Air-cooled heat dissipation device of air-cooled energy storage cabinet

Abstract

The utility model belongs to the technical field of energy storage cabinets, and relates to an air-cooled heat dissipation device of an air-cooled energy storage cabinet, which comprises an energy storage cabinet, a cabinet door, a special-shaped direct-connection air duct and an in-cabinet air guide box, an air inlet of the special-shaped direct-connection air duct is butted with a cold air outlet on the inner wall of the cabinet door, and an air outlet of the special-shaped direct-connection air duct is butted with an air inlet of the in-cabinet air guide box; the in-cabinet air guide box is arranged at the top in the energy storage cabinet, the in-cabinet air guide box is in a cuboid shape, an air inlet of the in-cabinet air guide box is formed in the side face, facing one side of a cabinet door, of the cuboid, the in-cabinet air guide box is provided with a plurality of air guide cavities, and air outlets of the air guide cavities directly face a left air duct, a middle air duct and a right air duct of a PACK frame in the energy storage cabinet respectively; according to the utility model, through the air guide cavities with different shapes and the distribution of different cold air flows, the cold air flow distribution in the energy storage cabinet is more reasonable, and the PACK temperature difference is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage cabinets and relates to an air-cooling heat dissipation device of an air-cooling energy storage cabinet. Background Art

[0002] Energy storage cabinets are a type of equipment specially designed to store electrical energy. They have a wide range of applications and play an important role in power systems, renewable energy utilization, home backup power supplies, and specific industry applications. Energy storage cabinets are of great significance to improving energy utilization efficiency, promoting the popularization of renewable energy, and enhancing the flexibility and reliability of power systems through their high-efficiency energy storage and release capabilities. Existing cooling methods for energy storage cabinets are mainly divided into two categories: air cooling and liquid cooling. Among them, air-cooled energy storage cabinets have lower costs and are simpler to manufacture technically. An excellent air-cooled energy storage cabinet is inseparable from a reasonable heat dissipation structure. The more uniform and equal the amount of cold air allocated to each battery PACK, the smaller the temperature difference of the battery PACK. The most critical part is the design of the air duct.

[0003] However, the existing air-cooled energy storage cabinet air cooling method will reduce the air cooling kinetic energy when turning, and it is easy to cause air vortexes, which will seriously disrupt the entire air flow direction. In addition, the air volume distribution is uneven, and it is difficult to ensure that the air volume in each gap is distributed in an ideal proportion.

[0004] Therefore, an air-cooling heat dissipation device for an air-cooled energy storage cabinet that can reasonably distribute the air volume and is not prone to air flow vortices is needed to solve the above technical problems. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: an air-cooled heat dissipation device for an air-cooled energy storage cabinet, comprising: an energy storage cabinet, a cabinet door, a special-shaped direct-connected air duct, and an air guide box in the cabinet, wherein the air inlet of the special-shaped direct-connected air duct is connected to the cold air outlet on the inner wall of the cabinet door, and the air outlet of the special-shaped direct-connected air duct is connected to the air inlet of the air guide box in the cabinet;

[0006] The air guide box in the cabinet is arranged at the top of the cabinet of the energy storage cabinet. The air guide box in the cabinet is in the shape of a rectangular parallelepiped. The air inlet of the air guide box in the cabinet is arranged on the side of the rectangular parallelepiped facing the cabinet door. The first air guide cavity, the second air guide cavity, and the third air guide cavity are arranged along the horizontal plane in the air guide box in the cabinet. The first air guide cavity is respectively provided with a first air inlet and a first air outlet, the second air guide cavity is respectively provided with a second air inlet and a second air outlet, and the third air guide cavity is respectively provided with a third air inlet and a third air outlet. The first air inlet, the second air inlet, and the third air inlet are respectively connected to each other. To the air inlet of the air guide box in the cabinet, the first air outlet, the second air outlet, and the third air outlet are all vertically downward toward the inside of the energy storage cabinet. The first air outlet, the second air outlet, and the third air outlet are all long and parallel to each other. The first air outlet is located at the left edge of the first air guide cavity, the second air outlet is located in the middle of the second air guide cavity, and the third air outlet is located at the right edge of the third air guide cavity. The first air outlet, the second air outlet, and the third air outlet are respectively parallel and facing the left air duct, the middle air duct, and the right air duct of the PACK rack in the energy storage cabinet.

