Cabinet type battery box for peak load shifting energy storage system

Abstract

The invention relates to the technical field of cabinet type battery boxes, in particular to a cabinet type battery box used in a peak load shifting energy storage system. Comprising a battery box body, partition plates are arranged in the battery box body and divide the interior of the battery box body into a plurality of battery bins, the battery bins are used for containing energy storage batteries, each energy storage battery comprises a battery body and a heat dissipation bin, and a water spraying assembly is arranged on the outer side of each heat dissipation bin. The water spraying assembly is used for spraying water to the surface of the heat dissipation bin, a ventilation gap is reserved between the heat dissipation bin and the battery body, a heat dissipation fan is arranged at the rear end of the heat dissipation bin, and the heat dissipation fan operates to enable external air to pass through the surface of the battery body forwards through the ventilation gap and pass through the front end of the ventilation gap to reach the space between the heat dissipation bin and the battery bin outwards. The heat is discharged backwards through the surface of the heat dissipation bin to take away the heat on the surface of the heat dissipation bin. Heat on the surfaces of the battery body and the heat dissipation bin can be rapidly taken away, the heat dissipation efficiency is remarkably improved, and local overheating is avoided.

Description

Technical Field

[0001] This invention relates to the field of cabinet-type battery box technology, specifically to a cabinet-type battery box used in peak shaving and valley filling energy storage systems. Background Technology

[0002] With the rapid development of new energy technologies, peak-shaving and valley-filling energy storage systems are increasingly widely used in power peak regulation and renewable energy consumption. As a core component of energy storage systems, the heat dissipation performance of cabinet-type battery boxes directly affects the battery's efficiency, lifespan, and safety. Traditional energy storage battery boxes mostly adopt passive air cooling or simple liquid cooling structures, which have limited heat dissipation efficiency. Especially under high-temperature and high-load conditions, they are prone to localized overheating, leading to battery performance degradation or even thermal runaway. Furthermore, existing heat dissipation designs often fail to balance heat dissipation uniformity and water resource utilization efficiency. Some systems rely on large-flow coolant or complex piping layouts, increasing structural complexity and maintenance costs. Therefore, there is an urgent need for a highly efficient, energy-saving, and compact heat dissipation solution to improve the reliability and economy of cabinet-type battery boxes in peak-shaving and valley-filling scenarios. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a cabinet-type battery box for use in peak shaving and valley filling energy storage systems.

[0004] The technical solution adopted by this invention to solve its technical problem is: a cabinet-type battery box for a peak shaving and valley filling energy storage system, comprising a battery box body, wherein a partition is provided inside the battery box body to divide the interior of the battery box body into several battery compartments, wherein the battery compartments are used to accommodate energy storage batteries, wherein the energy storage batteries include a battery body and a heat dissipation compartment, wherein a water spraying assembly is provided on the outside of the heat dissipation compartment for spraying water on the surface of the heat dissipation compartment, wherein a ventilation gap is provided between the heat dissipation compartment and the battery body, wherein a cooling fan is provided at the rear end of the heat dissipation compartment, wherein the cooling fan operates to allow external air to pass forward through the ventilation gap and over the surface of the battery body, pass outward through the front end of the ventilation gap to the space between the heat dissipation compartment and the battery compartment, and then be discharged backward through the surface of the heat dissipation compartment, thereby carrying away the heat on the surface of the heat dissipation compartment.

[0005] As an optimization, an exhaust one-way valve is configured at the front end of the ventilation gap. The exhaust one-way valve is positioned with its outlet facing the outside of the heat dissipation chamber. A partition ring is provided on the outside of the heat dissipation chamber, and the partition ring has ventilation holes. The exhaust one-way valve is located in front of the ventilation holes.

[0006] As an optimization, the partition is equipped with a plurality of receiving tubes, and the receiving tubes are equipped with water distribution nozzles in the direction of the battery compartment; The inside of the receiving tube is equipped with a water distribution pipe. The water distribution pipe has several drainage holes in the directions of 0°, 90° and 180°. When the drainage holes are connected to the water distribution nozzle, water mist is sprayed onto the outer surface of the heat dissipation chamber through the water distribution pipe and the water distribution nozzle.

[0007] As an optimization, a cover plate is hinged to the front end of the battery compartment, and a handle is provided at the front end of the battery body.

[0008] As an optimization, the inner wall of the heat dissipation chamber is provided with a support protrusion, and the battery body contacts the support protrusion, so that there is a gap between the battery body and the inner wall of the heat dissipation chamber.

