Battery box and battery cluster

Abstract

The utility model provides a battery box and a battery cluster. The battery box comprises a first box body; the battery module is positioned in the first box body and comprises a battery cell extending along a first direction; the second box body is connected with the first box body and comprises a first plate body and a side plate, the side plate is arranged on the first plate body in the first direction, and the first box body is fixedly connected with the side plate; and a fan; the fan is fixed on the first plate body and faces the battery module in the first direction. According to the battery box, the structure of an existing battery box is optimized, the battery box is divided into the first box body and the second box body, and the fan is fixed on the first plate body of the second box body, so that compared with an existing battery box in which the fan is fixed on a front panel of a plug-in box, the battery box structure provided by the utility model can accommodate more fans; and the heat dissipation capability of the battery box is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box and a battery cluster. Background Art

[0002] Currently, common air-cooled battery boxes usually set the cooling fan on the front panel of the battery box. However, since components such as plugs usually occupy the area of ​​the front panel of the battery box, the number of fans that can be accommodated in existing air-cooled battery boxes is relatively small, thereby limiting the heat dissipation capacity of the air-cooled battery box. Utility Model Content

[0003] The embodiments of the utility model provide a battery box and a battery cluster, which can solve the problem of insufficient heat dissipation capacity of the above-mentioned air-cooled battery box.

[0004] In a first aspect, an embodiment of the present utility model provides a battery, comprising:

[0005] The first box;

[0006] A battery module, located in the first box and comprising a battery cell extending along a first direction;

[0007] A second box body is connected to the first box body and includes a first plate body and a side plate, the side plate is arranged on the first plate body in a first direction, and the first box body is fixedly connected to the side plate; and

[0008] fan;

[0009] The fan is fixed on the first plate and faces the battery module in a first direction.

[0010] In one embodiment, the battery module includes a plurality of battery cells, the plurality of battery cells form at least two battery cell groups, the battery cell groups are arranged at intervals in a third direction, the battery cells in each battery cell group are arranged at intervals in a second direction, the second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction and intersects with the second direction;

[0011] The second box body also includes at least one partition plate, which is arranged on the first plate body to divide the second box body into at least two accommodating chambers, and the fans are respectively located in the at least two accommodating chambers.

[0012] In one embodiment, heat dissipation holes are provided on the side panels;

[0013] One end of the fan is connected to the side plate, and the fan comprises an air outlet, which is communicated with the heat dissipation hole.

[0014] In one embodiment, the fan is a centrifugal fan;

[0015] One end of the air outlet communicating with the heat dissipation hole is curved.

[0016] In one embodiment, an air inlet hole is opened on the first box body, and the battery module includes battery cells arranged in sequence;

[0017] The battery box also includes an air duct clamping plate, which is located between two adjacent battery cells, and the air inlet holes correspond one to one with one end of the air duct clamping plate.

[0018] In one embodiment, the battery box further comprises a battery cell supporting plate, the battery cell supporting plate comprises a vent, and the air duct clamp comprises a first end and a second end;

[0019] The first end and the second end are arranged in a first direction, the first end is opposite to the air inlet, and the second end is opposite to the vent.

[0020] In one embodiment, the fan is fixed to the side panel.

[0021] In a second aspect, an embodiment of the present invention provides a battery cluster, comprising the battery box of any one of the first aspect, wherein the positions of the air outlets of two adjacent battery boxes are staggered.

[0022] In one embodiment, the air outlet of one of the two adjacent battery boxes extends in a direction perpendicular to the side plate, and the air outlet of the other of the two adjacent battery boxes extends in a direction perpendicular to the side plate or inclined relative to the side plate;

[0023] The orthographic projection of the air outlet of one battery box on the second box body of another adjacent battery box falls outside the air outlet of the other adjacent battery box.

[0024] In one embodiment, the extension directions of the air outlets of two adjacent battery boxes are inclined relative to the side panels;

[0025] The orthographic projection of the air outlet of one battery box on the second box body of another adjacent battery box falls on or outside the air outlet of the other adjacent battery box.

