JP2015076369A - Battery pack - Google Patents

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JP2015076369A
JP2015076369A JP2013213705A JP2013213705A JP2015076369A JP 2015076369 A JP2015076369 A JP 2015076369A JP 2013213705 A JP2013213705 A JP 2013213705A JP 2013213705 A JP2013213705 A JP 2013213705A JP 2015076369 A JP2015076369 A JP 2015076369A
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battery
predetermined direction
battery cell
case
electrode plate
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洋志 出村
Hiroshi Demura
洋志 出村
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Toyota Motor Corp
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Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

PROBLEM TO BE SOLVED: To quickly and easily perform electrical discharge of battery cells in a battery pack in which a plurality of battery cells are aligned in a predetermined direction and stored in a case.SOLUTION: Since a fragile part of a battery cell is gradually increased in accordance with separation from an insertion hole 20 of a battery case 10, a short-circuit discharging pin 30 can be more surely pierced into the fragile part of the battery cell even when the battery cell is arranged far from the insertion hole 20. Therefore, resistance to be generated when piercing the pin 30 into battery cells 12-1 to 12-3 can be reduced and short-circuit discharge of the battery cells 12-1 to 12-3 can be easily performed.

Description

本発明は、複数の電池セルが所定方向に並べられてケース内に収納された電池パックに関し、特に、電池セルの放電を行うための構造に関する。   The present invention relates to a battery pack in which a plurality of battery cells are arranged in a predetermined direction and stored in a case, and more particularly to a structure for discharging battery cells.

下記特許文献１には、廃棄スイッチを押すと電池セルと電極間が切断される電池パック構造が開示されている。また、下記特許文献２には、電池の釘刺しが行われた場合に短絡時の放電を抑制するための導電性基体構造が開示されている。   Patent Document 1 below discloses a battery pack structure in which a battery cell and an electrode are disconnected when a discard switch is pressed. Patent Document 2 below discloses a conductive substrate structure for suppressing discharge at the time of short-circuiting when battery nail penetration is performed.

特開平１１−２８３５９２号公報Japanese Patent Application Laid-Open No. 11-283592 特開平１０−１９９５７４号公報JP-A-10-199574

使用済みの電池パックについては、リサイクル等のために電池セルの放電を行う必要があるが、その際には、電池セルの放電を短時間で容易に行えることが望ましい。特許文献１では、使用済みの電池パックについて、廃棄スイッチを押すと電池セルと電極間が切断されるようにしているが、電池セルの放電を短時間で容易に行うことについては考慮されていない。   About a used battery pack, it is necessary to discharge a battery cell for recycling etc., In that case, it is desirable to be able to discharge a battery cell easily in a short time. In Patent Literature 1, when a disposal switch is pressed for a used battery pack, the battery cell and the electrode are disconnected. However, it is not considered to easily discharge the battery cell in a short time. .

本発明は、複数の電池セルが所定方向に並べられてケース内に収納された電池パックにおいて、電池セルの放電を短時間で容易に行うことを目的とする。   An object of the present invention is to easily discharge a battery cell in a short time in a battery pack in which a plurality of battery cells are arranged in a predetermined direction and stored in a case.

本発明に係る電池パックは、上述した目的を達成するために以下の手段を採った。   The battery pack according to the present invention employs the following means in order to achieve the above-described object.

本発明に係る電池パックは、複数の電池セルが所定方向に並べられてケース内に収納された電池パックであって、各電池セルは、電槽及び極板を有し、前記所定方向において隣接する電池セルの電槽及び極板同士が互いに対向配置され、各電池セルの電槽及び極板には、脆弱部が前記所定方向に沿って並ぶように設けられ、ケースには、穴が各電池セルの脆弱部と前記所定方向に沿って並ぶように設けられ、ケースの穴から遠い電池セルほど、脆弱部が大きいことを要旨とする。   The battery pack according to the present invention is a battery pack in which a plurality of battery cells are arranged in a predetermined direction and stored in a case, and each battery cell has a battery case and an electrode plate, and is adjacent in the predetermined direction. The battery case and the electrode plate of the battery cell are arranged to face each other, the battery case and the electrode plate of each battery cell are provided so that the fragile portions are arranged along the predetermined direction, and the case has holes. The gist is that the weaker portion of the battery cell is larger as the battery cell is arranged so as to be aligned with the weakened portion of the battery cell along the predetermined direction.

