JP5607684B2 - Assembled battery - Google Patents

Description

  The present invention relates to a battery pack having a film-clad battery and a storage case that stores the film-clad battery.

  Conventionally, voltage management of each battery constituting an assembled battery has been performed. By detecting the voltage of each battery, it is possible to identify a deteriorated battery, and it is possible to prevent the deteriorated battery from affecting other batteries and the entire assembled battery from being deteriorated.

  As a method for detecting the battery voltage, a method is generally used in which an electrode and a terminal are electrically connected by screwing, and a voltage detected by the terminal is measured. In Patent Document 1, a bus bar is connected to a tab extending from a stacked cell, the bus bar is connected in a stacking direction with a rod, and a voltage is detected by connecting a crimp terminal to the rod.

Japanese Patent Laid-Open No. 2002-185809

  However, when the screwing method is adopted for fixing the voltage extraction terminal, in the case of an assembled battery, there is a possibility that the screws interfere with each other by stacking the batteries. In order to avoid this, if it is attempted to provide a sufficient space between the screws, the thickness of the case containing the battery increases, and it becomes difficult to reduce the thickness. In order to reduce the thickness while avoiding interference between the screws, it may be possible to arrange the screws in a staggered arrangement. However, in this case, an operation of alternately arranging the screws occurs, which is complicated. Of course, in the case of the screwing method, the screwing operation is complicated. The problem of increasing the dimension in the stacking direction and the complexity of work is the same as the method of detecting the voltage by connecting a crimp terminal to the rod.

  Accordingly, an object of the present invention is to provide an assembled battery in which terminals can be easily mounted and the storage case can be made thin.

An assembled battery according to an embodiment of the present invention includes a plurality of film-clad batteries and a storage case that accommodates the plurality of film-clad batteries. Each of the plurality of film-clad batteries has an electrode extending from the film-clad battery. The storage case includes a plurality of storage portions that are arranged in parallel and spread in a planar shape, and a connecting portion that connects adjacent storage portions among the plurality of storage portions. Each of the plurality of film-clad batteries is stored in each of a plurality of storage units. Electrodes of adjacent film-covered batteries among the plurality of film-covered batteries are connected and accommodated in the connecting portion. On the outer surface of the connecting portion that is in the second direction that intersects the first direction in which the plurality of storage portions arranged in parallel are arranged in the first direction and that extends along the plane in which the storage portions are widened, An opening is provided for inserting a terminal that is electrically connected to the electrode of the film-clad battery along the second direction. The outer surface of the connecting portion where the first opening is formed is on the inner side of the outer surface of the storage portion in the second direction.

  Moreover, the assembled battery of another embodiment has a film exterior battery and the storage case which accommodates a film exterior battery. The film-clad battery has an electrode extending from the film-clad battery. The storage case has an extraction portion for extending the electrode to the outside. The electrode extended to the outside is accommodated in the extraction part. An opening for inserting a terminal that is electrically connected to the electrode of the film-clad battery is provided in the extraction portion.

  According to the present invention, the terminal can be easily mounted and the storage case can be made thin.

It is an external appearance perspective view of an example of the film-clad battery of this invention. It is an external appearance perspective view of an example of the perspective view of the assembled battery of this invention. It is an expansion perspective view of the connection part of the 1st Embodiment of this invention. It is an expansion perspective view of the voltage extraction terminal of the 1st Embodiment of this invention. It is a perspective view for demonstrating the method of mounting | wearing a voltage extraction terminal with a voltage extraction terminal. It is a figure which shows the bent state at the time of a voltage extraction terminal being inserted in a voltage extraction port. It is a partial cross section figure of the storage case of the state where the voltage extraction terminal was inserted in the voltage extraction port. It is a partial enlarged view of the voltage extraction opening part of the storage case of the 2nd Embodiment of this invention. It is a partial enlarged view of the voltage extraction opening part of the storage case of the 3rd Embodiment of this invention. It is a perspective view of the connector of the 3rd Embodiment of this invention. It is a top view of the storage case which can attach the connector shown in FIG. It is a partial enlarged view of the part which combined the connector with the connector coupling | bond part of the storage case.

