Power supply device of energy storage water pump motor and energy storage water pump

Abstract

The embodiment of the utility model relates to a power supply device of an energy storage water pump motor and an energy storage water pump. The device comprises an IGBT module, the IGBT module comprises a three-phase bridge type rectification circuit and a three-phase bridge type inversion loop, the three-phase bridge type inversion loop is used for accessing three-phase high-voltage alternating current, the three-phase bridge type rectification circuit is electrically connected with the three-phase bridge type inversion loop, the three-phase bridge type rectification circuit is used for outputting high-voltage direct current to the three-phase bridge type inversion loop, and the three-phase bridge type inversion loop is electrically connected with the three-phase bridge type inversion loop. The three-phase bridge type inversion loop is used for being electrically connected with a motor of the energy storage water pump and outputting three-phase low-voltage alternating current to the motor, and the voltage grade of the high-voltage alternating current is lower than that of the low-voltage alternating current; the control module is electrically connected with the driving circuit, the control module is used for outputting a control signal to the driving circuit, the driving circuit is electrically connected with the three-phase bridge type inversion loop, and the driving circuit is electrically connected with the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronic conversion, in particular to a power supply device of an energy storage water pump motor and an energy storage water pump. Background Art

[0002] The working principle of the power supply device of the energy storage water pump motor in the prior art is: inverting high-voltage direct current into three-phase low-voltage alternating current required by the motor, and using three-phase low-voltage alternating current to power the energy storage motor. That is, the power supply device of the energy storage water pump motor in the prior art cannot input three-phase high-voltage alternating current (380VAC) to power the energy storage water pump motor.

[0003] Currently, there is no solution to the above problem. Utility Model Content

[0004] The utility model provides a power supply device for an energy storage water pump motor and an energy storage water pump, aiming to solve the problem in the prior art that the power supply device for the energy storage water pump motor cannot input three-phase high voltage alternating current (380VAC) to power the energy storage water pump motor.

[0005] In a first aspect, an embodiment of the present utility model provides a power supply device for an energy storage water pump motor, comprising:

[0006] IGBT module, the IGBT module includes: a three-phase bridge rectifier circuit and a three-phase bridge inverter circuit, the three-phase bridge inverter circuit is used to access three-phase high-voltage alternating current, the three-phase bridge rectifier circuit is electrically connected to the three-phase bridge inverter circuit, the three-phase bridge rectifier circuit is used to output high-voltage direct current to the three-phase bridge inverter circuit, the three-phase bridge inverter circuit is used to be electrically connected to the motor of the energy storage water pump, the three-phase bridge inverter circuit is used to output three-phase low-voltage alternating current to the motor, and the voltage level of the high-voltage alternating current is lower than the voltage level of the low-voltage alternating current;

[0007] A control module and a drive circuit, wherein the control module is electrically connected to the drive circuit, the control module is used to output a control signal to the drive circuit, the drive circuit is electrically connected to the three-phase bridge inverter circuit, and the drive circuit is electrically connected to the motor.

[0008] In a second aspect, an embodiment of the present utility model provides an energy storage water pump, comprising:

[0009] Motor;

[0010] A power supply device for any of the energy storage water pump motors.

[0011] The embodiment of the present utility model provides a power supply device for an energy storage water pump motor and an energy storage water pump. By setting an IGBT module, a three-phase bridge rectifier circuit is used to convert three-phase high-voltage alternating current into high-voltage direct current. The control module controls the three-phase bridge inverter circuit through a drive circuit to convert the high-voltage direct current into low-voltage alternating current to power the energy storage water pump motor. This solves the problem in the prior art that the power supply device for the energy storage water pump motor cannot input three-phase high-voltage alternating current (380VAC) to power the energy storage water pump motor, and realizes that the power supply device for the energy storage water pump motor can input three-phase high-voltage alternating current (380VAC) to power the energy storage water pump motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A structural block diagram of a first power supply device for an energy storage water pump motor provided in an embodiment of the present utility model;

