An electric vacuum pump overheat protection control method, system and terminal
An electric vacuum pump, overheating protection technology, applied in the direction of brake safety system, brake, brake transmission, etc., to prevent fuse from blowing, ensure normal operation, and avoid continuous braking without power assistance
Active Publication Date: 2021-05-14
ZHEJIANG GEELY HLDG GRP CO LTD +1
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Problems solved by technology
[0005] The purpose of the present invention is to provide an electric vacuum pump overheat protection control method, system and terminal for the current conventional electric vacuum pump control method, so as to solve the problems raised in the above-mentioned background technology
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[0053] figure 1 It is a schematic flowchart of an electric vacuum pump overheat protection control method provided by an embodiment of the present invention. This specification provides the method operation steps as described in the embodiment or flowchart, but based on routine or non-creative work, it may include more or more Fewer operating steps. The sequence of steps enumerated in the embodiments is only one of the execution sequences of many steps, and does not represent the only execution sequence. When an actual system or server product is executed, the methods shown in the embodiments or drawings may be executed sequentially or in parallel (for example, in a parallel processor or multi-thread processing environment). Specifically as figure 1 As shown, the method may include:
[0054] S101: Monitor whether the continuous working time of the electric vacuum pump reaches the overheating protection time;
[0055] Existing electric vacuum pumps, such as vane electric va...
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The invention discloses an overheat protection control method for an electric vacuum pump. The overheat protection control method includes: monitoring whether the continuous working time of the electric vacuum pump reaches the overheat protection time; if so, acquiring the brake pedal signal of the vehicle, and the brake pedal signal Characterize the braking demand of the vehicle; control the electric vacuum pump to enter the degraded working mode according to the brake pedal signal; monitor whether the working current of the electric vacuum pump in the degraded working mode is greater than or equal to the safe current threshold; if so, control The electric vacuum pump enters the current protection working mode. The technical solution provided by the invention can effectively prevent the overheating of the vacuum pump from affecting its life, ensure that the electric vacuum pump can continue to work according to the braking demand, and avoid the problem of continuous braking without power assistance, so as to satisfy the braking safety as the primary factor and ensure the vacuum to the maximum extent. The system components are operating normally, so as to ensure the safe driving of the vehicle.
Description
technical field [0001] The invention relates to the technical field of automobile braking, in particular to an electric vacuum pump overheat protection control method, system and terminal. Background technique [0002] With the state's support for new energy vehicles, the electric vehicle market has shown explosive growth, but there are many problems behind the rapid growth, such as the braking system. The vacuum boosting effect of the braking system is related to the driving safety of the car. Different from traditional fuel vehicles, electric vehicles are driven by motors, which cancel the traditional engine, so they lose the source of vacuum, that is, they cannot provide vacuum boosting for the brake master cylinder of the car. Vacuum pumps can make up for this deficiency, providing a reliable source of vacuum for the braking systems of various models such as electric vehicles and hybrid vehicles, thereby effectively improving the braking performance of the entire vehicle...
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IPC IPC(8): B60T17/22B60T13/52
CPCB60T13/52B60T17/22
Inventor 李航吴海军张波波张敬玉于东辉
Owner ZHEJIANG GEELY HLDG GRP CO LTD