本発明によれば、短絡放電用の部材を穴からケース内に挿入して電池セルの短絡放電を行う場合に、短絡放電用の部材を電池セルに突き刺しやすくなり、電池セルの短絡放電を短時間で容易に行うことができる。   According to the present invention, when a short-circuit discharge member is inserted into the case from the hole to perform short-circuit discharge of the battery cell, the short-circuit discharge member is easily pierced into the battery cell, and the short-circuit discharge of the battery cell is shortened. Can be done easily in time.

本発明の実施形態に係る電池パックの内部構成を示す図である。It is a figure which shows the internal structure of the battery pack which concerns on embodiment of this invention. 電池セルに設ける脆弱部の一例を示す図である。It is a figure which shows an example of the weak part provided in a battery cell.

以下、本発明を実施するための形態（以下実施形態という）を図面に従って説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

図１は、本発明の実施形態に係る電池パックの内部構成を示す図である。本実施形態に係る電池パックにおいては、複数（図１の例では３つ）の電池セル１２−１〜１２−３が所定方向（図１の左右方向）に並べられて電池ケース１０内に収納されている。図１の例では、電池ケース１０内には、複数（図１の例では３つ）の枠体１４−１〜１４−３が所定方向に並んで設けられ、電池セル１２−１〜１２−３が枠体１４−１〜１４−３内にそれぞれ収納されている。所定方向の一端側から他端側（図１の左側から右側）にかけて、電池セル１２−１（枠体１４−１）、電池セル１２−２（枠体１４−２）、電池セル１２−３（枠体１４−３）の順に配置されている。電池ケース１０の所定方向一端側の壁板１０ａと枠体１４−１との間には電池拘束部１５−１が設けられ、電池ケース１０の所定方向他端側の壁板１０ｂと枠体１４−３との間には電池拘束部１５−２が設けられている。   FIG. 1 is a diagram showing an internal configuration of a battery pack according to an embodiment of the present invention. In the battery pack according to the present embodiment, a plurality (three in the example of FIG. 1) of battery cells 12-1 to 12-3 are arranged in a predetermined direction (left-right direction of FIG. 1) and stored in the battery case 10. Has been. In the example of FIG. 1, a plurality of (three in the example of FIG. 1) frame bodies 14-1 to 14-3 are provided in a predetermined direction in the battery case 10, and battery cells 12-1 to 12-are provided. 3 are accommodated in the frames 14-1 to 14-3, respectively. The battery cell 12-1 (frame body 14-1), battery cell 12-2 (frame body 14-2), battery cell 12-3 from one end side to the other end side in the predetermined direction (from the left side to the right side in FIG. 1) (Frame body 14-3) are arranged in this order. A battery restraint portion 15-1 is provided between the wall plate 10 a on one end side in the predetermined direction of the battery case 10 and the frame body 14-1, and the wall plate 10 b on the other end side in the predetermined direction of the battery case 10 and the frame body 14. -3 is provided with a battery restraint portion 15-2.

