CN111711252B - Electrostatic atomizer control circuit - Google Patents

Abstract

The invention provides an electrostatic sprayer control circuit, comprising a single-pole double-throw switch, a first socket, a relay, a second socket, a high-voltage module and a diode. The spraying of uncharged and charged droplets is selected according to actual use requirements. At the same time, the voltage stabilization circuit can stabilize the voltage when the battery voltage is unstable, so as to ensure that the voltage output to the boost device always remains stable. The problem that the internal voltage of the battery in the current electrostatic sprayer is unstable, resulting in the voltage finally output by the boost device being lower than or higher than the set output voltage, thereby reducing the charging ability of the droplets and weakening the adsorption ability with the sprayed object. The pesticide droplets that are not adsorbed with the sprayed object drift to the ground, causing environmental pollution and waste of resources, and the spraying effect is not ideal. It is not possible to select to spray charged or uncharged droplets according to actual use requirements, which is inconvenient to use and reduces the work efficiency.

Description

A control circuit for an electrostatic sprayer

Technical Field

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

Background technique

Electrostatic spray technology uses high-voltage static electricity to establish an electrostatic field between the nozzle and the spray target. After the pesticide fluid is atomized by the nozzle, it is charged by the internal charging device to form a group of charged droplets. Then, under the combined action of the electrostatic field force and the airflow blown by the internal fan, the droplets move in a directional manner and adsorb on various parts of the target, achieving good performance such as high deposition efficiency, less droplet drift and loss, and improved ecological environment. At present, there are battery-powered electrostatic sprayer equipment. Battery-powered electrostatic sprayer equipment can be used for spraying more conveniently. Its internal circuit is generally composed of batteries and boost modules. However, due to the characteristics of the battery, the internal voltage of the battery is in the actual working process. When the battery starts working, the internal voltage will be higher. After the battery has been working for a period of time, the voltage will slowly decrease, causing the voltage finally output by the boost device to be lower or higher than the set output voltage, thereby reducing the charging ability of the droplets and weakening the adsorption ability with the sprayed objects. The pesticide droplets that are not adsorbed by the sprayed objects 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 spray mode is very single and can only spray charged droplets. However, charged spray is better for surface disinfection of objects, and uncharged spray is better for air disinfection. When disinfecting the air, non-static spray equipment is required to carry out the spraying work, which reduces work efficiency.

Summary of the invention

The embodiment of the present invention provides an electrostatic sprayer control circuit. By adding a voltage stabilizing circuit and a control circuit to the existing electrostatic sprayer equipment, it is possible to select to spray uncharged and charged droplets according to actual use requirements. At the same time, the voltage stabilizing circuit can stabilize the voltage when the battery voltage is unstable to ensure that the voltage output to the boost device always remains stable, thereby solving the problem of internal voltage instability of the battery in the current electrostatic sprayer equipment, which causes the final output voltage of the boost device to be lower than or higher than the set output voltage, thereby reducing the charging ability of the droplets and weakening the adsorption ability with the sprayed object. The pesticide droplets that are not adsorbed with the sprayed object drift to the ground, causing environmental pollution and waste of resources. The spraying effect is not ideal and it is not possible to select to spray charged or uncharged droplets according to actual use requirements, which is inconvenient to use and reduces work efficiency.

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

An electrostatic sprayer control circuit comprises 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 to the single-pole double-throw switch, the relay, the second socket and the diode respectively, and the second socket is electrically connected to the high-voltage module;

Wherein, the power input IN V+ terminal is electrically connected to the 2nd pin of the first socket and the 3rd pin of the relay, the 1st pin of the single-pole double-throw switch is electrically connected to the 2nd pin of the first socket, the 1st pin of the first socket is electrically connected to the 2nd pin of the single-pole double-throw switch, the 1st pin of the relay and one end of the diode, the 3rd pin of the first socket is electrically connected to the 3rd pin of the single-pole double-throw switch, the 1st pin of the second socket and the other end of the diode, the 2nd pin of the second socket is electrically connected to the power input IN V- terminal, GND, the power output OUT V- terminal and the 2nd pin of the relay, the 4th pin of the relay is electrically connected to the power input OUT V+ terminal, and the 1st pin of the second socket is electrically connected to the high-voltage module;

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

The voltage stabilizing module includes a transient suppression diode, a frequency setting resistor, a voltage divider circuit, a buck conversion chip, a compensation circuit and an enable control circuit; the compensation circuit includes a capacitor C4 and a resistor R6; the transient suppression diode is electrically connected to pin 1 of the second socket, the buck conversion chip is electrically connected to the transient suppression diode, the frequency setting resistor, the voltage divider circuit, the compensation circuit and the enable control circuit respectively, and the transient suppression diode is electrically connected to the enable control circuit;

