Charging gun automatic detection system

Abstract

The invention relates to the technical field of electrical variable measurement, in particular to an electrical property testing device. According to the technical scheme, the charging gun automatic detection system comprises an upper computer and further comprises a detection module, the upper computer controls a detection unit through a control unit, and the control unit is located in the detection module; the detection module comprises a gun line on-off detection module, on-off is controlled through the control unit, and the on-state is judged according to a feedback signal. The electronic lock detection module judges a function state through a closing signal; the temperature state detection module judges the temperature state through the sampling voltage; the signal confirmation detection module is used for detecting whether direct-current and alternating-current gun head signals are normal or not; and the insulation and voltage resistance detection module is used for detecting the insulation and voltage resistance performance by collecting a voltage resistance test signal. The charging gun automatic detection system solves the problem that no AC / DC gun can be used for detection in the prior art, and achieves the purposes of high reliability, high automation level, good intelligent level and mobility.

Description

Technical Field

[0001] The invention relates to the technical field of measuring electric variables, and in particular to a testing device for electric properties. Background Art

[0002] With the rapid development of the new energy vehicle industry, charging piles have become an indispensable supporting facility for charging cars; the number of manufacturers producing charging piles is also increasing. In order to solve and meet the needs of mass production of charging pile products, a practical charging gun automatic test system is designed and developed. At present, many production enterprises have relatively simple incoming material inspections for charging guns, relying only on multimeters and auxiliary small power supplies to determine whether the charging guns are qualified. The inspection is simple, with fewer and incomplete inspection items, and there are certain quality and safety risks. At the same time, the information is recorded by people to make original paper records, and quality traceability is difficult. The new charging gun automatic test system developed and designed is an AC / DC integrated automatic test system, which can make up for the above defects and also designs wire continuity test, judgment detection and detection of charging gun charging signal confirmation, electronic lock startup disconnection and electronic lock signal feedback information, charging gun temperature control detection and judgment, and gun line insulation withstand voltage test; use the upper computer software to automatically record and save the communication display test items and the quality traceability and printing functions; improve the inspection efficiency and reliability of enterprise product quality and reduce costs.

[0003] For example, the Chinese patent with publication number CN111398743B discloses a whole vehicle high voltage circuit insulation detection method and device for new energy vehicles, and provides the following technical solutions. The present invention relates to the field of safety management of new energy vehicles, and provides a whole vehicle high voltage circuit insulation detection method and device for new energy vehicles, wherein the method includes: when the main relay of the high voltage battery pack of the new energy vehicle is in a disconnected state, judging whether there is a charging gun access signal; when the charging gun access signal is detected, detecting the battery temperature of the high voltage battery pack; judging whether the detected battery temperature is within the heating threshold range for indicating the battery pack charging only heating condition; when the detected battery temperature is within the heating threshold range, controlling the closing main relay before entering the charging only heating condition; based on the insulation detection circuit set in the battery management system, the whole vehicle high voltage circuit of the new energy vehicle is insulation tested. Thus, the risk of high voltage leakage caused by insulation failure under the charging only heating condition is eliminated, and the safety performance of the new energy vehicle is improved. However, the above-mentioned whole vehicle high voltage circuit insulation detection method and device for new energy vehicles do not support detection of both AC and DC guns, and have low safety performance, poor intelligence level, and low automation level. Summary of the invention

[0004] The present invention solves the problems in the prior art of lack of detection capabilities for both AC and DC charging guns, low safety performance, poor intelligence level and low automation level, and proposes an automatic detection system for charging guns, which achieves the goals of good safety performance, high reliability, high automation level, good intelligence level and mobility.

[0005] To achieve the above object, the present invention adopts the following technical solution: A charging gun automatic detection system includes a host computer, characterized in that it also includes a detection module, the host computer controls the detection unit through a control unit, and the control unit is located in the detection module; the detection module includes a gun line on-off detection module, which controls the on-off through the control unit and determines the conduction state according to a feedback signal; an electronic lock detection module, which determines the functional state through a closing signal; a temperature state detection module, which determines the temperature state through a sampling voltage; a signal confirmation detection module, which detects whether the DC and AC gun head signals are normal; an insulation withstand voltage detection module, which detects the insulation withstand voltage performance between gun lines and between the gun line and the ground by collecting withstand voltage test signals.

[0006] The advantage of such a design is that the automatic detection system designed in the present invention improves detection efficiency and safety, supports multiple types of charging guns, and automatically records and analyzes to ensure quality traceability. It is convenient and flexible to use, and greatly improves production line efficiency and product reliability.

[0007] Preferably, the gun line on-off detection module includes a PCU input interface, a PCU output interface and a transfer terminal; one end of 1I03 in the PCU input interface is connected to the positive pole of the auxiliary power supply, and the other end is connected to pin 1 of the transfer terminal X4.3; one end of 1I04 in the PCU input interface is connected to the negative pole of the auxiliary power supply, and the other end is connected to pin 1 of the transfer terminal X4.4; one end of 1I05 in the PCU input interface is connected to the positive pole of the CAN communication signal, and the other end is connected to pin 1 of the transfer terminal X4.5; one end of 1I06 in the PCU input interface is connected to the negative pole of the CAN communication signal, and the other end is connected to pin 1 of the transfer terminal X4.6; pin 2 of the transfer terminal X4.3 is connected to the A+ port of the charging gun head, pin 2 of the transfer terminal X4.4 is connected to the A- port of the charging gun head, and pin 2 of the transfer terminal X4.5 is connected to the charging gun The adapter terminal X4.6 is connected to the charging gun head S+ port, and the 2nd pin of the adapter terminal X4.6 is connected to the charging gun head S- port; the 1st pin of the adapter terminal X3.3 is connected to the gun seat A+ port, and the 2nd pin is connected to the ID03 in the PCU output interface; the 1st pin of the adapter terminal X3.4 is connected to the gun seat A- port, and the 2nd pin is connected to the ID04 in the PCU output interface; the 1st pin of the adapter terminal X3.4 is connected to the gun seat A- port, and the 2nd pin is connected to the ID04 in the PCU output interface; the 1st pin of the adapter terminal X3.2 is connected to the gun seat S+ port, and the 2nd pin is connected to the ID05 in the PCU output interface; the 1st pin of the adapter terminal X3.6 is connected to the gun seat S- port, and the 2nd pin is connected to the ID06 in the PCU output interface; the gun line on-off detection module is realized by controlling the closing or disconnection of the output and input ports of the PCU by the upper computer, and the conduction state of the gun line is determined by whether the feedback signal is closed or not.

[0008] The advantage of this design is that it can realize the on-off detection of the charging gun through automatic control, reduce human errors, and improve the test accuracy and efficiency. Whether the feedback signal is closed or not directly determines the conduction state, ensuring that the test process is simple and reliable.

[0009] Preferably, the electronic lock detection module includes a PCU control unit, an electronic lock power supply and an adapter terminal; one end of 1D08 in the PCU control unit is connected to the negative pole of the power supply, and the other end is connected to pin 1 of the adapter terminal X4.10 through the electronic lock power supply; pin 1 of the adapter terminal X4.9 is connected to the positive pole of the power supply through the electronic lock power supply, and pin 2 is connected to the electronic lock in the charging gun head; pin 2 of the adapter terminal X4.10 is connected to the electronic lock; one end of 1I8 in the PCU control unit is connected to pin 1 of the adapter terminal X4.11, and the other end is connected to the adapter Connect pin 1 of terminal X4.12; pin 2 of the adapter terminal X4.11 is connected to pin 2 of the adapter terminal X4.12 through the switch in the charging gun head; the electronic lock detection module controls the electronic lock power supply to close or disconnect through 1D08 of PCU to complete locking or unlocking the gun. When the electronic lock locks the gun, the electronic lock status feedback signal is closed, and the closing signal is fed back to PCU through 1I8, and the collected closing signal is uploaded to the host computer and judged to be normal; on the contrary, if 1I8 does not detect the closing signal after 1D08 is closed, the host computer judges it as abnormal.

