CN113049992A - Detection method and system for high-voltage connector of vehicle and vehicle - Google Patents
Detection method and system for high-voltage connector of vehicle and vehicle Download PDFInfo
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- CN113049992A CN113049992A CN201911367044.7A CN201911367044A CN113049992A CN 113049992 A CN113049992 A CN 113049992A CN 201911367044 A CN201911367044 A CN 201911367044A CN 113049992 A CN113049992 A CN 113049992A
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- voltage connector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
Abstract
The application provides a detection method and system for a high-voltage connector of a vehicle and the vehicle. Wherein, the detecting system of the high-pressure connector of vehicle includes: vibration detection means for detecting a plurality of vibration signals of a plurality of high-voltage connectors in a vehicle; the insulation detection device is used for detecting the insulation resistance of the high-voltage connector; and the data acquisition card is used for sending an early warning signal when judging that the high-voltage connector with the amplitude larger than the preset amplitude exists according to the vibration signals, controlling the insulation detection device to detect the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude, and determining whether the high-voltage connector is abnormal according to the insulation resistance. The application discloses detection system of high voltage connector of vehicle can accurately detect out the vibration information and the insulation resistance value of a plurality of high voltage connector to send warning information to whole car when unusual, the suggestion is stopped and is overhauld, can also determine the high voltage connector that takes place unusually, and then, promotes maintenance efficiency.
Description
Technical Field
The present application relates to the field of vehicle technologies, and in particular, to a method and a system for detecting a high-voltage connector of a vehicle, and a vehicle.
Background
For vehicles with high-voltage systems, such as pure electric vehicles, the high-voltage connector is widely applied to power transmission of the vehicles, and the performance of the high-voltage connector is related to the reliability of the operation of the whole high-voltage system. In the related technology, the high-voltage connector is usually provided with a secondary locking device and a high-voltage interlocking device, and when the high-voltage connector vibrates in an overlarge amplitude to cause the connector to fall off, the whole vehicle is powered off at high voltage.
The following technical problems exist: this kind of high voltage connector with secondary locking and high-pressure interlock just forces the vehicle to go down high-voltage electricity when falling completely usually, but because the reason that whole car high-voltage electricity was pressed is many, consequently, can not judge fast whether be because the vibration of high voltage connector drops and cause, in addition, even know to be because the vibration of high voltage connector drops and cause, because the high voltage connector is many, still need investigate each high voltage connector one by one, consequently, the troubleshooting inefficiency.
Disclosure of Invention
The present application is directed to solving at least one of the above problems.
To this end, an object of the present application is to propose a detection system of a high-voltage connector of a vehicle. The system can accurately detect the vibration information and the insulation resistance value of the high-voltage connectors, sends warning information to the whole vehicle when the vibration information and the insulation resistance value are abnormal, prompts parking maintenance, can also determine the high-voltage connectors which are abnormal, and further improves maintenance efficiency.
A second object of the present application is to propose a method of testing a high-voltage connector of a vehicle.
A third object of the present application is to propose a vehicle.
In order to achieve the above object, a first aspect of the present application discloses a detection system of a high-voltage connector of a vehicle, comprising: vibration detection means for detecting a plurality of vibration signals of a plurality of high-voltage connectors in a vehicle; the insulation detection device is used for detecting the insulation resistance of the high-voltage connector; and the data acquisition card is used for sending an early warning signal when judging that the high-voltage connector with the amplitude larger than the preset amplitude exists according to the vibration signals, controlling the insulation detection device to detect the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude, and determining whether the high-voltage connector is abnormal according to the insulation resistance.
According to the detection system of the high voltage connector of vehicle of this application, can accurately detect out the vibration information and the insulation resistance value of a plurality of high voltage connector, when the vibration surpassed the extreme value of connecting high voltage connector and insulation resistance is less than standard resistance value, can send warning information to whole car, the suggestion is stopped and is overhauld to can determine the high voltage connector that takes place unusually, and then, promote maintenance efficiency.
In some examples, further comprising: the signal processor, the vibration detection device pass through the signal processor with the data acquisition card links to each other, the signal processor has a plurality of passageways to respectively through a plurality of passageways to the data acquisition card sends a plurality of vibration signals of a plurality of high voltage connector, the signal processor is used for right the vibration detection device detects a plurality of vibration signals amplify.
