Comprehensive detection tool for electrical parts of vehicle-mounted hydrogen supply system

Abstract

The utility model discloses a comprehensive detection tool for electrical parts of a vehicle-mounted hydrogen supply system. The comprehensive detection tool comprises an external wiring harness port and an operation display device, the external wiring harness ports comprise a plurality of bottleneck valve external ports used for matching bottleneck valve plug-ins, a plurality of electromagnetic valve external ports used for matching electromagnetic valve plug-ins, and a plurality of high / low pressure sensor external ports used for matching high / low pressure sensor plug-ins; the hydrogen concentration sensor external connection ports are used for being matched with the hydrogen concentration sensor plug-ins, and the hydrogen storage controller external connection ports are used for being matched with the hydrogen system communication interface plug-ins and the power supply interface plug-ins of the hydrogen storage controller. The operation display device comprises an ECU (Electronic Control Unit) module, a DC (Direct Current) external power supply and an upper computer display module; the ECU module is electrically connected with the external wiring harness port, the DC external power supply and the upper computer display module at the same time, and the DC external power supply is used for supplying power to the ECU module and the upper computer display module. The utility model has the advantage of simple and convenient operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vehicle-mounted hydrogen supply, in particular to vehicle-mounted hydrogen supply system electrical parts comprehensive detection frock and detection method. BACKGROUND

[0002] Vehicle-mounted hydrogen supply system as the important component of fuel cell vehicle, is by one or more hydrogen storage bottle through the pipeline fixed arrangement on the frame and cooperate various electrical parts form the system collection. With more and more hydrogen fuel cell vehicle is put into market, the production of vehicle-mounted hydrogen supply system is reduced through localization, thereby reaching scale will become the inevitable trend.

[0003] The electrical parts in vehicle-mounted hydrogen supply system include: bottle mouth valve, high pressure pressure sensor, low pressure pressure sensor, electromagnetic valve, hydrogen concentration sensor and hydrogen storage controller.

[0004] At present,

[0005] 1) In incoming inspection, only the appearance of electrical parts can be evaluated, and the specification is traced; the advantages and disadvantages of assembly need to be found in the debugging of the stack or the whole vehicle, which wastes the replacement and debugging time and is time-consuming and labor-consuming;

[0006] 2) When the material brand is replaced due to procurement cycle or other reasons, it is impossible to judge the advantages and disadvantages of the performance compared with the original brand;

[0007] 3) The electrical parts are easy to be damaged, and the failure rate of the electrical parts is high, so if there is a fault and it cannot be checked in time, the loss of the terminal will be large; at present, except for the direct replacement method, there is no other simple checking method. INVENTION CONTENTS

[0008] The utility model aims at providing a kind of vehicle-mounted hydrogen supply system electrical parts comprehensive detection frock, which is simple and convenient to operate, and can effectively detect electrical parts.

[0009] To achieve the above object, the utility model adopts the following technical scheme: a kind of vehicle-mounted hydrogen supply system electrical parts comprehensive detection frock, comprising: external wiring harness port and arithmetic display device;

[0010] The external wiring harness port includes: a plurality of bottle mouth valve external connection ports for matching bottle mouth valve plug-in, a plurality of electromagnetic valve external connection ports for matching electromagnetic valve plug-in, a plurality of high / low pressure pressure sensor external connection ports for matching high pressure pressure sensor plug-in and low pressure pressure sensor plug-in, a plurality of hydrogen concentration sensor external connection ports for matching hydrogen concentration sensor plug-in, a plurality of hydrogen storage controller external connection ports one for matching hydrogen system communication interface plug-in of hydrogen storage controller, and a plurality of hydrogen storage controller external connection ports two for matching power supply interface plug-in of hydrogen storage controller;

[0011] The operation display device comprises an ECU module, a DC external power supply and a host computer display module; the ECU module is electrically connected with the external wiring harness port, the DC external power supply and the host computer display module; and the DC external power supply is used for supplying power to the ECU module and the host computer display module.

