Energy storage device and power supply equipment

Abstract

The present invention discloses an energy storage device and a power supply device. The energy storage device includes a power source and a cabinet. The power source includes at least two batteries. The cabinet is provided with a receiving cavity, and the power source is arranged in the receiving cavity. The cabinet includes a first side plate and a second side plate oppositely arranged with respect to the power source. The power source is arranged between the first side plate and the second side plate. A first air duct is formed in the first side plate, and a second air duct is formed by a spaced arrangement between the second side plate and the power source. The first air duct is provided with an air outlet, and a gap is formed between two adjacent batteries or gaps are formed between two adjacent batteries and between the battery and the bottom wall of the receiving cavity, and one air outlet corresponds to one gap. The second air duct communicates with the corresponding air outlet through the gap. The air in the first air duct is discharged to the gap through the air outlet to cool the battery. Since the air outlet corresponds to the gap, delivering air to each corresponding gap through each air outlet can play a heat dissipation role for each battery, and the uniformity of battery heat dissipation can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply equipment, and particularly to an energy storage device and a power supply equipment. Background Art

[0002] A UPS (Uninterruptible Power Supply) is an uninterruptible power supply containing an energy storage cabinet, which is mainly used to provide uninterrupted electric energy for some equipment with high requirements for power stability. When the energy storage cabinet performs high-rate charge and discharge operations, the battery will release a large amount of heat, so it is necessary to dissipate heat from the battery.

[0003] However, when the traditional energy storage cabinet dissipates heat, there is often uneven heat dissipation between the batteries in the energy storage cabinet, which affects the service life of the battery cells. Summary of the Invention

[0004] Based on this, in view of the problem that when the traditional energy storage cabinet dissipates heat, there is often uneven heat dissipation between the batteries in the energy storage cabinet, which affects the service life of the battery cells, an energy storage device and a power supply equipment are proposed. When the energy storage device and the power supply equipment are in use, they can dissipate heat from the battery evenly.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to an energy storage device, including: a power supply and a cabinet. The power supply includes at least two batteries. The cabinet is provided with a receiving cavity. The power supply is arranged in the receiving cavity. The cabinet includes a first side plate and a second side plate oppositely arranged with respect to the power supply. The power supply is arranged between the first side plate and the second side plate. A first air duct is formed in the first side plate. A second air duct is formed at an interval between the second side plate and the power supply. The first air duct is provided with an air outlet. A gap is formed between two adjacent batteries, or gaps are formed between two adjacent batteries and between the battery and the bottom wall of the receiving cavity, and one air outlet corresponds to one gap. The second air duct communicates with the corresponding air outlet through the gap.

[0007] The technical solutions are further described below:

[0008] In one embodiment, the first side plate includes a side plate body and a baffle. The baffle is connected to the side plate body and encloses the first air duct with the side plate body. The baffle is provided with the air outlet.

[0009] In one embodiment, the number of the air outlets is at least two, the first air duct extends along the height direction of the first side plate, and the air outlets are arranged such that the air volume discharged from each of the air outlets is the same in the flow direction of the first air duct. In this way, the air volume discharged from each of the air outlets can be the same along the transmission direction of the first air duct.

[0010] In one embodiment, the energy storage device further includes a wind guide plate, the wind guide plate is connected to the baffle and forms the wind guide air duct with the baffle, the wind guide air duct is arranged in the first air duct, the first air duct is communicated with the air outlet through the wind guide air duct, and one wind guide plate corresponds to one air outlet. In this way, the air in the first air duct is transported to the air outlet through the wind guide air duct, and the wind guide air duct plays a guiding role.

[0011] In one embodiment, the number of the wind guide air ducts is at least two, one air outlet corresponds to one wind guide air duct, and all the wind guide air ducts are arranged such that the air volume guided is the same in the flow direction of the first air duct.

[0012] In one embodiment, the air inlet of the wind guide air duct gradually increases in the flow direction of the first air duct, and the volume of the wind guide air duct gradually increases. In this way, since the air volume near the air inlet of the first air duct is larger, the volume of the wind guide air duct near the air inlet of the first air duct is set to be smaller, and the air inlet of the wind guide air duct is also set to be smaller. The air volume near the air outlet of the first air duct is smaller, so the volume of the wind guide air duct near the air outlet of the first air duct is set to be larger, and the air inlet of the wind guide air duct is also set to be larger. At this time, along the transmission direction of the first air duct, the air volume guided by each wind guide air duct is the same, and then the air is transported into each corresponding gap through each air outlet, which can dissipate heat from each battery, and thus the uniformity of battery heat dissipation can be achieved.

