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

Abstract

The invention discloses a box front part structure of a micro-grid battery energy storage integrated device. The box front part structure comprises a PCS, a BMS, an FMS, a PMS and an EMS, wherein electronic and microelectronic components of the PCS, the BMS, the FMS, the PMS and the EMS are respectively mounted in a PCS (C) metal box, a BMS metal box, an FMS metal box, a PMS metal box and an EMS metal box; 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 invention, the reliable operation problems of heating, electromagnetic compatibility and the like in the prior art can be effectively solved, the operation and maintenance are simple and convenient, and the panel layout is concise.

Description

Technical Field

[0001] The invention relates to a box front structure of a microgrid battery energy storage integrated device. Background Art

[0002] The main function of battery energy storage equipment is to use batteries as the main body to store electricity when the grid has abundant or surplus electricity and to release electricity when the grid is short of electricity, that is, to smooth the peaks and fill the valleys of the grid electricity. It is widely used in wind power, solar power stations and electricity consumption scenarios with large peak and valley differences. It is a new energy industry that is an important part of the new power system.

[0003] Microgrid battery energy storage equipment generally takes the form of a cabinet with a power of hundreds of kilowatts and stored electricity of hundreds of kilowatt-hours (degrees). It is a small and medium-sized energy storage device suitable for power regulation of industrial and commercial power users and public distribution stations.

[0004] In addition to battery modules for storing electrical energy, the cabinet of microgrid battery energy storage equipment also has a PCS device for a bidirectional conversion system that converts the AC power of the grid into DC power and the DC power of the battery into AC power, a BMS device for a safe and economical operation management system for the energy storage battery, an FMS device for a reliable fire protection operation management system in the energy storage battery module and the cabinet, a PMS device for a safe and reliable operation management system for the AC distribution power supply and DC working power supply of the equipment, and an EMS device for a safe and economical operation management system for the charging and discharging of energy storage batteries, the storage and generation of equipment electricity, and the distribution and supply of electricity, as well as an AC box with an AC primary circuit and a DC box with a DC primary circuit.

[0005] There are three difficulties in the integration of PCS, BMS, FMS, PMS, EMS and AC box and DC box in the microgrid battery energy storage equipment of the existing technology. First, it is necessary to consider reliable operation issues such as heat generation and electromagnetic compatibility. Second, it is necessary to consider the ease of operation and maintenance. Third, the panel layout will be complicated and messy, and human-computer communication is prone to errors.

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

[0007] The object of the present invention is to provide a box front structure of a microgrid battery energy storage integrated device which effectively solves the reliable operation problems such as heating and electromagnetic compatibility existing in the prior art, and has simple operation and maintenance and a simple panel layout.

[0008] The technical solution of the present invention is: A box front structure of a microgrid battery energy storage integrated device, characterized by comprising: (1) The electronic and microelectronic components of PCS, BMS, FMS, PMS and EMS are installed in the metal boxes of PCS (C) (i.e. the controller part of PCS), 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) A connection bus circuit board is arranged at the front of the horizontal box to connect 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 arranged at the rear of each metal box; (4) According to the logical relationship between the AC to DC conversion and the DC to AC conversion of the microgrid battery energy storage integrated device, the AC box, converter box and DC box are arranged so that the AC box and the DC box are located on the two sides of the converter box respectively; and according to the relevant connectivity between the PCS (C), BMS, FMS, PMS, 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.

