Energy storage system and wind generating set

Abstract

The utility model provides an energy storage system and a wind generating set. The energy storage system comprises a cabinet body, the cabinet body is provided with an energy storage unit storage area and an air return area which are adjacently arranged in the first horizontal direction, and at least two rows of energy storage unit storage racks arranged in the second horizontal direction at intervals are arranged in the energy storage unit storage area; ventilation channels extending in the height direction are arranged on the two sides, in the second horizontal direction, of each column of energy storage unit storage racks, and the ventilation channels can communicate with the air return area through the sides, facing the air return area, of the energy storage unit storage racks. The air supply pipeline is arranged at the upper part of the cabinet body, the air supply pipeline is provided with an air supply pipeline air inlet and a plurality of air supply pipeline air outlets communicated with the air supply pipeline air inlet, and the air supply pipeline air outlets and the ventilation channels are in one-to-one correspondence and are communicated with each other; the air-conditioning unit is arranged at the top of the cabinet body, an internal circulation air inlet of the air-conditioning unit is communicated with the air return area, and an internal circulation air outlet of the air-conditioning unit is communicated with the air supply pipeline air inlet. And the heat dissipation effect is good.

Description

Technical Field

[0001] The utility model relates to the field of energy storage equipment, in particular to an energy storage system and a wind turbine generator set using the energy storage system. Background Art

[0002] As the energy storage industry continues to increase its demand for battery charge and discharge rates, the heat dissipation requirements are also increasing. Effective heat dissipation in energy storage systems is crucial and directly determines their operability. Traditional heat dissipation methods utilize wall-mounted air conditioners, installed on the side walls, doors, or back panels of cabinets, to cool the batteries within. To prevent short circuits, air ducts are often long and complex, increasing the cost of energy storage systems. Furthermore, temperature uniformity is poor, resulting in significant temperature differences between batteries in different locations. Furthermore, energy storage systems occupy a large footprint and lack an aesthetic appeal. Utility Model Content

[0003] Therefore, an object of the present invention is to provide an energy storage system and a wind turbine generator set to solve at least one problem existing in the above-mentioned prior art or related art.

[0004] In one aspect, an embodiment of the present utility model provides an energy storage system, which includes: a cabinet body, the cabinet body having an energy storage unit storage area and a return air area adjacent to each other in a first horizontal direction, the energy storage unit storage area having at least two rows of energy storage unit storage racks spaced apart in a second horizontal direction, each row of energy storage unit storage racks having ventilation channels extending in a height direction on both sides of the second direction, the ventilation channels being able to communicate with the return air area through a side of the energy storage unit storage rack facing the return air area, the first horizontal direction and the second horizontal direction being perpendicular to each other; an air supply duct, arranged at the upper part of the cabinet body, the air supply duct having an air supply duct inlet and a plurality of air supply duct outlets connected to the air supply duct inlet, the air supply duct outlets corresponding to the ventilation channels one by one and connected to each other; an air conditioning unit, arranged at the top of the cabinet body, the shell of the air conditioning unit being provided with an internal circulation air inlet and an internal circulation air outlet, the internal circulation air inlet being connected to the return air area, and the internal circulation air outlet being connected to the air supply duct inlet.

[0005] Furthermore, in some embodiments, each column of energy storage unit storage racks includes a plurality of energy storage unit storage compartments arranged in the height direction, each energy storage unit storage compartment has a ventilation opening connected to the ventilation channel, and a portion of the plurality of ventilation openings is provided with a windshield structure to adjust the size of the ventilation opening.

[0006] Furthermore, in some embodiments, ventilation openings are provided on both sides of the energy storage unit storage compartment in the second horizontal direction, and the wind shielding structure is provided in the ventilation opening of at least one energy storage unit storage compartment near the upper portion among the plurality of energy storage unit storage compartments.

[0007] Furthermore, in some embodiments, the windshield structure is a windshield plate, and the windshield areas of the plurality of windshield plates gradually decrease from top to bottom in the height direction of the cabinet.

[0008] Furthermore, in some embodiments, the air outlet of the air supply duct extends along a first horizontal direction, and at least two partitions spaced apart along the first horizontal direction are provided in the air outlet of the air supply duct, and the at least two partitions divide the air outlet of the air supply duct into multiple sub-outlets.

[0009] Furthermore, in some embodiments, the energy storage unit storage area has two rows of energy storage unit storage racks, a ventilation channel is provided between the two rows of energy storage unit storage racks, and each side of the two rows of energy storage unit storage racks facing away from each other has a ventilation channel.

[0010] Furthermore, in some embodiments, a cabinet air inlet connected to an air inlet of an air supply duct is provided on the cabinet, and the cabinet air inlet and the internal circulation air outlet are plugged into each other.

[0011] Furthermore, in some embodiments, a cabinet air outlet communicating with the return air area is provided on the cabinet, and the cabinet air outlet and the internal circulation air inlet are plugged into each other.

[0012] Furthermore, in some embodiments, the edge of the cabinet air inlet protrudes toward the outside of the cabinet to form a first protrusion, and the edge of the internal circulation air outlet is recessed toward the inside of the air-conditioning unit to form a first recess, and the first protrusion is inserted into the first recess and contacts the inner wall of the first recess.

