Battery box and outdoor cabinet

Abstract

The utility model provides a battery box and an outdoor cabinet. The battery box comprises: a box body assembly, which comprises an upper box body and a lower box body connected with each other, and the upper box body and the lower box body jointly define a box body installation cavity; the battery module is positioned in the box body mounting cavity and comprises one or more battery cells; the heat dissipation assembly is located in the box body installation cavity and comprises one or more fans, and each fan is provided with a fan suction opening and a fan exhaust opening which are communicated with each other; wherein the upper box body is provided with one or more box body air inlet holes, and the lower box body is provided with one or more box body air outlet holes; the fan is located between the battery module and the lower box body to dissipate heat of the battery module, the fan suction opening is communicated with the box body air inlet, and the fan exhaust opening is communicated with the box body air outlet. According to the utility model, the fan is arranged below the battery module and does not occupy space by other elements, so that more fans can be accommodated, and the heat dissipation capability of the battery box is stronger.

Description

Technical Field

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

[0002] In the related art, an air-cooled battery box usually sets 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 air-cooled battery box can accommodate a small number of fans, which limits the heat dissipation capacity of the air-cooled battery box. Utility Model Content

[0003] The embodiments of the present utility model provide a battery box and an outdoor cabinet, which can solve the above-mentioned problems.

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

[0005] The box assembly comprises an upper box and a lower box connected to each other, wherein the upper box and the lower box together form a box installation cavity;

[0006] A battery module, located in the housing installation cavity, includes a plurality of battery cells; and

[0007] The heat dissipation assembly is located in the installation cavity of the box body and includes one or more fans, and the fans are provided with fan air inlet and fan air outlet that are interconnected;

[0008] Among them, the upper box body is provided with one or more box body air inlet holes, and the lower box body is provided with one or more box body air outlet holes; the fan is located between the battery module and the lower box body to dissipate heat for the battery module, and a gas flow channel is formed between the fan exhaust port and the box body air inlet hole, and the flow channel passes through the battery module.

[0009] In one embodiment, the heat dissipation assembly also includes a plurality of air duct clamps, the battery module includes a plurality of battery cells, an air duct clamp is sandwiched between two adjacent battery cells, the air duct clamp is thermally connected to the two battery cells, the air duct clamp is provided with a ventilation duct, one end of the ventilation duct is connected to the corresponding air inlet of the box, and the other end of the ventilation duct is connected to the air outlet of the box through a fan suction port and a fan exhaust port.

[0010] In one embodiment, the multiple box air inlets include two box air inlet hole groups, the multiple air duct plywood includes two air duct plywood groups, the multiple battery cells include two battery cell groups, the multiple fans include two fan groups, and the multiple box air outlet holes include two box air outlet hole groups, and the air duct plywood of each air duct plywood group is located between two adjacent battery cells of the corresponding battery cell group; wherein the box air inlet holes of each box air inlet hole group are connected to the box air outlet holes of the corresponding box air outlet hole group through the air duct plywood of the corresponding air duct plywood group and the fan of the corresponding fan group, and the two box air inlet hole groups, the two air duct plywood groups, and the two battery cell groups are all arranged side by side, the two fan groups are arranged back to back, and the two box air outlet hole groups are arranged opposite to each other.

[0011] In one embodiment, the heat dissipation assembly further includes a phase change sheet assembly, the phase change sheet assembly includes at least one phase change sheet, each phase change sheet is thermally connected to the bottom of the corresponding battery core and faces the fan exhaust port.

[0012] In one embodiment, the length of the phase change sheet is 1 mm-2 mm smaller than the length of the bottom of the battery cell in the length direction of the phase change sheet, and the width of the phase change sheet is 1 mm-2 mm smaller than the width of the bottom of the battery cell in the width direction of the phase change sheet; or,

[0013] The length of the phase change sheet is 5 mm smaller than the length of the bottom of the battery cell in the length direction of the phase change sheet, and the width of the phase change sheet is 5 mm smaller than the width of the bottom of the battery cell in the width direction of the phase change sheet.

[0014] In one embodiment, the thickness of the phase change film is less than 0.4 mm.

[0015] In one embodiment, the battery box also includes a battery cell support plate installed in the box installation cavity, the battery cell support plate is located between the battery cell and the fan to support the battery cell, and the battery cell support plate is provided with at least one through hole, each through hole corresponds to the ventilation duct of the corresponding air duct clamp.