[0009] The front structure of the microgrid battery energy storage integrated device includes a rectangular basin-shaped device front panel, a PCS (C) metal box equipped with PCS controller electronics and microelectronic components, a BMS metal box equipped with BMS electronics and microelectronic components, an EMS metal box equipped with EMS electronics and microelectronic components, an FMS metal box equipped with FMS electronics and microelectronic components, a PMS metal box equipped with PMS electronics and microelectronic components, an AC circuit breaker, and an AC circuit breaker. handle, 1 AC circuit breaker handle connecting rod, 1 DC circuit breaker, 1 DC circuit breaker handle, 1 DC circuit breaker handle connecting rod; PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, PMS metal box are all flat, with a metal box front panel in front and a metal box rear panel plug in the back. The front panel of the device has metal box mounting holes for PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, PMS metal box to be inserted and installed. PCS (C) metal box The metal box back panel connector end of the metal box of the metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box can be inserted from the metal box mounting hole, so that the metal box front panel is attached to the device front panel, realizing the integration of the PCS (C), BMS, EMS, FMS, and PMS metal box front panels with the device front panels; the PCS (C) metal box front panel is located in the middle of the bottom of the device front panel; the upper part of the device front panel is EMS metal box, AC circuit breaker handle, PMS metal box, etc. from right to left or from left to right. Box, BMS metal box, DC circuit breaker handle, FMS metal box; PCS (C) metal box is flat-mounted, BMS metal box, EMS metal box, FMS metal box, PMS metal box is side-mounted; the AC circuit breaker handle is connected with 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 with a DC circuit breaker handle connecting rod, and the DC circuit breaker handle connecting rod is connected to the DC circuit breaker; the spacing between the longitudinal center lines of the PMS metal box and the BMS metal box shall not be less than 40% of the width of the front panel of the device, and the spacing between the longitudinal center lines of the EMS metal box and the PMS metal box and the longitudinal center lines of the BMS metal box and the FMS metal box shall be 15-25% of the width of the front panel of the device respectively; the EMS metal box and the FMS metal box are close to the right and left sides of the front panel of the device respectively.

[0010] There is a metal box fixing hole on each side of the front panel of the PCS (C), BMS, EMS, FMS, and PMS metal box. There are metal box fixing bolts in the metal box fixing holes. There are metal box fixing nuts on the inner side of the device front panel corresponding to the metal box fixing bolts. The metal box fixing nuts are fixed on the inner side of the device front panel, and there are bolt retaining springs on the metal box fixing bolts. There are status indicator lights and debugging interfaces on the metal box front panels of the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box.

[0011] There is a bus connection circuit board at the bottom of the inner side of the front panel of the device, and the bus connection circuit board spans the PCS (C) metal box; the left and right ends of the bus connection circuit board have external connection terminals on the outside and internal connection connectors on the inside. The PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box have metal installation shells on the outside for installing the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box. There are guide pieces at the front end of the metal installation 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 installation shell; There is an installation shell rear plate at the rear end of the installation shell, and the installation shell rear plate has an installation shell rear plate socket corresponding to the metal box rear plate connecting plug, and there is an anti-interference magnetic ring behind the installation shell rear plate connecting socket; the electronic and microelectronic components in the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box are connected to the connecting connector in the bus circuit board through the rear plate connecting plug and the installation shell rear plate connecting socket having a cable passing through the anti-interference magnetic ring, so as to realize the anti-interference mutual connection between the PCS (C) metal box, BMS metal box, EMS metal box, FMS metal box, and PMS metal box, and are connected to each other with external devices through the external wiring terminals of the bus circuit board.

[0012] There is an external terminal housing on the external terminal connecting the two ends of the bus circuit board, and there is an external terminal housing cover plate on the external terminal housing, which is opened and covered when the external wiring is connected or removed; a miniature circuit breaker is installed near the AC circuit breaker handle on the front panel of the device.

[0013] The front panel is divided into areas and marked with corresponding functions according to the device operation logic, and the external wiring terminals are protected and concealed.

[0014] The front panels of the metal boxes of PCS (C), BMS, EMS, FMS and PMS have obvious functional distinctions of the bidirectional converter (controller part), battery management system, power management system, fire management system and power management system of PCS (C), BMS, EMS, FMS and PMS respectively; there is an AC box function label above the AC circuit breaker handle on the front panel of the device, and a DC box function label above the DC circuit breaker handle, and there is a converter box function label on the corresponding upper part of PCS (C), indicating that the rear part of the box of the microgrid battery energy storage integrated device is AC, DC and converter primary circuit respectively; the top of the front panel of the device is the device name label, and the upper end of PCS (C) is the device manufacturer name label; there are ventilation holes (windows) in the central part of the front panel of the device and around the AC circuit breaker handle and DC circuit breaker handle for ventilation and cooling inside the device.

