Energy storage busbar cabinet

Abstract

The utility model discloses a kind of energy storage busbar cabinets, including cabinet body and flat open cabinet door, the cabinet body is divided into electrical component placement area, circuit breaker placement area and wiring area from high to low in turn;Electrical component placement area is electrically matched and set electrical warehouse closure plate, the electrical warehouse closure plate is opened for observing electrical component state and the opening one of operating electrical component;Circuit breaker placement area is electrically matched and set circuit breaker closure plate, the opening two for operating circuit breaker is opened on the circuit breaker closure plate, and the copper bar of circuit breaker is located on the side of the circuit breaker closure plate deviating from operating surface;Wiring area is electrically matched and set wiring area closure plate;The bottom of the cabinet body is provided with air inlet, the top of the back of the cabinet body is provided with air outlet, and filter cotton is arranged at the air inlet and the air outlet.

Description

Technical Field

[0001] This utility model relates to the field of new energy and energy storage technology, specifically to an energy storage combiner cabinet for industrial and commercial applications, which integrates power electronic conversion technology, energy storage system integration technology, structural and thermal management technology, and lithium-ion battery supporting technology. Background Technology

[0002] In the energy storage industry, the energy storage combiner cabinet is a key device connecting battery clusters and energy storage converters, and its performance directly affects the safety and operating efficiency of the energy storage system. Existing energy storage combiner cabinets typically consist of a cabinet, multiple circuit breakers, circuit breaker copper busbars, main copper busbars, and other electrical components, but their structural design has the following shortcomings: Conflict between safety protection and ease of maintenance: Electrical components are scattered, and without electrical safety protection panels, personnel may accidentally touch live parts, posing a safety hazard; if a fully enclosed structure is used, although safety can be improved, the efficiency of installation and maintenance will be greatly reduced, and operators will need to remove the panels to operate.

[0003] The wiring area design is unreasonable: the wiring area is scattered on site and the wiring position is low to the ground, which makes wiring operation inconvenient and inefficient. At the same time, there is a lack of effective observation means after wiring is completed, making it difficult to check the wiring status before operation. In addition, some designs do not have protective structures, which poses safety risks.

[0004] Poor heat dissipation: Heat inside the cabinet is difficult to dissipate effectively, and long-term operation can cause electrical components to age due to high temperature, affecting the service life and stability of the equipment.

[0005] Therefore, there is an urgent need for an energy storage combiner cabinet that can solve the above problems at the same time, while taking into account safety, ease of operation and heat dissipation performance. Utility Model Content

[0006] This utility model aims to solve the problems of existing energy storage combiner cabinets, such as the conflict between safety protection and ease of maintenance, low wiring operation efficiency and difficulty in observation, and insufficient heat dissipation performance, and provides an energy storage combiner cabinet with reasonable layout, safety and reliability, and high maintenance efficiency.

[0007] To achieve the above objectives, the following technical solution is provided: An energy storage combiner cabinet includes a cabinet body and a hinged cabinet door. The cabinet body is divided into an electrical component placement area, a circuit breaker placement area, and a wiring area from top to bottom. The electrical component placement area is equipped with an electrical component compartment sealing plate, which has an opening for observing the status of the electrical components and operating them. The circuit breaker placement area is equipped with a circuit breaker sealing plate. An opening two for operating the circuit breaker is provided on the circuit breaker sealing plate, and the copper busbar of the circuit breaker is located on the side of the circuit breaker sealing plate away from the operating surface. The wiring area is equipped with a wiring area sealing plate; the bottom of the cabinet body is provided with an air inlet, and the upper back of the cabinet body is provided with an air outlet, and filter cotton is provided at both the air inlet and the air outlet.

[0008] Preferably, the electrical component placement area is equipped with an electricity meter, a temperature and humidity sensor, and a miniature circuit breaker, and the opening corresponds to the display area of ​​the electricity meter, the display area of ​​the temperature and humidity sensor, and the operating area of ​​the miniature circuit breaker, respectively.

[0009] Preferably, the circuit breaker placement area is provided with 2-8 circuit breakers, which are divided into upper row circuit breakers and lower row circuit breakers. The lower row circuit breakers are arranged first, and the upper row circuit breakers are arranged only when the number of lower row circuit breakers exceeds 4.