[0016] In one embodiment, the battery cell supporting plate is further provided with at least one groove, and each groove accommodates a corresponding phase change sheet.

[0017] In one embodiment, the fan is installed on the lower box body, the fan suction port is arranged at the top of the fan and facing the bottom of the battery module, the fan exhaust port is arranged on the side of the fan, and the box body air outlet connected to the fan exhaust port is arranged on the side with the largest area in the lower box body.

[0018] In a second aspect, an embodiment of the present invention provides an outdoor cabinet, comprising at least two battery boxes as described in the first aspect, wherein the positions of the air outlet holes of two adjacent battery boxes are staggered.

[0019] The utility model provides a battery box and an outdoor cabinet, wherein a battery module is placed in a box installation cavity, and a fan is installed under the battery module, and the fan exhaust port of the fan is connected to the box air inlet, and the fan exhaust port is connected to the box air outlet. Compared with the battery box in the related art, the fan is fixed on the front panel of the plug-in box, and the front panel of the plug-in box usually includes components such as plugs, so it will occupy a certain space of the front panel of the plug-in box. The present application solution fixes the fan under the battery module, and the space under the battery module can be used to arrange the fan. Therefore, the battery box structure of the present application solution can accommodate more fans, thereby enhancing the heat dissipation capacity of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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.

[0021] Figure 1 It is a structural schematic diagram of a battery box provided by an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A cross-sectional view of

[0023] Figure 3 yes Figure 1 Exploded diagram of

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure of part A;

[0025] Figure 5 yes Figure 3 A schematic diagram of the structure of the battery module connected to the air duct clamp plate;

[0026] Figure 6 yes Figure 3 The structural diagram of the fan in FIG.

[0027] Figure 7 yes Figure 3 A schematic diagram of the structure of the air duct splint;

[0028] Figure 8 yes Figure 3 A schematic diagram of the structure of the phase change sheet assembly;

[0029] Fig. 9 yes Figure 3 A schematic diagram of the structure of the battery cell support plate;

[0030] Explanation of the accompanying drawings: 1000, battery box; 1100, box assembly; 1200, battery module; 1300, heat dissipation assembly; 1400, battery cell supporting plate; 1110, upper box; 1120, lower box; 1210, battery cell; 1310, fan; 1320, air duct clamp; 1330, phase change sheet assembly; 1410, perforation; 1111, box air inlet; 1121, box air outlet; 1311, fan exhaust port; 1312, fan exhaust port; 1321, ventilation duct; 1331, phase change sheet. DETAILED DESCRIPTION

[0031] 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.

[0032] The embodiment of the utility model provides a battery box 1000. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 , Figure 1 1 is a schematic diagram of the structure of a battery box 1000 provided in an embodiment of the utility model. Figure 3 yes Figure 1 Exploded diagram of Figure 5 yes Figure 3 A schematic diagram of the structure of the battery module 1200 connected to the air duct clamping plate 1320, Figure 6 yes Figure 3 Schematic diagram of the structure of the fan 1310.

[0033] The battery box 1000 includes a box assembly 1100, a battery module 1200, and a heat dissipation assembly 1300. The box assembly 1100 includes an upper box 1110 and a lower box 1120 connected to each other, and the upper box 1110 and the lower box 1120 together form a box installation cavity. The battery module 1200 is located in the box installation cavity and includes a plurality of battery cells 1210. The heat dissipation assembly 1300 is located in the box installation cavity and includes one or more fans 1310. The fan 1310 is provided with a fan suction port 1311 and a fan exhaust port 1312 that are connected to each other.

[0034] The upper box 1110 is provided with one or more box air inlets 1111, and the lower box 1120 is provided with one or more box air outlets 1121. The battery module 1200 is located between the box air inlet 1111 and the box air outlet 1121. The fan 1310 is located between the battery module 1200 and the lower box 1120 to dissipate heat for the battery module 1200, and a gas flow channel is formed between the fan exhaust port 1311 and the box air outlet 1121, and the flow channel passes through the battery module.

[0035] The fan air inlet 1311 is connected to the box air inlet 1111 , and the fan air outlet 1312 is connected to the box air outlet 1121 .

