Box front part structure of micro-grid battery energy storage integrated device

Abstract

The utility model discloses a box front portion structure of a micro-grid battery energy storage integrated device. The box front portion structure comprises a PCS, a BMS, an FMS, a PMS and an EMS. Electronic and microelectronic components of the PCS, the BMS, the FMS, the PMS and the EMS are installed in a PCS (C) metal box, a BMS metal box, an FMS metal box, a PMS metal box and an EMS metal box respectively. PCS (C), BMS, FMS, PMS and EMS metal boxes are assembled and disassembled on the front panel in a pluggable mode. The front part of the box is provided with a connection bus circuit board which enables the PCS (C), BMS, FMS, PMS and EMS metal boxes to be mutually connected and to be connected with external equipment, and the rear part of each metal box is provided with a connector and an anti-interference magnetic ring which are connected with the connection bus circuit board. According to the utility model, the reliable operation problems of heating, electromagnetic compatibility and the like in the prior art can be effectively solved, the operation maintenance is simple and convenient, and the panel layout is concise.

Description

Technical Field

[0001] The utility model relates to a front part structure of a cabinet of a microgrid battery energy storage integrated device. Background Art

[0002] The main function of a battery energy storage device is to use a battery as the main body to store electric energy when the grid electric energy is abundant or surplus and release electric energy when the grid electric energy is in short supply, that is, to cut peaks and fill valleys of the grid electric energy. It is widely used in wind energy, solar power plants and power consumption scenarios with large differences between peaks and valleys of power consumption, and is a new energy industry that is an important part of a new power system.

[0003] A microgrid battery energy storage device generally adopts a cabinet form, with a power of hundreds of kilowatts and a stored electric energy of hundreds of kilowatt-hours (degrees). It belongs to a medium and small-sized energy storage device and is suitable for power adjustment of industrial and commercial power users and public distribution areas.

[0004] In addition to the battery modules for storing electric energy in the cabinet of the microgrid battery energy storage device, there are also PCS devices of a bidirectional conversion system that converts grid AC electric energy into DC electric energy and battery DC electric energy into AC electric energy, BMS devices for managing the safe and economic operation of energy storage batteries, FMS devices for managing the reliable operation of the fire protection system inside the energy storage battery module and in the cabinet, PMS devices for managing the safe and reliable operation of the AC power distribution power supply and DC working power supply of the device, and EMS devices for managing the safe and economic operation of the charging and discharging electric energy of energy storage batteries, the stored and generated electric energy of the device, and the power supply and transmission electric energy of power distribution, as well as an AC box with an AC primary circuit and a DC box with a DC primary circuit, etc.

[0005] There are three difficulties in the integration of PCS, BMS, FMS, PMS, EMS and AC box, DC box in the existing microgrid battery energy storage device. One is to consider reliable operation problems such as heat generation and electromagnetic compatibility, the second is to consider the simplicity of operation and maintenance, and the third is that the panel layout has a lot of content and is messy, and there are easy errors in human-machine connection.

[0006] PCS, BMS, FMS, PMS, EMS (also known as 5S) and AC box, DC box in the existing microgrid battery energy storage device are all independent or partially combined. If the PCS, BMS, FMS, PMS, EMS and AC box, DC box of the microgrid battery energy storage can be integrated into one body to form a 5S+ integrated device, it will greatly simplify the microgrid battery energy storage device, improve its operation reliability, reduce its operation and maintenance difficulty, and reduce its manufacturing cost and operation and maintenance cost. Summary of the Invention

[0007] The purpose of the present utility model is to provide a front structure of a microgrid battery energy storage integrated device that effectively solves the reliable operation problems such as heat generation and electromagnetic compatibility existing in the prior art, and is simple in operation and maintenance and has a simple panel layout.

