Vehicle grounding failure test system and vehicle

Abstract

The utility model discloses a vehicle grounding failure test system and a vehicle, the vehicle grounding failure test system comprises a plurality of load circuits, the plurality of load circuits are connected in parallel between a storage battery and a vehicle body ground, and each load circuit is provided with a single-pole double-throw switch; the grounding failure test module comprises a plurality of test circuits, the plurality of test circuits are connected with the vehicle body ground, and each test circuit comprises a diode and an indicating lamp which are connected in series; the plurality of test circuits and the plurality of load circuits are in one-to-one correspondence and are selectively conducted through the corresponding single-pole double-throw switches, and the diodes are arranged to be in one-way conduction towards the corresponding load circuits. According to the vehicle grounding failure test system of the embodiment of the utility model, the test result can be visually displayed, the test result can be obtained by directly observing the indicating lamp of the device, and the reason of the problem can be positioned only by disconnecting the switch during troubleshooting.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle ground failure test system and a vehicle. Background Art

[0002] The ground failure test verifies whether the vehicle performance is consistent with the design by testing the working conditions of the vehicle engine, starter and each load in the ground point circuit after the ground point is disconnected. The usual test procedure is to disconnect the load grounding wire and then observe whether the corresponding load fails as expected.

[0003] However, it is not easy to observe whether some loads are working, and there are no obvious signs like car headlights or audio, and it is not easy to troubleshoot the problem. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a vehicle ground failure test system, which can intuitively display the test results. The test results can be obtained by directly observing the indicator light of the device. When troubleshooting the problem, it is only necessary to disconnect the switch to locate the cause of the problem.

[0005] According to the vehicle ground failure test system of the embodiment of the utility model, it includes: multiple load circuits, multiple load circuits are connected in parallel between the battery and the vehicle body ground, and each of the load circuits is provided with a single-pole double-set switch; a ground failure test module, the ground failure test module includes multiple test circuits, multiple test circuits are connected to the vehicle body ground, each test circuit includes a diode and an indicator light connected in series, and multiple test circuits correspond one-to-one to multiple load circuits and are selectively turned on through corresponding single-pole double-set switches, and the diode is configured to be unidirectionally conducted toward the corresponding load circuit.

[0006] According to the vehicle ground failure test system of the embodiment of the utility model, the single-pole double-position switch of the load circuit is disconnected and connected to the test circuit. When the test is qualified, the indicator light of the test circuit is not on; when the test is unqualified, that is, when the disconnected load circuit and other non-disconnected load circuits have a dark circuit, the disconnected load circuit is equivalent to not being disconnected, and the indicator light is on. In this way, the test method of the vehicle ground failure test system can be simple, which is convenient for clearly observing the test phenomenon, can intuitively judge the test results, reduce the difficulty of operation, and facilitate problem troubleshooting.

[0007] According to the vehicle ground failure test system of the embodiment of the utility model, the ground failure test module also includes a main connection circuit, one end of each of the test circuits is selectively connected to the corresponding load circuit, and the other ends of each of the test circuits are connected to the vehicle body ground through the main connection circuit.

[0008] According to the vehicle ground failure test system of the embodiment of the utility model, the main connection circuit is connected in series with a start switch and a device power supply, the start switch is used to control the start of the ground failure test module, and the device power supply is used to power the indicator light.

[0009] According to the vehicle ground failure test system of the embodiment of the utility model, the indicator light in each of the test circuits is located between the diode and the corresponding load circuit.

[0010] According to the vehicle ground failure test system of the embodiment of the utility model, the load circuit includes a first section and a second section that are separated from each other, and the first section is electrically connected to the battery, and the second section is connected to the vehicle body ground;

[0011] The single-pole double-set switch includes a fixed end and a movable end, the fixed end is connected to the first section, and the movable end is movable relative to the fixed end to selectively electrically connect to the second section or the test circuit.

[0012] According to the vehicle ground failure test system of the embodiment of the utility model, the load unit in each of the load circuits is arranged in the corresponding first section.

