Modularized energy storage power distribution system

Abstract

The invention discloses a modularized energy storage power distribution system, and belongs to the technical field of power supply, the modularized energy storage power distribution system is provided with a central module, a power distribution module and a voice module, the voice module can receive and convert a voice instruction and transmit the converted voice instruction to the central module, and the central module sends a power supply control instruction. The power distribution module can complete mutual conversion between phase power, the charging module comprises an energy storage group and an equalization circuit, the equalization circuit can perform equalization rapid charging on each battery in the energy storage group, normal operation of the modular energy storage and power distribution system is guaranteed, and intelligence of output power supply of the low-voltage power distribution network is improved. The power supply mode of the low-voltage power distribution network is optimized, and the timeliness and the automation degree of power supply of the low-voltage power distribution network are improved.

Description

Technical Field

[0001] The present invention is a modular energy storage power distribution system, belonging to the technical field of power supply. Background Art

[0002] When the low-voltage distribution network outputs power, it has characteristics such as variable inductive loads and high operating losses, resulting in sometimes excessive single-phase current and frequent occurrence of phenomena such as imbalance between phases. At the same time, the low-voltage distribution network is generally manually operated for power supply, and the operator can only operate one by one in sequence, with low automation and modularization levels, which affects the efficiency of power supply and timely conversion. With the development of society and the continuous popularization of AI intelligence, the intelligence of the low-voltage distribution network output power supply has not been effectively popularized in a timely manner. Therefore, some technicians in this field have developed a modular energy storage power distribution system to overcome the problems in the above background art. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a modular energy storage power distribution system aiming at the above deficiencies. The present invention can integrate the power supply at the low-voltage load end, realize simultaneous power supply through voice control without manual operation, and can also automatically convert and optimize the power supply mode when the current in each phase is too large, improving the intelligence level of the low-voltage power supply network and optimizing the power supply mode.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A modular energy storage power distribution system includes a central module, a voice module, a charging module, and a power distribution module. The central module is connected to the voice module, the charging module, and the power distribution module, and the central module is also connected to a display screen; The central module includes a chip U1, the model of the chip U1 is STM32F373CCT6. The 3rd pin of the chip U1 is connected to the 1st pin of a crystal oscillator Y1 and one end of a capacitor C1. The 4th pin of the chip U1 is connected to the 3rd pin of the crystal oscillator Y1 and one end of a capacitor C2. The other ends of the capacitor C1, the capacitor C2, and the 2nd pin of the crystal oscillator Y1 are connected to the ground wire. The 7th pin of the chip U1 is connected to one end of a resistor R1 and one end of a capacitor C3. The other end of the resistor R1 is connected to the power supply +3.3V, and the other end of the capacitor C3 is connected to the ground wire. The 12th pin, 31st pin, and 63rd pin of the chip U1 are connected to the power supply +3.3V, and the 13th pin, 32nd pin, and 64th pin of the chip U1 are connected to the ground wire.

[0005] Further, the voice module includes a chip U7, the model of the chip U7 is SNR9902VR, pin 1 of the chip U7 is connected to the power supply +5V, pin 2 of the chip U7 is connected to the ground wire, pin 3 of the chip U7 is connected to pin 1 of the voice receiver MY, pin 4 of the chip U7 is connected to pin 2 of the voice receiver MY, pin 5 of the chip U7 is connected to pin 1 of the voice player LS, pin 6 of the chip U7 is connected to pin 2 of the voice player LS, pin 7 of the chip U7 is connected to pin 48 of the chip U1, and pin 8 of the chip U7 is connected to pin 47 of the chip U1.

[0006] Further, the power distribution module includes a contactor KM1. The input end of the contactor KM1 is connected to three-phase alternating current AC380V. The three phases of the three-phase alternating current AC380V include phase A, phase B, and phase C. A current transformer HA is provided on the surface of phase A, a current transformer HB is provided on the surface of phase B, and a current transformer HC is provided on the surface of phase C. The output end of the contactor KM1 is further connected to a load FZ, and a switching circuit is further provided between the output end of the contactor KM1 and the load FZ.

