Mobile power supply for on-site maintenance of energy storage

Abstract

The invention discloses a mobile power supply for on-site maintenance of energy storage. The mobile power supply comprises a photovoltaic module, a battery module, a charging and discharging management module, a voltage stabilization module, an inversion module, a direct current display module, an alternating current display module and an alternating current output module. The mobile power supply provided by the invention is fewer in used devices, lighter in equipment weight and convenient to carry on site, the mobile power supply is charged by adopting a photovoltaic module, the problem that a charging power supply cannot be found outdoors is solved, a battery charging and discharging management module is built by using a pure hardware circuit, software is not used, and the cost is reduced. The debugging production difficulty is reduced, and the production cost is reduced; according to the mobile power supply battery, the detachable ternary lithium battery module is adopted, multiple groups of batteries can be carried, the long-time field use requirement can be met, and the use requirement at night and on cloudy and rainy days can also be met.

Description

Technical Field

[0001] The invention relates to the technical field of energy storage system integration, and in particular to a mobile power supply for on-site maintenance of energy storage. Background Art

[0002] Industrial and commercial energy storage can not only improve the stability and reliability of the power grid, but also improve the quality of electric energy. Energy storage equipment can quickly respond to grid demand, adjust voltage and frequency, effectively reduce harmonics and flicker in the power system, ensure the quality and stability of electric energy, and thus improve the quality of power supply. By storing and releasing energy during peak and valley periods, industrial and commercial energy storage can reduce energy consumption during peak energy consumption periods, reduce peak electricity consumption, and thus reduce the energy consumption costs of enterprises. At the same time, during the valley period, the energy can be stored at a cheap price and released during peak periods, reducing the energy procurement costs of enterprises, thereby improving the economic benefits of enterprises.

[0003] Since industrial and commercial energy storage equipment has the characteristics of small size, small footprint, and the layout location must meet fire safety regulations, there is generally no maintenance power supply near the equipment. Energy storage equipment, as a power electronic device, requires regular maintenance. At this time, a device that is easy to carry and easy to charge is needed as a maintenance power supply.

[0004] There are generally two existing solutions: 1. Use a UPS (uninterruptible power supply) purchased on the market as a maintenance power supply; 2. Use a vehicle-mounted inverter as a maintenance power supply. In actual application, in the first solution, a small-capacity UPS (uninterruptible power supply) cannot work for a long time, and there is no place to charge it on site, which cannot meet the needs of on-site use all day. A large-capacity UPS (uninterruptible power supply) has the problem of being too large in size and weight, and is not convenient to carry when used on site; in the second solution using a vehicle-mounted inverter, a large number of project sites are inside the factory, and vehicles are not allowed to enter, so the vehicle-mounted inverter cannot be used for power supply. Based on the above reasons, the present invention proposes a mobile power supply for on-site maintenance of energy storage. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a mobile power supply that uses fewer devices, is light in weight, and is convenient to carry on site. At the same time, the mobile power supply is charged by a photovoltaic component to charge the power supply, thereby solving the problem that a charging power supply cannot be found outdoors. A battery charge and discharge management module is constructed using a pure hardware circuit without the use of software, thereby reducing the difficulty of debugging and production and reducing production costs. The mobile power supply battery of the present invention adopts a detachable ternary lithium battery module, and multiple groups of batteries can be carried, which can meet the needs of longer on-site use and can also meet the needs of use at night and on rainy days.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mobile power supply for on-site maintenance of energy storage, comprising a photovoltaic component module, a battery module module, a charge and discharge management module, a voltage stabilization module, an inverter module, a DC display module, an AC display module and an AC output module;

[0009] The photovoltaic assembly module includes a photovoltaic assembly;

[0010] The battery module comprises a plurality of replaceable battery modules and an electrolytic capacitor C1;

[0011] The charge and discharge management module includes a charge management module and a discharge management module;

[0012] The charging management module includes a diode D1, a resistor R9, a MOS tube Q1, a resistor R10, a transistor Q2, a resistor R1, a potentiometer R2, a resistor R3, a resistor R4, a potentiometer R5, a resistor R6, a resistor R7, a resistor R8 and a comparator U1;

[0013] The discharge management module includes a diode D2, a resistor R21, a MOS tube Q3, a resistor R22, a transistor Q4, a resistor R20, a resistor R19, a transistor Q5, a resistor R11, a potentiometer R12, a resistor R13, a resistor R14, a potentiometer R15, a resistor R16, a resistor R17, a resistor R18 and a comparator U2;

[0014] The voltage stabilizing module includes a diode D2, an electrolytic capacitor C2, a ceramic capacitor C3, a power management chip XL4016, an inductor L1, a diode D3, a resistor R23, a resistor R24, and an electrolytic capacitor C4;

[0015] The inverter module includes a 12V to 220V inverter circuit unit;

[0016] The DC display module includes a digital tube display capable of collecting DC current and voltage;

[0017] The AC display module includes a digital tube display capable of collecting AC current and voltage;

[0018] The AC output module includes an air switch and a 220V AC socket.