[0012] Further, the vehicle-mounted hydrogen supply system electrical component comprehensive detection tool, wherein the ECU module is signal connected with the host computer display module through a CAN communication module.

[0013] Further, the vehicle-mounted hydrogen supply system electrical component comprehensive detection tool, wherein the tool further comprises an auxiliary test tool, the auxiliary test tool comprises a gas-driven pressure device, a pipeline one, a pipeline two, a hydrogen detector and a detection liquid; one end of the pipeline one is connected with a gas inlet and outlet mechanical interface of the electrical component; the other end of the pipeline one is connected with a gas outlet of the gas-driven pressure device; a one-way valve, a high-pressure digital pressure gauge and a ball valve one are arranged on the pipeline one; one end of the pipeline two is connected with another gas inlet and outlet mechanical interface of the electrical component; a ball valve two is arranged on the pipeline two; the hydrogen detector is used for observation and judgment after pressure boosting; and the detection liquid is used for observation and judgment after pressure boosting.

[0014] Further, the vehicle-mounted hydrogen supply system electrical component comprehensive detection tool, wherein the one-way valve, the ball valve one and the high-pressure digital pressure gauge are sequentially arranged on the pipeline one in the direction of pressurized gas inlet.

[0015] Further, the vehicle-mounted hydrogen supply system electrical component comprehensive detection tool, wherein the gas-driven pressure device is provided with a high-pressure mechanical pressure gauge and a low-pressure mechanical pressure gauge used for observation during pressure boosting and calibration comparison during pressure test.

[0016] Through the implementation of the above technical scheme, the vehicle-mounted hydrogen supply system electrical component comprehensive detection tool has the following advantages: (1) the tool can display data and provide preliminary judgment; (2) when incoming materials are stored in a warehouse, the electrical components can be detected before assembly, so that electrical component faults can be found in time, the qualified rate of the incoming materials is effectively improved, and the time for replacement and debugging is saved; after assembly, the tool can also be used for preliminary and simple troubleshooting of faulty electrical components, so that terminal loss is reduced; (3) the tool is simple to operate and has high automation, and is convenient for personnel to quickly analyze and judge whether the basic function of the electrical component meets the requirements; (4) during brand testing, when the brand of the material is replaced due to a procurement cycle or other reasons, the tool can be used for simple access verification of the electrical component, so that the advantages and disadvantages of the electrical component and the original brand are accurately judged, and the tool is also used for preliminary matching with the hydrogen supply system, so that the safety of the equipment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1This is a schematic diagram illustrating the structural principle of a comprehensive testing fixture for electrical components of an on-board hydrogen supply system as described in this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, the comprehensive testing fixture for electrical components of an on-board hydrogen supply system includes: an external wiring harness port 1 and a computing and display device 2;

[0020] The external wiring harness port 1 includes: several external bottle valve ports 101 for matching bottle valve inserts, wherein the external bottle valve ports 101 are selected as Deutsch DTM04-4P; and several external solenoid valve ports 102 for matching solenoid valve inserts, wherein the external solenoid valve ports 102 are selected as AMP. 282080-1; Several high / low pressure sensor external ports 103 for matching high pressure sensor plug-ins and low pressure sensor plug-ins, the high / low pressure sensor external ports 103 are selected as DJ7034Y-1.5-21; Several hydrogen concentration sensor external ports 104 for matching hydrogen concentration sensor plug-ins, the hydrogen concentration sensor external ports 104 are selected as AMP282090-1; Several hydrogen storage controller external ports 105 for matching hydrogen system communication interface plug-ins for hydrogen storage controllers, the hydrogen storage controller external ports 105 are selected as AMP282087-1; and Several hydrogen storage controller external ports 106 for matching power interface plug-ins for hydrogen storage controllers, the hydrogen storage controller external ports 106 are selected as AMP282088-1;

[0021] The computing and display device 2 includes: an ECU module 21, a DC external power supply 22, and a host computer display module 23; the ECU module 21 is used for data processing and analysis, and the ECU module 21 is electrically connected to the external wiring harness port 1, the DC external power supply 22, and the host computer display module 23. The ECU module 21 is connected to the host computer display module 23 via a CAN communication module 24, and the DC external power supply 22 is used to supply power to the ECU module 21 and the host computer display module 23.

