CN111711252A - An electrostatic sprayer control circuit - Google Patents

Abstract

The invention provides a control circuit for an electrostatic sprayer, which includes a single-pole double-throw switch, a first socket, a relay, a second socket, a high-voltage module and a diode, which can selectively spray uncharged and charged droplets according to actual use requirements, while stabilizing When the voltage of the battery is unstable, the voltage circuit can stabilize the voltage to ensure that the voltage output to the booster device is always stable, which solves the problem that the internal voltage of the battery in the current electrostatic sprayer equipment is unstable, resulting in the booster device. The final output voltage is lower or higher than the set output voltage, so that the charging ability of the droplets is reduced, the adsorption capacity of the sprayed object is weakened, and the pesticide droplets that are not adsorbed by the sprayed object drift to the ground, causing environmental pollution and Waste of resources, unsatisfactory spraying effect and inability to choose to spray charged or uncharged droplets according to actual use requirements, inconvenient to use and reduce work efficiency.

Description

An electrostatic sprayer control circuit

technical field

The invention relates to the technical field of electrostatic spray equipment, in particular to an electrostatic sprayer control circuit.

Background technique

Electrostatic spraying technology uses high-voltage static electricity to establish an electrostatic field between the nozzle and the spray target, and after the pesticide fluid is atomized by the nozzle, it is charged through the internal charging device to form a group of charged droplets, which are then charged by the electrostatic field force. Under the combined action of the air flow blown by the internal fan, the droplets move in a directional motion and are adsorbed on various parts of the target, achieving good performance such as high deposition efficiency, less droplet drift and loss, and improved ecological environment. It is more convenient to use a battery-powered electrostatic sprayer device for spraying. Its internal circuit is generally composed of a battery and a booster module, but due to the characteristics of the battery, the internal voltage of the battery is in real-time during the working process. The internal voltage of the battery will be high when it starts to work, and the voltage will gradually decrease after the battery works for a period of time, resulting in the final output voltage of the booster device being lower or higher than the set output voltage, so that the droplets are charged. The ability is reduced, the adsorption capacity of the sprayed object is weakened, and the pesticide droplets that are not absorbed by the sprayed object drift to the ground, causing environmental pollution and waste of resources, and the spraying effect is not ideal. At the same time, the existing electrostatic spray spraying mode is very simple, only It can spray charged droplets, but the charged spray is better for surface disinfection, and the uncharged spray is better for air disinfection. When sterilizing the air, a non-static spraying device is required. Spraying work reduces work efficiency.

SUMMARY OF THE INVENTION

The embodiment of the present invention provides an electrostatic sprayer control circuit. By adding a voltage stabilizer circuit and a control circuit to the existing electrostatic sprayer equipment, uncharged and charged droplets can be selectively sprayed according to actual use requirements, while the voltage stabilizer circuit can be sprayed. When the battery voltage is unstable, the voltage can be regulated to ensure that the voltage output to the booster device is always stable, which solves the problem that the internal voltage of the battery in the current electrostatic sprayer equipment is unstable, resulting in the final output of the booster device. The voltage is lower than or higher than the set output voltage, so that the charging ability of the droplets is reduced, the adsorption capacity of the sprayed object is weakened, and the pesticide droplets that are not adsorbed by the sprayed object are scattered to the ground, causing environmental pollution and waste of resources. , the spraying effect is not ideal and the spraying of charged or uncharged droplets cannot be selected according to actual use requirements, which is inconvenient to use and reduces work efficiency.

In view of the above problems, the technical scheme proposed by the present invention is:

An electrostatic sprayer control circuit, comprising a SPDT switch, a first socket, a relay, a second socket, a high-voltage module and a diode; the first socket is respectively connected with the SPDT switch, the relay, the second socket The socket is electrically connected to the diode, and the second socket is electrically connected to the high-voltage module;

The power input IN V+ terminal is electrically connected to the 2-pin of the first socket and the 3-pin of the relay, and the 1-pin of the SPDT switch is electrically connected to the 2-pin of the first socket. The 1-pin of the first socket is electrically connected with the 2-pin of the SPDT switch, the 1-pin of the relay and one end of the diode, and the 3-pin of the first socket is electrically connected. It is electrically connected to the 3-pin of the SPDT switch, the 1-pin of the second socket and the other end of the diode, and the 2-pin of the second socket is connected to the power input IN V- end, GND , the power output OUT V- terminal is electrically connected with the 2-pin of the relay, the 4-pin of the relay is electrically connected with the power input OUT V+ terminal, and the 1-pin of the second socket is electrically connected with the high-voltage module. electrical connection;