In some examples, the data acquisition card includes a CAN communication interface and a serial port, and the data acquisition card sends the warning signal to a vehicle controller through the CAN communication interface and communicates with the insulation detection device through the serial port, so as to control the insulation detection device to detect the insulation resistance of the high-voltage connector with the amplitude larger than the predetermined amplitude through the serial port, and acquire the insulation resistance of the high-voltage connector with the amplitude larger than the predetermined amplitude through the serial port.
In some examples, the data acquisition card is configured to determine whether there is a risk of water inflow or oil contamination in the corresponding high-voltage connector according to the insulation resistance of the high-voltage connector whose amplitude is greater than the predetermined amplitude, and send information for repairing or replacing the high-voltage connector whose amplitude is greater than the predetermined amplitude when it is determined that there is a risk of water inflow or oil contamination.
In some examples, further comprising: and the multi-path switching circuit is connected with the insulation detection device, and the insulation detection device selects the high-voltage connector with the amplitude larger than the preset amplitude through the multi-path switching circuit so as to detect the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude.
In some examples, the multiplexing switching circuit includes a multiplexing switch.
In some examples, the vibration detection device includes a plurality of acceleration sensors.
A second aspect of the present application discloses a detection method of a high-voltage connector of a vehicle, including: detecting a plurality of vibration signals of a plurality of high voltage connectors in a vehicle; judging whether a high-voltage connector with amplitude larger than a preset amplitude exists according to the vibration signals; if so, sending an early warning signal, and detecting the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude; and determining whether the high-voltage connector is abnormal or not according to the insulation resistance.
According to the detection method of the high-voltage connector of the vehicle, the vibration information and the insulation resistance values of the high-voltage connectors can be accurately detected, when the vibration exceeds the limit value of the connection high-voltage connector and the insulation resistance value is smaller than the standard resistance value, warning information can be sent to the whole vehicle to prompt parking maintenance, the abnormal high-voltage connector can be determined, and therefore the maintenance efficiency is improved.
In some examples, the determining whether the high voltage connector is abnormal according to the insulation resistance includes: if the insulation resistance is smaller than a preset value, the corresponding high-voltage connector is judged to have water inlet or oil stain risks; and sending information for repairing or replacing the high-voltage connector with the amplitude larger than the preset amplitude.
A third aspect of the present application discloses a vehicle characterized by comprising: the detection system for a high-voltage connector of a vehicle according to the first aspect described above. This vehicle can accurately detect out the vibration information and the insulation resistance value of a plurality of high voltage connector, when the vibration surpassed the extreme value of connecting high voltage connector and insulation resistance is less than the standard resistance value, can send warning information to whole car, the suggestion maintenance of stopping to can determine the high voltage connector who takes place unusually, and then, promote maintenance efficiency.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a detection system for a high voltage connector of a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic view of a detection system for a high voltage connector of a vehicle according to one embodiment of the present application;
fig. 3 is a flowchart of a method for detecting a high-voltage connector of a vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes a detection method and system for a high-voltage connector of a vehicle and the vehicle according to an embodiment of the application with reference to the accompanying drawings.
Fig. 1 is a block diagram of a detection system of a high-voltage connector of a vehicle according to an embodiment of the present application. As shown in fig. 1, a detection system 100 for a high voltage connector of a vehicle according to an embodiment of the present application includes: a vibration detection device 110, an insulation detection device 120 and a data acquisition card 130.
The vibration detection device 110 is used for detecting a plurality of vibration signals of a plurality of high-voltage connectors in a vehicle. The insulation detection device 120 is used to detect the insulation resistance of the high-voltage connector. The data acquisition card 130 is configured to send an early warning signal when it is determined that there is a high-voltage connector with an amplitude greater than a predetermined amplitude according to the plurality of vibration signals, control the insulation detection device 120 to detect the insulation resistance of the high-voltage connector with an amplitude greater than the predetermined amplitude, and determine whether the high-voltage connector is abnormal according to the insulation resistance.
