Centralized energy storage cabinet air cooling system

Abstract

The application discloses a centralized energy storage cabinet air cooling system and relates to the field of energy storage cabinets, which comprises a cabinet body and a battery pack arranged in the cabinet body, a cooling channel is arranged on the cabinet body, the cooling channel passes through the battery pack, the cooling channel comprises an air inlet and an air outlet, the cooling channel is communicated with a fan, the blowing port of the fan is communicated with the cooling channel, the air exhaust port of the fan is communicated with a mounting channel, a heat exchange pipe is arranged in the mounting channel, and the heat exchange pipe is communicated with a cold flow device for supplying cold fluid to the heat exchange pipe. The application has the advantages that the heat dissipation effect of the energy storage cabinet is improved when the temperature of external air is relatively high.

Description

Technical Field

[0001] This application relates to the field of energy storage cabinets, and in particular to a centralized energy storage cabinet air-cooled system. Background Technology

[0002] Energy storage technology mainly refers to the storage of electrical energy. The stored electrical energy can be used as emergency energy, or for storing energy when the grid load is low. At the same time, it can output energy when the grid load is high to smooth out peaks and valleys and reduce grid fluctuations.

[0003] In related technologies, an energy storage cabinet includes a cabinet body with a door. A bracket is installed inside the cabinet, and a battery is mounted on the bracket. An air inlet grille is located on the lower side of the cabinet body, and an exhaust grille is located on the upper side of the cabinet side wall. A cooling fan is also installed inside the cabinet at the exhaust grille. In practical applications, the cooling fan operates, expelling hot air from inside the cabinet. Cooler outside air enters the cabinet through the air inlet grille, thus cooling the energy storage rails.

[0004] Regarding the aforementioned technologies, the cooling fan drives airflow to dissipate heat from the energy storage cabinet. In this method, the heat dissipation effect of the energy storage cabinet largely depends on the temperature of the outside air. When the outside air temperature is high, the cooling fan's heat dissipation effect on the energy storage cabinet is weak, which needs improvement. Summary of the Invention

[0005] To address the issue that the cooling fan's cooling effect on the energy storage cabinet is weak when the outside air temperature is high in related technologies, this application provides a centralized air-cooled energy storage cabinet system.

[0006] This application provides a centralized energy storage cabinet air-cooled system, which adopts the following technical solution: A centralized energy storage cabinet air-cooled system includes a cabinet and a battery pack installed inside the cabinet. The cabinet has a cooling channel that passes around the battery pack. The cooling channel includes an air inlet and an air outlet. A fan is connected to the cooling channel. The air outlet of the fan is connected to the cooling channel. The air outlet of the fan is connected to an installation channel. A heat exchange tube is installed in the installation channel. The heat exchange tube is connected to a cold flow device for supplying cold fluid to the heat exchange tube.

[0007] By adopting the above technical solution, in practical application, the cold flow equipment supplies cold flow to the heat exchange tubes, the fan runs, the airflow passes through the installation channel, and is heated and cooled by the heat exchange tubes in the installation channel. Then the airflow is blown into the cooling channel by the fan, thereby cooling the battery pack and helping to improve the heat dissipation effect of the energy storage cabinet when the outside air temperature is high.

[0008] Preferably, the cooling channel is formed inside the cabinet. The cooling channel includes an air supply chamber, a through air duct, and an exhaust air chamber. Multiple battery packs are evenly spaced along the vertical direction inside the cabinet. One through air duct is formed between each two adjacent battery packs. The two opposite sides of each through air duct are connected to the air supply chamber and the exhaust air chamber, respectively. The air inlet is connected to the air supply chamber, and the air outlet is connected to the exhaust air chamber.

[0009] By adopting the above technical solution, the cold airflow is introduced between two adjacent battery packs through the air duct, which helps to improve the uniformity and comprehensiveness of heat dissipation for each battery pack.

[0010] Preferably, the air outlet is connected to the side of the installation channel away from the fan.

