Heat dissipation air duct structure for energy storage

Abstract

The utility model provides a heat dissipation air duct structure for energy storage, which belongs to the technical field of energy storage equipment and comprises a partition plate, the partition plate is arranged between two adjacent battery cells, a plurality of first supporting ribs are abutted between the partition plate and the battery cells on two sides, the first supporting ribs are horizontally arranged and are arranged at intervals from top to bottom, and a plurality of second supporting ribs are arranged between the partition plate and the battery cells on two sides. A heat dissipation air channel is formed between every two adjacent first supporting ribs located on the same side. The heat dissipation air duct structure for energy storage provided by the utility model can prevent the battery cell from bulging and prevent the heat dissipation air duct from becoming narrow, so that the heat dissipation air duct can be unobstructed for a long time, and the heat dissipation effect of the battery cell is kept in a better state.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage devices, and more specifically, it relates to a heat dissipation air duct structure for energy storage. Background Technique

[0002] With the rise of the new energy industry, electrochemical energy storage systems, as new energy storage devices, have received extensive attention. Currently, the key restricting the development of electrochemical energy storage systems lies in energy storage batteries, and the thermal management problem of energy storage batteries is a key factor determining their service performance and safety. A good thermal management method is a key factor to ensure the good operation of the energy storage system.

[0003] Currently, traditional energy storage batteries usually include multiple cell groups. Each cell group includes multiple sequentially arranged aluminum square shell cells, and a certain gap distance is reserved between two adjacent cells as a forced ventilation heat dissipation air duct. When the cells work, the heat generated is conducted to the surface of the cell shell, and natural wind flows through the heat dissipation air duct and contacts the cell shell for heat exchange to cool the cells and keep the cells at a certain temperature point. Although the above means help the cells dissipate heat, due to the certain thickness of the cells, the temperature of the electrodes in the middle of the cells is the highest, and there is a certain thermal resistance in transferring to the outer surface of the aluminum shell. Over time, the cells may bulge, narrowing the heat dissipation air duct between the cells, resulting in poor ventilation, affecting the heat dissipation effect of the cells, and ultimately causing the cells to be discarded due to temperature imbalance. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heat dissipation air duct structure for energy storage, aiming to solve the problem of poor heat dissipation effect of the cells.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a heat dissipation air duct structure for energy storage, including a partition. The partition is arranged between two adjacent cells, and a first support rib is abutted between the partition and the cells on both sides. The first support rib is horizontally arranged and the number is multiple. The multiple first support ribs are arranged at intervals from top to bottom, and a heat dissipation air duct is formed between two adjacent first support ribs on the same side.

[0006] In a possible implementation manner, the first support ribs on both sides of the partition are symmetrically arranged and integrally processed with the partition.

[0007] In a possible implementation manner, second support ribs are connected to both the top and the bottom of the partition. The second support ribs are abutted between two adjacent cells, and an adhesive layer is provided on the end surface of the second support rib facing the cell.

[0008] In a possible implementation manner, a weight reduction groove is provided on the end surface of the second support rib away from the partition.

[0009] In a possible implementation, a plurality of reinforcing ribs are provided in the weight-reducing groove, and the reinforcing ribs are connected between two side walls of the weight-reducing groove, and the plurality of reinforcing ribs are arranged at intervals along the length direction of the weight-reducing groove.

[0010] In a possible implementation, a perforation group is provided on the partition plate, and the perforation group is located between two adjacent first support ribs. The perforation group includes a plurality of communication holes penetrating through the partition plate, and the plurality of communication holes are arranged in the horizontal direction, and the communication holes in two adjacent perforation groups are arranged staggeredly.

[0011] In a possible implementation, drainage sections are provided at both ends of the first support rib, and the drainage sections are inclined from the inside to the outside and away from the side wall of the heat dissipation air duct.

[0012] In a possible implementation, the width of the first support rib gradually increases from both ends to the middle.

