CPC H01G 11/80 (2013.01) [H01G 11/18 (2013.01); H01G 11/74 (2013.01); H01G 11/82 (2013.01)] | 10 Claims |
1. An electrochemical energy storage device, comprising:
a cover plate (4), comprising a lead-out bar (41) and a fixing plate (42), wherein the lead-out bar (41) is a conductor, the fixing plate (42) is an insulator, and the lead-out bar (41) vertically passes through the fixing plate (42) and is fixed thereon;
a housing (9), which is cylindrical and is provided with an opening at at least one end, wherein the insulating fixing plate (42) and the opening of the housing (9) are connected in a sealed manner by means of a sealing ring (2); and
a rolled core (7), provided in an inner cavity of the housing (9), wherein the rolled core (7) is conductively connected to the lead-out bar (41) by means of an upper connecting piece (6), and is conductively connected to another lead-out end of the housing (9) by means of a lower connecting piece (8); and characterized in that it further comprises:
a welding ring (1), conductively connected to the housing (9) by welding; and
a welding bar (3), conductively connected to the lead-out bar (41) of the cover plate (4) by welding, wherein the welding ring (1) and the welding bar (3) are provided on the same side of the housing (9).
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