Air-cooled battery plug-in box

Abstract

The utility model discloses an air-cooled battery subrack which comprises a battery cell group, a lower bottom plate, an upper cover plate and an air-cooled component, wherein the battery cell group is provided with an air duct; the lower bottom plate is arranged below the battery cell group; the upper cover plate is arranged above the battery cell group; the upper cover plate and the lower bottom plate abut against the battery cell group, and the air cooling assembly is communicated with the air duct. According to the utility model, the air cooling assembly is arranged in the middle of the battery cell group, so that the occupied space of the plug-in box is reduced, and the heat dissipation of the plug-in box is uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery equipment, and in particular relates to an air-cooled battery plug-in box. Background Art

[0002] Plug-in boxes are widely used in the field of electronic equipment structure. Their role is to use standardized plug-in boxes to realize the modularization of electronic equipment. They are widely used in the communication industry, ship electronic equipment, and large military aircraft electronic equipment, and have generated corresponding national standards and military standards.

[0003] The battery thermal management system is an important structure to ensure the safety and efficiency of power batteries. Existing battery thermal management methods include air cooling, water cooling, heat pipes, phase change materials, and hybrid cooling methods that combine these methods. Among them, water cooling has a better cooling effect on batteries than other cooling methods. However, water cooling equipment is large in size and will expand the space occupied by the plug-in box.

[0004] The invention patent with application number: CN202310115140.2 discloses an air-cooled battery plug-in box for energy storage, including a battery cell, the battery cell is connected to an upper plastic part, a lower plastic part and a foam, the upper plastic part is connected to an aluminum row device through a positioning column and a limit block, the aluminum row device includes an output aluminum row, a first series aluminum row, a second series aluminum row, a third series aluminum row and a fourth series aluminum row, the battery cell is connected to the aluminum row device, a box body is provided below the battery cell, an upper cover is provided on the top of the box body, an insulating member is provided below the upper cover, an air inlet is provided on the side panel of the box body, a first end plate 23, a second end plate 23, a top rib and a support member are provided above the box body, and a fan, a slave control, a connector and an output copper row are provided on the front panel of the box body. The invention adopts the above-mentioned air-cooled battery plug-in box for energy storage, adopts a module-free battery system, provides pre-tightening force for the battery cell, and improves heat dissipation efficiency and welding efficiency. However, in this solution, the fan is set at the front end of the plug box, so that the cooling wind speed is higher at the end closer to the fan, and the cooling wind speed is lower at the end farther away from the battery cell, resulting in a large temperature difference between the part close to the wind source and the part far away from the wind source, and uneven heat dissipation of the plug box. Utility Model Content

[0005] The utility model aims to provide an air-cooled battery plug-in box, in which an air-cooling component is arranged in the middle of a battery cell group, which not only reduces the occupied space of the plug-in box, but also makes the heat dissipation of the plug-in box uniform.

[0006] The utility model adopts a technical solution to solve its technical problem, which is to provide an air-cooled battery plug-in box, including a battery cell group with an air duct, a lower base plate arranged below the battery cell group, an upper cover plate arranged above the battery cell group, and an air-cooling component arranged in the middle of the battery cell group; the upper cover plate and the lower base plate are in contact with the battery cell group, and the air-cooling component is connected to the air duct.

[0007] In an embodiment of the present application, the battery cell group includes a first battery cell group and a second battery cell group arranged side by side on the lower base plate, and the air cooling component is disposed between the first battery cell group and the second battery cell group.

[0008] In an embodiment of the present application, the battery cell group further includes end plates arranged at both ends of the first battery cell group and the second battery cell group, and a copper bus; one end of the copper bus is connected to the first battery cell group, and the other end is connected to the second battery cell group.

[0009] In an embodiment of the present application, the first battery cell group includes a plurality of battery cells and a thermal insulation pad disposed between two adjacent battery cells; the thermal insulation pad is connected to the surface of the battery cell to form the air duct.

[0010] In an embodiment of the present application, the thermal insulation pad includes a vertical plate and a connecting block, a reinforcing block, and a supporting foot arranged on the vertical plate from top to bottom, and the connecting block, the reinforcing block, and the supporting foot are in contact with the battery cell.

[0011] In an embodiment of the present application, the air cooling component includes a fan and a harmonica tube arranged between the first battery cell group and the second battery cell group, a cavity is provided in the harmonica tube, the fan is connected to the cavity, and an air inlet is provided on the surface of the harmonica tube, and the air inlet is connected to the cavity.

[0012] In an embodiment of the present application, the fan is arranged in the middle part of the harmonica tube, and the air inlet holes include first air inlet holes arranged on both sides of the harmonica tube, and second air inlet holes arranged between the two first air inlet holes, and the aperture of the first air inlet hole is larger than the aperture of the second air inlet hole.