[0013] In a possible implementation, the height of the first support rib is between 4-5 mm.

[0014] In a possible implementation, both the partition plate and the first support rib are plastic parts.

[0015] The beneficial effect of a heat dissipation air duct structure for energy storage provided by the present utility model is as follows: Compared with the prior art, the heat dissipation air duct structure for energy storage of the present utility model is provided with a partition plate between two battery cells, and a plurality of first support ribs are abutted between the partition plate and the battery cells, and the plurality of first support ribs are arranged at intervals, so as to form a heat dissipation air duct between two adjacent support ribs, and natural wind exchanges heat with the battery cells through the heat dissipation air duct, thereby cooling the battery cells. The provided partition plate and the first support ribs are abutted between two adjacent battery cells to form a support between the two battery cells, which can prevent the battery cells from bulging, and thus also avoids the problem that the heat dissipation air duct becomes narrow due to the bulging and deformation of the battery cells, so that the heat dissipation air duct can be persistently unobstructed, and the heat dissipation effect of the battery cells is maintained in a better state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a heat dissipation air duct structure for energy storage provided by an embodiment of the present utility model;

[0018] Figure 2 Structural schematic diagram of the partition provided by an embodiment of the present utility model;

[0019] Figure 3 Front view of the partition provided by an embodiment of the present utility model;

[0020] Figure 4 Top view of the partition provided by an embodiment of the present utility model;

[0021] Figure 5 Left view of the partition provided by an embodiment of the present utility model;

[0022] Figure 6 Front view of the partition provided by other embodiments of the present utility model.

[0023] Explanation of reference numerals:

[0024] 1, battery cell; 2, partition; 21, communication hole; 3, first support rib; 31, drainage section; 4, heat dissipation air duct; 5, second support rib; 51, weight reduction groove; 52, reinforcing rib; 6, process hole. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 to the present utility model.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 5 Now, a heat dissipation duct structure for energy storage provided by the utility model is described. The heat dissipation duct structure for energy storage includes a partition 2, which is arranged between two adjacent battery cells 1. First support ribs 3 are abutted between the partition 2 and the battery cells 1 on both sides. The first support ribs 3 are arranged horizontally and in multiple numbers. Multiple first support ribs 3 are arranged at intervals from top to bottom, and a heat dissipation duct 4 is formed between two adjacent first support ribs 3 on the same side.

[0030] The utility model provides a heat dissipation duct structure for energy storage. Compared with the prior art, a partition 2 is arranged between two battery cells 1, and a plurality of first support ribs 3 are abutted between the partition 2 and the battery cell 1, and the plurality of first support ribs 3 are arranged at intervals so that a heat dissipation duct 4 is formed between two adjacent first support ribs 3. Natural wind exchanges heat with the battery cell 1 through the heat dissipation duct 4, so that the battery cell 1 is cooled. The partition 2 and the first support rib 3 are abutted between two adjacent battery cells 1 to form a support between the two battery cells 1, which can prevent the battery cell 1 from swelling. Therefore, the problem of narrowing of the heat dissipation duct 4 due to swelling and deformation of the battery cell 1 is avoided, so that the heat dissipation duct 4 can be permanently unobstructed, so that the heat dissipation effect of the battery cell 1 is maintained in a better state.

[0031] In this embodiment, the length and width of the partition 2 are comparable to the length and width of the battery cell 1. The width direction of the partition 2 is the horizontal direction. The first support rib 3 is fixedly connected to the partition 2. In this embodiment, the first support rib 3 and the partition 2 are both plastic products. The raw materials used for preparation are a mixture of PC and ABS with certain flame retardancy. The first support rib 3 and the partition 2 are integrally formed by injection molding. The partition 2 and the first support rib 3 are made of plastic products. On the one hand, the weight of the entire battery system is greatly reduced. On the other hand, the plastic products are insulating and can form a stable insulating layer between adjacent battery cells 1, which is convenient for assembly. In addition, the price of plastic products is relatively cheap, which invisibly reduces the production cost of the battery system.

