Energy storage converter and energy storage system

Abstract

The utility model relates to electrical installation structure technical field, concretely relates to a kind of energy storage converter and energy storage system.Energy storage converter includes shell and the inner mounting frame being set in shell, and inner mounting frame includes with the top plate, bottom plate of shell spaced opposite layering board and at the left and right direction of layering board at least one end setting side mounting plate, side mounting plate and the left and right direction side plate of shell spaced opposite, shell inside has between layering board and shell top plate upper space, between layering board and shell bottom plate lower space and between side mounting plate and opposite shell side plate side space, upper space, lower space, side space are formed component mounting space, the height of the upper and lower direction of side space is greater than the corresponding height of upper space and lower space.Utilize shell top plate and the distance between bottom plate satisfy the installation of higher component, can reduce shell overall height, thereby reduce volume.

Description

Technical Field

[0001] This utility model relates to the field of electrical component installation structure technology, specifically to an energy storage converter and energy storage system. Background Technology

[0002] With the rapid development of new energy sources and smart grids, energy storage technology has become one of the key technologies in power systems. As the core equipment of energy storage systems, the performance and efficiency of energy storage converters directly affect the overall efficiency and stability of energy storage systems.

[0003] Energy storage converters require the installation of numerous components. To save space, many products currently employ a layered layout. For example, a converter disclosed in Chinese utility model patent CN222776119U includes a housing, shelves, and electronic components. The shelves divide the interior of the housing into a first compartment and a second compartment. Electronic components are fixed to the shelves or the housing. Various types of electronic components can be used, located in the first and / or second compartments. Different types of electronic components can be placed in the first and second compartments respectively. High-heat-generating electronic components are placed in the second compartment, while low-heat-generating electronic components are placed in the first compartment. This zoned layout allows for more efficient heat dissipation and also facilitates the installation and maintenance of the converter. The housing constitutes the outer shell, and the shelves constitute the layered panels. The outer shell is a square box structure with a front panel, rear panel, left and right side panels, top panel, and bottom panel.

[0004] In this conventional partitioned design, the layered plate divides the internal space of the casing into two layers, forming upper and lower spaces. The vertical direction is also the height direction of the converter, and the space in the height direction of the casing is the space between the top and bottom plates. Since the layered plate divides the internal space into upper and lower layers, each layer needs to install components. Some components require a large amount of height space. In order to meet the installation space requirements of the components, the distance between the layered plate and the top and bottom plates should be large enough, that is, the height of the casing should be high enough. This results in a large overall height and volume of the energy storage converter, which occupies more space and has a lower power density. Utility Model Content

[0005] The purpose of this utility model is to provide an energy storage converter to solve the problem that the current energy storage converter has a large volume due to the need for a large shell height dimension in the layered structure; the purpose of this utility model is also to provide an energy storage system to solve the above-mentioned technical problems.

[0006] The technical solution of the energy storage converter of this utility model is as follows: An energy storage converter includes a housing and an inner mounting frame disposed within the housing. The inner mounting frame includes a layered plate that is spaced apart from the top and bottom plates of the housing, and a side mounting plate disposed at at least one end of the layered plate in the left-right direction. The side mounting plate is spaced apart from the side plates of the housing in the left-right direction. The housing has an upper space between the layered plate and the top plate of the housing, a lower space between the layered plate and the bottom plate of the housing, and a side space between the side mounting plate and the opposite side plate of the housing. The side mounting plate is provided with a side mounting structure for mounting components. The upper space, the lower space, and the side space all form component mounting spaces. The vertical height of the side space is greater than the corresponding height of the upper space and the lower space.

[0007] Furthermore, the side mounting structure includes a support plate perpendicular to the side mounting plate, with one end of the support plate fixed to the side mounting plate in the left and right directions and the other end extending outwards.

[0008] Furthermore, the support plate and the layered plate are at different heights in the vertical direction.

[0009] Furthermore, the layered plate is provided at both ends in the left and right directions, forming two side spaces separated by the left and right sides inside the shell. The layered plate and the two side mounting plates are fixed, and a fixing beam is connected between the two side mounting plates. The fixing beam and the layered plate are spaced apart vertically.

