Control method and system for discharging of vehicle high-voltage system

A technology of a high-voltage system and a control method, applied in the control field, can solve the problems of high-voltage system in-vehicle user threats and insufficient safety.

Inactive Publication Date: 2018-05-11
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another purpose of the present invention is to solve the traditional problem that there is a large amount of energy in the high-voltage system that threatens the users in the car by directly cutting of

Method used

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  • Control method and system for discharging of vehicle high-voltage system
  • Control method and system for discharging of vehicle high-voltage system
  • Control method and system for discharging of vehicle high-voltage system

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Embodiment Construction

[0043] figure 1 It is a schematic flow of a control method for high-voltage system discharge according to an embodiment of the present invention, used to realize the discharge of energy in the high-voltage system of a vehicle, and the control method may include:

[0044] S100. Sending a power-off command;

[0045] S200. Disconnect the relay according to the power-off command, record the voltage difference between the two ends of the relay and calculate the disconnection time of the relay;

[0046] S300. Sending a relay disconnection command;

[0047] S400. Receive a relay disconnection command and make the high voltage system actively discharge;

[0048] S500. Comparing the voltage difference between the two ends of the relay with a preset voltage value, so as to determine whether the high-voltage system is successfully discharged according to the comparison result.

[0049]The control method of the present invention can first control the disconnection of the relay by sendi...

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Abstract

The invention provides a control method and system for discharging of a vehicle high-voltage system, and relates to the control field. The control method is used for achieving discharging of energy ofthe vehicle high-voltage system, and comprises the steps of sending a power outage instruction, disconnecting a relay according to the power outage instruction, recording the voltage difference of the two ends of the relay and calculating the disconnecting time of the relay, sending the disconnecting instruction of the relay, receiving the disconnecting instruction of the relay and enabling the high-voltage system to actively discharge, and comparing the discharging difference of the two ends of the relay with a preset voltage value to determine whether the high-voltage system discharges successfully or not. The control system comprises a vehicle controller, a battery management system and a motor controller. The control method and system for discharging of the vehicle high-voltage systemsolve the energy discharging problem of the vehicle high-voltage system.

Description

technical field [0001] The invention relates to the technical field of control, in particular to a control method and a control system for discharging a high-voltage system of a vehicle. Background technique [0002] With the reduction of fossil fuels and the intensification of environmental pollution, new energy vehicles are becoming more and more sought after by the society, and the subsequent safety issues have also attracted consumers' attention. The main safety issue of new energy vehicles is the safety of high-voltage systems - batteries, motors. When designing a motor controller, in order to ensure its overall performance, there will be a large number of high-voltage capacitors inside. These capacitors have a high voltage level and a large capacity. There are serious potential safety hazards for the whole vehicle, especially in the process of vehicle maintenance and repair, the safety problem of the high-voltage system is very prominent. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60L15/20B60L15/22
CPCB60L3/0023B60L3/0046B60L15/20B60L15/22Y02T10/72
Inventor 孙磊
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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