A kind of eps controller power supply diagnosis and protection system and method
A protection system and control method technology, applied in the direction of automatically disconnected emergency protection devices, emergency protection circuit devices, electrical components, etc., can solve problems such as safety risks, lack of detection and protection mechanisms, and existing safety risks, so as to reduce safety risk effect
Active Publication Date: 2020-05-05
湖南东嘉智能科技有限公司
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Problems solved by technology
As a safety component on a vehicle, EPS has the highest safety level requirements, but the current EPS power-assisted motor has certain safety risks in its power control
The traditional method is to control the power switch of the EPS through a relay. This method lacks a detection and protection mechanism. Once a fault occurs, it is prone to circuit ablation or motor damage, which poses a safety risk.
Method used
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[0027] The present invention will be further described below in combination with specific embodiments.
[0028] An EPS controller power supply diagnosis and protection system includes a power supply, a processing control module, a monitoring module, an LC filter module, a power switch module, and a charging / discharging module.
[0029] The processing control module 12 is a single-chip microcomputer of the nxp series model mpc5604p, and the output terminals are respectively connected with the power supply voltage monitoring circuit 6, the load voltage monitoring circuit 10, the power switch control circuit 7, the charging circuit 81, and the discharging circuit 82 to control their work.
[0030] The power supply module 1 is responsible for providing power for the entire system; the surge absorbing circuit 5 is connected in parallel with the power supply 1 and grounded to provide bidirectional surge protection and overvoltage protection for the power supply.
[0031] In the LC f...
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The invention provides a power supply diagnosis and protection system for an EPS controller. The system comprises a power supply module, a processing control module, a surge absorbing circuit, a monitoring module, an LC filtering module, a power switch module and a charge / discharge module. The system is used for an on-off function of a path between a power supply and a load, the voltage, the current and the temperature of the load during working can be monitored in real time, and once the voltage, the current and the temperature of the load exceed a threshold value, the processing control module controls a power switch device to be turned off to protect the power supply and the load; and meanwhile, the system can also realize self-diagnosis of the power switch device. In addition, according to a control method applying the system, a detection and protection mechanism is added, and the safety risk is greatly reduced. By means of the system and method, reliability and safety of an EPS power supply under extreme conditions are improved.
Description
technical field [0001] The present invention relates to the technical field of automobile electric power steering system, and more specifically, relates to a power supply diagnosis and protection system of an EPS controller. Background technique [0002] At present, the electric electronic control steering system widely adopts the electric power steering system, referred to as EPS, which directly relies on the motor to provide auxiliary torque. As a safety component on a vehicle, EPS has the highest safety level requirements, but the current EPS power-assisted motor has certain safety risks in its power control. The traditional method is to control the power switch of the EPS through a relay. This method lacks a detection and protection mechanism. Once a fault occurs, it is prone to circuit ablation or motor damage, which poses a safety risk. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose an EPS controller powe...
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IPC IPC(8): H02H3/00H02H5/04
CPCH02H3/00H02H5/04H02H5/041
Inventor 林联伟刘锴吕莹焦九顺
Owner 湖南东嘉智能科技有限公司