[0010] The advantage of this design is that the electronic lock detection module controls the closing and opening of the electronic lock through the PCU to achieve automatic locking and unlocking of the gun. The feedback signal determines the status, ensures safe operation, reduces manual intervention and improves convenience.

[0011] Preferably, the temperature state detection module includes a voltage acquisition module, an adapter terminal and a PCU control unit, pin 1 of resistor R1 is connected to one end of 1D09 in the PCU control unit, pin 2 is connected to pin 1 of adapter terminal X4.13, and the other end of 1D09 is connected to the negative electrode of the power supply and the voltage acquisition module; pin 1 of resistor R2 is connected to the positive electrode of the power supply, and pin 2 is connected to pin 1 of adapter terminal X4.14; one end of 2D09 in the PCU control unit is connected to the voltage acquisition module, and the other end is connected to X4.15; pin 2 of the adapter terminal X4.13 is connected to pin 2 of the adapter terminal X4.15 through a switch in the charging gun head, and pin 2 of the adapter terminal X4.14 is connected to pin 2 of the adapter terminal X4.15 through another switch in the charging gun head; the resistance value of the resistor R1 is the same as that of the resistor R2.

[0012] The advantage of this design is that the temperature status detection module performs accurate temperature detection through the voltage acquisition module to ensure the accuracy of the detection process. The voltage division principle is adopted to improve the reliability of judgment and ensure the normal temperature control function of the charging gun.

[0013] Preferably, the signal confirmation detection module includes a voltage acquisition module, a PCU input and output interface and a transfer terminal; one end of 1I07 in the PCU input and output interface is connected to the power acquisition module, and the other end is connected to pin 1 of the transfer terminal X4.7; one end of 2I04 in the PCU input and output interface is connected to the power acquisition module, and the other end is connected to one end of 1K1, and the other end of 1K1 is connected in parallel to pin 1 of the transfer terminal X4.16 and one end of 2K1; pin 1 of 1I10 is connected to pin 1 of 2I05, pin 2 of 1D10 and pin 2 of 2D05, and pin 2 The pin of the adapter terminal X4.17 is connected to the 1st pin of the adapter terminal; the 1st pin of 2I05 is connected to the 2nd pin of 1D10, the 2nd pin of 2D05 and the 2nd pin of 2D04, the 2nd pin is connected to one end of 1K08, and the other end of 1K8 is connected in parallel with one end of 2K8 and the 1st pin of the adapter terminal X4.23; the 1st pin of the adapter terminal X4.7 is connected to the voltage acquisition module and the 1st pin of 2I04, the 2nd pin is connected to the CC1 port of the charging gun head and the 1st pin of R7; the 2nd pin of the adapter terminal X4.16 is connected to the PE port of the charging gun head and the 2nd pin of the resistor R7 and the 1st pin of the resistor R6, the 2nd pin of the resistor R6 is connected to the charging The CC2 port of the gun head; the 2nd pin of the adapter terminal X4.17 is connected to the CP port of the charging gun head; the 2nd pin of the adapter terminal X4.23 is connected to the PE port of the charging gun head; the 1st pin of the adapter terminal X3.7 is connected to the CC1 port of the gun holder and the 2nd pin of R3 and the 2nd pin of 2D07, and the 2nd pin is connected to the 1st pin of 1D07; the 1st pin of the adapter terminal X3.8 is connected to the PE port of the gun holder, the 2nd pin is connected to one end of 1K1, and the other end of 1K1 is connected to the 1st pin of 2D04; the adapter terminal X3.9 is connected to the CC2 port of the gun holder and the 1st pin of the resistor R5 and the 2nd pin of 2D10, and the 2nd pin of the resistor R5 is connected to the 2nd pin of the resistor R5. The pin of the adapter terminal X3.11 is connected to the positive pole of the power supply; pin 1 of the adapter terminal X3.11 is connected to the CP port of the gun mount, and pin 2 is connected to pin 1 of 1D10; the adapter terminal X3.12 is connected to the CC1 port of the gun mount and pin 1 of resistor R8, pin 2 of 2D11 and pin 2 of resistor R4; pin 1 of the adapter terminal X3.17 is connected to the PE port of the gun mount and pin 2 of resistor R8, pin 2 is connected to one end of 1K8, and the other end of 1K8 is connected to pin 1 of 2D05; pin 1 of resistor R3 and resistor R4 are connected to the positive pole of the power supply; one end of the voltage acquisition module is connected to 2D07, 2D11 and pin 1 of 2D10.

[0014] The advantage of this design is that the DC and AC signal detection is performed through voltage acquisition to ensure that the signal is normal. The precise resistance calculation and feedback mechanism are used to improve the accuracy and efficiency of the test and ensure that the charging gun functions properly.

[0015] Preferably, the insulation withstand voltage detection module includes a DC gun withstand voltage detection module and an AC gun withstand voltage detection module.

[0016] Preferably, the DC gun withstand voltage detection module includes an adapter terminal and a PCU control unit; pin 1 of the adapter terminal X4.16 is connected to one end of 2K1 and one end of 1K1, pin 2 is connected to the PE port in the charging gun head, and the other end of 1K1 is connected to pin 2 of 2I04; pin 1 of the adapter terminal X4.1 is connected to one end of 2K2 and one end of 1K2 and one end of 2K9, pin 2 is connected to the DC+ port in the charging gun head, and the other end of 1K2 is connected to pin 2 of 1I01; pin 1 of the adapter terminal X4.2 is connected to one end of 2K3 and one end of 1K3, pin 2 is connected to the DC- port in the charging gun head, and the other end of 1K3 is connected to 1I02 Pin 2 of the adapter terminal X3.8 is connected to the PE port in the gun holder, pin 2 is connected to one end of 1K1, and the other end of 1K1 is connected to pin 1 of 2D04; Pin 1 of the adapter terminal X3.1 is connected to the DC+ port in the gun holder, pin 2 is connected to one end of 1K2, and the other end of 1K2 is connected to pin 1 of 1D01; Pin 1 of the adapter terminal X3.2 is connected to the DC- port in the gun holder, pin 2 is connected to one end of 1K3, and the other end of 1K3 is connected to pin 1 of 1D02; Pin 1 of 2I04 is connected to pin 1 of 1I01, pin 1 of 1I02 and pin 2 of 2D04, and pin 2 of 2D04 is connected to pin 2 of 1D01 and pin 2 of 1D02.

