Lithium ion energy storage cabinet for AGC frequency modulation

Abstract

The utility model relates to lithium ion energy storage cabinet technical field, concretely for a kind of lithium ion energy storage cabinet for AGC frequency modulation, including cabinet, and the top plate of cabinet is provided with heat dissipation component and dust removal component, the heat dissipation component includes fan shell, fan assembly, connecting ring and support, the fan shell is connected with top plate, the outer wall of connecting ring is connected with fan shell, dust removal component and fan assembly are arranged in connecting ring inside from top to bottom;The dust removal component includes filter screen and filter tow arranged from top to bottom;The backboard inside of cabinet is provided with sealing fixed component on upper portion.The utility model actively inhales air by fan assembly, after double filtration by filter screen and filter tow, again by screen plate uniform direction, can effectively take away energy storage cabinet internal heat, ensure that equipment is stably operated under suitable temperature, simultaneously, purified air enters cabinet, reduce the influence of dust and other impurities to internal electronic component, reduce failure incidence, prolong equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion energy storage cabinet technology, and in particular to a lithium-ion energy storage cabinet for AGC frequency modulation. Background Technology

[0002] A lithium-ion energy storage cabinet for AGC frequency regulation is a key piece of equipment used in the frequency regulation link of automatic generation control (AGC) in power grids. It uses lithium-ion batteries as the energy storage medium and mainly consists of a battery system, a power conversion system, a control system, a thermal management system, and a safety protection system. It plays an important role in maintaining the stability of power grid frequency.

[0003] Currently, lithium-ion energy storage cabinets typically use fans to force airflow, which accelerates the heat transfer rate and can remove the heat generated inside the cabinet in a timely manner, keeping the cabinet within a relatively low temperature range and helping to maintain the normal operation of the equipment.

[0004] Although the fan can remove the heat generated inside the energy storage cabinet, it also brings dust from the surrounding air into the cabinet during operation. Over time, the dust accumulates on electronic components and heat dissipation channels, affecting heat dissipation and the performance of electronic components, and may even cause short circuits and other malfunctions. To address these issues, a lithium-ion energy storage cabinet for AGC frequency modulation is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lithium-ion energy storage cabinet for AGC frequency modulation, which aims to improve the problem that the existing technology cannot effectively intercept dust in the air.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A lithium-ion energy storage cabinet for AGC frequency modulation includes a cabinet body. A heat dissipation assembly and a dust removal assembly are disposed on the top plate of the cabinet body. The heat dissipation assembly includes a fan housing, a fan assembly, a connecting ring, and a bracket. The fan housing is connected to the top plate, and the outer wall of the connecting ring is connected to the fan housing. The dust removal assembly and the fan assembly are disposed from top to bottom inside the connecting ring. The dust removal assembly includes a filter screen and filter cotton disposed from top to bottom. A sealing and fixing assembly is disposed on the inner side of the back plate of the cabinet body. As a further description of the above technical solution: The filter screen, filter cotton, and fan assembly are all connected to the inner wall of the connecting ring via a bracket. As a further description of the above technical solution: A sieve plate is also provided on the inner side of the connecting ring, and the sieve plate is located above the filter screen; As a further description of the above technical solution: The heat dissipation assembly also includes multiple heat sinks, which are fixed to the side panels inside the cabinet. As a further description of the above technical solution: The sealing and fixing assembly includes a fixing ring, which is rotatably mounted on the back plate. An elastic ring is fixedly connected to the inner side of the fixing ring, and the elastic ring is in contact with the component to be sealed. As a further description of the above technical solution: The inner side of the fixing ring is also provided with multiple elastic components. The elastic components include elastic rods and arc-shaped locking blocks. The curved surface of the arc-shaped locking block is the inner side of the arc-shaped locking block. One end of the elastic rod is connected to the inner wall of the fixing ring, and the other end is connected to the outer side of the arc-shaped locking block. The inner side of the arc-shaped locking block is engaged with the component to be fixed. As a further description of the above technical solution: The cabinet has multiple shelves on its inner side, and the shelves are equipped with anti-slip pads. As a further description of the above technical solution: The cabinet includes multiple movable door panels, and the outer side of each door panel is provided with a rubber layer; As a further description of the above technical solution: A sealing layer is provided on the inner side of the door panel; As a further description of the above technical solution: The side panel of the cabinet is provided with multiple mounting holes, and dustproof plates are installed at the mounting holes.

[0007] This utility model has the following beneficial effects: 1. In this utility model, air is actively drawn in by the fan assembly, filtered twice by the filter screen and filter cotton, and then evenly guided by the sieve plate. This effectively removes the heat inside the energy storage cabinet, ensuring that the equipment operates stably at a suitable temperature. At the same time, the purified air entering the cabinet reduces the impact of dust and other impurities on the internal electronic components, lowers the failure rate, and extends the service life of the equipment.