[0010] Furthermore, the lower space is provided with a lower fan for dissipating heat from the components in the lower space, and the side space is provided with a side fan for dissipating heat from the components in the upper space. An opening is provided on the side mounting plate corresponding to the position of the side fan.

[0011] Furthermore, the inner mounting bracket is spaced apart from the front panel of the housing, and the housing has a front space located between the front panel and the inner mounting bracket, in which an AC circuit breaker and a DC disconnect switch are installed.

[0012] Furthermore, the internal mounting bracket includes a front mounting plate spaced apart from the front panel of the housing, with a front space located between the front panel and the front mounting plate, and an AC circuit breaker and a DC disconnect switch mounted on the front mounting plate.

[0013] Furthermore, connecting plates are provided at both the front and rear ends of the side mounting plate, and the connecting plates are fixedly connected to the side plate of the outer shell.

[0014] Furthermore, the connecting plate is provided with clearance openings for avoiding components.

[0015] Beneficial Effects: This utility model innovatively provides a partitioned and layered energy storage converter. By setting an internal mounting rack inside the casing, the layered plates of the internal mounting rack cooperate with the top and bottom plates of the casing to form upper and lower spaces. The space between the side mounting plates of the internal mounting rack and the side plates of the casing forms a side space. The height of the side space is not affected by the layered plates, allowing for a larger height. This satisfies the requirements for the layered arrangement of components in the energy storage converter, while allowing some components with higher mounting height requirements to be installed in the side space. It also makes full use of the distance between the top and bottom plates of the casing to accommodate taller components. Thus, the height of the upper and lower spaces can be lower, thereby reducing the overall height of the casing, reducing the volume of the energy storage converter, reducing the space occupied, and increasing the power density.

[0016] The technical solution of the energy storage system of this utility model is as follows: An energy storage system includes an energy storage converter and an energy storage battery pack or energy storage capacitor pack. The energy storage converter includes a housing and an inner mounting frame disposed within the housing. The inner mounting frame includes a layered plate that is spaced apart from the top and bottom plates of the housing and a side mounting plate disposed at at least one end of the layered plate in the left-right direction. The side mounting plate is spaced apart from the side plates of the housing in the left-right direction. The housing has an upper space between the layered plate and the top plate of the housing, a lower space between the layered plate and the bottom plate of the housing, and a side space between the side mounting plate and the opposite side plate of the housing. The side mounting plate is provided with a side mounting structure for mounting components. The upper space, the lower space, and the side space all form component mounting spaces. The vertical height of the side space is greater than the corresponding heights of the upper and lower spaces.

[0017] Furthermore, the side mounting structure includes a support plate perpendicular to the side mounting plate, with one end of the support plate fixed to the side mounting plate in the left and right directions and the other end extending outwards.

[0018] Furthermore, the support plate and the layered plate are at different heights in the vertical direction.

[0019] Furthermore, the layered plate is provided at both ends in the left and right directions, forming two side spaces separated by the left and right sides inside the shell. The layered plate and the two side mounting plates are fixed, and a fixing beam is connected between the two side mounting plates. The fixing beam and the layered plate are spaced apart vertically.

[0020] Furthermore, the lower space is provided with a lower fan for dissipating heat from the components in the lower space, and the side space is provided with a side fan for dissipating heat from the components in the upper space. An opening is provided on the side mounting plate corresponding to the position of the side fan.

[0021] Furthermore, the inner mounting bracket is spaced apart from the front panel of the housing, and the housing has a front space located between the front panel and the inner mounting bracket, in which an AC circuit breaker and a DC disconnect switch are installed.

[0022] Furthermore, the internal mounting bracket includes a front mounting plate spaced apart from the front panel of the housing, with a front space located between the front panel and the front mounting plate, and an AC circuit breaker and a DC disconnect switch mounted on the front mounting plate.

