Distributed energy storage device

Abstract

The utility model relates to the technical field of energy storage, in particular to a distributed energy storage device, which comprises a cabinet, the cabinet is provided with a first direction and a second direction which are horizontal and perpendicular to each other, a plurality of cavities are sequentially arranged in the cabinet along the first direction, adjacent cavities are separated by vertical partition plates, and energy storage batteries are arranged in the cavities; one side face of the cabinet is opened to form a doorway, a cabinet door capable of being opened and closed is installed at the doorway of the cabinet, and a gap is formed between the partition plate and the cabinet door; the chambers at the two ends of the cabinet along the first direction are respectively provided with a heat dissipation port. Baffles capable of moving between a first position and a second position are arranged on the partition plates respectively, and at the first position, the partition plates block the gaps so as to isolate the adjacent cavities; at the second position, the partition plate is far away from the gap, so that the adjacent cavities are communicated through the gap.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a distributed energy storage device. Background Technology

[0002] In the field of power energy storage, distributed energy storage and centralized energy storage have different characteristics in terms of storage location and power supply loss. Distributed energy storage involves distributing storage batteries across various power supply scenarios (such as homes, electric vehicle charging stations, or battery swapping stations). Specifically, a distributed energy storage system typically includes multiple distributed energy storage cabinets, each containing multiple storage batteries. Distributed energy storage cabinets can provide direct power to localized power supply scenarios with a relatively small footprint, facilitating the reduction of power line length and power supply loss.

[0003] As is known, multiple distributed energy storage cabinets are combined through a power network to form a distributed energy storage system. To achieve heat dissipation within the energy storage cabinet, the internal chambers are directly connected, and cooling fans create airflow throughout the cabinet. However, this configuration makes it difficult to contain a fire at the location of the ignited battery; the fire is difficult to control within a small area in a short period, potentially leading to the destruction of the entire energy storage cabinet. Utility Model Content

[0004] This invention provides a distributed energy storage device that can solve at least one of the above-mentioned technical problems.

[0005] To address the aforementioned technical problems, one or more embodiments of this utility model provide a distributed energy storage device, including a cabinet having a first direction and a second direction that are horizontal and perpendicular to each other. Multiple chambers are sequentially arranged within the cabinet along the first direction. Adjacent chambers are separated by vertical partitions, and energy storage batteries are installed within the chambers. One side of the cabinet is open to form a doorway, and an openable and closable cabinet door is installed at the doorway, with a gap between the partition and the doorway. The chambers at both ends of the cabinet along the first direction are respectively provided with heat dissipation vents.

[0006] The partition is equipped with baffles that can move between a first position and a second position. In the first position, the baffles block the gap to isolate adjacent chambers. In the second position, the baffles move away from the gap, allowing adjacent chambers to communicate through the gap.

[0007] The beneficial effects of one or more of the above technical solutions are as follows:

[0008] In this design, the cabinet is divided into multiple chambers by partitions, each containing batteries. There are gaps between the partitions and the cabinet doors. The chambers at both ends of the cabinet along a first direction are equipped with ventilation openings. The partitions have baffles that can move between a first position and a second position. In the first position, the baffles seal the gaps; in the second position, the baffles do not seal the gaps.

[0009] This solution allows multiple chambers to be connected through gaps when heat dissipation is needed, creating a unified airflow within the cabinet and increasing its cooling efficiency. In the event of a battery fire in a single chamber, baffles can be used to seal the gaps, completely isolating adjacent chambers and containing the fire within a single chamber in a short time. This prevents the fire from spreading rapidly to multiple chambers and reduces the impact of the fire on the distributed energy storage device. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the cabinet door being opened in an embodiment of this utility model;

[0011] Figure 2 This is a schematic diagram of the cabinet door after it is closed in an embodiment of this utility model;

[0012] Figure 3 This is a side sectional view of the baffle of this utility model when it is used to seal the gap;

[0013] Figure 4 yes Figure 3 Enlarged structural diagram of section A;

[0014] Figure 5 This is a side sectional view of the baffle of this utility model when it is far away from the gap;

[0015] Figure 6 yes Figure 5 Enlarged structural diagram of section B.

[0016] In the diagram, 1 is the cabinet door; 102 is the handle; 2 is the slot; 3 is the sealing gasket; 4 is the bracket; 5 is the pivot; 6 is the fan; 7 is the chamber; 8 is the partition; 9 is the baffle; 10 is the battery; 11 is the base; 12 is the cabinet; 13 is the guide rod; 14 is the first limiting plate; 15 is the first electromagnet; 16 is the spring; 17 is the second electromagnet; and 18 is the second limiting plate. Detailed Implementation

[0017] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0018] See Figures 1-6A typical embodiment of this utility model provides a distributed energy storage device, including a cabinet 12, which has a first direction and a second direction that are horizontal and perpendicular to each other. Multiple chambers 7 are arranged sequentially along the first direction inside the cabinet 12. Adjacent chambers 7 are separated by vertical partitions 8, and energy storage batteries 10 are installed in each chamber 7. One side of the cabinet 12 is open to form a doorway, and an openable and closable cabinet door 1 is installed at the doorway. A gap 19 exists between the partition 8 and the cabinet door 1. The chambers 7 located at both ends of the cabinet 12 along the first direction are respectively provided with heat dissipation vents.