[0008] 2. In this utility model, the elastic ring contacts the internal components, providing a sealing effect and effectively preventing external factors such as dust and moisture from corroding the internal components. This is crucial for ensuring the normal operation of electronic components and can prevent short circuits caused by moisture ingress. The fixing structure composed of the spring push rod and the arc-shaped locking block can firmly fix the internal components, preventing them from loosening or shifting due to vibration during transportation or operation, ensuring stable electrical connections between components, and avoiding malfunctions caused by poor connections. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a lithium-ion energy storage cabinet for AGC frequency modulation proposed in this utility model. Figure 2 This is a schematic diagram of the connecting ring of a lithium-ion energy storage cabinet for AGC frequency modulation proposed in this utility model; Figure 3 This is a schematic diagram of the fan assembly of a lithium-ion energy storage cabinet for AGC frequency modulation proposed in this utility model. Figure 4 This is a schematic diagram of the observation window of a lithium-ion energy storage cabinet for AGC frequency modulation proposed in this utility model. Figure 5 This is a schematic diagram of the structure of an anti-slip pad for a lithium-ion energy storage cabinet used for AGC frequency modulation, as proposed in this utility model. Figure 6 This is a schematic diagram of the arc-shaped card block of a lithium-ion energy storage cabinet for AGC frequency modulation proposed in this utility model.

[0010] Legend: 1. Housing; 2. Rubber layer; 3. Observation window; 4. Handle; 5. Screen plate; 6. Fan housing; 7. Dustproof plate; 8. Hinge; 9. Control box; 10. Connecting ring; 11. Heat sink; 12. Anti-slip pad; 13. Layered board; 14. Filter screen; 15. Filter cotton; 16. Bracket; 17. Fan assembly; 18. Door panel; 19. Sealing layer; 20. Elastic ring; 21. Threaded ring; 22. Spring push rod; 23. Fixing ring; 24. Arc-shaped locking block. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a lithium-ion energy storage cabinet for AGC frequency modulation, comprising a cabinet body 1. A heat dissipation assembly and a dust removal assembly are provided on the top plate of the cabinet body 1. The heat dissipation assembly includes a fan housing 6, a fan assembly 17, a connecting ring 10, and a bracket 16. The fan housing 6 is connected to the top plate, and the outer wall of the connecting ring 10 is connected to the fan housing 6. The dust removal assembly and the fan assembly 17 are arranged from top to bottom inside the connecting ring 10. The dust removal assembly includes a filter screen 14 and a filter cotton 15 arranged from top to bottom. A sealing and fixing assembly is provided on the inner side of the back plate of the cabinet body 1. The filter screen 14, the filter cotton 15, and the fan assembly 17 are all connected to the inner wall of the connecting ring 10 via the bracket 16. A sieve plate 5 is also provided on the inner side of the connecting ring 10, located above the filter screen 14. The heat dissipation assembly also includes multiple heat sinks 11, which are fixed to the side plates inside the cabinet body 1.

[0013] The AGC frequency-modulated lithium-ion energy storage cabinet achieves efficient heat dissipation, dust protection, and stable equipment fixation through the synergistic effect of heat dissipation components, dust removal components, and sealing and fixing components, ensuring the safe operation of lithium-ion batteries under AGC frequency modulation conditions.

[0014] When the energy storage cabinet participates in AGC frequency regulation, the heat dissipation components are activated when the battery charging and discharging generates heat. The fan assembly 17, supported by the connecting ring 10 and the bracket 16, operates, creating negative pressure to drive air circulation. This draws outside air into the fan housing 6, where it first passes through the sieve plate 5 to intercept large particles, and then through a dust removal assembly composed of the filter screen 14 and filter cotton 15 to filter medium and fine dust particles before entering the cabinet. The purified air exchanges heat with the battery and other heat-generating components before being exhausted. Simultaneously, the heat sink 11 on the inner side panel of the cabinet assists in absorbing residual heat and conducting it to the outside, achieving efficient cooling. Furthermore, the sealing and fixing components on the inner side of the cabinet's back panel not only seal gaps to prevent unfiltered air from seeping in but also firmly fix the internal equipment, preventing vibration-induced malfunctions and ensuring stable operation of the energy storage cabinet under AGC frequency regulation conditions.