[0023] Furthermore, connecting plates are provided at both the front and rear ends of the side mounting plate, and the connecting plates are fixedly connected to the side plate of the outer shell.

[0024] Furthermore, the connecting plate is provided with clearance openings for avoiding components.

[0025] Beneficial Effects: This utility model innovatively provides a partitioned and layered energy storage converter. By setting an internal mounting rack inside the casing, the layered plates of the internal mounting rack cooperate with the top and bottom plates of the casing to form upper and lower spaces. The space between the side mounting plates of the internal mounting rack and the side plates of the casing forms a side space. The height of the side space is not affected by the layered plates, allowing for a larger height. This satisfies the requirements for the layered arrangement of components in the energy storage converter, while allowing some components with higher mounting height requirements to be installed in the side space. It also makes full use of the distance between the top and bottom plates of the casing to accommodate taller components. Thus, the height of the upper and lower spaces can be lower, thereby reducing the overall height of the casing, reducing the volume of the energy storage converter, reducing the space occupied, and increasing the power density. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the energy storage converter of this utility model; Figure 2 for Figure 1 A schematic diagram showing the disassembled enclosure of the energy storage converter in the diagram; Figure 3 for Figure 1 A schematic diagram with the main housing and top cover removed; Figure 4 for Figure 1 Top view after removing the top cover; Figure 5 for Figure 1 Top view after removing the base plate; Figure 6 for Figure 5 A diagram showing the screen after the heatsink has been removed.

[0027] In the diagram: 1. Enclosure; 2. AC circuit breaker operating handle; 3. Indicator light; 4. Communication interface terminal; 5. DC disconnect switch operating handle; 6. Front handle; 7. AC external wiring terminal; 8. DC external wiring terminal; 9. DC external power supply terminal; 10. AC external power supply terminal; 11. Non-electrical quantity interface terminal; 12. DC disconnect switch; 13. AC circuit breaker; 14. AC / DC board; 15. Main control board; 16. IGBT driver and capacitor board; 17. AC filter inductor; 18. Inductor board; 19. Heat sink; 20. Cooling fan; 21. Secondary DC fuse; 22. DC contactor; 23. DC Hall effect sensor; 24. Surge protector; 25. Busbar; 26. IGBT device; 27. Switching power supply; 28. Power supply board; 29. ​​Secondary DC fuse; 101. Front panel; 102. Main housing; 103. Top cover; 104. Internal mounting bracket; 1041. Side mounting plate; 105. Fan ventilation plate; 106. Handle; 110. Front space; 111. Side space; 112. Upper space; 113. Lower space. Detailed Implementation

[0028] The basic concept of this energy storage converter is to form a through space between the top and bottom plates of the outer casing while creating a layered space. This allows for the layered arrangement of components and the installation of taller components, thus enabling partitioned and layered installation. This reduces the height of the outer casing and consequently the volume of the energy storage converter.

[0029] The present invention will be described in detail below with reference to specific embodiments. Embodiments of the energy storage converter of this utility model: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the energy storage converter includes a housing 1 and various components installed inside the housing 1. The components include an AC circuit breaker operating handle 2, indicator lights 3, communication interface terminals 4, a DC disconnect switch operating handle 5, a front handle 6, AC external wiring terminals 7, DC external wiring terminals 8, DC external power supply terminals 9, AC external power supply terminals 10, non-electrical interface terminals 11, a DC disconnect switch 12, an AC circuit breaker 13, an AC / DC board 14, a main control board 15, an IGBT driver and capacitor board 16, an AC filter inductor 17, an inductor board 18, a heat sink 19, a cooling fan 20, a secondary DC fuse 21, a DC contactor 22, a DC Hall effect sensor 23, a surge protector 24, a busbar 25, IGBT devices 26, a switching power supply 27, a power board 28, and a secondary DC fuse 29.

