Parking control system used for electric automobile

Abstract

The invention discloses a parking control system used for an electric automobile. The parking control system comprises a P-gear parking ECU, an electronic parking ECU, an EPB backup ECU and an EPB executer used for controlling a pair of calipers to act. Both the electronic parking ECU and the EPB backup ECU can control the EPB executer, the priority of control conducted by the electronic parking ECU on the EPB executer is larger than the priority of control conducted by the EPB backup ECU, the EPB backup ECU only controls the EPB executer when the electronic parking ECU reports an error or sends no signal, a driver executes a P-gear parking action and a wheel speed signal is not zero, and the electric automobile is parked. P-gear parking has an actual effect, double parking guarantees of P-gear parking and a hand brake are achieved, so that the P-gear parking reliability and safety are improved, and the risks of traffic accidents caused by parking failure are reduced.

Description

technical field [0001] The invention relates to an electric vehicle, in particular to a parking system for the electric vehicle. Background technique [0002] Different from the P-block parking in traditional internal combustion vehicles, which is realized by the mechanical locking device in the gearbox, the P-block mechanical locking device is canceled in the gearboxes of most electric vehicles, but the P-block parking is still retained in electric vehicles. The gear position, the parking function of the P gear of the electric vehicle is actually performed by the EPB. Once the EPB controller fails, the vehicle will not be able to realize the parking function, making the setting of the P gear of the electric vehicle meaningless, and may cause traffic accidents , endangering the safety of drivers and passengers. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a parking control system for electric vehicles, which ...

AI Technical Summary

Problems solved by technology

[0002] Different from the P-block parking in traditional internal combustion vehicles, which is realized by the mechanical locking device in the gearbox, the P-block mechanical locking device is canceled in the gearboxes of most electric vehicles, but the P-block parking is still retained in electric vehicles. The gear position, the parking function of the P gear of the electric vehicle is actually performed by the EPB. Once the EPB controller fails, the vehicle will not be able to realize the parking function, making the setting of the P gear of the electric vehicle meaningless, and may cause traffic accidents , endangering the safety of drivers and passengers

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