[0008] The technical solution of the present utility model is as follows:

[0009] A front structure of a microgrid battery energy storage integrated device, characterized in that it includes:

[0010] (1) The electronic and microelectronic components of PCS, BMS, FMS, PMS, and EMS are respectively installed in the metal boxes of PCS (C) (i.e., the controller part in PCS), BMS, FMS, PMS, and EMS;

[0011] (2) The microgrid battery energy storage integrated device adopts a horizontal box type, and the metal boxes of PCS (C), BMS, FMS, PMS, and EMS are loaded and unloaded in a plug-and-play manner on its front panel;

[0012] (3) A connection bus circuit board for connecting the metal boxes of PCS (C), BMS, FMS, PMS, and EMS to each other and to external devices is provided at the front part of the horizontal box, and connectors and anti-interference magnetic rings connected to the connection bus circuit board are arranged at the rear of each metal box;

[0013] (4) According to the logical relationship of the microgrid battery energy storage integrated device that converts alternating current to direct current and direct current to alternating current, the alternating current box, the converter box, and the direct current box are arranged such that the alternating current box and the direct current box are respectively located on both sides of the converter box; and according to the relevant connectivity of the metal boxes of PCS (C), BMS, FMS, PMS, and EMS with the alternating current box, the converter box, and the direct current box and the space conditions inside the alternating current box, the converter box, and the direct current box, the PCS (C) metal box is placed flat at the lower part of the converter box, the PMS and EMS metal boxes are respectively placed on the left and right sides of the alternating current box, and the BMS and FMS metal boxes are respectively placed on the right and left sides of the direct current box.

[0014] The front structure of the microgrid battery energy storage integrated device includes a rectangular basin-shaped device front panel, a PCS (C) metal box containing PCS controller electronics and microelectronics components, a BMS metal box containing BMS electronics and microelectronics components, an EMS metal box containing EMS electronics and microelectronics components, an FMS metal box containing FMS electronics and microelectronics components, a PMS metal box containing PMS electronics and microelectronics components, an AC circuit breaker, an AC circuit breaker handle, an AC circuit breaker handle connecting rod, a DC circuit breaker, a DC circuit breaker handle, and a DC circuit breaker handle connecting rod; the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box are all flat, with a metal box front panel at the front and a metal box rear panel connector at the rear. There are metal box mounting holes on the device front panel for inserting and installing the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box. The metal box rear panel connector ends of the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box can be inserted through the metal box mounting holes, making the metal box front panel stick to the device front panel, achieving the integration of the front panels of the PCS (C), BMS, EMS, FMS, and PMS metal boxes with the device front panel; the front panel of the PCS (C) metal box is located in the middle at the bottom of the device front panel; the upper part of the device front panel, from right to left or from left to right, is successively the EMS metal box, the AC circuit breaker handle, the PMS metal box, the BMS metal box, the DC circuit breaker handle, and the FMS metal box; the PCS (C) metal box is installed flat, and the BMS metal box, EMS metal box, FMS metal box, and PMS metal box are installed sideways; the AC circuit breaker handle is connected to a circuit breaker handle connecting rod, and the circuit breaker handle connecting rod is connected to the AC circuit breaker; the DC circuit breaker handle is connected to a DC circuit breaker handle connecting rod, and the DC circuit breaker handle connecting rod is connected to the DC circuit breaker; the distance between the longitudinal centerlines of the PMS metal box and the BMS metal box is not less than 40% of the width of the device front panel, and the distances between the longitudinal centerlines of the EMS metal box and the PMS metal box and between the longitudinal centerlines of the BMS metal box and the FMS metal box are respectively 15 - 25% of the width of the device front panel; the EMS metal box and the FMS metal box are respectively close to the right and left sides of the device front panel.

[0015] On each side of the front panels of the PCS (C), BMS, EMS, FMS, and PMS metal boxes, there is a metal box fixing hole. There is a metal box fixing bolt in the metal box fixing hole, and there is a metal box fixing nut on the inner side of the device front panel corresponding to the metal box fixing bolt. The metal box fixing nut is fixed on the inner side of the device front panel, and there is a bolt retaining ring on the metal box fixing bolt; on the front panels of the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box, there are status indicator lights and debugging interfaces.

