Air duct structure of energy-storage air-cooling battery pack

Abstract

The utility model discloses an energy-storage air-cooling battery pack air duct structure, which comprises a box body, a plurality of air inlet holes, a plurality of air outlet holes, a plurality of air inlet holes and a plurality of air outlet holes, the plurality of battery cell modules are mounted in the box body, and an air duct is formed between every two adjacent battery cell modules; and the air duct plate is mounted between the air inlet hole and the plurality of battery cell modules, a plurality of shunting holes are formed in the air duct plate, and the shunting holes and the air outlet holes are symmetrically distributed at two ends of the air duct. The air-cooled battery pack solves the problems that an existing air-cooled battery pack is low in cooling efficiency and uneven in heat dissipation.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to an air-cooled battery pack air duct structure for energy storage. Background Art

[0002] An energy storage system cabinet generally refers to a device used to install and protect key components of an energy storage system. These cabinets are designed to install battery packs, controllers, power electronic devices, and related safety and monitoring systems. They play an important role in modern energy management, especially in renewable energy integration, grid stability enhancement, and emergency backup power supply.

[0003] With the rapid development of energy storage system cabinets, the heat dissipation requirements for battery packs inside the energy storage system cabinets are also getting higher and higher; compared with liquid-cooled battery packs, the existing air-cooled battery packs have the advantages of low cost, simpler structure, and no risk of liquid leakage. However, the disadvantages are also obvious. The cooling efficiency of the air-cooled battery pack is inferior to that of the liquid-cooled battery pack. At the same time, the existing air-cooled battery pack air duct structure is unreasonable, which will cause uneven heat dissipation of the battery cells. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an air-cooled battery pack air duct structure for energy storage, aiming to solve the problems of low cooling efficiency and uneven heat dissipation of the existing air-cooled battery packs.

[0005] To achieve the above purpose, the utility model provides an air-cooled battery pack air duct structure for energy storage, including:

[0006] A box body, which is provided with a plurality of air inlet holes and air outlet holes;

[0007] A plurality of battery cell modules, and a plurality of the battery cell modules are installed in the box body, and air ducts are formed between adjacent two of the battery cell modules;

[0008] An air duct plate, which is installed between the air inlet holes and the plurality of battery cell modules, and a plurality of diversion holes are opened on the air duct plate, and the diversion holes and the air outlet holes are symmetrically distributed at both ends of the air duct.

[0009] Optionally, air ducts are formed between the battery cell modules close to the side wall of the box body and the side wall of the box body.

[0010] Optionally, the diversion holes and the air outlet holes are both arranged in groups, and one group of diversion holes and one group of air outlet holes respectively correspond to both ends of any one of the air ducts.

[0011] Optionally, the number of each group of the diversion holes gradually decreases from the middle of the air duct plate to both ends.

[0012] Optionally, at both ends of any one of the air ducts, the number of the diversion holes is greater than the number of the air outlet holes.

[0013] Optionally, the groups of the diversion holes and the groups of the air outlet holes are both arranged in a matrix.

[0014] Optionally, the arrangement width of each group of the diversion holes gradually decreases from the middle of the air duct plate to both ends.

[0015] Optionally, at both ends of any of the air ducts, the arrangement width of the diversion holes is greater than that of the air outlet holes.

[0016] Optionally, both the diversion holes and the air outlet holes are set as waist-shaped holes.

[0017] Optionally, a wire trough is arranged at the edge of the air duct plate close to the top of the box body, and the box body is provided with an air outlet hole corresponding to the wire trough.

[0018] The beneficial effects of the present utility model are as follows: The air duct structure of the existing air-cooled battery pack is improved. An air duct plate is added between the box body and the battery module, and diversion holes corresponding to each air duct are opened on the air duct plate. The air entering from the air inlet hole of the box body will be diverted by the air duct plate, and thus evenly enter each air duct through the diversion holes to dissipate heat from the battery cell module, ensuring the uniformity of heat dissipation and improving the heat dissipation efficiency. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of the battery pack of the present utility model;

[0021] Figure 2 It is a layout diagram of the internal structure of the battery pack of the present utility model;

[0022] Figure 3 It is a schematic diagram of the box body structure of the present utility model;

[0023] Figure 4 It is a schematic diagram of the air duct plate structure of the present utility model;

[0024] Explanation of the Reference Numerals in the Drawings:

[0025] Box body 1; Air inlet hole 11; Air outlet hole 12;

[0026] Battery cell module 2;

[0027] Air duct 3;

[0028] Air duct plate 4; Diversion hole 41; Wire trough 42;

[0029] The realization, functional features, and advantages of the present utility model will be further described in conjunction with embodiments and with reference to the accompanying drawings. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0033] An embodiment of the present utility model provides an air-cooled battery pack air duct structure for energy storage, referring to Figure 1 and Figure 2 , including:

[0034] A box body 1, provided with a plurality of air inlet holes 11 and air outlet holes 12;

[0035] A plurality of battery cell modules 2, the plurality of battery cell modules 2 are installed in the box body 1, and air ducts 3 are formed between adjacent two of the battery cell modules 2;

[0036] The air duct plate 4 is installed between the air inlet hole 11 and several of the battery cell modules 2. A plurality of diversion holes 41 are formed in the air duct plate 4, and the diversion holes 41 and the air outlet hole 12 are symmetrically distributed at both ends of the air duct 3.

