A vehicle lamp testing system and method
By combining a power module, an adapter board, and a controllable switching transistor, the problem of independently lighting and testing high beams in vehicle lighting testing was solved. This enabled independent power supply and testing of high beams without damaging the wiring harness, reducing hardware costs and simplifying operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIAXING HELLA LIGHTING CO LTD
- Filing Date
- 2026-03-10
- Publication Date
- 2026-05-29
AI Technical Summary
In the vehicle body control system, existing technology cannot achieve separate lighting and testing of the high beam without damaging the original wiring harness of the headlights, and cannot meet the single-lamp regulatory testing requirements.
The system employs a combination of power modules, adapter boards, controllable switching transistors, and controllers. By controlling the conduction and shutdown of the controllable switching transistors, separate power supplies are provided for the high beam module and the low beam module. The adapter board is used to convert the interface between the power module and the vehicle lights, avoiding damage to the original wiring harness.
It enables the individual illumination and testing of high beams without damaging the vehicle's headlight wiring harness, and is characterized by low hardware cost, simple operation, and ease of implementation.
Smart Images
Figure CN122109904A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle lighting testing technology, specifically to a vehicle lighting testing system and method. Background Technology
[0002] In the current industry context of cost optimization and hardware resource simplification in vehicle body control systems, body controllers are trending towards reducing the number of output channels and integrating control. The vehicle's low beam and high beam headlights employ a combined drive control method, meaning that low beam illumination is achieved by activating the low beam alone, while high beam illumination is achieved by activating both the low beam and high beam simultaneously. This ensures that in actual vehicle operation, there is no working mode where only the high beam is activated without simultaneously activating the low beam.
[0003] However, in order to meet the single-lamp regulatory testing requirements, it is necessary to test the operation of illuminating the high beam alone without damaging the original wiring harness of the vehicle headlight. Summary of the Invention
[0004] In view of this, this application provides a vehicle headlight testing system and method that can achieve the separate illumination of high beam headlights without damaging the original wiring harness inside the headlight. The testing system is simple and convenient.
[0005] To solve the above problems, the technical solution provided in this application is as follows:
[0006] In a first aspect of this application, a vehicle lighting testing system is provided, comprising: a power module, an adapter board, a controllable switch transistor, and a controller;
[0007] The power module is connected to the headlights via an adapter board. The power module includes a high beam power module, and the headlights include a high beam module and a low beam module connected in series. The negative terminal of the high beam module is connected to the positive terminal of the low beam module.
[0008] The high beam power module is connected to the positive terminal of the high beam module; the first terminal of the controllable switch is connected to the positive terminal of the low beam module, the second terminal of the controllable switch is grounded, and the control terminal of the controllable switch is connected to the controller.
[0009] The controller is used to control the first and second terminals of the controllable switching transistor to conduct during the testing of the high beam module, so that the high beam power module supplies power to the high beam module independently.
[0010] In one possible implementation, the power module further includes a low beam power module, and the vehicle headlight testing system further includes diodes;
[0011] The low beam power module is connected to the anode of the diode, and the cathode of the diode is connected to the negative terminal of the high beam module.
[0012] One possible implementation is to ground the negative terminal of the low beam module;
[0013] The controller is also used to control the first and second terminals of the controllable switching transistor to turn off when testing the low beam module, so that the low beam power module supplies power to the low beam module alone.
[0014] In one possible implementation, the adapter board includes multiple terminals;
[0015] The first and second input terminals of the adapter board are used to connect to the positive and negative terminals of the high beam power module, respectively, and the third and fourth input terminals of the adapter board are used to connect to the positive and negative terminals of the low beam power module, respectively.
[0016] The first output terminal of the adapter board is used to connect to the positive terminal of the high beam module, the second output terminal of the adapter board is used to connect to the negative terminal of the high beam module, and the third output terminal of the adapter board is used to connect to the negative terminal of the low beam module.
[0017] The adapter board is used to convert the interface between the power module and the vehicle lights.
[0018] In one possible implementation, the adapter board includes: a rear cover, a printed circuit board assembly (PCBA), and a front housing, with the PCBA located between the rear cover and the front housing;
[0019] PCBA includes input terminals and output terminals. The power module is connected to the input terminals via pins, and the vehicle lights are connected to the output terminals via pins.
