The invention belongs to the technical field of new energy vehicles, and discloses a multi-mode transcritical CO2 new energy vehicle thermal management system and method based on an ejector. Valve assemblies such as a plurality of four-way reversing valves, all-way throttle valves and two-way throttle valves in the system are accurately controlled and adjusted; according to the invention, a battery thermal demand index and a passenger compartment thermal comfort demand index are provided to respectively indicate the demand of a battery on cold and hot and the perception of a passenger compartment on cold and hot conditions; the current state of the system is judged by collecting operation and external working condition parameters such as the battery temperature, the compartment temperature and the environment temperature, and the mode switching logic of the multi-mode transcritical CO2 thermal management system based on the ejector is provided. The operation stability of the transcritical CO2 new energy automobile thermal management system based on the ejector is guaranteed, the thermal efficiency of system operation is improved, and the suitable working temperature requirement of a battery motor, the thermal comfort requirement of a human body and high-thermal-efficiency operation of the system can be met.
本发明属于新能源汽车技术领域,公开了一种基于喷射器的多模式跨临界CO2新能源车辆热管理系统及方法,通过对系统中多个四通换向阀、全通节流阀和双向节流阀等阀组件的精确控制和调节,实现了对车辆供热和供冷需求的满足本发明提出了电池热需求指数和乘员舱热舒适性需求指数分别指示电池对冷热的需求和乘员舱对冷热状况的感知;通过采集电池温度、车厢温度、环境温度等运行及外部工况参数,对系统当前状态进行判断,并提出了基于喷射器的多模式跨临界CO2热管理系统的模式切换逻辑。保障基于喷射器的跨临界CO2新能源汽车热管理系统的运行稳定性并提升系统运行的热效率,可以满足电池电机的适宜工作温度需求、人体的热舒适性需求和系统的高热效率运行。
Multi-mode transcritical CO2 new energy vehicle thermal management system and method based on ejector
一种基于喷射器的多模式跨临界CO2新能源车辆热管理系统及方法
2024-10-01
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 |
Vehicle transcritical CO2 ejector refrigerating system and active regulation control method
European Patent Office | 2024
|Performance of Transcritical Carbon Dioxide System with Ejector
British Library Online Contents | 2006
|Performance characteristics of ejector expander transcritical CO2 refrigeration cycle
Online Contents | 2012
|Energy flow system control method based on transcritical CO2 thermal management
European Patent Office | 2024
|Transcritical CO2 system for vehicle thermal management and control method thereof
European Patent Office | 2022
|