Direct-current carbon igniter

Abstract

The direct-current charcoal lighter comprises a charcoal lighter body, a heating wire is arranged on the top face of the charcoal lighter body, and a main control board used for being connected with a mobile power source and the heating wire and enabling the heating wire to heat charcoal is arranged in the charcoal lighter body. The main control board is provided with a power supply input circuit which is connected with the mobile power supply and has an overvoltage protection function, an output driving circuit which is connected with the power supply input circuit and the heating wire and is used for outputting a driving power supply to the heating wire, and a main control circuit which is connected with the output driving circuit and is used for controlling the heating wire. The voltage detection circuit is connected with the main control circuit and is used for detecting the output voltage of the output driving circuit, the power supply circuit is connected with the main control circuit and is used for supplying power, the mobile power supply is connected with the main control board of the charcoal lighter to supply power, and the main control board controls the output power supply to the heating wire, so that the heating wire emits heat to heat and ignite charcoal. And the function of quickly igniting charcoal is realized.

Description

[Technical field]

[0001] The invention relates to a direct current carbon igniter. [Background Technology]

[0002] The conventional method of igniting charcoal is to burn it with an open flame, but this method has the problem that the open flame is easy to cause danger. At the same time, using gas to ignite charcoal has the problem of wasting gas and operating dangers. When igniting charcoal with an open flame such as a combustion aid outdoors, it is easy to cause the accumulated charcoal to lack oxygen and cannot ignite the open flame, and other operational problems. [Summary of the invention]

[0003] The invention overcomes the shortcomings of the prior art and provides a direct current carbon igniter.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A DC charcoal lighter, characterized in that it includes a charcoal lighter body, a heating wire is arranged on the top surface of the charcoal lighter body, a main control board is arranged inside the charcoal lighter body, which is used to connect with a mobile power source and the heating wire so that the heating wire heats charcoal, the main control board is provided with a power input circuit connected to the mobile power source and having an overvoltage protection function, an output drive circuit connected to the power input circuit and the heating wire respectively for outputting a driving power to the heating wire, a main control circuit connected to the output drive circuit for controlling the heating wire, a voltage detection circuit connected to the main control circuit for detecting the output voltage of the output drive circuit, and a power supply circuit connected to the main control circuit for supplying power.

[0006] The DC charcoal lighter as described above is characterized in that a light indicating circuit connected to the main control circuit and the power supply circuit for indicating the working status is provided on the main control board.

[0007] The DC carbon igniter as described above is characterized in that: a burning circuit connected to the main control circuit and the power supply circuit respectively for burning a program into the main control circuit is provided on the main control board.

[0008] A DC charcoal lighter as described above, characterized in that: the power input circuit includes an interface P101 and an overvoltage protection chip U1, and the interface P101 is a Type-C interface, the interface P101 pin A1 and pin B12 are grounded respectively, the interface P101 pin A2 is respectively connected to one end of capacitor C2, interface P101 pin A9, one end of capacitor C1, the positive end of electrolytic capacitor EC104, interface P101 pin B9, interface P101 pin B4, one end of resistor R1, one end of resistor R2, one end of capacitor C11, voltage detection circuit, power supply circuit, one end of resistor R8, the other end of capacitor C2, the other end of capacitor C1, the negative end of electrolytic capacitor EC104, the other end of capacitor C11, interface P101 pin A12, and interface P101 pin B1 are grounded respectively, and the other end of resistor R8 is connected to the overvoltage The protection chip U1 is connected to pin 8, the interface P101 pin A5 is connected to pin 7 of the overvoltage protection chip U1, the interface P101 pin A6 is respectively connected to pin B6 of the interface P101 and one end of the resistor R3, the other end of the resistor R3 is connected to pin 4 of the overvoltage protection chip U1, the interface P101 pin A7 is respectively connected to pin B7 of the interface P101 and one end of the resistor R4, the other end of the resistor R4 is connected to pin 5 of the overvoltage protection chip U1, the interface P101 pin B5 is connected to pin 6 of the overvoltage protection chip U1, pin 9 of the overvoltage protection chip U1 is grounded through resistor R5, pin 0 of the overvoltage protection chip U1 is grounded, and pin 1 of the overvoltage protection chip U1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2, one end of the capacitor C3, and one end of the capacitor C10, and the other end of the capacitor C3 and the other end of the capacitor C10 are grounded respectively.

