Electric Power Steering System
A technology of electric power steering and power steering pump, which is applied in the field of steering systems, can solve problems such as potential safety hazards, high overall cost, and insulation problems in double-winding motors, and achieve the effects of improving reliability, avoiding potential safety hazards, and reducing costs
Active Publication Date: 2017-09-26
玉柴芯蓝新能源动力科技有限公司
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- Application Information
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Problems solved by technology
Due to the use of double-winding motors, two motor controllers are required, so the overall cost is relatively high, and there are insulation problems in the double-winding motors, which have certain potential safety hazards
Method used
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[0023] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0024] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0025] Such as figure 1 As shown, an electric power steering system according to a specific embodiment of the present invention provides auxiliary force for the steering system of a vehicle through a power steering pump. During normal operation, the high-voltage power supply is electrically connected to the power steering pump to drive the power steering pump. The electric power steering system of the present invention is...
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The invention discloses an electric power steering system. The electric power steering system comprises a steering power pump, a high-voltage power supply, a blocking diode, a booster, a low-voltage power supply and a voltage monitoring and controlling system, wherein the high-voltage power supply is used for driving the steering power pump; the blocking diode allows electric currents between the high-voltage power supply and the steering power pump to pass through; the booster is electrically connected with the steering power pump; the voltage monitoring and controlling system comprises a voltage monitor, a complete vehicle controller and a controller, wherein the voltage monitor is used for monitoring a voltage between the high-voltage power supply and the steering power pump so as to obtain a first voltage value; the complete vehicle controller is used for monitoring the voltage between the high-voltage power supply and the steering power pump so as to obtain a second voltage value; when the first voltage value or the second voltage value is smaller than a pre-set voltage value, the controller gives out an enable signal to the booster, and the booster raises the voltage provided by the low-voltage power supply to the working voltage of the steering power pump so as to drive the steering power pump. According to the electric power steering system disclosed by the invention, when a high-voltage failure or line failure appears, the normal work of the steering pump can be maintained within a definite time.
Description
technical field [0001] The invention relates to a steering system of an electric vehicle, in particular to an electric power steering system. Background technique [0002] A vehicle such as a motor vehicle may be equipped with an electric power steering system that generates an assist torque that assists a steering torque generated by a driver operating a steering wheel. By generating assist torque and assisting the driver's steering, the burden on the driver can be reduced. [0003] In the prior art, the types of electric power steering systems and the existing problems are as follows: [0004] 1. Single high-voltage steering pump type: a single high-voltage motor is used as the driving motor of the steering pump, that is, the high-voltage power supply provides power for the motor and then drives the steering pump. During the driving process of the vehicle, when the high-voltage power supply fails or the line fails, or some other failures cause the power management system...
Claims
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IPC IPC(8): B62D5/04
CPCB62D5/0475
Inventor 欧阳石坤王兵杰张松潘俊毛正松王东栋余大中李培辉陈红权林海
Owner 玉柴芯蓝新能源动力科技有限公司