Vehicle lamp control circuit, method and device and vehicle

Abstract

The embodiment of the invention provides a vehicle lamp control circuit, method and device and a vehicle. The control circuit comprises a control module, a constant current module and a plurality of lamp control circuits, wherein the constant current module and the lamp control circuits are connected with the control module. Different current output ports of the constant current module are respectively connected with current input ends of different lamp control circuits, and different control ports of the control module are respectively connected with control signal input ends of different lamp control circuits; the plurality of lamp control circuits are used for controlling different lamp load groups, and the lamp load groups comprise at least one first load group consisting of lamps in an independent relationship and at least one second load group consisting of lamps in a dependency relationship or lamps in a mutual exclusion relationship. The control circuit is used for achieving the effects that the control cost of the automobile lamp is reduced, and meanwhile the constant-current channel is fully utilized.

Description

Technical Field

[0001] This application relates to the field of vehicle control, and particularly to a control circuit, method, device and vehicle for vehicle lamps. Background Art

[0002] Currently, the competition in the automotive industry is becoming increasingly fierce. Not only are the configurations becoming richer, but cost competition is also of primary importance. Consumers' pursuit of cost performance is also getting higher and higher. Vehicle lamps are a necessary configuration for each vehicle, and the types of lamps included in vehicle lamps are also increasing.

[0003] In the prior art, in the lamp control module, a constant current channel is often used to drive one lamp or multiple constant current channels are used to drive one lamp to control the vehicle lamp.

[0004] However, more constant current channels correspond to more driving chips. And during the actual use of the vehicle, not all lamps are lit at the same time. Instead, only a small part of the lamps are lit most of the time, and the constant current channels corresponding to the remaining unlit lamps will be idle. Therefore, the method in the prior art not only has a high cost for lamp control, but also has the problem of waste of constant current channel resources. Summary of the Invention

[0005] The embodiments of this application provide a control circuit, method, device and vehicle for vehicle lamps, so as to achieve the effect of fully utilizing the constant current channels while reducing the control cost of vehicle lamps.

[0006] In a first aspect, the embodiments of this application provide a control circuit for vehicle lamps, including:

[0007] A control module, a constant current module respectively connected to the control module, and a plurality of lamp control circuits;

[0008] Different current output ports of the constant current module are respectively connected to current input ends of different lamp control circuits, and different control ports of the control module are respectively connected to control signal input ends of different lamp control circuits;

[0009] The plurality of lamp control circuits are used to control different lamp load groups. The lamp load groups include at least one first load group composed of lamps with independent relationships, and at least one second load group composed of lamps with dependent relationships or mutually exclusive relationships.

[0010] In a possible implementation manner, the control module is used to determine a control signal, the output port and magnitude of the current, and the control port for outputting the control signal according to the received light control signal;

[0011] The control module is further configured to send the output port and the current magnitude to the constant current module, and output the control signal to the corresponding target lamp control circuit through the control port;

[0012] The constant current module is configured to output a current corresponding to the current magnitude to the current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls the corresponding lamp load group.

[0013] In a possible implementation manner, the control circuit further includes a boost module respectively connected to the constant current module and the control module;

[0014] The control circuit is further configured to determine the magnitude of the output voltage according to the light control signal, and send the magnitude of the output voltage to the boost module;

[0015] The boost module is configured to boost the input voltage according to the magnitude of the output voltage, and input the processed target voltage into the constant current module, so that the constant current module outputs a current corresponding to the current magnitude.

[0016] In a possible implementation manner, the control circuit further includes: a power filter module and an SBC power module;

[0017] The power filter module is respectively connected to the boost module and the SBC power module, and is configured to filter the spikes in the vehicle power supply, and input the filtered voltage into the boost module and the SBC power module respectively;

[0018] The SBC power module is also respectively connected to the constant current module and the control module, and the SBC power module is configured to convert the received voltage and input the converted voltage into the constant current module and the control module.

[0019] In a possible implementation manner, the control circuit further includes a plurality of lamp load groups;

[0020] The output ends of the plurality of lamp control circuits are respectively connected to the input ends of different lamp load groups.

[0021] In a possible implementation manner, one of the plurality of lamp load groups, a second load group, includes a low beam lamp and a position lamp with a dependency relationship;

[0022] The lamp control circuit connected to the second load group includes: a MOS transistor and a diode;

[0023] Wherein, the gate of the MOS transistor is connected to the low beam control port of the control module, the source is connected to the low beam, the drain is connected to the position light, and the source of the MOS transistor is connected to the positive electrode of the diode, and the drain of the MOS transistor is connected to the negative electrode of the diode;

[0024] The current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position light.

[0025] In a possible implementation manner, one of the second load groups in the plurality of lamp load groups includes a high beam, a low beam, and a position light that have a dependency relationship;

[0026] The lamp control circuit connected to the second load group includes: a first MOS transistor, a second MOS transistor, a first diode, and a second diode;

[0027] Wherein, the gate of the first MOS transistor is connected to the high beam control port of the control module, the source is connected to the high beam, the drain is connected to the low beam, and the source of the first MOS transistor is connected to the positive electrode of the first diode, and the drain of the first MOS transistor is connected to the negative electrode of the first diode;

[0028] The gate of the second MOS transistor is connected to the low beam control port of the control module, the source is connected to the low beam, the drain is connected to the position light, and the source of the second MOS transistor is connected to the positive electrode of the second diode, and the drain of the second MOS transistor is connected to the negative electrode of the second diode;

[0029] The current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position light.

[0030] In a possible implementation manner, one of the second load groups in the plurality of lamp load groups includes a position light and a turn signal light that have a mutually exclusive relationship;

[0031] The lamp control circuit connected to the second load group includes: a MOS transistor, a diode, a first resistor, and a second resistor;

[0032] Wherein, the gate of the MOS transistor is connected to the turn signal control port of the control module, the source is connected to the turn signal light, the drain is connected to the position light through the first resistor, and the source of the MOS transistor is connected to the positive electrode of the diode through the second resistor, and the drain of the MOS transistor is connected to the negative electrode of the diode through the first resistor;

[0033] The current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position light through the first resistor.