[0019] Specifically, the aforementioned cabinet 12 has a square box-like structure, with a base 11 installed at the bottom. The multiple chambers 7 are identical in shape and size. In this configuration, each chamber 7 can accommodate the same number of batteries 10. In other structural configurations, the dimensions of the multiple chambers 7 along the first direction may differ, allowing for the installation of batteries 10 of different capacities in different chambers 7. More specifically, the batteries 10 in different chambers 7 are connected by wires for synchronous power supply. The aforementioned energy storage battery 10 can be a lead-acid battery 10, or a lithium iron phosphate battery 10, or other forms, which can be configured by those skilled in the art.

[0020] The aforementioned cabinet 12 has an opening on one side to form a doorway. At this time, the square cabinet 12 has five sides, which are connected in sequence to define the inner cavity of the cabinet 12.

[0021] As one specific structural form, the cabinet door 1 is rotatably connected to the cabinet 12. The cabinet 12 is equipped with a bracket 4 and a pivot 5. The cabinet door 1 is rotatably connected to the cabinet 12 via the pivot 5. The cabinet door 1 is also equipped with a handle 102. (See also...) Figure 2 In this embodiment, the number of cabinet doors 1 is one. In other embodiments, the number of cabinet doors 1 can be two, with the ends of the two cabinet doors 1 that are far apart being rotatably connected to the cabinet 12. In this case, the two cabinet doors 1 are in a split-opening structure.

[0022] As can be seen, when the cabinet door 1 is open, there is a gap 19 between it and the partition 8. When the cabinet door 1 is closed to block the doorway, there is also a gap 19 between the cabinet door 1 and the partition 8. That is, regardless of whether the cabinet door 1 is open or closed, this gap 19 can be used to connect two adjacent chambers 7.

[0023] As mentioned above, the chambers 7 located at both ends of the rack 12 along the first direction are respectively provided with heat dissipation vents. With the gap 19 connecting two adjacent chambers 7, cooling air is generally formed inside the rack 12 extending along the first direction. With the number and size of the heat dissipation vents remaining unchanged, the heat dissipation efficiency of the rack 12 can be effectively improved.

[0024] In this embodiment, the partition 8 is provided with baffles 9 that can move between a first position and a second position. In the first position, the partition 8 blocks the gap 19 to isolate adjacent chambers 7. In the second position, the partition 8 moves away from the gap 19 so that adjacent chambers 7 can communicate through the gap 19. Specifically, the baffles 9 can be moved to block or move away from the gap 19, thereby allowing adjacent chambers 7 to communicate through the gap 19 or be completely separated.

[0025] In this embodiment, a fan 6 is installed inside the heat dissipation vent, and a cover plate capable of opening and closing the heat dissipation vent is installed on the outer wall of the cabinet 12.

[0026] Specifically, a power supply battery is installed in chamber 7, which is electrically connected to the energy storage battery 10. The power supply battery supplies power to the fan 6. Specifically, to drive the opening and closing of the cover, the cover is connected to an electric actuator or linear motor, which is fixed to the side wall of the cabinet 12. More specifically, the cover fits against the outer or inner side of the cabinet 12. When the heat dissipation vent is blocked, the projection of the vent along its opening direction falls into the cover.

[0027] In this embodiment, an elastic element and a linear drive element are installed between the baffle 9 and the partition 8. One of the elastic element and the linear drive element drives the baffle 9 to move toward the direction of blocking the gap 19, and the other drives the baffle 9 to move away from the gap 19.

[0028] In one specific structural form, the elastic element is a spring 16, and the linear drive elements are a first electromagnet 15 and a second electromagnet 17. The baffle 9 is fixed to the first limiting plate 14, and the inner wall of the cabinet 12 is fixed to the second limiting plate 18. A spring 16 is installed between the first limiting plate 14 and the second limiting plate 18, with both ends of the spring 16 abutting against the first limiting plate 14 and the second limiting plate 18, respectively. A ring-shaped first electromagnet 15 is installed on the first limiting plate 14, and a ring-shaped second electromagnet 17 is installed on the second limiting plate 18.

[0029] When the first electromagnet 15 and the second electromagnet 17 are energized and engaged, the baffle 9 moves to a second position away from the cabinet door 1, and the spring 16 is compressed to accumulate elastic potential energy, connecting the gap 19 to the adjacent chamber 7. When the first electromagnet 15 and the second electromagnet 17 are de-energized, the baffle 9 moves towards the gap 19 under the action of the spring 16, and the baffle 9, together with the partition 8, completely isolates the two adjacent chambers 7.