[0011] By adopting the above technical solution, the airflow circulates within the installation channel, fan, and cooling channel, reducing the entry of outside air and minimizing the occurrence of external debris and dust entering the cabinet and contaminating it.

[0012] Preferably, the cooling device includes a liquid chiller, and the outlet of the liquid chiller is connected to one end of the heat exchange tube.

[0013] By adopting the above technical solution, cold water is supplied to the heat exchange tubes by the liquid chiller, thereby ensuring the normal heat exchange and cooling operation of the airflow blown by the fan.

[0014] Preferably, the cold flow device further includes a cold water tank, the outlet of the liquid chiller is connected to the cold water tank, a circulation pump is provided between the cold water tank and the liquid chiller, the pump outlet is connected to the cold water tank, and the outlet of the circulation pump is connected to the liquid inlet of the liquid chiller. The cold water tank is connected to a delivery pump. The pump's inlet is connected to the cold water tank, and the pump's outlet is connected to the end of the heat exchange tube. The other end of the heat exchange tube is connected to the cold water tank via a return pipe.

[0015] By adopting the above technical solution, in practical applications, the liquid chiller supplies chilled water to the chilled water tank, and the circulating pump draws water from the chilled water tank and supplies it to the liquid chiller, thereby ensuring a low temperature of the water in the chilled water tank; at the same time, the transfer pump supplies water from the chilled water tank to the heat exchange tubes, and the water flows through the heat exchange tubes and then flows back into the chilled water tank through the return water pipe, thereby forming a circulation of cooling water and reducing the waste of water resources.

[0016] Preferably, a three-way control valve is connected between the pump's inlet and the cold water tank. The three-way control valve is a two-inlet-one-outlet type. The middle part of the cold water tank and the return pipe are respectively connected to the two inlets of the three-way control valve, and the pump's outlet is connected to the outlet of the three-way control valve.

[0017] By adopting the above technical solution, in practical applications, the three-way control valve can be adjusted, and the delivery pump can simultaneously draw water from the cold water tank and the return pipe. The water temperature in the return pipe is higher than that in the cold water tank. The water in the return pipe and the water in the cold water tank are combined through the three-way control valve. The amount of water drawn from the return pipe is controlled by the three-way control valve, thereby controlling the temperature of the water supplied to the heat exchange tube. This helps to facilitate the control of the temperature inside the energy storage cabinet, ensuring the heat dissipation effect of the energy storage cabinet while ensuring a good operating environment for the energy storage cabinet.

[0018] Preferably, one side of the cabinet is open in the horizontal direction and forms a cabinet door. The cabinet is equipped with an opening and closing door on the side of the cabinet door, and a sealing ring is provided between the opening and closing door and the side wall around the cabinet door.

[0019] By adopting the above technical solution, the sealing ring seals the opening and closing door and the side wall around the cabinet door, reducing the outward flow of air inside the cabinet, thereby helping to ensure the cold air pressure in the cooling channel and to ensure good heat dissipation for the battery pack.

[0020] Preferably, the installation channel is formed inside the cabinet; The cabinet has a back panel on the side of the mounting channel away from the fan. The exhaust chamber is formed between the battery pack and the back panel. An air inlet is provided on the back panel, which is opposite to one end of the mounting channel away from the fan. A first sealing plate is provided on the back panel at the position of the air inlet. The first sealing plate is hinged to the back panel and closes the air inlet. A first torsion spring is provided between the first sealing plate and the back panel to provide a thrust to the first sealing plate and close the air inlet. Furthermore, a first sealing gasket is provided around the air inlet on the inner side of the back plate. The first sealing gasket is fixed to the back plate and is pressed against the first sealing plate and the back plate.

[0021] By adopting the above technical solution, in actual operation, the airflow in the cooling channel will leak to a certain extent as it continues to circulate. At this time, the air pressure on the side of the installation channel away from the fan will be relatively low. With the suction of the fan, the first sealing plate will move inward and open the air inlet. The airflow will enter the cooling channel through the air inlet and replenish the airflow in the cooling channel, thereby helping to ensure the airflow in the cooling channel and helping to ensure the cooling effect on the battery pack.