(First embodiment)
FIG. 1 shows an external perspective view of the film-clad battery of this embodiment.

  The film-clad battery 1 of the present embodiment is formed by superposing a power generation element 2 having a positive electrode side active electrode, a negative electrode side active electrode, and an electrolyte, a metal film such as aluminum, and a heat-fusible resin film. And a laminate film 7. The film-clad battery 1 has a structure in which the power generation element 2 is sealed with two laminated films 7. That is, in the film-clad battery 1 of the present embodiment, among the four heat-seal portions 7a of the laminate film 7, first, three sides are heat-sealed to form a bag shape, and the remaining one side that is open The power generation element 2 is hermetically sealed by two laminate films 7 by exhausting the air from the inside and evacuating it, and then heat-sealing the remaining one side of the heat-sealing part 7a. It is.

  The power generating element 2 of the film-clad battery 1 may be a laminated type composed of a positive electrode side active electrode and a negative electrode side active electrode laminated via a separator, or a strip-like positive electrode side active electrode and a negative electrode side active electrode. A wound type having a structure in which the positive electrode side active electrodes and the negative electrode side active electrodes are alternately stacked by stacking the electrodes through a separator and then winding the electrodes into a flat shape may be used.

  In addition, as the power generation element 2, any power generation element used for a normal battery is applicable as long as it includes a positive electrode, a negative electrode, and an electrolyte. The power generation elements in a typical lithium ion secondary battery include a positive electrode plate in which a positive electrode active material such as lithium-manganese composite oxide and lithium cobaltate is applied on both sides of an aluminum foil, etc., and carbon that can be doped and dedoped with lithium. A negative electrode plate coated with a material on both sides of a copper foil or the like is opposed to each other with a separator interposed between them and impregnated with an electrolytic solution containing a lithium salt. Other examples of the power generation element 2 include power generation elements of other types of chemical batteries such as nickel metal hydride batteries, nickel cadmium batteries, lithium metal primary batteries or secondary batteries, and lithium polymer batteries. Furthermore, the present invention provides an external device that stores electrical energy and generates gas by chemical reaction or physical reaction, such as a capacitor element exemplified by a capacitor such as an electric double layer capacitor and an electrolytic capacitor. The present invention can also be applied to an electric device sealed with a film.

  A positive electrode terminal 3 and a negative electrode terminal 4 connected to the negative active electrode extend from the heat-sealed portion 7a in the short direction of the film-clad battery 1, respectively. Aluminum is often used for the positive electrode terminal 3, and copper or nickel is often used for the negative electrode terminal 4 due to its electrical characteristics. Hereinafter, the positive electrode terminal 3 and the negative electrode terminal 4 may be collectively referred to simply as electrodes or electrodes 3 and 4.

  FIG. 2 shows a perspective view of an assembled battery formed by electrically connecting a plurality of film-clad batteries.

  A storage case 10 shown in FIG. 2 is made of a material such as an insulating resin and can store three film-clad batteries 1 that are placed flat. In addition, flatly placing the film-clad battery 1 in the present invention means a state in which the film-clad battery 1 is arranged in a direction parallel to the main surface of the electrode terminal. An assembled battery 100 shown in FIG. 2 is an example in which storage cases 10 in which three film-clad batteries 1 are placed flat are stacked in six stages and connected in series.

  The storage case 10 has three storage parts 11, two connecting parts 12, and two extraction parts 13. The accommodating part 11 accommodates the main body part of the film-clad battery 1, and each accommodating part 11 is arrange | positioned in parallel in the direction where the electrode terminal of the film-clad battery 1 is extended. In the case of this embodiment, the storage part 11 is arranged in parallel in the longitudinal direction of the film-clad battery 1. The connecting portion 12 accommodates the positive electrode terminal 3 and the negative electrode terminal 4 which are electrically connected, and each connecting portion 12 is formed so as to connect the three accommodating portions 11 arranged in parallel.

  The width of the connecting portion 12 corresponds to the electrodes 3 and 4 and is formed narrower than the width of the storage portion 11.

