| CPC H01M 50/15 (2021.01) [H01M 50/103 (2021.01); H01M 50/143 (2021.01); H01M 50/317 (2021.01); H01M 2220/10 (2013.01)] | 20 Claims |
|
1. An end cover assembly, comprising:
a top cover having a first mounting surface and a second mounting surface, wherein the first mounting surface is positioned facing away from the second mounting surface in a thickness direction of the top cover;
the top cover defining a first mounting recess, an explosion-proof hole, and a vent recess, wherein the first mounting recess is recessed from the first mounting surface, the explosion-proof hole extends through a bottom wall of the first mounting recess and the second mounting surface, one part of the vent recess is recessed from the first mounting surface, the other part of the vent recess is recessed from the bottom wall of the first mounting recess, and the vent recess is in communication with the explosion-proof hole; wherein a width K1 of the vent recess gradually increases in an extension direction of the vent recess, and a width of one end of the vent recess in communication with the explosion-proof hole is smaller than a width of the other end of the vent recess away from the explosion-proof hole; and wherein a depth H1 of the vent recess gradually increases in an extension direction of the vent recess, and a depth of one end of the vent recess in communication with the explosion-proof hole is smaller than a depth of the other end of the vent recess away from the explosion-proof hole;
an explosion-proof valve being attached to the second mounting surface and covering an opening of the explosion-proof hole positioned on the second mounting surface; and
a protective sheet being attached to the bottom wall of the first mounting recess and covering an opening of the explosion-proof hole positioned on the bottom wall of the first mounting recess and the other part of the vent recess; wherein the protective sheet has a protective peripheral surface, the protective peripheral surface and a side wall of the first mounting recess defines an avoidance gap, and the avoidance gap is in communication with the vent recess;
wherein a vent is defined at one end of the vent recess away from the explosion-proof hole, and the vent is recessed from the first mounting surface.
|