A high-voltage system fault detection method and device
A high-voltage system, fault detection technology, applied in electrical devices, transportation and packaging, electric vehicles, etc., can solve problems such as the inability to reliably ensure vehicle safety, and achieve the effect of reasonable control strategies and safety assurance
Active Publication Date: 2017-09-05
WEICHAI POWER CO LTD
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Problems solved by technology
However, for a running electric vehicle, if only fault detection and alarm are performed, the safety of the vehicle cannot be reliably guaranteed.
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[0067] In order to make the purpose, technical means and technical effects of the present invention more clear and complete, the specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.
[0068] It should be noted that the technical solution provided by the present invention is for the safety of electric vehicles, therefore, the high-voltage system fault detection method provided by the present invention is applicable to the field of electric vehicles.
[0069] figure 1 It is a schematic diagram of the structure of the high-voltage system of an electric vehicle. Such as figure 1 shown. The high-voltage system includes a power battery 101 and a high-voltage distribution box 102. The high-voltage distribution box 102 is used as a vehicle energy distribution unit for distributing the electric energy output by the power supply to various electric energy transmission lines. figure 1 The high-voltage system sh...
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The invention discloses a high-voltage system fault detection method. A high-voltage system comprises at least one electric energy transmission circuit. A fuse is arranged on each electric energy transmission circuit. The method comprises the steps that detected states of the fuses are obtained; according to the states of the fuses, whether the electric energy transmission circuits where the fuses are arranged break down or not is judged; and when the electric energy transmission circuits break down, a whole vehicle is controlled according to preset control strategies corresponding to the electric energy transmission circuits so as to ensure the safety of the vehicle. According to the high-voltage system fault detection method, the control strategies corresponding to the electric energy transmission circuits are matched with the electric energy transmission circuits, refining control is performed for the different electric energy transmission circuits by adopting the different control strategies, and the control strategies of the whole vehicle are more reasonable and user-friendly. In addition, the invention further provides a high-voltage system fault detection device.
Description
technical field [0001] The invention relates to the field of fault detection of electric vehicles, in particular to a fault detection method and device for a high-voltage system of electric vehicles. Background technique [0002] An electric vehicle refers to a vehicle powered by a vehicle-mounted power supply, using electric energy to drive the wheels, and meeting the requirements of road traffic and safety regulations. [0003] In order to ensure the safety of electric vehicles, it is necessary to perform fault detection on the high-voltage system inside the electric vehicle. [0004] The detection method of the high-voltage system in the prior art can detect the location of the fault and can send an alarm to the outside when the fault is detected. However, for a running electric vehicle, the safety of the vehicle cannot be reliably guaranteed if only faults are detected and alarmed. Contents of the invention [0005] In view of this, the present invention provides a h...
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IPC IPC(8): B60L3/00B60L15/00B60L15/28
CPCY02T10/72
Inventor 王宏宇台述鹏潘凤文刘信奎
Owner WEICHAI POWER CO LTD