CN210376528U - Device for automatic detection of alternating current charging interface - Google Patents

Device for automatic detection of alternating current charging interface Download PDF

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Publication number
CN210376528U
CN210376528U CN201920449234.2U CN201920449234U CN210376528U CN 210376528 U CN210376528 U CN 210376528U CN 201920449234 U CN201920449234 U CN 201920449234U CN 210376528 U CN210376528 U CN 210376528U
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China
Prior art keywords
interface
controlled switch
controller
charging
controlled
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CN201920449234.2U
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Inventor
韩华春
吕振华
李强
徐亮
费骏韬
史明明
唐伟佳
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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Abstract

The utility model provides a device for automatic detection of an AC charging interface, which is connected between the AC charging interface and a charging vehicle and comprises an AC test control circuit; the alternating current test control circuit comprises a wiring module, a controller, a plurality of controlled switches and a load interface. The utility model provides a device simulation facility of charging wiring between interface and the electric automobile that charges, through the on-off control of controller to controlled switch control realization circuit, under the prerequisite of not destroying original interface, the electric automobile alternating current who establishes among the national standard is accomplished to the high efficiency in the automation detects the item, and detection efficiency is higher, and simple operation and precision promote greatly.

Description

Device for automatic detection of alternating current charging interface
Technical Field
The utility model relates to a device for exchanging automatic detection of interface that charges belongs to electric automobile facility detection area that charges.
Background
The electric automobile takes a vehicle-mounted power supply as power, the wheels are driven by the motor to run, the influence of the electric automobile on the environment is smaller than that of the traditional automobile, and the development prospect is wide. As a charging device developed in coordination with the technical development of an electric vehicle, the technical development of the charging device is also very important, and it is also important to detect whether the charging process is safe and stable.
In order to ensure the safety of the charging process, the state has come out of the relevant detection standards, the standards require interoperability check on the charging interface, and the control and guidance functions of the charging interface are independently operated and completely isolated. The charging control circuit is sealed inside the charging interface and is connected with the charging facility through the control lead, and when the charging interface is correctly inserted into the electric automobile, the control circuit is communicated with the electric automobile through the charging interface. The test of the charging interface is to detect whether the corresponding action of the charging facility is consistent with the national standard requirement when the abnormal state of the control circuit is monitored and if the disconnection fault occurs.
Therefore, under the current condition, when the charging interface is detected in an abnormal state, the disconnection fault of the control circuit needs to be manufactured, and the method is low in detection efficiency and needs to destroy the original interface.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes above-mentioned prior art is not enough, provides the device that is used for exchanging the automatic detection of interface that charges, and the simulation facility that charges is the wiring between interface and the electric automobile, through the on-off control to the circuit, under the prerequisite of not destroying original interface, through detecting the electric automobile exchange that the program control means stipulated in the automatic high-efficient completion national standard detects the item of interface abnormal state that charges.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a device for automated detection of an ac charging interface, the device being connected between the ac charging interface and a charging vehicle, the device comprising: an AC test control circuit;
the alternating current test control circuit comprises a wiring module, a controller, a plurality of controlled switches and a load interface, wherein the wiring module is provided with a terminal structure of a standard alternating current charging interface, the terminal structure is connected with the alternating current charging interface in a pluggable manner, an L interface and an N interface are respectively connected to the load interface through the controlled switch N1 and the controlled switch N2, and the load interface can be connected with a charging vehicle;
the PE interface of the wiring module is connected to the ground GND through a controlled switch E1, and the CC interface is connected to the ground GND through a controlled switch E2; the node between the CC interface of the junction module and the controlled switch E2 is connected with the input end of the controller through the controlled switch E4; the node on the connection between the controlled switch E4 and the controller is connected through the switch E3 to one end of a resistor, the other end of which is connected to ground GND;
the CP interface of the wiring module is connected with the input end of the controller through a controlled switch E6;
the node between the CP interface of the junction module and the controlled switch E6 is connected to one end of a resistor R6 through a controlled switch E7, and one end of the resistor R6 is connected to the ground GND;
the controller is respectively connected with the control ends of all the controlled switches and used for outputting control signals to control the on-off of the controlled switches.
