CN111948474A - Testing device and method for electronic locking device of electric automobile charging interface - Google Patents

Abstract

The invention provides a test device for an electronic locking device of an electric vehicle charging interface, comprising a box body, and a 12V power supply module, an AC contactor, a time relay, a counting relay and a control signal output line arranged on the box body; The power module, time relay, AC contactor and control signal output line form a control signal output system, which outputs +12V DC signal and ‑12V DC signal, which is used to control the locking and unlocking of the state of the electronic locking device of the electric vehicle charging interface; AC Contactors, equipment start and stop buttons and counting relays form a test counting system. The invention verifies the reliability and effectiveness of the electric vehicle charging interface electronic locking device in the entire life cycle of the electric vehicle through experiments, and clarifies that the electric vehicle charging interface electronic locking device can still maintain performance after 10,000 locking/unlocking cycles. Reliable and effective.

Description

A test device and method for an electronic locking device of an electric vehicle charging interface

technical field

The invention belongs to the technical field of testing, and in particular relates to a testing device and method for an electronic locking device of an electric vehicle charging interface.

Background technique

With the continuous vigorous development of the electric vehicle industry, the annual sales volume of electric vehicles has risen rapidly, and electric vehicles have gradually entered thousands of households. However, with the rapid development of electric vehicles, the problem of electric vehicle charging, especially the safety of electric vehicle charging, is becoming more and more important. more and more attention from society. In order to ensure the safety of the electric vehicle charging process, in the national standard "GB/T 20234.1-2015 General Requirements for Connecting Devices for Conductive Charging of Electric Vehicles Part 1", it is clearly required to install an electronic locking device on the DC charging interface of electric vehicles to ensure During the DC charging process of the electric vehicle, the electronic locking device of the charging interface of the electric vehicle is in a locked state, so as to prevent the occurrence of electric shocks. In addition, it should be understood that each electric vehicle will be charged at a high frequency throughout its life cycle, so it is necessary to ensure that the electronic locking device of the charging interface of the electric vehicle should be able to ensure reliable and effective operation throughout the life cycle. , so as to maximize the safety of personnel and property.

Although the reliability and effectiveness of the electronic locking device for the charging interface of the electric vehicle are of great importance during the charging process of the electric vehicle, there is currently no test equipment on the market that can detect the electronic locking device of the charging interface of the electric vehicle in the whole life cycle. The reliability and effectiveness of the system are verified, which will make the daily use of electric vehicles have great potential safety hazards.

SUMMARY OF THE INVENTION

In view of this, the present invention aims to provide a test device for an electric vehicle charging interface electronic locking device, which can verify the reliability and effectiveness of the electric vehicle charging interface electronic locking device in the entire life cycle of an electric vehicle through experiments, and clarify the electric vehicle charging interface. The interface electronic locking device remains reliable and effective after 10,000 locking/unlocking cycles.

In order to achieve the above object, the technical scheme of the present invention is achieved in this way:

A test device for the service life test of an electronic locking device of an electric vehicle charging interface, the test device includes a box body, a box body fixing seat, a 12V power supply module, an AC contactor, a time relay, a counting relay, a circuit breaker, a control Signal output line, equipment operation indicator light, equipment start and stop button;

In the control signal output system, the 12V power module provides a ﹢12V DC signal, the ﹢12V DC signal passes through the time relay, and sends a ﹢12V DC signal at a preset frequency, and the AC contactor converts the ﹢12V DC signal It is -12V DC signal, and finally can output + 12V DC signal and -12V DC signal according to the set demand law, and control the locking and unlocking of the state of the electronic locking device of the electric vehicle charging interface through the control signal output line;

The AC contactor, equipment start-stop button and counting relay work together to form a test counting system. Before the test starts, set the total number of tests in the counting relay, and feedback the actual number of tests through the AC contactor (the testing machine sends +12V DC power as required. signal and -12V DC signal), when the actual number of tests reaches the total number of tests set by the counting relay in advance, the test will be stopped; in addition, the start and stop button of the equipment can restart the equipment and reset the test value of the counting relay to zero to restart. Test; the equipment running indicator is used to show whether the testing machine is running normally with power on.

The invention also provides a test method for the service life test of the electronic locking device of the electric vehicle charging interface, the test method is as follows:

Before the test starts, connect the signal line of the electric vehicle charging interface locking device to the control signal output line of the equipment, adjust the time relay according to the frequency required for the test, connect the equipment to 220V AC, and then set the number of tests on the counting relay according to the test requirements.

