Thermal management system and vehicle

Abstract

The embodiment of the invention provides a thermal management system and a vehicle. The thermal management system includes: a first subsystem including a first refrigerant, a first compressor configured to compress the first refrigerant and circulate the compressed first refrigerant in the first refrigerant passage, and a first refrigerant passage coupled between an outlet and an inlet of the first compressor, wherein the first compressor is configured to compress a first refrigerant and circulate the compressed first refrigerant in the first refrigerant passage, and the first refrigerant is used for absorbing heat from a passenger compartment and a battery of the vehicle; a second subsystem including a second refrigerant, a second compressor, and a second refrigerant passage coupled between an outlet and an inlet of the second compressor, the second compressor configured to compress the second refrigerant and circulate the compressed second refrigerant in the second refrigerant passage, and the second refrigerant to release heat to the passenger compartment and the battery; and a first heat exchange device which is thermally coupled to the first refrigerant passage and the second refrigerant passage and is used for transferring heat of the first refrigerant to the second refrigerant. The efficiency and the refrigerating capacity of the thermal management system are improved.

Description

technical field [0001] The present disclosure mainly relates to the technical field of thermal management, and more particularly, to a thermal management system and a vehicle including the thermal management system. Background technique [0002] In vehicles such as electric vehicles, thermal management systems are often provided to regulate the temperature of the passenger compartment to improve the ride experience. At the same time, this thermal management system can also meet the thermal management requirements of some equipment in vehicles, such as batteries and motors. For example, when charging the battery of an electric vehicle, especially when performing super fast charging, the battery will generate a lot of heat. Therefore, in order to ensure that the battery does not overheat, it is necessary to use the vehicle's thermal management system to cool the battery; in addition, winter Low temperature will limit the charging and discharging performance of the battery of ...

AI Technical Summary

Problems solved by technology

However, there are several problems with this thermal management system

For example, since the refrigeration cycle and the heating cycle share the same passage system, this thermal management system needs to install a large number of valves to switch between different flow directions under cooling and heating conditions, which makes the control too complicated and increases The flow resistance of the refrigerant flow is reduced, resulting in poor reliability and reduced system efficiency; in addition, such systems usually use a single refrigerant, which makes it impossible to take into account efficient cooling and heating at the same time, that is, the heating efficiency when using refrigeration refrigerants Low, and the cooling efficiency is low when the heating refrigerant is used, and usually a liquid storage tank or a gas-liquid separator is required to match the different refrigerant filling requirements of cooling and heating

[0004] The above-mentioned deficiencies of current thermal management systems further affect the performance of vehicles in some aspects

For example, when super fast charging the battery of an electric vehicle, the battery will overheat due to the generation of a large amount of heat. However, the current thermal management system lacks sufficient cooling capacity to effectively cool down the battery under super fast charging. Affect the fast charging performance of vehicle batteries

For example, in order to make up for the lack of heating capacity, an auxiliary positive temperature coefficient (Positive Temperature Coefficient, PTC) heating device or a high voltage heater (High Voltage Heater, HVH) is usually installed in the electric vehicle to provide auxiliary heating to heat the battery in winter and the passenger compartment, but these auxiliary heating devices increase the energy consumption of electric vehicles and thus affect the vehicle's endurance performance

Images