Anti-slope-sliding function control method and system for electric vehicle

An electric vehicle, power control technology, applied in electric vehicles, control drives, control devices, etc., to prevent slippage and solve the problem of slippage at the start of the ramp

Pending Publication Date: 2020-12-25
CHERY COMML VEHICLE ANHUI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to realize a solution to the electric vehicle equipped with HHC, the accelerator pedal is not stepped on after 1 to 2 seconds after the brake pedal is released, the problem of ve

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  • Anti-slope-sliding function control method and system for electric vehicle
  • Anti-slope-sliding function control method and system for electric vehicle
  • Anti-slope-sliding function control method and system for electric vehicle

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Embodiment Construction

[0046] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0047] Name abbreviation and function of each device among the present invention:

[0048] VCU: vehicle controller, collects the information and fault status of each controller, and sends anti-slope entry and exit instructions in combination with the control strategy;

[0049] MCU: motor controller, which receives the anti-slope signal and feeds back information such as speed, torque, temperature of ...

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Abstract

The invention discloses an anti-slope-sliding function control method for an electric vehicle. The anti-slope-sliding function control method comprises the following steps that S1, when it is judged that the vehicle is on a slope and the current vehicle is static on the slope, an anti-slope-sliding function is entered to execute the next step; S2, when it is judged that the vehicle is currently inthe slope sliding state, the next step is executed; S3, the VCU sends an anti-slope-sliding signal to the MCU, and the VCU requests the motor torque to be reset; and S4, the MCU calculates PI parameters needing to be executed currently, and the output torque of the motor is adjusted according to the PI parameters. The anti-slope-sliding function control method and system are compatible with the electric vehicle with the HHC, the electric vehicle is further protected after the HHC exits, slope sliding is prevented, and the problem of slope sliding during slope starting of the electric vehiclewithout the HHC can also be solved.

Description

technical field [0001] The invention relates to a complete vehicle controller of an electric vehicle, in particular to a technology for preventing the vehicle from rolling when the vehicle starts on a slope. Background technique [0002] Along with social development, people's living standard improves, and there are more and more vehicles on the road, which brings inconvenience to vehicles. It is more common for vehicles to slip on slopes. At present, some electric vehicles will be equipped with HHC to start on the slope. [0003] Existing HHC functions are based on the slope sensor and electronic brake system. Specifically, when the slope sensor judges that the slope is uphill and the gear position is in the D gear (forward gear), or the sensor judges that it is downhill and the transmission is in the R gear (reverse gear), When the brake pedal is released, the brake pressure is maintained for 1 to 2 seconds for a brake delay, and the brake pressure is released when the ac...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/2081B60L2240/423Y02T10/72
Inventor 王开洋项南军刘昭才
Owner CHERY COMML VEHICLE ANHUI
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