Electric automobile battery high-temperature low-temperature charging and heat management system

Abstract

The invention relates to an electric automobile battery high-temperature low-temperature charging and heat management system. The system comprises a battery heater, a plate type heat exchanger, a battery water pump, a vehicle auxiliary water tank, a compressor, a condenser, an electromagnetic valve, a thermostatic expansion valve, an evaporator and an electronic expansion valve. The vehicle auxiliary water tank, the battery water pump, the plate type heat exchanger and the battery heater are sequentially connected, the compressor, the condenser, the electronic expansion valve and the plate type heat exchanger are sequentially connected, the plate type heat exchanger is connected with the compressor, the vehicle auxiliary water tank, the battery water pump and the plate type heat exchangerare sequentially connected, the compressor, the condenser, the electromagnetic valve, the thermostatic expansion valve and the evaporator are sequentially connected, and the evaporator is connected with the compressor. High-temperature low-temperature charging management and heat management of a power battery can be directly achieved on an electric automobile, in the charging process and after charging is finished, the temperature of the power battery can be kept at the most proper numerical value, the performance of the power battery is kept in the best state, the service life of the power battery is prolonged, user experience is good, and the requirement for actual application can be well met.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle battery charging devices, and in particular relates to a high-low temperature charging and heat management system for electric vehicle batteries. Background technique [0002] Global concerns about the future energy crisis and the enhancement of environmental awareness in various countries have promoted the rapid development of the new energy vehicle industry. Electric vehicles have been more and more widely used. China's electric vehicles also ushered in explosive growth last year. Electric vehicles have been applied on a large scale in many fields such as public transportation, rental, logistics, and passenger vehicles. [0003] The more applications of a new thing, the more problems it will create, and electric vehicles are no exception. When the cold winter is approaching, electric vehicles using lithium-ion batteries as power sources encounter difficulties in use. First of all, aft...

AI Technical Summary

Problems solved by technology

However, after the charging is completed, the vehicle will still drop rapidly with the ambient temperature after it has been left standing for a long time. When the user uses the vehicle, some of the above-mentioned problems are caused, and the user experience is poor.

The structural design of the charging and thermal management device in the prior art is unscientific, and it cannot realize reasonable control of the battery temperature during the charging process and after the charging is completed.

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