[0034] In a possible implementation, one of the multiple lamp load groups, i.e., the second load group, includes a position lamp and a daytime running lamp that are mutually exclusive;

[0035] The lamp control circuit connected to the second load group includes: an MOS transistor, a diode, a first resistor, and a second resistor;

[0036] Among them, the gate of the MOS transistor is connected to the daytime running lamp control port of the control module, the source is connected to the daytime running lamp, the drain is connected to the position lamp through the first resistor, and the source of the MOS transistor is connected to the positive electrode of the diode through the second resistor, and the drain of the MOS transistor is connected to the negative electrode of the diode through the first resistor;

[0037] The current output port of the constant current module corresponding to the lamp control circuit connected to the second load group is connected to the position lamp through the first resistor.

[0038] In a possible implementation, the first load group among the multiple lamp load groups includes at least two lamps with an independent relationship;

[0039] The lamp control circuit connected to the first load group includes: the same number of MOS transistors and diodes as the number of lamps in the first load group;

[0040] Among them, the source of each MOS transistor is connected to a different lamp, the gate is connected to the control port of the control module corresponding to the lamp, and the drain is connected to the current output port of the constant current module corresponding to the lamp control circuit connected to the first load group;

[0041] A diode is connected between the source and the drain of each MOS transistor, and the source of the MOS transistor is connected to the positive electrode of the diode, and the drain of the MOS transistor is connected to the negative electrode of the diode.

[0042] In a second aspect, an embodiment of the present application provides a method for controlling a vehicle lamp, which is applied to the control module of the vehicle lamp control circuit described in the first aspect, and includes:

[0043] Receiving a lighting control signal sent by the vehicle's vehicle controller;

[0044] Determining a control signal, the current output port and the current magnitude, and the control port for outputting the control signal according to the lighting control signal;

[0045] Send the output port and the current magnitude to the constant current module, and output the control signal through the control port to the corresponding target lamp control circuit, so that the constant current module outputs a current corresponding to the current magnitude to the current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls the corresponding lamp load group.

[0046] In a third aspect, an embodiment of the present application provides a control device for a vehicle lamp, including:

[0047] A receiving unit, configured to receive a lighting control signal sent by a vehicle's vehicle controller;

[0048] A determining unit, configured to determine a control signal, an output port of the current and the current magnitude, and a control port for outputting the control signal according to the lighting control signal;

[0049] A control unit, configured to send the output port and the current magnitude to the constant current module, and output the control signal through the control port to the corresponding target lamp control circuit, so that the constant current module outputs a current corresponding to the current magnitude to the current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls the corresponding lamp load group.

[0050] In a fourth aspect, an embodiment of the present application provides a control module, including: a memory, a processor;

[0051] The memory stores computer-executable instructions;

[0052] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the vehicle lamp control method described in the second aspect above.

[0053] In a fifth aspect, an embodiment of the present application provides a vehicle, including: a vehicle body and the vehicle lamp control circuit described in the first aspect.

[0054] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the vehicle lamp control method described in the second aspect above.

[0055] In a seventh aspect, an embodiment of the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the vehicle lamp control method described in the second aspect above.

[0056] The control circuit, method, device and vehicle for vehicle lamps provided by the embodiments of the present application are provided with a control circuit including a control module, a constant current module and a plurality of lamp control circuits respectively connected to the control module. Among them, different current output ports of the constant current module are respectively connected to the current input ends of different lamp control circuits, and different control ports of the control module are respectively connected to the control signal input ends of different lamp control circuits; the plurality of lamp control circuits are used to control different lamp load groups, and the lamp load groups include at least one first load group composed of lamps with independent relationships and at least one second load group composed of lamps with dependent relationships or mutually exclusive relationships. The solution provided by the present application realizes driving multiple lamps in a lamp load group with a certain logical relationship by one constant current channel, which not only reduces the number of constant current channels and the number of driving chips used, but also reduces the control cost of vehicle lamps; at the same time, it also makes full use of the constant current channels, effectively avoiding the problem of waste of constant current channel resources caused by the long-term idle state of the constant current channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0058] Figure 1 It is a schematic structural diagram of the control circuit of the vehicle lamp provided in the first embodiment of the present application;

[0059] Figure 2 It is a schematic structural diagram of the control circuit of the vehicle lamp provided in the second embodiment of the present application;

[0060] Figure 3 It is a schematic structural diagram of the control circuit of the vehicle lamp provided in the third embodiment of the present application;

[0061] Figure 4 It is a schematic structural diagram of the control circuit of the vehicle lamp provided in the fourth embodiment of the present application;

[0062] Figure 5 It is a schematic structural diagram of the control circuit of the vehicle lamp provided in the fifth embodiment of the present application;

[0063] Figure 6 It is a schematic structural diagram of the control circuit of the vehicle lamp provided in the sixth embodiment of the present application;

[0064] Figure 7 It is a schematic flowchart of the control method of the vehicle lamp provided in the seventh embodiment of the present application;

[0065] Figure 8 It is a schematic structural diagram of the control device of the vehicle lamp provided in the eighth embodiment of the present application;

[0066] Figure 9 This is a schematic structural diagram of the control module provided in Embodiment 9 of the present application.

[0067] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be provided hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0068] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0069] Based on the above background art, when the inventor was researching the control method of vehicle lamps, it was found that there are logical relationships among some lamps in the vehicle. For example, when the low beam is lit, the position lamp needs to be lit synchronously, that is, there is a dependency relationship between the low beam and the position lamp; for another example, when the position lamp is lit, the daytime running lamp must be in the off state, and when the daytime running lamp is lit, the position lamp must be in the off state, that is, there is a mutually exclusive relationship between the position lamp and the daytime running lamp; in addition, some lamps are independent of each other, and these lamps are in an independent relationship. Therefore, the lamps can be divided into different lamp load groups according to the logical relationships, and corresponding lamp control circuits can be designed for each lamp load group, so that a constant current channel can drive multiple lamps in a lamp load group, thereby reducing the number of driving chips used, reducing the control cost of the vehicle lamps, and making full use of the constant current channel, effectively avoiding the waste of the resources of the constant current channel.