[0015] Reference Figure 2 , Figure 4 and Figure 6 The sealing and fixing assembly includes a fixing ring 23, which is rotatably mounted on the back plate. An elastic ring 20 is fixedly connected to the inner side of the fixing ring 23, and the elastic ring 20 contacts the part to be sealed. The inner side of the fixing ring 23 is also provided with multiple elastic components, including an elastic rod 22 and an arc-shaped locking block 24. The curved surface of the arc-shaped locking block 24 is the inner side of the arc-shaped locking block 24. One end of the elastic rod 22 is connected to the inner wall of the fixing ring 23, and the other end is connected to the outer side of the arc-shaped locking block 24. The inner side of the arc-shaped locking block 24 engages with the part to be fixed.

[0016] The fixing ring 23 is rotatably mounted on the back panel of the cabinet, and its position can be adjusted by rotation to accommodate different components. For sealing, the elastic ring 20 inside the fixing ring 23 makes tight contact with the component to be sealed, using the elastic deformation of the elastic ring 20 to fill gaps and prevent external dust and moisture from seeping in through the gap between the component and the cabinet. For fixing, multiple elastic components inside the fixing ring 23 function. One end of the elastic rod is connected to the inner wall of the fixing ring 23, and the other end is connected to the outer side of the arc-shaped locking block 24. When the component to be fixed is inserted, the arc-shaped locking block 24, under the elastic force of the elastic rod, tightly engages with the component with its inner curved surface, firmly fixing the component through elastic force and preventing displacement during the operation or movement of the energy storage cabinet. Through the synergy of sealing and fixing functions, the overall system ensures stable operation of the components inside the cabinet and a clean internal environment.

[0017] Reference Figure 1 , Figure 2 and Figure 5 The cabinet 1 has multiple shelves 13 on its inner side, and anti-slip pads 12 are installed on the shelves 13. The cabinet 1 includes multiple movable doors 18, and the outer side of the doors 18 is provided with a rubber layer 2. The inner side of the doors 18 is provided with a sealing layer 19. The side panels of the cabinet 1 have multiple mounting holes, and dustproof plates 7 are installed at the mounting holes.

[0018] In terms of internal load-bearing capacity, multiple layered panels 13 on the inner side of the cabinet divide the internal space into multiple areas, facilitating the categorized placement of different equipment components. Anti-slip pads 12 on the layered panels 13 increase friction to prevent equipment from sliding or shifting during operation or movement of the energy storage cabinet, ensuring stable component placement. Regarding door protection and sealing, multiple movable door panels 18 can be opened and closed flexibly, facilitating equipment inspection and maintenance. The rubber layer 2 on the outer side of the door panel 18 cushions the impact force when closing, reducing wear and tear on the cabinet and door panel 18. The sealing layer 19 on the inner side of the door panel 18 fits tightly against the cabinet after closing, sealing the gap between the door panel 18 and the cabinet, preventing external dust and moisture from entering the cabinet. For side panel dust prevention, the mounting openings on the cabinet side panels can be used for wiring or auxiliary ventilation. The dustproof panels 7 at the mounting openings effectively intercept external dust from entering the cabinet through the mounting openings, further ensuring a clean environment inside the cabinet. The coordinated action of these structures provides reliable protection for the operation of the equipment inside the energy storage cabinet.

[0019] Working principle: First, the staff places each piece of equipment on the corresponding layered plate 13. The anti-slip pads 12 laid on the surface of the layered plate 13 increase the static friction between the equipment and the layered plate 13, effectively preventing the equipment from sliding or shifting during the vibration of the energy storage cabinet during transportation, handling or operation, and ensuring the accuracy of the initial installation position of the equipment.

[0020] Positioning and adjustment are achieved by rotating the fixing ring 23 mounted on the cabinet back panel. The fixing ring 23 can rotate flexibly around the rotation axis of the back panel until its inner elastic component aligns with the part to be fixed. At this time, multiple elastic components inside the fixing ring 23 will function: the elastic rod is in a slightly compressed state in its natural state, pushing the arc-shaped locking block 24 inward; when the part to be fixed is embedded between the arc-shaped locking blocks 24, the inner curved surface of the arc-shaped locking block 24 fits against the outer wall of the part, and the elastic rod, through continuous elastic force, firmly locks the arc-shaped locking block 24 into the part, achieving self-adaptive fixing. At the same time, the elastic ring 20 inside the fixing ring 23 is in close contact with the edge of the part to be sealed, and fills the gap between the part and the fixing ring 23 through its own elastic deformation, initially blocking the intrusion path of dust and moisture.

[0021] After the equipment installation is completed, close the multiple movable doors 18 on the cabinet. The doors 18 rotate via hinges 8 for easy opening and closing. The rubber layer 2 on the outer side of the door 18 contacts the cabinet frame when the door 18 is closed, buffering the impact force at the moment of closing and reducing mechanical wear between the door 18 and the cabinet. On the other hand, it fills the gap between the door 18 and the frame through slight deformation, forming the first line of defense. The sealing layer 19 on the inner side of the door 18 is compacted after the door 18 is closed, tightly adhering to the side wall of the cabinet, forming the second sealing barrier, effectively preventing outside air, dust, and rainwater from entering the cabinet through the gaps in the door 18.