[0020] In one possible implementation, the second terminal of the controllable switch is connected to the control terminal of the controllable switch through a first current-limiting resistor, and the controller is connected to the control terminal of the controllable switch through a second current-limiting resistor.
[0021] In one possible implementation, the low beam power module and the high beam power module are current source modules.
[0022] In a second aspect of this application, a vehicle headlight testing method is provided. The testing method is applied to a vehicle headlight testing system, which includes a power module, an adapter board, and a controllable switching transistor. The power module is connected to the vehicle headlight via the adapter board. The power module includes a high beam power module, and the vehicle headlight includes a high beam module and a low beam module connected in series.
[0023] The vehicle headlight testing method includes: when testing the high beam module, controlling the first and second terminals of the controllable switch to conduct, so that the high beam power module supplies power to the high beam module alone; the high beam power module is connected to the positive terminal of the high beam module, the first terminal of the controllable switch is connected to the positive terminal of the low beam module, and the second terminal of the controllable switch is grounded.
[0024] In one possible implementation, the power module further includes a low beam power module, and the vehicle headlight testing system further includes diodes;
[0025] The low beam power module is connected to the anode of the diode, the cathode of the diode is connected to the cathode of the high beam module, and the cathode of the low beam module is grounded.
[0026] Vehicle headlight testing methods also include:
[0027] When testing the low beam module, the first and second terminals of the controllable switch are turned off, so that the low beam power module supplies power to the low beam module alone.
[0028] In one possible implementation, the adapter board includes multiple terminals;
[0029] When testing the high beam module, the positive and negative terminals of the high beam power module are connected to the first and second input terminals of the adapter board, respectively. The positive terminal of the high beam module is connected to the first output terminal of the adapter board, and the negative terminal of the high beam module is connected to the second output terminal of the adapter board.
[0030] When testing the low beam module, the positive and negative terminals of the low beam power module are connected to the third and fourth input terminals of the adapter board, respectively. The positive terminal of the low beam module is connected to the second output terminal of the adapter board, and the negative terminal of the low beam module is connected to the third output terminal of the adapter board.
[0031] The vehicle headlight testing system provided in this application connects the power module to the vehicle headlight via an adapter board, allowing testing of the headlight without damaging the headlight wiring harness. When testing the high beam module, the controller controls the conduction of the first and second terminals of a controllable switching transistor, which bypasses the low beam module, thus enabling the high beam module to be illuminated independently. This vehicle headlight testing system can test the operation of illuminating only the high beam, and it is low in hardware cost and easy to implement. Attached Figure Description
[0032] Figure 1 A schematic diagram of the first type of vehicle lighting testing system provided in the embodiments of this application;
[0033] Figure 2 This is a schematic diagram of a second type of vehicle lighting testing system provided in an embodiment of this application;
[0034] Figure 3 This is a schematic diagram of a third type of vehicle lighting testing system provided in an embodiment of this application;
[0035] Figure 4 A schematic diagram of an adapter board provided in an embodiment of this application;
[0036] Figure 5 A front view of an adapter board provided in an embodiment of this application;
[0037] Figure 6 A side view of an adapter plate provided in an embodiment of this application;
[0038] Figure 7 This is a schematic diagram of the back of an adapter board provided in an embodiment of this application;
[0039] Figure 8 A schematic diagram of a power module provided in an embodiment of this application;
[0040] Figure 9 This is a flowchart of a vehicle headlight testing method provided in an embodiment of this application. Detailed Implementation
[0041] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0042] To test the operation of high beams when they are lit individually, this application provides a vehicle lighting test system.
[0043] See Figure 1 The figure is a schematic diagram of the first type of vehicle headlight testing system provided in the embodiments of this application.
[0044] The vehicle headlight testing system provided in this application includes a power module 10, an adapter board 20, a controllable switch Q1, and a controller 30.
[0045] The power module 10 is connected to the headlight 40 via the adapter plate 20. The power module 10 includes a high beam power module 101, and the headlight 40 includes a high beam module 401 and a low beam module 402 connected in series.
[0046] This application does not specifically limit the structure of the high beam module 401 and the low beam module 402. For example, in actual use scenarios, the high beam module 401 and the low beam module 402 typically include multiple light-emitting diodes (LEDs) connected in series, with the negative terminal of each LED connected to the positive terminal of the adjacent LED. For ease of understanding, this application embodiment uses an example where the high beam module 401 and the low beam module 402 each include five LEDs connected in series.