In a specific example, the vibration detection device 110 includes, for example, a plurality of acceleration sensors, which correspond one-to-one to the plurality of high-voltage connectors, and thus, can detect vibration signals of the corresponding high-voltage connectors. As shown in fig. 2, a vibration detecting apparatus 110 including two acceleration sensors is shown. The acceleration sensor may detect acceleration when the high-voltage connector vibrates, and thus may use the acceleration as a vibration signal.
In specific application, the vibration signals are collected by an YD-36 piezoelectric acceleration sensor, the sensitivity of the vibration signals is 7pC/g, the frequency response range is 1-5000 Hz, and the measuring range is +/-200 g. And the high-voltage connector and the plate-end plastic shell can be fastened by adopting bolts.
As shown in fig. 2, the detection system 100 for high-voltage connectors further includes: the signal processor 140, the vibration detection device 110 is connected to the data acquisition card 130 through the signal processor 140, the signal processor 140 has a plurality of channels, so as to send a plurality of vibration signals of the plurality of high voltage connectors to the data acquisition card 130 through the plurality of channels, respectively, and the signal processor 140 is configured to amplify the plurality of vibration signals detected by the vibration detection device 110.
That is, the signal processor 140 has a plurality of input interfaces, and may receive the vibration signals detected by the plurality of acceleration sensors through the plurality of input interfaces, respectively. Accordingly, the data acquisition card 130 can determine which high voltage connector vibration signal is detected.
In a specific application, the signal processor 140 may employ a DHF-8 multi-channel charge amplifier, namely: the YD-36 piezoelectric acceleration sensor is connected with the data acquisition card 130 through the DHF-8 multi-channel charge amplifier.
As shown in fig. 2, the data acquisition card 130 includes a CAN communication interface and a serial port, the data acquisition card 130 sends the warning signal to the vehicle controller through the CAN communication interface, and communicates with the insulation detection device through the serial port (i.e., serial port communication), so as to control the insulation detection device 120 to detect the insulation resistance of the high-voltage connector with the amplitude larger than the predetermined amplitude through the serial port, and acquire the insulation resistance of the high-voltage connector with the amplitude larger than the predetermined amplitude through the serial port.
Further, the data acquisition card 130 is configured to determine whether there is a risk of water inflow or oil contamination in the corresponding high-voltage connector according to the insulation resistance of the high-voltage connector whose amplitude is greater than the predetermined amplitude, and send information for repairing or replacing the high-voltage connector whose amplitude is greater than the predetermined amplitude when it is determined that there is a risk of water inflow or oil contamination.
Specifically, the data acquisition card adopts PCI-6221, which has 16 analog inputs, a sampling rate as high as 250kS/s, 2 analog outputs and 24I/O interfaces, and a single-channel sampling frequency of 250kS/s, thereby meeting the design requirements of the scheme. The PC-6221 is installed in a PCI slot of an industrial personal computer, all interfaces of the PCI-6221 are led out through a cable and a CB-37F-HVD junction box and connected with a vehicle controller, and a data acquisition card is a core control element for data acquisition and early warning, namely: when a certain high-voltage connector or a plurality of high-voltage connectors have overlarge vibration amplitude, the whole vehicle controller can give an early warning. Wherein, too large vibration amplitude generally means exceeding the limit vibration amplitude of the high-voltage connector, and the limit vibration amplitude can be determined by calibration in advance.
Referring to fig. 2, the detection system for a high voltage connector further includes: a multi-switching circuit 150, wherein the multi-switching circuit 150 is connected to the insulation detection device 120, and the insulation detection device 120 selects the high voltage connector with the amplitude larger than the predetermined amplitude through the multi-switching circuit to detect the insulation resistance of the high voltage connector with the amplitude larger than the predetermined amplitude. In a specific example, the multiplexing switching circuit includes a multiplexing switch.