[0037] In this embodiment, the structure of the air duct 3 of the existing air-cooled battery pack is improved. Among them, the battery cell modules 2 are sequentially and spacedly installed in the box body 1, so as to form an air duct 3 between adjacent battery cell modules 2 for air flow, enabling the air flow to evenly flow through both sides of each battery cell module 2, achieving more uniform heat dissipation and improving the heat dissipation efficiency. At the same time, in this embodiment, an air duct plate 4 is further added in the box body 1 to separate the battery cell modules 2 from the air inlet hole 11. The air flow entering from the air inlet hole 11 will be blocked by the air duct plate 4, and then the entering air flow is diverted by the diversion holes 41 on the air duct plate 4 and then enters the area where the battery cell modules 2 are located for air-cooled heat dissipation, avoiding the situation that after the air flow enters the box body 1 from the air inlet hole 11, it concentrates in the area corresponding to the air inlet hole 11, resulting in uneven air flow distribution and affecting the heat dissipation of the battery cell modules 2. Further, the diversion holes 41 and the air outlet hole 12 are symmetrically distributed at both ends of the air duct 3 respectively. Thus, the air flow diverted by the diversion holes 41 is directly and evenly diverted into each air duct 3, further improving the uniformity of the air flow, enabling each battery cell module 2 to be diverted with cooling air flow, achieving uniform heat dissipation, and improving the overall heat dissipation efficiency of the battery pack.

[0038] Further, referring to Figure 2 , air ducts 3 are formed between the battery cell modules 2 close to the side wall of the box body 1 and the side wall of the box body 1. In this embodiment, the battery cell modules 2 are arranged in parallel along one direction. In addition to the air ducts 3 formed between the battery cell modules 2, in order to improve the efficient heat dissipation of the battery cell modules 2 at both ends, an air duct 3 is also formed between the side walls of the box body 1 of the battery cell modules 2 at both ends respectively. In this way, air ducts 3 are arranged on both sides of each battery cell module 2, enabling the heat dissipation of each battery cell module 2 to be balanced, improving the heat dissipation efficiency, and avoiding uneven heat dissipation. Similarly, for the air ducts 3 formed between the battery cell modules 2 and the side wall of the box body 1, diversion holes 41 and air outlet holes 12 are respectively arranged at both ends thereof to facilitate the air flow.

[0039] Further, referring to Figure 3 and Figure 4, the diversion holes 41 and the air outlet holes 12 are both arranged in groups, and one end of each air duct 3 corresponds to a group of diversion holes 41 and a group of air outlet holes 12 respectively. In this embodiment, the diversion holes 41 and the air outlet holes 12 are both arranged in groups. A group of diversion holes 41 includes a plurality of diversion holes 41, and a group of air outlet holes 12 includes a plurality of air outlet holes 12. In this way, the airflow entering each air duct 3 can be made more uniform. The arrangement structure of the diversion holes 41 and the air outlet holes 12 can be designed according to the size of the air duct 3 to ensure that the airflow can evenly cover the entire air duct 3. Specifically, in this embodiment, the cross-section of the air duct 3 is rectangular. Therefore, each group of the diversion holes 41 and each group of the air outlet holes 12 are both arranged in a matrix, so that the coverage areas of the diversion holes 41 and the air outlet holes 12 are close to the cross-section of the air duct 3, thereby enabling the airflow to better evenly cover the entire air duct 3 and improving the heat dissipation efficiency.

[0040] Furthermore, referring to Figure 4 , the number of each group of the diversion holes 41 gradually decreases from the middle of the air duct plate 4 to both ends. It should be noted that generally, due to the different structural designs and layouts of the air inlet holes 11 of the box body 1, after the cooling air flow enters the box body 1 from the air inlet holes 11 of the box body 1, its distribution is uneven. In this embodiment, there are two sets of air inlet holes 11, and there is a relatively large space between the two sets of air inlet holes 11 (i.e., the middle of the box body 1). Therefore, the airflow entering the middle of the box body 1 is less than that on both sides. In this embodiment, the number of the diversion holes 41 in the middle of the air duct plate 4 is greater than that on both sides, so as to evenly divide the airflow entering from the air inlet holes 11 to ensure the uniformity of the airflow entering each air duct 3. Specifically, in this embodiment, each group of the diversion holes 41 is arranged in a matrix, so the arrangement width of each group of the diversion holes 41 can gradually decrease from the middle of the air duct plate 4 to both ends. Referring to Figure 4 , in this embodiment, the middle group of the diversion holes 41 is provided with seven columns, the two groups of the diversion holes 41 adjacent to the middle group are provided with five columns, and the two outermost groups of the diversion holes 41 are provided with four columns. It should be noted that the specific number setting of the diversion holes 41 can be designed according to the actual structural dimensions of the box body 1 and the air duct 3, and there is no limitation here, as long as the airflow can be evenly divided.

