Control system and control method of LED module on vehicle lamp and vehicle lamp

Abstract

The application discloses a control system and method of an LED module on a vehicle lamp and the vehicle lamp. In the technical scheme of the application, when the output voltage of the power supply module is too low and / or the temperature is too high, the switch module is disconnected. When the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the first main control module controls the switch module to be disconnected, and then the first main control module controls the switch module to be closed again. The second voltage value output by the charge-discharge module is detected by the second main control module each time the switch module is closed. The switch module is disconnected and then closed again. The process time is short. Therefore, when the second voltage value is greater than a first preset value, it is indicated that the switch module is disconnected and then closed in a short time. The reason for the disconnection of the switch module is that the output voltage of the power supply module is too low and / or the temperature is too high. The emission end does not need a power carrier generating device, and the receiving end does not need to be provided with a demodulation circuit device. The structure is simple, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of LED lighting technology, in particular to a control system and control method of LED module on vehicle lamp and vehicle lamp. BACKGROUND

[0002] The power line can be used for transmitting power, and can also be used as a signal transmission medium to transmit signals to the entire power network. This power communication technology has been applied to building automation, smart grid, vehicle communication, portable products and other fields. In application, the power communication technology modulates digital signals into high-frequency carrier signals, loads the carrier signals onto the power line, and then transmits them to the power network through the power line. The original digital signals are recovered by demodulation processing at the receiving end of the power network, and communication is realized.

[0003] At present, when this power communication technology is applied, for example, a mobile power supply is used to power the vehicle lamp, a carrier generating device needs to be set at the transmitting end of the power network, and a demodulation circuit device needs to be set at the receiving end of the power network, so that the structure becomes complex and the cost is high.

[0004] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0005] In view of the above problems of the prior art, the present application aims to provide a control system and control method of LED module on vehicle lamp and vehicle lamp to solve the problem of complex power structure and high cost of the power communication technology using the power line as a transmission medium.

[0006] The technical scheme adopted by the present application to solve the technical problem is to provide a control system of LED module on vehicle lamp, comprising:

[0007] a power supply module;

[0008] a switch module, the input end of the switch module being connected with the power supply module;

[0009] a temperature detection module, connected with the power supply module, and used for detecting the temperature of the power supply module and outputting a temperature detection value;

[0010] a voltage detection module, connected with the power supply module, and used for detecting the output voltage of the power supply module and outputting a voltage detection value;

[0011] a first voltage stabilizing module, connected with the power supply module;

[0012] A first main control module is connected with the temperature detection module, the voltage detection module, the switch module and the first voltage stabilizing module, and is used to acquire the temperature detection value and the voltage detection value; when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the first main control module is further used to control the switch module to be turned off; and after the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value and the first main control module controls the switch module to be turned off, the first main control module is further used to control the switch module to be turned on again.

[0013] A voltage input module is connected with the output end of the switch module, and is used to access the voltage output by the output end of the switch module.

[0014] An LED driving module is connected with the voltage input module.

[0015] A charge-discharge module, which is in a charging state or a fully-charged state when the switch module is turned on, and is in a discharging state when the switch module is turned off.

[0016] A second voltage stabilizing module is connected with the voltage input module.

[0017] A second main control module is connected with the LED driving module, the second voltage stabilizing module and the charge-discharge module; the second main control module is used to output a first voltage to the charge-discharge module when the switch module is turned on, and is further used to detect a second voltage value output by the charge-discharge module each time the switch module is turned on; when the second voltage value is greater than a first preset value, the second main control module is further used to control the LED driving module to reduce the output power of the LED module.

[0018] Further, the power supply module comprises a battery and a USB access unit.

[0019] The battery is connected with the first voltage stabilizing module, the temperature detection module, the voltage detection module, the switch module and the USB access unit.

[0020] The USB access unit is connected with the first main control module and the first voltage stabilizing module; the USB access unit is used to access a charging source to the battery to charge the battery, and is further used to write a program into the first main control module.

[0021] The first master module comprises a first chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a first voltage stabilizing diode, a first transistor switch unit, a second transistor switch unit and a third transistor switch unit;

[0022] The first pin and the eighteenth pin of the first chip are connected with the voltage detection module, the second pin of the first chip is connected with one end of the first resistor, the other end of the first resistor is connected with the first voltage stabilizing module, the second pin of the first chip is also connected with the USB access unit, the third pin of the first chip is grounded, the fourth pin of the first chip is connected with one end of the second resistor, the other end of the second resistor is connected with the USB access unit, the fifth pin of the first chip is connected with one end of the third resistor, the other end of the third resistor is connected with the USB access unit, the sixth pin of the first chip is connected with the first voltage stabilizing module and the seventh pin of the first chip, the eighth pin of the first chip is connected with one end of the fifth resistor, the other end of the fifth resistor is grounded, the ninth pin of the first chip is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with the first voltage stabilizing module, the tenth pin of the first chip is connected with the USB access unit, the eleventh pin of the first chip is connected with one end of the eighth resistor, the other end of the eighth resistor is connected with the first voltage stabilizing module, the twelfth pin of the first chip is grounded, the thirteenth pin of the first chip is connected with the switch module, the fourteenth pin of the first chip is connected with the USB access unit, the fifteenth pin of the first chip is connected with one end of the ninth resistor, the other end of the ninth resistor is connected with the first voltage stabilizing module, the fifteenth pin of the first chip is also connected with the USB access unit, the nineteenth pin of the first chip is connected with the USB access unit, and the twentieth pin of the first chip is connected with the temperature detection module.

[0023] One end of the fourth resistor is connected with the USB access unit, the other end of the fourth resistor is connected with the first end of the first transistor switch unit, the second end of the first transistor switch unit is grounded, the third end of the first transistor switch unit is connected with the first end of the second transistor switch unit, the second end of the second transistor switch unit is connected with one end of the fifth resistor, the second transistor switch unit is connected with the first voltage stabilizing module, the first end of the third transistor switch unit is connected with the tenth pin of the first chip, the second end of the third transistor switch unit is grounded, the third end of the third transistor switch unit is connected with one end of the second capacitor, the other end of the second capacitor is connected with the negative electrode of the first voltage stabilizing diode and one end of the seventh resistor, the positive electrode of the first voltage stabilizing diode is grounded, the other end of the seventh resistor is connected with the USB access unit.

[0024] Further, the temperature detection module comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a fourth capacitor, a fifth capacitor and a first thermistor.

[0025] One end of the tenth resistor and one end of the fourth capacitor are connected with a first power supply end, the connection end of the tenth resistor and the fourth capacitor is also connected with the USB access unit, the other end of the fourth capacitor is grounded, the other end of the tenth resistor is connected with one end of the eleventh resistor, the other end of the eleventh resistor is connected with one end of the twelfth resistor, the other end of the twelfth resistor is grounded, the connection end of the eleventh resistor and the tenth resistor is also connected with the first thermistor, the connection end of the eleventh resistor and the twelfth resistor is connected with the twentieth pin of the first chip, one end of the fifth capacitor is connected on the connection path of the eleventh resistor and the first thermistor, the other end of the fifth capacitor is grounded.

[0026] Further, the voltage detection module comprises a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a first switch tube, a fourth transistor switch unit and a sixth capacitor.

[0027] One end of the thirteenth resistor is connected with the battery, the other end of the thirteenth resistor is connected with the 18th pin of the first chip through the fourth transistor switch unit, the gate of the first switch tube is connected with the other end of the thirteenth resistor, the source of the first switch tube is connected with one end of the thirteenth resistor, the drain of the first switch tube is connected with one end of the fourteenth resistor, the other end of the fourteenth resistor is connected with one end of the fifteenth resistor, the other end of the fifteenth resistor is grounded, the other end of the fourteenth resistor is also connected with the 1st pin of the first chip, one end of the sixth capacitor is connected on the connection path of the fourteenth resistor and the 1st pin of the first chip, the other end of the sixth capacitor is grounded.

[0028] Further, the switch module comprises a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a seventh capacitor, a second switch tube, a third switch tube and a second voltage stabilizing diode.