  The extraction part 13 is an opening for extending the electrode terminals 3 and 4 to the outside, and is formed on both ends of the three storage parts 11 arranged in parallel. The connecting portion 12 is formed so as to cover the electrodes 3 and 4, but the extraction portion 13 has a part of the electrodes 3 and 4 extending. This is because a part of the electrode is extended from the take-out portion 13 to be connected to an electrode of another battery stacked and to be connected to an external circuit.

  The connecting portion 12 is formed with a voltage outlet 14 for inserting a voltage extraction terminal 20 for detecting a voltage. FIG. 3 is an enlarged perspective view of the connecting portion 12, and FIG. 4 is an enlarged perspective view of the voltage extraction terminal. FIG. 5 is a perspective view for explaining a method of mounting the voltage extraction terminal to the voltage extraction port, and FIG. 6 is a view showing a bent state when the voltage extraction terminal is inserted into the voltage extraction port. is there.

  The voltage extraction terminal 20 is formed by pressing a conductive metal thin plate such as aluminum. The voltage extraction terminal 20 has a substantially flat body portion 25 and a crimping portion 26 to which the conducting wire 40 is attached by crimping. The voltage extraction terminal 20 is inserted into the voltage extraction outlet 14 from the tip 27 side in the direction of arrow A in the figure (see FIGS. 4 and 5), and the contact portion 21 is brought into contact with the electrode terminals 3 and 4 to generate a voltage. Take out.

  The main body portion 25 includes a contact portion 21 formed to protrude in the z direction and a claw 22 protruding in the y direction.

  The abutting portion 21 is formed by punching leaving a part of the main body portion 25. That is, the abutting portion 21 is formed by bending the tip portion 27 side of the abutting portion 21 so as to be gradually raised in the z direction from the tip portion 27 toward the crimping portion 26. Since the contact portion 21 has such a configuration, it does not interfere with the insertion of the voltage extraction terminal 20 into the voltage extraction port 14. Further, since the abutting portion 21 has elasticity in the z direction, it can be abutted against the electrodes 3 and 4 as shown in FIG. can do. The end portion of the contact portion 21 on the crimping portion 26 side is bent downward. Since the end portion is bent in this manner, even when it is necessary to remove the voltage extraction terminal 20 inserted into the voltage extraction port 14, the contact portion 21 is caught by the voltage extraction port 14. It can be removed without breaking.

  The claw 22 has a wedge portion 22 a that gradually expands from the distal end portion 27 toward the crimping portion 26, and an engagement end 22 b that engages with the wall of the connecting portion 12.

  The width of the main body 25 is narrower than the width of the voltage outlet 14 so that it can be inserted into the voltage outlet 14. On the other hand, the width of the main body 25 portion where the claw 22 is formed is wider than the width of the voltage outlet 14 in order to engage with the opening side wall 14a of the voltage outlet 14. On the other hand, the dimension of the voltage extraction terminal 20 in the height direction is such that the height including the crimping portion 26 is lower than the height of the voltage extraction port 14.

  Next, a method for attaching the voltage extraction terminal 20 to the voltage extraction port 14 will be described with reference to FIGS. 5 and 6.

  First, it inserts in the arrow A direction in a figure from the front-end | tip part 27 side with respect to the voltage extraction port 14. FIG. When the voltage extraction terminal 20 is inserted up to the claw 22, the wedge portion 22a of the claw 22 is inserted along the side wall 14a of the opening so as to be inserted while being bent in the z direction as shown in FIG. . After the wedge portion 22a passes through the opening side wall 14a, the bent voltage extraction terminal 20 returns to its original flat shape due to its elasticity, and the engagement end 22b engages with the opening side wall 14a (FIG. 3 and FIG. 6 (b)). The engagement end 22b is caught by the opening side wall 14a, so that the voltage extraction terminal 20 is prevented from falling off from the voltage extraction port 14.