Among them, pin 1 of the second socket is electrically connected to one end of pin 7 of the transient suppression diode, capacitor C2, resistor R1, and the buck converter chip, the other ends of the transient suppression diode and capacitor C2 are electrically connected to GND, the other end of resistor R1 is electrically connected to pin 2 of the buck converter chip and one end of resistor R5, and the other end of resistor R5 is electrically connected to GND; one end of the frequency setting resistor is electrically connected to pin 6 of the buck converter chip, and the other end of the frequency setting resistor is electrically connected to GND; pin 5 of the buck converter chip is electrically connected to GND, pin 8 of the buck converter chip is electrically connected to one end of capacitor C1, and the other end of capacitor C1 is electrically connected to the buck converter chip. Pin 1 of the conversion chip, the diode D2 and one end of the energy storage inductor L1 are electrically connected, and the other end of the diode D2 is electrically connected to GND. Pin 3 of the step-down conversion chip is electrically connected to one end of the capacitor C4, and 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. Pin 4 of the step-down conversion chip is electrically connected to one end of the resistor R3 and the resistor R7, and 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 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 boost module, and the other end of the capacitor C3 is electrically connected to GND.

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

Furthermore, the power input IN V+ terminal and the power input IN V- terminal are respectively used to connect the positive and negative poles 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 poles of the fan.

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

Furthermore, the voltage stabilizing module is used to stabilize the voltage output by the battery.

Furthermore, the voltage divider circuit includes resistors R2, R3 and R7, which are connected in series to feed back the output voltage to the buck converter chip for comparison with an internal reference value so that the output voltage meets the set output requirements.

Furthermore, the enabling control circuit includes a resistor R1 and a resistor R5, which are used to control the step-down converter chip to be turned on and off.

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

1. By setting a single-pole double-throw switch, a first socket, a relay, a second socket, a high-voltage module and a diode, and by adjusting pin 1 of the single-pole double-throw switch to be connected or disconnected with pin 2 of the single-pole double-throw switch and pin 3 of the single-pole double-throw switch, the high-voltage module is powered on or off. When the high-voltage module is powered on, the sprayed droplets are charged, and when the high-voltage module is not powered on, the sprayed droplets are not charged, so that the electrostatic sprayer can change the spraying mode according to actual needs. When the surface of an object is disinfected, the high-voltage module is turned on to charge the sprayed droplets, which is better for surface disinfection. When the air is disinfected, the high-voltage module is turned off to make the sprayed droplets not charged, which is better for air disinfection. One machine realizes two functions, is more convenient to use, and improves work efficiency.

2. By setting a voltage stabilizing circuit, when the output voltage becomes high, the voltage divided by the voltage divider circuit composed of resistors R2, R3 and R7 also becomes high, and is fed back to the 4th pin of the buck converter chip. After the internal error amplifier is compared with the internal reference voltage, the internal MOSFET tube is controlled to reduce the output voltage until the output voltage reaches a stable output voltage. When the output voltage becomes low, the voltage divided by the resistors R2, R3 and R7 also becomes low, and is fed back to the 4th pin of the buck converter chip. After the internal error amplifier of the buck converter chip is compared with the internal reference voltage, the internal MOSFET tube is controlled to increase the output voltage until a stable voltage output state is reached, so as to ensure that the voltage output to the boost device always remains stable, so that the charging capacity of the droplets remains stable, and solves the problem that the internal voltage of the battery in the current electrostatic sprayer equipment is unstable, resulting in the final output voltage of the boost device being lower or higher than the set output voltage, thereby reducing the charging capacity of the droplets, weakening the adsorption capacity with the sprayed object, and the pesticide droplets that are not adsorbed with the sprayed object are scattered to the ground, causing environmental pollution and waste of resources, and the spraying effect is not ideal.

The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an electrostatic sprayer control circuit disclosed in an embodiment of the present invention;

FIG2 is a schematic diagram of partial current flow after pin 1 of the single-pole double-throw switch in FIG1 is connected to pin 2 of the single-pole double-throw switch;

FIG3 is a schematic diagram of partial current flow after pin 1 of the single-pole double-throw switch in FIG1 is connected to pin 3 of the single-pole double-throw switch;

FIG4 is a schematic diagram of the connection structure between the voltage stabilizing module and the voltage boosting module disclosed in an embodiment of the present invention;

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

Reference numerals:

1- single-pole double-throw switch; 2- first socket; 3- relay; 4- second socket; 5- high-voltage module; 501- voltage stabilizing module; 5011- transient suppression diode; 5012- frequency setting resistor; 5013- voltage divider circuit; 5014- buck converter chip; 5015- compensation circuit; 5016- enable control circuit; 502- boost module; 6- diode.