[0022] In addition, when the first sealing plate closes the air inlet, Preferably, the back plate is provided with a first adjusting bolt, which is screwed into the back plate from the outside to the inside. The first adjusting bolt is adjacent to the air inlet, and the end of the first adjusting bolt extends into the cabinet body. One torsion bar of the first torsion spring abuts against the first sealing plate, and the other torsion bar of the first torsion spring abuts against the end of the first adjusting bolt. The first adjusting bolt has a first rotating cap sleeved on its end, and a first slot is provided on the first rotating cap. The torsion bar of the first torsion spring located on one side of the end of the first adjusting bolt is embedded in the first slot.

[0023] By adopting the above technical solution, rotating the first adjusting bolt can actuate the torsion bar of the first torsion spring and adjust the pressure of the torsion spring on the first sealing plate. In actual use, the staff can adjust the pressure of the torsion spring on the first sealing plate as needed, which helps to ensure the normal replenishment of airflow in the cooling channel.

[0024] Furthermore, by having the torsion bar of the first torsion spring embedded in the first slot of the first rotating cap, it helps to reduce the occurrence of the first torsion spring torsion bar disengaging from the first adjusting bolt.

[0025] Preferably, the installation channel is located on the lower side of the cabinet; A valve plate is provided on the lower side of the exhaust cavity. The valve plate is located above the first sealing plate. A rotating shaft is fixed in the middle of the valve plate. The rotating shaft is located between the installation channel and the upper side of the bottom battery pack. The rotating shaft is horizontal and is rotatably mounted on the cabinet. The cabinet is also provided with a drive assembly for driving the rotating shaft to rotate. An exhaust port is opened in the middle of the back plate. A second sealing plate is provided at the exhaust port of the back plate. The second sealing plate is hinged to the back plate at the position below the exhaust port. The second sealing plate closes the exhaust port. A second torsion spring is provided between the second sealing plate and the back plate to give the second sealing plate a thrust and cause the second sealing plate to close the exhaust port. The hinge joint between the first sealing plate and the back plate is located above the air inlet. A first pull wire is fixedly connected between the side of the first sealing plate away from its hinge joint and one edge of the valve plate. A second pull wire is fixedly connected between the side of the second sealing plate away from its hinge joint and the other edge of the valve plate. The connection points between the first pull wire and the valve plate and the second pull wire and the valve plate are located on both sides of the corresponding radial direction of the rotation axis. Furthermore, a second sealing gasket is provided around the exhaust port on the inner side of the back plate. The second sealing gasket is fixed to the back plate and is pressed against the second sealing plate and the back plate.

[0026] By adopting the above technical solution, in cold weather, the staff can drive the rotating shaft and valve plate to rotate through the drive component, and the valve plate can separate the upper and lower parts of the exhaust chamber. At the same time, under the action of the first and second pull lines, the first and second sealing plates will rotate and open the air inlet and exhaust outlet. The fan can directly draw in the air with a lower ambient temperature through the air inlet. After passing through the cooling channel, the air will be discharged through the exhaust outlet, thereby reducing the use of cold flow equipment and helping to reduce the cost of heat dissipation for the energy storage cabinet.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. Cold air is supplied to the heat exchange tubes through the cold flow equipment. The fan runs and the airflow passes through the installation channel. The airflow is heated and cooled by the heat exchange tubes in the installation channel. Then the airflow is blown into the cooling channel by the fan, thereby cooling the battery pack and helping to improve the heat dissipation effect of the energy storage cabinet when the outside air temperature is high. 2. By using a three-way control valve to extract a portion of the cooler water from the return pipe, the temperature of the water supplied to the opposing heat exchange tube can be adjusted, facilitating temperature control within the energy storage cabinet and ensuring both effective heat dissipation and a favorable operating environment for the energy storage cabinet. Attached Figure Description

[0028] Figure 1 Example 1 is a system diagram mainly illustrating the centralized energy storage cabinet air-cooled system; Figure 2 This is a schematic diagram illustrating the main structure of the energy storage cabinet in Example 1; Figure 3 This is a cross-sectional view of the cooling channel and installation channel structure, as shown in Example 2. Figure 4 This is a cross-sectional view of the structure of the first sealing plate, the second sealing plate, and the valve plate, as shown in Embodiment 2. Figure 5 for Figure 4 The enlarged view of part A mainly shows the structure of the first adjusting bolt and the second adjusting bolt; Figure 6 This is a schematic diagram illustrating the main structure of the driving component in Embodiment 2.