[0013] In the embodiment of the present application, a baffle is provided on one side of the lower base plate, and an extension direction of the baffle is perpendicular to an extension direction of the battery cell group.

[0014] In the embodiment of the present application, heat dissipation holes are provided on the upper cover plate.

[0015] In the embodiment of the present application, the upper cover plate is made of polycarbonate.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model proposes an air-cooled battery plug-in box, which cools down the plug-in box by setting an air-cooling component. Compared with water cooling, air cooling does not require water circulation equipment, and the volume of the air-cooling component is smaller, thereby reducing the occupied space of the plug-in box. The air-cooling component is set in the middle of the battery cell group, shortening the cooling path (the cooling path is the air duct between the battery cell group farthest from the air-cooling component and the air-cooling component), shortening the distance that the cold air moves in the air duct, increasing the wind speed in the air duct, reducing the temperature difference between the part close to the wind source and the part far away from the wind source, thereby making the heat dissipation of the plug-in box uniform;

[0018] 2. In the air-cooled battery plug-in box proposed by the utility model, the air-cooling component is arranged between the first battery cell group and the second battery cell group, and the air-cooling component dissipates heat for the battery cell groups on both sides, and the heat dissipation efficiency of the air-cooling component is improved;

[0019] 3. The utility model proposes an air-cooled battery plug-in box, in which a fan is arranged in the middle of a harmonica tube, first air inlet holes are arranged on both sides of the harmonica tube, a second air inlet hole is arranged between the two first air inlet holes, and the aperture of the first air inlet hole is larger than the aperture of the second air inlet hole, thereby increasing the air intake volume in the air duct at the end of the battery cell group, thereby offsetting the heat dissipation effect lost due to the reduction of wind speed, so that the heat dissipation efficiency in the middle and end of the battery cell group is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the utility model and are used together with the description to explain the principles of the utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the utility model, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is an exploded schematic diagram of an air-cooled battery plug-in box according to an embodiment of the utility model;

[0022] Figure 2 It is an exploded schematic diagram of a battery cell group of an air-cooled battery plug box according to an embodiment of the utility model;

[0023] Figure 3 A side view of a heat insulation pad of an air-cooled battery plug-in box according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of an upper cover plate of an air-cooled battery plug-in box according to an embodiment of the utility model;

[0025] Figure 5 This is an exploded schematic diagram of an air-cooling assembly of an air-cooled battery plug-in box according to an embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of a harmonica pipe of an air-cooled battery plug-in box according to an embodiment of the utility model.

[0027] In the figure: 1. air duct; 2. battery cell group; 21. first battery cell group; 211. thermal insulation pad; 2111. vertical plate; 2112. connecting block; 2113. reinforcing block; 2114. supporting foot; 212. battery cell; 22. second battery cell group; 23. end plate; 24. copper bus; 25. side partition; 3. lower base plate; 4. upper cover plate; 41. heat dissipation hole; 5. air cooling component; 51. fan; 52. harmonica pipe; 53. cavity; 54. air inlet; 541. first air inlet; 542. second air inlet; 6. baffle. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the utility model and the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the design orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0029] The utility model embodiment provides an air-cooled battery plug-in box, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , mainly includes an air duct 1, a battery cell group 2, a lower base plate 3, an upper cover plate 4, and an air cooling component 5.

[0030] In an embodiment of the present application, the battery plug box includes a cell group 2, an air duct 1 is arranged on the cell group 2, a lower base plate 3 is arranged below the cell group 2, an upper cover plate 4 is arranged above the cell group 2, and an air cooling component 5 is arranged in the middle of the cell group 2, the upper cover plate 4 and the lower base plate 3 are abutted against the cell group 2, the air cooling component 5 is connected with the air duct 1, and the air cooling component 5 can generate cold air so that the cold air passes through the air duct 1 to cool the cell group 2, thereby reducing the temperature of the entire plug box. In the present application, the plug box is cooled by setting an air cooling component 5. Compared with water cooling, air cooling does not require water circulation equipment. The air cooling component 5 is smaller in size, thereby reducing the space occupied by the plug box. The air cooling component 5 is set in the middle of the battery cell group 2, shortening the cooling path (the cooling path is the air duct 1 between the battery cell group 2 farther away from the air cooling component 5 and the air cooling component 5). The distance that the cold air moves in the air duct 1 is shortened, and the wind speed in the air duct 1 is increased, thereby reducing the temperature difference between the part close to the wind source and the part far away from the wind source, thereby making the heat dissipation of the plug box uniform.