[0070] Based on the above technical concept of the inventor, the present application provides a control circuit for vehicle lamps, including: a control module, a constant current module respectively connected to the control module, and a plurality of lamp control circuits; wherein, different current output ports of the constant current module are respectively connected to the current input ends of different lamp control circuits; different control ports of the control module are respectively connected to the control signal input ends of different lamp control circuits; the plurality of lamp control circuits are used to control different lamp load groups, and the lamp load groups include at least one first load group composed of lamps with an independent relationship, and at least one second load group composed of lamps with a dependency relationship or a mutually exclusive relationship. This control circuit is used to achieve the effect of reducing the control cost of vehicle lamps while making full use of the constant current channel, and effectively solves the problems of high cost of lamp control and waste of the resources of the constant current channel existing in the prior art.

[0071] The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0072] Figure 1 It is a schematic structural diagram of a control circuit for a vehicle lamp provided in the first embodiment of the present application. As Figure 1 shown, the control circuit 10 of the vehicle lamp provided in this embodiment includes: a control module 101, a constant current module 102, and a plurality of lamp control circuits (a control circuit including four lamp control circuits is schematically shown in this figure).

[0073] The control module 101 is respectively connected to the constant current control module 102 and a plurality of lamp control circuits (the plurality of lamp control circuits include a lamp control circuit 1031, a lamp control circuit 1032, a lamp control circuit 1033, and a lamp control circuit 1034); different current output ports of the constant current module 102 are respectively connected to the current input ends of different lamp control circuits; different control ports of the control module 101 are respectively connected to the control signal input ends of different lamp control circuits;

[0074] Among them, the plurality of lamp control circuits are used to control different lamp load groups. The lamp load group includes at least one first load group composed of lamps with independent relationships, and at least one second load group composed of lamps with dependent relationships or lamps with mutually exclusive relationships.

[0075] In a specific implementation manner, the constant current module 102 can adopt a constant current module based on a buck circuit, that is, a buck constant current module.

[0076] In a specific implementation manner, the control module 101 can be a microcontroller unit (Microcontroller Unit, MUC) on a vehicle.

[0077] It should be understood that in this solution, different lamp load groups correspond to different lamp control circuits. Correspondingly, each lamp control circuit is used to control its corresponding lamp load group. In addition, the current input end of each lamp load group is connected to the current output end of its corresponding constant current module; the control signal input end of each lamp load group is connected to the control port of its corresponding control module. Among them, one current output end of the constant current module is equivalent to a constant current channel. Based on this, each lamp control circuit can control multiple lamps in its corresponding lamp load group according to the current input at its current input end and the control signal input at its control signal end, that is, it realizes the control of multiple lamps by one constant current channel, reduces the number of constant current channels in the vehicle, and further reduces the number of driving chips required, thus reducing the control cost of vehicle lamps.

[0078] In addition, it should be understood that in this solution, the lamp load group is obtained by logically dividing the lamps in the vehicle. Grouping the lamps based on their logical relationships can greatly improve the utilization rate of the constant current module, fully utilize the constant current channels, and effectively avoid the waste of constant current channel resources caused by the long-term idle state of the constant current module. Specifically, the lamps in the vehicle can be divided into at least one first load group composed of lamps with independent relationships and at least one second load group composed of lamps with dependent relationships or mutually exclusive relationships according to the dependency relationship, mutual exclusion relationship, and independent relationship.

[0079] Among them, in the first load group composed of lamps with independent relationships, the lighting and extinguishing of the lamps are independent of each other. In the second load group composed of lamps with dependent relationships, when a certain lamp is lit / extinguished, at least one other lamp in the load group also needs to be lit / extinguished synchronously; in the second load group composed of lamps with mutually exclusive relationships, when a certain lamp is lit / extinguished, at least one other lamp in the load group must be in the extinguished / lit state.

[0080] Exemplarily, in practical applications, since the position lamp needs to be lit synchronously when the low beam is lit, that is, there is a dependency relationship between the low beam and the position lamp, the low beam and the position lamp can be divided into a lamp load group as a second load group in the control circuit;

[0081] When the high beam is lit, the low beam also needs to be lit synchronously, that is, there is a dependency relationship among the high beam, the low beam, and the position lamp. Therefore, the high beam, the low beam, and the position lamp can be divided into a lamp load group as a second load group in the control circuit;

[0082] When the position lamp is lit, the DRL must be in the off state. When the DRL is lit, the position lamp must be in the off state. That is, there is a mutually exclusive relationship between the position lamp and the DRL. Therefore, the position lamp and the DRL can be classified into a lamp load group, serving as a second load group in the control circuit.

[0083] Since when the turn signal and the position lamp share a light-emitting surface and the turn signal is lit, the position lamp on the shared light-emitting surface needs to be turned off. Therefore, there is a mutually exclusive relationship between the turn signal and the position lamp. Thus, the position lamp and the turn signal can be classified into a lamp load group, serving as a second load group in the control circuit.

[0084] It should be noted that in a vehicle, each lamp can only exist in one lamp load group.

[0085] The control circuit 10 of the vehicle lamp provided in this embodiment includes a control module, a constant current module, and multiple lamp control circuits respectively connected to the control module. Among them, different current output ports of the constant current module are respectively connected to the current input ends of different lamp control circuits, and different control ports of the control module are respectively connected to the control signal input ends of different lamp control circuits. The multiple lamp control circuits are used to control different lamp load groups. The lamp load group includes at least one first load group composed of lamps with an independent relationship, and at least one second load group composed of lamps with a dependent relationship or lamps with a mutually exclusive relationship. This control circuit realizes driving multiple lamps in a lamp load group with a certain logical relationship by one constant current channel, which not only reduces the number of constant current channels and the number of driving chips used, thereby reducing the control cost of the vehicle lamp, but also makes full use of the constant current channels, effectively avoiding the problem of waste of constant current channel resources caused by the long-term idle state of the constant current channels.

[0086] Figure 2 This is a schematic structural diagram of the control circuit of the vehicle lamp provided in the second embodiment of the present application. As Figure 2 shown, on the basis of the first embodiment, the control circuit 10 of the vehicle lamp provided in this embodiment further includes: a boost module 104, a power filter module 105, a single board computer (SBC) power module 106, and multiple lamp load groups (the multiple lamp load groups include lamp load group 1071, lamp load group 1072, lamp load group 1073, lamp load group 1074).

