CN205174054U - Flashlight treasured that charges - Google Patents

Abstract

The utility model discloses a flashlight treasured that charges is convenient for outdoor exercises or tourism and is carried, has light in weight, efficient multi-functional. The utility model discloses include the charge management circuit, the rechargeable battery input is connected to the charge management circuit output, the electric quantity display circuit is connected to the rechargeable battery output, power output circuit input, wave and button circuit input are considered in the power is connected to electric quantity display circuit output, the wave is considered with the button circuit output to the power is connected LED constant current drive circuit input, power output circuit, electric quantity display circuit, wave and button circuit, LED constant current drive circuit are considered to a plurality of pins of main control chip module respectively. The utility model is suitable for an outdoor exercises person or tourism fan carry, and rechargeable battery light in weight, it is longe-lived, accord with portable and the strong requirement of duration.

Description

A flashlight charging treasure

technical field

The utility model relates to a flashlight, in particular to a multifunctional charging treasure flashlight.

Background technique

At present, most of the flashlight charging treasures on the market use nickel-hydrogen and nickel-cadmium rechargeable batteries, which have small capacity and low efficiency. However, we use lithium rechargeable batteries. Under the same product, lithium rechargeable batteries have a larger volume than nickel Hydrogen and nickel-cadmium rechargeable batteries are smaller and lighter, and lithium rechargeable batteries are more efficient.

Combining a flashlight with a power bank can make full and effective use of the capacity of the rechargeable battery, and the lithium rechargeable battery has no memory effect, and the service life of the rechargeable battery is longer, which greatly increases the outdoor practicability of the flashlight and power bank.

During outdoor sports and travel, carrying a separate charging treasure will increase the weight of the backpack, and the function is too single. The combination of the flashlight and the charging treasure solves the problem of outdoor charging of electronic products, and can also illuminate, while allowing the flashlight The capacity of the rechargeable battery can be fully utilized, and the weight of the backpack is avoided.

Since users generally use it outdoors, it is the most common thing to work in harsh environments with heavy wind and heavy rain. This design will be carried out in two states of windproof and rainproof, so as to solve the problems of unable to illuminate and leak in harsh environments.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a light-weight, high-efficiency multifunctional flashlight charging treasure which is convenient for outdoor sports or travel.

In order to achieve the above object, the utility model adopts the following scheme:

A flashlight charging treasure, including a charging management circuit, the output end of the charging management circuit is connected to the input end of the rechargeable battery, the output end of the rechargeable battery is connected to the power display circuit, the input end of the 5V power supply output circuit, and the output end of the power display circuit is connected to the power filter and the button The input terminal of the circuit, the output terminal of the power filter and button circuit are connected to the input terminal of the LED constant current drive circuit, and several pins of the main control chip module are respectively connected to the power output circuit, power display circuit, power filter and button circuit, and LED constant current drive. circuit, the main control chip module includes a triode Q4 and a main control chip U3, and the pin 5 of the main control chip U3 is grounded.

In some of these embodiments, the charging management circuit includes a USB1 input interface and a main control chip U1, and pin 1 of the USB1 input interface is connected to pins 4 and 2 of the main control chip U1 after passing through the positive pole of the diode D1 and the negative pole of the diode D1. 8. The pin 1 of the USB1 input interface is connected to the pin 4 of the USB1 input interface through the resistor R1, the parallel resistor R10 and the capacitor C15, the pin 4 of the USB1 input interface is grounded, and the cathode of the diode D1 is grounded after passing through the capacitor C1. Pin 4 and pin 8 of chip U1 are grounded after passing through resistor R2 and resistor R11, pin 7 of main control chip U1 is grounded after passing through parallel resistor R11 and capacitor C6, pin 1 and pin 3 of main control chip U1 Grounded, the pin 5 of the main control chip U1 is grounded after passing through the capacitor C12, and the pin 2 of the main control chip U1 is grounded after passing through the resistor R13.

In some embodiments, the pin 5 of the main control chip U1 is connected to the positive pole of the rechargeable battery, and the negative pole of the rechargeable battery is grounded.