[0029] One end of the sixteenth resistor is connected with the battery, the other end of the sixteenth resistor is connected with one end of the first fuse, the other end of the first fuse is connected with one end of the seventeenth resistor and the source of the second switch tube, the other end of the seventeenth resistor is connected with the gate of the second switch tube, the gate of the second switch tube is connected with one end of the eighteenth resistor, the other end of the eighteenth resistor is connected with the drain of the third switch tube, the gate of the third switch tube is connected with the 13th pin of the first chip, the source of the third switch tube is grounded, one end of the nineteenth resistor is connected with the gate of the third switch tube, the other end of the nineteenth resistor is connected with the source of the third switch tube, one end of the seventh capacitor is connected with the negative electrode of the second voltage stabilizing diode and the drain of the second switch tube, the other end of the seventh capacitor is connected with the positive electrode of the first voltage stabilizing diode and the ground.

[0030] The negative electrode of the second voltage stabilizing diode is the positive output end of the switch module, and the positive electrode of the second voltage stabilizing diode is the negative output end of the switch module.

[0031] Further, the charging and discharging module comprises a twentieth resistor, a twenty-first resistor and an eighth capacitor.

[0032] One end of the twentieth resistor is connected with the second master control module, one end of the twenty-first resistor and one end of the eighth capacitor are connected with the other end of the twentieth resistor, and the other end of the twenty-first resistor and the other end of the eighth capacitor are grounded.

[0033] The further arrangement of the application, the voltage input module comprises: a second fuse, a first bidirectional voltage stabilizing diode, a second bidirectional voltage stabilizing diode, a ninth capacitor, a tenth capacitor, a first diode, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a third voltage stabilizing diode, a first diode, a first field effect transistor, a second field effect transistor, a fifth transistor switch unit and a first filter unit;

[0034] One end of the second fuse is connected with the output end of the switch module, the other end of the second fuse is connected with the first pin of the first field effect transistor, the first pin, the second pin, the fourth pin and the fifth pin of the first field effect transistor are connected, one end of the first bidirectional voltage stabilizing diode and one end of the ninth capacitor are connected to the other end of the second fuse, the other end of the first bidirectional voltage stabilizing diode and the other end of the ninth capacitor are grounded, the negative electrode of the first diode is connected to the connection path of the other end of the second fuse and the first pin of the first field effect transistor, the positive electrode of the first diode is connected with one end of the twenty-second resistor, the other end of the twenty-second resistor is connected with one end of the twenty-third resistor, one end of the twenty-third resistor is also connected with the third pin of the first field effect transistor, the other end of the twenty-third resistor is grounded, one end of the twenty-fourth resistor is connected with one end of the twenty-third resistor, the other end of the twenty-fourth resistor is connected with the positive electrode of the third voltage stabilizing diode, the negative electrode of the third voltage stabilizing diode is connected with the sixth pin of the first field effect transistor, one end of the tenth capacitor is connected with the sixth pin of the first field effect transistor, the other end of the tenth capacitor is grounded;

[0035] The first pin, the second pin, the fourth pin and the fifth pin of the second field effect transistor are connected, the third pin of the second field effect transistor is connected with one end of the tenth capacitor, one end of the tenth capacitor is also connected with the second voltage stabilizing module, the other end of the tenth capacitor is grounded, the first filter unit is connected with the fifth pin of the second field effect transistor, one end of the second bidirectional voltage stabilizing diode and one end of the twenty-fifth resistor are connected to the third pin of the second field effect transistor, the other end of the second bidirectional voltage stabilizing diode and the other end of the twenty-fifth resistor and one end of the twenty-sixth resistor are connected, one end of the twenty-sixth resistor is also connected with the sixth pin of the second field effect transistor, the other end of the twenty-sixth resistor is connected with the third end of the fifth transistor switch unit, the second end of the fifth transistor switch unit is grounded;

[0036] The end of the first filter unit connected with the fifth pin of the second field effect transistor is connected with the LED driving module;

[0037] The second main control module comprises: a second chip, a twenty-seventh resistor and an eleventh capacitor;

[0038] The 9th pin of the second chip is connected with one end of the 27th resistor, the other end of the 27th resistor is connected with the second voltage stabilizing module, the 6th pin of the second chip is connected with the second voltage stabilizing module, one end of the 11th capacitor is connected with the 6th pin of the second chip, the other end of the 11th capacitor is grounded, the 14th pin of the second chip is connected with the LED driving module, and the 16th pin of the second chip is connected with the 1st end of the fifth transistor switch unit.

[0039] The application further provides a control method of the control system of the LED module on the vehicle lamp.

[0040] The temperature of the power supply module is acquired, and a temperature detection value is outputted;

[0041] The output voltage of the power supply module is acquired, and a voltage detection value is outputted;

[0042] When the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the switch module is controlled to be closed, and after the switch module is controlled to be closed when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, the switch module is controlled to be closed again, wherein the switch module is in a charging state or a full charging state when the switch module is closed, and the switch module is in a discharging state when the switch module is opened;

[0043] The charging and discharging module is outputted with a first voltage for charging when the switch module is closed;

[0044] The second voltage value outputted by the charging and discharging module is detected after the switch module is closed each time, and when the second voltage value is greater than a first preset value, the LED driving module is controlled to reduce the output power of the LED module.

[0045] The application further provides a vehicle lamp, which comprises an LED module and the control system of the LED module on the vehicle lamp.

[0046] The application has the beneficial effects that:

[0047] The application discloses a control system and control method of an LED module on a vehicle lamp and the vehicle lamp. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a principle block diagram of the control system of the LED module on the vehicle lamp.

[0049] Figure 2 is a circuit connection diagram of the power supply module and the temperature detection module in an embodiment of the application.

[0050] Figure 3 is a circuit diagram of the switch module in an embodiment of the application.

[0051] Figure 4 is a circuit diagram of the first main control module in an embodiment of the application.

[0052] Figure 5 is a circuit diagram of the first voltage stabilizing module in an embodiment of the application.

[0053] Figure 6 is a circuit diagram of the voltage detection module in an embodiment of the application.

[0054] Figure 7 is a circuit connection diagram of the second main control module and the charge-discharge module in an embodiment of the application.

[0055] Figure 8 is a circuit connection diagram of the program downloading module, the second voltage stabilizing module and the voltage input module in one embodiment of the present application.

[0056] Figure 9 is a circuit diagram of the first state display module in one embodiment of the present application.

[0057] Figure 10 is a circuit diagram of the second state display module in one embodiment of the present application.

[0058] Figure 11 is a circuit diagram of the LED driving module in one embodiment of the present application.

[0059] Figure 12 is a circuit diagram of the LED module in one embodiment of the present application.

[0060] Figure 13 is a flow chart of the control method of the LED module on the vehicle lamp in one embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to have a clearer understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical solutions, and cannot be understood as indicating that the devices or elements indicated must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0062] As shown in Figure 1 , the control system of the LED module on the vehicle lamp provided by the present application can include a power supply module 10, a switch module 15, a voltage detection module 12, a first voltage stabilizing module 13, a first master control module 14, a voltage input module 16, an LED driving module 19, a charge and discharge module 20, a second voltage stabilizing module 17 and a second master control module 18.