Further, in order to better simulate the behavior of the vehicle under the condition of inaccurate or unstable voltage, two groups of parallel circuits are respectively led out between the controlled switch E6 and the input end of the controller, the first group of circuits comprises three parallel circuits, each circuit comprises a resistor with a specific resistance value, and the three resistors are respectively connected to GND through the controlled switch D1, the controlled switch D2 and the controlled switch D3; the second group of circuits also comprises three resistors which are connected in parallel and have the same resistance as the three resistors of the first group, and are also connected to a common node through three controlled switches, namely a controlled switch D4, a controlled switch D5 and a controlled switch D6 respectively, and the common node of the three controlled switches of the second group is connected to the ground GND through a switch S2.
Still further, in order to ensure the safety of the test line and prevent the reverse connection of the CP terminal to the controller, a diode is connected between the controlled switch E6 and the input terminal of the controller, and the anode of the diode is connected to the controlled switch E6, and the cathode of the diode is connected to the input terminal of the controller.
Furthermore, in order to measure the voltages of the CC end and the CP end of the charging pile conveniently, the charging facility is tested in a charging control state, the device further comprises an alternating current test sensor interface, the alternating current test sensor interface comprises a signal input end interface and a signal output end interface, two sampling points led out between the CC interface and the CP interface of the wiring module and between the controlled switch E2 and the controlled switch E6 are connected with the signal input end interface of the alternating current test sensor interface, and the signal output end of the alternating current test sensor interface is connected with the input end of a controller in the alternating current test control circuit.
Furthermore, the device also comprises a communication interface which is respectively connected with the controller in the alternating current test control circuit and the automatic detection device.
Preferably, the communication interface is adapted to a CAN fieldbus interface and/or an ethernet bus interface.
The utility model discloses following beneficial effect has for prior art:
1. the utility model provides a device for exchanging automatic detection of charging interface, the wiring between simulation charging facility charging interface and the electric automobile, according to the requirement that detects, through the break-make realization abnormal state test that charges of controlling the break-make of each circuit, the resistance that the cooperation was inserted mainly can realize simulation insulation detection, CC lead wire disconnection test, CP lead wire disconnection test, PE broken string test, simulation ground test and simulation abnormal stop charging and simulation voltage abnormal change etc. convenient and fast just do not destroy the charging interface and can accomplish the test circuit, this device conveniently dismantles the change simultaneously;
2. the utility model discloses draw forth the check point, make things convenient for detecting instrument to insert test sensor interface sampling check point voltage, through the control of controller, the probe can acquire the accurate voltage of CC and CP circuit automatically in real time to send data to the controller, and can worker through the time point and the time length that controller control test sensor inserts; the utility model discloses be convenient for realize the charge control state test, guarantee that charging facility and vehicle can match smoothly and charge, can shorten test time greatly, improve efficiency of software testing and measuring accuracy;
3. the utility model simulates and detects the abnormal voltage change through different resistors and simulates different stages of the vehicle;
4. the device provided by the utility model still includes communication interface, preferably communication interface adaptation CAN field industry bus interface and/or ethernet bus interface, accessible communication interface and automatic detection device realize communication and data transmission.