[0030] In other embodiments, the first and second electromagnets provide a repulsive force when energized, which drives the baffle to move toward the cabinet door and block the gap 19. The tension provided by the spring drives the baffle to move away from the gap 19. Alternatively, this solution uses an electric push rod or a linear motor to replace the spring 16 and the electromagnets. One end of the electric push rod is fixed to the baffle 9, and the other end is fixed to the inner wall of the cabinet 12.

[0031] In this embodiment, the reciprocating movement direction of the baffle 9 is parallel to the second direction, and the doorway is located on the vertical side of the cabinet 12. In other embodiments, the baffle 9 can also be moved along the first direction to block or move away from the gap 19.

[0032] In this embodiment, a guide rod 13 extending in the second direction is provided between the baffle 9 and the partition 8. When the first limiting plate 14 and the second limiting plate 18 are used as described above, one end of the guide rod is fixed to the second limiting plate 18, and the other end extends towards the gap direction. The first limiting plate 14 is provided with a guide hole for accommodating the guide rod 13.

[0033] In this embodiment, the inner side of the cabinet door 1 facing the chamber 7 has a slot 2, which is used to insert the baffle 9. Specifically, the shape and size of the slot 2 should be adapted to the cross-sectional shape and size of the baffle 9.

[0034] In this embodiment, both the partition 8 and the baffle 9 are square plates, and the slot 2 is a square groove. In other structural configurations, the baffle 9 may have a rounded corner structure at the end near the cabinet door 1, and the bottom surface of the slot 2 may also have a corresponding curved surface structure.

[0035] In this embodiment, each chamber 7 is equipped with a temperature sensor and a smoke sensor (not shown in the figure). Specifically, the energy storage device is equipped with a controller, which is used to receive signals from the temperature sensor and the smoke sensor, and the controller can send a signal of the current status of the energy storage device to a remote control terminal; the control device can also control the position of the baffle by controlling the on and off of the first electromagnet and the second electromagnet.

[0036] In this embodiment, a sealing gasket 3 is provided on the inner side of the cabinet door 1 to achieve a seal between the cabinet 12 and the cabinet door 1. For details, see [link to documentation]. Figure 1 The sealing gasket 3 here is U-shaped, and the U-shaped sealing gasket 3 can be fitted against the side wall of the opening of the cabinet 12. Preferably, the sealing gasket 3 here is a rubber gasket or a silicone gasket.

[0037] Working principle: When using this device, in the absence of a fire, the baffle 9 moves to the second position, and the heat dissipation vent, together with the gap 19, forms a cooling airflow in the cabinet 12, allowing the entire cabinet 12 to dissipate heat synchronously. When the temperature sensor and smoke sensor detect that the temperature of the cabinet 12 is too high, indicating a fire: the baffle 9 moves to the first position to seal the gap 19. The baffle 9, together with the partition 8, separates the fire into a separate chamber 7, preventing the fire from spreading rapidly and buying more time for subsequent firefighting efforts.

[0038] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0039] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A distributed energy storage device, characterized in that, The device includes a cabinet having a first direction and a second direction that are horizontal and perpendicular to each other. Multiple chambers are arranged sequentially along the first direction inside the cabinet. Adjacent chambers are separated by vertical partitions. Energy storage batteries are installed in the chambers. One side of the cabinet is open to form a doorway, and the cabinet is equipped with an openable and closable cabinet door at the doorway. There is a gap between the partition and the cabinet door. The chambers at both ends of the cabinet along the first direction are respectively provided with heat dissipation vents. The partition is provided with baffles that can move between a first position and a second position. In the first position, the partition blocks the gap to isolate the adjacent chambers. In the second position, the partition is away from the gap, so that adjacent chambers are connected through the gap.

2. The distributed energy storage device according to claim 1, characterized in that, A fan is installed inside the heat dissipation vent, and a cover plate capable of opening and closing the heat dissipation vent is installed on the outer wall of the cabinet.

3. The distributed energy storage device according to claim 1, characterized in that, An elastic element and a linear drive element are installed between the baffle and the partition. One of the elastic element and the linear drive element drives the baffle to move in the direction of blocking the gap, and the other drives the baffle to move away from the gap.

4. The distributed energy storage device according to claim 1, characterized in that, The reciprocating movement direction of the baffle is parallel to the second direction, and the doorway is located on the vertical side of the cabinet.

5. The distributed energy storage device according to claim 4, characterized in that, A guide rod extending in a second direction is provided between the baffle and the partition.

6. The distributed energy storage device according to claim 4, characterized in that, The cabinet door has a slot on its inner side facing the chamber, which is used to insert a baffle.

7. The distributed energy storage device according to claim 6, characterized in that, Both the partition and the baffle are square plates, and the slot is a square groove.

8. The distributed energy storage device according to claim 1, characterized in that, Each chamber is equipped with a temperature sensor and a smoke sensor.

9. The distributed energy storage device according to claim 1, characterized in that, The inner side of the cabinet door is equipped with a sealing gasket to achieve a seal between the cabinet and the cabinet door.

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