[0036] In this embodiment, due to the suction of the fan 1310, air can enter from the box air inlet 1111 of the upper box 1110, and carry the heat generated by the battery module 1200, and then pass through the fan air intake 1311 and the fan air outlet 1312, and finally be discharged from the box air outlet 1121 of the lower box 1120, thereby achieving the heat dissipation function. Compared with the related art, this embodiment installs the fan 1310 under the battery module 1200, so that the battery box 1000 can accommodate more fans 1310, and at the same time, an air flow path from top to bottom can be formed to increase the heat generated by the battery module 1200 carried by the air, form a good air duct structure, and then enhance the heat dissipation capacity of the battery box 1000.

[0037] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 , Figure 4 yes Figure 3 The fan 1310 is installed on the lower box body 1120, the fan air inlet 1311 is arranged on the top of the fan 1310 and directly facing the bottom of the battery module 1200, the fan air outlet 1312 is arranged on the side of the fan 1310, and the box air outlet 1121 connected to the fan air outlet 1312 is arranged on the side of the lower box body 1120 with the largest area.

[0038] In this embodiment, the fan 1310 is installed in the lower box 1120 where no other components are placed, so that a certain volume of the lower box 1120 can accommodate more fans 1310. At the same time, the fan air intake 1311 is arranged at the top of the fan 1310 and directly facing the bottom of the battery module 1200, so that the fan 1310 can absorb the heat generated by the battery module 1200 more quickly, and finally discharge the air from the box air outlet 1121 connected to the fan air outlet 1312, so as to realize the heat dissipation function of the battery box 1000.

[0039] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 7 , Figure 7 yes Figure 6 The heat dissipation assembly 1300 further includes a plurality of air duct clamps 1320. The battery module 1200 includes a plurality of battery cells 1210. An air duct clamp 1320 is sandwiched between two adjacent battery cells 1210, and the air duct clamp 1320 is thermally connected to the two battery cells 1210. The air duct clamp 1320 is provided with a ventilation duct 1321. One end of the ventilation duct 1321 is connected to the corresponding box air inlet 1111, and the other end of the ventilation duct 1321 is connected to the box air outlet through the fan suction port 1311 and the fan exhaust port 1312.

[0040] Specifically, each air duct clamp 1320 is provided with a ventilation duct 1321, and the ventilation duct 1321 is connected to the corresponding box air inlet 1111 of the upper box 1110 and the fan air outlet 1311 of the fan 1310. At the same time, the air duct clamp 1320 is located between two adjacent battery cells 1210 and is heat-conductively connected to the two battery cells 1210. By providing the air duct clamp 1320, air can enter from the box air inlet 1111 of the upper box 1110, pass through the ventilation duct 1321 of the air duct clamp 1320, and take out the heat absorbed by the air duct clamp 1320 and the battery cell 1210, and finally enter the fan 1310 through the fan air outlet 1311 and be discharged. The air duct clamping plate 1320 in this embodiment can absorb more heat by contacting the battery cells 1210 on both sides within a certain period of time, and finally bring the heat out through the air passing through the ventilation duct 1321, thereby enhancing the heat dissipation capacity of the battery box 1000.

[0041] In some embodiments, please refer to Figure 3 The plurality of box air inlet holes 1111 include two box air inlet hole groups, the plurality of air duct clamping plates 1320 include two air duct clamping plate groups, the plurality of battery cells 1210 include two battery cell groups, the plurality of fans 1310 include two fan groups, and the plurality of box air outlet holes 1121 include two box air outlet hole groups. The air duct clamping plates 1320 of each air duct clamping plate group are located between two adjacent battery cells 1210 of the corresponding battery cell group.

[0042] Among them, the box air inlet hole 1111 of each box air inlet hole group is connected to the box air outlet hole 1121 of the corresponding box air outlet hole group through the air duct plywood 1320 of the corresponding air duct plywood group and the fan exhaust port 1311 of the fan 1310 of the corresponding fan group, and the two box air inlet hole groups, the two air duct plywood groups, and the two battery cell groups are all arranged side by side, the two fan groups are arranged back to back, and the two box air outlet hole groups are arranged opposite to each other.

[0043] Specifically, the two box air inlet groups are arranged along the width direction of the upper box 1110 of the box assembly 1100. The two air duct plywood groups are respectively located in the box installation cavity and arranged along the width direction of the box installation cavity. The two fan groups are respectively located in the box installation cavity and arranged along the width direction of the lower box 1120 of the box assembly 1100. At the same time, the fans 1310 of the two fan groups are arranged back to back, so that the fan exhaust ports 1312 of the two fan groups and the air outlet directions of the two box air outlet groups are opposite, and finally the box air inlet holes 1111 of the two box air inlet groups are respectively connected to the corresponding air duct plywood 1320 of the air duct plywood group and the box air outlet holes 1121 of the box air outlet group, and the air is discharged from the lower box 1120 through the above path to achieve heat dissipation.