[0087] The boost module 104 is respectively connected to the constant current module 102 and the control module 101; the power filter module 105 is respectively connected to the boost module 104 and the SBC power module 106; the SBC power module 106 is also respectively connected to the constant current module 102 and the control module 101; the output ends of multiple lamp control circuits are respectively connected to the input ends of different lamp load groups (specifically, the output end of the lamp control circuit 1031 is connected to the input end of the lamp load group 1071; the output end of the lamp control circuit 1032 is connected to the input end of the lamp load group 1072; the output end of the lamp control circuit 1033 is connected to the input end of the lamp load group 1073; the output end of the lamp control circuit 1034 is connected to the input end of the lamp load group 1074).

[0088] Among them, the control module 101 is used to determine a control signal, the output port and magnitude of the current, and the control port for outputting the control signal according to the received lighting control signal.

[0089] It should be understood that in response to the user's control operation on the vehicle lamp, the control module receives the lighting control signal sent by the vehicle's vehicle controller, and this lighting control signal is used to indicate the control operation on at least one target lamp. Among them, the control operation of the vehicle lamp includes the lighting operation or extinguishing operation corresponding to each target lamp. Further, the control module can determine at least one target lamp to be controlled and the control operation for each target lamp according to the received lighting control signal; according to the control operation for each target lamp, the control signal that the control module should output can be determined, and this control signal is used to control the conduction and disconnection of the circuit where the target lamp is located; based on the normal operating current of at least one target lamp that needs to be lit in the target load lamp group, the magnitude of the current required by the constant current module is determined. In addition, according to the at least one target lamp, the target lamp load group where the at least one target lamp is located can be determined, and then the target lamp control circuit corresponding to the target lamp load group can be determined, and the output port and control port of the constant current module corresponding to the connection with the target lamp control circuit are respectively determined as the output port of the current and the output port of the control signal.

[0090] Among them, the control module 101 is also used to send the output port and the magnitude of the current to the constant current module 102, and output the control signal through the control port to the corresponding target lamp control circuit;

[0091] The constant current module 102 is used to output the current corresponding to the magnitude of the current to the current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls the corresponding lamp load group;

[0092] It should be understood that after the control module determines the output port and current magnitude of the constant current module's output current, it sends the output port and current magnitude to the constant current module in a communication connection manner. Correspondingly, the constant current module will output the current corresponding to the current magnitude from this output port to the current input terminal of the target lamp control circuit; at the same time, after the control module determines the control signal it should output and the control terminal for outputting this control signal, it will output this control signal from this control port to the control signal input terminal of the target lamp control circuit, so that the target control circuit controls the corresponding lamp load group based on the received control signal and current.

[0093] Among them, the control circuit 101 is further configured to determine the output voltage magnitude according to the lighting control signal, and send the output voltage magnitude to the boost module 104;

[0094] The boost module 104 is configured to boost the input voltage according to the output voltage magnitude, and input the processed target voltage into the constant current module 102, so that the constant current module 102 outputs the current corresponding to this current magnitude.

[0095] It should be understood that the constant current module needs to be based on a certain voltage to output the current corresponding to this current magnitude. Therefore, the control circuit also includes a boost module. Specifically, the control circuit will also determine the voltage magnitude that the boost module should output based on the lighting control signal, and send the output voltage magnitude to the voltage module in a communication connection manner. Correspondingly, the voltage module will boost the input voltage of the boost module according to the received output voltage magnitude, and input the processed target voltage into the constant current module, so that the constant current module outputs the current corresponding to this current magnitude based on this target voltage.

[0096] In a specific implementation manner, the boost module 104 can be a boost module based on a boost circuit, that is, a boost boost module.

[0097] In a specific implementation manner, the communication connection manners between the control module 101 and the constant current module 102, and between the control module 101 and the boost module 104 can be Serial Peripheral Interface (SPI) communication.

[0098] Among them, the power supply filtering module 105 is used to filter the spikes and burrs in the vehicle power supply, and input the filtered voltage into the boost module 104 and the SBC power supply module 106 respectively;

[0099] The SBC power supply module 106 is used to convert the received voltage, and input the converted voltage into the constant current module 102 and the control module 101.

[0100] It should be understood that in order to obtain the working voltages required by the control module and the constant current module, the control circuit of the vehicle lamp further includes an SBC power module, which can convert the received high voltage into lower working voltages for the control module and the constant current module (generally, the working voltages of the control module and the constant current module are 5V).

[0101] In addition, since the vehicle power supply system is vulnerable to factors such as engine starting and load switching, resulting in peak spikes (such as instantaneous high voltages and surges in voltage), and these input voltages with peak spikes can cause damage or abnormal functions of the modules, making it difficult to ensure the stable operation of the modules. Therefore, the control circuit of the vehicle lamp may also include a power filter module to eliminate the peak spikes in the voltage from the vehicle power supply system, ensuring that the boost module and the power module can receive stable working voltages (generally, the working voltages of the boost module and the SBC module are 12V).

[0102] The control circuit of the vehicle lamp provided in this embodiment, based on the connections between the control signal, the constant current module, the lamp control circuit, and the lamp load group, determines the control signal, the output port and magnitude of the current, and the control port for outputting the control signal in the control module, enabling the constant current module in the control circuit to output different current values, meeting the requirement of one constant current channel adapting to drive multiple lamps, and realizing the control of one constant current channel over multiple target lamps; in addition, based on the connection between the boost module and the constant current module and the control module, and the magnitude of the output voltage determined by the control module, the boost module can output the voltage required by the constant current module to the constant current module, so that the constant current module outputs a current corresponding to this current magnitude; furthermore, based on the connection relationships among the power filter module, the SBC power module, the boost module, the constant current module, and the control module, the current filter module and the SBC power module can output stable working voltages for other working modules to ensure the stable operation of the entire control circuit of the vehicle lamp.

[0103] Figure 3 This is a schematic structural diagram of the control circuit of the vehicle lamp provided in Embodiment 3 of the present application. As Figure 3 shown, taking the control module as the MCU and the communication connection method as SPI communication as an example, on the basis of Embodiment 1 and Embodiment 2, this embodiment provides a connection method for one of the second load groups in the above-mentioned multiple lamp load groups, where the second load group includes a low beam lamp and a position lamp with a dependency relationship.

