BATTERY PACK

• Main Authors: SUGIYAMA HIDEYUKI, SAWANISHI KEISUKE
• Format: Patent
• Language: English; Japanese
• Published: 19.12.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide battery pack to be miniaturized.SOLUTION: A battery pack 35 comprises a plurality of sealed batteries 30a to 30f. Each sealed battery comprises: a power generation element containing a positive electrode sheet, a negative electrode sheet, and a separator; a laminate film provided so as to nip the power generation element; a positive electrode connection terminal connecting the positive electrode sheet; a negative electrode connection terminal connected to the negative electrode sheet; and an electrolyte. The positive electrode connection terminal includes a positive electrode outer connection part 21a which is not coated with the laminate film; and a positive electrode conductive part provided between the positive electrode outer connection part and the power generation element and covered with the lamination film. The negative electrode connection terminal includes: a negative electrode outer connection part 21b which is not coated with the lamination film; and a negative electrode conductive part which is coated with the lamination film and provided between the negative electrode outer connection part and the power generation element. The positive electrode outer connection part or the negative electrode outer connection part of one sealed battery of the adjacent two sealed batteries connects to the positive electrode outer connection part or the negative electrode outer connection part of the other sealed battery.SELECTED DRAWING: Figure 8 【課題】小型化された組電池を提供する。【解決手段】組電池３５は、複数の密閉型電池３０ａ〜３０ｆを備える。各密閉型電池は、正極シート、負極シート及びセパレータを含む発電要素と、発電要素を挟むように設けられたラミネートフィルムと、正極シートに接続する正極接続端子と、負極シートに接続する負極接続端子と、電解質とを備え、正極接続端子は、ラミネートフィルムに覆われていない正極外部接続部２１ａと、正極外部接続部と発電要素との間に設けられラミネートフィルムに覆われている正極導電部とを有し、負極接続端子は、ラミネートフィルムに覆われていない負極外部接続部２１ｂと、負極外部接続部と発電要素との間に設けられラミネートフィルムに覆われている負極導電部とを有し、隣接する２つの密閉型電池のうち一方の密閉型電池の正極外部接続部又は負極外部接続部が、他方の密閉型電池の正極外部接続部又は負極外部接続部と接続する。【選択図】図８