[0009] As an optimization, the outer end of the water distribution pipe is connected to a water supply pipe, and the rear end of the battery compartment is equipped with a heat dissipation shell, which is equipped with an exhaust vent.

[0010] As an optimization, when the energy storage battery is placed inside the battery compartment, the front end of the heat dissipation compartment and the front end of the battery compartment are in contact and sealed.

[0011] The beneficial effects of this plan are as follows: This application combines a dual heat dissipation mechanism of air cooling and water mist spraying. Through the synergistic effect of forced ventilation by the cooling fan and the water spray component, the heat of the battery body and the surface of the heat dissipation chamber is quickly removed, which significantly improves the heat dissipation efficiency and avoids local overheating. The exhaust one-way valve works in conjunction with the ventilation holes of the partition ring to prevent hot air backflow and ensure directional airflow; the multi-angle drainage hole design of the water distribution pipe achieves uniform water mist coverage, improving heat dissipation consistency; the sealed contact between the front end of the heat dissipation chamber and the battery compartment prevents water vapor leakage and reduces the risk of short circuit; the exhaust holes of the heat dissipation shell further optimize thermal management, and the overall design takes into account both safety and reliability. Attached Figure Description

[0012] Figure 1 This is an isometric view of the present invention.

[0013] Figure 2 This is a schematic diagram of the back axis of the present invention.

[0014] Figure 3 This is a schematic diagram of the energy storage battery of the present invention from the axial side.

[0015] Figure 4 This is a schematic diagram of the back axis of the energy storage battery of the present invention.

[0016] Figure 5 This is a schematic front view of the energy storage battery of the present invention.

[0017] Figure 6 For the present invention Figure 5 A schematic diagram of the AA cross-section structure.

[0018] Figure 7 This is an axial view of the connection structure between the receiving tube and the partition of the present invention.

[0019] Figure 8 This is a schematic diagram of the water distribution pipe of the present invention.

[0020] The components include: 1. Battery box body; 2. Partition plate; 3. Battery body; 4. Heat dissipation chamber; 5. Ventilation gap; 6. Cooling fan; 7. Exhaust one-way valve; 8. Separator ring; 9. Ventilation hole; 10. Receiving pipe; 11. Water distribution nozzle; 12. Water distribution pipe; 13. Drain hole; 14. Baffle plate; 15. Handle; and 16. Rotary motor. Detailed Implementation

[0021] like Figures 1-8 As shown, a cabinet-type battery box for a peak shaving and valley filling energy storage system includes a battery box body 1. The battery box body 1 is internally provided with a partition 2, which divides the interior of the battery box body 1 into several battery compartments. The battery compartments are used to accommodate energy storage batteries. Each energy storage battery includes a battery body 3 and a heat dissipation compartment 4. A water spray assembly is provided on the outside of the heat dissipation compartment 4 to spray water on the surface of the heat dissipation compartment 4. A ventilation gap 5 is left between the heat dissipation compartment 4 and the battery body 3. A cooling fan 6 is provided at the rear end of the heat dissipation compartment 4. When the cooling fan 6 operates, it causes external air to pass forward through the ventilation gap 5, pass through the surface of the battery body 3, pass outward through the front end of the ventilation gap 5 to the space between the heat dissipation compartment 4 and the battery compartment, and then be discharged backward through the surface of the heat dissipation compartment 4, carrying away the heat on the surface of the heat dissipation compartment 4.

[0022] The ventilation gap 5 is equipped with an exhaust one-way valve 7 at its front end. The exhaust one-way valve 7 is positioned with its outlet facing the outside of the heat dissipation chamber 4. The heat dissipation chamber 4 is provided with a partition ring 8 on its outside. The partition ring 8 has ventilation holes 9. The exhaust one-way valve 7 is located in front of the ventilation holes 9.

[0023] The main body of the battery box 1 adopts a compartmentalized design, with each battery compartment independently accommodating energy storage battery units, facilitating maintenance and capacity expansion. The battery compartments are modularly separated by partitions 2, and a dual heat dissipation mechanism combining air cooling and water mist spraying is used to achieve efficient thermal management.

[0024] The cooling fan 6 drives external air to flow through the ventilation gap 5, forming forced convection; the water spray component assists in the evaporation of water mist to absorb heat, and together reduce the surface temperature of the battery body 3 and the heat dissipation chamber 4.

[0025] The battery box body 1 and the partition 2 can be made of galvanized steel or aluminum alloy, taking into account both structural strength and lightweight; the heat dissipation chamber 4 is recommended to be made of aluminum alloy to enhance thermal conductivity.