[0031] In one embodiment, the battery cell group 2 includes a first battery cell group 21 and a second battery cell group 22 arranged side by side on the lower base plate 3, and the air cooling component 5 is arranged between the first battery cell group 21 and the second battery cell group 22. One end of the air cooling component 5 is connected to the air duct 1 on the first battery cell group 21, and the other end is connected to the air duct 1 on the second battery cell group 22. The air cooling component 5 dissipates heat from the battery cell groups 2 on both sides, and the heat dissipation efficiency of the air cooling component 5 is improved.

[0032] It should be noted that the battery cell group 2 also includes end plates 23 arranged at both ends of the first battery cell group 21 and the second battery cell group 22, and a copper bus 24, one end of the copper bus 24 is fixedly connected to the first battery cell group 21, and the other end is fixedly connected to the second battery cell group 22. A side partition 25 is also arranged between the end plate 23 and the battery cell group 2, one side of the side partition 25 abuts against the end plate 23, and the other side abuts against the battery cell group 2.

[0033] Furthermore, the first battery cell group 21 has the same structure as the second battery cell group 22. The first battery cell group 21 includes a plurality of battery cells 212, and a heat insulation pad 211 disposed between two adjacent battery cells 212. The heat insulation pad 211 is connected to the surface of the battery cell 212 to form an air duct 1. When the cold air passes through the air duct 1, it exchanges heat with the battery cell 212, thereby reducing the temperature of the battery cell 212. A heat insulation pad 211 is disposed between the battery cells 212 arranged side by side to separate the adjacent battery cells 212. There is a gap between the adjacent battery cells 212. The air duct 1 is disposed in the gap between the adjacent battery cells 212, thereby increasing the contact area between the air duct 1 and the battery cell 212, and facilitating the air cooling component 5 to dissipate heat from the battery cell 212.

[0034] Specifically, the thermal insulation pad 211 includes a vertical plate 2111 and a connection block 2112, a reinforcement block 2113 and a support leg 2114 arranged on the vertical plate 2111 from top to bottom. The connection block 2112, the reinforcement block 2113 and the support leg 2114 are connected to the vertical plate 2111 in an integrated manner, and the connection block 2112 and the reinforcement block 2113 abut against the battery cells 212 on both sides, and a part of the support leg 2114 abuts against the bottom surface of the battery cell 212, and another part abuts against the side surface of the battery cell 212. The connection strength between the thermal insulation pad 211 and the battery cell 212 is ensured by the connection block 2112, the reinforcement block 2113 and another part of the support leg 2114 abutting against the side surface of the battery cell 212. At the same time, a part of the support leg 2114 abuts against the bottom surface of the battery cell 212, and there is a certain gap between the bottom surface of the battery cell 212 and the lower bottom plate 3, which avoids the heat accumulation of the battery cell 212 and facilitates the heat dissipation of the battery cell 212.

[0035] In one embodiment, the air cooling component 5 includes a fan 51 and a harmonica tube 52, and the fan 51 and the harmonica tube 52 are both arranged between the first battery cell group 21 and the second battery cell group 22. A cavity 53 is arranged in the harmonica tube 52, and the fan 51 is connected to the cavity 53. An air inlet hole 54 is arranged on the surface of the harmonica tube 52, and the air inlet hole 54 is connected to the cavity 53. The fan 51 can blow or suck air toward the harmonica tube 52. When the fan 51 sucks air toward the harmonica tube 52, the heat generated by the battery cell 212 will increase the temperature of the gas in the air duct 1. The fan 51 sucks air, which reduces the air pressure in the cavity 53. After the gas in the air duct 1 enters the cavity 53 from the air inlet hole 54, it is drawn out of the cavity 53 by the fan 51. When the gas in the air duct 1 enters the cavity 53, it will bring the external cold air into the air duct 1, so that the temperature in the air duct 1 is lower than the temperature of the battery cell 212, thereby dissipating the heat of the battery cell 212; when the fan 51 blows air toward the harmonica tube 52, the fan 51 will transport the external cold air into the cavity 53, the air pressure in the cavity 53 increases, and the cold air in the cavity 53 will be discharged from the air inlet hole 54. The cold air leaves the cavity 53 from the air inlet hole 54 and enters the air duct 1, and contacts the surface of the battery cell 212, thereby dissipating the heat of the battery cell 212.

[0036] Furthermore, in order to prevent air leakage, the side surface of the harmonica tube 52 abuts against the side surface of the battery cell group 2 .

