Inversion unit structure of energy storage converter

Abstract

The utility model provides an energy storage converter inversion unit structure, which comprises a mounting shell, direct current capacitor monomers, a laminated busbar and a power module, capacitor fixing holes are uniformly arranged on a capacitor fixing plate of the mounting shell, each capacitor fixing hole is provided with a fixing piece, each fixing piece is connected with the corresponding direct current capacitor monomer, and the power module is connected with the laminated busbar. The capacitor fixing plate is provided with a capacitor fixing hole, the capacitor fixing plate at the edge of the outer side of the capacitor fixing hole is provided with a heat dissipation groove, the direct-current capacitor monomers form a direct-current capacitor, the direct-current capacitor is in circuit connection with the laminated busbar, the laminated busbar is fixedly arranged on the mounting shell, and the power module is fixedly connected with the laminated busbar. The tool has the advantages of being simple in structure and convenient to operate, saving time and cost, reducing disassembly difficulty and improving disassembly efficiency. On the basis, the overall structure of the device is further adjusted, and meanwhile, the heat dissipation mechanism and the supporting frame are improved, so that the device can meet better heat dissipation requirements and simple operation requirements at the same time and also has higher strength.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage converter equipment, and more specifically to a structure of an inverter unit of an energy storage converter. Background Art

[0002] With the overall high-speed growth of the energy storage industry, as a key product of the energy storage system, the subsequent maintenance of the energy storage converter will be the most important link for the normal operation of the energy storage system. The performance of the energy storage inverter directly affects the charging and discharging efficiency of the energy storage system and the subsequent economic benefits, and the core unit of the energy storage converter is its inverter unit. As the power of the PCS becomes larger and larger, the number of DC capacitors in the capacitor bank of the power unit is also increasing, its volume and mass are also increasing, and its heat dissipation and disassembly become particularly important. Summary of the Utility Model

[0003] The utility model overcomes the deficiencies in the prior art and provides a structure of an inverter unit of an energy storage converter.

[0004] The purpose of the utility model is realized through the following technical solutions.

[0005] A structure of an inverter unit of an energy storage converter includes an installation housing, DC capacitor monomers, a laminated busbar, and a power module. Capacitor fixing holes are uniformly arranged on the capacitor fixing plate of the installation housing, fixing members are provided on each capacitor fixing hole, and each fixing member is connected to the corresponding DC capacitor monomer. A heat dissipation groove is provided on the capacitor fixing plate at the outer edge position of the capacitor fixing hole. Each DC capacitor monomer forms a DC capacitor, the DC capacitor is circuit-connected to the laminated busbar, the laminated busbar is fixedly arranged on the installation housing, and the power module is fixedly connected to the laminated busbar.

[0006] The heat dissipation groove is an unclosed annular through groove.

[0007] The heat dissipation groove is an annular through groove with an unclosed square structure.

[0008] The installation housing includes side plates, a capacitor fixing plate, and a laminated busbar fixing plate. A heat dissipation structure is provided on the side plates, the side plates are fixedly enclosed to form a rectangular frame, the capacitor fixing plate is arranged at one end of the rectangular frame, the laminated busbar fixing plate is arranged annularly around the edge of the opposite end of the rectangular frame, and the laminated busbar fixing plate is fixedly connected to the laminated busbar.

[0009] The laminated busbar fixing plate is an L-shaped cross-section plate body.

[0010] The heat dissipation structure is an array of heat dissipation holes.

[0011] The heat dissipation structure is equidistantly arranged C-shaped grooves.

[0012] The capacitor fixing plate is connected to the rectangular frame through a reinforcing rib.

[0013] The stacked busbar is provided with three columns of PON interfaces. Each column of PON interfaces is provided with 9 interface points connected to the power module. The interface points are arranged in the order of PON-PON-PON from top to bottom.

[0014] A copper busbar inlet interface for PON is provided at the bottom edge of the stacked busbar.

