Headlight System Control Method, Vehicle, and Storage Medium

Abstract

The present invention discloses a control method for a vehicle lamp system, a vehicle, and a storage medium. Among them, the method includes: obtaining operating condition parameters of the vehicle lamp system of the vehicle; determining one of more than one preset derating curves as a target derating curve according to the operating condition parameters; and controlling the operation of the vehicle lamp system according to the target derating curve. The purpose of the present invention is to improve the derating accuracy of the vehicle lamp system, be closer to the actual operating conditions of the vehicle lamp system, ensure the effective use of luminous flux in different lighting modes of the vehicle lamp system, avoid the over-performance of the vehicle lamp system, realize the maximum illumination of the road surface by the vehicle lamp, ensure the high-temperature resistance life of electronic devices in the vehicle lamp system, and also avoid the sudden decrease of luminous flux, reduce the visual impact on the driver during the derating process, and improve the driving safety of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a control method for a vehicle lamp system, a vehicle, and a storage medium. Background Art

[0002] Currently, during the operation of the vehicle lamp system on a vehicle, a derating curve is generally required for control, and derating is performed at a constant rate when the derating starting temperature in the derating curve is reached.

[0003] However, generally there is only a single derating curve for controlling the vehicle lamp system. The vehicle lamp system generally has multiple lighting modes. Under the control of a single derating curve, some lighting modes will be derated too much, resulting in ineffective use of the luminous flux, causing over - performance of the vehicle lamp system. In some lighting modes, the vehicle lamp system will be derated too little, leading to too high a temperature and reducing the service life of the vehicle lamp system. Moreover, during the derating process, derating is generally performed at a constant rate, which will cause an obvious perception of the light pattern dimming by the customer at the initial stage of derating, and the visual impact felt by the driver affects driving safety. In addition, the formulation of the derating curve does not consider the influence of the vehicle driving state. When controlling the derating of the vehicle lamp system according to the derating curve, the derating is likely to be too much or too little, resulting in over - performance of the vehicle lamp system or too high a temperature, damaging the life of electronic components. Summary of the Invention

[0004] The main purpose of the present invention is to provide a control method for a vehicle lamp system, a vehicle, and a storage medium, aiming to improve the derating accuracy of the vehicle lamp system, be closer to the actual operating conditions of the vehicle lamp system, ensure the effective use of the luminous flux in different lighting modes of the vehicle lamp system, avoid over - performance of the vehicle lamp system, realize maximizing the illumination of the road surface by the vehicle lamp while ensuring the high - temperature resistance life of the electronic components in the vehicle lamp system, and also avoid a sudden decrease in the luminous flux, reduce the visual impact on the driver during the derating process, and improve the driving safety of the vehicle.

[0005] To achieve the above object, the present invention provides a control method for a vehicle lamp system, and the control method for the vehicle lamp system includes the following steps:

[0006] Obtain the operating condition parameters of the vehicle lamp system of the vehicle;

[0007] Determine one of more than one preset derating curves as the target derating curve according to the operating condition parameters;

[0008] Control the operation of the vehicle lamp system according to the target derating curve.

[0009] Optionally, the operating condition parameters include at least one of the following parameters:

[0010] Whether the vehicle lamp system has a need for curve lighting;

[0011] Whether the vehicle lamp system has enabled a preset low beam lighting mode;

[0012] Whether the current time period during which the vehicle is running is within a target time period, and the environmental parameters corresponding to the target time period are greater than preset parameters;

[0013] Whether the vehicle is in an idle state and has lasted for more than a preset duration;

[0014] The target lighting mode required to be enabled according to the current driving state of the vehicle.

[0015] Optionally, the step of obtaining the operating condition parameters of the vehicle lamp system of the vehicle includes:

[0016] Obtain the vehicle speed and the steering angle of the vehicle; determine whether the vehicle lamp system has a curve lighting requirement according to the vehicle speed and the steering angle;

[0017] And / or, obtain the first opening and closing state parameter of the low beam function of the vehicle lamp system and the second opening and closing state parameter of the adaptive headlamp function; determine whether the vehicle lamp system has enabled the preset low beam lighting mode according to the first opening and closing state parameter and the second opening and closing state parameter;

[0018] And / or, obtain the current time information of the vehicle operation and the environmental illuminance of the environment where the vehicle is located, and determine whether the current time period during which the vehicle is running is within the target time period according to the time information and the environmental illuminance, and the target time period is the daytime in summer;

[0019] And / or, obtain the engine operation parameter, the transmission operation parameter and the motion characteristic parameter of the vehicle, and determine whether the vehicle is in the idle state and has lasted for more than a preset duration according to the engine operation parameter, the transmission operation parameter and the motion characteristic parameter.

[0020] Optionally, the step of determining one of more than one preset derating curves as the target derating curve according to the operating condition parameters includes:

[0021] When the vehicle lamp system has a curve lighting requirement, determine the curve corresponding to the target lighting mode among more than one first preset derating curves as the target derating curve;

[0022] When the headlight system does not have the cornering lighting requirement and the preset low beam lighting mode is not turned on, or when the headlight system does not have the cornering lighting requirement, the preset low beam lighting mode is turned on and the current time period is not within the target time period, or when the headlight system does not have the cornering lighting requirement, the preset low beam lighting mode is turned on, the current time period is within the target time period, the vehicle is not in the idle state and lasts for more than the preset duration, determine the curve corresponding to the target lighting mode among more than one second preset derating curves as the target derating curve;

[0023] When the headlight system does not have the cornering lighting requirement, the preset low beam lighting mode is turned on, the current time period is within the target time period, and the vehicle is in the idle state and lasts for more than the preset duration, determine the third preset derating curve as the target derating curve.

[0024] Optionally, the first preset derating curve is a derating curve tested under a first target condition in a first state, where the first state includes that during the vehicle driving, the headlight system has cornering lighting in the corresponding target lighting mode, and the first target condition includes that when the headlight system operates at rated operating parameters as a whole under a first target ambient temperature, the luminous flux of the headlight system reaches a first target luminous flux, and when the headlight system operates at minimum operating parameters as a whole under the most severe ambient temperature, the temperature of the headlight system is less than the safety threshold;

[0025] The second preset derating curve is a derating curve determined under a second target condition in a second state, where the second state includes that during the vehicle driving, the headlight system has cornering lighting in the corresponding target lighting mode, and the second target condition includes that when the headlight system operates at rated operating parameters as a whole under a second target ambient temperature, the luminous flux of the headlight system reaches a second target luminous flux, and when the headlight system operates at minimum operating parameters as a whole under the most severe ambient temperature, the temperature of the headlight system is less than the safety threshold;

[0026] The third preset derating curve is a derating curve tested under a third target condition in a third state. The third state includes that when the vehicle is in an idle state, the headlight system has curve lighting in the preset low beam illumination mode. The third target condition includes that the first side of the headlight system is at a third target ambient temperature and the second side of the headlight system is at a fourth target ambient temperature, and the headlight system operates while maintaining rated operating parameters, and the luminous flux of the headlight system reaches a third target luminous flux. The third target ambient temperature is lower than the fourth target ambient temperature. The first side is the side of the headlight system away from the vehicle's engine, and the second side is the side of the headlight system close to the engine, and the temperature of the headlight system is less than the safety threshold when the headlight system as a whole is operating at the minimum operating parameters under the most severe ambient temperature;

[0027] The first target ambient temperature, the second target ambient temperature, the third target ambient temperature, and the fourth target ambient temperature are all lower than the most severe ambient temperature.