In some of these embodiments, the power output circuit includes an inductor L1, a main control chip U2, an N-MOS transistor Q1, a P-MOS transistor Q3, and a USB2 output interface, and the positive electrode of the rechargeable battery is connected to the Pin 1 of the USB2 output interface, an inductor L1 is connected between pin 5 and pin 1 of the main control chip U2, pin 2 of the main control chip U2 is grounded, and pin 2 of the main control chip U2 passes through the capacitor C15 Connect pin 1 of the USB2 output interface, pin 4 of the USB2 output interface is connected to the D pole (drain) of the N-MOS transistor Q1 after passing through the resistor R17, and the G pole (gate) of the N-MOS transistor Q1 passes through the resistor R27 Ground, the S pole (source) of N-MOS tube Q1 is grounded, pin 2 of the USB2 output interface is connected to the cathode of diode D2 after passing through resistor R5, pin 3 of the USB2 output interface is connected to the cathode of diode D2 after passing through resistor R4, and USB2 outputs The pin 2 of the interface is connected to the D pole (drain) of the P-MOS transistor Q1 after passing through the resistor R16, and the pin 3 of the USB2 output interface is connected to the D pole (drain) of the P-MOS transistor Q1 after passing through the resistor R15. The G pole (gate) of the MOS transistor Q1 is grounded after passing through the resistor R27, the S pole (source) of the P-MOS transistor Q1 is grounded, and the pin 4 of the USB2 output interface is grounded after passing through the resistor R14, the parallel resistor R9 and the capacitor C7 .

In some of these embodiments, in the main control chip module, the pin 2 of the main control chip U3 is connected to the C pole (collector) of the triode Q4, the E pole (emitter) of the triode Q4 is connected to the power ground, and the pin 2 of the triode Q4 is connected to the power supply ground. The B pole (base) is connected to the pin 13 of the main control chip U3 after passing through the resistor R28; the connection end of the resistor R1 and the resistor R10 is connected to the pin 3 of the main control chip U3, and the pin 7 of the main control chip U1 is connected to the main control chip U3 Pin 8 of the main control chip U2, pin 4 of the main control chip U2 is connected to pin 9 of the main control chip U3, pin 4 of the USB2 output interface is connected to pin 13 of the main control chip U3 after passing through the resistor R14, and P-MOS tube Q1 The G pole (gate) is connected to the pin 9 of the main control chip U3.

In some of these embodiments, the power display circuit includes several resistors and light-emitting diodes, one end of resistor R6, resistor R7, and resistor R8 connected in parallel is connected to the positive pole of the rechargeable battery, and the other end of resistor R6 is connected to the main control chip U3 after passing through the light-emitting diode D4. Pin 4, the other end of the resistor R7 is connected to pin 6 of the main control chip U3 after passing through the light emitting diode D5, and the other end of the resistor R8 is connected to pin 7 of the main control chip U3 after passing through the light emitting diode D6.

In some of these embodiments, the power supply filter and button circuit includes a parallel connected polarized capacitor C3, a polarized capacitor C4, a capacitor C13, a key switch S1, and a capacitor C8, a parallel connected polarized capacitor C3, a polarized capacitor One end of the polar capacitor C4, capacitor C13, key switch S1, and capacitor C8 is grounded, and the other end of the parallel connected polar capacitor C3, polar capacitor C4, capacitor C13, key switch S1, and capacitor C8 is connected to the positive pole of the rechargeable battery. The positive terminal of the capacitor C3 is connected to the positive terminal of the rechargeable battery, the other end of the key switch S1 and the capacitor C8 are connected to the pin 1 of the main control chip U3, the other end of the capacitor C13 is connected to the pin 10 of the main control chip U3, and the capacitor C13 is connected to the key switch A resistor R19 is connected between S1, and a resistor D18 is connected between the positive end of the polarized capacitor C3 and the positive end of the polarized capacitor C4.

In some of these embodiments, the LED constant current drive circuit includes a capacitor C9, a resistor R21, and a resistor R20, the capacitor C9 and the resistor R21 are connected in parallel, one end of the capacitor C9 and the resistor R21 is grounded, and the other end of the capacitor C9 and the resistor R21 is connected to a microcomputer ( MCU) pin 11 of the main control chip U3, the other end of the resistor R21 is connected to the positive pole of the rechargeable battery after passing through the resistor R20.

