A light driving module, method, system and vehicle

Abstract

The application provides a light driving module, method, system and vehicle, and relates to the technical field of vehicle lamps. The module comprises a first interface circuit, a control circuit and a second interface circuit. The first interface circuit is connected with a vehicle body module. The control circuit is connected with the first interface circuit. The second interface circuit is connected with the control circuit and a vehicle lamp module. A plurality of configuration information is pre-stored in the control circuit. The control circuit receives first parameter information from the vehicle body module through the first interface circuit, receives second parameter information from the vehicle lamp module through the second interface circuit, determines target configuration information matched with the first and second parameter information from the plurality of configuration information, and controls the working mode of the vehicle lamp module through the second interface circuit according to the target configuration information. The module can realize cross-model and cross-specification adaptive compatibility, and has high universality. Different models of vehicle lamps can be adapted by only changing the pre-stored configuration information, thereby saving a large amount of manpower and material resources.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and more specifically, to a lighting driving module, method, system, and vehicle. Background Technology

[0002] Light-emitting diode (LED) lights are widely used in vehicle lighting. Currently, the electronic components of automotive lights generally consist of a driver module and an LED panel. Due to the different exterior designs of each vehicle, the structural designs of the lights also vary. Correspondingly, the placement and size of the LED panel and driver module within the light structure often need to be customized according to the specific vehicle model.

[0003] Most automotive lighting manufacturers in related technologies adopt vehicle-specific design solutions, meaning that the connection method between the drive module and the vehicle body (including connector definition, number of pins and signal matching, etc.) and the connection relationship between the drive module and each lamp board (including wiring harness length, connector specifications, lamp board layout and flexible circuit board routing, etc.) are all fixed designs.

[0004] However, this vehicle-specific design approach makes it difficult to reuse drive modules across different models, resulting in poor versatility. Secondly, each headlight's drive module requires dedicated development, leading to high development costs and long development cycles, resulting in a significant waste of human and material resources. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a lighting drive module, method, system, and vehicle, aiming to resolve the problem of vehicle-specific design in related technologies, which makes it difficult to reuse drive modules across different vehicle models and results in poor versatility. Furthermore, the development costs are high, and the development cycle is long, leading to a significant waste of human and material resources.

[0006] In a first aspect, this application provides a lighting driving module applied to a vehicle, the vehicle including a body module and a headlight module. The lighting driving module includes: a first interface circuit, a control circuit, and a second interface circuit; the first interface circuit is connected to the body module; the control circuit is connected to the first interface circuit; the second interface circuit is connected to the control circuit and the headlight module; wherein, the control circuit pre-stores multiple configuration information, different configuration information corresponding to body modules of different vehicle models and / or headlight modules of different specifications; the control circuit is used to receive first parameter information from the body module via the first interface circuit and second parameter information from the headlight module via the second interface circuit, and determine target configuration information matching the first parameter information and the second parameter information from the multiple configuration information, and control the working mode of the headlight module via the second interface circuit according to the target configuration information.

[0007] In the above-mentioned technical solution, the lighting drive module provided in this application has multiple configuration information pre-stored in the control circuit for body modules and / or headlight modules of different specifications corresponding to different vehicle models. It then combines the first parameter information and the second parameter information to determine the corresponding target configuration information, thereby controlling the operation of the headlight module. That is, the lighting drive module of this application can achieve adaptive compatibility across vehicle models and specifications, exhibiting high versatility. Secondly, the lighting drive module only needs to change the pre-stored configuration information to adapt to different headlight models, eliminating the need for redeveloping hardware and software for each headlight model. This effectively reduces the development steps of the drive module in the development of new headlights, significantly reducing development costs, shortening the development cycle, and saving substantial human and material resources. Furthermore, in terms of material management, the same lighting drive module can be applied to multiple headlight models by switching configuration information. Vehicle manufacturers and component suppliers only need to keep a small number of universal drive modules to cover the needs of multiple vehicle models, significantly reducing inventory types and management difficulty. In terms of manufacturing, the production line does not need to frequently switch between different drive module models, which is beneficial for improving assembly efficiency and automation levels. In terms of after-sales maintenance, repair personnel only need to be equipped with a small number of universal drive modules to meet the repair and replacement needs of various models, effectively avoiding the problems of misuse of spare parts, shortage of materials or backlog, and reducing the cost and complexity of after-sales maintenance.

[0008] In conjunction with the first aspect, in some possible implementations, the first interface circuit has a unified first interface definition for connecting to body modules of different vehicle models; and / or, the second interface circuit has a unified second interface definition for connecting to headlight modules of different specifications.

[0009] In the above technical solution, by unifying the first and second interface definitions, the control circuit can adapt to different vehicle body modules and different specifications of headlight modules on a standardized hardware platform by switching pre-stored configuration information, thus realizing a software-defined driven adaptive architecture. Unlike the fixed wiring in related technologies, this bidirectional unified interface definition enables the headlight drive module to achieve universal access capabilities across vehicle models and specifications at the hardware level. It eliminates the need to redesign connector selection and wiring harness definitions for each headlight, simplifying connector types and reducing wiring harness design complexity and manufacturing costs.

[0010] Combining the first aspect and the above implementation methods, in some possible implementation methods, the configuration information includes at least one or more of the following: input interface configuration parameters, power supply configuration parameters, current detection configuration parameters, output interface configuration parameters, fan management configuration parameters, power derating configuration parameters, thermal derating configuration parameters, lighting priority configuration parameters, failure mode configuration parameters, diagnostic output configuration parameters, and chip initialization configuration parameters.

[0011] In the aforementioned technical solution, the configuration information of this application covers multiple dimensions, including input interface configuration, power supply configuration, BIN current configuration, output interface configuration, fan management configuration, power derating configuration, thermal derating configuration, lamp control priority configuration, LED failure mode configuration, diagnostic output configuration, and chip initialization configuration. This enables the control circuit to perform comprehensive and precise control over the vehicle lighting module. Secondly, the configuration parameters in the configuration information can be flexibly combined according to actual needs, allowing the same hardware platform to meet the differentiated functional requirements of different vehicle models and different lighting specifications, thus fully adapting to the functional requirements of various vehicle lighting structures. Furthermore, in practical applications, most vehicle lighting functions can be controlled simply by changing the configuration information, without modifying the underlying software code or hardware circuitry. This enables the lighting drive module to have cross-vehicle and cross-specification platform adaptability, achieving compatibility adaptation of a single drive module to multiple lighting modules and vehicle models, effectively shortening the overall vehicle development cycle and reducing material management costs.

[0012] In conjunction with the first aspect and the above implementation methods, in some possible implementation methods, the first interface circuit includes: a power input interface, a first signal input interface, and a diagnostic output interface; the power input interface is connected to the power output terminal of the body module and the control circuit, and is used to receive the body power from the body module and provide power voltage to the control circuit; the first signal input interface is connected to the lamp function signal output terminal of the body module, and is used to receive the lamp function request signal from the body module; the diagnostic output interface is connected to the diagnostic receiving terminal of the body module and the control circuit, and is used to output the lamp function diagnostic signal generated by the control circuit to the body module; wherein, the first parameter information includes the voltage status signal of the body power and / or the lamp function request signal.