  Referring to FIG. 2, the voltage extraction terminals 20 are arranged in a line in the stacking direction at the connecting portion 12 and the extraction portion 13. As described above, the voltage extraction terminal 20 of the present embodiment is configured such that the height including the crimping portion 26 is lower than the height of the voltage extraction port 14. For this reason, even if the voltage extraction terminals 20 are arranged in a line in the stacking direction, electrical contact with each other can be avoided. In addition, the electrodes 3 and 4 are electrically contacted by the biasing force of the contact portion 21 and are engaged with the storage case 210 by the claws 22. Therefore, according to the present invention, the electrode and the terminal can be reliably connected without screwing the terminal to the electrode as in the prior art, and the problem due to screwing does not occur. That is, according to the present invention, it is possible to take out the voltage simply by inserting the voltage take-out terminal 20 into the voltage take-out port 14, and troublesome work such as fixing with screws is not required. Moreover, since the present invention does not have a screw that is bulky in the height direction, the assembled battery can be made thinner. Furthermore, since the voltage extraction portions are not arranged in a staggered manner, it is not necessary to pay attention to the order of stacking cases when stacking storage cases.

(Second Embodiment)
FIG. 8 shows a partially enlarged view of the voltage outlet portion of the storage case of the present embodiment. In addition, since the voltage extraction terminal of this embodiment is the same as what was demonstrated in 1st Embodiment, detailed description is abbreviate | omitted. FIG. 8A is a partially enlarged view of a voltage outlet portion for explaining a state in which a voltage outlet terminal is attached to the voltage outlet. 8B is a cross-sectional view taken along the line AA in FIG. 8A, and FIG. 8C is a cross-sectional view taken along the line BB.

  The storage case 210 of the present embodiment is provided with an insulating portion 220 that extends from the voltage extraction port 214 in the insertion / extraction direction of the voltage extraction terminal 20. The insulating part 220 includes two opposing side wall parts 220a and a bottom wall 220b. The length of the insulating portion 220 is set such that the crimp portion 26 does not protrude outside the storage case 210 in a state where the voltage extraction terminal 20 is attached. By stacking the storage cases 210, the bottom wall 220b of another stacked storage case 210 can be used as a ceiling, whereby the voltage extraction terminal 20 can be surrounded by an insulating wall.

  In the assembled battery, the voltage extraction terminals 20 of the present invention can be arranged in a line in the vertical direction. However, when the crimping portion 26 of the voltage extraction terminal 20 is exposed to the outside of the case and the thickness of the case is thin, a force is applied to the crimping portion 26 from the outside, so that other adjacent voltage extraction The terminal 20 may be contacted. On the other hand, in the case of the present embodiment, the voltage extraction terminal 20 is surrounded by the insulating portion 220 and thus does not come into contact with other adjacent voltage extraction terminals 20.

  In the storage case 210 of the present embodiment, the engagement holes 16 are formed in the opening side walls 214b on both sides of the voltage outlet 214, respectively. A case engagement claw 215 a provided on the lid 15 for sealing the film-clad battery 1 stored in the storage case 210 is fitted into the engagement hole 16. The case engaging claws 215 a are provided at portions corresponding to the electrodes 3 and 4 of the film-clad battery 1. Therefore, when the cover 15 is put on the storage case 210, the electrodes 3 and 4 are bent by the urging force from the contact portion 21 of the voltage extraction terminal 20 by fitting the case engagement claw 215 a into the engagement hole 16. Can be prevented. That is, in the present embodiment, the electrical connection between the voltage extraction terminal 20 and the electrodes 3 and 4 is ensured by urging the electrodes 3 and 4 with the abutment portion 21 while suppressing the deflection of the electrodes 3 and 4 with the lid 215. can do.

(Third embodiment)
FIG. 9 shows a partially enlarged view of the voltage outlet portion of the storage case of the present embodiment. FIG. 9A is a partially enlarged view of a voltage outlet portion for explaining a state in which a voltage outlet terminal is attached to the voltage outlet. FIG. 9B is a cross-sectional view taken along line CC of FIG.

