Sealed box body, power battery box using box body and new energy vehicle

Abstract

The invention provides a sealed box body, a power battery box using the box body and a new energy vehicle. The sealed box body comprises a lower box body and a box cover; a groove used for injecting sealant is formed in the top end of the lower box body, the groove comprises an inner side wall and an outer side wall, a contact surface used for making contact with the upper edge of the inner side wall and / or the outer side wall of the groove is arranged at the bottom end of the box cover, and the contact surface is used for extruding the sealant in the groove so that the sealant can be connected with the lower box body and the box cover in a sealed mode after being cured; and one of the bottom end of the box cover and the top end of the lower box body is provided with a positioning pin, andthe other is provided with a positioning hole. The sealed box body has the beneficial effects that by adopting a positioning matching mode of the positioning pins and the positioning holes, the structure is simpler, and machining and manufacturing are convenient; in the sealant injection process, the sealant injection amount is only ensured to be slightly higher than the upper edge of the inner side wall and / or the outer side wall, the upper edge of the inner side wall and / or the outer side wall can serve as a sealant injection reference, and compared with the prior art without reference, thesealant injection amount is relatively easy to control.

Description

technical field [0001] The invention relates to a sealed box body, a power battery box and a new energy vehicle using the box body. Background technique [0002] At present, the power battery boxes used in new energy vehicles generally include the lower box body and the box cover. There are two main ways to seal the lower box body and the box cover. One is to use gaskets and bolts to fix it, and the other is to use sealant. and bolts. Both of these two methods require the use of bolts, and the quantity is relatively large. On the one hand, it requires more assembly time and the operation is more cumbersome. Blind rivet nuts increase the processing cost of the box cover and the lower box body; on the other hand, in order to make the box cover and the lower box well matched, the position accuracy requirements of the fixing holes and the rivet nuts are relatively high. , It is necessary to design special tooling, which increases the cost of the tooling; moreover, a large numb...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sealed box to solve the problem that the positioning structure of the box in the prior art is relatively complicated and it is difficult to control the amount of glue injection; The power battery box with the amount of glue injected; the purpose of the present invention is to provide a new energy vehicle with a simple positioning structure of the power battery box and an easier control of the amount of glue injected

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