[0007] Preferably, the first air guide cavity and the third air guide cavity are in the shape of a prism with a right-angled triangle cross section, and the two right-angled sides of the first air guide cavity and the third air guide cavity are respectively oriented toward the door of the energy storage cabinet and the side wall of the energy storage cabinet; the second air guide cavity is in the shape of a rectangular parallelepiped.

[0008] More preferably, the intersection of the side surface and the top surface of the left edge of the first air guide cavity is arc-shaped and the convergence direction of the arc is toward the first air outlet, the intersection of the side surface and the top surface of the right edge of the third air guide cavity is arc-shaped and the convergence direction of the arc is toward the third air outlet, and the intersection of the side surface and the top surface of the second air guide cavity facing the second air inlet is sloped and the slope faces the second air outlet.

[0009] Preferably, the first air inlet, the second air inlet, and the third air inlet distribute the cold air flow rate of the air inlet of the air guide box in the cabinet in proportion.

[0010] More preferably, the distribution ratio of the first air inlet, the second air inlet, and the third air inlet is 1:1:1 to 1:2:1.

[0011] Preferably, the air outlet of the special-shaped directly connected air duct and the air inlet of the air guide box in the cabinet are both rectangular.

[0012] Preferably, two vertical rows of PACK racks are provided in the energy storage cabinet, and guide plates are provided on the tops of the PACK racks vertically downward, and the guide plates are respectively opposite to the first air outlet, the second air outlet, and the third air outlet.

[0013] Preferably, a circulating refrigeration device is provided on the cabinet door, the air inlet of the circulating refrigeration device is located at the lower part of the cabinet door, and the air outlet of the circulating refrigeration device is connected to the air inlet of the special-shaped direct-connected air duct.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model makes the cold air flow distribution in the energy storage cabinet more reasonable and reduces the PACK temperature difference through the distribution of air guide cavities of different shapes and different cold air flow rates.

[0016] 2. The utility model reduces the kinetic energy loss of air conditioning airflow by converging arcs and guiding inclined surfaces when the cold air is converted from a horizontal flow direction to a vertical flow direction, thereby indirectly reducing the power consumption of the air conditioner.

[0017] 3. The utility model improves the cooling efficiency of the batteries in the energy storage cabinet by directly facing the cooling air duct of the PACK rack through the air outlet of each cold air chamber, and adjusts the temperature in the cabinet more quickly and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of an energy storage cabinet without load of an air-cooled heat dissipation device of an air-cooled energy storage cabinet;

[0019] Figure 2 It is a three-dimensional schematic diagram of a fully loaded energy storage cabinet;

[0020] Figure 3 This is a three-dimensional schematic diagram of the air guide box in the cabinet when viewed from an oblique angle;

[0021] Figure 4 This is a three-dimensional schematic diagram of the air guide box in the cabinet from an oblique top view;

[0022] Figure 5 It is a three-dimensional schematic diagram of a special-shaped direct-connected air duct.

[0023] Among them, 1. energy storage cabinet; 2. cabinet door; 3. special-shaped direct-connected air duct; 4. air guide box in the cabinet; 5. first air guide cavity; 6. second air guide cavity; 7. third air guide cavity; 8. PACK rack; 9. guide plate; 10. circulating refrigeration device; 51. first air inlet; 52. first air outlet; 61. second air inlet; 62. second air outlet; 71. third air inlet; 72. third air outlet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the relevant technologies in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 5As shown, an air-cooling heat dissipation device for an air-cooled energy storage cabinet comprises: an energy storage cabinet 1, a cabinet door 2, a special-shaped direct-connected air duct 3, and an air guide box 4 in the cabinet, wherein the air inlet of the special-shaped direct-connected air duct 3 is connected to the cold air outlet on the inner wall of the cabinet door 2, and the air outlet of the special-shaped direct-connected air duct 3 is connected to the air inlet of the air guide box 4 in the cabinet; the cold air source on the cabinet door 2 or the cold air source outside the energy storage cabinet 1 sends cold air to the special-shaped direct-connected air duct 3, and the special-shaped direct-connected air duct 3 then sends cold air to the air guide box 4 in the cabinet, and the air guide box 4 in the cabinet evenly distributes the cold air to the interior of the energy storage cabinet 1 for air cooling and heat dissipation;

