Integrated device integrating battery energy storage and inversion functions

Abstract

The invention discloses an integrated device integrating battery energy storage and inversion functions, the integrated device comprises a battery energy storage cabinet and an inverter, the inverter is installed above the battery energy storage cabinet to form an integrated structure, a bridging cabinet is arranged at the top end of the battery energy storage cabinet, a BMS protection plate is installed in the bridging cabinet, and the BMS protection plate is connected with the battery energy storage cabinet. A battery module is installed in the battery energy storage cabinet, the inverter comprises an inverter cabinet and an inverter circuit board, a wiring groove is formed in the bottom of the inverter cabinet, a first copper bar and a second copper bar are installed on the BMS protection board, and a battery input negative busbar and a battery input positive busbar are led out of the battery energy storage cabinet. And the BMS protection plate in the bridging cabinet is electrically connected with an inverter circuit board in the inverter cabinet through a wiring groove, a battery input negative busbar and a battery input positive busbar. According to the invention, the inverter and the battery energy storage cabinet are stacked and fixed up and down to form an integrated structure, so that the device not only has a battery energy storage function, but also has an inversion function, does not need to be externally connected with redundant cables, and reduces external wiring.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage batteries, and in particular to an integrated device integrating battery energy storage and inverter functions. Background Art

[0002] With the shortage of traditional energy and the continuous improvement of people's living standards, the demand for energy storage electricity is increasing. The development of lithium batteries has a great impact on the energy storage industry. However, the electricity stored in energy storage batteries is direct current, and most of the household appliances used in daily life are alternating current. This requires the battery power to be inverted into alternating current. Therefore, existing manufacturers have designed an inverter to connect the inverter to the energy storage battery through external wiring. The existing energy storage batteries and inverters have the following shortcomings during use:

[0003] 1) The energy storage battery and inverter are separate and need to be connected through external cables. The external wiring will be more complicated and require more cables;

[0004] 2) External wiring is required to connect the energy storage battery to the inverter, which makes the appearance of the entire product appear inconsistent and inconvenient for subsequent after-sales maintenance. Summary of the invention

[0005] In view of the technical problems existing in the prior art, the present invention provides an integrated device which can stack and fix an inverter and a battery energy storage cabinet up and down to form an integrated structure, so that the device has not only a battery energy storage function but also an inverter function, and a wiring groove is provided on a bridge cabinet at the top of the battery energy storage cabinet to realize a bidirectional current output between the battery module and the inverter, without the need for external redundant cables, reducing external wiring, and improving the convenience of assembling the integrated device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An integrated device integrating battery energy storage and inverter functions, the integrated device comprising a battery energy storage cabinet and an inverter, the inverter being installed above the battery energy storage cabinet to form an integrated structure, a bridge cabinet being provided at the top of the battery energy storage cabinet, a BMS protection board being installed in the bridge cabinet of the battery energy storage cabinet, a battery module being installed inside the battery energy storage cabinet, the BMS protection board being located above the battery module and being connected thereto, the inverter comprising an inverter cabinet and an inverter circuit board, the inverter circuit board being installed inside the inverter cabinet, a wiring groove being provided at the bottom of the inverter cabinet, a first copper bar and a second copper bar being installed on the BMS protection board, the second copper bar being located at the first copper bar On one side, the BMS protection board is electrically connected to the battery module in the battery energy storage cabinet through the first copper busbar, and a battery input negative busbar and a battery input positive busbar are led out from the inside of the battery energy storage cabinet. One end of the battery input positive busbar is electrically connected to the battery module, and the other end of the battery input positive busbar is electrically connected to the inverter circuit board inside the inverter cabinet through the wiring groove. One end of the battery input negative busbar is electrically connected to the second copper busbar on the BMS protection board, and the other end of the battery input negative busbar is electrically connected to the inverter circuit board inside the inverter cabinet through the wiring groove. The BMS protection board in the bridge cabinet is electrically connected to the inverter circuit board inside the inverter cabinet through the wiring groove and the battery input negative busbar.

[0008] Furthermore, the upper end of the inverter cabinet is fixed with a photovoltaic connector positive interface, a photovoltaic connector negative interface, a USB charging interface, a mains input interface, an AC output interface, and a CAN communication port in sequence from left to right.