  As for the voltage extraction terminal 320 of this embodiment, the nail | claw 322 is provided in the main-body part 325. FIG. The protruding direction of the claw 322 is opposite to the contact portion 321. The claw 322 engages with a hole 310 a formed on the bottom surface of the storage case 310. In the first embodiment, until the claw 22 passes through the opening side wall 314a, the main body portion 25 bends to allow the claw 22 to enter the voltage extraction port 314. On the other hand, in this embodiment, when the voltage extraction terminal 320 is inserted into the voltage extraction port 314, the main body 325 is not bent and the claw 322 is compressed. When reaching the hole 310a, the claw 322 in the compressed state is released. Thereby, the nail | claw 322 engages with the hole 310a, and it can prevent that the voltage extraction terminal 320 falls out from the voltage extraction port 314. FIG.

(Fourth embodiment)
In this embodiment, an example in which a fuse is connected to a voltage extraction terminal and this is integrated as a connector will be described.

  10 (a) and 10 (b) are perspective views of the connector of the present embodiment, and FIG. 10 (c) is a transparent side view. FIG. 11 shows a plan view of a storage case to which a connector can be attached. FIG. 12A is a partially enlarged view of a portion where the connector is coupled to the connector coupling portion of the storage case, and FIG. 12B is a cross-sectional view taken along the line DD in FIG.

  The connector 400 includes a fuse member 442, a voltage extraction terminal 420, and a connector main body 401. The connector 400 detects the voltage by being inserted into the connector coupling portion 411 formed in the storage case 410 and the voltage extraction terminal 420 being electrically connected to the electrodes 3 and 4.

  The fuse member 442 includes a flat plate-shaped holding member 441 and a fuse 440 attached to the upper surface of the holding member 441.

  The voltage extraction terminal 420 is a thin metal plate having elasticity. The front end portion 420 a is electrically connected to the electrodes 3 and 4, and the rear end portion 420 b is electrically connected to the fuse 440.

  The connector main body 401 is made of an insulating material such as resin, and is formed by integrally forming a terminal guide 402 and a fuse member guide 403.

  The terminal guide 402 is formed with a groove 402b for fitting and holding the voltage extraction terminal 420. When the voltage extraction terminal 420 is fitted into the groove 402b, the distal end portion 402a of the terminal guide 402 and the distal end portion 420a of the voltage extraction terminal 420 constitute an electrode clamping portion 460. That is, the electrode clamping part 460 is a clip constituted by the terminal guide 402 and the voltage extraction terminal 420 having elasticity, and the electrodes 3 and 4 are sandwiched between them.

  The fuse member guide 403 has a fuse member holding opening 406 for holding the fuse member 442. An opening 405 is formed in the fuse member holding opening 406 so that the fuse member 442 can be inserted and removed, and a holding groove 404 for holding the fuse member 442 inserted from the opening 405 is formed. The rear end portion of the terminal guide 402 is connected to the fuse member guide 403, and the groove 402b of the terminal guide 402 communicates with the inside of the fuse member holding opening 406 (see FIG. 10C). A rear end portion 420b of the voltage extraction terminal 420 fitted in the groove 402b of the terminal guide 402 passes through the communicating portion and extends into the fuse member holding opening 406. The rear end portion 420 b of the voltage extraction terminal 420 is electrically connected to a fuse 440 attached to the upper surface of the fuse member 442.

  A claw 422 is provided on the lower surface of the fuse member guide 403. The claw 422 engages with a hole 410 a formed on the bottom surface of the connector coupling portion 411. In addition, a grip 450 that extends rearward is provided on the lower surface of the fuse member guide 403. The gripping part 450 is used for a user to grip with a finger when the connector 400 is inserted into and removed from the connector coupling part 411.

  The fuse member guide 403 is formed wider than the terminal guide 402, and an arc-shaped abutting surface 3a is formed on the front surface of the fuse member guide 403. On the other hand, the width of the connector coupling portion 411 of the storage case 410 corresponds to the width of the fuse member guide 403, and the width of the voltage outlet 414 corresponds to the width of the terminal guide 402. A positioning surface 410b that connects between the connector coupling portion 411 and the voltage extraction port 414 is formed in an arc shape corresponding to the abutting surface 3a. The thickness of the connector 400 is thinner than the thickness of the storage case 410.

  Next, attachment of the connector 400 to the connector coupling portion 411 will be described.

