KR-20260064613-A - ENERGY STORAGE RACK AND FRAME STRUCTURE THEREFOR WITH VIBRATIONAL ABSORBER FUNCTION

Abstract

To improve the seismic resistance characteristics of an energy storage rack, the present invention proposes a rectangular frame structure configured to absorb and/or dampen seismic vibrations. This frame structure is suitable for an energy storage rack of an energy storage system and includes a lower frame integrally formed as a single member, said lower frame having a plurality of column brackets configured to protrude upward in a vertical direction and align columns parallel to the vertical direction. Additionally, said frame structure includes a plurality of columns mounted to a base frame via the column brackets, each column formed with a hollow profile, and an upper frame mounted on each column, said columns cooperating to provide a plurality of mounting positions configured to accommodate and mount energy storage modules. Passive cooling can be improved by placing an auxiliary device under the lower frame.

Inventors

• 투지ŸV, 안톤
• 일디림, 시난

Assignees

• 스켈레톤 테크놀로지스 게엠베하

Dates

Publication Date

20260507

Application Date

20251030

Priority Date

20241030

Claims (20)

1. In a rectangular frame structure configured to absorb and/or dampen seismic vibrations, suitable for an energy storage rack of an energy storage system, - A lower frame having a plurality of column brackets formed integrally as a single member, protruding upward in a vertical direction, and configured to align columns parallel to the vertical direction; - Mounted to the base frame via column brackets, and comprising a plurality of columns, each formed of a hollow profile; - Includes an upper frame mounted on each column, The column provides multiple mounting locations configured to accommodate and mount energy storage modules, in cooperation Frame structure.
2. In claim 1, The lower frame is integrally formed by welding or casting multiple parts. Frame structure.
3. In claim 1 or 2, Each column is attached to the lower frame and/or upper frame by multiple bolt fasteners, Frame structure.
4. In any one of claims 1 to 3, The upper frame is integrally formed as a single member, preferably formed by welding or casting multiple parts. Frame structure.
5. In any one of claims 1 to 4, At least one column bracket has a first leg portion extending parallel to the short side of the lower frame and a second leg portion extending parallel to the long side of the lower frame and preferably substantially orthogonal to the first leg portion, and The first and second leg portions each contact and/or are fixed to a column, preferably a case sheet member, Frame structure.
6. In claim 5, The column bracket is formed in the corner part of the lower frame, Frame structure.
7. In claim 5 or 6, At least one column bracket is formed at the edge portion of the lower frame, and the column bracket includes a third leg portion extending parallel to the first leg portion with a space between them, and Two column members fixed to a column bracket interlock with each other together with first and third leg portions and respective case seat members, Frame structure.
8. In any one of claims 1 to 7, At least one column comprises a case sheet member and a cover sheet member that interlock with and/or are fixed to form a column, Frame structure.
9. In claim 8, The case sheet member includes at least three leg portions that are bent into a U-shape to form the side walls and bottom of the channel, and The cover sheet member includes at least two leg portions bent into an L-shape, closes the channel to form a hollow profile, and Optionally, the case sheet member includes a flange portion that partially protrudes inward from one side wall and parallel to the channel bottom, Frame structure.
10. In any one of claims 1 to 9, At least one column formed integrally as a single member, Frame structure.
11. In claim 10, The column includes a reinforcing portion that extends parallel to the short side of the column when viewed in cross-section, Frame structure.
12. In any one of claims 1 to 11, It further includes at least one additional truss member, and This truss member is connected to the end of one column and the end or middle of another column to form an acute angle with the corresponding column, Frame structure.
13. In any one of claims 1 to 12, A plurality of high-voltage insulators are fastened to the lower frame, preferably welded, Frame structure.
14. In any one of claims 1 to 13, The device further comprises at least one installation location preferably positioned adjacent to the lower frame and configured to accommodate and install a rack control unit configured to control an auxiliary power module and/or an energy storage module configured to provide auxiliary power when the main power is cut off. Frame structure.
15. In an energy storage rack for an energy storage system, A frame structure according to any one of claims 1 to 14, and a plurality of energy storage modules configured to store and provide electrical energy, comprising The energy storage module is mounted at a mounting location provided by the frame structure, Energy storage rack.
16. In claim 15, An energy storage module includes an energy storage device including a supercapacitor, Energy storage rack.
17. In claim 15 or 16, The frame structure is the frame structure of claim 14, and At least one auxiliary power module and/or at least one rack control unit installed at the installation location, Energy storage rack.
18. In any one of claims 15 to 17, The energy storage module is manually cooled, preferably with a constant temperature gradient formed across the entire energy storage rack, Energy storage rack.
19. In claim 18, Each energy storage module comprises a plurality of energy storage cells arranged in a hexagonal dense cylindrical pattern or a rectangular pattern, Energy storage rack.
20. In claim 18 or 19, Each energy storage module includes a heat sink disposed on the outer surface of the energy storage module, preferably the front or back surface, Energy storage rack.

