Hill descent control system of pure electric vehicle and control method thereof

A pure electric vehicle and vehicle controller technology, applied in the direction of brakes, etc., can solve problems such as lack of flexibility, and achieve the effects of improving vehicle safety, reducing burden, and avoiding thermal failure

Active Publication Date: 2015-03-25
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, because the speed set by traditional vehicles is generally a fixed value, th

Method used

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  • Hill descent control system of pure electric vehicle and control method thereof
  • Hill descent control system of pure electric vehicle and control method thereof

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Embodiment Construction

[0023] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] like figure 1 The steep slope descent system of a pure electric vehicle shown includes a vehicle signal unit, a steep slope descent unit, a vehicle controller 7, an anti-lock brake system 6, a drive motor 9 and an active braking unit, and the vehicle signal unit , the steep slope descent unit and the brake anti-lock braking system 6 are respectively connected to the vehicle controller 7, the vehicle controller 7 is connected to the driving motor 9 through the motor controller 8, and the vehicle controller 7 is also connected to an active brake unit; where:

[0025] The vehicle signal unit includes a gear shifter 1, a brake pedal 2 and an accelerator pedal 3, the gear shifter 1, the brake pedal 2 and the accelerator pedal 3 are respectively connected with the vehicle controller 7, and the gear position signal,...

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Abstract

The invention provides a hill descent control system of a pure electric vehicle and a control method of the hill descent control system. The hill descent control system comprises a vehicle signal unit, a hill descent unit, a vehicle control unit, an anti-lock braking system, a driving motor and an active brake unit. The vehicle signal unit, the hill descent unit and the anti-lock braking system are connected with the vehicle control unit. The vehicle control unit is connected to the driving motor through a motor controller. The vehicle control unit is also connected with the active brake unit. According to the hill descent control system, different slopes correspond to different vehicle speed intervals, and preferably the motor is used for generating power and recovering energy; especially down a slope along a long ramp, the burden of the braking system is relieved, and potential accidents caused by thermal failure due to an overheated brake are eliminated.

Description

technical field [0001] The invention relates to the field of complete vehicle control of pure electric vehicles, in particular to a steep slope descent system and a control method for pure electric vehicles. Background technique [0002] The basic principle of the steep slope descent function of traditional engine models is to combine the engine brake and the ABS system to keep the vehicle at a low speed when going down a steep slope without losing the grip of the tires. Speed ​​driving status. Taking the Land Rover car series as an example, the upper limit speed set for steep slope descent is 9km / h. However, the application of this function in traditional models is complicated to control and difficult to calibrate. A large amount of calibration costs need to be invested in the mass production of models, which increases the cost of vehicle manufacturing. [0003] For pure electric vehicles, most of which are single-stage reducer mechanisms, gear shift control is not involv...

Claims

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Application Information

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IPC IPC(8): B60T8/58
CPCB60T8/58
Inventor 柯南极朱波王可峰曹琛
Owner BEIJING ELECTRIC VEHICLE
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