Pure electric vehicle automatic parking control method

Abstract

The invention discloses an automatic parking control method of a pure electric vehicle. A vehicle control unit (VCU) receives various signals of the vehicle, performs logic judgment on different working conditions and controls a hydraulic braking system, a motor control unit (MCU) and a parking pawl driving device as well as instrument information display and P on / off light display. The control method is divided into an uphill control mode, a downhill control mode, a flat-road control mode and a parking control mode. The automatic parking control method of the pure electric vehicle is capable of automatically applying appropriate braking force to the four wheels of the vehicle on a slope or at an intersection for green light, and locking a transmission by use of a parking pawl. When the vehicle starts, the braking force is controlled to be released and the locking of the transmission is cancelled in proper time, and therefore, the automatic parking function is realized and traffic accidents can be avoided. While the functional requirements are met, the vehicle weight is reduced and the vehicle manufacturing cost is reduced.

Description

technical field [0001] The invention relates to an automatic parking control method of a pure electric vehicle. Background technique [0002] The pure electric vehicle is considered to be the development direction of the automobile industry, and its green design is the source of the sustainable development of the automobile industry. The national new energy industry plan has raised pure electric vehicles to a strategic development level, and major automobile companies in various countries are paying attention to the research and development and industrialization of pure electric vehicles. [0003] At present, there are few models that apply automatic parking devices in the field of pure electric vehicles, but more applications are used in traditional high-end models, which are basically based on the electronically controlled parking brake system in the electronic parking brake system to achieve automatic parking Features. By receiving the clutch position signal, the automa...

AI Technical Summary

Problems solved by technology

In the existing automatic parking scheme, due to the limitation of the need to add an additional electronically controlled parking brake device, and the core technology is monopolized by a small number of parts suppliers, the manufacturing cost of vehicles equipped with automatic parking functions has increased significantly. This is also one of the reasons for the current market performance that the automatic parking function is only equipped on high-end models.

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