High-heat-dissipation and high-protection energy storage cabinet

Abstract

The utility model relates to the technical field of energy storage cabinets, in particular to a high-heat-dissipation and high-protection energy storage cabinet which comprises a cabinet body, a battery bin and an outer circulation condensation bin which are independent of each other are arranged in the cabinet body, a plurality of energy storage battery packs are arranged in the battery bin, an inner circulation condensation bin is arranged between the battery bin and the outer circulation condensation bin, and the energy storage battery packs are arranged in the inner circulation condensation bin. A dry cooler and a centrifugal fan used for driving air in the battery bin to blow the dry cooler are arranged in the internal circulation condensation bin; an outer circulation heat dissipation mechanism for providing low-temperature refrigerants for the dry cooler is arranged in the outer circulation condensation bin. The energy storage battery pack has the effects of improving the heat dissipation efficiency and the protection grade, prolonging the service life of the energy storage battery pack and adapting to more environmental working condition requirements.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of energy storage cabinets, in particular to a high-heat-dissipation and high-protection energy storage cabinet. BACKGROUND

[0002] In the thermal management of commercial and industrial energy storage battery systems, air cooling and liquid cooling are two main forms. Compared with liquid-cooled energy storage cabinets, air-cooled energy storage cabinets have significant advantages in many aspects:

[0003] High reliability and low failure rate: air-cooled energy storage cabinets have no risk of liquid corrosion or sedimentation, and have better stability in long-term operation.

[0004] Strong environmental adaptability: in low-temperature environments, air cooling does not need to worry about the freezing problem of cooling liquid, has no leakage risk, and does not rely on chemicals.

[0005] Easy maintenance: the maintenance workload of air-cooled energy storage cabinets is less, the maintenance cycle is longer, and the requirements for maintenance equipment are lower.

[0006] However, the air-cooled energy storage cabinets on the market have some problems, such as most of them use front door end appearance type air conditioners, which leads to large cabinet area, and the wall-mounted air conditioner hung on the panel will cause the problem of hanging under the door, affecting the use experience and appearance integration. In addition, due to the design of the air duct, the protection level of the air-cooled energy storage cabinet cannot be very high, generally IP54, which cannot be used in harsh working conditions such as seaside, port and mine.

[0007] Therefore, it is urgent to design a new outdoor air-cooled energy storage cabinet to improve the heat dissipation efficiency and protection level, and improve the service life of the energy storage battery pack and adapt to more environmental working conditions. CONTENT OF THE INVENTION

[0008] In order to solve the above technical problems, the application provides a high-heat-dissipation and high-protection energy storage cabinet, which has the advantages of improving the heat dissipation efficiency and protection level, improving the service life of the energy storage battery pack and adapting to more environmental working conditions.

[0009] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0010] A high-heat-dissipation and high-protection energy storage cabinet, comprising a cabinet body, a battery compartment and an external circulation condensation compartment are arranged in the cabinet body and are independent of each other, a plurality of energy storage battery packs are arranged in the battery compartment, an internal circulation condensation compartment is arranged between the battery compartment and the external circulation condensation compartment, a dry cooler is arranged in the internal circulation condensation compartment, and a centrifugal fan is arranged for driving air blowing of the battery compartment to the dry cooler;

[0011] An external circulation heat dissipation mechanism for providing low-temperature coolant to the dry cooler is arranged in the external circulation condensation compartment.

[0012] The heat generated by the energy storage battery pack is transferred to the battery compartment to form high-temperature hot air, the high-temperature hot air is extracted under the action of the centrifugal fan and blows the surface of the dry cooler, at this time, the outer circulation heat dissipation mechanism supplies low-temperature refrigerant into the dry cooler pipeline, so that the high-temperature hot air blowing on the dry cooler can be absorbed by the dry cooler to form low-temperature cold air and then blow to each part of the battery compartment, thereby cooling the energy storage battery pack, at this time, the air in the battery compartment only circulates in the interior and does not contact the outside, thereby ensuring the heat dissipation effect, and through the air circulation isolation, the IP level reaches IP65 high protection, and is suitable for harsh working condition environments such as seashore, port and mine. The structure is simple, the maintenance workload is small, the maintenance cycle is long, the requirement for the maintenance equipment is low, and the structure is suitable for large-scale application.

[0013] As a preferred scheme of the present application, the energy storage battery pack comprises a mounting frame, a plurality of battery cells are arranged in the mounting frame, a heat dissipation aluminum plate is arranged between adjacent two battery cells, a heat dissipation air duct is arranged on the heat dissipation aluminum plate, and a heat dissipation fan is arranged on the mounting frame to blow air along the heat dissipation air duct.

[0014] The heat of the battery cell can be quickly transferred to the heat dissipation aluminum plate, and the heat transfer efficiency is high, so that the heat can be quickly transferred to the surrounding air, the heat dissipation fan blows air to the heat dissipation air duct to improve the heat convection efficiency, and the heat dissipation effect is ensured.