[0022] Also include auxiliary test tooling, the auxiliary test tooling includes: gas drive pressurizing device 3, pipeline one 4, pipeline two 5, hydrogen detector and detection liquid, the gas drive pressurizing device 3 is used to cooperate the pressure detection or determination when needed when testing, the one end of the pipeline one 4 is used to connect the gas inlet and outlet mechanical interface 1001 of electrical component 100, the other end of the pipeline one 4 is connected with the gas outlet of gas drive pressurizing device 3, one-way valve 6, high-pressure digital pressure gauge 7 and ball valve one 8 are arranged on the pipeline one 4, one-way valve 6, ball valve one 8 and high-pressure digital pressure gauge 7 are installed on the pipeline one 4 in turn along the pressurized gas inlet direction, the high-pressure digital pressure gauge 7 is used to observe when pressurizing and calibrate when pressure test; one end of the pipeline two 5 is used to connect another gas inlet and outlet mechanical interface 1002 of electrical component, ball valve two 9 is arranged on the pipeline two 5, the hydrogen detector is used to observe and determine when hydrogen detection after pressurizing, the detection liquid is used to observe and determine when bubble method detection after pressurizing; high-pressure mechanical pressure gauge 10 and low-pressure mechanical pressure gauge 11 are arranged on the gas drive pressurizing device 3; the high-pressure mechanical pressure gauge 10 is used to observe when pressurizing and calibrate when pressure test, the low-pressure mechanical pressure gauge 11 is used to observe when pressurizing and compare when pressure test;

[0023] The detection method when detecting and troubleshooting the electrical component is:

[0024] S1: DC external power supply 22 is powered on, and the operation display device 2 is started;

[0025] S2: the electrical end interface 1003 of the electrical component 100 to be detected is connected with a matching external wire harness port, whether the electrical end interface 1003 of the electrical component 100 to be detected can be easily plugged and unplugged is observed and judged, if it can be successfully plugged and unplugged repeatedly for not less than 2 times, then step S3 is executed, if it cannot be successfully plugged and unplugged repeatedly for not less than 2 times, then it is judged that the electrical component 100 to be detected is unqualified;

[0026] S3: after the electrical end interface 1003 of the electrical component 100 to be detected is plugged and connected with the external wire harness port for the last time, 3S is waited, then whether the screen corresponding to the port on the host computer display module 23 changes from red in the initial non-connected state to green in the connected state is observed, if the color change is displayed, then step S4 is executed, if the color change cannot be displayed, then step S5 is executed;

[0027] S4: In the case of a direct electrical interface, the bottle valve should be turned on and a clear solenoid opening sound should be heard, accompanied by a screen display of the real-time ambient temperature; the solenoid should be turned on and a clear solenoid opening sound should be heard; the high-pressure pressure sensor and the low-pressure pressure sensor should be turned on, accompanied by a screen display of 0+0.1 MPa real-time gauge pressure; the hydrogen concentration sensor should be turned on, accompanied by a screen display of 0 or 500 PPM initial concentration; if it can be displayed, it is determined that the initial inspection of the electrical part under test is qualified, if the screen cannot be displayed, step S5 is performed; since the hydrogen storage controller and the wiring harness are generally made by the same manufacturer, the probability of physical damage is small, so only S2 is performed for this part;

[0028] S5: Remove the external wiring harness port connected to the electrical part under test 100, and replace it with another matching external wiring harness port after 5S and jump to S3, if the electrical part under test 100 is connected to all matching external wiring harness ports, the screen cannot be displayed, and it is determined that the electrical part under test 100 is unqualified.

