Control circuit of automobile LED daytime running lamp, position lamp and steering lamp
By designing the control circuit of automotive LED daytime running lights, position lights and turn signals, and using BOOST constant voltage circuit and linear constant current circuit, the problem of high coordination cost between MCU and software in the existing technology is solved, the MCU-free software lighting function is realized, and the production cost is reduced.
Patent Information
- Application Number
- CN202421325814.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In the prior art, the control of LED daytime running lights, position lights and turn signals requires the MCU and software, which leads to high application costs. When a certain LED light bead fails, the remaining light beads cannot be lit independently, which increases the system complexity.
A control circuit for daytime running lights, position lights and turn signals of automobile LEDs is designed, using BOOST constant voltage circuit and linear constant current circuit. The design of series LED lamp beads realizes the function of not lighting up when one of the LED lamp beads fails, and costs are reduced by sharing a constant voltage BSOOT circuit.
It enables the LED light to be turned on without matching MCU and software, simplifying the production process, reducing production costs, and ensuring that when a certain LED light bead fails, the remaining light beads will automatically turn off, avoiding system complexity.
Smart Images
Figure CN222674538U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile lamp control, and in particular relates to a control circuit for an automobile LED daytime running lamp, a position lamp and a turn lamp. Background Art
[0002] The design requirements of LED daytime running lights, position lights and turn signals of some models are: daytime running lights and position lights share 10 white light LEDs; turn signals have 10 yellow light LEDs. The position lights, daytime running lights and turn signal functions are activated by independent 9-16V POWER lines of the vehicle body. If one of the turn signal LEDs fails due to an open circuit, the remaining turn signal LEDs need to be turned off. If one of the daytime running lights or position lights LEDs fails due to an open circuit, the remaining daytime running lights or position lights LEDs need to be turned off.
[0003] According to the requirements of the optical design of the car lights, when the daytime running lights are turned on, all 10 white light LEDs require a current of 400mA, and the failure mode of the daytime running lights is one off and all are off (when one of the LEDs fails due to an open circuit, the other 9 LEDs are also required to be unable to light up); when the position lights are turned on, all 10 white light LEDs require a current of 40mA, and the failure mode of the position lights is also one off and all are off; when the turn signals are turned on, all 10 white light LEDs require a current of 400mA, and the failure mode of the turn signals is also one off and all are off.
[0004] In the prior art, the control of LED daytime running lights, position lights and turn signals requires the cooperation of MCU and software, resulting in high application costs. Therefore, there is an urgent need for a control circuit for automotive LED daytime running lights, position lights and turn signals, which has the effect of simplifying the production process and reducing production costs. Utility Model Content
[0005] In order to solve the problems raised in the above background technology, the utility model provides a control circuit for automotive LED daytime running lights, position lights and turn lights, which has the characteristics of simplifying the production process and reducing the production cost.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control circuit for an automotive LED daytime running light, a position light and a turn signal light, comprising a BOOST constant voltage circuit and a connector J1, wherein the BOOST constant voltage circuit comprises a BOOST IC, wherein pin 1 of the BOOST IC is respectively connected to pins 1, 2 and 3 of the connector J1, and pin 1 of the connector J1 is also respectively connected to pin 6 of the BOOSTIC and one end of an inductor L1, wherein the other end of the inductor L1 is connected to the positive end of a diode D2, and the negative end of the diode D2 is respectively connected to the turn signal circuit and the positive ends of the daytime running light and position light circuits, wherein the negative end of the turn signal circuit is connected to a first linear constant current circuit, and the negative ends of the daytime running light and position light circuits are connected to a second linear constant current circuit, wherein the first linear constant current circuit comprises a triode The transistor Q3, the collector of the transistor Q3 is connected to the negative terminal of the turn signal circuit, the emitter of the transistor Q3 is connected to one end of the resistor R10 and the resistor R11 respectively, the other end of the resistor R10 is connected to the base of the transistor Q5, the base of the transistor Q3 is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the resistor R6 and the collector of the transistor Q5 respectively, the emitter of the transistor Q5 and the other end of the resistor R11 are connected to the ground terminal, the other end of the resistor R6 is connected to the 3rd pin of the connector J1, and the second linear constant current circuit package The transistor Q2 is included, the collector of the transistor Q2 is connected to the negative end of the daytime running light and the position light circuit, the base of the transistor Q2 is connected to one end of the resistor R7, the other end of the resistor R7 is respectively connected to one end of the resistor R5 and the collector of the transistor Q4, the other end of the resistor R5 is connected to pin 1 of the connector J1, the base of the transistor Q4 is connected to one end of the resistor R9, the other end of the resistor R9 and the emitter of the transistor Q2 are respectively connected to one end of the resistor R12 and the resistor R13, the other end of the resistor R12 is connected to the drain of the MOS tube Q7 The gate of the MOS tube Q7 is connected to one end of the resistor R15 and the resistor R16 respectively, the other end of the resistor R15 is connected to pin 2 of the connector J1, the other end of the resistor R13 is connected to the drain of the MOS tube Q6, the gate of the MOS tube Q6 is connected to one end of the resistor R14 and the resistor R17 respectively, the other end of the resistor R14 is connected to pin 1 of the connector J1, the source of the MOS tube Q6, the other end of the resistor R17, the source of the MOS tube Q7, the other end of the resistor R16 and the emitter of the triode Q4 are all connected to the ground terminal.