[0030] Combination Figure 2 The enclosure 1 includes a square outer shell and an inner mounting bracket 104 disposed within the outer shell. The outer shell includes a front panel 101, a main shell 102, and a top cover 103. The main shell 102 is an integrally formed structure, formed by bending sheet metal. The main shell 102 includes a bottom plate, a left side plate, a right side plate, and a rear plate. The bottom plate of the main shell 102 constitutes the bottom plate of the outer shell, the top cover 103 constitutes the top plate of the outer shell, the left side plate and the right side plate of the main shell 102 constitute the left and right side plates of the outer shell, and the rear plate of the main shell 102 constitutes the rear plate of the outer shell.

[0031] The front panel 101 features a mounting structure for installing components. The main housing 102 is a single, integrated structure, reducing fixed connection points, assembly and after-sales maintenance procedures, and lowering costs. Furthermore, the surface of the main housing 102 is smoother and more aesthetically pleasing. The latches at the front of the top cover 103 engage with the slots at the top of the front panel 101. The rear end of the top cover 103 is connected to the upper end of the back panel with screws; removing only a few screws at the rear end allows the top cover 103 to be lifted, facilitating disassembly and maintenance. Handles 106 are installed on the left and right side panels of the main housing 102. These handles have a recessed structure, which does not increase the overall dimensions of the housing 1, saving space and contributing to a clean and simple appearance.

[0032] All structural components of the internal mounting bracket 104 can be assembled into a single unit, facilitating the installation of electrical components before they are placed into the main housing 102. The internal mounting bracket 104 includes a layered plate, side mounting plates 1041, and a front mounting plate. The layered plate is located in the middle of the vertical direction within the housing. The side mounting plates 1041 are spaced apart from the side panels of the housing, the front mounting plate is spaced apart from the front panel 101, and the layered plate is spaced apart from the top and bottom plates of the housing. There are two side mounting plates 1041, left and right. The left and right ends of the layered plate are connected to the two side mounting plates 1041 respectively, and the front end of the layered plate is connected to the front mounting plate. Both the side mounting plates 1041 and the front mounting plate are arranged perpendicular to the layered plate. The interior of the housing has an upper space 112 between the layered plate and the top plate of the housing, a lower space 113 between the layered plate and the bottom plate of the housing, a side space 111 between the side mounting plates 1041 and the opposite side panels of the housing, and a front space 110 between the front mounting plate and the front panel 101. The upper space 112 is formed by the upper cover plate 103, the layered plate, the left and right side mounting plates 1041, the front mounting plate, and the rear panel of the main housing 102. The lower space 113 is formed by the layered plate, the bottom plate, the left and right side mounting plates 1041, the front mounting plate, and the fan ventilation plate 105. The rear panel of the main housing 102 has an opening to avoid the fan ventilation plate 105, and the fan ventilation plate 105 is fixed to the side mounting plates 1041. The part of the handle 106 protruding inward from the side plate can be avoided by utilizing the side space 111.

[0033] The upper space 112, lower space 113, and side space 111 all form component mounting spaces. The side mounting plate 1041 is provided with a side mounting structure for component mounting. The vertical height of the side space 111 is greater than the corresponding heights of the upper space 112 and lower space 113. The height of the side space 111 is not affected by the layering plates, allowing for a larger height space. This satisfies the layered arrangement of components in the energy storage converter while allowing some components with higher mounting height requirements to be installed in the side space 111. It makes full use of the distance between the top and bottom plates of the casing to accommodate taller components. As a result, the heights of the upper space 112 and lower space 113 can be smaller, thereby reducing the overall height of the casing, reducing the volume of the energy storage converter, reducing the space occupied, and increasing the power density.

[0034] The side mounting structure on the side mounting plate 1041 includes a support plate perpendicular to the side mounting plate 1041. One end of the support plate in the left-right direction is fixed to the side mounting plate 1041, and the other end extends outwards. The thickness direction of the support plate is the vertical direction. Some components can be mounted on the upper surface of the support plate. By using the support plate as a fixed mounting base, the side space 111 can be utilized while facilitating installation operations. In other embodiments, the support plate may not be provided, and the components can be mounted on the side of the side mounting plate facing the side plate. In other embodiments, the support plate may also be fixedly connected to the side plate of the outer casing.

