Device for preventing reverse power generation of automobile tail door motor and automobile
By collecting voltage signals in the electric tailgate control system and controlling the conduction of the full bridge circuit, the problem of damage to the Mos tube caused by reverse power generation of the motor is solved, and the safe braking of the motor and the protection of controller components are realized.
CN222638155UActive Publication Date: 2025-03-18ZHEJIANG GEELY HLDG GRP CO LTD +1
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Patent Information
- Application Number
- CN202420355000.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-02-27
AI Technical Summary
Technical Problem
When the electric tailgate is closed, the motor may generate power in reverse, causing damage to the full-bridge drive mos tube on the controller circuit board, causing complaints and claims from customers.
Method used
By collecting the voltage signals of the power storage power supply and the base power supply, the microcontroller unit controls the shutdown circuit to disconnect, and conducts the two lower bridges of the full bridge circuit through the pre-drive chip, which can achieve the effect of motor braking and avoid high voltage damaging the controller components.
Benefits of technology
It effectively prevents high voltage damage caused by reverse power generation of the motor, and improves product reliability and customer satisfaction.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a device for preventing reverse power generation of an automobile tail door motor and a vehicle. The device comprises a reverse power generation prevention circuit, a turn-off circuit, a sampling circuit, a micro-control unit, a pre-drive chip and a full-bridge circuit. The anti-reverse circuit is electrically connected with the storage power supply and the base power supply respectively, the turn-off circuit is electrically connected with the anti-reverse circuit, the sampling circuit comprises a storage sampling circuit and a base sampling circuit, and the storage sampling circuit and the base sampling circuit are connected with the storage power supply and the base power supply respectively. The micro-control unit is respectively connected with the power storage sampling circuit and the base sampling circuit, meanwhile, the micro-control unit is electrically connected with the turn-off circuit, the pre-drive chip is electrically connected with the micro-control unit, and the full-bridge circuit is respectively and electrically connected with the base power supply, the pre-drive chip and the motor. According to the device for preventing reverse power generation of the automobile tail door motor and the vehicle, the problem that a circuit of a full-bridge mos tube is prone to being burnt out under the high-voltage condition can be solved.
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