Hill-hold control system of electric vehicle

A technology for control systems and electric vehicles, applied in the direction of electric vehicles, control drives, control devices, etc., can solve the problems of passenger discomfort, unstable acceleration process, etc., and achieve the effect of comfortable feeling, stable acceleration process, and avoid failure to start

Pending Publication Date: 2017-09-29
东风特汽(十堰)专用车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the electric vehicle in the prior art does not actively calculate the driving force during the acceleration process, but only drives the motor according to the accelerator signal, and then collects the vehicle speed for closed-loop feedback, which makes the acceleration process unstable and easily causes discomfort to passengers

Method used

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  • Hill-hold control system of electric vehicle
  • Hill-hold control system of electric vehicle

Examples

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Embodiment 1

[0043] Such as figure 1 As shown, the standing slope control system of Embodiment 1 includes a front axle suspension stroke measuring device, a slope angle measurement module, a vehicle speed acquisition module, a brake pedal, an accelerator pedal, a rear axle suspension stroke measuring device, a vehicle controller, and a motor Controller, motor and other components; the system can be applied to 4.5T pure electric direct-drive logistics vehicles.

[0044] Among them, there are two front axle suspension stroke measuring devices, which are respectively installed directly above the suspensions of the two front wheels of the electric vehicle, and the output end is connected to the first input end of the vehicle controller. There are two rear axle suspension stroke measuring devices. One, respectively installed directly above the suspension of the two rear wheels of the electric vehicle, the output end is connected to the second input end of the vehicle controller; the front axle ...

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PUM

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Abstract

The invention discloses a hill-hold control system of an electric vehicle. The system comprises a slope module, a vehicle speed module, a brake module, an accelerator module and a controller; the output end of the slope module is connected with a first input end of the controller, the output end of the vehicle speed module is connected with a second input end of the controller, the output end of the brake module is connected with a third input end of the controller, and the output end of the accelerator module is connected with a fourth input end of the controller; the slope module is used for obtaining slope signals of a road, the vehicle speed module is used for obtaining vehicle speed signals, the brake module is used for obtaining brake signals, the accelerator module is used for accelerator signals, the controller is used for obtaining the operating mode of the electric vehicle according to the road slope and the vehicle speed, obtaining accelerating signals according to the accelerator signals at the same time, and outputting the brake signals and the accelerating signals when the operating mode is a hill-hold start mode.

Description

technical field [0001] The invention belongs to the field of electric vehicle control, and more particularly relates to a parking slope control system of an electric vehicle. Background technique [0002] The traditional parking start completely depends on the driver's manual operation, and the direct drive electric vehicle will give priority to the brake in order to prevent the accelerator and brake from being effective at the same time, that is, the brake is effective while the accelerator is invalid. The above strategy optimizes the driving safety, but causes difficulties for the semi-linked operation of starting on a slope. [0003] The starting operation on a standing slope is complicated, the driving force is difficult to grasp, and the dangerous situation of slippery slope and insufficient driving force is prone to occur. Moreover, the electric logistics vehicle has a large load range, and the required driving force changes exponentially between no-load and full-load...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/2081B60L2240/12B60L2240/10B60L2240/642Y02T10/72
Inventor 杨情超李世斌毛涛汪刚李昌泉祝东鑫齐健申
Owner 东风特汽(十堰)专用车有限公司
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