[0010] Preferably, the upper input copper busbar of the upper circuit breaker is connected to the horizontal busbar, the lower circuit breaker input copper busbar of the lower circuit breaker is connected to the lower horizontal busbar, the upper horizontal busbar and the lower horizontal busbar are connected through a vertical busbar, and the three-phase input copper busbar is connected to the lower horizontal busbar.

[0011] Preferably, the lower output copper busbar of the lower circuit breaker extends to the wiring area and is fixed to the crossbeam of the cabinet body through insulating terminals; the upper output copper busbar of the upper circuit breaker extends from the back of the cabinet body to the wiring area and is fixed to the crossbeam of the cabinet body through insulators.

[0012] Preferably, the copper busbars in the wiring area include an upper circuit breaker output copper busbar, a three-phase power input copper busbar, and a lower circuit breaker output copper busbar. The upper circuit breaker output copper busbar, the three-phase power input copper busbar, and the lower circuit breaker output copper busbar are staggered in front-to-back and vertically, and the wiring sequence is from back to front, connecting the upper circuit breaker output copper busbar, the three-phase power input copper busbar, and the lower circuit breaker output copper busbar in sequence.

[0013] Preferably, the air outlet is a louver structure and is located in the upper area of ​​the back of the cabinet.

[0014] Preferably, the filter cotton is 40PPI filter cotton, and the protection level of the energy storage combiner cabinet is IP54.

[0015] Preferably, the electrical component placement area is further provided with a smoke detector, a switching power supply, and a DTU data transmission unit.

[0016] Preferably, the wiring area is further provided with cable holes, including energy storage cabinet cable outlet holes, three-phase power cable inlet holes, and energy storage cabinet auxiliary power cable inlet holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects: Balancing safety and convenience: By using partitioned enclosures with openings, the live parts of electrical components and circuit breakers are effectively isolated. At the same time, observation and basic operations can be completed without removing the enclosures, which not only meets the IP54 protection level requirements but also improves installation and maintenance efficiency.

[0018] Improved wiring efficiency and observability: The wiring area is concentrated at the bottom of the cabinet and raised in position. The copper busbars are staggered front to back and top to bottom. Combined with the wiring sequence from back to front, the difficulty of wiring operations is greatly reduced. The transparent third cover can realize online observation of the wiring status and avoid the risk of accidental contact.

[0019] Optimized heat dissipation: The bottom air inlet and the rear louvered air outlet form a convection airflow channel, combined with 40PPI filter cotton, which can effectively dissipate heat while preventing small plants and animals from entering, ensuring long-term stable operation of the equipment. Attached Figure Description

[0020] Figure 1 Schematic diagram of the internal structure of the energy storage combiner cabinet Figure 1 ; Figure 2 Schematic diagram of the internal structure of the energy storage combiner cabinet Figure 2 ; Figure 3 This is a schematic diagram of the back structure of the energy storage combiner cabinet; Figure 4 This is a schematic diagram of the cross-sectional structure of the energy storage combiner cabinet; in: 1. Cabinet body; 2. Electrical component placement area; 3. Miniature circuit breaker; 4. Electricity meter; 5. Circuit breaker placement area; 6. Upper row circuit breaker; 7. Lower row circuit breaker output copper busbar; 8. Wiring area; 9. Three-phase power input copper busbar; 10. Upper row circuit breaker output copper busbar; 11. Swing-type cabinet door; 12. Lower circuit breaker input copper busbar; 13. Lower circuit breaker input copper busbar; 14. Lower horizontal busbar; 15. Vertical busbar; 16. Upper input copper busbar; 17. Horizontal busbar; 18. Temperature and humidity sensor; 19. DTU data transmission unit; 20. Switching power supply; 21. Smoke detector; 22. Electrical compartment cover plate; 23. Circuit breaker cover plate; 24. Wiring area cover plate; 25. Air outlet; 26. Air inlet; 27. Energy storage cabinet cable outlet hole; 28. Three-phase power cable inlet hole; 29. ​​Energy storage cabinet auxiliary power cable inlet hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms center, up, down, left, right, vertical, horizontal, inner, and outer, indicating the orientation or positional relationship, are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms first, second, and third are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms installation, connection, and linking should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-4 As shown, the energy storage combiner cabinet includes a cabinet compartment, which is divided along its height into an electrical component placement area, a circuit breaker placement area, and a wiring area, as follows: Figure 1 The electrical components placement area 2, circuit breaker placement area 5, and wiring area 9 are shown.