[0013] Figure 2 A structural diagram of a power supply device for a second energy storage water pump motor provided in an embodiment of the present utility model;

[0014] Figure 3 A circuit diagram of a driving circuit provided in an embodiment of the present utility model;

[0015] Figure 4 A circuit diagram of a control module provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0017] Figure 1 The present invention provides a power supply device for an energy storage water pump motor, the power supply device for the energy storage water pump motor comprising:

[0018] IGBT module, the IGBT module includes: a three-phase bridge rectifier circuit and a three-phase bridge inverter circuit, the three-phase bridge inverter circuit is used to receive three-phase high-voltage alternating current, the three-phase bridge rectifier circuit is electrically connected to the three-phase bridge inverter circuit, the three-phase bridge rectifier circuit is used to output high-voltage direct current to the three-phase bridge inverter circuit, the three-phase bridge inverter circuit is used to be electrically connected to the motor of the energy storage water pump, and the three-phase bridge inverter circuit is used to output three-phase low-voltage alternating current to the motor, and the voltage level of the high-voltage alternating current is lower than the voltage level of the low-voltage alternating current;

[0019] Specifically, the voltage level of the high voltage alternating current is 380V.

[0020] Specifically, if Figure 2 As shown, the three-phase bridge rectifier circuit is composed of 6 diodes D2, and the three-phase bridge inverter circuit is composed of 6 groups of insulated gate bipolar transistors T and diode D1.

[0021] A control module and a drive circuit, the control module is electrically connected to the drive circuit, the control module is used to output a control signal to the drive circuit, the drive circuit is electrically connected to the three-phase bridge inverter circuit, and the drive circuit is electrically connected to the motor.

[0022] Specifically, the above-mentioned control module is a DSP (Digital Signal Processor) chip, the model of the DSP chip is TMS320F28054FPNT, and the model of the drive signal is NSi6801B-DSWFR / NCV5703ADR2G. The function of the drive circuit is to isolate and amplify the control signal output by the DSP chip and then control the switching state of the insulated gate bipolar transistor in the three-phase bridge inverter circuit.

[0023] The technical solution of this embodiment employs an IGBT module and a three-phase bridge rectifier circuit to convert three-phase high-voltage AC power into high-voltage DC power. The control module, through a drive circuit, controls the three-phase bridge inverter circuit to convert the high-voltage DC power into low-voltage AC power to power the energy storage water pump motor. This solves the problem in existing energy storage water pump motor power supply devices that cannot input three-phase high-voltage AC power (380VAC) to power the energy storage water pump motor.