[0028] Optionally, the first state further includes that the vehicle travels at a preset vehicle speed associated with the corresponding target lighting mode;

[0029] The second state further includes that the vehicle travels at a preset vehicle speed associated with the corresponding target lighting mode;

[0030] Among them, different target lighting modes correspond to different preset vehicle speeds.

[0031] Optionally, the headlight system is an adaptive front lighting system, and the target lighting mode is one of multiple low beam lighting modes corresponding to the adaptive front lighting system. Different low beam lighting modes correspond to different first preset derating curves and different second preset derating curves.

[0032] Optionally, the preset derating curve includes a first curve segment, a second curve segment connected to the first curve segment, and a third curve segment connected to the second curve segment. The first curve segment represents that as the temperature of the environment where the headlight system is located increases, the operating parameters of the headlight system remain unchanged at the rated operating parameters. The second curve segment represents that as the temperature of the environment where the headlight system is located increases, the operating parameters of the headlight system show a downward trend and are less than the rated operating parameters. The third curve segment represents that as the temperature of the environment where the headlight system is located increases, the operating parameters of the headlight system remain unchanged at the minimum operating parameters, and the minimum operating parameters are less than the rated operating parameters.

[0033] Optionally, different preset derating curves correspond to different test states of the headlight system. Before the step of obtaining the operating condition parameters of the headlight system of the vehicle, it further includes:

[0034] Obtain the initial derating curve that meets the corresponding target conditions measured by the vehicle lamp system in each of the test states. The initial derating curve includes the first curve segment, the initial curve segment corresponding to the second curve segment, and the third curve segment. Define the temperature of the environment where the vehicle lamp system is located corresponding to the connection point between the initial curve segment and the third curve segment as the cut-off temperature;

[0035] Shrink the rated operating parameters according to more than one preset parameter adjustment value to obtain more than one target operating parameter, and shrink the cut-off temperature according to the more than one preset temperature adjustment value to obtain more than one target ambient temperature;

[0036] Obtain the ambient temperature value corresponding to each of the target operating parameters and the operating parameter value of the vehicle lamp system corresponding to each of the cut-off temperatures in each of the test states of the vehicle lamp system;

[0037] Adjust the corresponding initial curve segment according to the more than one target operating parameter and its corresponding ambient temperature value, and the more than one cut-off temperature and its corresponding operating parameter value, to obtain more than one preset derating curve.

[0038] In addition, to achieve the above object, the present application also proposes a vehicle, which includes:

[0039] A vehicle lamp system;

[0040] A control device, the vehicle lamp system is connected to the control device, and the control device includes:

[0041] A memory, a processor, and a vehicle lamp system control program stored on the memory and executable on the processor. When the vehicle lamp system control program is executed by the processor, the steps of the vehicle lamp system control method described in any one of the above are implemented.

[0042] In addition, to achieve the above object, the present application also proposes a storage medium, on which a vehicle lamp system control program is stored. When the vehicle lamp system control program is executed by a processor, the steps of the vehicle lamp system control method described in any one of the above are implemented.

[0043] A control method for a vehicle headlight system proposed by the present invention selects one of more than one preset derating curves as the target interval curve based on the operating condition parameters of the vehicle headlight system to control the operation of the headlight system. Based on this, the derating curve applied to the operation control of the headlight system is no longer a single one, but can be selected from different preset derating curves according to the actual working conditions. The derating curve of the headlight system is accurately matched with the actual working conditions, and the derating amplitude during the operation process is neither too large nor too small, effectively improving the derating accuracy of the headlight system, realizing the maximum illumination of the road surface by the headlight, and at the same time ensuring the high-temperature resistance life of the electronic devices in the headlight system.

[0044] Furthermore, there are more than one preset derating curves available for selection. Different preset derating curves can be correspondingly selected to control the operation of the headlight system according to different low-beam illumination modes of the headlight system, which can ensure that the luminous flux can be effectively used under different low-beam illumination modes, and avoid the situation of performance overcapacity under different low-beam illumination modes to ensure the high-temperature resistance life of the electronic devices.

[0045] Furthermore, test curves are carried out at different preset vehicle speeds corresponding to different low-beam illumination modes, fully considering the influence of vehicle speed on the working temperature of the headlight system, which is beneficial to improving the accuracy of the preset derating curves formulated. When controlling the operation of the headlight system by selecting the corresponding preset derating curve according to the low-beam illumination mode, it further ensures that the luminous flux of the headlight system can be effectively used under different low-beam illumination modes, and avoids the situation of performance overcapacity under different low-beam illumination modes to ensure the high-temperature resistance life of the electronic devices.

[0046] Furthermore, the preset derating curve is obtained by adjusting the initial derating curve based on more than one control point for the rated operating parameters and cut-off points respectively, so as to ensure that when controlling the operation of the headlight system according to the preset derating curve, the sudden reduction of luminous flux in the initial stage of derating can be avoided, reducing the visual impact on the driver and improving the driving safety of the vehicle. Description of the Drawings

[0047] Figure 1 It is a schematic diagram of the hardware structure involved in the operation of an embodiment of the vehicle of the present invention;

[0048] Figure 2 It is a schematic flowchart of an embodiment of the control method of the headlight system of the present invention;

[0049] Figure 3 It is a schematic flowchart of another embodiment of the control method of the headlight system of the present invention;

[0050] Figure 4 It is a schematic diagram of the preset derating curve involved in another embodiment of the control method of the headlight system of the present invention;

[0051] Figure 5Schematic flowchart of yet another embodiment of the control method for the vehicle headlight system of the present invention.

[0052] The implementation, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0053] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0054] The main solution of the embodiment of the present invention is: obtaining the operating condition parameters of the vehicle headlight system; determining one of more than one preset derating curves as the target derating curve according to the operating condition parameters; controlling the operation of the headlight system according to the target derating curve.