In some of these embodiments, the LED constant current drive circuit further includes an LED light source, an inductor L2, a P-MOS transistor Q2, and a diode D3, and the D pole (drain) of the P-MOS transistor Q2 is connected to the positive pole of the rechargeable battery. , the G pole (gate) of the P-MOS transistor Q2 is connected to the pin 14 of the main control chip U3, the S pole (source) of the P-MOS transistor Q2 is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, and the P-MOS transistor Q2 The S pole (source) of the LED light source is connected to the positive pole of the LED light source through the inductor L2, and the negative pole of the LED light source is grounded after passing through the resistor R26. One end of the capacitor C11, the resistor R25, and the resistor R26 is connected to the cathode of the LED light source, and the other end of the capacitor C10, the capacitor C11, the resistor R25, and the resistor R26 connected in parallel is grounded.

When the utility model is used for charging and discharging, the USB charging interface and the USB discharging interface are exposed. At the same time, the flashlight has a charging and discharging indicator light, which will be on during charging and discharging, and will change with the loss of power.

The beneficial technical effects of the utility model are: through the above-mentioned design, the power bank for the flashlight is light in weight, high in efficiency, leak-proof and long in life.

The rechargeable battery of the utility model is a lithium rechargeable battery. When the flashlight charging treasure uses different functions, the indicator light displays in different ways. The beneficial effect of the utility model is: it is suitable for carrying by outdoor sportsmen or travel enthusiasts, and the rechargeable battery is light in weight and long in life, meeting the requirements of portability and strong battery life.

Description of drawings

Fig. 1 is a schematic circuit diagram of the utility model;

Fig. 2 is the electronic circuit diagram of the utility model.

Explanation of reference signs:

Rechargeable battery 11, power output circuit 12, charging management circuit 13, power display circuit 21, power filter and button circuit 22, LED constant current drive circuit 25, main control chip module 27.

detailed description

In order to further understand the features, technical means, and specific objectives and functions of the utility model, and to analyze the advantages and spirit of the utility model, the utility model is further described through the following examples.

Referring to accompanying drawing 1, the utility model comprises charging management circuit 13, and the output terminal of charging management circuit 13 is connected to the input terminal of rechargeable battery 11, and the output terminal of rechargeable battery 11 is connected to the input terminal of power display circuit 21, 5V power supply output circuit 12, and the power display circuit The 21 output terminal is connected to the input terminal of the power filter and the button circuit 22, the output terminal of the power filter and the button circuit 22 is connected to the input terminal of the LED constant current drive circuit 25, and several pins of the main control chip module 27 are respectively connected to the power output circuit 12, the battery Display circuit 21, power filter and button circuit 22, LED constant current drive circuit 25, main control chip module 27 includes triode Q4 and main control chip U3, pin 5 of microcomputer (MCU) main control chip U3 is grounded.

The charging management circuit 13 includes the USB1 input interface, the main control chip U1, the pin 1 of the USB1 input interface is connected to the pin 4 and pin 8 of the main control chip U1 after passing through the positive pole of the diode D1 and the negative pole of the diode D1, and the pin of the USB1 input interface 1 Connect the pin 4 of the USB1 input interface through the resistor R1, the parallel resistor R10 and the capacitor C15, the pin 4 of the USB1 input interface is grounded, the cathode of the diode D1 is grounded after passing through the capacitor C1, and the pin 4, lead Pin 8 is grounded after passing through resistor R2 and resistor R11, pin 7 of the main control chip U1 is grounded after passing through parallel resistor R11 and capacitor C6, pin 1 and pin 3 of the main control chip U1 are grounded, and pin 7 of the main control chip U1 is grounded. The pin 5 is grounded after passing through the capacitor C12, and the pin 2 of the main control chip U1 is grounded after passing through the resistor R13.

The pin 5 of the main control chip U1 is connected to the positive pole of the rechargeable battery 11 , and the negative pole of the rechargeable battery 11 is grounded.