[0009] A DC charcoal lighter as described above is characterized in that: the output drive circuit includes a MOS tube Q403, the source end of the MOS tube Q403 is grounded, the drain end of the MOS tube Q403 is connected to the connection point J2, the connection point J2 is connected to one end of the heating wire, the gate end of the MOS tube Q403 is respectively connected to one end of the capacitor C106, one end of the resistor R111, and one end of the resistor R122, the other end of the capacitor C106 and the other end of the resistor R111 are respectively grounded, and the other end of the resistor R122 is connected to the collector of the transistor Q1 The transistor Q1 emitter is connected to one end of the resistor R115, one end of the inductor L101, the power input circuit, and the connection point J1 respectively. The connection point J1 is connected to the other end of the heating wire. The other end of the inductor L101 is grounded through the capacitor C117. The transistor Q1 base is connected to the other end of the resistor R115 and one end of the resistor R123 respectively. The other end of the resistor R123 is connected to the collector of the transistor Q104. The emitter of the transistor Q104 is grounded. The base of the transistor Q104 is connected to one end of the resistor R116. One end of the resistor R113 is connected, and the other end of the resistor R116 is grounded. The other end of the resistor R113 is connected to the main control circuit and one end of the resistor R125 respectively. The other end of the resistor R125 is connected to the positive end of the lamp LED101, and the negative end of the lamp LED101 is grounded.

[0010] A DC charcoal lighter as described above is characterized in that: the main control circuit includes a main control chip U2, pin 1 and pin 8 of the main control chip U2 are respectively connected to the burning circuit, pin 2 of the main control chip U2 is connected to the light indication circuit, pin 3 of the main control chip U2 is respectively connected to one end of the switch button S1, one end of the capacitor C13, and one end of the resistor R15, the other end of the capacitor C13 and the other end of the resistor R15 are respectively grounded, the other end of the switch button S1 is connected to the power supply circuit, pin 4 of the main control chip U2 is grounded, pin 5 of the main control chip U2 is connected to the voltage detection circuit, pin 6 of the main control chip U2 is respectively connected to the power supply circuit, one end of the capacitor C9, and one end of the capacitor C8, the other end of the capacitor C9 and the other end of the capacitor C8 are respectively grounded, and pin 7 of the main control chip U2 is connected to the output drive circuit.

[0011] A DC charcoal lighter as described above is characterized in that: the voltage detection circuit includes a capacitor C117, one end of the capacitor C117 is respectively connected to the main control circuit, one end of the resistor R114, and one end of the resistor R112, the other end of the capacitor C117 and the other end of the resistor R114 are respectively grounded, and the other end of the resistor R112 is connected to the power input circuit.

[0012] A DC charcoal lighter as described above is characterized in that: the power supply circuit includes a power supply chip U3, the pin 1 of the power supply chip U3 is respectively connected to one end of capacitor C4, one end of capacitor C5, and the power input circuit, the pin 3 of the power supply chip U3 is respectively connected to one end of capacitor C7 and one end of capacitor C6, the other end of capacitor C5, the other end of capacitor C4, the pin 1 of the power supply chip U3, the other end of capacitor C7, and the other end of capacitor C6 are respectively grounded, and the pin 3 of the power supply chip U3 outputs a 3V3 power supply to supply power to the main control circuit, the light indication circuit, and the burning circuit respectively.

[0013] The DC charcoal lighter as described above is characterized in that the light indication circuit includes an indicator light LED102, the positive terminal of the indicator light LED102 is connected to the power supply circuit through a resistor R124, and the negative terminal of the indicator light LED102 is connected to the main control circuit.

[0014] The DC carbon igniter as described above is characterized in that: the burning circuit includes a connection terminal P103, the connection terminal P10 pins 1-2 are respectively connected to the main control circuit, the connection terminal P103 pin 3 is connected to the power supply circuit, and the connection terminal P103 pin 4 is grounded.