[0013] Furthermore, in some embodiments, the edge of the cabinet air outlet protrudes toward the outside of the cabinet to form a second protrusion, and the edge of the internal circulation air inlet is recessed toward the inside of the air-conditioning unit to form a second recess, and the second protrusion is inserted into the second recess and contacts the inner wall of the second recess.

[0014] Furthermore, in some embodiments, the energy storage system also includes: a return air duct, which is arranged in a cabinet, and a cabinet air outlet connected to the internal circulation air inlet is provided on the cabinet. The return air duct includes a funnel-shaped return air duct main body, and the funnel-shaped top opening forms a return air duct air outlet, the return air duct air outlet is connected to the cabinet air outlet, the funnel-shaped side has a return air duct air inlet connected to the return air area, and the funnel-shaped bottom has a drain outlet, the drain outlet is connected to the pipeline, and is connected to the outside of the cabinet through the pipeline.

[0015] Furthermore, in some embodiments, the air inlet of the return air duct is trumpet-shaped, and the opening of the air inlet of the return air duct gradually decreases from the outside of the return air duct to the inside of the return air duct.

[0016] Furthermore, in some embodiments, each column of energy storage unit storage racks has multiple fans on one side close to the return air area, and the fans are distributed one-to-one with the energy storage unit storage compartments. The fans are used to guide the wind in the ventilation channel into the return air area; wherein, the return air area and the ventilation channel are located on different sides of the energy storage unit storage racks.

[0017] Furthermore, in some embodiments, the energy storage system also includes an air-conditioning cover, which is arranged on the air-conditioning unit, and the side walls around the air-conditioning cover are aligned with the side walls of the cabinet. The air-conditioning cover is provided with a cover air inlet and a cover air outlet. The cover air inlet is connected to the external circulation air inlet of the air-conditioning unit for introducing external cold air into the air-conditioning unit, and the cover air outlet is connected to the external circulation air outlet of the air-conditioning unit for discharging hot air to the outside.

[0018] A second aspect of the present invention provides a wind turbine generator set, which includes an energy storage system according to any one of the above embodiments.

[0019] In the energy storage system provided by this embodiment, the cold air blown in by the air conditioning unit first flows into the ventilation channels on both sides of each energy storage unit storage rack, then flows to the return air area, and then returns to the air conditioning unit, achieving a circulation of cold air within the cabinet. The energy storage system has a relatively simple air duct structure and a reasonable air duct layout, which effectively achieves a uniform temperature. Moreover, the air conditioning unit is directly installed on the top of the cabinet, which is aesthetically pleasing and takes up little space, making it convenient to install multiple cabinets in parallel.

[0020] Additional aspects and / or advantages of the present general inventive concept will be set forth in part in the following description, and some will be clear from the description or may be learned through practice of the present general inventive concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects and features of the present invention will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 A schematic structural diagram of an energy storage system according to an embodiment of the present application is shown;

[0023] Figure 2 A schematic diagram showing the structure of an energy storage system according to an embodiment of the present application hidden behind an air conditioner cover is shown;

[0024] Figure 3 A schematic structural diagram of a cabinet according to an embodiment of the present application is shown;

[0025] Figure 4 A schematic diagram of the bottom structure of an air conditioner according to an embodiment of the present application is shown;

[0026] Figure 5 A schematic diagram of a front view of an energy storage system according to an embodiment of the present application is shown;

[0027] Figure 6 Shown Figure 5 Schematic cross-sectional view along the AA direction;

[0028] Figure 7 A schematic diagram showing the internal structure of an energy storage system according to an embodiment of the present application is shown;

[0029] Figure 8 A schematic diagram of the interior front view of an energy storage system according to an embodiment of the present application is shown;

[0030] Figure 9 A schematic diagram of an internal side view of an energy storage system according to an embodiment of the present application is shown;

[0031] Figure 10 A schematic structural diagram of an air supply duct according to an embodiment of the present application is shown;

[0032] Figure 11 A partial structural schematic diagram of an air supply duct according to an embodiment of the present application is shown;

[0033] Figure 12 A schematic diagram of the internal structure of an energy storage system according to an embodiment of the present application is shown;

[0034] Figure 13 A schematic structural diagram of a return air duct in a first horizontal direction according to an embodiment of the present application is shown;

[0035] Figure 14 A schematic structural diagram of a return air duct in a second horizontal direction according to an embodiment of the present application is shown;

[0036] Figure 15 A schematic top view of a return air duct according to an embodiment of the present application is shown;

[0037] Figure 16 A schematic structural diagram of a return air duct according to an embodiment of the present application is shown;

[0038] Figure 17 A schematic top view of an energy storage system according to an embodiment of the present application is shown with the nacelle cover hidden;

[0039] Figure 18 A side view schematic diagram of an energy storage system according to an embodiment of the present application is shown;

[0040] Figure 19 A rear view schematic diagram of an energy storage system according to an embodiment of the present application is shown;

[0041] Figure 20A schematic diagram showing a front view of an energy storage system according to another embodiment of the present application

[0042] Figure 21 A schematic structural diagram of an air conditioner in an inverted state according to another embodiment of the present application is shown;

[0043] Figure 22 A bottom view schematically shows an air conditioner according to another embodiment of the present application.