[0007] Further, the switching circuit includes a chip U2. The chip U2 is an optocoupler chip, and the model is EL357N. Pin 1 of the chip U2 is connected to one end of a resistor R2, and the other end of the resistor R2 is connected to pin 16 of the chip U1. Pin 2 of the chip U2 is connected to the ground wire, pin 3 of the chip U2 is connected to the power supply +48V, and pin 4 of the chip U2 is connected to the control end of the contactor KM1.

[0008] Further, the switching circuit further includes a chip U3. The model of the chip U3 is PT7M6233CLXTA3E. Pin 3 of the chip U3 is connected to pin 20 of the chip U1, the drain of a field effect transistor Q1, and one end of a resistor R4. The other end of the resistor R4 is connected to the positive electrode of a light-emitting diode D6. The negative electrode of the light-emitting diode D6 is connected to pin 1 of the chip U3, one end of a resistor R5, and the base of a triode Q4. The other end of the resistor R5 is connected to the base of a triode Q2. The collector of the triode Q2 is connected to the gate of the field effect transistor Q1. The emitter of the triode Q2 and pin 2 of the chip U3 are connected to the ground wire.

[0009] Further, the source of the field effect transistor Q1 is connected to one end of a resistor R8 and pin 1 of a chip U6. The chip U6 is a thyristor, and the model is MTC200. The other end of the resistor R8 and pin 2 of the chip U6 are connected to the ground wire. Pin 3 of the chip U6 is connected to a first load connection terminal FZ1, and pin 4 of the chip U6 is connected to phase A of the three-phase alternating current AC380V.

[0010] Further, one end of a resistor R6 and the gate of a field effect transistor Q3 are connected to the emitter of the triode Q4, the other end of the resistor R6 is connected to the ground wire, the collector of the triode Q4 is connected to the drain of the field effect transistor Q3 and the 21st pin of the chip U1, one end of a resistor R7 and the 1st pin of the chip U5 are connected to the source of the field effect transistor Q3. The chip U5 is a thyristor with the model number MTC200. The other end of the resistor R7 and the 2nd pin of the chip U5 are connected to the ground wire. The 3rd pin of the chip U5 is connected to a first load terminal FZ1, and the 4th pin of the chip U5 is connected to the B phase of the three-phase alternating current AC380V.

[0011] Further, the switching circuit further includes a chip U4 with the model number MAX7044. The 1st pin and the 8th pin of the chip U4 are connected to the power supply +3.3V. The 2nd pin of the chip U4 is connected to one end of a resistor R3 and the signal output terminal HAO of a current transformer HA. The other end of the resistor R3, the 3rd pin and the 4th pin of the chip U4 are connected to the ground wire. The 5th pin of the chip U4 is connected to the 34th pin of the chip U1. The 6th pin of the chip U4 is connected to the 35th pin of the chip U1. The 7th pin of the chip U4 is connected to the 36th pin of the chip U1.

[0012] Further, the charging module includes a switch block U8 which is a switching power supply. The input end of the switch block U8 is connected to the two-phase alternating current AC220V, and the output end of the switch block U8 is connected to the power supplies +48V, +5V and +3.3V. The charging module further includes an energy storage group DC. The energy storage group DC includes 24V batteries. There are two 24V batteries connected in series. An equalizing circuit is connected in parallel at both the positive and negative ends of each 24V battery. The positive pole of the 24V batteries connected in series is connected to the power supply +48V, and the negative pole of the 24V batteries connected in series is connected to the ground wire.

