The invention relates to a control method, device and system for a vacuum pump of an electric vehicle and the vehicle. The control method comprises the steps that the pressure of the vacuum pump at the current moment is detected; if the pressure of the vacuum pump at the current moment is larger than a closing pressure threshold value, the vacuum pump is closed; if the pressure of the vacuum pumpdetected within the first preset duration including the current moment is not larger than the closing pressure threshold value, it is determined that leakage happens to the vacuum pump; the pressure of the vacuum pump at the current moment is compared with a leakage threshold value, and the leakage level of the vacuum pump is determined according to the comparison result; and a corresponding protection operation is executed according to the leakage level. By means of the control strategy, whether the vacuum pump leaks or not can be effectively judged, corresponding protection operation can beexecuted according to the leakage level under the leakage condition, the situation that the vacuum pump is damaged due to the fact that the vacuum pump still works for a long time under the leakage condition is avoided, and the traveling braking safety is improved.
本公开涉及一种电动车辆真空泵的控制方法及装置和控制系统、车辆,所述控制方法包括检测所述真空泵当前时刻的压力;若所述真空泵当前时刻的压力大于关闭压力阈值,则关闭所述真空泵;若在包括所述当前时刻的第一预设时长内检测到的所述真空泵的压力均不大于所述关闭压力阈值,确定所述真空泵发生泄漏;将所述真空泵当前时刻的压力与泄漏阈值进行比较,根据比较结果确定所述真空泵的泄漏等级;根据所述泄漏等级执行相应的保护操作。通过上述的控制策略可以有效地判断出真空泵是否出现泄漏的情况,并且在出现泄漏情况下可以根据泄漏等级执行相应的保护操作,避免在真空泵出现泄漏的情况下仍长时间工作而导致真空泵损坏,提高行车制动的安全性。
Control method, device and system for vacuum pump of electric vehicle and vehicle
一种电动车辆真空泵的控制方法及装置和控制系统、车辆
2020-12-18
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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