[0063] The input end of the switch module 15 is connected with the power supply module 10, wherein the switch module 15 includes two states of being closed and being turned off; the temperature detection module 11 is connected with the power supply module 10, and the temperature detection module 11 is used for detecting the temperature of the power supply module 10 and outputting a temperature detection value; the voltage detection module 12 is connected with the power supply module 10, and the voltage detection module 12 is used for detecting the output voltage of the power supply module 10 and outputting a voltage detection value; the first voltage stabilizing module 13 is connected with the power supply module 10, and the first voltage stabilizing module 13 is used for supplying power to the first main control module 14; the first main control module 14 is connected with the temperature detection module 11, the voltage detection module 12, the switch module 15 and the first voltage stabilizing module 13, and the first main control module 14 is used for acquiring the temperature detection value and the voltage detection value; when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the first main control module 14 is further used for controlling the switch module 15 to be turned off, and after the first main control module 14 controls the switch module 15 to be turned off when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, the first main control module 14 is further used for re-controlling the switch module 15 to be closed; the voltage input module 16 is connected with the output end of the switch module 15, and the voltage input module 16 is used for connecting the voltage output by the switch module 15; the LED driving module 19 is connected with the voltage input module 16, and the LED driving module 19 is used for driving the LED module 21; the charge-discharge module 20 is in a charging state or a fully charged state when the switch module 15 is closed, and the charge-discharge module 20 is in a discharging state when the switch module 15 is turned off; the second voltage stabilizing module 17 is connected with the voltage input module 16; the second main control module 18 is connected with the LED driving module 19, the second voltage stabilizing module 17 and the charge-discharge module 20, and the second main control module 18 is used for outputting a first voltage to the charge-discharge module 20 when the switch module 15 is closed, and is further used for detecting a second voltage value output by the charge-discharge module 20 each time the switch module 15 is closed, wherein when the second voltage value is greater than a first preset value, the second main control module 18 is further used for controlling the LED driving module 19 to reduce the output power of the LED module 21.

[0064] In the present embodiment, when the output voltage of the power supply module 10 is too low and / or the temperature is too high, the switch module 15 is opened, and after the first main control module 14 controls the switch module 15 to be closed, the first main control module 14 controls the switch module 15 to be opened again, wherein the second voltage value output by the charge-discharge module 20 is detected by the second main control module 18 each time the switch module 15 is closed, since the charge-discharge module 20 is in a discharging state when the switch module 15 is opened, the second voltage value output by the charge-discharge module 20 is related to the opening time of the switch module 15, the longer the opening time of the switch module 15, the smaller the second voltage value output by the charge-discharge module 20, and the shorter the opening time of the switch module 15, the larger the second voltage value output by the charge-discharge module 20, and since the switch module 15 is closed again after being opened due to the too low output voltage and / or the too high temperature of the power supply module 10, the process time is short (for example, the process time can be set to 10 ms, 13 ms, 15 ms, etc.), thus, the reason for the opening of the switch module 15 can be determined according to the detected second voltage value output by the charge-discharge module 20, that is, when the second voltage value is greater than a first preset value, it indicates that the switch module 15 is opened and closed in a short time, and the reason for the opening of the switch module 15 is that the output voltage of the power supply module 10 is too low and / or the temperature is too high, and the second main control module 18 further controls the LED driving module 19 to reduce the output power of the LED module 21. The control system of the LED module on the vehicle lamp does not need to be provided with a power carrier generating device and a demodulation circuit device, and has a simple structure and low cost.

[0065] Here, it should be noted that the first main control module 18 charges the charge-discharge module 20 with the first voltage when the switch module 15 is closed, and the charge-discharge module 20 is in a discharging state when the switch module 15 is opened, thus, when the closing time of the switch module 15 is long, the charge-discharge module 20 can be fully charged by the first main control module 18, and thus, the charge-discharge module 20 can be in a charging state or a fully charged state when the switch module 15 is closed.

[0066] In the present embodiment, the first temperature value and the first voltage value are preset in the first main control module 14, and the first preset value is preset in the second main control module 18.

[0067] In some embodiments, as Figure 1 , Figure 2As shown, the power supply module 10 can include a battery 102 and a USB access unit 101; wherein the battery 102 is connected with a first voltage stabilizing module 13, a temperature detection module 11, a voltage detection module 12, a switch module 15 and the USB access unit 101; the USB access unit 101 is connected with a first main control module 14, the first voltage stabilizing module 13 and the first main control module 14, the USB access unit 101 is used for accessing a charging source to the battery 102, and the USB access unit 101 is also used for writing a program into the first main control module 14.

[0068] In the embodiment, the battery 102 can supply power to the first main control module 14 through the first voltage stabilizing module 13, and can output a voltage to the voltage input module 16 through the switch module 15; when detecting the temperature of the power supply module 10, the temperature of the battery 102 is detected by the temperature detection module 11, that is, the detected temperature of the battery 102 is the temperature of the power supply module 10; when detecting the output voltage of the power supply module 10, the output voltage of the battery 102 is detected by the voltage detection module 12, that is, the detected output voltage of the battery 102 is the output voltage of the power supply module 10. Wherein, during the use of the battery 102, when the battery 102 is insufficient, the charging source can be accessed through the USB access unit 101 to charge the battery 102.

[0069] Further, as shown in the Figure 2 The USB access unit 101 is a circuit structure which can charge the battery 102 and write a program into the first chip U1, and is built with a third chip U3, a fourth chip U4 and a first interface J1 as core devices; wherein the first interface J1 is a USB interface, the model of the third chip U3 is HUSB238, and the model of the fourth chip U4 is SC8910A.

[0070] In some embodiments, as shown in the Figure 4As shown, the first main control module 14 can include a first chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first voltage stabilizing diode D1, a first transistor switch unit, a second transistor switch unit, and a third transistor switch unit; a first pin and a twentieth pin of the first chip U1 are connected with the voltage detection module 12, a second pin of the first chip U1 is connected with one end of the first resistor R1, the other end of the first resistor R1 is connected with the first voltage stabilizing module 13, the second pin of the first chip U1 is also connected with the USB access unit 101, a third pin of the first chip U1 is grounded, a fourth pin of the first chip U1 is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the USB access unit 101, a fifth pin of the first chip U1 is connected with one end of the third resistor R3, the other end of the third resistor R3 is connected with the USB access unit 101, a sixth pin of the first chip U1 is connected with the first voltage stabilizing module 13 and a seventh pin of the first chip U1, an eighth pin of the first chip U1 is connected with one end of the fifth resistor R5, the other end of the fifth resistor R5 is grounded, a ninth pin of the first chip U1 is connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with the first voltage stabilizing module 13, a tenth pin of the first chip U1 is connected with the USB access unit 101, an eleventh pin of the first chip U1 is connected with one end of the eighth resistor R8, the other end of the eighth resistor R8 is connected with the first voltage stabilizing module 13, a twelfth pin of the first chip U1 is grounded, a thirteenth pin of the first chip U1 is connected with the switch module 15, a fourteenth pin of the first chip U1 is connected with the USB access unit 101, a fifteenth pin of the first chip U1 is connected with one end of the ninth resistor R9, the other end of the ninth resistor R9 is connected with the first voltage stabilizing module 13, the fifteenth pin of the first chip U1 is also connected with the USB access unit 101, a nineteenth pin of the first chip U1 is connected with the USB access unit 101, and a twentieth pin of the first chip U1 is connected with the temperature detection module 11.One end of the fourth resistor R4 is connected with the USB access unit 101, the other end of the fourth resistor R4 is connected with the first end of the first transistor switch unit, the second end of the first transistor switch unit is grounded, the third end of the first transistor switch unit is connected with the first end of the second transistor switch unit, the second end of the second transistor switch unit is connected with one end of the fifth resistor R5, the second transistor switch unit is connected with the first voltage stabilizing module 13, the first end of the third transistor switch unit is connected with the tenth pin of the first chip U1, the second end of the third transistor switch unit is grounded, the third end of the third transistor switch unit is connected with one end of the second capacitor C2, the other end of the second capacitor C2 is connected with the negative electrode of the first voltage stabilizing diode D1 and one end of the seventh resistor R7, the positive electrode of the first voltage stabilizing diode D1 is grounded, the other end of the seventh resistor R7 is connected with the USB access unit 101.

[0071] Specifically, the first chip U1 is provided with a first temperature value and a first voltage value, when detecting the temperature of the battery 102 and the output voltage of the battery 102, the temperature of the battery 102 detected by the temperature detection module 11 is obtained by the first chip U1, and the output voltage of the battery 102 detected by the voltage detection module 12 is obtained by the first chip U1; wherein when the temperature detection value obtained by the first chip U1 is greater than the first temperature value and / or the voltage detection value obtained by the first chip U1 is less than the first voltage value, the first chip U1 controls the switch module 15 to be opened, and after the temperature detection value is greater than the first temperature value and / or the voltage detection value is less than the first voltage value, the first chip U1 controls the switch module 15 to be opened, the first chip U1 also controls the switch module 15 to be closed again.

