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High-voltage interlocking troubleshooting system for electric automobile

A technology of high-voltage interlocking and electric vehicles, which is applied to electric vehicles, electrical devices, vehicle components, etc., can solve problems such as failures that cannot be eliminated, and the vehicle is not allowed to drive, so as to speed up the investigation time and maintenance time, and reduce the positioning range , The effect of simple circuit structure

Active Publication Date: 2021-09-07
CHERY COMML VEHICLE ANHUI
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AI Technical Summary

Problems solved by technology

[0005] The high-voltage interlock fault is the first-level fault level of the whole vehicle. The fault cannot be eliminated, and the whole vehicle is not allowed to drive
With so many high-voltage components in the whole vehicle, and each component has multiple high-voltage connectors, when looking for interlock faults, it is necessary to perform plug-in detection one by one, which is time-consuming and cannot better deduce the cause of the problem.

Method used

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  • High-voltage interlocking troubleshooting system for electric automobile

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Embodiment Construction

[0017] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0018] Such as figure 1 A high-voltage interlock fault troubleshooting system for electric vehicles is shown, including multi-level high-voltage interlock circuits. Each high-voltage interlock circuit is composed of multiple high-voltage devices connected in series through low-voltage interlock wiring harnesses. The high-voltage interlock circuits are set for The indicator circuit that turns on or off according to the state of high voltage interlock.

[0019] The high-voltage interlock circuit includes a high-voltage interlock primary circuit, which is the interlock contact of the connector from the battery pack to the high-voltage power distribution box, the vehicle charger and the motor controller, and the high-voltage interlock circuit for opening the cover .

[0020] The high-voltage ...

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Abstract

The invention discloses a high-voltage interlocking troubleshooting system for an electric automobile. The system comprises a plurality of stages of high-voltage interlocking loops, each stage of high-voltage interlocking loop is formed by connecting a plurality of high-voltage devices in series through a low-voltage interlocking wire harness, and the high-voltage interlocking loop is provided with an indicator light circuit which is used for lightening or not according to a high-voltage interlocking state. The system has the advantages that the system is simple and reliable, the position of the interlocking fault or the corresponding interlocking fault loop can be rapidly judged according to the on-off state of the light-emitting indicator light, the positioning range of the interlocking loop can be rapidly narrowed, and the position of the interlocking fault can be determined in time.

Description

technical field [0001] The invention relates to the field of high-voltage interlocking of electric vehicles, in particular to an electric vehicle high-voltage interlocking troubleshooting system and method thereof. Background technique [0002] With the rapid development of the economy, the market share of new energy electric vehicles has gradually increased, and the high-voltage electrical equipment or power supply equipment of new energy vehicles has been vigorously developed. [0003] Compared with traditional vehicles, new energy electric vehicles have added high-voltage components such as power batteries, motor controllers, motors, DC / DC and chargers. The start-up conditions of these devices are high-voltage electricity as the power source, and the voltage value at this time will cause great harm to the human body, so high-voltage protection in electric vehicles is very important. [0004] In order to improve the safety of electric vehicles, a high-voltage interlock sc...

Claims

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Application Information

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IPC IPC(8): B60L3/00
CPCB60L3/0023
Inventor 李武袁中谢玉梅何俊王振邹沙沙梁宇航丁卓承俊
Owner CHERY COMML VEHICLE ANHUI
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