[0019] Preferably, the positive electrode of the photovoltaic component of the photovoltaic component module is connected to the anode of the diode D1 in the charging management module, and the negative electrode is connected to the ground plane GND.

[0020] Preferably, the positive electrode of the battery module and the positive electrode of the electrolytic capacitor of the battery module are connected together and then connected to the battery voltage Vbat, and the negative electrode of the battery module and the negative electrode of the electrolytic capacitor are connected together and then connected to the ground plane GND.

[0021] Preferably, the anode of the diode D1 of the charging management module is connected to the positive electrode of the photovoltaic module, and the other end is connected to one end of the resistor R9 and the drain of the MOS tube Q1, the gate of the MOS tube Q1 is connected to the other end of the resistor R9 and one end of the resistor R10, the source of the MOS tube Q1 is connected to the battery voltage Vbat, the other end of the resistor R10 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 and one end of the resistor R8 are connected to the ground plane GND, the other end of the resistor R8 is connected to the gate of the transistor Q2 and one end of the resistor R7, and the other end of the resistor R7 is connected to the collector of the transistor Q2. Connected to one end of resistor R6, one end of potentiometer R5 and the output end of comparator U1, the other end of resistor R6 is connected to the power supply VCC, the other end of potentiometer R5 is connected to one end of resistor R3, one end of resistor R4 and the positive input end of comparator U1, the other end of resistor R3 is connected to the power supply VCC, the other end of resistor R4 is connected to the ground plane GND, the inverting input end of comparator U1 is connected to one end of resistor R1 and one end of potentiometer R2, the other end of resistor R1 is connected to the battery voltage Vbat, and the other end of resistor R2 is connected to the ground plane GND.

[0022] Preferably, the battery voltage Vbat of the discharge management module is connected to one end of the resistor R9 and the drain of the MOS tube Q3, the gate of the MOS tube Q3 is connected to the other end of the resistor R21 and one end of the resistor R22, the source of the MOS tube Q3 is connected to the anode of the diode D2 of the voltage stabilizing module, the other end of the resistor R22 is connected to the collector of the transistor Q4, the emitter of the transistor Q2 and one end of the resistor R20 are connected to the ground plane GND, the other end of the resistor R20 is connected to the gate of the transistor Q2 and one end of the resistor R19 and the collector of the transistor Q5, the other end of the resistor R19 is connected to the power supply VCC, the emitter of the transistor Q5 is connected to one end of the resistor R18 The other end of the resistor R18 is connected to one end of the resistor R16, one end of the potentiometer R15 and the output end of the comparator U2, the other end of the resistor R16 is connected to the power supply VCC, the other end of the potentiometer R15 is connected to one end of the resistor R13, one end of the resistor R14 and the positive input end of the comparator U2, the other end of the resistor R13 is connected to the power supply VCC, the other end of the resistor R14 is connected to the ground plane GND, the inverting input end of the comparator U2 is connected to one end of the resistor R11 and one end of the potentiometer R12, the other end of the resistor R11 is connected to the battery voltage Vbat, and the other end of the resistor R12 is connected to the ground plane GND.

[0023] Preferably, the anode of the diode D2 of the voltage stabilizing module is connected to the source of the MOS tube Q3 of the discharge management module, and the other end is connected to the positive electrode of the electrolytic capacitor C2, one end of the ceramic capacitor C3 and the VCC pin of the power management chip U3, the negative electrode of the electrolytic capacitor is connected to the ground plane GND, the other end of the ceramic capacitor C3 is connected to the VC pin of the power management chip U3, the GND pin of the power management chip U3 is connected to the ground plane GND, the SW pin of the power management chip U3 is connected to one end of the inductor L1 and the cathode of the diode D3, the anode of the diode D3 is connected to the ground plane GND, the other end of the inductor L1 is connected to one end of the resistor R23, the positive electrode of the electrolytic capacitor C4 and the positive input of the inverter module, the negative electrode of the electrolytic capacitor C4 is connected to the ground plane GND, the other end of the resistor R23 is connected to one end of the resistor R24 ​​and the FB pin of the power management chip, and the other end of the resistor R24 ​​is connected to the ground plane GND.