[0025] Electrical component placement area: Equipped with an electrical component compartment cover 22, the cover 22 having a first opening for observing the status and operating the electrical components; the electrical component placement area contains an electricity meter, a temperature and humidity sensor, a miniature circuit breaker, a smoke detector, a switching power supply and a DTU, and a data transmission unit, such as... Figure 1 As shown in the diagram, the first opening corresponds to the display area of ​​the meter, the display area of ​​the temperature and humidity sensor, and the operating area of ​​the miniature circuit breaker, respectively. The live parts of the electrical components are all located behind the electrical compartment cover plate 22, and the wiring is arranged in the wire trough.

[0026] Circuit breaker placement area: Equipped with a circuit breaker cover plate 23, the circuit breaker cover plate 23 having a second opening for operating the circuit breaker, and the copper busbar of the circuit breaker located on the side of the circuit breaker cover plate 23 facing away from the operating surface; the circuit breaker placement area contains 2-8 circuit breakers, such as... Figure 1 As shown in Figure 1, the circuit breakers are arranged in upper and lower rows, with the lower row circuit breakers 7 being arranged first. When the number of lower row circuit breakers exceeds 4, the upper row circuit breakers 6 are then arranged, as shown in Figure 1.

[0027] Copper busbar connection structure: The input copper busbar of the upper circuit breaker 6 is connected to the upper horizontal busbar 17, and the input copper busbar of the lower circuit breaker 7 is connected to the lower horizontal busbar 14. The upper horizontal busbar 17 and the lower horizontal busbar 14 are connected through the vertical busbar 15, and the three-phase power input copper busbar 10 is connected to the lower horizontal busbar 14, as shown in Figure 1 as upper horizontal busbar 17, upper circuit breaker input copper busbar 16, vertical busbar 15, lower horizontal busbar 14, lower circuit breaker input copper busbar 13, and three-phase power input copper busbar; the output copper busbar of the lower circuit breaker 7 extends to the wiring area 9 and is fixed to the cabinet beam through insulating terminals; the output copper busbar of the upper circuit breaker 6 extends from the back of the cabinet to the wiring area 9 and is fixed to the cabinet beam through insulators, as shown in Figure 1. Figure 1 The middle label indicates the lower circuit breaker output copper busbar 17 and the upper circuit breaker output copper busbar 16.

[0028] Wiring area: Equipped with a transparent wiring area cover 24; The copper busbars in the wiring area 9 include an upper circuit breaker output copper busbar 11, a three-phase power input copper busbar 10, and a lower circuit breaker output copper busbar 8. The upper circuit breaker output copper busbar 11, the three-phase power input copper busbar 10, and the lower circuit breaker output copper busbar 8 are staggered in front-to-back and vertically, and the wiring sequence is from back to front, connecting the upper circuit breaker output copper busbar 11, the three-phase power input copper busbar 10, and the lower circuit breaker output copper busbar 8 in sequence; The wiring area 9 is also provided with cable holes, including an energy storage cabinet cable outlet hole 27, a three-phase power cable inlet hole 28, and an energy storage cabinet auxiliary power cable inlet hole 29.

[0029] Heat dissipation and protection structure: The bottom of the cabinet body 1 is provided with an air inlet 26 and the back is provided with an air outlet 25. The air outlet is a louver structure and is located in the upper area of ​​the back of the cabinet body 1. Both the air inlet and the air outlet are provided with 40PPI filter cotton so that the protection level of the energy storage combiner cabinet reaches IP54.

[0030] Example 1: Energy storage combiner cabinet suitable for small and medium-sized industrial and commercial energy storage systems The energy storage combiner cabinet in this embodiment is suitable for small and medium-sized industrial and commercial energy storage systems, and its specific structure is as follows: Cabinet body 1 and cabinet door 12: Made of cold-rolled steel plate, the hinged cabinet door 12 is equipped with a mechanical lock. When the cabinet door is closed, it fits tightly with the cabinet body 1, improving the overall protection performance.

[0031] Electrical component placement area 2: This area houses a single-phase electricity meter 4, a temperature and humidity sensor 18, two miniature circuit breakers 3, a smoke detector 21, a switching power supply 20, and a small DTU data transmission unit 19. The electrical compartment cover 22 is made of ABS material, with openings corresponding to the digital display area of ​​the electricity meter 4, the display panel of the temperature and humidity sensor 18, and the operating handle area of ​​the miniature circuit breaker 3. Wiring for the electrical components is neatly arranged using internal PVC cable trays.

