Thermal management system of new energy vehicle

Abstract

The invention discloses a thermal management system of a new energy vehicle. The thermal management system comprises a compressor, a condenser, a dry filter, a first expansion valve, an HAVC, a gas-liquid separator and an ECU. The condenser of the thermal management system is a water cooling type condenser. The condenser achieves heat exchange of high temperature refrigerant and water by a first water flow pipeline and a high temperature refrigerant flow pipeline which exchange heat with each other. After heat exchange, the high temperature refrigerant passes through the dry filter and the first expansion valve and then passes through an evaporator of the HAVC for cooling, and finally passes through the gas-liquid separator and flows back to the compressor to complete refrigerant cycle. When water in the first water flow pipeline is heated, the water is used for a warm air core of the HAVC. According to the thermal management system, heat of the high temperature refrigerant compressedby the compressor is used for heating the interior of a vehicle, and therefore thermal energy of a new energy vehicle can be used more reasonable, energy efficiency ratio is higher, and the aim of saving energy is achieved.

Description

technical field [0001] The invention relates to a thermal management system, in particular to a thermal management system of a new energy vehicle. 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 ...

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

Images