[0026] In an embodiment of the utility model, by optimizing the structure of the existing battery box, the battery box is divided into a first box body and a second box body, the battery module is placed in the first box body, and the fan is fixed on the first plate body of the second box body. Compared with the existing battery box in which the fan is fixed on the front panel of the plug-in box, the front panel of the plug-in box usually includes components such as plugs, and thus occupies a certain space on the front panel of the plug-in box. The present application scheme avoids the problem of other components occupying space by fixing the fan in the second box body. Therefore, the battery box structure of the present application scheme can accommodate more fans, thereby enhancing the heat dissipation capacity of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a battery box provided by an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of a three-dimensional structure after the first box body and the second box body are connected according to an embodiment of the utility model;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of a battery module provided by an embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the air duct clamp provided by the embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the air duct clamp provided by the embodiment of the utility model being located in the battery module;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of a battery core supporting plate provided in an embodiment of the utility model;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the second box provided in an embodiment of the utility model;

[0035] Figure 8 It is a schematic diagram of the fan structure provided by an embodiment of the utility model;

[0036] Fig. 9 It is a schematic diagram of the three-dimensional structure in which the fan provided by the embodiment of the utility model is fixed to the side plate of the second box body.

[0037] Explanation of the reference numerals: 1000, battery box; 1010, first box body; 1011, air inlet; 1012, second plate body; 1013, first side plate; 1014, second side plate 1020, battery module; 1021, battery cell; 1022, battery cell group; 1023, battery module; 1030, second box body; 1031, first plate body; 1032, partition; 1033, side plate; 1034, heat dissipation hole; 1040, fan; 1041, air outlet; 1050, air duct clamp; 1051, air duct; 1052, first end; 1053, second end; 1060, battery cell supporting plate; 1061, air vent. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0039] The embodiment of the utility model provides a battery box, please refer to Figure 1 , Figure 2 and Figure 7 , Figure 1 A schematic diagram of the three-dimensional structure of a battery box provided in an embodiment of the utility model. Figure 2 A schematic diagram of a three-dimensional structure after the first box body and the second box body are connected according to an embodiment of the utility model. Figure 7 1 is a schematic diagram of the three-dimensional structure of the second box provided by an embodiment of the utility model. The battery box 1000 includes a first box 1010, a battery module 1020, a second box 1030 and a fan 1040. The second box 1030 includes a first plate 1031 and a side plate 1033, the side plate 1033 is arranged on the first plate 1031 in the first direction Z, the first box 1010 is fixedly connected to the side plate 1033 in the first direction Z, the battery module 1020 is arranged inside the first box 1010 and includes a battery cell 1021 extending along the first direction Z, and the fan 1040 is fixed on the first plate 1031 and faces the battery module 1020 in the first direction Z.

[0040] This embodiment optimizes the structure of the existing battery box, divides the battery box 1000 into a first box body 1010 and a second box body 1030, places the battery module 1020 in the first box body 1010, and fixes the fan 1040 on the first plate body 1031 of the second box body 1030. Compared with the existing battery box that fixes the fan on the front panel of the plug-in box, the front panel of the plug-in box usually includes components such as plugs, so it will occupy a certain space on the front panel of the plug-in box. The present application solution avoids the problem of other components occupying space by fixing the fan 1040 in the second box body 1030. Therefore, the battery box structure of the present application solution can accommodate more fans 1040, thereby enhancing the heat dissipation capacity of the battery box 1000. It should be noted that the above-mentioned fixing of the fan 1040 on the first plate body 1031 of the second box body 1030 can be set in different fixing methods according to specific usage or application scenarios, which is not limited here.

[0041] The first box body 1010 includes a second plate body 1012, a first side plate 1013 and a second side plate 1014, wherein the first side plate 1013 is connected to the second side plate 1014, the first side plate 1013 and the second side plate 1014 extend in the first direction Z and are connected to the second plate body 1012, respectively, the air inlet 1011 is provided on the second plate body 1012, and the size of the first side plate 1013 is smaller than that of the second side plate 1014. Generally, in the existing battery box structure, the first side plate 1013 is usually a plug box front panel, and usually there are components such as plugs on the plug box front panel.

