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A Torque Control Method for Pure Electric Vehicles to Prevent Rolling After Slope

A pure electric vehicle and torque control technology, applied in the field of electric control system control of new energy vehicles, can solve problems such as slopes and slopes

Active Publication Date: 2015-11-18
深蓝汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is a torque control method for pure electric vehicles to prevent backward slippage. The purpose is to solve the problem of slope rise and fall through a more advanced control method without changing the structure of the braking system.

Method used

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  • A Torque Control Method for Pure Electric Vehicles to Prevent Rolling After Slope
  • A Torque Control Method for Pure Electric Vehicles to Prevent Rolling After Slope
  • A Torque Control Method for Pure Electric Vehicles to Prevent Rolling After Slope

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Embodiment Construction

[0017] The following is attached figure 1 , figure 2 and image 3 Describe in detail the specific implementation process of the present invention:

[0018] see figure 1 , it can be seen from the control system diagram of the electric vehicle to prevent the slope from slipping, the vehicle controller obtains corresponding signals from the ABS controller, the accelerator pedal, the brake pedal, and the shift handle from various sensors, and then Through the following judgment and calculation method, finally send the motor torque command to the motor controller to control the operation of the motor.

[0019] see figure 1 and image 3 , the specific control steps are as follows:

[0020] 1. The vehicle controller (VCU) first judges whether the state of the vehicle should enter the anti-slip state according to the accelerator pedal opening, brake pedal information, gear information, motor speed, vehicle speed provided by ABS, and vehicle fault status. Slope control mode, an...

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Abstract

A torque control method for preventing backward slipping of a blade electric vehicle on a slope comprises the steps of first simulating the low-speed creeping process of a traditional car, wherein the speed of a controlled target on a ramp or a plain road is 8km / h; utilizing closed-loop PI control, calibrating P and I parameters at different motor rotating speeds, accordingly enabling the electric vehicle to obtain torque required by driving when a brake pedal is loosened within 0.3s, rapidly achieving ideal driving vehicle speed and avoiding the backward slipping after a driver loosens a brake.

Description

technical field [0001] The invention belongs to the control field of electric control systems of new energy vehicles, and relates to a torque control method for new energy vehicles. Background technique [0002] In the 21st century, the global climate is gradually warming, oil prices are rising, and oil resources are exhausted. Energy-saving and low-carbon travel has gradually become the consensus of people. New energy vehicles are effective measures to alleviate energy pressure and reduce environmental pollution. With the popularization of new energy vehicles, in addition to the role of vehicles in transportation, the comfort performance of vehicles is more pursued. Most new energy vehicles adopt the motor and single-stage reducer scheme, so that the resistance of the transmission system is smaller than that of the traditional car engine and multi-stage reducer; the energy storage device of the electric vehicle is a battery pack, resulting in the weight of the electric vehi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCY02T10/72
Inventor 冯超刘宇王艳静
Owner 深蓝汽车科技有限公司
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