[0015] The beneficial effects of the present invention are:

[0016] The present invention places charcoal on a heating wire, connects a mobile power source to a main control board of a charcoal lighter for power supply, and controls the output power to the heating wire through the main control board, so that the heating wire heats up to heat and ignite the charcoal, thereby realizing the function of quickly igniting the charcoal. The present invention is simple to operate, easy to carry, and has low danger. It can be powered by a mobile power source and has a simple structure. [Drawings]

[0017] Figure 1 This is the circuit diagram of the main control board of the present invention. [Specific implementation method]

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0020] like Figure 1 As shown, a DC charcoal igniter includes a charcoal igniter body, a heating wire is arranged on the top surface of the charcoal igniter body, a main control board for connecting with a mobile power source and the heating wire to make the heating wire heat charcoal is arranged inside the charcoal igniter body, and a power input circuit 1 connected with the mobile power source and having an overvoltage protection function is arranged on the main control board, an output drive circuit 7 connected with the power input circuit 1 and the heating wire respectively to output a driving power to the heating wire, a main control circuit 4 connected with the output drive circuit 7 to control the heating wire, a voltage detection circuit 3 connected with the main control circuit 4 to detect the output voltage of the output drive circuit 7, and a power supply circuit 2 connected with the main control circuit 4 to supply power. In actual use, charcoal is placed on the heating wire of the charcoal igniter, and the mobile power source is connected to the power input circuit 1 of the main control board, and the input power of the power input circuit 1 is stepped down by the power supply circuit 2 to supply power to the main control circuit 4, and at the same time, the power input circuit 1 supplies power to the output drive circuit 7. After pressing the switch of the main control circuit 4, the main control circuit 4 works and controls the input drive circuit 7 to make the heating wire heat up and ignite the charcoal. At the same time, the voltage detection circuit 3 detects the working voltage of the output drive circuit 7 through the main control circuit 4 and feeds it back to the power input circuit 1. When the working voltage exceeds the protection voltage of the power input circuit 1, the power input circuit 1 performs overvoltage protection.

[0021] like Figure 1 As shown, the main control board is provided with a light indicating circuit 6 connected to the main control circuit 4 and the power supply circuit 2 for indicating the working state. In actual use, after pressing the switch of the main control circuit 4, the light indicating circuit 6 works to illuminate and prompt the working state.

[0022] like Figure 1 As shown, the main control board is provided with a burning circuit 5 connected to the main control circuit 4 and the power supply circuit 2 respectively for burning the program to the main control circuit 4. When the program needs to be debugged, the burning circuit 5 is connected to communicate with the main control circuit 4 to realize debugging.

[0023] like Figure 1 As shown, the power input circuit 1 includes an interface P101 and an overvoltage protection chip U1, and the interface P101 is a Type-C interface, the interface P101 pin A1 and pin B12 are grounded respectively, the interface P101 pin A2 is respectively connected to one end of the capacitor C2, the interface P101 pin A9, one end of the capacitor C1, the positive end of the electrolytic capacitor EC104, the interface P101 pin B9, the interface P101 pin B4, one end of the resistor R1, one end of the resistor R2, one end of the capacitor C11, the voltage detection circuit 3, the power supply circuit 2, and one end of the resistor R8, the other end of the capacitor C2, the other end of the capacitor C1, the negative end of the electrolytic capacitor EC104, the other end of the capacitor C11, the interface P101 pin A12, and the interface P101 pin B1 are grounded respectively, and the other end of the resistor R8 is connected to the overvoltage protection chip U1 pin The pin 8 of the overvoltage protection chip U1 is connected to the pin 7 of the overvoltage protection chip U1, the pin A6 of the interface P101 is respectively connected to the pin B6 of the interface P101 and one end of the resistor R3, and the other end of the resistor R3 is connected to the pin 4 of the overvoltage protection chip U1, the pin A7 of the interface P101 is respectively connected to the pin B7 of the interface P101 and one end of the resistor R4, and the other end of the resistor R4 is connected to the pin 5 of the overvoltage protection chip U1, the pin B5 of the interface P101 is connected to the pin 6 of the overvoltage protection chip U1, the pin 9 of the overvoltage protection chip U1 is grounded through the resistor R5, the pin 0 of the overvoltage protection chip U1 is grounded, and the pin 1 of the overvoltage protection chip U1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2, one end of the capacitor C3, and one end of the capacitor C10, and the other end of the capacitor C3 and the other end of the capacitor C10 are grounded respectively. In actual use, the power line connection end of the mobile power supply is connected to the Type-C interface P101 to realize power supply to the main control board of the charcoal lighter, and to the power supply circuit 2 and the output drive circuit 7. At the same time, when the working voltage of the carbon igniter detected by the overvoltage protection chip U1 through the voltage detection circuit 3 exceeds the overvoltage protection voltage, the overvoltage protection chip U1 performs overvoltage protection.