[0013] According to the vehicle ground failure test system of the embodiment of the utility model, it also includes a load main connection circuit, one end of a plurality of load circuits is connected to the load main connection circuit and the other end is respectively connected to the vehicle body ground, and the other end of the load main connection circuit is connected to the positive electrode of the battery.

[0014] According to the vehicle ground failure test system of the embodiment of the utility model, the negative electrode of the battery is connected to the vehicle body ground through the negative electrode grounding wire, and one end of the multiple load circuits is connected to the positive electrode of the battery and the other end is connected to the vehicle body ground.

[0015] According to the vehicle ground failure test system of the embodiment of the utility model, the multiple load circuits and the multiple test circuits correspond one to one and can be set to 20-30 groups.

[0016] The embodiment of the utility model further discloses a vehicle, comprising the above-mentioned vehicle ground failure test system.

[0017] The advantages of the vehicle described above compared to the prior art and the advantages of the vehicle ground failure test system described above compared to the prior art are the same, which will not be elaborated here.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of a vehicle ground failure test system according to an embodiment of the utility model;

[0021] Reference numerals:

[0022] Vehicle ground failure test system 100,

[0023] Ground failure test module 101, load circuit 1, first section 11, second section 12, load unit 13, test circuit 2, indicator light 3, diode 4, main connection circuit 5, device power supply 51, start switch 52, single-pole double-set switch 6, fixed end 61, movable end 62, load main connection circuit 7, battery 8, vehicle body ground 9, negative grounding wire 10. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] Reference below Figure 1 A vehicle ground failure test system 100 according to an embodiment of the utility model is described. By disconnecting the single-pole double-position switch 6 of the load circuit 1 and connecting it to the test circuit 2, when the test is qualified, the indicator light 3 of the test circuit 2 is not lit; when the test is unqualified, that is, when a dark loop exists between the disconnected load circuit 1 and other non-disconnected load circuits 1, the disconnected load circuit 1 is equivalent to not being disconnected, and the indicator light 3 is lit. In this way, the test method of the vehicle ground failure test system 100 can be simple, which is convenient for clearly observing the test phenomenon, can intuitively judge the test result, reduce the difficulty of operation, and facilitate problem troubleshooting.

[0026] like Figure 1 As shown, a vehicle ground failure test system 100 according to an embodiment of the utility model includes: a plurality of load circuits 1 and a ground failure test module 101 .

[0027] Among them, multiple load circuits 1 are connected in parallel between the battery 8 and the vehicle body ground 9, and each load circuit 1 is provided with a single-pole double-set switch 6; the ground failure test module 101 includes multiple test circuits 2, and the multiple test circuits 2 are all connected to the vehicle body ground 9. Each test circuit 2 includes a diode 4 and an indicator light 3 connected in series, and the multiple test circuits 2 correspond one-to-one to the multiple load circuits 1 and are selectively turned on through the corresponding single-pole double-set switches 6, and the diode 4 is set to be unidirectionally conductive toward the corresponding load circuit 1.

[0028] In practice, multiple load circuits 1 are connected in parallel with the battery 8 and the vehicle body ground 9, and the position connected to the vehicle body is the metal material of the vehicle body. The vehicle body ground 9 is connected to one electrode of the battery 8 through a grounding wire. When one end of the load circuit 1 is connected to one electrode of the battery 8 and the other end is connected to the vehicle body ground 9, it is equivalent to the load circuit 1 being connected to the two electrodes of the battery 8. When the load circuit 1 is powered on, the load unit 13 controlled in the load circuit 1 can be powered on and work normally. Each load circuit 1 is provided with a load unit 13, which can be a relay, a motor, a speaker, a car light, a wiper, a heating wire, various controllers and other components.