[0007] In order to realize the function that when one of the LED lamp beads fails, the remaining nine LED lamp beads will not light up, further, the turn signal circuit includes LED lamp beads D5, LED lamp beads D7, LED lamp beads D11, LED lamp beads D14, LED lamp beads D16, LED lamp beads D18, LED lamp beads D20, LED lamp beads D22, LED lamp beads D24 and LED lamp beads D26 connected in series in sequence. The daytime running light and position light circuit includes LED lamp beads D4, LED lamp beads D8, LED lamp beads D12, LED lamp beads D15, LED lamp beads D17, LED lamp beads D19, LED lamp beads D21, LED lamp beads D23, LED lamp beads D25 and LED lamp beads D28 connected in series in sequence.
[0008] In order to prevent the power supply from being connected in reverse, a diode D27 is further connected between the resistor R6 and the 3rd pin of the connector J1, wherein the positive terminal of the diode D27 is connected to the 3rd pin of the connector J1, and the negative terminal of the diode D27 is connected to the resistor R6. A diode D29 is connected between the resistor R15 and the 2nd pin of the connector J1, wherein the positive terminal of the diode D29 is connected to the 2nd pin of the connector J1, and the negative terminal of the diode D29 is connected to the resistor R15. A diode D30 is connected between the resistor R14 and the 1st pin of the connector J1, wherein the positive terminal of the diode D30 is connected to the 1st pin of the connector J1, and the negative terminal of the diode D30 is connected to the resistor R14.
[0009] In order to protect the gates of the MOS transistors Q6 and Q7, further, the gate of the MOS transistor Q6 is also connected to one end of the voltage regulator tube D32, and the gate of the MOS transistor Q7 is also connected to one end of the voltage regulator tube D31, and the other ends of the voltage regulator tubes D32 and D31 are both connected to the ground end.
[0010] In order to share a constant voltage BSOOT circuit and reduce costs, further, pin 1 of connector J1 is connected to the positive terminal of diode D1, the negative terminal of diode D1 is connected to pin 1 of BOOST IC, pin 2 of connector J1 is connected to the positive terminal of diode D6, the negative terminal of diode D6 is connected to pin 1 of BOOST IC, pin 3 of connector J1 is connected to the positive terminal of diode D10, and the negative terminal of diode D10 is connected to pin 1 of BOOST IC.
[0011] For electrostatic protection and EMI filtering, further, pin 1 of connector J1 is connected to one end of capacitor C2, pin 2 of connector J1 is connected to one end of capacitor C3, pin 3 of connector J1 is connected to one end of capacitor C4, and the other ends of capacitors C1, C2 and C3 are respectively connected to the ground.
[0012] In order to protect the power line from positive and negative pulse impacts, further, pin 1 of connector J1 is connected to one end of TVS tube D3, pin 2 of connector J1 is connected to one end of TVS tube D9, pin 3 of connector J1 is connected to one end of TVS tube D13, and the other ends of TVS tube D3, TVS tube D9 and TVS tube D13 are respectively connected to the ground end.
[0013] In order to serve as loop compensation resistors and capacitors and filtering for the BOOST IC, further, pin 7 of the BOOST IC is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the capacitor C5, pin 5 of the BOOST IC is connected to one end of the capacitor C6, and the other ends of the capacitors C5 and C6 are respectively connected to the ground.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] 1. When POWER_TI is powered, the transistor Q3 is turned on, and a current of 400mA flows through the resistor R11 to light up the turn signal lamp. When POWER_DRL is powered, the MOS tube Q7 is turned on, the transistor Q2 is turned on, and a current of 400mA flows through the resistor R12 and the MOS tube Q7 to light up the daytime running light. When POWER_PL is powered, the MOS tube Q6 is turned on, the transistor Q2 is turned on, and a current of 40mA flows through the resistor R13 and the MOS tube Q6 to light up the position lamp. The utility model does not need to be matched with MCU and software, and has the characteristics of simplifying the production process and reducing the production cost.
