Dual-power control circuit

Abstract

The utility model discloses a dual-power control circuit, and relates to the field of control circuits. According to the specific implementation scheme, the dual-power-supply control circuit comprises a charging module, a voltage reduction module, a trigger module used for controlling the voltage reduction module, a main lamp control module powered by dual power supplies, a main control module and a display module, the charging module is electrically connected with the main control module, the voltage reduction module is connected with the output end of the charging module, and the display module is connected with the main lamp control module. The input end of the trigger module is connected with the voltage reduction module, the output end of the trigger module is connected with the main control module, and the main lamp control module is electrically connected with the main control module. The dual power supplies are used for supplying power to the flashlight, when the rechargeable battery is used up, the dry battery can continue to be used for supplying power, the rechargeable battery is provided with a charging port, independent charging can be achieved, the flashlight does not need to be occupied for charging, and the flashlight is convenient and easy to carry.

Description

TECHNICAL FIELD

[0001] The utility model relates to control circuit technical field especially relates to a dual power control circuit. BACKGROUND

[0002] As a portable lighting tool, the flashlight has been widely used in outdoor activities, emergency rescue, military operations and daily life and many other fields. Due to the characteristics of the flashlight to be portable, the internal space is not enough, and the traditional flashlight mostly relies on a single power supply mode, such as dry batteries or charged lithium batteries. However, with the development of technology and the diversification of user needs, the flashlight with single power supply mode gradually shows some shortcomings. SUMMARY

[0003] Therefore, the utility model provides a dual power control circuit to solve the problem of single power supply mode of the traditional flashlight.

[0004] The utility model provides a dual power control circuit, which comprises:

[0005] The charging module, the voltage reduction module, the trigger module for controlling the voltage reduction module, the main light control module powered by dual power supply, the main control module and the display module are electrically connected with the main control module, the output end of the charging module is connected with the voltage reduction module, the input end of the trigger module is connected with the voltage reduction module, the output end of the trigger module is connected with the main control module, and the main light control module is electrically connected with the main control module.

[0006] The main control module comprises a main control chip U4, a switch S1, a MOS tube Q11, a MOS tube Q12, a resistor R26, a resistor R27 and a resistor R31, the No. 5 pin of the main control chip U4 is connected with the ground through the switch S1, the No. 19 pin of the main control chip U4 is connected with one end of the resistor R26, the No. 18 pin of the main control chip U4 is connected with the other end of the resistor R26, the other end of the resistor R26 is connected with the source electrode of the MOS tube Q12 through the resistor R27, the No. 2 pin of the main control chip U4 is electrically connected with the gate electrode of the MOS tube Q12, the No. 7 pin of the main control chip U4 is electrically connected with the source electrode of the MOS tube Q12, the drain electrode of the MOS tube Q12 is electrically connected with the gate electrode of the MOS tube Q11, the No. 9 pin of the main control chip U4 is electrically connected with the source electrode of the MOS tube Q11, the resistor R31 is connected between the gate electrode and the source electrode of the MOS tube Q11, and the drain electrode of the MOS tube Q11 is connected with the display module.

[0007] The main light control module includes voltage stabilizer U3, parallel MOS tube group, MOS tube Q10, diode D1 and main light LED1, the No.2 pin of the voltage stabilizer U3 is grounded through capacitor C14, the No.2 pin of the voltage stabilizer U3 is also electrically connected with the No.9 pin of the main control chip U4, the No.1 pin of the voltage stabilizer U3 is grounded, the No.3 pin of the voltage stabilizer U3 is also connected with the positive electrode of the battery through resistance R25 and accessed to the port B+, the No.3 pin of the voltage stabilizer U3 is also electrically connected with the negative electrode of the diode D1, the negative electrode of the diode D1 is also grounded through capacitor C13, the positive electrode of the diode D1 is connected with 5V+ voltage, the positive electrode of the main light LED1 is connected with the positive electrode of the battery and accessed to the port B+, the positive electrode of the main light LED1 is also grounded through capacitor C12, the negative electrode of the main light LED1 is connected with the drain of the parallel MOS tube group, the source of the parallel MOS tube group is grounded, the gate of the parallel MOS tube group is electrically connected with the No.17 pin of the main control chip U4, the gate of the parallel MOS tube group is also grounded through resistance R24, the negative electrode of the main light LED1 is also connected with the drain of the MOS tube Q10, the source of the MOS tube Q10 is grounded through resistance R29, the gate of the MOS tube Q10 is electrically connected with the No.4 pin of the main control chip U4, the gate of the MOS tube Q10 is also grounded through resistance R28, the port B+ is also electrically connected with one end of resistance R22, the other end of the resistance R22 is connected with the No.20 pin of the main control chip U4, the other end of the resistance R22 is also grounded through resistance R23, capacitor C15 is connected with the resistance R23 in parallel, one end of resistance R5 is connected with 5V+ voltage, the other end of the resistance R5 is connected with the No.13 pin of the main control chip U4, the other end of the resistance R5 is also connected with the port B- through resistance R6, one end of resistance R20 is connected with the port 9AA+, the other end of the resistance R20 is electrically connected with the No.1 pin of the main control chip U4, the other end of the resistance R20 is also grounded through resistance R23, the resistance R23 is connected with capacitor C15 in parallel.