[0029] The method for testing the brand of the bottle valve is:

[0030] S1: Connect one of the bottle valve's gas inlet and outlet mechanical interfaces 1001 to pipeline one 4, connect the other of the bottle valve's gas inlet and outlet mechanical interfaces 1002 to pipeline two 5, and connect the bottle valve's electrical end interface 1003 to the bottle valve external connection port 101 of the external wiring harness port 1;

[0031] S2: Power on the DC external power supply 22, start the operation display device 21, select the bottle valve test interface on the screen of the upper computer display module 23, the screen displays the real-time ambient temperature, and the solenoid is turned on and opened with the sound of the manual shut-off valve being closed;

[0032] S3: The gas-driven pressure device 3 slowly increases the pressure of the entire test pipeline to 5 MPa with the high-pressure mechanical pressure gauge 10 as the reference value, and then stands still for 2 minutes;

[0033] S4: Then, the mechanical interface connection and the overall electrical part are subjected to air tightness detection, and the sealing performance of the connection and the overall electrical part is determined. When the pressure medium is nitrogen, the bubble method is used for detection, and the node leakage rate is <1 bubble / 3 minutes; when the pressure medium is hydrogen, the hydrogen detector is used for detection, and the node leakage rate is ≤10 PPM;

[0034] S5: Operate the gas-driven pressure device 3 to continue to slowly increase the pressure of the entire test pipeline to 10 MPa of the high-pressure mechanical pressure gauge 10, then stand still for 2 minutes, and then perform air tightness detection again; when the pressure medium is nitrogen, the bubble method is used for detection, and the node leakage rate is <1 bubble / 3 minutes; when the pressure medium is hydrogen, the hydrogen detector is used for detection, and the node leakage rate is ≤10 PPM;

[0035] S6: Operate the gas drive pressure device 3 to increase the pressure of the entire test pipeline from 10 MPa by every 5 MPa to 40 MPa, and finally to 43.75+0.5 MPa, and perform gas tightness detection under each pressure state respectively; disconnect the integrated test tool, open the manual stop valve, and no gas should overflow; reconnect and there should be gas overflow, which meets the requirements of gas filling during power-off and discharging during power-on;

[0036] S7: Open the manual stop valve at the bottle opening valve to discharge pressure, and observe whether it can be effectively cut off, and the opening and closing torque ≤8 N.m is qualified; at the same time, observe whether the gas outlet is stable and no abnormality is qualified; record the time when the pressure of the high-pressure digital pressure gauge 7 is discharged to 1 MPa, and the test tool internal volume / time flow rate ≥800 Slpm is qualified;

[0037] S8: Repeat S2-S7 for retesting, and the number of times of increasing pressure medium nitrogen and hydrogen is not less than 5 times respectively;

[0038] The closer the quantitative values of the above tests are, the better the consistency is, and the closer the performance is to the original brand, the better it is.

[0039] The method for testing the electromagnetic valve is as follows:

[0040] S1: Connect one of the inlet and outlet gas mechanical interfaces 1001 of the electromagnetic valve to pipeline one 4, connect the other inlet and outlet gas mechanical interface 1002 of the electromagnetic valve to pipeline two 5, and connect the electrical interface 1003 of the electromagnetic valve to the electromagnetic valve external port 102 of the external wiring harness port 1;

[0041] S2: Power on the DC external power supply 22, start the operation display device 21, and select the electromagnetic valve test interface on the screen of the upper computer display module 23, which should be accompanied by the sound of the electromagnetic valve being powered on, and the response time of the power-on ≤1S is qualified;