[0017] Preferably, the 1K1 includes 3D01 connected to the negative pole of the power supply, X4.16 connected to 2I04 through a selection switch, and X3.8 connected to 2D04 through a selection switch; the 1K2 includes 3D02 connected to the negative pole of the power supply, X4.1 connected to 1I01 through a selection switch, and X3.1 connected to 1D01 through a selection switch; the 1K3 includes 3D03 connected to the negative pole of the power supply, X4.2 connected to 1I02 through a selection switch, and X3.2 connected to 1D02 through a selection switch; the 2K1 includes 4D01 connected to the negative pole of the power supply, and X4.16 connected to the high-voltage terminal PE of the withstand voltage instrument through a selection switch; the 2K2, 2K3 and 2K9 include 4D02, 4D03 and 3D09 connected to the negative pole of the power supply, one end of X4.1 is connected to the high-voltage terminal L of the withstand voltage instrument through a selection switch, and the other end is connected to the high-voltage terminal PE of the withstand voltage instrument through a selection switch, and X4.2 is connected to the high-voltage terminal L of the withstand voltage instrument through a selection switch.

[0018] The advantage of this design is that the DC gun's withstand voltage performance test ensures the insulation between DC+ / DC- and PE by automatically controlling the relay to switch the test end. This process improves the safety and accuracy of the test.

[0019] Preferably, the AC gun withstand voltage detection module includes a transfer terminal and a PCU control unit; the 2nd pin of 1I12 in the PCU control unit is connected to one end of 1K4, the other end of 1K4 is connected to one end of 2K4 and one end of 2K10 and the 1st pin of the transfer terminal X4.19, and the 2nd pin of the transfer terminal X4.19 is connected to the L1 port in the charging gun head; the 2nd pin of 2I01 is connected to one end of 1K5, the other end of 1K5 is connected to one end of 2K5 and one end of 2K11 and the transfer terminal X4.20 Pin 1 of adapter terminal X4.20 is connected to port L2 of the charging gun head; Pin 2 of 2I02 is connected to one end of 1K6, the other end of 1K6 is connected to one end of 2K6 and one end of 2K12 and pin 1 of adapter terminal X4.21, and pin 2 of adapter terminal X4.21 is connected to port L3 of the charging gun head; Pin 2 of 2I03 is connected to one end of 1K7, the other end of 1K7 is connected to one end of 2K7 and one end of 2K13 and pin 1 of adapter terminal X4.22, and adapter terminal X4. Pin 2 of 22 is connected to the N port in the charging gun head; Pin 2 of 2I05 is connected to one end of 1K8, the other end of 1K8 is connected to one end of 2K8 and pin 1 of adapter terminal X4.23, and pin 2 of adapter terminal X4.23 is connected to the PE port in the charging gun head; Pin 1 of adapter terminal X3.13 is connected to the L1 port in the gun holder, and pin 2 is connected to one end of 1K4, and the other end of 1K4 is connected to pin 1 of 1D12; Pin 1 of adapter terminal X3.14 is connected to the L2 port in the gun holder, and pin 2 is connected to one end of 1K5 End, the other end of 1K5 is connected to pin 1 of 2D01; pin 1 of adapter terminal X3.15 is connected to L3 port in the gun holder, pin 2 is connected to one end of 1K6, and the other end of 1K4 is connected to pin 1 of 2D02; pin 1 of adapter terminal X3.16 is connected to N port in the gun holder, pin 2 is connected to one end of 1K7, and the other end of 1K7 is connected to pin 1 of 2D03; pin 1 of adapter terminal X3.17 is connected to PE port in the gun holder, pin 2 is connected to one end of 1K8, and the other end of 1K8 is connected to pin 1 of 2D05.

[0020] Preferably, the 2K4 includes 4D04 connected to the negative pole of the power supply, one end of X4.19 is connected to the high voltage end L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage end PE of the withstand voltage instrument through the selection switch in 2K10; the 2K5 includes 4D05 connected to the negative pole of the power supply, one end of X4.20 is connected to the high voltage end L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage end PE of the withstand voltage instrument through the selection switch in 2K11; the 2K6 includes 4D06 connected to the negative pole of the power supply, one end of X4.21 is connected to the withstand voltage instrument through the selection switch The high voltage terminal L of the withstand voltage instrument, and the other end is connected to the high voltage terminal PE of the withstand voltage instrument through the selection switch in 2K12; the 4D07 in the 2K7 is connected to the negative pole of the power supply, one end of X4.22 is connected to the high voltage terminal L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage terminal PE of the withstand voltage instrument through the selection switch in 2K13; 4D09 in the 2K13 is connected to the negative pole of the power supply, 3D12 in the 2K12 is connected to the negative pole of the power supply, 3D11 in the 2K11 is connected to the negative pole of the power supply, and 3D10 in the 2K10 is connected to the negative pole of the power supply.

[0021] The advantage of this design is that the AC insulation withstand voltage detection module performs a withstand voltage test on the AC gun, automatically controls the relay to connect the test end, ensures the insulation between L1 / L2 / L3 / N and PE, and enhances the reliability and efficiency of the test.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention integrates fully automated operation, reducing human error and work intensity. It can simultaneously support the detection of multiple types of charging guns (DC, AC single / three-phase) to ensure that each product is fully tested. Equipped with host computer software, it realizes automatic recording and data analysis, facilitates quality traceability and quickly generates inspection reports, greatly improving the efficiency of the production line and the reliability of the product.

[0023] 2. The operating voltage of the present invention adopts 12VDC isolated power supply, and the low voltage and low current design ensures the safety of the test process. The test equipment is designed as a movable structure, equipped with quick crimping terminals, which facilitates the rapid replacement of the test interface and makes the operation easier. The system automatically controls the locking and unlocking of the electronic lock through an industrial computer, which reduces the complexity of operation and provides users with a safer and more reliable use experience.

[0024] 3. The system of the present invention has a built-in industrial computer, and the test parameters are set through software programming to realize automatic detection and judgment of various functional states of the charging gun. The test results are displayed on the computer screen in real time, and the inspection report is automatically generated and printed. All data can be traced and queried. Users can easily export test data, simplify daily records and information management processes, improve the company's quality management level, and help improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the overall circuit diagram of the present invention.

[0026] Figure 2 This is a circuit diagram of the gun line on-off detection module of the present invention.

[0027] Figure 3 This is a circuit diagram of the electronic lock detection module of the present invention.

[0028] Figure 4 This is a circuit diagram of the temperature state detection module of the present invention.

[0029] Figure 5 This is a circuit diagram of the signal confirmation detection module of the present invention.

[0030] Figure 6 This is a circuit diagram of the DC gun withstand voltage detection module of the present invention.

[0031] Figure 7 This is a partial circuit diagram of the AC gun withstand voltage detection module of the present invention.

[0032] Figure 8 This is another circuit diagram of the AC gun withstand voltage detection module of the present invention.

[0033] Fig. 9 It is a schematic diagram of the whole equipment in an embodiment of the present invention.

[0034] Illustration: display screen 1, incoming line switch 2, host 3, withstand voltage tester 4, AC tester 5, AC gun line terminal 6, DC gun line terminal 7. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings. The proportions of the components are not drawn according to the actual proportions, and the proportions and sizes shown in the accompanying drawings should not limit the substantial technical scheme of the present invention. These embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described.

[0036] See also Figure 1 As shown, a charging gun automatic detection system includes a host computer and a detection module, wherein the host computer controls the detection unit through a control unit, and the control unit is located in the detection module; the detection module includes a gun line on-off detection module, which controls the on-off through the control unit and determines the on-state according to the feedback signal; an electronic lock detection module, which determines the functional state through a closing signal; a temperature state detection module, which determines the temperature state through a sampling voltage; a signal confirmation detection module, which detects whether the DC and AC gun head signals are normal; and an insulation withstand voltage detection module, which detects the insulation withstand voltage performance between gun lines and between the gun line and the ground by collecting withstand voltage test signals.