[0035] Two or more support plates can be installed within the same side space 111. These support plates can be installed vertically, spaced apart, aligned vertically, or staggered. The support plates and the layered plates have different heights in the vertical direction. The fixed positions of the support plates are set according to the required installation height of the components, allowing for more flexible use of space. In other embodiments, only one support plate can be installed, or two support plates can be arranged at intervals in the front-back direction.

[0036] In this embodiment, side mounting plates 1041 are provided at both ends of the layered plate in the left and right directions. There are two side mounting plates 1041, which creates two side spaces 111 separated by left and right sides inside the shell. The two side mounting plates 1041 are basically symmetrically arranged, dividing the space and allowing for more flexible layout. The left and right ends of the layered plate are fixed to the two side mounting plates 1041, and a fixing beam connects the two side mounting plates 1041. The fixing beam is spaced apart from the layered plate. In this embodiment, the fixing beam is fixed at the upper end of the two side mounting plates 1041, and there are two or more fixing beams, which can improve the structural strength. In other embodiments, the fixing beam may not be provided. Moreover, in other embodiments, only one side mounting plate may be provided, with one end of the layered plate in the left and right directions fixed to the side mounting plate and the other end fixed to the side plate of the shell.

[0037] Connecting plates are provided at both the front and rear ends of the side mounting plate 1041. The connecting plates are fixedly connected to the side plates of the outer casing. The connecting plates and the side mounting plate 1041 are integral structures, formed by bending a sheet metal into one piece. The connecting plates are bent perpendicularly to the side mounting plate 1041 to form a U-shaped structure. The fixed connection between the connecting plates and the side plates of the outer casing helps to ensure structural strength and facilitates assembly. The connecting plates are provided with clearance openings for avoiding components such as copper busbars, facilitating the connection operation between components in the side space 111 and components in the front space 110. In other embodiments, the connecting plates may be omitted, and the side mounting plates may be fixedly connected to the bottom plate and top plate of the outer casing.

[0038] In this embodiment, the cooling fan 20 includes a lower fan and side fans. The lower fan is located in the lower space 113 and is used to dissipate heat from the components in the lower space 113. The side fans are located in the side spaces 111 and are used to dissipate heat from the components in the upper space 112. The side mounting plate 1041 has openings corresponding to the positions of the side fans to ensure that the side fans can ventilate and dissipate heat. There are multiple lower fans, which are arranged side by side in the left-right direction at the rear port of the lower space 113 for blowing air inward. Side fans are provided in both side spaces 111, located at the upper part of the side spaces 111. The left and right side fans blow air in opposite directions, which can dissipate heat from the upper space 112. Arranging some fans in the side spaces 111 saves installation space in the upper layer and helps to reduce the size of the converter. In other embodiments, the fans used to dissipate heat from the upper space can also be arranged at the rear port of the upper side space.

[0039] A row of lower fans is located inside the fan ventilation plate 105. The fan ventilation plate 105 is provided with ventilation and heat dissipation holes. The fan ventilation plate 105 is independently designed, which is easy to disassemble and facilitates the maintenance and replacement of the lower fans.

[0040] The inner mounting bracket 104 is spaced apart from the front panel 101 of the housing. The front space 110 is located between the front panel 101 and the front mounting plate of the inner mounting bracket 104. The front space is also a component mounting space and is enclosed by the front panel 101, the front mounting plate, and the top and bottom plates of the housing. The AC circuit breaker 13 and the DC disconnect switch 12 are mounted on the front mounting plate. The AC circuit breaker 13 and the DC disconnect switch 12 are located in the front space 110, which is also a through space between the top and bottom plates, facilitating the integration of the high-voltage switch into the converter. In other embodiments, if space requirements are met, the front space may be omitted, and the front end of the layered plate may extend directly to the front panel.

