Multifunctional LED drive control module and system and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a multifunctional LED drive control module and system and a vehicle, the module comprises at least one constant-current drive module and at least one channel switch module, the output end of the constant-current drive module is connected with the input end of the at least one channel switch module, and the output end of the channel switch module is connected with the output end of the constant-current drive module. The output end of the channel switch module is connected with at least one functional LED module, and the multiple functional LED modules are allowed to be driven to be lightened; and the control module is respectively connected with each constant current driving module and each channel switch module and is used for controlling the corresponding constant current driving module and the channel switch module to work according to the target lightening signal so as to lighten a target functional LED module in the plurality of functional LED modules. Therefore, the problems of waste of DCDC constant-current driving resources of the multifunctional LED module, large size of the whole lamp driver, high EMC difficulty and the like caused by a large number of independent DCDC constant-current driving modules in the headlamp in the related technology are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a kind of multifunctional LED drive control module, system and vehicle. BACKGROUND

[0002] In recent years, with the rapid progress of LED technology and the increasing demand of consumers on vehicle appearance and safety performance, the design and technology of automobile headlamp are undergoing revolutionary changes. LED gradually becomes the main light source of automobile headlamp due to its high brightness, low energy consumption, long service life and other advantages. At the same time, modern automobile headlamp is no longer limited to basic lighting function, but develops towards integration, intelligence and multifunction. The headlamp not only needs to provide basic lighting such as low beam and high beam, but also needs to integrate daytime running light, front position light, front turn signal and other auxiliary functions to improve the recognition and driving safety of the vehicle.

[0003] Although the application of LED technology greatly improves the performance of headlamp, the traditional headlamp control system still has many shortcomings. The traditional control system usually adopts a decentralized driving mode, that is, each light function corresponds to one or more independent driving modules. Although this design meets the needs of different functions to some extent, it also brings a series of problems, such as low utilization rate of driving modules, each function corresponding driving module does not run at full capacity most of the time, resulting in waste of resources; multiple independent driving modules make the whole system bulky, increasing the requirement of installation space; the design of multiple modules increases the production cost, which is not conducive to large-scale popularization and application; the integration and flexibility are limited, the coordination between modules is poor, it is difficult to realize efficient integration and flexible control, especially when facing diversified distributed multifunctional LED modules, the compatibility and adaptability of the system are particularly insufficient.

[0004] In summary, the existing automobile headlamp control system has obvious shortcomings in resource utilization, volume, cost and flexibility. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of multifunctional LED drive control module, system and vehicle to solve the problem that the number of independent DCDC constant current driving modules in headlamp is more in related technology, leading to the waste of multifunctional LED module DCDC constant current driving resources, and the volume of whole lamp driver is large, EMC is difficult and so on.

[0006] The utility model discloses a first aspect provides a kind of multifunctional LED drive control module, comprising: at least one constant current drive module and at least one channel switch module, wherein, the output of constant current drive module is connected with the input of at least one channel switch module, the output of channel switch module is connected with at least one functional LED module, allow driving multiple functional LED module to light up;Control module, wherein, control module is connected with each constant current drive module and each channel switch module respectively, according to target lighting signal control corresponding constant current drive module and channel switch module work, to light up target functional LED module in multiple functional LED module.

[0007] Optionally, the channel switch module includes one or more first switch sub-circuits and one or more second switch sub-circuits.

[0008] Optionally, the output of the constant current drive module is connected with the first output of the channel switch module, one end of the first switch sub-circuit is connected with the output of the constant current drive module, the other end of the first switch sub-circuit is connected with the second output of the channel switch module, and the second switch sub-circuit is connected with the second output.

[0009] Optionally, one end of the first switch sub-circuit is connected with the output of the constant current drive module, the other end of the first switch sub-circuit is connected with the first output of the channel switch module, one end of the second switch sub-circuit is grounded, the other end of the second switch sub-circuit is connected with the second output of the channel switch module, simultaneously, a second first switch sub-circuit is connected in parallel, one end of the second first switch sub-circuit is connected with the output of the constant current drive module, and the other end of the second first switch sub-circuit is connected with the third output of the channel switch module.