[0032] In this embodiment, the height of the first support rib 3 is between 4 and 5 mm. Herein, the height of the first support rib 3 refers to the distance between the end face of the first support rib 3 contacting the battery cell 1 and the separator 2. The spacing between two adjacent first support ribs 3 is not less than 10 mm. In this way, a relatively large convection space can be formed in the heat dissipation air duct 4 between the two first support ribs 3, and the heat dissipation effect is good.

[0033] In this embodiment, the multiple first support ribs 3 located on both sides of the separator 2 are symmetrically arranged in a layout structure. With such an arrangement, the extrusion forces of the battery cells 1 on both sides on the left and right first support ribs 3 at the same height position cancel each other out, thereby preventing the first support rib 3 from applying a force to the separator 2 and effectively avoiding the problem of the separator 2 being deformed due to force.

[0034] In this embodiment, please refer to Figures 2 to 5 , second support ribs 5 are connected to both the top and bottom of the first separator 2. The second support ribs 5 extend along the width of the separator 2 so that the length of the second support ribs 5 is equivalent to the width of the separator 2. In this embodiment, the width of the second support ribs 5 is not less than 4 mm. An adhesive layer is provided on the end face of the second support rib 5 facing the battery cell 1. During use, the second support rib 5 abuts between two adjacent battery cells 1, and the second support rib 5 is adhered and fixed to the battery cell 1 through the provided adhesive layer. In practical applications, the adhesive layer can be obtained by pasting double-sided tape on the second support rib 5. In this embodiment, the widened design of the second support rib 5 increases its contact area with the battery cell 1, thereby also increasing the area of the adhesive layer and making the bonding strength between the second support rib 5 and the battery cell 1 good.

[0035] In this embodiment, in order to reduce the weight, a weight reduction groove 51 is provided on the end face of the second support rib 5 away from the separator 2. The weight reduction groove 51 is a through groove arranged along the length direction of the second support rib 5. In order to make the second support rib 5 have a certain structural strength while reducing the weight, reinforcing ribs 52 are also provided in the weight reduction groove 51. The reinforcing ribs 52 are connected between the two side walls of the weight reduction groove 51 and can also be connected to the bottom surface of the weight reduction groove 51 at the same time. The number of the reinforcing ribs 52 is multiple, and the multiple reinforcing ribs 52 are arranged at intervals along the length direction of the weight reduction groove 51. By providing the reinforcing ribs 52, effective support is formed for the two side walls of the weight reduction groove 51, so that the second support rib 5 can still maintain structural stability after weight reduction.

[0036] In this embodiment, a process hole 6 is provided in the middle of the partition 2. The process hole 6 is located between two adjacent first support ribs 3. The process hole 6 is a through hole penetrating the partition 2. The position of the process hole 6 is the injection molding gate when making the partition 2. After the injection molding process is completed, the injection molding gate is a solid boss provided between the two first support ribs 3. In order to avoid the injection molding gate from obstructing the formed heat dissipation duct 4, therefore, in subsequent processing, a hole is drilled at the injection molding gate, the injection molding gate is removed, and the process hole 6 is formed on the partition 2.

[0037] In some other embodiments, see Figure 6 , a perforation group is provided on the partition 2, and the perforation group is located between two adjacent first support ribs 3. The perforation group includes a plurality of connecting holes 21 penetrating the partition 2, and the plurality of connecting holes 21 are arranged along the width direction of the partition 2, and the connecting holes 21 in two adjacent perforation groups are staggered. Through the above arrangement, the left and right heat dissipation ducts 4 at the same height on the partition 2 are connected, so that natural wind can evenly dissipate heat to the battery cells 1 on both sides. In this embodiment, the staggered arrangement of the connecting holes 21 in two adjacent perforation groups can ensure the structural strength of the partition 2 and prevent it from being deformed due to concentrated force.