[0016] There is a connection bus circuit board at the inner bottom of the front panel of the device. The connection bus circuit board spans across the PCS (C) metal box. There are external wiring terminals on the outer sides of the left and right ends of the connection bus circuit board, and internal connection connectors on the inner side. There are metal mounting shells outside the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box for mounting the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box. There are guiding pieces at the front end of the metal mounting shell to facilitate the insertion of the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box into the metal mounting shell. There is a rear plate of the mounting shell at the rear end of the metal mounting shell. The rear plate of the mounting shell has a socket on the rear plate of the mounting shell corresponding to the plug on the rear plate of the metal box. There is an anti-interference magnetic ring behind the socket on the rear plate of the mounting shell. The PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box are connected to the internal connection connectors of the connection bus circuit board through cables passing through the anti-interference magnetic ring via the plugs on the rear plates and the sockets on the rear plate of the mounting shell, realizing anti-interference interconnection between the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box, and being interconnected with external devices through the external wiring terminals of the connection bus circuit board.

[0017] There are protective shells on the external wiring terminals at both ends of the connection bus circuit board. There is a cover plate on the protective shell of the external wiring terminal, which is opened and covered during the operation of connecting or disconnecting the external wiring. A miniature circuit breaker is installed near the handle of the AC circuit breaker on the front panel of the device.

[0018] The front panel is divided into regions and corresponding function markings are made according to the operation logic of the device, and the external wiring terminals are provided with protective shells and hidden.

[0019] The utility model integrates PCS, BMS, FMS, PMS, EMS of the microgrid battery energy storage and AC boxes and DC boxes into one body, forming a 5S+ integrated device, which greatly simplifies the microgrid battery energy storage equipment, improves the operation reliability, reduces the operation and maintenance difficulty, and reduces its manufacturing cost and operation and maintenance cost. The utility model effectively solves the reliable operation problems such as heating and electromagnetic compatibility existing in the prior art, and has simple operation and maintenance, concise panel layout, and is not prone to errors in the man-machine connection. Description of the Drawings

[0020] The following further describes the utility model in conjunction with the drawings and embodiments.

[0021] Figure 1 is a schematic structural diagram of an embodiment of the utility model.

[0022] Figure 2 is Figure 1View A-A.

[0023] Figure 3 is Figure 1 View B-B.

[0024] Reference numerals:

[0025] 1—Front panel of the device

[0026] 2—PCS (C) metal box

[0027] 3—BMS metal box

[0028] 4—EMS metal box

[0029] 5—FMS metal box

[0030] 6—PMS metal box

[0031] 7—AC circuit breaker

[0032] 8—AC circuit breaker handle

[0033] 9—AC circuit breaker handle connecting rod

[0034] 10—DC circuit breaker

[0035] 11—DC circuit breaker handle

[0036] 12—DC circuit breaker handle connecting rod

[0037] 13—Front panel of the metal box

[0038] 14—Rear panel connection plug of the metal box

[0039] 15—Mounting hole of the metal box

[0040] 16—Fixing hole of the metal box

[0041] 17—Fixing bolt of the metal box

[0042] 18—Fixing nut of the metal box

[0043] 19—Bolt snap ring

[0044] 20—Status indicator lamp

[0045] 21—Debugging interface

[0046] 22—Connecting bus circuit board

[0047] 24—External wiring terminal

[0048] 25—Internal connection connector

[0049] 26—Metal mounting shell

[0050] 27 - Guide plate

[0051] 28 - Rear panel of the installation shell

[0052] 29 - Socket on the rear panel of the installation shell

[0053] 30 - Anti-interference magnetic ring

[0054] 31 - Protective shell for external wiring terminals

[0055] 32 - Cover plate of the protective shell for external wiring terminals

[0056] 33 - Miniature circuit breaker

[0057] 34 - Function difference markings for PCS (C), BMS, EMS, FMS, and PMS

[0058] 35 - Function markings for the AC box

[0059] 36 - Function markings for the DC box

[0060] 37 - Function markings for the converter box

[0061] 38 - Device name markings

[0062] 39 - Production enterprise name markings

[0063] 40 - Ventilation holes (windows) Detailed implementation method

[0064] The front structure of a microgrid battery energy storage integrated device includes:

[0065] (1) Install the electronic and microelectronic components in PCS, BMS, FMS, PMS, and EMS into the PCS (C), BMS, FMS, PMS, and EMS metal boxes that are easy to repair, replace, and have good electromagnetic compatibility; the electronic and microelectronic components in PCS, BMS, FMS, PMS, and EMS refer to electronic (microelectronic) components that are more than 95% low voltage (micro voltage), small current (micro current), and sensitive to temperature and electromagnetic interference; the remaining larger components are installed outside the metal box and are connected to the circuit inside the metal box.

[0066] (2) The microgrid battery energy storage integrated device adopts a horizontal box type, and the PCS (C), BMS, FMS, PMS, and EMS metal boxes are installed and removed in a plug-and-play manner on its front panel (because the temperature at the front is lower and it is convenient for operation and maintenance);

[0067] (3) A connection bus circuit board for connecting the PCS (C), BMS, FMS, PMS, and EMS metal boxes to each other and to external devices is provided at the front of the horizontal box (which can simplify the connection wires and connection points, improve electromagnetic compatibility, and facilitate production assembly and operation maintenance). At the rear of each metal box, connectors and anti-interference magnetic rings connected to the connection bus circuit board are configured (which facilitates production debugging, operation maintenance, and improves electromagnetic compatibility);

[0068] (4) According to the logical relationship of the AC-to-DC conversion and DC-to-AC conversion of the microgrid battery energy storage integrated device, the AC box, converter box, and DC box containing the AC, converter, and DC primary large components and parts are arranged such that the AC box and DC box are located on both sides of the converter box respectively (which can reduce the primary connection wires and connection points); Also, according to the relevant connectivity between the PCS (C), BMS, FMS, PMS, and EMS metal boxes and the AC box, converter box, and DC box, and the space conditions inside the AC box, converter box, and DC box, the PCS (C) metal box is placed flat at the lower part of the converter box, the PMS and EMS metal boxes are placed on the right and left sides of the AC box respectively, and the BMS and FMS metal boxes are placed on the left and right sides of the DC box respectively (which can reduce the number of secondary connection wires and connection points, and reduce the temperature influence and electromagnetic interference influence on the primary circuit).

[0069] The front panel is divided into areas and corresponding function labels are made according to the device operation logic, and the external wiring terminals are provided with protective covers and hidden, making the panel simple and orderly, and improving the error-free nature of the human-machine interaction.

[0070] The front structure of the microgrid battery energy storage integrated device includes a rectangular basin-shaped device front panel 1, a PCS (C) metal box 2 containing PCS controller electronic and microelectronic components, a BMS metal box 3 containing BMS electronic and microelectronic components, an EMS metal box 4 containing EMS electronic and microelectronic components, an FMS metal box 5 containing FMS electronic and microelectronic components, a PMS metal box 6 containing PMS electronic and microelectronic components, an AC circuit breaker 7, an AC circuit breaker handle 8, an AC circuit breaker handle connecting rod 9, a DC circuit breaker 10, a DC circuit breaker handle 11, and a DC circuit breaker handle connecting rod 12; the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 are all flat, with a metal box front panel 13 at the front and a metal box rear panel connector 14 at the rear. There are metal box mounting holes 15 on the device front panel 1 for inserting and installing the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6. The end of the metal box rear panel connector 14 of the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 can be inserted through the metal box mounting holes 15 to make the metal box front panel 13 stick to the device front panel 1, realizing the integration of the front panels 13 of the PCS (C), BMS, EMS, FMS, and PMS metal boxes with the device front panel 1; the front panel 13 of the PCS (C) metal box is located in the middle at the bottom of the device front panel 1; the upper part of the device front panel 1, from right to left or from left to right, is successively the EMS metal box 4, the AC circuit breaker handle 8, the PMS metal box 6, the BMS metal box 3, the DC circuit breaker handle 11, and the FMS metal box 5; the PCS (C) metal box 2 is installed flat, and the BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 are installed sideways; the AC circuit breaker handle 8 is connected to the circuit breaker handle connecting rod 9, and the circuit breaker handle connecting rod 9 is connected to the AC circuit breaker 7; the DC circuit breaker handle 11 is connected to the DC circuit breaker handle connecting rod 12, and the DC circuit breaker handle connecting rod 12 is connected to the DC circuit breaker 10; the distance between the longitudinal centerlines of the PMS metal box 6 and the BMS metal box 3 is not less than 40% of the width of the device front panel 1, facilitating the installation of the primary circuit breaker and components of the PCS (C). The distances between the longitudinal centerlines of the EMS metal box 4 and the PMS metal box 6 and between the longitudinal centerlines of the BMS metal box 3 and the FMS metal box 5 are about 20% of the width of the device front panel 1 (for example, 15 - 25%); the EMS metal box 4 and the FMS metal box 5 are respectively close to the right and left sides of the device front panel 1 (enough space can be left to install the primary circuit breaker and components in the AC box and DC box respectively).