[0037] like Figure 2 In one embodiment shown, the charging gun line on-off detection module is composed of a PCU input interface, a PCU output interface and a transfer terminal. Pin 2 of the adapter terminal X4.3 is connected to the A+ port of the charging gun head, pin 2 of the adapter terminal X4.4 is connected to the A- port of the charging gun head, pin 2 of the adapter terminal X4.5 is connected to the S+ port of the charging gun head, and pin 2 of the adapter terminal X4.6 is connected to the S- port of the charging gun head; pin 1 of the adapter terminal X3.3 is connected to the A+ port of the gun holder, and pin 2 is connected to ID03 in the PCU output interface; pin 1 of the adapter terminal X3.4 is connected to the A- port of the gun holder, and pin 2 is connected to ID04 in the PCU output interface; pin 1 of the adapter terminal X3.4 is connected to the A- port of the gun holder, and pin 2 is connected to ID04 in the PCU output interface; pin 1 of the adapter terminal X3.2 is connected to the S+ port of the gun holder, and pin 2 is connected to ID05 in the PCU output interface; pin 1 of the adapter terminal X3.6 is connected to the S- port of the gun holder, and pin 2 is connected to ID06 in the PCU output interface. The specific connections are as follows: PCU input interface: 1I03 is connected to the positive pole of the auxiliary power supply, and then to pin 1 of the transfer terminal X4.3; 1I04 is connected to the negative pole of the auxiliary power supply, and then to pin 1 of the transfer terminal X4.4; 1I05 is connected to the positive pole of the CAN communication signal, and then to pin 1 of the transfer terminal X4.5; 1I06 is connected to the negative pole of the CAN communication signal, and then to pin 1 of the transfer terminal X4.6.

[0038] Transfer terminal connection: Pin 2 of X4.3 is connected to the A+ port of the charging gun head, pin 2 of X4.4 is connected to the A- port of the charging gun head, pin 2 of X4.5 is connected to the S+ port of the charging gun head, and pin 2 of X4.6 is connected to the S- port of the charging gun head.

[0039] Gun mount connection: Pin 1 of the adapter terminal X3.3 is connected to the A+ port of the gun holder, and pin 2 is connected to the ID03 of the PCU output interface. Pin 1 of the adapter terminal X3.4 is connected to the A- port of the gun holder, and pin 2 is connected to the ID04 of the PCU output interface. Pin 1 of the adapter terminal X3.2 is connected to the S+ port of the gun holder, and pin 2 is connected to the ID05 of the PCU output interface. Pin 1 of the adapter terminal X3.6 is connected to the S- port of the gun holder, and pin 2 is connected to the ID06 of the PCU output interface.

[0040] Through the control of the host computer, the output and input ports of the PCU can be switched to a closed or open state, thereby determining the conduction state of the gun line by whether the feedback signal is closed or not.

[0041] The on / off test of the DC gun line A+ / A- / S+ / S- / CC1 / PE / DC+ / DC- and the AC gun line CP / L1 / L2 / L3 / N / PE is to use the host computer to control the PCU to open, close and disconnect, and at the same time feed back the closing signal to the PCU input to realize the on / off function of each gun line. Figure 2 As shown, when testing the on / off of the auxiliary power supply A+, the host computer controls the output relay of the PCU to operate, 1D03 is closed, the gun line is connected to the gun head through the X4.3 terminal, and then to the X3.3 adapter terminal through the grab seat, and returns to the COM terminal of the input through 1D03; at this time, X4.3 and the COM terminal form a closed loop, that is, the input 1I03 is closed, and the CPU uploads the collected closing signal to the host computer controller through 485 communication. The host computer test software determines that the circuit is normally turned on and "PASS" is qualified; on the contrary, if 1I03 does not detect the closing signal after 1D03 is closed, the host computer determines it as "NG" and unqualified.

[0042] like Figure 3 In one embodiment shown, the electronic lock detection module is composed of a PCU control unit, an electronic lock power supply and a transfer terminal. The specific connections are as follows: PCU control unit: One end of 1D08 is connected to the negative pole of the power supply, and the other end is connected to pin 1 of the transfer terminal X4.10 through the electronic lock power supply.

[0043] Transfer terminal connection: Pin 1 of X4.9 is connected to the positive pole of the power supply through the electronic lock power supply, and pin 2 is connected to the electronic lock in the charging gun head. Pin 2 of X4.10 is also connected to the electronic lock.

[0044] Feedback signal connection: One end of 1I8 of the PCU control unit is connected to pin 1 of the transfer terminal X4.11, and the other end is connected to pin 1 of the transfer terminal X4.12.

[0045] Pin 2 of X4.11 is connected to pin 2 of X4.12 through the switch in the charging gun head.

[0046] The electronic lock controls the power supply of the electronic lock to close or disconnect through 1D08 of the PCU to lock or unlock the gun. When the electronic lock locks the gun, the electronic lock status feedback signal K+ / K- is closed, and the closing signal is fed back to the input port of the PCU through 1I08; the CPU uploads the collected closing signal to the host computer controller through 485 communication, and the host computer test software determines that the circuit is normally connected and "PASS" is qualified; on the contrary, if 1I08 does not detect the closing signal after 1D08 is closed, the host computer determines it as "NG" and unqualified.

[0047] like Figure 4In one embodiment shown, the temperature status detection module is composed of a voltage acquisition module, a transfer terminal and a PCU control unit. Two resistors of the same size are connected in series on the wire loop of the thermostat T1+ and T1- to divide the 12VDC voltage, and then the sample voltage is taken at the common point of the two resistors to obtain information to determine whether the thermostat loop is normal. The specific connection method is as follows: Resistor R1: Its pin 1 is connected to the 1D09 port of the PCU control unit, and its pin 2 is connected to the 1st pin of the transfer terminal X4.13. The other end of 1D09 is connected to the negative pole of the power supply and the voltage acquisition module.

[0048] Resistor R2: Its pin 1 is connected to the positive pole of the power supply, and its pin 2 is connected to pin 1 of the transfer terminal X4.14.

[0049] PCU control unit: One end of 2D09 is connected to the voltage acquisition module, and the other end is connected to the transfer terminal X4.15.

[0050] Transfer terminal connection: Pin 2 of X4.13 is connected to pin 2 of X4.15 through a switch in the charging gun head, and pin 2 of X4.14 is also connected to pin 2 of X4.15 through another switch in the charging gun head.

[0051] Among them, R1 / R2 is a 2KΩ / 0.25W resistor. When PCU opens 1D09 and 2D09 is closed, the voltage at R1 and R2 is 12VDC. R1 and R2 have the same resistance, so the voltage on each resistor is 6VDC, that is, the voltage at the X4.15 interface drops to 6VDC; X4.15 then passes through 2D09 to the voltage acquisition module, and is uploaded to the host computer through 485 communication. When the host computer tests a voltage of about 6VDC, it is considered qualified.

[0052] (Calculation of voltage: R1+R2 series current I=U / R, 0.003A=12V / 4000Ω, U=I*R, U=0.003*2000Ω, U=6V).