[0026] The air guide box 4 in the cabinet is arranged at the top of the energy storage cabinet 1. The air guide box 4 in the cabinet is in the shape of a rectangular parallelepiped. The air inlet of the air guide box 4 in the cabinet is arranged on the side of the rectangular parallelepiped facing the cabinet door 2. The first air guide cavity 5, the second air guide cavity 6, and the third air guide cavity 7 are arranged along the horizontal plane in the air guide box 4 in the cabinet. The first air guide cavity 5 is respectively provided with a first air inlet 51 and a first air outlet 52, the second air guide cavity 6 is respectively provided with a second air inlet 61 and a second air outlet 62, and the third air guide cavity 7 is respectively provided with a third air inlet 71 and a third air outlet 72. The first air inlet 51, the second air inlet 61, and the third air inlet 71 are respectively connected to the air inlet of the air guide box 4 in the cabinet, the first air outlet 52, the second air outlet 62, and the third air outlet 72 are all vertically downward toward the interior of the energy storage cabinet 1, and the first air outlet 52, the second air outlet 62, and the third air outlet 72 are They are in the shape of long strips and are parallel to each other. The first air outlet 52 is located at the left edge of the first air guide cavity 5, the second air outlet 62 is located in the middle of the second air guide cavity 6, and the third air outlet 72 is located at the right edge of the third air guide cavity 7. The first air outlet 52, the second air outlet 62, and the third air outlet 72 are respectively parallel to and face the left air duct, the middle air duct, and the right air duct of the PACK rack 8 in the energy storage cabinet 1; the inner cavity of the air guide box 4 in the cabinet is divided into three independent air guide cavities, each of which distributes the cold air flow of the air guide box 4 in the cabinet, and the air outlets of each air guide cavity are respectively parallel to and face the cooling air duct of the PACK rack 8 in the energy storage cabinet 1, so that the cold air is evenly distributed to the PACK rack 8 with a more reasonable flow rate for refrigeration cycle, so that the temperature difference between the batteries in the rack is as small as possible, the battery temperature is more uniform, the charging and discharging efficiency of the energy storage cabinet is improved, and the energy storage cost is reduced.

[0027] Furthermore, the first air guide cavity 5 and the third air guide cavity 7 are in the shape of a prism with a right-angled triangle cross-section, and the two right-angled sides of the first air guide cavity 5 and the third air guide cavity 7 are respectively oriented toward the door of the energy storage cabinet 1 and the side wall of the energy storage cabinet 1; the second air guide cavity 6 is in the shape of a rectangular parallelepiped; air guide cavities of different shapes can avoid the problem of unbalanced cold air flow caused by the different angles and positions of the air guide cavity connected to the air inlet of the air guide box 4 in the cabinet, and at the same time can alleviate or eliminate the problem of air flow vortexes generated by the different angles and positions of the air guide cavity connected to the air inlet of the air guide box 4 in the cabinet, thereby disrupting the airflow direction of the cold air.

[0028] Furthermore, the intersection of the side surface and the top surface of the left edge of the first air guiding cavity 5 is arc-shaped, and the convergence direction of the arc is toward the first air outlet 52; the intersection of the side surface and the top surface of the right edge of the third air guiding cavity 7 is arc-shaped, and the convergence direction of the arc is toward the third air outlet 72; the intersection of the side surface and the top surface of the second air guiding cavity 6 facing the second air inlet 61 is inclined, and the inclined surface faces the second air outlet 62; the converging arc and the guiding inclined surface make the kinetic energy loss of the cold air less when the horizontal flow direction is converted to the vertical flow direction, so that the cooling kinetic energy of the cold air is greater when entering the energy storage cabinet 1, thereby enhancing the efficiency of the cold air circulation inside the energy storage cabinet 1.

[0029] Furthermore, the first air inlet 51, the second air inlet 61, and the third air inlet 71 distribute the cold air flow rate of the air guide box 4 in the cabinet in proportion.

[0030] Furthermore, the distribution ratio of the first air inlet 51, the second air inlet 61, and the third air inlet 71 includes 1:1:1 to 1:2:1; different cold air distribution ratios are selected according to the number, arrangement position, spacing of batteries inside the energy storage cabinet 1 of different brands, specifications, and models, and the shape, size, and flow rate of each air guide cavity, so as to finally distribute the cold air flow rate on demand, ensure that the temperature difference between the PACK rack and the battery inside the energy storage cabinet 1 is as small as possible, make the battery temperature more uniform, and improve the charging and discharging efficiency of the energy storage cabinet.