[0104] Specifically, the lamp control circuit to which the second load group is connected includes: a MOS transistor (i.e., Figure 3 Q1 in

[0105] Among them, the gate of the MOS transistor is connected to the low beam control port of the control module, the source is connected to the low beam, the drain is connected to the position light, the source of the MOS transistor is connected to the positive pole of the diode, and the drain of the MOS transistor is connected to the negative pole of the diode; the current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position light.

[0106] It should be noted that in practical applications, for the low beam and the position light, when the position light is lit, it is not necessary to synchronously light the low beam; while when the low beam is lit, it is necessary to synchronously light the position light.

[0107] In the practical application of this control circuit, the specific control process may include the following:

[0108] When the lighting control signal is to light the position light, the MCU sends the current magnitude and the output port that the constant current module should output to the constant current module through SPI communication. Among them, the current magnitude is the magnitude of the current required to light the position light, and the output port is the current output port corresponding to the lamp control circuit connected to the above-mentioned second load group in the constant current module; at the same time, the MCU determines the control signal and the control port that it should output. Among them, the control port is the low beam control port, and the control signal output by the low beam control port is a low level. Based on this, the MOS transistor Q1 is in the cut-off state, and there is no current in the low beam, so that the position light is lit and the low beam is in the off state.

[0109] When the lighting control signal is to light the position light and the low beam, the MCU sends the current magnitude and the output port that the constant current module should output to the constant current module through SPI communication. Among them, the current magnitude is the sum of the magnitude of the current required to light the position light and the magnitude of the current required to light the low beam, and the output port is the current output port corresponding to the lamp control circuit connected to the above-mentioned second load group in the constant current module; at the same time, the MCU determines the control signal and the control port that it should output. Among them, the control port is the low beam control port, and the control signal output by the low beam control port is a low level. Based on this, the MOS transistor Q1 is in the conducting state, so that the position light and the low beam are lit simultaneously.

[0110] It should be understood that the above-mentioned position light and low beam can also be replaced by two other lamps in the vehicle with this logical relationship, and this application does not limit this.

[0111] The control circuit of the vehicle lamp provided in this embodiment only designs a dedicated control circuit for the first load group composed of lamps with a dependency relationship by adding MOS transistors, realizes the control of multiple lamps with a dependency relationship by one constant current channel, achieves the effect of reducing the number of constant current channels on the premise of minimizing electronic devices, and ensures the economy of the implementation of this solution.

[0112] Figure 4 This is a schematic diagram of the control circuit of the vehicle lamp provided in the fourth embodiment of the present application. As Figure 4 shown, taking the control module as the MCU and the communication connection method as SPI communication as an example, on the basis of the first and second embodiments, this embodiment provides a connection method for one of the above-mentioned multiple lamp load groups, where the second load group includes a high beam lamp, a low beam lamp, and a position lamp that have a dependency relationship.

[0113] Specifically, the lamp control circuit connected to the second load group includes: a first MOS transistor (i.e., Figure 4 Q2 in Figure 4 ), a second MOS transistor (i.e.,

[0114] Q1 in

[0115] ), a first diode, and a second diode;

[0116] Among them, the gate of the first MOS transistor is connected to the high beam lamp control port of the control module, the source is connected to the high beam lamp, the drain is connected to the low beam lamp, and the source of the first MOS transistor is connected to the positive electrode of the first diode, and the drain of the first MOS transistor is connected to the negative electrode of the first diode; the gate of the second MOS transistor is connected to the low beam lamp control port of the control module, the source is connected to the low beam lamp, the drain is connected to the position lamp, and the source of the second MOS transistor is connected to the positive electrode of the second diode, and the drain of the second MOS transistor is connected to the negative electrode of the second diode; the current output port of the constant current module corresponding to the lamp control circuit connected to the second load group is connected to the position lamp.

[0117] It should be noted that in practical applications, for the high beam lamp, the low beam lamp, and the position lamp, it is not necessary to synchronously light the low beam lamp and the high beam lamp when lighting the position lamp; when lighting the low beam lamp, it is necessary to synchronously light the position lamp; when lighting the high beam lamp, it is necessary to synchronously light the low beam lamp, and then synchronously light the position lamp.

[0118] When the lighting control signal is to turn on the position lights and low beam lights, the MCU sends the magnitude of the current that the constant current module should output and the output port to the constant current module through SPI communication. Among them, the magnitude of the current is the sum of the magnitude of the current required to turn on the position lights and the magnitude of the current required to turn on the low beam lights, and the output port is the current output port corresponding to the lamp control circuit connected to the second load group in the constant current module. At the same time, the MCU determines the control signal and the control port that it should output. Among them, the control port is the low beam control port and the high beam control port, and the control signal output by the low beam control port is high level, and the control signal output by the high beam control port is low level. Based on this, the MOS transistor Q1 is turned on, the MOS transistor Q2 is turned off, and the current output by the constant current module flows through the position lights and the low beam lights, so that the position lights and the low beam lights are turned on, and the high beam lights are in the off state.

[0119] When the lighting control signal is to turn on the position lights, low beam lights and high beam lights, the MCU sends the magnitude of the current that the constant current module should output and the output port to the constant current module through SPI communication. Among them, the magnitude of the current is the sum of the magnitude of the current required to turn on the position lights, the magnitude of the current required to turn on the low beam lights and the magnitude of the current required to turn on the high beam lights, and the output port is the current output port corresponding to the lamp control circuit connected to the second load group in the constant current module. At the same time, the MCU determines the control signal and the control port that it should output. Among them, the control port is the low beam control port and the high beam control port, and the control signals output by both the low beam control port and the high beam control port are high level. Based on this, both the MOS transistor Q1 and the MOS transistor Q2 are turned on, and the current output by the constant current module flows through the position lights and flows to the low beam lights and the high beam lights through the MOS transistor Q1 and the MOS transistor Q2 respectively, so that the position lights, low beam lights and high beam lights are turned on simultaneously.

[0120] It should be understood that the above-mentioned position lights, low beam lights and high beam lights can also be replaced by multiple lamps in the vehicle with such a logical relationship, and this application does not limit this.

[0121] The control circuit of the vehicle lamp provided in this embodiment has a technical effect similar to that of the control circuit of the vehicle lamp provided in Embodiment 3, and will not be elaborated here.