[0044] In some embodiments, please refer to Figure 3 and Figure 8 , Figure 8 yes Figure 3 The heat dissipation assembly 1300 further includes a phase change sheet assembly 1330 , which includes at least one phase change sheet 1331 , each phase change sheet 1331 being thermally connected to the bottom of the corresponding battery cell 1210 and facing the fan exhaust port 1311 .

[0045] The phase change sheet 1331 is a thermal management element made of phase change material, which has good thermal conductivity and can absorb the heat generated by the battery cell 1210 to reduce the temperature of the battery cell 1210. Compared with the related art in which the heat generated by the battery cell 1210 is absorbed by setting thermal conductive silicone, the phase change sheet 1331 in this embodiment has stronger thermal conductivity than thermal conductive silicone, and thus has stronger heat dissipation capability.

[0046] In some embodiments, the length of the phase change sheet 1331 is 1 mm-2 mm smaller than the width of the battery cell 1210 in the length direction of the phase change sheet 1331 , or the width of the phase change sheet 1331 is 5 mm smaller than the width of the bottom of the battery cell 1210 .

[0047] Under ideal conditions, that is, the length of the phase change sheet 1331 is equal to the length of the bottom of the battery cell 1210, the width of the bottom of the phase change sheet 1331 is equal to the width of the battery cell 1210, and the orthographic projection area of ​​the phase change sheet 1331 on the bottom of the battery cell 1210 is equal to the bottom area of ​​the battery cell 1210, the thermal conductivity of the phase change sheet 1331 is the strongest at this time. However, when bonding the phase change sheet 1331 to the bottom of the battery cell 1210, there will be certain errors whether it is machine bonding or manual bonding, and thus the above ideal conditions cannot be met.

[0048] Under the condition that the length of the phase change sheet 1331 is greater than the length of the bottom of the battery cell 1210, and the width of the bottom of the phase change sheet 1331 is greater than the width of the battery cell 1210, although the orthographic projection area of ​​part of the phase change sheet 1331 at the bottom of the battery cell 1210 can be ensured to be equal to the bottom area of ​​the battery cell 1210, the phase change sheet 1331 will block the ventilation duct 1321 of the air duct clamping plate 1320, thereby affecting the heat dissipation effect. At the same time, because the commonly used machine bonding method is CCD (Charge Coupled Device) technology automatic bonding, under the above conditions, the bottom of part of the battery cell 1210 will not be bonded with the phase change sheet 1331, thereby affecting the heat dissipation effect.

[0049] Therefore, it is necessary to control the length of the phase change sheet 1331 to be smaller than the length of the bottom of the battery cell 1210, and the width of the phase change sheet 1331 to be smaller than the width of the bottom of the battery cell 1210, so as to solve the problem caused by the error of the bonding method. Specifically, it is obtained from a large amount of test data that when the CCD technology is used to automatically bond the phase change sheet 1331 to the bottom of the battery cell 1210, the length of the phase change sheet 1331 is controlled to be 1mm to 2mm smaller than the length of the bottom of the battery cell 1210 in the length direction of the phase change sheet 1331, and the width of the phase change sheet 1331 is controlled to be 1mm-2mm smaller than the width of the bottom of the battery cell 1210 in the width direction of the phase change sheet 1331. At this time, the heat dissipation effect of the battery box 1000 is the best. When the phase change sheet 1331 is manually attached to the bottom of the battery cell 1210, the length of the phase change sheet 1331 is controlled to be 5 mm smaller than the length of the bottom of the battery cell 1210 in the length direction of the phase change sheet 1331, and the width of the phase change sheet 1331 is controlled to be 5 mm smaller than the width of the bottom of the battery cell 1210 in the width direction of the phase change sheet 1331. At this time, the heat dissipation effect of the battery box 1000 is best.

[0050] In one embodiment, the thickness of the phase change sheet 1331 is less than 0.4 mm, and the thickness of the phase change sheet 1331 is preferably 0.25 mm.