The high-voltage module includes a voltage-stabilizing module and a boosting module, the power supply input end of the voltage-stabilizing module is electrically connected to the 1 pin of the second socket, and the power supply input end of the voltage-stabilizing module is electrically connected to the booster module. The power input terminal of the module is electrically connected;

The voltage regulator module includes a TVS diode, a frequency setting resistor, a voltage divider circuit, a step-down conversion chip, a compensation circuit and an enabling control circuit; the compensation circuit includes a capacitor C4 and a resistor R6; the TVS diode It is electrically connected to pin 1 of the second socket, and the step-down conversion chip is respectively connected to the TVS diode, the frequency setting resistor, the voltage divider circuit, the compensation circuit and the an enabling control circuit is electrically connected, and the TVS diode is electrically connected to the enabling control circuit;

Wherein, pin 1 of the second socket is electrically connected to one end of the transient suppression diode, capacitor C2, resistor R1, and pin 7 of the step-down conversion chip, and the transient suppression diode, capacitor C2 The other end of the resistor R1 is electrically connected to GND, the other end of the resistor R1 is electrically connected to the 2-pin of the step-down conversion chip and one end of the resistor R5, and the other end of the resistor R5 is electrically connected to GND; the frequency setting resistor One end is electrically connected to the 6-pin of the step-down conversion chip, and the other end of the frequency setting resistor is electrically connected to GND; the 5-pin of the step-down conversion chip is electrically connected to GND, and the The 8-pin of the voltage conversion chip is electrically connected to one end of the capacitor C1, the other end of the capacitor C1 is electrically connected to the 1-pin of the step-down conversion chip, the diode D2 and one end of the energy storage inductor L1, and the other end of the diode D2 is electrically connected. One end is electrically connected to GND, the 3-pin of the step-down conversion chip is electrically connected to one end of the capacitor C4, the other end of the capacitor C4 is electrically connected to one end of the resistor R6, and the other end of the resistor R6 is electrically connected to GND , the 4 pins of the step-down conversion chip are electrically connected to one end of the resistor R3 and the resistor R7, the other end of the resistor R7 is electrically connected to GND, the other end of the resistor R3 is electrically connected to one end of the resistor R2, and the load terminal V_12 is electrically connected to the other end of the inductor L1, the other end of the resistor R2, one end of the capacitor C3 and the boosting module, and the other end of the capacitor C3 is electrically connected to GND.

In order to better realize the technical solution of the present invention, the following technical measures are also adopted.

Further, the power input IN V+ terminal and the power input IN V- terminal are respectively used to connect the positive and negative terminals of the battery power supply, and the power input OUT V+ terminal and the power output OUT V- terminal are respectively used to connect the positive and negative terminals of the fan.

Further, the high voltage module is used to increase the voltage output by the battery to 20,000 volts.

Further, the voltage stabilization module is used to stabilize the voltage output by the battery.

Further, the voltage dividing circuit includes a resistor R2, a resistor R3 and a resistor R7, and the resistor R2, the resistor R3 and the resistor R7 are connected in series to feed back the output voltage to the step-down conversion chip and compare it with the internal reference value, so that the output can be output. The voltage meets the set output requirements.

Further, the enabling control circuit includes a resistor R1 and a resistor R5 for controlling the step-down conversion chip to be turned on and off.

Compared with the prior art, the beneficial effects of the present invention are:

1. By setting the SPDT switch, the first socket, the relay, the second socket, the high voltage module and the diode, by adjusting the 1 pin of the SPDT switch and the 2 pins of the SPDT switch and the SPDT switch respectively. The 3 pins are on or off, causing the high-voltage module to be powered on or off. When the high-voltage module is powered on, the spray droplets are charged, and when the high-voltage module is not powered on, the spray droplets are not charged, so that the electrostatic sprayer The spraying mode can be changed according to actual needs. When sterilizing the surface of the object, the high-pressure module is turned on to make the sprayed droplets charged, which is better for surface disinfection. When the air is sterilized, the high-pressure module is turned off to make the sprayed mist The drop has no charge, and it is more effective for air disinfection. One machine can achieve two functions, which is more convenient to use and improves work efficiency.

