Assembling method for high-radiating lithium ion battery module

Abstract

The invention discloses an assembling method for a high-radiating lithium ion battery module. A hollow annular water tank consists of a stainless steel inner layer and a composite aluminium alloy outer layer; the volume of the stainless steel inner layer can hold a plurality of lithium ion batteries; the composite aluminium alloy outer layer is coated at the distance of 5 to 50 mm from the outer end surface of the stainless steel inner layer; the composite aluminium alloy outer layer consists of side panels and a bottom plate; each side panel and the bottom plate are extended from the centre to the two ends and are symmetrically etched with a plurality of horizontal radiating strips with different density surfaces; a water inlet pipe is assembled at the bottom end of one side panel; a water outlet pipe is assembled at the upper end of another side panel; gaps among various lithium ion batteries are filled with conductive adhesive; connecting pieces and electrode posts of various lithium ion batteries are welded in sequence to form a positive pole bus and a negative pole bus of the lithium ion battery module by adopting ultrasonic waves. The assembling method has the advantages of high cooling speed, uniform temperature, good effect, convenience and the like; the radiating effect can be improved by composite aluminium alloy; the weight is light and the strength is high; the high-radiating lithium ion battery module has high radiating 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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