[0010] Optionally, the first switch sub-circuit includes first to fourth resistors, a first diode, first to third capacitors, a PMOS tube and a first NMOS tube, wherein, the positive electrode of the first capacitor is connected with the output of the channel switch module, the negative electrode of the first capacitor is grounded, one end of the first resistor is connected with the input of the constant current drive module, the source electrode of the PMOS tube, the cathode of the first diode and the positive electrode of the second capacitor respectively, the drain electrode of the PMOS tube is connected with the output of the channel switch module respectively, the other end of the first resistor is connected with the anode of the first diode, the negative electrode of the second capacitor, the gate electrode of the PMOS tube and one end of the second resistor respectively, the other end of the second resistor is connected with the drain electrode of the first NMOS tube, the gate electrode of the first NMOS tube is connected with one end of the third resistor, one end of the fourth resistor and the positive electrode of the third capacitor respectively, the other end of the third resistor is connected with the control module, the other end of the fourth resistor, the negative electrode of the third capacitor and the source electrode of the first NMOS tube are grounded.

[0011] Optionally, the second switch sub-circuit comprises a fourth capacitor, a fifth capacitor, a fifth resistor, a second diode and a second NMOS tube, wherein the drain of the second NMOS tube is connected with the positive pole of the fourth capacitor and the second output terminal respectively, the gate of the second NMOS tube is connected with the positive pole of the fifth capacitor, one end of the fifth resistor and the cathode of the second diode respectively, the other end of the fifth resistor is connected with the control module, and the source of the second NMOS tube, the negative pole of the fifth capacitor, one end of the fifth resistor and the anode of the second diode are grounded.

[0012] Optionally, the constant current driving module comprises at least one of a BOOST constant voltage circuit and a BUCK constant current circuit.

[0013] Optionally, the multifunctional LED driving control system further comprises a filter anti-reverse module, an LDO module and a signal processing module, wherein the filter anti-reverse module supplies power for each module of the multifunctional LED driving control module, the filter anti-reverse module is connected with the power supply interface of the vehicle body end, the LDO module is connected with the filter anti-reverse module, the control module and the signal processing module respectively, the signal processing module is connected with the signal port and the control module of the vehicle body end respectively, the signal processing module acquires the lighting signal of the functional LED module and sends the lighting signal to the control module.

[0014] The utility model discloses a second aspect provides a kind of multifunctional LED driving control system, comprising: different function functional LED module, the signal port and power supply port of vehicle body end;The multifunctional LED driving control module of first aspect, wherein the multifunctional LED driving control module is connected with different function functional LED module, signal port and power supply port respectively.

[0015] The utility model discloses a third aspect provides a kind of vehicle, comprising the multifunctional LED driving control system of second aspect.

[0016] Therefore, the multifunctional LED drive control module has the advantages that the output end of the constant current drive module is connected with the input end of at least one channel switch module, the output end of the channel switch module is connected with at least one functional LED module, driving multiple functional LED modules to light is allowed, the corresponding constant current drive module and the channel switch module are controlled to work according to a target lighting signal by using the control module, a target functional LED module in the multiple functional LED modules is lighted, the carrying capacity of the DCDC drive can be fully utilized under limited resources, centralized drive control of multiple functional LEDs of the headlamp is realized, the structure is simple, the driver area is greatly reduced, the number of DCDC constant current modules is reduced, the EMC difficulty of the headlamp is reduced, the cost is low, the drive control strategy can be flexibly adjusted according to the distribution of the multifunctional LED module in the headlamp, and the problems of the related art, such as too many independent DCDC constant current drive modules in the headlamp, waste of DCDC constant current drive resources of the multifunctional LED module, large volume of the headlamp driver, high EMC difficulty and the like are solved.

[0017] Additional aspects and advantages of the present application will be described in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A structural schematic view of a multifunctional LED drive control module according to an embodiment of the present application is shown in the figure;

[0020] Figure 2 A principle block diagram of a multifunctional LED drive control system for a headlamp of an automobile according to an embodiment of the present application is shown in the figure;

[0021] Figure 3 A DCDC constant current drive channel switch module circuit according to an embodiment of the present application is shown in the figure;

[0022] Figure 4 A connection schematic view of a DCDC constant current drive channel switch module and each functional LED module according to an embodiment of the present application is shown in the figure; DETAILED DESCRIPTION