[0072] In the embodiment, the first transistor switch unit comprises a first transistor Q7, a resistor (a driving resistor of the first transistor Q7) is connected in series between the base of the first transistor Q7 and the fourth resistor R4, a resistor is connected in series between the base and the emitter of the first transistor Q7, wherein the driving resistor on the first transistor Q7 is connected to the first end of the first transistor switch unit, the emitter of the first transistor Q7 is the second end of the first transistor switch unit, and the collector of the first transistor Q7 is the third end of the first transistor switch unit. The second transistor switch unit comprises a second transistor Q8, a resistor (a driving resistor of the second transistor Q8) is connected in series between the base of the second transistor Q8 and the collector of the first transistor Q7, a resistor is connected in series between the base and the emitter of the second transistor Q8, wherein the driving resistor on the second transistor Q8 is connected to the first end of the second transistor switch unit, the collector of the second transistor Q8 is the second end of the second transistor switch unit, and the emitter of the second transistor Q8 is the third end of the second transistor switch unit. The third transistor switch unit comprises a third transistor Q9, a resistor (a driving resistor of the third transistor Q9) is connected in series between the base of the third transistor Q9 and the second capacitor C2, a resistor is connected in series between the base and the emitter of the third transistor Q9, wherein the driving resistor on the third transistor Q9 is connected to the third end of the third transistor switch unit, the emitter of the third transistor Q9 is the second end of the third transistor switch unit, and the collector of the third transistor Q9 is the first end of the third transistor switch unit.

[0073] In the embodiment, the first transistor Q7 and the third transistor Q9 are NPN type transistors, and the second transistor Q8 is a PNP type transistor. The first chip U1 can be, but is not limited to, a chip with a model number of EFM8UB10F8G-C-QFN20.

[0074] In the embodiment, when the first chip U1 is connected with the USB access unit 101, the other end of the second resistor R2 is connected with the eighth pin of the first interface J1, the other end of the third resistor R3 is connected with the seventh pin of the first interface J1, the other end of the fourth resistor R4 and the other end of the seventh resistor R7 are connected with the thirteenth pin of the first interface J1, the second pin of the first chip U1 is connected with the fifth pin of the third chip U3, the nineteenth pin of the first chip U1 is connected with one end of the forty-first resistor R41, and the tenth pin of the first chip U1 is connected with the eleventh pin of the first interface J1.

[0075] Further, as Figure 5As shown, the first voltage stabilizing module 13 can be a circuit built around the fifth chip U5, which is LY7233M. The anode of the second diode D9 in the first voltage stabilizing module 13 and the gate of the fourth switch tube Q4 in the first voltage stabilizing module 13 are connected to the 13th pin of the first interface J1, the drain of the fourth switch tube Q4 in the first voltage stabilizing module 13 is connected to the battery 102, and the 2nd pin of the fifth chip U5 (the output end of the first voltage stabilizing module 13) is connected to the other end of the eighth resistor R8 and the 3rd end of the second triode Q8.

[0076] In this embodiment, when downloading programs into the first chip U1, the first interface J1 is connected to a program downloading device (such as a computer, a notebook computer, a tablet, or the like), at this time, the 13th pin of the first interface J1 has an output voltage, at this time, the fourth switch tube Q4 is open, the battery 102 does not need to supply power to the fifth chip U5, the fifth chip U5 is supplied with power through the 13th pin of the first interface J1, so that the fifth chip U5 can supply power to the first chip U1 to complete program downloading; after program downloading is completed, the first interface J1 is disconnected from the program downloading device, at this time, the 13th pin of the first interface J1 has no output voltage, at this time, the fourth switch tube Q4 is closed, the battery 102 supplies power to the fifth chip U5, so that the fifth chip U5 can supply power to the first chip U1, and the first chip U1 can work normally.

[0077] Further, the control system of the LED module on the vehicle lamp further includes a first state display module 23, as shown in Figure 9 As shown, it is a specific circuit structure diagram of the first state display module 23, wherein, when the control system of the LED module on the vehicle lamp works, the state of the first chip U1 can be judged according to the light-on condition in the first state display module 23, and the first chip U1 can be controlled through the first button in the first state display module 23, wherein, the common connection end of the sixteenth capacitor C16 and the sixty-fourth resistor R64 in the first state display module 23 is connected to the 11th pin of the first chip U1, the common connection end of the sixtieth resistor R60 and the sixty-second resistor R62 in the first state display module 23 is connected to the 17th pin of the first chip, and the common connection end of the sixty-first resistor R61 and the sixty-third resistor R63 in the first state display module 23 is connected to the 10th pin of the first chip U1.

[0078] In some embodiments, as Figure 2As shown, the temperature detection module 11 can include a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a fourth capacitor C4, a fifth capacitor C5, and a first thermistor NTC; one end of the tenth resistor R10 and one end of the fourth capacitor C4 are connected to the first power supply end, the common connection end of the tenth resistor R10 and the fourth capacitor C4 is also connected to the USB access unit 101, the other end of the fourth capacitor C4 is grounded, the other end of the tenth resistor R10 is connected to one end of the eleventh resistor R11, the other end of the eleventh resistor R11 is connected to one end of the twelfth resistor R12, the other end of the twelfth resistor R12 is grounded, the connection end of the eleventh resistor R11 and the tenth resistor R10 is also connected to the first thermistor, the connection end of the eleventh resistor R11 and the twelfth resistor R12 is connected to the 20th pin of the first chip U1, one end of the fifth capacitor C5 is connected to the connection path of the eleventh resistor R11 and the first thermistor, and the other end of the fifth capacitor C5 is grounded.

[0079] Specifically, when the first thermistor NTC is provided, it can be attached to the surface of the battery 102. When detecting the temperature of the battery 102, the voltage value of the connection end of the eleventh resistor R11 and the twelfth resistor R12 can be detected by the first chip U1, wherein when the resistance value of the first thermistor NTC changes, the voltage value also changes accordingly, therefore, the first chip U1 can determine the resistance value of the first thermistor NTC according to the obtained voltage value of the connection end of the eleventh resistor R11 and the twelfth resistor R12, and further determine the temperature value of the battery 102.

[0080] Of course, when detecting the temperature of the battery 102, other methods such as a temperature sensor can also be used, which detects the temperature of the battery 102 by the temperature sensor and transmits the detection result to the first chip U1.

[0081] In some embodiments, as shown, Figure 6 As shown, the voltage detection module 12 can include a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a first switch tube Q1, a fourth transistor switch unit, and a sixth capacitor C6; one end of the thirteenth resistor R13 is connected to the battery 102, the other end of the thirteenth resistor R13 is connected to the 18th pin of the first chip U1 through the fourth transistor switch unit, the gate of the first switch tube Q1 is connected to the other end of the thirteenth resistor R13, the source of the first switch tube Q1 is connected to one end of the thirteenth resistor R13, the drain of the first switch tube Q1 is connected to one end of the fourteenth resistor R14, the other end of the fourteenth resistor R14 is connected to one end of the fifteenth resistor R15, the other end of the fifteenth resistor R15 is grounded, the other end of the fourteenth resistor R14 is also connected to the 1st pin of the first chip U1, one end of the sixth capacitor C6 is connected to the connection path of the fourteenth resistor R14 and the 1st pin of the first chip U1, and the other end of the sixth capacitor C6 is grounded.

[0082] Specifically, the fourth transistor switching unit includes a fourth transistor Q10. A resistor (the driving resistor of the fourth transistor Q10) is connected in series between the base of the fourth transistor Q10 and the first chip U1. A resistor is connected in series between the base and emitter of the fourth transistor Q10. The end of the driving resistor on the fourth transistor Q10 furthest from the fourth transistor Q10 is the first terminal of the fourth transistor switching unit. The emitter of the fourth transistor Q10 is the third terminal of the fourth transistor switching unit. The collector of the fourth transistor Q10 is the second terminal of the fourth transistor switching unit. In this embodiment, when detecting the output voltage of battery 102, pin 18 of the first chip U1 outputs a high level, turning on the fourth transistor Q10. At this time, the first switch Q1 is in the on state, and the output voltage of battery 102 is output to pin 1 of the first chip U1 through the first switch Q1 and the fourteenth resistor R14. The output voltage of battery 102 is detected through pin 1 of the first chip U1. The fourth transistor Q10 is an NPN transistor.