[0029] Attached reference numerals: 1. Cabinet; 11. Battery pack; 12. Cabinet door; 13. Opening door; 131. Sealing ring; 14. Support plate; 15. Back plate; 151. Air inlet; 152. First sealing gasket; 153. Exhaust port; 154. Second sealing gasket; 2. Cooling channel; 21. Air inlet; 22. Air outlet; 23. Air supply chamber; 24. Through-flow air duct; 25. Exhaust chamber; 3. Installation channel; 31. Fan; 32. Heat exchanger tube; 4. Cold flow equipment; 41. Liquid chiller; 42. Cold water tank; 43. Circulating pump; 44. Conveyor Pump; 45. Return water pipe; 451. Return water control valve; 46. Three-way control valve; 5. First sealing plate; 51. First torsion spring; 52. First pull wire; 6. First adjusting bolt; 61. First rotating cap; 611. First slot; 7. Partition plate; 71. Vent; 72. Valve plate; 721. Rotating shaft; 73. Drive assembly; 731. Turbine; 732. Worm gear; 7321. Handle; 8. Second sealing plate; 81. Second torsion spring; 82. Second pull wire; 9. Second adjusting bolt; 91. Second rotating cap; 92. Second slot. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a centralized energy storage cabinet air-cooling system.

[0032] Example 1: Reference Figure 1 and Figure 2 The centralized energy storage cabinet air-cooled system includes an energy storage cabinet, which comprises a cabinet body 1 and a battery pack 11 housed within the cabinet body 1. The cabinet body 1 also includes a cooling channel 2 and an installation channel 3. The cooling channel 2 includes an air inlet 21 and an air outlet 22, with the middle section of the cooling channel 2 passing around the battery pack 11. The installation channel 3 is located on the lower side of the cabinet body 1, with the air inlet 21 and air outlet 22 respectively connected to the two ends of the installation channel 3. A fan 31 is installed on one side of the air inlet 21 in the installation channel 3, with the fan 31's air outlet facing the air inlet 21 of the cooling channel 2 and its exhaust outlet facing the inside of the installation channel 3. The installation channel 3 also contains heat exchange pipes 32, with both ends of the heat exchange pipes 32 extending out of the cabinet body 1 and connected to a cooling device 4. In practical applications, the cold flow device 4 supplies cold water to the heat exchange tube 32. At the same time, the fan 31 is started. The fan 31 will drive the air in the installation channel 3 and the cooling channel 2 to form an airflow. The airflow passes through the installation channel 3 and is cooled by the cold water in the heat exchange tube 32. Subsequently, the lower temperature airflow will pass through the battery pack 11 and dissipate heat from the battery pack 11.

[0033] Specifically, one side of the cabinet 1 is open in the horizontal direction, forming a doorway 12. A hinged door 13 is connected to the cabinet 1 on one side of the doorway 12, and a sealing ring 131 is fixed to the inner periphery of the doorway 13. When the doorway 13 is closed, it presses the sealing ring 131 against the periphery of the doorway 12. A support plate 14 is provided in the middle of the cabinet 1. The support plate 14 is horizontal, and battery packs 11 are fixedly installed on the support plate 14. Multiple support plates 14 are evenly spaced in the vertical direction, and each battery pack 11 corresponds to a support plate 14. A gap is reserved between the bottom support plate 14 and the bottom wall of the cabinet 1, and an installation channel 3 is formed between the support plate 14 and the bottom wall of the cabinet 1. The side panel of the cabinet 1 opposite to the doorway 12 is a back panel 15. Both the doorway 12 and the back panel 15 are spaced apart from each support plate 14. The cooling channel 2 includes an air supply chamber 23, a through-flow air duct 24, and an exhaust air chamber 25. The air supply chamber 23 is formed between the opening / closing door 13 and the battery pack 11, and the exhaust air chamber 25 is formed between the back plate 15 and the battery pack 11. Each tray 14 has a pre-reserved gap with the adjacent battery pack 11 below it. Each tray 14 has one through-flow air duct between it and the adjacent battery pack 11 below it. Furthermore, the air inlet 21 is located below the air supply chamber 23, and the air outlet 22 is located below the exhaust air chamber 25.