[0024] In an alternative approach, Figure 2 、 Figure 3 and Figure 4As shown, the three-phase bridge rectifier circuit has three input terminals (respectively L1, L2, and L3), one input terminal of the three-phase bridge rectifier circuit corresponds to one phase of the high-voltage alternating current (the three-phase high-voltage alternating current is respectively AIN, BIN, and CIN), and the input terminal of the three-phase bridge rectifier circuit is used to access the corresponding high-voltage alternating current (L1 is connected to AIN, L2 is connected to BIN, and L3 is connected to CIN). The three-phase bridge rectifier circuit also has a positive output terminal P and a negative output terminal N. The three-phase bridge inverter circuit has a positive input terminal P1 and three negative input terminals (respectively EU, EV, and EW). The three-phase bridge The positive output terminal P of the rectifier circuit is electrically connected to the positive input terminal P1 of the above-mentioned three-phase bridge inverter circuit, and the negative output terminal N of the above-mentioned three-phase bridge rectifier circuit and the negative input terminal of the above-mentioned three-phase bridge inverter circuit (EU, EV, EW respectively) are both used to be electrically connected to the ground wire. The above-mentioned three-phase bridge inverter circuit also has three output terminals (U, V, W respectively), and one output terminal of the above-mentioned three-phase bridge inverter circuit corresponds to one phase of the above-mentioned low-voltage alternating current. The output terminal of the above-mentioned three-phase bridge inverter circuit is used to output the corresponding above-mentioned low-voltage alternating current. The above-mentioned motor has three power supply terminals, and one output terminal of the above-mentioned three-phase bridge inverter circuit corresponds to the above-mentioned motor. A power supply end (respectively UOUT, VOUT, WOUT), the output end of the above-mentioned three-phase bridge inverter circuit is used to be electrically connected to the power supply end corresponding to the motor of the above-mentioned energy storage water pump (U is electrically connected to UOUT, V is electrically connected to VOUT, and W is electrically connected to WOUT). The above-mentioned control module has three first signal output ends (respectively pin 69, pin 67, and pin 63) and three second signal output ends (respectively pin 68, pin 66, and pin 62). The above-mentioned drive circuit has three high-level input ends (respectively PWMUH, PWMVH, and PWMWH) and three low-level input ends (respectively PWMUL, PW MVL, PWMWL), one of the first signal output terminals corresponds to the corresponding high-level input terminal of the drive circuit, the first signal output terminal is electrically connected to the corresponding high-level input terminal of the drive circuit (pin 69 is electrically connected to PWMUH, pin 67 is electrically connected to PWMVH, and pin 63 is electrically connected to PWMWH), one of the second signal output terminals corresponds to the corresponding low-level input terminal of the drive circuit, the second signal output terminal is electrically connected to the corresponding low-level input terminal of the drive circuit (pin 68 is electrically connected to PWMUL, pin 66 is electrically connected to PWMVL, and pin 62 is electrically connected to PWMWL),The above-mentioned drive circuit also has a plurality of output terminals of the first predetermined type (respectively, pin 5 of the drive chip U4, pin 8 of the drive chip U7, pin 5 of the drive chip U5, pin 8 of the drive chip U18, pin 5 of the drive chip U6, and pin 8 of the drive chip U8) and a plurality of output terminals of the second predetermined type (respectively, pin 4 of the drive chip U4, pin 4 of the drive chip U5, and pin 4 of the drive chip U6). The above-mentioned three-phase bridge inverter circuit also includes a plurality of control terminals (respectively, G1, G2, G3, G4, G5, and G6). One of the output terminals of the first predetermined type of the above-mentioned drive circuit corresponds to a control terminal of the above-mentioned three-phase bridge inverter circuit. The output terminal of the first predetermined type of the above-mentioned drive circuit corresponds to the control terminal of the above-mentioned three-phase bridge inverter circuit. The corresponding control terminals of the three-phase bridge inverter circuit are electrically connected (pin 5 of the driver chip U4 is connected to pin G1, pin 8 of the driver chip U7 is connected to pin G2, pin 5 of the driver chip U5 is connected to pin G3, pin 8 of the driver chip U18 is connected to pin G4, pin 5 of the driver chip U6 is connected to pin G5, and pin 8 of the driver chip U8 is connected to pin G6). One of the second predetermined type of output terminals of the above-mentioned driver circuit corresponds to an output terminal of the above-mentioned three-phase bridge inverter circuit. The second predetermined type of output terminal of the above-mentioned driver circuit is electrically connected to the corresponding output terminal of the above-mentioned three-phase bridge inverter circuit (pin 4 of the driver chip U4 is connected to pin U, pin 4 of the driver chip U5 is connected to pin V, and pin 4 of the driver chip U6 is connected to pin W).

[0025] Specifically, an IGBT module is installed, and a three-phase bridge rectifier circuit is used to convert three-phase high-voltage AC power into high-voltage DC power. The control module controls the three-phase bridge inverter circuit through a drive circuit to convert the high-voltage DC power into low-voltage AC power to power the energy storage water pump motor. This solves the problem that the power supply device of the energy storage water pump motor in the prior art cannot input three-phase high-voltage AC power (380VAC) to power the energy storage water pump motor.