[0029] Among them, multiple test circuits 2 are connected to multiple load circuits 1 in a one-to-one correspondence, and each test circuit 2 is provided with an indicator light 3 and a diode 4. The diode 4 allows the current of the test circuit 2 to flow only from the direction of the indicator light 3 to the load circuit 1 and cannot flow in the reverse direction, thereby preventing the currents of the multiple test circuits 2 from affecting each other and maintaining the independence of each test circuit 2.

[0030] Assumptions Figure 1 The test circuits 2 in the figure are test circuit No. 1, test circuit No. 2, test circuit No. 3, etc. from top to bottom, and the load circuits 1 are load circuit No. 1, load circuit No. 2, load circuit No. 3, etc. from left to right; if all the load circuits 1 are connected at first, that is, the single-pole double-set switch 6 of each load circuit 1 is not connected to the corresponding test circuit 2, but is used to connect the corresponding load circuit 1, when the test is carried out, when the single-pole double-set switch 6 of load circuit No. 1 is disconnected and connected to test circuit No. 2, the indicator light 3 is not on, that is, load circuit No. 1 is disconnected, the indicator light 3 is not on, and the test is qualified; the vehicle body ground 9 is equivalent to an electrode of the power supply, and the indicator light 3 is not on because the indicator light 3 is only connected to one electrode of the power supply and is not connected to the vehicle body ground 9.

[0031] When there is a dark loop between the No. 1 load circuit and the No. 2 load circuit, that is, the No. 1 load circuit is connected to the No. 2 load circuit, then when the single-pole double-position switch 6 of the No. 1 load circuit is disconnected and connected to the No. 1 test circuit, the indicator light 3 of the No. 1 test circuit is lit. The indicator light 3 is lit because there is a dark loop between the No. 1 load circuit and the No. 2 load circuit, and the No. 1 load circuit is connected to the No. 2 load circuit through the dark loop and then connected to the vehicle body ground 9. At this time, one end of the indicator light 3 of the No. 1 test circuit 2 is connected to the power supply and the other end is connected to the vehicle body ground 9, and the indicator light 3 can be lights up; when the No. 2 load circuit 1 is disconnected, the indicator light 3 of the No. 1 test circuit 2 becomes off; therefore, the lighting of the indicator light 3 of the test circuit 2 can determine that there is a dark circuit between the No. 1 load circuit 1 and the No. 2 load circuit 1, and the problem can be troubleshooting; similarly, when there is a dark circuit between the No. 1 load circuit 1 and the No. 3 load circuit 1, the indicator light 3 lights up, and when the single-pole double-set switch 6 of the No. 3 load circuit 1 is disconnected, that is, switched to the No. 3 test circuit 2, then one end of the indicator light 3 of the No. 1 test circuit 2 cannot be connected to the vehicle body ground 9, and the indicator light 3 does not light up.

[0032] The vehicle ground failure test system 100 of the embodiment of the utility model is suitable for all vehicles that need to undergo a ground failure test. The implementation method is simple, and it is convenient to clearly observe the test phenomenon. The test result can be obtained by directly observing the indicator light 3 of the device. When troubleshooting, it is only necessary to disconnect the single-pole double-position switch 6 to locate the cause of the problem, which reduces the difficulty of operation and facilitates problem troubleshooting.

[0033] In some embodiments, the ground failure test module 101 also includes a main connection circuit 5, one end of each of the multiple test circuits 2 is selectively connected to the corresponding load circuit 1, and the other ends of each of the multiple test circuits 2 are connected to the vehicle body ground 9 through the main connection circuit 5.

[0034] In practice, multiple test circuits 2 of the grounding test module can be connected to the vehicle body ground 9 through one circuit through the main connection circuit 5. This reduces the number of lines connecting multiple test circuits 2 in the grounding failure test module 101 to the vehicle body ground 9, saves circuits, and saves connection positions for the vehicle body ground 9. At the same time, it makes the lines of the grounding test module more tidy, and also facilitates the selective connection of the grounding test module with the load circuit 1 of the vehicle during the test. When the grounding test module is not in use, the main connection circuit 5 has only one connection point with the vehicle body ground 9, which is easy to dismantle and the steps are simple.