電池セル１２−１においては、電槽１６−１内に極板群１８−１が収納されている。同様に、電池セル１２−２（１２−３）においても、電槽１６−２（１６−３）内に極板群１８−２（１８−３）が収納されている。各極板群１８−１〜１８−３については、正極板と負極板との間にセパレータが挟まれたものを所定方向に複数積み重ねて構成される。所定方向に隣接する電池セル１２−１，１２−２において、電槽１６−１及び極板群１８−１が電槽１６−２及び極板群１８−２と所定方向に対向配置され、所定方向に隣接する電池セル１２−２，１２−３において、電槽１６−２及び極板群１８−２が電槽１６−３及び極板群１８−３と所定方向に対向配置されている。   In the battery cell 12-1, the electrode plate group 18-1 is accommodated in the battery case 16-1. Similarly, in the battery cell 12-2 (12-3), the electrode plate group 18-2 (18-3) is accommodated in the battery case 16-2 (16-3). Each of the electrode plate groups 18-1 to 18-3 is configured by stacking a plurality of separators sandwiched between a positive electrode plate and a negative electrode plate in a predetermined direction. In the battery cells 12-1 and 12-2 adjacent to each other in a predetermined direction, the battery case 16-1 and the electrode plate group 18-1 are disposed to face the battery case 16-2 and the electrode plate group 18-2 in a predetermined direction. In the battery cells 12-2 and 12-3 adjacent to each other in the direction, the battery case 16-2 and the electrode plate group 18-2 are disposed to face the battery case 16-3 and the electrode plate group 18-3 in a predetermined direction.

電池セル１２−１の電槽１６−１には、他の部分に比べて剛性・強度の低い脆弱部２２−１ａ，２２−１ｂが設けられている。同様に、電池セル１２−２の電槽１６−２にも、他の部分に比べて剛性・強度の低い脆弱部２２−２ａ，２２−２ｂが設けられ、電池セル１２−３の電槽１６−３にも、他の部分に比べて剛性・強度の低い脆弱部２２−３ａ，２２−３ｂが設けられている。各脆弱部２２−１ａ，２２−１ｂ，２２−２ａ，２２−２ｂ，２２−３ａ，２２−３ｂについては、例えば切れ目が設けられることで他の部分に比べて厚さの薄い薄肉部により構成することが可能である（図２に脆弱部２２−１ａの一例を示す）。電池セル１２−１においては、脆弱部２２−１ａが脆弱部２２−１ｂより所定方向一端側に配置され、電池セル１２−２においては、脆弱部２２−２ａが脆弱部２２−２ｂより所定方向一端側に配置され、電池セル１２−３においては、脆弱部２２−３ａが脆弱部２２−３ｂより所定方向一端側に配置されている。   The battery case 16-1 of the battery cell 12-1 is provided with weak portions 22-1a and 22-1b having lower rigidity and strength than other portions. Similarly, the battery case 12-2 of the battery cell 12-2 is also provided with weak parts 22-2a and 22-2b having lower rigidity and strength than the other parts, and the battery case 16 of the battery cell 12-3. -3 is also provided with weak portions 22-3a and 22-3b having lower rigidity and strength than other portions. About each weak part 22-1a, 22-1b, 22-2a, 22-2b, 22-3a, 22-3b, it is comprised by the thin part thin with a thickness compared with another part, for example by providing a cut | interruption. (An example of the weak part 22-1a is shown in FIG. 2). In the battery cell 12-1, the fragile part 22-1a is arranged at one end in the predetermined direction from the fragile part 22-1b, and in the battery cell 12-2, the fragile part 22-2a is arranged in the predetermined direction from the fragile part 22-2b. It arrange | positions at one end side, and in the battery cell 12-3, the weak part 22-3a is arrange | positioned in the predetermined direction one end side from the weak part 22-3b.

さらに、電池セル１２−１の極板群１８−１にも、他の部分に比べて剛性・強度の低い脆弱部が設けられている。同様に、電池セル１２−２の極板群１８−２にも、他の部分に比べて剛性・強度の低い脆弱部が設けられ、電池セル１２−３の極板群１８−３にも、他の部分に比べて剛性・強度の低い脆弱部が設けられている。各極板群１８−１〜１８−３の脆弱部についても、例えば他の部分に比べて厚さの薄い薄肉部により構成することが可能である。電槽１６−１〜１６−３の脆弱部２２−１ａ，２２−１ｂ，２２−２ａ，２２−２ｂ，２２−３ａ，２２−３ｂ、及び極板群１８−１〜１８−３の脆弱部は、所定方向に沿って並ぶように一直線上に配置されている。   Further, the electrode plate group 18-1 of the battery cell 12-1 is also provided with a fragile portion having lower rigidity and strength than other portions. Likewise, the electrode plate group 18-2 of the battery cell 12-2 is also provided with a weakened portion having lower rigidity and strength than the other parts, and the electrode plate group 18-3 of the battery cell 12-3 also has A fragile portion having lower rigidity and strength than other portions is provided. The weakened portions of each of the electrode plate groups 18-1 to 18-3 can also be configured by thin portions that are thinner than other portions, for example. Vulnerable portions 22-1a, 22-1b, 22-2a, 22-2b, 22-3a, 22-3b of battery cases 16-1 to 16-3, and vulnerable portions of electrode plate groups 18-1 to 18-3 Are arranged in a straight line so as to be aligned along a predetermined direction.

