ELECTRODE GROUP, STORAGE BATTERY, BATTERY PACK, AND MOTOR CAR

• Main Authors: MURAMATSU MASANORI, TAKEBE TOMONORI
• Format: Patent
• Language: English; Japanese
• Published: 21.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide an electrode group that can prevent deviation of a positive electrode, a storage battery, a battery pack, and a motor car.SOLUTION: An electrode group 3 comprises a positive electrode 10, a separator 13, and a negative electrode 12. The positive electrode 10 has a cylindrical body 15 that accommodates a collector 14 and a positive electrode material 16. The separator 13 has a base part 31 and projections 32 that are provided on the base part 31 and project from a first principal surface 31a in a thickness direction of the separator 13. The projections 32 are arranged at a predetermined interval in a third direction Z. The projections 32 include a plurality of ribs 33. The plurality of ribs 33 are arranged at a predetermined interval in a second direction Y. The cylindrical body 15 of the positive electrode 10 and at least part of the plurality of ribs 33 are in contact with each other.SELECTED DRAWING: Figure 7 【課題】正極のずれを抑制できる電極群、蓄電池、組電池及び電動車を提供する。【解決手段】電極群３は、正極１０、セパレータ１３及び負極１２を備える。正極１０は、集電体１４及び正極材１６を収容する筒状体１５を有する。セパレータ１３は、ベース部３１と、ベース部３１に設けられ、セパレータ１３の厚さ方向において第１主面３１ａから突出する突出部３２と、を有する。突出部３２は、第３方向Ｚにおいて所定の間隔をあけて配置される。突出部３２は、複数のリブ３３を含む。複数のリブ３３は、第２方向Ｙにおいて所定の間隔をあけて配置される。正極１０の筒状体１５と複数のリブ３３のうちの少なくとも一部とが接触する。【選択図】図７