[0122] Figure 5 For the structural schematic diagram of the control circuit of the vehicle lamp provided in Embodiment 5 of the present application, as Figure 5 shown, taking the control module as the MCU and the communication connection method as SPI communication as an example, on the basis of Embodiment 1 and Embodiment 2, this embodiment provides a connection method for one of the second load groups in the above-mentioned multiple lamp load groups, where the second load group includes position lights and turn signals that are mutually exclusive.

[0123] Specifically, the lamp control circuit connected to the second load group includes: an MOS transistor (i.e., Q1 in Figure 5 ), a diode, a first resistor, and a second resistor;

[0124] Among them, the gate of the MOS transistor is connected to the turn signal control port of the control module, the source is connected to the turn signal, the drain is connected to the position lamp through the first resistor, and the source of the MOS transistor is connected to the positive electrode of the diode through the second resistor, and the drain of the MOS transistor is connected to the negative electrode of the diode through the first resistor; the current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position lamp through the first resistor.

[0125] It should be noted that in actual applications, if the turn signal and the position lamp in the vehicle share a light-emitting surface, then for the position lamp and the turn signal, when the turn signal is lit, the position lamp on the shared light-emitting surface needs to be in the off state; when the position lamp is lit, the turn signal on the shared light-emitting surface needs to be in the off state.

[0126] In the actual application of this control circuit, the specific control process may include the following:

[0127] When the light control signal is to turn on the position lamp, the MCU sends the magnitude of the current that the constant current module should output and the output port to the constant current module through SPI communication. Among them, the magnitude of the current is the magnitude of the current required to turn on the position lamp, and the output port is the current output port corresponding to the lamp control circuit connected to the above-mentioned second load group in the constant current module; at the same time, the MCU determines the control signal and the control port that it should output. Among them, the control port is the turn signal control port, and the control signal of the turn signal control port is a low level. Based on this, the MOS transistor Q1 is in the cut-off state, and all the current output by the constant current module flows through the resistor R1 to the position lamp, so that the position lamp is turned on and the turn signal is in the off state.

[0128] When the light control signal is to turn on the turn signal, the MCU sends the magnitude of the current that the constant current module should output and the output port to the constant current module through SPI communication. Among them, the magnitude of the current is the magnitude of the current required to turn on the turn signal, and the output port is the current output port corresponding to the lamp control circuit connected to the above-mentioned second load group in the constant current module; at the same time, the MCU determines the control signal and the control port that it should output. Among them, the control port is the turn signal control port, and the control signal of the turn signal control port is a high level. Based on this, the MOS transistor Q1 is in the conducting state, causing the resistor R1 to be short-circuited, and all the current output by the constant current module flows through the turn signal, so that the turn signal is turned on and the position lamp is in the off state.

[0129] It should be understood that in practical applications, since there is also a mutually exclusive relationship between the position lamp and the daytime running lamp, the turn signal in the above solution of this embodiment can be correspondingly replaced by the daytime running lamp, and its specific implementation manner is similar to the above solution, which will not be elaborated here. Similarly, the above position lamp and turn signal can also be replaced by two other lamps in the vehicle that have such a logical relationship, and the present application does not limit this.

[0130] The control circuit of the vehicle lamp provided in this embodiment only designs a dedicated control circuit for the first load group composed of lamps with a mutually exclusive relationship by adding MOS transistors, realizes the control of multiple lamps with a mutually exclusive relationship by one constant current channel, achieves the effect of reducing the number of constant current channels while minimizing electronic components, and ensures the economy of the implementation of this solution.

[0131] Figure 6 FIG. is a schematic structural diagram of the control circuit of the vehicle lamp provided in Embodiment 6 of the present application. As Figure 6 shown, taking the control module as the MCU and the communication connection method as SPI communication as an example, on the basis of Embodiment 1 and Embodiment 2, this embodiment provides a first load group in the above multiple lamp load groups that includes at least two lamps with an independent relationship (a control circuit including three lamps with an independent relationship is schematically shown in this figure).

[0132] Specifically, the lamp control circuit connected to the first load group includes: MOS transistors (i.e., Q1, Q2, Q3 in the figure) and diodes that are the same in number as the lamps in the first load group.

[0133] Among them, the source electrode of each MOS transistor is connected to a different lamp, the gate electrode is connected to the control port of the control module corresponding to the lamp, and the drain electrode is connected to the current output port corresponding to the lamp control circuit in the constant current module that is connected to the first load group; a diode is connected between the source electrode and the drain electrode of each MOS transistor, and the source electrode of the MOS transistor is connected to the positive electrode of the diode, and the drain electrode of the MOS transistor is connected to the negative electrode of the diode.

[0134] In the actual application of this control circuit, the specific control process may include the following content:

[0135] When the lighting control signal is to turn on Lamp 1, the MCU sends the magnitude of the current that the constant current module should output and the output port to the constant current module through SPI communication. Among them, the magnitude of the current is the magnitude of the current required to turn on Lamp 1, and the output port is the current output port corresponding to the lamp control circuit connected to the first load group in the constant current module. At the same time, the MCU determines the control signal and the control port that it should output. Among them, the output port is each control port corresponding to the first load group in the control module. The control signal output by the control port of Lamp 1 is high level, and the control signals output by other control ports (i.e., the control ports of Lamp 2 and Lamp 3) are low level. Based on this, MOS transistor Q1 is turned on, MOS transistors Q2 and Q3 are turned off, and all the current output by the constant current module flows through MOS transistor Q1 to Lamp 1, thereby turning on Lamp 1 and turning off Lamp 2 and Lamp 3.

[0136] Similarly, when the lighting control signal is to turn on Lamp 2 or Lamp 3, the control process is similar to the process of turning on Lamp 1 above and will not be elaborated here.

[0137] When the lighting control signal is to turn on at least two lamps, the MCU sends the magnitude of the current that the constant current module should output and the output port to the constant current module through SPI communication. Among them, the magnitude of the current is the sum of the magnitudes of the currents required for each of the at least two lamps to be turned on, and the output port is the current output port corresponding to the lamp control circuit connected to the first load group in the constant current module. At the same time, the MCU determines the control signal and the control port that it should output. Among them, the output port is each control port corresponding to each lamp in the first load group in the control module. The control signals output by the control ports corresponding to the lamps to be turned on in the first load group are all high level, and the control signals output by the control ports corresponding to the other lamps in the first load group are low level. Based on this, the MOS transistors corresponding to the lamps to be turned on in the first load group are turned on, and the MOS transistors corresponding to the other lamps in the first load group are turned off, thereby turning on the lamps to be turned on in the first load group and turning off the other lamps in the first load group.