[0015] The present invention integrates PCS, BMS, FMS, PMS, EMS, AC box and DC box of microgrid battery energy storage into one, forming a 5S+ integrated device, which greatly simplifies the microgrid battery energy storage equipment, improves the operational reliability, reduces the difficulty of operation and maintenance, and reduces its manufacturing cost and operation and maintenance cost. The present invention effectively solves the reliable operation problems such as heating and electromagnetic compatibility existing in the prior art, and has simple operation and maintenance, simple panel layout, and human-computer communication is not prone to errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 AA view of the .

[0019] Figure 3 yes Figure 1 BB view.

[0020] Reference numerals: 1—Device front panel 2—PCS (C) metal box 3—BMS metal box 4—EMS metal box 5—FMS Metal Box 6—PMS metal box 7—AC circuit breaker 8—AC circuit breaker handle 9—AC circuit breaker handle connecting rod 10—DC circuit breaker 11—DC circuit breaker handle 12—DC circuit breaker handle connecting rod 13—Metal box front panel 14—Plug connector on the back panel of the metal box 15—Metal box mounting hole 16—Metal box fixing hole 17—Metal box fixing bolt 18—Metal box fixing nut 19—Bolt circlip 20—Status indicator light 21—Debug interface 22—Connecting the bus circuit board 24—External connection terminals 25—Internal connection connector 26—Metal mounting shell 27—Guide piece 28—Install the rear panel 29—Install the rear panel of the shell and connect it to the socket 30—Anti-interference magnetic ring 31—External terminal housing 32—External terminal housing cover 33—Miniature circuit breaker 34—Functional distinction between PCS (C), BMS, EMS, FMS, and PMS 35—AC box function indication 36—DC box function indication 37—Functional marking of converter box 38—Device name label 39—Production company name label 40—Ventilation hole (window) DETAILED DESCRIPTION

[0021] A box front structure of a microgrid battery energy storage integrated device, comprising: (1) Install the electronic and microelectronic components in PCS, BMS, FMS, PMS and EMS in metal boxes of PCS (C), BMS, FMS, PMS and EMS that are easy to repair and 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 connected to the circuit inside the metal box.

[0022] (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 (because the temperature at the front is lower and it is convenient for operation and maintenance); (3) A connection bus circuit board is arranged at the front of the horizontal box to connect the PCS (C), BMS, FMS, PMS, and EMS metal boxes to each other and to external devices (which can simplify the connection lines and connection points, improve electromagnetic compatibility and facilitate production assembly and operation and maintenance), and a connector and an anti-interference magnetic ring connected to the connection bus circuit board are arranged at the rear of each metal box (which is convenient for production debugging, operation and maintenance and improves electromagnetic compatibility); (4) According to the logical relationship between the AC to DC conversion and the DC to AC conversion of the microgrid battery energy storage integrated device, the AC box, converter box and DC box equipped with AC, converter and DC primary large devices and components are arranged so that the AC box and DC box are located on the two sides of the converter box (this can reduce the number of primary connection lines and connection points); and according to the relevant connectivity between the PCS (C), BMS, FMS, PMS, 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 right and left sides of the AC box, and the BMS and FMS metal boxes are placed on the left and right sides of the DC box (this can reduce the number of secondary connection lines and connection points, and reduce the temperature influence and electromagnetic interference influence of the primary circuit).

[0023] The front panel is divided into areas and marked with corresponding functions according to the device operation logic, and the external wiring terminals are protected and concealed, making the panel simple and orderly, and improving the error-freeness of human-machine communication.