[0055] In the prior art, generally there is only a single derating curve for controlling the headlight system. After the headlight system operates according to the parameters corresponding to the derating curve, it is easy for the headlight system to derate too much or too little. The lack of accuracy in derating control may cause the headlights to fail to illuminate the road surface or the actual working temperature of the headlights to exceed the safety threshold and be damaged.

[0056] The present invention provides the above solution to improve the derating accuracy of the headlight system and protect the headlights from damage while enabling the headlights to illuminate the road surface.

[0057] The embodiment of the present invention proposes a vehicle, which can be a vehicle using traditional energy or a vehicle using new energy such as electric energy.

[0058] In the embodiment of the present invention, the vehicle includes a headlight system 2 and a control device 1. In this embodiment, the headlight system 2 is an adaptive front lighting system (i.e., AFS system). In other embodiments, the headlight system 2 can also be a traditional headlight system 2 (for example, a headlight system formed by a combination of low beam lights, high beam lights, running lights and front fog lights).

[0059] In this embodiment, the AFS system is a light follow-up system that makes the low beam light axis rotate left and right in the horizontal direction in conjunction with the steering wheel angle, and swing up and down in conjunction with the vehicle height in the vertical direction, or a light system that adjusts the brightness of each LED to achieve different low beam light types. The AFS system specifically includes a headlamp module, a rotation module, and a sensor group (for example, a photosensitive sensor, a vehicle speed sensor, a vehicle height sensor, a steering wheel angle sensor, a rain sensor, a fog sensor, a wind speed sensor, a particle sensor, a vehicle position sensor, etc.). The sensor group can be used to detect the detection data required for the operation of the vehicle light system 2, and the control device 1 can control the operation of the headlamp module and the rotation module according to the data detected by the sensor group. The headlamp module can adjust the horizontal angle and vertical angle of the headlamp by rotating the motor, and can adjust the light type by moving the grating. The rotation module can rotate the headlamp module to adjust its irradiation angle and irradiation range.

[0060] In the embodiment of the present invention, refer to Figure 1 The control device 1 includes: a processor 1001 (such as a CPU), a memory 1002, a timer 1003, etc. The various components in the control device 1 are connected via a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0061] Those skilled in the art will understand that Figure 1 The device structure shown in the figure does not constitute a limitation of the device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0062] like Figure 1 As shown, the memory 1002 as a storage medium may include a vehicle light system control program. Figure 1 In the device shown, the processor 1001 can be used to call the vehicle light system control program stored in the memory 1002 and execute the relevant steps of the vehicle light system control method in the following embodiments.

[0063] An embodiment of the present invention further provides a vehicle light system control method, which is applied to the vehicle light system control in the above-mentioned vehicle.

[0064] Reference Figure 2 , an embodiment of the vehicle light system control method of the present application is proposed. In this embodiment, the vehicle light system control method includes:

[0065] Step S10, obtaining operating condition parameters of the vehicle lighting system;

[0066] The operating condition parameters specifically refer to the relevant parameters that have an impact on the operation of the headlight system during its operation in the scene where it is located. The operating condition parameters can be specifically determined by obtaining the current state parameters of the vehicle and / or the parameters detected by in-vehicle sensors.

[0067] Step S20: Determine one of more than one preset derating curves as the target derating curve according to the operating condition parameters;

[0068] Different operating condition parameters correspond to different target derating curves. Specifically, derating curves corresponding to different operating conditions of different headlight systems can be established in advance as preset derating curves, and the target conditions that the operating condition parameters corresponding to different operating conditions need to reach can be established in advance. When the current operating condition parameters match the target conditions, the preset derating curve corresponding to the operating condition corresponding to the target conditions is used as the target derating curve.

[0069] The preset derating curve represents a characteristic curve of the operating parameters of the headlight system changing with the temperature of its environment. The preset derating curve at least includes a first curve segment and a second curve segment connected to the first curve segment. The first curve segment represents that the operating parameters of the headlight system remain unchanged at the rated operating parameters as the temperature of the environment where the headlight system is located increases. The second curve segment represents that the operating parameters of the headlight system show a decreasing trend and are less than the rated operating parameters as the temperature of the environment where the headlight system is located increases.

[0070] In this embodiment, the preset derating curve is a characteristic curve of the operating current of the headlight system changing with the ambient temperature of its environment. In other embodiments, the preset derating curve can also be a characteristic curve of the operating power or operating voltage of the headlight system, etc., changing with the ambient temperature of its environment.

[0071] Define the connection point between the first curve segment and the second curve segment as the derating starting point of the headlight system. Different preset derating curves correspond to different derating starting points. Based on the derating starting point, the starting temperature at which the headlight system starts to derate can be determined.

[0072] Further, the preset derating curve can also include a third curve segment connected to the second curve segment. The third curve segment represents that the operating parameters of the headlight system remain unchanged at the minimum operating parameters as the temperature of the environment where the headlight system is located increases. The connection point between the second curve segment and the third curve segment is the derating cut-off point of the headlight system. Different preset derating curves correspond to different derating starting points (such as point b in Figure 4 and derating cut-off points (such as point c in Figure 4 ). Based on the derating cut-off point, the ending temperature at which the headlight system stops derating can be determined.

[0073] Step S30: Control the operation of the headlight system according to the target derating curve.

[0074] Specifically, the ambient temperature of the headlight system's environment is detected, and the target operating parameters corresponding to the detected ambient temperature are determined in the target derating curve to control the operation of the headlight system.

[0075] Among them, when the detected ambient temperature is less than or equal to the derating start temperature in the target derating curve, the headlight system operates with rated operating parameters; when the detected ambient temperature is greater than the start temperature, the target operating parameters of the headlight system decrease as the ambient temperature increases. Further, when the target derating curve also includes a derating cut-off temperature, when the detected ambient temperature is greater than the start temperature and less than the derating cut-off temperature, the target operating parameters of the headlight system decrease as the ambient temperature increases. When the detected ambient temperature is greater than or equal to the cut-off temperature, the target operating parameters of the headlight system are maintained at the minimum operating parameters.

[0076] A method for controlling a headlight system proposed in an embodiment of the present invention selects one of more than one preset derating curves as the target interval curve based on the operating condition parameters of the headlight system on the vehicle to control the operation of the headlight system. Based on this, the derating curve applied to the operation control of the headlight system is no longer a single one, but can be selected from different preset derating curves based on the actual working conditions, so as to ensure that the derating curve of the headlight system can be accurately matched with the actual working conditions, and the derating amplitude during operation will not be too large or too small, effectively improving the derating accuracy of the headlight system, realizing the maximum illumination of the road surface by the headlight, and at the same time ensuring the high-temperature resistance life of the electronic devices in the headlight system.