2. By setting the voltage regulator circuit, when the output voltage becomes high, the voltage divided by the voltage divider circuit composed of resistor R2, resistor R3 and resistor R7 also becomes higher, and it is fed back to pin 4 of the step-down conversion chip. , after the internal error amplifier is compared with the internal reference voltage, the internal MOSFET is controlled to reduce the output voltage until the output voltage reaches a stable output voltage. When the output voltage becomes low, the voltage is divided by resistor R2, resistor R3 and resistor R7. After the voltage also becomes lower, it is fed back to the 4-pin of the step-down conversion chip. After the error amplifier inside the step-down conversion chip is compared with the internal reference voltage, the internal MOSFET tube is controlled to increase the output voltage drop until it reaches a stable voltage. Output state to ensure that the voltage output to the booster device is always stable, so that the charging ability of the droplets remains stable, which solves the problem of the internal voltage instability of the battery existing in the current electrostatic sprayer equipment, resulting in the final output voltage of the booster device is low. At or above the set output voltage, the charging ability of the droplets will decrease, the adsorption capacity of the sprayed object will be weakened, and the pesticide droplets not adsorbed by the sprayed object will drift to the ground, causing environmental pollution and waste of resources. Not ideal question.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

Description of drawings

1 is a schematic structural diagram of an electrostatic sprayer control circuit disclosed in an embodiment of the present invention;

Fig. 2 is a schematic diagram of partial current flow after the connection between pin 1 of the SPDT switch and pin 2 of the SPDT switch in Fig. 1;

Fig. 3 is a schematic diagram of partial current flow after the connection between pin 1 of the SPDT switch and pin 3 of the SPDT switch in Fig. 1;

4 is a schematic diagram of a connection structure between a voltage regulator module and a booster module disclosed in an embodiment of the present invention;

FIG. 5 is a circuit diagram of a voltage regulator module disclosed in an embodiment of the present invention.

Reference number:

1-SPDT switch; 2-First socket; 3-Relay; 4-Second socket; 5-High voltage module; 501-Voltage voltage module; 5011-TVS diode; Voltage divider circuit; 5014-buck conversion chip; 5015-compensation circuit; 5016-enable control circuit; 502-boost module; 6-diode.