[0013] In the above technical solution, by setting up an independent power input interface specifically for receiving vehicle body power and supplying power to the control circuit, the power supply path and signal transmission path are physically separated, avoiding interference from current fluctuations on the signal lines to control commands, and effectively improving the working stability and anti-interference capability of the control circuit. By setting the receiving interface for the lamp function request signal and the output interface for the diagnostic signal independently, the forward command input and the backward status feedback are physically isolated, avoiding crosstalk between the request signal and the diagnostic signal, and enabling the vehicle body module to obtain the lamp function diagnostic signal fed back by the control circuit in real time through the diagnostic output interface, thus forming a complete closed-loop detection and monitoring link.

[0014] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the control circuit includes: a linear voltage regulator module, a controller, and a driver; the input terminal of the linear voltage regulator module is connected to the power input interface; the controller is connected to the output terminal of the linear voltage regulator module, the first signal input interface, and the power input interface; and the driver is connected to the controller and the vehicle lamp module.

[0015] In the above technical solution, by directly connecting the power input interface to the input terminal of the linear regulator module, placing it at the front end of the controller, high-frequency noise and voltage spikes in the vehicle's power supply can be effectively filtered out. By providing the controller with a clean and stable low-voltage power supply, reliable operation of the controller in complex vehicle power supply environments is ensured, while reducing the power supply design complexity of the subsequent drivers. Furthermore, the linear regulator module focuses on power purification, the controller focuses on logic judgment and instruction generation, and the driver focuses on power output. The cascaded architecture consisting of the controller, linear regulator module, and driver has a clear functional division, allowing each module to be selected and optimized independently, facilitating system integration and fault location, and reducing development costs and maintenance difficulty.

[0016] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the second interface circuit includes: a second signal input interface, a power output interface, and an analog signal output interface; the second signal input interface is connected to the vehicle lamp module and the controller, and is used to receive analog feedback signals from the vehicle lamp module; the power output interface is connected to the vehicle lamp module and the driver, and is used to output drive current or drive voltage to the vehicle lamp module; the power output interface is connected to the vehicle lamp module and the driver, and the analog signal output interface is used to output analog control signals to the vehicle lamp module.

[0017] In the above technical solution, the power output interface and analog signal output interface are separated, thus separating the power drive signal and analog adjustment signal in the transmission path. This avoids the coupling interference caused by high-current power signals to weak analog signals, improving the accuracy of analog control signals and the consistency of the headlight module's response. Secondly, the analog feedback signal from the headlight module is acquired through the second signal input interface and transmitted back to the controller, enabling the controller to dynamically adjust the driver output based on the actual operating state of the headlight module. This effectively compensates for output deviations caused by factors such as temperature drift, component aging, and load differences, significantly improving the consistency of the headlight module's brightness, color temperature stability, and long-term operational reliability.

[0018] Secondly, embodiments of this application provide a lighting driving method applied to a lighting driving module described in any optional manner of the first aspect. The method includes: receiving first parameter information from a vehicle body module via a first interface circuit, and receiving second parameter information from a vehicle headlight module via a second interface circuit; determining target configuration information that matches the first parameter information and the second parameter information from a plurality of configuration information; and controlling the operating mode of the vehicle headlight module via the second interface circuit according to the target configuration information.

[0019] In conjunction with the second aspect, in some possible implementations, the configuration information includes at least one or more of the following: input interface configuration parameters, power supply configuration parameters, current detection configuration parameters, output interface configuration parameters, fan management configuration parameters, power derating configuration parameters, thermal derating configuration parameters, lighting priority configuration parameters, failure mode configuration parameters, diagnostic output configuration parameters, and chip initialization configuration parameters.

[0020] Thirdly, embodiments of this application provide a lighting driving system, which includes: a body module, a headlight module, and the lighting driving module described in any of the optional embodiments of the first aspect; the lighting driving module is connected to the body module, and the headlight module is connected to the lighting driving module.

[0021] Fourthly, embodiments of this application provide a vehicle, the vehicle including a body and a lighting drive system as described in any of the optional embodiments of the third aspect, the lighting drive system being disposed on the vehicle body.

[0022] Fifthly, a computer program product is provided, comprising: computer program code, which, when run on a computer, causes the computer to perform the light driving method in any possible implementation of the second aspect and the second aspect described above.

[0023] In a sixth aspect, a computer-readable storage medium is provided, which stores a computer program that, when executed, causes the computer to perform the light-driving method of any possible implementation of the second aspect and the second aspect described above. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a lighting driving system provided by related technologies; Figure 2 This is a schematic diagram of the structure of a lighting driving system provided in an embodiment of this application; Figure 3 This is a schematic diagram of another lighting driving system provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a lighting driving module provided in an embodiment of this application; Figure 5 This is a schematic diagram of another lighting driving module provided in an embodiment of this application; Figure 6 This is a schematic diagram of another lighting driving system provided in the embodiments of this application; Figure 7 This is a schematic flowchart of a lighting driving method provided in an embodiment of this application; Figure 8 This is a schematic flowchart of another lighting driving method provided in the embodiments of this application.

[0025] In the attached figures, the following labels are used: 1. Body module; 2. Headlight module; 3. Lighting drive module; 31. First interface circuit; 311. Power input interface; 312. First signal input interface; 313. Diagnostic output interface; 32. Control circuit; 321. Linear voltage regulator module; 322. Controller; 323. Driver; 33. Second interface circuit; 331. Second signal input interface; 332. Power output interface; 333. Analog signal output interface. Detailed Implementation

[0026] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0027] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] LED lights are widely used in vehicle lighting. Currently, the electronic components of automotive lights generally consist of a driver module and an LED light panel. For non-bus-type automotive lights, various hard-wired signals for different light functions (such as high beam, low beam, position lights, turn signals, daytime running lights, etc.) are typically input from the vehicle body to the light driver module. This driver module contains a microcontroller unit (MCU), which identifies the input signals and sequentially performs BIN current calculations (i.e., setting the drive current based on the luminous flux or color temperature of the LED beads), thermal management calculations (i.e., dynamically adjusting the output current based on temperature detection results to prevent LED overheating and damage), and light control logic calculations (i.e., determining the lighting, turning off, or dimming logic of each light group based on the input signals and current state). After completing these calculations, the MCU controls the driver circuit to output the corresponding current to the LED light panel, thereby enabling the lighting or turning off of various vehicle lights.

[0029] Because each car model has a different exterior design, the structural design of the headlights also varies. Correspondingly, the placement and size of the lamp panel and driver module within the headlight structure often need to be customized according to the specific car model. Currently, most headlight manufacturers adopt a vehicle-specific design solution, meaning that the connection method between the driver module and the vehicle body (including connector definition, pin count, and signal matching, etc.) and the connection relationship between the driver module and each lamp panel (including wiring harness length, connector specifications, lamp panel layout, and flexible circuit board routing, etc.) are all fixed designs.

[0030] Figure 1 This is a structural diagram of a lighting drive system provided by related technologies.

