Energy storage cabinet

Abstract

The present invention discloses an energy storage cabinet, comprising: a housing; a plurality of battery modules, the plurality of battery modules are arranged in the housing, the plurality of battery modules are stacked in the up and down direction, and a first air duct is arranged between two adjacent battery modules; a heat dissipation module, the heat dissipation module is arranged in the housing and is spaced from the battery modules, the heat dissipation module includes: an air conditioner and an air duct member, the air conditioner is arranged on the front side of the battery modules, one end of the air duct member is communicated with the air conditioner and the other end extends to the rear side of the battery modules. By arranging the first air duct between two adjacent battery modules, there is no need to arrange an air duct member for guiding air flow in the energy storage cabinet, which simplifies the energy storage cabinet, saves costs, and at the same time, the air flow directly contacts the battery modules to make the heat dissipation more sufficient, and improves the space utilization rate of the energy storage cabinet, thereby enhancing the volume energy density of the energy storage cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage cabinets, and more particularly to an energy storage cabinet. Background Art

[0002] During the charging and discharging processes of new energy batteries, a part of the energy is lost by itself, and this part of the energy is ultimately converted into heat and dissipated. In order to ensure the continuous and efficient operation of the batteries, it is necessary to quickly transfer the heat generated by the batteries through certain technical means. Air cooling is one of the commonly used heat dissipation methods in the energy storage industry, that is, the air cooled by the air conditioner is guided through the air duct and blown onto the surface of the batteries to lower the temperature of the batteries. Therefore, the quality of the air duct design is directly related to the uniformity of battery heat dissipation.

[0003] In the related art, usually taking the module as a unit, the battery modules are placed in the battery box. There is a gap between the battery module and the wall surface of the battery box, and this gap is the heat dissipation air duct. The heat dissipation process of the battery is achieved by the cold air flowing in a certain direction to take away the heat around the battery and lower the surface temperature of the battery.

[0004] However, when the air flow passes through the battery box to form an air duct inside the battery box, the space utilization rate is not high, which may lead to a decrease in the volume energy density of the entire product. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides an energy storage cabinet. By providing a first air duct between two adjacent battery modules, there is no need to provide an air duct member for guiding air flow in the energy storage cabinet, which simplifies the energy storage cabinet, saves costs, and at the same time enables the air flow to directly contact the battery modules, making the heat dissipation more sufficient.

[0006] The energy storage cabinet according to an embodiment of the present invention includes: a housing; a plurality of battery modules, the plurality of battery modules are arranged in the housing, the plurality of battery modules are stacked in the vertical direction, and a first air duct is provided between two adjacent battery modules; a heat dissipation module, the heat dissipation module is arranged in the housing and is spaced from the battery modules, the heat dissipation module includes: an air conditioner and an air duct member, the air conditioner is arranged on the front side of the battery modules, one end of the air duct member is communicated with the air conditioner, and the other end extends to the rear side of the battery modules.

[0007] The energy storage cabinet according to an embodiment of the present invention, by providing a first air duct between two adjacent battery modules, there is no need to provide an air duct member for guiding air flow in the energy storage cabinet, which simplifies the energy storage cabinet, saves costs, and at the same time enables the air flow to directly contact the battery modules, making the heat dissipation more sufficient, and improving the space utilization rate of the energy storage cabinet, thereby enhancing the volume energy density of the energy storage cabinet.

[0008] According to some embodiments of the present invention, the energy storage cabinet further includes: a plurality of flow guides, at least two of the flow guides are arranged between two adjacent battery modules, any two of the flow guides are arranged opposite to each other and the distance between the two flow guides gradually decreases in the direction toward the air conditioner.

[0009] According to some embodiments of the present invention, an angle between the guide member and the flow direction of the airflow in the first air duct is α, and α satisfies the relationship: 0°≤α≤45°.

[0010] According to some embodiments of the present invention, the guide member is a straight plate or a curved plate.

[0011] According to some embodiments of the present invention, the energy storage cabinet further includes: a plurality of bottom plates, the bottom plates being arranged between two adjacent battery modules, the bottom plates forming the first air duct; and the energy storage cabinet further includes: a connecting member, the connecting member being fixed on the bottom plate, and a plurality of the guide members being arranged on the connecting member at intervals.

[0012] According to some embodiments of the present invention, a cross-sectional area of ​​the duct member gradually increases toward a side facing away from the air conditioner.