[0023] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0024] The multifunctional LED drive control module, system and vehicle of the embodiments of the present application are described below with reference to the drawings. In view of the problems of the related art mentioned above, i.e., the large number of independent DCDC constant current drive modules in the headlamp, leading to the waste of DCDC constant current drive resources of the multifunctional LED module, the large size of the whole lamp driver, the high EMC difficulty and the like, the present application provides a multifunctional LED drive control module, wherein the output end of the constant current drive module is connected to the input end of at least one channel switch module, the output end of the channel switch module is connected to at least one functional LED module, allowing multiple functional LED modules to be driven to light up, and using the control module to control the corresponding constant current drive module and channel switch module to work according to the target lighting signal, so as to light up the target functional LED module in the multiple functional LED modules. The load capacity of the DCDC drive can be fully utilized under limited resources, and centralized drive control of the multiple functional LEDs of the headlamp is realized. The structure is simple, the area of the driver is greatly reduced, the number of DCDC constant current modules is reduced, the EMC difficulty of the headlamp is reduced, the cost is low, and the drive control strategy can be flexibly adjusted according to the distribution of the multifunctional LED module in the whole lamp in different headlamps.

[0025] Specifically, Figure 1 A flowchart of a multifunctional LED drive control module 1 provided by the embodiments of the present application is shown.

[0026] As Figure 1 shown, the multifunctional LED drive control module 1 comprises a constant current drive module 4, a channel switch module 3, a functional LED module 2 and a control module 5.

[0027] Among them, at least one constant current drive module 4 and at least one channel switch module 3, wherein the output end of the constant current drive module 4 is connected to the input end of at least one channel switch module 3, the output end of the channel switch module 3 is connected to at least one functional LED module 2, allowing multiple functional LED modules 2 to be driven to light up; a control module 5, wherein the control module 5 is connected to each constant current drive module 4 and each channel switch module 3, respectively, and controls the corresponding constant current drive module 4 and channel switch module 3 to work according to the target lighting signal, so as to light up the target functional LED module 2 in the multiple functional LED modules 2.

[0028] It can be understood that, in the embodiment of the utility model, including at least one constant current drive module 4 and at least one channel switch module 3, the output of constant current drive module 4 is connected with the input of channel switch module 3, and the output of channel switch module 3 is connected with at least one functional LED module 2, thereby allowing driving multiple functional LED module 2 to light up, control module 5 is connected with each constant current drive module 4 and each channel switch module 3 respectively, according to target light signal control corresponding constant current drive module 4 and channel switch module 3 work, finally realize the accurate lightening of specific target functional LED module 2 in multiple functional LED module 2.

[0029] In the embodiment of the utility model, the channel switch module includes one or more first switch sub-circuits and one or more second switch sub-circuits.

[0030] The first switch sub-circuit and the second switch sub-circuit will be described in detail below, and will not be described here.

[0031] It can be understood that the channel switch module of the embodiment of the utility model is composed of the first switch sub-circuit and the second switch sub-circuit, and includes multiple of both.

[0032] In the embodiment of the utility model, the output of the constant current drive module is connected with the first output of the channel switch module, one end of the first switch sub-circuit is connected with the output of the constant current drive module, the other end of the first switch sub-circuit is connected with the second output of the channel switch module, and the second switch sub-circuit is connected with the second output.

[0033] The first output, the second output and the third output are used to distinguish different outputs, and at the same time, when the result includes multiple first switch sub-circuits and multiple second switch sub-circuits, the first output, the second output and the third output do not refer to the same output, but refer to different outputs. Here, first, second and third are used to describe the same or similar structures, and are not specifically limited.

[0034] It can be understood that the embodiment of the utility model can form the channel switch module 3 through the first switch sub-circuit and the second switch sub-circuit, and there are multiple connection modes. The first connection mode includes one or more first switch sub-circuits and one or more second switch sub-circuits, the output of the constant current drive module 4 is connected with the first output of the channel switch module 3, one end of the first switch sub-circuit is connected with the output of the constant current drive module 4, the other end of the first switch sub-circuit is connected with the second output of the channel switch module 3, and the second switch sub-circuit is connected with the second output. In the case where the driving condition is sufficient, the circuit structure formed by connecting the first switch sub-circuit and the second switch sub-circuit can be connected in parallel with the above-mentioned circuit, so as to increase the output.