[0024] Preferably, the positive input of the inverter circuit of the inverter module is connected to the inductor L1, and the negative input is connected to the ground plane GND.

[0025] Preferably, the voltage detection pin of the DC display module display is connected to the battery voltage Vbat, and the current detection is connected in series to the negative electrode connection line between the photovoltaic component and the charging management module.

[0026] Preferably, the voltage detection pin of the AC display module display is connected to the output side of the inverter module, and the current detection line is connected in series with the connection line between the inverter module and the AC output module.

[0027] Preferably, the air switch inlet of the AC output module is connected to the output side of the AC output module, and the outlet is connected to the 220V socket connection port.

[0028] (III) Beneficial effects

[0029] Compared with the prior art, the present invention provides a mobile power supply for on-site maintenance of energy storage, which has the following beneficial effects: the present invention provides a mobile power supply with fewer components, lighter weight, and convenient to carry on-site; at the same time, the mobile power supply is charged by photovoltaic components to solve the problem that a charging power supply cannot be found outdoors; and a battery charge and discharge management module is constructed by using pure hardware circuits without using software, thereby reducing the difficulty of debugging and production and reducing production costs; the mobile power supply battery of the present invention adopts a detachable ternary lithium battery module, and multiple groups of batteries can be carried, which can meet the needs of on-site use for a longer period of time, and can also meet the needs of use at night and on rainy days. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a structural diagram of the control circuit of the present invention.

[0032] 10. Photovoltaic component module; 20. Battery module; 30. Charge and discharge management module; 40. Voltage stabilization module; 50. Inverter module; 60. DC display module; 70. AC display module; 80. AC output module; 301. Charge management module; 302. Discharge management module. DETAILED DESCRIPTION

[0033] In order to better understand the purpose, structure and function of the present invention, and to achieve the purpose of convenient carrying and large capacity, the present invention provides a mobile power supply with fewer devices, lighter weight, and convenient on-site carrying. At the same time, the mobile power supply uses photovoltaic components to charge the power supply, solving the problem of being unable to find a charging power supply outdoors, and uses pure hardware circuits to build a battery charge and discharge management module without using software, which reduces the difficulty of debugging production and reduces production costs; the mobile power supply battery of the present invention uses a detachable ternary lithium battery module, which can carry multiple groups of batteries, can meet the needs of longer on-site use, and can also meet the needs of use at night and on rainy days. A mobile power supply for on-site maintenance of energy storage is described in further detail.

[0034] refer to Figure 1-2, the present invention: a mobile power supply for on-site maintenance of energy storage, comprising a photovoltaic assembly module 10, a battery module module 20, a charge and discharge management module 30, a voltage stabilizing module 40, an inverter module 50, a DC display module 60, an AC display module 70 and an AC output module 80;

[0035] The photovoltaic module 10 includes a photovoltaic module;

[0036] Furthermore, the positive electrode of the photovoltaic component of the photovoltaic component module 10 is connected to the anode of the diode D1 in the charging management module 301, and the negative electrode is connected to the ground plane GND.

[0037] The battery module 20 includes a plurality of replaceable battery modules and an electrolytic capacitor C1;

[0038] Furthermore, the positive electrode of the battery module 20 is connected to the positive electrode of the electrolytic capacitor and then connected to the battery voltage Vbat, and the negative electrode of the battery module is connected to the negative electrode of the electrolytic capacitor and then connected to the ground plane GND.

[0039] The charge and discharge management module 30 includes a charge management module 301 and a discharge management module 302;

[0040] The charging management module 301 includes a diode D1, a resistor R9, a MOS tube Q1, a resistor R10, a transistor Q2, a resistor R1, a potentiometer R2, a resistor R3, a resistor R4, a potentiometer R5, a resistor R6, a resistor R7, a resistor R8 and a comparator U1;

