Temperature control system of power battery of electric automobile

Abstract

The invention relates to a temperature control system of a power battery of an electric automobile and belongs to the field of power batteries. A heat-conducting base plate is fitted and fixedly arranged on a side face of a battery pack; a thermoelectric module is fitted and fixed into the heat-conducting base plate; a control terminal is used for controlling a current switching unit to switch a current direction, so that the battery pack is heated or refrigerated by the thermoelectric module. Aiming at the disadvantages that the heat-conducting capability of the heat-conducting base plate is fixed and the thermoelectric module is directly exposed and is prone to damage, the thermoelectric module is arranged in the heat-conducting base plate; the thermoelectric module is combined with the heat-conducting base plate so that heating and refrigeration are integrated; the switching of the heating and the refrigeration is realized through the current switching unit; the thermoelectric module has an adjustable heat conducting capability, the current of the thermoelectric module is adjusted through a current adjusting unit and high-precision temperature control is realized; an automatic control system is composed of a wireless communication module, so that a remote control and / or program control man-machine interaction function can be realized.

Description

technical field [0001] The invention belongs to the field of power batteries, and in particular relates to a temperature control system for power batteries of electric vehicles. Background technique [0002] At present, the cooling schemes for power battery packs of electric vehicles mainly include liquid cooling and air cooling. The disadvantages of the liquid cooling system are that the system is complex, has high safety requirements, and is expensive. The main disadvantages of air cooling are low cooling efficiency, uneven cooling and heat dissipation effect, and complicated flow path design. And regardless of liquid-cooled or air-cooled solutions, neither cooling nor heating can be compatible. Both air-cooled and liquid-cooled methods are only cooling. Therefore, when system heating is required, the heating system needs to be redesigned in the battery pack to achieve the heating effect. Two independent systems for cooling and heating are installed on the power battery p...

AI Technical Summary

Problems solved by technology

[0002] At present, the cooling schemes of the power battery packs of electric vehicles mainly include liquid cooling and air cooling. The disadvantage of the liquid cooling system is that the system is complex, has high safety requirements, and is expensive.

The main disadvantages of air cooling are low cooling efficiency, uneven cooling and heat dissipation effect, and complicated flow channel design

And regardless of liquid-cooled or air-cooled solutions, neither cooling nor heating can be compatible

Both air-cooled and liquid-cooled methods are only for cooling. Therefore, when system heating is required, the heating system needs to be redesigned in the battery pack to achieve the heating effect. Two independent systems for cooling and heating are installed on the power battery pack. This will make the whole system more complicated and make later maintenance difficult

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