Heat management system for new energy automobile

Abstract

The invention discloses a heat management system for a new energy automobile. The heat management system comprises a compressor, a condenser, an expansion valve, HVAC (High Voltage Alternating Current), a gas-liquid separator, a heat exchange module and an ECU (Electronic Control Unit), wherein the heat exchange module comprises a water flow pipeline and a refrigerant flow pipeline capable of mutually performing heat exchange; the refrigerant flow pipeline is communicated with an outlet of the condenser by virtue of a low-temperature refrigerant shunt pipeline; an electric auxiliary heating device is arranged on the outer part of the water flow pipeline; and after heat exchange is performed between the cooling capacity of the refrigerant or heating capacity and water, water is fed into a battery temperature control assembly, a motor electrically controlled heat dissipation assembly and an HVAC heating core, so that electrically controlled refrigerating or heating of the battery pack and the motor can be realized, and HVAC heating is also realized. According to the heat management system, the structure is simplified, in-vehicle temperature regulation, battery temperature regulationand electrically controlled motor temperature regulation can be simultaneously met, temperature regulation response is rapid, and the energy efficiency ratio is high.

Description

technical field [0001] The invention relates to a thermal management system used in new energy vehicles. Background technique [0002] As the society has higher and higher requirements for environmental protection and energy saving, new energy vehicles are getting more and more attention from the government and automobile manufacturers. However, because new energy vehicles use batteries and motors as driving power sources, there are always some technical difficulties in the actual research and development process: 1. The service life and efficiency of batteries are seriously affected by temperature, and the temperature is too high or too low. It will affect the service life and battery life of the battery. Therefore, the battery needs to be cooled or heated. 2. New energy vehicles use motors as driving power. The electric motors need to be controlled for a long time to dissipate heat, while the interior of new energy vehicles needs to be heated in winter and cooled in summe...

AI Technical Summary

Problems solved by technology

Although the temperature control method of circulating water is superior to air cooling, the structure is more complicated, and multiple heat exchangers are required at the same time, and the heat exchange effect is poor, and the energy efficiency ratio is low.

[0009] The motor electronically controlled heat dissipation system is similar to the battery temperature control system, but the structure is also relatively complicated, and multiple heat exchangers are required, resulting in increased costs

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