Battery box

Abstract

The invention provides a battery box. The battery box comprises an upper box body, a lower box body, a connecting piece and a fixing piece; the upper box body is provided with a first side wall and a first eave part protruding out of the first side wall in the circumferential direction, and the lower box body is provided with a second side wall and a second eave part protruding out of the second side wall in the circumferential direction. The first eave part and the second eave part are oppositely arranged in the vertical direction, the first eave part is provided with a first connecting hole, and the second eave part is provided with a second connecting hole and a mounting hole spaced from the second connecting hole. And the connecting piece is fixedly connected with the upper box body and the lower box body through the first connecting hole and the second connecting hole. The material density of the lower box body is larger than that of the upper box body, and the height of the first side wall in the vertical direction is larger than that of the second side wall in the vertical direction. According to the battery box provided by the invention, the structure of the lower box body is simplified, and the weight of the lower box body is reduced, so that the grouping efficiency and the energy density of the battery box are improved.

Description

[0001] This application is a divisional application based on the invention with the application number 201811294488.8, the application date is November 01, 2018, the applicant is Ningde Times New Energy Technology Co., Ltd., and the invention name is "battery box". technical field [0002] The invention relates to the technical field of batteries, in particular to a battery box. Background technique [0003] figure 1 It is a perspective view of a battery box in the prior art. refer to figure 1 , the traditional battery box includes an upper box 1' and a lower box 2'. Among them, the upper box 1` is a non-load-bearing part, which mainly plays a protective role. Its thickness is small and can be made of low-density materials; the lower box 2` is a load-bearing part, and its thickness is large and can be made of high-density materials. (such as metal material), and due to being limited by the molding process, the weight of the lower box 2 ′ is relatively heavy. [0004] In ...

AI Technical Summary

Problems solved by technology

[0005] Since the connecting part (i.e., the second eaves 22') of the lower box body 2' of the conventional battery box and the upper box body 1' and the installation part (ie, the third eaves 23') of the battery box are separated from each other, it causes the lower box The height of the second side wall 21 ′ of the body 2 ′ is larger and greater than the height of the first side wall 11 ′ of the upper box 1 ′, thereby increasing the weight of the lower box 2 ′, thus reducing the cost of the battery box. group efficiency

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