Distributed energy storage device
By setting up a heat exchanger and a cooling box on the side of the energy storage cabinet, using water to cool air and water to cool down, the problem of high heat dissipation cost of the energy storage device in high temperature environments is solved, and a shared cooling system for multiple cabinets is realized, reducing the overall cost.
Patent Information
- Application Number
- CN202421925760.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing distributed energy storage devices have high heat dissipation costs in high temperature environments, and when multiple cabinets are connected in parallel, each cabinet needs an independent heat dissipation system, resulting in an increase in cost.
A heat exchanger box is installed on one side of the energy storage cabinet, and a first heat exchanger is installed in the heat exchanger box. The cooling air is cooled by using water with a lower temperature. At the same time, the water entering the first heat exchanger is cooled through the cooling box, and a cooling system is used to meet the heat dissipation needs of multiple energy storage cabinets.
It effectively reduces the heat dissipation cost of energy storage cabinets, ensures that the heat dissipation needs are met in high-temperature environments, and saves the overall cost of the heat dissipation system.
Smart Images
Figure CN223194460U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of distributed energy storage devices, and in particular to a distributed energy storage device. Background Art
[0002] With advances in energy storage technology and evolving demand, distributed energy storage technology is becoming increasingly widespread in power systems and is an inevitable trend in future grid development. Distributed energy storage devices offer advantages such as flexible access locations and are currently primarily used in medium and low voltage power systems, distributed generation, microgrids, and behind-the-meter applications. Distributed energy storage takes various forms, with electrochemical energy storage, or batteries, currently the dominant form. Typically, multiple batteries are installed in an energy storage cabinet. These batteries are charged during low-demand periods and discharged during peak periods. Both charging and discharging generate significant heat. To dissipate this heat within the cabinet, a heat sink is required. For cabinets operating in higher ambient temperatures, this heat sink also needs to cool the air, typically through a direct expansion system. In some applications with high energy storage requirements, multiple cabinets are often operated in parallel. However, installing a direct expansion system in each cabinet would be costly and require improvement. Utility Model Content
[0003] The purpose of the utility model is to provide a distributed energy storage device to address the deficiencies in the existing technology.
[0004] To achieve the above-mentioned objectives, the present invention provides a distributed energy storage device, comprising a plurality of energy storage cabinets, wherein an air outlet is provided on the upper side of the energy storage cabinet, a heat dissipation fan is provided inside the air outlet, a heat exchange box is provided on one side of each energy storage cabinet, an air inlet is provided on the heat exchange box, and an air supply outlet is provided between the heat exchange box and the side of the energy storage cabinet, a first heat exchanger is provided in the heat exchange box, the first heat exchanger is arranged between the air inlet and the air supply outlet, the first heat exchanger comprises a water inlet pipe, a water outlet pipe and a heat exchange pipe connected between the water inlet pipe and the water outlet pipe, the water inlet pipe is connected to the water outlet of the water pump through a water diverter valve, and the water inlet of the water pump is connected to a water source.
[0005] Furthermore, the water inlet and the water outlet of the water pump are respectively connected to a water inlet valve and a water outlet valve.
[0006] Furthermore, the water source is a water tank, and a cooling box is connected between the water outlet of the water pump and the water diversion valve. The cooling box includes a box body, and a compressor is provided in the box body. The air outlet of the compressor is connected to one end of the condenser, and the other end of the condenser is connected to the second heat exchanger through an expansion valve. The second heat exchanger is connected to the air inlet of the compressor, and the water pump and the water diversion valve are respectively connected to the second heat exchanger.
[0007] Furthermore, the condenser is an air-cooled condenser, an air duct is provided in the box body, the condenser is arranged in the air duct, an air inlet flange and an air outlet flange are provided at both ends of the air duct, and a fan is provided inside the air duct.
[0008] Furthermore, the fan is arranged between the condenser and the air outlet flange.
[0009] Furthermore, a plurality of supporting beams are provided on the lower side of the heat exchange box, and the air inlet is arranged on the lower side of the heat exchange box.