[0044] Figures 1 to 22 Description of Figure Numbers:

[0045] 10 Cabinet; 101 Cabinet air inlet; 102 Cabinet air outlet; 103 First protrusion; 104 Second protrusion; 110 Energy storage unit storage area; 111 Energy storage unit storage rack; 112 Energy storage unit storage compartment; 113 Ventilation channel; 114 Ventilation opening; 115 Wind shield structure; 116 Fan; 120 Return air area; 130 Air supply duct; 131 Air supply duct inlet; 132 Air supply duct outlet; 133 Partition; 140 Return air duct duct; 141 return air duct main body; 142 return air duct air outlet; 143 return air duct air inlet; 144 drain outlet; 150 connection part; 20 air conditioning unit; 210 internal circulation air inlet; 211 second recessed part, 220 internal circulation air outlet; 221 first recessed part, 230 connection piece; 240 external circulation air inlet; 250 external circulation air outlet; 30 air conditioning cover; 301 cover air inlet; 302 cover air outlet; 303 exhaust duct. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the utility model clearer, the technical solutions in the utility model will be clearly described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model. In addition, to the extent not contradictory, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] In the present invention, the term "and / or" includes any one of the associated listed items and any combination of any two or more. The terms "first" and "second" are used only to distinguish one member, component, region, layer or part from another member, component, region, layer or part for descriptive purposes and should not be understood as indicating or implying relative importance.

[0048] In the present invention, when an element such as a layer, a region or a substrate is described as being “on”, “connected to” or “coupled to” another element, the element may be directly “on”, “connected to” or “coupled to” the other element, or one or more other elements may be present therebetween. Conversely, when an element is described as being “directly on”, “directly connected to” or “directly coupled to” another element, no other elements may be present therebetween.

[0049] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "including" and "having" indicate the presence of the described features, quantities, operations, components, elements and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof. The term "plurality" represents any number of two and more than two.

[0050] In the present invention, the limitations of directional words such as "above", "below", "top" and "bottom" are based on the directions in the diagrams and are only for the convenience of description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0051] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art after understanding the present invention. Unless expressly defined otherwise herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present invention, and should not be interpreted in an idealized or overly formal manner.

[0052] The following will be combined Figures 1 to 22 An energy storage system provided by an embodiment of the present utility model is introduced.

[0053] like Figure 1 、 Figure 2 、 Figures 5 to 9As shown, an embodiment of one aspect of the present invention provides an energy storage system, which includes: a cabinet 10, the interior of the cabinet 10 includes an energy storage unit storage area 110 and a return air area 120 adjacently arranged in a first horizontal direction, the energy storage unit storage area 110 has at least two rows of energy storage unit storage racks 111 spaced apart in a second horizontal direction, and each row of energy storage unit storage racks 111 has ventilation channels 113 extending along the height direction of the cabinet 10 on both sides of the second horizontal direction, and the ventilation channels 113 can be connected to the return air area 120 through the energy storage unit storage racks 111. As an example, the first horizontal direction and the second horizontal direction are perpendicular to each other. Furthermore, the first horizontal direction can be the front-to-back direction of the cabinet 10, and the second horizontal direction can be the left-to-right direction of the cabinet 10.

[0054] like Figure 9 、 Figure 11 and Figure 11 As shown, the energy storage system according to the embodiment of the present application further includes: an air supply duct 130, which is arranged on the top of the cabinet 10, and the air supply duct 130 has an air supply duct air inlet 131 and a plurality of air supply duct air outlets 132 connected to the air supply duct air inlet 131, and the air supply duct air outlets 132 correspond to the ventilation channels 113 one by one and are connected to each other; an air conditioning unit 20, which is arranged on the top of the cabinet 10, and the housing of the air conditioning unit 20 is provided with an internal circulation air inlet 210 and an internal circulation air outlet 220 (refer to Figure 4 ), the internal circulation air inlet 210 is connected to the return air area 120, and the internal circulation air outlet 220 is connected to the air supply duct inlet 131.

[0055] According to the energy storage system provided in this embodiment, the cold air generated by the air-conditioning unit 20 enters the air supply duct 130 through the internal circulation air outlet 220, and then enters the ventilation channels 113 on both sides of each energy storage unit storage rack 111 through the diversion effect of the air supply duct 130. After passing through the energy storage unit storage rack 111 and cooling the energy storage units placed on the storage rack, the cold air flows toward the return air area 120, and then flows back to the air-conditioning unit 20 through the internal circulation air inlet 210 connected to the return air area 120, thereby realizing the circulation of cold air in the cabinet 10.

[0056] Through the diversion effect of the air supply duct 130, cold air can flow on both sides of each row of energy storage units, which is conducive to fully cooling each energy storage unit and helping to reduce the temperature difference between the energy storage units. Furthermore, the cold air generated by the air conditioning unit 20 enters the corresponding ventilation channel 113 through the multiple air supply duct outlets 132, so that the cold air is evenly distributed in the second horizontal direction, which helps to reduce the temperature difference between the energy storage units in the second horizontal direction.