[0083] In some embodiments, such as Figure 3 As shown, the switching module 15 may include a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a seventh capacitor C7, a second switching transistor Q2, a third switching transistor Q3, and a second Zener diode D2; one end of the sixteenth resistor R16 is connected to the battery 102, and the other end of the sixteenth resistor R16 is connected to one end of the first fuse F1. The other end of the first fuse F1 is connected to one end of the seventeenth resistor R17 and the source of the second switching transistor Q2. The other end of the seventeenth resistor R17 is connected to the gate of the second switching transistor Q2. The gate of the second switching transistor Q2 is connected to one end of the eighteenth resistor R18. The eighteenth resistor R18... The other end is connected to the drain of the third switch Q3. The gate of the third switch Q3 is connected to pin 13 of the first chip U1. The source of the third switch Q3 is grounded. One end of the nineteenth resistor R19 is connected to the gate of the third switch Q3. The other end of the nineteenth resistor R19 is connected to the source of the third switch Q3. One end of the seventh capacitor C7 is connected to the drain of the second switch Q2 along with the cathode of the second Zener diode D2. The other end of the seventh capacitor C7 is grounded along with the anode of the second Zener diode D2. The cathode of the second Zener diode D2 is the positive output terminal of the switching module 15, and the anode of the second Zener diode D2 is the negative output terminal of the switching module 15.

[0084] Specifically, the second switch Q2 is an N-type MOSFET (N-channel metal-oxide-semiconductor field-effect transistor), and the third switch Q3 is a P-type MOSFET. When the switch module 15 needs to be closed, a high-level signal is output from pin 13 of the first chip U1 to the second switch Q2, turning it on. This, in turn, turns on the third switch Q3, and the switch module 15 is in a closed state. When the switch module 15 needs to be opened, a low-level signal is output from pin 13 of the first chip U1 to the second switch Q2, turning it off. This, in turn, turns on the third switch Q3, and the switch module 15 is in an open state.

[0085] In some embodiments, such as Figure 7 As shown, the charging and discharging module 20 may include a twentieth resistor R20, a twenty-first resistor R21, and an eighth capacitor C8; one end of the twentieth resistor R20 is connected to the second main control module 18, one end of the twenty-first resistor R21 and one end of the eighth capacitor C8 are connected to the other end of the twentieth resistor R20, and the other end of the twenty-first resistor R21 and the other end of the eighth capacitor C8 are grounded together.

[0086] Specifically, the twentieth resistor R20, the twenty-first resistor R21, and the eighth capacitor C8 constitute an RC (resistor-capacitor) charging and discharging circuit. When the switch module 15 is closed, the voltage input module 16 outputs voltage to the second main control module 18, which is powered on. At this time, the second main control module 18 outputs a first voltage, which charges the eighth capacitor C8 through the twentieth resistor R20. When the switch module 15 is open, the voltage input module 16 is de-energized, and the second main control module 18 is also de-energized. At this time, the eighth capacitor C8 begins to discharge.

[0087] In this embodiment, when the temperature of battery 102 is too high or the output voltage of battery 102 is too low, the second main control module 18 controls the switch module 15 to open. At this time, the eighth capacitor C8 begins to discharge. After the switch module 15 is opened due to the excessively high temperature or low output voltage of battery 102, the second main control module 18 controls the switch module 15 to close again. The second main control module 18 detects the voltage value at the connection terminal with the twentieth resistor R20 and determines the reason for the switch module 15 opening based on the detected voltage value. When the second voltage value is greater than the first preset value, it indicates that the switch module 15 has opened and closed within a short period of time. The reason for the switch module 15 opening is that the output voltage of the power supply module 10 is too low and / or the temperature is too high. The first preset value is preset in the second main control module 18.

[0088] For example, the 17th pin of the second chip U2 outputs 3.3V DC, the eighth capacitor C8 is full of electricity with a capacitance of 3.3V, and the first preset value can be preset to 1.5V. After the first chip U1 controls the switch module 15 to be disconnected, the eighth capacitor C8 starts to discharge, and at the same time the first chip U1 controls the switch module 15 to be closed. After the switch module 15 is closed, the voltage at the end of the twentieth resistor R20 away from the eighth capacitor C8 is detected through the 17th pin of the second chip. When the voltage is greater than 1.5V, it is determined that the reason why the switch module 15 is disconnected is that the output voltage of the power supply module 10 is too low and / or the temperature is too high.

[0089] In some embodiments, as Figure 8As shown, the voltage input module 16 can include a second fuse F2, a first bidirectional voltage stabilizing diode D3, a second bidirectional voltage stabilizing diode D4, a ninth capacitor C9, a tenth capacitor C10, a first diode D5, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a third voltage stabilizing diode D6, a first field effect transistor Q5, a second field effect transistor Q6, a fifth transistor switch unit, and a first filter unit; one end of the second fuse is connected to the output end of the switch module 15, the other end of the second fuse F2 is connected to the first pin of the first field effect transistor Q5, the first pin, the second pin, the fourth pin, and the fifth pin of the first field effect transistor Q5 are connected, one end of the first bidirectional voltage stabilizing diode D3 and one end of the ninth capacitor C9 are connected to the other end of the second fuse, the other end of the first bidirectional voltage stabilizing diode D3 and the other end of the ninth capacitor C9 are grounded, the negative electrode of the first diode D5 is connected to the connection path of the other end of the second fuse and the first pin of the first field effect transistor, the positive electrode of the first diode D5 is connected to one end of the twenty-second resistor R22, the other end of the twenty-second resistor R22 is connected to one end of the twenty-third resistor R23, one end of the twenty-third resistor R23 is also connected to the third pin of the first field effect transistor Q5, the other end of the twenty-third resistor R23 is grounded, one end of the twenty-fourth resistor R24 is connected to one end of the twenty-third resistor R23, the other end of the twenty-fourth resistor R24 is connected to the positive electrode of the third voltage stabilizing diode D6, the negative electrode of the third voltage stabilizing diode D6 is connected to the sixth pin of the first field effect transistor Q5, one end of the tenth capacitor C10 is connected to the sixth pin of the first field effect transistor Q5, the other end of the tenth capacitor C10 is grounded; the first pin, the second pin, the fourth pin, and the fifth pin of the second field effect transistor Q6 are connected, the third pin of the second field effect transistor Q6 is connected to one end of the tenth capacitor C10, one end of the tenth capacitor C10 is also connected to the second voltage stabilizing module 17, the other end of the tenth capacitor C10 is grounded, the first filter unit is connected to the fifth pin of the second field effect transistor Q6, one end of the second bidirectional voltage stabilizing diode D4 and one end of the twenty-fifth resistor R25 are connected to the third pin of the second field effect transistor Q6, the other end of the twenty-fifth resistor R25 and one end of the twenty-sixth resistor R26 are connected, one end of the twenty-sixth resistor R26 is also connected to the sixth pin of the second field effect transistor Q6, the other end of the twenty-sixth resistor R26 is connected to the third end of the fifth transistor switch unit, the second end of the fifth transistor switch unit is grounded; one end of the first filter unit connected to the fifth pin of the second field effect transistor Q6 is connected to the LED driving module 19.

[0090] The second main control module 18 can include a second chip U2, a twenty-seventh resistor R27 and an eleventh capacitor C11; a ninth pin of the second chip U2 is connected with one end of the twenty-seventh resistor R27, the other end of the twenty-seventh resistor R27 is connected with the second voltage stabilizing module 17, a sixth pin of the second chip U2 is connected with the second voltage stabilizing module 17, one end of the eleventh capacitor C11 is connected with the sixth pin of the second chip U2, the other end of the eleventh capacitor C11 is grounded, a fourteenth pin of the second chip U2 is connected with the LED driving module 19, and a sixteenth pin of the second chip U2 is connected with the first end of the fifth transistor switch unit.

