The invention relates to the technical field of automobile thermal management, and discloses a carbon dioxide refrigerant leakage control method and device. The method detects the CO2 diffusion velocity of the air supply outlet of the air conditioner in real time; when the CO2 diffusion speed is larger than a preset speed threshold value, the CO2 concentration in the vehicle is obtained; if the CO2 concentration in the vehicle is larger than the preset first concentration threshold value within the preset first time interval, the vehicle window is controlled to be opened; if the CO2 concentration in the vehicle is smaller than or equal to a preset first concentration threshold value, switching to an air conditioner external circulation mode; after the vehicle window is opened, if the CO2 concentration in the vehicle is smaller than or equal to a second concentration threshold value within a preset second time interval, the vehicle window is controlled to be closed, and an air conditioner external circulation mode is switched to; and the CO2 concentration and the air conditioner load are used for adjusting the opening degree of an air conditioner internal and external circulation air door in the air conditioner external circulation mode. According to the invention, the response speed and the response precision of refrigerant leakage are improved, energy can be reasonably utilized, and the comfort of a passenger compartment is improved.
本发明涉及汽车热管理技术领域,公开了一种二氧化碳制冷剂泄露控制方法及装置。该方法实时检测空调送风口的CO2扩散速度;当CO2扩散速度大于预设速度阈值时,获取车内CO2浓度;若车内CO2浓度在预设第一时间间隔内均大于预设第一浓度阈值,则控制车窗开启;若车内CO2浓度小于或等于预设第一浓度阈值,则切换至空调外循环模式;在车窗被开启后,若车内CO2浓度在预设第二时间间隔内均小于或等于第二浓度阈值,则控制车窗关闭,并切换至空调外循环模式;在空调外循环模式下利用CO2浓度和空调负荷调节空调内外循环风门的开度。本发明提高了制冷剂泄露的响应速度和响应精度,能合理利用能源,提高了乘员舱的舒适性。
Carbon dioxide refrigerant leakage control method and device
一种二氧化碳制冷剂泄露控制方法及装置
2024-12-10
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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