[0051] Specifically, it is obtained from the test data that when the thickness of the phase change sheet 1331 is greater than 0.4 mm, the thermal resistance of the phase change sheet 1331 is high, resulting in a low thermal conductivity of the phase change sheet 1331. When the thickness of the phase change sheet 1331 is less than 0.25 mm, the heat absorption efficiency of the phase change sheet 1331 is low. Therefore, when the thickness of the phase change sheet 1331 is designed to be less than 0.4 mm, the thermal conductivity of the phase change sheet 1331 is better. In addition, when the thickness of the phase change sheet 1331 is 0.25 mm, the thermal conductivity of the phase change sheet 1331 is the best.

[0052] In some embodiments, please refer to Figure 3 and Fig. 9 , Fig. 9 yes Figure 3 The battery box 1000 further includes a battery cell supporting plate 1400, which is located between the battery cell 1210 and the fan 1310 to support the battery cell 1210. The battery cell supporting plate 1400 is provided with at least one through hole 1410, and each through hole 1410 corresponds to the ventilation duct 1321 of the corresponding air duct clamping plate 1320.

[0053] Specifically, after the air enters from the box air inlet 1111 at the top of the upper box 1110, it passes through the ventilation duct 1321 of the air duct clamp 1320 to carry out the heat generated by the battery cell 1210. Through the perforations 1410 on the battery cell support plate 1400, the air reaches the fan exhaust 1312 of the fan 1310 from the fan exhaust port 1311 of the fan 1310, and finally discharges the battery box 1000 from the box air outlet 1121 of the lower box 1120, thereby achieving the heat dissipation function. It should be noted that in this embodiment, the number of air duct clamps 1320 is consistent with the number of box air inlets 1111 at the top of the upper box 1110 and the number of perforations 1410 on the battery cell support plate 1400, but is not limited thereto. The number of box air inlets 1111 and the number of perforations 1410 can be set and adjusted according to specific circumstances, and are not limited here.

[0054] In this embodiment, the battery cell 1210 is supported by the battery cell supporting plate 1400 to prevent the battery cell 1210 from directly contacting the fan 1310 and thus causing damage to the fan 1310 .

[0055] In some embodiments, the cell support plate 1400 is further provided with at least one groove (not shown in the figure), and each groove accommodates a corresponding phase change sheet 1331. Because when the phase change sheet 1331 absorbs heat, the phase change material therein gradually changes from a solid state to a liquid state, the cell support plate 1400 provided with grooves can accommodate and restrict the phase change sheet 1331 in a liquid state, and when the battery box 1000 is shaken, the flow area of ​​the phase change sheet 1331 in a liquid state is limited.

[0056] The embodiment of the utility model provides a battery box 1000, by placing a battery module 1200 in a box installation cavity, and installing a fan 1310 under the battery module 1200, and the fan suction port 1311 of the fan 1310 is connected to the box air inlet hole 1111, and the fan exhaust port 1312 is connected to the box air outlet hole 1121. Compared with the battery box 1000 in the related art, in which the fan 1310 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 will occupy a certain space on the front panel of the plug-in box. The present application solution fixes the fan 1310 under the battery module 1200. Therefore, the battery box 1000 structure of the present application solution can accommodate more fans 1310. At the same time, due to the suction force of the fan 1310, air can enter from the box air inlet 1111 of the upper box body 1110, and allow it to carry the heat generated by the battery module 1200, and then pass through the fan exhaust port 1311 and the fan exhaust port 1312, and finally be discharged from the box air outlet 1121 of the lower box body 1120, so that the battery box 1000 structure can form an air flow path from top to bottom, forming a good air duct structure, thereby enhancing the heat dissipation capacity of the battery box 1000.

[0057] The embodiment of the utility model further provides an outdoor cabinet, which includes at least two battery boxes 1000 as described above, wherein the box air outlet holes 1121 of two adjacent battery boxes 1000 are staggered.

[0058] In some embodiments, in order to stagger the positions of the box air outlet holes 1121 of two adjacent battery boxes 1000, the positions of the box air outlet holes 1121 of the two adjacent battery boxes 1000 can be designed, or the positions of the two adjacent battery boxes 1000 can be designed. Specifically, the axis of the box air outlet holes 1121 of one of the two adjacent battery boxes 1000 is perpendicular to the side plate of the battery box 1000, while the axis of the box air outlet holes 1121 of the other battery box 1000 is inclined relative to the side plate of the lower box 1120 of the battery box 1000; or, the two adjacent battery boxes 1000 are staggered with each other. In this way, the air discharged from the box air outlet holes 1121 of the two adjacent battery boxes 1000 will not be counter-charged, thereby ensuring the heat dissipation effect of the battery box 1000.