[0016] 2. The turn signal light circuit of the utility model comprises LED lamp beads D5, D7, D11, D14, D16, D18, D20, D22, D24 and D26 connected in series in sequence, and the daytime running light and position light circuit comprises LED lamp beads D4, D8, D12, D15, D17, D19, D21, D23, D25 and D28 connected in series in sequence, so as to realize the function that when one of the LED lamp beads fails, the remaining nine LED lamp beads will not light up;
[0017] 3. The utility model is provided with diodes D27, D29 and D30 to prevent the reverse connection of the power supply. Since the daytime running lights, position lights and turn lights will not be powered at the same time, the power input lines of the daytime running lights, position lights and turn lights are connected together through diodes D1, D6 and D10, so as to share a constant voltage BSOOT circuit to reduce costs. At the same time, diodes D1, D6 and D10 can also prevent the reverse connection of the power supply and prevent the daytime running lights, position lights and turn lights from being powered on mutually.
[0018] 4. The utility model is provided with TVS tube D3, TVS tube D9 and TVS tube D13, which can protect the power line from positive and negative pulse impacts. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0020] Figure 1 A circuit diagram of the utility model;
[0021] Figure 2 This is the circuit diagram of the BOOST constant voltage circuit of the utility model;
[0022] Figure 3 The circuit diagram of the turn signal light circuit of the utility model;
[0023] Figure 4 The circuit diagram of the daytime running light and position light circuit of the utility model;
[0024] Figure 5 A circuit diagram of a first linear constant current circuit of the utility model;
[0025] Figure 6 A circuit diagram of a second linear constant current circuit of the utility model; DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Example 1
[0028] See also Figure 1-6The utility model provides the following technical solutions: a control circuit for an automotive LED daytime running light, a position light and a turn signal light, comprising a BOOST constant voltage circuit and a connector J1, wherein the BOOST constant voltage circuit comprises a BOOST IC, wherein the BOOST IC is preferably a SA22300FA type produced by Silergy, wherein pin 1 of the BOOST IC is respectively connected to pin 1, pin 2 and pin 3 of the connector J1, pin 1 of the connector J1 is also respectively connected to pin 6 of the BOOST IC and one end of an inductor L1, the other end of the inductor L1 is respectively connected to the positive end of a diode D2 and a source of a MOS tube Q1, the gate of the MOS tube Q1 is connected to pin 4 of the BOOST IC, the drain of the MOS tube Q1 is respectively connected to pin 2 of the BOOST IC and one end of a resistor R3, pin 3 of the BOOST IC and the other end of the resistor R3 are connected to a ground terminal, the negative end of the diode D2 is respectively connected to one end of a capacitor C1 and a resistor R1 and the positive end of the turn signal circuit and the daytime running light and position light circuit, the other end of the resistor R1 is connected to the BOOST The 8th pin of the IC is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the ground, the negative end of the turn signal circuit is connected to the first linear constant current circuit, and the negative end of the daytime running light and the position light circuit is connected to the second linear constant current circuit, wherein the first linear constant current circuit includes a transistor Q3, the collector of the transistor Q3 is connected to the negative end of the turn signal circuit, the emitter of the transistor Q3 is respectively connected to one end of the resistor R10 and the resistor R11, the other end of the resistor R10 is connected to the base of the transistor Q5, the base of the transistor Q3 is connected to one end of the resistor R8, the other end of the resistor R8 is respectively connected to one end of the resistor R6 and the collector of the transistor Q5, the emitter of the transistor Q5 and the other end of the resistor R11 are connected to the ground, the other end of the resistor R6 is connected to the 3rd pin of the connector J1, the second linear constant current circuit includes a transistor Q2, the collector of the transistor Q2 The electrode is connected to the negative end of the daytime running light and the position light circuit, the base of the transistor Q2 is connected to one end of the resistor R7, the other end of the resistor R7 is respectively connected to one end of the resistor R5 and the collector of the transistor Q4, the other end of the resistor R5 is connected to pin 1 of the connector J1, the base of the transistor Q4 is connected to one end of the resistor R9, the other end of the resistor R9 and the emitter of the transistor Q2 are respectively connected to one end of the resistor R12 and the resistor R13, the other end of the resistor R12 is connected to the drain of the MOS tube Q7, the gate of the MOS tube Q7 is respectively connected to one end of the resistor R15 and the resistor R16, the other end of the resistor R15 is connected to pin 2 of the connector J1, the other end of the resistor R13 is connected to the drain of the MOS tube Q6, the gate of the MOS tube Q6 is respectively connected to one end of the resistor R14 and the resistor R17, the other end of the resistor R14 is connected to pin 1 of the connector J1,The source of the MOS tube Q6, the other end of the resistor R17, the source of the MOS tube Q7, the other end of the resistor R16 and the emitter of the transistor Q4 are all connected to the ground terminal.