[0041] The energy storage converter is a horizontal module. The upper left of the front panel 101 is equipped with AC external connection terminals 7 (ABCN). The upper left and right sides of the middle section are equipped with AC circuit breaker operating handle 2 and DC disconnect switch operating handle 5, respectively. The middle center of the upper section is equipped with operation and fault indicator lights 3 and communication interface terminal 4. The indicator lights 3 show the operating status of the converter. The right side of the front panel 101 is equipped with positive and negative DC external connection terminals 8, DC external power supply terminals 9, AC external power supply terminals 10 and non-electrical interface terminals 11, from top to bottom. The lower sides of the front panel 101 are equipped with front handles 6 to facilitate the installation and removal of the converter from the corresponding cabinet. The lower middle section of the front panel 101 is full of heat dissipation holes.

[0042] Electrical components are arranged in the upper space 112, lower space 113, front space 110, and side space 111. At the center of the rear of the front panel 101 are the AC circuit breaker 13 and the DC disconnect switch 12. Behind them in the upper space 112 are the AC / DC board 14 and the main control board 15, followed by the IGBT driver and capacitor board 16. Below the IGBT driver board are IGBT devices 26. One end of the AC circuit breaker 13 and the DC disconnect switch 12 is connected to the DC external terminal 8 and the AC external terminal 7 on the front panel 101 via a busbar 25. The other end is connected to the terminals of the AC / DC board 14 via a cable. The AC / DC board 14 is connected to the IGBT driver and capacitor board 16 via a cable.

[0043] In the lower space 113 directly behind the front panel 101, the AC filter inductor 17 is located at the front, followed by the inductor board 18, then the heat sink 19, and finally a set of four cooling fans 20, which are the lower fans, blowing air from back to front to accelerate the heat dissipation of the heat sink 19, the inductor board 18, and the AC filter inductor 17.

[0044] The surge protector 24, secondary DC fuse 21, switching power supply 27, power board 28, and cooling fan 20 are arranged sequentially from front to back in the side space 111 directly behind the front panel 101 on the left. The cooling fan here is the side fan.

[0045] The secondary DC fuse 29, DC contactor 22, DC Hall plate 23, and cooling fan 20 are arranged sequentially from front to back in the side space 111 directly behind the front panel 101 on the right side. One side of the secondary DC fuse 29 is connected to the DC disconnect switch 12 by a connecting copper busbar, and the other side is connected to the DC contactor 22 by a connecting copper busbar. The other side of the DC contactor 22 is connected to the DC Hall plate 23 by a connecting copper busbar, and the other side of the DC Hall plate 23 is connected to the IGBT driver and capacitor board 16 by a connecting copper busbar.

[0046] The cooling fans 20 on both the left and right sides, located at the rear, blow air towards the center to dissipate heat from the capacitors on the capacitor board. After the airflows converge, the hot air flows forward and is blown out of the enclosure 1 through the ventilation holes at the bottom of the front panel 101. Through-holes are provided on the layered board as needed. The heat dissipation surface of the IGBT device 26 is attached to the heat sink 19, and its upper part is connected to the IGBT driver and capacitor board 16, resulting in a compact layout and good heat dissipation.

[0047] The converter is installed inside the combiner cabinet of the energy storage system. External connection terminals and operating handles are all located on the front panel 101, allowing for front-side maintenance of the converter, reducing the need for cabinet doors and maintenance space, and minimizing the overall size of the combiner cabinet. AC and DC wiring are separated, ensuring no crossing and facilitating both safety and operation.

[0048] The converter incorporates a DC disconnect switch 12 and an AC circuit breaker 13 to achieve on / off control and fault isolation of the high-voltage circuit. The combiner cabinet eliminates the need for a high-voltage switch, resulting in higher standardization, modular integration, and easier operation and maintenance. The AC circuit breaker 13, located in the AC side circuit, provides overload and short-circuit protection. When the current exceeds a set value, the AC circuit breaker 13 automatically trips, disconnecting the circuit. The disconnect switch, located in the DC side circuit, isolates the circuit, for example, by isolating the connection between the energy storage container and an external power system.