[0026] In an alternative approach, Figure 2 As shown, the power supply device of the motor of the above-mentioned energy storage water pump also includes:

[0027] The first common-mode inductor L10 includes: three first coils (N1, N2 and N3 respectively), each of which has a first connection end and a second connection end. One first coil corresponds to one phase of the high-voltage alternating current. The first connection end of the first coil is used to receive the corresponding high-voltage alternating current, and the second connection end of the first coil is electrically connected to the corresponding input end of the three-phase bridge rectifier circuit (the first connection end of N1 is connected to AIN, the second connection end of N1 is electrically connected to L1, the first connection end of N2 is connected to BIN, the second connection end of N2 is electrically connected to L2, the first connection end of N3 is connected to CIN, and the second connection end of N1 is electrically connected to L3).

[0028] Specifically, the first common-mode inductor functions to filter the three-phase high-voltage alternating current flowing into the IGBT module to ensure the quality of the three-phase high-voltage alternating current.

[0029] In an alternative approach, Figure 2 As shown, the power supply device of the motor of the above-mentioned energy storage water pump also includes:

[0030] Capacitor filter circuit, the above-mentioned capacitor filter circuit is composed of multiple thin film capacitors in parallel (the thin film capacitors are C85, C84, and C130 respectively), the above-mentioned capacitor filter circuit has a first connection end and a second connection end, the first connection end DC+ of the above-mentioned capacitor filter circuit is electrically connected to the positive output end P of the above-mentioned three-phase bridge rectifier circuit, and is electrically connected to the positive input end P1 of the above-mentioned three-phase bridge inverter circuit, the second connection end of the above-mentioned capacitor filter circuit is used to be electrically connected to the above-mentioned ground wire.

[0031] Specifically, if Figure 2 As shown, the function of the capacitor filter circuit is to filter the high-voltage DC power flowing into the three-phase bridge inverter circuit to ensure the quality of the high-voltage DC power.

[0032] In an alternative approach, Figure 2 and Figure 4 As shown, the power supply device of the motor of the above-mentioned energy storage water pump also includes:

[0033] The pre-charging circuit includes: a pre-charging resistor R116 and a relay, the pre-charging resistor R116 has a first connection end and a second connection end, the first connection end of the pre-charging R116 is electrically connected to the negative output terminal N of the three-phase bridge rectifier circuit, the second connection end of the pre-charging resistor R116 is electrically connected to the second connection end of the capacitor filter circuit, the relay includes: a normally open contact JK1 and a second coil K, the normally open contact JK1 has a first connection end and a second connection end, the first connection end of the normally open contact JK1 is electrically connected to the negative output terminal N of the three-phase bridge rectifier circuit, the second connection end of the normally open contact JK1 is electrically connected to the pre-charging The second connection end of the charging resistor R116 is electrically connected, and the above-mentioned second coil K has a first connection end and a second connection end. The first connection end of the above-mentioned second coil K is electrically connected to the positive pole of the DC power supply VCC of the pre-charge control loop, and the second connection end of the above-mentioned second coil K is used to be electrically connected to the collector of the transistor Q2 of the above-mentioned pre-charge control loop. The above-mentioned control module also has a third signal output end (65 pin / GPIO10 port), and the above-mentioned third signal output end is used to be electrically connected to the base of the above-mentioned transistor Q2. The above-mentioned control module also has an analog-to-digital conversion port (30 pins), and the above-mentioned analog-to-digital conversion port (30 pins) is electrically connected to the first connection end DC+ of the above-mentioned capacitor filter circuit.

[0034] Specifically, if Figure 2 and Figure 4 As shown, when the positive output terminal P of the three-phase bridge rectifier circuit outputs high-voltage direct current, the high-voltage direct current passes through the pre-charging resistor R116. At this time, due to the presence of the pre-charging resistor R116, the size of the pre-charging current is limited to protect the components in the capacitor filter circuit. When the control module detects through the analog-to-digital conversion port (pin 30) that the voltage of the first connection terminal DC+ of the capacitor filter circuit reaches a predetermined voltage, the third signal output terminal (pin 65 / GPIO10 port) is controlled to output a high-level signal, so that the transistor Q2 in the pre-charging control loop is turned on, the second coil K is energized, the normally open contact JK1 is closed, and the pre-charging is completed.