[0077] Further, in this embodiment, all of the following parameters in the operating condition parameters:

[0078] Whether the headlight system has a need for curve lighting;

[0079] Whether the headlight system has enabled a preset low beam lighting mode;

[0080] Whether the current time period of the vehicle operation is in a target time period, and the environmental parameters corresponding to the target time period are greater than the preset parameters; wherein, the environmental parameters include environmental illuminance and / or ambient temperature, etc.;

[0081] Whether the vehicle is in an idle state and lasts for more than a preset duration;

[0082] The target lighting mode required for the current driving state of the vehicle.

[0083] Among them, the curve lighting requirement is the curve lighting emitted by the required vehicle lamp system. Specifically, the vehicle speed and the steering angle of the vehicle are obtained; whether the vehicle lamp system has a curve lighting requirement is determined according to the vehicle speed and the steering angle. When the vehicle speed is less than the preset vehicle speed and the steering angle is greater than the preset steering angle, it can be determined that the vehicle lamp system has a curve lighting requirement; when the vehicle speed is greater than or equal to the preset vehicle speed or the steering angle is less than the preset steering angle, it can be determined that the vehicle lamp system does not have a curve lighting requirement. In other embodiments, the curve lighting requirement can also be determined by obtaining the instruction status input by the user.

[0084] In this embodiment, the preset low beam lighting mode is the basic low beam lighting mode (C mode) in the AFS system lighting mode. The first opening and closing state parameter of the low beam function of the vehicle lamp system and the second opening and closing state parameter of the adaptive headlamp function are obtained; whether the vehicle lamp system has enabled the preset low beam lighting mode is determined according to the first opening and closing state parameter and the second opening and closing state parameter. The first opening and closing state parameter of the low beam function is specifically obtained by determining the state of the first physical switch corresponding to this function. The first physical switch can be controlled by the user. For example, when the first physical switch is turned on, it is determined that the first opening and closing state parameter is on, and when the first physical switch is turned off, it is determined that the first opening and closing state parameter is off. The second opening and closing state parameter of the adaptive headlamp function is specifically obtained by determining the state of the second physical switch corresponding to this function. The second physical switch can be controlled by the user. For example, when the second physical switch is turned on, it is determined that the second opening and closing state parameter is on, and when the second physical switch is turned off, it is determined that the second opening and closing state parameter is off. When the first opening and closing state parameter is that the low beam is on and the second opening and closing state parameter is that the adaptive headlamp function is on, it can be determined that the preset low beam lighting mode is on; otherwise, it can be determined that the preset low beam lighting mode is not on. In other embodiments, the preset low beam lighting mode can also be the low beam mode in the traditional vehicle lamp system. Based on this, when the first opening and closing state parameter is that the low beam is on, it can be determined that the preset low beam lighting mode is fully on; otherwise, it can be determined that the preset low beam lighting mode is not on.

[0085] The above target time period can be a time period set by the user or a time period set by the system by default. In this embodiment, the current time information of the vehicle operation and the ambient light intensity of the environment where the vehicle is located are obtained, and it is determined whether the current time period of the vehicle operation is within the target time period according to the time information and the ambient light intensity. The target time period is the daytime in summer. The time information in this embodiment includes the current date and the current time. The time information in other embodiments may also include one of the current date and the current time. The ambient light intensity can be specifically obtained through an ambient light sensor on the vehicle body. Among them, when the current date is a date in summer and the ambient light intensity is greater than a preset light intensity, it can be determined that the current time period is in the daytime in summer with a relatively high ambient temperature. When the current date and the ambient light intensity do not meet the above conditions, it can be determined that the current time period is not within the target time period. In other embodiments, it can also be determined that the current time period is within the target time period with a relatively high ambient temperature when the current date is a date in summer or the ambient light intensity is greater than the preset light intensity.

[0086] The idling state of the vehicle specifically refers to the state in which the vehicle engine runs in neutral. Specifically, in this embodiment, the engine operation parameters of the vehicle, the transmission operation parameters of the vehicle, and the motion characteristic parameters of the vehicle are obtained, and it is determined whether the vehicle is in the idling state and continues for more than a preset duration according to the engine operation parameters, the transmission operation parameters, and the motion characteristic parameters. Specifically, when the transmission operation parameter is that the transmission gear is in the P gear or the N gear and continues for more than a preset duration, and / or when the engine operation parameter is that the engine operation speed is the idling speed and continues for more than a preset duration, and / or when the motion characteristic parameter is that the vehicle speed is less than a preset speed and continues for more than a preset duration, it can be determined that the vehicle is in the idling state and continues for the preset duration; otherwise, it can be determined that the vehicle has not continued in the idling state for more than the preset duration. In addition, the motion characteristic parameter may also include the change of vehicle acceleration over time, etc.

[0087] The target lighting mode can be specifically determined by obtaining the driving speed of the vehicle, the environmental characteristics of the driving environment where the vehicle is located, etc. In this embodiment, one of the other low beam lighting modes other than the above preset low beam lighting mode and the preset low beam lighting mode is determined as the target lighting mode. In other embodiments, one of the other low beam lighting modes other than the preset low beam mode can be determined as the target lighting mode.

[0088] In this embodiment, by integrating the above multiple parameters, the current operating condition of the vehicle lamp system can be accurately reflected, and the target derating curve is selected from more than one preset derating curve according to the above parameters, which is beneficial to improving the accuracy of the selected target derating curve, thereby further improving the derating accuracy of the vehicle lamp system and realizing that the vehicle lamp illuminates the road surface while protecting the vehicle lamp from being damaged.

[0089] In other embodiments, the operating condition parameters may also include one or a part of the above parameters. Alternatively, in addition to the above parameters, the operating condition parameters may further include other parameters, such as whether the vehicle is braking, etc.

[0090] Further, based on the above embodiments, another embodiment of the control method for the vehicle lamp system of the present application is proposed. In this embodiment, referring to Figure 3 , the operating condition parameters include all of the above parameters, and step S20 includes:

[0091] Step S21, when the vehicle lamp system has a cornering lighting requirement, determine the curve corresponding to the target lighting mode among more than one first preset derating curve as the target derating curve;

[0092] Among more than one first preset derating curve, different target lighting modes may correspond to different first preset derating curves. Different first preset derating curves have different derating start temperatures and derating end temperatures.

[0093] The correspondence between the target lighting mode and the first preset derating curve can be preset in advance. Based on this correspondence, the first preset derating curve corresponding to the current target lighting mode can be determined as the target derating curve.

