Electric power assisting device for automobile brake system

Abstract

The invention provides an electric power assisting device for an automobile brake system and belongs to the technical field of vehicles. The electric power assisting device solves the technical problems of poor brake flexibility, poor stability and the like of the existing electromagnetic power assisting device. The electric power assisting device for the automobile brake system comprises a first electromagnetic coil and a second electromagnetic coil, wherein the first electromagnetic coil is fixedly arranged on a push rod, the second electromagnetic coil is fixedly arranged on an automobile fixing element, one electrode of the second electromagnetic coil corresponds to one electrode of the first electromagnetic coil, an electronic sensing unit capable of sensing the action state of a brake pedal is also arranged on the automobile fixing element, the electronic sensing unit is connected with an electronic control unit (ECU), and the ECU is electrically connected with the coil of the first electromagnetic coil and the coil of the second electromagnetic coil and can control the electrification states of the coil of the first electromagnetic coil and the coil of the second electromagnetic coil according to the brake pedal action state sensed by an electronic triggering control mechanism. The electric power assisting device ensures that the force exerted on the pedal by drivers is uniform regardless of the length of the brake stroke, and simultaneously, the electric power assisting device has the advantages that the controllability is high, the brake power assisting effect is stable, and the like.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and relates to a new energy vehicle, in particular to an electric booster device for a vehicle braking system. Background technique [0002] Automobile refers to a vehicle driven by its own equipment; generally has four or more wheels, and does not rely on rails or wires to drive on land. A car includes components such as the body, drive system, and brake system. [0003] At present, traditional cars are generally driven by internal combustion engines, and petroleum is a non-renewable energy source, and burning petroleum will also pollute the environment. In order to solve the energy crisis and environmental pollution problems, the development of new energy-driven vehicles has become the general trend. [0004] There is a vacuum booster device in the braking system of the vehicle driven by the internal combustion engine, and the vacuum source of the vacuum booster device comes from the intake ...

AI Technical Summary

Problems solved by technology

Although the brake booster has the advantages of reduced space occupation and compact structure, it also has certain defects.

1. Although permanent magnets are used, the conditions in the car power booster are relatively complicated, so the magnetism of the permanent magnets will gradually fade away; thus gradually reducing the power boosting effect

2. A permanent magnet is installed in the car booster, and the magnet's strong magnetism produces electromagnetic interference, which will affect the normal operation of the electronic control and accessories.

3. The car often needs to brake when driving, so the return spring is stretched back and forth, which is easy to cause mechanical fatigue, resulting in a decrease in the elasticity of the return spring, which in turn reduces the boosting effect gradually

4. When braking, the spring is compressed, and this structure also causes the force applied by the driver to increase with the increase of the braking stroke, thereby reducing the flexibility and stability of braking

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