[0013] Further, the equalizing circuit includes a triode Q5. The emitter of the triode Q5 is connected to one end of a resistor R11, one end of a sliding rheostat R9 and the positive pole of the 24V battery. The emitter of the triode Q5 is also connected to one end of a resistor R10. The other end of the resistor R10 is connected to the positive pole of a light-emitting diode D5. The negative pole of the light-emitting diode D5 is connected to the negative pole of the 24V battery. The other end of the resistor R11 is connected to the base of the triode Q5 and the 1st pin of a voltage-regulating triode T1. The voltage-regulating triode is a 24V voltage-regulating tube with the model number WS78L24. The 2nd pin of the voltage-regulating triode T1 and the other end of the sliding rheostat R9 are connected to the negative pole of the 24V battery. The 3rd pin of the voltage-regulating triode T1 is connected to the middle contact of the sliding rheostat R9. The collector of the triode Q5 is connected to the positive pole of a diode D1. The negative pole of the diode D1 is connected to the positive pole of a diode D2. The negative pole of the diode D2 is connected to the positive pole of a diode D3. The negative pole of the diode D3 is connected to the negative pole of the 24V battery.

[0014] Adopting the above technical solutions, the present invention has the following technical effects compared with the prior art: 1. The present invention is provided with a central module and a voice module. The voice module receives the voice commands of the operator, then converts them, and transmits the converted voice commands to the central module. The central module issues a power supply control command according to the voice commands of the voice module, realizing the automatic voice control of this energy storage power supply system and improving the intelligent level of the power supply output by the low-voltage distribution network.

[0015] 2. The present invention is also provided with a power distribution module. A switching circuit is provided in the power distribution module. When the supply current of a certain phase in the low-voltage distribution network is too large, it can be timely converted to supply power from other phases, optimizing the power supply mode of the low-voltage distribution network.

[0016] 3. The present invention is also provided with a charging module. The charging module includes an energy storage group and a balancing circuit. The balancing circuit can perform balanced and rapid charging on each battery in the energy storage group. The charging module can enable the normal operation of this modular energy storage power distribution system in the case of a lack of mains supply in the low-voltage distribution network, improving the timeliness and automation level of the power supply of the low-voltage distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale and orientation.

[0018] Figure 1 It is a schematic diagram of the structural connection of the present invention; Figure 2 It is a schematic circuit diagram of the central module in the present invention; Figure 3 It is a schematic circuit diagram of the power distribution module in the present invention; Figure 4 It is the principle of the switching circuit in the present invention Figure 1 ; Figure 5 It is the principle of the switching circuit in the present invention Figure 2 ; Figure 6 It is a schematic circuit diagram of the charging module in the present invention; Figure 7 It is a schematic circuit diagram of the balancing circuit in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Such as Figure 1 and Figure 2As shown in the figure, a modular energy storage and power distribution system includes a central module, a voice module, a charging module, and a power distribution module. The central module is connected to the voice module, the charging module, and the power distribution module. The voice module is used to process voice information instructions and then transmit the processed information instructions to the central module. The charging module is used to evenly charge the energy storage battery in the modular energy storage and power distribution system. The power distribution module is used to automatically switch each phase of the three-phase alternating current in the modular energy storage and power distribution system. The central module is also connected to a display screen, which is used to display the operating status and parameters of the voice module, the charging module, and the power distribution module.

[0020] The central module includes a chip U1, the model of chip U1 is STM32F373CCT6. The 3rd pin of chip U1 is connected to the 1st pin of crystal oscillator Y1 and one end of capacitor C1. The 4th pin of chip U1 is connected to the 3rd pin of crystal oscillator Y1 and one end of capacitor C2. The other end of capacitor C1, the other end of capacitor C2, and the 2nd pin of crystal oscillator Y1 are connected to the ground wire. The 7th pin of chip U1 is connected to one end of resistor R1 and one end of capacitor C3. The other end of resistor R1 is connected to the power supply +3.3V, and the other end of capacitor C3 is connected to the ground wire. The 12th pin, 31st pin, and 63rd pin of chip U1 are connected to the power supply +3.3V, and the 13th pin, 32nd pin, and 64th pin of chip U1 are connected to the ground wire.

[0021] The central module is the processing and integration unit of the modular energy storage and power distribution system. Chip U1 integrates an ARM Cortex-M4 core with DSP and FPU instructions, which operates at a 32-bit working frequency, and advanced analog peripherals, thus improving flexibility and enabling quick cooperation with other modules and timely processing.