Specific embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

Referring to Figures 1-5, an electrostatic sprayer control circuit includes a single-pole double-throw 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 is electrically connected to the single-pole double-throw switch 1, the relay 3, the second socket 4 and the diode 6 respectively, and the second socket 4 is electrically connected to the high-voltage module 5, wherein the power input IN V+ terminal is electrically connected to the 2nd pin of the first socket 2 and the 3rd pin of the relay 3, the 1st pin of the single-pole double-throw switch 1 is electrically connected to the 2nd pin of the first socket 2, the 1st pin of the first socket 2 is electrically connected to the 2nd pin of the single-pole double-throw switch 1, the 1st pin of the relay 3 and one end of the diode 6, the 3rd pin of the first socket 2 is electrically connected to the 3rd pin of the single-pole double-throw switch 1, the 1st pin of the second socket 4 and the other end of the diode 6, the 2nd pin of the second socket 4 is electrically connected to the power input IN V- terminal, GND, the power output OUT V- terminal and the 2nd pin of the relay 3, the 4th pin of the relay 3 is electrically connected to the power input OUT V+ terminal, the power input IN The V+ terminal and the power input IN V- terminal are respectively used to connect the positive and negative electrodes 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 and negative electrodes of the fan, the 1 pin of the second socket 4 is electrically connected to the high-voltage module 5, the high-voltage module 5 includes a voltage stabilizing module 501 and a boost module 502, the power input terminal of the voltage stabilizing module 501 is electrically connected to the 1 pin of the second socket 4, the power input terminal of the voltage stabilizing module 501 is electrically connected to the power input terminal of the boost module 502, the voltage stabilizing module 501 is used to stabilize the voltage output by the battery, the voltage stabilizing module 501 includes a transient suppression diode 5011, a frequency setting resistor 5012, a voltage divider circuit 5013, a buck conversion chip 5014, a compensation circuit 5015 and an enable control circuit 5016; the compensation circuit 5015 includes a capacitor C4 and a resistor R6 , capacitor C4 is connected in series with resistor R6 to compensate for the frequency of the control loop; the transient suppression diode 5011 is electrically connected to pin 1 of the second socket 4, the buck converter chip 5014 is electrically connected to the transient suppression diode 5011, the frequency setting resistor 5012, the voltage divider circuit 5013, the compensation circuit 5015 and the enable control circuit 5016 respectively, the frequency setting resistor 5012 is used to set the programming of the switching frequency of the buck converter chip 5014, set the switching frequency of the buck converter chip 5014, the transient suppression diode 5011 is electrically connected to the enable control circuit 5016, wherein pin 1 of the second socket 4 is connected to the transient suppression diode 5011, capacitor C2, resistor R1, and one end of pin 7 of the buck converter chip 5014 are electrically connected, the other ends of the transient suppression diode 5011 and capacitor C2 are electrically connected to GND, the other end of the resistor R1 is electrically connected to pin 2 of the buck converter 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 pin 6 of the buck converter chip 5014, and the other end of the frequency setting resistor 5012 is electrically connected to GND; pin 5 of the buck converter chip 5014 is electrically connected to GND, pin 8 of the buck converter chip 5014 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is electrically connected to the buck converter chip 5 Pin 1 of 014, diode D2 and one end of the energy storage inductor L1 are electrically connected, and the other end of the diode D2 is electrically connected to GND. Pin 3 of the buck converter chip 5014 is electrically connected to one end of the capacitor C4, and 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. Pin 4 of the buck converter chip 5014 is electrically connected to one end of the resistor R3 and the resistor R7, and 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 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 boost module 502, and the other end of the capacitor C3 is electrically connected to GND.