[0010] Furthermore, air filters are provided on the inner sides of the air inlet and the air inlet flange.
[0011] Furthermore, a plurality of water baffles are provided at inclined intervals on the inner side of the air supply port.
[0012] Beneficial effects: The utility model arranges a heat exchange box on one side of the energy storage cabinet and arranges a first heat exchanger in the heat exchange box. By passing low-temperature water into the first heat exchanger, the cooling air entering the energy storage cabinet is cooled, thereby avoiding the failure to meet the heat dissipation demand when the ambient temperature is high; by arranging a cooling box to cool the water entering the first heat exchanger, the heat dissipation effect of the energy storage cabinet is ensured; one cooling box is used to meet the needs of multiple energy storage cabinets, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of a distributed energy storage device according to an embodiment of the present utility model;
[0014] Figure 2 It is a schematic diagram of a distributed energy storage device according to an embodiment of the present utility model;
[0015] Figure 3 It is a partial cross-sectional structural diagram of the distributed energy storage device implemented by the present utility model. DETAILED DESCRIPTION
[0016] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.
[0017] like Figures 1 to 3As shown, an embodiment of the present invention provides a distributed energy storage device, including multiple energy storage cabinets 1, an air outlet 2 is provided on the upper side of the energy storage cabinet 1, a rain shield 3 is provided on the outside of the air outlet 2, and a heat dissipation fan is provided on the inside of the air outlet 2. The heat dissipation fan can be one or more. A plurality of battery packs connected in parallel are provided in the energy storage cabinet 1, and each battery pack includes a plurality of batteries connected in series. A heat exchange box 4 is provided on one side of each energy storage cabinet 1, and a door can be provided on the rear side of the heat exchange box 4 to facilitate internal installation and maintenance. An air inlet 5 is provided on the heat exchange box 4, and an air supply port 6 is provided on one side of the heat exchange box 4 and the energy storage cabinet 1. A first heat exchanger 7 is provided in the heat exchange box 4, and the first heat exchanger 7 is arranged between the air inlet 5 and the air supply port 6. The first heat exchanger 7 includes an inlet pipe 71 and an outlet pipe 72, as well as a heat exchange pipe 73 connected between the inlet pipe 71 and the outlet pipe 72. The inlet pipe 71 and the outlet pipe 72 extend through the heat exchange box 4 and extend outside. The heat exchange pipe 73 is fixed to the frame 74. The inlet pipe 71 and the outlet pipe 72 are both arranged outside the frame 74. The outside of the heat exchange pipe 73 is provided with multiple heat exchange fins to improve the heat exchange effect. To ensure that the air entering the air supply port 6 flows uniformly through the first heat exchanger 7, a partition 8 can be installed between the inner side of the frame 74 and the inner side of the heat exchange box 4. The partition 8 is n-shaped. The air flowing through the first heat exchanger 7 can enter the air supply port 6 through the through hole in the middle of the partition 8. The inlet pipe 71 is connected to the water outlet of the water pump 10 through the water diverter valve 9. The water inlet of the water pump 10 is connected to the water source.
[0018] The water source can be a groundwater source, a river, a lake, or tap water. The water flowing out of the outlet pipe 72 can flow back into the river, lake, or other water-using areas. The water source is more preferably a water tank. The water flowing out of the outlet pipe 72 can flow back into the water tank for reuse. The water inlet and outlet of the water pump 10 are respectively connected to an inlet valve 11 and an outlet valve 12. To ensure a cooling effect, a cooling box is further connected between the water outlet of the water pump 10 and the water diverter valve 9. The cooling box includes a housing 13, in which a compressor 14 is disposed. The air outlet of the compressor 14 is connected to one end of a condenser 15. The other end of the condenser 15 is connected to a second heat exchanger 17 via an expansion valve 16. The second heat exchanger 17 is connected to the air inlet of the compressor 14. The water pump 10 and the water diverter valve 9 are respectively connected to the second heat exchanger 17. The refrigerant compressed by the compressor 14 is cooled in the condenser 15, passes through the expansion valve, and enters the second heat exchanger 17 to cool the water pumped in by the water pump 10. The cooled water then flows through the water diversion valve 9 to the first heat exchanger 7 in each heat exchange box 4. It should be noted that the compressor 14 can be set to start working when the ambient temperature or the temperature of the water entering the first heat exchanger 7 or the temperature in the energy storage cabinet 1 is higher than the set threshold. In addition, if there is a demand for hot water supply on site, the above-mentioned condenser 15 can use a water-cooled condenser. Otherwise, it is preferred to use an air-cooled condenser. An air duct 18 is provided in the box body 13, and the condenser 15 is provided in the air duct 18. An air inlet flange 19 and an air outlet flange 20 are provided at both ends of the air duct 18, and a fan 21 is provided inside the air duct 18. The fan 21 is preferably provided between the condenser 15 and the air outlet flange 20.