[0091] Specifically, one end of the second fuse F2 is connected with the negative electrode of the first voltage stabilizing diode D1. The first filter unit can include a twelfth capacitor C12 and a thirteenth capacitor C13, one end of the twelfth capacitor C12 and one end of the thirteenth capacitor C13 are connected with the fifth pin of the second field effect tube Q6. The fifth transistor switch unit includes a fifth transistor Q11, a resistor (the driving resistor of the fifth transistor Q11) is connected in series between the base of the fifth transistor Q11 and the sixteenth pin of the second chip U2, and a resistor is connected in series between the base of the fifth transistor Q11 and the emitter of the fifth transistor Q11, wherein the driving resistor of the fifth transistor Q11 is away from one end of the fifth transistor Q11, the first end of the fifth transistor switch unit, the emitter of the fifth transistor Q11 is the second end of the fifth transistor switch unit, and the collector of the fifth transistor Q11 is the third end of the fifth transistor switch unit; wherein the fifth transistor is an NPN type transistor.

[0092] In the embodiment, the first field effect tube Q5 is in a closed state, when the switch module 15 is closed, the output voltage of the battery 102 is output to the second voltage stabilizing module 17 through the first field effect tube Q5, at this time, the second voltage stabilizing module 17 outputs voltage to the second chip U2, after the second chip U2 is powered on, the sixteenth pin of the second chip U2 outputs high level to the fifth transistor Q11, so that the fifth transistor Q11 is turned on, at this time, the second field effect tube Q6 is also in a turned-on state, then the output voltage of the battery 102 is further output to the LED driving module 19 through the second field effect tube Q6, so that the LED driving module 19 drives the LED module 21. When the temperature of the battery 102 is too high or the output voltage is too low, the fourteenth pin of the first chip U1 controls the signal to the driving module to reduce the output power of the LED module 21.

[0093] Wherein, the model of the first field effect tube Q5 and the second field effect tube Q6 can be CJMP3009; the second chip U2 can be, but is not limited to, EFM8UB10F8G-C-QFN20.

[0094] Further, as shown in FIG. 1, the first voltage stabilizing diode D1 can be connected with the second field effect tube Q6 in parallel, and the second voltage stabilizing diode D2 can be connected with the first field effect tube Q5 in parallel. Figure 8As shown, the second voltage stabilizing module 17 can be a circuit built with the core device of the sixth chip U6, the model of the sixth chip U6 is LY7233M, Figure 8 is a specific circuit diagram of the second voltage stabilizing module 17. Wherein, one end of the tenth capacitor C10 is connected with the second pin of the Schottky diode D10 in the second voltage stabilizing module 17, the ground pin 3 of the Schottky diode D10 is connected with the third pin of the sixth chip U6 through a resistor.

[0095] In the embodiment, the voltage output by the switch module 15 is shunted at one end of the tenth capacitor C10 after the first field effect transistor Q5, one of which is output from the second field effect transistor Q6 to the LED driving module 19, and the other is output to the sixth chip U6 through the Schottky diode D10, and the sixth chip U6 supplies power to the second chip U2, wherein the second pin of the sixth chip U6 is connected with the sixth pin of the second chip U2.

[0096] Further, the control system of the LED module on the vehicle lamp further comprises a program downloading module 22, such as Figure 8 As shown, the fourth pin of the second chip U2 is connected with the eighth pin of the second interface J2 through a resistor; the fifth pin of the second chip U2 is connected with the seventh pin of the second interface J2 through a resistor; the eighth pin of the second chip U2 is connected with the thirteenth pin of the second interface J2, wherein a resistor is connected in series between the eighth pin of the second chip U2 and the thirteenth pin of the second interface J2, a resistor is arranged on the connection path of the eighth pin of the second chip U2, one end of the resistor is connected with the eighth pin of the second chip U2, and the other end of the resistor is grounded; the tenth pin of the second chip U2 is connected with the eleventh pin of the second interface J2; the ninth pin of the second chip U2 is connected with the fifth pin of the second interface J2; the first pin of the Schottky diode D10 is connected with the third pin of the second interface J2.

[0097] In the embodiment, the second interface J2 is a USB interface. Wherein, when downloading the program to the second chip U2, the second interface J2 is connected with the device for downloading the program (such as a computer, a notebook computer, a tablet computer and other terminal devices).

[0098] Further, the LED driving module 19 can be a circuit built with a chip with the model of SY7203 as the core device, such as Figure 11 As shown, it is a specific circuit diagram of the LED driving module 19. Of course, the LED driving module 19 can also be a circuit built with other chips, which is not limited here, and the specific circuit of the LED driving module 19 can be determined by the person skilled in the art according to the actual needs. The LED driving module 19 can be connected with the LED module 21 (such as Figure 12 As shown), through the LED module 21, the LED module 21 shown in Figure 12 can be driven.

[0099] Further, the control system of the LED module on the vehicle lamp further comprises a second state display module 24, as shown in Figure 10 Fig. 4 is a circuit diagram of the second state display module 24, wherein when the second state display module 24 is connected with the second chip U2, a third interface J3 can be set on the second chip U2, wherein the first pin of the third interface J3 is connected with the 18th pin of the second chip U2 through a resistor, the second pin of the third interface J3 is connected with the 10th pin of the second chip U2 through a resistor, the third pin of the third interface J3 is connected with the second pin of the sixth chip U6 through two resistors which are connected in series, and a filter capacitor is arranged between the two resistors which are connected in series on the connection path of the third pin of the third interface J3 and the second pin of the sixth chip U6. When the second state display module 24 is connected with the second chip U2, the fourth interface J4 on the second state display module 24 can be connected with the third interface J3, so as to realize the connection of the second state display module 24 with the second chip U2, wherein the second chip U2 can be controlled through the second button according to the light-on condition of the second state display module 24, such as controlling the brightness of the LED module 21 through the second button.

[0100] In some embodiments, the first switch tube Q1, the third switch tube Q3 and the fourth switch tube Q4 are P-type MOS tubes (P-channel metal oxide semiconductor field effect transistor, Positive Channel Metal Oxide Semiconductor).

[0101] In some embodiments, as shown in Figure 13 Fig. 5, the application further provides a control method of the control system of the LED module on the vehicle lamp, the control method comprising the steps of:

[0102] S100, acquiring the temperature of the power supply module and outputting a temperature detection value;

[0103] S200, acquiring the output voltage of the power supply module and outputting a voltage detection value;

[0104] S300, when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, controlling the switch module to be closed, and after the switch module is controlled to be closed when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, re-controlling the switch module to be closed, wherein the switch module is in a charging state or a full-charge state when the switch module is closed, and the switch module is in a discharging state when the switch module is opened;

[0105] S400, outputting a first voltage to the charge-discharge module to charge when the switch module is closed;

[0106] S500, detecting the second voltage value output by the charging and discharging module after each closure of the switch module, and controlling the LED driving module to reduce the output power of the LED module when the second voltage value is greater than a first preset value.

[0107] In this embodiment, the temperature of the power supply module can be detected by the temperature detection module, and the temperature detection value of the power supply module detected by the temperature detection module can be acquired by the first main control module. The output voltage of the power supply module can be detected by the voltage detection module, and the output voltage of the power supply module detected by the voltage detection module can be acquired by the first main control module.