[0013] In one embodiment, the battery is a rechargeable battery.

[0014] In one embodiment, the cabinet further includes a cabinet body, the cabinet body is provided with the accommodation cavity, a first opening and a second opening communicated with the accommodation cavity, the first side plate is rotatably connected to the cabinet body for opening or closing the first opening, the second side plate is rotatably connected to the cabinet body for opening or closing the second opening, and when the second side plate closes the second opening, the second side plate is spaced apart from the power supply to form the second air duct.

[0015] In one embodiment, a heat dissipation air inlet and a return air outlet are provided at the top of the cabinet body. The heat dissipation air inlet is used to communicate with the air inlet of the first air duct, and the return air outlet is used to communicate with the air outlet of the second air duct.

[0016] In one embodiment, the energy storage device further includes a refrigerating member. The refrigerating member is arranged at the top of the cabinet body. The air outlet of the refrigerating member is communicated with the heat dissipation air inlet, and the air inlet of the refrigerating member is communicated with the return air outlet. In this way, through its own refrigerating effect, the refrigerating member sends cold air into the first air duct through the heat dissipation air inlet, and then transports it to the air outlet through the first air duct to dissipate heat from the battery. Further, arranging the refrigerating member at the top of the cabinet body can avoid the refrigerating member occupying the space of the accommodation cavity, reduce the floor area of the cabinet, and increase the space utilization rate.

[0017] On the other hand, the present application also relates to a power supply device including the energy storage device in any of the above embodiments.

[0018] When the above energy storage device and power supply device are in use, the air in the first air duct is discharged through the air outlet into the gap to cool the battery. Since the air outlet corresponds to the gap, sending air into each corresponding gap through each air outlet can play a role in dissipating heat from each battery, and thus the uniformity of battery heat dissipation can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings used in the embodiment descriptions. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] In addition, the drawings are not drawn to a scale of 1:1, and the relative sizes of the various elements are only schematically drawn in the drawings and not necessarily drawn to the actual scale.

[0022] Figure 1 It is a schematic structural diagram of the energy storage device in an embodiment;

[0023] Figure 2 It is a cross-sectional view of the energy storage device in an embodiment;

[0024] Figure 3 It is a schematic structural diagram of the first side plate in an embodiment;

[0025] Figure 4 Partial structural schematic diagram of the first side plate in an embodiment;

[0026] Figure 5 is Figure 4 Partial enlarged schematic diagram of A in

[0027] Figure 6 Structural schematic diagram of the refrigeration component in an embodiment.

[0028] Explanation of reference numerals:

[0029] 10. Energy storage device; 100. Power supply; 110. Battery; 112. Gap; 200. Cabinet; 210. Cabinet body; 212. Top end of the cabinet body; 214. First opening; 216. Second opening; 220. First side plate; 222. Side plate body; 224. Baffle; 2242. Air exhaust port; 226. Air guiding duct; 2262. Air inlet of the air guiding duct; 228. First air duct; 2282. Air inlet of the first air duct; 230. Second side plate; 232. Second air duct; 240. Air guiding plate; 300. Refrigeration component; 310. Air inlet of the refrigeration component; 320. Air outlet of the refrigeration component. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] During heat dissipation of traditional energy storage cabinets, there is often a problem that the heat dissipation between batteries in the energy storage cabinet is uneven, affecting the service life of the battery cells. Based on this, the present application proposes an energy storage device 10, which can dissipate heat from the battery 110 evenly during use.

[0034] Please refer to Figure 1 and Figure 2 , specifically, the energy storage device 10 in one embodiment includes a power supply 100 and a cabinet 200. The power supply 100 includes at least two batteries 110. The cabinet 200 is provided with a receiving cavity, and the power supply 100 is disposed in the receiving cavity. The cabinet 200 includes a first side plate 220 and a second side plate 230 disposed opposite to the power supply 100. The power supply 100 is disposed between the first side plate 220 and the second side plate 230. A first air duct 228 is formed in the first side plate 220. A second air duct 232 is formed at an interval between the second side plate 230 and the power supply 100. The first air duct 228 is provided with an air outlet 2242. A gap 112 is formed between two adjacent batteries 110, and an air outlet 2242 corresponds to a gap 112. The second air duct 232 communicates with the corresponding air outlet 2242 through the gap 112; or, in another embodiment, gaps 112 are formed both between two adjacent batteries 110 and between the battery 110 and the bottom wall of the receiving cavity. The number of air outlets 2242 is at least two, and an air outlet 2242 corresponds to a gap 112. The second air duct 232 communicates with the corresponding air outlet 2242 through the gap 112. Specifically, the installation manner of the batteries 110 in the power supply 100 is not limited as long as a gap 112 can be formed between the batteries 110.