[0019] Several support beams 22 are provided on the lower side of the heat exchanger box 4, ensuring that the lower side of the heat exchanger box 4 is spaced from the ground. The air inlet 5 is preferably located on the lower side of the heat exchanger box 4. This placement prevents water from accumulating inside the heat exchanger box 4 in the event of a leak in the first heat exchanger 7, allowing it to flow directly out of the air inlet 5. To prevent water from directly spraying into the energy storage cabinet 1 in the event of a leak in the first heat exchanger 7, multiple water baffles 23 are provided at oblique intervals on the inner side of the air supply port 6. To filter the air entering the heat exchanger box 4 and the housing 13, air filters are provided on the inner side of the air inlet 5 and the air inlet flange 19. The air filters may be non-woven fabric filters.
[0020] The above description is merely a preferred embodiment of the present invention. It should be noted that for those skilled in the art, any other aspects not specifically described are considered prior art or common knowledge. Improvements and modifications may be made without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention.
Claims
1. A distributed energy storage device, characterized in that: It includes multiple energy storage cabinets, each of which is provided with an air outlet on the upper side of the energy storage cabinet, a heat dissipation fan is provided inside the air outlet, a heat exchange box is provided on one side of each energy storage cabinet, an air inlet is provided on the heat exchange box, and an air supply outlet is provided between the heat exchange box and the side of the energy storage cabinet, a first heat exchanger is provided in the heat exchange box, the first heat exchanger is arranged between the air inlet and the air supply outlet, the first heat exchanger includes a water inlet pipe, a water outlet pipe and a heat exchange pipe connected between the water inlet pipe and the water outlet pipe, the water inlet pipe is connected to the water outlet of the water pump through a water diverter valve, and the water inlet of the water pump is connected to a water source.
2. A distributed energy storage device according to claim 1, characterized in that: The water inlet and the water outlet of the water pump are connected to a water inlet valve and a water outlet valve respectively.
3. A distributed energy storage device according to claim 1, characterized in that: The water source is a water tank, and a cooling box is connected between the water outlet of the water pump and the water diversion valve. The cooling box includes a box body, and a compressor is provided in the box body. The air outlet of the compressor is connected to one end of the condenser, and the other end of the condenser is connected to the second heat exchanger through an expansion valve. The second heat exchanger is connected to the air inlet of the compressor, and the water pump and the water diversion valve are respectively connected to the second heat exchanger.
4. A distributed energy storage device according to claim 3, characterized in that: The condenser is an air-cooled condenser. An air duct is provided in the box body. The condenser is arranged in the air duct. An air inlet flange and an air outlet flange are provided at both ends of the air duct respectively, and a fan is provided inside the air duct.
5. A distributed energy storage device according to claim 4, characterized in that: The fan is arranged between the condenser and the air outlet flange.
6. A distributed energy storage device according to claim 4, characterized in that: A plurality of supporting beams are provided on the lower side of the heat exchange box, and the air inlet is arranged on the lower side of the heat exchange box.
7. A distributed energy storage device according to claim 4, characterized in that: Air filters are provided on the inner sides of the air inlet and the air inlet flange.
8. A distributed energy storage device according to claim 4, characterized in that: A plurality of water baffles are arranged at inclined intervals on the inner side of the air supply port.