A kind of assembling method of lithium-ion battery module with high heat dissipation

Abstract

A method for assembling a lithium-ion battery module with high heat dissipation. The hollow annular water tank is composed of an inner layer of stainless steel and an outer layer of composite aluminum alloy. The end-face spacing is 5-50mm, and the outer layer of composite aluminum alloy is wrapped. The outer layer of composite aluminum alloy is composed of side panels and bottom plates. Several horizontal lines with different density surfaces are symmetrically etched from the middle of the side panels and bottom plates of each plate to both ends. Heat dissipation strip, the bottom end of one side panel is equipped with a water inlet pipe, and the upper end of the other side panel is equipped with a water outlet pipe, fill the gap of each lithium ion battery with conductive glue, and use ultrasonic waves to connect the connecting piece to the electrode column of each lithium ion battery. The positive and negative bus lines of the lithium ion battery module are formed by welding in sequence. The invention has the advantages of fast cooling speed, uniform temperature, good effect, convenience, etc. The composite aluminum alloy can not only improve the heat dissipation effect, but also has light weight and high strength. Has better heat dissipation performance and safety performance.

Description

technical field [0001] The invention belongs to the technical field of lithium ion battery applications, and in particular relates to a method for assembling high heat dissipation lithium ion battery modules. Background technique [0002] Lithium-ion battery modules are an important part of power battery systems and are widely used in electric vehicles, buses, and power tools. Since the lithium-ion battery module will cause a large amount of heat generation and uneven heat distribution during the high-rate charge and discharge process, long-term use will shorten the service life of the battery and affect the safety performance of the lithium-ion battery module. [0003] Chinese patent CN200969366Y discloses a battery pack for hybrid electric vehicles with an air-cooled forced heat dissipation structure. Although it can improve the heat dissipation performance of the battery pack, the effect is not obvious. At the same time, it will cause the module to shake during use, there...

AI Technical Summary

Problems solved by technology

Because the lithium-ion battery module will cause large heat generation and uneven heat distribution during the high-rate charge and discharge process, long-term use will shorten the service life of the battery and affect the safety performance of the lithium-ion battery module

[0003] Chinese patent CN200969366Y discloses a battery pack for hybrid electric vehicles with an air-cooled forced heat dissipation structure. Although it can improve the heat dissipation performance of the battery pack, the effect is not obvious. At the same time, it will cause the module to shake during use, thereby causing potential safety hazards.

[0004] Chinese patent CN204230385 U discloses a high thermal conductivity lithium-ion battery module. The battery module adopts a regular hexagonal structure combined with a water cooling method for module heat dissipation. It has good thermal conductivity, insulation and electrical protection performance, which is conducive to improving the battery module. And the safety and cycle life of the system, but there are potential safety hazards caused by the shaking between the batteries during use, and the heat dissipation performance is average

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