Electric vehicle and its ground short circuit detection device
A short-circuit to ground and electric vehicle technology, which is applied in the field of vehicles, can solve problems such as electric shock to the human body, short-circuit between the high-voltage system and the car frame, and achieve the effect of avoiding short-circuit and ensuring safe use
Active Publication Date: 2021-11-05
安庆威灵汽车部件有限公司 +2
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Problems solved by technology
[0003] However, the problem with related technologies is that during the use of the whole vehicle, if the vehicle ages, or in some special environments, the insulation drops, etc., it is very likely to cause a short circuit between the high-voltage system and the vehicle frame, thus causing human body damage. Safety hazards such as electric shock
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Embodiment Construction
[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0031] The following describes an electric vehicle and a ground-short circuit detection device according to an embodiment of the present invention with reference to the accompanying drawings.
[0032] figure 1 It is a schematic block diagram of a short-to-ground detection device for an electric vehicle according to an embodiment of the present invention.
[0033] Such as figure 1 As shown, the short-to-ground detection device 100 for an electric vehicle includes: a capacitor assembly 1 and a control unit 2 .
[0034] Specifica...
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The present invention proposes an electric vehicle and its ground-to-ground short-circuit detection device, wherein the device includes: a capacitor component, the capacitor component includes a filter circuit and a detection circuit, the detection circuit is connected to the filter circuit, and the filter circuit is connected to the non-ground circuit of the electric vehicle. The capacitance value of the capacitor component changes according to the ground short circuit of the non-ground circuit; the control unit is connected to the detection circuit, and the control unit is used to determine the capacitance value of the capacitor component, and determine the non-ground voltage of the electric vehicle according to the capacitance value of the capacitor component. Whether the ground circuit is shorted to ground. Therefore, the control unit is connected to the detection circuit, and the capacitance value of the capacitor component is determined, and whether the non-ground circuit of the electric vehicle is short-circuited to the ground is determined according to the capacitance value of the capacitor component, thereby avoiding short-circuit of the non-ground circuit and ensuring the safety of the user. Safe to use.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to a ground-to-ground short-circuit detection device for an electric vehicle and an electric vehicle. Background technique [0002] At present, in electric vehicles and hybrid vehicles, dual power supplies (low-voltage system and high-voltage system) are usually used for power supply. Among them, the voltage of the low-voltage system is generally 12V, and the negative pole of the power supply of the low-voltage system is connected to the frame of the vehicle, that is, the nearest ground Connect to realize safety control and some car functions; the voltage of the high-voltage system is generally 80V or 300V, and it is completely isolated from the low-voltage system. [0003] However, the problem with related technologies is that during the use of the whole vehicle, if the vehicle ages, or in some special environments, the insulation drops, etc., it is very likely to cause a short ci...
Claims
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IPC IPC(8): G01R31/52B60L3/00
CPCB60L3/00
Inventor 郑绪成
Owner 安庆威灵汽车部件有限公司