[0108] When the temperature detection value acquired by the first main control module is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, and after the first main control module controls the switch module to be turned off, and when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, the first main control module controls the switch module to be closed again. When the switch module is closed each time, the second voltage value output by the charging and discharging module is detected by the second main control module. Since the charging and discharging module is in a discharging state when the switch module is turned off, the second voltage value output by the charging and discharging module is related to the disconnection time of the switch module. The longer the disconnection time of the switch module, the smaller the second voltage value output by the charging and discharging module. The shorter the disconnection time of the switch module, the greater the second voltage value output by the charging and discharging module. Since the switch module is turned off and then closed again when the voltage of the power supply module is too low and / or the temperature is too high, the process time is short. Therefore, the reason for the disconnection of the switch module can be determined according to the detected second voltage value output by the charging and discharging module. When the second voltage value is greater than the first preset value, it indicates that the switch module is turned off and then closed again in a short time. Therefore, the reason for the disconnection of the switch module is that the output voltage of the power supply module is too low and / or the temperature is too high. The second main control module further controls the LED driving module to reduce the output power of the LED module. The control system of the LED module on the vehicle lamp does not need to set a power carrier generating device at the transmitting end of the power supply network, and does not need to set a demodulation circuit device at the receiving end of the power supply network. The structure is simple, and the cost is low.

[0109] In some embodiments, the present application also provides a vehicle lamp, which can include an LED module and a control system of the LED module on the vehicle lamp as described above, wherein the LED module is connected with the LED driving module in the control system of the LED module on the vehicle lamp.

[0110] It should be noted that the control method of the LED module on the vehicle lamp is similar to the description of the vehicle lamp embodiment and the control system of the LED module on the vehicle lamp, and has the same beneficial effects as the control system of the LED module on the vehicle lamp. For the control method of the LED module on the vehicle lamp and the technical details not disclosed in the vehicle lamp embodiment, please refer to the description of the control system of the LED module on the vehicle lamp.

[0111] In summary, the present application provides a control system, a control method and a vehicle lamp for an LED module on a vehicle lamp, which has the following beneficial effects:

[0112] In the application of the control system, when the output voltage of the power supply module is too low and / or the temperature is too high, the switch module will be opened, and after the first main control module controls the switch module to be closed, the first main control module controls the switch module to be closed again when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value. When the switch module is closed each time, the second voltage value output by the charge-discharge module is detected by the second main control module. Since the charge-discharge module is in a discharging state when the switch module is opened, the second voltage value output by the charge-discharge module is related to the opening time of the switch module. The longer the opening time of the switch module, the smaller the second voltage value output by the charge-discharge module. The shorter the opening time of the switch module, the greater the second voltage value output by the charge-discharge module. Since the switch module will be closed again after being opened when the output voltage of the power supply module is too low and / or the temperature is too high, the process time is relatively short. Therefore, the reason for the opening of the switch module can be determined according to the detected second voltage value output by the charge-discharge module. When the second voltage value is greater than the first preset value, it means that the switch module has been opened and closed for a short time, and the reason for the opening of the switch module is that the output voltage of the power supply module is too low and / or the temperature is too high. The second main control module further controls the LED driving module to reduce the output power of the LED module. The control system of the LED module on the vehicle lamp does not need to set a power carrier generating device at the transmitting end of the power network, and does not need to set a demodulation circuit device at the receiving end of the power network, so the structure is simple and the cost is low.

[0113] It should be understood that the above embodiments only express the preferred embodiments of the present application, which are described in detail, but cannot be construed as limiting the scope of the patent of the present application; it should be noted that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and some modifications and improvements can be made, which are all within the scope of protection of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application should be covered by the claims of the present application.

Claims

1. A control system for LED modules on a vehicle light, characterized by, The application relates to a power supply module, a switch module, a temperature detection module, a voltage detection module, a first voltage stabilizing module, a first main control module, a voltage input module, an LED driving module, a charge-discharge module, a second voltage stabilizing module and a second main control module. The application relates to a power supply module, a switch module, a temperature detection module, a voltage detection module, a first voltage stabilizing module, a first main control module, a voltage input module, an LED driving module, a charge-discharge module, a second voltage stabilizing module and a second main control module. The power supply module comprises a battery and a USB access unit. The battery is connected with the first voltage stabilizing module, the temperature detection module, the voltage detection module, the switch module and the USB access unit. The USB access unit is connected with the first main control module and the first voltage stabilizing module. The first main control module comprises a first chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a first voltage stabilizing diode, a first transistor switch unit, a second transistor switch unit and a third transistor switch unit. The first main control module is used for acquiring the temperature detection value and the voltage detection value, and when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the first main control module is further used for controlling the switch module to be turned off, and after the first main control module controls the switch module to be turned off when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, the first main control module is further used for re-controlling the switch module to be closed. The voltage input module is connected with the output end of the switch module and is used for accessing the voltage output by the output end of the switch module. The LED driving module is connected with the voltage input module. The charge-discharge module is in a charging state or a fully-charged state when the switch module is closed, and is in a discharging state when the switch module is turned off. The second voltage stabilizing module is connected with the voltage input module. The second main control module is connected with the LED driving module, the second voltage stabilizing module and the charge-discharge module.

2. The control system for LED modules on a vehicle lamp of claim 1, wherein, The second main control module is used for outputting a first voltage to the charge-discharge module to charge when the switch module is closed, and is used for detecting a second voltage value output by the charge-discharge module each time the switch module is closed, wherein when the second voltage value is greater than a first preset value, the second main control module is further used for controlling the LED driving module to reduce the output power of the LED module. The first main control module comprises a first chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a first voltage stabilizing diode, a first transistor switch unit, a second transistor switch unit and a third transistor switch unit. The first main control module is used for acquiring the temperature detection value and the voltage detection value, and when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the first main control module is further used for controlling the switch module to be turned off, and after the first main control module controls the switch module to be turned off when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, the first main control module is further used for re-controlling the switch module to be closed.

3. The control system for LED modules on a vehicle lamp of claim 2, wherein, The voltage input module is connected with the output end of the switch module and is used for accessing the voltage output by the output end of the switch module. The LED driving module is connected with the voltage input module. The charge-discharge module is in a charging state or a fully-charged state when the switch module is closed, and is in a discharging state when the switch module is turned off. The second voltage stabilizing module is connected with the voltage input module. The second main control module is connected with the LED driving module, the second voltage stabilizing module and the charge-discharge module. The second main control module is used for outputting a first voltage to the charge-discharge module to charge when the switch module is closed, and is used for detecting a second voltage value output by the charge-discharge module each time the switch module is closed, wherein when the second voltage value is greater than a first preset value, the second main control module is further used for controlling the LED driving module to reduce the output power of the LED module. The first main control module comprises a first chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a first voltage stabilizing diode, a first transistor switch unit, a second transistor switch unit and a third transistor switch unit. The first main control module is used for acquiring the temperature detection value and the voltage detection value, and when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, the first main control module is further used for controlling the switch module to be turned off, and after the first main control module controls the switch module to be turned off when the temperature detection value is greater than the first temperature value and / or the voltage detection value is lower than the first voltage value, the first main control module is further used for re-controlling the switch module to be closed. The first chip is connected with the voltage detection module through the first pin and the eighteenth pin, connected with the first resistor through the second pin, connected with the first voltage stabilizing module through the other end of the first resistor, connected with the USB access unit through the second pin, grounded through the third pin, connected with the second resistor through the fourth pin, connected with the USB access unit through the other end of the second resistor, connected with the third resistor through the fifth pin, connected with the USB access unit through the other end of the third resistor, connected with the first voltage stabilizing module through the sixth pin and the seventh pin, connected with the fifth resistor through the eighth pin, grounded through the other end of the fifth resistor, connected with the sixth resistor through the ninth pin, connected with the first voltage stabilizing module through the other end of the sixth resistor, connected with the USB access unit through the tenth pin, connected with the eighth resistor through the eleventh pin, connected with the first voltage stabilizing module through the other end of the eighth resistor, grounded through the twelfth pin, connected with the switch module through the thirteenth pin, connected with the USB access unit through the fourteenth pin, connected with the ninth resistor through the fifteenth pin, connected with the first voltage stabilizing module through the other end of the ninth resistor, connected with the USB access unit through the fifteenth pin, connected with the USB access unit through the nineteenth pin, and connected with the temperature detection module through the twentieth pin. One end of the fourth resistor is connected with the USB access unit, the other end of the fourth resistor is connected with the first end of the first transistor switch unit, the second end of the first transistor switch unit is grounded, the third end of the first transistor switch unit is connected with the first end of the second transistor switch unit, the second end of the second transistor switch unit is connected with one end of the fifth resistor, the second transistor switch unit is connected with the first voltage stabilizing module, the first end of the third transistor switch unit is connected with the tenth pin of the first chip, the second end of the third transistor switch unit is grounded, one end of the second capacitor is connected with the third end of the third transistor switch unit, the other end of the second capacitor is connected with the negative electrode of the first voltage stabilizing diode and one end of the seventh resistor, the positive electrode of the first voltage stabilizing diode is grounded, the other end of the seventh resistor is connected with the USB access unit.

