The invention relates to the technical field of heat management, in particular to an integrated heat management system of a pure electric commercial vehicle based on a heat pump, which utilizes a carbon dioxide refrigerant with a wider working temperature range to complete switching of a high-pressure refrigerant loop and a low-pressure refrigerant loop through four electromagnetic valves and a three-way valve. In addition, a heat exchanger is used for exchanging heat between a refrigerant loop and a cooling water path, and meanwhile, a three-way valve is configured to control whether the heat exchanger is involved or not in different modes; furthermore, the cooling liquid loop and the refrigerant loop are used for cooling the power battery in parallel, so that the temperature and the temperature difference of the battery can be quickly controlled within a reasonable range, the service life of the battery is prolonged, and the endurance achievement rate in winter is increased. The problems that a whole vehicle integrated heat management system based on a heat pump framework is multiple in mode, high in complexity and insufficient in energy utilization are solved.
本发明涉及热管理技术领域,具体涉及一种基于热泵的纯电动商用车集成式热管理系统,利用工作温度范围更加广的二氧化碳冷媒,通过四个电磁阀和一个三通阀即可完成高低压冷媒回路的切换,此外使用换热器将冷媒回路与冷却水路进行热量交换,同时配置一个三通阀控制不同模式下是否进行换热器的介入;进一步的,将冷却液回路和冷媒回路以并联的方式用于动力电池冷却,能快速将电池温度和温差控制在合理范围,提高电池使用寿命和冬季续航达成率。本发明解决了基于热泵架构下整车集成式热管理系统模式多、复杂度高、能量利用不充分的问题。
Pure electric commercial vehicle integrated heat management system based on heat pump
一种基于热泵的纯电动商用车集成式热管理系统
2024-06-14
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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