A top cover assembly and a battery

Abstract

The utility model belongs to battery technical field discloses a top cover subassembly and battery, top cover subassembly includes top cover piece, riveting spare and pole piece, is equipped with the pole hole on top cover piece, riveting spare is installed in top cover piece and is insulated with top cover piece setting, riveting spare has the pole column perforation that sets up with the pole hole corresponding, the pole column perforation includes the cooperation hole and the limit hole that link together, on the connecting plane of cooperation hole and limit hole, the projection of limit hole completely covers the projection of cooperation hole, the projection area of limit hole is greater than the projection area of cooperation hole, limit hole sets up in the side near top cover piece, cooperation hole sets up in the side away from top cover piece, pole piece includes riveting main part and pole main part that connect in proper order, riveting main part cooperates in cooperation hole, pole main part cooperates in the pole hole, and the end of pole main part near riveting main part is limited in limit hole. The overcurrent capacity of this top cover subassembly is good, and the compactness of structure is high, can satisfy the quick charge and discharge while prolonging the cycle life of battery.

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