resin.
    In the pack battery according to claim 5 of the present invention, the upper and lower surfaces of one package unit 9 are covered with an insulating material, and one end of the lead member 10 is embedded in the one package unit 9. The lead member 10 of the one package unit 9 is connected to the secondary battery 2 and the electrode terminal 4 of the pack battery.
    The pack battery according to claim 6 of the present invention is provided with the insulating holder 6 adjacent to the secondary battery 2. This insulation holder 6 forms the storage space 14 opened to the side which opposes the secondary battery 2. 1 package unit 9 is arrange | positioned in this storage space 14, and the insulation holder 6 is arrange | positioned at the edge part of the secondary battery 2.
    In the pack battery according to claim 7 of the present invention, one package unit 9 is fixed to the printed board 19. The lead member 10 is connected to the printed board 19. This one package unit 9 is attached to the insulating holder 6 in a state of being fixed to the printed board 19.
    In the pack battery according to claim 8 of the present invention, one package unit 9 is made rectangular and surface electrodes B +, B-, and V- are formed at the corners of the bottom surface.
    In the pack battery according to claim 9 of the present invention, the surface electrodes B + and (B-) connected to the positive (+) side and the negative (-) side of the secondary battery 2 are each other of the one package unit 9. It is formed at the opposite end.
    In the pack battery of claim 10 of the present invention, as the secondary battery 2, a thin battery is incorporated in the case 1, and a lead plate 15 for connecting the one package unit 9 to the secondary battery 2 is provided. It is arrange | positioned along the side edge of 2 A of wide surfaces of the secondary battery 2. In this specification, a "thin battery" means the battery whose thickness is smaller than the width | variety of an external appearance.
    In the pack battery according to claim 11 of the present invention, as the secondary battery 2, a thin battery is incorporated in the case 1, and one package unit 9 is rectangular. The lead member 10 is connected to the rectangular one package unit 9 so as to protrude longitudinally from the end. The lead member 10 protruding from the end of the first package unit 9 is connected to the protruding electrode of the secondary battery 2. The rectangular one package unit 9 is disposed in the storage space 14 of the insulating holder 6 in a posture parallel to the end of the elongated secondary battery 2.
    Embodiment of the invention
    Next, embodiments of the present invention will be described with reference to the drawings. However, the following examples exemplify a pack battery for embodying the technical idea of the present invention, and the present invention does not specify the pack battery as the following.
    In this specification, in order to understand a claim, the number corresponding to the member shown in an Example is attached to the member described in the "column of a claim" and "column of a means for solving a problem". However, the member shown in a claim is not specified to the member of an Example at all.
    The pack battery shown in the exploded perspective view of FIG. 2 incorporates a secondary battery 2 and a protection circuit 3 in the case 1. The case 1 consists of the bottom case 1A and the top case 1B which are thermoplastic plastic molded articles. However, the pack battery of this invention does not necessarily need to make the case a plastic molded article, For example, you may comprise a case with a heat shrink film. The case 1 is a box shape of the bottom case 1A, and incorporates a secondary battery 2 and a protection circuit 3 therein. In addition, the electrode case 5 which exposes the electrode terminal 4 to the exterior is formed in the bottom case 1A. The electrode window 5 arrange | positions the electrode terminal 4 fixed to the insulation holder 6 inside, and exposes the electrode terminal 4 to the outside. The case 1 ultrasonically welds the circumferential edge of the upper case 1B along the circumferential edge of the opening with the secondary battery 2, the protection circuit 3, and the insulating holder 6 embedded in the bottom case 1A. Is formed.
    The ultrasonically welded case 1 can be firmly connected and fixed so that the opening is not peeled off without using the connecting member. For this reason, there is an advantage in that a large amount of high quality pack batteries can be produced at low cost. However, the case can also be assembled to have a structure that is bonded or sandwiched. The case may not be made of a plastic molded product and a metal, but may have a structure in which a secondary battery, a single package unit, and an insulating holder are connected and covered with a heat shrink film.