[0057] According to the embodiment of the present application, the air duct structure of the energy storage system is relatively simple, the air duct layout is reasonable, the temperature uniformity effect is good, the strength requirement for the cabinet 10 is low, and the cost of the cabinet 10 can be reduced. Moreover, the air conditioning unit 20 is arranged on the top of the cabinet 10, which has good aesthetics, occupies little space, and occupies a small area, which is convenient for multiple cabinets 10 to be used in parallel. In specific applications, multiple energy storage systems can be arranged in a row or in a "田" grid to reduce the floor space. In addition, by arranging the air conditioning unit 20 on the top of the cabinet 10, while reducing the occupied space, cold air is supplied from above, which is conducive to the flow of cold air to the lower part of the cabinet 10, thereby improving the temperature uniformity effect of the energy storage unit in the height direction.

[0058] like Figure 5 and Figure 6 As shown, the first horizontal direction can be the front and rear direction of the cabinet 10. The internal area of ​​the cabinet 10 is divided into two parts, namely the energy storage unit storage area 110 and the return air area 120. The energy storage unit storage area 110 is arranged in the rear area of ​​the cabinet 10, and the return air area 120 is located in the front area of ​​the cabinet 10. In this way, when placing the cabinet of the energy storage system, the rear side of the energy storage system can be set close to the wall, which is conducive to space utilization.

[0059] Furthermore, if Figure 7 、 Figure 8 and Figure 12 As shown, as an example, the energy storage unit storage area 110 includes two rows of energy storage unit racks 111, with a ventilation channel 113 defined between the two rows of energy storage unit racks 111. Each row of energy storage unit racks 111 also includes a ventilation channel 113 on its outer side. Here, two adjacent energy storage unit racks 111 share a single ventilation channel 113, simplifying the air duct structure and improving the compactness of the cabinet 10. Furthermore, having a ventilation channel 113 on each side of each row of energy storage unit racks 111 increases the contact area between the energy storage units and the cold air, thereby improving heat dissipation.

[0060] Of course, in other examples, the energy storage unit storage area 110 may also have three or more rows of energy storage unit storage racks 111. Two adjacent energy storage unit storage racks 111 share a ventilation channel 113, and the two rows of energy storage unit storage racks 111 at both ends, facing away from each other, each have a ventilation channel 113.

[0061] like Figure 7 As shown, each column of energy storage unit storage racks 111 includes a plurality of energy storage unit storage compartments 112 arranged in the height direction, each energy storage unit storage compartment 112 has a ventilation opening 114 connected to a ventilation channel 113, and a portion of the plurality of ventilation openings 114 is provided with a windshield structure 115 to adjust the size of the ventilation opening 114.

[0062] The cold air generated by the air conditioning unit 20 is fed into the ventilation passage 113 extending along the height direction through the air supply duct 130. As the cold air flows downward along the ventilation passage 113, some of it flows into the energy storage unit storage compartment 112, cooling the energy storage units before entering the return air area 120. As the cold air flows downward, the amount of cold air flowing along the ventilation passage 113 decreases, resulting in insufficient cooling near the lower energy storage unit storage compartment 112, away from the air supply duct 130, and poor cooling effect. Therefore, in this embodiment, wind shielding structures 115 are provided at some of the ventilation openings 114 of the multiple energy storage unit storage compartments 112 arranged along the height direction. By adjusting the size of the ventilation openings 114 using the wind shielding structures 115, the amount of cold air entering the energy storage unit storage compartments 112 at different locations can be controlled, preventing a large amount of cold air from flowing through the upper energy storage units and causing insufficient cooling near the energy storage unit storage compartments 112 away from the air supply duct 130, thereby improving temperature uniformity.

[0063] like Figure 7 As shown, the wind shielding structure 115 is disposed in the ventilation opening 114 of at least one energy storage unit storage compartment 112 near the air supply duct 130 among the multiple energy storage unit storage compartments 112 .

[0064] Furthermore, when wind-shielding structures 115 are provided in at least two ventilation openings 114 near the upper part of the cabinet body 10, the wind-shielding areas of the multiple wind-shielding structures 115 gradually decrease from the direction of the air supply duct 130 to the direction away from the air supply duct 130, so that the cold air is more evenly distributed in the cabinet body 10.

[0065] As an example, the windshield structure 115 is a windshield, and the windshield area of ​​the multiple windshields gradually decreases from top to bottom in the height direction of the cabinet 10. This prevents a large amount of cold air from entering the upper energy storage unit storage compartment 112 as the cold air flows along the ventilation channel 113. This helps ensure that a portion of the cold air flows along the ventilation channel 113 into the lower energy storage unit storage compartment 112, thereby achieving a uniform temperature distribution and improving heat dissipation uniformity.

[0066] Furthermore, ventilation openings 114 are provided on both sides of the energy storage unit storage compartment 112 in the second horizontal direction. Since each row of energy storage unit storage racks 111 has ventilation channels 113 on both sides in the second horizontal direction, in this case, the windshield structure 115 can be provided in the ventilation opening 114 on one side of the energy storage unit storage compartment 112, or in the ventilation openings 114 on both sides of the energy storage unit storage compartment 112.

