POWER STORAGE MODULE

• Main Authors: SATO WATARU, TERAUCHI SHINOBU, MOGI YUYA
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a power storage module capable of reducing the stress of the restraining member of the storage cell while suppressing the over-design of restraint members.SOLUTION: The power storage module includes: stacked multiple storage cells; two end plates placed at both ends of multiple storage cells in the stacking direction; a constraint member that is connected to two end plates and restrains multiple storage cells in the stacking direction. The constraint member includes a first member positioned at the center side in the stacking direction and a second member that is positioned at the end side in the stacking direction and joined to the end face of the first member. The first member is formed thinner than the second member. The constraint member has a stepped portion and the stepped portion is in contact with each of the two end plates from the stacking direction.SELECTED DRAWING: Figure 4 【課題】蓄電セルの拘束部材の応力を緩和させ、かつ拘束部材の過剰設計を抑制可能な蓄電モジュールを提供する。【解決手段】蓄電モジュールは、積層された複数の蓄電セルと、複数の蓄電セルの積層方向の両端に配置された２つのエンドプレートと、２つのエンドプレートに接続され、複数の蓄電セルを積層方向に拘束する拘束部材とを備え、拘束部材は、積層方向の中央側に位置する第１部材と、積層方向の端部側に位置し、第１部材の端面に結合される第２部材とを含み、第１部材は、第２部材よりも薄く形成され、拘束部材は段差部を有し、段差部が積層方向から２つのエンドプレートに各々当接する。【選択図】図４