Structure convenient to operate and maintain of micro-grid battery energy storage integrated device

Abstract

The invention discloses a convenient operation and maintenance structure of a micro-grid battery energy storage integrated device, which comprises a steel machine frame, a front panel, an upper cover plate and a lower cover plate, and is characterized in that the machine frame is formed by welding a front plate, a rear panel, a right side plate, a left side plate, a right partition plate, a left partition plate and a middle partition plate; a front panel is mounted in front of the machine frame, an upper cover plate is mounted at an upper opening, and a lower cover plate is mounted at a lower opening; the machine frame is longitudinally divided into an alternating-current box, a converter box and a direct-current box by the right partition plate and the left partition plate; the short middle partition plate is connected with the rear panel and divides the converter box into an upper converter chamber, a lower converter chamber and a front converter chamber. The micro-grid battery energy storage comprehensive device has the characteristics of simplicity and reasonability, is easy to produce and manufacture, is low in cost, is convenient to operate and maintain after being installed and used, is quick and timely in fault judgment and processing, and is beneficial to improving the use effect and popularization and application of the micro-grid battery energy storage comprehensive device.

Description

Technical Field

[0001] The invention relates to a structure of a microgrid battery energy storage comprehensive device which is convenient for operation and maintenance. 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 batteries for storing electrical energy, the microgrid battery energy storage equipment cabinet also has a bidirectional power conversion system (PCS) function that converts the grid's AC power into DC power and the battery's DC power into AC power, a safe and economical operation management system (BMS) function for energy storage batteries, and a microgrid battery energy storage integrated device that charges and discharges energy from energy storage batteries, stores and generates electricity for equipment, and distributes and supplies electricity for safety and economical operation management systems (EMS).

[0005] The microgrid battery energy storage complex is a very complex electrical, electronic, and microelectronic device that contains hundreds or thousands of components. Compared with other devices in the cabinet, it has a higher failure rate, so it is very important to facilitate its operation and maintenance.

[0006] Existing microgrid battery energy storage integrated devices generally have unreasonable structures. Therefore, they are not only difficult to manufacture and costly, but also very difficult to operate and maintain after the device is installed. Once a failure occurs, it cannot be quickly diagnosed and handled, which affects its use effect and popularization and application. Summary of the invention

[0007] The object of the present invention is to provide a structure for a microgrid battery energy storage integrated device that is easy to operate and maintain, has fast and timely fault judgment and processing, and is conducive to improving the use effect and is easy to operate and maintain.

[0008] The technical solution of the present invention is: A structure for easy operation and maintenance of a microgrid battery energy storage integrated device is characterized in that it includes: a steel machine frame, a front panel, an upper cover plate, and a lower cover plate. The machine frame is formed by welding the front panel, the rear panel, the right side panel, the left side panel, the right partition plate, the left partition plate, and the middle partition plate; the front panel is installed in front of the machine frame, the upper opening is installed with the upper cover plate, and the lower opening is installed with the lower cover plate; the right partition plate and the left partition plate divide the machine frame longitudinally into an AC box, a converter box, and a DC box; the middle partition plate is shorter and connected to the rear panel and divides the converter box into a converter upper chamber, a converter lower chamber, and a converter front chamber.

[0009] EMS secondary devices are installed in a pluggable EMS plug-in box made of metal, PCS secondary devices are installed in a pluggable PCS plug-in box made of metal, and BMS secondary devices are installed in a pluggable BMS plug-in box made of metal; there are metal EMS plug-in box guide shell, PCS plug-in box guide shell, and BMS plug-in box guide shell. The EMS plug-in box guide shell is located in the AC box and fixed at the front of the right partition, the PCS plug-in box guide shell is located in the converter box and fixed at the lower part of the converter front chamber, and the BMS plug-in box guide shell is located in the DC box and fixed at the front of the left partition; the EMS plug-in box guide shell, PCS plug-in box guide shell, and BMS plug-in box guide shell respectively include push-pull plug-in and unplug-type EMS plug-in box, PCS plug-in box, and BMS plug-in box.