    In the pack battery of the figure, as the secondary battery 2, a lithium ion secondary battery which is a rectangular battery is incorporated in the case 1. However, the pack battery of this invention does not identify a secondary battery as a lithium ion secondary battery. Secondary batteries may be used as secondary batteries, such as nickel-hydrogen batteries or nickel-cadmium batteries, which are already in use or are now being developed. The secondary battery does not necessarily have to be a square battery. The secondary battery may be a cylindrical battery, a coin battery, or the like.
    The protection circuit 3 has a switching element which is connected in series with the secondary battery 2 and controls the current which flows through a battery, and a control circuit which detects either or both of a battery voltage and a battery current, and controls a switching element. The circuit diagram of the protection circuit 3 is shown in FIG. 3, and the front view is shown in FIG. The protection circuit 3 of this figure is provided with the FET which is the switching element 7 connected in series with a battery, and the control circuit 8 which controls this FET. Transistors may be used in place of FETs for switching devices.
    The switching element 7 of the figure connects the FET which controls the charge state of a battery, and the FET which controls a discharge state in series. The FET connects the gate to the control circuit 8 and is controlled on and off by a signal output from the control circuit 8. In the steady state, the control circuit 8 turns on both FETs. If an abnormal condition occurs while charging the battery, the FET controlling charging is turned off to cut off the charging current. When the battery is in an abnormal state while discharging the battery, the FET controlling the discharge is turned off to interrupt the discharge current.
    The control circuit 8 controls the switching element 7 by detecting the voltage of the battery and the current flowing through the battery. When the battery voltage becomes higher than the set maximum voltage during charging, a signal for turning off the FET controlling the charging is output to prevent overcharging of the battery. In addition, in order to prevent overdischarge of the battery, when the voltage of the battery becomes lower than the set minimum voltage, a signal for turning off the FET controlling the discharge is output. The control circuit 8 detects when the output side of the pack battery is short-circuited and an overcurrent flows to the battery, or an overcurrent flows due to an accidentally high charge voltage applied to the pack battery. Output
    The protection circuit 3 of FIG. 3 consists of the switching element 7 which consists of a pair of FET, the control circuit 8, a resistor, and a capacitor | condenser. As shown in FIG. 4, the protection circuit 3 made of these electronic components is molded into a single package using an insulating material to form one package unit 9. The insulating material is an epoxy resin. Since the epoxy resin molding the protective circuit 3 can be cured at room temperature without mixing and heating two liquids, a large amount can be produced with high efficiency. In addition, there is a hard and sufficient strength in the hardened state. In addition, since it has excellent insulation and water resistance, it is possible to mold the protection circuit 3 in an ideal state. However, a urethane resin, a silicone resin, etc. can also be used instead of an epoxy resin as an insulating material which molds a protective circuit.
    The one package unit 9 shown in FIG. 4 incorporates the protection circuit 3 in the package which laminated | stacked two layers of insulating materials. The single package unit 9 is formed by stacking the surface insulating layer 9B in close contact with the upper surface of the lower insulating substrate 9A. In the insulating substrate 9A, an FET for realizing a protection circuit, an IC of a control circuit, a resistor, and a capacitor are fixed. In addition, the lead member 10 is connected to the insulating substrate 9A as shown in the plan view of FIG. 5.
    The internal structure of 9 A of insulating boards is shown in sectional drawing of FIG. The insulating substrate 9A shown in this figure fixes parts for realizing protection circuits such as FETs, ICs of control circuits, resistors, and capacitors on the surface of the substrate 20 such as glass epoxy resin and ceramics, and the surface thereof. Is coated with the insulating resin 21, and these parts are embedded in the insulating resin 21. 9 A of insulated substrates provide the surface electrode 22 in the upper surface in a figure.
    The lead member 10 is connected to the surface electrode 22 of the insulated substrate 9A, and the surface insulating layer 9B is laminated on the upper surface of the insulated substrate 9A. When the surface insulating layer 9B is molded from plastic, the lead member 10 can be connected and the insulating substrate 9A can be inserted and fixed. This one package unit 9 molds the protection circuit 3 in the state which coats both upper and lower sides with the insulating material, and embeds one end of the lead member 10 in the package, and fixes it. In one package unit 9, the insulating substrate 9A and the surface insulating layer 9B are made of the same insulating material or different insulating materials.
