BATTERY

• Main Authors: AIZAWA TAKAHIRO, TANABE SHIGETOSHI, TOJO HIROSHI, ITO TAKASHI, UKITA YASUNARI
• Format: Patent
• Language: English; Japanese
• Published: 06.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a battery capable of increasing a space that a plurality of electrode groups in an internal cavity of an outer container occupy in a configuration where collector tabs of the plurality of electrode groups protrude toward a side on which a lid member is located.SOLUTION: A battery comprises an outer container 3, a lid member 5, a plurality of electrode groups 2A and 2B, first leads 23A, second leads 23B, and electrode terminals 21. The lid member 5 covers an opening of an internal cavity of the outer container 3. The plurality of electrode groups 2A and 2B are housed in the internal cavity of the outer container 3. In a first electrode group 2A, each first collector tab 17A protruding toward a side on which the lid member 5 is located is bonded with each first lead 23A. In a second electrode group 2B different from the first electrode group 2A, each second collector tab 17B protruding toward a side on which the lid member 5 is located is bonded with each second lead 23B different from the first lead 23A. Each electrode terminal 21 exposed on an outer surface of the lid member 5 is connected with the first lead 23A and the second lead 23B together.SELECTED DRAWING: Figure 2 【課題】蓋部材が位置する側へ複数の電極群の集電タブが突出する構成において、外装容器の内部空洞における複数の電極群が占めるスペースを大きくすることが可能な電池を提供する。【解決手段】実施形態の電池は、外装容器３、蓋部材５、複数の電極群２Ａ，２Ｂ、第１のリード２３Ａ、第２のリード２３Ｂ及び電極端子２１を備える。蓋部材５は、外装容器３の内部空洞の開口を塞ぎ、複数の電極群２Ａ，２Ｂは、外装容器３の内部空洞に収納される。第１の電極群２Ａにおいて蓋部材５が位置する側へ突出する第１の集電タブ１７Ａは、第１のリード２３Ａに接合され、第１の電極群２Ａとは別の第２の電極群２Ｂにおいて蓋部材５が位置する側へ突出する第２の集電タブ１７Ｂは、第１のリード２３Ａとは別体の第２のリード２３Ｂに接合される。蓋部材５の外表面おいて露出する電極端子２１には、第１のリード２３Ａ及び第２のリード２３Ｂが一緒に接続される。【選択図】図２