[0031] Furthermore, the air outlet of the special-shaped direct-connected air duct 3 and the air inlet of the air guide box 4 in the cabinet are both rectangular; the rectangular air inlet allows the air outlet to be distributed in the horizontal direction as much as possible. The advantage of horizontal distribution is that the cold air flow can be distributed to the side of the energy storage cabinet 1 to a greater extent, and at the same time, the air guide box 4 in the cabinet can be made flatter, making full use of the cabinet top capacity to avoid the air guide box 4 in the cabinet occupying too much cabinet space.

[0032] Furthermore, two vertical rows of PACK racks 8 are provided in the energy storage cabinet 1 , and guide plates 9 are provided vertically downward on the top of the PACK racks 8 , and the guide plates 9 are respectively opposite to the first air outlet 52 , the second air outlet 62 , and the third air outlet 72 .

[0033] Furthermore, a circulating refrigeration device 10 is provided on the cabinet door 2, and the air inlet of the circulating refrigeration device 10 is located at the lower part of the cabinet door 2, and the air outlet of the circulating refrigeration device 10 is connected to the air inlet of the special-shaped direct-connected air duct 3; when the circulating refrigeration device 10 is set on the cabinet door 2, the cold air is sent from the circulating refrigeration device 10 to the air guide box 4 in the cabinet through the special-shaped direct-connected air duct 3, and the air guide box 4 in the cabinet distributes the cold air and sends it down from the top of the energy storage cabinet 1. The cold air enters from the top layer, flows downward, and is sucked in by the air intake ports on both sides of the PACK rack 8. The hot air is discharged from the front and then sucked in by the air inlet of the circulating refrigeration device 10 set at the lower part of the cabinet door 2 for re-cooling. This cycle is repeated to reduce the temperature of the batteries and equipment inside the energy storage cabinet 1.

[0034] Example

[0035] This embodiment takes the 200-degree capacity energy storage cabinet 1 as an example. Two vertical rows of PACK racks 8 are arranged in the energy storage cabinet 1. Each PACK rack 8 is 14.336 kWh. There are 14 PACK racks 8 in total, which are divided into two rows of 7 layers, and two PACK racks 8 are arranged side by side in one layer. There are non-uniform air suction ports on both sides of the PACK rack 8, and an exhaust fan on the front. Under the action of the exhaust fan, the air-conditioned cold air can be sucked in from both sides of the PACK rack 8, and flow to the middle of the PACK rack 8 for cooling. The hot air after cooling and heating is finally discharged from the fan port on the front of the PACK rack 8, thereby forming alternating hot and cold air.

[0036] The circulating refrigeration device 10 selects a built-in air conditioner or refrigeration equipment, and the circulating refrigeration device 10 is installed on the cabinet door 2. The special-shaped direct-connected air duct 3 is installed on the cabinet door 2 and is located above the circulating refrigeration device 10. The circulating air return port of the circulating refrigeration device 10 is located below the circulating refrigeration device 10 and faces the inside of the energy storage cabinet 1. The air inlet of the special-shaped direct-connected air duct 3 is connected to the circulating refrigeration device 10, and the air outlet position of the special-shaped direct-connected air duct 3 matches the air inlet position of the air guide box 4 in the cabinet. When the cabinet door 2 is closed, the air outlet of the special-shaped direct-connected air duct 3 is buckled and closed on the air inlet of the air guide box 4 in the cabinet.

[0037] When the cabinet door 2 is closed and the energy storage cabinet 1 starts to dissipate heat through air, the cold air output by the circulating refrigeration device 10 is sent to the air guide box 4 in the cabinet through the special-shaped direct air duct 3. The air guide box 4 in the cabinet distributes the cold air and sends it down from the top of the energy storage cabinet 1. The cold air reasonably distributed through the first air guide cavity 5, the second air guide cavity 6, and the third air guide cavity 7 will not produce air flow vortices to disrupt the direction of the cold air, and the kinetic energy lost when the cold air changes from horizontal flow to vertical flow is less. The stable, balanced, and strong cold air flows downward in three directions, is sucked in by the air intakes on both sides of the PACK rack 8, and the hot air is discharged from the front, and then sucked in by the air inlet of the circulating refrigeration device 10 set at the bottom of the cabinet door 2 for re-refrigeration. The air cooling and heat dissipation device reduces the temperature of the batteries and equipment inside the energy storage cabinet 1, ensuring the charging and discharging efficiency of the energy storage cabinet 1.