枠体１４−１の所定方向一端側の壁板１４−１ａには、貫通穴２４−１ａが脆弱部２２−１ａと所定方向に対向して形成され、枠体１４−１の所定方向他端側の壁板１４−１ｂには、貫通穴２４−１ｂが脆弱部２２−１ｂと所定方向に対向して形成されている。同様に、枠体１４−２の所定方向一端側の壁板１４−２ａには、貫通穴２４−２ａが脆弱部２２−２ａと所定方向に対向して形成され、枠体１４−２の所定方向他端側の壁板１４−２ｂには、貫通穴２４−２ｂが脆弱部２２−２ｂと所定方向に対向して形成され、枠体１４−３の所定方向一端側の壁板１４−３ａには、貫通穴２４−３ａが脆弱部２２−３ａと所定方向に対向して形成され、枠体１４−３の所定方向他端側の壁板１４−３ｂには、貫通穴２４−３ｂが脆弱部２２−３ｂと所定方向に対向して形成されている。さらに、電池ケース１０の所定方向一端側の壁板１０ａには、挿入穴２０が貫通穴２４−１ａ及び脆弱部２２−１ａと所定方向に対向して形成されている。挿入穴２０及び貫通穴２４−１ａ，２４−１ｂ，２４−２ａ，２４−２ｂ，２４−３ａ，２４−３ｂは、電槽１６−１〜１６−３の脆弱部２２−１ａ，２２−１ｂ，２２−２ａ，２２−２ｂ，２２−３ａ，２２−３ｂ、及び極板群１８−１〜１８−３の脆弱部に対して、所定方向に沿って一直線上に並ぶように設けられている。図１の例では、挿入穴２０、貫通穴２４−１ａ，２４−１ｂ，２４−２ａ，２４−２ｂ，２４−３ａ，２４−３ｂ、電槽１６−１〜１６−３の脆弱部２２−１ａ，２２−１ｂ，２２−２ａ，２２−２ｂ，２２−３ａ，２２−３ｂ、及び極板群１８−１〜１８−３の脆弱部が、所定方向と垂直方向（図１の上下方向）において中央位置に配置されている。   A through hole 24-1a is formed in the wall plate 14-1a on one end side in the predetermined direction of the frame body 14-1 so as to face the fragile portion 22-1a in the predetermined direction, and the other end in the predetermined direction of the frame body 14-1. A through hole 24-1b is formed in the side wall plate 14-1b so as to face the weakened portion 22-1b in a predetermined direction. Similarly, a through hole 24-2a is formed in the wall plate 14-2a on one end side in the predetermined direction of the frame body 14-2 so as to face the fragile portion 22-2a in a predetermined direction. A through hole 24-2b is formed in the wall plate 14-2b on the other end side in the direction so as to face the weakened portion 22-2b in a predetermined direction, and the wall plate 14-3a on the one end side in the predetermined direction of the frame 14-3. The through hole 24-3a is formed to face the fragile portion 22-3a in a predetermined direction, and the wall plate 14-3b on the other end side in the predetermined direction of the frame 14-3 has a through hole 24-3b. It is formed to face the fragile portion 22-3b in a predetermined direction. Further, the insertion hole 20 is formed in the wall plate 10a on one end side in the predetermined direction of the battery case 10 so as to face the through hole 24-1a and the fragile portion 22-1a in the predetermined direction. The insertion hole 20 and the through holes 24-1a, 24-1b, 24-2a, 24-2b, 24-3a, 24-3b are weak portions 22-1a, 22-1b of the battery cases 16-1 to 16-3. , 22-2a, 22-2b, 22-3a, 22-3b, and the weakened portions of the electrode plate groups 18-1 to 18-3 are arranged in a straight line along a predetermined direction. . In the example of FIG. 1, the insertion hole 20, the through holes 24-1a, 24-1b, 24-2a, 24-2b, 24-3a, 24-3b, the weakened part 22- of the battery case 16-1 to 16-3. 1a, 22-1b, 22-2a, 22-2b, 22-3a, 22-3b, and weak portions of the electrode plate groups 18-1 to 18-3 are perpendicular to a predetermined direction (up and down direction in FIG. 1). In FIG.