[0037] Furthermore, the fan 51 is arranged in the middle of the harmonica tube 52, which shortens the cooling path and shortens the distance that the cold air moves in the air duct 1, thereby ensuring the wind speed of the cold air in the air duct 1, and further improving the heat dissipation efficiency of the plug box. The air inlet 54 includes a first air inlet 541 arranged on both sides of the harmonica tube 52 and a second air inlet 542 arranged between the two first air inlet 541. The aperture of the first air inlet 541 is larger than the aperture of the second air inlet 542. As can be seen from the above, the air inlet 54 far away from the fan 51 will have a lower wind speed when the cold air reaches the air duct 1 because the cold air moves a longer distance. In order to make the heat dissipation efficiency of the middle and end of the battery cell group 2 the same, the aperture of the first air inlet 541 is set to be larger than the aperture of the second air inlet 542, so that the air intake volume in the air duct 1 at the end of the battery cell group 2 is increased, thereby offsetting the heat dissipation effect lost due to the reduced wind speed.

[0038] It should be noted that the air inlet hole 54 can be a round hole, a square hole or other shapes. In order to make the air inlet hole 54 match the air duct 1, preferably, the air inlet hole 54 is a square hole, and the width of the first air inlet hole 541 is 2.5 times that of the second air inlet hole 542.

[0039] In one embodiment, a baffle 6 is provided on one side of the lower base plate 3, and the extension direction of the baffle 6 is perpendicular to the extension direction of the battery cell group 2. An installation space is formed between the baffle 6 and the battery cell group 2, and the installation space is used for stacking discharge devices, high-voltage connectors, low-voltage connectors, etc.

[0040] In one embodiment, the upper cover plate 4 is provided with heat dissipation holes 41, and the battery cell group 2 exchanges heat with the outside through the heat dissipation holes 41, so as to further reduce the temperature of the battery cell group 2. Specifically, the upper cover plate 4 is made of polycarbonate, which has insulation and heat resistance, and has both toughness and rigidity, so the upper cover plate 4 can better protect the components below.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0042] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation methods, and the specific embodiments of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An air-cooled battery plug-in box, characterized in that: It comprises a cell group (2) on which an air duct (1) is provided, a lower base plate (3) arranged below the cell group (2), an upper cover plate (4) arranged above the cell group (2), and an air cooling component (5) arranged in the middle of the cell group (2); the upper cover plate (4) and the lower base plate (3) are in contact with the cell group (2), and the air cooling component (5) is in communication with the air duct (1).

2. The air-cooled battery plug-in box according to claim 1, characterized in that: The battery cell group (2) comprises a first battery cell group (21) and a second battery cell group (22) which are arranged side by side on the lower base plate (3), and the air cooling component (5) is arranged between the first battery cell group (21) and the second battery cell group (22).

3. The air-cooled battery plug-in box according to claim 2, characterized in that: The battery cell group (2) further comprises end plates (23) arranged at both ends of the first battery cell group (21) and the second battery cell group (22), and a copper busbar (24); one end of the copper busbar (24) is connected to the first battery cell group (21), and the other end is connected to the second battery cell group (22).

4. The air-cooled battery plug-in box according to claim 2, characterized in that: The first battery cell group (21) comprises a plurality of battery cells (212) and a heat insulating pad (211) provided between two adjacent battery cells (212); the heat insulating pad (211) is connected to the surface of the battery cell (212) to form the air duct (1).

5. The air-cooled battery plug-in box according to claim 4, characterized in that: The thermal insulation pad (211) comprises a vertical plate (2111) and a connection block (2112), a reinforcement block (2113), and a support foot (2114) which are arranged on the vertical plate (2111) in sequence from top to bottom, and the connection block (2112), the reinforcement block (2113), and the support foot (2114) are in abutment with the battery cell (212).

6. The air-cooled battery plug-in box according to claim 2, characterized in that: The air cooling component (5) comprises a fan (51) and a harmonica tube (52) arranged between the first battery cell group (21) and the second battery cell group (22); a cavity (53) is provided in the harmonica tube (52); the fan (51) is in communication with the cavity (53); an air inlet hole (54) is provided on the surface of the harmonica tube (52); the air inlet hole (54) is in communication with the cavity (53).

7. The air-cooled battery plug-in box according to claim 6, characterized in that: The fan (51) is arranged in the middle of the harmonica tube (52), and the air inlet holes (54) include first air inlet holes (541) arranged on both sides of the harmonica tube (52), and second air inlet holes (542) arranged between the two first air inlet holes (541), and the aperture of the first air inlet holes (541) is larger than the aperture of the second air inlet holes (542).

8. The air-cooled battery plug-in box according to claim 1, characterized in that: A baffle (6) is provided on one side of the lower base plate (3), and the extending direction of the baffle (6) is perpendicular to the extending direction of the battery cell group (2).

9. The air-cooled battery plug-in box according to claim 1, characterized in that: The upper cover plate (4) is provided with heat dissipation holes (41).

10. The air-cooled battery plug-in box according to claim 9, characterized in that: The upper cover plate (4) is made of polycarbonate.

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