Power battery pack air cooling system

Abstract

The invention discloses an air cooling heat dissipation system for a power battery. The air cooling heat dissipation system comprises a power battery pack and an air adjusting structure; the power battery pack comprises a shell, a ceramic shell, a metal arc-shaped plate, a left shell, a right shell and a bottom plate; the shell is an n-shaped structure, which is composed of a top plate, a left plate and a right plate; the ceramic shell is a vertically transparent ceramic sintered part; four corners of the ceramic shell are each provided with a metal arc-shaped body; two edges of the metal arc-shaped body are clamped on a locating protrusion clamp; a battery core is clamped in the centre of each metal arc-shaped body; the battery core and the four metal arc-shaped plates are in line contact; and a cold air inlet and a hot air outlet are connected with an external circulating wind source through a wind pipe. The thermal expansion coefficient of the ceramic shell is small; the problem that the battery pack is expanded and deformed can be solved; deformation of the battery core is limited in the ceramic shell; and the pack expansion phenomenon on the whole of the battery pack can be avoided.

Description

technical field [0001] The invention relates to the field of power battery technology, specifically the power battery pack air cooling system for new energy vehicles. Background technique [0002] At present, lithium-ion power batteries are popular in my country, and lithium iron phosphate batteries refer to lithium-ion batteries that use lithium iron phosphate as the positive electrode material. [0003] There are many kinds of positive electrode materials for lithium-ion batteries, mainly including lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobaltate is currently the positive electrode material used in most lithium-ion batteries, while other positive electrode materials have not been mass-produced in the market due to various reasons. Lithium iron phosphate is also one of the lithium-ion batteries. In terms of the principle of materials, lithium iron phosphate is also an interca...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the deficiencies of the prior art, the present invention provides a power battery pack, which is firstly used to solve the problem of insufficient heat dissipation between the cells in the battery pack, and provides a power battery pack with an approximate constant temperature controllable within a certain temperature range At the same time, it solves the problem of electrode misalignment caused by the heating and expansion of the battery. At the same time, it is easy to assemble and produce, modular, and compact in structure, reducing the use and manufacturing costs.

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