[0042] In some embodiments, please refer to Figure 1 , Figures 3 to 5 An air inlet 1011 is provided on the top of the first box body 1010, the battery module 1020 includes battery cells 1021 arranged in sequence along a second direction X perpendicular to the first direction Z, the battery module 1020 includes a plurality of battery cells 1021, the plurality of battery cells form at least two battery cell groups, the battery cell groups are arranged at intervals in a third direction Y, the battery cells 1021 in each battery cell group are arranged at intervals in the second direction X, the second direction X is perpendicular to the first direction Z, and the third direction Y is perpendicular to the first direction Z and intersects with the second direction X.

[0043] In some embodiments, the battery box 1000 further includes an air duct clamping plate 1050, which is located between two adjacent battery cells 1021, and the air inlet holes 1011 correspond one to one with one end of the air duct clamping plate 1050. The air duct clamping plate 1050 is provided with a plurality of air ducts 1051.

[0044] In this embodiment, an air inlet hole 1011 is provided at the top of the first box body 1010, so that air can enter the battery box 1000 from the air inlet hole 1011 at the top of the first box body 1010; a gap is provided between adjacent battery cells 1021 constituting the battery module 1020, and an air duct clamp plate 1050 is provided in the gap between two adjacent battery cells 1021, thereby increasing the heat dissipation area of ​​the battery cell 1021 to ensure the heat dissipation effect of the battery box 1000; the air inlet hole 1011 is connected to the air duct 1051 of the air duct clamp plate 1050, so that after the air enters from the air inlet hole 1011 at the top of the first box body 1010, the heat emitted by the battery cell 1021 is taken out when passing through the air duct 1051 on the air duct clamp plate 1050, thereby achieving the heat dissipation function. It should be noted that the shape and size of the air inlet 1011 on the top of the first box body 1010 and the size of the gap between adjacent battery cells 1021 in the battery module 1020 can be set according to specific circumstances and are not limited here.

[0045] See also Figure 4 and Figure 6 In some embodiments, the battery box 1000 further includes a cell support plate 1060, the cell support plate 1060 includes a vent 1061, and the air duct clamp plate 1050 includes a first end 1052 and a second end 1053. The direction from the first end 1052 to the second end 1053 is the same as the first direction Z, the first end 1052 is opposite to the air inlet 1011, and the second end 1053 is opposite to the vent 1061. It should be noted that the air duct 1051 on the air duct clamp plate 1050 is opposite to the air inlet 1011 and the vent 1061, respectively.

[0046] The cell support plate 1060 is located between the battery module 1020 and the second box 1030, and is used to support the battery module 1020 to prevent the battery module 1020 from contacting the fan 1040 located in the second box 1030. The vent 1061 on the cell support plate 1060 is used to connect the first box 1010 with the second box 1030, so that the air in the first box 1010 can enter the second box 1030 through the vent 1061.

[0047] Specifically, when air enters from the air inlet 1011 of the second plate 1012 in the first box 1010, and then enters from the first end 1052 of the air duct clamp 1050, the heat released by the battery cell 1021 is taken out from the second end 1053 of the air duct clamp 1050 through the gap on the air duct clamp 1050, and finally is sucked into the battery box 1000 by the fan 1040 through the vent 1061 on the battery cell support plate 1060, thereby achieving the heat dissipation function. It should be noted that in this embodiment, the number of air duct clamps 1050 is consistent with the number of air inlet holes 1011 on the top of the first box 1010 and the number of vents 1061 on the battery cell support plate 1060, but it does not mean that this solution is limited. According to specific circumstances, the number of air inlet holes 1011 on the top of the first box 1010 and the number of vents 1061 on the battery cell support plate 1060 can be set and adjusted respectively, and no limitation is made here.