[0010] The rear plate of the EMS plug box guide shell, PCS plug box guide shell and BMS plug box guide shell is the guide shell rear circuit board, on which there is a guide shell rear socket; the insertion end of the EMS plug box, PCS plug box and BMS plug box has a plug box connector corresponding to the guide shell rear socket, and the other end has a plug box panel; the area of ​​the plug box panel is slightly larger than the cross-sectional area of ​​the plug box; there are two fastening nuts on the two longitudinal sides outside the open end of the plug box guide shell, and the plug box panel has two fastening bolts corresponding to the fastening nuts, and there are limiting circles on the fastening bolts; there is a plug box hole on the front panel corresponding to the open end of the plug box guide shell, and after the end of the plug box with the connector is inserted into the connector hole, the fastening bolts and the fastening nuts are tightened, so that the plug box connector is inserted into the guide shell rear socket, and thus the plug box is fixed to the plug box guide shell. If the plug-in box is removed from the plug-in box guide shell during maintenance, use a screwdriver to first remove the fastening bolts from the fastening nuts, and then manually pull the plug-in box panel to remove the plug-in box.

[0011] The EMS, PCS and BMS plug-in boxes are equipped with EMS, PCS and BMS functional circuit boards respectively; the plug-in box panels are provided with corresponding working status indicator lights and debugging communication interfaces for debugging.

[0012] There is an AC primary circuit in the AC box, a converter primary circuit in the converter box, and a DC primary circuit in the DC box; the AC primary circuit is connected by the AC input terminal installed on or behind the front panel and the AC circuit breaker and AC fuse using connecting copper parts and connecting fasteners. The AC fuse is located at the upper cover of the AC box for loading and unloading; the operating handle of the AC circuit breaker is installed on the front panel; the converter primary circuit is connected by the filter reactance component installed in the converter upper chamber, the energy storage capacitor component installed in the converter lower chamber, and the IGBT component installed in the converter front chamber using connecting copper parts and connecting fasteners; the DC primary The circuit is formed by connecting the DC input terminal installed on the front panel or on the front panel and the DC circuit breaker, DC fuse and DC relay behind the front panel by using connecting copper parts and connecting fasteners. The DC fuse and DC relay are located at the upper cover of the DC box for loading and unloading and replacement; the operating handle of the DC circuit breaker is installed on the front panel; the AC primary circuit is connected to the filter reactance component by using connecting copper parts and connecting fasteners, and the DC primary circuit is connected to the energy storage capacitor component by using connecting copper parts and connecting fasteners; the AC primary circuit is equipped with an AC interface, the current conversion primary circuit is equipped with a current conversion interface, and the DC primary circuit is equipped with a DC interface.

[0013] There is an external shell connection connector on the circuit board behind the guide shell; the external shell connection connector on the circuit board behind the guide shell of the EMS plug-in box has a wire or cable passing through a long anti-interference magnetic ring and is connected to the AC primary circuit or AC interface; the external shell connection connector on the circuit board behind the guide shell of the PCS plug-in box has a wire or cable passing through a long anti-interference magnetic ring and is connected to the current conversion primary circuit or current conversion interface; the external shell connection connector on the circuit board behind the guide shell of the BMS plug-in box has a wire or cable passing through a long anti-interference magnetic ring and is connected to the DC primary circuit or DC interface.