[0022] When the energy storage cabinet is connected to the power grid and participates in AGC frequency regulation, the lithium-ion battery rapidly charges and discharges according to the grid frequency command, generating a large amount of Joule heat during the process. At this time, the heat dissipation and dust removal system starts and works in conjunction. The fan assembly 17, fixed inside the connecting ring 10, starts, and the fan blades rotate at high speed to generate negative pressure suction, forming a directional airflow path that allows outside air to enter from the fan housing 6 opening on the top plate of the cabinet, flow through the dust removal assembly and the internal space of the cabinet in sequence, and finally be discharged from the exhaust port at the bottom or side plate of the cabinet, forming a complete ventilation cycle. After the outside air enters the fan housing 6, it first passes through the sieve plate 5 at the top inside the connecting ring 10, which intercepts large particles of impurities in the air. The air that passes through the sieve plate 5 continues to flow downwards, passing through the filter screen 14 to filter medium-sized dust particles; finally, it flows through the filter cotton 15, which intercepts fine dust particles and some moisture, ensuring that the air entering the cabinet meets the cleanliness requirements. After the purified cold air enters the cabinet, it comes into full contact with the heat-generating components such as the battery module and BMS, absorbing the heat generated by them and increasing in temperature to become hot air. The hot air is then quickly expelled from the cabinet under the negative pressure driven by the fan assembly 17, carrying away the heat from the core heat source. At the same time, multiple heat sinks 11 fixed to the inner side panel of the cabinet absorb the residual heat in the air inside the cabinet through heat conduction, and then transfer the heat to the cabinet side panel through the large surface area of ​​the heat sinks 11, and finally dissipate it to the external environment. This forms a composite heat dissipation system of active ventilation and passive heat conduction, effectively controlling the temperature inside the cabinet within the optimal operating range of the lithium-ion battery, avoiding the risk of battery capacity decay, shortened life or thermal runaway due to high temperature, and ensuring the continuous and stable operation of the energy storage cabinet under the dynamic operating conditions of AGC frequency regulation.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium-ion energy storage cabinet for AGC frequency modulation, characterized in that, The cabinet (1) includes a heat dissipation assembly and a dust removal assembly on its top plate. The heat dissipation assembly includes a fan housing (6), a fan assembly (17), a connecting ring (10), and a bracket (16). The fan housing (6) is connected to the top plate, and the outer wall of the connecting ring (10) is connected to the fan housing (6). The dust removal assembly and the fan assembly (17) are arranged from top to bottom inside the connecting ring (10). The dust removal assembly includes a filter screen (14) and a filter cotton (15) arranged from top to bottom. A sealing and fixing assembly is provided on the inner side of the back plate of the cabinet (1).

2. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 1, characterized in that: The filter screen (14), filter cotton (15) and fan assembly (17) are all connected to the inner wall of the connecting ring (10) via a bracket (16).

3. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 1, characterized in that: A sieve plate (5) is also provided on the inner side of the connecting ring (10), and the sieve plate (5) is located above the filter screen (14).

4. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 1, characterized in that: The heat dissipation assembly also includes multiple heat sinks (11), which are fixed to the side panels inside the cabinet (1).

5. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 1, characterized in that: The sealing and fixing assembly includes a fixing ring (23), which is rotatably mounted on the back plate. An elastic ring (20) is fixedly connected to the inner side of the fixing ring (23), and the elastic ring (20) is in contact with the component to be sealed.

6. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 5, characterized in that: The inner side of the fixing ring (23) is also provided with a plurality of elastic components, the elastic components including an elastic rod (22) and an arc-shaped locking block (24), with the curved surface of the arc-shaped locking block (24) as the inner side of the arc-shaped locking block (24), one end of the elastic rod (22) is connected to the inner wall of the fixing ring (23), and the other end is connected to the outer side of the arc-shaped locking block (24), and the inner side of the arc-shaped locking block (24) is engaged with the component to be fixed.

7. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 6, characterized in that: Multiple layered panels (13) are provided on the inner side of the cabinet (1), and anti-slip pads (12) are provided on the layered panels (13).

8. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 1, characterized in that: The cabinet (1) includes multiple movable door panels (18), and the outer side of the door panels (18) is provided with a rubber layer (2).

9. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 8, characterized in that: A sealing layer (19) is provided on the inner side of the door panel (18).

10. A lithium-ion energy storage cabinet for AGC frequency modulation according to claim 1, characterized in that: The cabinet (1) has multiple mounting ports on its side panel, and a dustproof plate (7) is provided at each mounting port.

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