[0024] The box 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 equipped with PCS controller electronics and microelectronic components, a BMS metal box 3 equipped with BMS electronics and microelectronic components, an EMS metal box 4 equipped with EMS electronics and microelectronic components, an FMS metal box 5 equipped with FMS electronics and microelectronic components, a PMS metal box 6 equipped with 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, 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 in front and a metal box rear panel connector 14 in the rear. The device front panel 1 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, and PMS metal box 6. 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, so that the metal box front panel 13 is attached to the device front panel 1, realizing the PCS (C) ), the fusion of the BMS, EMS, FMS, and PMS metal box front panels 13 and the device front panel 1; the PCS (C) metal box front panel 13 is located in the bottom middle of the device front panel 1; the upper part of the device front panel 1 is EMS metal box 4, AC circuit breaker handle 8, PMS metal box 6, BMS metal box 3, DC circuit breaker handle 11, and FMS metal box 5 from right to left or from left to right; PCS (C) metal box 2 is flat-mounted, and BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 are side-mounted; 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 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 device front panel 1, which is convenient for installing the primary circuit devices and components of the PCS (C); the spacing between the longitudinal center lines of the EMS metal box 4 and the PMS metal box 6 and between the longitudinal center lines of the BMS metal box 3 and the FMS metal box 5 are respectively about 20% (for example 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 (enough space can be left to install the primary circuit devices and components in the AC box and the DC box respectively).

[0025] 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 boxes, and there is a metal box fixing bolt 17 in the metal box fixing hole 16. There is a metal box fixing nut 18 on the inner side of the device front panel 1 corresponding to the metal box fixing bolt 17. The metal box fixing nut 18 is fixed to the inner side of the device front panel 1, and there is a bolt retaining spring 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, tighten the metal box fixing bolt 17 and the metal box fixing nut 18 with a screwdriver; remove the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6. When removing the S metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6, use a screwdriver to unscrew the metal box fixing bolt 17 from the metal box fixing nut 18, and then remove it; there are status indicator lights 20 and debugging interfaces 21 on the metal box front panels 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. The status indicator lights 20 are used to indicate the operation, alarm, fault and other working conditions 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 to debug and retrieve more working condition information as well as modify and upgrade the software.

[0026] A bus connection circuit board 22 is provided at the bottom of the inner side of the front panel 1 of the device, and the bus connection circuit board 22 spans the PCS (C) metal box 2; the outer sides of the left and right ends of the bus connection circuit board 22 are provided with external connection terminals 24, and the inner side is provided with internal connection connectors 25; the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6 are provided with metal mounting shells 26 on the outside for mounting the PCS (C) metal box 2, BMS metal box 3, EMS metal box 4, FMS metal box 5, and PMS metal box 6; the front end of the metal mounting shell 26 is provided with guide pieces 27) for facilitating 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 shells; There is an installation shell rear plate 28 at the rear end of the installation shell 26, and the installation shell rear plate 28 has an installation shell rear plate socket 29 corresponding to the metal box rear plate connecting plug 14, and there is an anti-interference magnetic ring 30 behind the installation shell rear plate connecting socket 29; the electronic and microelectronic components in 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 connecting connector 25 in the bus circuit board through the rear plate connecting plug 14 and the installation shell rear plate connecting socket 29, which has a cable passing through the anti-interference magnetic ring 30, so as to realize the anti-interference mutual connection 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 connected to each other with the external device through the external terminal 24 of the bus circuit board.

[0027] There is an external terminal housing 31 on the external terminal 24 connecting the two ends of the bus circuit board 22, and there is an external terminal housing cover 32 on the external terminal housing 31, which is opened and covered 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, which is used for connection, isolation and protection of some specific components.

[0028] The front panel 13 of the metal box of PCS (C), BMS, EMS, FMS and PMS has obvious functional distinction marks 34 of PCS (C), BMS, EMS, FMS and PMS respectively; there is an AC box function mark 35 above the AC circuit breaker handle 8 of the device front panel 1, and a DC box function mark 36 above the DC circuit breaker handle 11, and there is a converter box function mark 37 on the corresponding upper part of PCS (C), indicating that the rear part of the box of the microgrid battery energy storage integrated device is AC, DC and converter primary circuit respectively; the upper part of the device front panel 1 is the device name mark 38, and the upper end of the PCS (C) is the device manufacturer name mark 39; there are ventilation holes (windows) 40 in the central part of the device front panel 1 and around the AC circuit breaker handle 8 and the DC circuit breaker handle 11, which are used for ventilation and cooling in 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) A connection bus circuit board is arranged at the front of the horizontal box to connect 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 arranged at the rear of each metal box; (4) According to the logical relationship between the AC to DC conversion and the DC to AC conversion of the microgrid battery energy storage integrated device, the AC box, converter box and DC box are arranged so that the AC box and the DC box are located on the two sides of the converter box respectively; and according to the relevant connectivity between the PCS (C), BMS, FMS, PMS, 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.

