High-efficiency heat-radiation dynamic cell, temperature control system of electric vehicle and electric vehicle

Abstract

The invention provides a high-efficiency heat-radiation dynamic cell, a temperature control system of an electric vehicle and an electric vehicle. The dynamic cell comprises a cell unit and one or more flat heat pipes of micro heat pipe arrays, wherein the flat heat pipes are bonded at the single face or double faces of the cell unit; and heat accumulated in the dynamic cell is led out of the dynamic cell by the flat heat pipes and is emitted into an environment outside a cell box by a mode of arranging an air passage in the cell box, the temperature in the dynamic cell is lowered, and the combustion or the explosion of the dynamic cell because of the accumulation of the heat is avoided. In the invention, the temperature in the cell box is regulated and controlled in an intellectualized way under a sealed condition by a mode of arranging a valve and a refrigeration fin on the air passage when the environmental temperature exceeds the range of the safety temperature of the dynamic cell, and the influence on the dynamic cell in the cell box because of environmental factors is avoided.

Description

technical field [0001] The invention relates to a high-efficiency heat dissipation power battery, an electric vehicle heat dissipation system using the power battery, and an electric vehicle. Background technique [0002] The battery pack of an electric vehicle or a hybrid electric vehicle is usually composed of dozens or hundreds of battery cells connected in series. The battery pack is the main energy storage element in an electric vehicle. The operation of the battery pack directly affects the overall state of the electric vehicle. . If the electric vehicle battery pack works in a relatively harsh temperature environment for a long time, the performance of the battery will be significantly reduced. If the temperature of the battery pack is too high, the overall service life of the battery pack will be shortened, and in severe cases, the battery pack will spontaneously ignite, causing a serious accident; if the temperature of the battery pack is too low, the output voltag...

AI Technical Summary

Problems solved by technology

However, this cooling method cannot ensure that all the battery cells are evenly exposed to the wind. The local heating of some battery cells will lead to uneven distribution of the temperature field in the battery box, which will cause unbalanced performance of each part of the battery cells and cause a short board effect.

At the same time, due to the realization of the air cooling method, the inside of the battery box needs to be directly connected with the external environment, and if the electric vehicle works in an extreme temperature environment, the temperature inside the battery box may exceed the safe temperature range of the battery pack, which may also cause the battery group not working

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