The power output circuit 12 includes an inductor L1, a main control chip U2, an N-MOS tube Q1, a P-MOS tube Q3, and a USB2 output interface. The positive pole of the rechargeable battery 11 is connected to the pin 1 of the USB2 output interface after passing through the inductor L1 and the diode D2. , an inductor L1 is connected between pin 5 and pin 1 of the main control chip U2, pin 2 of the main control chip U2 is grounded, and pin 2 of the main control chip U2 is connected to the pin of the USB2 output interface after passing through the capacitor C15 1. Pin 4 of the USB2 output interface is connected to the D pole (drain) of the N-MOS transistor Q1 after passing through the resistor R17, and the G pole (gate) of the N-MOS transistor Q1 is grounded after passing through the resistor R27, and the N-MOS transistor Q1 The S pole (source) of the USB2 output interface is grounded, the pin 2 of the USB2 output interface is connected to the cathode of the diode D2 after passing through the resistor R5, the pin 3 of the USB2 output interface is connected to the cathode of the diode D2 after passing through the resistor R4, and the pin 2 of the USB2 output interface is connected to the cathode of the diode D2 after passing through the resistor R5. R16 is connected to the D pole (drain) of the P-MOS transistor Q1, the pin 3 of the USB2 output interface is connected to the D pole (drain) of the P-MOS transistor Q1 after passing through the resistor R15, and the G pole of the P-MOS transistor Q1 ( The gate) is grounded after passing through the resistor R27, the S pole (source) of the P-MOS transistor Q1 is grounded, and the pin 4 of the USB2 output interface is grounded after passing through the resistor R14, the parallel resistor R9 and the capacitor C7.

In the main control chip module 27, the pin 2 of the main control chip U3 is connected to the C pole (collector) of the triode Q4, the E pole (emitter) of the triode Q4 is connected to the power ground, and the B pole (base) of the triode Q4 passes through the resistor R28 is connected to pin 13 of the main control chip U3; the connection end of resistor R1 and resistor R10 is connected to pin 3 of the main control chip U3, pin 7 of the main control chip U1 is connected to pin 8 of the main control chip U3, and the main control chip Pin 4 of U2 is connected to pin 9 of the main control chip U3, pin 4 of the USB2 output interface is connected to pin 13 of the main control chip U3 after passing through the resistor R14, and the G pole (gate) of the P-MOS transistor Q1 is connected to the main control chip U3. Control chip U3 pin 9.

The power display circuit 21 includes several resistors and light-emitting diodes. One end of the resistors R6, R7, and R8 connected in parallel is connected to the positive pole of the rechargeable battery 11, and the other end of the resistor R6 is connected to the pin 4 of the main control chip U3 after passing through the light-emitting diode D4. One end of the resistor R8 is connected to pin 6 of the main control chip U3 after passing through the light emitting diode D5, and the other end of the resistor R8 is connected to pin 7 of the main control chip U3 after passing through the light emitting diode D6.

Power filtering and button circuit 22 includes polarized capacitor C3, polarized capacitor C4, capacitor C13, key switch S1, capacitor C8 connected in parallel, polarized capacitor C3, polarized capacitor C4, capacitor C13, button One end of switch S1 and capacitor C8 is grounded, and the other end of parallel connected polarized capacitor C3, polarized capacitor C4, capacitor C13, key switch S1, and capacitor C8 is connected to the positive pole of rechargeable battery 11, and the positive terminal of polarized capacitor C3 is connected to charge The positive pole of the battery 11, the other end of the key switch S1 and the capacitor C8 are connected to the pin 1 of the main control chip U3, the other end of the capacitor C13 is connected to the pin 10 of the main control chip U3, and a resistor is connected between the capacitor C13 and the key switch S1 R19, a resistor D18 is connected between the positive terminal of the polarized capacitor C3 and the positive terminal of the polarized capacitor C4.

The LED constant current driving circuit 25 includes a capacitor C9, a resistor R21, and a resistor R20. The capacitor C9 and the resistor R21 are connected in parallel. Pin 11, the other end of the resistor R21 is connected to the positive pole of the rechargeable battery 11 after passing through the resistor R20.

The LED constant current drive circuit 25 also includes an LED light source, an inductor L2, a P-MOS tube Q2, and a diode D3. The G pole (gate) is connected to pin 14 of the main control chip U3, the S pole (source) of the P-MOS transistor Q2 is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, and the S pole (source) of the P-MOS transistor Q2 The positive pole of the LED light source is connected through the inductor L2, the negative pole of the LED light source is grounded after passing through the resistor R26, the negative pole of the LED light source is connected to the pin 12 of the main control chip U3 after passing through the resistor R24 and the resistor R23, and the parallel capacitor C10, capacitor C11, resistor R25, resistor One end of R26 is connected to the negative electrode of the LED light source, and the other end of the capacitor C10, capacitor C11, resistor R25, and resistor R26 connected in parallel is grounded.

