System and method for keeping power-assisted steering under power off state of electric vehicle

A technology for power-assisted steering and electric vehicles, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc. It can solve the problems of vehicle loss, accidental injury to the driver's hand, safety accidents, etc., and achieve the goal of avoiding various accidents and accidents damage effect

A technology for power-assisted steering and electric vehicles, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc. It can solve the problems of vehicle loss, accidental injury to the driver's hand, safety accidents, etc., and achieve the goal of avoiding various accidents and accidents damage effect

CN107444485AInactive Publication Date: 2017-12-08ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • System and method for keeping power-assisted steering under power off state of electric vehicle
  • System and method for keeping power-assisted steering under power off state of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the embodiment of the present invention provides a system for maintaining power steering when the electric vehicle is powered off, and the system includes a vehicle controller 1, a remote monitoring backup controller 2, a power battery 3, a steering motor controller 4 and a steering motor 5 , the remote monitoring standby controller 2 is signal-connected to the vehicle controller 1 and the steering motor controller 4, and the power battery 3 is sequentially connected to the steering motor controller 4 and the steering motor 5 , when working, the vehicle controller 1 is used to detect the vehicle state, and transmit the vehicle state to the remote monitoring standby controller 2;

[0033] The remote monitoring backup controller 2 sends a control signal to the steering motor controller 4 according to the vehicle state, and the remote monitoring backup controller 2 controls the power battery 3 to output a high level to the steering motor controll...

Embodiment 2

[0037] Such as figure 2 As shown, an embodiment of the present invention provides a method for maintaining power steering in an electric vehicle, the method includes:

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Abstract

The invention discloses a system and method for keeping power-assisted steering under a power off state of an electric vehicle. The system comprises a vehicle controller, a remote monitoring standby controller, a power battery, a steering motor controller and a steering motor. When the vehicle loses the high level suddenly or is powered off in the running process, the remote monitoring standby controller can be started for usage immediately, the remote monitoring standby controller controls the power battery to output the high level to the steering motor controller, and a control signal is sent to the steering motor controller through the remote monitoring standby controller so that the high level can be output to the steering motor through the steering motor controller, thus the steering motor can continue working and providing assistance to ensure power-assisted steering, therefore a steering wheel can rotate normally, it is ensured that the driver can have enough time to handle with an emergent situation, accidental injuries can be avoided, and meanwhile, happening of various kinds of accidents can be avoided, and operation of the electric vehicle is safer.

Description

technical field [0001] The invention relates to the field of power steering of electric vehicles, in particular to a system and method for maintaining power steering of an electric vehicle when the power is turned off. Background technique [0002] Steering system is an important safety component of a vehicle. Without power steering, the driving direction of the vehicle will be difficult to control, which is likely to cause safety accidents. The same is true for electric vehicles. Traditional fuel vehicles are divided into hydraulic steering and electric steering, while the power steering of electric vehicles They are all electric steering, and small-tonnage electric vehicles directly drive the steering pump through low-voltage electricity to achieve steering assistance. Large-tonnage electric vehicles directly drive the steering motor at a high level. [0003] The power steering of traditional large-tonnage electric vehicles (electric trucks, electric buses) generally driv...

Claims

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Application Information

Patent Timeline
08 Dec 2017
Publication
CN107444485A
IPC
B62D5/04
CPC
B62D5/0463
Inventors
张茂飞; 李文杰