[0047] The high beam power module 101 is connected to the positive terminal of the high beam module 401, and the negative terminal of the high beam module 401 is connected to the positive terminal of the low beam module 402. The first terminal of the controllable switch Q1 is connected to the positive terminal of the low beam module 402, the second terminal of the controllable switch Q1 is grounded, and the control terminal of the controllable switch Q2 is connected to the controller 30.
[0048] The controller 30 is used to control the first and second terminals of the controllable switch Q1 to conduct during the testing of the high beam module 401, so that the high beam power module 101 supplies power to the high beam module 401 alone.
[0049] Since the controllable switch Q1 can bypass the low beam module 402 when the first and second terminals of the controllable switch Q1 are turned on, the high beam power module 101 can supply power to the high beam module 401 independently, thereby achieving the effect of lighting up the high beam module 401 independently, and thus conducting tests on the working condition of lighting up the high beam independently.
[0050] This application does not specifically limit the specific type of controllable switching transistor, as long as it can control the controllable switching transistor to both turn on and turn off. For example, the controllable switching transistor may include an insulated gate bipolar transistor (IGBT), a power metal-oxide-semiconductor field-effect transistor (Power MOSFET), or a gate turn-off thyristor (GTO), etc.
[0051] In the vehicle lighting test system provided in this application embodiment, taking the controllable switch Q1 as an NMOS transistor as an example, the first terminal of the controllable switch Q1 is the drain, the second terminal of the controllable switch Q1 is the source, and the control terminal of the controllable switch Q1 is the gate. The controller 30 can control the gate voltage of the controllable switch Q1 to be greater than the drain voltage, thereby turning on the controllable switch Q1.
[0052] The vehicle headlight testing system provided in this application embodiment connects the power module to the vehicle headlight via an adapter board, allowing testing of the headlight without damaging the headlight wiring harness. When testing the high beam module, the controller controls the conduction of the first and second terminals of a controllable switching transistor, bypassing the low beam module and thus enabling the high beam module to be illuminated independently. This vehicle headlight testing system can test the operation of illuminating only the high beam, and it is low in hardware cost and easy to implement.
[0053] In one possible implementation, the vehicle lighting test system provided in this application embodiment further includes a low beam power module in the power supply module, and the vehicle lighting test system also includes diodes.
[0054] See Figure 2 The figure is a schematic diagram of the second type of vehicle headlight testing system provided in the embodiments of this application.
[0055] Figure 2 In the provided vehicle lighting test system, the low beam power module 102 is connected to the anode of diode D1, and the cathode of diode D1 is connected to the positive terminal of low beam module 402.
[0056] Since diode D1 can prevent reverse current, when the high beam power module 101 supplies power to the high beam module 401 alone, the current supplied by the high beam power module 101 will not affect the low beam power module 102.
[0057] In one possible implementation, the negative terminal of the low beam module 402 can be grounded. In order to achieve the effect of lighting up the low beam module alone, in the vehicle lamp testing system provided in this application embodiment, the controller 30 is also used to control the first and second terminals of the controllable switch Q1 to turn off when testing the low beam module 402, so that the low beam power module 102 supplies power to the low beam module 402 alone.
[0058] See also Figure 2 Since the controllable switch Q1 cannot bypass the low beam module 402 when its first and second terminals are turned off, the low beam power module 102 can supply power to the low beam module 402 independently, achieving the effect of lighting up the low beam module 402 alone, thus enabling testing of the low beam headlight operation under independent lighting conditions. Furthermore, since the light-emitting diodes in the high beam module 401 can achieve unidirectional conduction, the current supplied by the low beam power module 102 when it supplies power to the low beam module 402 independently will not affect the high beam power module 101.
[0059] The vehicle headlight testing system provided in this application embodiment, when testing the low beam module of the vehicle headlight, uses a controller to control the first and second ends of the controllable switching transistor to turn off, which can achieve the effect of lighting up the high beam module alone. Therefore, this vehicle headlight testing system can test both the working condition of lighting up the high beam alone and the working condition of lighting up the low beam alone.
[0060] In one possible implementation, the controller 30 can control the gate voltage of the controllable switch Q1 to be less than the drain voltage, thereby turning on the controllable switch Q1.
