In order to solve the problem that the endurance mileage of an existing electric automobile is easy to decrease in summer and winter, the invention provides the whole electric automobile thermal management system, and the system transfers waste heat of a three-power system to a heat exchanger through a cooling liquid loop to heat air in an automobile room. Therefore, the heating capacity demand of the heat pump system and the PTC auxiliary heating system is reduced, and the power consumption is also reduced, so that the technical problem that the endurance mileage of the electric automobile is rapidly reduced due to the adoption of PTC auxiliary heating in the prior art is solved. In the winter heating mode, if the power of the three-electricity system is small, waste heat of the motor electric control system can be used for heating the battery pack, and if the power of the three-electricity system is large, the waste heat of the motor electric control system is used for heating air in a vehicle, and the heating requirements of the heat pump system and the PTC auxiliary heating system are reduced; in the summer refrigeration mode, according to the temperature threshold value of the three-electricity system, when the temperature threshold value is lower than the temperature threshold value, the three-electricity system adopts natural heat dissipation, and when the temperature threshold value is higher than the temperature threshold value, forced cooling is adopted, and the refrigerating capacity of the heat pump system is effectively reduced.
针对现有电动汽车的续航里程在夏、冬季容易下降的问题,本发明提供了一种电动汽车整车热管理系统,本系统通过将将三电系统余热通过冷却液回路转送至换热器处,进而加热车室内空气。因此,热泵系统与PTC辅热系统制热量需求减小,其耗电量也降低,从而解决了现有采用PTC辅助制热,导致电动汽车续航里程迅速下降的技术问题。冬季制热模式,若三电系统功率较小,可利用电机电控系统余热加热电池包,若三电系统功率较大,则利用电机电控系统余热加热车室内空气,减小热泵系统与PTC辅热系统制热需求;夏季制冷模式,根据三电系统温度阈值,在低于温度阈值时,三电系统采用自然散热,在高于温度阈值时,再采用强制冷却,有效减少热泵系统的制冷量。
Whole vehicle thermal management system of electric vehicle
一种电动汽车整车热管理系统
2023-10-10
Patent
Elektronische Ressource
Chinesisch
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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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