[0022] The voice module includes a chip U7, the model of chip U7 is SNR9902VR. The 1st pin of chip U7 is connected to the power supply +5V. The 2nd pin of chip U7 is connected to the ground wire. The 3rd pin of chip U7 is connected to the 1st pin of voice receiver MY. The 4th pin of chip U7 is connected to the 2nd pin of voice receiver MY. The 5th pin of chip U7 is connected to the 1st pin of voice player LS. The 6th pin of chip U7 is connected to the 2nd pin of voice player LS. The 7th pin of chip U7 is connected to the 48th pin of chip U1, and the 8th pin of chip U7 is connected to the 47th pin of chip U1.

[0023] Chip U7 is an intelligent voice recognition module. The operator issues a voice control instruction, which is received by the voice receiver MY. After being converted by chip U7, it is transmitted to chip U1 through the 7th pin and 8th pin of chip U7. Chip U1 issues a control execution instruction according to the voice instruction, and after execution, it is sent out through the voice player LS.

[0024] As Figure 2 and Figure 3As shown in the figure, the power distribution module includes a contactor KM1. The input end of the contactor KM1 is connected to three-phase alternating current AC380V. Among the three phases of the three-phase alternating current AC380V, there are phase A, phase B, and phase C. A current transformer HA is provided on the surface of phase A, a current transformer HB is provided on the surface of phase B, and a current transformer HC is provided on the surface of phase C. The current transformer HA is used to detect the current passing through phase A at the output end of the contactor KM1, the current transformer HB is used to detect the current passing through phase B at the output end of the contactor KM1, and the current transformer HC is used to detect the current passing through phase C at the output end of the contactor KM1. The output end of the contactor KM1 is also connected to a load FZ. There are multiple loads FZ, which are composed of the first load to the Nth load, and all are two-phase alternating current AC220V. Each load input end in the load FZ is connected to two of the three-phase alternating current AC380V, and phase A, phase B, and phase C of the three-phase alternating current AC380V are evenly arranged between the input ends of the load FZ.

[0025] Since the structures and working processes of the first load to the Nth load in the load FZ are the same, only the first load will be taken as an example for illustration below. The input end of the first load is connected to phase A and phase B of the three-phase alternating current AC380V, and switching circuits are provided on both phase A and phase B at the input end of the first load.

[0026] The switching circuit includes a chip U2. The chip U2 is an optocoupler chip, and the specific model is EL357N. One end of a resistor R2 is connected to pin 1 of the chip U2, and the other end of the resistor R2 is connected to pin 16 of the chip U1. Pin 2 of the chip U2 is connected to the ground wire, pin 3 of the chip U2 is connected to the power supply +48V, pin 4 of the chip U2 is connected to the control end of the contactor KM1. When the output of pin 16 of the chip U1 is at a high level, the chip U2 conducts, and the control end of the contactor KM1 is connected to the power supply +48V, causing the contactor KM1 to be attracted. On the contrary, when the output of pin 16 of the chip U1 is at a low level, the control end and the output end of the chip U2 are disconnected, and the control end of the contactor KM1 is disconnected from the power supply +48V, causing the contactor KM1 to close.

[0027] As Figure 3 、 Figure 4 and Figure 5 As shown in

[0028] One end of resistor R8 and pin 1 of chip U6 are connected to the source electrode of field effect transistor Q1. Chip U6 is a thyristor with the model number MTC200. The other end of resistor R8 and pin 2 of chip U6 are connected to the ground wire. The first load terminal FZ1 is connected to pin 3 of chip U6, and phase A of three-phase alternating current AC380V is connected to pin 4 of chip U6.