[0031] For example, such as Figure 1 As shown, in the lighting drive system of the relevant technology, the drive module and the vehicle body are connected via a fixed-design interface for signal transmission. For example, there are interfaces for the high beam, low beam, turn signal, position light, power ground, high / low beam diagnostics, and turn signal diagnostics. The drive module and the lamp panel are also connected via a fixed-design interface for signal transmission. Figure 1As shown, assume there are four light panels: high beam, low beam, turn signal, and position light. Correspondingly, the driver module has the following interfaces: LED1+, LED1-, NTC1, and BIN1 for the high beam; LED2+, LED2-, NTC2, and BIN2 for the low beam; LED3+, LED3-, NTC3, and BIN3 for the high beam turn signal; and LED4+, LED4-, NTC4, and BIN4 for the position light.

[0032] This vehicle-specific design approach requires specialized development for the driver module of each headlight. This involves hardware development (such as schematic design, printed circuit board layout, and connector selection), software development (such as signal acquisition, BIN current calculation, thermal management strategies, and headlight control logic), as well as various environmental tests, electromagnetic compatibility (EMC) tests, and durability tests. The entire development cycle is lengthy and requires significant investment of manpower and resources, resulting in high costs. Secondly, the reusability of these vehicle-specific driver modules is poor, leading to numerous difficulties and resource waste in material management, manufacturing, and after-sales maintenance. Specifically, in terms of material management, different vehicle models require different specifications of driver modules, increasing inventory variety and management complexity; in terms of manufacturing, production lines need to frequently switch between different driver module models, affecting assembly efficiency and automation levels; in terms of after-sales maintenance, repair personnel need to be equipped with different spare parts for different vehicle models, easily leading to problems such as misuse, shortages, or stockpiling of spare parts. All of these problems are detrimental to the cost reduction and efficiency improvement of vehicle headlights.

[0033] In summary, this vehicle-specific design approach in related technologies makes it difficult to reuse drive modules across different vehicle models, resulting in poor versatility. Secondly, each vehicle headlight's drive module requires dedicated development, leading to high development costs and long development cycles, resulting in a significant waste of human and material resources.

[0034] Therefore, embodiments of this application provide a lighting driving module, method, system, and vehicle. This lighting driver can achieve adaptive compatibility across vehicle models and specifications, exhibiting high versatility. Furthermore, it can adapt to different types of vehicle lights simply by changing pre-stored configuration information, saving significant human and material resources.

[0035] The lighting drive module, method, system, and vehicle provided in this application are described below with reference to the accompanying drawings.

[0036] In one example, this application embodiment provides a vehicle, which includes a body and a lighting drive system, the lighting drive system being mounted on the vehicle body. The lighting drive system is used for centralized or distributed control of the lights at different locations on the vehicle to adjust the operating status of each light. The vehicle body provides a mounting platform for the lighting drive system and enables physical connection between the lighting drive system and the vehicle's power supply and communication network. Through the coordinated operation of the lighting drive system and the vehicle body, the vehicle can adaptively adjust the brightness, lighting sequence, illumination mode, or projection content of each light according to changes in the external environment, driving status, or user commands, thereby achieving intelligent lighting, signal prompts, and information interaction functions with the outside world.

[0037] Figure 2 This is a schematic diagram of the structure of a lighting driving system provided in an embodiment of this application.

[0038] In one example, such as Figure 2 As shown, the lighting drive system includes a body module 1, a headlight module 2, and a lighting drive module 3. The lighting drive module 3 is connected to the body module 1, and the headlight module 2 is connected to the lighting drive module 3.

[0039] The vehicle body module 1 is the upper-level control unit, providing power to the vehicle body, control signals, and communication bus data. The lighting drive module 3 is the core drive and conversion unit, receiving power supply and control commands from the vehicle body module 1, parsing, logically judging, and converting the received control commands to generate the drive current and voltage adapted to the lighting module 2. The lighting module 2 is the execution unit, implementing corresponding lighting functions such as illumination, dimming, steering, daytime running lights, and high / low beam switching under the drive of the lighting drive module 3.

[0040] Each car model has a different exterior design, resulting in variations in the structural design of its headlights. Correspondingly, the placement and size of the headlight module 2 and the light driving module 3 within the headlight structure may also differ. Therefore, this application provides a light driving module 3 that can be reused across different car models, reducing the development costs of different headlights.

[0041] Figure 3 This is a schematic diagram of another lighting driving system provided in an embodiment of this application.

[0042] In one example, such as Figure 3 As shown, the lighting drive module 3 includes: a first interface circuit 31, a control circuit 32, and a second interface circuit 33. The first interface circuit 31 is connected to the body module 1; the control circuit 32 is connected to the first interface circuit 31; and the second interface circuit 33 is connected to the control circuit 32 and the headlight module 2.

[0043] The control circuit 32 stores multiple configuration information sets, which are the parameter sets required for the operation of the control circuit 32. It is worth noting that different configuration information sets correspond to different vehicle body modules 1 and / or different specifications of headlight modules 2.

[0044] In this example, during system power-on or operation, the control circuit 32 acquires first parameter information from the vehicle body module 1 in real time via the first interface circuit 31. This first parameter information may include at least one of the vehicle network protocol type, power supply voltage level, and communication baud rate. Simultaneously, the control circuit 32 acquires second parameter information from the headlight module 2 via the second interface circuit 33. This second parameter information may include at least one of the headlight type identifier, rated power, rated current, and number of LED strings. The control circuit 32 uses the first and second parameter information as matching conditions, comparing them one by one with multiple pre-stored configuration information sets. It then determines the target configuration information that matches both the currently connected vehicle body module 1 and headlight module 2, and controls the operating mode of the headlight module 2 via the second interface circuit 33 based on the target configuration information. Specifically, the control circuit 32 generates a corresponding drive signal based on the target configuration information and outputs it to the headlight module 2 via the second interface circuit 33 to control the headlight module 2 to operate according to the matched operating mode, thereby achieving adaptive compatibility of the headlight drive module 3 with different vehicle models and headlight specifications.

[0045] In one example, the configuration information includes at least one or more of the following: input interface configuration parameters, power supply configuration parameters, current sensing configuration parameters, output interface configuration parameters, fan management configuration parameters, power derating configuration parameters, thermal derating configuration parameters, lighting priority configuration parameters, failure mode configuration parameters, diagnostic output configuration parameters, and chip initialization configuration parameters.

[0046] The input interface configuration parameters are used to configure the analog-to-digital converter (ADC) detection channel corresponding to the input signal interface of each lamp function. According to the input interface configuration parameters, the control circuit 32 routes the lamp function request signals sent by the vehicle body module 1 to the designated ADC detection channel for analog-to-digital conversion, thereby realizing the identification of the input signals of each lamp function. For example, when the first parameter information indicates that the vehicle body module 1 is vehicle model A, the input interface configuration parameters map the left turn signal request signal to the first ADC channel, the right turn signal request signal to the second ADC channel, and the low beam request signal to the third ADC channel. When the first parameter information indicates that the vehicle body module 1 is vehicle model B, the input interface configuration parameters map the above request signals to different ADC channel combinations, allowing the same control circuit 32 to adapt to the input signal definitions of different vehicle models by changing the configuration.