    A test point hole 11 is formed in the surface insulating layer 9B of the one package unit 9 shown in FIG. The test point hole 11 is opened in the position which can contact the test point 12 of the protection circuit 3 fixed to the upper surface of 9 A of insulating boards. The test point hole 11 allows the contact pin 12 to be contacted by inserting a connecting pin when the protective circuit 3 is tested. The test point hole 11 is typically occluded with a removable seal or filler.
    As shown in FIG. 7 and FIG. 8, the one package unit 9 may be connected to the lead member 10 by connecting this to the printed board 19. The bottom view of the one package unit 9 connected to the printed circuit board 19 is shown in FIG. The one package unit 9 of the said figure makes the whole shape rectangular, and arrange | positions the surface electrode in the four corner parts of a bottom face. As shown in the figure, the surface electrode of the corner portion is formed to be in contact with two sides of one package unit 9, or is formed to be in contact with one side although not shown. One package unit 9 having such a structure has an advantage of confirming whether or not the surface electrode is correctly connected to the printed board 19 in the state of being soldered to the printed board 19. In addition, as shown in FIG. 9, the cutout part 23 is formed in the side edge of a surface electrode, and the connection state of the surface electrode and the printed circuit board 19 can be confirmed more correctly.
    The one package unit 9 shown in FIG. 9 forms surface electrodes B + and B- connected to the positive (+) side and the negative (-) side of the secondary battery 2 at opposite ends. Since this one package unit 9 can be spaced apart from the surface electrodes B + and (B-), there is an advantage that the + and-short circuits of the battery can be effectively prevented. In particular, one package unit 9 in this figure arranges the surface electrodes B + and (B-) at the corners of the upper side, and connects the surface electrodes B- and the surface electrodes V connected to the electrode terminals of the pack battery. -) Is placed in the left corner. The single package unit 9 of such a structure can wire the surface electrode B- and the surface electrode V- in the shortest to reduce the resistance therebetween.
    The one package unit 9 shown in FIG. 9 arranges the surface electrodes TI and T2 serving as the two test points on the upper side of the surface electrode side, and the surface electrodes serving as the test points connected to the surface electrode B +. T1 is disposed close to the surface electrode B + with the resistance therebetween, and the surface electrode T2, which is a test point connected to the surface electrode V-, is placed on the surface electrode B- with the resistance therebetween. Place close. One package unit 9 having such a structure can reduce the malfunction of the protection circuit when moisture invades the pack battery. This is because the short-circuit currents of the surface electrodes B + and B- and the surface electrode V- can be prevented by interposing the surface electrode T1 and the surface electrode T2 which are test points.
    1 package unit 9 is connected to the surface of the printed circuit board 19 by soldering, as shown in the plan view of FIG. 8. One package unit 9 is connected to the printed board by, for example, reflow soldering. The conductive foil 24 is fixed to one surface of the printed board 19. The surface electrode of the one package unit 9 is connected to the conductive foil 24 of the printed circuit board 19, and the lead member 10 is soldered thereto and connected thereto. The structure in which the one package unit 9 is connected to the printed circuit board 19 and connected to the lead member 10 has the advantage that the lead member 10 can be connected to the one package unit 9 with a simple installation.
    In the pack battery, one package unit 9 containing the protection circuit 3 is installed in the case using the insulating holder 6. One package unit 9 has a structure in which the lead member 10 is embedded as shown in FIG. 4, or the lead member 10 is fixed to the printed circuit board 19 as shown in FIG. 7. Is installed in the case with the insulating holder 6 interposed therebetween. The insulating holder 6 is a plastic molded article, and as shown in FIG. 10, a storage space 14 containing one package unit 9 without a printed board or one package unit 9 fixed to the printed board is provided. It is formed in the inner side, and the electrode terminal 4 is inserted and fixed to the surface.
    The insulating holder 6 shown in the figure forms the storage space 14 on the side opposite to the secondary battery 2. The storage space 14 is opened to a size that can accommodate the one package unit 9 almost seamlessly. The insulating holder 6 has a structure in which the one package unit 9 and the storage space 14 are attached to each other in order to install the one package unit 9 at the correct position of the storage space 14, or one package. It is set as the structure which pinches | attaches the printed circuit board which connects the unit 9, and the insulation holder 6.