[0009] Furthermore, the battery module includes a fixed chamber, a plurality of battery cells, and a plurality of groups of battery cell fixing strips. The battery cells are installed side by side in the fixed chamber, and the plurality of groups of battery cell fixing strips are installed at intervals on the outside of the battery cells so that the battery cells can be detachably installed in the fixed chamber.

[0010] Furthermore, the inverter circuit board includes a DC switch module, a DC filter module, a DC-DC conversion module, an inverter module, an AC relay, and an AC filter module, and the DC switch module, DC filter module, DC-DC conversion module, inverter module, AC relay, and AC filter module are electrically connected in sequence.

[0011] Furthermore, the BMS protection board includes a power management module, a battery management analog front-end module, an MCU control module, a power switch module, and a communication module. The battery module is electrically connected to the power management module and the battery management analog front-end module, and the battery management analog front-end module, the power switch module, and the communication module are electrically connected to the MCU control module.

[0012] Furthermore, the battery module includes a connecting aluminum sheet, each battery cell is provided with a pair of positive terminals and negative terminals with opposite polarities, the connecting aluminum sheet is located between the positive terminals and negative terminals with opposite polarities of two adjacent battery cells, and the two adjacent battery cells are electrically connected through the connecting aluminum sheet.

[0013] Furthermore, the inverter includes two sets of heat dissipation structures, and the bottom of the inverter cabinet is provided with two sets of heat dissipation ducts matching the two sets of heat dissipation structures. The two sets of heat dissipation structures are installed above the two sets of heat dissipation ducts of the inverter cabinet and below the inverter circuit board.

[0014] Furthermore, a protective cover is hinged at the upper end of the inverter cabinet, and the protective cover covers the periphery of the photovoltaic connector positive interface, the photovoltaic connector negative interface, the USB charging interface, the mains input interface, the AC output interface, and the CAN communication port.

[0015] Furthermore, the integrated device includes a plurality of moving wheels, and the plurality of moving wheels are respectively installed at four corners below the battery energy storage cabinet.

[0016] Furthermore, a display screen and a plurality of control buttons are installed in front of the inverter cabinet, and the plurality of control buttons are distributed below the display screen at intervals.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) The integrated device of the present invention comprises a battery energy storage cabinet and an inverter. The inverter is installed above the battery energy storage cabinet to form an integrated structure. A bridge cabinet is provided at the top of the battery energy storage cabinet. A BMS protection board is installed in the bridge cabinet. A battery module is installed inside the battery energy storage cabinet. The inverter comprises an inverter cabinet and an inverter circuit board. A wiring groove is provided at the bottom of the inverter cabinet. A first copper bar and a second copper bar are installed on the BMS protection board. The BMS protection board is electrically connected to the battery module in the battery energy storage cabinet through the first copper bar. A battery input negative busbar and a battery input positive busbar are led out from the inside of the battery energy storage cabinet. The BMS protection board in the bridge cabinet is electrically connected to the inverter circuit board inside the inverter cabinet through the wiring groove, the battery input negative busbar and the battery input positive busbar. The present invention stacks the inverter and the battery energy storage cabinet up and down to form an integrated structure, so that the device not only has a battery energy storage function, but also has an inverter function. By arranging a wiring groove on the bridge cabinet at the top of the battery energy storage cabinet to realize the two-way current output and internal wiring connection between the battery module and the inverter, there is no need to connect extra cables, thus reducing external wiring and improving the convenience of assembling the integrated device.

[0019] 2) The present invention has photovoltaic connector positive interface, photovoltaic connector negative interface, USB charging interface, mains input interface, AC output interface, and CAN communication port fixed in sequence from left to right on the upper end of the inverter cabinet. The present invention can connect the solar photovoltaic panel through the photovoltaic connector positive interface and photovoltaic connector negative interface, connect 220V AC through the mains input interface, connect the load through the USB charging interface, and convert the low-voltage DC power stored in the battery module into AC220V through the inverter circuit board to power the AC load. The battery energy storage cabinet and the inverter group are combined and assembled into one, realizing photovoltaic charging and mains charging, providing convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the integrated device of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the integrated device of the present invention from another angle;

[0022] Figure 3 It is a structural exploded view of the integrated device of the present invention;

[0023] Figure 4 For the present invention Figure 3 A detailed enlarged schematic diagram of the middle A part;

[0024] Figure 5 It is a schematic diagram of the internal structure of the integrated device of the present invention;