[0029] By adopting the above technical scheme, when POWER_TI supplies power, the utility model turns on the transistor Q3, and a current of 400mA flows through the resistor R11 to light up the turn signal; when POWER_DRL supplies power, the MOS tube Q7 turns on, the transistor Q2 turns on, and a current of 400mA flows through the resistor R12 and the MOS tube Q7 to light up the daytime running light; when POWER_PL supplies power, the MOS tube Q6 turns on, the transistor Q2 turns on, and a current of 40mA flows through the resistor R13 and the MOS tube Q6 to light up the position light. The utility model does not need to be matched with an MCU and software, and has the characteristics of simplifying the production process and reducing the production cost.
[0030] Specifically, the turn signal circuit includes LED lamp beads D5, LED lamp beads D7, LED lamp beads D11, LED lamp beads D14, LED lamp beads D16, LED lamp beads D18, LED lamp beads D20, LED lamp beads D22, LED lamp beads D24 and LED lamp beads D26 connected in series in sequence. The daytime running light and position light circuit includes LED lamp beads D4, LED lamp beads D8, LED lamp beads D12, LED lamp beads D15, LED lamp beads D17, LED lamp beads D19, LED lamp beads D21, LED lamp beads D23, LED lamp beads D25 and LED lamp beads D28 connected in series in sequence.
[0031] By adopting the above technical solution, the function that when one of the LED lamp beads fails, the remaining nine LED lamp beads will not light up is achieved.
[0032] Example 2
[0033] The difference between this embodiment and the first embodiment is that: specifically, a diode D27 is connected between the resistor R6 and the 3rd pin of the connector J1, wherein the positive terminal of the diode D27 is connected to the 3rd pin of the connector J1, and the negative terminal of the diode D27 is connected to the resistor R6. A diode D29 is connected between the resistor R15 and the 2nd pin of the connector J1, wherein the positive terminal of the diode D29 is connected to the 2nd pin of the connector J1, and the negative terminal of the diode D29 is connected to the resistor R15. A diode D30 is connected between the resistor R14 and the 1st pin of the connector J1, wherein the positive terminal of the diode D30 is connected to the 1st pin of the connector J1, and the negative terminal of the diode D30 is connected to the resistor R14.
[0034] The above technical solution is used to prevent the power supply from being connected in reverse.
[0035] Example 3
[0036] The present embodiment is different from the first embodiment in that: specifically, the gate of the MOS tube Q6 is also connected to one end of the voltage regulator tube D32, the gate of the MOS tube Q7 is also connected to one end of the voltage regulator tube D31, and the other ends of the voltage regulator tube D32 and the voltage regulator tube D31 are both connected to the ground end.
[0037] The above technical solution is used to protect the gates of the MOS transistor Q6 and the MOS transistor Q7.
[0038] Example 4
[0039] This embodiment is different from Embodiment 1 in that: specifically, pin 1 of connector J1 is connected to the positive terminal of diode D1, the negative terminal of diode D1 is connected to pin 1 of BOOST IC, pin 2 of connector J1 is connected to the positive terminal of diode D6, the negative terminal of diode D6 is connected to pin 1 of BOOST IC, pin 3 of connector J1 is connected to the positive terminal of diode D10, and the negative terminal of diode D10 is connected to pin 1 of BOOST IC.
[0040] By adopting the above technical solution, since the daytime running lights, position lights and turn lights will not be powered at the same time, the power input lines of the daytime running lights, position lights and turn lights are connected together through diodes D1, D6 and D10, so as to share a constant voltage BSOOT circuit to reduce costs. At the same time, diodes D1, D6 and D10 can also prevent the power supply from being connected in reverse and prevent the daytime running lights, position lights and turn lights from being powered on mutually.