[0035] In some embodiments, the main connection circuit 5 is connected in series with a start switch 52 and a device power supply 51 , the start switch 52 is used to control the start of the ground failure test module 101 , and the device power supply 51 is used to supply power to the indicator light 3 .

[0036] In practice, the main connection circuit 5 is provided with a starting switch 52 and a device power supply 51 connected in series. The device power supply 51 can supply power to the indicator lights 3 of the multiple test circuits 2, that is, one end of the indicator lights 3 of the multiple test circuits 2 is connected to an electrode of the device power supply 51, and when the other end of the indicator lights 3 of the multiple test circuits 2 is connected to the vehicle body ground 9, it is equivalent to connecting to another electrode, and the indicator lights 3 are lit. When the other end of the indicator light 3 is connected to the load circuit 1 corresponding to the vehicle and connected to the battery 8 of the vehicle, the two ends of the indicator light 3 are connected to the same pole, and the indicator light 3 is not lit. Therefore, the device power supply 51 is used to supply power to the indicator light 3 of the ground failure test module 101, and the starting switch 52 can put the ground failure test module 101 in a starting test state. When the starting switch 52 is turned off, the indicator light 3 of the test module cannot form a complete circuit, and the test cannot be performed. Therefore, the starting switch 52 is used to control whether the failure test module works or not.

[0037] In some embodiments, the indicator light 3 in each test circuit 2 is located between the diode 4 and the corresponding load circuit 1 .

[0038] In practice, the indicator light 3 is set between the diode 4 and the corresponding load circuit 1, so that the direction of the current can be controlled to flow only from the direction of the indicator light 3 to the direction of the load circuit 1, that is, from the positive pole to the negative pole. Then the vehicle body ground 9 is equivalent to the negative pole, and it can also prevent the current between adjacent test circuits 2 from being conducted and affecting each other.

[0039] In some embodiments, the load circuit 1 includes a first section 11 and a second section 12 separated from each other, and the first section 11 is electrically connected to the battery 8, and the second section 12 is connected to the vehicle body ground 9; the single-pole double-position switch 6 includes a fixed end 61 and a movable end 62, the fixed end 61 is connected to the first section 11, and the movable end 62 is movable relative to the fixed end 61 to selectively electrically connect to the second section 12 or the test circuit 2.

[0040] Among them, the first paragraph 11 is Figure 1 The upper section of the load circuit 1, the second section 12 is a section close to the vehicle body ground 9. When the load circuit 1 is connected, the active end 62 of the single-pole double-position switch 6 is moved to the corresponding second section 12 position of the load circuit 1, so that the load circuit 1 is connected, and the load unit 13 of the load circuit 1 works normally. When the load circuit 1 is disconnected, the active end 62 is moved to the test circuit 2 position corresponding to the load circuit 1, then the load unit 13 of the load circuit 1 cannot be connected to the vehicle body ground 9, and the load unit 13 cannot work. By setting the single-pole double-position switch 6, the power supply can be controlled to be output to the load circuit 1 and the test circuit 2 respectively. While controlling the load circuit 1 to be disconnected, the single-pole double-position switch 6 is moved to be connected to the corresponding test circuit 2, and the on-off of the load circuit 1 or whether there is a dark circuit can be judged by the indicator light 3 of the test circuit 2.

[0041] In some embodiments, the load unit 13 in each load circuit 1 is disposed in the corresponding first section 11 .

[0042] In practice, the load unit 13 is set in the first section 11 of the load circuit 1. When the load circuit 1 is disconnected, the single-pole double-set switch 6 is switched to the corresponding test circuit 2. At this time, the load unit 13 located in the first section 11 of the load circuit 1 is equivalent to a resistor, and the two ends of the indicator light 3 are respectively connected to the same pole of the battery 8 and the device power supply 51. The resistance formed by the load unit 13 can reduce the overheating caused by connecting the two ends of the indicator light 3 to the same pole.