[0047] The power configuration parameters are used to configure the threshold ranges for normal, undervoltage, and overvoltage power supplies for each lamp function. The control circuit 32 monitors the power supply voltage provided by the vehicle body module 1 in real time based on the power configuration parameters, determining whether the current power supply state falls within the normal, undervoltage, or overvoltage range, and thus performs corresponding power state management. For example, when the second parameter information indicates that the lamp module 2 is a headlight, the power configuration parameters are set to a normal voltage threshold of 10V to 16V, an undervoltage threshold of 9V to 10V, and an overvoltage threshold of 16V to 18V. When the second parameter information indicates that the lamp module 2 is a signal light, the power configuration parameters are set to a normal voltage threshold of 6V to 18V, an undervoltage threshold of 5V to 6V, and an overvoltage threshold of 18V to 20V. The control circuit 32 performs differentiated power state determination and response for different types of lamps based on the different power configuration parameters.

[0048] The current detection configuration parameters are BIN current configuration parameters, used to configure the ADC detection channel corresponding to the BIN current detection of each lamp function, and the AD value threshold range corresponding to each BIN class. Different specifications of the vehicle lamp modules 2 have different AD sampling values ​​under the same target current due to differences in the BIN levels of the LED beads. The control circuit 32 can route the current detection signal of the specified lamp function to the corresponding ADC detection channel according to the BIN current configuration parameters, compare the currently sampled AD value with the AD value threshold range corresponding to the BIN class, determine the BIN class of the currently connected vehicle lamp module 2, and then calculate the target current value output to the lamp board based on the BIN class. For example, the BIN current configuration parameters can be set to an AD value range of 100 to 200 for BIN1, 201 to 300 for BIN2, and 301 to 400 for BIN3. When the control circuit 32 samples an AD value of 250, it determines that the LED is of type BIN2. Based on the current coefficient corresponding to BIN2, it adjusts the duty cycle of the pulse width modulation (PWM) output to ensure that the LEDs of different BIN levels have consistent brightness output.

[0049] The output interface configuration parameters are used to configure the constant current (CC), constant voltage (CV), low-side switch (LSS), high-side switch (HSS) output channels, output current values, and PWM values ​​corresponding to each lamp function. The control circuit 32, based on the output interface configuration parameters, allocates the drive signals for each lamp function to the designated output channels and sets the corresponding output current and PWM duty cycle. For example, when the second parameter information indicates that the headlight module 2 is a high / low beam integrated module, the output interface configuration parameters allocate the low beam function to the constant current output channel 0 and set the output current to 1.2A and the PWM value to 100%; allocate the high beam function to the constant current output channel 1 and set the output current to 1.5A and the PWM value to 100%; and allocate the daytime running light function to the constant voltage output channel and set the output voltage to 5V. When the second parameter information indicates that the headlight module 2 is an independent high and low beam module, the output interface configuration parameters adopt different channel allocations and current settings, so that the same headlight drive module 3 can be adapted to headlight modules 2 with different topologies by switching the configuration.

[0050] The fan management configuration parameters are used to configure whether each light function is associated with fan operation, and the fan's operating voltage threshold. Different vehicle models have different heat dissipation requirements, and different power headlights generate different amounts of heat. The fan management configuration parameters enable flexible association between each light function and fan operation. For example, when headlight module 2 is a high-power headlight, the fan management configuration parameters set the headlight function to be associated with fan operation, the fan start voltage threshold to 10.5V, and the fan stop voltage threshold to 9.5V. The control circuit 32 starts the fan when the headlight is lit and the power supply voltage is higher than 10.5V. When headlight module 2 is a low-power signal light, the fan management configuration parameters set the signal light function not to be associated with fan operation; the fan will not start regardless of whether the signal light is lit, avoiding unnecessary fan operation and noise.

[0051] The power derating configuration parameters are used to configure the voltage threshold range and corresponding derating percentage for the power derating of each lamp function. Based on the power derating configuration parameters, the control circuit 32 reduces the output power of the corresponding lamp function by a set percentage when the power supply voltage provided by the vehicle module 1 drops to different threshold ranges, in order to maintain stable system operation. For example, the power derating configuration parameters are set as follows: when the input voltage is in the 8V to 9V range, the power derating is 80% of the rated power; when the input voltage is in the 7V to 8V range, the power derating is 60% of the rated power; and when the input voltage is below 7V, the power derating is 0% of the rated power, i.e., the output is shut off. When the control circuit 32 detects an input voltage of 8.5V, it automatically reduces the output current of the headlights to 80% of the rated value to prevent undervoltage instability of the drive circuit under low voltage conditions.

[0052] The thermal derating configuration parameters are used to configure the ADC detection channel for thermal detection of each lamp function, and the derating percentage corresponding to each temperature value. According to the thermal derating configuration parameters, the control circuit 32 routes the temperature sensor signal to the designated ADC detection channel for sampling, calculates the current temperature based on the sampled value, and then gradually reduces the output power according to the derating percentage corresponding to each temperature value. For example, the thermal derating configuration parameters are set as follows: the temperature detection ADC channel is the third ADC channel; derating is 0% at 60℃, 10% at 70℃, 30% at 80℃, 60% at 90℃, and 100% at 100℃, i.e., output is turned off. When the control circuit 32 calculates the current temperature to be 78℃ through sampling via the third ADC channel, it reduces the output power by approximately 24% using linear interpolation, achieving refined thermal management.

[0053] The lighting priority configuration parameter is used to configure the lighting priority of each light function. When multiple light functions share the same light-emitting surface and request to be lit simultaneously, the control circuit 32 determines the lighting order and status of each light function according to the lighting priority configuration parameter. For example, the lighting priority configuration parameter is set to the following priority order from high to low: brake lights take priority over turn signals, turn signals take priority over daytime running lights, and daytime running lights take priority over position lights. When turn signals and daytime running lights share the same light-emitting surface and are requested to be lit simultaneously, the control circuit 32 turns off the daytime running lights and turns on the turn signals according to the configuration parameter. After the turn signal request ends, the daytime running lights are turned on again, thus achieving orderly lighting control when multiple light functions share the same light-emitting surface.

[0054] The failure mode configuration parameters are used to configure the LED failure execution strategy for each lamp function under regulatory requirements. When the control circuit 32 detects a fault such as an open circuit, short circuit, or burnt-out LED in the headlight module 2, it executes the corresponding failure control strategy according to the LED failure mode configuration parameters. For example, the failure mode configuration parameters are set as follows: when a single LED in the headlight fails, the strategy is to keep the remaining LEDs working and maintain the overall brightness at or above the regulatory minimum with a compensation current; when some LEDs in the brake light fail, the strategy is to turn off the entire brake light and report the fault to the body module 1; when an LED in the daytime running light fails, the strategy is to switch the failed light function to the position light channel on the same luminous surface and continue to illuminate at the lowest brightness. The control circuit 32 executes differentiated failure safety responses for different lamp functions according to different failure mode configuration parameters to meet the regulatory requirements of each function.