[0138] The control circuit of the vehicle lamp provided in this embodiment designs a dedicated control circuit for the first load group composed of lamps with independent relationships only by adding MOS transistors, realizes the control of multiple lamps with independent relationships by one constant current channel, achieves the effect of reducing the number of constant current channels on the premise of minimizing electronic devices, and ensures the economy of the implementation of this solution.

[0139] Figure 7 It is a schematic flowchart of the control method of the vehicle lamp provided in the seventh embodiment of this application, asFigure 7 As shown, this embodiment also provides a control method for vehicle lights, which can be applied in the above control module 101. The control method for vehicle lights provided in this embodiment includes:

[0140] S201. Receive the light control signal sent by the vehicle's vehicle controller.

[0141] In this step, in response to the user's control operation on the vehicle lights, the vehicle controller will send a light control signal to the control module; correspondingly, the control module will receive the light control signal sent by the vehicle controller. Among them, the light control signal is used to indicate the control operation on at least one target lamp, and the control operation of the vehicle lights includes the lighting operation or extinguishing operation corresponding to each target lamp.

[0142] S202. Determine the control signal, the output port and magnitude of the current, and the control port for outputting the control signal according to the light control signal.

[0143] In this step, the control module can determine at least one target lamp to be controlled and the control operation for each target lamp according to the received light control signal; according to the control operation for each target lamp, the control signal that the control module should output can be determined, and this control signal is used to control the conduction and disconnection of the circuit where the target lamp is located; based on the normal operating current of at least one target lamp to be lit in the target load lamp group, the magnitude of the current required by the constant current module is determined. In addition, according to the at least one target lamp, the target lamp load group where the at least one target lamp is located can be determined, and then the target lamp control circuit corresponding to the target lamp load group can be determined. The output port and control port of the constant current module corresponding to the connection of the target lamp control circuit are respectively determined as the output port of the current and the output port of the control signal.

[0144] S203. Send the output port and the magnitude of the current to the constant current module, and output the control signal through the control port to the corresponding target lamp control circuit, so that the constant current module outputs the current corresponding to the magnitude of the current to the current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls the corresponding lamp load group.

[0145] In this step, after the control module determines the output port and the magnitude of the output current of the constant current module, it sends the output port and the current magnitude to the constant current module in a communication connection manner, so that the constant current module outputs a current corresponding to the current magnitude from the output port to the current input terminal of the target lamp control circuit; at the same time, after the control module determines the control signal to be output and the control terminal for outputting the control signal, it outputs the control signal from the control port to the control signal input terminal of the target lamp control circuit, so that the target control circuit controls the corresponding lamp load group based on the received control signal and current.

[0146] In a specific implementation manner, the control method for a vehicle lamp provided in this application further includes:

[0147] Determine the magnitude of the output voltage according to the light control signal, and send the magnitude of the output voltage to the boost module, so that the boost module boosts the input voltage according to the magnitude of the output voltage, and inputs the processed target voltage to the constant current module, so that the constant current module outputs a current corresponding to the current magnitude.

[0148] The control method for the vehicle lamp provided in this embodiment can be applied to the control module in the above embodiment, realizing driving multiple lamps in a load lamp group with a certain logical relationship by one constant current channel. This not only reduces the number of constant current channels and the number of driving chips used, but also reduces the control cost of the vehicle lamp; at the same time, it also makes full use of the constant current channels, effectively avoiding the problem of waste of constant current channel resources caused by the long-term idle state of the constant current channels.

[0149] Figure 8 It is a schematic structural diagram of the control device for a vehicle lamp provided in Embodiment VIII of this application, as Figure 8 shown. The control device 30 for a vehicle lamp provided in this embodiment includes:

[0150] A receiving unit 301, configured to receive a light control signal sent by a vehicle's vehicle controller;

[0151] A determining unit 302, configured to determine a control signal, the output port and the magnitude of the current, and the control port for outputting the control signal according to the light control signal;

[0152] A control unit 303, configured to send the output port and the current magnitude to the constant current module, and output the control signal to the corresponding target lamp control circuit through the control port, so that the constant current module outputs a current corresponding to the current magnitude from the output port to the current input terminal of the target lamp control circuit, so that the target lamp control circuit controls the corresponding lamp load group.

[0153] The control device 30 of the vehicle lamp provided in this embodiment can execute the method provided in the above method embodiment. The implementation principle and technical effect are similar, and will not be elaborated here in this embodiment.

[0154] Figure 9 It is a schematic structural diagram of the control module provided in Embodiment 9 of this application. As Figure 9 shown, the control module 40 provided in this embodiment includes: at least one processor 401 and a memory 402.

[0155] Optionally, the control module 40 further includes a communication component 403. Among them, the processor 401, the memory 402, and the communication component 403 are connected through a bus 404.

[0156] In the specific implementation process, at least one processor 401 executes the computer execution instructions stored in the memory 402, so that at least one processor 401 executes the above method.

[0157] The specific implementation process of the processor 401 can be referred to in the above method embodiment. The implementation principle and technical effect are similar, and will not be elaborated here in this embodiment.

[0158] In the above embodiment, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

[0159] The memory may include a read-only memory and a random access memory. The memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may include a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available. For example, static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM).

[0160] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0161] This application also provides a vehicle, including: a vehicle body and the control circuit of the vehicle lamp provided in the above embodiment.

[0162] This application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0163] The present application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0164] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0165] An exemplary readable storage medium is coupled to the processor so that the processor can read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application-specific integrated circuit (ASCI). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0166] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be an indirect coupling or communication connection through some interfaces, devices, or units, and can be in electrical, mechanical, or other forms.

[0167] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0168] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0169] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., all kinds of media that can store program codes.

[0170] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROMs, RAMs, magnetic disks, or optical discs, etc., all kinds of media that can store program codes.