  The handle 450 is picked and the terminal guide 402 is inserted from the opening of the connector coupling portion 411 and inserted into the voltage extraction port 414. The electrode clamping unit 460 clamps the electrodes 3 and 4 by allowing the connector 400 to enter the connector coupling unit 411 along the wall surface of the connector coupling unit 411. That is, the electrodes 3 and 4 slip between the terminal guide 402 and the voltage extraction terminal 420, and the electrodes 3 and 4 are sandwiched between the terminal guide 402 and the voltage extraction terminal 420 due to the elasticity of the voltage extraction terminal 420. As a result, the voltage extraction terminal 420 and the electrodes 3 and 4 are electrically connected, and the voltage can be detected. When the connector 400 is further advanced, the claw 422 is engaged with the hole 410a. The engagement between the claw 422 and the hole 410a prevents the connector 400 from being inadvertently dropped from the connector coupling portion 411. Further, the connector 400 is positioned with respect to the connector coupling portion 411 by the abutting surface 3a abutting against the positioning surface 410b. By positioning the connector 400, it is possible to prevent the terminal guide 402 from entering too much and damaging the electrodes 3 and 4.

  Since the fuse member 442 of the connector 400 is only inserted into the fuse member holding opening 406, it can be easily replaced when the fuse 440 is blown.

  As described above, the connector 400 of this embodiment can electrically connect the voltage extraction terminal 420 and the electrodes 3 and 4 simply by inserting the connector 400 into the connector coupling portion 411. Moreover, since the connector 400 of this embodiment is the structure which incorporated the fuse member 442, the flexible printed circuit which incorporated the fuse of another body can be abolished. Moreover, since the connector 400 of this embodiment is formed thinner than the thickness of the storage case 410, the thickness in the stacking direction does not increase even if the storage case 400 is stacked to form an assembled battery. Moreover, since the voltage extraction terminal 420 is covered with the insulating connector main body 401 and the storage case 400, it does not come into contact with other voltage extraction terminals 420 arranged in the stacking direction.

  The above-described embodiments may be combined in any way.

  In addition, in order to achieve the object of providing a terminal connection structure that can be easily mounted and that can reduce the thickness of the storage case, the terminal connection structure in one embodiment is provided on an electrode of an electrical device element stored in the case. In the terminal connection structure in which the extraction terminal is electrically connected, the extraction terminal protrudes from the main body portion on the front end side of the flat plate-shaped main body portion, the claw formed on the main body portion, and the claw. The case has an encircling part that encloses at least a part of the electrode and has an opening formed therein, and the nail is inserted into the opening from the tip end side into the opening. And the voltage extraction terminal is fixed in the surrounding portion, and the abutting portion abuts on the electrode to make electrical connection between the electrode and the abutting portion.

  The terminal connection structure of another embodiment can be fixed to the case and electrically connected to the electrode simply by inserting the extraction terminal into the case. For this reason, a fixing screw is not required, and when an assembled battery is formed, it is possible to reduce the size and to easily attach the electrode.

  Further, in the terminal connection structure of yet another embodiment, the extraction terminal is inserted into the opening while being elastically deformed so that the width of the extraction terminal including the portion where the claw is formed is wider than the width of the opening. Also good. In this case, when inserting the extraction terminal into the opening, it will be inserted while deforming the extraction terminal, but after the claw has passed through the opening part, the elasticity of the extraction terminal itself will return to its original shape and the nail will Engage. That is, in order to engage the claw with the case, it is not necessary to provide a movable part or the like, and the structure of the extraction terminal can be simplified.

  Further, in the terminal connection structure of yet another embodiment, the claw has elasticity and is formed so as to protrude in a direction opposite to the direction in which the abutting part is raised, and the bottom portion supporting the electrode is elastic. The hole for engagement with which the nail | claw which it has engages may be formed. Further, in the terminal connection structure of the present invention, the surrounding portion includes a lid portion having an engaging claw, a bottom portion that supports the electrode, and a side portion in which a hole that engages the opening and the engaging claw of the lid portion is formed. It may have. The cover part of the enclosure part engages the side part to receive the urging force of the extraction terminal that attempts to deform the electrode and prevent deformation of the electrode, and the electrode can be sandwiched between the cover part and the extraction terminal A reliable electrical connection can be achieved.