[0041] Furthermore, the anode of the diode D1 of the charging management module 301 is connected to the positive electrode of the photovoltaic module, and the other end is connected to one end of the resistor R9 and the drain of the MOS tube Q1, the gate of the MOS tube Q1 is connected to the other end of the resistor R9 and one end of the resistor R10, the source of the MOS tube Q1 is connected to the battery voltage Vbat, the other end of the resistor R10 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 and one end of the resistor R8 are connected to the ground plane GND, the other end of the resistor R8 is connected to the gate of the transistor Q2 and one end of the resistor R7, and the other end of the resistor R7 is connected to the collector of the transistor Q2. One end is connected to one end of resistor R6, one end of potentiometer R5 and the output end of comparator U1, the other end of resistor R6 is connected to the power supply VCC, the other end of potentiometer R5 is connected to one end of resistor R3, one end of resistor R4 and the positive input end of comparator U1, the other end of resistor R3 is connected to the power supply VCC, the other end of resistor R4 is connected to the ground plane GND, the inverting input end of comparator U1 is connected to one end of resistor R1 and one end of potentiometer R2, the other end of resistor R1 is connected to the battery voltage Vbat, and the other end of resistor R2 is connected to the ground plane GND.

[0042] The discharge management module 302 includes a diode D2, a resistor R21, a MOS tube Q3, a resistor R22, a transistor Q4, a resistor R20, a resistor R19, a transistor Q5, a resistor R11, a potentiometer R12, a resistor R13, a resistor R14, a potentiometer R15, a resistor R16, a resistor R17, a resistor R18 and a comparator U2;

[0043] Further, the battery voltage Vbat of the discharge management module 302 is connected to one end of the resistor R9 and the drain of the MOS tube Q3, the gate of the MOS tube Q3 is connected to the other end of the resistor R21 and one end of the resistor R22, the source of the MOS tube Q3 is connected to the anode of the diode D2 of the voltage stabilizing module 40, the other end of the resistor R22 is connected to the collector of the transistor Q4, the emitter of the transistor Q2 and one end of the resistor R20 are connected to the ground plane GND, the other end of the resistor R20 is connected to the gate of the transistor Q2 and one end of the resistor R19 and the collector of the transistor Q5, the other end of the resistor R19 is connected to the power supply VCC, the emitter of the transistor Q5 is connected to the resistor R1 8 is connected to the ground plane GND, the other end of the resistor R18 is connected to one end of the resistor R16, one end of the potentiometer R15 and the output end of the comparator U2, the other end of the resistor R16 is connected to the power supply VCC, the other end of the potentiometer R15 is connected to one end of the resistor R13, one end of the resistor R14 and the positive input end of the comparator U2, the other end of the resistor R13 is connected to the power supply VCC, the other end of the resistor R14 is connected to the ground plane GND, the inverting input end of the comparator U2 is connected to one end of the resistor R11 and one end of the potentiometer R12, the other end of the resistor R11 is connected to the battery voltage Vbat, and the other end of the resistor R12 is connected to the ground plane GND.

[0044] The voltage stabilizing module 40 includes a diode D2, an electrolytic capacitor C2, a ceramic capacitor C3, a power management chip XL4016, an inductor L1, a diode D3, a resistor R23, a resistor R24, and an electrolytic capacitor C4;

[0045] Furthermore, the anode of the diode D2 of the voltage stabilizing module 40 is connected to the source of the MOS tube Q3 of the discharge management module, and the other end is connected to the positive electrode of the electrolytic capacitor C2, one end of the ceramic capacitor C3 and the VCC pin of the power management chip U3, the negative electrode of the electrolytic capacitor is connected to the ground plane GND, the other end of the ceramic capacitor C3 is connected to the VC pin of the power management chip U3, the GND pin of the power management chip U3 is connected to the ground plane GND, the SW pin of the power management chip U3 is connected to one end of the inductor L1 and the cathode of the diode D3, the anode of the diode D3 is connected to the ground plane GND, the other end of the inductor L1 is connected to one end of the resistor R23, the positive electrode of the electrolytic capacitor C4 and the positive input of the inverter module 50, the negative electrode of the electrolytic capacitor C4 is connected to the ground plane GND, the other end of the resistor R23 is connected to one end of the resistor R24 ​​and the FB pin of the power management chip, and the other end of the resistor R24 ​​is connected to the ground plane GND.

[0046] The inverter module 50 includes a 12V to 220V inverter circuit unit;

[0047] Furthermore, the positive input terminal of the inverter circuit of the inverter module 50 is connected to the inductor L1, and the negative input terminal is connected to the ground plane GND.