[0094] Step S22, when the vehicle lamp system does not have the cornering lighting requirement and the preset low beam lighting mode is not turned on, or when the vehicle lamp system does not have the cornering lighting requirement, the preset low beam lighting mode is turned on and the current time period is not within the target time period, or when the vehicle lamp system does not have the cornering lighting requirement, the preset low beam lighting mode is turned on, the current time period is within the target time period, the vehicle is not in the idle state and continues for more than the preset duration, determine the curve corresponding to the target lighting mode among more than one second preset derating curve as the target derating curve;

[0095] Among more than one second preset derating curve, different target lighting modes may correspond to different second preset derating curves. Different second preset derating curves have different derating start temperatures and derating end temperatures.

[0096] The correspondence between the target lighting mode and the second preset derating curve can be preset in advance. Based on this correspondence, the second preset derating curve corresponding to the current target lighting mode can be determined as the target derating curve.

[0097] Step S23, when the vehicle lamp system does not have the cornering lighting requirement, the preset low beam lighting mode is turned on, the current time period is within the target time period, and the vehicle is in the idle state and continues for more than the preset duration, determine the third preset derating curve as the target derating curve;

[0098] Among them, the first preset derating curve, the second preset derating curve, and the third preset derating curve are respectively the preset derating curves tested by the vehicle headlight system under different test states before the current moment. The states here include the operating state of the vehicle headlight system itself, the environmental state of the environment where the vehicle headlight system is located, and / or the driving state of the vehicle, etc.

[0099] The third preset derating curve, the second preset derating curve, and the first preset derating curve are different from each other, and respectively have different derating start temperatures and derating end temperatures.

[0100] In this embodiment, when the vehicle headlight system does not have a curve lighting requirement, the preset low beam lighting mode is turned on, the current period is within the target period, and the vehicle is in the idle state and lasts for more than the preset duration, it indicates that the vehicle headlight system is in a harsh working condition. At this time, regardless of the lighting mode required by the actual driving state of the vehicle, derating is performed independently of the light pattern required by the vehicle currently, avoiding excessive derating of the vehicle headlight system when derating according to the lighting mode, which may cause insufficient illuminance of the vehicle headlight system, improving the derating accuracy under harsh working conditions, so as to ensure that the vehicle can operate within the normal temperature range while achieving the required illuminance. When the vehicle headlight system has a curve lighting requirement, or when the vehicle headlight system does not have a curve lighting requirement and the preset low beam lighting mode is not turned on, or the preset low beam lighting mode is turned on and the current period is not within the target period, or the preset low beam lighting mode is turned on and the current period is within the target period and the vehicle is not in the idle state and lasts for more than the preset duration, the working condition of the vehicle headlight system is not very harsh. The corresponding target derating curve is selected in combination with the actual light pattern currently required by the vehicle. The preset derating curves available for selection are different when there is a curve lighting requirement and when there is no curve lighting requirement. Therefore, the derating operation of the vehicle headlight system can be accurately matched with the current actual lighting requirement of the vehicle, further improving the derating accuracy of the vehicle headlight system and effectively improving the energy efficiency of the vehicle headlight system under normal operating conditions.

[0101] Furthermore, in this embodiment, the vehicle headlight system is an adaptive front lighting system, and the target lighting mode is one of the multiple low beam lighting modes corresponding to the adaptive front lighting system. Different low beam lighting modes correspond to different first preset derating curves and different second preset derating curves.

[0102] In this embodiment, the above-mentioned preset low beam lighting mode can be one of the multiple low beam lighting modes here. In other embodiments, the preset low beam lighting mode may not be one of the multiple low beam lighting modes here.

[0103] In this embodiment, the multiple low beam lighting modes specifically include a basic low beam lighting mode (the corresponding light pattern is the C light pattern), an urban road low beam lighting mode (the corresponding light pattern is the V light pattern), and a highway low beam lighting mode (the corresponding light pattern is the E light pattern). In other embodiments, in addition to the modes mentioned here, the multiple low beam lighting modes may also include a bad weather low beam lighting mode (the corresponding light pattern is the W light pattern), etc.

[0104] In this embodiment, more than one preset derating curve is available for selection. Different low beam lighting modes of the vehicle lighting system can correspond to different preset derating curves to control the operation of the vehicle lighting system, which can ensure that the luminous flux can be effectively used in different low beam lighting modes, and avoid the situation of over-performance in different low beam lighting modes to ensure the high-temperature resistance life of electronic devices.

[0105] Further, in this embodiment, the first preset derating curve is the derating curve tested under the first target conditions in the first state. The first state includes that during the vehicle driving process, the vehicle lighting system has curve lighting in the corresponding target lighting mode. The first target conditions include that when the vehicle lighting system operates at the rated operating parameters as a whole under the first target ambient temperature, the luminous flux of the vehicle lighting system reaches the first target luminous flux, and when the vehicle lighting system operates at the minimum operating parameters as a whole under the most severe ambient temperature, the temperature of the vehicle lighting system is less than the safety threshold.

[0106] In this embodiment, different target lighting modes correspond to different first target luminous fluxes, and the first target ambient temperatures corresponding to different target lighting modes are the same. In other embodiments, the first target ambient temperatures corresponding to different target lighting modes may also be different.

[0107] Specifically, when the vehicle lighting system has curve lighting under the above C light pattern, V light pattern, and E light pattern respectively during the vehicle driving process, the first change relationship between the operating parameters of the vehicle lighting system and the overall ambient temperature can be tested, and the first preset derating curve of each corresponding target lighting mode can be determined based on the first target conditions and the first change relationship.

[0108] The temperature of the vehicle lighting system specifically refers to the junction temperature of the LEDs in the vehicle lighting system. The most severe ambient temperature is the maximum temperature allowed for the environment where the vehicle lighting system operates normally. The minimum operating parameter is the minimum electrical parameter allowed for the operation of the vehicle lighting system (specifically, it may include the minimum current or minimum power or minimum voltage, etc.). The safety threshold is the maximum temperature allowed when the vehicle lighting system is not damaged. Different target lighting modes can correspond to different minimum operating parameters. The minimum operating parameter is specifically the operating parameter of the vehicle lighting system corresponding to the most severe ambient temperature obtained by fitting the derating curve.

[0109] Further, when the overall headlight system operates at rated operating parameters under the first target ambient temperature, the luminous flux of the headlight system reaching the first target luminous flux includes: when the overall headlight system operates at rated operating parameters under the first target ambient temperature, the luminous flux of the headlight system reaches the first target luminous flux and the temperature of the headlight system is less than the safety threshold. Further, in this embodiment, the second preset derating curve is a derating curve determined under the second target condition in the second state. The second state includes that there is no curve lighting in the corresponding target lighting mode of the headlight system during the vehicle driving process. The second target condition includes that when the overall headlight system operates at rated operating parameters under the second target ambient temperature, the luminous flux of the headlight system reaches the second target luminous flux, and when the overall headlight system operates at the minimum operating parameters under the most severe ambient temperature, the temperature of the headlight system is less than the safety threshold.