specific embodiment

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Referring to Figures 1-5, an electrostatic sprayer control circuit includes a SPDT switch 1, a first socket 2, a relay 3, a second socket 4, a high-voltage module 5 and a diode 6; the first socket 2 They are respectively electrically connected to the SPDT switch 1, the relay 3, the second socket 4 and the diode 6, and the second socket 4 is electrically connected to the high-voltage module 5, wherein the power input The IN V+ terminal is electrically connected to the 2-pin of the first socket 2 and the 3-pin of the relay 3, and the 1-pin of the SPDT switch 1 is electrically connected to the 2-pin of the first socket 2. The 1 pin of the first socket 2 is electrically connected with the 2 pin of the SPDT switch 1, the 1 pin of the relay 3 and one end of the diode 6, and the first socket 2 is electrically connected. The 3-pin of 2 is electrically connected with the 3-pin of the SPDT switch 1, the 1-pin of the second socket 4 and the other end of the diode 6, and the 2-pin of the second socket 4 is electrically connected. It is electrically connected with the power input IN V- terminal, GND, the power output OUT V- terminal and the 2-pin of the relay 3, and the 4-pin of the relay 3 is electrically connected with the power input OUT V+ terminal, and the power input IN The V+ terminal and the power input IN V- terminal are respectively used to connect the positive pole and the negative pole of the battery power supply. The power input OUT V+ terminal and the power output OUT V- terminal are respectively used to connect the positive pole and the negative pole of the fan. The pins are electrically connected to the high-voltage module 5, and the high-voltage module 5 includes a voltage-stabilizing module 501 and a boosting module 502. The power input end of the voltage-stabilizing module 501 is electrically connected to pin 1 of the second socket 4. The power supply input terminal of the voltage regulator module 501 is electrically connected to the power supply input terminal of the booster module 502. The voltage regulator module 501 is used to stabilize the voltage output by the battery, and the voltage regulator module 501 includes transient suppression A diode 5011, a frequency setting resistor 5012, a voltage divider circuit 5013, a step-down conversion chip 5014, a compensation circuit 5015 and an enabling control circuit 5016; the compensation circuit 5015 includes a capacitor C4 and a resistor R6, and the capacitor C4 is connected in series with the resistor R6, using to compensate the frequency of the control loop; the TVS diode 5011 is electrically connected to pin 1 of the second socket 4, and the step-down conversion chip 5014 is respectively connected to the TVS diode 5011, the frequency setting The constant resistor 5012, the voltage divider circuit 5013, the compensation circuit 5015 and the enabling control circuit 5016 are electrically connected, and the frequency setting resistor 5012 is used to set the programming of the switching frequency of the step-down conversion chip 5014. Determine the switching frequency of the step-down conversion chip 5014, the TVS diode 5011 is electrically connected to the enabling control circuit 5016, wherein the 1 pin of the second socket 4 is connected to the TVS diode 5011, The capacitor C2, the resistor R1, and one end of the 7-pin of the step-down conversion chip 5014 are electrically connected, and the TVS diode 5011 and the other end of the capacitor C2 are electrically connected to GND connected, the other end of the resistor R1 is electrically connected to the 2 pin of the step-down conversion chip 5014 and one end of the resistor R5, and the other end of the resistor R5 is electrically connected to GND; one end of the frequency setting resistor 5012 is electrically connected to the drop The 6-pin of the voltage conversion chip 5014 is electrically connected, and the other end of the frequency setting resistor 5012 is electrically connected to GND; the 5-pin of the step-down conversion chip 5014 is electrically connected to GND, and the step-down conversion Pin 8 of the chip 5014 is electrically connected to one end of the capacitor C1, the other end of the capacitor C1 is electrically connected to the pin 1 of the step-down conversion chip 5014, the diode D2 and one end of the energy storage inductor L1, and the other end of the diode D2 is electrically connected. One end is electrically connected to GND, the third pin of the step-down conversion chip 5014 is electrically connected to one end of the capacitor C4, the other end of the capacitor C4 is electrically connected to one end of the resistor R6, and the other end of the resistor R6 is electrically connected to GND connection, the 4 pins of the step-down conversion chip 5014 are electrically connected to one end of the resistor R3 and the resistor R7, the other end of the resistor R7 is electrically connected to GND, the other end of the resistor R3 is electrically connected to one end of the resistor R2, The load end V_12 is electrically connected to the other end of the inductor L1, the other end of the resistor R2, one end of the capacitor C3 and the boosting module 502, and the other end of the capacitor C3 is electrically connected to GND.

In this embodiment, when sterilizing the air, connect pins 1 and 2 of the SPDT switch 1, and connect the power supply IN V+ to the pin 2 of the first socket 2 to the pin 1 of the SPDT switch 1. Pin to pin 2 of SPDT switch 1 to pin 1 of the first socket 2 to pin 1 of relay 3 to pin 2 of relay 3 to IN V- to form a loop, relay 3 is powered, pins 3 and 4 of relay 3 and 4 The pin is connected, the OUT V+ output power is added to the fan, and the fan is working. Due to the unidirectional conductivity of the D1 diode 6, the high-voltage module 5 is not connected to the power supply and does not work at this time, and the droplets sprayed by the sprayer have no charge. The effect of air disinfection is better. When sterilizing the surface of the object, connect the 1 pin and 3 pin of the SPDT switch 1, and connect the power supply IN V+ to the 2 pin of the first socket 2 to the SPDT switch 1. Pin 1 of SPDT switch 1 to pin 3 of the second socket 4 to pin 1 of the second socket 4 to the high voltage module 5, the high voltage module 5 is powered, and the other is added to the pin 1 of the relay 3 through the diode 6 to the pin 1 of the relay 3 Pin 2 to IN V- forms a loop, relay 3 is powered on, pins 3 and 4 of relay 3 are connected, OUT V+ outputs power, add it to the fan, the fan works, at this time the high-voltage module 5 works, and the sprayer sprays The droplets that come out are charged, and the charged droplets are adsorbed on the surface of the object, and the effect of disinfecting the surface of the object is better, so that the electrostatic sprayer can change the spraying mode according to the actual demand, and turn on the high-voltage module to spray the surface of the object. The sprayed droplets are charged, and the effect is better for surface disinfection. When sterilizing the air, the high-voltage module is turned off, so that the sprayed droplets are not charged, and the effect is better for air disinfection. One machine can achieve two function, it is more convenient to use and improve work efficiency.

The embodiments of the present invention are also implemented through the following technical solutions.