[0038] In this example, see Figure 6 A drainage section 31 is provided at both ends of the first supporting rib 3. The drainage section 31 is inclined from the inside to the outside toward the side wall of the heat dissipation duct 4 away from the heat dissipation duct 4. Through the above arrangement, a flared section is formed at the two ports of the heat dissipation duct 4, which increases the flow area at both ends of the heat dissipation duct 4 and facilitates guiding the natural side to enter the heat dissipation duct 4.

[0039] In this example, see Figure 6 , the width of the first support rib 3 gradually increases from both ends to the middle. In this embodiment, the width of the first support rib 3 refers to the width of the first support rib 3 along the length direction of the partition 2. The width of the first support rib 3 affects the flow area of ​​the heat dissipation duct 4 formed. In this embodiment, by setting the width of the first support rib 3 to gradually increase from both ends to the middle, the flow area of ​​the heat dissipation duct 4 formed between two adjacent first support ribs 3 gradually decreases from both ends to the middle. Even if the flow area of ​​the heat dissipation duct 4 presents a situation of large ends and small middle, the natural wind passing through the heat dissipation duct 4 has a Venturi effect, so that when the natural wind flows through the area with higher heat in the middle of the battery cell 1, the speed is higher and the temperature is relatively lower, which can take away more heat and improve the heat dissipation and cooling effect of the battery cell 1.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation air duct structure for energy storage, characterized in that, It includes a partition plate (2) which is arranged between two adjacent battery cells (1). A first support rib (3) is abutted between the partition plate (2) and the battery cells (1) on both sides. The first support rib (3) is horizontally arranged and the number thereof is multiple. The multiple first support ribs (3) are arranged at intervals from top to bottom. A heat dissipation air duct (4) is formed between two adjacent first support ribs (3) on the same side.

2. The heat dissipation air duct structure for energy storage according to claim 1, characterized in that, The first support ribs (3) on both sides of the partition plate (2) are symmetrically arranged and integrally formed with the partition plate (2).

3. The heat dissipation air duct structure for energy storage according to claim 1, characterized in that, Second support ribs (5) are connected to both the top and the bottom of the partition plate (2). The second support ribs (5) are abutted between two adjacent battery cells (1). An adhesive layer is provided on the end surface of the second support rib (5) facing the battery cell (1).

4. The heat dissipation air duct structure for energy storage according to claim 3, characterized in that, A weight reduction groove (51) is provided on the end surface of the second support rib (5) away from the partition plate (2).

5. The heat dissipation air duct structure for energy storage according to claim 4, characterized in that, A plurality of reinforcing ribs (52) are provided in the weight reduction groove (51). The reinforcing ribs (52) are connected between two side walls of the weight reduction groove (51). The plurality of reinforcing ribs (52) are arranged at intervals along the length direction of the weight reduction groove (51).

6. The heat dissipation air duct structure for energy storage according to claim 2, characterized in that, A perforation group is provided on the partition plate (2). The perforation group is located between two adjacent first support ribs (3). The perforation group includes a plurality of communication holes (21) penetrating through the partition plate (2). The plurality of communication holes (21) are arranged in the horizontal direction. The communication holes (21) in two adjacent perforation groups are staggeredly arranged.

7. The heat dissipation air duct structure for energy storage according to claim 1, characterized in that, Drainage sections (31) are provided at both ends of the first support rib (3). The side wall of the drainage section (31) facing the heat dissipation air duct (4) is inclined from the inside to the outside away from the heat dissipation air duct (4).

8. The heat dissipation air duct structure for energy storage according to claim 1, characterized in that, The width of the first support rib (3) gradually increases from both ends to the middle.

9. The heat dissipation air duct structure for energy storage according to claim 1, characterized in that, The height of the first support rib (3) is between 4 - 5 mm.

10. A heat dissipation air duct structure for energy storage as described in claim 1, characterized in that, Both the partition plate (2) and the first support rib (3) are plastic parts.

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