Overheat protection device of electric stern door motor of automobile

Abstract

The invention discloses an overheat protection device of an electric stern door motor of an automobile. The overheat protection device comprises a master control module, a temperature monitoring module and a driving module, wherein the temperature monitoring module and the driving module are connected with the master control module, the driving module is connected with the motor in an automobile stern door control system, the temperature monitoring module is used for monitoring a temperature signal of the motor during the running process and sending the temperature signal to the master controlmodule, and the master control module is used for judging a corresponding temperature state according to the received temperature signal, controlling the driving module to drive the motor to stop running when overheat temperature state is judged and controlling the driving module to drive the motor to recovery rotation when a normal temperature state is judged to be recovered. The overheat protection device has the advantages of simple structure, low cost, rapid response speed, high intelligence, safety, reliability and the like.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an overheat protection device for an electric tailgate motor of an automobile. Background technique [0002] At present, all new energy vehicles use electric tailgates, which control the automatic opening or closing of the tailgates by electronic control or remote control, which greatly improves the convenience of automobile use. During the use of the electric tailgate of the car, the electric control or remote control sends the command to open or close the tailgate of the car. After receiving the command, the strut motor runs at high speed to drive the movement of the strut to realize the automatic opening and closing of the tailgate of the car. It is easy to cause motor overheating failure, which will make the strut unable to work and affect the normal use of the electric tailgate of the car. [0003] For the overheating protection of the electric tailgate motor of automob...

AI Technical Summary

Problems solved by technology

During the use of the electric tailgate of the car, the electric control or remote control sends the command to open or close the tailgate of the car. After receiving the command, the strut motor runs at high speed to drive the movement of the strut to realize the automatic opening and closing of the tailgate of the car. It is easy to cause motor overheating failure, which will make the strut unable to work and affect the normal use of the electric tailgate of the car

[0003] For the overheating protection of the electric tailgate motor of automobiles, at present, it is usually realized by simply arranging a thermostat, that is, the temperature of the strut motor is monitored through the thermostat, but the protection performance of a single thermostat is not good. It will make the strut unable to work and cannot ensure the stability and reliability of the electric tailgate of the car

The traditional motor overheat protection circuit is either complicated to implement, large in size and weight, and high in cost, which is not suitable for automotive electric tailgate motors with limited layout space; Usually, the motor is manually restored after the fault is removed. It needs to rely on manual operation. The degree of intelligence is not high, and it will still affect the normal use of the electric tailgate.

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