[0071] On both sides of the front panel 13 of the PCS (C), BMS, EMS, FMS, and PMS metal boxes, there is one metal box fixing hole 16 each. In the metal box fixing hole 16, there is a metal box fixing bolt 17. Inside the inner side of the device front panel 1, corresponding to the metal box fixing bolt 17, there is a metal box fixing nut 18. The metal box fixing nut 18 is fixed on the inner side of the device front panel 1, and there is a bolt snap ring 19 on the metal box fixing bolt 17. When installing and fixing the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6, use a screwdriver to tighten the metal box fixing bolt 17 and the metal box fixing nut 18. When removing the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6, use a screwdriver to withdraw the metal box fixing bolt 17 from the metal box fixing nut 18, and then remove it. On the front panel 13 of the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6, there are status indicator lights 20 and debugging interfaces 21. The status indicator lights 20 are used to indicate the operating conditions such as operation, alarm, and fault of the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6. The debugging interfaces 21 are used for debugging, retrieving more operating condition information, software modification, upgrade, etc.

[0072] At the inner bottom of the device front panel 1, there is a connection bus circuit board 22, and the connection bus circuit board 22 spans across the PCS (C) metal box 2. On the outer sides of the left and right ends of the connection bus circuit board 22, there are external wiring terminals 24, and on the inner side, there are internal connection connectors 25. Outside the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6, there is a metal mounting shell 26 for installing the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6. At the front end of the metal mounting shell 26, there is a guiding piece 27 to facilitate the insertion of the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 into the metal mounting shell. At the rear end of the metal mounting shell 26, there is a mounting shell rear plate 28. The mounting shell rear plate 28 has a mounting shell rear socket 29 corresponding to the rear plate connector plug 14 of the metal box. Behind the mounting shell rear socket 29, there is an anti-interference magnetic ring 30. The PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 are connected to the internal connection connectors 25 of the connection bus circuit board through cables passing through the anti-interference magnetic ring 30 via the rear plate connector plug 14 and the mounting shell rear socket 29, achieving anti-interference interconnection between the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6, and are interconnected with external devices through the external wiring terminals 24 of the connection bus circuit board.

[0073] There is an external wiring terminal housing 31 on the external wiring terminal 24 connecting the two ends of the connection bus circuit board 22. There is an external wiring terminal housing cover plate 32 on the external wiring terminal housing 31, which is opened and closed during the external wiring connection or disconnection operation; A miniature circuit breaker 33 is installed near the AC circuit breaker handle 8 on the front panel 1 of the device, which is used for the connection, isolation and protection of some specific components.