[0041] Example 5
[0042] The difference between this embodiment and Embodiment 1 is that: specifically, pin 1 of connector J1 is connected to one end of capacitor C2, pin 2 of connector J1 is connected to one end of capacitor C3, pin 3 of connector J1 is connected to one end of capacitor C4, and the other ends of capacitor C1, capacitor C2 and capacitor C3 are respectively connected to the ground end.
[0043] The above technical solution is adopted for electrostatic protection and EMI filtering.
[0044] Example 6
[0045] The difference between this embodiment and Embodiment 1 is that: specifically, pin 1 of the connector J1 is connected to one end of the TVS tube D3, pin 2 of the connector J1 is connected to one end of the TVS tube D9, pin 3 of the connector J1 is connected to one end of the TVS tube D13, and the other ends of the TVS tube D3, TVS tube D9 and TVS tube D13 are respectively connected to the ground end.
[0046] The above technical solution is used to protect the power line from positive and negative pulse impacts.
[0047] Example 7
[0048] The present embodiment is different from the first embodiment in that: specifically, pin 7 of the BOOST IC is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the capacitor C5, pin 5 of the BOOST IC is connected to one end of the capacitor C6, and the other ends of the capacitors C5 and C6 are respectively connected to the ground.
[0049] By adopting the above technical solution, the resistor R4 and the capacitor C5 are used as the loop compensation resistor and capacitor of the BOOST IC; the capacitor C6 is a filter capacitor.
[0050] To sum up, when POWER_TI supplies power, the utility model turns on the transistor Q3, and a current of 400mA flows through the resistor R11 to light up the turn signal; when POWER_DRL supplies power, the MOS tube Q7 turns on, the transistor Q2 turns on, and a current of 400mA flows through the resistor R12 and the MOS tube Q7 to light up the daytime running light; when POWER_PL supplies power, the MOS tube Q6 turns on, the transistor Q2 turns on, and a current of 40mA flows through the resistor R13 and the MOS tube Q6 to light up the position light. It does not require MCU and software, and has the characteristics of simplifying the production process and reducing the production cost. The turn signal circuit of the utility model includes LED lamp beads D5, LED lamp beads D7, LED lamp beads D11, LED lamp beads D14, LED lamp beads D16, LED lamp beads D18, LED lamp beads D20, LED lamp beads D22, LED lamp beads D24 and LED lamp beads D26 which are connected in series in sequence. The daytime running light and position light circuit includes LED lamp beads D4, LED lamp beads D8, LED lamp beads D12, LED lamp beads D15, LED lamp beads D17, LED lamp beads D19, LED lamp beads D21, LED lamp beads D23, LED lamp beads D25 and LED lamp beads D28 which are connected in series in sequence, so that when one of the LED lamp beads fails, the remaining nine LED lamp beads will not light up. The utility model is provided with diodes D27, D29 and D30 to prevent the power supply from being connected in reverse. The position lights and turn signals will not be powered at the same time, so the power input lines of the daytime running lights, position lights and turn signals are connected together through diodes D1, D6 and D10, so as to share a constant voltage BSOOT circuit to reduce costs. At the same time, diodes D1, D6 and D10 can also prevent the power supply from being connected in reverse and prevent the power supplies of the daytime running lights, position lights and turn signals from being fed into each other. The utility model is provided with TVS tubes D3, D9 and D13, which can protect the power lines from positive and negative pulse shocks.