[0008] The parallel MOS tube group includes MOS tube Q7, MOS tube Q8 and MOS tube Q9, the gate of the MOS tube Q7 is connected with the gate of the MOS tube Q8 and the gate of the MOS tube Q9, the drain of the MOS tube Q7 is connected with the drain of the MOS tube Q8 and the drain of the MOS tube Q9, the source of the MOS tube Q7 is connected with the source of the MOS tube Q8 and the source of the MOS tube Q9.

[0009] The charging module includes a charging management chip U1, a socket USB1, MOS tubes Q1, Q2, Q3, an inductor L1 and a diode D2, interfaces A12 and B12 of the socket USB1 are grounded, interfaces A5 and B5 of the socket USB1 are respectively grounded through resistors R4 and R3, interfaces A9 and B9 of the socket USB1 are connected to 5V+ voltage, the source of the MOS tube Q1 is connected to 5V+ voltage, the source and the gate of the MOS tube Q1 are electrically connected through a resistor R1, the drain of the MOS tube Q1 is electrically connected to pin 3 of the charging management chip U1 through the inductor L1, pin 3 of the charging management chip U1 is also connected to pin 4 of the charging management chip U1 through the diode D2, pin 4 of the charging management chip U1 is also grounded through a capacitor C3, the capacitor C3 is connected in parallel with a capacitor C4, one end of a resistor R7 is connected to the drain of the MOS tube Q1, the other end of the resistor R7 is grounded through a capacitor C2, the drain of the MOS tube Q1 is also grounded through a capacitor C1, the source of the MOS tube Q2 is grounded, the gate of the MOS tube Q2 is grounded through a resistor R2, the gate of the MOS tube Q2 is also electrically connected to pin 14 of a main control chip U4, the drain of the MOS tube Q2 is electrically connected to the gate of the MOS tube Q1, the drain of the MOS tube Q1 is also electrically connected to one end of a resistor R8, the other end of the resistor R8 is grounded through a resistor R9, pin 7 of the charging management chip U1 is electrically connected to the other end of the resistor R8, pin 8 of the charging management chip U1 is electrically connected to pin 15 of the main control chip U4, pin 6 of the charging management chip U1 is grounded through a resistor R10, pin 6 of the charging management chip U1 is grounded through a capacitor C5, a capacitor C6 is connected in parallel with the capacitor C5, pin 6 of the charging management chip U1 is electrically connected to the source of the MOS tube Q3, the gate of the MOS tube Q3 is grounded, the drain of the MOS tube Q3 is connected to a battery positive access port B+, the battery positive access port B+ is connected to the positive pole of a battery pack, the negative pole of the battery pack is connected to a battery negative access port B-.

[0010] The step-down module comprises a step-down constant current chip U2, a socket USB2, an inductor L2 and a MOS tube Q6, a capacitor C9 is connected between the No.1 pin and the No.6 pin of the step-down constant current chip U2, the No.2 pin of the step-down constant current chip U2 is grounded, the No.3 pin of the step-down constant current chip U2 is electrically connected with one end of a resistor R17, the other end of the resistor R17 is grounded, the No.4 pin of the step-down constant current chip U2 is electrically connected with the No.16 pin of the main control chip U4, the No.5 pin of the step-down constant current chip U2 is electrically connected with the drain electrode of the MOS tube Q6, the gate electrode of the MOS tube Q6 is grounded through a resistor R15, the source electrode of the MOS tube Q6 is connected with the positive electrode access port B+ of the battery, the drain electrode of the MOS tube Q6 is also grounded through a capacitor C7, a capacitor C8 is connected in parallel with the capacitor C7, the No.6 pin of the step-down constant current chip U2 is also connected with one end of the inductor L2, the other end of the inductor L2 is electrically connected with the resistor R17 through a resistor R16, the other end of the inductor L2 is grounded through a capacitor C10, a capacitor C11 is connected in parallel with the capacitor C10, the other end of the inductor L2 is also electrically connected with the positive electrode USB+ of the power supply, the interfaces A12 and B12 of the socket USB2 are connected with the negative electrode USB- of the power supply, the interfaces A9 and B9 of the socket USB2 are electrically connected with the positive electrode USB+ of the power supply, the interface A5 of the socket USB2 is connected with the positive electrode USB+ of the power supply through a resistor R19, the interface B5 of the socket USB2 is connected with the positive electrode USB+ of the power supply through a resistor R18.