[0074] There are obvious function difference markings 34 for the bidirectional power conversion system (controller part), battery management system, power energy management system, fire management system, and power supply management system of PCS (C), BMS, EMS, FMS, and PMS on the front panels of the PCS (C), BMS, EMS, FMS, and PMS metal boxes respectively; There is an AC box function marking 35 above the AC circuit breaker handle 8 on the front panel 1 of the device, and a DC box function marking 36 above the DC circuit breaker handle 11. There is a converter box function marking 37 corresponding to the upper part of the PCS (C), which respectively indicate that the rear parts of the boxes of the microgrid battery energy storage integrated device are AC, DC, and converter primary circuits; The uppermost part of the front panel 1 of the device is the device name marking 38, and the upper end of the PCS (C) is the device manufacturer name marking 39; There are ventilation holes (windows) 40 in the central part of the front panel 1 of the device and around the AC circuit breaker handle 8 and the DC circuit breaker handle 11, which are used for ventilation and cooling inside the device.

Claims

1. A box front structure of a microgrid battery energy storage integrated device, characterized by comprising: (1) The electronic and microelectronic components in PCS, BMS, FMS, PMS and EMS are installed in the metal boxes of PCS (C), BMS, FMS, PMS and EMS respectively; (2) The microgrid battery energy storage integrated device adopts a horizontal box type, and the PCS (C), BMS, FMS, PMS, and EMS metal boxes are plug-in and unplug-in on its front panel; (3) The front of the horizontal box is provided with a connection bus circuit board for connecting the PCS (C), BMS, FMS, PMS, and EMS metal boxes to each other and to external devices, and a connector and an anti-interference magnetic ring connected to the connection bus circuit board are provided at the rear of each metal box; (4) The AC box, converter box, and DC box are set according to the logical relationship of the AC to DC conversion and the DC to AC conversion of the microgrid battery energy storage integrated device. The AC box and DC box are located on both sides of the converter box respectively; the PCS (C), BMS, FMS, PMS, and EMS metal boxes, AC box, converter box, and DC box are set according to the relevant connectivity between the PCS (C), BMS, FMS, PMS, and EMS metal boxes and the AC box, converter box, and DC box and the space conditions inside the AC box, converter box, and DC box. The PCS (C) metal box is placed flat on the lower part of the converter box, the PMS and EMS metal boxes are placed on the left and right sides of the AC box respectively, and the BMS and FMS metal boxes are placed on the right and left sides of the DC box respectively; (5) The front panel is divided into areas and marked with corresponding functions according to the operating logic of the device, and the external wiring terminals are protected and concealed.

2. The front structure of a microgrid battery energy storage integrated device according to claim 1, characterized in that: The device comprises a rectangular basin-shaped front panel (1), a PCS (C) metal box (2) containing PCS controller electronics and microelectronic components, a BMS metal box (3) containing BMS electronics and microelectronic components, an EMS metal box (4) containing EMS electronics and microelectronic components, an FMS metal box (5) containing FMS electronics and microelectronic components, a PMS metal box (6) containing PMS electronics and microelectronic components, an AC circuit breaker (7), an AC circuit breaker handle (8), an AC circuit breaker handle connecting rod (9), a DC circuit breaker (10), a DC circuit breaker handle ( 11), 1 DC circuit breaker handle connecting rod (12); PCS (C) metal box (2), BMS metal box (3), EMS metal box (4), FMS metal box (5), PMS metal box (6) are all flat, with a metal box front panel (13) in front and a metal box rear panel connector (14) in the back. The front panel (1) of the device has metal box mounting holes (15) for inserting and installing the PCS (C) metal box (2), BMS metal box (3), EMS metal box (4), FMS metal box (5), PMS metal box (6). The metal box rear panel connector (14) of the FMS metal box (5) and the PMS metal box (6) can be inserted from the metal box mounting hole (15), so that the metal box front panel (13) is attached to the device front panel (1), thereby realizing the integration of the PCS (C), BMS, EMS, FMS, PMS metal box front panels (13) and the device front panel (1); the PCS (C) metal box front panel (13) is located in the middle of the bottom of the device front panel (1); the upper part of the device front panel (1) is sequentially provided with the EMS metal box (4), AC circuit breaker handle (8), PMS metal box (6), BMS metal box (3), DC circuit breaker handle (8), and the like from right to left or from left to right. The handle (11) and the FMS metal box (5) of the PCS (C) metal box (2) are mounted flat, and the BMS metal box (3), the EMS metal box (4), the FMS metal box (5), and the PMS metal box (6) are mounted on the side. The AC circuit breaker handle (8) is connected to the circuit breaker handle connecting rod (9), and the circuit breaker handle connecting rod (9) is connected to the AC circuit breaker (7). The DC circuit breaker handle (11) is connected to the DC circuit breaker handle connecting rod (12), and the DC circuit breaker handle connecting rod (12) is connected to the DC circuit breaker (10). The spacing between the longitudinal center lines of the PMS metal box (6) and the BMS metal box (3) is not less than 40% of the width of the front panel (1) of the device. The distances between the longitudinal center lines of the EMS metal box (4) and the PMS metal box (6) and the longitudinal center lines of the BMS metal box (3) and the FMS metal box (5) are 15-25% of the width of the device front panel (1); the EMS metal box (4) and the FMS metal box (5) are respectively close to the right and left sides of the device front panel (1).