[0059] It should be noted that there is a certain distance between the two adjacent battery boxes 1000 . The specific distance can be set according to the specific situation and is not limited here.

[0060] The outdoor cabinet provided by the embodiment of the utility model has all the advantages of the above-mentioned battery box 1000, which will not be repeated here. In addition, the embodiment of the utility model staggers the positions of the box air outlet holes 1121 of two adjacent battery boxes 1000 in the outdoor cabinet, so that the air discharged from the two adjacent battery boxes 1000 will not be counter-charged, thereby ensuring the heat dissipation capacity of the outdoor cabinet.

[0061] 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: A box assembly, comprising an upper box and a lower box connected to each other, wherein the upper box and the lower box together form a box installation cavity; A battery module, located in the box installation cavity, including a plurality of battery cells; and A heat dissipation assembly is located in the housing installation cavity and includes one or more fans, wherein the fans are provided with a fan air intake port and a fan air exhaust port that are interconnected; Wherein, the upper box body is provided with one or more box body air inlet holes, and the lower box body is provided with one or more box body air outlet holes; the fan is located between the battery module and the lower box body to dissipate heat for the battery module, and a gas flow channel is formed between the fan exhaust port and the box body air inlet hole, and the flow channel passes through the battery module.

2. The battery box according to claim 1, characterized in that: The heat dissipation assembly also includes a plurality of air duct clamps, the battery module includes a plurality of the battery cells, an air duct clamp is sandwiched between two adjacent battery cells, the air duct clamp is thermally connected to the two battery cells, the air duct clamp is provided with a ventilation duct, one end of the ventilation duct is connected to the corresponding air inlet of the box, and the other end of the ventilation duct is connected to the air outlet of the box through the fan suction port and the fan exhaust port.

3. The battery box according to claim 2, characterized in that: The multiple box air inlet holes include two box air inlet hole groups, the multiple air duct plywood include two air duct plywood groups, the multiple battery cells include two battery cell groups, the multiple fans include two fan groups, and the multiple box air outlet holes include two box air outlet hole groups, and the air duct plywood of each air duct plywood group is located between two adjacent battery cells of the corresponding battery cell group; wherein the box air inlet holes of each box air inlet hole group are connected to the box air outlet holes of the corresponding box air outlet hole group through the air duct plywood of the corresponding air duct plywood group and the fan of the corresponding fan group, and the two box air inlet hole groups, the two air duct plywood groups, and the two battery cell groups are all arranged side by side, the two fan groups are arranged back to back, and the two box air outlet hole groups are arranged opposite to each other.

4. The battery box according to claim 2, characterized in that: The heat dissipation component also includes a phase change sheet component, and the phase change sheet component includes at least one phase change sheet. Each phase change sheet is thermally connected to the bottom of the corresponding battery core and faces the fan exhaust port.

5. The battery box according to claim 4, characterized in that: The length of the phase change sheet is 1mm-2mm smaller than the length of the bottom of the battery cell in the length direction of the phase change sheet, and the width of the phase change sheet is 1mm-2mm smaller than the width of the bottom of the battery cell in the width direction of the phase change sheet; or, The length of the phase change sheet is 5 mm smaller than the length of the bottom of the battery cell in the length direction of the phase change sheet, and the width of the phase change sheet is 5 mm smaller than the width of the bottom of the battery cell in the width direction of the phase change sheet.

6. The battery box according to claim 4, characterized in that: The thickness of the phase change sheet is less than 0.4 mm.

7. The battery box according to claim 4, characterized in that: It also includes a battery cell supporting plate installed in the box installation cavity, the battery cell supporting plate is located between the battery cell and the fan to support the battery cell, the battery cell supporting plate is provided with at least one through hole, each of the through holes corresponds to the ventilation duct of the corresponding air duct clamp.

8. The battery box according to claim 7, characterized in that: The battery core supporting plate is further provided with at least one groove, and each of the grooves accommodates the corresponding phase change sheet.

9. The battery box according to claim 1, characterized in that: The fan is installed on the lower box body, the fan suction port is arranged at the top of the fan and faces the bottom of the battery module, the fan exhaust port is arranged on the side of the fan, and the box body air outlet connected to the fan exhaust port is arranged on the side with the largest area in the lower box body.

10. An outdoor cabinet, characterized in that: Comprising at least two battery boxes as described in any one of claims 1 to 9, wherein the positions of the air outlet holes of the two adjacent battery boxes are staggered.

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