[0025] Figure 6 For the present invention Figure 5 A detailed enlarged diagram of part B in the middle;

[0026] Figure 7 A schematic diagram of the internal structure of the integrated device of the present invention from another angle;

[0027] Figure 8 For the present invention Figure 7 A detailed enlarged schematic diagram of the middle C section;

[0028] Fig. 9 For the present invention Figure 7 Rear view of

[0029] Fig.10 For the present invention Fig. 9 Exploded diagram of

[0030] Fig.11 A schematic diagram of the relationship between the battery energy storage cabinet and the bridge cabinet of the present invention;

[0031] Fig.12 This is an exploded view of the structure inside the battery energy storage cabinet of the present invention;

[0032] Fig.13 It is a signal flow diagram of each circuit module in the inverter circuit board of the present invention;

[0033] Fig.14 It is a signal flow diagram of each circuit module in the BMS protection board of the present invention;

[0034] Fig.15 The schematic diagram of the circuit of the communication module in the BMS protection board of the present invention.

[0035] In the figure: battery energy storage cabinet 1, battery module 11, fixed chamber 111, battery cell 112, battery cell fixed pressure strip 113, fixed part 114, connecting aluminum sheet 115, battery cell load-bearing strip 116, silicone shock-absorbing pad 117, battery input negative busbar 12, battery input positive busbar 13, inverter 2, inverter cabinet 21, photovoltaic connector positive electrode interface 211, photovoltaic connector negative electrode interface 212, USB charging interface 213, mains input interface 214, AC output interface 215, CAN communication port 216, inverter circuit board 22, DC switch module 221, DC filter module 222, DC-DC conversion module 223, inverter module 224, AC relay 225, AC filter module 226, wiring slot 23, protective cover 24, display screen 25, control button 26, heat dissipation structure 27, bridge cabinet 3, BMS protection board 31, first copper bar 311, second copper bar 312, moving wheel 4. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings, which are part of this specification and illustrate the principles of the present invention through embodiments. Other aspects, features and advantages of the present invention will become clear from the detailed description. In the drawings referred to, the same or similar parts in different figures are represented by the same reference numerals.

[0037] like Figure 1-Figure 10As shown, the first embodiment of the present invention provides an integrated device integrating battery energy storage and inverter functions, the integrated device includes a battery energy storage cabinet 11 and an inverter 2, the inverter 2 is installed above the battery energy storage cabinet 11 to form an integrated structure, a bridge cabinet 3 is provided on the top of the battery energy storage cabinet 11, a BMS protection board 31 is installed in the bridge cabinet 3 of the battery energy storage cabinet 11, a battery module 11 is installed inside the battery energy storage cabinet 11, the BMS protection board 31 is located above the battery module 11 and connected thereto, the inverter 2 includes an inverter cabinet 21 and an inverter circuit board 22, the inverter circuit board 22 is installed inside the inverter cabinet 21, a wiring slot 23 is provided at the bottom of the inverter cabinet 21, and the BMS The protection board 31 is provided with a first copper bar 311 and a second copper bar 312, wherein the second copper bar 312 is located on one side of the first copper bar 311. The BMS protection board 31 is electrically connected to the battery module 11 in the battery energy storage cabinet 11 through the first copper bar 311. A battery input negative busbar 12 and a battery input positive busbar 13 are led out from the inside of the battery energy storage cabinet 11. One end of the battery input positive busbar 13 is electrically connected to the battery module 11, and the other end of the battery input positive busbar 13 is electrically connected to the inverter circuit board 22 inside the inverter cabinet 21 through the wiring slot 23. One end of the battery input negative busbar 12 is electrically connected to the second copper bar 312 on the BMS protection board 31, and the other end of the battery input negative busbar 12 is electrically connected to the inverter circuit board 22 inside the inverter cabinet 21. The inverter circuit board 22 in the inverter cabinet 21 is electrically connected through the wiring slot 23, and the BMS protection board 31 in the bridge cabinet 3 is electrically connected to the inverter circuit board 22 in the inverter cabinet 21 through the wiring slot 23 and the battery input negative busbar 12. In specific implementation, the photovoltaic connector positive interface 211, the photovoltaic connector negative interface 212, the USB charging interface 213, the mains input interface 214, the AC output interface 215, and the CAN communication port 216 are fixed in sequence from left to right at the upper end of the inverter cabinet 21. The present invention can connect the solar photovoltaic panel through the photovoltaic connector positive interface 211 and the photovoltaic connector negative interface 212, and connect the 220V through the mains input interface 214. AC power is connected to the load through the USB charging interface 213. When there is no mains power, the power stored in the battery module 11 inside the battery energy storage cabinet 11 is converted into AC power through the inverter circuit board 22 of the inverter 2, and output through the USB charging interface 213 and the AC output interface 215. The load is connected to the AC output connector of the inverter 2 so that the inverter 2 can input AC power to the load. When the battery module 11 has no power and there is no mains power, the photovoltaic connector positive interface 211 and the photovoltaic connector negative interface 212 are connected to the solar photovoltaic panel, and the DC power on the solar photovoltaic panel is inverted by the inverter circuit board 22 of the inverter 2, and then the battery module 11 inside the battery energy storage cabinet 11 is powered. The low-voltage DC power stored in the battery module 11 can be converted into AC220V mains power through the inverter circuit board 22 to power the AC load.The battery energy storage cabinet 11 and two inverter groups are assembled into one body to realize photovoltaic charging and mains charging, providing convenience for users.