[0055] The diagnostic output configuration parameters are used to configure the diagnostic output channel interface corresponding to each lamp function. Based on the diagnostic output configuration parameters, when a fault or state change is detected in any lamp function, the control circuit 32 sends the diagnostic signal to the body module 1 via the designated output channel. For example, the diagnostic output configuration parameters assign the headlight diagnostic signal to the first IO output port 0 of the first interface circuit 31, the turn signal diagnostic signal to the second IO output port, and the daytime running light diagnostic signal to the third IO output port. When the control circuit 32 detects a headlight fault, it sets IO output port 0 to a high level and sends a fault signal to the body module 1; when the fault is cleared and the recovery conditions are met, it sets IO output port 0 to a low level, thus achieving independent output management of the diagnostic signals for each lamp function.

[0056] The chip initialization configuration parameters are used to configure the initialization parameters of each chip inside the lighting driver module 3. After power-on or reset, the control circuit 32 initializes each internal functional chip sequentially according to the chip initialization configuration parameters. For example, the chip initialization configuration parameters include the initial frequency setting of the PWM control chip, the reference voltage selection of the ADC sampling chip, the baud rate setting of the communication interface chip, and the overflow time setting of the watchdog timer. The control circuit 32 controls each chip to complete the initialization according to the set timing and parameters based on these parameters, ensuring that the lighting driver module 3 can start stably and reliably in different application scenarios.

[0057] Optionally, the configuration information may also include other configuration information, which is not limited in this embodiment of the application.

[0058] It is worth noting that the same headlight assembly integrates multiple lighting functions such as low beam, high beam, daytime running light, turn signals, and position lights. The specific configuration can be flexibly customized according to the configuration requirements of different models, which will not be elaborated further.

[0059] Thus, the configuration information in this application covers multiple dimensions, including input interface configuration, power supply configuration, BIN current configuration, output interface configuration, fan management configuration, power derating configuration, thermal derating configuration, lamp control priority configuration, LED failure mode configuration, diagnostic output configuration, and chip initialization configuration. This enables the control circuit 32 to perform comprehensive and precise control over the vehicle lamp module 2. Secondly, the configuration parameters in the configuration information can be flexibly combined according to actual needs, allowing the same hardware platform to meet the differentiated functional requirements of different vehicle models and different lamp specifications, thereby fully adapting to the functional requirements of various lamp structures. Furthermore, in practical applications, most lamp functions can be controlled simply by changing the configuration information, without modifying the underlying software code or hardware circuitry. This gives the lighting drive module 3 cross-model and cross-specification platform adaptability, achieving compatibility adaptation of a single drive module to multiple lamp modules 2 and vehicle models, effectively shortening the overall vehicle development cycle and reducing material management costs.

[0060] In summary, the lighting drive module 3 provided in this application has multiple configuration information pre-stored in the control circuit 32 for different vehicle body modules 1 and / or different specifications of headlight modules 2. It then combines the first parameter information and the second parameter information to determine the corresponding target configuration information, thereby controlling the operation of the headlight module 2. That is, the lighting drive module 3 of this application can achieve adaptive compatibility across vehicle models and specifications, exhibiting high versatility. Furthermore, the lighting drive module 3 only needs to modify the pre-stored configuration information to adapt to different headlight models, eliminating the need for redeveloping hardware and software for each headlight model. This effectively reduces the development steps of the drive module in the development of new headlights, significantly lowers development costs, shortens the development cycle, and saves substantial human and material resources.

[0061] Furthermore, in terms of material management, the same lighting drive module 3 can be used for multiple vehicle lights by switching configuration information. OEMs and parts suppliers only need to keep a small number of universal drive modules on hand to cover the needs of multiple models, significantly reducing the variety of inventory and management complexity. In terms of manufacturing, the production line does not need to frequently switch between different drive module models, which helps improve assembly efficiency and automation levels. In terms of after-sales maintenance, repair personnel only need to be equipped with a small number of universal drive modules to handle the repair and replacement needs of multiple vehicle models, effectively avoiding problems such as misuse of spare parts, shortages, or stockpiling, and reducing after-sales maintenance costs and complexity.

[0062] In one example, the first interface circuit 31 has a unified first interface definition for connecting to the body module 1 of different vehicle models. The unified first interface definition of the first interface circuit 31 enables the lighting drive module 3 to form a standardized connection interface with the body module 1 at the hardware level. Body modules 1 of different vehicle models can all match this interface definition through the same physical interface and achieve electrical connection.

[0063] In one example, the second interface circuit 33 has a unified second interface definition for connecting to different specifications of the headlight modules 2. The headlight drive module 3, through the unified second interface definition of the second interface circuit 33, establishes a standardized connection interface at the hardware level between itself and the headlight module 2. Different specifications of the headlight modules 2, including high beam modules, low beam modules, turn signal modules, and position indicator modules, can all be electrically connected by matching this interface definition through the same physical interface.

[0064] In this example, through a unified first interface definition and a unified second interface definition, the control circuit 32 can adapt to different vehicle body modules 1 and different specifications of headlight modules 2 on a standardized hardware platform by switching pre-stored configuration information, thus realizing a software-defined driver adaptive architecture. This differs from related technologies where the drive module and the vehicle body require separate and non-interchangeable fixed wiring for different headlight functions such as high beam, low beam, turn signal, and position, and where the drive module and headlight panel require separate dedicated interfaces such as positive, negative, NTC, and BIN for each headlight panel. The aforementioned bidirectional unified interface definition enables the headlight drive module 3 to achieve universal access capabilities across vehicle models and specifications at the hardware level. This eliminates the need to redesign connector selection and wiring harness definitions for each headlight, simplifying connector types and reducing wiring harness design complexity and manufacturing costs.

[0065] Figure 4 This is a schematic diagram of the structure of a lighting driving module provided in an embodiment of this application.

[0066] In one example, such as Figure 4 As shown, the first interface circuit 31 includes: a power input interface 311, a first signal input interface 312, and a diagnostic output interface 313. The power input interface 311 is connected to the power output terminal of the body module 1 and the control circuit 32; the first signal input interface 312 is connected to the lamp function signal output terminal of the body module 1; and the diagnostic output interface 313 is connected to the diagnostic receiver terminal of the body module 1 and the control circuit 32.

[0067] In this example, the vehicle body power output from the vehicle body module 1 is input via the power input interface 311 and transmitted to the control circuit 32, providing the control circuit 32 with the power voltage required for its normal operation. During this process, the control circuit 32 acquires the voltage status signal of the vehicle body power supply by collecting the electrical signal at the power input interface 311, which serves as the basis for determining whether the current power supply conditions are normal.

[0068] Optionally, to further improve power supply redundancy or meet the power supply requirements of multiple voltage domains, the first interface circuit 31 may include a multi-channel power input interface 311, which is connected to the multi-channel power output terminals of the vehicle module 1 respectively, so as to provide the control circuit 32 with multiple power supplies of different voltage levels or power supply channels that serve as backups for each other.

[0069] The vehicle body module 1 generates a lamp function request signal based on driver operation or vehicle control logic. This request signal is transmitted to the control circuit 32 via the first signal input interface 312. After receiving and parsing the lamp function request signal, the control circuit 32 drives the corresponding vehicle lights to perform the corresponding functional actions according to the preset control logic. In addition, the control circuit 32 monitors the working status of the vehicle lights in real time during operation and generates a lamp function diagnostic signal accordingly. This diagnostic signal is fed back to the diagnostic receiver of the vehicle body module 1 through the diagnostic output interface 313, so that the vehicle body module 1 can know whether there is any abnormality in the current lamp function.