[0035] In the embodiment of the utility model, one end of the first switch subcircuit is connected with the output end of the constant current drive module, the other end of the first switch subcircuit is connected with the first output end of the channel switch module, one end of the second switch subcircuit is grounded, the other end of the second switch subcircuit is connected with the second output end of the channel switch module, meanwhile, a second first switch subcircuit is connected in parallel, one end of the second first switch subcircuit is connected with the output end of the constant current drive module, the other end of the second first switch subcircuit is connected with the third output end of the channel switch module.

[0036] It can be understood that, in the embodiment of the utility model, the second connection mode of the channel switch module connects one end of the first switch subcircuit with the output end of the constant current drive module 4, the other end of the first switch subcircuit is connected with the first output end of the channel switch module 3, one end of the second switch subcircuit is grounded, the other end of the second switch subcircuit is connected with the second output end of the channel switch module 3, meanwhile, a second first switch subcircuit is connected in parallel, one end of the second first switch subcircuit is connected with the output end of the constant current drive module 4, the other end of the second first switch subcircuit is connected with the third output end of the channel switch module 3, under the condition that the driving condition is sufficient, the purpose of increasing the output end can be achieved by connecting the second output subcircuit and the first switch subcircuit in parallel according to the above connection mode.

[0037] In the embodiment of the utility model, the first switch subcircuit includes first to fourth resistors, a first diode, first to third capacitors, a PMOS tube and a first NMOS tube, wherein the positive pole of the first capacitor is connected with the output end of the channel switch module 3, the negative pole of the first capacitor is grounded, one end of the first resistor is connected with the input end of the constant current drive module 4, the source electrode of the PMOS tube, the cathode of the first diode and the positive pole of the second capacitor respectively, the drain electrode of the PMOS tube is connected with the output end of the channel switch module 3 respectively, the other end of the first resistor is connected with the anode of the first diode, the negative pole of the second capacitor, the gate electrode of the PMOS tube and one end of the second resistor respectively, the other end of the second resistor is connected with the drain electrode of the first NMOS tube, the gate electrode of the first NMOS tube is connected with one end of the third resistor, one end of the fourth resistor and the positive pole of the third capacitor respectively, the other end of the third resistor is connected with the control module 5, the other end of the fourth resistor, the negative pole of the third capacitor and the source electrode of the first NMOS tube are grounded.

[0038] The PMOS tube is a kind of P-channel semiconductor field effect transistor, and its source electrode and substrate are usually connected to the positive pole of power supply;The NMOS tube is a kind of N-channel semiconductor field effect transistor, and its source electrode and substrate are usually connected to ground or the negative pole of power supply.

[0039] It can be understood that the first switch subcircuit of the embodiment of the utility model is constituted by the first to fourth resistors, the first diode, the first to third capacitors, the PMOS tube and the first NMOS tube, and the first resistor one end is connected with the input end of the constant current drive module 4, the source electrode of the PMOS tube, the negative pole of the first diode and the positive pole of the second capacitor respectively, the second resistor one end is connected with the other end of the first resistor, the other end is connected with the drain electrode of the first NMOS tube, the third resistor one end is connected with the grid electrode of the first NMOS tube, the other end is connected with the control module 5, the fourth resistor one end is connected with the grid electrode of the first NMOS tube, the other end is grounded, the first diode anode is connected with the other end of the first resistor, the cathode is connected with the one end of the first resistor, the first capacitor positive pole is connected with the output end of the channel switch module 3, the negative pole is grounded, the second capacitor positive pole is connected with the one end of the first resistor, the negative pole is connected with the other end of the first resistor, the third capacitor positive pole is connected with the grid electrode of the first NMOS tube, the negative pole is grounded, the PMOS tube drain electrode is connected with the output end of the channel switch module 3, the source electrode is connected with the one end of the first resistor, the grid electrode is connected with the other end of the first resistor, the first NMOS tube grid electrode is connected with the one end of the third resistor, the one end of the fourth resistor and the positive pole of the third capacitor respectively, the drain electrode is connected with the other end of the second resistor, the source electrode is grounded.

[0040] In the embodiment of the utility model, the second switch subcircuit includes fourth capacitor, fifth capacitor, fifth resistor, second diode and second NMOS tube, wherein, the drain electrode of second NMOS tube is connected with the positive pole of fourth capacitor and second output end respectively, the grid electrode of second NMOS tube is connected with the positive pole of fifth capacitor, one end of fifth resistor and the negative pole of second diode respectively, the other end of fifth resistor is connected with control module 5, the source electrode of second NMOS tube, the negative pole of fifth capacitor, one end of fifth resistor and the anode of second diode are grounded.