[0043] In some embodiments, the vehicle ground failure test system also includes a load main connection circuit 7, one end of multiple load circuits 1 are connected to the load main connection circuit 7 and the other ends are respectively connected to the vehicle body ground 9, and the other end of the load main connection circuit 7 is connected to the positive pole of the battery 8.

[0044] In practice, connecting the power supply through the load main connection circuit 7 can reduce the line length of each load circuit 1 connected to the power supply, save lines, and make the connection of multiple load circuits 1 to the battery 8 more orderly, reducing the setting of power connection ports. At the same time, the load unit 13 of the vehicle is far away from the battery 8, which is not convenient for direct connection to the battery 8. The load unit 13 can be connected to the load main connection circuit 7, so that the load main connection circuit 7 can be connected to the battery 8.

[0045] In some embodiments, the negative electrode of the battery 8 is connected to the vehicle body ground 9 via a negative electrode grounding wire 10 , and one end of the plurality of load circuits 1 is connected to the positive electrode of the battery 8 and the other end is connected to the vehicle body ground 9 .

[0046] In practice, the negative electrode of the battery 8 is connected to the metal material of the vehicle body 9, so that the metal material of the vehicle body constitutes the negative electrode of the power supply, the positive electrode of the battery 8 is connected to one end of the load circuit 1, and the other end of the load circuit 1 is connected to the vehicle body 9, which is equivalent to connecting the negative electrode of the battery 8. At the same time, the device power supply 51 is connected to the vehicle body 9. Figure 1 The left side is the negative pole, which is connected to the vehicle body ground 9, and the device power supply 51 is Figure 1 The right side is the positive pole, which is connected to the diode 4 and the indicator light 3 of the test circuit 2. When the single-pole double-position switch 6 disconnects the load circuit 1 and is connected to the corresponding test circuit 2, the indicator light 3 does not light up. This is because the two ends of the indicator light 3 are respectively connected to the positive pole of the device power supply 51 and the positive pole of the battery 8, and the negative pole is not connected, that is, it is not connected to the vehicle body ground 9. When there is a dark loop between the No. 1 load circuit 1 and the No. 2 load circuit 1, one end of the indicator light 3 of the No. 1 test circuit 2 is connected to the positive pole of the device power supply 51, and the other end can be connected to the No. 2 load circuit 1 through the dark loop, and connected to the vehicle body ground 9 through the No. 2 load circuit 1, that is, connected to the negative pole, and the indicator light 3 of the No. 1 test circuit 2 lights up.

[0047] Assuming that the vehicle body ground 9 is connected to the vehicle body ground 9 through the positive grounding wire, the vehicle body ground 9 becomes the positive electrode, and the current flows from the positive electrode to the negative electrode, that is, the electric potential is the highest after the current comes out of the positive electrode, and the electric potential energy of the negative electrode flowing back to the battery 8 after passing through the load unit 13 is the lowest. If the metal material of the entire vehicle body is used as the positive electrode, then the huge vehicle body will form a radio antenna, and combined with the highest electric potential energy of the positive electrode, it is easier to generate radio waves; and the negative electrode of the battery 8 is connected to the vehicle body ground 9 through the negative grounding wire 10, the current flows from the positive electrode to the negative electrode, and after passing through the load unit 13, the energy is released, the electric potential energy is reduced, and the generated radio energy becomes very small, and it is naturally not easy to generate radio interference. Therefore, in actual operation, the negative electrode of the battery 8 is connected to the vehicle body ground 9 through the negative grounding wire 10 to use the vehicle body as the negative electrode, which can prevent the vehicle from generating radio waves, and then prevent the radio waves from interfering with the instruments on the car and causing the electronic control device to lose control.