[0011] The trigger module comprises a MOS tube Q4 and a MOS tube Q5, the gate electrode of the MOS tube Q4 is electrically connected with the No.16 pin of the main control chip U4, the gate electrode of the MOS tube Q4 is also grounded through a resistor R11, the source electrode of the MOS tube Q4 is electrically connected with the No.6 pin of the main control chip U4, the source electrode of the MOS tube Q4 is also grounded through a resistor R12, the drain electrode of the MOS tube Q4 is connected with the negative electrode USB- of the power supply, the gate electrode of the MOS tube Q5 is electrically connected with the negative electrode USB- of the power supply through a resistor R13, the gate electrode of the MOS tube Q5 is also grounded through a resistor R14, the drain electrode of the MOS tube Q4 is electrically connected with the No.10 pin of the main control chip U4, and the source electrode of the MOS tube Q4 is grounded.

[0012] The display module comprises a display screen OLED, a capacitor C20 is connected between a No.1 pin and a No.2 pin of the display screen OLED, a capacitor C16 is connected between a No.3 pin and a No.4 pin of the display screen OLED, a No.12 pin of the display screen OLED is grounded through a resistor R30, a No.13 pin of the display screen OLED is grounded through a capacitor C17, a No.14 pin of the display screen OLED is grounded through a capacitor C19, a capacitor C18 is connected in parallel with the capacitor C19, a No.5 pin and a No.8 pin of the display screen OLED are electrically connected with a drain of the MOS tube Q11, and a No.9 pin, a No.10 pin and a No.11 pin of the display screen OLED are electrically connected with a No.8 pin, a No.12 pin and a No.11 pin of the main control chip U4 respectively.

[0013] Beneficial effects: the utility model discloses a double power supply for flashlight power supply, when the charge battery power is used up, can continue to utilize dry battery power supply, and the charge battery itself has the charging port, can charge independently, need not occupy flashlight itself and charge, and convenient and easy to carry.

[0014] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, and is not used to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used for better understanding the scheme and do not constitute the limitation to the utility model. Among them:

[0016] Figure 1 It is the main light control module circuit diagram provided by the utility model;

[0017] Figure 2 It is the main control module circuit diagram provided by the utility model;

[0018] Figure 3 It is the charging module circuit diagram provided by the utility model;

[0019] Figure 4 It is the voltage reduction module circuit diagram provided by the utility model;

[0020] Figure 5 It is the trigger module circuit diagram provided by the utility model;

[0021] Figure 6 It is the display module circuit diagram provided by the utility model. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present application will be described below in connection with the attached drawings, which are meant to be illustrative only and not limiting in any way. Numerous other embodiments can be devised by those of ordinary skill in the art without departing from the scope and spirit of the present application. In the following description, reference is made to the accompanying drawings which form a part hereof, and in which are shown, by way of illustration, various embodiments of the present application. It is understood that other embodiments can be utilized and mechanical changes can be made without departing from the scope of the present application. The following detailed description, therefore, is not to be taken in a limiting sense, as the scope of the present application is defined by the appended claims.

[0023] The utility model provides a kind of dual power control circuit, comprising:

[0024] Charging module, voltage reduction module, trigger module for controlling the voltage reduction module, main light control module powered by dual power supply, main control module and display module, the charging module is electrically connected with the main control module, the voltage reduction module connects the output end of the charging module, the input end of the trigger module connects the voltage reduction module, the output end of the trigger module connects the main control module, the main light control module is electrically connected with the main control module.

[0025] As Figure 2 As shown in the figure, the main control module includes main control chip U4, switch S1, MOS tube Q11, MOS tube Q12, resistance R26, resistance R27 and resistance R31, the 5th pin of the main control chip U4 is grounded by switch S1, the 19th pin of the main control chip U4 is connected with one end of the resistance R26, the 18th pin of the main control chip U4 is connected with the other end of the resistance R26, the other end of the resistance R26 is also connected with the source electrode of the MOS tube Q12 by the resistance R27, the 2nd pin of the main control chip U4 is electrically connected with the gate electrode of the MOS tube Q12, the 7th pin of the main control chip U4 is electrically connected with the source electrode of the MOS tube Q12, the drain electrode of the MOS tube Q12 is electrically connected with the gate electrode of the MOS tube Q11, the 9th pin of the main control chip U4 is electrically connected with the source electrode of MOS tube Q11, the resistance R31 is connected between the gate electrode and the source electrode of the MOS tube Q11, and the drain electrode of the MOS tube Q11 is connected with the display module.