[0014] The present invention adopts the following measures: 1. the secondary electronic (microelectronic) components of low voltage (micro voltage) and small current (micro current) which account for the vast majority of the number are separated from the primary components of small number, large volume, high voltage and large current, and are installed in the PCS secondary metal box, BMS secondary metal box and EMS secondary metal box which can be installed in a plug-in manner on the front panel; 2. the chassis of the device is divided into three boxes and three chambers according to the function, volume, weight heat generation, electromagnetic interference and dependence of the PCS, BMS and EMS secondary metal boxes on the primary components of the primary components; 3. the more complex PCS primary components (circuits) are divided into three parts which can be easily loaded and unloaded; 4. all the devices and parts which need to be operated and unloaded are installed on the front panel of the device; 5. the primary devices and parts which must be unpacked, unloaded and replaced are installed in a way that they can be loaded and unloaded by just opening the upper cover plate, etc.; the present invention has the characteristics of simplicity and rationality, so that the microgrid battery energy storage integrated device can be easily manufactured and manufactured with low cost, and it is convenient for operation and maintenance after its installation and use, and the fault judgment and processing are fast and timely, which is conducive to improving the use effect and promoting its application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 BB view.

[0018] Figure 3 yes Figure 1 AA view of the .

[0019] Figure 4 yes Figure 1 CC view of the .

[0020] Reference numerals: 001—Frame 002—Front panel 003—Rear Panel 004—Right side panel 005—Left side panel 006—Right bulkhead 007—Left bulkhead 008—Middle partition 009—Front Panel 010—Upper cover 011—Lower cover 012—AC box 013—Converter Box 014—DC box 015—Voltage upper chamber 016—Variable flow chamber 017—Flow conversion chamber 018—EMS plug-in box guide shell 019—PCS plug box guide shell 020—BMS plug-in box guide shell 021—EMS plug box 022—PCS plug box 023—BMS plug box 024—Connecting copper parts 025—Connecting fasteners 101—Circuit board after the housing is guided 102—The housing is connected to the socket 103—Plug box plug 104—Plug box panel 105—Fasten nut 106—Tightening bolts 107—Circle of Restriction 108—Plug-in box hole 109—Functional circuit board 110—Working status indicator light 111—Debug communication interface 112—Connector outside the housing 113—Anti-interference magnetic ring 201—AC primary circuit 202—AC input terminal 203—AC circuit breaker 204—AC fuse 205—AC interface 206—AC circuit breaker operating handle 301—Converter primary circuit 302—Filter reactance components 303—Energy storage capacitor components 304—IGBT components 305—Converter Interface 401—DC primary circuit 402—DC input terminal block 403—DC circuit breaker 404—DC fuse 405—DC relay 406—DC interface 407—DC circuit breaker operating handle DETAILED DESCRIPTION

[0021] A structure for easy operation and maintenance of a microgrid battery energy storage integrated device is characterized in that it includes: a steel machine frame 001, a front panel 009, an upper cover plate 010, and a lower cover plate 011. The machine frame 001 is formed by welding a front panel 002, a rear panel 003, a right side panel 004, a left side panel 005, a right partition plate 006, a left partition plate 007, and a middle partition plate 008; the front panel 009 is installed in front of the machine frame 001, the upper opening is installed with the upper cover plate 010, and the lower opening is installed with the lower cover plate 011; the right partition plate 006 and the left partition plate 007 divide the machine frame 001 into an AC box 012, a converter box 013, and a DC box 014 vertically; the middle partition plate 008 is shorter and connected to the rear panel 003, and divides the converter box 013 into a converter upper chamber 015, a converter lower chamber 016, and a converter front chamber 017. The chassis is divided into three boxes according to the three major functions of the device, and the converter box is divided into three rooms according to the three major components, which is convenient for fault diagnosis and processing. The right partition, left partition, and middle partition are used to divide the space and fix the devices and components. At the same time, they have the functions of heat insulation and electromagnetic interference isolation, which improves the operation stability and reliability.