[0070] In the above process, the first parameter information includes the voltage status signal of the vehicle body power supply and / or the lamp function request signal. The control circuit 32 performs status judgment and logic control based on the first parameter information.

[0071] In this example, by setting up a separate power input interface 311 specifically for receiving vehicle body power and supplying power to the control circuit 32, the power supply path and signal transmission path are physically separated, avoiding interference from current fluctuations on the signal lines to the control commands, and effectively improving the working stability and anti-interference capability of the control circuit 32. By setting the receiving interface for the lamp function request signal and the output interface for the diagnostic signal independently, the forward command input and the backward status feedback are physically isolated, avoiding crosstalk between the request signal and the diagnostic signal, and enabling the vehicle body module 1 to obtain the lamp function diagnostic signal fed back by the control circuit 32 in real time through the diagnostic output interface 313, thus forming a complete closed-loop detection and monitoring link.

[0072] Figure 5 This is a schematic diagram of another lighting driving module provided in the embodiments of this application.

[0073] In one example, such as Figure 5 As shown, the control circuit 32 includes a linear regulator module 321, a controller 322, and a driver 323. The input terminal of the linear regulator module 321 is connected to the power input interface 311; the controller 322 is connected to the output terminal of the linear regulator module 321, the first signal input interface 312, and the power input interface 311; the driver 323 is connected to the controller 322 and the vehicle lamp module 2.

[0074] In this example, the input terminal of the linear regulator module 321 is connected to the power input interface 311 to perform linear regulation on the power supply voltage output by the power input interface 311, so as to provide a stable, low-ripple operating voltage to the controller 322.

[0075] Optionally, the linear regulator module 321 may be a low dropout regulator (LDO) or other devices or circuits that can achieve the above functions, and this application embodiment does not limit this.

[0076] The controller 322 is powered by the linear regulator module 321 and is used to receive the lamp function request signal from the body module 1 through the first signal input interface 312, and to acquire the voltage status signal of the body power supply through the power input interface 311. The driver 323 is used to drive the vehicle lamp module 2 to perform corresponding lamp function actions according to the control commands output by the controller 322.

[0077] Alternatively, the controller may be a microcontroller unit (MCU).

[0078] Optionally, the driver 323 may include application circuits for multiple DC-DC chips, an LSS circuit, and an HSS circuit. The application circuits for the multiple DC-DC chips provide the required driving voltage to the headlight module 2 to meet the varying voltage amplitude requirements of different LED chips or light groups. The LSS and HSS circuits respectively implement low-side and high-side driving of the headlight module 2 to adapt to headlight loads with different topologies and achieve precise adjustment of light brightness through pulse width modulation. Through the flexible combination and configuration of these various driving circuits, the driver 323 can be compatible with various types of headlight modules 2, including resistive loads, constant current loads, and constant voltage loads, and supports multiple independent outputs to meet the coordinated driving requirements of multi-functional lights such as high and low beams, daytime running lights, turn signals, and position lights.

[0079] Specifically, the controller 322 acquires the lamp function request signal through the first signal input interface 312, and simultaneously samples the voltage of the vehicle body power supply at the power input interface 311 to obtain a voltage status signal. The controller 322 determines whether the current power supply conditions meet a preset threshold based on the voltage status signal. If the determination result is yes, the controller 322 responds to the lamp function request signal by generating a corresponding drive command and sending it to the driver 323. After receiving the drive command, the driver 323 drives the vehicle lamp module 2 to perform the corresponding lighting or dimming action. When the controller 322 determines that the voltage status signal is abnormal, the controller 322 generates a corresponding diagnostic signal through the diagnostic output interface 313 and feeds it back to the vehicle body module 1.

[0080] Thus, by directly connecting the power input interface 311 to the input terminal of the linear regulator module 321, placing it at the front end of the controller 322, high-frequency noise and voltage spikes in the vehicle's power supply can be effectively filtered out. By providing the controller 322 with a clean and stable low-voltage power supply, the controller 322 can operate reliably in complex vehicle power supply environments, while reducing the power supply design complexity of the subsequent driver 323. Furthermore, the linear regulator module 321 focuses on power purification, the controller 322 focuses on logic judgment and instruction generation, and the driver 323 focuses on power output. The cascaded architecture consisting of the controller 322, the linear regulator module 321, and the driver 323 has a clear functional division, allowing each module to be selected and optimized independently, facilitating system integration and fault location, and reducing development costs and maintenance difficulty.

[0081] In one example, such as Figure 5 As shown, the second interface circuit 33 includes a second signal input interface 331, a power output interface 332, and an analog signal output interface 333. The second signal input interface 331 is connected to both the headlight module 2 and the controller 322, and is used to receive analog feedback signals from the headlight module 2 and transmit them to the controller 322. The analog feedback signals include, but are not limited to, at least one of the current feedback signal, voltage feedback signal, and temperature feedback signal from the headlight module 2. The power output interface 332 is connected to both the headlight module 2 and the driver 323, and is used to transmit the drive current or drive voltage output by the driver 323 to the headlight module 2 to drive the headlight module 2 to perform lighting, dimming, or turning-off actions. The analog signal output interface 333 is connected to both the controller 322 and the headlight module 2, and is used to output analog control signals generated by the controller 322 to the headlight module 2 to achieve fine adjustment of the operating state of the headlight module 2.

[0082] Specifically, the controller 322, based on the lamp function request signal acquired via the first signal input interface 312 and the voltage status signal acquired via the power input interface 311, performs a comprehensive judgment, generates a corresponding drive command, and sends it to the driver 323. The driver 323 generates a corresponding drive current or drive voltage based on the drive command and outputs it to the headlight module 2 via the power output interface 332 to drive the headlight module 2 to perform the corresponding lamp function. Simultaneously, the controller 322 outputs an analog control signal to the headlight module 2 via the analog signal output interface 333. This analog control signal is used to assist in adjusting the brightness, color temperature, or operating mode of the headlight module 2. The headlight module 2 operates under the influence of the drive signal and the analog control signal, and transmits the acquired analog feedback signal back to the controller 322 via the second signal input interface 331. The controller 322 performs closed-loop adjustment of the driver 323's drive output based on the analog feedback signal to correct deviations in the drive current or drive voltage, making the actual operating state of the headlight module 2 approach the target state.

[0083] Optionally, the analog feedback signals received by the second signal input interface 331 include the current sampling signal, voltage sampling signal, and temperature sampling signal of the headlight module 2. The controller 322 determines whether the current drive current has reached the target value based on the current sampling signal, whether the power supply to the headlight module 2 is normal based on the voltage sampling signal, and whether the headlight module 2 is in an over-temperature state based on the temperature sampling signal. If the temperature is over-temperature, the controller 322 generates a corresponding overheat diagnostic signal through the diagnostic output interface 313 and feeds it back to the body module 1.