[0053] like Figure 5In one embodiment shown, the signal confirmation detection module is composed of a voltage acquisition module, a PCU input and output interface, and an adapter terminal. Pin 1 of adapter terminal X4.7 is connected to the voltage acquisition module and pin 1 of 2I04, and pin 2 is connected to the CC1 port of the charging gun head and pin 1 of R7; pin 2 of adapter terminal X4.16 is connected to the PE port of the charging gun head and pin 2 of resistor R7 and pin 1 of resistor R6, and pin 2 of resistor R6 is connected to the CC2 port of the charging gun head; pin 2 of adapter terminal X4.17 is connected to the CP port of the charging gun head; pin 2 of adapter terminal X4.23 is connected to the PE port of the charging gun head; pin 1 of adapter terminal X3.7 is connected to the CC1 port of the gun holder and pin 2 of R3 and pin 2 of 2D07, and pin 2 is connected to pin 1 of 1D07; pin 1 of adapter terminal X3.8 is connected to the PE port of the gun holder, and pin 2 is connected to one end of 1K1, and the other end of 1K1 is connected to Connect to pin 1 of 2D04; connect adapter X3.9 to CC2 port of gun base, pin 1 of resistor R5 and pin 2 of 2D10, and pin 2 of resistor R5 is connected to the positive pole of power supply; connect adapter X3.11 to CP port of gun base, and pin 2 to pin 1 of 1D10; connect adapter X3.12 to CC1 port of gun base, pin 1 of resistor R8, pin 2 of 2D11 and pin 2 of resistor R4; connect adapter X3.17 to PE port of gun base and pin 2 of resistor R8, and pin 2 is connected to one end of 1K8, and the other end of 1K8 is connected to pin 1 of 2D05; connect resistor R3 and pin 1 of resistor R4 to the positive pole of power supply; connect one end of voltage acquisition module to 2D07, 2D11 and pin 1 of 2D10. The connection is as follows: PCU input and output interface: One end of 1I07 is connected to the voltage acquisition module, and the other end is connected to pin 1 of the transfer terminal X4.7. One end of 2I04 is connected to the voltage acquisition module, and the other end is connected to one end of 1K1. The other end of 1K1 is connected in parallel to pin 1 of the transfer terminal X4.16 and one end of 2K1. Pin 1 of 1I10 is connected to pin 1 of 2I05, pin 2 of 1D10, and pin 2 of 2D05, and pin 2 is connected to pin 1 of the transfer terminal X4.17.

[0054] Pin 1 of 2I05 is connected to pin 2 of 1D10, pin 2 of 2D05, and pin 2 of 2D04, and pin 2 is connected to one end of 1K08. The other end of 1K08 is connected in parallel to one end of 2K8 and pin 1 of transfer terminal X4.23.

[0055] Transfer terminal: Pin 1 of X4.7 is connected to the voltage acquisition module and pin 1 of 2I04, pin 2 is connected to the CC1 port of the charging gun head and pin 1 of R7, pin 2 of X4.16 is connected to the PE port of the charging gun head, pin 2 of resistor R7 and pin 1 of resistor R6, pin 2 of R6 is connected to the CC2 port of the charging gun head, pin 2 of X4.17 is connected to the CP port of the charging gun head, pin 2 of X4.23 is connected to the PE port of the charging gun head, pin 1 of X3.7 is connected to the CC1 port of the gun holder, pin 2 of R3 and pin 2 of 2D07, pin 2 is connected to pin 1 of 1D07, and pin 1 of X3.8 is connected to the PE port of the gun holder. , pin 2 is connected to one end of 1K1, the other end of 1K1 is connected to pin 1 of 2D04, X3.9 is connected to the CC2 port of the gun mount, pin 1 of resistor R5 and pin 2 of 2D10, pin 2 of R5 is connected to the positive pole of the power supply, pin 1 of X3.11 is connected to the CP port of the gun mount, pin 2 is connected to pin 1 of 1D10, X3.12 is connected to the CC1 port of the gun mount, pin 1 of resistor R8, pin 2 of 2D11 and pin 2 of resistor R4, pin 1 of X3.17 is connected to the PE port of the gun mount and pin 2 of resistor R8, pin 2 is connected to one end of 1K8, and the other end of 1K8 is connected to pin 1 of 2D05.

[0056] Resistor connection: Pin 1 of R3 and R4 is connected to the positive pole of the power supply.

[0057] Voltage acquisition module: One end is connected to pin 1 of 2D07, 2D11 and 2D10.

[0058] pass Figure 5 The circuit shown in the figure can confirm and detect the DC CC1 / CC2 / AC CC1 gun tip signal. The CC1 detection method is to add 12VDC voltage to one end of the resistor R3, and the host computer controls 1D07 of the PCU to disconnect, and 2D04, 1K1, and 2I04 to close. At this time, the voltage across R3 and R7 is 12VDC; the resistor R3 is 2KΩ, and R7 is 1KΩ; the voltage at point X3 is: (voltage calculation: R3+R7 series current I=U / R, 0.004A=12V / 3000Ω, U=I*R, U=0.004*1000Ω, U=4V) X3.7 is then transmitted to the voltage acquisition module through 2D07, and uploaded to the host computer through 485 communication. When the host computer tests a voltage of about 4VDC, it is considered qualified.

[0059] The CC2 detection method is to add 12VDC voltage to one end of resistor R5, and the host computer controls 2D04, 1K1, and 2I04 of PCU to be closed. At this time, the voltage across R5 and R6 is 12VDC; resistor R5 is 2KΩ, and R6 is 1KΩ; the voltage at point X3.9 is: (voltage calculation: R5+R6 series current I=U / R, 0.004A=12V / 3000Ω, U=I*R, U=0.004*1000Ω, U=4V) X3.9 then passes through 2D10 to the voltage acquisition module, and is uploaded to the host computer via 485 communication. When the host computer tests a voltage of about 4VDC, it is considered qualified.

[0060] The AC CC1 detection method is to add 12VDC voltage to one end of resistor R4, and the host computer controls 2D05, 1K8, and 2I05 of PCU to be closed. At this time, the voltage across R4 and R8 is 12VDC; resistor R4 is 2KΩ, and R8 is 220Ω; the voltage at point X3.12 is: (voltage calculation: R4+R8 series current I=U / R, 0.0055A=12V / 2220Ω, U=I*R, U=0.0055*220Ω, U=1.2V) X3.12 then passes through 2D11 to the voltage acquisition module, and is uploaded to the host computer via 485 communication. When the host computer tests a voltage of about 1.2VDC, it is considered qualified.

[0061] like Figures 6 to 8 In one embodiment shown, the insulation withstand voltage detection module includes a DC gun withstand voltage detection module and an AC gun withstand voltage detection module, wherein Figure 6 The DC gun withstand voltage detection module is shown. The DC gun withstand voltage detection module consists of a transfer terminal and a PCU control unit. The connection method is as follows: Transfer terminal X4.16: Pin 1 is connected to one end of 2K1 and 1K1, and pin 2 is connected to the PE port of the charging gun. The other end of 1K1 is connected to pin 2 of 2I04.

[0062] Transfer terminal X4.1: Pin 1 is connected to one end of 2K2, 1K2 and 2K9, and pin 2 is connected to the DC+ port of the charging gun. The other end of 1K2 is connected to pin 2 of 1I01.

[0063] Transfer terminal X4.2: Pin 1 is connected to one end of 2K3 and 1K3, and pin 2 is connected to the DC- port of the charging gun. The other end of 1K3 is connected to pin 2 of 1I02.

[0064] Transfer terminal X3.8: Pin 1 is connected to the PE port of the gun mount, and pin 2 is connected to one end of 1K1. The other end of 1K1 is connected to pin 1 of 2D04.

[0065] Transfer terminal X3.1: Pin 1 is connected to the DC+ port of the gun mount, and pin 2 is connected to one end of 1K2. The other end of 1K2 is connected to pin 1 of 1D01.