[0038] In summary, the utility model makes the cold air flow distribution in the energy storage cabinet more reasonable and reduces the PACK temperature difference through the distribution of air guide cavities of different shapes and different cold air flow rates, and therefore has broad application prospects.

[0039] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An air-cooled heat dissipation device for an air-cooled energy storage cabinet, characterized in that: include: An energy storage cabinet (1), a cabinet door (2), a special-shaped directly connected air duct (3), and an air guide box (4) in the cabinet, wherein the air inlet of the special-shaped directly connected air duct (3) is connected to the cold air outlet on the inner wall of the cabinet door (2), and the air outlet of the special-shaped directly connected air duct (3) is connected to the air inlet of the air guide box (4) in the cabinet; The in-cabinet air guide box (4) is arranged at the top of the energy storage cabinet (1). The in-cabinet air guide box (4) is in the shape of a rectangular parallelepiped. The air inlet of the in-cabinet air guide box (4) is arranged on the side of the rectangular parallelepiped facing the cabinet door (2). The in-cabinet air guide box (4) is provided with a first air guide cavity (5), a second air guide cavity (6), and a third air guide cavity (7) along a horizontal plane. The first air guide cavity (5) is provided with a first air inlet (51) and a first air outlet (52), the second air guide cavity (6) is provided with a second air inlet (61) and a second air outlet (62), the third air guide cavity (7) is provided with a third air inlet (71) and a third air outlet (72), the first air inlet (51), the second air inlet (61), and the third air inlet (71) are provided with a first air inlet (51). The first air outlet (52), the second air outlet (62) and the third air outlet (72) are respectively connected to the air inlet of the air guide box (4) in the cabinet, and are all vertically downward toward the interior of the energy storage cabinet (1). The first air outlet (52), the second air outlet (62) and the third air outlet (72) are all long and parallel to each other. The first air outlet (52) is located at the left edge of the first air guide cavity (5), the second air outlet (62) is located in the middle of the second air guide cavity (6), and the third air outlet (72) is located at the right edge of the third air guide cavity (7). The first air outlet (52), the second air outlet (62) and the third air outlet (72) are respectively parallel to and directly facing the left air duct, the middle air duct and the right air duct of the PACK rack (8) in the energy storage cabinet (1).

2. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 1, characterized in that: The first air guide cavity (5) and the third air guide cavity (7) are in the shape of a prism with a right-angled triangle cross section, and the two right-angled sides of the first air guide cavity (5) and the third air guide cavity (7) are respectively oriented toward the door direction of the energy storage cabinet (1) and the side wall direction of the energy storage cabinet (1); the second air guide cavity (6) is in the shape of a rectangular parallelepiped.

3. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 2, characterized in that: The intersection of the side surface of the left edge of the first air guide cavity (5) and the top surface is arc-shaped, and the convergence direction of the arc is toward the first air outlet (52); the intersection of the side surface of the right edge of the third air guide cavity (7) and the top surface is arc-shaped, and the convergence direction of the arc is toward the third air outlet (72); the intersection of the side surface of the second air guide cavity (6) facing the second air inlet (61) and the top surface is inclined, and the inclined surface faces the second air outlet (62).

4. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 1, characterized in that: The first air inlet (51), the second air inlet (61), and the third air inlet (71) distribute the cold air flow rate of the air inlet of the air guide box (4) in the cabinet in proportion.

5. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 4, characterized in that: The distribution ratio of the first air inlet (51), the second air inlet (61), and the third air inlet (71) is 1:1:1 to 1:2:

1.

6. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 1, characterized in that: The air outlet of the special-shaped directly connected air duct (3) and the air inlet of the air guide box (4) in the cabinet are both rectangular.

7. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 1, characterized in that: Two vertical rows of PACK racks (8) are provided in the energy storage cabinet (1), and a guide plate (9) vertically downward is provided on the top of the PACK rack (8), and the guide plate (9) is respectively opposite to the first air outlet (52), the second air outlet (62), and the third air outlet (72).

8. The air-cooling heat dissipation device of an air-cooled energy storage cabinet according to claim 1, characterized in that: The cabinet door (2) is provided with a circulating refrigeration device (10), the air inlet of the circulating refrigeration device (10) is located at the lower part of the cabinet door (2), and the air outlet of the circulating refrigeration device (10) is connected to the air inlet of the special-shaped direct-connected air duct (3).

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