[0048] In some embodiments, multiple load circuits 1 and multiple test circuits 2 correspond one to one and can be set to 20-30 groups. In practice, the load circuits 1 can include 20 groups, 25 groups, 30 groups, etc. The vehicle has many load units 13, such as relays, motors, speakers, lights, wipers, heating wires, various controllers and other components. The grounding of multiple load units 13 can be detected through the ground failure test module 101, and the dark circuits between each load unit 13 can be detected, so as to clearly observe the test phenomena of multiple load units 13 of the vehicle, intuitively judge the test results, reduce the difficulty of operation, facilitate problem troubleshooting, and ensure the normal operation of multiple load units 13 of the vehicle.

[0049] The embodiment of the utility model also discloses a vehicle, including the above-mentioned vehicle ground failure test system 100, which can realize a simple test method of the vehicle ground failure test system 100, and is applicable to all vehicles that need to perform a ground failure test. The test result can be obtained by directly observing the indicator light 3 of the device. When troubleshooting, it is only necessary to disconnect the single-pole double-position switch 6 to locate the cause of the problem, thereby reducing the difficulty of operation, facilitating problem troubleshooting, ensuring the safety of the vehicle's load unit 13, and thus ensuring the safety of the vehicle.

[0050] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0051] 2. In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

[0052] 3. In the description of this utility model, "plurality" means two or more.

[0053] 4. In the description of the present invention, a first feature “above” or “below” a second feature may include that the first and second features are directly in contact, or may include that the first and second features are not in direct contact but are in contact via another feature between them.

[0054] 5. In the description of the present utility model, the first feature “above”, “above” and “on” the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle ground failure test system, characterized in that: include: A plurality of load circuits, wherein the plurality of load circuits are connected in parallel between the battery and the vehicle body ground, and each of the load circuits is provided with a single-pole double-set switch; A ground failure test module, wherein the ground failure test module comprises a plurality of test circuits, wherein the plurality of test circuits are all connected to the vehicle body ground, wherein each test circuit comprises a diode and an indicator light connected in series, and wherein the plurality of test circuits correspond one-to-one to the plurality of load circuits and are selectively turned on through corresponding single-pole double-set switches, wherein the diode is configured to be unidirectionally turned on toward the corresponding load circuit.

2. The vehicle ground failure test system according to claim 1, characterized in that: The ground failure test module also includes a main connection circuit, one end of each of the test circuits is selectively connected to the corresponding load circuit, and the other ends of each of the test circuits are connected to the vehicle body ground through the main connection circuit.

3. The vehicle ground failure test system according to claim 2, characterized in that: The main connection circuit is connected in series with a start switch and a device power supply, the start switch is used to control the start of the ground failure test module, and the device power supply is used to supply power to the indicator light.

4. The vehicle ground failure test system according to claim 3, characterized in that: The indicator light in each of the test circuits is located between the diode and the corresponding load circuit.

5. The vehicle ground failure test system according to claim 1, characterized in that: The load circuit includes a first section and a second section that are spaced apart, wherein the first section is electrically connected to the battery, and the second section is connected to the vehicle body ground; The single-pole double-set switch includes a fixed end and a movable end, the fixed end is connected to the first section, and the movable end is movable relative to the fixed end to selectively electrically connect to the second section or the test circuit.

6. The vehicle ground failure test system according to claim 5, characterized in that: The load unit in each of the load circuits is arranged in the corresponding first section.

7. The vehicle ground failure test system according to claim 1, characterized in that: It also includes a load main connection circuit, one end of a plurality of load circuits is connected to the load main connection circuit and the other end is connected to the vehicle body ground, and the other end of the load main connection circuit is connected to the positive electrode of the battery.

8. The vehicle ground failure test system according to claim 1, characterized in that: The negative electrode of the battery is connected to the vehicle body ground through a negative electrode grounding wire, and one end of the plurality of load circuits is connected to the positive electrode of the battery and the other end is connected to the vehicle body ground.

9. The vehicle ground failure test system according to claim 1, characterized in that: The plurality of load circuits and the plurality of test circuits correspond one to one and can be arranged into 20-30 groups.

10. A vehicle, characterized in that: A vehicle ground failure test system comprising the vehicle ground failure test system according to any one of claims 1 to 9.

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