[0066] Transfer terminal X3.2: Pin 1 is connected to the DC- port of the gun mount, and pin 2 is connected to one end of 1K3. The other end of 1K3 is connected to pin 1 of 1D02, pin 1 of 2I04 is connected to pin 1 of 1I01, pin 1 of 1I02, and pin 2 of 2D04, and pin 2 of 2D04 is connected to pin 2 of 1D01 and pin 2 of 1D02.

[0067] 1K1 part: Contains 3D01, connected to the negative pole of the power supply, X4.16 is connected to 2I04 through the selection switch, and X3.8 is connected to 2D04 through the selection switch.

[0068] 1K2 part: Contains 3D02, connected to the negative pole of the power supply, X4.1 is connected to 1I01 through the selection switch, and X3.1 is connected to 1D01 through the selection switch.

[0069] 1K3 part: Contains 3D03, connected to the negative pole of the power supply, X4.2 is connected to 1I02 through the selection switch, and X3.2 is connected to 1D02 through the selection switch.

[0070] 2K1 part: Contains 4D01, connected to the negative pole of the power supply, X4.16 connected to the high voltage terminal PE of the withstand voltage tester through the selection switch, 2K2, 2K3 and 2K9 parts: Contains 4D02, 4D03 and 3D09, all connected to the negative pole of the power supply.

[0071] X4.1: One end is connected to the high voltage terminal L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage terminal PE of the withstand voltage instrument through the selection switch. X4.2 is connected to the high voltage terminal L of the withstand voltage instrument through the selection switch.

[0072] The DC gun DC+ / DC- / PE withstand voltage test detection method is as follows: withstand voltage test between PE and DC+, PCU controls relays 1K1 and 1K2 to disconnect the peripheral circuit of PE and DC+; relays 2K1 and 2K2 are energized to connect the test end of the withstand voltage instrument to PE and DC+; PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage instrument to start the withstand voltage test, and after the test, PDU controls relay 2K15 to reset the withstand voltage instrument; pass and fail are confirmed through the remote contact signal of the withstand voltage instrument connected to the open port of PCU.

[0073] For the withstand voltage test between DC+ and DC-, the PCU controls relays 1K2 and 1K3 to disconnect the peripheral circuits of DC+ and DC-, and relays 2K9 and 2K3 to connect the test terminals of the withstand voltage tester to DC+ and DC-; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the pass and fail are confirmed by connecting the remote contact signal of the withstand voltage tester to the open port of the PCU.

[0074] like Figure 7 and 8 In one embodiment shown, it is an AC gun withstand voltage detection module. The AC gun withstand voltage detection module consists of an adapter terminal and a PCU control unit. Pin 2 of adapter terminal X4.22 is connected to the N port in the charging gun head; Pin 2 of 2I05 is connected to one end of 1K8, and the other end of 1K8 is connected to one end of 2K8 and pin 1 of adapter terminal X4.23. Pin 2 of adapter terminal X4.23 is connected to the PE port in the charging gun head; Pin 1 of adapter terminal X3.13 is connected to the L1 port in the gun holder, and Pin 2 is connected to one end of 1K4, and the other end of 1K4 is connected to Pin 1 of 1D12; Pin 1 of adapter terminal X3.14 is connected to the gun The L2 port in the base, pin 2 is connected to one end of 1K5, and the other end of 1K5 is connected to pin 1 of 2D01; pin 1 of the adapter terminal X3.15 is connected to the L3 port in the gun base, pin 2 is connected to one end of 1K6, and the other end of 1K4 is connected to pin 1 of 2D02; pin 1 of the adapter terminal X3.16 is connected to the N port in the gun base, pin 2 is connected to one end of 1K7, and the other end of 1K7 is connected to pin 1 of 2D03; pin 1 of the adapter terminal X3.17 is connected to the PE port in the gun base, pin 2 is connected to one end of 1K8, and the other end of 1K8 is connected to pin 1 of 2D05. The connection method is as follows: PCU control unit 1I12 port: Pin 2 of 1I12 is connected to one end of 1K4, the other end of 1K4 is connected to one end of 2K4 and 2K10, and is also connected to pin 1 of the adapter terminal X4.19, and pin 2 of X4.19 is connected to the L1 port of the charging gun head. The 2I01 port of the PCU control unit: pin 2 of 2I01 is connected to one end of 1K5, the other end of 1K5 is connected to one end of 2K5 and 2K11, and is connected to pin 1 of the adapter terminal X4.20, and pin 2 of X4.20 is connected to the L2 port of the charging gun head.

[0075] 2I02 port of the PCU control unit: Pin 2 of 2I02 is connected to one end of 1K6, the other end of 1K6 is connected to one end of 2K6 and 2K12, and pin 1 of the adapter terminal X4.21, and pin 2 of X4.21 is connected to the L3 port of the charging gun head.

[0076] 2I03 port of the PCU control unit: Pin 2 of 2I03 is connected to one end of 1K7, the other end of 1K7 is connected to one end of 2K7 and 2K13, and connected to pin 1 of the adapter terminal X4.22, and pin 2 of X4.22 is connected to the N port of the charging gun head.

[0077] 2I05 port of the PCU control unit: Pin 2 of 2I05 is connected to one end of 1K8, the other end of 1K8 is connected to 2K8 and connected to pin 1 of the transfer terminal X4.23.

[0078] Connect pin 2 of X4.23 to the PE port of the charging gun.

[0079] Gun mount connection: Pin 1 of the adapter terminal X3.13 is connected to the L1 port of the gun base, pin 2 is connected to one end of 1K4, and the other end of 1K4 is connected to pin 1 of 1D12. Pin 1 of the adapter terminal X3.14 is connected to the L2 port of the gun base, pin 2 is connected to one end of 1K5, and the other end of 1K5 is connected to pin 1 of 2D01. Pin 1 of the adapter terminal X3.15 is connected to the L3 port of the gun base, pin 2 is connected to one end of 1K6, and the other end of 1K6 is connected to pin 1 of 2D02. Pin 1 of the adapter terminal X3.16 is connected to the N port of the gun base, pin 2 is connected to one end of 1K7, and the other end of 1K7 is connected to pin 1 of 2D03. Pin 1 of the adapter terminal X3.17 is connected to the PE port of the gun base, pin 2 is connected to one end of 1K8, and the other end of 1K8 is connected to pin 1 of 2D05.

[0080] 1K4 includes 3D04 connected to the negative pole of the power supply, X4.19 connected to 1I12 through the selection switch, and X3.13 connected to 1D12 through the selection switch; 1K5 includes 3D05 connected to the negative pole of the power supply, X4.20 connected to 2I01 through the selection switch, and X3.14 connected to 2D01 through the selection switch; 1K6 includes 3D06 connected to the negative pole of the power supply, X4.21 connected to 2I02 through the selection switch, and X3.15 connected to 2D02 through the selection switch; 1K7 includes 3D07 connected to the negative pole of the power supply, and X4.22 connected to 2I03, X3.16 are connected to 2D03 through the selection switch; 1K8 includes 3D08 connected to the negative pole of the power supply, X4.23 is connected to 2I05 through the selection switch, and X3.17 is connected to 2D05 through the selection switch; 2K8 includes 4D08 connected to the negative pole of the power supply, and X4.23 is connected to the high-voltage terminal PE of the withstand voltage tester through the selection switch; 2K14 includes 4D10 connected to the negative pole of the power supply, and NYY.5 is connected to NYY.3 through the selection switch; 2K15 includes 4D11 connected to the negative pole of the power supply, and NYY.5 is connected to NYY.2 through the selection switch.