[0026] As Figure 1As shown, the main light control module includes voltage stabilizer U3, parallel MOS tube group, MOS tube Q10, diode D1 and main light LED1, the pin 2 of the voltage stabilizer U3 is grounded through capacitor C14, the pin 2 of the voltage stabilizer U3 is also electrically connected with the pin 9 of the main control chip U4, the pin 1 of the voltage stabilizer U3 is grounded, the pin 3 of the voltage stabilizer U3 is also connected with the positive electrode of the battery access port B+ through resistor R25, the pin 3 of the voltage stabilizer U3 is also electrically connected with the negative electrode of the diode D1, the negative electrode of the diode D1 is also grounded through capacitor C13, the positive electrode of the diode D1 is connected with 5V+ voltage, the positive electrode of the main light LED1 is connected with the positive electrode of the battery access port B+, the positive electrode of the main light LED1 is also grounded through capacitor C12, the negative electrode of the main light LED1 is connected with the drain of the parallel MOS tube group, the source of the parallel MOS tube group is grounded, the gate of the parallel MOS tube group is electrically connected with the pin 17 of the main control chip U4, the gate of the parallel MOS tube group is also grounded through resistor R24, the negative electrode of the main light LED1 is also connected with the drain of the MOS tube Q10, the source of the MOS tube Q10 is grounded through resistor R29, the gate of the MOS tube Q10 is electrically connected with the pin 4 of the main control chip U4, the gate of the MOS tube Q10 is also grounded through resistor R28, the positive electrode of the battery access port B+ is also electrically connected with one end of resistor R22, the other end of the resistor R22 is connected with the pin 20 of the main control chip U4, the other end of the resistor R22 is also grounded through resistor R23, capacitor C15 is connected with the resistor R23 in parallel, one end of resistor R5 is connected with 5V+ voltage, the other end of the resistor R5 is connected with the pin 13 of the main control chip U4, the other end of the resistor R5 is also connected with the battery negative electrode access port B- through resistor R6, one end of resistor R20 is connected with the dry battery access port 9AA+, the other end of the resistor R20 is electrically connected with the pin 1 of the main control chip U4, the other end of the resistor R20 is also grounded through resistor R23, the resistor R23 is connected with capacitor C15 in parallel.

[0027] The model of the voltage stabilizer U3 is 6209A36.

[0028] The parallel MOS tube group includes MOS tube Q7, MOS tube Q8 and MOS tube Q9, the gate of the MOS tube Q7 is connected with the gate of the MOS tube Q8 and the gate of the MOS tube Q9, the drain of the MOS tube Q7 is connected with the drain of the MOS tube Q8 and the drain of the MOS tube Q9, the source of the MOS tube Q7 is connected with the source of the MOS tube Q8 and the source of the MOS tube Q9.

[0029] As shown in the figure, the main light control module includes voltage stabilizer U3, parallel MOS tube group, MOS tube Q10, diode D1 and main light LED1, the pin 2 of the voltage stabilizer U3 is grounded through capacitor C14, the pin 2 of the voltage stabilizer U3 is also electrically connected with the pin 9 of the main control chip U4, the pin 1 of the voltage stabilizer U3 is grounded, the pin 3 of the voltage stabilizer U3 is also connected with the positive electrode of the battery access port B+ through resistor R25, the pin 3 of the voltage stabilizer U3 is also electrically connected with the negative electrode of the diode D1, the negative electrode of the diode D1 is also grounded through capacitor C13, the positive electrode of the diode D1 is connected with 5V+ voltage, the positive electrode of the main light LED1 is connected with the positive electrode of the battery access port B+, the positive electrode of the main light LED1 is also grounded through capacitor C12, the negative electrode of the main light LED1 is connected with the drain of the parallel MOS tube group, the source of the parallel MOS tube group is grounded, the gate of the parallel MOS tube group is electrically connected with the pin 17 of the main control chip U4, the gate of the parallel MOS tube group is also grounded through resistor R24, the negative electrode of the main light LED1 is also connected with the drain of the MOS tube Q10, the source of the MOS tube Q10 is grounded through resistor R29, the gate of the MOS tube Q10 is electrically connected with the pin 4 of the main control chip U4, the gate of the MOS tube Q10 is also grounded through resistor R28, the positive electrode of the battery access port B+ is also electrically connected with one end of resistor R22, the other end of the resistor R22 is connected with the pin 20 of the main control chip U4, the other end of the resistor R22 is also grounded through resistor R23, capacitor C15 is connected with the resistor R23 in parallel, one end of resistor R5 is connected with 5V+ voltage, the other end of the resistor R5 is connected with the pin 13 of the main control chip U4, the other end of the resistor R5 is also connected with the battery negative electrode access port B- through resistor R6, one end of resistor R20 is connected with the dry battery access port 9AA+, the other end of the resistor R20 is electrically connected with the pin 1 of the main control chip U4, the other end of the resistor R20 is also grounded through resistor R23, the resistor R23 is connected with capacitor C15 in parallel. Figure 3As shown, the charging module includes a charging management chip U1, a socket USB1, a MOS tube Q1, a MOS tube Q2, a MOS tube Q3, an inductor L1 and a diode D2, the interfaces A12 and B12 of the socket USB1 are grounded, the interfaces A5 and B5 of the socket USB1 are respectively grounded through a resistor R4 and a resistor R3, the interfaces A9 and B9 of the socket USB1 are connected to a 5V+ voltage, the source of the MOS tube Q1 is connected to a 5V+ voltage, the source and the gate of the MOS tube Q1 are electrically connected through a resistor R1, the drain of the MOS tube Q1 is electrically connected to the 3rd pin of the charging management chip U1 through the inductor L1, the 3rd pin of the charging management chip U1 is also connected to the 4th pin of the charging management chip U1 through the diode D2, the 4th pin of the charging management chip U1 is also grounded through a capacitor C3, the capacitor C3 is connected in parallel with a capacitor C4, one end of a resistor R7 is connected to the drain of the MOS tube Q1, the other end of the resistor R7 is grounded through a capacitor C2, the drain of the MOS tube Q1 is also grounded through a capacitor C1, the source of the MOS tube Q2 is grounded, the gate of the MOS tube Q2 is grounded through a resistor R2, the gate of the MOS tube Q2 is also electrically connected to the 14th pin of the main control chip U4, the drain of the MOS tube Q2 is electrically connected to the gate of the MOS tube Q1, the drain of the MOS tube Q1 is also electrically connected to one end of a resistor R8, the other end of the resistor R8 is grounded through a resistor R9, the 7th pin of the charging management chip U1 is electrically connected to the other end of the resistor R8, the 8th pin of the charging management chip U1 is electrically connected to the 15th pin of the main control chip U4, the 6th pin of the charging management chip U1 is grounded through a resistor R10, the 6th pin of the charging management chip U1 is grounded through a capacitor C5, a capacitor C6 is connected in parallel with the capacitor C5, the 6th pin of the charging management chip U1 is electrically connected to the source of the MOS tube Q3, the gate of the MOS tube Q3 is grounded, the drain of the MOS tube Q3 is connected to a battery positive access port B+, the battery positive access port B+ is connected to a battery pack positive electrode, and the battery pack negative electrode is connected to a battery negative access port B-.