In this embodiment, when the air is disinfected, the pins 1 and 2 of the single-pole double-throw switch 1 are connected, the power IN V+ is connected to the 2nd pin of the first socket 2 to the 1st pin of the single-pole double-throw switch 1 to the 2nd pin of the single-pole double-throw switch 1 to the 1st pin of the first socket 2 to the 1st pin of the relay 3 to the 2nd pin of the relay 3 to IN V- to form a loop, the relay 3 is energized, the 3rd and 4th pins of the relay 3 are connected, the OUT V+ output power is added to the fan, and the fan works. Due to the unidirectional conductivity of the D1 diode 6, the high-voltage module 5 is not powered on and does not work at this time. The droplets sprayed by the sprayer are not charged, and the effect of air disinfection is better. When the surface of the object is disinfected, the pins 1 and 3 of the single-pole double-throw switch 1 are connected, the power IN V+ is connected to the 2nd pin of the first socket 2 to the 1st pin of the single-pole double-throw switch 1 to the 3rd pin of the single-pole double-throw switch 1 to the 1st pin of the second socket 4 to the high-voltage module 5, the high-voltage module 5 is powered, and the other path is added to the 1st pin of the relay 3 to the 2nd pin of the relay 3 to IN V- through the diode 6. V- forms a loop, relay 3 is energized, pins 3 and 4 of relay 3 are connected, OUT V+ outputs power and is added to the fan, the fan works, at this time the high-voltage module 5 works, the mist droplets sprayed by the sprayer are charged, the mist droplets with charge are adsorbed on the surface of the object, and the surface disinfection effect of the object is better, so that the electrostatic sprayer can change the spraying mode according to actual needs, when the surface of the object is disinfected, the high-voltage module is turned on to make the sprayed mist droplets with charge, and the surface disinfection effect is better, and when the air is disinfected, the high-voltage module is turned off to make the sprayed mist droplets not charged, and the air disinfection effect is better. One machine realizes two functions, which is more convenient to use and improves work efficiency.

The embodiment of the present invention is 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. The droplets are best adapted to the charge in a voltage environment of 20,000 volts and can carry the most charge. A voltage lower than 20,000 volts or higher than 20,000 volts will reduce the amount of charge carried by the droplets.

Referring to FIG. 5 , in an embodiment of the present invention, the voltage divider circuit 5013 includes a resistor R2, a resistor R3 and a resistor R7. The resistors R2, R3 and R7 are connected in series to feed back the output voltage to the buck converter chip 5014 for comparison with an internal reference value, so that the output voltage meets the set output requirement.

Referring to FIG. 5 , in an embodiment of the present invention, the enable control circuit 5016 includes a resistor R1 and a resistor R5, which are used to control the on and off of the buck converter chip 5014. When the voltage input to pin 2 of the buck converter chip 5014 is greater than 3.0V, the output voltage is started. When the voltage is lower than 1.2V, the buck converter chip 5014 is in shutdown mode to save more energy.

Specifically, the working principle of an electrostatic sprayer control circuit is as follows: only the fan mode is turned on: when pins 1 and 2 of the single-pole double-throw switch 1 are connected, the power IN V+ is connected to pin 2 of the first socket 2 to pin 1 of the single-pole double-throw switch 1 to pin 2 of the single-pole double-throw switch 1 to pin 1 of the first socket 2 to pin 1 of the relay 3 to pin 2 of the relay 3 to IN V- to form a loop, and the relay 3 is energized, and pins 3 and 4 of the relay 3 are connected, and OUT V+ outputs power and is added to the fan, and the fan works. Due to the unidirectional conductivity of the D1 diode 6, the high-voltage module 5 is not powered on and does not work at this time. Fan + electrostatic mode: when pins 1 and 3 of the single-pole double-throw switch 1 are connected, the power IN V+ to pin 2 of the first socket 2 to pin 1 of the single-pole double-throw switch 1 to pin 3 of the single-pole double-throw switch 1 to pin 1 of the second socket 4 to the high-voltage module 5. The high-voltage module 5 is powered, and the current is filtered by capacitor C2 to reduce the ripple of the power supply. When the input voltage of the transient suppression diode 5011 is too high, the transient suppression diode 5011 is turned on to pull down the power supply voltage to prevent the voltage from being too high at the moment of power-on and damaging the buck converter chip 5014. When the voltage input to pin 2 of the buck converter chip 5014 is greater than 3.0V, the buck converter chip 5014 starts to output the voltage. When it is lower than 1.2V, the buck converter chip 5014 is in shutdown mode. When the output voltage of pin 1 of the buck converter chip 5014 becomes high, the voltage passes through the voltage divider circuit 5 composed of resistors R2, R3 and R7. The voltage after the voltage division of 013 also becomes higher and is fed back to the 4-pin of the buck converter chip 5014. After being compared with the internal reference voltage by the internal error amplifier, the internal MOSFET tube is controlled to reduce the output voltage until the output voltage reaches a stable output voltage. When the output voltage of the 1-pin of the buck converter chip 5014 becomes low, the voltage after the voltage division by resistors R2, R3 and R7 also becomes lower and is fed back to the 4-pin end of the buck converter chip 5014. After being compared with the internal reference voltage by the internal error amplifier, the internal MOSFET tube is controlled to increase the output voltage until a stable voltage output state is reached to ensure that the voltage output to the boost device always remains stable. The other path is added to the 1-pin of relay 3 through diode 6 to the 2-pin of relay 3 to IN V- forms a loop, relay 3 is energized, pins 3 and 4 of relay 3 are connected, OUT V+ outputs power and is added to the fan, the fan works, and at this time the high-voltage module 5 works, which solves the problem of unstable internal voltage of the battery in the current electrostatic sprayer equipment, resulting in the final output voltage of the boost device being lower than or higher than the set output voltage, thereby reducing the charging ability of the droplets and weakening the adsorption ability with the sprayed objects. The pesticide droplets that are not adsorbed with the sprayed objects drift to the ground, causing environmental pollution and waste of resources, and the spraying effect is not ideal and it is not possible to choose to spray charged or uncharged droplets according to actual use needs, which is inconvenient to use and reduces work efficiency.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if 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 (4)