[0042] S3: Select the low-pressure mechanical pressure gauge 11 on the gas drive pressure device 3, and then slowly increase the pressure of the entire test pipeline to 2.5 MPa by operating the gas drive pressure device 3, and the value of the low-pressure mechanical pressure gauge 11 is used as the reference, and then stand for 2 min;

[0043] S4: Perform gas tightness detection on the mechanical interface connection and the entire electrical component to determine the sealing performance of the connection and the entire component; when the pressure increasing medium is nitrogen, use the bubble method for detection, and the node leakage rate <1 bubble / 3 min is qualified; when the pressure increasing medium is hydrogen, use the hydrogen detector for detection, and the node leakage rate ≤10 PPM is qualified;

[0044] S5: disconnect the integrated test tool connection, and then open the ball valve 9. At this time, stop when there is a slight gas overflow, and record the value of the high-pressure digital pressure gauge 7. After 2 minutes, record the value of the high-pressure digital pressure gauge 7 again. Both values are qualified if they are within 2.4+0.1 MPa. After reconnection, there should be rapid gas overflow to P2, and the value is 0+0.1 MPa. Close the ball valve 9.

[0045] S6: Repeat S2-S5 to perform retesting. The number of times of pressure increase of the nitrogen and hydrogen pressure mediums should not be less than 5 times.

[0046] The closer the quantitative values of the above tests are to consistency, the better they are, and the closer they are to the original brand performance, the better they are.

[0047] The method for testing low-pressure pressure sensors is as follows:

[0048] S1: Connect the low-pressure pressure sensor X1 to the pipeline 4 through the mechanical gas interface 1001, connect the low-pressure pressure sensor to the pipeline 5 through the mechanical gas interface 1002, and connect the electrical interface 1003 of the low-pressure pressure sensor to the high / low-pressure sensor external port 103 of the external wiring harness port 1.

[0049] S2: Power on the DC external power supply 22, start the operation display device 21, select the pressure sensor test interface on the screen of the upper computer display module 23, then select and set the range to 2.5 MPa, and click "Run". At this time, the screen displays the real-time pressure of 0+0.1 MPa.

[0050] S3: Select the low-pressure mechanical pressure gauge 1 on the gas-driven pressure device and install it. Then, operate the gas-driven pressure device 3 to slowly increase the pressure of the entire test pipeline to 2.5 MPa, and use the value of the low-pressure mechanical pressure gauge 1 as the reference. Then, stand for 2 minutes.

[0051] S4: Then, perform airtightness detection on the mechanical interface connection and the entire electrical component to determine the sealing performance of the connection and the entire component. When the pressure medium is nitrogen, use the bubble method for detection, and the node leakage rate should be less than 1 bubble per 3 minutes. When the pressure medium is hydrogen, use a hydrogen detector for detection, and the node leakage rate should be less than or equal to 10 PPM.

[0052] S5: Open the ball valve 9 to slowly release the pressure until the pressure of the high-pressure digital pressure gauge 7 is 2 MPa. Then, stand for 2 minutes and record the real-time value.

[0053] S6: Open the ball valve 9 to slowly release the pressure until the pressure of the high-pressure digital pressure gauge 7 is 1.5 MPa, 1 MPa, and 0.5 MPa, respectively. Record the real-time value at each time.

[0054] S7: Repeat S2-S5 to perform retesting, the number of times of the boosting medium nitrogen and hydrogen is not less than 2 times respectively, and the real-time value of the low-pressure pressure sensor X1 to be tested is recorded;

[0055] S8: Steps S1-S7 are performed on the low-pressure pressure sensor X2 to be tested and the low-pressure pressure sensor X3, and the real-time values of the low-pressure pressure sensor X2 to be tested, the low-pressure pressure sensor X3, and the high-pressure digital pressure gauge 7 are recorded;

[0056] The values of X1 and X2 are compared with each other to determine the consistency performance, and the closer the better; the values of X1 and X2 are compared with the values of X3 and the high-pressure digital pressure gauge to determine the linear precision performance, and the smaller the better.