[0038] The present invention stacks the inverter 2 and the battery energy storage cabinet 11 up and down to form an integrated structure, so that the device not only has a battery energy storage function, but also has an inverter function. The present invention sets a wiring slot 23 on the bridge cabinet 3 at the top of the battery energy storage cabinet 11, and uses the battery input negative busbar 12 and the battery input positive busbar 13 to realize the connection between the inverter circuit board 22 and the BMS protection board 31 and the battery module 11, so as to realize the two-way current output between the battery module 11 and the inverter 2, without the need for external redundant cables, reducing external wiring, reducing the cost of heavy cables, simplifying the installation steps, and improving the assembly convenience of the integrated device.

[0039] The upper end of the inverter cabinet 21 is hinged with a protective cover 24, which covers the outer periphery of the photovoltaic connector positive electrode interface 211, the photovoltaic connector negative electrode interface 212, the USB charging interface 213, the mains input interface 214, the AC output interface 215, and the CAN communication port 216. The inverter 2 includes two groups of heat dissipation structures 27, and two groups of heat dissipation air ducts matching the two groups of heat dissipation structures 27 are provided at the bottom of the inverter cabinet 21. The two groups of heat dissipation structures 27 are installed above the two groups of heat dissipation air ducts of the inverter cabinet 21 at intervals and are located below the inverter circuit board 22. The two groups of heat dissipation structures 27 can use heat dissipation fans, and the two groups of heat dissipation structures 27 are used to directly cool the inverter circuit board 22, so as to ensure the heat dissipation effect of the inverter 2, avoid the circuit components inside the inverter 2 from affecting the electrical components inside the inverter 2 due to high temperature, and avoid affecting the performance of the inverter 2.

[0040] The integrated device of the present invention includes a plurality of moving wheels 4, which are respectively installed at the four corners below the battery energy storage cabinet 11. In specific implementation, the plurality of moving wheels 4 can be selected as Fumar wheels, which facilitates the movement and fixation of the integrated device and improves the practicality of the integrated device. A display screen 25 and a plurality of control buttons 26 are installed in front of the inverter cabinet 21, and the plurality of control buttons 26 are distributed below the display screen 25 at intervals.

