The invention provides a power system airtightness self-checking method, a power system and a vehicle, and belongs to the technical field of sealing protection of power systems for new energy vehicles. Comprising the following steps: 1) acquiring weather data after a vehicle is powered on, judging whether extreme weather causing failure of a power system exists or not, and if yes, starting air tightness self-inspection; (2) at least one of an inner cavity of a shell where a driving motor is located, an inner cavity of a shell where a motor controller is located and an inner cavity of a box where a power battery is located is filled with gas till the pressure of the corresponding inner cavity reaches a detection threshold value; and 3) after the set time, detecting the pressure of the cavity reaching the detection threshold value, and if the pressure change value is greater than the set limit value, giving an alarm. According to the invention, the air tightness detection frequency is associated with the rainfall information acquired by the vehicle, and only when the rainfall information exceeds the set rainfall, the air tightness self-detection is carried out, so that the situation that the air tightness fault cannot be found in time due to the too low detection frequency is avoided.
本发明提供了一种动力系统气密性自检方法、动力系统和车辆,属于新能源车用动力系统密封防护技术领域。包括如下步骤:1)车辆上电后获取天气数据,并判断是否存在导致动力系统失效的极端天气,若存在,则开始气密性自检;2)向驱动电机所在壳体的内腔、电机控制器所在壳体的内腔和动力电池所在箱体的内腔中的至少一个中充入气体,直到对应内腔的压力达到检测阈值;3)设定时间后,对达到检测阈值的腔体进行压力检测,若压力变化值大于设定限值,则进行报警。本发明将气密性检测频率与车辆获取到的降雨量信息相关联,只有当降雨量信息超出设定降雨量时,才会进行气密性自检,避免检查频率过低不能及时发现气密性故障。
Power system air tightness self-checking method, power system and vehicle
一种动力系统气密性自检方法、动力系统和车辆
2023-09-05
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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