[0029] One end of resistor R6 and the gate electrode of field effect transistor Q3 are connected to the emitter of triode Q4. The other end of resistor R6 is connected to the ground wire. The collector of triode Q4 is connected to the drain electrode of field effect transistor Q3 and pin 21 of chip U1. One end of resistor R7 and pin 1 of chip U5 are connected to the source electrode of field effect transistor Q3. Chip U5 is a thyristor with the model number MTC200. The other end of resistor R7 and pin 2 of chip U5 are connected to the ground wire. The first load terminal FZ1 is connected to pin 3 of chip U5, and phase B of three-phase alternating current AC380V is connected to pin 4 of chip U5.

[0030] The switching circuit further includes chip U4 with the model number MAX7044. Power supply +3.3V is connected to pins 1 and 8 of chip U4. One end of resistor R3 and the signal output terminal HAO of current transformer HA are connected to pin 2 of chip U4. The other end of resistor R3, pins 3 and 4 of chip U4 are connected to the ground wire. Pin 5 of chip U4 is connected to pin 34 of chip U1, pin 6 of chip U4 is connected to pin 35 of chip U1, and pin 7 of chip U4 is connected to pin 36 of chip U1.

[0031] Chip U4 is an analog-to-digital conversion chip. Current transformer HA detects the analog quantity of the current in phase A of three-phase alternating current AC380V, and then inputs it through pin 2 of chip U4. Chip U4 converts it into a digital signal that chip U1 can recognize and inputs it into chip U1 through pins 34, 35 and 36 of chip U1. When chip U1 recognizes that the current in phase A of three-phase alternating current AC380V is too large, pin 20 of chip U1 outputs a low level, and pin 21 of chip U1 outputs a high level. Triode Q2, field effect transistor Q1 and thyristor U6 change from conduction to cut-off, and triode Q4, field effect transistor Q3 and thyristor U5 change from cut-off to conduction. Then the power supply in the first load is converted from phase A of the original three-phase alternating current AC380V to phase B of three-phase alternating current AC380V.

[0032] As Figure 6 and Figure 7 shown, the charging module includes switch block U8. Switch block U8 is a switching power supply. The input end of switch block U8 is connected to two-phase alternating current AC220V. The output end of switch block U8 is connected to power supply +48V, power supply +5V and power supply +3.3V. Switch block U8 is used to convert alternating current into power supply +48V, power supply +5V and power supply +3.3V required by this modular energy storage and power distribution system.

[0033] The charging module further includes an energy storage group DC. The energy storage group DC includes a 24V battery. There are two 24V batteries connected in series with each other. An equalizing circuit is also connected in parallel across the positive and negative terminals of each 24V battery. After the 24V batteries are connected in series, the positive pole is connected to the power supply +48V, and the negative pole after the 24V batteries are connected in series is connected to the ground wire.

[0034] The equalizing circuit includes a triode Q5. One end of a resistor R11, one end of a sliding rheostat R9, and the positive pole of the 24V battery are connected to the emitter of the triode Q5. One end of a resistor R10 is also connected to the emitter of the triode Q5. The other end of the resistor R10 is connected to the positive pole of a light-emitting diode D5. The negative pole of the light-emitting diode D5 is connected to the negative pole of the 24V battery. The other end of the resistor R11 is connected to the base of the triode Q5 and the 1st pin of a voltage-regulating triode T1. The voltage-regulating triode is a 24V voltage-regulating tube with the model WS78L24. The 2nd pin of the voltage-regulating triode T1 and the other end of the sliding rheostat R9 are connected to the negative pole of the 24V battery. The 3rd pin of the voltage-regulating triode T1 is connected to the middle contact of the sliding rheostat R9. The collector of the triode Q5 is connected to the positive pole of a diode D1. The negative pole of the diode D1 is connected to the positive pole of a diode D2. The negative pole of the diode D2 is connected to the positive pole of a diode D3. The negative pole of the diode D3 is connected to the negative pole of the 24V battery.