1. An electrostatic sprayer control circuit, characterized in that it comprises 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 to the single-pole double-throw switch, the relay, the second socket and the diode respectively, and the second socket is electrically connected to the high-voltage module; Wherein, the power input IN V+ terminal is electrically connected to the 2nd pin of the first socket and the 3rd pin of the relay, the 1st pin of the single-pole double-throw switch is electrically connected to the 2nd pin of the first socket, the 1st pin of the first socket is electrically connected to the 2nd pin of the single-pole double-throw switch, the 1st pin of the relay and one end of the diode, the 3rd pin of the first socket is electrically connected to the 3rd pin of the single-pole double-throw switch, the 1st pin of the second socket and the other end of the diode, the 2nd pin of the second socket is electrically connected to the power input IN V- terminal, GND, the power output OUT V- terminal and the 2nd pin of the relay, the 4th pin of the relay is electrically connected to the power input OUT V+ terminal, and the 1st pin of the second socket is electrically connected to the high-voltage module; The high-voltage module includes a voltage stabilizing module and a voltage boosting module, the power input end of the voltage stabilizing module is electrically connected to pin 1 of the second socket, and the power input end of the voltage stabilizing module is electrically connected to the power input end of the voltage boosting module; The voltage stabilizing module includes a transient suppression diode, a frequency setting resistor, a voltage divider circuit, a buck conversion chip, a compensation circuit and an enable control circuit; the compensation circuit includes a capacitor C4 and a resistor R6; the transient suppression diode is electrically connected to pin 1 of the second socket, the buck conversion chip is electrically connected to the transient suppression diode, the frequency setting resistor, the voltage divider circuit, the compensation circuit and the enable control circuit respectively, and the transient suppression diode is electrically connected to the enable control circuit; Among them, pin 1 of the second socket is electrically connected to one end of pin 7 of the transient suppression diode, capacitor C2, resistor R1, and the buck converter chip, the other ends of the transient suppression diode and capacitor C2 are electrically connected to GND, the other end of resistor R1 is electrically connected to pin 2 of the buck converter chip and one end of resistor R5, and the other end of resistor R5 is electrically connected to GND; one end of the frequency setting resistor is electrically connected to pin 6 of the buck converter chip, and the other end of the frequency setting resistor is electrically connected to GND; pin 5 of the buck converter chip is electrically connected to GND, pin 8 of the buck converter chip is electrically connected to one end of capacitor C1, and the other end of capacitor C1 is electrically connected to the buck converter chip. Pin 1 of the conversion chip, the diode D2 and one end of the energy storage inductor L1 are electrically connected, the other end of the diode D2 is electrically connected to GND, pin 3 of the buck 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, the other end of the resistor R6 is electrically connected to GND, pin 4 of the buck conversion chip is 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 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 boost module, and the other end of the capacitor C3 is electrically connected to GND; The power input IN V+ terminal and the power input IN V- terminal are used to connect the positive and negative poles of the battery power supply respectively, and the power input OUT V+ terminal and the power output OUT V- terminal are used to connect the positive and negative poles of the fan respectively; The high voltage module is used to increase the voltage output by the battery to 20,000 volts. 2. An electrostatic sprayer control circuit according to claim 1, characterized in that: the voltage stabilizing module is used to stabilize the voltage output by the battery. 3. An electrostatic sprayer control circuit according to claim 1, characterized in that: the voltage divider circuit includes resistors R2, R3 and R7, and resistors R2, R3 and R7 are connected in series to feed back the output voltage to the buck converter chip for comparison with an internal reference value, so that the output voltage meets the set output requirements. 4. An electrostatic sprayer control circuit according to claim 1, characterized in that: the enabling control circuit comprises a resistor R1 and a resistor R5, which are used to control the step-down conversion chip to be turned on and off.