[0110] Different target lighting modes correspond to different second target luminous fluxes, and the second target ambient temperatures corresponding to different target lighting modes are the same. In other embodiments, the second target ambient temperatures corresponding to different target lighting modes may also be different.

[0111] Specifically, during the vehicle driving process, when there is no curve lighting in the headlight system under the above C light type, V light type, and E light type respectively, the second change relationship between the operating parameters of the headlight system and the overall ambient temperature can be tested, and the second preset derating curve of each corresponding target lighting mode can be determined based on the second target condition and the second change relationship.

[0112] In this embodiment, the second target ambient temperature is the same as the above first target ambient temperature. In other embodiments, the first target ambient temperature may also be less than the second target ambient temperature.

[0113] Further, when the overall headlight system operates at rated operating parameters under the second target ambient temperature, the luminous flux of the headlight system reaching the second target luminous flux includes: when the overall headlight system operates at rated operating parameters under the second target ambient temperature, the luminous flux of the headlight system reaches the second target luminous flux and the temperature of the headlight system is less than the safety threshold.

[0114] Further, in this embodiment, the third preset derating curve is a derating curve tested under a third target condition in a third state. The third state includes that when the vehicle is in an idle state, there is no curve lighting in the preset low beam lighting mode of the headlight system. The third target condition includes that the first side of the headlight system is at a third target ambient temperature and the second side of the headlight system is at a fourth target ambient temperature, maintaining the rated operating parameters and the luminous flux of the headlight system reaching the third target luminous flux, and when the entire headlight system is operating at the minimum operating parameters at the most adverse ambient temperature, the temperature of the headlight system is less than the safety threshold. The third target ambient temperature is lower than the fourth target ambient temperature. The first side is the side of the headlight system away from the vehicle's engine, and the second side is the side of the headlight system close to the engine.

[0115] The third target ambient temperature can be lower than the above-mentioned first target ambient temperature and second target ambient temperature. The fourth target ambient temperature can be higher than the above-mentioned first target ambient temperature and second target ambient temperature. The first target ambient temperature, the second target ambient temperature, the third target ambient temperature, and the fourth target ambient temperature are all less than the most adverse ambient temperature.

[0116] Specifically, when the vehicle is in an idle state and there is no curve lighting in the above C light pattern of the headlight system, the third change relationship between the operating parameters of the headlight system and the ambient temperature of the first side and the ambient temperature of the second side can be tested, and the third preset derating curve is determined based on the third target condition and the third change relationship.

[0117] Further, the first side of the headlight system is at a third target ambient temperature and the second side of the headlight system is at a fourth target ambient temperature, maintaining the rated operating parameters and the luminous flux of the headlight system reaching the third target luminous flux includes: the first side of the headlight system is at a third target ambient temperature and the second side of the headlight system is at a fourth target ambient temperature, maintaining the rated operating parameters and the luminous flux of the headlight system reaching the third target luminous flux and the temperature of the headlight system is less than the safety threshold.

[0118] Further, in this embodiment, when the entire headlight system is operating at the minimum operating parameters at the most adverse ambient temperature, the temperature of the headlight system being less than the safety threshold can further include that when the entire headlight system is operating at the minimum operating parameters at the most adverse ambient temperature, the temperature of the headlight system is less than the safety threshold and the difference between the temperature of the headlight system and the safety threshold is greater than the preset difference.

[0119] In this embodiment, when the operating conditions of the headlight system are not too harsh and the headlight system operates according to the actual lighting requirements during vehicle driving, the first preset derating curve and the second preset derating curve are tested based on the requirements of the overall lamp ambient temperature and luminous flux, ensuring that the tested derating curves can match the actual lighting requirements during vehicle driving. Considering the influence of the ambient wind during vehicle driving on the ambient temperature of the headlight, the accuracy of the first preset derating curve and the second preset derating curve is improved, ensuring that the derating of the headlight system is neither too large nor too small when operating under not-too-harsh conditions, and further improving the accuracy of the derating control of the headlight system. Additionally, when the operating conditions of the vehicle system are harsh and the low-beam light pattern with low light intensity requirements is in operation during vehicle idling, the third preset derating curve is tested based on the temperature and luminous flux requirements of the headlight system on different sides of the engine, which is conducive to accurately characterizing the derating requirements under harsh conditions and ensuring that the derating of the headlight system is neither too large nor too small when operating under harsh conditions, further improving the accuracy of the derating control of the headlight system.

[0120] Further, in this embodiment, the first state further includes the vehicle driving at a preset vehicle speed associated with the corresponding target lighting mode; the second state further includes the vehicle driving at a preset vehicle speed associated with the corresponding target lighting mode; wherein, different target lighting modes correspond to different preset vehicle speeds.

[0121] The preset vehicle speed can be specifically determined according to the road scene requirements of the corresponding target lighting mode.

[0122] Specifically, when the target lighting mode is one of the above-mentioned multiple low-beam lighting modes, the vehicle speeds corresponding to the C light pattern, V light pattern, and E light pattern are the first vehicle speed, the second vehicle speed, and the third vehicle speed in sequence, the first vehicle speed is greater than the second vehicle speed, and the first vehicle speed is less than the third vehicle speed.

[0123] Among them, there can be more than one preset vehicle speed associated with the target lighting mode. Based on this, the derating curves corresponding to different preset vehicle speeds can be tested to obtain more than one alternative derating curve corresponding to the target lighting mode, and the curve under the most severe condition in the target lighting mode is determined as the preset derating curve corresponding to the target lighting mode among the more than one alternative derating curves.

[0124] In this embodiment, considering the influence of the vehicle speed on the ambient temperature of the headlight system under different target lighting modes to test the preset derating curve is conducive to improving the accuracy of the formulated preset derating curve. When controlling the operation of the headlight system by selecting the corresponding preset derating curve according to the low-beam lighting mode, it further ensures that the luminous flux of the headlight system can be effectively used under different low-beam lighting modes, and the situation of performance surplus can be avoided under different low-beam lighting modes, ensuring the high-temperature resistance life of electronic devices.