[0022] The EMS secondary components are installed in the metal pluggable EMS plug box 021, the PCS secondary components are installed in the metal pluggable PCS plug box 022, and the BMS secondary components are installed in the metal pluggable BMS plug box 023; there are metal EMS plug box guide shell 018, PCS plug box guide shell 019, and BMS plug box guide shell 020. The EMS plug box guide shell 018 is fixed in the AC box 012. At the front of the right partition 006, the PCS plug box guide housing 019 is located in the converter box 013 and fixed at the lower part of the converter front chamber 017, and the BMS plug box guide housing 020 is located in the DC box 014 and fixed at the front of the left partition 007; the EMS plug box guide housing 018, PCS plug box guide housing 019, and BMS plug box guide housing 020 respectively contain push-pull plug-in and unplug-in EMS plug box 021, PCS plug box 022, and BMS plug box 023. The microgrid battery energy storage integrated device is a very complex power, electronic, and microelectronic device with hundreds or thousands of components, of which more than 95% are small and micro electronic and microelectronic components. During the operation of the device, the quality problems of these various types and quantities of electronic and microelectronic components account for the vast majority of device failures. Therefore, these electronic and microelectronic components are installed in metal pluggable EMS, PCS, BMS plug boxes 021, 022, 023 according to the functions formed by assembly, so that the vast majority of failures of the microgrid battery energy storage integrated device are controlled in the three plug boxes 021, 022, 023. Modular operation and maintenance plug-in replacement is realized, the metal box has the functions of heat dissipation and anti-electromagnetic interference, the EMS, PCS, BMS plug box guide shells 018, 019, 020 have the function of plug-in guidance, and the metal material has the functions of flame retardancy, heat conduction, and magnetic isolation to improve the reliability of operation. EMS, PCS, BMS plug-in boxes 021, 022, 023 are respectively installed in AC box 012, converter box 013, DC box 014 which are connected to primary devices (circuits) of EMS, PCS, BMS plug-in boxes, so as to shorten the length of connecting lines and improve the reliability of information transmission.

[0023] The rear plate of the EMS plug box guide shell 018, the PCS plug box guide shell 019, and the BMS plug box guide shell 020 is a guide shell rear circuit board 101, on which there is a guide shell rear connection socket 102; the insertion end of the EMS plug box 021, the PCS plug box 022, and the BMS plug box 023 has a plug box connector 103 corresponding to the guide shell rear connection socket 102, and the other end has a plug box panel 104; the area of ​​the plug box panel 104 is slightly larger than the cross-sectional area of ​​the plug boxes 021, 022, and 023; there are two fastening nuts 104 on the longitudinal sides of the opening ends of the plug box guide shells 018, 019, and 020. 5. The plug box panel 104 has two fastening bolts 106 corresponding to the fastening nuts 105, and the fastening bolts 106 are provided with limiting rings 107; the front panel 009 has a plug box hole 108 corresponding to the open end of the plug box guide shells 018, 019, 020, and the plug boxes 021, 022, 023 with the connector 103 are inserted into the plug box hole 108, and then the fastening bolts 106 and the fastening nuts 105 are tightened with a screwdriver, so that the plug box connector 103 is inserted into the guide shell and then connected to the socket 102, and thus the plug boxes 021, 022, 023 are fixed to the plug box guide shells 018, 019, 020. During operation and maintenance, if the plug-in boxes 021, 022, 023 are to be removed from the plug-in box guide shells 018, 019, 020, the fastening bolts 106 are first withdrawn from the fastening nuts 105 with a screwdriver, and then the plug-in box panel 104 is manually pulled to remove the plug-in boxes 021, 022, 023. The plug-in box connector 103 and the guide shell rear connector socket 102 cooperate to disconnect the plug-in boxes 021, 022, 023 from the external connection wires when they are pulled out. For reliable connection, it is difficult to directly insert the plug-in box connector 103 into the guide shell rear connector socket 102 or to pull the plug-in box connector 103 out of the guide shell rear connector socket 102 by hand. The functions of the fastening nut 105 , the fastening bolt 106 and the limiting ring 107 are: the fastening bolt 106 can be turned by a screwdriver to conveniently insert the plug box connector 103 into the guide housing rear connection socket 102 or withdraw it from the guide housing rear connection socket 102 .