本実施形態では、電池ケース１０（壁板１０ａ）の挿入穴２０から遠い電池セルほど、脆弱部が大きい。つまり、電池セル１２−３における電槽１６−３の脆弱部２２−３ａ，２２−３ｂ及び極板群１８−３の脆弱部の径が、電池セル１２−２における電槽１６−２の脆弱部２２−２ａ，２２−２ｂ及び極板群１８−２の脆弱部の径より大きい。そして、電池セル１２−２における電槽１６−２の脆弱部２２−２ａ，２２−２ｂ及び極板群１８−２の脆弱部の径が、電池セル１２−１における電槽１６−１の脆弱部２２−１ａ，２２−１ｂ及び極板群１８−１の脆弱部の径より大きい。さらに、電池ケース１０の挿入穴２０から遠い枠体ほど、貫通穴径が大きい。つまり、枠体１４−３の貫通穴２４−３ａ，２４−３ｂの径が枠体１４−２の貫通穴２４−２ａ，２４−２ｂの径より大きく、枠体１４−２の貫通穴２４−２ａ，２４−２ｂの径が枠体１４−１の貫通穴２４−１ａ，２４−１ｂの径より大きい。   In this embodiment, the fragile portion is larger as the battery cell is farther from the insertion hole 20 of the battery case 10 (wall plate 10a). That is, the diameters of the fragile portions 22-3a and 22-3b of the battery case 16-3 in the battery cell 12-3 and the fragile portions of the electrode plate group 18-3 are weak in the battery case 12-2 in the battery cell 12-2. It is larger than the diameter of the weak part of the parts 22-2a and 22-2b and the electrode plate group 18-2. And the diameter of the weak part 22-2a, 22-2b of the battery case 16-2 in the battery cell 12-2 and the weak part of the electrode group 18-2 is weak in the battery case 12-1 in the battery cell 12-1. It is larger than the diameter of the weak part of the parts 22-1a and 22-1b and the electrode plate group 18-1. Furthermore, the diameter of the through hole is larger as the frame body is farther from the insertion hole 20 of the battery case 10. That is, the diameters of the through holes 24-3a and 24-3b of the frame body 14-3 are larger than the diameters of the through holes 24-2a and 24-2b of the frame body 14-2, and the through holes 24- The diameters of 2a and 24-2b are larger than the diameters of the through holes 24-1a and 24-1b of the frame body 14-1.

なお、電池セル１２−１において、脆弱部２２−１ｂの径を脆弱部２２−１ａの径より大きくする等、挿入穴２０から遠くなるに従って脆弱部を大きくすることも可能である。同様に、電池セル１２−２において、脆弱部２２−２ｂの径を脆弱部２２−２ａの径より大きくし、電池セル１２−３において、脆弱部２２−３ｂの径を脆弱部２２−３ａの径より大きくする等、挿入穴２０から遠くなるに従って脆弱部を大きくすることも可能である。そして、枠体１４−１において、貫通穴２４−１ｂの径を貫通穴２４−１ａの径より大きくし、枠体１４−２において、貫通穴２４−２ｂの径を貫通穴２４−２ａの径より大きくし、枠体１４−３において、貫通穴２４−３ｂの径を貫通穴２４−３ａの径より大きくすることも可能である。   In the battery cell 12-1, the fragile portion can be enlarged as the distance from the insertion hole 20 is increased, for example, the diameter of the fragile portion 22-1b is larger than the diameter of the fragile portion 22-1a. Similarly, in the battery cell 12-2, the diameter of the fragile part 22-2b is made larger than the diameter of the fragile part 22-2a, and in the battery cell 12-3, the diameter of the fragile part 22-3b is made larger than that of the fragile part 22-3a. It is also possible to enlarge the fragile portion as the distance from the insertion hole 20 increases, such as increasing the diameter. In the frame 14-1, the diameter of the through hole 24-1b is larger than the diameter of the through hole 24-1a. In the frame 14-2, the diameter of the through hole 24-2b is changed to the diameter of the through hole 24-2a. In the frame 14-3, the diameter of the through hole 24-3b can be made larger than the diameter of the through hole 24-3a.