[0125] Further, based on any of the above embodiments, another embodiment of the headlight system control method of the present application is proposed. In this embodiment, referring to Figure 4 , the preset derating curve includes a first curve segment (such as ab in Figure 4 ), a second curve segment connected to the first curve segment (such as bc in Figure 4 ), and a third curve segment connected to the second curve segment (such as cd in Figure 4 ). The first curve segment represents that the operating parameters of the headlight system remain unchanged at the rated operating parameters as the temperature of the environment where the headlight system is located increases. The second curve segment represents that the operating parameters of the headlight system show a downward trend and are less than the rated operating parameters as the temperature of the environment where the headlight system is located increases. The third curve segment represents that the operating parameters of the headlight system remain unchanged at the minimum operating parameters as the temperature of the environment where the headlight system is located increases, and the minimum operating parameters are less than the rated operating parameters.

[0126] In this embodiment, the rated operating parameter is the rated current, and the minimum operating parameter is the minimum operating current. In other embodiments, the rated operating parameter can also be the rated voltage or rated power, etc., and the minimum operating parameter can also be the minimum operating voltage or minimum operating power, etc.

[0127] Among them, the first curve segment, the second curve segment, and the third curve segment corresponding to different preset derating curves are different.

[0128] In this embodiment, in addition to the derating starting point formed by the connection of the first curve segment and the second curve segment, the preset derating curve also has a derating cut-off point formed by the connection of the second curve segment and the third curve segment, which is beneficial to ensuring that the luminous flux will not be too low while the headlight system operates within a safe temperature range, and further improving the accuracy of the derating control of the headlight system.

[0129] Further, based on the above embodiments, another embodiment of the headlight system control method of the present application is proposed. In this embodiment, different preset derating curves correspond to different test states of the headlight system. Based on this, referring to Figure 5 , before step S10, it further includes:

[0130] Step S01, obtaining the initial derating curve that satisfies the corresponding target conditions measured by the headlight system in each of the test states; the initial derating curve includes the first curve segment, the initial curve segment corresponding to the second curve segment, and the third curve segment, and defining the temperature of the environment where the headlight system is located corresponding to the connection point between the initial curve segment and the third curve segment as the cut-off temperature;

[0131] When there are more than one preset derating curves including the above-mentioned first preset derating curve, second preset derating curve, and third preset derating curve, the test states corresponding thereto include the above-mentioned first state, second state, and third state, and the corresponding target conditions include the above-mentioned first target condition, second target condition, and third target condition in sequence.

[0132] The initial curve segment (such as Figure 4 the dotted line before bc in

[0133] is specifically a curve segment representing the linear variation of the operating parameters of the headlight system with the ambient temperature.

[0134] In this embodiment, the preset parameter adjustment value is the first adjustment ratio. Specifically, the first adjustment ratio is greater than 50% and less than 100%. For example, the more than one preset parameter adjustment values are 90%, 80%, and 70% respectively, and the more than one target operating parameters are 90%, 80%, and 70% of the rated operating parameter in sequence. In other embodiments, the preset parameter adjustment value can also be the first adjustment amplitude.

[0135] In this embodiment, the preset temperature adjustment value is the second adjustment ratio. Specifically, the second adjustment ratio is greater than 50% and less than 100%. For example, the more than one preset temperature adjustment values are 90%, 80%, and 70% respectively, then the more than one target ambient temperatures are 90%, 80%, and 70% of the cut-off temperature in sequence. In other embodiments, the preset temperature adjustment value can also be the second adjustment amplitude.

[0136] Step S03, obtain the ambient temperature value corresponding to each of the target operating parameters when the headlight system operates in each of the test states, and the operating parameter value of the headlight system corresponding to each of the cut-off temperatures;

[0137] The ambient temperature value and the operating parameter value can be obtained through simulation or actual measurement.

[0138] Step S04, adjust the corresponding initial curve segment according to the more than one target operating parameters and their corresponding ambient temperature values, and the more than one cut-off temperatures and their corresponding operating parameter values, to obtain more than one of the preset derating curves.

[0139] Specifically, each target operating parameter and its corresponding ambient temperature value can form a first control point, so there are more than one first control points. More than one cut-off temperature and its corresponding ambient temperature value can form a second control point, so there are more than one second control points. Based on more than one first control point and more than one second control point, a target curve segment passing through these multiple control points can be fitted (such as the solid line between bc in Figure 4 ). Replace the initial curve segment with the target curve segment to obtain the second curve segment in the corresponding preset derating curve. Based on this, a preset derating curve including the first curve segment, the second curve segment, and the third curve segment can be obtained.

[0140] In this embodiment, adjusting the initial curve segment in the initial derating curve through more than one first control point is beneficial to prevent the illuminance of the headlight system from suddenly decreasing at the initial stage of derating, avoid the user from significantly perceiving the darkening of the light pattern, reduce the visual impact on the driver, and improve the driving safety of the vehicle. Adjusting the initial curve segment in the initial derating curve through more than one second control point is beneficial to keep the working temperature of the headlight system within the safety threshold. Based on this, it can be ensured that the illuminance of the obtained preset derating curve meets the requirements while the headlight system can operate within the normal working temperature range.

[0141] In addition, an embodiment of the present invention also proposes a storage medium, on which a control program for the headlight system is stored. When the control program for the headlight system is executed by a processor, the relevant steps of any embodiment of the above headlight system control method are implemented.

[0142] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or system. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0143] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0144] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, vehicle, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0145] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A method for controlling a vehicle lamp system, characterized in that, The method for controlling the vehicle lamp system includes the following steps: Obtain the operating condition parameters of the vehicle lamp system, where the operating condition parameters include at least one of the following parameters: whether the lamp system has a cornering lighting requirement; whether the current time period of the vehicle operation is within a target time period, and the environmental parameters corresponding to the target time period are greater than the preset parameters; the target lighting mode required to be turned on according to the current driving state of the vehicle; Determine one of more than one preset derating curves as the target derating curve according to the operating condition parameters, where different operating condition parameters correspond to different target derating curves, and the preset derating curve is the characteristic curve of the operating current of the lamp system changing with the ambient temperature of its location; When it is detected that the ambient temperature is less than or equal to the derating start temperature in the target derating curve, control the lamp system to operate with rated operating parameters; When it is detected that the ambient temperature is greater than the derating start temperature and less than the derating cut-off temperature in the target derating curve, control the target operating parameters of the lamp system to decrease as the ambient temperature increases; When it is detected that the ambient temperature is greater than or equal to the derating cut-off temperature, control the target operating parameters of the lamp system to be maintained at the minimum operating parameters.

2. The control method of the vehicle lamp system according to claim 1, characterized in that, The operating condition parameters include at least one of the following parameters: Whether the lamp system has turned on the preset low beam lighting mode; The target lighting mode required to be turned on according to the current driving state of the vehicle.