[0049] The main heat-generating components, such as IGBTs, heat sinks 19, inductor boards 18, and AC filter inductors 17, are placed on one layer and cooled by a row of cooling fans 20. Secondary heat-generating components, such as capacitor boards, AC / DC boards 14, and main control boards 15, are placed on another layer and cooled by small-sized side fans. This reasonable heat dissipation layout results in high heat dissipation efficiency. Fuses and contactors are installed on both the positive and negative terminals of the DC side, ensuring more reliable DC protection. Contactors are installed on the AC / DC boards 14 for the three phases (A, B, C) of the AC side, working in conjunction with the AC circuit breaker 13 for enhanced breaking capacity. The converter enclosure 1 is highly integrated, aesthetically pleasing, and easy to assemble and disassemble.

[0050] The modular design of the energy storage converter allows for flexible configuration and expansion based on actual needs, enabling precise adjustment of the energy storage system capacity to meet the requirements of various industrial and commercial energy storage applications. The converter features a compact layout with separate, layered DC and AC sides, excellent ventilation and heat dissipation, small size, high power density, and high conversion efficiency, adapting to the development requirements of next-generation products.

[0051] Embodiments of the energy storage system of this utility model: The energy storage system includes an energy storage converter and an energy storage battery pack or energy storage capacitor pack. The energy storage converter is the same as that in the above embodiments and will not be described again here. The DC interface of the energy storage converter can be connected to the energy storage battery pack or energy storage capacitor pack via a cable, and the AC interface of the energy storage converter can be connected to the existing power grid via a cable.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy storage converter, characterized in that, The device includes an outer casing and an inner mounting bracket disposed within the casing. The inner mounting bracket includes a layered plate that is spaced apart from the top and bottom plates of the casing, and a side mounting plate disposed at at least one end of the layered plate in the left-right direction. The side mounting plate is spaced apart from the side plates of the casing in the left-right direction. The casing has an upper space between the layered plate and the top plate of the casing, a lower space between the layered plate and the bottom plate of the casing, and a side space between the side mounting plate and the opposite side plate of the casing. The side mounting plate is provided with a side mounting structure for mounting components. The upper space, the lower space, and the side space all form component mounting spaces. The vertical height of the side space is greater than the corresponding height of the upper space and the lower space.

2. The energy storage converter according to claim 1, characterized in that, The side mounting structure includes a support plate perpendicular to the side mounting plate, with one end of the support plate fixed to the side mounting plate in the left and right directions and the other end extended outwards.

3. The energy storage converter according to claim 2, characterized in that, The support plate and the layered plate are at different heights in the vertical direction.

4. The energy storage converter according to claim 1, 2, or 3, characterized in that, The layered plate has side mounting plates at both ends in the left and right directions, forming two side spaces separated by the left and right sides inside the shell. The layered plate and the two side mounting plates are fixed, and a fixing beam connects the two side mounting plates. The fixing beam and the layered plate are spaced apart vertically.

5. The energy storage converter according to claim 1, 2, or 3, characterized in that, The lower space is equipped with a lower fan for cooling the components in the lower space, and the side space is equipped with a side fan for cooling the components in the upper space. The side mounting plate has an opening corresponding to the position of the side fan.

6. The energy storage converter according to claim 1, 2, or 3, characterized in that, The inner mounting bracket is spaced apart from the front panel of the housing. The housing has a front space located between the front panel and the inner mounting bracket, in which an AC circuit breaker and a DC disconnect switch are installed.

7. The energy storage converter according to claim 6, characterized in that, internal The mounting bracket includes a front mounting plate that is spaced apart from the front panel of the housing. The front space is located between the front panel and the front mounting plate. AC circuit breakers and DC disconnect switches are mounted on the front mounting plate.

8. The energy storage converter according to claim 1, 2, or 3, characterized in that, The front and rear ends of the side mounting plate are respectively provided with connecting plates, which are fixedly connected to the side plates of the outer shell.

9. The energy storage converter according to claim 8, characterized in that, The connecting plate is provided with clearance openings for avoiding components.

10. An energy storage system, characterized in that, The energy storage converter, including any one of claims 1-9, further includes an energy storage battery pack or an energy storage capacitor pack.

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