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|1. (WO2018123089) WOUND BATTERY|
|Applicants:||MAXELL HOLDINGS, LTD.
This wound battery comprises an electrode body, which is formed by winding together, in a stacked state, a cathode, an anode and a separator, each formed in a belt shape, wherein the anode contains a metal that alloys with Li. Without reduction in battery characteristics, this wound battery suppresses damage within the electrode body resulting from expansion of the anode. This wound battery 1 is provided with an electrode body 30 which is formed into a cylinder by winding a cathode 31, an anode 32 and a separator 33 in a stacked state, and a battery case 2 inside of which the electrode body 30 is sealed. The anode 32 has an anode electrode part 51 containing an element alloyable with Li, and an anode end part 52. The electrode body 30 has spacers 53 which are thicker than the cathode 31 and which are positioned at least partially between anode end parts 52 adjacent in the radial direction of the electrode body 30.