An eps-based power supply control and diagnosis protection system and control method

A protection system and power control technology, applied in the direction of emergency protection circuit devices, electrical components, circuit devices, etc., can solve the problems of failure to meet the requirements of safety protection functions, single design of diagnostic methods, and few power supply output voltage circuits, etc., to achieve safety performance Guarantee, good reliability, effect of ensuring safety and reliability

Active Publication Date: 2021-12-17
ZHUZHOU ELITE ELECTRO MECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few output voltage circuits of the power supply, a single design of diagnostic methods, and the design of detection circuits and other aspects still have certain deficiencies, which cannot meet the functional requirements of safety protection at the present stage.

Method used

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  • An eps-based power supply control and diagnosis protection system and control method
  • An eps-based power supply control and diagnosis protection system and control method
  • An eps-based power supply control and diagnosis protection system and control method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides an EPS-based power supply control and diagnosis protection system, including a power supply module, an ignition circuit, and an MCU module. In this embodiment, the MCU module is an MCU chip, which is used for programming control and diagnosis processing of various signals of the power supply, but is not limited to this function.

[0043] Such as figure 1 As shown, the power module includes an input power processing module for boosting and stabilizing an external battery power supply, an output power detection module, a diagnostic protection module, and a multi-channel power output module and a multi-channel diagnostic output module connected to the diagnostic protection module. , SPI communication module, and watchdog power module; the input power processing module is connected to the multi-channel power output module and the diagnosis protection module to provide power for them; the output power detection module performs overvoltage / undervoltag...

Embodiment 2

[0063] The difference between this embodiment and Embodiment 1 is that it also includes a soft-start power supply circuit connected to the MCU chip.

[0064] Such as Figure 5As shown, the soft start control is generated by the MCU chip according to the ignition signal, and is connected to the base of the band-stop transistor V704; the emitter of the transistor V704 is connected to the ground, and the collector is connected to the resistor R711; the resistor R711 is connected to the transistor The base of V703 is connected; the collector of the triode V703 is connected to +12V, and the emitter is connected to the resistor R712 at the same time; The contacts 3 and 4 are connected to form the load output of the soft start circuit.

[0065] The design of the soft-start power supply circuit in this embodiment is simplified, and the voltage of the relay is gradually increased from zero to the rated voltage, so that the starting current of the relay during the action process is cha...

Embodiment 3

[0068] Such as Figure 12 As shown, the difference between this embodiment and Embodiment 2 is that it also includes a relay signal control circuit with safety protection.

[0069] Relay signal control circuit such as Figure 6 , the relay signal control is the PWM signal sent by the MCU chip, which is connected to the capacitor C050; the capacitor C050 is connected in series with the resistor R050 to 5V, and is connected to the base of the triode V050; the emitter of the triode V050 is connected to 5V; the triode The collector of V050 is grounded in series with capacitor C051, and connected to resistor R051 at the same time; the resistor R051 is connected in series with capacitor C052, grounded, and connected to the base of triode V051 at the same time; the emitter of triode V051 is grounded, and the collector is connected in series with resistor R052 The base of the triode V052 is connected afterwards; the emitter of the triode V052 is connected with the filtered power supp...

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Abstract

The invention relates to the field of power supply control, and discloses an EPS-based power supply control, diagnosis and protection system and a control method. The system includes a power supply module, an ignition circuit, and an MCU module; the power supply module includes an input power processing module for boosting and stabilizing an external battery power supply, an output power detection module, a diagnostic protection module, and multiple devices connected to the diagnostic protection module. Road power output module, multi-channel diagnostic output module, SPI communication module; the input power processing module is respectively connected with multi-channel power output module and diagnostic protection module to provide power for them; the SPI communication module is connected to the diagnostic protection module, summarizing The fault and status are output to the MCU module through the SPI communication module; the ignition circuit shown includes an ignition input unit for external ignition signals, an ignition holding unit, and an ignition processing unit that outputs EPS power-on signals. The invention can realize multi-channel power supply output, various diagnostic signals, high reliability and good safety performance.

Description

technical field [0001] The present invention relates to the technical field of power supply control, and more specifically, to an EPS-based power supply control, diagnosis and protection system and control method. Background technique [0002] Electric power steering system, also known as electric power steering, referred to as EPS, is widely used in classic cars and ordinary cars, which can improve the handling stability and convenience of cars. It uses the battery as the energy source, the motor as the power, the rotation speed and torque of the steering wheel and the vehicle speed as the input signal, assists the human steering through the electronic control device, and obtains the servo system with the best steering force characteristics. [0003] The electric control part of the EPS system is mainly composed of a torque sensor, an electronic control unit, and a motor. The system power supply provides a stable voltage through the battery to output voltage suitable for t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/32H02M1/36H02H7/22H02H1/00B60R16/03B62D5/04
CPCH02H1/0007H02H7/222H02M1/32H02M1/36B62D5/04B60R16/03
Inventor 聂李石广林丁伟娜
Owner ZHUZHOU ELITE ELECTRO MECHANICAL
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