[0032] Circuit breaker placement area 5: It contains 4 lower row circuit breakers 7. The circuit breaker cover plate 23 is made of metal and has 4 openings that match the circuit breaker operating surface. The copper busbar of the circuit breaker is located behind the cover plate and is made of T2 copper.

[0033] Copper busbar connection structure: The upper horizontal busbar 17, the lower horizontal busbar 14, and the vertical busbar 13 are connected by bolts, and the connection points are tin-plated to reduce contact resistance. The lower output copper busbar of the lower circuit breaker 7 is fixed to the crossbeam of the cabinet body 1 through insulated terminals.

[0034] Wiring Area 9: The wiring area cover plate 24 is a transparent PC board. The lower row of circuit breaker output copper busbars 8, three-phase power input copper busbars 10, and upper row of circuit breaker output copper busbars 11 are located within this area. In this embodiment, there is no upper row of circuit breakers; this is a reserved structure staggered in front-to-back and top-to-bottom positions. The wiring area has three cable holes: energy storage cabinet cable outlet hole 27, three-phase power cable inlet hole 28, and energy storage cabinet auxiliary power cable inlet hole 30. Each cable hole is equipped with a rubber sealing ring.

[0035] Heat dissipation and protection structure: The bottom of the rack body 1 is equipped with an air inlet 26 and the upper back is equipped with an air outlet 25 with a louver structure. Both the air inlet 26 and the air outlet 25 are equipped with 40PPI polyurethane filter cotton. The filter cotton is fixed by buckles for easy replacement. The overall protection level of the rack reaches IP54.

[0036] Example 2: Energy storage combiner cabinet suitable for large-scale industrial and commercial energy storage systems The energy storage combiner cabinet in this embodiment is suitable for large-scale industrial and commercial energy storage systems, and its specific structure is as follows: Cabinet body 1 and cabinet door: Made of 304 stainless steel, the hinged cabinet door 12 is equipped with an electronic combination lock, and the edge of the cabinet door is equipped with a waterproof strip to enhance the sealing and protection performance.

[0037] Electrical component placement area 2: This area houses a three-phase electricity meter 4, a temperature and humidity sensor 18, four miniature circuit breakers 3, a smoke detector 21, a high-power switching power supply 20, and an industrial-grade DTU data transmission unit 19. The electrical component compartment cover 22 is made of metal, with openings corresponding to the display areas of the electricity meter 4, the temperature and humidity sensor 18, and the operating areas of the miniature circuit breakers 3, respectively. The electrical component wiring is neatly arranged via metal cable trays.

[0038] Circuit breaker placement area 5: Contains 8 circuit breakers, with 4 lower-row circuit breakers 7 arranged in the lower row and 4 upper-row circuit breakers 6 arranged in the upper row. The circuit breaker cover plate 23 is made of metal and has an opening 2 that matches the circuit breaker operating surface. The circuit breaker copper busbar is located behind the cover plate and is made of high-conductivity T2 copper with surface anti-oxidation treatment.

[0039] Copper busbar connection structure: The input copper busbar 16 of the upper circuit breaker 6 is connected to the upper horizontal busbar 17; the lower input copper busbar 12 of the lower circuit breaker 7 is connected to the lower horizontal busbar 14; the upper horizontal busbar 17 and the lower horizontal busbar 14 are connected via the vertical busbar 13; the three-phase input copper busbar 10 is connected to the lower horizontal busbar 14; all copper busbar connections are secured with bolts and silver-plated. The lower output copper busbar of the lower circuit breaker 7 is fixed to the cabinet beam via insulated terminals; the upper output copper busbar of the upper circuit breaker 6 extends from the back of the cabinet to the wiring area 9 and is fixed via insulators.

[0040] Wiring Area 9: The wiring area cover plate 24 is made of high-strength transparent PC board. The upper circuit breaker output copper busbar 11, three-phase power input copper busbar 10, and lower circuit breaker output copper busbar 8 within this area are staggered in both front-to-back and vertical positions, and the wiring sequence is from back to front. The wiring area has multiple cable holes, including energy storage cabinet cable outlet hole 27, three-phase power cable inlet hole 28, and energy storage cabinet auxiliary power cable inlet hole 30, meeting the needs of multiple cable entry and exit points.