[0030] The capacitor C3 (106pF) and the capacitor C4 (106pF) are coupling capacitors for passing alternating current while blocking direct current.

[0031] The USB1 is a Type-C charging port, and the charging management chip U1 is 5080E. When there is an electric input at the USB1, the inductor L1 raises the 5V voltage to 8.2V, and charges the battery pack connected at B+ and B-. The gate of the MOS tube Q2 is electrically connected with the 14th pin of the main control chip U4. The MCU outputs a signal to the display screen OLED, and the display screen OLED displays the charging state symbol. The 5th pin of the charging management chip U1 detects the voltage at B+. When the voltage reaches 8.4V, the charging management chip U1 cuts off the charging current, stops charging, and at the same time, the 8th pin of the charging management chip U1 provides a signal to the 15th pin of the main control chip U4. The main control chip U4 outputs a signal to the display screen OLED that the battery is fully charged, and the display screen OLED displays the charging capacity of 100%.

[0032] As shown in Figure 4 The voltage reduction constant current chip U2, the USB2, the inductor L2 and the MOS tube Q6 are connected in series. The 1st pin and the 6th pin of the voltage reduction constant current chip U2 are connected with the capacitor C9. The 2nd pin of the voltage reduction constant current chip U2 is grounded. The 3rd pin of the voltage reduction constant current chip U2 is electrically connected with one end of the resistor R17. The other end of the resistor R17 is grounded. The 4th pin of the voltage reduction constant current chip U2 is electrically connected with the 16th pin of the main control chip U4. The 5th pin of the voltage reduction constant current chip U2 is electrically connected with the drain of the MOS tube Q6. The gate of the MOS tube Q6 is grounded through the resistor R15. The source of the MOS tube Q6 is connected with the positive electrode access port B+ of the battery. The drain of the MOS tube Q6 is also grounded through the capacitor C7. The capacitor C8 is connected in parallel with the capacitor C7. The 6th pin of the voltage reduction constant current chip U2 is also connected with one end of the inductor L2. The other end of the inductor L2 is electrically connected with the resistor R17 through the resistor R16. The other end of the inductor L2 is grounded through the capacitor C10. The capacitor C11 is connected in parallel with the capacitor C10. The other end of the inductor L2 is also electrically connected with the positive electrode USB+ of the power supply. The interfaces A12 and B12 of the USB2 are connected with the negative electrode USB- of the power supply. The interfaces A9 and B9 of the USB2 are electrically connected with the positive electrode USB+ of the power supply. The interface A5 of the USB2 is connected with the positive electrode USB+ of the power supply through the resistor R19. The interface B5 of the USB2 is connected with the positive electrode USB+ of the power supply through the resistor R18.

[0033] The model of the voltage reduction constant current chip U2 is 7120.

[0034] As shown in Figure 5As shown, the trigger module includes MOS tube Q4 and MOS tube Q5, the gate of the MOS tube Q4 is electrically connected with the 16th pin of the master chip U4, the gate of the MOS tube Q4 is also grounded through the resistance R11, the source of the MOS tube Q4 is electrically connected with the 6th pin of the master chip U4, the source of the MOS tube Q4 is also grounded through the resistance R12, the drain of the MOS tube Q4 is connected with the negative pole of the power supply USB-, the gate of the MOS tube Q5 is electrically connected with the negative pole of the power supply USB- through the resistance R13, the gate of the MOS tube Q5 is also grounded through the resistance R14, the drain of the MOS tube Q4 is electrically connected with the 10th pin of the master chip U4, and the source of the MOS tube Q4 is grounded.

[0035] The model of the master chip U4 is 0003AF4.