[0013] According to some embodiments of the present invention, at least two second air ducts are arranged between the plurality of battery modules and the housing, and the at least two second air ducts extend in the front-to-rear direction and are spaced apart in the left-to-right direction.

[0014] According to some embodiments of the present invention, the energy storage cabinet further includes: a base and a connecting frame, the base is arranged below the shell, the connecting frame and the base are fixed and the plurality of battery modules are fixedly connected to the connecting frame, and the air duct member is arranged on the top of the connecting frame.

[0015] According to some embodiments of the present invention, the energy storage cabinet further includes: two seals, which are sandwiched between the connecting frame and the shell and spaced apart in the left-right direction.

[0016] According to some embodiments of the present invention, the air conditioner includes: an air inlet and an air outlet, the air outlet is connected to one end of the duct member, and the air inlet is arranged below the air outlet and corresponds to a plurality of the first air ducts.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is an exploded view of an energy storage cabinet according to an embodiment of the present invention;

[0020] Figure 2 is an exploded view of an energy storage cabinet according to an embodiment of the present invention;

[0021] Figure 3 is a sectional view of an energy storage cabinet according to an embodiment of the present invention from one angle;

[0022] Figure 4 is a schematic diagram of the flow direction of the air flow inside the energy storage cabinet according to an embodiment of the present invention;

[0023] Figure 5 is another sectional view of the energy storage cabinet according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 100, energy storage cabinet;

[0026] 10, housing;

[0027] 20, battery module; 21, first air duct;

[0028] 30, heat dissipation module; 31, air conditioner; 32, air duct member;

[0029] 40, flow guiding member; 50, connecting member; 60, base; 70, connecting frame; 80, sealing member. Detailed implementation manners

[0030] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0031] Reference will be made below to Figures 1 - 5 describe the energy storage cabinet 100 according to an embodiment of the present invention.

[0032] Referring to Figures 1 - 5 As shown, the energy storage cabinet 100 according to an embodiment of the present invention includes: a housing 10, a plurality of battery modules 20, and a heat dissipation module 30.

[0033] Among them, the housing 10 is integrally formed by molding or die-casting. The material can be selected from aluminum alloy, carbon steel, or composite non-metallic materials that meet outdoor requirements. The housing 10 does not bear the main load during hoisting and transportation. Its main functions are for appearance, waterproofing, corrosion resistance, etc. That is to say, the housing 10 can be a non-metallic material. The non-metallic material is light in weight. Specifically, when the housing 10 is a non-metallic material, its weight is one-third of the weight of the housing 10 when it is a sheet metal material, thus solving the problem of the overweight of the energy storage cabinet 100 and greatly increasing the weight ratio of the battery module 20.

[0034] In addition, a plurality of battery modules 20 are arranged in the housing 10. The plurality of battery modules 20 are stacked in the up-and-down direction, and a first air duct 21 is arranged between two adjacent battery modules 20. The heat dissipation module 30 is arranged in the housing 10, and the heat dissipation module 30 and the battery modules 20 are arranged at intervals. The heat dissipation module 30 includes: an air conditioner 31 and an air duct member 32. The air conditioner 31 is arranged on the front side of the battery modules 20. One end of the air duct member 32 is communicated with the air conditioner 31, and the other end of the air duct member 32 extends to the rear side of the battery modules 20. That is, a first air duct 21 is formed between two adjacent battery modules 20. After the air flow flows out of the air conditioner 31, it passes through the air duct member 32 at the top of the battery modules 20 and flows downward from the front side of the battery modules 20. During the process of the air flow flowing on the front side of the battery modules 20, it gradually flows into the first air duct 21 between the battery modules 20. The air flow entering the first air duct 21 between the battery modules 20 takes away the heat released by the battery modules 20 and finally flows to the air conditioner 31 to realize the heat dissipation process.

[0035] That is, a first air duct 21 is formed between two adjacent battery modules 20, and there is no need to additionally arrange an air duct member 32 for guiding air flow in the energy storage cabinet 100, which simplifies the energy storage cabinet 100, saves costs, and at the same time, the air flow directly contacts the battery modules 20 to make the heat dissipation more sufficient, and improves the space utilization rate of the energy storage cabinet 100, thereby increasing the volume energy density of the energy storage cabinet 100.