[0035] Specifically, controlling the conduction of transistors in the pre-charge control loop through a control module belongs to the prior art and is therefore not described in detail here.

[0036] In an alternative approach, Figure 2 As shown, the above-mentioned pre-charging circuit also includes:

[0037] The diode D27 has a cathode electrically connected to the second connection end of the pre-charging resistor R116 , and an anode electrically connected to the second connection end of the capacitor filter circuit.

[0038] Specifically, a diode is added to the pre-charging circuit to prevent the high voltage DC from flowing in the reverse direction.

[0039] In an alternative approach, Figure 2 As shown, the power supply device of the motor of the above-mentioned energy storage water pump also includes:

[0040] An inductor filter circuit includes: a second common-mode inductor L4 and a third common-mode inductor L5. The second common-mode inductor L4 includes: a third coil N4 and a fourth coil N5. The third common-mode inductor L5 includes: a fifth coil N6 and a sixth coil N7. The third coil N4, the fourth coil N5, the fifth coil N6, and the sixth coil N7 each have a first connection end and a second connection end. The first connection end of the third coil N4 is electrically connected to the positive output end P of the three-phase bridge rectifier circuit, the second connection end of the third coil N4 is electrically connected to the first connection end of the fifth coil N6, and the second connection end of the fifth coil N6 is electrically connected to the first connection end DC+ of the capacitor filter circuit. The first connection end of the fourth coil N5 is electrically connected to the anode of the diode D27, the second connection end of the fourth coil N5 is electrically connected to the first connection end of the sixth coil N7, and the second connection end of the sixth coil N7 is electrically connected to the second connection end of the capacitor filter circuit.

[0041] Specifically, if Figure 2As shown, the function of the inductor filter circuit is to filter the high-voltage DC power flowing into the three-phase bridge inverter circuit to ensure the quality of the high-voltage DC power. The existence of this pre-charge circuit limits the size of the pre-charge current and protects the devices in the inductor filter circuit.

[0042] In an alternative approach, Figure 2 As shown, the power supply device of the motor of the above-mentioned energy storage water pump also includes:

[0043] The protection circuit includes: a first safety capacitor C75 and a second safety capacitor C90, each of the first safety capacitor C75 and the second safety capacitor C90 having a first connection end and a second connection end, the first connection end of the first safety capacitor C75 and the first connection end of the second safety capacitor C90 are both used to be electrically connected to the casing of the energy storage water pump, the second connection end of the first safety capacitor C75 is electrically connected to the second connection end of the third coil N4, and the second connection end of the second safety capacitor C90 is electrically connected to the second connection end of the fourth coil N5.

[0044] Specifically, the housing is connected to the ground wire, and the protection circuit is used to protect the safety of components in the circuits such as the capacitor filter circuit and the inductor filter circuit.

[0045] In an alternative approach, Figure 1 As shown, the power supply device of the motor of the above-mentioned energy storage water pump also includes:

[0046] A voltage sampling circuit and a current sampling circuit, the voltage sampling circuit is used to be electrically connected to the motor, the voltage sampling circuit is electrically connected to the control module, the current sampling circuit is used to be electrically connected to the IGBT module, and the current sampling circuit is electrically connected to the control module.

[0047] Specifically, the voltage sampling circuit inputs the collected voltage signal into the control module, and the current sampling circuit inputs the collected current signal into the control module. The control module estimates the rotor position based on the collected voltage and current signals. The internal motor control algorithm outputs a control signal to the drive circuit based on the obtained speed and position information to adjust the motor speed of the energy storage water pump.

[0048] Specifically, the control module estimates the rotor position through the collected voltage signal and current signal, and uses the internal motor control algorithm to output the control signal to the drive circuit according to the obtained speed and position information to adjust the motor speed. This is existing technology and will not be described in detail here.

[0049] An energy storage water pump provided by an embodiment of the present utility model comprises:

[0050] Motor;

[0051] A power supply device for any of the above-mentioned energy storage water pump motors.