[0036] The socket USB2 is a Type-C output port, and the model of the step-down constant-current chip U2 is 7120. When an external chargeable electronic device is inserted into the socket USB2, the negative pole of the external battery is connected to the negative pole of the power supply of the trigger module, a trigger charging signal is provided to the 10th pin of the master chip U4, the master chip U4 outputs a start charging signal to the display screen OLED, the display screen OLED displays the output charging signal and the current percentage of the battery, and at the same time, the step-down constant-current chip U2 reduces the voltage of the battery of the flashlight from 8.2V to 5V to start charging the external chargeable electronic device. The MOS tube Q4 comparison circuit of the trigger module starts to compare the voltage, when the negative pole of the power supply detects that the voltage has reached 5V, the trigger module stops working and provides an output stop signal to the 5th pin of the master chip U4, and the display screen OLED is turned off.

[0037] As shown in the figure, Figure 6 The display module includes a display screen OLED, a capacitor C20 is connected between the 1st pin and the 2nd pin of the display screen OLED, a capacitor C16 is connected between the 3rd pin and the 4th pin of the display screen OLED, the 12th pin of the display screen OLED is grounded through the resistance R30, the 13th pin of the display screen OLED is grounded through the capacitor C17, the 14th pin of the display screen OLED is grounded through the capacitor C19, the capacitor C18 is connected in parallel with the capacitor C19, the 5th pin and the 8th pin of the display screen OLED are electrically connected with the drain of the MOS tube Q11, and the 9th, 10th and 11th pins of the display screen OLED are electrically connected with the 8th, 12th and 11th pins of the master chip U4 respectively.

[0038] When the flashlight is equipped with a rechargeable battery, that is, the positive terminal of the battery of the main light control module is connected to the charging battery through port B+, the other end (AD) of resistor R22 gets a high level signal, and is given to pin 20 of main control chip U4, which determines that a charging battery is equipped, and the main light LED1 starts to work in the working mode of the charging battery, and at the same time transmits a signal to the display module. When the trigger switch S1 is triggered, the main control chip U4 determines the brightness level of the main light LED1 according to the time / number of times of triggering of the switch S1, and the display screen OLED displays the corresponding level content. At the same time, the main control chip U4 outputs corresponding current through pin 17 or pin 3, so that the main light LED1 emits different brightness or mode brightness.

[0039] When the flashlight is equipped with a rechargeable battery, that is, the positive terminal of the battery of the main light control module is connected to the charging battery through port B+, the other end (AD) of resistor R22 gets a high level signal, and is given to pin 20 of main control chip U4, which determines that a charging battery is equipped, and the main light LED1 starts to work in the working mode of the charging battery, and at the same time transmits a signal to the display module. When the trigger switch S1 is triggered, the main control chip U4 determines the brightness level of the main light LED1 according to the time / number of times of triggering of the switch S1, and the display screen OLED displays the corresponding level content. At the same time, the main control chip U4 outputs corresponding current through pin 17 or pin 3, so that the main light LED1 emits different brightness or mode brightness.

[0040] When the Type-C port is connected to the USB1 port of the flashlight, the 5V+ voltage of the main light control module is in a high level state, the main control chip U4 gets a signal, and the signal can also be given to the main control chip U4 through the triggering of the switch S1 to control the functions of each level of the main light LED1, and the display screen OLED displays the corresponding content. When the flashlight works for a long time and the temperature is too high, the resistance R27 of the main control module overheats, the resistance value increases, the pins 18 and 19 of the main control chip U4 get a high level signal, and the output current of pin 17 or pin 3 of the main control chip U4 decreases, so that the brightness of the main light LED1 decreases, and at the same time the main control chip U4 controls the display screen OLED to display an overheating symbol.

[0041] No matter whether the flashlight is equipped with a rechargeable battery or a dry battery, the switch S1 must be triggered twice to enable the pin 17 or pin 3 of the main control chip U4, and the main light LED1 can emit brightness. If the switch S1 is triggered only once, the main control chip U4 controls the display screen OLED to display an unlocking symbol.

[0042] No matter whether the flashlight is equipped with a rechargeable battery or a dry battery, when AD or AD1 detects that the voltage is lower than the set value, the main control chip U4 controls the display screen OLED to display a low power symbol.

[0043] In several embodiments provided by the utility model, it should be understood that the disclosed device and method can be realized by other ways. For example, the device embodiments described above are only illustrative, for example, the division of the module or unit is only a logical function division, and another division mode can be used in actual implementation, for example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0044] The unit can be or can not be physically separated, and the components shown as units can be one physical unit or a plurality of physical units, that is, can be located in one place or can be distributed to a plurality of different places. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0045] In addition, the functional units in each embodiment of the application can be integrated in a processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0046] When the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on such understanding, the technical scheme of the embodiments of the application essentially or the part that contributes to the prior art or the whole or part of the technical scheme can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing an apparatus (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the method described in the embodiments of the application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk and various program code storage media.