[0024] The EMS, PCS, and BMS plug-in boxes 021, 022, and 023 are respectively equipped with EMS, PCS, and BMS functional circuit boards 109; the plug-in box panel 104 is provided with corresponding working status indicator lights 110 and debugging communication interfaces 111 for debugging. The faulty plug-in box can be quickly identified by observing the status indicator lights 110 on the front panel 026 of the plug-in box and using the debugging communication interface 111. The faulty plug-in box 021, 022, or 023 is handled by replacing the fault-free plug-in box, that is, at the site of device use, the device can be kept on the shelf, and the faulty plug-in box 021, 022, or 023 can be removed online using a screwdriver, and then replaced with a spare fault-free plug-in box. The fault judgment and handling is timely and fast, and the faulty plug-in box is repaired offline.

[0025] The AC box 12 has an AC primary circuit 201, the converter box 013 has a converter primary circuit 301, and the DC box 014 has a DC primary circuit 401; the AC primary circuit 201 is formed by connecting the AC input terminal 202 installed on the front plate 002 or the front panel 009 and the AC circuit breaker 203 and the AC fuse 204 behind the front plate 002 using the connecting copper piece 024 and the connecting fastener 025, and the AC fuse 204 is located at the upper cover 010 of the AC box 12 for loading and unloading; the operating handle 206 of the AC circuit breaker 203 is installed on the front panel 009; the converter primary circuit 301 is formed by connecting the filter reactance component 302 installed in the converter upper chamber 015, the energy storage capacitor component 303 installed in the converter lower chamber 016, and the IGBT component 304 installed in the converter front chamber 017 using the connecting copper piece 024 and the connecting fastener 025; the DC primary circuit 401 is composed of a DC input terminal 402 installed on the front plate 002 or the front panel 009 and a DC circuit breaker 403, a DC fuse 404, and a DC relay 405 behind the front plate 002 connected by connecting copper pieces 024 and connecting fasteners 025. The DC fuse 404 and the DC relay 405 are located at the upper part of the DC box 014 where the upper cover 010 is opened for loading and unloading and replacement; the operating handle 407 of the DC circuit breaker 403 is installed on the front panel 009; the AC primary circuit 301 is connected to the filter reactance component 302 by connecting copper pieces 024 and connecting fasteners 025, and the DC main circuit 401 is connected to the energy storage capacitor component 303 by connecting copper pieces 024 and connecting fasteners 025; the AC primary circuit 201 is equipped with an AC interface 205, the current conversion primary circuit 301 is equipped with a current conversion interface 305, and the DC primary circuit 401 is equipped with a DC interface 406. According to the bidirectional conversion characteristics of the device, which converts AC into DC and DC into AC, the AC box and DC box are placed on both sides of the converter box. The AC input terminal 202 and the AC circuit breaker operating handle 206 involved in the operation and maintenance of the AC primary circuit are installed on the front plate 002 and the front panel 009, and the AC circuit breaker 204 is located at the upper cover 010 on the upper part of the AC box 12 for loading and replacement, which is convenient for operation and maintenance. According to the primary function of the PCS of the device, the primary devices are divided into the filter reactance component 302, the energy storage capacitor component 303, and the IGBT304 component, and according to the heat generation, electromagnetic compatibility and mutual connectivity of the three components, they are respectively installed in the converter upper chamber 015, the converter lower chamber 016, and the converter front chamber 017. Not only is the structure simple and convenient for operation and maintenance, loading and replacement, but also the operation reliability is high. The DC input terminal 402 and the DC circuit breaker operating handle 407 involved in the operation and maintenance of the DC primary circuit are installed on the front plate 002 and the front panel 009, and the DC fuse 404 and the DC relay 405 are located at the upper cover 010 on the upper part of the DC box 014 for loading and replacing, which is convenient for operation and maintenance loading and unloading.