[0041] like Figure 11-Figure 12As shown, in an embodiment of the present invention, the battery module 11 of the present invention includes a fixed chamber 111, a plurality of battery cells 112, and a plurality of groups of battery cell fixing strips 113. The plurality of battery cells 112 are installed side by side in the fixed chamber 111, and the plurality of groups of battery cell fixing strips 113 are installed at intervals on the outsides of the plurality of battery cells 112 so that the plurality of battery cells 112 can be detachably installed in the fixed chamber 111. In specific implementation, the battery module 11 of the present invention is also provided with a plurality of battery cell load-bearing strips 116, and each battery cell load-bearing strip 116 is located between two adjacent upper and lower rows of battery cells 112 so as to support the upper row of battery cells 112. A fixing portion 114 is formed at both ends of each group of battery cell fixing strips 113, and a fixing hole and a fixing member matched with the fixing hole are provided on the fixing portion 114. The fixing member passes through the fixing holes on the fixing portions 114 at both ends of the battery cell fixing strips 113 to fix the two ends of each group of battery cell fixing strips 113 to the side walls of the fixing chamber 111. In a specific implementation, the fixing member can be a fixing bolt or a fixing screw. In a specific implementation of the present invention, the battery module 11 includes a connecting aluminum sheet 115, and each battery cell 112 is provided with a pair of positive terminals and negative terminals with opposite polarities. The connecting aluminum sheet 115 is located between the positive terminals and negative terminals with opposite polarities of two adjacent battery cells 112, and the two adjacent battery cells 112 are electrically connected through the connecting aluminum sheet 115. The connecting aluminum sheet 115 facilitates electrical connection of multiple battery cells 112 to ensure normal use and power demand of the battery module 11 in the battery energy storage cabinet 11. At the same time, the connecting aluminum sheet 115 also facilitates electrical connection between the battery module 11 and the first copper bus 311 of the BMS protection board 31.

[0042] When the embodiment of the present invention is specifically implemented, the battery module 11 of the present invention is further provided with a plurality of battery cell load-bearing bars 116, each of which is located between two adjacent upper and lower rows of battery cells 112, so as to support the upper row of battery cells 112. Two silicone shock-absorbing pads 117 are fixed on one side of each row of battery cells 112, and the bottom of the fixed chamber 111 is a heat sink made of aluminum material, and the silicone shock-absorbing pads 117 are located between the heat sink and each row of battery cells 112. The thickness of the silicone shock-absorbing pad 117 provided in the present invention is 1.5 mm. The functions of providing the silicone shock-absorbing pad 117 include the following two aspects: on the one hand, it can allow the plurality of battery cells 112 to better contact with the heat sink, and can absorb a certain amount of expansion deformation of the plurality of battery cells 112, thereby protecting the heat sink. Because the bottom surface of the battery cell 112 is not an absolute plane, but a spherical arc surface, by providing the silicone shock-absorbing pad 117, the expansion force of the battery cell 112 can be evenly dispersed to the entire heat sink, which can control the expansion of the heat sink to a certain extent, and on the other hand, it can increase the thermal conductivity.

[0043] like Fig.13As shown, the inverter circuit board 22 of the present invention includes a DC switch module 221, a DC filter module 222, a DC-DC conversion module 223, an inverter module 224, an AC relay 225, and an AC filter module 226. The DC switch module 221, the DC filter module 222, the DC-DC conversion module 223, the inverter module 224, the AC relay 225, and the AC filter module 226 are electrically connected in sequence. In a specific implementation, the inverter module 224 adopts an H full-bridge inverter circuit.

[0044] like Figure 14-15 As shown, the BMS protection board 31 of the present invention includes a power management module, a battery management analog front-end module, an MCU control module, a power switch module, and a communication module. The battery module 11 is electrically connected to the power management module and the battery management analog front-end module. The battery management analog front-end module, the power switch module, and the communication module are electrically connected to the MCU control module. In specific implementation, the MCU control module uses the MG32F02A128 chip, and the analog front-end module uses the AFE chip model SY68940. The SY68940 AFE chip has the functions of lithium battery pack discharge overcurrent, discharge short circuit, battery pack single cell / total voltage undervoltage and overvoltage protection, and has a built-in I 2 C interface; the power management module includes a DC-DC circuit and an LDO circuit, which are electrically connected to the battery module 11 and the MCU control module; the communication module uses TJA1040T as the CAN bus transceiver chip, and an ADUM1201BRZ bidirectional magnetic isolator is connected in series between the CAN communication interface of the MCU control module and the CAN bus transceiver chip to achieve signal isolation, and a 120Ω resistor is connected in parallel at the input end of the TJA1040T to suppress echo reflection.

[0045] The present invention can output the collected voltages of each battery module 11 to the MG32F02A128 chip of the MCU control module through the battery management analog front-end module. The MG32F02A128 chip sends signals to the battery management analog front-end module to control the charging and discharging of each battery cell 112 according to the collected voltage conditions of the multiple battery cells 112.

[0046] The above description has been a detailed description of the present invention. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present application. That is, all equivalent changes and modifications made within the scope of the present application should still fall within the scope of the present invention.