[0015] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and easy to operate. The bottoms of several DC capacitor monomers are connected to the mounting plate through nuts, and the tops of several DC capacitor monomers are electrically connected to the stacked busbar. When maintenance personnel need to disassemble and maintain a certain DC capacitor monomer, they only need to disassemble the corresponding DC capacitor monomer, which saves the inconvenience of disassembling and transporting the entire capacitor bank structure for the maintenance personnel, saves time costs, reduces the disassembly difficulty, and improves the disassembly efficiency. On this basis, the overall structure of the device is further adjusted, and at the same time, the heat dissipation mechanism and the support frame are improved, so that it can meet better heat dissipation requirements and simple operation requirements at the same time, and also has higher strength, suitable for popularization and use. Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Figure 2 is the installation schematic diagram of the installation housing;

[0018] Figure 3 is the structural schematic diagram of the installation housing;

[0019] Figure 4 is the structural schematic diagram of the reinforcing rib;

[0020] Figure 5 is the structural schematic diagram of the capacitor fixing plate;

[0021] Figure 6 is the structural schematic diagram of the side plate;

[0022] Figure 7 is the installation schematic diagram of the PON interface;

[0023] Figure 8 is the structural schematic diagram of the stacked busbar;

[0024] Figure 9 is the schematic diagram of the internal structure of the stacked busbar;

[0025] In the figure: 1. Installation housing; 11. Side plate; 12. Capacitor fixing plate; 13. Stacked busbar fixing plate; 2. DC capacitor monomer; 3. Stacked busbar; 31. PON interface; 32. Copper busbar inlet interface; 4. Power module; 5. Capacitor fixing hole; 6. Heat dissipation groove; 7. Heat dissipation structure; 8. Reinforcing rib. Detailed implementation mode

[0026] The technical solution of the present utility model will be further described below through specific embodiments.

[0027] Embodiment

[0028] A structure of an inverter unit of an energy storage converter includes an installation housing 1, a DC capacitor monomer 2, a laminated busbar 3, and a power module 4. Capacitor fixing holes 5 are uniformly arranged on the capacitor fixing plate 12 of the installation housing 1. Fixing members are provided on each capacitor fixing hole 5, and each fixing member is connected to the corresponding DC capacitor monomer 2. A heat dissipation groove 6 is provided on the capacitor fixing plate 12 at the outer edge position of the capacitor fixing hole 5. Each DC capacitor monomer 2 forms a DC capacitor, and the DC capacitor is circuit-connected to the laminated busbar 3. The laminated busbar 3 is fixedly arranged on the installation housing 1, and the power module 4 is fixedly connected to the laminated busbar 3.

[0029] The heat dissipation groove 6 is an unclosed annular through groove.

[0030] The heat dissipation groove 6 is an annular through groove with an unclosed square structure.

[0031] The installation housing 1 includes a side plate 11, a capacitor fixing plate 12, and a laminated busbar fixing plate 13. A heat dissipation structure 7 is provided on the side plate 11. The side plate 11 is fixedly surrounded to form a rectangular frame. The capacitor fixing plate 12 is arranged at one end of the rectangular frame, and the laminated busbar fixing plate 13 is annularly arranged around the edge of the opposite end of the rectangular frame. The laminated busbar fixing plate 13 is fixedly connected to the laminated busbar 3.

[0032] The laminated busbar fixing plate 13 is an L-shaped cross-section plate body.

[0033] The heat dissipation structure 7 is an array of heat dissipation holes.

[0034] The heat dissipation structure 7 is a C-shaped groove arranged at equal intervals.

[0035] The capacitor fixing plate 12 is connected to the rectangular frame through a reinforcing rib 8.

[0036] There are three columns of pon interfaces 31 on the laminated busbar 3. Each column of pon interfaces has 9 interface points connected to the power module 4. The setting order of the interface points is PON-PON-PON from top to bottom.

[0037] A copper bar inlet interface 32 of pon is provided at the bottom edge of the laminated busbar 3.

[0038] The working principle of the present utility model is as follows, as Figure 1-2 shown, a DC capacitor monomer 2 is provided in the installation housing 1, and the DC capacitor monomer 2 is connected to the power module 4 through the laminated busbar 3 to realize the function of the inverter unit.