寿命等で使用できなくなった電池パックについては、リサイクルするために、電池セル１２−１〜１２−３の放電を行う必要がある。本実施形態では、電池セル１２−１〜１２−３の放電を行う際には、図１の矢印に示すように、短絡放電用の棒状金属部材である釘３０を挿入穴２０から電池ケース１０内に挿入する。電池ケース１０内の電池セル１２−１〜１２−３は、電池ケース１０内に挿入された釘３０によって突き刺されることで短絡し、強制的に放電が行われる。その際には、電池セルの脆弱部が挿入穴２０から遠くなるに従って大きくなることで、挿入穴２０から遠い電池セル（例えば電池セル１２−３）であっても、釘３０をより確実に脆弱部（例えば脆弱部２２−３ａ，２２−３ｂ）に突き刺すことができるので、釘３０を電池セル１２−１〜１２−３に突き刺す際の抵抗を低減することができる。さらに、枠体の貫通穴が挿入穴２０から遠くなるに従って大きくなることによっても、釘３０の挿入抵抗を低減することができる。したがって、本実施形態によれば、釘３０を電池セル１２−１〜１２−３に突き刺しやすくなり、電池セル１２−１〜１２−３の短絡放電を容易に行うことができる。その結果、電池セル１２−１〜１２−３の放電を短時間で行うことができ、電池パックのリサイクル性を向上させることができる。さらに、本実施形態では、電槽１６−１〜１６−３の脆弱部２２−１ａ，２２−１ｂ，２２−２ａ，２２−２ｂ，２２−３ａ，２２−３ｂ、及び極板群１８−１〜１８−３の脆弱部を、所定方向と垂直方向において中央位置に配置することで、極板群１８−１〜１８−３の電荷をより短時間で放電することができる。   For battery packs that can no longer be used due to their lifetime, etc., it is necessary to discharge the battery cells 12-1 to 12-3 in order to recycle them. In this embodiment, when discharging the battery cells 12-1 to 12-3, as shown by the arrows in FIG. 1, the nail 30, which is a bar-shaped metal member for short-circuit discharge, is inserted from the insertion hole 20 into the battery case 10. Insert inside. The battery cells 12-1 to 12-3 in the battery case 10 are short-circuited by being pierced by the nail 30 inserted in the battery case 10 and are forcibly discharged. In that case, the fragile portion of the battery cell becomes larger as the distance from the insertion hole 20 increases, so that the nail 30 can be more reliably fragile even in a battery cell (for example, the battery cell 12-3) far from the insertion hole 20. Since it can pierce a part (for example, weak part 22-3a, 22-3b), the resistance at the time of piercing the nail 30 to the battery cells 12-1 to 12-3 can be reduced. Furthermore, the insertion resistance of the nail 30 can also be reduced by increasing the through hole of the frame body as the distance from the insertion hole 20 increases. Therefore, according to this embodiment, the nail 30 can be easily pierced into the battery cells 12-1 to 12-3, and the short-circuit discharge of the battery cells 12-1 to 12-3 can be easily performed. As a result, the battery cells 12-1 to 12-3 can be discharged in a short time, and the recyclability of the battery pack can be improved. Furthermore, in this embodiment, the weak parts 22-1a, 22-1b, 22-2a, 22-2b, 22-3a, 22-3b of the battery cases 16-1 to 16-3, and the electrode plate group 18-1. By arranging the fragile portions of ˜18-3 at the central position in the direction perpendicular to the predetermined direction, the charges of the electrode plate groups 18-1 to 18-3 can be discharged in a shorter time.

