A battery pack module and its fixing method

Abstract

The present invention provides a battery pack module, comprising: two battery cell brackets, which can relatively fix cylindrical lithium batteries up and down; each battery cell bracket is equipped with a plurality of elastic buckles; A plurality of holes are left on each manifold, and the holes are divided into a first hole, a second hole and a third hole; wherein at least one of the elastic clips The buckle can be stuck on at least one of the first holes; a plurality of aluminum profile tubes, at least one of the aluminum profile tubes can pass through at least one of the second holes, and be inserted between adjacent cylindrical lithium batteries in the vertical direction The gap between the battery bracket and the manifold can be fixed; it can not only ensure the stability and reliability of the connection between the manifold and the cell bracket, but also avoid the damage caused by the loosening of screws.

Description

【Technical field】 [0001] The invention relates to the field of lithium ion batteries, in particular to a battery pack module and a fixing method thereof. 【Background technique】 [0002] At present, with the rapid development of new energy vehicles, the country is also promulgating relevant policies favorable to new energy vehicles, but the safety of vehicle battery packs is becoming more and more prominent in the structural design of battery packs, especially the safe fixing of battery pack modules Way. [0003] At this stage, the status quo of fixing the battery pack module is as follows: firstly, the contact surface between the manifold and the cell bracket is fully bonded with glue. The disadvantages are: 1) the glue itself and the labor cost required for bonding are expensive; 2) the glue It takes a long time to completely dry, which virtually prolongs the production time; 3) The reliability of simple glue bonding is not high. Once the glue fails, the manifold will fall...

AI Technical Summary

Problems solved by technology

[0003] At this stage, the status quo of fixing the battery pack module is as follows: firstly, the contact surface between the manifold and the cell bracket is fully bonded with glue. The disadvantages are: 1) the glue itself and the labor cost required for bonding are expensive; 2) the glue It takes a long time to completely dry, which virtually lengthens the production time; 3) The reliability of simple glue bonding is not high. Once the glue fails, the manifold will fall off, and the consequences will be disastrous.

Secondly, the battery bracket and the battery bracket are connected by screws and nuts. The disadvantages are: 1) The battery pack is in a long-term vibration environment, and the screw is in direct contact with the bus plate to be charged. Once the screw is loose, the charged screw and the bus board Sparks are generated due to vibration and collision, and the consequences will be disastrous

2) Due to the mechanical tightness of the screws, and because the material of the cell bracket is plastic, after the screw is tightened, the cell bracket will be squeezed and deformed, which will affect the flatness of the manifold and cause unnecessary damage to the actual production. troubled

Although it is also connected with plastic screws, the torque strength of the plastic screws is not enough

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