[0035] Please refer to Figure 1 and Figure 2 , when the energy storage device 10 is in use, the air in the first air duct 228 is discharged through the air outlet 2242 into the gap 112 to cool the battery 110. Since the air outlet 2242 corresponds to the gap 112, the air is conveyed into each corresponding gap 112 through each air outlet 2242, which can play a role in dissipating heat from each battery 110, and thus the uniformity of heat dissipation from the battery 110 can be achieved.

[0036] Optionally, in one embodiment, the battery 110 is a rechargeable battery 110. Delivering air to the gap 112 through the air outlet 2242 can reduce the heat generated by the rechargeable battery 110 during charging and discharging.

[0037] Further, please refer to Figure 3 and Figure 4 , the first side plate 220 includes a side plate body 222 and a baffle 224. The baffle 224 is connected to the side plate body 222 and forms a first air duct 228 between the baffle 224 and the side plate body 222. The baffle 224 is provided with an air outlet 2242. Specifically, please refer to Figure 3 and Figure 4 , the number of the air outlets 2242 is at least two, and they are spaced along the height direction of the baffle 224. One air outlet 2242 corresponds to one gap 112.

[0038] Since there is resistance in the process of air transmission, that is, the air volume near the air inlet 2282 of the first air duct is larger, and the air volume near the air outlet of the first air duct 228 is relatively smaller. Please refer to Figure 2 , the first air duct 228 extends along the height direction of the first side plate 220 (such as the double-arrow direction in Figure 2 ). In this way, when the air is transported in the first air duct 228 from the air inlet of the first air duct 228 to the air outlet of the first air duct 228, the overall air volume gradually attenuates. In order to ensure the uniformity of heat dissipation for each battery 110, the air outlets 2242 are set such that the air volumes discharged from each air outlet 2242 are the same in the flow direction of the first air duct 228. In this way, when air is delivered to each corresponding gap 112 through each air outlet 2242, it can play a role in uniformly dissipating heat for each battery 110.

[0039] In one embodiment, in order to make the air volumes discharged from each air outlet 2242 the same along the transmission direction of the first air duct 228 (transmitting along the direction from the air inlet of the first air duct 228 to the air outlet of the first air duct 228), the sizes of the air outlets 2242 can be set differently and gradually increase along the transmission direction of the first air duct 228.

[0040] Further, the energy storage device 10 further includes a wind guiding plate 240. The wind guiding plate 240 is connected to the baffle 224 and forms a wind guiding air duct 226 with the baffle 224. The wind guiding air duct 226 is arranged in the first air duct 228. The first air duct 228 is communicated with the air outlet 2242 through the wind guiding air duct 226. One wind guiding plate 240 corresponds to one air outlet 2242. In this way, the air in the first air duct 228 is transported to the air outlet 2242 through the wind guiding air duct 226. The wind guiding air duct 226 plays a guiding role, facilitating the air in the first air duct 228 to be discharged into the air outlet 2242.

[0041] Specifically, please refer to Figure 5 , Figure 5 which is Figure 4 a partial enlarged schematic view of the position A in Figure 5 . As can be seen from Figure 5 , the air deflector 240 is disposed in the first air duct 228. The air deflector 240 is an arc-shaped plate as a whole. One end of the air deflector 240 is connected to the baffle 224, and the other end is spaced from the baffle 224 to form the air guiding duct 226.

[0042] Please refer to Figure 5 . In order to make the air volume discharged from each air outlet 2242 along the transmission direction of the first air duct 228 the same, in another embodiment, the number of the air guiding ducts 226 is at least two. One air guiding duct 226 corresponds to one air outlet 2242. All the air guiding ducts 226 are arranged to guide the same air volume along the flow direction of the first air duct 228. Thus, when the air volume guided in the air guiding duct 226 is the same, the air volume discharged along the air outlet 2242 is also the same. Further, the air delivered to each corresponding gap 112 through each air outlet 2242 can play a role in cooling each battery 110, and thus the uniformity of cooling the battery 110 can be achieved.