After the preparations before the test are completed, press the start-stop button of the equipment to observe and determine whether the locking device of the charging interface of the electric vehicle has normally completed the locking and unlocking of the specified number of times. Compound requirements for charging interface locking device;

If it cannot be completed normally, first observe whether the circuit breaker is disconnected. If the circuit breaker is disconnected, close the circuit breaker again, and press the start and stop button of the equipment again. This cycle is repeated until the electric vehicle charging interface locking device can normally complete the specified number of times. until locked and unlocked;

If the circuit breaker is not disconnected, further check whether the electric vehicle charging interface locking device and the control signal output line are connected normally. If the connection is abnormal, reconnect and ensure that the connection is normal;

If the electric vehicle charging interface locking device is normally connected to the control signal output line, check whether the AC contactor, time relay, counting relay and other components are damaged. If the relevant components are damaged, power off and replace the relevant components. Start the stop button to start the test;

If you check the AC contactor, time relay, counting relay and other devices and find that they are not damaged, you need to use a 12V DC power supply to connect the electric vehicle charging interface locking device with a 12V DC signal and a -12V DC signal to observe whether it is locked and unlocked normally. If it can be locked and unlocked normally, press the start and stop button of the equipment again to start the test;

If the electric vehicle charging interface locking device still cannot be locked and unlocked normally, it can be determined that the electric vehicle charging interface locking device is faulty and does not meet the requirements.

Compared with the prior art, the device and method for testing an electronic locking device for an electric vehicle charging interface according to the present invention have the following advantages:

The present invention cyclically controls the locking and unlocking of the electric vehicle charging interface electronic locking device by regularly and continuously sending +12V electrical signals and -12V electrical signals to the electric vehicle charging interface electronic locking device, simulating the electric vehicle charging interface electronic lock The working state of the stop device during the charging process of the electric vehicle. And realize the adjustment of the locking and unlocking frequency of the electronic locking device of the electric vehicle charging interface according to the actual test requirements, and stop the operation after completing 10,000 cycles. performance, to judge the reliability and effectiveness of the electronic locking device of the electric vehicle charging interface.

Description of drawings

The accompanying drawings constituting a part of the present invention are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the system principle of the present invention.

FIG. 3 is a flow chart of the test operation of the present invention.

Among them: 1-box body; 2-box body holder; 3-12V power module; 4-AC contactor; 5-time relay; 6-counting relay; 7-circuit breaker; 8-control signal output line; 9- Equipment running indicator; 10-equipment start and stop button.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, 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 The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figures 1-3, the present invention provides a test device and a test method for the service life test of an electronic locking device of an electric vehicle charging interface, including a box body 1, a box body fixing seat 2, a 12V power module 3, an AC Contactor 4, time relay 5, counting relay 6, circuit breaker 7, control signal output line 8, equipment running indicator 9, equipment start-stop button 10.

The box body 1 is provided with a box body fixing seat 2, and the box body fixing seat 2 firmly fixes the equipment on the ground or wall to improve the safety of the equipment;

It should be noted that the current operation mode of the electric vehicle charging interface electronic locking device on the market is generally to start the lock mode with +12V DC signal, and start the unlock mode with -12V DC signal;

The circuit breaker 7 is used to test the main components of the safety protection system to ensure the safety of equipment and personnel;

Combined with the 12V power supply module 3, the time relay 5, the AC contactor 4 and the control signal output line 8, a control signal output system is formed to output +12V DC signal and -12V DC signal to control the electric vehicle charging interface electronic lock Locking and unlocking the state of the locking device;

In the control signal output system, the 12V power supply module 3 provides a ﹢12V DC signal, the ﹢12V DC signal passes through the time relay 5, and sends a ﹢12V DC signal at a preset frequency, and the AC contactor 4 sends the ﹢12V DC signal. The DC signal is converted into a -12V DC signal, and finally it can output + 12V DC signal and -12V DC signal according to the set demand law. Through the control signal output line 8, the state of the electronic locking device of the electric vehicle charging interface is controlled to be locked. and unlock;

The AC contactor 4, the equipment start-stop button 10 and the counting relay 6 cooperate together to form a test counting system. The number of times required to send ﹢12V DC signal and -12V DC signal), when the actual number of tests reaches the total number of tests set by the counting relay 6 in advance, stop the test; The test value is reset to zero to restart the test; the device operation indicator 9 is used to show whether the test machine is running normally with power on.

Before the test starts, connect the signal line of the electric vehicle charging interface locking device to the control signal output line 8 of the equipment, adjust the time relay 5 according to the frequency required for the test, connect the equipment to 220V AC, and then set the counting relay 6 according to the test requirements. The number of tests (the national standard requirement is 10,000 times).

After the preparation before the test is completed, press the start-stop button 10 of the equipment to observe and determine whether the locking device of the electric vehicle charging interface normally completes the locking and unlocking of the specified number of times. Composite requirements for car charging interface locking device;

If it cannot be completed normally, first observe whether the circuit breaker 7 is disconnected, if the circuit breaker 7 is disconnected, re-close the circuit breaker 7, press the equipment start-stop button 10 again, and so on, until the electric vehicle charging interface locking device can be normal Until the specified number of locking and unlocking is completed;

If the circuit breaker 7 is not disconnected, further check whether the electric vehicle charging interface locking device and the control signal output line 8 are connected normally.

