BATTERY PACK

• Main Author: KIKUCHI KYOKO
• Format: Patent
• Language: English; Japanese
• Published: 12.04.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a battery pack that, when charge and discharge are repeated at a high current value, inhibits discharge of electrolyte outside an electrode body in each of electric cells, and is able to maintain a high rate characteristic.SOLUTION: A battery pack 10 disclosed here comprises a plurality of electric cells 20 in which an electrode body and electrolyte are accommodated in a battery case 50, and respective electrode terminals 60, 62 of the electric cells 20 are connected in series. The electric cells 20 are arrayed in a predetermined direction such that the respective side walls 20a of the plurality of electric cells 20 are opposite each other, and each of the plurality of electric cells 20 is confined in the direction y of the array. When each of the electric cells 20 is arranged such that the electrode terminals 60, 62 face upward, each electric cell 20 is confined such that a face pressure on a lower-side area B of a side wall 20a of the electric cell 20 is lower than face pressure on an upper side area A of the side wall 20a of the electric cell 20.SELECTED DRAWING: Figure 2 【課題】高い電流値で充放電を繰り返した場合に、各々の単電池において電解液が電極体外部に排出されることを抑制し、高いハイレート特性を維持することができる組電池を提供する。【解決手段】ここで開示される組電池１０は、電極体と電解液とが電池ケース５０に収容された単電池２０を複数備えており、該単電池２０の各々の電極端子６０、６２同士が直列に接続されている。そして、複数の単電池２０の各々の側壁２０ａ同士が対向するように該単電池２０が所定の方向に沿って配列され、該配列方向ｙに沿って複数の単電池２０の各々が拘束されており、電極端子６０、６２を上方に向けて単電池２０の各々を配置したとき、単電池２０の側壁２０ａの下側の領域Ｂに掛かる面圧が、単電池２０の側壁２０ａの上側の領域Ａに掛かる面圧よりも小さくなるように複数の単電池２０の各々が拘束されている。【選択図】図２