[0026] There is a connector 112 for connecting the outer shell of the guide shell on the circuit board 101 behind the guide shell; the connector 112 for connecting the outer shell of the guide shell on the circuit board 101 behind the guide shell of the EMS plug-in box 018 has a wire or cable passing through a long anti-interference magnetic ring 113 and connected to the AC primary circuit 201 or the AC interface 205; the connector 112 for connecting the outer shell of the guide shell on the circuit board 101 behind the guide shell of the PCS plug-in box 019 has a wire or cable passing through a long anti-interference magnetic ring 113 and connected to the primary current conversion circuit 301 or the current conversion interface 305; the connector 112 for connecting the outer shell of the guide shell on the circuit board 101 behind the guide shell of the BMS plug-in box 020 has a wire or cable passing through a long anti-interference magnetic ring 113 and connected to the DC primary circuit 401 or the DC interface 406. The EMS secondary circuit in the EMS plug-in box 021 collects information such as the stored power of the equipment from the AC primary circuit 201 to manage the safe and economical operation of energy storage charging and discharging. The PCS secondary circuit in the PCS plug-in box 022 collects DC and AC voltage and current information from the converter circuit 301 to convert AC power into DC power and vice versa. The BMS secondary circuit in the BMS plug-in box 023 collects the voltage and current information of the energy storage battery from the DC primary circuit 401 to manage the safe and economical operation of the energy storage battery.

Claims

1. A structure for convenient operation and maintenance of a microgrid battery energy storage integrated device, characterized by comprising: A steel machine frame (001), a front panel (009), an upper cover (010), and a lower cover (011). The machine frame (001) is formed by welding a front panel (002), a rear panel (003), a right side panel (004), a left side panel (005), a right partition (006), a left partition (007), and a middle partition (008); the machine frame (001) is provided with a front panel (009), an upper cover (010) is provided at the upper end, and a lower cover (011) is provided at the lower end; the right partition (006) and the left partition (007) divide the machine frame (001) longitudinally into an AC box (012), a converter box (013), and a DC box (014); the middle partition (008) is shorter and connected to the rear panel (003) and divides the converter box (013) into a converter upper chamber (015), a converter lower chamber (016), and a converter front chamber (017).

2. The structure for facilitating operation and maintenance of a microgrid battery energy storage integrated device according to claim 1 is characterized by: The EMS secondary device is installed in a pluggable EMS plug-in box (021) made of metal, the PCS secondary device is installed in a pluggable PCS plug-in box (022) made of metal, and the BMS secondary device is installed in a pluggable BMS plug-in box (023) made of metal; there are a metal EMS plug-in box guide shell (018), a PCS plug-in box guide shell (019), and a BMS plug-in box guide shell (020), and the EMS plug-in box guide shell (018) is located in the AC box (012) and fixed to the right partition ( The guide housing (019) of the PCS plug-in box is located in the converter box (013) and fixed at the lower part of the converter front chamber (017); the guide housing (020) of the BMS plug-in box is located in the DC box (014) and fixed at the front part of the left partition (007); the guide housing (018) of the EMS plug-in box, the guide housing (019) of the PCS plug-in box, and the guide housing (020) of the BMS plug-in box respectively contain an EMS plug-in box (021), a PCS plug-in box (022), and a BMS plug-in box (023) that can be plugged in and unloaded by push-pull type.

3. The structure for facilitating operation and maintenance of a microgrid battery energy storage integrated device according to claim 2 is characterized by: The rear plate of the EMS plug-in box guide shell (018), the PCS plug-in box guide shell (019), and the BMS plug-in box guide shell (020) is a guide shell rear circuit board (101), and a guide shell rear connection socket (102) is disposed on the guide shell rear circuit board (101); the insertion end of the EMS plug-in box (021), the PCS plug-in box (022), and the BMS plug-in box (023) has a plug-in box connection plug (102) corresponding to the guide shell rear connection socket (102). 3), and the other end has a plug box panel (104); the area of ​​the plug box panel (104) is slightly larger than the cross-sectional area of ​​the plug box (021, 022, 023); two fastening nuts (105) are provided on the longitudinal sides of the open end of the plug box guide housing (018, 019, 020), and the plug box panel (104) has two fastening bolts (106) corresponding to the fastening nuts (105), and a limiting ring (106) is provided on the fastening bolt (106). 7); the front panel (009) has a corresponding plug box guide shell (018, 019, 020) with a plug box hole (108) at the open end, the plug box (021, 022, 023) has a plug (103) inserted into the plug box hole (108) and then tighten the fastening bolt (106) and the fastening nut (105), so that the plug box plug (103) is inserted into the guide shell and then connected to the socket (102), and the plug box is thus (021, 022, 023) are fixed to the plug box guide housing (018, 019, 020); when the plug box (021, 022, 023) needs to be removed from the plug box guide housing (018, 019, 020) during operation and maintenance, the fastening bolt (106) is first withdrawn from the fastening nut (105) with a screwdriver, and then the plug box panel (104) is manually pulled to remove the plug box (021, 022, 023).