[0081] For the withstand voltage test of L1 to PE, the PCU controls relays 1K8 and 1K4 to disconnect the peripheral circuit of PE and L1, and relays 2K8 and 2K4 to connect the test end of the withstand voltage tester to PE and L1; the PCU controls relays 2K14 and 2K14 to control the remote start button of the withstand voltage tester to start the withstand voltage test. After the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0082] For the withstand voltage test of L2 on PE, the PCU controls relays 1K8 and 1K5 to disconnect the peripheral circuit of PE and L2, and relays 2K8 and 2K5 to connect the test end of the withstand voltage tester to PE and L2; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0083] The specific method of AC gun L1 / L2 / L3 / N / PE withstand voltage test is as follows: For the withstand voltage test of L3 on PE, the PCU controls relays 1K8 and 1K6 to disconnect the peripheral circuit of PE and L3, and relays 2K8 and 2K6 to connect the test end of the withstand voltage tester to PE and L3; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0084] For the withstand voltage test of N to PE, the PCU controls relays 1K8 and 1K7 to disconnect the peripheral circuit of PE and N, and relays 2K8 and 2K7 to connect the test terminals of the withstand voltage tester to PE and N; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test. After the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0085] For the withstand voltage test of L1 to L2, the PCU controls relays 1K4 and 1K5 to disconnect the peripheral circuits of L1 and L2, and relays 2K10 and 2K11 to connect the test terminals of the withstand voltage tester to L1 and L2; the PCU controls relays 2K14 and 2K14 to control the remote start button of the withstand voltage tester to start the withstand voltage test. After the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0086] For the withstand voltage test of L1 to L3, the PCU controls relays 1K4 and 1K6 to disconnect the peripheral circuits of L1 and L3, and relays 2K10 and 2K12 to connect the test terminals of the withstand voltage tester to L1 and L3; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0087] For the withstand voltage test of L2 to L3, the PCU controls relays 1K5 and 1K6 to disconnect the peripheral circuits of L2 and L3, and relays 2K11 and 2K12 to connect the test terminals of the withstand voltage tester to L2 and L3; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0088] For the withstand voltage test of L1 to N, the PCU controls relays 1K4 and 1K7 to disconnect the peripheral circuit of L1 and N, and relays 2K10 and 2K13 to connect the test terminals of the withstand voltage tester to L1 and N; the PCU controls relays 2K14 and 2K14 to control the remote start button of the withstand voltage tester to start the withstand voltage test. After the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0089] For the withstand voltage test of L2 to N, the PCU controls relays 1K5 and 1K7 to disconnect the peripheral circuit of L2 and N, and relays 2K11 and 2K13 to connect the test terminals of the withstand voltage tester to L2 and N; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0090] For the withstand voltage test of L3 to N, the PCU controls relays 1K6 and 1K7 to disconnect the peripheral circuit of L3 and N, and relays 2K12 and 2K13 to connect the test terminals of the withstand voltage tester to L3 and N; the PCU controls relays 2K14, 2K14 controls the remote start button of the withstand voltage tester to start the withstand voltage test, and after the test, the PDU controls relay 2K15 to reset the withstand voltage tester; the qualified and unqualified signals are connected to the open port of the PCU through the remote contact signal of the withstand voltage tester to complete the qualified confirmation.

[0091] like Fig. 9In one embodiment shown, a totem cabinet is used, and each device of the system is installed in the cabinet. As a whole, the automatic test system equipment is easy to operate. Two directional and two universal wheels are designed at the bottom of the cabinet for easy movement. The two universal wheels are equipped with foot brakes to prevent the cabinet from shifting when the gun is inserted; the display panel is designed to be embedded, and the display is directly stuck on the front panel to prevent the screen from shaking and is beautiful. The mouse and keyboard bracket is designed to be drawer-type for easy operation. The computer host uses an industrial industrial computer and is directly fixed on the cabinet column. The withstand voltage instrument is placed on the bracket in the cabinet to expose the panel of the instrument. In order to facilitate the frequent replacement of the gun line connection during batch charging gun testing, the upper and lower layers of the quick wiring terminals are staggered and installed without interfering with each other. The cabinet has no front door for easy operation, and the back door is a grid-opening door for easy ventilation and heat dissipation of the host.

[0092] Based on the above, the advantages of the charging gun automatic testing system designed by the present invention are mainly: 1. Supports DC charging gun and AC (single / three-phase) charging gun detection.

[0093] 2. The operating voltage is 12VDC (direct current) isolated power supply, with low voltage and current, safe and reliable.

[0094] 3. The test equipment is movable, and the test interface uses quick crimping terminals for wire crimping, which makes the test automatic and quick.

[0095] 4. Automatically control the electronic lock to lock and unlock the gun.

[0096] 5. The built-in industrial computer sets the test parameters for the inspection product through software programming, realizes automatic detection of the functional status information of each charging gun of the product, realizes automatic judgment of "qualified or unqualified" of the product inspection results and displays them on the computer monitor, records the data and automatically generates the inspection report, and has the functions of charging gun inspection record and easy traceability.

[0097] 6. Test data can be exported for printing.

[0098] 7. Simple operation.

[0099] The present invention is not limited to the above-mentioned embodiments. No matter any changes are made in the shape or material composition, any structural design provided by the present invention is a variation of the present invention and should be considered to be within the protection scope of the present invention.

Claims

1. A charging gun automatic detection system, including a host computer, characterized in that: It also includes a detection module, the host computer controls the detection unit through a control unit, and the control unit is located in the detection module; the detection module includes a gun line on-off detection module, which controls the on-off through the control unit and determines the on-state according to the feedback signal; an electronic lock detection module, which determines the functional state through the closing signal; The temperature status detection module determines the temperature status by sampling voltage; the signal confirmation detection module detects whether the DC and AC gun head signals are normal; the insulation withstand voltage detection module detects the insulation withstand voltage performance between the gun lines and between the gun lines and the ground by collecting withstand voltage test signals.

2. The automatic detection system for a charging gun according to claim 1, characterized in that: The gun line on-off detection module includes a PCU input interface, a PCU output interface and a transfer terminal; one end of the 1I03 in the PCU input interface is connected to the positive pole of the auxiliary power supply, and the other end is connected to the 1st pin of the transfer terminal X4.3; One end of 1I04 in the PCU input interface is connected to the negative pole of the auxiliary power supply, and the other end is connected to pin 1 of the adapter terminal X4.4; one end of 1I05 in the PCU input interface is connected to the positive pole of the CAN communication signal, and the other end is connected to pin 1 of the adapter terminal X4.5; one end of 1I06 in the PCU input interface is connected to the negative pole of the CAN communication signal, and the other end is connected to pin 1 of the adapter terminal X4.

6.

3. A charging gun automatic detection system according to claim 1 or 2, characterized in that: The electronic lock detection module includes a PCU control unit, an electronic lock power supply and an adapter terminal; one end of 1D08 in the PCU control unit is connected to the negative pole of the power supply, and the other end is connected to pin 1 of the adapter terminal X4.10 through the electronic lock power supply; pin 1 of the adapter terminal X4.9 is connected to the positive pole of the power supply through the electronic lock power supply, and pin 2 is connected to the electronic lock in the charging gun head; pin 2 of the adapter terminal X4.10 is connected to the electronic lock; one end of 1I8 in the PCU control unit is connected to pin 1 of the adapter terminal X4.11, and the other end is connected to pin 1 of the adapter terminal X4.12; pin 2 of the adapter terminal X4.11 is connected to pin 2 of the adapter terminal X4.12 through the switch in the charging gun head.