3. The front structure of the microgrid battery energy storage integrated device according to claim 2, characterized in that: There is a metal box fixing hole (16) on each side of the front panel (13) of the PCS (C), BMS, EMS, FMS, and PMS metal box. There is a metal box fixing bolt (17) in the metal box fixing hole (16). There is a metal box fixing nut (18) corresponding to the metal box fixing bolt (17) on the inner side of the device front panel (1). The metal box fixing nut (18) is fixed to the inner side of the device front panel (1). There is a bolt retaining spring (19) on the metal box fixing bolt (17). The metal box front panel (13) of the PCS (C) metal box (2), BMS metal box (3), EMS metal box (4), FMS metal box (5), and PMS metal box (6) has a status indicator light (20) and a debugging interface (21).

4. The front structure of the microgrid battery energy storage integrated device according to claim 2, characterized in that: A bus connection circuit board (22) is provided at the bottom inner side of the front panel (1) of the device. The bus connection circuit board (22) spans the PCS (C) metal box (2). External connection terminals (24) are provided on the outer sides of the left and right ends of the bus connection circuit board (22). Internal connection connectors (25) are provided on the inner side. A metal mounting shell (26) is provided on the outer sides of the PCS (C) metal box (2), the BMS metal box (3), the EMS metal box (4), the FMS metal box (5), and the PMS metal box (6). The metal mounting shell (26) is used to mount the PCS (C) metal box (2), the BMS metal box (3), the EMS metal box (4), the FMS metal box (5), and the PMS metal box (6). A guide piece (27) is provided at the front end of the metal mounting shell to facilitate the insertion of the PCS (C) metal box (2), the BMS metal box (3), the EMS metal box (4), the FMS metal box (5), and the PMS metal box (6) into the metal mounting shell. The rear end of the mounting shell (26) is provided with a mounting shell rear plate (28), the mounting shell rear plate (28) is provided with a mounting shell rear plate connection socket (29) corresponding to the metal box rear plate connection plug (14), and an anti-interference magnetic ring (30) is provided behind the mounting shell rear plate connection socket (29); the electronic and microelectronic components in the PCS (C) metal box (2), the BMS metal box (3), the EMS metal box (4), the FMS metal box (5), and the PMS metal box (6) are connected to the connecting connector (25) in the bus circuit board through the metal box rear plate connection plug (14) and the mounting shell rear plate connection socket (29), thereby realizing anti-interference mutual connection between the PCS (C) metal box (2), the BMS metal box (3), the EMS metal box (4), the FMS metal box (5), and the PMS metal box (6), and are connected to the external device through the external connection terminal (24) of the bus circuit board.

5. The box front structure of a microgrid battery energy storage integrated device according to claim 4 is characterized by: An external terminal shield (31) is provided on the external terminal (24) connected to the two ends of the bus circuit board (22), and an external terminal shield cover (32) is provided on the external terminal shield (31), which is opened and closed when performing external wiring connection or removal operations; a miniature circuit breaker (33) is installed near the AC circuit breaker handle (8) on the front panel (1) of the device.

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