[0026] like Figure 3 and Figure 6As shown, an exhaust one-way valve 7 is configured at the front end of the ventilation gap 5. The exhaust one-way valve 7 is positioned facing the outside of the heat dissipation chamber 4. A partition ring 8 is provided on the outside of the heat dissipation chamber 4. The partition ring 8 has ventilation holes 9. The exhaust one-way valve 7 is located in front of the ventilation holes 9.

[0027] The exhaust one-way valve 7 ensures unidirectional airflow, preventing hot air backflow that could reduce heat dissipation efficiency. The ventilation holes 9 of the partition ring 8 work in conjunction with the exhaust one-way valve 7 to form a directional airflow path. The exhaust one-way valve 7 can be made of high-temperature resistant engineering plastic (such as PPS), and the diameter of the ventilation holes 9 is recommended to be 5-8mm to balance air resistance and flow rate. After the cooling fan 6 starts, airflow exits from the front end of the ventilation gap 5 through the exhaust one-way valve 7, and the ventilation holes 9 of the partition ring 8 guide the airflow to evenly cover the surface of the heat dissipation chamber 4.

[0028] like Figure 4 , Figure 7 and Figure 8 As shown, the partition 2 is equipped with a plurality of receiving tubes 10, and the receiving tubes 10 are equipped with water spray nozzles 11 in the direction of the battery compartment; The inside of the receiving tube 10 is provided with a water distribution pipe 12. The water distribution pipe 12 has several drainage holes 13 in the directions of 0°, 90° and 180°. When the drainage holes 13 are connected to the water distribution nozzle 11, water mist is sprayed onto the outer surface of the heat dissipation chamber 4 through the water distribution pipe 12 and the water distribution nozzle 11.

[0029] The water distribution pipe 12 should be made of stainless steel or corrosion-resistant PVC. The drain hole 13 should have a diameter of 1-2 mm. It is recommended to use a ceramic nozzle for the water distribution nozzle 11 to prevent clogging. After water is injected into the water supply pipe, the water distribution pipe 12 is rotated until the drain hole 13 is aligned with the water distribution nozzle 11. The water mist is then evenly sprayed onto the outer surface of the heat dissipation chamber 4 through the nozzle.

[0030] A rotary motor 16 is provided at the end of the water distribution pipe 12. The rotary motor 16 is used to drive the water distribution pipe 12 to rotate. When a storage battery is stored on one side of the partition 2, the drain hole 13 at the 12° position of the water distribution pipe is connected to the water distribution nozzle 11 at the corresponding position. When storage batteries are stored on both sides of the partition 2, the drain holes 13 at the 12° and 180° positions of the water distribution pipe are connected to the water distribution nozzle 11.

[0031] like Figure 3 and Figure 6 As shown, a baffle plate 14 is hinged to the front end of the battery compartment, and a handle 15 is provided at the front end of the battery body 3.

[0032] The cover 14 is hinged to the front of the battery compartment for easy opening and closing; the handle 15 is fixed to the front of the battery body 3 for easy pulling out of the battery module. The cover 14 is made of flame-retardant ABS plastic, and the handle 15 is made of metal (such as aluminum alloy) to withstand frequent operation.

[0033] like Figure 6 As shown, the inner wall of the heat dissipation chamber 4 is provided with a support protrusion, and the battery body 3 contacts the support protrusion, so that there is a gap between the battery body 3 and the inner wall of the heat dissipation chamber 4.

[0034] The supporting protrusion is an integrally formed aluminum alloy protrusion with the heat dissipation chamber 4, which avoids heat conduction short circuits and ensures that the battery body 3 and the inner wall of the heat dissipation chamber 4 are spaced apart to form a uniform heat dissipation space. The supporting protrusion is a raised dot or rib structure with a height of 3-5mm.

[0035] The outer end of the water distribution pipe 12 is connected to a water supply pipe, and the rear end of the battery compartment is equipped with a heat dissipation shell, which is equipped with an exhaust vent.

[0036] The water supply pipe connects to an external water source, and the exhaust vents on the heat dissipation casing optimize the exhaust of hot air. The heat dissipation casing is made of perforated steel plate, and the total area of ​​the exhaust vents must meet the airflow requirements (accounting for 30%-40% of the back panel area).

[0037] When the energy storage battery is placed inside the battery compartment, the front end of the heat dissipation compartment 4 is in contact with and sealed to the front end of the battery compartment.

