POWER STORAGE ELEMENT

• Main Author: KAWATE KENJI
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• 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 element that can efficiently permeate an electrolytic solution injected from a liquid injection port provided in a container into an electrode body.SOLUTION: In a power storage element 10 including an electrode body 400 and a container 100 that accommodates the electrode body 400, an injection port 117 for injecting an electrolytic solution into a container is formed at a position of a lid plate 110 of the container 100 facing the tab portion 410 of the electrode body 400. The electrode body 400 includes a separator 470a and a positive electrode 450 and a negative electrode 460 laminated via the separator 470a. The edge of the separator 470a is bent at the end of the electrode body 400 other than the portion where the tab portion 410 is provided.SELECTED DRAWING: Figure 7 【課題】容器に設けられた注液口から注入された電解液を、効率よく電極体に浸透させることができる蓄電素子を提供すること。【解決手段】電極体４００と、電極体４００を収容する容器１００とを備える蓄電素子１０であって、容器１００の蓋板１１０の、電極体４００のタブ部４１０と対向する位置に、電解液を容器内に注入するための注液口１１７が形成されている。電極体４００は、セパレータ４７０ａと、セパレータ４７０ａを介して積層された正極４５０及び負極４６０とを有する。電極体４００の、タブ部４１０が設けられた部分以外の端部において、セパレータ４７０ａの端縁は折り曲げられている。【選択図】図７