Lower shell and battery shell

Abstract

The invention discloses a lower shell and a battery shell. In the process of fixedly mounting a battery module, a fixing sleeve is inserted into a first mounting hole, and the fixing sleeve is fixed on a bottom plate through a first thread and a second thread; and then a second fixing part on the battery module is inserted into the fixing sleeve and is fixedly matched with the first fixing part, so that the battery module is stably fixed on the bottom plate. According to the scheme, the battery module fastening points are meshed with one another through the threads, the traditional rivet nut connection is replaced, and the fixing sleeve is arranged on the bottom plate, so the fixing sleeve is more stably fixed on the bottom plate, the rotation failure of the fixing sleeve in the fixing process of the battery module is effectively avoided, a certain risk exists in single-layer sealing of the rivet pulling nut, the battery module can be stably fixed by adopting the fixing sleeve, and themounting stability and the sealing performance of the battery module are improved. Meanwhile, the fixing sleeve is adopted for fixing, so that the rework rate of the lower shell is reduced, the rework amount of the battery shell is reduced, and the manufacturing cost of the battery shell is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a lower case and a battery case. Background technique [0002] With the extensive development of new energy applications, pure electric vehicles are also widely loved by the market. The overall performance of pure electric vehicles mainly depends on the safety and stability of the battery system, for example, the installation stability of the battery module. During the operation of pure electric vehicles, the bumps of the car body or the vibration of the motor will cause certain vibrations to the battery module. If the battery module cannot be stably fixed, it is easy to cause the battery module to be disconnected, short-circuited, etc. in the battery case. . [0003] The traditional battery case usually uses a blind rivet nut to fix the battery module. First, the blind rivet nut is fixed on the bottom plate; and then the battery module is fixed on the blind rivet nut. Howeve...

AI Technical Summary

Problems solved by technology

However, during the fixing process of the battery module, the blind rivet nut is easy to rotate on the bottom plate, which makes the battery module unable to be stably fixed

At the same time, when the blind rivet nut rotates, the entire battery case will be reworked, resulting in time-consuming and labor-intensive processing of the battery case and increased production costs

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