[0038] The front end of the heat dissipation chamber 4 is in sealed contact with the battery compartment to prevent moisture from entering the battery body 3 area. A silicone gasket can be added to the sealing interface to ensure the sealing reliability during long-term use, avoid electrical short circuits caused by water mist, and improve system safety.

[0039] How to use: When in use, push the energy storage battery unit into the battery compartment along the guide rail, ensuring that the front end of the heat dissipation compartment 4 is in close contact with the sealing surface of the battery compartment. Connect the water supply pipe to the outer end of the water distribution pipe 12, and check the alignment of the drain hole 13 with the water distribution nozzle 11; turn on the power to the cooling fan 6. Turn on the cooling fan 6, and the outside air flows through the ventilation gap 5, carrying away the heat from the surface of the battery body 3. When the temperature sensor detects a high temperature (e.g., ≥45℃), the water mist spraying system is automatically started, and the water distribution pipe 12 rotates to spray water. The exhaust one-way valve 7 guides the hot airflow through the partition ring 8 and ventilation hole 9 to be discharged, and the water mist evaporates to accelerate heat dissipation.

[0040] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product form and style of the above-described specific embodiments. Any cabinet-type battery box for a peak shaving and valley filling energy storage system that conforms to the claims of the present invention, and any appropriate changes or modifications made thereto by a person skilled in the art, shall fall within the patent protection scope of the present invention.

Claims

1. A cabinet-type battery box for use in a peak shaving and valley filling energy storage system, characterized in that: The battery box includes a main body (1), and a partition (2) is provided inside the main body (1). The partition (2) divides the interior of the main body (1) into several battery compartments. The battery compartments are used to accommodate energy storage batteries. The energy storage batteries include a battery body (3) and a heat dissipation compartment (4). A water spraying assembly is provided on the outside of the heat dissipation compartment (4). The water spraying assembly is used to spray water on the surface of the heat dissipation compartment (4). A ventilation gap (5) is left between the heat dissipation compartment (4) and the battery body (3). A cooling fan (6) is provided at the rear end of the heat dissipation compartment (4). When the cooling fan (6) operates, it causes external air to pass forward through the ventilation gap (5) and over the surface of the battery body (3). The air then passes outward through the front end of the ventilation gap (5) and reaches the space between the heat dissipation compartment (4) and the battery compartment. The air then passes through the surface of the heat dissipation compartment (4) and is discharged backward, carrying away the heat from the surface of the heat dissipation compartment (4).

2. A cabinet-type battery box for a peak shaving and valley filling energy storage system according to claim 1, characterized in that: The ventilation gap (5) is equipped with an exhaust one-way valve (7) at the front end. The exhaust one-way valve (7) is positioned facing the outside of the heat dissipation chamber (4). The heat dissipation chamber (4) is provided with a partition ring (8) on the outside. The partition ring (8) has a ventilation hole (9). The exhaust one-way valve (7) is located in front of the ventilation hole (9).

3. A cabinet-type battery box for a peak shaving and valley filling energy storage system according to claim 1, characterized in that: The partition (2) is provided with a plurality of receiving tubes (10), and the receiving tubes (10) are provided with water spray nozzles (11) facing the battery compartment; The inside of the receiving tube (10) is provided with a water distribution pipe (12). The water distribution pipe (12) has several drainage holes (13) in the directions of 0°, 90° and 180°. When the drainage holes (13) are connected to the water distribution nozzle (11), water mist is sprayed onto the outer surface of the heat dissipation chamber (4) through the water distribution pipe (12) and the water distribution nozzle (11).

4. A cabinet-type battery box for a peak shaving and valley filling energy storage system according to claim 1, characterized in that: The front end of the battery compartment is hinged with a baffle plate (14), and the front end of the battery body (3) is provided with a handle (15).

5. A cabinet-type battery box for a peak shaving and valley filling energy storage system according to claim 1, characterized in that: The inner wall of the heat dissipation chamber (4) is provided with a support protrusion, and the battery body (3) contacts the support protrusion, so that there is a gap between the battery body (3) and the inner wall of the heat dissipation chamber (4).

6. A cabinet-type battery box for a peak shaving and valley filling energy storage system according to claim 3, characterized in that: The outer end of the water distribution pipe (12) is connected to a water supply pipe, and the rear end of the battery compartment is equipped with a heat dissipation shell, which is equipped with an exhaust vent.

7. A cabinet-type battery box for a peak shaving and valley filling energy storage system according to claim 1, characterized in that: When the energy storage battery is placed inside the battery compartment, the front end of the heat dissipation compartment (4) is in contact with and sealed to the front end of the battery compartment.

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