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Electric vehicle and its insulation detection method, device and system

A technology for electric vehicles and test results, applied in measurement devices, high resistance measurement, measurement of electrical variables, etc., can solve problems such as damage to high-voltage components, electric shocks, etc., to improve safety, avoid manual insulation detection, and simplify insulation. The effect of the detection process

Inactive Publication Date: 2020-12-11
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An embodiment of the present invention provides an electric vehicle and its insulation detection method, device and system to at least solve the problem that the existing electric vehicle insulation detection method is to detect the insulation resistance of the electric vehicle through the battery management system after the high voltage is applied to the electric vehicle , technical problems that easily lead to electric shock and damage to high-voltage components

Method used

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  • Electric vehicle and its insulation detection method, device and system
  • Electric vehicle and its insulation detection method, device and system

Examples

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Embodiment 1

[0028] According to an embodiment of the present invention, an embodiment of an insulation detection method for an electric vehicle is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0029] figure 1 It is a flow chart of an insulation detection method for an electric vehicle according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0030] Step S102, receiving a closing instruction sent by the diagnostic instrument, wherein the closing instruction is used to instruct to close the first relay or the second relay inside the battery pack of the electric vehicle.

[0031] Specifically, the above-mentioned...

Embodiment 2

[0087] According to an embodiment of the present invention, an embodiment of an insulation detection device for an electric vehicle is provided.

[0088] Figure 4 is a schematic diagram of an insulation detection device for an electric vehicle according to an embodiment of the present invention, such as Figure 4 As shown, the device includes:

[0089] The first receiving module 41 is configured to receive a closing instruction sent by the diagnostic instrument, wherein the closing instruction is used to instruct to close the first relay or the second relay inside the battery pack of the electric vehicle.

[0090] Specifically, the above-mentioned first relay can be the main positive relay inside the battery pack; the above-mentioned second relay can be the main negative relay inside the battery pack, such as figure 2 shown.

[0091] In an alternative, such as figure 2 As shown, in the ON state, the main positive relay and the main negative relay inside the battery pack...

Embodiment 3

[0125] According to an embodiment of the present invention, an embodiment of an insulation detection system for an electric vehicle is provided.

[0126] Figure 5 is a schematic diagram of an insulation detection system for an electric vehicle according to an embodiment of the present invention, such as Figure 5 As shown, the system includes:

[0127] The diagnostic instrument 51 is configured to send a closing instruction, wherein the closing instruction is used to instruct to close the first relay or the second relay inside the battery pack of the electric vehicle.

[0128] Specifically, the above-mentioned first relay can be the main positive relay inside the battery pack; the above-mentioned second relay can be the main negative relay inside the battery pack, such as figure 2 shown.

[0129] In an alternative, such as figure 2 As shown, in the ON state, the main positive relay and the main negative relay inside the battery pack are in the disconnected state. When t...

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Abstract

The invention discloses an electric vehicle, an insulation detection method, an apparatus and a system thereof. The method comprises the following steps of receiving a closing instruction sent by a diagnostic apparatus, wherein the closing instruction is used for indicating to close a first relay or a second relay in a battery pack of the electric vehicle; after the closing instruction is executed, reading a corresponding resistance value of the first relay or the second relay after being closed; detecting whether the corresponding resistance value satisfies a preset insulation condition and acquiring an insulation detection result; returning the insulation detection result to the diagnostic apparatus. By using an existing insulation detection method of the electric vehicle, after a high voltage is applied to the electric vehicle, through a cell management system, an insulation resistance of the electric vehicle is detected so that a person can easily get an electric shock and a high voltage component is easily damaged. In the invention, the above technical problems are solved.

Description

technical field [0001] The present invention relates to the field of electric vehicles, in particular to an electric vehicle and its insulation detection method, device and system. Background technique [0002] After the whole vehicle is off the assembly line, in order to prevent personnel from electric shock and high-voltage components from being damaged due to insulation failure, it is necessary to pass the vehicle insulation test, and perform the high-voltage operation after confirming that there is no insulation failure. The insulation test of the whole vehicle can be carried out by manual insulation. This method needs to disconnect the high-voltage connector after the assembly of the whole vehicle is completed, and then restore the original vehicle state after testing. The operation is cumbersome and complicated, and the working hours are long. [0003] The battery management system (BMS, short for Battery Management System) inside the battery pack has an insulation dia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12G01R27/02
CPCG01R27/025G01R31/12
Inventor 宋宗南侯晓翔
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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