[0061] In order to limit the current flowing through the controllable switch Q1, one possible implementation is that in the vehicle lamp testing system provided in this application embodiment, a current-limiting resistor can be connected in series with the controllable switch Q1.
[0062] See also Figure 2 , Figure 2 In the provided vehicle lighting test system, the second terminal of the controllable switch Q1 is connected to the control terminal of the controllable switch Q1 through the first current-limiting resistor R1, and the controller 30 is connected to the control terminal of the controllable switch Q2 through the second current-limiting resistor R2.
[0063] The vehicle lighting test system provided in this application embodiment has a current-limiting resistor connected in series on the controllable switch tube, which can limit the current flowing through the controllable switch tube, protect the controllable switch tube and the light-emitting diode, and improve the stability and reliability of the vehicle lighting test system.
[0064] In one possible implementation, the adapter board 20 includes multiple terminals. The connection method between the power module 10, the adapter board 20, and the vehicle light 40 is described in detail below with reference to the accompanying drawings.
[0065] See Figure 3 The figure is a schematic diagram of the third type of vehicle headlight testing system provided in the embodiments of this application.
[0066] Figure 3 In the provided vehicle lighting test system, the adapter board 20 includes input terminals and output terminals. The input terminals include a first input terminal 20A, a second input terminal 20B, a third input terminal 20C, and a fourth input terminal 20D; the output terminals include a first output terminal 20E, a second output terminal 20F, and a third output terminal 20G.
[0067] The first input terminal 20A and the second input terminal 20B of the adapter board 20 are used to connect to the positive and negative terminals of the high beam power module 101, respectively. The third input terminal 20C and the fourth input terminal 20D of the adapter board 20 are used to connect to the positive and negative terminals of the low beam power module 102, respectively. In one possible implementation, the negative terminals of the high beam power module 101 and the low beam power module 102 can be grounded.
[0068] The first output terminal 20E of the adapter board 20 is used to connect to the positive terminal of the high beam module 401, the second output terminal 20F of the adapter board 20 is used to connect to the negative terminal of the high beam module 401, and the third output terminal 20G of the adapter board 20 is used to connect to the negative terminal of the low beam module 402.
[0069] The adapter board 20 is used to realize the interface conversion between the power module 10 and the vehicle light 40.
[0070] The vehicle headlight testing system provided in this application embodiment includes an adapter board with multiple terminals, enabling structural conversion between the power module and the vehicle headlight. The power module connects to the vehicle headlight via the adapter board, allowing for electrical connection between the power module and the headlight without damaging the original headlight structure, thereby enabling testing of either the low beam module or the high beam module individually.
[0071] In one possible implementation, the adapter board 20 includes a rear cover, a printed circuit board assembly (PCBA), and a front cover.
[0072] See Figure 4 The figure is a schematic diagram of an adapter board provided in an embodiment of this application.
[0073] Figure 4The provided adapter board 20 includes a rear cover 201, a PCBA 202, and a front housing 203, with the PCBA 202 located between the rear cover 201 and the front housing 203. In one possible implementation, the rear cover 201 and the front housing 203 can be fixed together with screws. The PCBA 202 includes an input terminal 2021 and an output terminal 2022. The power module 10 is connected to the PCBA 202 via the input terminal 2021, and the PCBA 202 is connected to the vehicle light 40 via the output terminal 2022.
[0074] To more clearly illustrate the structure of the adapter board 20, this application embodiment also provides a three-view drawing of the adapter board 20.
[0075] See Figure 5 The figure is a front view of an adapter board provided in an embodiment of this application.
[0076] See Figure 6 The figure is a side view of an adapter plate provided in an embodiment of this application.
[0077] See Figure 7 The figure is a schematic diagram of the back of an adapter plate provided in an embodiment of this application.
[0078] In one possible implementation, the vehicle lighting test system provided in this application embodiment further includes a main switch, a high beam power module indicator, and a low beam power module indicator in the power module 10.
[0079] See Figure 8 The figure is a schematic diagram of a power module provided in an embodiment of this application.
[0080] Figure 8 The provided power module 10 also includes a main switch 103, a high beam power module indicator light 104, and a low beam power module indicator light 105. The main switch 103 controls the activation or deactivation of the power module 10. The high beam power module indicator light 104 indicates the operating status of the high beam power module 101; for example, the indicator light 104 is lit when the high beam power module 101 is working and off when it is not working. The low beam power module indicator light 105 indicates the operating status of the low beam power module 102; for example, the indicator light 105 is lit when the low beam power module 102 is working and off when it is not working. In one possible implementation, the power module 10 can be powered by 220V AC.
