Power battery top cover and power battery with high space utilization

Abstract

The invention discloses a power battery top cover, which comprises a top cover sheet, two conductive units sealed and arranged on the top cover sheet, an explosion-proof valve, a liquid injection hole structure, and a lower insulating part. The conductive unit includes: a conductive base block protruding from the top cover sheet, a safety structure that can be turned up when punched, welded aluminum plates and plastics; the conductive base block is extended outwardly to form a conductive sheet. Integrate safety structural parts on the conductive unit to enhance the safety performance of the battery cell; without affecting the effective space inside the battery, eliminate the height of the pole protruding from the outside of the battery, increase the height of the battery cell shell, and improve the space utilization of the module; The structure of the top cover is simplified, the number of top cover accessories is reduced, and the cost is reduced; the structure of the conductive unit is optimized, the strength of the conductive unit is improved, and the cost of material processing is reduced; the lower plastic insulating part adopts an integrated structure, which enhances the structural strength of the lower plastic and is easy to assemble. Strong manufacturability.

Description

technical field [0001] The invention mainly relates to the technical field of power batteries, in particular to a power battery top cover with high space utilization and a power battery including the power battery top cover. Background technique [0002] With the increasingly prominent environmental problems, low-carbon economy has become the mainstream of future economic development. The increasingly severe air situation has further promoted the rise of new energy vehicles. As representatives of new energy vehicles, hybrid vehicles and pure electric vehicles have gradually been recognized by manufacturers and consumers. As the main power source of new energy vehicles, power batteries have become one of the key components of electric vehicles. [0003] As a key component of electric vehicles, power batteries have a major impact on the power, economy, and safety of the vehicle. With the gradual standardization of the power battery market, the specifications of power batter...

AI Technical Summary

Problems solved by technology

[0004] 1. The space utilization rate in the module is not high, and the capacity and volumetric energy density of the entire module are greatly affected

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