[0048] It should be noted that in this embodiment, the first end 1052 of the air duct clamp 1050 is not connected to the air inlet hole 1011 on the top of the first box body 1010, and the second end 1053 of the air duct clamp 1050 is not connected to the vent 1061 on the battery cell supporting plate 1060. However, according to specific circumstances, the air duct 1051 of the air duct clamp 1050 can be connected to the air inlet hole 1011 on the top of the first box body 1010, and the air duct 1051 of the air duct clamp 1050 can be connected to the vent 1061 on the battery cell supporting plate 1060, which is not limited here.

[0049] See also Figure 7 In some embodiments, the second box body 1030 further includes at least one partition 1032, and the partition 1032 is disposed on the first plate body 1031 of the second box body 1030, the partition 1032 divides the second box body 1030 into at least two accommodating chambers, the fans 1040 are respectively located in at least two of the accommodating chambers, and the partition 1032 is used to support the battery cell supporting plate 1060.

[0050] In some embodiments, a heat dissipation hole 1034 is formed on the side plate 1033 of the second box body 1030 . One end of a fan 1040 is connected to the side plate 1033 , and the fan 1040 includes an air outlet 1041 , which is connected to the heat dissipation hole 1034 .

[0051] In this embodiment, heat dissipation holes 1034 are arranged on the side plate 1033 of the second box body 1030, and the air outlet 1041 of the fan 1040 is connected with the heat dissipation holes 1034. Air is sucked in from the air inlet 1011 on the first box body 1010, passes through the air duct 1051 on the air duct clamping plate 1050, and then passes through the vent 1061 on the battery cell supporting plate 1060 to reach the fan 1040, and finally the air is discharged from the battery box 1000 by the fan 1040 from the connection between the air outlet 1041 and the heat dissipation holes 1034, thereby achieving a heat dissipation effect.

[0052] It should be noted that the heights of the partitions 1032 and the side panels 1033 of the second box 1030 are greater than the height of the fan 1040, and the partitions 1032 and the side panels 1033 are respectively connected to the battery cell support plate 1060 for supporting the battery cell support plate 1060. The fan 1040 includes an air outlet 1041, one end of which is connected to the side panel 1033, and the air outlet 1041 of the fan 1040 is connected to the heat dissipation holes 1034 on the side panel 1033. When air is sucked into the fan 1040, the air will be dispersed from the connection between the air outlet 1041 of the fan 1040 and the heat dissipation holes 1034 of the side panel 1033 to achieve a heat dissipation effect.

[0053] See also Figure 8 In some embodiments, the fan 1040 is a centrifugal fan 1040. One end of the fan 1040 connected to the heat dissipation hole 1034 is curved. Specifically, the air passing through the top of the centrifugal fan 1040 is sucked into the impeller of the centrifugal fan 1040 through the centrifugal fan 1040. When the impeller rotates at a high speed, the blades of the impeller (the blades are not shown in the figure) drive the air to rotate, forming a high-speed rotating airflow. The airflow is quickly thrown away from the center under the action of centrifugal force, forming an outwardly diffused airflow, and finally discharged through the air outlet 1041 of the centrifugal fan 1040 to achieve a heat dissipation effect. Compared with the ordinary fan 1040, the centrifugal fan 1040 attempts a higher airflow pressure through the rotation of the impeller, and can generate a larger airflow pressure, thereby generating a larger air volume than the ordinary fan 1040, so that its heat dissipation capacity is stronger than the ordinary fan 1040.

[0054] In some embodiments, the extension direction of one end of the air outlet 1041 of the fan 1040 is perpendicular to the side plate 1033 or inclined relative to the side plate 1033. Specifically, when the extension direction of one end of the air outlet 1041 of the fan 1040 is perpendicular to the side plate 1033,

[0055] In some embodiments, the fan 1040 is fixed on the side plate 1033 of the second box body 1030. Fig. 9 , Fig. 9The fan 1040 provided in the embodiment of the present invention is fixed to the side plate 1033 of the second box body 1030 in a three-dimensional structural diagram. Among them, one end of the fan 1040 including the air outlet 1041 is connected to the heat dissipation hole 1034 of the second box body 1030.