[0052] Although the present invention has been described in detail above through general explanations, specific embodiments, and experiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. A power supply device for an energy storage water pump motor, characterized in that: include: IGBT module, the IGBT module includes: a three-phase bridge rectifier circuit and a three-phase bridge inverter circuit, the three-phase bridge inverter circuit is used to access three-phase high-voltage alternating current, the three-phase bridge rectifier circuit is electrically connected to the three-phase bridge inverter circuit, the three-phase bridge rectifier circuit is used to output high-voltage direct current to the three-phase bridge inverter circuit, the three-phase bridge inverter circuit is used to be electrically connected to the motor of the energy storage water pump, the three-phase bridge inverter circuit is used to output three-phase low-voltage alternating current to the motor, and the voltage level of the high-voltage alternating current is lower than the voltage level of the low-voltage alternating current; A control module and a drive circuit, wherein the control module is electrically connected to the drive circuit, the control module is used to output a control signal to the drive circuit, the drive circuit is electrically connected to the three-phase bridge inverter circuit, and the drive circuit is electrically connected to the motor.

2. The device according to claim 1, characterized in that The three-phase bridge rectifier circuit has three input terminals, one input terminal of the three-phase bridge rectifier circuit corresponds to one phase of the high-voltage alternating current, and the input terminal of the three-phase bridge rectifier circuit is used to access the corresponding high-voltage alternating current. The three-phase bridge rectifier circuit also has a positive output terminal and a negative output terminal. The three-phase bridge inverter circuit has a positive input terminal and three negative input terminals. The positive output terminal of the three-phase bridge rectifier circuit is electrically connected to the positive input terminal of the three-phase bridge inverter circuit. The negative output terminal of the three-phase bridge rectifier circuit and the negative output terminal of the three-phase bridge inverter circuit are connected to each other. The negative input terminals of the inverter circuit are all used to be electrically connected to the ground wire. The three-phase bridge inverter circuit also has three output terminals, one output terminal of the three-phase bridge inverter circuit corresponds to one phase of the low-voltage alternating current, and the output terminal of the three-phase bridge inverter circuit is used to output the corresponding low-voltage alternating current. The motor has three power supply terminals, one output terminal of the three-phase bridge inverter circuit corresponds to a power supply terminal of the motor, and the output terminal of the three-phase bridge inverter circuit is used to be electrically connected to the power supply terminal corresponding to the motor of the energy storage water pump. The control module has three first signal terminals. An output terminal and three second signal output terminals, the driving circuit has three high-level input terminals and three low-level input terminals, one first signal output terminal corresponds to the corresponding high-level input terminal of the driving circuit, the first signal output terminal is electrically connected to the corresponding high-level input terminal of the driving circuit, one second signal output terminal corresponds to the corresponding low-level input terminal of the driving circuit, the second signal output terminal is electrically connected to the corresponding low-level input terminal of the driving circuit, the driving circuit also has a plurality of output terminals of a first predetermined type and a plurality of output terminals of a second predetermined type, the three-phase bridge inverter circuit also includes a plurality of control terminals, one output terminal of the first predetermined type of the driving circuit corresponds to a control terminal of the three-phase bridge inverter circuit, the output terminal of the first predetermined type of the driving circuit is electrically connected to the corresponding control terminal of the three-phase bridge inverter circuit, one output terminal of the second predetermined type of the driving circuit corresponds to an output terminal of the three-phase bridge inverter circuit, and the output terminal of the second predetermined type of the driving circuit is electrically connected to the corresponding output terminal of the three-phase bridge inverter circuit.

3. The device according to claim 2, characterized in that The power supply device of the motor of the energy storage water pump also includes: The first common-mode inductor includes: three first coils, each of the first coils having a first connection end and a second connection end, one first coil corresponding to one phase of the high-voltage alternating current, the first connection end of the first coil being used to access the corresponding high-voltage alternating current, and the second connection end of the first coil being electrically connected to the corresponding input end of the three-phase bridge rectifier circuit.

