Integrated passenger compartment heat pump air conditioner for pure electric vehicle and tri-electric heat management system

Abstract

The invention discloses an integrated passenger compartment heat pump air conditioner for a pure electric vehicle and a tri-electric heat management system. The integrated passenger compartment heat pump air conditioner comprises a three-heat-exchanger heat pump air conditioning system, a battery heat management system and a motor electric-control heat management system, wherein a heat pump air conditioning system of a passenger compartment is a novel three-heat-exchanger heat pump air conditioning system; the battery heat management system and the heat pump air conditioning system exchange heat to define a secondary loop; the battery heat management system is regulated by an electronic expansion valve, and different temperature-control needs are realized through an electronic water pump,so that different mode functions are realized through switching of a three-way valve. A heat management function of the tri-electric heat management system is controlled by two three-way valves, fivesolenoid valves and one one-way valve. During electric-motor heat dissipation, the motor independently dissipates heat through a low-temperature water tank, and also can be connected with a battery inseries and then can co-dissipate heat through the low-temperature tank. The whole vehicle heat management system of the electric vehicle integrates functions of passenger compartment heat management,battery heat management and motor electric-control heat management, and can realize heat management needs of full-range working conditions.

Description

technical field [0001] The invention relates to the technical field of automobile thermal management, in particular to an integrated passenger compartment heat pump air conditioner and a three-electric thermal management system for pure electric vehicles. Background technique [0002] In recent years, with the continuous consumption of traditional energy such as oil, in order to adapt to the development of the times, electric vehicles are developing rapidly and gradually replacing traditional fuel vehicles. More and more companies are also investing a lot of manpower and material resources in the research of electric vehicles and in production. [0003] The driving power of electric vehicles and fuel vehicles is different, and there is also a big difference in the air conditioning of the two. It is mainly reflected in: the refrigeration compressor of the air-conditioning system of fuel vehicles is driven by the drive pulley of the engine, while the compressor of the air-con...

AI Technical Summary

Problems solved by technology

In comparison, the thermal management of the electric system is more complex, with more components and high-end

Studies have shown that electric vehicles can only exert their best performance at 20-25°C. When the operating temperature of the battery is higher than 45°C, the service time of the battery will be significantly shortened. At 60°C, the battery will have a risk of explosion.

And when the working temperature of the battery is too low, the charging time will be greatly increased.

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