Electric vacuum pump control system for electric vehicle

Abstract

The invention discloses an electric vacuum pump control system for an electric vehicle. The electric vacuum pump control system includes a storage battery, a relay and an electric vacuum pump, an ignition switch is connected between the storage battery and the relay in series, the electric vacuum pump is connected with a temperature sensor and a humidity sensor, and an ECU is connected with an alarming device; and the electric vacuum pump is connected with a vacuum energy storage barrel, the vacuum energy storage barrel is connected with a vacuum degree sensor, the vacuum degree sensor is connected with the ECU, and the ECU is electrically connected with the relay. According to the electric vacuum pump control system, the defect in the prior art is overcome, when the temperature or humidity reaches a certain value, the relay is controlled by the ECU to stop the electric vacuum pump, and a temperature alarming device or a humidity alarming device is controlled to start an alarm; and thevacuum degree and transmitted signals of the vehicle speed and pedal speed are combined through the ECU, thus calculation is conducted, when the vacuum degree is high, the ECU controls the relay to stop the electric vacuum pump, thus the electric vacuum pump is not damaged due to operation for a long time, and the effect of energy conservation is also achieved.

Description

technical field [0001] The invention relates to the application field of electric vacuum pumps for automobiles, in particular to a control system for electric vacuum pumps for electric automobiles. Background technique [0002] With the increasingly prominent energy crisis and environmental problems, electric vehicles have attracted the attention of the whole country and even the world. The braking system of pure electric vehicles plays an extremely important role in the driving process of the vehicle. The electric vacuum booster system consists of an electric vacuum pump, a vacuum tank and a controller. The electric vacuum pump is a component assembly that must be added to avoid the loss of the vacuum source of the vacuum booster system of the braking system after the engine is cancelled. It is powered by electricity and can provide a reliable and sufficient vacuum source for the vacuum assist system. [0003] Most of the existing electric vehicles use electric vacuum pum...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing electric vehicles use electric vacuum pumps to work continuously to evacuate the vacuum until the driver turns off the ignition switch with a key, and then the electric vacuum pumps stop working, so that the electric vacuum pumps not only consume the power of the battery in the electric vehicle, but also shorten the life of the battery. The service life of the electric vacuum pump is shortened; and when the air with high humidity enters the vacuum pump and runs for a long time in the vacuum pump, the high temperature of the vacuum pump burns down, resulting in a safety accident

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