[0057] The method for brand testing of the high-pressure pressure sensor is as follows:

[0058] S1: Connect the pipe 1 4 to the mechanical interface 1001 of the high-pressure pressure sensor X1 to be tested, connect the pipe 2 5 to the other mechanical interface 1002 of the high-pressure pressure sensor, and connect the electrical interface 1003 of the high-pressure pressure sensor to the high / low-pressure pressure sensor external port 103 of the external wiring harness port 1;

[0059] S2: Turn on the DC external power supply 22, start the operation display device 21, select the pressure sensor test interface on the screen of the upper computer display module 23, then select and set the range to 45 MPa, and click “run”. At this time, the screen displays the real-time gauge pressure of 0+0.1 MPa;

[0060] S3: Select and install the high-pressure mechanical pressure gauge 10 on the air-driven pressure device, then slowly increase the pressure of the entire test pipeline to 5 MPa by operating the air-driven pressure device 3, and use the value of the high-pressure mechanical pressure gauge 10 as the standard, and then stand for 2 min;

[0061] S4: Then perform air tightness detection on the mechanical interface connection and the entire electrical component to determine the sealing performance of the connection and the entire component. When the boosting medium is nitrogen, use the bubble method for detection, and the node leakage rate is less than 1 bubble / 3 min to be qualified. When the boosting medium is hydrogen, use the hydrogen detector for detection, and the node leakage rate is less than or equal to 10 PPM to be qualified;

[0062] S5: Continue to increase the pressure of the entire test pipeline from 15 MPa to 40 MPa every 5 MPa by operating the air-driven pressure device, then record the real-time value after standing for 2 min;

[0063] S6: Repeat S2-S5 to perform retesting, the number of times of the boosting medium nitrogen and hydrogen is not less than 2 times respectively, and the real-time value of the high-pressure pressure sensor X1 to be tested is recorded;

[0064] S7: execute steps S1-S6 on the to-be-tested high-pressure pressure sensor X2 and the reference high-pressure pressure sensor X3, and record the real-time values of the to-be-tested high-pressure pressure sensor X2, the reference high-pressure pressure sensor X3 and the high-pressure digital pressure gauge 7;

[0065] Compare the values of X1 and X2 with each other, judge the consistency performance, the closer the better; compare the values of X1 and X2 with the values of X3 and the high-pressure digital pressure gauge respectively, judge the linear precision performance, the smaller the better.

[0066] The method for brand testing of the hydrogen concentration sensor is as follows:

[0067] S1: connect the pipeline 1 4 to one of the gas inlet and outlet mechanical interfaces 1001 of the hydrogen concentration sensor, connect the pipeline 2 5 to the other gas inlet and outlet mechanical interface 1002 of the hydrogen concentration sensor, and connect the electrical interface 1003 of the hydrogen concentration sensor to the hydrogen concentration sensor external port 104 of the external wiring harness port 1;

[0068] S2: power on the DC external power supply 22, start the operation display device 21, and select the hydrogen concentration sensor test interface on the screen of the upper computer display module 23, at this time the screen displays an initial concentration of 0 or 500 PPM;

[0069] S3: select the low-pressure mechanical pressure gauge 11 on the gas-driven pressure device 3, then operate the gas-driven pressure device to slowly increase the pressure of the entire test pipeline to 2.5 MPa using the pressure medium hydrogen, and take the value of the low-pressure mechanical pressure gauge 11 as the standard, then stand for 2 min;

[0070] S4: slowly open the ball valve 2 9, slowly release the hydrogen to the value of 2 MPa of the high-pressure digital pressure gauge 7, then open the handheld hydrogen detector to synchronously detect the hydrogen around the hydrogen storage controller for not less than 10 s, and the error is ≤1000 PPM to be qualified;

[0071] S5: slowly open the ball valve 2 9, slowly release the hydrogen to the values of 1.5 MPa, 1 MPa and 0.5 MPa of the high-pressure digital pressure gauge 7 respectively, and record the real-time values;

[0072] S6: repeat S2-S5 to perform retesting, and the number of times is not less than 2 times;

[0073] The closer the quantitative values of the above detection are, the better the consistency is, and the closer the performance is compared with the original brand, the better.

