UDS protocol-based new energy vehicle insulation fault troubleshooting system
An insulation fault and new energy technology, applied in the field of new energy vehicle insulation fault troubleshooting system, can solve problems such as hidden safety hazards and heavy workload, and achieve the effect of ensuring safe operation, reducing the risk of high-voltage electric shock, and reducing troubleshooting time.
Pending Publication Date: 2022-05-10
DONGFENG COMML VEHICLE CO LTD
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Problems solved by technology
The maintenance personnel of this patent need to manually check the high-voltage line to find the fault point, the workload is heavy, and there are potential safety hazards
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[0028] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0029] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device o...
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The invention discloses a new energy whole vehicle insulation fault troubleshooting system based on a UDS protocol. The system comprises a power battery system used for providing high-voltage electricity for a main drive loop and an auxiliary drive loop; the main drive loop is connected between the power battery anode contactor and the power battery cathode contactor; the auxiliary driving loop is connected between the power battery anode contactor and the power battery cathode contactor; the power battery management system communicates with the diagnostic apparatus through a UDS protocol and is used for carrying out insulation fault checking after receiving the fault checking signal; controlling a contactor for disconnecting the high-voltage loop, the main drive loop and the auxiliary drive loop, collecting an insulation resistance value, judging an insulation fault point according to the insulation resistance value, and sending the insulation fault point to a diagnostic instrument; and the diagnostic instrument is used for sending a troubleshooting signal to the power battery management system after receiving the insulation troubleshooting enable signal. According to the invention, maintenance personnel can be helped to quickly lock fault points, troubleshooting time is reduced, high-voltage electric shock risks are reduced, and safe operation of vehicles is ensured as much as possible.
Description
technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a UDS protocol-based new energy vehicle insulation fault troubleshooting system. Background technique [0002] New energy vehicles have broad prospects for development and will inevitably become the main means of transportation in the future world. New energy vehicles are widely considered to be one of the main ways to solve problems such as vehicle exhaust pollution and oil energy shortages. With the improvement of technology, market popularity and rapid development of new energy vehicles, the product performance, reliability, and Safety also puts forward higher and higher requirements. [0003] Pure electric vehicles are equipped with high-energy, high-capacity, and high-voltage power batteries. In order to ensure the safety of the driver, the battery management system must have an insulation detection function; however, the current mainstream insulation detect...
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IPC IPC(8): G01R31/00G01R31/12G01R27/02
CPCG01R31/006G01R31/1227G01R27/025
Inventor 冯永杰马彪王华武李春东
Owner DONGFENG COMML VEHICLE CO LTD