[0041] It can be understood that the second switch subcircuit of the embodiment of the utility model is constituted by the fourth capacitor, the fifth capacitor, the fifth resistor, the second diode and the second NMOS tube, and the fourth capacitor positive pole is connected with the drain electrode of the second NMOS tube, the negative pole is grounded, the fifth capacitor positive pole is connected with the grid electrode of the second NMOS tube, the negative pole is grounded, the fifth resistor one end is connected with the grid electrode of the second NMOS tube, the other end is connected with the control module 5, the second diode negative pole is connected with the grid electrode of the second NMOS tube, the anode is grounded, the second NMOS tube drain electrode is connected with the positive pole of the fourth capacitor and the second output end respectively, the grid electrode is connected with the positive pole of the fifth capacitor, one end of the fifth resistor and the negative pole of the second diode respectively, the source electrode is grounded.

[0042] In the embodiment of the utility model, the functional LED module 2 includes at least one of the high beam LED module, the low beam LED module, the turn signal LED module, the position lamp LED module and the daytime running lamp LED module.

[0043] It can be understood that the functional LED module 2 of the embodiment of the utility model includes a high beam LED module, a low beam LED module, a turn signal LED module, a position lamp LED module and a daytime running lamp LED module, etc., the functional LED module can realize respective functions through different control signals and circuit designs, and jointly improve the lighting performance and safety of the automobile.

[0044] In the embodiment of the utility model, the constant current drive module 4 includes at least one of BOOST constant voltage circuit and BUCK constant current circuit.

[0045] The BOOST constant voltage circuit is a kind of boost converter, and its main function is to raise the input low voltage to the required high voltage;BUCK constant current circuit is a kind of step-down converter, and its main function is to reduce the input high voltage to the required low voltage, and simultaneously keep the constant output current.

[0046] It can be understood that the constant current drive module 4 of the embodiment of the utility model is responsible for providing stable working current for LED lamp, to ensure that LED lamp can maintain consistent brightness and performance under various working conditions.The constant current drive module 4 can include at least one of BOOST constant voltage circuit and BUCK constant current circuit.

[0047] In the embodiment of the utility model, the multifunctional LED drive control module 1 further includes: filter anti-reverse module, LDO module and signal processing module, wherein the filter anti-reverse module supplies power for each module of the multifunctional LED drive control module 1, the filter anti-reverse module is connected with the power supply interface of the vehicle body end, the LDO module is connected with the filter anti-reverse module, control module 5 and signal processing module respectively, the signal processing module is connected with the signal port of the vehicle body end and control module 5 respectively, the signal processing module obtains the lighting signal of the functional LED module 2, and sends the lighting signal to control module 5.

[0048] The filter anti-reverse module can provide stable, clean power for each module of the multifunctional LED drive control module 1, and prevent damage caused by reverse connection of power supply;LDO (Low Dropout Regulator, Low Dropout Regulator) module is used to convert the voltage provided by the filter anti-reverse module into stable low-voltage output, to supply power for control module 5 and signal processing module.

[0049] It can be understood that the multifunctional LED drive control module 1 of the embodiment of the utility model still includes filter anti-reverse module, LDO module and signal processing module, the filter anti-reverse module can provide stable, clean power supply for each module of multifunctional LED drive control module 1, and prevent damage caused by power supply reverse connection, and is connected with the power supply interface of the vehicle body end;LDO module is connected with filter anti-reverse module, control module 5 and signal processing module respectively, converts the voltage provided by filter anti-reverse module into stable low voltage output, and supplies power for control module 5 and signal processing module;Signal processing module is connected with the signal port of the vehicle body end and control module 5 respectively, can obtain the lighting signal of functional LED module 2, and sends the lighting signal to control module 5.

