Battery cap and battery using same

Abstract

The invention relates to the technical field of power batteries, in particular to a battery cap and a battery using the same. The battery cap comprises: a top cover which is arranged on the outer layer of the battery cap and is used as an electrode of a battery; and an explosion-proof membrane which is arranged on the inner layer of the battery cap, wherein the central part of the explosion-proofmembrane is sunken towards one side far away from the top cover, and a connecting structure is arranged at the edge of the explosion-proof membrane and the edge of the top cover and is used for reducing the resistance at the joint of the top cover and the explosion-proof membrane. According to the invention, the connecting structure is arranged between the top cover and the explosion-proof membrane, the resistance generated by the unstable contact surface between the top cover and the explosion-proof membrane can be effectively reduced; and when the current is overlarge, the effect of reducingthe internal heat of the battery is remarkable, the service life of the battery is effectively prolonged, unsafe factors are reduced, the utilization rate of electric energy is improved, the basic structure of the battery cap is not greatly changed, and the batch production cost is low.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a battery cap and a battery using the cap. Background technique [0002] In recent years, with the vigorous development of new energy technology, products related to new energy have also ushered in a climax of development. Among them, the development of new energy vehicles is the most eye-catching, and it is also an industry with relatively complete development and mature technology among various new energy sources. [0003] In addition, electric trains, electric bicycles, etc. have also achieved good development. The development of these industries is inseparable from the progress of battery technology. Among them, the most widely used battery types are lead-acid batteries, nickel-cadmium batteries, lithium iron phosphate batteries, nickel-metal hydride batteries, etc. In the storage battery, the structure of the battery cap is particularly critical for the safety and ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a battery cap, which can solve the problems in the prior art that the contact surface between the top cover and the explosion-proof diaphragm is not firm, the internal power of the battery is unstable, the internal temperature of the battery rises, there are potential safety hazards, and even major accidents are caused. question

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