[0015] As a preferred scheme of the present application, a wind guide cover is arranged between the heat dissipation fan and the plurality of battery cells.

[0016] The above technical scheme is realized, so that the air flow is uniformly blown to the entire energy storage battery pack under the action of the wind guide cover, and the heat dissipation effect is ensured.

[0017] As a preferred scheme of the present application, the outer circulation heat dissipation mechanism comprises a condenser for supplying low-temperature refrigerant into the dry cooler, a refrigerant compression pump, a throttling element and an axial flow fan.

[0018] The above technical scheme is realized, the high-temperature and low-pressure refrigerant gas is compressed into high-temperature and high-pressure gas by the refrigerant compression pump. The high-temperature and high-pressure refrigerant gas enters the condenser, exchanges heat with the outside air, releases heat and condenses into high-pressure and normal-temperature liquid; the axial flow fan forces air to flow through the condenser and carries away heat; the high-pressure and normal-temperature refrigerant liquid passes through the throttling device, the pressure and temperature are reduced, and the refrigerant liquid becomes low-temperature and low-pressure liquid; the low-temperature and low-pressure refrigerant liquid enters the dry cooler (as the evaporator of the four refrigeration components of the outer circulation heat dissipation mechanism), absorbs the heat of the surrounding environment, and evaporates into low-temperature and low-pressure gas; the centrifugal fan in the inner circulation compartment blows the air in the battery compartment through the dry cooler and carries away heat, thereby achieving air heat dissipation in the battery compartment.

[0019] As a preferred scheme of the application, the bottom of the battery compartment is provided with a self-sensing fire extinguisher.

[0020] The above technical solution is implemented to enable the battery compartment to automatically power off and start the self-water-based fire extinguisher after a fire.

[0021] In summary, the application includes at least one of the following beneficial technical effects:

[0022] 1. By optimizing the air duct design and internal and external circulating air isolation, the heat dissipation efficiency of the battery pack in the energy storage cabinet is significantly improved, ensuring the stable operation of the equipment in high temperature environment. The internal and external circulating air isolation design ensures that the IP level reaches IP65, and is suitable for harsh working condition environments such as seashores, ports and mines. The structure design is simple, the maintenance workload is small, the maintenance cycle is long, the requirements for maintenance equipment are low, and it is suitable for large-scale application. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application.

[0025] Figure 2 is a schematic diagram of the internal structure of the cabinet body in the embodiment of the application.

[0026] Figure 3 is a schematic diagram of the internal and external circulation in the embodiment of the application.

[0027] Figure 4 is a schematic diagram of the structure of the energy storage battery pack in the embodiment of the application.

[0028] Figure 5 is a schematic diagram of the cell assembly in the embodiment of the application.

[0029] Reference signs: 1, cabinet body; 2, battery compartment; 3, external circulating condensing compartment; 4, energy storage battery pack; 41, mounting bracket; 42, cell; 43, heat dissipation aluminum plate; 44, heat dissipation air duct; 45, heat dissipation fan; 46, wind deflector; 5, internal circulating condensing compartment; 6, self-sensing fire extinguisher; 7, dry cooler; 8, centrifugal fan; 9, external circulating heat dissipation mechanism; 91, refrigerant compression pump; 92, condenser; 93, axial flow fan. DETAILED DESCRIPTION

[0030] The following will be described in conjunction with the accompanying Figures 1 to 5Further details of the application are provided below.

[0031] The embodiment of the application discloses a high-heat-dissipation high-protection energy storage cabinet. Figures 1-3 The high-heat-dissipation high-protection energy storage cabinet comprises a cabinet body 1, the cabinet body 1 is provided with a battery compartment 2 and an outer circulation condensation compartment 3 which are independent of each other, a plurality of energy storage battery packs 4 are arranged in the battery compartment 2, an inner circulation condensation compartment 5 is arranged between the battery compartment 2 and the outer circulation condensation compartment 3, a dry cooler 7 is arranged in the inner circulation condensation compartment, and a centrifugal fan 8 is arranged for driving the battery compartment 2 to blow the dry cooler 7; the outer circulation condensation compartment 3 is provided with an outer circulation heat dissipation mechanism 9 for supplying low-temperature refrigerant to the dry cooler 7. That is, the heat generated by the energy storage battery pack 4 is transferred to the battery compartment 2 to form high-temperature hot air, the high-temperature hot air is extracted and then blows the surface of the dry cooler 7 under the action of the centrifugal fan 8, and at this time, the outer circulation heat dissipation mechanism 9 supplies low-temperature refrigerant into the pipeline of the dry cooler 7, so that the high-temperature hot air blown on the dry cooler 7 can be absorbed by the dry cooler 7 to form low-temperature cold air and then be blown to the battery compartment 2, thereby cooling the energy storage battery pack 4, at this time, the air in the battery compartment 2 only circulates in the inner part and does not contact the outside, thereby ensuring the heat dissipation effect and ensuring that the IP level reaches IP65 high protection through the inner and outer circulation air isolation.