3. The headlight system control method according to claim 2, characterized in that, The step of obtaining the operating condition parameters of the vehicle lamp system includes: Obtain the vehicle speed and the steering angle of the vehicle; determine whether the lamp system has a cornering lighting requirement according to the steering angle; And / or, obtain the first on-off state parameter of the low beam function of the lamp system and the second on-off state parameter of the adaptive headlight function; determine whether the lamp system has turned on the preset low beam lighting mode according to the first on-off state parameter and the second on-off state parameter; And / or, obtain the current time information of the vehicle operation and the ambient illuminance of the location where the vehicle is located, and determine whether the current time period of the vehicle operation is within the target time period according to the time information and the ambient illuminance, and the target time period is the daytime in summer; And / or, obtain the engine operating parameters, the transmission operating parameters and the motion characteristic parameters of the vehicle, and determine whether the vehicle is in an idle state and lasts for more than a preset duration according to the engine operating parameters, the transmission operating parameters and the motion characteristic parameters.

4. The method for controlling a vehicle lamp system according to claim 3, wherein, The step of determining one of more than one preset derating curves as the target derating curve according to the operating condition parameters includes: When the lamp system has a cornering lighting requirement, determine the curve corresponding to the target lighting mode in more than one first preset derating curves as the target derating curve; When the headlight system does not have the curve lighting requirement and the preset low beam lighting mode is not turned on, or when the headlight system does not have the curve lighting requirement, the preset low beam lighting mode is turned on and the current time period is not within the target time period, or when the headlight system does not have the curve lighting requirement, the preset low beam lighting mode is turned on, the current time period is within the target time period, the vehicle is not in the idle state and lasts for more than the preset duration, determine the curve corresponding to the target lighting mode among more than one second preset derating curves as the target derating curve; When the headlight system does not have the curve lighting requirement, the preset low beam lighting mode is turned on, the current time period is within the target time period, and the vehicle is in the idle state and lasts for more than the preset duration, determine the third preset derating curve as the target derating curve.

5. The method for controlling a vehicle lamp system according to claim 4, wherein The first preset derating curve is a derating curve tested under the first target condition in the first state. The first state includes curve lighting of the headlight system in the corresponding target lighting mode during the vehicle driving process. The first target condition includes that the luminous flux of the headlight system reaches the first target luminous flux when the headlight system operates at the rated operating parameters as a whole under the first target ambient temperature, and the temperature of the headlight system is less than the safety threshold when the headlight system operates at the minimum operating parameters as a whole under the most severe ambient temperature; The second preset derating curve is a derating curve determined under the second target condition in the second state. The second state includes no curve lighting of the headlight system in the corresponding target lighting mode during the vehicle driving process. The second target condition includes that the luminous flux of the headlight system reaches the second target luminous flux when the headlight system operates at the rated operating parameters as a whole under the second target ambient temperature, and the temperature of the headlight system is less than the safety threshold when the headlight system operates at the minimum operating parameters as a whole under the most severe ambient temperature; The third preset derating curve is a derating curve tested under the third target condition in the third state. The third state includes that when the vehicle is in the idle state, the headlight system has no curve lighting in the preset low beam lighting mode. The third target condition includes that the headlight system operates at the rated operating parameters with the first side of the headlight system at the third target ambient temperature and the second side of the headlight system at the fourth target ambient temperature, and the luminous flux of the headlight system reaches the third target luminous flux, and the temperature of the headlight system is less than the safety threshold when the headlight system operates at the minimum operating parameters as a whole under the most severe ambient temperature. The third target ambient temperature is lower than the fourth target ambient temperature. The first side is the side of the headlight system away from the vehicle engine, and the second side is the side of the headlight system close to the engine; The first target ambient temperature, the second target ambient temperature, the third target ambient temperature, and the fourth target ambient temperature are all less than the most severe ambient temperature.

6. The method for controlling a vehicle lamp system according to claim 5, wherein, The first state further includes the vehicle traveling at a preset vehicle speed associated with the corresponding target lighting mode; The second state further includes the vehicle traveling at a preset vehicle speed associated with the corresponding target lighting mode; Wherein, different target lighting modes correspond to different preset vehicle speeds.

7. The control method of the vehicle lamp system according to claim 4, wherein The headlight system is an adaptive headlight system, and the target lighting mode is one of multiple low beam lighting modes corresponding to the adaptive headlight system. Different low beam lighting modes correspond to different first preset derating curves and different second preset derating curves.

8. The headlight system control method according to any one of claims 1 to 7, characterized in that, The preset derating curve includes a first curve segment, a second curve segment connected to the first curve segment, and a third curve segment connected to the second curve segment. The first curve segment represents that as the temperature of the environment where the headlight system is located increases, the operating parameters of the headlight system remain unchanged at the rated operating parameters. The second curve segment represents that as the temperature of the environment where the headlight system is located increases, the operating parameters of the headlight system show a downward trend and are less than the rated operating parameters. The third curve segment represents that as the temperature of the environment where the headlight system is located increases, the operating parameters of the headlight system remain unchanged at the minimum operating parameters, and the minimum operating parameters are less than the rated operating parameters.

9. The control method of the vehicle lamp system according to claim 8, characterized in that, Different preset derating curves correspond to different test states of the headlight system. Before the step of obtaining the operating condition parameters of the headlight system of the vehicle, it further includes: Obtaining an initial derating curve that meets the corresponding target conditions measured by the headlight system in each test state. The initial derating curve includes the first curve segment, the initial curve segment corresponding to the second curve segment, and the third curve segment. Define the temperature of the environment where the headlight system is located corresponding to the connection point between the initial curve segment and the third curve segment as the cut-off temperature; Reducing the rated operating parameters according to more than one preset parameter adjustment value to obtain more than one target operating parameter, and reducing the cut-off temperature according to the more than one preset temperature adjustment value to obtain more than one target ambient temperature; Obtaining the ambient temperature value corresponding to each target operating parameter of the headlight system in each test state and the operating parameter value of the headlight system corresponding to each cut-off temperature; Adjusting the corresponding initial curve segment according to the more than one target operating parameter and its corresponding ambient temperature value, and the more than one cut-off temperature and its corresponding operating parameter value to obtain more than one preset derating curve.

10. A vehicle, characterized in that, The vehicle includes: A headlight system; A control device. The headlight system is connected to the control device. The control device includes: a memory, a processor, and a headlight system control program stored on the memory and executable on the processor. When the headlight system control program is executed by the processor, it implements the steps of the headlight system control method according to any one of claims 1 to 9.

11. A storage medium, characterized in that, The storage medium stores a headlight system control program, and when the headlight system control program is executed by a processor, the steps of the headlight system control method according to any one of claims 1 to 9 are implemented.

Images