US 12,444,791 B2
Battery
Jiuling Xu, Changzhou (CN); Yongjie Zhang, Luoyang (CN); and Lulu Zhang, Changzhou (CN)
Assigned to CALB Co., Ltd., Jiangsu (CN)
Filed by CALB Co., Ltd., Jiangsu (CN)
Filed on Oct. 27, 2022, as Appl. No. 17/975,531.
Claims priority of application No. 202210749564.X (CN), filed on Jun. 28, 2022.
Prior Publication US 2023/0420772 A1, Dec. 28, 2023
Int. Cl. H01M 50/119 (2021.01); H01M 50/145 (2021.01); H01M 50/159 (2021.01)
CPC H01M 50/119 (2021.01) [H01M 50/145 (2021.01); H01M 50/159 (2021.01)] 7 Claims
OG exemplary drawing
 
1. A battery, comprising a first casing, wherein the first casing comprises:
a first metal piece; and
a second metal piece, wherein the second metal piece is disposed inside the first metal piece, such that the first metal piece forms an outer surface of the first casing, and that the second metal piece forms an inner surface of the first casing, and a material of the first metal piece is inconsistent with a material of the second metal piece,
wherein a corrosion potential of the second metal piece is higher than a corrosion potential of the first metal piece, and the corrosion potential of the second metal piece is higher than a negative electrode potential of the battery,
wherein the battery further comprises a second casing, the second casing is connected to the first casing, the second casing comprises a third metal piece, a material of the third metal casing is inconsistent with the material of the second metal piece, and the corrosion potential of the second metal piece is higher than a corrosion potential of the third metal piece,
wherein the material of the third metal piece is consistent with the material of the first metal piece, and the first metal piece is connected to the third metal piece,
wherein the second metal piece is insulated from the third metal piece.