[0036] Of course, the air conditioner 31 is not limited to dissipating heat from the energy storage cabinet 100. When the temperature is relatively low, the air conditioner 31 can blow out a relatively high-temperature air flow through the air duct member 32, so as to heat the battery modules 20.

[0037] Therefore, by arranging the first air duct 21 between two adjacent battery modules 20, there is no need to arrange an air duct member 32 for guiding air flow in the energy storage cabinet 100, which simplifies the energy storage cabinet 100, saves costs, and at the same time, the air flow directly contacts the battery modules 20 to make the heat dissipation more sufficient, and improves the space utilization rate of the energy storage cabinet 100, thereby increasing the volume energy density of the energy storage cabinet 100.

[0038] As shown in the figure, the energy storage cabinet 100 further includes: a plurality of flow guiding members 40. At least two flow guiding members 40 are arranged between adjacent two battery modules 20. Any two flow guiding members 40 are arranged oppositely, and the distance between the two flow guiding members 40 gradually decreases in the direction towards the air conditioner 31. In this way, the flow guiding members 40 are arranged between adjacent two battery modules 20, that is, the flow guiding members 40 are arranged in the first air duct 21, so that the air flow directions are different, and thus the air pressure differences of the air flow are different. Specifically, at the rear of the housing 10, the air flow flows from top to bottom. At the beginning, the air flow velocity is high, the dynamic pressure is large, and the static pressure is small. Therefore, it is easy to have a low flow rate in the upper first air duct 21, and even a backflow phenomenon occurs. Thus, by adding flow guiding members 40 at an angle to the air flow direction in the air duct, using the "Tesla valve" phenomenon, the pressure drop of the air flow from the rear of the housing 10 to the front of the housing 10 is less than the pressure drop from the front of the housing 10 to the rear of the housing 10, that is, the pressure drop of the forward air flow is less than the pressure drop of the reverse air flow, so as to achieve the purpose of preventing backflow.

[0039] Thus, by arranging a plurality of flow guiding members 40, backflow will not occur in the stacked first air ducts 21, that is, air flow will pass through each of the first air ducts 21, and finally the temperature distribution of each layer of battery modules 20 will be uniform.

[0040] Specifically, referring to Figure 2 and Figure 5 as shown, the included angle between the flow guiding member 40 and the air flow direction in the first air duct 21 is α, and α satisfies the relational expression: 0° ≤ α ≤ 45°. With such a setting, the included angle between the flow guiding member 40 and the air flow direction in the first air duct 21 is set between 0 - 45°, so that the inclination angle of the flow guiding member 40 relative to the front-back direction can be adjusted according to the size of the housing 10, thereby reasonably utilizing the structural design of the flow guiding member 40 to improve the effect of preventing backflow. And when the inclination angle of the flow guiding member 40 relative to the front-back direction is greater than 45°, at this time, the angle between the flow guiding member 40 and the air flow direction is too large, that is, the flow guiding member 40 will hinder the air flow, which will affect the air flow.

[0041] In some embodiments of the present invention, the flow guiding member 40 can be a straight plate or a curved plate. Among them, when the flow guiding member 40 is a straight plate, it is convenient for the arrangement and production of the flow guiding member 40, and thus effectively reduces the production difficulty of the energy storage cabinet 100. And when the flow guiding member 40 is arc-shaped, at this time, the shape of the flow guiding member 40 is closer to the shape of the "Tesla valve", so that the air flow velocity from front to back can be increased, and thus the heat exchange effect of the energy storage cabinet 100 can be improved.

[0042] And, referring to Figure 5As shown, there can be multiple sets of flow guiding members 40. That is, two opposite flow guiding members 40 form a set, and multiple sets of flow guiding members 40 are arranged at intervals in the front-rear direction. This can enable the air flow to fully utilize the "Tesla valve" phenomenon when flowing in the first air duct 21, thereby effectively increasing the flow rate of the air flow.

[0043] In addition, the energy storage cabinet 100 further includes: a plurality of bottom plates. The bottom plates are arranged between adjacent two battery modules 20, and the bottom plates form the first air duct 21. That is, by arranging the bottom plates between adjacent two battery modules 20, in this way, the bottom plates can separate adjacent two battery modules 20, and, a first air duct 21 is formed on the bottom plates, thereby facilitating the flow of air between adjacent two battery modules 20. Of course, in the left-right direction, there can be two bottom plates, and the two bottom plates are sandwiched between adjacent two battery modules 20, and a first air duct 21 can be formed between the two bottom plates.