[0067] Furthermore, in some embodiments, Figures 9 to 11As shown, the air supply duct outlet 132 extends along the first horizontal direction, and at least two partitions 133 are arranged in the air supply duct outlet 132 and are spaced apart along the first horizontal direction. The at least two partitions 133 divide the air supply duct outlet 132 into multiple sub-outlets.

[0068] In these embodiments, the air supply duct outlet 132 is divided into multiple sub-outlets in the first horizontal direction, some of which are close to the return air area 120, and some of which are far away from the return air area 120. This is beneficial for the cold air to be evenly distributed in the ventilation channel 113 in the first horizontal direction, thereby facilitating the cold air to flow downward at multiple positions in the first horizontal direction, cooling the front and rear ends of the energy storage unit, and improving the temperature uniformity effect.

[0069] As an example, Figure 8 、 Figure 10 and Figure 11 As shown, when there are three ventilation channels 113, the air supply duct 130 includes an inverted U-shaped duct body. Three air supply duct outlets 132 are formed at the three vertically extending ends of the U-shaped duct body, communicating with the three ventilation channels 113 in the cabinet 10. The air supply duct inlet 131 is located at the top center of the inverted U-shaped duct. After cold air enters the air supply duct inlet 131, it is divided and flows to the three air supply duct outlets 132.

[0070] Of course, when there are two ventilation channels 113, the air supply duct 130 may also include a duct body in the shape of a Chinese character "匚" with an opening downward. The specific structure of the air supply duct 130 may be various and is not limited to the above example.

[0071] The following describes the connection between the cabinet 10 and the air conditioning unit 20 with reference to the accompanying drawings. Figure 3 and Figure 4 As shown, the cabinet 10 is provided with a cabinet air inlet 101 connected to the air supply duct inlet 131, and the cabinet air inlet 101 and the internal circulation air outlet 220 at the bottom of the air conditioning unit 20 are plugged into each other. The plug-in connection can improve the connection stability and prevent the cold air from leaking out.

[0072] Furthermore, if Figure 3 and Figure 4 As shown, a cabinet air outlet 102 communicating with a return air area 120 inside the cabinet 10 is provided on the top wall of the cabinet 10 , and the cabinet air outlet 102 and the internal circulation air inlet 210 at the bottom of the air conditioning unit 20 are plugged into each other.

[0073] As an example, Figure 3 、 Figure 4 、 Figure 21 and Figure 22As shown, the edge of the cabinet air inlet 101 protrudes toward the exterior of the cabinet 10 to form a first protrusion 103, while the edge of the internal circulation air outlet 220 is recessed toward the interior of the air conditioning unit 20 to form a first recessed portion 221. The first protrusion 103 is inserted into the first recessed portion 221 and contacts the inner wall of the first recessed portion 221. Similarly, the edge of the cabinet air outlet 102 protrudes toward the exterior of the cabinet 10 to form a second protrusion 104, while the edge of the internal circulation air inlet 210 is recessed toward the interior of the air conditioning unit 20 to form a second recessed portion 211. The second protrusion 104 is inserted into the second recessed portion 211 and contacts the inner wall of the second recessed portion 211. Here, the cabinet 10 and the air conditioning unit 20 are assembled in a "chimney"-like manner, with the "chimney" at the top of the cabinet 10 inserted into the recessed space of the air conditioning unit 20. This fully increases the contact area between the supply and return air of the air conditioning unit 20 and the cabinet 10, improving connection stability and gas sealing.

[0074] In addition, if Figure 4 As shown, filters can also be set at the internal circulation air outlet 220 and the internal circulation air inlet 210, and filters can also be set at the cabinet air inlet 101 and the cabinet air outlet 102 to prevent external impurities from entering the corresponding air-conditioning unit 20 or cabinet 10.

[0075] Furthermore, in some embodiments, Figure 6 、 Figures 13 to 16 As shown, the energy storage system also includes a return air duct 140, which is arranged in the cabinet 10 and located at the upper part of the cabinet 10. The cabinet 10 is provided with a cabinet air outlet 102 connected to the internal circulation air inlet 210. The return air duct 140 includes a return air duct main body 141, and the top opening of the return air duct main body 141 forms a return air duct air outlet 142. The return air duct 140 is installed to the lower surface of the top wall of the cabinet 10, so that the return air duct air outlet 142 and the cabinet air outlet 102 are aligned with each other and connected. One side of the return air duct main body 141 has a lateral opening, which forms a return air duct air inlet 143 connected to the return air area 120, so that the hot air flow in the cabinet 10 can re-enter the air-conditioning unit 20 through the return air duct 140.

[0076] According to an embodiment of the present application, a drain port 144 is provided at the bottom of the return air duct body 141 . The drain port 144 is connected to a drain pipe, and the condensed water in the return air duct 140 is discharged to the outside of the cabinet 10 through the drain pipe.