If the electric vehicle charging interface locking device is properly connected to the control signal output line 8, check whether the AC contactor 4, time relay 5, counting relay 6 and other components are damaged. If the relevant components are damaged, power off and replace the relevant components. After the power is turned on again, press the start-stop button to start the test;

If the AC contactor 4, time relay 5, counting relay 6 and other devices are checked and found to be undamaged, a 12V DC power supply is required to connect the electric vehicle charging interface locking device with a 12V DC signal and a -12V DC signal to observe whether the lock is normal. and unlocking, if it can be locked and unlocked normally, press the start and stop button 10 of the equipment again to start the test;

If the electric vehicle charging interface locking device still cannot be locked and unlocked normally, it can be determined that the electric vehicle charging interface locking device is faulty and does not meet the requirements.

The present invention cyclically controls the locking and unlocking of the electric vehicle charging interface electronic locking device by regularly and continuously sending +12V electrical signals and -12V electrical signals to the electric vehicle charging interface electronic locking device, simulating the electric vehicle charging interface electronic lock The working state of the stop device during the charging process of the electric vehicle. And realize the adjustment of the locking and unlocking frequency of the electronic locking device of the electric vehicle charging interface according to the actual test requirements, and stop the operation after completing 10,000 cycles. performance, to judge the reliability and effectiveness of the electronic locking device of the electric vehicle charging interface.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. an electric vehicle charging interface electronic locking device testing device, it is characterized in that: comprise box body and be arranged on the 12V power supply module, AC contactor, time relay, counting relay, control signal output line that are arranged on the box body; Among them, the 12V power module, time relay, AC contactor and control signal output line form a control signal output system, which outputs +12V DC signal and -12V DC signal, which is used to control the locking and locking of the state of the electronic locking device of the electric vehicle charging interface unlock; AC contactor, equipment start-stop button and counting relay form a test counting system. 2. An electric vehicle charging interface electronic locking device testing device according to claim 1, characterized in that: the box body is provided with a box body fixing seat below the box body, and the box body fixing seat fixes the equipment on the ground or on the wall. 3 . The test device for an electronic locking device of an electric vehicle charging interface according to claim 1 , wherein a circuit breaker is further provided on the box body to ensure the safety of equipment and personnel. 4 . 4. The electric vehicle charging interface electronic locking device testing device according to claim 3, wherein the circuit breaker is respectively connected to 220V AC, 12V power module, equipment operation indicator light, and AC contactor. 5. A test device for an electric vehicle charging interface electronic locking device according to claim 1, characterized in that: the box body is further provided with an equipment operation indicator light, which is used to display whether the test machine is running normally with power on. 6 . The electric vehicle charging interface electronic locking device testing device according to claim 1 , wherein a device start-stop button is further provided on the box body, and the device start-stop button is used to restart the device. 7 . 7. The electric vehicle charging interface electronic locking device testing device according to claim 1, characterized in that: in the control signal output system, the 12V power supply module provides a ﹢12V direct current signal, and the ﹢12V direct current signal passes through the The time relay sends a ﹢12V DC signal at a preset frequency, and the AC contactor converts the ﹢12V DC signal into a -12V DC signal, and finally outputs a ﹢12V DC signal and a -12V DC signal, through the control signal output line, control Locking and unlocking of the state of the electronic locking device of the electric vehicle charging interface. 8. The electric vehicle charging interface electronic locking device testing device according to claim 1, wherein the test counting system sets the total number of tests in the counting relay, and feedbacks the actual number of tests through the AC contactor, when The test stops when the actual number of tests reaches the total number of tests set by the counting relay in advance. 9. A method for testing an electronic locking device for an electric vehicle charging interface, characterized in that it comprises the following steps: Preparation before the test; During the test, start the start-stop button of the equipment. If the electric vehicle charging interface locking device can normally complete the specified number of locking and unlocking, the compound requirements of the electric vehicle charging interface locking device can be judged through this equipment and test; If it cannot be completed normally, first determine whether the circuit breaker is disconnected. If the circuit breaker is disconnected, re-close the circuit breaker, and activate the start-stop button of the equipment again. This cycle is repeated until the electric vehicle charging interface locking device can normally complete the specified number of times. locking and unlocking; If the circuit breaker is not disconnected, further check whether the electric vehicle charging interface locking device and the control signal output line are connected normally. If the connection is abnormal, reconnect and ensure that the connection is normal; If the electric vehicle charging interface locking device is properly connected to the control signal output line, check whether the AC contactor, time relay, and counting relay are damaged. If the relevant components are damaged, power off and replace the relevant components. Stop button to start the test; If the AC contactor, time relay, and counting relay device are checked and found to be undamaged, use a 12V DC power supply to connect the electric vehicle charging interface locking device with a 12V DC signal and a -12V DC signal, and observe whether the locking and unlocking are normal, such as If it can be locked and unlocked normally, press the start and stop button of the device again to start the test; If the electric vehicle charging interface locking device still cannot be locked and unlocked normally, it can be determined that the electric vehicle charging interface locking device is faulty and does not meet the requirements. 10 . The method for testing an electronic locking device of an electric vehicle charging interface according to claim 9 , wherein the preparation work before the test comprises connecting a signal wire of the electric vehicle charging interface locking device to a control signal output wire of the device. 11 . Connect, adjust the time relay according to the frequency required for the test, connect the equipment to 220V AC, and then set the number of tests on the counting relay according to the test requirements.

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