4. The automatic detection system for a charging gun according to claim 3, characterized in that: The temperature state detection module includes a voltage acquisition module, an adapter terminal and a PCU control unit. Pin 1 of the resistor R1 is connected to one end of 1D09 in the PCU control unit, and pin 2 is connected to pin 1 of the adapter terminal X4.

13. The other end of the 1D09 is connected to the negative electrode of the power supply and the voltage acquisition module; pin 1 of the resistor R2 is connected to the positive electrode of the power supply, and pin 2 is connected to pin 1 of the adapter terminal X4.14; one end of 2D09 in the PCU control unit is connected to the voltage acquisition module, and the other end is connected to X4.15; pin 2 of the adapter terminal X4.13 is connected to pin 2 of the adapter terminal X4.15 through a switch in the charging gun head, and pin 2 of the adapter terminal X4.14 is connected to pin 2 of the adapter terminal X4.15 through another switch in the charging gun head; the resistance value of the resistor R1 is the same as that of the resistor R2.

5. The automatic detection system for a charging gun according to claim 4, characterized in that: The signal confirmation detection module includes a voltage acquisition module, a PCU input and output interface, and a transfer terminal; one end of 1I07 in the PCU input and output interface is connected to the power acquisition module, and the other end is connected to pin 1 of the transfer terminal X4.7; One end of 2I04 in the PCU input and output interface is connected to the power acquisition module, and the other end is connected to one end of 1K1. The other end of 1K1 is connected in parallel to pin 1 of the transfer terminal X4.16 and one end of 2K1. Pin 1 of 1I10 is connected to pin 1 of 2I05, pin 2 of 1D10 and pin 2 of 2D05, and pin 2 is connected to pin 1 of transfer terminal X4.17; Pin 1 of 2I05 is connected to pin 2 of 1D10, pin 2 of 2D05 and pin 2 of 2D04, pin 2 is connected to one end of 1K08, and the other end of 1K8 is connected in parallel to one end of 2K8 and pin 1 of transfer terminal X4.

23.

6. A charging gun automatic detection system according to claim 1 or 5, characterized in that: The insulation withstand voltage detection module includes a DC gun withstand voltage detection module and an AC gun withstand voltage detection module.

7. The automatic detection system for a charging gun according to claim 6, characterized in that: The DC gun withstand voltage detection module includes an adapter terminal and a PCU control unit; pin 1 of the adapter terminal X4.16 is connected to one end of 2K1 and one end of 1K1, pin 2 is connected to the PE port in the charging gun head, and the other end of 1K1 is connected to pin 2 of 2I04; pin 1 of the adapter terminal X4.1 is connected to one end of 2K2, one end of 1K2 and one end of 2K9, pin 2 is connected to the DC+ port in the charging gun head, and the other end of 1K2 is connected to pin 2 of 1I01; pin 1 of the adapter terminal X4.2 is connected to one end of 2K3 and one end of 1K3, and pin 2 is connected to the DC+ port in the charging gun head. Pin 1 of adapter terminal X3.8 is connected to the PE port in the gun holder, pin 2 is connected to one end of 1K1, and the other end of 1K1 is connected to pin 1 of 2D04; pin 1 of adapter terminal X3.1 is connected to the DC+ port in the gun holder, pin 2 is connected to one end of 1K2, and the other end of 1K2 is connected to pin 1 of 1D01; pin 1 of adapter terminal X3.2 is connected to the DC- port in the gun holder, pin 2 is connected to one end of 1K3, and the other end of 1K3 is connected to pin 1 of 1D02; Pin 1 of 2I04 is connected to pin 1 of 1I01, pin 1 of 1I02 and pin 2 of 2D04, and pin 2 of 2D04 is connected to pin 2 of 1D01 and pin 2 of 1D02.

8. The automatic detection system for a charging gun according to claim 7, characterized in that: The 1K1 includes 3D01 connected to the negative pole of the power supply, X4.16 connected to 2I04 through a selection switch, and X3.8 connected to 2D04 through a selection switch; the 1K2 includes 3D02 connected to the negative pole of the power supply, X4.1 connected to 1I01 through a selection switch, and X3.1 connected to 1D01 through a selection switch; the 1K3 includes 3D03 connected to the negative pole of the power supply, X4.2 connected to 1I02 through a selection switch, and X3.2 connected to 1D02 through a selection switch; the 2K1 includes 4D01 connected to the negative pole of the power supply, and X4.16 connected to the high-voltage terminal PE of the withstand voltage instrument through a selection switch; the 2K2, 2K3 and 2K9 include 4D02, 4D03 and 3D09 connected to the negative pole of the power supply, one end of X4.1 is connected to the high-voltage terminal L of the withstand voltage instrument through a selection switch, and the other end is connected to the high-voltage terminal PE of the withstand voltage instrument through a selection switch, and X4.2 is connected to the high-voltage terminal L of the withstand voltage instrument through a selection switch.

9. The automatic detection system for a charging gun according to claim 6, characterized in that: The AC gun withstand voltage detection module includes a transfer terminal and a PCU control unit; Pin 2 of 1I12 in the PCU control unit is connected to one end of 1K4, the other end of 1K4 is connected to one end of 2K4 and one end of 2K10 and pin 1 of transfer terminal X4.19, and pin 2 of transfer terminal X4.19 is connected to port L1 in the charging gun head; Pin 2 of 2I01 is connected to one end of 1K5, the other end of 1K5 is connected to one end of 2K5 and one end of 2K11 and pin 1 of transfer terminal X4.20, and pin 2 of transfer terminal X4.20 is connected to port L2 in the charging gun head; Pin 2 of 2I02 is connected to one end of 1K6, the other end of 1K6 is connected to one end of 2K6, one end of 2K12 and pin 1 of adapter terminal X4.21, and pin 2 of adapter terminal X4.21 is connected to port L3 in the charging gun head; Pin 2 of 2I03 is connected to one end of 1K7, the other end of 1K7 is connected to one end of 2K7, one end of 2K13 and pin 1 of adapter terminal X4.

22.

10. The automatic detection system for a charging gun according to claim 9, characterized in that: The 2K4 includes 4D04 connected to the negative pole of the power supply, one end of X4.19 is connected to the high voltage end L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage end PE of the withstand voltage instrument through the selection switch in 2K10; the 2K5 includes 4D05 connected to the negative pole of the power supply, one end of X4.20 is connected to the high voltage end L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage end PE of the withstand voltage instrument through the selection switch in 2K11; the 2K6 includes 4D06 connected to the negative pole of the power supply, one end of X4.21 is connected to the high voltage end PE of the withstand voltage instrument through the selection switch The voltage terminal L is connected to the high voltage terminal PE of the withstand voltage instrument through the selection switch in 2K12; the 4D07 in the 2K7 is connected to the negative pole of the power supply, one end of X4.22 is connected to the high voltage terminal L of the withstand voltage instrument through the selection switch, and the other end is connected to the high voltage terminal PE of the withstand voltage instrument through the selection switch in 2K13; the 4D09 in the 2K13 is connected to the negative pole of the power supply, the 3D12 in the 2K12 is connected to the negative pole of the power supply, the 3D11 in the 2K11 is connected to the negative pole of the power supply, and the 3D10 in the 2K10 is connected to the negative pole of the power supply.

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