[0034] Continue to refer to Figure 1 and Figure 2 The cooling equipment 4 includes a liquid chiller 41 and a cold water tank 42. The outlet of the liquid chiller 41 is connected to the cold water tank 42. A circulation pump 43 is installed between the cold water tank 42 and the liquid chiller 41. The suction port of the circulation pump 43 is connected to the cold water tank 42, and the outlet of the circulation pump 43 is connected to the liquid inlet of the liquid chiller 41. The cold water tank 42 is also connected to a transfer pump 44. The suction port of the transfer pump 44 is connected to the cold water tank 42, and the outlet of the transfer pump 44 is connected to one end of the heat exchange tube 32. The other end of the heat exchange tube 32 is connected to the cold water tank 42 via a return water pipe 45. Furthermore, a three-way control valve 46 is connected between the pump 44's inlet and the cold water tank 42. The three-way control valve 46 is a two-inlet-one-outlet type. The middle part of the cold water tank 42 and the return water pipe 45 are respectively connected to the two inlets of the three-way control valve 46. The pump 44's outlet is connected to the outlet of the three-way control valve 46. A return water control valve 451 is provided on the side of the return water pipe 45 near the cold water tank 42.

[0035] In other embodiments, several energy storage cabinets can be set up, with the delivery pump 44, three-way control valve 46, and return water pipe 45 corresponding to the energy storage cabinets, and they can share a set of liquid chiller 41 and cold water tank 42. Temperature detectors are installed on the pipe connecting the delivery pump 44 and the heat exchange pipe 32, in the air supply chamber 23, and in the exhaust chamber 25 to facilitate the control of the heat exchange water temperature by the operator.

[0036] The implementation principle of a centralized energy storage cabinet air-cooled system according to an embodiment of this application is as follows: In actual use, the circulating pump 43 draws water from the cold water tank 42 and supplies it to the liquid chiller 41. The liquid chiller 41 cools the water and then supplies the cooled water back to the cold water tank 42. Simultaneously, the delivery pump 44 draws water from the cold water tank 42 and supplies it to the heat exchange tube 32. The water passes through the heat exchange tube 32 and exchanges heat with and cools the air in the installation channel 3. Then, the water enters the cold water tank 42 through the return water pipe 45. When it is necessary to adjust the temperature of the water supplied to the heat exchange tube 32, the three-way control valve 46 can be adjusted so that the delivery pump 44 can draw water from the return water pipe 45. The water in the return water pipe 45 has a relatively high temperature, which mixes with the water drawn from the cold water tank 42, thus raising the temperature of the water supplied to the heat exchange tube 32.

[0037] During the cooling operation of the battery pack 11, the fan 31 draws airflow from the installation channel 3 and supplies the cooler airflow into the air supply chamber 23; then, the airflow is dispersed to each through air duct 24 to cool the battery pack 11; subsequently, the airflow enters the exhaust chamber 25 and re-enters the installation channel 3, where it is heated and cooled by the heat exchange tube 32.