[0043] Specifically, since the air volume gradually attenuates when the air is transmitted in the transmission direction of the first air duct 228, to ensure that all the air guiding ducts 226 are arranged to guide the same air volume along the flow direction of the first air duct 228, and to make the air volume guided in each air guiding duct 226 along the transmission direction of the first air duct 228 the same, please refer to Figure 5 . In this embodiment, the air inlet 2262 of the air guiding duct is arranged to gradually increase along the flow direction of the first air duct 228, and the volume of the air guiding duct 226 is gradually increased. Thus, because the air volume near the air inlet 2282 of the first air duct is large, the volume of the air guiding duct 226 near the air inlet 2282 of the first air duct is set to be small, and the air inlet 2262 of the air guiding duct is also set to be small. At the same time, since the air volume near the air outlet of the first air duct 228 is small, the volume of the air guiding duct 226 near the air outlet of the first air duct 228 is set to be large, and the air inlet 2262 of the air guiding duct is also set to be large. At this time, along the transmission direction of the first air duct 228 (such as Figure 5 the direction indicated by the straight arrow in Figure 5 ), the air volume guided by each air guiding duct 226 is the same. Further, the air delivered to each corresponding gap 112 through each air outlet 2242 can play a role in cooling each battery 110, and thus the uniformity of cooling the battery 110 can be achieved.

[0044] Please refer to Figure 1 , Figure 1As a schematic structural diagram of the energy storage device 10, on the basis of any of the above embodiments, the cabinet 200 further includes a cabinet body 210. The cabinet body 210 is provided with a receiving cavity and a first opening 214 and a second opening 216 communicating with the receiving cavity. The first side plate 220 is rotatably connected to the cabinet body 210 for opening or closing the first opening 214, and the second side plate 230 is rotatably connected to the cabinet body 210 for opening or closing the second opening 216. When the second side plate 230 closes the second opening 216, the second side plate 230 is spaced apart from the power supply 100 to form a second air duct 232.

[0045] Please refer to Figure 1 and Figure 6 , Figure 6 As a schematic structural diagram of the refrigerating member 300, the top end 212 of the cabinet body is provided with a heat dissipation air inlet and a return air outlet. The energy storage device 10 further includes a refrigerating member 300. The refrigerating member 300 is disposed at the top end 212 of the cabinet body. The air outlet 320 of the refrigerating member communicates with the heat dissipation air inlet, and the air inlet 310 of the refrigerating member communicates with the return air outlet. The heat dissipation air inlet is used to communicate with the air inlet 2282 of the first air duct, and the return air outlet is used to communicate with the air outlet of the second air duct 232.

[0046] Please refer to Figure 1 , the refrigerating member 300, through its own refrigerating effect, sends cold air into the first air duct 228 through the heat dissipation air inlet, and then transports it to the air outlet 2242 through the first air duct 228 to dissipate heat from the battery 110. Further, disposing the refrigerating member 300 at the top end 212 of the cabinet body can prevent the refrigerating member 300 from occupying the space of the receiving cavity, reduce the floor area of the cabinet 200, and increase the space utilization rate.

[0047] Further, please refer to Figure 1 , Figure 2 and Figure 6 , both the first air duct 228 and the second air duct 232 are along the height direction of the cabinet 200 ( Figure 2extends in the direction of the double arrow in the middle. When the heat dissipation air inlet and the air return opening are arranged at the top 212 of the cabinet body, at this time, the overall direction of the cold air is to first transport the cold air along the top 212 of the cabinet body to the bottom of the cabinet body. After the cold air in the first air duct 228 is discharged to the gap 112 through the air outlet 2242, it is transported to the second air duct 232 after heat exchange with the battery 110, and is transported from the bottom to the top in the second air duct 232 until it reaches the air return opening, and enters the air inlet 310 of the refrigerating member along the air return opening; further, when the first side plate 220 closes the first opening 214, the air inlet 2282 of the first air duct just abuts and cooperates with the heat dissipation air inlet to achieve communication. When the second side plate 230 closes the second opening 216, the air outlet of the second air duct 232 abuts and cooperates with the air return opening to achieve communication. In this way, when the energy storage device 10 dissipates heat, the cooling air is transmitted inside the accommodation cavity, and there is no need to provide heat dissipation holes on the first side plate 220 and the second side plate 230, effectively preventing dust from entering the accommodation cavity.