For example: the multichannel switching circuit 150 can scan and detect the insulation resistance of the multichannel high-voltage connector, for example, an 8-way relay switch circuit is adopted to select a test channel by an insulation tester. An IRPVT522 solid-state optical microelectronic relay is adopted, the maximum load voltage is +/-500 VDC/AC, and the switching response time is 2 ms. The internal integration photoelectric converter drives, and the input and output are isolated photoelectrically, belonging to a double-stage and normally open relay. 3-channel DO of the PCI-6221 data acquisition card is used as an input signal of the control circuit, the control circuit uses 1 2/4 decoder 74LS139 to switch the on/off state of 8-channel PVT522 relays, and the insulation tester is enabled to be conducted to a plurality of channel measurement loops in a circulating mode. The connector which detects the undersize insulation voltage is fed back to the data acquisition system to realize communication with the whole vehicle; KRM9520 insulation tester is selected for use, and KRM9520 tester is a device for testing insulation resistance of components and equipment. And (3) detecting the abnormal condition of the test line by using a constant voltage test method with the minimum test period of 50ms, and calibrating an RS232C interface.
In the design of a detection system of a high-voltage connector of a vehicle, an acceleration sensor is connected to the plate end of the connector through a bolt to detect the vibration condition of the connector; the acceleration sensor is connected with a signal collecting and processing device through a low-voltage plug-in, and the signal collecting and processing device consists of a signal processor, a data acquisition card, serial communication, an insulation tester and a multi-path switching circuit; the insulation tester, the multi-path switching circuit and the data acquisition card realize two-way communication, the insulation test of a connector assembly of each channel is realized, the data acquisition card acquires the parameters of connector vibration and insulation resistance, and when the vibration amplitude exceeds a limit or the insulation resistance is lower than a standard value, the data acquisition card interacts with the whole vehicle controller through CAN communication to send out warning information.
According to the detection system of the high voltage connector of vehicle of this application embodiment, can accurately detect out the vibration information and the insulation resistance value of a plurality of high voltage connector, when the vibration surpassed the extreme value of connecting high voltage connector and insulation resistance is less than standard resistance value, can send warning information to whole car, the suggestion maintenance of parking to can determine the high voltage connector that takes place unusually, and then, promote maintenance efficiency.
Fig. 3 is a flow chart of a method of detecting a high voltage connector of a vehicle according to one embodiment of the present application. As shown in fig. 3, a method for detecting a high voltage connector of a vehicle according to an embodiment of the present application includes:
s301: detecting a plurality of vibration signals of a plurality of high voltage connectors in a vehicle;
s302: judging whether a high-voltage connector with amplitude larger than a preset amplitude exists according to the vibration signals;
s303: if so, sending an early warning signal, and detecting the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude;
s304: and determining whether the high-voltage connector is abnormal or not according to the insulation resistance.
Further, the determining whether the high-voltage connector is abnormal according to the insulation resistance includes:
if the insulation resistance is smaller than a preset value, the corresponding high-voltage connector is judged to have water inlet or oil stain risks; and sending information for repairing or replacing the high-voltage connector with the amplitude larger than the preset amplitude.
According to the detection method of the high-voltage connector of the vehicle, the vibration information and the insulation resistance values of the high-voltage connectors can be accurately detected, when the vibration exceeds the limit value of the connection high-voltage connectors and the insulation resistance is smaller than the standard resistance value, warning information can be sent to the whole vehicle to prompt parking maintenance, the abnormal high-voltage connectors can be determined, and therefore maintenance efficiency is improved.
In addition, a specific implementation manner of the detection method for the high-voltage connector of the vehicle according to the embodiment of the present application is similar to a specific implementation manner of the detection system for the high-voltage connector of the vehicle according to the embodiment of the present application, and please refer to the description of the method portion specifically, which is not described herein again.
Further, an embodiment of the present application discloses a vehicle, including: the detection system for a high-voltage connector of a vehicle according to any one of the above embodiments. This vehicle can accurately detect out the vibration information and the insulation resistance value of a plurality of high voltage connector, when the vibration surpassed the extreme value of connecting high voltage connector and insulation resistance is less than the standard resistance value, can send warning information to whole car, the suggestion maintenance of stopping to can determine the high voltage connector who takes place unusually, and then, promote maintenance efficiency. The vehicle is an electric automobile or a hybrid vehicle with a high-voltage system.