[0074] The utility model discloses the advantages are: (1) can show data and can provide preliminary judgment, (2) when the incoming material warehousing qualified detection, can detect electrical spare before electrical spare assembly, and timely discovery electrical spare fault, effectively improved the qualified rate of electrical spare incoming material warehousing, saved back and forth replacement and debugging time, time -saving laborsaving, and also can carry out preliminary simple investigation to the fault electrical spare after assembly, reduces terminal loss, (3) simple operation, high degree of automation, convenient for personnel quick analysis and judgment electrical spare basic function's satisfaction or not, (4) in the brand test stage, when the replacement of material brand when purchasing cycle etc. other reasons occur, can carry out simple access nature verification to electrical spare, accurately judge its and the pros and cons of original brand performance, in addition, preliminary matching is carried out with hydrogen supply system, provides the guarantee for equipment safety smooth operation.

[0075] The above only is the preferred embodiment of the utility model, is not any other form's limitation to the utility model, and any modification or equivalent change made according to the technical essence of the utility model still belongs to the range of the utility model claimed to be protected.

Claims

1. A comprehensive testing fixture for electrical components of an on-board hydrogen supply system, characterized in that: Includes external wiring harness ports and a computing display device; The external wiring harness ports include: a plurality of bottle valve external ports for matching bottle valve plug-ins, a plurality of solenoid valve external ports for matching solenoid valve plug-ins, a plurality of high / low pressure sensor external ports for matching high pressure sensor plug-ins and low pressure sensor plug-ins, a plurality of hydrogen concentration sensor external ports for matching hydrogen concentration sensor plug-ins, a plurality of hydrogen storage controller external ports one for matching hydrogen system communication interface plug-ins for matching hydrogen storage controllers, and a plurality of hydrogen storage controller external ports two for matching power interface plug-ins for matching hydrogen storage controllers. The computing and display device includes: an ECU module, an external DC power supply, and a host computer display module; the ECU module is electrically connected to the external wiring harness port, the external DC power supply, and the host computer display module, and the external DC power supply is used to power the ECU module and the host computer display module.

2. The comprehensive testing fixture for electrical components of an on-board hydrogen supply system according to claim 1, characterized in that: The ECU module is connected to the host computer display module via a CAN communication module.

3. A comprehensive testing fixture for electrical components of an on-board hydrogen supply system according to claim 1 or 2, characterized in that: It also includes auxiliary testing fixtures, which include: a gas-driven pressurization device, a first pipeline, a second pipeline, a hydrogen detector, and a testing liquid. One end of the first pipeline is used to connect to an inlet / outlet mechanical interface of the electrical component, and the other end of the first pipeline is connected to the outlet of the gas-driven pressurization device. A one-way valve, a high-pressure digital display pressure gauge, and a ball valve are installed on the first pipeline. One end of the second pipeline is used to connect to another inlet / outlet mechanical interface of the electrical component, and a ball valve is installed on the second pipeline. The hydrogen detector is used for observation and judgment during hydrogen detection after pressurization, and the testing liquid is used for observation and judgment during bubble method detection after pressurization.

4. The comprehensive testing fixture for electrical components of an on-board hydrogen supply system according to claim 3, characterized in that: One-way valve, ball valve 1, and high-pressure digital display pressure gauge are installed sequentially on pipeline 1 along the pressurization and air intake direction.

5. The comprehensive testing fixture for electrical components of an on-board hydrogen supply system according to claim 3, characterized in that: The pneumatic pressurization device is equipped with a high-pressure mechanical pressure gauge and a low-pressure mechanical pressure gauge.

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