    The pack battery shown in FIG. 2 incorporates the secondary battery 2 which is a thin battery in the case 1. As shown in FIG. The insulation holder 6 is arrange | positioned at the edge part of the secondary battery 2, and the 1 package unit 9 is arrange | positioned between the insulation holder 6 and the secondary battery 2. The insulation holder 6 makes the width substantially the same as the width of the secondary battery 2. The insulating holder 6 fixes the electrode terminal on the upper surface, forms the storage space 14 on the inner surface, and incorporates one package unit 9 having the structure shown in FIG. 4 or 7. The insulating holder 6 is formed by integrally molding sidewalls on both sides of the lower surface, and cuts a part of the sidewall, and houses the package unit 9 using the cutout portion as the storage space 14.
    The pack battery of the present invention may have a structure in which one package unit 9 is housed therein, with the inner side of the side wall formed in the insulating holder as a storage space. The insulating holder having such a structure is a state in which the opening of the storage space is closed by a printed circuit board on which one package unit 9 is fixed, that is, the one opening of the storage space is blocked by the printed circuit board by putting one package unit inside the storage space. It can be made into a structure.
    The insulation holder 6 shown in the figure accommodates one package unit 9 in the space created by the protruding electrode of the secondary battery 2 as the storage space 14. The one package unit 9 accommodated here connects the lead member 10 which protrudes in the longitudinal direction from the rectangular end part to the protruding electrode of the secondary battery 2, and connects the rectangular one package unit 9 to elongate. It is provided in the storage space 14 of the insulating holder 6 in the attitude | position parallel to the edge part of the secondary battery 2. This structure makes it possible to connect the lead member 10 connected to the one package unit 9 to the protruding electrode of the secondary battery 2 for a short distance. For this reason, the printed circuit board 19 which fixes the 1 package unit 9 and the 1 package unit 9 can be reliably fixed to the fixed position. In addition, since one package unit 9 can be accommodated by effectively utilizing the space generated by the protruding electrode of the secondary battery 2, the appearance of the pack battery is reduced and the protection circuit 3 is incorporated. There is an advantage to this.
    In the pack battery shown in Figs. 11 to 14, the lead plate 15 is disposed on the surface of the thin battery. The pack battery of these figures fixes one package unit 9 to the printed circuit board 19, and is attached to the insulation holder 6. As shown in FIG. The lead plate 15 which connects the secondary battery 2 to the one package unit 9 is located on the wide surface 2A of the wide width of the secondary battery 2 and is disposed along the side edges. The lead plate 15 connects one end to the electrode of the secondary battery 2, and the other end to the one package unit 9 and the printed board 19. The lead plate 15 is arranged at the position and stored in a case (not shown). The pack battery having this structure can incorporate the lead plate 15 by effectively utilizing the volume in the case. This is because in the case of a thin rectangular battery, when the internal pressure increases, a central portion of the surface having a wide width becomes bulged, so that a gap is formed between the case and the secondary battery 2, because the lead plate 15 can be provided in this gap. . In the secondary battery 2 having increased internal pressure, the central portion having a wide width is bulged, but the side edge thereof is not bulged. Since the lead plate 15 is disposed at the side edges which do not bulge, there is no need to enlarge the case in order to arrange the lead plate 15.
    The three lead members 10 connected to the one package unit 9 have a positive (+) side electrode terminal 4, a PTC 13, and a negative (-) side as shown in the circuit diagram of FIG. 3. It is connected to the electrode terminal 4. The PTC 13 is arranged to be connected in series with the battery and to contact the surface of the battery. The PTC 13 rapidly increases resistance when the battery temperature is raised to a set temperature. For this reason, when battery temperature becomes abnormally high, current of a battery hardly flows and it is cut off substantially. This pack battery can be more reliable because the battery is double-protected by the PTC 13 and the protection circuit 3. Packed cells that provide double protection for the battery can incorporate a fuse instead of PTC. In addition, a fuse, a PTC and a protection circuit may be incorporated. However, the pack battery of the present invention does not necessarily need to include a PTC, a fuse, or the like in addition to the protection circuit.