[0171] Finally, it should be noted that: After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation manners of the present invention. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present invention. It is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A control circuit for a vehicle lamp, characterized in that: include: A control module, a constant current module and a plurality of lamp control circuits respectively connected to the control module; Different current output ports of the constant current module are respectively connected to current input terminals of different lamp control circuits, and different control ports of the control module are respectively connected to control signal input terminals of different lamp control circuits; The multiple lamp control circuits are used to control different lamp load groups, which include at least one first load group consisting of lamps with independent relationships, and at least one second load group consisting of lamps with dependent relationships or lamps with mutually exclusive relationships.

2. The control circuit according to claim 1, characterized in that: The control module is used to determine the control signal, the output port and current size of the current and the control port for outputting the control signal according to the received light control signal; The control module is also used to send the output port and the current magnitude to the constant current module, and output the control signal to the corresponding target lamp control circuit through the control port; The constant current module is used to output a current corresponding to the current magnitude to a current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls a corresponding lamp load group.

3. The control circuit according to claim 2, characterized in that: The control circuit also includes a boost module connected to the constant current module and the control module respectively; The control circuit is also used to determine the output voltage according to the light control signal, and send the output voltage to the boost module; The boost module is used to boost the input voltage according to the output voltage, and input the processed target voltage into the constant current module, so that the constant current module outputs a current corresponding to the current magnitude.

4. The control circuit according to claim 3, characterized in that: The control circuit also includes: a power filter module and an SBC power module; The power filter module is connected to the boost module and the SBC power module respectively, and is used to filter the spikes and glitches in the vehicle power supply, and input the filtered voltage to the boost module and the SBC power module respectively; The SBC power module is also connected to the constant current module and the control module respectively. The SBC power module is used to convert the received voltage and input the converted voltage to the constant current module and the control module.

5. The control circuit according to any one of claims 1 to 4, characterized in that: The control circuit also includes a plurality of lamp load groups; The output ends of the plurality of lamp control circuits are respectively connected to the input ends of different lamp load groups.

6. The control circuit according to claim 5, characterized in that: A second load group among the plurality of lamp load groups includes a low beam lamp and a position lamp having a dependent relationship; The lamp control circuit connected to the second load group includes: a MOS tube and a diode; The gate of the MOS tube is connected to the low beam control port of the control module, the source is connected to the low beam, the drain is connected to the position light, the source of the MOS tube is connected to the positive electrode of the diode, and the drain of the MOS tube is connected to the negative electrode of the diode; The current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position lamp.

7. The control circuit according to claim 5, characterized in that: A second load group among the plurality of lamp load groups includes a high beam lamp, a low beam lamp and a position lamp having a dependent relationship; The lamp control circuit connected to the second load group includes: a first MOS transistor, a second MOS transistor, a first diode and a second diode; The gate of the first MOS tube is connected to the high beam control port of the control module, the source is connected to the high beam, the drain is connected to the low beam, the source of the first MOS tube is connected to the anode of the first diode, and the drain of the first MOS tube is connected to the cathode of the first diode; The gate of the second MOS tube is connected to the low beam control port of the control module, the source is connected to the low beam, the drain is connected to the position light, the source of the second MOS tube is connected to the anode of the second diode, and the drain of the second MOS tube is connected to the cathode of the second diode; The current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position lamp.

8. The control circuit according to claim 5, characterized in that: One of the second load groups among the plurality of lamp load groups includes position lamps and turn lamps which are in a mutually exclusive relationship; The lamp control circuit connected to the second load group includes: a MOS tube, a diode, a first resistor and a second resistor; The gate of the MOS tube is connected to the turn signal control port of the control module, the source is connected to the turn signal, the drain is connected to the position light via a first resistor, the source of the MOS tube is connected to the positive electrode of the diode via a second resistor, and the drain of the MOS tube is connected to the negative electrode of the diode via a first resistor; A current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position lamp via a first resistor.

9. The control circuit according to claim 5, characterized in that: One of the second load groups among the plurality of lamp load groups includes position lamps and daytime running lamps which are in a mutually exclusive relationship; The lamp control circuit connected to the second load group includes: a MOS tube, a diode, a first resistor and a second resistor; The gate of the MOS tube is connected to the daytime running light control port of the control module, the source is connected to the daytime running light, the drain is connected to the position light via a first resistor, the source of the MOS tube is connected to the positive electrode of the diode via a second resistor, and the drain of the MOS tube is connected to the negative electrode of the diode via the first resistor; A current output port corresponding to the lamp control circuit connected to the second load group in the constant current module is connected to the position lamp via a first resistor.

10. The control circuit according to claim 5, characterized in that: A first load group of the plurality of lamp load groups includes at least two lamps having an independent relationship; The lamp control circuit connected to the first load group includes: MOS tubes and diodes with the same number of lamps as those in the first load group; Wherein, the source of each MOS tube is connected to a different lamp, the gate is connected to the control port of the control module corresponding to the lamp, and the drain is connected to the current output port corresponding to the lamp control circuit connected to the first load group in the constant current module; A diode is connected between the source and drain of each MOS tube, and the source of the MOS tube is connected to the positive electrode of the diode, and the drain of the MOS tube is connected to the negative electrode of the diode.

11. A method for controlling a vehicle lamp, characterized in that: In the control module of the control circuit of the vehicle lamp according to any one of claims 1 to 9, the method comprises: Receive the lighting control signal sent by the vehicle controller of the vehicle; According to the light control signal, determine the control signal, the output port and current magnitude of the current, and the control port for outputting the control signal; The output port and the current size are sent to a constant current module, and the control signal is output to a corresponding target lamp control circuit through the control port, so that the constant current module outputs a current corresponding to the current size to the current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls the corresponding lamp load group.

12. A control device for a vehicle lamp, characterized in that: include: A receiving unit, used for receiving a light control signal sent by a vehicle controller of the vehicle; A determination unit, used to determine a control signal, an output port and a current magnitude, and a control port for outputting the control signal according to the light control signal; A control unit is used to send the output port and the current size to a constant current module, and output the control signal to a corresponding target lamp control circuit through the control port, so that the constant current module outputs a current corresponding to the current size to a current input end of the target lamp control circuit according to the output port, so that the target lamp control circuit controls a corresponding lamp load group.

13. A control module, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method of claim 11 .

14. A vehicle, characterized in that: The invention comprises a vehicle body and a control circuit of the vehicle light according to any one of claims 1 to 10.

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