[0041] Heat dissipation and protection structure: The bottom of the rack body 1 is equipped with a large air inlet 26, and the upper back is equipped with a large louvered air outlet 25. Both the air inlet 26 and the air outlet 25 are equipped with 40PPI filter cotton. The filter cotton adopts a drawer-type structure that can be quickly replaced. The rack protection level reaches IP54, ensuring stable operation in complex environments.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy storage combiner cabinet, comprising a cabinet body (1) and a hinged cabinet door (12), characterized in that, The cabinet body (1) is divided into an electrical component placement area (2), a circuit breaker placement area (5), and a wiring area (9) from high to low. The electrical component placement area (2) is equipped with an electrical compartment sealing plate (22), and the electrical compartment sealing plate (22) has an opening for observing the status of the electrical components and operating the electrical components; The circuit breaker placement area (5) is equipped with a circuit breaker sealing plate (23). An opening for operating the circuit breaker is provided on the circuit breaker sealing plate (23), and the copper busbar of the circuit breaker is located on the side of the circuit breaker sealing plate (23) away from the operating surface. The wiring area (9) is equipped with a wiring area sealing plate (24); the bottom of the cabinet body (1) is provided with an air inlet (26), and the upper back of the cabinet body (1) is provided with an air outlet (25). Filter cotton is provided at both the air inlet (26) and the air outlet (25).

2. The energy storage combiner cabinet according to claim 1, characterized in that, The electrical component placement area (2) is equipped with an electricity meter (4), a temperature and humidity sensor (18) and a miniature circuit breaker (3). The opening corresponds to the display area of ​​the electricity meter (4), the display area of ​​the temperature and humidity sensor (18) and the operation area of ​​the miniature circuit breaker (3), respectively.

3. The energy storage combiner cabinet according to claim 1, characterized in that, The circuit breaker placement area (5) is equipped with 2-8 circuit breakers, which are divided into upper row circuit breakers (6) and lower row circuit breakers (7).

4. The energy storage combiner cabinet according to claim 3, characterized in that, The upper input copper busbar (16) of the upper circuit breaker (6) is connected to the upper horizontal busbar (17), the lower circuit breaker input copper busbar (13) of the lower circuit breaker (7) is connected to the lower horizontal busbar (14), the upper horizontal busbar (17) and the lower horizontal busbar (14) are connected through the vertical busbar (15), and the three-phase power input copper busbar (10) is connected to the lower horizontal busbar (14).

5. The energy storage combiner cabinet according to claim 4, characterized in that, The lower output copper busbar of the lower circuit breaker (7) extends to the wiring area (9) and is fixed to the crossbeam of the cabinet body (1) by an insulating terminal; the upper output copper busbar of the upper circuit breaker (6) extends from the back of the cabinet body (1) to the wiring area (9) and is fixed to the crossbeam of the cabinet body (1) by an insulator.

6. The energy storage combiner cabinet according to claim 1, characterized in that, The copper busbars in the wiring area (9) include the upper circuit breaker output copper busbar (11), the three-phase power input copper busbar (10), and the lower circuit breaker output copper busbar (8). The upper circuit breaker output copper busbar (11), the three-phase power input copper busbar (10), and the lower circuit breaker output copper busbar (8) are staggered in front and behind and up and down, and the wiring sequence is from back to front to connect the upper circuit breaker output copper busbar (11), the three-phase power input copper busbar (10), and the lower circuit breaker output copper busbar (8).

7. The energy storage combiner cabinet according to claim 1, characterized in that, The air outlet (25) is a louver structure and is located in the upper area of ​​the back of the cabinet.

8. The energy storage combiner cabinet according to claim 1, characterized in that, The filter cotton is 40PPI filter cotton, and the protection level of the energy storage combiner cabinet is IP54.

9. The energy storage combiner cabinet according to claim 1, characterized in that, The electrical component placement area (2) is also equipped with a smoke detector (21), a switching power supply (20), and a DTU data transmission unit (19).

10. An energy storage combiner cabinet according to claim 1, characterized in that, The wiring area (9) is also provided with cable holes, including energy storage cabinet cable outlet hole (27), three-phase power cable inlet hole (28) and energy storage cabinet auxiliary power cable inlet hole (29).

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