[0081] This application does not specifically limit the types of low beam power modules and high beam power modules. In one possible implementation, the low beam power module and high beam power module are current source modules.
[0082] Based on the vehicle headlight testing system provided in the above embodiments, this application also provides a vehicle headlight testing method. The vehicle headlight testing method provided in this application is applied to the vehicle headlight testing system provided in the above embodiments. The vehicle headlight testing system includes: a power module, an adapter board, and a controllable switch transistor; the power module is connected to the vehicle headlight via the adapter board, and the power module includes a high beam power module. The vehicle headlight includes a high beam module and a low beam module connected in series; the high beam power module is connected to the positive terminal of the high beam module, the first end of the controllable switch transistor is connected to the positive terminal of the low beam module, and the second end of the controllable switch transistor is grounded.
[0083] See Figure 9 The figure is a flowchart of a vehicle headlight testing method provided in an embodiment of this application.
[0084] The method includes:
[0085] S901: When testing the high beam module, control the first and second terminals of the controllable switch to conduct, so that the high beam power module supplies power to the high beam module independently.
[0086] For example, the controller can be connected to the control terminal of the controllable switching transistor. The controller can control the first and second terminals of the controllable switching transistor to conduct, thereby allowing the controllable switching transistor to bypass the low beam module of the vehicle headlight, so that the high beam power module can supply power to the high beam module alone.
[0087] The vehicle headlight testing method provided in this application controls the first and second terminals of a controllable switch to conduct during the testing of the high beam module. This allows the controllable switch to bypass the low beam module, thus enabling the high beam module to be illuminated independently. This vehicle headlight testing method can test the operation of illuminating the high beam module alone. It is simple and convenient to operate, has low control costs, and is easy to implement.
[0088] In one possible implementation, the power module provided in this application embodiment further includes a low beam power module, and the vehicle headlight testing system further includes a diode; the low beam power module is connected to the anode of the diode, and the cathode of the diode is connected to the negative terminal of the high beam module.
[0089] The test method for the negative grounding of the low beam module also includes: when testing the low beam module, controlling the first and second ends of the controllable switching transistor to be turned off, so that the low beam power module supplies power to the low beam module alone.
[0090] For example, the controller can be connected to the control terminal of the controllable switch tube. The controller can control the first and second terminals of the controllable switch tube to turn off, so that the controllable switch tube cannot bypass the low beam module of the headlight, and the low beam power module supplies power to the low beam module alone.
[0091] The vehicle headlight testing method provided in this application controls the first and second ends of the controllable switch tube to be turned off when testing the low beam module of the vehicle headlight, which can achieve the effect of lighting up the low beam module alone. Therefore, this vehicle headlight testing method can test both the working condition of lighting up the high beam alone and the working condition of lighting up the low beam alone.
[0092] In one possible implementation, the adapter board includes multiple terminals; the vehicle lighting control method further includes:
[0093] When testing the high beam module, the positive and negative terminals of the high beam power module are connected to the first and second input terminals of the adapter board, respectively. The positive terminal of the high beam module is connected to the first output terminal of the adapter board, and the negative terminal of the high beam module is connected to the second output terminal of the adapter board.
[0094] When testing the low beam module, the positive and negative terminals of the low beam power module are connected to the third and fourth input terminals of the adapter board, respectively. The positive terminal of the low beam module is connected to the second output terminal of the adapter board, and the negative terminal of the low beam module is connected to the third output terminal of the adapter board.
[0095] The vehicle headlight testing method provided in this application includes an adapter board with multiple terminals. When testing the high beam module, the high beam power module is connected to the high beam module of the vehicle headlight through the adapter board; when testing the low beam module, the low beam power module is connected to the low beam module of the vehicle headlight through the adapter board. This allows for electrical connection between the power module and the vehicle headlight without damaging the original structure of the headlight, thereby enabling testing of either the low beam module or the high beam module being lit individually.
[0096] The controller provided in this application embodiment may include software to implement the control methods described above. Alternatively, the controller provided in this application embodiment may include hardware to implement the control methods described above. Or, the controller provided in this application embodiment may include both software and hardware, using a combination of software and hardware to execute the control methods described above.