[0035] When the voltage of each 24V battery is less than 24 volts, the voltage-regulating triode T1 does not absorb current, that is, Ib flowing through the base of the triode Q5 is equal to 0. Therefore, Ic flowing through the emitter of the triode Q5 is also equal to 0, and the triode Q5 is turned off. The charging current charges each 24V battery in turn. When the voltage across one of the 24V batteries reaches 24V, the voltage-regulating triode T1 in the equalizing circuit connected in parallel with it absorbs current, that is, Ib flowing through the base of the triode Q5 is greater than 0. Therefore, Ic flowing through the emitter of the triode Q5 is also greater than 0, and the triode Q5 is turned on. The charging current of this 24V battery will be bypassed, and only the other 24V battery is charged. Under the condition of a certain charging voltage, each 24V battery can be charged quickly and evenly.

[0036] The description of the present invention is given for purposes of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A modular energy storage and power distribution system, characterized in that: It includes a central module, a voice module, a charging module, and a power distribution module. The central module is connected to the voice module, the charging module, and the power distribution module, and a display screen is also connected to the central module; The central module includes a chip U1, the model of the chip U1 is STM32F373CCT6. The 3rd pin of the chip U1 is connected to the 1st pin of the crystal oscillator Y1 and one end of the capacitor C1. The 4th pin of the chip U1 is connected to the 3rd pin of the crystal oscillator Y1 and one end of the capacitor C2. The other end of the capacitor C1, the other end of the capacitor C2, and the 2nd pin of the crystal oscillator Y1 are connected to the ground wire. The 7th pin of the chip U1 is connected to one end of the resistor R1 and one end of the capacitor C3. The other end of the resistor R1 is connected to the power supply +3.3V. The other end of the capacitor C3 is connected to the ground wire. The 12th pin, 31st pin, and 63rd pin of the chip U1 are connected to the power supply +3.3V. The 13th pin, 32nd pin, and 64th pin of the chip U1 are connected to the ground wire.

2. The modular energy storage and power distribution system according to claim 1, wherein: The voice module includes a chip U7, the model of the chip U7 is SNR9902VR. The 1st pin of the chip U7 is connected to the power supply +5V. The 2nd pin of the chip U7 is connected to the ground wire. The 3rd pin of the chip U7 is connected to the 1st pin of the voice receiver MY. The 4th pin of the chip U7 is connected to the 2nd pin of the voice receiver MY. The 5th pin of the chip U7 is connected to the 1st pin of the voice player LS. The 6th pin of the chip U7 is connected to the 2nd pin of the voice player LS. The 7th pin of the chip U7 is connected to the 48th pin of the chip U1. The 8th pin of the chip U7 is connected to the 47th pin of the chip U1.

3. The modular energy storage and power distribution system according to claim 1, wherein: The power distribution module includes a contactor KM1. The input end of the contactor KM1 is connected to three-phase alternating current AC380V. The three phases of the three-phase alternating current AC380V include phase A, phase B, and phase C. A current transformer HA is provided on the surface of phase A, a current transformer HB is provided on the surface of phase B, and a current transformer HC is provided on the surface of phase C. The output end of the contactor KM1 is also connected to a load FZ, and a switching circuit is also provided between the output end of the contactor KM1 and the load FZ.

4. The modular energy storage and power distribution system according to claim 3, wherein: The switching circuit includes a chip U2. The chip U2 is an optocoupler chip, and the model is EL357N. The 1st pin of the chip U2 is connected to one end of the resistor R2. The other end of the resistor R2 is connected to the 16th pin of the chip U1. The 2nd pin of the chip U2 is connected to the ground wire. The 3rd pin of the chip U2 is connected to the power supply +48V. The 4th pin of the chip U2 is connected to the control end of the contactor KM1.

5. The modular energy storage and power distribution system according to claim 4, characterized in that: The switching circuit also includes a chip U3, the model of the chip U3 is PT7M6233CLXTA3E. The 3rd pin of the chip U3 is connected to the 20th pin of the chip U1, the drain of the field effect transistor Q1, and one end of the resistor R4. The other end of the resistor R4 is connected to the positive pole of the light-emitting diode D6. The negative pole of the light-emitting diode D6 is connected to the 1st pin of the chip U3, one end of the resistor R5, and the base of the triode Q4. The other end of the resistor R5 is connected to the base of the triode Q2. The collector of the triode Q2 is connected to the gate of the field effect transistor Q1. The emitter of the triode Q2 and the 2nd pin of the chip U3 are connected to the ground wire.