Drawings
FIG. 1 is a system structure diagram of an embodiment of the present invention;
fig. 2 is an ac test control circuit diagram according to an embodiment of the present invention;
fig. 3 is a system block diagram of another embodiment of the present invention;
fig. 4 is an ac test control circuit diagram according to another embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1: a device for automatic detection of an ac charging interface, as shown in fig. 1, connected between the ac charging interface and a charging vehicle, the device comprising: an AC test control circuit; the alternating current test control circuit comprises a wiring module, a controller, a plurality of controlled switches and a load interface, wherein the controlled switches are switches (hereinafter referred to as controlled switches or simply switches) which can be connected with external control signals and are controlled by the external control signals to be switched on and switched off. The wiring module is provided with a terminal structure of a standard alternating current charging interface, the terminal structure is connected with the alternating current charging interface in a pluggable manner, the L interface and the N interface are respectively connected to a load interface through a controlled switch N1 and a controlled switch N2, and the load interface can be connected with a charging vehicle;
the PE interface of the wiring module is connected to the ground GND through a controlled switch E1, and the CC interface is connected to the ground GND through a controlled switch E2; the node between the CC interface of the junction module and the controlled switch E2 is connected with the input end of the controller through the controlled switch E4; the node of the connection between the controlled switch E4 and the controller is connected to one end of a resistor RC through a used switch E3, the other end of the resistor RC is connected with a resistor R7, and the other end of the resistor R7 is connected to the ground GND; preferably, the resistor RC may be a sliding varistor;
the CP interface of the wiring module is connected with the input end of the controller through a controlled switch E6; the node between the CP interface of the junction module and the controlled switch E6 is connected to one end of a resistor R6 through a controlled switch E7, and one end of the resistor R6 is connected to the ground GND;
the controller is respectively connected with all the controlled switches and used for outputting control signals to control the on-off of the controlled switches (not shown in figure 1).
In order to ensure the safety of the test line and prevent the reverse connection of the CP terminal signal, a diode is preferably connected between the controlled switch E6 and the input terminal of the controller, and the anode of the diode is connected to the controlled switch E6 and the cathode of the diode is connected to the input terminal of the controller.
For single-phase electricity and three-phase electricity can both be compatible, the final 7 terminal structure that adopts of national standard alternating-current charging stake interface is promptly the utility model discloses a standard alternating-current charging interface's terminal structure, its terminal distribution mode and definition are as shown in following 1:
table 1 international ac charging pile interface 7 terminal structure
According to the regulations in the national standard of the conductive charging interoperability test Specification for electric vehicles, the interoperability test of the alternating current charging facility needs to test the charging abnormal state. The charging abnormal state test mainly detects whether the charging facility stops charging according to the national standard requirements when the CC lead wire is disconnected, the CP lead wire is disconnected and the grounding abnormal condition of the CP lead wire occurs, so that the safety of the charging behavior is ensured. The traditional detection method is that a detection person manually cuts off corresponding wiring points inside a charging facility, and the method is inconvenient to operate and needs to destroy a charging interface. The charging facility and the vehicle are connected in the embodiment, under the control of a detection program, the connection and disconnection of the alternating current load can be controlled by controlling N1 and N2, the detection of the disconnection of the CC lead is realized by a switch E4, the detection of the disconnection of the CP lead is realized by controlling a switch E6, and the detection of the grounding of the CP lead is realized by controlling a switch E7; the PE disconnection test is simulated through the control switch E1, and the insulation check of the CC lead is realized through the control switches E2, E4 and E3.
Preferably, the chip model of the controller in the utility model adopts GD32F107VCT6, which is a large-capacity interconnection type general MCU based on 108MHz ARM Cortex-M3 kernel in GD32F107 series. An 10/100M self-adaptive fast Ethernet Media Access Controller (MAC) is built in the GD32F107 series high-capacity interconnection type MCU, and an IEEE 1588 protocol oriented to accurate clock synchronization is supported, so that research personnel can develop highly interconnected novel products and real-time application based on an Ethernet connection function. The full-speed USB OTG interface is integrated on the chip, and three different transmission modes of Device, HOST and OTG can be supported. The GD32F107 also has two CAN2.0B interfaces which CAN be simultaneously connected with two field devices based on an industrial standard CAN bus, and is provided with two I2S audio-level interfaces based on a digital phase-locked loop to realize high-stability and anti-interference audio data transmission. The built-in high-capacity cache can enable the newly added peripheral interfaces to work simultaneously so as to meet the requirement of industrial standard communication, thereby enhancing the integration level and the connection capability of the system.