[0044] Referring to Figure 2 and Figure 5 As shown, and the energy storage cabinet 100 further includes: a connecting member 50. The connecting member 50 is fixed on the bottom plate, and multiple flow guiding members 40 are arranged at intervals on the connecting member 50. In this way, the flow guiding members 40 are fixed in the first air duct 21 by arranging the connecting member 50. Specifically, the connecting member 50 is a pull rod, and multiple flow guiding members 40 are fixed on the pull rod, and both ends of the pull rod are fixedly connected to the bottom plate. Among them, the pull rod can be directly placed on the bottom plate, and the pull rod is fixed by the mutual abutment of the bottom plate and the battery module 20. Of course, through holes can also be provided on the bottom plate, and both ends of the pull rod are fixed in the through holes, and in this way, the fixation of the pull rod can also be achieved.

[0045] Among them, referring to Figure 1 and Figure 2 As shown, the cross-sectional area of the air duct member 32 gradually increases toward the side away from the air conditioner 31. That is, the air duct member 32 is in a flared form in the front-rear direction. That is, after the air flow comes out of the air conditioner 31, the flow path becomes wider when passing through the air duct member 32, so that the speed of the air flow gradually decreases. This structure can convert the dynamic pressure of the air flow into static pressure, reduce the local resistance loss during the process of the air flow flowing downward from the top of the battery module 20, and finally make the temperature distribution of each layer of battery modules 20 uniform.

[0046] And, there are at least two second air ducts provided between the multiple battery modules 20 and the housing 10. The at least two second air ducts extend in the front-rear direction, and the at least two second air ducts are arranged at intervals in the left-right direction. In this way, second air ducts are also formed between the left and right sides of the battery module 20 and the housing 10. The setting of the second air ducts can reduce the air flow resistance, enabling the air flow to quickly return to the air conditioner 31, thereby reducing the working pressure of the air conditioner 31.

[0047] And, as Figure 1 and Figure 2As shown in the figure, the energy storage cabinet 100 further includes: a base 60 and a connecting frame 70. The base 60 is disposed below the housing 10. The connecting frame 70 is fixed to the base 60, and a plurality of battery modules 20 are fixedly connected to the connecting frame 70. The air duct member 32 is disposed on the top of the connecting frame 70. Among them, the base 60 bears the weight of the entire energy storage cabinet 100 during static or hoisting. Also, the connecting frame 70 is fixedly connected to the base 60. In this way, when the energy storage cabinet 100 is hoisted by the hoisting part, a forklift or other mechanical equipment drives the connecting frame 70, and the connecting frame 70 and the base 60 are integrated, so that the base 60 can move together with the connecting member 50. Moreover, a plurality of battery modules 20 and the housing 10 are both fixed on the base 60, so that the overall movement of the energy storage cabinet 100 can be realized.

[0048] In addition, the air duct member 32 is erected on the top of the connecting frame 70, so that the assembly stability of the air duct member 32 can be improved through the connecting frame 70, thereby improving the overall stability inside the energy storage cabinet 100.

[0049] Of course, the battery module 20 is also fixed on the connecting frame 70, that is, the connection stability of the battery module 20 is improved through the connecting frame 70.

[0050] In addition, as Figure 5 shown in the figure, the energy storage cabinet 100 further includes: two sealing members 80. The two sealing members 80 are clamped between the connecting frame 70 and the housing 10 and are spaced apart in the left-right direction. Thus, the sealing member 80 is provided between the connecting frame 70 and the housing 10, so that a cavity can be formed between the sealing member 80 and the housing 10, so that the air flow blown out by the air duct member 32 can enter the first air duct 21 in the up-down direction, avoiding the air flow from directly flowing out from the left and right sides and returning to the air conditioner 31 to form an air flow short circuit.

[0051] Among them, the sealing member 80 can be disposed at the rear side of the housing 10. That is, after the air flow comes out of the air duct member 32, a cavity can be formed between the two sealing members 80 and the rear housing 10, so as to facilitate the air flow to sequentially enter different first air ducts 21 in the up-down direction, and this can avoid the air flow from directly flowing out from the left and right sides and returning to the air conditioner 31 to form an air flow short circuit. Of course, the sealing member 80 can also be disposed at the front side of the housing 10, and this can also avoid the air flow from directly entering the air conditioner 31 without flowing through the first air duct 21. Further, sealing members 80 are disposed on both the front and rear sides of the housing 10, so that the sealing performance of the cavity can be improved, so that the air flow all flows through the first air duct 21, and further improve the heat dissipation effect of the energy storage cabinet 100.