なお、枠体１４−１，１４−２，１４−３には、貫通穴２４−１ａ，２４−１ｂ，２４−２ａ，２４−２ｂ，２４−３ａ，２４−３ｂに代えて、他の部分に比べて剛性・強度の低い脆弱部を設けることも可能である。その場合は、電池ケース１０の挿入穴２０から遠い枠体ほど、脆弱部を大きくすることが好ましい。   In addition, it replaces with the through-holes 24-1a, 24-1b, 24-2a, 24-2b, 24-3a, 24-3b in frame 14-1, 14-2, 14-3, and other parts. It is also possible to provide a fragile portion with lower rigidity and strength than In that case, it is preferable to enlarge the weakened portion as the frame body is farther from the insertion hole 20 of the battery case 10.

以上、本発明を実施するための形態について説明したが、本発明はこうした実施形態に何等限定されるものではなく、本発明の要旨を逸脱しない範囲内において、種々なる形態で実施し得ることは勿論である。   As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to such embodiment at all, and it can implement with a various form in the range which does not deviate from the summary of this invention. Of course.

１０ 電池ケース、１２−１〜１２−３ 電池セル、１４−１〜１４−３ 枠体、１５−１，１５−２ 電池拘束部、１６−１〜１６−３ 電槽、１８−１〜１８−３ 極板群、２０ 挿入穴、２２−１ａ，２２−１ｂ，２２−２ａ，２２−２ｂ，２２−３ａ，２２−３ｂ 脆弱部、２４−１ａ，２４−１ｂ，２４−２ａ，２４−２ｂ，２４−３ａ，２４−３ｂ 貫通穴、３０ 釘。   10 battery case, 12-1 to 12-3 battery cell, 14-1 to 14-3 frame, 15-1, 15-2 battery restraint part, 16-1 to 16-3 battery case, 18-1 to 18 -3 electrode plate group, 20 insertion hole, 22-1a, 22-1b, 22-2a, 22-2b, 22-3a, 22-3b weak part, 24-1a, 24-1b, 24-2a, 24- 2b, 24-3a, 24-3b Through hole, 30 nails.

Claims (1)

複数の電池セルが所定方向に並べられてケース内に収納された電池パックであって、
各電池セルは、電槽及び極板を有し、
前記所定方向において隣接する電池セルの電槽及び極板同士が互いに対向配置され、
各電池セルの電槽及び極板には、脆弱部が前記所定方向に沿って並ぶように設けられ、
ケースには、穴が各電池セルの脆弱部と前記所定方向に沿って並ぶように設けられ、
ケースの穴から遠い電池セルほど、脆弱部が大きい、電池パック。 A battery pack in which a plurality of battery cells are arranged in a predetermined direction and stored in a case,
Each battery cell has a battery case and an electrode plate,
The battery case and the electrode plates of the battery cells adjacent in the predetermined direction are arranged to face each other.
The battery case and the electrode plate of each battery cell are provided so that the weakened portions are arranged along the predetermined direction,
The case is provided with holes arranged along the predetermined direction with the weakened portion of each battery cell,
A battery pack with a weaker portion as the battery cell is farther from the hole in the case.
JP2013213705A 2013-10-11 2013-10-11 Battery pack Pending JP2015076369A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020136253A (en) * 2019-02-26 2020-08-31 パナソニックＩｐマネジメント株式会社 Battery module and battery unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020136253A (en) * 2019-02-26 2020-08-31 パナソニックＩｐマネジメント株式会社 Battery module and battery unit
WO2020175019A1 (en) * 2019-02-26 2020-09-03 パナソニックＩｐマネジメント株式会社 Battery module and battery unit
JP7236653B2 (en) 2019-02-26 2023-03-10 パナソニックＩｐマネジメント株式会社 battery unit

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