[0077] Figure 6The direction indicated by the middle arrow roughly represents the direction of air flow. After the cold air enters the cabinet 10 from the cabinet air inlet 101, it will flow downward along the ventilation channel 113 as a whole. In the process of flowing downward, it will gradually split and enter the energy storage unit storage compartment 112 through the ventilation opening 114, and flow to the return air area 120 along the first horizontal direction, and then flow upward from the cabinet air outlet 102, and return to the interior of the air-conditioning unit 20 through the return air duct 140. The hot air returning to the interior of the air-conditioning unit 20 will be cooled by the evaporator, and after becoming cold air, it will re-enter the cabinet 10 from the internal circulation air outlet 220 of the air-conditioning unit 20 and the cabinet air inlet 101, realizing the circulation of cold air in the cabinet 10 through the energy storage unit storage area, circulating cooling, and effectively dissipating heat from the energy storage unit.

[0078] During the hot air backflow process, the hot air flow may come into contact with components with lower temperatures (such as the evaporator), resulting in condensed water. Therefore, the return air duct 140 can be used as a water tray to collect condensed water, and a drain outlet is provided at the bottom of the return air duct 140, so that the condensed water can be discharged with the help of the drain pipe. Therefore, the return air duct 140 can collect condensed water and also serve as a drain, thereby reducing the probability of condensed water entering the cabinet 10, which is beneficial to the safe operation of the energy storage system. As an example, the return air duct 140 can be designed to be in the shape of a water tray.

[0079] Furthermore, if Figures 13 to 16 As shown, the return air duct 140 includes a funnel-shaped main portion 141, which facilitates the smooth flow of collected condensed water along the funnel-shaped sidewalls toward a drain outlet 144, where it is then discharged outside the cabinet 10 through the drain duct. The drain duct can be a flexible hose for easy connection and layout. Furthermore, the return air duct inlet 143 is located on the side of the return air duct 140, adopting a side air intake method, which is more conducive to collecting and draining condensed water than a bottom air intake method.

[0080] Furthermore, if Figure 15 and Figure 16 As shown, the return air duct inlet 143 is trumpet-shaped, and the opening of the return air duct inlet 143 gradually decreases from the outside of the return air duct 140 to the inside of the return air duct 140. This increases the area of ​​the return air duct connected to the return air area 120 and facilitates the return of hot air in the return air area 120. When the hot air enters the return air duct 140, the cross-sectional area decreases, the gas flow rate increases, and the hot air impacts the side wall of the return air duct 140 at a higher speed, which facilitates the condensation of water vapor in the hot air and its subsequent flow to the drain outlet 144.

[0081] Furthermore, the height of the return air duct 140 can be between 10 mm and 30 mm, such as 15 mm, 20 mm, etc. Of course, it can also be greater than 30 mm, such as 40 mm, so as to receive more condensed water.

[0082] Furthermore, a water level detector is provided in the return air duct 140. When the water level detector detects that the water level reaches a set height, the energy storage system is controlled to shut down, so that personnel can arrive at the site for timely inspection and maintenance.

[0083] Although the return air duct 140 in the embodiment of the present application is described with reference to the above specific shape as an example, the shape of the return air duct body 141 and the shape of the return air duct air inlet 143 are not limited to the above example.

[0084] Figure 12 FIG1 shows a schematic diagram of a cabinet 10 provided with multiple energy storage units. In order to more clearly illustrate the internal structure, the external structure of the cabinet 10 is omitted. Figure 12 As shown, each energy storage unit has a fan 116 on one side close to the return air area 120. The fan 116 can drive the air flow in the ventilation channel 113 to flow through the energy storage unit, cool the energy storage unit, and then discharge it from the front side of the energy storage unit into the return air area 120.

[0085] In some embodiments, as Figure 1 、 Figure 2 、 Figure 7 、 Figure 18 、 Figure 19 and Figure 20 As shown, the energy storage system also includes an air conditioning cover 30, which is mounted over the air conditioning unit 20, with the side walls of the cover 30 aligned with the side walls of the cabinet 10. The cover 30 is provided with an air inlet 301 and an air outlet 302. The air inlet 301 communicates with the external circulation air inlet 240 of the air conditioning unit 20, and the air outlet 302 communicates with the external circulation air outlet 250 of the air conditioning unit 20, for discharging hot air to the outside. The design of the air conditioning cover 30 prevents the air conditioning unit 20 from being exposed, thereby improving the appearance.

[0086] When the energy storage system is working, the refrigerant in the air-conditioning unit 20 will circulate through the evaporator and the condenser. The refrigerant absorbs heat at the evaporator and exchanges heat with the circulating air to produce cold air. The refrigerant releases heat at the condenser, and the heat is taken away by the external circulating air. The cold air generated by flowing through the evaporator will enter the cabinet 10 to cool the energy storage unit, and then flow back to the air-conditioning unit 20 through the return air area 120, and become cold air again at the evaporator. At the same time, the outside air enters the external circulation air inlet 240 of the air-conditioning cover 30 through the cover air inlet 301 of the air-conditioning cover 30, and flows through the condenser. After taking away the heat of the condenser, it is discharged to the outside through the external circulation air outlet 250 and the cover air outlet 302, which can continuously cool the condenser and ensure the stable operation of the energy storage system.