In addition, other configurations and functions of the vehicle according to the embodiment of the present application are known to those skilled in the art, and are not described herein.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A detection system for a high-voltage connector of a vehicle, comprising:
vibration detection means for detecting a plurality of vibration signals of a plurality of high-voltage connectors in a vehicle;
the insulation detection device is used for detecting the insulation resistance of the high-voltage connector;
and the data acquisition card is used for sending an early warning signal when judging that the high-voltage connector with the amplitude larger than the preset amplitude exists according to the vibration signals, controlling the insulation detection device to detect the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude, and determining whether the high-voltage connector is abnormal according to the insulation resistance.
2. The detection system for a high-voltage connector of a vehicle according to claim 1, further comprising:
the signal processor, the vibration detection device pass through the signal processor with the data acquisition card links to each other, the signal processor has a plurality of passageways to respectively through a plurality of passageways to the data acquisition card sends a plurality of vibration signals of a plurality of high voltage connector, the signal processor is used for right the vibration detection device detects a plurality of vibration signals amplify.
3. The system of claim 1, wherein the data acquisition card comprises a CAN communication interface and a serial port, the data acquisition card sends the warning signal to a vehicle controller through the CAN communication interface, and communicates with the insulation detection device through the serial port, so as to control the insulation detection device to detect the insulation resistance of the high voltage connector with the amplitude larger than the predetermined amplitude through the serial port, and acquire the insulation resistance of the high voltage connector with the amplitude larger than the predetermined amplitude through the serial port.
4. The vehicle high-voltage connector detection system according to claim 3, wherein the data acquisition card is configured to determine whether there is a risk of water or oil contamination in the corresponding high-voltage connector according to the insulation resistance of the high-voltage connector with the amplitude greater than the predetermined amplitude, and send information for repairing or replacing the high-voltage connector with the amplitude greater than the predetermined amplitude when it is determined that there is a risk of water or oil contamination.
5. The detection system for a high-voltage connector of a vehicle according to any one of claims 1 to 4, further comprising:
and the multi-path switching circuit is connected with the insulation detection device, and the insulation detection device selects the high-voltage connector with the amplitude larger than the preset amplitude through the multi-path switching circuit so as to detect the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude.
6. The vehicle high voltage connector detection system of claim 5, wherein the multiplexing switching circuit includes a multiplexing switch.
7. The detection system of a high-voltage connector of a vehicle according to claim 1, wherein said vibration detection means includes a plurality of acceleration sensors.
8. A method of testing a high voltage connector of a vehicle, comprising:
detecting a plurality of vibration signals of a plurality of high voltage connectors in a vehicle;
judging whether a high-voltage connector with amplitude larger than a preset amplitude exists according to the vibration signals;
if so, sending an early warning signal, and detecting the insulation resistance of the high-voltage connector with the amplitude larger than the preset amplitude;
and determining whether the high-voltage connector is abnormal or not according to the insulation resistance.
9. The method for detecting a high-voltage connector of a vehicle according to claim 8, wherein said determining whether the high-voltage connector is abnormal according to the insulation resistance includes:
if the insulation resistance is smaller than a preset value, the corresponding high-voltage connector is judged to have water inlet or oil stain risks;
and sending information for repairing or replacing the high-voltage connector with the amplitude larger than the preset amplitude.
10. A vehicle, characterized by comprising: the detection system for a high-voltage connector of a vehicle according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367044.7A CN113049992A (en) | 2019-12-26 | 2019-12-26 | Detection method and system for high-voltage connector of vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367044.7A CN113049992A (en) | 2019-12-26 | 2019-12-26 | Detection method and system for high-voltage connector of vehicle and vehicle |
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| CN113049992A true CN113049992A (en) | 2021-06-29 |
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| CN201911367044.7A Pending CN113049992A (en) | 2019-12-26 | 2019-12-26 | Detection method and system for high-voltage connector of vehicle and vehicle |
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| CN104797452A (en) * | 2012-09-17 | 2015-07-22 | 大众汽车有限公司 | Device, vehicle, method and computer program for deactivating high-voltage components of a vehicle |
| CN105346396A (en) * | 2015-11-10 | 2016-02-24 | 北京新能源汽车股份有限公司 | Automatic high-voltage electrical appliance cut-off method and system used in moment of automobile colliding and automobile |
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Application publication date: 20210629 |