6. The modular energy storage and power distribution system according to claim 5, characterized in that: One end of a resistor R8 and pin 1 of a chip U6 are connected to the source electrode of the field effect transistor Q1. The chip U6 is a thyristor with the model number MTC200. The other end of the resistor R8 and pin 2 of the chip U6 are connected to the ground wire. Pin 3 of the chip U6 is connected to a first load terminal FZ1, and pin 4 of the chip U6 is connected to phase A of the three-phase alternating current AC380V.

7. The modular energy storage and power distribution system according to claim 5, characterized in that: One end of a resistor R6 and the gate electrode of the field effect transistor Q3 are connected to the emitter of the triode Q4. The other end of the resistor R6 is connected to the ground wire. The collector of the triode Q4 is connected to the drain electrode of the field effect transistor Q3 and pin 21 of the chip U1. One end of a resistor R7 and pin 1 of the chip U5 are connected to the source electrode of the field effect transistor Q3. The chip U5 is a thyristor with the model number MTC200. The other end of the resistor R7 and pin 2 of the chip U5 are connected to the ground wire. Pin 3 of the chip U5 is connected to the first load terminal FZ1, and pin 4 of the chip U5 is connected to phase B of the three-phase alternating current AC380V.

8. The modular energy storage and power distribution system according to claim 4, wherein: The switching circuit further includes a chip U4 with the model number MAX7044. Pin 1 and pin 8 of the chip U4 are connected to the power supply +3.3V. Pin 2 of the chip U4 is connected to one end of a resistor R3 and the signal output terminal HAO of the current transformer HA. The other end of the resistor R3, pin 3 and pin 4 of the chip U4 are connected to the ground wire. Pin 5 of the chip U4 is connected to pin 34 of the chip U1. Pin 6 of the chip U4 is connected to pin 35 of the chip U1. Pin 7 of the chip U4 is connected to pin 36 of the chip U1.

9. The modular energy storage and power distribution system according to claim 1, characterized in that: The charging module includes a switch block U8 which is a switching power supply. The input end of the switch block U8 is connected to the two-phase alternating current AC220V, and the output end of the switch block U8 is connected to the power supplies +48V, +5V and +3.3V. The charging module further includes an energy storage group DC. The energy storage group DC includes 24V batteries. There are two 24V batteries connected in series. An equalizing circuit is also connected in parallel at both the positive and negative electrodes of each 24V battery. The positive electrode of the series-connected 24V batteries is connected to the power supply +48V, and the negative electrode of the series-connected 24V batteries is connected to the ground wire.

10. A modular energy storage and power distribution system according to claim 9, characterized in that: The equalizing circuit includes a triode Q5. The emitter of the triode Q5 is connected to one end of a resistor R11, one end of a sliding rheostat R9 and the positive electrode of the 24V battery. The emitter of the triode Q5 is also connected to one end of a resistor R10. The other end of the resistor R10 is connected to the positive electrode of a light-emitting diode D5. The negative electrode of the light-emitting diode D5 is connected to the negative electrode of the 24V battery. The other end of the resistor R11 is connected to the base of the triode Q5 and pin 1 of a voltage stabilizing triode T1. The voltage stabilizing triode is a 24V voltage stabilizing tube with the model number WS78L24. Pin 2 of the voltage stabilizing triode T1 and the other end of the sliding rheostat R9 are connected to the negative electrode of the 24V battery. Pin 3 of the voltage stabilizing triode T1 is connected to the middle contact of the sliding rheostat R9. The collector of the triode Q5 is connected to the positive electrode of a diode D1. The negative electrode of the diode D1 is connected to the positive electrode of a diode D2. The negative electrode of the diode D2 is connected to the positive electrode of a diode D3. The negative electrode of the diode D3 is connected to the negative electrode of the 24V battery.

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