[0047] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, any change or replacement within the technical scope disclosed by the application should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A dual power control circuit, characterized by comprising: It include: Charging module, voltage reduction module, trigger module for controlling the voltage reduction module, main light control module powered by dual power supply, main control module and display module, the charging module is electrically connected with the main control module, the voltage reduction module is connected with the output end of the charging module, the input end of the trigger module is connected with the voltage reduction module, the output end of the trigger module is connected with the main control module, and the main light control module is electrically connected with the main control module.

2. A dual power control circuit according to claim 1, characterized in that: The main control module includes main control chip U4, switch S1, MOS tube Q11, MOS tube Q12, resistor R26, resistor R27 and resistor R31, the No. 5 pin of the main control chip U4 is connected with the ground through the switch S1, the No. 19 pin of the main control chip U4 is connected with one end of the resistor R26, the No. 18 pin of the main control chip U4 is connected with the other end of the resistor R26, the other end of the resistor R26 is also connected with the source of the MOS tube Q12 through the resistor R27, the No. 2 pin of the main control chip U4 is electrically connected with the gate of the MOS tube Q12, the No. 7 pin of the main control chip U4 is electrically connected with the source of the MOS tube Q12, the drain of the MOS tube Q12 is electrically connected with the gate of the MOS tube Q11, the No. 9 pin of the main control chip U4 is electrically connected with the source of the MOS tube Q11, the resistor R31 is connected between the gate and the source of the MOS tube Q11, and the drain of the MOS tube Q11 is connected with the display module.

3. A dual supply control circuit according to claim 2, characterised in that: The main light control module includes voltage stabilizer U3, parallel MOS tube group, MOS tube Q10, diode D1 and main light LED1, the pin 2 of the voltage stabilizer U3 is grounded through capacitor C14, the pin 2 of the voltage stabilizer U3 is also electrically connected with the pin 9 of the main control chip U4, the pin 1 of the voltage stabilizer U3 is grounded, the pin 3 of the voltage stabilizer U3 is also connected with the positive electrode of the battery through resistance R25 and accessed to port B+, the pin 3 of the voltage stabilizer U3 is also electrically connected with the negative electrode of the diode D1, the negative electrode of the diode D1 is also grounded through capacitor C13, the positive electrode of the diode D1 is connected with 5V+ voltage, the positive electrode of the main light LED1 is connected with the positive electrode of the battery and accessed to port B+, the positive electrode of the main light LED1 is also grounded through capacitor C12, the negative electrode of the main light LED1 is connected with the drain of the parallel MOS tube group, the source of the parallel MOS tube group is grounded, the gate of the parallel MOS tube group is electrically connected with the pin 17 of the main control chip U4, the gate of the parallel MOS tube group is also grounded through resistance R24, the negative electrode of the main light LED1 is also connected with the drain of the MOS tube Q10, the source of the MOS tube Q10 is grounded through resistance R29, the gate of the MOS tube Q10 is electrically connected with the pin 4 of the main control chip U4, the gate of the MOS tube Q10 is also grounded through resistance R28, the port B+ is also electrically connected with one end of resistance R22, the other end of the resistance R22 is connected with the pin 20 of the main control chip U4, the other end of the resistance R22 is also grounded through resistance R23, capacitor C15 is connected with the resistance R23 in parallel, one end of resistance R5 is connected with 5V+ voltage, the other end of the resistance R5 is connected with the pin 13 of the main control chip U4, the other end of the resistance R5 is also connected with the port B- of the negative electrode of the battery through resistance R6, one end of resistance R20 is connected with the port 9AA+ of the dry battery, the other end of the resistance R20 is electrically connected with the pin 1 of the main control chip U4, the other end of the resistance R20 is also grounded through resistance R23, the resistance R23 is connected with capacitor C15 in parallel.

4. A dual supply control circuit according to claim 3, characterised in that: The parallel MOS tube group includes MOS tube Q7, MOS tube Q8 and MOS tube Q9, the gate of the MOS tube Q7 is connected with the gate of the MOS tube Q8 and the gate of the MOS tube Q9, the drain of the MOS tube Q7 is connected with the drain of the MOS tube Q8 and the drain of the MOS tube Q9, the source of the MOS tube Q7 is connected with the source of the MOS tube Q8 and the source of the MOS tube Q9.