Functional description of the utility model:

1. LED light control, press the switch to control the LED light ON/OFF;

2. Automatically identify the charging status, start to display the charging power;

3. Automatically identify whether the 5V output is connected to electronic equipment, and automatically turn on and off the 5V power output;

4. The power display of the working status allows users to use it more reasonably.

When charging and discharging, the USB1 input interface and USB2 output interface are exposed. At the same time, the flashlight has a charging and discharging indicator light (power display circuit 21), which will light up during charging and discharging, and will change with the loss of power. . More than 75% of the indicator lights are all on, 75% to 50% are two indicator lights, and 50%-25% one indicator light is on. An indicator light flashes when the battery is 5% or below.

The above-mentioned embodiments only express some implementations of the present utility model, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the present utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present utility model should be based on the appended claims.

Claims (9)

1. A flashlight power bank, comprising: a charging management circuit (13), the output of the charging management circuit (13) is connected to the input of the rechargeable battery (11), and it is characterized in that the output of the rechargeable battery (11) Connect the power supply display circuit (21) and the input terminal of the 5V power output circuit (12), the output terminal of the power supply display circuit (21) is connected to the input terminal of the power filter and button circuit (22), and the power filter and button circuit ( 22) The output end is connected to the input end of the LED constant current drive circuit (25), and several pins of the main control chip module (27) are respectively connected to the power output circuit (12), the power display circuit (21), the power filter and the button circuit ( 22) LED constant current drive circuit (25), the main control chip module (27) includes a triode Q4 and a main control chip U3, the pin 5 of the main control chip U3 is grounded. 2. A flashlight charging treasure according to claim 1, characterized in that, the charging management circuit (13) includes a USB1 input interface and a main control chip U1, and the pin 1 of the USB1 input interface passes through the anode of a diode D1 , the negative electrode of diode D1 is connected to pin 4 and pin 8 of the main control chip U1, and pin 1 of the USB1 input interface is connected to pin 4 of the USB1 input interface after passing through the resistor R1, the parallel resistor R10 and the capacitor C15. The pin 4 of the USB1 input interface is grounded, the negative electrode of the diode D1 is grounded after passing through the capacitor C1, the pin 4 and the pin 8 of the main control chip U1 are grounded after passing through the resistor R2 and the resistor R11, and the main control chip U1 The pin 7 of the main control chip U1 is grounded after passing through the parallel resistance R11 and the capacitor C6, the pin 1 and the pin 3 of the main control chip U1 are grounded, the pin 5 of the main control chip U1 is grounded after passing through the capacitor C12, and the main control chip U1 is grounded after passing through the capacitor C12. The pin 2 of the control chip U1 is grounded after passing through the resistor R13. 3 . The flashlight charging treasure according to claim 1 , wherein the pin 5 of the main control chip U1 is connected to the positive pole of the rechargeable battery ( 11 ), and the negative pole of the rechargeable battery ( 11 ) is grounded. 4 . 4. A flashlight power bank according to claim 2, characterized in that the power output circuit (12) includes an inductor L1, a main control chip U2, an N-MOS transistor Q1, a P-MOS transistor Q3, and a USB2 Output interface, the positive pole of the rechargeable battery (11) is connected to the pin 1 of the USB2 output interface after passing through the inductor L1 and the diode D2, and the inductor L1 is connected between the pin 5 and the pin 1 of the main control chip U2, The pin 2 of the main control chip U2 is grounded, the pin 2 of the main control chip U2 is connected to the pin 1 of the USB2 output interface through the capacitor C15, and the pin 4 of the USB2 output interface is connected to the N - the D pole of the MOS transistor Q1, the G pole of the N-MOS transistor Q1 is grounded after passing through the resistor R27, the S pole of the N-MOS transistor Q1 is grounded, and the pin 2 of the USB2 output interface is connected after passing through the resistor R5 The negative pole of diode D2, the pin 3 of the USB2 output interface is connected to the negative pole of diode D2 after passing through the resistor R4, the pin 2 of the USB2 output interface is connected to the D pole of the P-MOS transistor Q1 after passing through the resistor R16, the USB2 output interface The pin 3 of the P-MOS transistor Q1 is connected to the D pole of the P-MOS transistor Q1 after passing through the resistor R15, the G pole of the P-MOS transistor Q1 is grounded after passing through the resistor R27, the S pole of the P-MOS transistor Q1 is grounded, and the USB2 output The pin 4 of the interface is grounded after passing through the resistor R14, the parallel resistor R9 and the capacitor C7. 