[0038] Example 2: Reference Figure 3 and Figure 4 The difference between this embodiment and Embodiment 1 is that the back plate 15 has an air inlet 151 at the position opposite to the mounting channel 3. A first sealing plate 5 is provided on the back plate 15 at the position of the air inlet 151. The edge of the first sealing plate 5 is hinged to the back plate 15 at the position above the air inlet 151, and the first sealing plate 5 closes the air inlet 151. A first torsion spring 51 is sleeved on the hinge shaft between the first sealing plate 5 and the back plate 15. One torsion bar of the first torsion spring 51 abuts against the first sealing plate 5. A first adjusting bolt 6 is provided on the back plate 15 above the air inlet 151 (see reference). Figure 5 The first adjusting bolt 6 penetrates vertically through the back plate 15 from the outside to the inside and is threadedly connected to the back plate 15. The end of the first adjusting bolt 6 is fitted with a first rotating cap 61. The first rotating cap 61 has a first slot 611 on the side opposite to the first adjusting bolt 6. The other torsion bar of the first torsion spring 51 is embedded in the first slot 611.

[0039] Furthermore, a first sealing washer 152 is provided on the inner side of the back plate 15 around the air inlet 151. The first sealing washer 152 is fixed to the back plate 15 and abuts against the first sealing plate 5 and the back plate 15. In actual use, under the thrust of the first torsion spring 51, the first sealing plate 5 will press against the first sealing washer 152 and close the air inlet 151. When the airflow in the cabinet 1 leaks and the air pressure inside the cabinet 1 is low, the first sealing plate 5 will open under the suction of the fan 31, and air can enter the cabinet 1 through the air inlet 151 to replenish the air flowing inside the cabinet 1. In addition, the operator can rotate the first adjusting bolt 6 and push the torsion bar of the first torsion spring 51 to move along the axis of the first adjusting bolt 6 to adjust the thrust of the first torsion spring 51 on the first sealing plate 5.

[0040] Reference Figure 5 and Figure 6 A partition 7 is installed on the lower side of the exhaust chamber 25. The partition 7 is horizontally fixed on the back plate 15 and is located above the first sealing plate 5. The partition 7 is located between the installation channel 3 and the upper side of the bottom battery pack 11, and the partition 7 separates the upper and lower sides of the exhaust chamber 25. A vent 71 runs vertically through the middle of the partition 7, and the partition 7 is installed inside the vent 71. A rotating shaft 721 is fixed in the middle of the valve plate 72. The rotating shaft 721 is horizontal and vertically extends outward through the back plate 15. A drive assembly 73 for driving the rotating shaft 721 is also provided on the outer side of the back plate 15. The drive assembly 73 includes a turbine 731 and a worm gear 732. The turbine 731 is coaxially fixed to one end of the rotating shaft 721 on the outside of the cabinet 1. The worm gear 732 is rotatably mounted on the outside of the back plate 15, and a handle 7321 is fixed to one end of the worm gear 732.

[0041] Reference Figure 4 and Figure 5The back plate 15 is located above the valve plate 72 and has an exhaust port 153. A second sealing plate 8 is provided at the exhaust port 153 on the back plate 15. The edge of the second sealing plate 8 is hinged to the back plate 15 at the lower side of the exhaust port 153, and the second sealing plate 8 closes the exhaust port 153. A second torsion spring 81 is sleeved on the hinge shaft between the second sealing plate 8 and the back plate 15. One torsion bar of the second torsion spring 81 is pressed against the second sealing plate 8. A second adjusting bolt 9 is provided on the back plate 15 above the exhaust port 153. The second adjusting bolt 9 passes vertically through the back plate 15 from the outside to the inside and is threaded to the back plate 15. A second rotating cap 91 is sleeved on the end of the second adjusting bolt 9. A second slot 92 is provided on the side of the second rotating cap 91 away from the second adjusting bolt 9. The other torsion bar of the second torsion spring 81 is embedded in the second slot 92. Furthermore, a second sealing gasket 154 is provided on the inner side of the back plate 15 around the exhaust port 153. The second sealing gasket 154 is fixed on the back plate 15 and abuts against the second sealing plate 8 and the back plate 15.