[0056] An embodiment of the utility model provides a battery box, which optimizes the structure of an existing battery box, divides the battery box 1000 into a first box body 1010 and a second box body 1030, places a battery module 1020 in the first box body 1010, and fixes a fan 1040 on a first plate 1031 of the second box body 1030. Compared with the existing battery box in which the fan is fixed on a front panel of the plug-in box, the front panel of the plug-in box usually includes components such as plugs, and thus occupies a certain space on the front panel of the plug-in box, the present application scheme avoids the problem of other components occupying space by fixing the fan 1040 in the second box body 1030. Therefore, the battery box structure of the present application scheme can accommodate more fans 1040, thereby enhancing the heat dissipation capacity of the battery box 1000.

[0057] An embodiment of the present invention further provides a battery cluster, which includes a plurality of the above-mentioned battery boxes, wherein the air outlets 1041 of two adjacent battery boxes 1000 are staggered in position.

[0058] Further, in some embodiments, the extension direction of the air outlet 1041 of one of the two adjacent battery boxes 1000 is perpendicular to the side panel 1033, and the extension direction of the air outlet 1041 of the other of the two adjacent battery boxes 1000 is perpendicular to the side panel 1033 or inclined relative to the side panel 1033; the orthographic projection of the air outlet 1041 of one battery box 1000 on the second box body 1030 of the other adjacent battery box 1000 falls outside the air outlet 1041 of the other adjacent battery box 1000.

[0059] Specifically, when the extension direction of the air outlet 1041 of one of the two adjacent battery boxes 1000 is perpendicular to its side plate 1033, the extension direction of the air outlet 1041 of the other adjacent battery box 1000 is perpendicular or inclined to its own side plate 1033. The orthographic projection of the air outlet 1041 of one of the battery boxes 1000 on the second box body 1030 of the other adjacent battery box 1000 falls outside the air outlet 1041 of the other adjacent battery box 1000. By placing the orthographic projection of the air outlet 1041 of one battery box 1000 on the second box body 1030 of the other adjacent battery box 1000 outside the air outlet 1041 of the battery box 1000, the airflow discharged from the two adjacent battery boxes 1000 through the air outlet 1041 will not be counter-charged, thereby ensuring the heat dissipation effect of the battery box 1000.

[0060] In some embodiments, the extension direction of the air outlet 1041 of two adjacent battery boxes 1000 is inclined relative to the side panel 1033; the orthographic projection of the air outlet 1041 of one battery box 1000 on the second box body 1030 of another adjacent battery box 1000 falls on or outside the air outlet 1041 of the other adjacent battery box 1000.

[0061] Specifically, when the extension direction of the air outlet 1041 of two adjacent battery boxes 1000 is inclined relative to their own side panels 1033, and the orthographic projection of the air outlet 1041 of one battery box 1000 on the second box body 1030 of another adjacent battery box 1000 falls on or outside the air outlet 1041 of the other battery box 1000, the air discharged from the two adjacent battery boxes 1000 through the air outlet 1041 will not produce a hedging phenomenon, thereby ensuring the heat dissipation effect of the battery box 1000.

[0062] It should be noted that there is a certain distance between the two adjacent battery boxes. The specific distance can be set according to the specific situation and is not limited here.

[0063] The battery cluster provided by the embodiment of the present utility model has all the advantages of the above-mentioned battery box, which will not be described in detail here.