[0050] The multifunctional LED drive control module provided by the embodiment of the utility model, by connecting the output end of the constant-current drive module with the input end of at least one channel switch module, connecting the output end of the channel switch module with at least one functional LED module, allowing driving multiple functional LED modules to light up, and using the control module to control the corresponding constant-current drive module and channel switch module to work according to the target lighting signal, to light up the target functional LED module in multiple functional LED modules, can fully utilize the load capacity of DCDC drive under limited resources, realize centralized driving control of multiple functional LEDs of the headlamp, simple structure, greatly reduce the driver area, reduce the number of DCDC constant-current modules, reduce the EMC difficulty of the headlamp, low cost, and can also flexibly adjust the driving control strategy according to the distribution of multifunctional LED modules in different headlamps.

[0051] The multifunctional LED drive control module will be further described below through a specific embodiment.

[0052] As Figure 2 shown, the embodiment provides a multifunctional LED drive control system for automobile headlamp. The multifunctional LED drive control system of the headlamp is composed of multifunctional LED drive control module 1 and functional LED module 2, wherein the multifunctional LED drive control module 1 includes: a plurality of constant-current drive channel switches 3, a plurality of DCDC constant-current drive modules 4, an MCU control module 5, an input filter anti-reverse module 6, an LDO module 7, and an input signal processing and lamp fault feedback signal processing module 8.

[0053] The power supply of the body end BCM / ZCU is first processed by the input filter anti-reverse module 6, and then powers the LDO module 7 and the DCDC constant current driving module 4. The LDO module 7 powers the MCU control module 5 and some signal acquisition circuits in the signal processing module 8. The DCDC constant current driving module 4 includes but is not limited to a BOOST constant voltage-BUCK constant current circuit, and the output end thereof is connected to the input end of the constant current driving channel switch module 3. The high beam (HB), low beam (LB), turn signal (TL), position light (PL), daytime running light (DRL) and other function input signals of the body end BCM / ZCU are input to the MCU control module 5 through the signal processing module 8. The MCU control module 5 processes the body instructions and controls the DCDC constant current driving module 4 to output the constant current required for corresponding lighting and controls the conduction of the corresponding channel switch of the constant current driving channel switch 3, so as to realize the normal lighting of the corresponding function LED module 2 and meet the lighting needs of the vehicle during driving. If a fault occurs in the working process of the function LED module 2, the MCU control module 5 feeds back the fault condition of the corresponding function to the body end BCM / ZCU through the fault feedback circuit in the signal processing module 8.

[0054] Figure 3 、 Figure 4 An embodiment of a multifunctional LED driving control system of an automobile headlamp is provided. In combination with Figure 2 、 Figure 3 、 Figure 4 , the multifunctional LED driving control system of the automobile headlamp in the embodiment only uses two DCDC constant current driving modules 4 and flexibly combines two constant current driving channel switch modules 3, realizes the lighting control of the five function LED modules 2 of the entire headlamp, realizes the independent lighting and combined lighting of each function, and meets the lighting needs of different driving modes. There is one LB module and one HB module in the headlamp, the normal working current of the LB module is 1A, and the normal working current of the HB module is 0.9A; there are two DRL / PL modules, DRL is multiplexed with PL, the normal working current of DRL is 0.7A, and the normal working current of PL is 0.07A, wherein the DRL / PL module #2 is in the same light emitting area as the TL module. When the TL normally works, the DRL / PL of the DRL / PL module #2 in the same light emitting area is turned off, and the normal working current of the TL is 0.2A. At normal temperature, the power of the LB module normally working is 3.4*1*6=20.4W, and the power of the HB module normally working is 3.4*0.9*5=15.3W. When the DRL / PL module #1 and the DRL / PL module #2 normally work as DRL, the power is 3.2*0.7*4=8.96W, and when they normally work as PL, the power is 3.2*0.07*4=0.896W. The power of the TL module normally working is 3.2*0.2*8=5.12W.

[0055] If a DCDC constant current drive module with a load capacity of 40W and a DCDC constant current drive module with a load capacity of 25W are used, the requirements of the front headlight of the embodiment for each functional lighting point can be met. The traditional multi-functional LED drive control system scheme is independently driven, and in order to meet the requirements of different functions, different normal working currents, independent lighting and combined lighting during driving, two constant current drive modules with a load capacity of 21W and three constant current drive modules with a load capacity of 10W can be used. The number of constant current drive modules is too large, the size of the driver is too large, the circuit is too complex, and the load capacity of the drive module is not fully utilized. If the LED module is increased, the constant current drive module with the corresponding load capacity needs to be increased, and it is difficult to flexibly expand and apply to other front headlamps. In the embodiment, if the LED module is increased, the constant current drive channel switch can be increased within the total load capacity range of the selected constant current drive module, which is high in flexibility and low in cost.