[0024] like Figure 1As shown, the output drive circuit 7 includes a MOS transistor Q403, the source terminal of the MOS transistor Q403 is grounded, the drain terminal of the MOS transistor Q403 is connected to the connection point J2, the connection point J2 is connected to one end of the heating wire, the gate terminal of the MOS transistor Q403 is respectively connected to one end of the capacitor C106, one end of the resistor R111, and one end of the resistor R122, the other end of the capacitor C106 and the other end of the resistor R111 are respectively grounded, the other end of the resistor R122 is connected to the collector of the transistor Q1, and the transistor Q1 The emitter is connected to one end of the resistor R115, one end of the inductor L101, the power input circuit 1, and the connection point J1 respectively. The connection point J1 is connected to the other end of the heating wire. The other end of the inductor L101 is grounded through the capacitor C117. The base of the transistor Q1 is connected to the other end of the resistor R115 and one end of the resistor R123 respectively. The other end of the resistor R123 is connected to the collector of the transistor Q104. The emitter of the transistor Q104 is grounded. The base of the transistor Q104 is connected to one end of the resistor R116. One end of the resistor R113 is connected, and the other end of the resistor R116 is grounded. The other end of the resistor R113 is connected to the main control circuit 4 and one end of the resistor R125 respectively. The other end of the resistor R125 is connected to the positive end of the lamp LED101, and the negative end of the lamp LED101 is grounded. In actual use, by controlling the on-off operation of the transistor Q104, the transistor Q1 and the MOS tube Q403 are turned on and off, thereby controlling the output power at both ends of the heating wire, so that the heating wire heats up and ignites the charcoal.

[0025] like Figure 1 As shown, the main control circuit 4 includes a main control chip U2, the pin 1 and pin 8 of the main control chip U2 are respectively connected to the burning circuit 5, the pin 2 of the main control chip U2 is connected to the light indication circuit 6, the pin 3 of the main control chip U2 is respectively connected to one end of the switch button S1, one end of the capacitor C13, and one end of the resistor R15, the other end of the capacitor C13 and the other end of the resistor R15 are respectively grounded, the other end of the switch button S1 is connected to the power supply circuit 2, the pin 4 of the main control chip U2 is grounded, the pin 5 of the main control chip U2 is connected to the voltage detection circuit 3, the pin 6 of the main control chip U2 is respectively connected to the power supply circuit 2, one end of the capacitor C9, and one end of the capacitor C8, the other end of the capacitor C9 and the other end of the capacitor C8 are respectively grounded, and the pin 7 of the main control chip U2 is connected to the output drive circuit 7. In actual use, after pressing the switch button S1 to start, the main control chip U2 inputs a drive signal to the output drive circuit 7, so that the output drive circuit 7 controls the heating wire to heat up, and at the same time controls the light indication circuit 6 to emit light through the pin 2 of the main control chip U2 to indicate the working state.

[0026] like Figure 1As shown, the voltage detection circuit 3 includes a capacitor C117, one end of the capacitor C117 is respectively connected to the main control circuit 4, one end of the resistor R114, and one end of the resistor R112, the other end of the capacitor C117 and the other end of the resistor R114 are respectively grounded, and the other end of the resistor R112 is connected to the power input circuit 1. In actual use, the working voltage of the output drive circuit 7 is detected by the main control circuit 4 and fed back to the power input circuit 1.