[0048] The DC display module 60 includes a digital tube display capable of collecting DC current and voltage;

[0049] Furthermore, the voltage detection pin of the DC display module 60 is connected to the battery voltage Vbat, and the current detection pin is connected in series to the negative connection line between the photovoltaic component and the charging management module 301.

[0050] The AC display module 70 includes a digital tube display capable of collecting AC current and voltage;

[0051] Furthermore, the voltage detection pin of the display of the AC display module 70 is connected to the output side of the inverter module 50 , and the current detection line is connected in series with the connection line between the inverter module 50 and the AC output module 80 .

[0052] The AC output module 80 includes an air switch and a 220V AC socket;

[0053] Furthermore, the air switch inlet of the AC output module 80 is connected to the output side of the AC output module, and the outlet is connected to the 220V socket connection port.

[0054] Working principle: When the mobile power supply is in use, after the battery module 20 is put into the circuit, the charge and discharge management module 30 detects whether the battery voltage meets the charge and discharge requirements. The detection module adopts a hysteresis circuit. When the battery voltage exceeds 25V, charging is stopped to prevent the battery from overcharging. When the battery voltage is lower than 17.8V, the charging mode is turned on. When the battery voltage is greater than 21V, discharging begins. When the battery voltage is lower than 17V, discharging stops to prevent the battery from over-discharging. The potentiometer can adjust the threshold of the charge and discharge voltage. The battery output voltage is stepped down to a stable DC 12V voltage through the voltage regulator module 40, and becomes an AC 220V output through a 12V to 220V inverter circuit. After passing through the AC air switch, an AC 220V power supply is output.

[0055] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A mobile power supply for on-site maintenance of energy storage, characterized in that: It comprises a photovoltaic assembly module (10), a battery module (20), a charge and discharge management module (30), a voltage stabilization module (40), an inverter module (50), a direct current display module (60), an alternating current display module (70) and an alternating current output module (80); The photovoltaic component module (10) comprises a photovoltaic component; The battery module (20) comprises a plurality of replaceable battery modules and an electrolytic capacitor C1; The charge and discharge management module (30) comprises a charge management module (301) and a discharge management module (302); The charging management module (301) comprises a diode D1, a resistor R9, a MOS tube Q1, a resistor R10, a transistor Q2, a resistor R1, a potentiometer R2, a resistor R3, a resistor R4, a potentiometer R5, a resistor R6, a resistor R7, a resistor R8 and a comparator U1; The discharge management module (302) comprises a diode D2, a resistor R21, a MOS tube Q3, a resistor R22, a transistor Q4, a resistor R20, a resistor R19, a transistor Q5, a resistor R11, a potentiometer R12, a resistor R13, a resistor R14, a potentiometer R15, a resistor R16, a resistor R17, a resistor R18 and a comparator U2; The voltage stabilizing module (40) comprises a diode D2, an electrolytic capacitor C2, a ceramic capacitor C3, a power management chip XL4016, an inductor L1, a diode D3, a resistor R23, a resistor R24, and an electrolytic capacitor C4; The inverter module (50) comprises a 12V to 220V inverter circuit unit; The DC display module (60) comprises a digital tube display capable of collecting DC current and voltage; The AC display module (70) comprises a digital tube display capable of collecting AC current and voltage; The AC output module (80) comprises an air switch and a 220V AC socket.

2. A mobile power source for on-site maintenance of energy storage according to claim 1, characterized in that: The positive electrode of the photovoltaic component of the photovoltaic component module (10) is connected to the anode of the diode D1 in the charging management module (301), and the negative electrode is connected to the ground plane GND.

3. A mobile power source for on-site maintenance of energy storage according to claim 2, characterized in that: The battery module positive electrode of the battery module (20) is connected to the positive electrode of the electrolytic capacitor and then connected to the battery voltage Vbat, and the battery module negative electrode is connected to the negative electrode of the electrolytic capacitor and then connected to the ground plane GND.

