POWER STORAGE ELEMENT AND POWER STORAGE MODULE

• Main Author: KAWATE KENJI
• Format: Patent
• Language: English; Japanese
• Published: 10.01.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a power storage element in which energy density can be increased.SOLUTION: A power storage element includes a rectangular parallelepiped case having a bottom wall and a top wall, a front wall and a rear wall having a smaller area than the top wall, and a pair of sidewalls having a larger area than the top wall, a laminated electrode body housed in the case, and having multiple tabular positive electrode plates and negative electrode plates laminated via separators, and positive electrode tabs and negative electrode tabs extending from the positive and negative electrode plates toward the front wall, and external terminals provided on the front wall, and connected electrically with the positive electrode tabs or the negative electrode tabs. The bottom wall is installed on the installation surface, and the front wall rises from the bottom wall.SELECTED DRAWING: Figure 2 【課題】本発明は、エネルギー密度を大きくできる蓄電素子を提供することを課題とする。【解決手段】蓄電素子は、底壁及び天壁と、それぞれ前記天壁より面積が小さい前壁及び後壁と、それぞれ前記天壁より面積が大きい一対の側壁とを有する、直方体形状のケースと、前記ケース内に収容され、セパレータを介して積層された板状の複数の正極板及び負極板、並びに前記正極板及び前記負極板から前記前壁に向けて延びる正極タブ及び負極タブを有する積層電極体と、前記前壁に設けられ、前記正極タブ又は前記負極タブと電気的に接続される外部端子とを備え、前記底壁が設置面に設置され、前記前壁が前記底壁から立ち上がる。【選択図】図２