    The pack battery of the above structure is assembled by the following steps.
    (1) The one package unit 9 incorporating the protection circuit 3 is provided in the storage space 14 of the insulating holder 6.
    (2) The lead member 10 of the one package unit 9 is connected to the electrode terminal 4 of the insulation holder 6 by a method such as spot welding.
    (3) The insulating holder 6 is mounted at the position of the secondary battery 2, and the remaining lead member 10 of the one package unit 9 is spot welded to the secondary battery 2 and the PTC 13 by a method such as spot welding. Connect.
    (4) The other lead member of the PTC 13 is connected to the secondary battery 2 with the lead plate 15 interposed therebetween.
    (5) Put the secondary battery (2), the insulation holder (6), and the PTC (13) connected to each other in the correct positions of the bottom case (1A).
    ⑥ Connect the upper and lower cases (1) by ultrasonic welding or adhesively connecting the upper case (1B) to the opening of the bottom case (1A).
    As shown in FIG. 15, the pack battery may be one in which the electrode terminal holder 25 is connected to the electrode terminal 4 of the insulating holder 6. Such a pack battery changes the electrode terminal holder 25 connected to the electrode terminal 4 into various kinds according to the model of the electrical apparatus which incorporates a pack battery. In this way, the pack battery with the electrode terminal holder 25 uses the insulating holder 6 of the same shape, in other words, the connected secondary battery 2, the one package unit 9 and the insulating holder 6 are united. As a unit, only the electrode terminal holder 25 can correspond to a plurality of types of electric devices, and there is an advantage that a large amount can be produced with very high efficiency. The pack battery is connected to the electrode terminal holder 25 on the electrode terminal 4 of the insulated holder 6 and then placed in the correct position of the case, or the secondary battery, the 1 package unit 9, and the insulated position in the case. After inserting the holder, it is assembled by connecting the electrode terminal holder to the electrode terminal of the insulating holder.
    In the pack battery of the above embodiment, the secondary battery 2, one package unit 9 and the insulating holder 6 are housed in a case 1 which is a plastic molded article. A pack battery whose case is a heat shrink film is assembled by covering with a heat shrink film in a state in which one package unit, an insulation holder and a secondary battery are connected. This pack battery may have a structure in which, for example, an electrode terminal is formed in an insulating holder or a lead wire is drawn out without forming an electrode terminal to connect a connector having a built-in electrode terminal at the tip of the lead wire. It may be.
    The pack battery of the present invention has the advantage of minimizing the malfunction of the protection circuit caused by the leakage of the battery and the intrusion of water. This is because the pack battery of the present invention molds a protection circuit having a switching element for controlling the current flowing through the battery and a control circuit for controlling the switching element in a single package by using an insulating material and embedded in a case together with a secondary battery. to be. In the pack battery having such a structure, since the protection circuit is molded in a single package with an insulating material, it is possible to effectively prevent leakage of the battery leakage or intrusion water from invading the protection circuit. For this reason, the pack battery of this invention minimizes the malfunction and failure of the protection circuit resulting from a leakage liquid or intrusion water, and realizes the advantage that it can be used for a long time with confidence. In addition, the pack battery of the present invention has the advantage that the protection circuit is molded with an insulating material, so that the switching element and the control circuit can be reliably fixed at a predetermined position to have an extremely excellent earthquake-resistant structure.
    In the pack battery of the present invention, since the protection circuit including the switching element and the control circuit is molded into a single package using an insulating material, the protection circuit can be extremely compact. Therefore, the pack battery of the present invention has the advantage that the protection circuit has a waterproof, seismic, and insulating structure, and can be simply installed at any position in the case without being restricted by the installation position.
    权利要求:
    Claims (11)
    [1" claim-type="Currently amended] A switching element 7 connected in series with the secondary battery 2 to control the current flowing through the battery and a control circuit 8 for detecting one or both of the battery voltage and the battery current to control the switching element 7; A pack battery in which a protection circuit (3) having an integrated circuit is formed in a case (1) together with the secondary battery (2),
    The protective circuit 3 including the switching element 7 and the control circuit 8 is formed into a single package unit 9 formed by molding an insulating material into a single package, and the first package unit 9 is insulated. It is provided in the storage space 14 formed in the holder 6, and it is made by storing the said 1 package unit 9, the said insulation holder 6, and the said secondary battery 2 in the said case 1. Pack battery.