[0032] Referring to Figures 4 to 5 The energy storage battery pack 4 comprises a mounting frame 41, a plurality of battery cells 42 are arranged in the mounting frame 41, and a heat dissipation aluminum plate 43 is arranged between adjacent two battery cells 42, so that the heat of the battery cell 42 can be quickly transferred to the heat dissipation aluminum plate 43 after the battery cell 42 is attached to the heat dissipation aluminum plate 43, and because the heat transfer efficiency is high, the heat can be quickly transferred to the surrounding air. The heat dissipation aluminum plate 43 is provided with a heat dissipation air duct 44 penetrating through the heat dissipation aluminum plate 43, and the mounting frame 41 is provided with a heat dissipation fan 45 blowing air along the direction of the heat dissipation air duct 44. Therefore, the heat dissipation fan 45 blows air to the heat dissipation air duct 44 to improve the heat convection efficiency, thereby ensuring the heat dissipation effect. The heat dissipation fan 45 and the plurality of battery cells 42 are provided with a wind deflector 46, so that the air flow is uniformly blown to the entire energy storage battery pack 4 under the action of the wind deflector 46, thereby ensuring the heat dissipation effect.

[0033] Back to Figure 3The outer circulation heat dissipation mechanism 9 includes a condenser 92 for supplying low-temperature refrigerant into the dry cooler 7, a refrigerant compression pump 91, a throttling element, and an axial flow fan. The refrigerant gas at high temperature and low pressure is compressed into gas at high temperature and high pressure by the refrigerant compression pump 91. The refrigerant gas at high temperature and high pressure enters the condenser 92, exchanges heat with the ambient air, releases heat and condenses into liquid at high pressure and normal temperature. The axial flow fan forces air to flow through the condenser 92 to take away heat. The refrigerant liquid at high pressure and normal temperature passes through the throttling device, and the pressure and temperature decrease to become liquid at low temperature and low pressure. The refrigerant liquid at low temperature and low pressure enters the dry cooler 7 (i.e., the evaporator of the four refrigeration components of the outer circulation heat dissipation mechanism 9), absorbs heat from the surrounding environment, and evaporates into gas at low temperature and low pressure. The centrifugal fan 8 in the inner circulation bin blows the air in the battery bin 2 through the dry cooler 7 to take away heat, thereby achieving heat dissipation of the air in the battery bin 2.

[0034] Back to Figure 2 The bottom of the battery bin 2 is provided with a self-induction fire extinguisher 6, so that the battery bin 2 can automatically power off and start the water-based fire extinguisher when a fire occurs in the battery bin 2.

[0035] The implementation principle of the high-heat-dissipation and high-protection energy storage cabinet according to an embodiment of the present application is as follows: by optimizing the air duct design and air isolation of the inner and outer circulation, the heat dissipation efficiency of the battery pack in the energy storage cabinet is significantly improved, and the stable operation of the equipment in a high-temperature environment is ensured. The air isolation design of the inner and outer circulation ensures that the IP level reaches IP65, and is suitable for harsh working conditions such as seashores, ports, and mines. The structure design is simple, the maintenance workload is small, the maintenance cycle is long, the requirements for maintenance equipment are low, and it is suitable for large-scale application.

[0036] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-heat-dissipation and high-protection energy storage cabinet, characterized in that: Including cabinet (1), the cabinet (1) is provided with mutually independent battery compartment (2) and outer circulating condensing compartment (3), the battery compartment (2) is provided with several energy storage battery pack (4) in, the battery compartment (2) is provided with inner circulating condensing compartment (5) with outer circulating condensing compartment (3), the inner circulating condensing compartment is provided with dry cooler (7), and centrifugal fan (8) for driving battery compartment (2) air purging dry cooler (7) is arranged; The outer circulating condensing compartment (3) is provided with outer circulating heat dissipation mechanism (9) for providing low-temperature refrigerant to the dry cooler (7).

2. The high heat dissipation and high protection energy storage cabinet according to claim 1, characterized in that: The energy storage battery pack (4) includes a mounting rack (41), a plurality of battery cells (42) are arranged in the mounting rack (41), a heat dissipation aluminum plate (43) is arranged between two adjacent battery cells (42), the heat dissipation aluminum plate (43) is provided with a heat dissipation air duct (44) penetrating through, and a heat dissipation fan (45) blowing air in the direction of the heat dissipation air duct (44) is arranged on the mounting rack (41).

3. The high heat dissipation and high protection energy storage cabinet according to claim 2, characterized in that: The heat dissipation fan (45) and the plurality of battery cells (42) are provided with a wind deflector (46).

4. The high heat dissipation and high protection energy storage cabinet according to claim 1, characterized in that: The outer circulating heat dissipation mechanism (9) includes a condenser (92) for supplying low-temperature refrigerant into the dry cooler (7), a refrigerant compression pump (91), a throttling element, and an axial flow fan (93).

5. The high heat dissipation and high protection energy storage cabinet according to claim 1, characterized in that: The bottom of the battery compartment (2) is provided with a self-induction fire extinguisher (6).

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