  Furthermore, in the terminal connection structure of yet another embodiment, the case may include an insulating portion that covers a portion extending from the opening among the extraction terminals in a state where the claws are engaged with the case. By adopting such a configuration, when a battery is stacked by forming an assembled battery, it is possible to prevent contact with other extraction terminals adjacent in the stacking direction. For this reason, since it is not necessary to provide a space between terminals in order to avoid contact, the assembled battery can be further reduced in size.

  The voltage detection structure of another embodiment is a voltage detection structure in which a voltage extraction terminal for detecting a voltage of an electric device element is electrically connected to an electrode of a chargeable / dischargeable electric device element housed in a case. A terminal guide for holding the voltage extraction terminal having elasticity, a fuse guide formed integrally with the terminal guide and detachably holding a fuse electrically connected to one end of the voltage extraction terminal, and a claw A surrounding portion in which a case surrounds at least a part of the electrode and an opening is formed. And a connector coupling portion that is connected to the opening and into which the connector can be inserted. By inserting the connector into the connector coupling portion, the terminal guide passes through the opening and the clamping portion clamps the electrode. With electrical connection between the electrode and the voltage lead terminal is made, pawl, characterized in that engages the casing voltage lead terminal is fixed to the enclosure.

  In another embodiment, the connector is provided with a fuse along with a voltage extraction terminal. For this reason, it is not necessary to separately provide a fuse outside, and a simple configuration can be achieved.

DESCRIPTION OF SYMBOLS 1 Film exterior battery 2 Power generation element 3 Electrode terminal for positive electrodes 4 Electrode terminal for negative electrodes 7 Laminate film 7a Heat-sealing part 10, 210, 310, 410 Storage case 11 Storage part 11 Claw 12 Connection part 13 Extraction part 14, 214, 314 414 Voltage outlet 14a, 214b, 314a Opening side wall 15, 215 Lid 16 Engaging hole 20, 320, 420 Voltage extracting terminal 21, 321 Abutting part 22b Engaging end 22, 322, 422 Claw 22a Wedge 25, 325 Body portion 26 Crimp portion 27 Tip portion 40 Lead wire 100 Battery assembly 215a Case engaging claw 220b Bottom wall 220 Insulating portion 310a, 410a Hole 400 Connector 401 Connector body 402a, 420a Tip portion 402b Groove 402 Terminal guide 403 Fuse member guide 404 Holding Groove 405 Opening 4 6 fuse member holding aperture 410b positioning surface 411 connector coupling portion 420b rear end portion 440 fuses 441 holding member 442 fuse member 450 gripping portion 460 electrode sandwiching section

Claims (5)

A plurality of film-clad batteries, and a storage case for storing the plurality of film-clad batteries,
Each of the plurality of film-clad batteries has an electrode extending from the film-clad battery,
The storage case includes a plurality of storage portions arranged in parallel and extending in a planar shape, and a connecting portion that connects adjacent storage portions of the plurality of storage portions,
Each of the plurality of film-clad batteries is stored in each of the plurality of storage units,
The electrodes of adjacent film-clad batteries among the plurality of film-clad batteries are connected and stored in the connection part,
The outer surface of the connecting part that is in a second direction that intersects a first direction in which a plurality of storage parts arranged in parallel are arranged and that extends along a plane in which the storage part extends. Is provided with a first opening for inserting a terminal electrically connected to the electrode of the film-clad battery along the second direction ,
The assembled battery , wherein the outer surface of the connecting portion where the first opening is formed is on the inner side of the outer surface of the storage portion in the second direction . The assembled battery according to claim 1, wherein a plurality of the storage cases are stacked. The assembled battery according to claim 2 , wherein the first openings are arranged in a line in a direction in which a plurality of the storage cases are stacked. The assembled battery according to any one of claims 1 to 3 , wherein a height of the terminal is lower than a height of the first opening. The terminal is assembled battery according to any one of claims 1 to 4 wherein said film is a terminal for detecting the voltage of the external battery.

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