In the implementation the utility model discloses the time, according to detecting the flow requirement, program control output control signal, the controlled response switch switching of control, automatic completion detects. The specific control process can be implemented by programming in the prior art, and is not described herein.
Implementation 2: on the basis of the above embodiment, further, in order to better simulate the behavior of the vehicle under the condition of inaccurate or unstable voltage, two sets of parallel circuits are respectively led out between the controlled switch E6 and the input end of the controller, the first set of circuits includes three parallel circuits, each circuit includes a resistor with a specific resistance value, namely, a resistor R3_ L, a resistor R3 and a resistor R3_ H, and the three resistors are respectively connected to GND through the controlled switch D1, the controlled switch D2 and the controlled switch D3; the second group of circuits also comprises three resistors connected in parallel, namely a resistor R2_ L, a resistor R2 and a resistor R2_ H, the resistors are the same in resistance as the three resistors of the first group, and are also connected to a common node through three controlled switches, namely a controlled switch D4, a controlled switch D5 and a controlled switch D6, respectively, and the common connection node of the three controlled switches of the second group is connected to the ground GND through an automatic closing switch S2. According to the requirement of the AC test standard, the gun head is inserted, and S2 requires automatic closing. In the embodiment, the three paths in each group of circuits respectively simulate the situations that the measured voltage of the CP is 6V, 9V and 12V, wherein the resistance is set to be a proper size according to the voltage situation. After the CP, the CC and the PE are connected with the pile end, the controlled switches D1-D3 are switched on in the device through the controller according to the measured voltage value of the CP end to complete gating, after the charging load is switched on, S2 is automatically closed, and the switches D4-D6 are gated through the controller, so that the behavior of the vehicle can be tested under the condition of connection if the voltage is inaccurate.
Still further, in order to ensure the safety of the test line and prevent the reverse connection of the CP end signal, a diode D1 is connected between the controlled switch E6 and the input end of the controller, the anode of the diode is connected with the controlled switch E6, and the cathode of the diode is connected with the input end of the controller.
Example 3: according to the regulations in the national standard of the conductive charging interoperability test specification of electric vehicles, the alternating current charging facility interoperability test also needs to complete a charging control state test. The charging control state test mainly aims to detect whether the voltages of the CC and CP lines of the charging facility are consistent with the national standard requirements in each charging stage, and guarantee that the charging facility and the vehicle can be smoothly matched for charging. The traditional detection method is that detection personnel use a universal meter to manually detect corresponding wiring points inside a charging facility, and the method is low in efficiency and large in result error.
Therefore, on the basis of the above embodiment, in order to conveniently measure the voltages of the CC end and the CP end of the charging pile, the charging facility is tested in the charging control state, the device further includes an ac test sensor interface, the ac test sensor interface includes a signal input end interface and a signal output end interface, two sampling points respectively led out between the CC interface and the CP interface of the wiring module and between the controlled switch E2 and the controlled switch E6 are connected with the signal input end interface of the ac test sensor interface, and the signal output end of the ac test sensor interface is connected with the input end of the controller in the ac test control circuit. The utility model discloses be equipped with measuring probe, lug connection is at sampling point 1 and sampling point 2, and under the control of testing procedure, the probe can acquire the accurate voltage of CC and CP circuit automatically in real time to with data transmission to the controller.
Adopt the utility model discloses abnormal state that charges tests and does not need manual operation to need not destroy the interface that charges, promoted the convenience and the reliability that detect. The embodiment detects the current and voltage parameters of each detection point, connects the detection point with a detection instrument including an oscilloscope and a digital voltmeter at the position to be detected, and controls the detection position and the detection time point.
