Lithium ion battery pack capable of uniformly dissipating heat

Abstract

The invention discloses a lithium ion battery pack capable of uniformly dissipating heat. The lithium ion battery pack comprises a shell, wherein the shell is composed of a plurality of clamping parts which are arrayed in parallel and are used for fixing a battery cell; a heat dissipation channel is formed by a gap between the adjacent clamping parts; each clamping part comprises a straight edge forming an external outline of the shell and elastic edges forming the heat dissipation channel, the elastic edges are located at two sides of the straight edge and are integrated to form the clamping part; the corresponding elastic edges in the same clamping part are bent toward each other to fix the battery cell inserted into the clamping part. The elastic edges are in tight contact with the battery cell through elastic effect, so that the battery cell is fixed, and heat energy on the surface of the battery cell can be absorbed very well; meanwhile, the heat dissipation channel is used for outward dissipating the heat, and rapid and in-time heat dissipating effect is realized; generally, the heat dissipation of each battery cell is prone to be uniform and the contact area between the battery pack and air is greatly enlarged; the heat is dissipated in time by the flowing air so that the uniform heat dissipation effect is realized.

Description

Technical field [0001] The invention relates to the field of electric vehicle batteries, in particular to a lithium ion battery pack capable of uniform heat dissipation. Background technique [0002] The heat dissipation system of electric vehicles affects the energy consumption of electric vehicles and the service life of equipment. Among them, the battery of electric vehicles is the most influential. The batteries currently used in electric vehicles include lead-acid batteries, lithium-ion batteries, sodium-sulfur batteries, and nickel-cadmium batteries. Among them, lithium-ion batteries have the characteristics of light weight, high energy storage, high power, and no pollution, so they will gradually replace the existing ones. Lead-acid batteries are widely used. However, because lithium-ion batteries are greatly affected by temperature, excessively high temperatures can easily decompose the battery electrolyte, causing premature battery aging, and also causing uneven chargin...

AI Technical Summary

Problems solved by technology

The existing battery pack structure has a small contact area with the air, which cannot achieve the purpose of rapid heat dissipation. At the same time, the lack of heat dissipation for a single cell can easily lead to local overheating, which in turn makes the battery pack unable to achieve uniform heat dissipation.

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