5. A flashlight charging treasure according to claim 4, characterized in that, in the main control chip module (27), the pin 2 of the main control chip U3 is connected to the C pole of the triode Q4, and the triode The E pole of Q4 is connected to the power ground, and the B pole of the triode Q4 is connected to the pin 13 of the main control chip U3 after passing through the resistor R28; the connection end of the resistor R1 and the resistor R10 is connected to the pin 3 of the main control chip U3, and the Pin 7 of the main control chip U1 is connected to pin 8 of the main control chip U3, pin 4 of the main control chip U2 is connected to pin 9 of the main control chip U3, and pin 4 of the USB2 output interface passes through a resistor R14 Then it is connected to pin 13 of the main control chip U3, and the G pole of the P-MOS transistor Q1 is connected to pin 9 of the main control chip U3. 6. A flashlight charging treasure according to claim 1, characterized in that, the power display circuit (21) includes several resistors and light-emitting diodes, and one end of resistor R6, resistor R7, and resistor R8 connected in parallel is connected to the rechargeable battery (11 ) positive pole, the other end of the resistor R6 is connected to the pin 4 of the main control chip U3 after passing through the light emitting diode D4, the other end of the resistor R7 is connected to the pin 6 of the main control chip U3 after passing through the light emitting diode D5, and the other end of the resistor R8 is One end is connected to pin 7 of the main control chip U3 after passing through the light emitting diode D6. 7. A flashlight charging treasure according to claim 1, characterized in that, the power filtering and button circuit (22) includes a polarized capacitor C3, a polarized capacitor C4, a capacitor C13, and a key switch connected in parallel S1, capacitor C8, polarized capacitor C3, polarized capacitor C4, capacitor C13, key switch S1, capacitor C8 are connected in parallel, and polarized capacitor C3, polarized capacitor C4, capacitor C13, and key switch are connected in parallel The other end of S1 and the capacitor C8 are connected to the positive pole of the rechargeable battery (11), the positive end of the polarized capacitor C3 is connected to the positive pole of the rechargeable battery (11), and the other end of the key switch S1 and the capacitor C8 are connected to the main control chip U3 pin 1 of the capacitor C13, the other end of the capacitor C13 is connected to the pin 10 of the main control chip U3, a resistor R19 is connected between the capacitor C13 and the key switch S1, and the positive terminal of the polar capacitor C3 is connected to the polarity A resistor D18 is connected between the positive terminals of the capacitor C4. 8. A flashlight power bank according to claim 1, characterized in that the LED constant current drive circuit (25) includes a capacitor C9, a resistor R21, and a resistor R20, and the capacitor C9 is connected in parallel with the resistor R21, so One end of the capacitor C9 and the resistor R21 is grounded, the other end of the capacitor C9 and the resistor R21 is connected to the pin 11 of the main control chip U3, and the other end of the resistor R21 is connected to the positive pole of the rechargeable battery (11) after passing through the resistor R20. 9. A flashlight charging treasure according to claim 1, characterized in that, the LED constant current drive circuit (25) also includes an LED light source, an inductor L2, a P-MOS transistor Q2, and a diode D3, the The D pole of the P-MOS transistor Q2 is connected to the positive pole of the rechargeable battery (11), the G pole of the P-MOS transistor Q2 is connected to the pin 14 of the main control chip U3, and the S pole of the P-MOS transistor Q2 is connected to the diode D2 Negative pole, the positive pole of the diode D2 is grounded, the S pole of the P-MOS transistor Q2 is connected to the positive pole of the LED light source through the inductor L2, the negative pole of the LED light source is grounded after passing through the resistor R26, and the negative pole of the LED light source is connected to the positive pole of the LED light source through the resistor R24 and the resistor R23 Then connect the pin 12 of the main control chip U3, one end of the parallel capacitor C10, capacitor C11, resistor R25, and resistor R26 is connected to the negative pole of the LED light source, and the other end of the parallel capacitor C10, capacitor C11, resistor R25, and resistor R26 is grounded.