5. A dual supply control circuit according to claim 3 or 4, characterised in that: The charging module includes a charging management chip U1, a socket USB1, MOS tubes Q1, Q2 and Q3, an inductor L1 and a diode D2, interfaces A12 and B12 of the socket USB1 are grounded, interfaces A5 and B5 of the socket USB1 are respectively grounded through resistors R4 and R3, interfaces A9 and B9 of the socket USB1 are connected to 5V+ voltage, the source of the MOS tube Q1 is connected to 5V+ voltage, the source and the gate of the MOS tube Q1 are electrically connected through a resistor R1, the drain of the MOS tube Q1 is electrically connected to pin 3 of the charging management chip U1 through the inductor L1, pin 3 of the charging management chip U1 is also connected to pin 4 of the charging management chip U1 through the diode D2, pin 4 of the charging management chip U1 is also grounded through a capacitor C3, the capacitor C3 is connected in parallel with a capacitor C4, one end of a resistor R7 is connected to the drain of the MOS tube Q1, the other end of the resistor R7 is grounded through a capacitor C2, the drain of the MOS tube Q1 is also grounded through a capacitor C1, the source of the MOS tube Q2 is grounded, the gate of the MOS tube Q2 is grounded through a resistor R2, the gate of the MOS tube Q2 is also electrically connected to pin 14 of a main control chip U4, the drain of the MOS tube Q2 is electrically connected to the gate of the MOS tube Q1, the drain of the MOS tube Q1 is also electrically connected to one end of a resistor R8, the other end of the resistor R8 is grounded through a resistor R9, pin 7 of the charging management chip U1 is electrically connected to the other end of the resistor R8, pin 8 of the charging management chip U1 is electrically connected to pin 15 of the main control chip U4, pin 6 of the charging management chip U1 is grounded through a resistor R10, pin 6 of the charging management chip U1 is grounded through a capacitor C5, a capacitor C6 is connected in parallel with the capacitor C5, pin 6 of the charging management chip U1 is electrically connected to the source of the MOS tube Q3, the gate of the MOS tube Q3 is grounded, the drain of the MOS tube Q3 is connected to a battery positive access port B+, the battery positive access port B+ is connected to the positive electrode of a battery pack, and the negative electrode of the battery pack is connected to a battery negative access port B-.

6. A dual supply control circuit according to claim 5, characterised in that: The step-down module comprises a step-down constant current chip U2, a socket USB2, an inductor L2 and a MOS tube Q6, a capacitor C9 is connected between the No.1 pin and the No.6 pin of the step-down constant current chip U2, the No.2 pin of the step-down constant current chip U2 is grounded, the No.3 pin of the step-down constant current chip U2 is electrically connected with one end of a resistor R17, the other end of the resistor R17 is grounded, the No.4 pin of the step-down constant current chip U2 is electrically connected with the No.16 pin of the main control chip U4, the No.5 pin of the step-down constant current chip U2 is electrically connected with the drain electrode of the MOS tube Q6, the gate electrode of the MOS tube Q6 is grounded through a resistor R15, the source electrode of the MOS tube Q6 is connected with the positive electrode access port B+ of the battery, the drain electrode of the MOS tube Q6 is also grounded through a capacitor C7, a capacitor C8 is connected in parallel with the capacitor C7, the No.6 pin of the step-down constant current chip U2 is also connected with one end of the inductor L2, the other end of the inductor L2 is electrically connected with the resistor R17 through a resistor R16, the other end of the inductor L2 is grounded through a capacitor C10, a capacitor C11 is connected in parallel with the capacitor C10, the other end of the inductor L2 is also electrically connected with the positive electrode USB+ of the power supply, the interfaces A12 and B12 of the socket USB2 are connected with the negative electrode USB- of the power supply, the interfaces A9 and B9 of the socket USB2 are electrically connected with the positive electrode USB+ of the power supply, the interface A5 of the socket USB2 is connected with the positive electrode USB+ of the power supply through a resistor R19, the interface B5 of the socket USB2 is connected with the positive electrode USB+ of the power supply through a resistor R18.

7. A dual supply control circuit according to claim 6, characterised in that: The trigger module comprises a MOS tube Q4 and a MOS tube Q5, the gate electrode of the MOS tube Q4 is electrically connected with the No.16 pin of the main control chip U4, the gate electrode of the MOS tube Q4 is also grounded through a resistor R11, the source electrode of the MOS tube Q4 is electrically connected with the No.6 pin of the main control chip U4, the source electrode of the MOS tube Q4 is also grounded through a resistor R12, the drain electrode of the MOS tube Q4 is connected with the negative electrode USB- of the power supply, the gate electrode of the MOS tube Q5 is electrically connected with the negative electrode USB- of the power supply through a resistor R13, the gate electrode of the MOS tube Q5 is also grounded through a resistor R14, the drain electrode of the MOS tube Q4 is electrically connected with the No.10 pin of the main control chip U4, and the source electrode of the MOS tube Q4 is grounded.

8. A dual supply control circuit according to claim 7, characterised in that: The display module comprises a display screen OLED, a capacitor C20 is connected between the No.1 pin and the No.2 pin of the display screen OLED, a capacitor C16 is connected between the No.3 pin and the No.4 pin of the display screen OLED, the No.12 pin of the display screen OLED is grounded through a resistor R30, the No.13 pin of the display screen OLED is grounded through a capacitor C17, the No.14 pin of the display screen OLED is grounded through a capacitor C19, a capacitor C18 is connected in parallel with the capacitor C19, the No.5 pin and the No.8 pin of the display screen OLED are both electrically connected with the drain electrode of a MOS tube Q11, the No.9, 10 and 11 pins of the display screen OLED are respectively electrically connected with the No.8, 12 and 11 pins of the main control chip U4.

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