Referring to Figures 1-3, the high-voltage module 5 is used to increase the voltage output by the battery to 20,000 volts, and the mist droplets have the best adaptability to charges under the voltage environment of 20,000 volts, and can carry the most Charge, below 20,000 volts or above 20,000 volts will reduce the amount of charge carried by the droplets.

Referring to FIG. 5, in the embodiment of the present invention, the voltage divider circuit 5013 includes a resistor R2, a resistor R3 and a resistor R7, and the resistor R2, the resistor R3 and the resistor R7 are connected in series to feed back the output voltage to the step-down converter After the chip 5014 compares with the internal reference value, the output voltage meets the set output requirement.

Referring to FIG. 5 , in the embodiment of the present invention, the enabling control circuit 5016 includes a resistor R1 and a resistor R5 for controlling the step-down conversion chip 5014 to be turned on and off, and the 2-pin input of the step-down conversion chip 5014 When the voltage is greater than 3.0V, the output voltage is activated, and when it is lower than 1.2V, the step-down conversion chip 5014 is in shutdown mode to save more power.

Specifically, a working principle of an electrostatic sprayer control circuit, only the fan mode: when the 1-pin and 2-pin of the SPDT switch 1 are turned on, the power supply IN V+ to the 2-pin of the first socket 2 to the SPDT The 1 pin of the throw switch 1 to the 2 pin of the SPDT switch 1 to the 1 pin of the first socket 2 to the 1 pin of the relay 3 to the 2 pin of the relay 3 to the IN V- form a loop, the relay 3 is powered, the relay Pin 3 and 4 of 3 are connected, OUT V+ output power, add it to the fan, the fan works, due to the unidirectional conductivity of D1 diode 6, the high voltage module 5 is not connected to the power supply, it does not work at this time, the fan + electrostatic mode : When pin 1 and pin 3 of SPDT switch 1 are connected, the power supply IN V+ goes to pin 2 of the first socket 2 to pin 1 of SPDT switch 1 to pin 3 of SPDT switch 1 to Pin 1 of the second socket 4 is connected to the high-voltage module 5, the high-voltage module 5 is powered, and the current is filtered by the capacitor C2 to reduce the ripple of the power supply. When the input voltage of the TVS diode 5011 is too high, the TVS diode 5011 is turned on. Pull down the power supply voltage to prevent damage to the step-down conversion chip 5014 due to excessive voltage at the moment of power-on. When the input voltage of pin 2 of the step-down conversion chip 5014 is greater than 3.0V, the start-up output voltage of the step-down conversion chip 5014 is lower than 1.2V. When the step-down conversion chip 5014 is in the shutdown mode, when the output voltage of pin 1 of the step-down conversion chip 5014 becomes high, the voltage divided by the voltage divider circuit 5013 composed of the resistor R2, the resistor R3 and the resistor R7 also follows. becomes high and feeds back to pin 4 of the step-down conversion chip 5014. After the internal error amplifier is compared with the internal reference voltage, it controls the internal MOSFET to reduce the output voltage until the output voltage reaches a stable output voltage. When the step-down conversion chip When the output voltage of pin 1 of 5014 becomes low, the voltage divided by resistor R2, resistor R3 and resistor R7 also becomes lower, and it is fed back to pin 4 of the step-down conversion chip 5014. After the reference voltage is compared, the internal MOSFET is controlled to increase the output voltage drop until it reaches a stable voltage output state, so as to ensure that the voltage output to the booster device is always stable, and the other way is added to the 1 pin of the relay 3 through the diode 6 Connect to pin 2 of relay 3 to IN V- to form a loop, relay 3 is powered on, pin 3 and pin 4 of relay 3 are connected, OUT V+ outputs power, add it to the fan, the fan works, at this time the high voltage module 5 This work solves the problem that the internal voltage of the battery in the current electrostatic sprayer equipment is unstable, causing the final output voltage of the booster device to be lower or higher than the set output voltage, thereby reducing the charging ability of the droplets, which is inconsistent with the sprayed object. The adsorption capacity is weakened, and the pesticide droplets that are not adsorbed by the sprayed object drift to the ground, causing environmental pollution and waste of resources. The spraying effect is not ideal and the spraying of charged or uncharged droplets cannot be selected according to the actual use requirements. It is not easy to use. Convenience, reduce work efficiency problems.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (6)