[0084] Thus, by separating the power output interface 332 and the analog signal output interface 333, this application achieves separation of the power drive signal and the analog adjustment signal in the transmission path, avoiding the problem of coupling interference caused by high current power signals to weak analog signals, and improving the accuracy of analog control signals and the consistency of the response of the headlight module 2. Secondly, the analog feedback signal of the headlight module 2 is acquired through the second signal input interface 331 and transmitted back to the controller 322, enabling the controller 322 to dynamically adjust the output of the driver 323 according to the actual working state of the headlight module 2. This effectively compensates for output deviations caused by factors such as temperature drift, component aging, and load differences, significantly improving the consistency of the headlight module 2's luminous brightness, color temperature stability, and long-term operational reliability.

[0085] It is worth noting that the controller 322 in this application is equipped with multiple sampling channels to collect the first parameter information and the second parameter information. For example, as shown... Figure 5 As shown, the controller 322 is provided with a first sampling channel AD1 and a second sampling channel AD2. The controller 322 may also be provided with other numbers of sampling channels, but this embodiment does not limit this.

[0086] In one example, the lighting drive system may also include communication circuitry, which includes a Controller Area Network (CAN) chip connected to the Universal Asynchronous Receiver / Transmitter (UART) interface of the controller 322 for communication control with the matrix chip on the lamp board in CV mode.

[0087] Figure 6 This is a schematic diagram of another lighting driving system provided in the embodiments of this application.

[0088] For example, such as Figure 6 As shown, the lighting drive module 3 provided in this application is connected to the body module 1 via the first interface circuit 31 and to the headlight module 2 via the second interface circuit 33.

[0089] The configuration information in this application is a machine-executable file generated by the host computer configuration software tool. This system can use a dedicated MCU programming tool to write the configuration information to the Flash (memory) address range specified by the system software, thereby initializing system operating parameters and customizing functions. The specific implementation process is as follows: After the system is powered on or reset, the controller 322 reads the configuration information from the Flash address range and parses the configuration information according to the preset data parsing rules to obtain operating parameters such as lamp function mapping relationships, PWM dimming parameters, and upper and lower limits of diagnostic thresholds. The controller 322 configures the operating mode and control logic of the driver 323 based on the parsed configuration information, so that the driver 323 drives the vehicle lamp module 2 to perform corresponding lamp function actions according to the driving parameters defined in the configuration information.

[0090] Thus, the configuration information of this application is stored in the Flash address range specified by the system software, rather than being embedded in the program code. This decouples the lamp function parameters from the program logic, allowing configuration information to be updated independently without recompiling or upgrading the firmware, significantly shortening the cycle of lamp function debugging and matching. Secondly, by storing the configuration information separately from the program firmware, the same firmware program can be adapted to various vehicle lamp models, various lamp function combinations, and various diagnostic strategies by burning different configuration files. This greatly enhances the platform reusability and cross-project portability of this drive module, resulting in high versatility.

[0091] In summary, the lighting drive module 3 provided in this application has multiple configuration information pre-stored in the control circuit 32 for different vehicle body modules 1 and / or different specifications of headlight modules 2. It then combines the first parameter information and the second parameter information to determine the corresponding target configuration information, thereby controlling the operation of the headlight module 2. That is, the lighting drive module 3 of this application can achieve adaptive compatibility across vehicle models and specifications, exhibiting high versatility. Furthermore, the lighting drive module 3 only needs to modify the pre-stored configuration information to adapt to different headlight models, eliminating the need for redeveloping hardware and software for each headlight model. This effectively reduces the development steps of the drive module in the development of new headlights, significantly lowers development costs, shortens the development cycle, and saves substantial human and material resources.

[0092] Furthermore, in terms of material management, the same lighting drive module 3 can be used for multiple vehicle lights by switching configuration information. OEMs and parts suppliers only need to keep a small number of universal drive modules on hand to cover the needs of multiple models, significantly reducing the variety of inventory and management complexity. In terms of manufacturing, the production line does not need to frequently switch between different drive module models, which helps improve assembly efficiency and automation levels. In terms of after-sales maintenance, repair personnel only need to be equipped with a small number of universal drive modules to handle the repair and replacement needs of multiple vehicle models, effectively avoiding problems such as misuse of spare parts, shortages, or stockpiling, and reducing after-sales maintenance costs and complexity.

[0093] This application also provides a light driving method. In one example... Figure 7 This is a schematic flowchart of a lighting driving method provided in an embodiment of this application; the method 100 includes S101 to S103; S101 to S103 are described in detail below.

[0094] The lighting driving method is applied to the lighting driving system in the aforementioned vehicle, and the lighting driving system can be as follows: Figures 2 to 6 As shown.

[0095] S101. Receive first parameter information from the vehicle body module via the first interface circuit, and receive second parameter information from the headlight module via the second interface circuit.

[0096] It should be understood that during system power-on or operation, the control circuit obtains first parameter information from the vehicle module in real time via the first interface circuit. This first parameter information may include at least one of the vehicle network protocol type, power supply voltage level, and communication baud rate. Simultaneously, the control circuit obtains second parameter information from the headlight module via the second interface circuit. This second parameter information may include at least one of the headlight type identifier, rated power, rated current, and number of LED strings.

[0097] S102. Determine the target configuration information that matches the first parameter information and the second parameter information from multiple configuration information.

[0098] It should be understood that the control circuit pre-stores multiple configuration information sets, which are the parameter sets required for the control circuit to operate. It is worth noting that different configuration information sets correspond to different vehicle body modules and / or different specifications of headlight modules.

[0099] S103. Control the working mode of the vehicle headlight module via the second interface circuit according to the target configuration information.

[0100] Thus, in the lighting driving method provided in this application, the control circuit pre-stores multiple configuration information corresponding to different vehicle body modules and / or different specifications of headlight modules, and combines the first parameter information and the second parameter information to determine the corresponding target configuration information, thereby controlling the operation of the headlight module. That is, the lighting driving method of this application can achieve adaptive compatibility across vehicle models and specifications, and has high versatility. Secondly, it only requires changing the pre-stored configuration information to adapt to different headlight models, eliminating the need for redeveloping hardware for each headlight model and the need to redevelop supporting software. This effectively reduces the supporting development steps of the driving module in the development process of new headlights, significantly reduces development costs, shortens the development cycle, and saves a significant amount of human and material resources.

[0101] The following is about Figure 7 The implementation methods of each step in the illustrated embodiment are explained in detail below: Regarding step S102, in some embodiments, the configuration information includes at least one or more of the following: input interface configuration parameters, power supply configuration parameters, current detection configuration parameters, output interface configuration parameters, fan management configuration parameters, power derating configuration parameters, thermal derating configuration parameters, lamp control priority configuration parameters, failure mode configuration parameters, diagnostic output configuration parameters, and chip initialization configuration parameters.

[0102] Optionally, the configuration information may also include other configuration information, which is not limited in this embodiment of the application.

