BATTERY

• Main Authors: NAGATANI KATSUHIKO, KIKUCHI KYOKO, OKAYAMA SHINOBU
• Format: Patent
• Language: English; Japanese
• Published: 10.05.2018
• 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 by which the corrosion of a battery case can be suppressed by suppressing the alloying of LiAl even in the event of a short circuit of a battery case and a negative electrode.SOLUTION: A battery of the present invention comprises: an electrode body 80 having a positive electrode 82 and a negative electrode 84; an electrolyte solution containing lithium ions; and an aluminum battery case 50 in which the electrode body 80 and the electrolyte solution are encased. The battery case 50 has an inner wall face including a bottom face 52A disposed under the electrode body 80 and a side face 52B standing upright from the bottom face 52A so as to surround the electrode body 80. The bottom face 52A and at least a part of the side face 52B, ranging from the bottom face 52A to a height h of a liquid level of a surplus electrolyte 90 are covered with a metal layer 10 made of a metal other than aluminum.SELECTED DRAWING: Figure 2 【課題】電池ケースと負極とが短絡した場合でもＬｉＡｌ合金化を抑えて電池ケースの腐食を抑制し得る電池を提供する。【解決手段】本発明の電池は、正極８２と負極８４とを有する電極体８０と、リチウムイオンを含む電解液と、電極体８０と電解液とを収容するアルミニウム製の電池ケース５０とを備える。電池ケース５０の内壁面は、電極体８０の下方に配置される底面５２Ａと、該底面５２Ａから電極体８０を囲むように立ち上がった側面５２Ｂとを有する。底面５２Ａと、側面５２Ｂのうちの底面５２Ａから少なくとも余剰電解液９０の液面の高さｈまでの部分とが、アルミニウム以外の金属からなる金属層１０で覆われている。【選択図】図２