4. The device according to claim 2, characterized in that The power supply device of the motor of the energy storage water pump also includes: A capacitor filter circuit, wherein the capacitor filter circuit is composed of multiple thin film capacitors connected in parallel, and the capacitor filter circuit has a first connection end and a second connection end. The first connection end of the capacitor filter circuit is electrically connected to the positive output end of the three-phase bridge rectifier circuit and is electrically connected to the positive input end of the three-phase bridge inverter circuit. The second connection end of the capacitor filter circuit is used to be electrically connected to the ground wire.

5. The device according to claim 4, characterized in that The power supply device of the motor of the energy storage water pump also includes: A pre-charging circuit, the pre-charging circuit includes: a pre-charging resistor and a relay, the pre-charging resistor having a first connection end and a second connection end, the first connection end of the pre-charging resistor being electrically connected to the negative output end of the three-phase bridge rectifier circuit, and the second connection end of the pre-charging resistor being electrically connected to the second connection end of the capacitor filter circuit, the relay including: a normally open contact and a second coil, the normally open contact having a first connection end and a second connection end, the first connection end of the normally open contact being electrically connected to the negative output end of the three-phase bridge rectifier circuit, and the second connection end of the normally open contact being electrically connected to the second connection end of the pre-charging resistor, the second coil having a first connection end and a second connection end, the first connection end of the second coil being electrically connected to the positive pole of the DC power supply of the pre-charging control loop, the second connection end of the second coil being used to be electrically connected to the collector of the transistor of the pre-charging control loop, the control module also having a third signal output end, the third signal output end being used to be electrically connected to the base of the transistor, the control module also having an analog-to-digital conversion port, the analog-to-digital conversion port being electrically connected to the first connection end of the capacitor filter circuit.

6. The device according to claim 5, characterized in that The pre-charging circuit further includes: A diode, wherein the cathode of the diode is electrically connected to the second connection end of the pre-charging resistor, and the anode of the diode is electrically connected to the second connection end of the capacitor filter circuit.

7. The device according to claim 6, characterized in that The power supply device of the motor of the energy storage water pump also includes: An inductor filter circuit, the inductor filter circuit comprising: a second common-mode inductor and a third common-mode inductor, the second common-mode inductor comprising: a third coil and a fourth coil, the third common-mode inductor comprising: a fifth coil and a sixth coil, the third coil, the fourth coil, the fifth coil and the sixth coil each having a first connection end and a second connection end, the first connection end of the third coil being electrically connected to the positive output end of the three-phase bridge rectifier circuit, the second connection end of the third coil being electrically connected to the first connection end of the fifth coil, the second connection end of the fifth coil being electrically connected to the first connection end of the capacitor filter circuit, the first connection end of the fourth coil being electrically connected to the positive electrode of the diode, the second connection end of the fourth coil being electrically connected to the first connection end of the sixth coil, and the second connection end of the sixth coil being electrically connected to the second connection end of the capacitor filter circuit.

8. The device according to claim 7, characterized in that The power supply device of the motor of the energy storage water pump also includes: A protection circuit, the protection circuit comprising: a first safety capacitor and a second safety capacitor, the first safety capacitor and the second safety capacitor both having a first connection end and a second connection end, the first connection end of the first safety capacitor and the first connection end of the second safety capacitor both being used to be electrically connected to the casing of the energy storage water pump, the second connection end of the first safety capacitor being electrically connected to the second connection end of the third coil, and the second connection end of the second safety capacitor being electrically connected to the second connection end of the fourth coil.

9. The device according to claim 2, characterized in that The power supply device of the motor of the energy storage water pump also includes: A voltage sampling circuit and a current sampling circuit, wherein the voltage sampling circuit is used to be electrically connected to the motor, and the voltage sampling circuit is electrically connected to the control module, and the current sampling circuit is used to be electrically connected to the IGBT module, and the current sampling circuit is electrically connected to the control module.

10. An energy storage water pump, characterized in that: include: Motor; A power supply device for an energy storage water pump motor as claimed in any one of claims 1 to 9.

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