[0052] Specifically, the sealing member 80 is a sealing baffle disposed inside the housing 10.

[0053] In addition, the air conditioner 31 includes an air inlet and an air outlet. The air outlet is connected to one end of the air duct member 32. The air inlet is arranged below the air outlet and corresponds to a plurality of first air ducts 21. In this way, the air inlet and the air outlet are provided on the air conditioner 31. Among them, the air outlet is used to communicate with the air duct member 32, that is, the heat exchange air generated by the air conditioner 31 can be blown out from the air outlet. And, an air inlet is arranged below the air inlet. The air inlet can correspond to a plurality of first air ducts 21, that is, the heat exchange air flows through the first air ducts 21 from front to back and then returns to the air conditioner 31 from the air inlet. In this way, an air flow circulation is formed inside the energy storage cabinet 100 without the intervention of external air flow, so that the air conditioner 31 does not need to operate continuously, thereby effectively reducing the energy consumption of the energy storage cabinet 100.

[0054] And, a door body is provided on the housing 10. The door body is hinged to the housing 10, and the air conditioner 31 is arranged on the door body, that is, the energy storage cabinet 100 can be repaired by opening the door body.

[0055] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings, and is 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.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A energy storage cabinet (100), characterized in that, Comprising: A housing (10); A plurality of battery modules (20), the plurality of battery modules (20) are arranged inside the housing (10), the plurality of battery modules (20) are stacked in the vertical direction, and a first air duct (21) is arranged between two adjacent battery modules (20); A heat dissipation module (30), the heat dissipation module (30) is arranged inside the housing (10) and is spaced from the battery module (20), the heat dissipation module (30) includes: an air conditioner (31) and an air duct member (32), the air conditioner (31) is arranged on the front side of the battery module (20), one end of the air duct member (32) is communicated with the air conditioner (31) and the other end extends to the rear side of the battery module (20); It further includes: a plurality of flow guiding members (40), at least two flow guiding members (40) are arranged between two adjacent battery modules (20), any two flow guiding members (40) are arranged oppositely, and the distance between the two flow guiding members (40) gradually decreases in the direction towards the air conditioner (31); It further includes: a base (60) and a connecting frame (70), the base (60) is arranged below the housing (10), the connecting frame (70) is fixed to the base (60), and the plurality of battery modules (20) are fixedly connected to the connecting frame (70), and the air duct member (32) is arranged on the top of the connecting frame (70); It further includes: two sealing members (80), the two sealing members (80) are clamped between the connecting frame (70) and the housing (10) and are spaced in the left-right direction.

2. The energy storage cabinet (100) according to claim 1, wherein The included angle between the flow guiding member (40) and the flow direction of the air flow in the first air duct (21) is α, and α satisfies the relation: 0°≤α≤45°.

3. The energy storage cabinet (100) according to claim 1, characterized in that, The flow guiding member (40) is a straight plate or a curved plate.

4. The energy storage cabinet (100) according to claim 1, characterized in that, It further includes: A plurality of bottom plates, the bottom plates are arranged between two adjacent battery modules (20), and the bottom plates form the first air duct (21); And, The energy storage cabinet (100) further includes: a connecting member (50), the connecting member (50) is fixed on the bottom plate, and a plurality of flow guiding members (40) are arranged on the connecting member (50) at intervals.

5. The energy storage cabinet (100) according to claim 1, characterized in that, The cross-sectional area of the air duct member (32) gradually increases towards the side away from the air conditioner (31).

6. The energy storage cabinet (100) according to claim 1, characterized in that, At least two second air ducts are arranged between the plurality of battery modules (20) and the housing (10), the at least two second air ducts extend in the front-rear direction and are spaced in the left-right direction.

7. The energy storage cabinet (100) according to claim 1, wherein, The air conditioner (31) includes: an air inlet and an air outlet, the air outlet is connected to one end of the air duct member (32), and the air inlet is arranged below the air outlet and corresponds to the plurality of first air ducts (21).

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