Example 4: on the basis of the above embodiment, further, the apparatus further includes a communication interface, and the communication interface is respectively connected with the controller in the ac test control circuit and the automatic detection apparatus (see fig. 4 for a schematic system structure diagram thereof). Preferably, the communication interface is adapted to a CAN fieldbus interface and/or an ethernet bus interface. The automatic detection device described herein is a device in the prior art, and supports a common industrial bus interface, which is not described herein again.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims (8)

1. A device for the automated detection of an AC charging interface, the device being connected between the AC charging interface and a charging vehicle, the device comprising: an AC test control circuit;
the alternating current test control circuit comprises a wiring module, a controller, a plurality of controlled switches and a load interface, wherein the wiring module is provided with a terminal structure of a standard alternating current charging interface, the terminal structure is connected with the alternating current charging interface in a pluggable manner, an L interface and an N interface are respectively connected to the load interface through the controlled switch N1 and the controlled switch N2, and the load interface can be connected with a charging vehicle;
the PE interface of the wiring module is connected to the ground GND through a controlled switch E1, and the CC interface is connected to the ground GND through a controlled switch E2; the node between the CC interface of the junction module and the controlled switch E2 is connected with the input end of the controller through the controlled switch E4; the node on the connection between the controlled switch E4 and the controller is connected through the switch E3 to one end of a resistor, the other end of which is connected to ground GND;
the CP interface of the wiring module is connected with the input end of the controller through a controlled switch E6;
the node between the CP interface of the junction module and the controlled switch E6 is connected to one end of a resistor R6 through a controlled switch E7, and one end of the resistor R6 is connected to the ground GND;
the controller is respectively connected with the control ends of all the controlled switches and used for outputting control signals to control the on-off of the controlled switches.
2. The device of claim 1, wherein two sets of parallel circuits are respectively led out between the controlled switch E6 and the input terminal of the controller, the first set of circuits comprises three parallel circuits and each circuit comprises a resistor, and the three resistors are respectively connected to GND through the controlled switch D1, the controlled switch D2 and the controlled switch D3; the second group of circuits also comprises three resistors connected in parallel, and the resistance values of the resistors are the same as those of the first group, and are also connected to a common node through three controlled switches, namely a controlled switch D4, a controlled switch D5 and a controlled switch D6, respectively, and the common node of the three controlled switches of the second group is connected to the ground GND through a switch S2.
3. The apparatus of any one of claims 1 or 2, wherein a diode is connected between the controlled switch E6 and the input of the controller, and the anode of the diode is connected to the controlled switch E6 and the cathode of the diode is connected to the input of the controller.
4. The device of claim 1, further comprising an ac test sensor interface, wherein the ac test sensor interface comprises a signal input terminal interface and a signal output terminal interface, two sampling points respectively led out between the CC interface and the CP interface of the wiring module and the controlled switch E2 and the controlled switch E6 are connected with the signal input terminal interface of the ac test sensor interface, and the signal output terminal of the ac test sensor interface is connected with the input terminal of the controller in the ac test control circuit.
5. The apparatus of claim 1, further comprising a communication interface, wherein the communication interface is connected to the controller and the automatic detection device in the ac test control circuit.
6. The apparatus of claim 5, wherein the communication interface is adapted to a CAN Fieldbus interface and/or an Ethernet bus interface.
7. The apparatus of claim 1, wherein an electricity meter interface is provided between the L interface and the N interface of the junction module.
8. The apparatus of claim 1, wherein the controller has a chip model of GD32F107VCT 6.
CN201920449234.2U 2019-04-03 2019-04-03 Device for automatic detection of alternating current charging interface Active CN210376528U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113985111A (en) * 2021-12-27 2022-01-28 国网瑞嘉(天津)智能机器人有限公司 Test system and method of robot power management board and electronic equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113985111A (en) * 2021-12-27 2022-01-28 国网瑞嘉(天津)智能机器人有限公司 Test system and method of robot power management board and electronic equipment

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