[0064] The battery box and battery cluster provided by the utility model, firstly, by dividing the battery box into a first box body and a second box body, and placing the fan in the second box body, the problem of other components occupying space is avoided, so that the structure can accommodate more fans, thereby enhancing the heat dissipation capacity of the battery box. Secondly, by arranging at least one partition on the second box body, the partition is used to support the battery cell support plate, so as to avoid direct contact between the battery module and the fan, and ensure the safety of the battery box. And by arranging heat dissipation holes on the side panels of the second box body, and the air outlet of the fan is connected with the heat dissipation holes, so that heat can be discharged from the battery box through the heat dissipation holes. And by arranging the fan as a centrifugal fan, and the end of the fan air outlet connected with the heat dissipation hole is curved, so that when multiple battery boxes are arranged in parallel, the hot air discharged therefrom will not be counter-attacked, and its heat dissipation capacity is ensured. And by setting an air inlet on the first box body and setting an air duct clamp between two adjacent battery cells, and the air inlet corresponds to one end of the air duct clamp, so that air can enter through the air inlet, enter through one end of the air duct clamp, and be discharged from the other end of the air duct clamp, thereby achieving a heat dissipation effect. By making the extension direction of the air outlet of one of the two adjacent battery boxes perpendicular to the side plate, the extension direction of the air outlet of the other of the two adjacent battery boxes perpendicular to the side plate or inclined relative to the side plate, and the positive projection of the air outlet of one battery box on the second box body of the other adjacent battery box falls outside the air outlet of the other adjacent battery box, and the extension direction of the air outlet of the two adjacent battery boxes is inclined relative to the side plate, and the positive projection of the air outlet of one battery box on the second box body of the other adjacent battery box falls on or outside the air outlet of the other adjacent battery box, so that the air discharged from the two adjacent battery boxes will not be hedged, thereby ensuring its heat dissipation capacity.

[0065] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery box, characterized in that: include: The first box; A battery module, located in the first box and comprising a battery cell extending along a first direction; A second box body, connected to the first box body and comprising a first plate body and a side plate, the side plate being arranged on the first plate body in the first direction, and the first box body being fixedly connected to the side plate; and fan; Wherein, the fan is fixed on the first plate and faces the battery module in the first direction.

2. The battery box according to claim 1, characterized in that: The battery module includes a plurality of battery cells, the plurality of battery cells form at least two battery cell groups, the battery cell groups are arranged at intervals in a third direction, the battery cells in each battery cell group are arranged at intervals in a second direction, the second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction and intersects with the second direction; The second box body further includes at least one partition plate, and the partition plate is arranged on the first plate body to divide the second box body into at least two accommodating chambers, and the fans are respectively located in the at least two accommodating chambers.

3. The battery box according to claim 1, characterized in that: The side plate is provided with heat dissipation holes; One end of the fan is connected to the side plate, and the fan comprises an air outlet, which is communicated with the heat dissipation hole.

4. The battery box according to claim 3, characterized in that: The fan is a centrifugal fan; One end of the air outlet communicating with the heat dissipation hole is curved.

5. The battery box according to claim 2, characterized in that: The first box body is provided with an air inlet hole, and the battery module includes battery cells arranged in sequence; The battery box further comprises an air duct clamping plate, wherein the air duct clamping plate is located between two adjacent battery cells, and the air inlet holes correspond one to one with one end of the air duct clamping plate.

6. The battery box according to claim 5, characterized in that: The battery box further comprises a battery cell supporting plate, the battery cell supporting plate comprises a vent, and the air duct clamp comprises a first end and a second end; The first end and the second end are arranged in the first direction, the first end is opposite to the air inlet, and the second end is opposite to the vent.

7. The battery box according to claim 3, characterized in that: The fan is also fixed on the side plate.

8. A battery cluster, characterized in that: The battery cluster comprises a plurality of battery boxes according to any one of claims 1 to 7, wherein the air outlet positions of two adjacent battery boxes are staggered.

9. The battery cluster according to claim 8, characterized in that: The air outlet of one of the two adjacent battery boxes extends in a direction perpendicular to the side plate, and the air outlet of the other of the two adjacent battery boxes extends in a direction perpendicular to the side plate or inclined relative to the side plate; The orthographic projection of the air outlet of one of the battery boxes on the second box body of another adjacent battery box falls outside the air outlet of the other adjacent battery box.

10. The battery cluster according to claim 8, characterized in that: The extension directions of the air outlets of two adjacent battery boxes are inclined relative to the side plate; The orthographic projection of the air outlet of one of the battery boxes on the second box body of another adjacent battery box falls on or outside the air outlet of the other adjacent battery box.

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