Description

Energy storage rack and frame structure therefor with vibration absorption function The present invention relates to a rectangular frame structure for an energy storage rack of an energy storage system. Additionally, the present invention relates to an energy storage rack. In this specification, the terms “high voltage (HV),” “low voltage (LV),” and “extra low voltage (ELV)” follow the commonly accepted definitions of the International Electrical Commission in accordance with IEC 61140:2016 “Protection against electric shock - Common aspects for installation and equipment.” Accordingly, “high voltage” means a voltage exceeding 1000V for alternating current (AC) and 1500V for direct current (DC); “low voltage” means a voltage of 1000V or less for alternating current and 1500V or less for direct current; and “extra low voltage” means a voltage of 50V or less for alternating current and 120V or less for direct current. US 2004 / 0 057 211 A1 discloses a rack having a liquid cooling system. EP 3 661 339 A1 discloses a rack modified to accommodate one or more parts. The rack comprises a backplane, a pair of side panels extending from the backplane, and internal support members on each side that accommodate and mechanically guide the initial alignment when the part is first inserted. A pair of male connectors mounted on the backplane are configured to engage with a pair of female connectors of each part to mechanically guide the final alignment of each part when the part is additionally inserted into the rack. Mechanical guidance may be provided or supplemented by a connection capable of providing liquid cooling to the rack. A system comprising a rack and a part inserted into the rack is also disclosed. These racks are also commonly referred to as 19-inch racks and are standard components for mounting, supplying, and cooling servers and other IT equipment in data centers. Recently, this type of rack has also been receiving significant attention in the energy storage sector, particularly in high-voltage systems. These racks can be used to construct large strings of high-speed charging and discharging capacitor banks that can be used in high-voltage DC systems, particularly in static synchronous compensators (STATCOMs). Due to the sensitive nature of such systems, specific requirements regarding seismic vibration damping and mitigation must be met as defined in IEEE 693-2018 “Recommendations for Seismic Design of Substations”. Embodiments of the present invention are described in more detail with reference to the attached drawings listed below. Figure 1 shows an example of an energy storage rack. Figure 2 shows an example of a lower frame. Figure 3 shows another embodiment of the lower frame. Figure 4 shows details of a column attached to a lower frame. Figure 5 shows an example of an upper frame. Figures 6 to 8 show variations of the column. Figure 9 shows another embodiment of an energy storage rack. Figure 10 shows a spectral acceleration graph of an energy storage rack. Figure 11a shows a side view of the thermal simulation results. Figure 11b shows a front view of the thermal simulation results. Figure 12 shows a horizontal cross-sectional view of the thermal simulation results. Figure 13 shows a table of the thermal simulation results. Figure 14 shows the location of the thermal sensor of the energy storage module. Figure 1 illustrates an energy storage rack (10). The energy storage rack (10) includes a frame structure (12). The frame structure (12) supports a plurality of energy storage modules (14) mounted on the frame structure at predetermined mounting positions (16). The energy storage modules (14) are electrically and mechanically connected by a plurality of busbars (18). The frame structure (12) includes a lower frame (20). The lower frame (20) supports a plurality of vertical columns (22). The columns (22) are fixed together at the top by an upper frame (24). The frame structure (12) may also include a plurality of trusses (26) mounted between different columns (22). Figure 2 illustrates the lower frame (20) in more detail. The lower frame (20) is formed integrally as a single member. The lower frame (20) has a general rectangular shape. The lower frame (20) is made by welding several sheet metal parts together. The sheet metal preferably has a thickness of 3 mm or more, preferably about 5 mm. The lower frame (20) has a long front/rear section (28, 30) and a short side section (32, 34). Additionally, the lower frame (20) includes a cross beam (36) formed parallel to the side section (32, 34) and nearly in the center. The long front/rear portions (28, 30) and the short side portions (32, 34) have a nearly C-shaped cross-section. These portions (28, 30, 32, 34) may include openings for airflow. The cross beam (36) may have a C-shaped cross section, but other cross sections similar to an I-beam are also possible, in which case the top is preferably narrower than the bottom. The lower frame (20) includes