[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A control circuit for automotive LED daytime running lights, position lights and turn signals, characterized in that: The invention comprises a BOOST constant voltage circuit and a connector J1, wherein the BOOST constant voltage circuit comprises a BOOST IC, wherein pin 1 of the BOOST IC is respectively connected to pin 1, pin 2 and pin 3 of the connector J1, pin 1 of the connector J1 is also respectively connected to pin 6 of the BOOST IC and one end of an inductor L1, the other end of the inductor L1 is connected to the positive end of a diode D2, the negative end of the diode D2 is respectively connected to the positive end of a turn signal circuit and a daytime running light and a position light circuit, the negative end of the turn signal circuit is connected to a first linear constant current circuit, the negative end of the daytime running light and the position light circuit is connected to a second linear constant current circuit, wherein the first linear constant current circuit comprises a transistor Q3, the collector of the transistor Q3 is connected to the negative end of the turn signal circuit, and the collector of the transistor Q3 is connected to the negative end of the turn signal circuit. The emitter is connected to one end of the resistor R10 and the resistor R11 respectively, the other end of the resistor R10 is connected to the base of the transistor Q5, the base of the transistor Q3 is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the resistor R6 and the collector of the transistor Q5 respectively, the emitter of the transistor Q5 and the other end of the resistor R11 are connected to the ground end, the other end of the resistor R6 is connected to the 3rd pin of the connector J1, the second linear constant current circuit includes a transistor Q2, the collector of the transistor Q2 is connected to the daytime running The base of transistor Q4 is connected to one end of resistor R9, and the other end of resistor R9 and the emitter of transistor Q2 are connected to one end of resistor R12 and one end of resistor R13 respectively. The other end of resistor R12 is connected to the drain of MOS tube Q7. The gate is connected to one end of the resistor R15 and the resistor R16 respectively, the other end of the resistor R15 is connected to pin 2 of the connector J1, the other end of the resistor R13 is connected to the drain of the MOS tube Q6, the gate of the MOS tube Q6 is connected to one end of the resistor R14 and the resistor R17 respectively, the other end of the resistor R14 is connected to pin 1 of the connector J1, the source of the MOS tube Q6, the other end of the resistor R17, the source of the MOS tube Q7, the other end of the resistor R16 and the emitter of the transistor Q4 are all connected to the ground terminal.
2. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: The turn signal circuit includes LED lamp beads D5, LED lamp beads D7, LED lamp beads D11, LED lamp beads D14, LED lamp beads D16, LED lamp beads D18, LED lamp beads D20, LED lamp beads D22, LED lamp beads D24 and LED lamp beads D26 connected in series in sequence, and the daytime running light and position light circuit includes LED lamp beads D4, LED lamp beads D8, LED lamp beads D12, LED lamp beads D15, LED lamp beads D17, LED lamp beads D19, LED lamp beads D21, LED lamp beads D23, LED lamp beads D25 and LED lamp beads D28 connected in series in sequence.
3. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: A diode D27 is connected between the resistor R6 and the pin 3 of the connector J1 , wherein the positive terminal of the diode D27 is connected to the pin 3 of the connector J1 , and the negative terminal of the diode D27 is connected to the resistor R6 .
4. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: A diode D29 is connected between the resistor R15 and the pin 2 of the connector J1 , wherein the positive terminal of the diode D29 is connected to the pin 2 of the connector J1 , and the negative terminal of the diode D29 is connected to the resistor R15 .
5. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: A diode D30 is connected between the resistor R14 and pin 1 of the connector J1 , wherein the positive terminal of the diode D30 is connected to pin 1 of the connector J1 , and the negative terminal of the diode D30 is connected to the resistor R14 .
6. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: The gate of the MOS transistor Q6 is also connected to one end of the voltage regulator tube D32, the gate of the MOS transistor Q7 is also connected to one end of the voltage regulator tube D31, and the other ends of the voltage regulator tube D32 and the voltage regulator tube D31 are both connected to the ground end.
7. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: Pin 1 of the connector J1 is connected to the positive terminal of the diode D1, the negative terminal of the diode D1 is connected to pin 1 of the BOOST IC, pin 2 of the connector J1 is connected to the positive terminal of the diode D6, the negative terminal of the diode D6 is connected to pin 1 of the BOOST IC, pin 3 of the connector J1 is connected to the positive terminal of the diode D10, and the negative terminal of the diode D10 is connected to pin 1 of the BOOST IC.
8. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: Pin 1 of the connector J1 is connected to one end of the capacitor C2, pin 2 of the connector J1 is connected to one end of the capacitor C3, pin 3 of the connector J1 is connected to one end of the capacitor C4, and the other ends of the capacitors C1, C2 and C3 are respectively connected to the ground.
9. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: Pin 1 of the connector J1 is connected to one end of the TVS tube D3, pin 2 of the connector J1 is connected to one end of the TVS tube D9, pin 3 of the connector J1 is connected to one end of the TVS tube D13, and the other ends of the TVS tubes D3, D9 and D13 are respectively connected to the ground end.
10. The control circuit of the automotive LED daytime running light, position light and turn signal light according to claim 1, characterized in that: Pin 7 of the BOOST IC is connected to one end of the resistor R4, the other end of the resistor R4 is connected to one end of the capacitor C5, pin 5 of the BOOST IC is connected to one end of the capacitor C6, and the other ends of the capacitors C5 and C6 are connected to the ground respectively.