[0042] Meanwhile, a first pull wire 52 is fixedly connected between the side of the first sealing plate 5 away from its hinge and one edge of the valve plate 72, and a second pull wire 82 is fixedly connected between the side of the second sealing plate 8 away from its hinge and the other edge of the valve plate 72. The connection points of the first pull wire 52 and the valve plate 72, and the connection points of the second pull wire 82 and the valve plate 72, are located on both sides of the corresponding radial direction of the rotating shaft 721. When the air in the installation channel 3 is cooled by the cold water introduced into the heat exchange tube 32, the valve plate 72 is vertical, the vent 71 is normally open, the first pull wire 52 and the second pull wire 82 are in a relaxed state, the first sealing plate 5 closes the air inlet 151 under the pressure of the first torsion spring 51, and the second sealing plate closes the exhaust outlet 153 under the action of the second torsion spring 81.

[0043] It should be noted that in other embodiments, pipes can be connected to the outside of both the air inlet 151 and the exhaust outlet 153. A filter can also be connected to the pipe connected to the air inlet 151, so that the air inlet 151 can draw in relatively clean air from the outside, and the exhaust outlet 153 can discharge the airflow to a position away from the cabinet 1, reducing the disturbance to the air pressure around the energy storage cabinet.

[0044] In cold weather, staff can shut down the liquid chiller 41, the circulating pump 43, and the delivery pump 44, and rotate the handle 7321. This drives the rotating shaft 721 and the valve plate 72 to rotate via the worm gear 732 and the turbine 731, thus sealing the vent 71. Simultaneously, under the action of the first pull wire 52 and the second pull wire 82, the first sealing plate 5 and the second sealing plate 8 will rotate and open the air inlet 151 and the exhaust port 153. The fan 31 can directly draw in the cooler airflow from the outside through the air inlet 151. After passing through the cooling channel 2, the airflow will be discharged through the exhaust port 153.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A centralized energy storage cabinet air-cooled system, comprising a cabinet (1) and a battery pack (11) disposed within the cabinet (1), characterized in that: The cabinet (1) is provided with a cooling channel (2), which passes around the battery pack (11). The cooling channel (2) includes an air inlet (21) and an air outlet (22). The cooling channel (2) is connected to a fan (31). The air outlet of the fan (31) is connected to the cooling channel (2). The air outlet of the fan (31) is connected to an installation channel (3). A heat exchange tube (32) is provided in the installation channel (3). The heat exchange tube (32) is connected to a cold flow device (4) for supplying cold fluid to the heat exchange tube (32). The cooling channel (2) is formed inside the cabinet (1). The cooling channel (2) includes an air supply chamber (23), a through air duct (24), and an exhaust air chamber (25). Multiple battery packs (11) are evenly spaced in the vertical direction inside the cabinet (1). One through air duct (24) is formed between two adjacent battery packs (11). The two sides of each through air duct (24) are connected to the air supply chamber (23) and the exhaust air chamber (25) respectively. The air inlet (21) is connected to the air supply chamber (23), and the air outlet (22) is connected to the exhaust air chamber (25). The air outlet (22) is connected to the side of the installation channel (3) away from the fan (31); The cabinet (1) has an open side in the horizontal direction and forms a cabinet door (12). The cabinet (1) has an opening and closing door (13) installed on the side of the cabinet door (12). A sealing ring (131) is provided between the opening and closing door (13) and the side wall of the cabinet door (12). The installation channel (3) is formed inside the cabinet (1); The cabinet (1) is located on the side of the installation channel (3) away from the fan (31) as a back plate (15). The exhaust chamber (25) is formed between the battery pack (11) and the back plate (15). An air inlet (151) is provided on the back plate (15). The air inlet (151) is opposite to one end of the installation channel (3) away from the fan (31). A first sealing plate (5) is provided at the position of the air inlet (151) on the back plate (15). The first sealing plate (5) is hinged to the back plate (15). The first sealing plate (5) closes the air inlet (151). A first torsion spring (51) is provided between the first sealing plate (5) and the back plate (15) to give the first sealing plate (5) a thrust and make the first sealing plate (5) close the air inlet (151). Furthermore, a first sealing gasket (152) is provided around the air inlet (151) on the inner side of the back plate (15). The first sealing gasket (152) is fixed on the back plate (15) and abuts against the first sealing plate (5) and the back plate (15). The back plate (15) is provided with a first adjusting bolt (6), which is screwed into the back plate (15) from the outside to the inside. The first adjusting bolt (6) is adjacent to the air inlet (151), and the end of the first adjusting bolt (6) extends into the cabinet (1). One torsion bar of the first torsion spring (51) abuts against the first sealing plate (5), and the other torsion bar of the first torsion spring (51) abuts against the end of the first adjusting bolt (6). The first adjusting bolt (6) is fitted with a first rotating cap (61) at its end. The first rotating cap (61) has a first slot (611) on it. The torsion bar of the first torsion spring (51) located on one side of the end of the first adjusting bolt (6) is embedded in the first slot (611).