[0041] Further, at both ends of any of the air ducts 3, the number of the shunt holes 41 is greater than the number of the air outlet holes 12. In this embodiment, the number of the shunt holes 41 being greater than the number of the air outlet holes 12 can slow down the airflow when it is discharged from the box body 1, thereby slowing down the time for the cooling airflow to be discharged from the box body 1, enabling the battery cell module 2 to be more fully air-cooled. At the same time, as the airflow flows from the shunt holes 41 to the air outlet holes 12, the airflow velocity will decrease, and reducing the number of the air outlet holes 12 is also beneficial to the stable outflow of the airflow. Specifically, in this embodiment, both the shunt holes 41 and the air outlet holes 12 are arranged in a matrix. Therefore, at both ends of any of the air ducts 3, the arrangement width of the shunt holes 41 is set to be greater than the arrangement width of the air outlet holes 12, forming a front-wide and rear-narrow arrangement in the gas flow direction of the air duct 3, which increases the uniformity of the air intake.

[0042] Further, both the shunt holes 41 and the air outlet holes 12 are set as kidney-shaped holes. It should be noted that the shapes of the air intake holes 11, the air outlet holes 12 and the shunt holes 41 can be adaptively designed according to the actual structure of the battery pack. In this embodiment, both the shunt holes 41 and the air outlet holes 12 are set as kidney-shaped holes. Compared with ordinary circular holes, the kidney-shaped holes can have a longer perimeter within the same area, thereby increasing the heat dissipation surface area, which can more effectively promote heat dissipation and improve the heat dissipation efficiency.

[0043] Further, a wire trough 42 is provided at the edge of the air duct plate 4 close to the top of the box body 1, and the box body 1 is provided with an air outlet hole 12 corresponding to the wire trough 42. In this embodiment, the wire trough 42 can be used for the copper bars, wire harnesses, etc. of the battery pack to pass through for wiring. Similarly, the cooling airflow can also enter the box body 1 through the wire trough 42. By providing an air outlet hole 12 corresponding to the wire trough 42 in the box body 1, another air duct 3 can be formed at the top of the battery cell module 2, enabling the cooling air to pass through the upper and two sides of the battery cells, increasing the heat dissipation area, and thus further improving the heat dissipation efficiency of the battery cell module 2.

[0044] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An air duct structure for an energy storage air-cooled battery pack, characterized in that: include: The box body is provided with a plurality of air inlet holes and air outlet holes; A plurality of battery modules, wherein the plurality of battery modules are installed in the box, and an air duct is formed between two adjacent battery modules; The air duct plate is installed between the air inlet and the plurality of battery modules. The air duct plate is provided with a plurality of diversion holes, and the diversion holes and the air outlet holes are symmetrically distributed at both ends of the air duct.

2. The air duct structure of the energy storage air-cooled battery pack according to claim 1 is characterized in that: An air duct is formed between the battery cell module close to the side wall of the box and the side wall of the box.

3. The air duct structure of the energy storage air-cooled battery pack according to claim 2 is characterized in that: The diverter holes and the air outlet holes are arranged in groups, and two ends of any air duct correspond to a group of diverter holes and a group of air outlet holes respectively.

4. The air duct structure of the energy storage air-cooled battery pack according to claim 3 is characterized in that: The number of the diversion holes in each group gradually decreases from the middle to the two ends of the air duct plate.

5. The air duct structure of the energy storage air-cooled battery pack according to claim 3 is characterized in that: At either end of the air duct, the number of the diversion holes is greater than the number of the air outlet holes.

6. The air duct structure of the energy storage air-cooled battery pack according to claim 3 is characterized in that: Each group of diversion holes and each group of air outlet holes are arranged in a matrix shape.

7. The air duct structure of the energy storage air-cooled battery pack according to claim 6 is characterized in that: The arrangement width of each group of diversion holes gradually decreases from the middle to the two ends of the air duct plate.

8. The air duct structure of the energy storage air-cooled battery pack according to claim 6 is characterized in that: At either end of the air duct, the arrangement width of the diversion holes is greater than the arrangement width of the air outlet holes.

9. The air duct structure of the energy storage air-cooled battery pack according to claim 1, characterized in that: The diversion holes and the air outlet holes are both configured as waist-shaped holes.

10. The air duct structure of the energy storage air-cooled battery pack according to claim 1, characterized in that: The edge of the air duct plate close to the top of the box body is provided with a wire passing groove, and the box body is provided with an air outlet corresponding to the wire passing groove.

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