[0087] As an example, the cover air outlet 302 is set on a cover side wall of the air-conditioning cover 30 in the first horizontal direction, and the cover air inlet 301 is set on at least two side walls of the air-conditioning cover 30, so that air can be taken in from multiple sides and exhausted from one side, thereby ensuring the heat dissipation efficiency of the energy storage system.

[0088] As an example, Figure 1 、 Figure 5 、 Figure 7 and Figure 19 As shown, when the first horizontal direction is the front-to-back direction of the cabinet 10 , the cover air outlet 302 is set on the front side of the air conditioning cover 30 , and the cover air inlet 301 is set on the left and right sides of the air conditioning cover 30 .

[0089] As an example, Figure 20 As shown, the cover air inlet 301 and the cover air outlet 302 are both arranged on the front side of the air conditioner cover 30. In this case, multiple energy storage systems can be placed side by side or arranged in a field shape.

[0090] In order to avoid the airflow in the air conditioner cover 30 from interfering with each other, Figure 17 As shown, an exhaust duct 303 can be set between the external circulation air outlet 250 of the air-conditioning unit 20 and the cover air outlet 302, and the exhaust duct 303 is used to connect the external circulation air outlet 250 and the cover air outlet 302 to avoid the air entering the air-conditioning cover 30 and the hot air that takes away the heat of the condenser from crossing each other.

[0091] Of course, the cover air outlet 302 can also be set on the top of the air conditioning cover 30, and the cover air inlet 301 is set on the side wall of the air conditioning cover 30. The cover air inlet 301 and the cover air outlet 302 can be set at corresponding positions as needed.

[0092] Furthermore, in some embodiments, a plurality of connectors 230 are provided at the bottom of the air conditioning unit 20, for example, Figure 4 and Figure 22 As shown, connectors 230 are provided at the four corners of the bottom of the air conditioning unit 20. Figure 3 、 Figure 17 and Figure 22 As shown, a connecting portion 150 is provided at a position on the top of the cabinet 10 corresponding to the connecting member 230 , and a plurality of connecting members 230 can be connected to the connecting portion 150 , thereby fixing the air conditioning unit 20 on the top of the cabinet 10 .

[0093] The energy storage system provided by this utility model utilizes a roof-mounted air conditioning unit 20, which features a simple structure, easy installation, and facilitates on-site replacement and disassembly. It is highly reliable and versatile, and can be used in parallel with multiple energy storage systems or in a "field" configuration, reducing costs and floor space, while improving market competitiveness.

[0094] According to the embodiments of this application, reference Figures 6 to 9 The air supply duct 130 is in the shape of an inverted "mountain" and uses partitions 133 to guide the flow, so that the cold air can be transmitted from top to bottom. The transmission path is direct and the line is short, which improves the cooling efficiency. The two gaps between the three ventilation channels 113 are the installation positions of the battery cluster, which provide appropriate cooling capacity to the left and right sides of the battery cluster to achieve the purpose of reducing the battery temperature. Figure 7 As shown, in order to reduce the difference in cooling capacity between the upper and lower battery packs, baffles of different heights are added to the sides of the battery pack to limit the amount of cold air entering each battery pack. The height of the baffle is adjusted according to the distance from the air-conditioning unit 20, thereby reducing the temperature difference between the upper and lower batteries and improving temperature uniformity.

[0095] A second embodiment of the present invention provides a wind turbine generator set, comprising an energy storage system according to any of the above embodiments. The wind turbine generator set provided by the present invention, by virtue of comprising the energy storage system according to any of the above embodiments, has the beneficial effects of any of the above embodiments, which will not be further elaborated herein.

[0096] Furthermore, the wind turbine generator set also includes a wind turbine generator, which is electrically connected to an energy storage system, and can use the energy storage system to store the electricity generated by the wind turbine generator. The energy storage system can be installed on the ground or inside the tower, and the location of the energy storage system can be set as needed.

[0097] Although the embodiments of the present invention have been described in detail above, those skilled in the art may make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It should be understood that, in the opinion of those skilled in the art, such modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. An energy storage system, characterized in that: The energy storage system comprises: A cabinet (10), the cabinet (10) having an energy storage unit storage area (110) and a return air area (120) adjacently arranged in a first horizontal direction, the energy storage unit storage area (110) having at least two rows of energy storage unit storage racks (111) spaced apart in a second horizontal direction, each row of the energy storage unit storage racks (111) having ventilation channels (113) extending in a height direction on both sides in the second horizontal direction, the ventilation channels (113) being able to communicate with the return air area (120) through a side of the energy storage unit storage racks (111) facing the return air area (120), the first horizontal direction and the second horizontal direction being perpendicular to each other; An air supply duct (130) is arranged at the upper portion of the cabinet (10), the air supply duct (130) comprising an air supply duct inlet (131) and a plurality of air supply duct outlets (132) communicating with the air supply duct inlet (131), the air supply duct outlets (132) corresponding one-to-one to the ventilation passages (113) and communicating with each other; An air conditioning unit (20) is arranged on the top of the cabinet (10), and an internal circulation air inlet (210) and an internal circulation air outlet (220) are provided on the shell of the air conditioning unit (20), the internal circulation air inlet (210) is connected to the return air area (120), and the internal circulation air outlet (220) is connected to the air supply duct inlet (131).

