POWER STORAGE MODULE

• Main Authors: TERASHIMA DAIKI, OUCHI MASANOBU, MINAGATA ATSUSHI, OKUMURA MOTOYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 02.09.2021
• 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 in which an internal space formed between bipolar electrodes adjacent to each other can be expanded.SOLUTION: A power storage module 1 includes a plurality of bipolar electrodes 11 laminated along a lamination direction, a plurality of separators 15 interposed between the bipolar electrodes 11 adjacent to each other, a sealing portion 20 that forms a space between the bipolar electrodes 11 adjacent to each other along the lamination direction and seals the space, and an electrolytic solution stored in the space. Each of the plurality of bipolar electrodes 11 includes an electrode plate 12 and electrode layers 13 provided on both surfaces of the electrode plate 12 in the lamination direction. The separator 15 has an overlapping portion 16 that overlaps the electrode layer 13, and an exposed portion 17 that does not overlap the electrode layer 13 when viewed from the lamination direction. The exposed portion 17 is provided with a thin-wall portion 18 having a thickness along the lamination direction which is smaller than that of the overlapping portion 16.SELECTED DRAWING: Figure 3 【課題】互いに隣り合うバイポーラ電極間に形成される内部空間を拡大することができる蓄電モジュールを提供する。【解決手段】蓄電モジュール１は、積層方向に沿って積層された複数のバイポーラ電極１１と、互いに隣り合うバイポーラ電極１１の間に介在する複数のセパレータ１５と、積層方向に沿って互いに隣り合うバイポーラ電極１１の間に空間をするとともに当該空間をg封止する封止部２０と、空間内に収容された電解液と、を備える。複数のバイポーラ電極１１の各々は、電極板１２と、積層方向における電極板１２の両面に設けられた電極層１３とを含む。セパレータ１５は、積層方向から見た場合に、電極層１３に重なる重畳部１６と、電極層１３に重ならない露出部１７とを有する。露出部１７には、積層方向に沿った厚さが重畳部１６よりも薄い薄肉部１８が設けられている。【選択図】図３