Battery cover and battery

Abstract

The invention provides a battery cover and a battery, the battery cover is used for covering the top of a battery cell, the top of the battery cell is provided with a positive tab and a negative tab, the battery cover comprises a top cover and an insulating cover, the insulating cover covers the top of the battery cell, the top cover covers the surface, deviating from the battery cell, of the insulating cover, and the insulating cover comprises an insulating cover plate part and an insulating accommodating part; the insulating cover plate part covers the top of the battery cell and is provided with a first opening through which the positive lug and the negative lug penetrate, and the insulating accommodating part is arranged on one side, deviating from the battery cell, of the insulating cover plate part, is arranged corresponding to the first opening, protrudes towards one side, deviating from the battery cell, relative to the insulating cover plate part and is used for accommodating the positive lug and the negative lug. According to the battery cover and the battery provided by the invention, the internal space of the battery shell occupied by the battery cover can be reduced, so that the utilization rate of the internal space of the battery shell can be improved, and the energy density of the battery is improved.

Description

technical field [0001] The present invention relates to the technical field of batteries, and in particular, to a battery cover and a battery. Background technique [0002] With the development of the new energy industry, people's demand for battery performance is increasing. An existing battery (for example, a lithium battery) includes a battery case, a battery cover, and a battery cell, wherein the battery cell is provided inside the battery case, and the battery cover is provided on the top of the battery cell and the battery case for storing the battery cell. The core is sealed inside the battery case. [0003] However, since the top of the battery cell is provided with a positive electrode and a negative electrode (referring to the conductor that leads the positive and negative electrodes out of the battery), the bottom of the battery cover needs to reserve a large space for the positive electrode and the negative electrode. The internal space of the battery case occu...

AI Technical Summary

Problems solved by technology

[0003] However, since the top of the cell is provided with positive and negative tabs (referring to the conductors that lead out the positive and negative electrodes from the cell), the bottom of the battery cover needs to reserve a large space for the positive and negative tabs. The internal space of the battery case occupied by the battery cover is large, resulting in a waste of the internal space of the battery case, resulting in a low utilization rate of the internal space of the battery case and a low energy density of the battery

Images