[0039] In order to make installation, maintenance and heat dissipation more convenient, the installation housing 1 has been structurally improved. Figure 3-6 As shown, the mounting housing 1 is fixed to the DC capacitor monomer 2 through the capacitor fixing plate 12, and a heat dissipation groove 6 is provided at the capacitor fixing hole 5 of the capacitor fixing plate 12 and the DC capacitor monomer 2 for heat dissipation. The heat dissipation groove 6 adopts an open annular groove structure, which can effectively dissipate heat while ensuring the strength of the overall frame. In this embodiment, a square structure is adopted, which can be changed to other shapes during use.

[0040] Furthermore, in order to enhance the frame strength of the mounting housing 1, reinforcing ribs 8 are used to reinforce the connection of the capacitor fixing plate 12, and a tic-tac-toe structure is used in this embodiment.

[0041] The side wall of the mounting housing 1 is fixedly surrounded by four side panels 11 to form a rectangular frame. A heat dissipation structure 7 is provided for further heat dissipation. In this embodiment, two heat dissipation structures 7 are provided for simultaneous use.

[0042] Among them, the heat dissipation holes arranged in an array as the heat dissipation structure 7 have the characteristics of high heat dissipation efficiency;

[0043] The C-shaped grooves arranged at equal intervals as the heat dissipation structure 7 can realize the heat dissipation function and also serve as a fulcrum during transportation. The operability of the device as a whole can be further improved, and the two structures can be adjusted according to actual needs.

[0044] Further, if Figure 7-9 As shown, the laminated busbar 3 is provided with a pon interface 31 for docking with the power module 4, and the interface sequence of the pon interface 31 is PON-PON-PON from top to bottom. The copper busbar inlet interface 32 provided at the bottom of the laminated busbar 3 is provided at the bottom for easy wiring management. An insulating layer is provided between the conductive plates in the laminated busbar 3 to avoid interference.

[0045] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An energy storage converter inverter unit structure, characterized in that: It includes an installation shell, a DC capacitor monomer, a laminated busbar and a power module. The capacitor fixing plate of the installation shell is evenly provided with capacitor fixing holes, each capacitor fixing hole is provided with a fixing piece, each fixing piece is connected to the corresponding DC capacitor monomer, and a heat dissipation groove is provided on the capacitor fixing plate at the outer edge position of the capacitor fixing hole. Each DC capacitor monomer constitutes a DC capacitor, the DC capacitor is connected to the laminated busbar circuit, the laminated busbar is fixedly arranged on the installation shell, and the power module is fixedly connected to the laminated busbar.

2. The energy storage converter inverter unit structure according to claim 1, characterized in that: The heat dissipation groove is an unclosed annular through groove.

3. The energy storage converter inverter unit structure according to claim 2, characterized in that: The heat dissipation groove is an annular through groove with an unclosed square structure.

4. The energy storage converter inverter unit structure according to claim 1, characterized in that: The mounting shell includes a side plate, a capacitor fixing plate and a laminated busbar fixing plate. The side plate is provided with a heat dissipation structure. The side plate is fixed to form a rectangular frame. The capacitor fixing plate is arranged at one end of the rectangular frame. The laminated busbar fixing plate is arranged in a ring around the edge of the opposite end of the rectangular frame. The laminated busbar fixing plate is fixedly connected to the laminated busbar.

5. The energy storage converter inverter unit structure according to claim 4, characterized in that: The laminated busbar fixing plate is an L-shaped cross-section plate.

6. The energy storage converter inverter unit structure according to claim 4, characterized in that: The heat dissipation structure is heat dissipation holes arranged in an array.

7. The energy storage converter inverter unit structure according to claim 4, characterized in that: The heat dissipation structure is a C-shaped slot that is arranged at equal intervals.

8. The energy storage converter inverter unit structure according to claim 4, characterized in that: The capacitor fixing plate is connected to the rectangular frame through reinforcing ribs.

9. An energy storage converter inverter unit structure according to any one of claims 1 to 8, characterized in that: There are three rows of PON interfaces on the stacked busbar, each row of PON interfaces has 9 interface points connected to the power module, and the setting order of the interface points from top to bottom is PON-PON-PON.

10. The energy storage converter inverter unit structure according to claim 9, characterized in that: A PON copper busbar inlet interface is provided at the bottom edge of the laminated busbar.

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