Claims

1. An integrated device with battery energy storage and inverter functions, characterized in that: The integrated device includes a battery energy storage cabinet and an inverter. The inverter is installed above the battery energy storage cabinet to form an integrated structure. A bridge cabinet is provided on the top of the battery energy storage cabinet. A BMS protection board is installed in the bridge cabinet of the battery energy storage cabinet. A battery module is installed inside the battery energy storage cabinet. The BMS protection board is located above the battery module and connected thereto. The inverter includes an inverter cabinet and an inverter circuit board. The inverter circuit board is installed inside the inverter cabinet. A wiring groove is provided at the bottom of the inverter cabinet. A first copper bar and a second copper bar are installed on the BMS protection board. The second copper bar is located on one side of the first copper bar. The BMS The protection board is electrically connected to the battery module in the battery energy storage cabinet through the first copper busbar. A battery input negative busbar and a battery input positive busbar are led out from the inside of the battery energy storage cabinet. One end of the battery input positive busbar is electrically connected to the battery module, and the other end of the battery input positive busbar is electrically connected to the inverter circuit board inside the inverter cabinet through a wiring groove. One end of the battery input negative busbar is electrically connected to the second copper busbar on the BMS protection board, and the other end of the battery input negative busbar is electrically connected to the inverter circuit board inside the inverter cabinet through a wiring groove. The BMS protection board in the bridge cabinet is electrically connected to the inverter circuit board inside the inverter cabinet through the wiring groove and the battery input negative busbar.

2. The integrated device with battery energy storage and inverter functions according to claim 1 is characterized in that: The upper end of the inverter cabinet is fixed with a photovoltaic connector positive interface, a photovoltaic connector negative interface, a USB charging interface, a mains input interface, an AC output interface, and a CAN communication port in sequence from left to right.

3. The integrated device with battery energy storage and inverter functions according to claim 1, characterized in that: The battery module includes a fixed chamber, a plurality of battery cells, and a plurality of groups of battery cell fixing strips. The battery cells are installed side by side in the fixed chamber, and the plurality of groups of battery cell fixing strips are installed at intervals on the outside of the battery cells so that the battery cells can be detachably installed in the fixed chamber.

4. The integrated device with battery energy storage and inverter functions according to claim 1, characterized in that: The inverter circuit board includes a DC switch module, a DC filter module, a DC-DC conversion module, an inverter module, an AC relay, and an AC filter module. The DC switch module, the DC filter module, the DC-DC conversion module, the inverter module, the AC relay, and the AC filter module are electrically connected in sequence.

5. The integrated device with battery energy storage and inverter functions according to claim 1, characterized in that: The BMS protection board includes a power management module, a battery management analog front-end module, an MCU control module, a power switch module, and a communication module. The battery module is electrically connected to the power management module and the battery management analog front-end module. The battery management analog front-end module, the power switch module, and the communication module are electrically connected to the MCU control module.

6. The integrated device with battery energy storage and inverter functions according to claim 3 is characterized in that: The battery module includes a connecting aluminum sheet. Each battery cell is provided with a pair of positive terminals and negative terminals with opposite polarities. The connecting aluminum sheet is located between the positive terminals and negative terminals with opposite polarities of two adjacent battery cells. The two adjacent battery cells are electrically connected via the connecting aluminum sheet.

7. The integrated device with battery energy storage and inverter functions according to claim 1, characterized in that: The inverter includes two groups of heat dissipation structures. The bottom of the inverter cabinet is provided with two groups of heat dissipation ducts matching the two groups of heat dissipation structures. The two groups of heat dissipation structures are installed above the two groups of heat dissipation ducts of the inverter cabinet and below the inverter circuit board.

8. The integrated device with battery energy storage and inverter functions according to claim 2, characterized in that: A protective cover is hinged at the upper end of the inverter cabinet, and the protective cover covers the periphery of the photovoltaic connector positive electrode interface, the photovoltaic connector negative electrode interface, the USB charging interface, the mains input interface, the AC output interface, and the CAN communication port.

9. The integrated device with battery energy storage and inverter functions according to claim 1, characterized in that: The integrated device includes a plurality of moving wheels, and the plurality of moving wheels are respectively installed at four corners below the battery energy storage cabinet.

10. The integrated device with battery energy storage and inverter functions according to claim 1, characterized in that: A display screen and a plurality of control buttons are installed in front of the inverter cabinet, and the plurality of control buttons are distributed below the display screen at intervals.

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