POWER STORAGE MODULE

• Main Authors: HAGA NOBUYASU, HIROSE TAKAYUKI, NAKAMURA TOMOHIRO, OKUMURA MOTOYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 11.06.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a power storage module with improved reliability.SOLUTION: A power storage module comprises: a bipolar electrode unit 31 having a bipolar electrode 14 and a resin frame 21 welded to a periphery 15c of a first surface 15a of an electrode plate 15 in the bipolar electrode 14; and a negative terminal electrode unit 32 having a negative terminal electrode 18, a metal plate 20, a resin frame 22 welded to a periphery 15c of an electrode plate 15 in the negative terminal electrode 18 as well as to a periphery 20c of the metal plate 20, and a resin frame 23 welded to the periphery 20c on another surface 20b of the metal plate 20. An electrolyte containing an alkaline solution is housed in an internal space V defined by the electrode plate 15 of the bipolar electrode 14, the electrode plate 15 of the negative terminal electrode 18, and the resin frame 21 of the bipolar electrode unit 31. The electrode plate 15 of the negative terminal electrode 18 has rigidity higher than that of the electrode plate 15 of the bipolar electrode 14.SELECTED DRAWING: Figure 3 【課題】信頼性が向上された蓄電モジュールを提供する。【解決手段】バイポーラ電極１４、及びバイポーラ電極１４の電極板１５の第１の面１５ａにおける周縁部１５ｃに溶着された樹脂枠２１を有するバイポーラ電極ユニット３１と、負極終端電極１８、金属板２０、負極終端電極１８の電極板１５の周縁部１５ｃと金属板２０の周縁部２０ｃとに溶着される樹脂枠２２、及び金属板２０の他方の面２０ｂにおける周縁部２０ｃに溶着される樹脂枠２３を有する負極終端電極ユニット３２と、を備える。バイポーラ電極１４の電極板１５、負極終端電極１８の電極板１５、及びバイポーラ電極ユニット３１の樹脂枠２１によって形成された内部空間Ｖにはアルカリ溶液を含む電解液が収容され、負極終端電極１８の電極板１５の剛性は、バイポーラ電極１４の電極板１５の剛性よりも大きい。【選択図】図３