    [2" claim-type="Currently amended] The pack battery according to claim 1, wherein said secondary battery (2) is a square lithium ion secondary battery.
    [3" claim-type="Currently amended] The pack battery according to claim 1, wherein said case (1) containing said secondary battery (2), said first package unit (9) and said insulating holder (6) is an ultrasonic welded plastic case.
    [4" claim-type="Currently amended] The pack battery according to claim 1, wherein the first package unit (9) is formed by molding the protective circuit (3) with an epoxy resin.
    [5" claim-type="Currently amended] 2. The upper and lower surfaces of the first package unit 9 are covered with an insulating material, one end of the lead member 10 is embedded in the first package unit 9, and the lead member 10 is the secondary. A pack battery characterized by being connected to an electrode terminal (4) of a battery (2) and a pack battery.
    [6" claim-type="Currently amended] 2. The insulating holder (6) according to claim 1, wherein the insulating holder (6) has a storage space (14) opened to the side opposite to the secondary battery (2), and the first package unit (9) is provided in the storage space (14). And the insulating holder (6) provided so as to be adjacent to an end of the secondary battery (2).
    [7" claim-type="Currently amended] The method of claim 1, wherein the first package unit 9 is fixed to the printed board 19, the lead member 10 is connected to the printed board 19, the first package unit 9 and the printed board. A pack battery, characterized in that (19) is attached to said insulating holder (6).
    [8" claim-type="Currently amended] The pack battery according to claim 1, wherein the first package unit (9) is rectangular, and surface electrodes (B +), (B-), and (V-) are formed at edge portions of the bottom surface.
    [9" claim-type="Currently amended] 9. The surface electrodes (B +) and (B-) connected to the positive (+) side and the negative (-) side of the secondary battery (2) are opposite ends of the first package unit (9). A pack battery, characterized in that formed in.
    [10" claim-type="Currently amended] 2. The secondary battery according to claim 1, wherein the secondary battery (2) is a thin battery and the lead plate (15) for connecting the first package unit (9) to the secondary battery (2) is a thin battery. A pack battery, which is arranged along a side edge of the wide surface 2A of the battery 2.
    [11" claim-type="Currently amended] 2. The first package unit (1) according to claim 1, wherein the secondary battery (2) is a thin battery, and the first package unit (9) is rectangular and rectangular and protrudes longitudinally from an end of the first package unit (9). 9 is connected to the lead member 10, and the said lead member 10 which protrudes from the edge part of the said 1 package unit 9 is connected to the protruding electrode of the secondary battery 2, and the said 1 package unit is rectangular. A pack battery, characterized in that (9) is placed in the storage space (14) of the insulating holder (6) in a posture parallel to the end of the elongated secondary battery (2).
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    同族专利:
    公开号 | 公开日
    JP2000311667A|2000-11-07|
    TW437116B|2001-05-28|
    JP3454748B2|2003-10-06|
    HU227186B1|2010-10-28|
    HU0000867A3|2005-05-30|
    DE60040185D1|2008-10-23|
    EP1032108B1|2008-09-10|
    US6492058B1|2002-12-10|
    EP1032108A3|2005-04-13|
    EP1032108A2|2000-08-30|
    KR100535739B1|2005-12-09|
    HU0000867A2|2000-09-28|
    HU0000867D0|2000-04-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1999-02-26|Priority to JP99-49818
    1999-02-26|Priority to JP4981899
    1999-03-31|Priority to JP99-91624
    1999-03-31|Priority to JP09162499A
    2000-01-18|Application filed by 다카노 야스아키, 산요 덴키 가부시키가이샤
    2000-09-25|Publication of KR20000057767A
    2005-12-09|Application granted
    2005-12-09|Publication of KR100535739B1
    优先权:
    申请号 | 申请日 | 专利标题
    JP99-49818|1999-02-26|
    JP4981899|1999-02-26|
    JP99-91624|1999-03-31|
    JP09162499A|JP3454748B2|1999-02-26|1999-03-31|Battery pack|
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