4. The structure for facilitating operation and maintenance of a microgrid battery energy storage integrated device according to claim 3 is characterized by: The EMS, PCS, and BMS plug-in boxes (021, 022, and 023) are respectively equipped with EMS, PCS, and BMS functional circuit boards (109); and the plug-in box panel (104) is provided with corresponding working status indicator lights (110) and a debugging communication interface (111) for debugging.

5. The structure for facilitating operation and maintenance of a microgrid battery energy storage integrated device according to claim 4 is characterized by: An AC box (12) has an AC primary circuit (201), a converter box (013) has a converter primary circuit (301), and a DC box (014) has a DC primary circuit (401); the AC primary circuit (201) is formed by connecting an AC input terminal (202) installed on a front plate (002) or a front panel (009) and an AC circuit breaker (203) and an AC fuse (204) behind the front plate (002) using connecting copper parts (024) and connecting fasteners (025); the AC fuse (204) is located at The upper cover plate (010) on the upper part of the AC box (12) is open and can be loaded and unloaded; the operating handle (206) of the AC circuit breaker (203) is installed on the front panel (009); the primary circuit (301) of the converter is composed of a filter reactance component (302) installed in the converter upper chamber (015), an energy storage capacitor component (303) installed in the converter lower chamber (016), and an IGBT component (304) installed in the converter front chamber (017), which are connected using a connecting copper piece (024) and a connecting fastener (025); the primary circuit (4 01) is composed of a DC input terminal (402) installed on a front plate (002) or a front panel (009) and a DC circuit breaker (403), a DC fuse (404), and a DC relay (405) behind the front plate (002) connected by connecting copper parts (024) and connecting fasteners (025); the DC fuse (404) and the DC relay (405) are located at the upper cover (010) of the DC box (014) for loading and unloading and replacement; the operating handle (407) of the DC circuit breaker (403) is installed On the front panel (009); the AC primary circuit (301) is connected to the filter reactance component (302) using a connecting copper piece (024) and a connecting fastener (025); the DC primary circuit (401) is connected to the energy storage capacitor component (303) using a connecting copper piece (024) and a connecting fastener (025); the AC primary circuit (201) is equipped with an AC interface (205), the current conversion primary circuit (301) is equipped with a current conversion interface (305), and the DC primary circuit (401) is equipped with a DC interface (406).

6. The structure for facilitating operation and maintenance of a microgrid battery energy storage integrated device according to claim 4 is characterized by: A housing external connection connector (112) is provided on the housing rear circuit board (101); the housing external connection connector (112) on the housing rear circuit board (101) of the EMS plug-in box housing (018) has a wire or cable passing through a long strip anti-interference magnetic ring (113) and is connected to an AC primary circuit (201) or an AC interface (205); the housing external connection connector (112) on the housing rear circuit board (101) of the PCS plug-in box housing (019) has a wire or cable passing through a long strip anti-interference magnetic ring (113) and is connected to a current conversion primary circuit (301) or a current conversion interface (305); the housing external connection connector (112) on the housing rear circuit board (101) of the BMS plug-in box housing (020) has a wire or cable passing through a long strip anti-interference magnetic ring (113) and is connected to a DC primary circuit (401) or a DC interface (406).

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