[0048] In one embodiment, the air conditioner further includes a blower. Under the action of the blower, the air is transported along the second air duct 232 to the air return opening and then enters the air inlet 310 of the refrigerating member.

[0049] Optionally, the refrigerating member 300 may be an air conditioner.

[0050] It should be noted that the energy storage device 10 involved in any of the above embodiments may be, but is not limited to, a server cabinet 200, a power distribution cabinet, or other cabinets 200 with large heat generation that require heat dissipation.

[0051] In addition, an embodiment also relates to a power supply device, including the energy storage device 10 in any of the above embodiments.

[0052] Since the power supply device includes the energy storage device 10 in any of the above embodiments, when the power supply device is in use, the air in the first air duct 228 is discharged to the gap 112 through the air outlet 2242 to cool the battery 110. Since the air outlet 2242 corresponds to the gap 112, transporting air into each corresponding gap 112 through each air outlet 2242 can dissipate heat from each battery 110, and thus the uniformity of heat dissipation of the battery 110 can be achieved.

[0053] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0055] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0056] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0057] The above embodiments only represent several embodiments of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

1. An energy storage device, characterized in that, it includes: a power supply, the power supply includes at least two batteries; and a cabinet, the cabinet is provided with a receiving cavity, the power supply is arranged in the receiving cavity, the cabinet includes a first side plate and a second side plate oppositely arranged with respect to the power supply, the power supply is arranged between the first side plate and the second side plate, a first air duct is formed in the first side plate, a second air duct is formed at an interval between the second side plate and the power supply, the first air duct is provided with an air outlet, a gap is formed between two adjacent batteries or gaps are formed between two adjacent batteries and between the battery and the bottom wall of the receiving cavity, and one air outlet corresponds to one gap, and the second air duct communicates with the corresponding air outlet through the gap; the first side plate includes a side plate body and a baffle, the baffle is connected to the side plate body and encloses the first air duct with the side plate body, and the baffle is provided with the air outlet; the number of the air outlets is at least two, the first air duct extends along the height direction of the first side plate, and the air outlets are arranged such that the air volume discharged along each air outlet is the same in the flow direction of the first air duct; wherein, the energy storage device further includes a wind guiding plate, the wind guiding plate is connected to the baffle and forms a wind guiding air duct with the baffle, the wind guiding air duct is arranged in the first air duct, the first air duct communicates with the air outlet through the wind guiding air duct, and one wind guiding plate corresponds to one air outlet.

2. The energy storage device according to claim 1, characterized in that, the number of the wind guiding air ducts is at least two, one air outlet corresponds to one wind guiding air duct, and all the wind guiding air ducts are arranged such that the air volume guided is the same in the flow direction of the first air duct.

3. The energy storage device according to claim 2, characterized in that, the air inlet of the wind guiding air duct gradually increases in the flow direction of the first air duct, and the volume of the wind guiding air duct gradually increases.

4. The energy storage device according to claim 1, characterized in that, the battery is a rechargeable battery.

5. The energy storage device according to any one of claims 1 to 4, characterized in that, the cabinet further includes a cabinet body, the cabinet body is provided with the receiving cavity and a first opening and a second opening communicated with the receiving cavity, the first side plate is rotatably connected to the cabinet body for opening or closing the first opening, the second side plate is rotatably connected to the cabinet body for opening or closing the second opening, and when the second side plate closes the second opening, a second air duct is formed at an interval between the second side plate and the power supply.

6. The energy storage device according to claim 5, characterized in that, a heat dissipation air inlet and a return air outlet are provided at the top end of the cabinet body, the heat dissipation air inlet is used for communicating with the air inlet of the first air duct, and the return air outlet is used for communicating with the air outlet of the second air duct.

7. The energy storage device according to claim 6, characterized in that, It further includes a refrigerating component, which is arranged at the top of the cabinet body. The air outlet of the refrigerating component is communicated with the heat dissipation air inlet, and the air inlet of the refrigerating component is communicated with the air return port.

8. A power supply device characterized in that it includes the energy storage device according to any one of claims 1 to 7.

Images