2. The energy storage system according to claim 1, characterized in that Each row of the energy storage unit storage racks (111) comprises a plurality of energy storage unit storage compartments (112) arranged in the height direction; each of the energy storage unit storage compartments (112) has a ventilation opening (114) communicating with the ventilation channel (113); a portion of the plurality of ventilation openings (114) is provided with a windshield structure (115) to adjust the size of the ventilation openings (114).

3. The energy storage system according to claim 2, characterized in that: The ventilation openings (114) are arranged on both sides of the energy storage unit storage compartment (112) in a second horizontal direction, and the wind shielding structure (115) is arranged in the ventilation opening (114) of the energy storage unit storage compartment (112) close to the upper portion among the plurality of energy storage unit storage compartments (112).

4. The energy storage system according to claim 2, characterized in that: The wind shielding structure (115) is a wind shield, and the wind shielding areas of the plurality of wind shields gradually decrease from top to bottom in the height direction of the cabinet (10).

5. The energy storage system according to claim 1, characterized in that: The air supply duct outlet (132) extends along a first horizontal direction, and at least two partitions (133) spaced apart along the first horizontal direction are provided in the air supply duct outlet (132), and the at least two partitions (133) divide the air supply duct outlet (132) into a plurality of sub-outlets.

6. The energy storage system according to any one of claims 1 to 5, characterized in that: The energy storage unit storage area (110) comprises two rows of energy storage unit storage racks (111), a ventilation passage (113) is provided between the two rows of energy storage unit storage racks (111), and each row of energy storage unit storage racks (111) has a ventilation passage (113) on the sides facing away from each other.

7. The energy storage system according to any one of claims 1 to 5, characterized in that: The cabinet (10) is provided with a cabinet air inlet (101) communicating with the air supply duct air inlet (131), and the cabinet air inlet (101) and the internal circulation air outlet (220) are plugged into each other; and / or The cabinet (10) is provided with a cabinet air outlet (102) that is in communication with the return air area (120), and the cabinet air outlet (102) and the internal circulation air inlet (210) are plugged into each other.

8. The energy storage system according to claim 7, characterized in that: The edge of the cabinet air inlet (101) protrudes toward the outside of the cabinet (10) to form a first protruding portion (103), and the edge of the internal circulation air outlet (220) is recessed toward the inside of the air-conditioning unit (20) to form a first recessed portion (221), and the first protruding portion (103) is inserted into the first recessed portion (221) and contacts the inner wall of the first recessed portion (221); and / or The edge of the cabinet air outlet (102) protrudes toward the outside of the cabinet (10) to form a second protruding portion (104), and the edge of the internal circulation air inlet (210) is recessed toward the inside of the air-conditioning unit (20) to form a second recessed portion (211), and the second protruding portion (104) is inserted into the second recessed portion (211) and contacts the inner wall of the second recessed portion (211).

9. The energy storage system according to any one of claims 1 to 5, characterized in that: The energy storage system further includes: A return air duct (140) is arranged in the cabinet (10), and a cabinet air outlet (102) communicating with the internal circulation air inlet (210) is provided on the cabinet (10). The return air duct (140) includes a funnel-shaped return air duct main body (141), the top opening of the funnel forms a return air duct air outlet (142), the return air duct air outlet (142) is communicated with the cabinet air outlet (102), the side of the funnel has a return air duct air inlet (143) communicating with the return air area (120), and the bottom of the funnel has a drain outlet (144), the drain outlet (144) is connected to a pipeline, and is communicated with the outside of the cabinet (10) through the pipeline.

10. The energy storage system according to claim 9, characterized in that: The return air duct air inlet (143) is trumpet-shaped, and the opening of the return air duct air inlet (143) gradually decreases from the outside of the return air duct (140) to the inside of the return air duct (140).

11. The energy storage system according to any one of claims 2 to 4, characterized in that: Each row of the energy storage unit storage racks (111) has a plurality of fans (116) on one side close to the return air area (120), the fans (116) being distributed in a one-to-one correspondence with the energy storage unit storage compartments (112), and the fans (116) being used to guide the air in the ventilation channel (113) into the return air area (120); The return air area (120) and the ventilation channel (113) are located on different sides of the energy storage unit storage rack (111).

12. The energy storage system according to any one of claims 1 to 5, characterized in that: The energy storage system further comprises an air conditioning cover (30), the air conditioning cover (30) being arranged on the air conditioning unit (20), and the side walls around the air conditioning cover (30) being aligned with the side walls of the cabinet (10), the air conditioning cover (30) being provided with a cover air inlet (301) and a cover air outlet (302), the cover air inlet (301) being in communication with the external circulation air inlet (240) of the air conditioning unit (20) for introducing external cold air into the air conditioning unit (20), and the cover air outlet (302) being in communication with the external circulation air outlet (250) of the air conditioning unit (20) for discharging hot air to the outside.

13. A wind turbine generator set, characterized in that: The wind turbine generator set includes the energy storage system according to any one of claims 1 to 12.

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