4. The control system for LED modules on a vehicle lamp of claim 3, wherein, The temperature detection module comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a fourth capacitor, a fifth capacitor and a first thermistor. One end of the tenth resistor and one end of the fourth capacitor are connected to a first power supply end, the common connection end of the tenth resistor and the fourth capacitor is also connected to the USB access unit, the other end of the fourth capacitor is grounded, the other end of the tenth resistor is connected to one end of the eleventh resistor, the other end of the eleventh resistor is connected to one end of the twelfth resistor, the other end of the twelfth resistor is grounded, the connection end of the eleventh resistor and the tenth resistor is also connected to the first thermistor, the connection end of the eleventh resistor and the twelfth resistor is connected to the 20th pin of the first chip, one end of the fifth capacitor is connected to the connection path of the eleventh resistor and the first thermistor, the other end of the fifth capacitor is grounded.

5. The control system for LED modules on a vehicle lamp of claim 4, wherein, The voltage detection module comprises a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a first switch tube, a fourth transistor switch unit and a sixth capacitor. One end of the thirteenth resistor is connected to the battery, the other end of the thirteenth resistor is connected to the 18th pin of the first chip through the fourth transistor switch unit, the gate of the first switch tube is connected to the other end of the thirteenth resistor, the source of the first switch tube is connected to one end of the thirteenth resistor, the drain of the first switch tube is connected to one end of the fourteenth resistor, the other end of the fourteenth resistor is connected to one end of the fifteenth resistor, the other end of the fifteenth resistor is grounded, the other end of the fourteenth resistor is also connected to the 1st pin of the first chip, one end of the sixth capacitor is connected to the connection path of the fourteenth resistor and the 1st pin of the first chip, the other end of the sixth capacitor is grounded.

6. The control system for LED modules on a vehicle lamp of claim 5, wherein, The switch module comprises a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a seventh capacitor, a second switch tube, a third switch tube, a first fuse and a second voltage stabilizing diode. One end of the sixteenth resistor is connected to the battery, the other end of the sixteenth resistor is connected to one end of the first fuse, the other end of the first fuse is connected to one end of the seventeenth resistor and the source of the second switch tube, the other end of the seventeenth resistor is connected to the gate of the second switch tube, the gate of the second switch tube is connected to one end of the eighteenth resistor, the other end of the eighteenth resistor is connected to the drain of the third switch tube, the gate of the third switch tube is connected to the 13th pin of the first chip, the source of the third switch tube is grounded, one end of the nineteenth resistor is connected to the gate of the third switch tube, the other end of the nineteenth resistor is connected to the source of the third switch tube, one end of the seventh capacitor is connected to the drain of the second switch tube through the common connection of the negative electrode of the second voltage stabilizing diode, the other end of the seventh capacitor is grounded through the common connection of the positive electrode of the first voltage stabilizing diode. The negative electrode of the second voltage stabilizing diode is the positive output end of the switch module, and the positive electrode of the second voltage stabilizing diode is the negative output end of the switch module.

7. The control system for LED modules on a vehicle lamp of claim 1, wherein, The charge and discharge module comprises a twentieth resistor, a twenty-first resistor and an eighth capacitor. One end of the twentieth resistance is connected with the second master control module, one end of the twenty-first resistance and one end of the eighth capacitor are connected with the other end of the twentieth resistance, and the other end of the twenty-first resistance is grounded.

8. The control system for LED modules on a vehicle lamp of claim 7, wherein, The voltage input module comprises a second fuse, a first bidirectional voltage stabilizing diode, a second bidirectional voltage stabilizing diode, a ninth capacitor, a tenth capacitor, a first diode, a twenty-second resistance, a twenty-third resistance, a twenty-fourth resistance, a twenty-fifth resistance, a twenty-sixth resistance, a third voltage stabilizing diode, a first diode, a first field effect transistor, a second field effect transistor, a fifth transistor switch unit and a first filter unit; One end of the second fuse is connected with the output end of the switch module, the other end of the second fuse is connected with the first pin of the first field effect transistor, the first pin, the second pin, the fourth pin and the fifth pin of the first field effect transistor are connected, one end of the first bidirectional voltage stabilizing diode is connected with one end of the ninth capacitor and the other end of the second fuse, the other end of the first bidirectional voltage stabilizing diode is grounded, the negative electrode of the first diode is connected to the connection path of the other end of the second fuse and the first pin of the first field effect transistor, the positive electrode of the first diode is connected with one end of the twenty-second resistance, the other end of the twenty-second resistance is connected with one end of the twenty-third resistance, one end of the twenty-third resistance is also connected with the third pin of the first field effect transistor, the other end of the twenty-third resistance is grounded, one end of the twenty-fourth resistance is connected with one end of the twenty-third resistance, the other end of the twenty-fourth resistance is connected with the positive electrode of the third voltage stabilizing diode, the negative electrode of the third voltage stabilizing diode is connected with the sixth pin of the first field effect transistor, one end of the tenth capacitor is connected with the sixth pin of the first field effect transistor, and the other end of the tenth capacitor is grounded. The first pin, the second pin, the fourth pin and the fifth pin of the second field effect transistor are connected, the third pin of the second field effect transistor is connected with one end of the tenth capacitor, one end of the tenth capacitor is also connected with the second voltage stabilizing module, the other end of the tenth capacitor is grounded, the first filter unit is connected with the fifth pin of the second field effect transistor, one end of the second bidirectional voltage stabilizing diode is connected with one end of the twenty-fifth resistance and the third pin of the second field effect transistor, the other end of the second bidirectional voltage stabilizing diode is connected with the other end of the twenty-fifth resistance and one end of the twenty-sixth resistance, one end of the twenty-sixth resistance is also connected with the sixth pin of the second field effect transistor, the other end of the twenty-sixth resistance is connected with the third end of the fifth transistor switch unit, and the second end of the fifth transistor switch unit is grounded. The end of the first filter unit connected with the fifth pin of the second field effect transistor is connected with the LED driving module. The second master control module comprises a second chip, a twenty-seventh resistance and an eleventh capacitor. The 9th pin of the second chip is connected with one end of the 27th resistor, the other end of the 27th resistor is connected with the second voltage stabilizing module, the 6th pin of the second chip is connected with the second voltage stabilizing module, one end of the 11th capacitor is connected with the 6th pin of the second chip, the other end of the 11th capacitor is grounded, the 14th pin of the second chip is connected with the LED driving module, and the 16th pin of the second chip is connected with the 1st end of the fifth transistor switch unit.

9. A control method of a control system for an LED module of a vehicle lamp according to any one of claims 1 to 8, characterized by, The control method comprises: acquiring the temperature of the power supply module and outputting a temperature detection value; acquiring the output voltage of the power supply module and outputting a voltage detection value; when the temperature detection value is greater than a first temperature value and / or the voltage detection value is lower than a first voltage value, controlling the switch module to be closed, and after the switch module is controlled to be closed, re-controlling the switch module to be closed, wherein the switch module is in a charging state or a full-charge state when the switch module is closed, and the switch module is in a discharging state when the switch module is opened; outputting a first voltage to the charge-discharge module when the switch module is closed; detecting a second voltage value output by the charge-discharge module after each time the switch module is closed, and when the second voltage value is greater than a first preset value, controlling the LED driving module to reduce the output power of the LED module.

10. A vehicle lamp characterized by comprising: comprises: an LED module and a control system of the LED module on the vehicle lamp according to any one of claims 1-8, wherein the LED module is connected with the LED driving module in the control system of the LED module on the vehicle lamp.

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