[0027] like Figure 1 As shown, the power supply circuit 2 includes a power supply chip U3, the pin 1 of the power supply chip U3 is respectively connected to one end of the capacitor C4, one end of the capacitor C5, and the power input circuit 1, the pin 3 of the power supply chip U3 is respectively connected to one end of the capacitor C7 and one end of the capacitor C6, the other end of the capacitor C5, the other end of the capacitor C4, the pin 1 of the power supply chip U3, the other end of the capacitor C7, and the other end of the capacitor C6 are respectively grounded, and the pin 3 of the power supply chip U3 outputs a 3V3 power supply to supply power to the main control circuit 4, the light indication circuit 6, and the burning circuit 5. In actual use, the power supply chip U3 steps down the power input circuit 1 and outputs a 3V3 voltage to supply power to other circuits.

[0028] like Figure 1 As shown, the light indication circuit 6 includes an indicator light LED 102, the positive terminal of the indicator light LED 102 is connected to the power supply circuit 2 through a resistor R124, and the negative terminal of the indicator light LED 102 is connected to the main control circuit 4. In actual use, the main control chip U2 inputs a control signal to make the indicator light LED 102 work and emit light to indicate the working state.

[0029] like Figure 1 As shown, the burning circuit 5 includes a connection terminal P103, the connection terminal P10 pins 1-2 are respectively connected to the main control circuit 4, the connection terminal P103 pin 3 is connected to the power supply circuit 2, and the connection terminal P103 pin 4 is grounded. When burning the adjustment program, the connection terminal P103 is connected to realize the communication connection with the main control circuit 1 for debugging.

[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A direct current carbon igniter, characterized in that: The charcoal igniter comprises a main body, a heating wire is arranged on the top surface of the main body, a main control board is arranged inside the main body and is used to connect with a mobile power source and the heating wire so that the heating wire heats charcoal, the main control board is provided with a power input circuit (1) connected with the mobile power source and having an overvoltage protection function, an output drive circuit (7) connected with the power input circuit (1) and the heating wire respectively and used to output drive power to the heating wire, a main control circuit (4) connected with the output drive circuit (7) and used to control the heating wire, a voltage detection circuit (3) connected with the main control circuit (4) and used to detect the output voltage of the output drive circuit (7), and a power supply circuit (2) connected with the main control circuit (4) and used to supply power.

2. A direct current carbon igniter according to claim 1, characterized in that: The main control board is provided with a light indicating circuit (6) which is connected to the main control circuit (4) and the power supply circuit (2) respectively and is used to indicate the working status.

3. A direct current carbon igniter according to claim 2, characterized in that: The main control board is provided with a burning circuit (5) which is connected to the main control circuit (4) and the power supply circuit (2) respectively and is used for burning a program into the main control circuit (4).

4. A direct current carbon igniter according to claim 1, characterized in that: The power input circuit (1) includes an interface P101 and an overvoltage protection chip U1, and the interface P101 is a Type-C interface. The interface P101 pin A1 and pin B12 are grounded respectively. The interface P101 pin A2 is connected to one end of a capacitor C2, the interface P101 pin A9, one end of a capacitor C1, the positive end of an electrolytic capacitor EC104, the interface P101 pin B9, the interface P101 pin B4, one end of a resistor R1, one end of a resistor R2, one end of a capacitor C11, a voltage detection circuit (3), a power supply circuit (2), and one end of a resistor R8. The other end of the capacitor C2, the other end of the capacitor C1, the negative end of the electrolytic capacitor EC104, the other end of the capacitor C11, the interface P101 pin A12, and the interface P101 pin B1 are grounded respectively. The other end of the resistor R8 is connected to the overvoltage protection chip U1. 1 pin 8 is connected, interface P101 pin A5 is connected to the overvoltage protection chip U1 pin 7, interface P101 pin A6 is respectively connected to interface P101 pin B6 and one end of resistor R3, the other end of resistor R3 is connected to pin 4 of overvoltage protection chip U1, interface P101 pin A7 is respectively connected to interface P101 pin B7 and one end of resistor R4, the other end of resistor R4 is connected to pin 5 of overvoltage protection chip U1, interface P101 pin B5 is connected to pin 6 of overvoltage protection chip U1, pin 9 of overvoltage protection chip U1 is grounded through resistor R5, pin 0 of overvoltage protection chip U1 is grounded, pin 1 of overvoltage protection chip U1 is respectively connected to the other end of resistor R1, the other end of resistor R2, one end of capacitor C3 and one end of capacitor C10, the other end of capacitor C3 and the other end of capacitor C10 are grounded respectively.

