The invention relates to the technical field of new energy automobile thermal management, and provides a thermal management system, a control method and an automobile. The heat management system comprises a refrigerating loop and a bypass branch, and the bypass branch can provide virtual load for the compressor and improve the air outlet temperature of the evaporator. By means of the mode of additionally arranging the bypass branch, an original mode of adjusting through starting and stopping of the compressor is replaced, and damage and power consumption caused by frequent starting and stopping of the compressor are reduced. The pressure sensor is adopted to monitor the state of the evaporator, and the reaction time is adjusted due to the fact that the pressure detection speed is higher than the temperature detection speed. By adjusting the opening degree of the bypass expansion valve, the rotating speed of the compressor can be increased, the refrigerant flow in the system can be increased, the oil return performance of the compressor can be improved under the low-load state, and the situation that noise is generated due to frequent starting and stopping of the compressor, and the comfort of a passenger compartment is affected is avoided.
本发明涉及新能源汽车热管理技术领域,提供了热管理系统、控制方法及汽车。热管理系统包括制冷回路和旁通支路,旁通支路既能够为压缩机提供虚拟负载,提高蒸发器的出风温度。通过增设旁通支路的方式,代替原有的通过压缩机启停调节的方式,降低了压缩机因频繁启停而出现的损伤及功耗。采用压力传感器对蒸发器的状态进行监测,由于压力探测的速度快于温度的探测速度,调节反应时间。通过调节旁通膨胀阀开度,可以使压缩机在低负荷状态下,提升转速,增加系统内的冷媒流量,提高压缩机的回油性能,不会因频繁启停压缩机而产生噪音影响乘客舱的舒适性。
Thermal management system, control method and automobile
热管理系统、控制方法及汽车
2024-04-12
Patent
Electronic Resource
Chinese
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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