[0097] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0098] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A vehicle headlight testing system, characterized in that, include: Power module, adapter board, controllable switching transistor and controller; The power module is connected to the vehicle headlights via the adapter plate. The power module includes a high beam power module, and the vehicle headlights include a high beam module and a low beam module connected in series. The negative terminal of the high beam module is connected to the positive terminal of the low beam module. The high beam power module is connected to the positive terminal of the high beam module; the first terminal of the controllable switch is connected to the positive terminal of the low beam module, the second terminal of the controllable switch is grounded, and the control terminal of the controllable switch is connected to the controller. The controller is used to control the first and second terminals of the controllable switch to conduct during the testing of the high beam module, so that the high beam power module supplies power to the high beam module alone.
2. The vehicle headlight testing system according to claim 1, characterized in that, The power module also includes a low beam power module, and the vehicle headlight testing system also includes diodes; The low beam power module is connected to the anode of the diode, and the cathode of the diode is connected to the negative terminal of the high beam module.
3. The vehicle headlight testing system according to claim 2, characterized in that, The negative terminal of the low beam module is grounded; The controller is also used to control the first and second terminals of the controllable switch to turn off when testing the low beam module, so that the low beam power module supplies power to the low beam module alone.
4. The vehicle headlight testing system according to any one of claims 1 to 3, characterized in that, The adapter board includes multiple terminals; The first and second input terminals of the adapter board are used to connect to the positive and negative terminals of the high beam power module, respectively, and the third and fourth input terminals of the adapter board are used to connect to the positive and negative terminals of the low beam power module, respectively. The first output terminal of the adapter board is used to connect to the positive terminal of the high beam module, the second output terminal of the adapter board is used to connect to the negative terminal of the high beam module, and the third output terminal of the adapter board is used to connect to the negative terminal of the low beam module. The adapter board is used to realize the interface conversion between the power module and the vehicle light.
5. The vehicle headlight testing system according to claim 4, characterized in that, The adapter board includes: a rear cover, a printed circuit board assembly (PCBA), and a front shell, wherein the PCBA is located between the rear cover and the front shell; The PCBA includes input terminals and output terminals. The power module is connected to the input terminals via pins, and the vehicle lights are connected to the output terminals via pins.
6. The vehicle headlight testing system according to claim 5, characterized in that, The second terminal of the controllable switch is connected to the control terminal of the controllable switch through a first current-limiting resistor, and the controller is connected to the control terminal of the controllable switch through a second current-limiting resistor.
7. The vehicle headlight testing system according to claim 6, characterized in that, The low beam power module and the high beam power module are current source modules.
8. A method for testing vehicle lights, characterized in that, The test method is applied to a vehicle lighting test system, which includes a power module, an adapter board, and a controllable switching transistor. The power module is connected to the vehicle lighting through the adapter board. The power module includes a high beam power module, and the vehicle lighting includes a high beam module and a low beam module connected in series. The vehicle headlight testing method includes: when testing the high beam module, controlling the first and second ends of the controllable switch to conduct, so that the high beam power module supplies power to the high beam module alone; the high beam power module is connected to the positive terminal of the high beam module, the first end of the controllable switch is connected to the positive terminal of the low beam module, and the second end of the controllable switch is grounded.
9. The vehicle headlight testing method according to claim 8, characterized in that, The power module also includes a low beam power module, and the vehicle headlight testing system also includes diodes; The low beam power module is connected to the anode of the diode, the cathode of the diode is connected to the negative terminal of the high beam module, and the negative terminal of the low beam module is grounded. The vehicle headlight testing method also includes: During the testing of the low beam module, the first and second terminals of the controllable switch are turned off, so that the low beam power module supplies power to the low beam module alone.
10. The vehicle headlight testing method according to claim 8 or 9, characterized in that, The adapter board includes multiple terminals; When testing the high beam module, the positive and negative terminals of the high beam power module are connected to the first and second input terminals of the adapter board, respectively. The positive terminal of the high beam module is connected to the first output terminal of the adapter board, and the negative terminal of the high beam module is connected to the second output terminal of the adapter board. During the testing of the low beam module, the positive and negative terminals of the low beam power module are connected to the third and fourth input terminals of the adapter board, respectively. The positive terminal of the low beam module is connected to the second output terminal of the adapter board, and the negative terminal of the low beam module is connected to the third output terminal of the adapter board.