5. A direct current carbon igniter according to claim 1, characterized in that: The output drive circuit (7) includes a MOS tube Q403, the source end of the MOS tube Q403 is grounded, the drain end of the MOS tube Q403 is connected to the connection point J2, the connection point J2 is connected to one end of the heating wire, the gate end of the MOS tube Q403 is respectively connected to one end of the capacitor C106, one end of the resistor R111, and one end of the resistor R122, the other end of the capacitor C106 and the other end of the resistor R111 are respectively grounded, the other end of the resistor R122 is connected to the collector of the transistor Q1, and the emitter of the transistor Q1 is connected to the collector of the transistor Q1. The electrodes are respectively connected to one end of the resistor R115, one end of the inductor L101, the power input circuit (1), and the connection point J1. The connection point J1 is connected to the other end of the heating wire. The other end of the inductor L101 is grounded through the capacitor C117. The base of the transistor Q1 is respectively connected to the other end of the resistor R115 and one end of the resistor R123. The other end of the resistor R123 is connected to the collector of the transistor Q104. The emitter of the transistor Q104 is grounded. The base of the transistor Q104 is respectively connected to one end of the resistor R116. One end of the resistor R113 is connected, and the other end of the resistor R116 is grounded. The other end of the resistor R113 is respectively connected to the main control circuit (4) and one end of the resistor R125. The other end of the resistor R125 is connected to the positive end of the lamp LED101, and the negative end of the lamp LED101 is grounded.

6. A direct current carbon igniter according to claim 3, characterized in that: The main control circuit (4) comprises a main control chip U2, wherein pins 1 and 8 of the main control chip U2 are respectively connected to the burning circuit (5), pin 2 of the main control chip U2 is connected to the light indication circuit (6), pin 3 of the main control chip U2 is respectively connected to one end of a switch button S1, one end of a capacitor C13, and one end of a resistor R15, the other end of the capacitor C13 and the other end of the resistor R15 are respectively grounded, the other end of the switch button S1 is connected to the power supply circuit (2), pin 4 of the main control chip U2 is grounded, pin 5 of the main control chip U2 is connected to the voltage detection circuit (3), pin 6 of the main control chip U2 is respectively connected to the power supply circuit (2), one end of a capacitor C9, and one end of a capacitor C8, the other end of the capacitor C9 and the other end of the capacitor C8 are respectively grounded, and pin 7 of the main control chip U2 is connected to the output drive circuit (7).

7. A direct current carbon igniter according to claim 1, characterized in that: The voltage detection circuit (3) includes a capacitor C117, one end of the capacitor C117 is respectively connected to the main control circuit (4), one end of the resistor R114, and one end of the resistor R112, the other end of the capacitor C117 and the other end of the resistor R114 are respectively grounded, and the other end of the resistor R112 is connected to the power input circuit (1).

8. A direct current carbon igniter according to claim 3, characterized in that: The power supply circuit (2) includes a power supply chip U3, wherein a pin 1 of the power supply chip U3 is respectively connected to one end of a capacitor C4, one end of a capacitor C5, and a power input circuit (1), and a pin 3 of the power supply chip U3 is respectively connected to one end of a capacitor C7 and one end of a capacitor C6, and the other end of the capacitor C5, the other end of the capacitor C4, the pin 1 of the power supply chip U3, the other end of the capacitor C7, and the other end of the capacitor C6 are respectively grounded, and the pin 3 of the power supply chip U3 outputs a 3V3 power supply to supply power to a main control circuit (4), a light indication circuit (6), and a burning circuit (5).

9. A direct current carbon igniter according to claim 2, characterized in that: The light indication circuit (6) comprises an indicator light LED 102, wherein the positive terminal of the indicator light LED 102 is connected to the power supply circuit (2) via a resistor R124, and the negative terminal of the indicator light LED 102 is connected to the main control circuit (4).

10. A direct current carbon igniter according to claim 3, characterized in that: The burning circuit (5) comprises a connection terminal P103, wherein pins 1-2 of the connection terminal P10 are respectively connected to the main control circuit (4), pin 3 of the connection terminal P103 is connected to the power supply circuit (2), and pin 4 of the connection terminal P103 is grounded.

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