4. A mobile power source for on-site maintenance of energy storage according to claim 3, characterized in that: The anode of the diode D1 of the charging management module (301) is connected to the positive electrode of the photovoltaic module, and the other end is connected to one end of the resistor R9 and the drain of the MOS tube Q1. The gate of the MOS tube Q1 is connected to the other end of the resistor R9 and one end of the resistor R10. The source of the MOS tube Q1 is connected to the battery voltage Vbat. The other end of the resistor R10 is connected to the collector of the transistor Q2. The emitter of the transistor Q2 and one end of the resistor R8 are connected to the ground plane GND. The other end of the resistor R8 is connected to the gate of the transistor Q2 and one end of the resistor R7. The other end of the resistor R7 is connected to the collector of the transistor Q2. Connected to one end of resistor R6, one end of potentiometer R5 and the output end of comparator U1, the other end of resistor R6 is connected to the power supply VCC, the other end of potentiometer R5 is connected to one end of resistor R3, one end of resistor R4 and the positive input end of comparator U1, the other end of resistor R3 is connected to the power supply VCC, the other end of resistor R4 is connected to the ground plane GND, the inverting input end of comparator U1 is connected to one end of resistor R1 and one end of potentiometer R2, the other end of resistor R1 is connected to the battery voltage Vbat, and the other end of resistor R2 is connected to the ground plane GND.

5. A mobile power source for on-site maintenance of energy storage according to claim 4, characterized in that: The battery voltage Vbat of the discharge management module (302) is connected to one end of the resistor R9 and the drain of the MOS tube Q3, the gate of the MOS tube Q3 is connected to the other end of the resistor R21 and one end of the resistor R22, the source of the MOS tube Q3 is connected to the anode of the diode D2 of the voltage stabilizing module (40), the other end of the resistor R22 is connected to the collector of the transistor Q4, the emitter of the transistor Q2 and one end of the resistor R20 are connected to the ground plane GND, the other end of the resistor R20 is connected to the gate of the transistor Q2 and one end of the resistor R19 and the collector of the transistor Q5, the other end of the resistor R19 is connected to the power supply VCC, the emitter of the transistor Q5 is connected to the resistor R18 One end of the resistor R18 is connected to the ground plane GND, the other end of the resistor R18 is connected to one end of the resistor R16, one end of the potentiometer R15 and the output end of the comparator U2, the other end of the resistor R16 is connected to the power supply VCC, the other end of the potentiometer R15 is connected to one end of the resistor R13, one end of the resistor R14 and the positive input end of the comparator U2, the other end of the resistor R13 is connected to the power supply VCC, the other end of the resistor R14 is connected to the ground plane GND, the inverting input end of the comparator U2 is connected to one end of the resistor R11 and one end of the potentiometer R12, the other end of the resistor R11 is connected to the battery voltage Vbat, and the other end of the resistor R12 is connected to the ground plane GND.

6. A mobile power source for on-site maintenance of energy storage according to claim 5, characterized in that: The anode of the diode D2 of the voltage stabilizing module (40) is connected to the source of the MOS tube Q3 of the discharge management module, and the other end is connected to the positive electrode of the electrolytic capacitor C2, one end of the ceramic capacitor C3 and the VCC pin of the power management chip U3, the negative electrode of the electrolytic capacitor is connected to the ground plane GND, the other end of the ceramic capacitor C3 is connected to the VC pin of the power management chip U3, the GND pin of the power management chip U3 is connected to the ground plane GND, the SW pin of the power management chip U3 is connected to one end of the inductor L1 and the cathode of the diode D3, the anode of the diode D3 is connected to the ground plane GND, the other end of the inductor L1 is connected to one end of the resistor R23, the positive electrode of the electrolytic capacitor C4 and the positive input of the inverter module (50), the negative electrode of the electrolytic capacitor C4 is connected to the ground plane GND, the other end of the resistor R23 is connected to one end of the resistor R24 ​​and the FB pin of the power management chip, and the other end of the resistor R24 ​​is connected to the ground plane GND.

7. A mobile power source for on-site maintenance of energy storage according to claim 6, characterized in that: The positive input of the inverter circuit of the inverter module (50) is connected to the inductor L1, and the negative input end is connected to the ground plane GND.

8. A mobile power source for on-site maintenance of energy storage according to claim 7, characterized in that: The voltage detection pin of the display of the DC display module (60) is connected to the battery voltage Vbat, and the current detection is connected in series to the negative electrode connection line of the photovoltaic component and the charging management module (301).

9. A mobile power source for on-site maintenance of energy storage according to claim 8, characterized in that: The voltage detection pin of the display of the AC display module (70) is connected to the output side of the inverter module (50), and the current detection line is connected in series with the connection line between the inverter module (50) and the AC output module (80).

10. A mobile power source for on-site maintenance of energy storage according to claim 9, characterized in that: The air switch inlet terminal of the AC output module (80) is connected to the output side of the AC output module, and the outlet terminal is connected to the 220V socket connection port.

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