2. The box front structure of a microgrid battery energy storage integrated device according to claim 1, characterized in that: The device comprises a rectangular basin-shaped device 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), and a DC circuit breaker handle ( 11), 1 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) in front and a metal box rear panel connector (14) in the back; the device front panel (1) 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), and PMS metal box (6); the PCS (C) metal box (2), BMS metal box (3), EMS metal box (4), The metal box rear panel connector (14) of the FMS metal box (5) and the PMS metal box (6) can be inserted through 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, and PMS metal box front panels (13) with 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 composed of 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 (8), the PMS metal box (6), the BMS metal box (3), the DC circuit breaker handle (8), the PMS metal box (6), the BMS metal box (3), the P ... The AC circuit breaker handle (11) and the FMS metal box (5) are respectively provided with a PCS (C) metal box (2) and a BMS metal box (3), an EMS metal box (4), an FMS metal box (5), and a PMS metal box (6) and are respectively provided with a side-mounted metal box; the AC circuit breaker handle (8) is connected to a 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 a 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 between 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 box front structure of a 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. A metal box fixing bolt (17) is disposed in the metal box fixing hole (16). A metal box fixing nut (18) is disposed on the inner side of the device front panel (1) corresponding to the metal box fixing bolt (17). The metal box fixing nut (18) is fixed to the inner side of the device front panel (1). A bolt retaining spring (19) is disposed on the metal box fixing bolt (17). The metal box front panel (13) 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) is provided with a status indicator light (20) and a debugging interface (21).

4. The box front structure of a microgrid battery energy storage integrated device according to claim 2 is characterized by: A bus connection circuit board (22) is provided at the bottom of the inner side of the front panel (1) of the device. The bus connection circuit board (22) spans the PCS (C) metal box (2). The outer sides of the left and right ends of the bus connection circuit board (22) are provided with external connection terminals (24), and the inner side is provided with internal connection connectors (25). 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 provided with metal mounting shells (26) for mounting 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 (26) 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 shells. The metal mounting shell (26) has a mounting shell rear plate (28) at the rear end, the mounting shell rear plate (28) has 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 arranged 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 connecting bus circuit board through the rear plate connection plug (14) and the mounting shell rear plate connection socket (29) having a cable passing through the anti-interference magnetic ring (30), so as to realize the 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 connecting 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 housing (31) is provided on the external terminal (24) connected to the two ends of the bus circuit board (22), and an external terminal housing cover (32) is provided on the external terminal housing (31) for opening and closing when connecting or removing external wiring. A miniature circuit breaker (33) is installed near the AC circuit breaker handle (8) on the front panel (1) of the device.

6. The box front structure of a microgrid battery energy storage integrated device according to claim 1 is characterized in that: The front panel is divided into areas and marked with corresponding functions according to the device operation logic, and the external wiring terminals are protected and concealed; The front panels (13) of the metal boxes of the PCS (C), BMS, EMS, FMS and PMS are respectively provided with obvious functional distinction marks (34) of the bidirectional converter system, battery management system, electric energy management system, fire management system and power management system of the PCS (C), BMS, EMS, FMS and PMS; there is an AC box function mark (35) above the AC circuit breaker handle (8) of the device front panel (1), a DC box function mark (36) above the DC circuit breaker handle (11), and a converter box function mark (37) on the upper part of the corresponding PCS (C), respectively indicating that the rear part of the box of the microgrid battery energy storage integrated device is an AC, DC and converter primary circuit; the upper part of the device front panel (1) is provided with the device name mark (38), and the upper end of the PCS (C) is provided with the device manufacturer name mark (39); there are ventilation holes (windows) (40) in the central part of the device front panel (1) and around the AC circuit breaker handle (8) and the DC circuit breaker handle (11) for ventilation and cooling inside the device.

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