2. The centralized energy storage cabinet air-cooled system according to claim 1, characterized in that: The cooling device (4) includes a liquid chiller (41), the outlet of which is connected to one end of the heat exchange tube (32).

3. The centralized energy storage cabinet air-cooled system according to claim 2, characterized in that: The cold flow device (4) also includes a cold water tank (42), the outlet of the liquid chiller (41) is connected to the cold water tank (42), a circulation pump (43) is provided between the cold water tank (42) and the liquid chiller (41), the pump outlet of the circulation pump (43) is connected to the cold water tank (42), and the outlet of the circulation pump (43) is connected to the liquid inlet of the liquid chiller (41). The cold water tank (42) is connected to a delivery pump (44), the pump inlet of which is connected to the cold water tank (42), the outlet of which is connected to the end of the heat exchange tube (32), and the other end of the heat exchange tube (32) is connected to the cold water tank (42) by a return water pipe (45).

4. The centralized energy storage cabinet air-cooled system according to claim 3, characterized in that: The pump (44) is connected to the cold water tank (42) by a three-way control valve (46). The three-way control valve (46) is a two-inlet-one-outlet combined type. The middle part of the cold water tank (42) and the return water pipe (45) are respectively connected to the two inlets of the three-way control valve (46). The pump (44) is connected to the outlet of the three-way control valve (46).

5. A centralized energy storage cabinet air-cooled system according to claim 1, characterized in that: The installation channel (3) is located on the lower side of the cabinet (1); A valve plate (72) is provided on the lower side of the exhaust chamber (25). The valve plate (72) is located above the first sealing plate (5). A rotating shaft (721) is fixed in the middle of the valve plate (72). The rotating shaft (721) is located between the installation channel (3) and the upper side of the bottom battery pack (11). The rotating shaft (721) is horizontal and is rotatably mounted on the cabinet (1). A drive assembly (73) for driving the rotating shaft (721) is also provided on the cabinet (1). The back plate (15) has an exhaust port (153) in the middle. The back plate (15) has a second sealing plate (8) at the exhaust port (153). The second sealing plate (8) is hinged to the back plate (15) at the position below the exhaust port (153). The second sealing plate (8) closes the exhaust port (153). A second torsion spring (81) is provided between the second sealing plate (8) and the back plate (15) to give the second sealing plate (8) a thrust and make the second sealing plate (8) close the exhaust port (153). The hinge of the first sealing plate (5) and the back plate (15) is located on the upper side of the air inlet (151). A first pull wire (52) is fixedly connected between the side of the first sealing plate (5) away from its hinge and one side edge of the valve plate (72). A second pull wire (82) is fixedly connected between the side of the second sealing plate (8) away from its hinge and the other side edge of the valve plate (72). The connection between the first pull wire (52) and the valve plate (72) and the connection between the second pull wire (82) and the valve plate (72) are respectively located on both sides of the corresponding radial direction of the rotating shaft (721). Furthermore, a second sealing gasket (154) is provided around the exhaust port (153) on the inner side of the back plate (15). The second sealing gasket (154) is fixed on the back plate (15) and abuts against the second sealing plate (8) and the back plate (15).

Images