1. An electrostatic atomizer control circuit is characterized by comprising a single-pole double-throw switch, a first socket, a relay, a second socket, a high-voltage module and a diode; the first socket is electrically connected with the single-pole double-throw switch, the relay, the second socket and the diode respectively, and the second socket is electrically connected with the high-voltage module;

wherein, the power input IN V + end is electrically connected with the 2 pins of the first socket and the 3 pins of the relay, the pin 1 of the single-pole double-throw switch is electrically connected with the pin 2 of the first socket, the pin 1 of the first socket is electrically connected with the pin 2 of the single-pole double-throw switch, the pin 1 of the relay and one end of the diode, the pin 3 of the first socket is electrically connected with the pin 3 of the single-pole double-throw switch, the pin 1 of the second socket and the other end of the diode, the 2 pins of the second socket are electrically connected with a power input IN V-end, a GND (ground), a power output OUT V-end and the 2 pins of the relay, the 4 pins of the relay are electrically connected with an OUT V + end of a power input, and the 1 pin of the second socket is electrically connected with the high-voltage module;

the high-voltage module comprises a voltage stabilizing module and a boosting module, a power supply input end of the voltage stabilizing module is electrically connected with the pin 1 of the second socket, and a power supply input end of the voltage stabilizing module is electrically connected with a power supply input end of the boosting module;

the voltage stabilizing module comprises a transient suppression diode, a frequency setting resistor, a voltage dividing circuit, a voltage reduction conversion chip, a compensating circuit and an enabling control circuit; the compensation circuit comprises a capacitor C4 and a resistor R6; the transient suppression diode is electrically connected with a pin 1 of the second socket, the voltage reduction conversion chip is respectively electrically connected with the transient suppression diode, the frequency setting resistor, the voltage division circuit, the compensation circuit and the enabling control circuit, and the transient suppression diode is electrically connected with the enabling control circuit;

the 1 pin of the second socket is electrically connected with the transient suppression diode, the capacitor C2, the resistor R1 and one end of the 7 pin of the buck conversion chip, the other ends of the transient suppression diode and the capacitor C2 are electrically connected with GND, the other end of the resistor R1 is electrically connected with the 2 pin of the buck conversion chip and one end of the resistor R5, and the other end of the resistor R5 is electrically connected with GND; one end of the frequency setting resistor is electrically connected with the 6 pins of the voltage reduction conversion chip, and the other end of the frequency setting resistor is electrically connected with the GND; the 5 pins of the voltage reduction conversion chip are electrically connected with GND, the 8 pins of the voltage reduction conversion chip are electrically connected with one end of a capacitor C1, the other end of a capacitor C1 is electrically connected with the 1 pin of the voltage reduction conversion chip, one end of a diode D2 and one end of an energy storage inductor L1, the other end of a diode D2 is electrically connected with GND, the pin 3 of the step-down conversion chip is electrically connected with one end of a capacitor C4, the other end of a capacitor C4 is electrically connected with one end of a resistor R6, the other end of a resistor R6 is electrically connected with GND, the 4 pins of the buck conversion chip are electrically connected with one ends of a resistor R3 and a resistor R7, the other end of the resistor R7 is electrically connected with GND, the other end of the resistor R3 is electrically connected with one end of a resistor R2, a load end V _12, the other end of an inductor L1, the other end of a resistor R2, one end of a capacitor C3 and the boost module are electrically connected, and the other end of the capacitor C3 is electrically connected with GND.

2. An electrostatic spray control circuit as claimed in claim 1, wherein: the power input IN V + end and the power input IN V-end are respectively used for connecting the positive pole and the negative pole of a battery power supply, and the power input OUT V + end and the power output OUTV-end are respectively used for connecting the positive pole and the negative pole of a fan.

3. An electrostatic spray control circuit as claimed in claim 1, wherein: the high voltage module is used to boost the voltage output by the battery to twenty thousand volts.

4. An electrostatic spray control circuit as claimed in claim 1, wherein: the voltage stabilizing module is used for stabilizing the voltage output by the battery.

5. An electrostatic spray control circuit as claimed in claim 1, wherein: the voltage division circuit comprises a resistor R2, a resistor R3 and a resistor R7, wherein the resistor R2, the resistor R3 and the resistor R7 are connected in series and used for feeding back the output voltage to the voltage reduction conversion chip and comparing the voltage with an internal reference value, so that the output voltage meets the set output requirement.

6. An electrostatic spray control circuit as claimed in claim 1, wherein: the enabling control circuit comprises a resistor R1 and a resistor R5 and is used for controlling the buck conversion chip to be turned on and off.

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