[0056] The utility model embodiment further provides a multi-functional LED drive control system, the system includes: different function's function LED module, car body end's signal port and power supply port, the multi-functional LED drive control module of preceding paragraph, wherein, multi-functional LED drive control module is linked with different function's function LED module, signal port and power supply port respectively.

[0057] Among them, the signal port of the car body end can receive various signals from the vehicle control system, such as light switch signal, steering signal, etc. The power supply port of the car body end can provide stable power supply for the multi-functional LED drive control module.

[0058] It can be understood that the utility model embodiment further includes different function's function LED module, car body end's signal port and power supply port, multi-functional LED drive control module is linked with different function's function LED module, signal port and power supply port respectively, the signal port of the car body end can receive various signals from the vehicle control system, such as light switch signal, steering signal, etc. The power supply port of the car body end can provide stable power supply for the multi-functional LED drive control module.

[0059] It should be noted that the above explanation and description of the multi-functional LED drive control module embodiment also apply to the multi-functional LED drive control system of this embodiment, which will not be repeated here.

[0060] The multifunctional LED drive control system according to the embodiment of the utility model connects multifunctional LED drive control module with functional LED module, signal port and power supply port of different functions respectively, receives various signals from vehicle control system through signal port of vehicle body end, such as light switch signal, steering signal, etc., provides stable power supply for multifunctional LED drive control module through power supply port of vehicle body end, realizes that can drive control of centralized drive of various function LED of front headlamp under limited resources, realizes the concentrated drive control of various function LED of front headlamp, simple structure greatly reduces the area of driver, reduces the number of DCDC constant current module, reduces the EMC difficulty of front headlamp, and the cost is lower, and according to the distribution of multifunctional LED module in different front headlamps in whole lamp, flexible adjustment drive control strategy.

[0061] The utility model embodiment further provides a vehicle, which comprises the multifunctional LED drive control system.

[0062] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0063] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0064] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A multifunctional LED driving control module, characterized in that, The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. 2.The multifunctional LED driving control module according to claim 1, characterized in that, The application relates to a constant current driving module and a channel switch module. 3.The multifunctional LED driving control module according to claim 2, characterized in that, The application relates to a constant current driving module and a channel switch module.

4. The multifunctional LED driving control module according to claim 2, characterized in that, The application relates to a constant current driving module and a channel switch module.

5. The multifunctional LED driving control module according to any one of claims 2-4, characterized in that, The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module.

6. The multifunctional LED driving control module according to any one of claims 2-4, characterized in that, The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. 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The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving module and a channel switch module. The application relates to a constant current driving The drain of the second NMOS tube is connected with the positive pole of the fourth capacitor and the second output end respectively, the gate of the second NMOS tube is connected with the positive pole of the fifth capacitor, one end of the fifth resistor and the cathode of the second diode respectively, the other end of the fifth resistor is connected with the control module, and the source of the second NMOS tube, the negative pole of the fifth capacitor, one end of the fifth resistor and the anode of the second diode are grounded. 7.The multifunctional LED driving control module according to claim 1, characterized in that, The constant current driving module comprises at least one of a BOOST constant voltage circuit and a BUCK constant current circuit. 8.The multifunctional LED driving control module according to claim 1, wherein, Further comprising: a filter anti-reverse module, an LDO module and a signal processing module, wherein, the filter anti-reverse module supplies power for each module of the multifunctional LED driving control module, the filter anti-reverse module is connected with the power supply interface of the vehicle body end, the LDO module is connected with the filter anti-reverse module, the control module and the signal processing module respectively, the signal processing module is connected with the signal port of the vehicle body end and the control module respectively, the signal processing module acquires the lighting signal of the functional LED module and sends the lighting signal to the control module.

9. A multi-functional LED driving control system, characterized by, comprising: functional LED modules with different functions, a signal port and a power supply port of the vehicle body end; the multifunctional LED driving control module of any one of claims 1-8, wherein the multifunctional LED driving control module is connected with the functional LED modules with different functions, the signal port and the power supply port respectively.

10. A vehicle characterized by comprising: the multifunctional LED driving control system of claim 9.

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