[0103] In this step, the configuration information of this application covers multiple dimensions, including input interface configuration, power supply configuration, BIN current configuration, output interface configuration, fan management configuration, power derating configuration, thermal derating configuration, lamp control priority configuration, LED failure mode configuration, diagnostic output configuration, and chip initialization configuration. This enables the control circuit to perform comprehensive and precise control over the vehicle lighting module. Secondly, the configuration parameters in the configuration information can be flexibly combined according to actual needs, allowing the same hardware platform to meet the differentiated functional requirements of different vehicle models and different lighting specifications, thus fully adapting to the functional requirements of various vehicle lighting structures. Furthermore, in practical applications, most vehicle lighting functions can be controlled simply by changing the configuration information, without modifying the underlying software code or hardware circuitry. This gives the lighting driver module cross-vehicle and cross-specification platform adaptability, achieving compatibility adaptation of a single driver module to multiple lighting modules and vehicle models, effectively shortening the overall vehicle development cycle and reducing material management costs.

[0104] Based on the above configuration information, this application embodiment also provides a light driving method. In one example, Figure 8 This is a schematic flowchart of another light driving method provided in the embodiments of this application; the method 200 includes S201 to S2021; S201 to S2021 are described in detail below.

[0105] S201, Power on the drive.

[0106] S202, System Initialization.

[0107] S203. Start the ADC and acquire BIN data.

[0108] S204. Read configuration information from Flash.

[0109] S205. Has the configuration information been verified? If yes, proceed to S206; otherwise, proceed to S204.

[0110] S206. Query the chip initialization configuration parameters and execute the relevant chip initialization configuration.

[0111] S207. Collect the first parameter information and the second parameter information.

[0112] S208. Check if the first parameter information and the second parameter information are valid. If yes, proceed to S209; otherwise, proceed to S207.

[0113] S209. Query the input interface configuration information to determine which lamp function corresponds to the input signal channel.

[0114] S2010. Query the power configuration information to determine whether the input voltage meets the conditions for turning on the lights. If yes, proceed to S2011; otherwise, proceed to S2012.

[0115] S2011. Query the light control priority configuration information to determine if there is a light-on priority. If yes, proceed to S2014; otherwise, proceed to S2012.

[0116] S2012. Query the output interface configuration parameters and set the output to off according to the output mode configured for this lamp.

[0117] S2013, Light function off.

[0118] S2014. Query the current detection configuration parameters, obtain the BIN acquisition information, and calculate the BIN current.

[0119] S2015. Query the thermal derating configuration parameters, obtain the data collected by the lamp's NTC, and perform the corresponding derating calculation.

[0120] S2016. Query the power derating configuration parameters, obtain the input voltage data of the lamp, and perform the corresponding derating calculation.

[0121] S2017. Based on the comprehensive derating calculation results, the current value to be output by the lamp is calculated.

[0122] S2018. Query the output interface configuration parameters and set the corresponding current output according to the output mode configured for this lamp.

[0123] S2019, Light function is on.

[0124] S2020: Query the fan management configuration parameters to determine whether the fan is running.

[0125] S2021. If an LED is detected to be faulty, query the failure mode configuration parameters and execute the software control logic according to the corresponding failure strategy.

[0126] S2022. Query the diagnostic output configuration parameters and configure the diagnostic signal output according to the lamp configuration.

[0127] This embodiment also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to implement a light driving method provided in the above embodiment.

[0128] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned steps to implement a lighting driving method provided in the above embodiment.

[0129] In this embodiment, the computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0130] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0131] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0132] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lighting driving module, applied to a vehicle, the vehicle comprising a body module and a headlight module, characterized in that, The lighting driver module includes: A first interface circuit is connected to the vehicle body module. Control circuit, the control circuit being connected to the first interface circuit; and, The second interface circuit is connected to the control circuit and the vehicle light module. The control circuit contains multiple configuration information, and different configuration information corresponds to the body module of different models and / or the headlight module of different specifications. The control circuit is used to receive first parameter information from the body module via the first interface circuit and second parameter information from the headlight module via the second interface circuit, and to determine target configuration information that matches the first parameter information and the second parameter information from a plurality of configuration information, and to control the working mode of the headlight module via the second interface circuit according to the target configuration information.

2. The lighting driving module according to claim 1, characterized in that, The first interface circuit has a unified first interface definition for connecting to the body module of different vehicle models; And / or, The second interface circuit has a unified second interface definition for connecting to the vehicle headlight modules of different specifications.

3. The lighting driving module according to claim 1, characterized in that, The configuration information includes at least one or more of the following: input interface configuration parameters, power supply configuration parameters, current detection configuration parameters, output interface configuration parameters, fan management configuration parameters, power derating configuration parameters, thermal derating configuration parameters, lighting priority configuration parameters, failure mode configuration parameters, diagnostic output configuration parameters, and chip initialization configuration parameters.

4. The lighting driving module according to claim 1, characterized in that, The first interface circuit includes: A power input interface is provided, which is connected to the power output terminal of the body module and the control circuit. The power input interface is used to receive the body power from the body module and to provide power voltage to the control circuit. A first signal input interface is connected to the light function signal output terminal of the vehicle body module. This first signal input interface is used to receive a light function request signal from the vehicle body module. A diagnostic output interface is connected to the diagnostic receiver of the body module and the control circuit. The diagnostic output interface is used to output the lamp function diagnostic signal generated by the control circuit to the body module. The first parameter information includes the voltage status signal of the vehicle body power supply and / or the light function request signal.

5. The lighting driving module according to claim 4, characterized in that, The control circuit includes: A linear voltage regulator module, wherein the input terminal of the linear voltage regulator module is connected to the power input interface; The controller is connected to the output terminal of the linear regulator module, the first signal input interface, and the power input interface; and, A driver, which is connected to the controller and the headlight module.

6. The lighting driving module according to claim 5, characterized in that, The second interface circuit includes: A second signal input interface is connected to the vehicle headlight module and the controller, and the second signal input interface is used to receive the analog feedback signal from the vehicle headlight module. A power output interface, connected to the vehicle headlight module and the driver, wherein the power output interface is used to output drive current or drive voltage to the vehicle headlight module; and... An analog signal output interface is provided, wherein the power output interface is connected to the headlight module and the driver, and the analog signal output interface is used to output analog control signals to the headlight module.

7. A lighting driving method, characterized in that, Applied to the lighting driving module as described in any one of claims 1-6, the method comprises: The system receives first parameter information from the vehicle body module via the first interface circuit, and second parameter information from the headlight module via the second interface circuit. Determine the target configuration information that matches the first parameter information and the second parameter information from multiple configuration information; The operating mode of the vehicle lighting module is controlled via the second interface circuit according to the target configuration information.

8. The light driving method according to claim 7, characterized in that, The configuration information includes at least one or more of the following: input interface configuration parameters, power supply configuration parameters, current detection configuration parameters, output interface configuration parameters, fan management configuration parameters, power derating configuration parameters, thermal derating configuration parameters, lighting priority configuration parameters, failure mode configuration parameters, diagnostic output configuration parameters, and chip initialization configuration parameters.

9. A lighting driving system, characterized in that, The lighting driving system includes: Body module; The lighting drive module as described in any one of claims 1-6, wherein the lighting drive module is connected to the vehicle body module; and, The vehicle headlight module is connected to the light driving module.

10. A vehicle, characterized in that, include: The car body; and, The lighting drive system as described in claim 9 is disposed on the vehicle body.

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