Heat dissipation air duct, box body, battery pack and electric equipment

Abstract

The utility model relates to the technical field of battery heat dissipation structures, in particular to a heat dissipation air duct, a box body, a battery pack and electric equipment, the heat dissipation air duct comprises a heat conduction inner wall, heat dissipation ribs are arranged on the heat conduction inner wall, the heat dissipation air duct is provided with an air inlet and an air outlet, and the heat dissipation ribs extend along the direction from the air inlet to the air outlet of the heat dissipation air duct. Spoilers are arranged on the heat dissipation ribs, each spoiler is provided with a windward side which forms an included angle with the direction from the air inlet to the air outlet, when airflow passes through the heat dissipation air channel from the air inlet to the air outlet, the windward sides of the spoilers can block the airflow and delay the airflow, the speed of the airflow passing through the heat dissipation air channel is slowed down, and therefore the airflow can pass through the heat dissipation air channel. Therefore, the time of the cold air remaining in the heat dissipation air channel is prolonged, sufficient heat exchange between the cold air and the heat conduction inner wall of the heat dissipation air channel is facilitated, sufficient utilization of the cooling capacity of the cold air is facilitated, and energy consumption required by heat dissipation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation structures, and in particular to a heat dissipation air duct and a box body, a battery pack, and electrical equipment. Background Art

[0002] As the power source of electric vehicles, the performance and life of power batteries are particularly important to electric vehicles. Temperature is an important factor affecting the performance and life of lithium-ion battery systems. However, battery modules will inevitably generate heat during the charging and discharging process, which will cause temperature rise, which not only increases the attenuation rate of lithium batteries, but also causes a series of safety issues. Therefore, it is very important to carry out corresponding thermal management based on the heat generation characteristics of lithium batteries during the charging and discharging process.

[0003] At present, air cooling is commonly used in battery packs, which has the characteristics of simple design, low manufacturing cost and high cooling efficiency. For example, in the battery pack disclosed in the utility model patent with the authorization announcement number CN219457781U, multiple battery modules can be placed in the box of the battery pack, and a heat dissipation duct is provided between two adjacent battery modules. The heat dissipation duct is flat, and the outer wall surfaces on both sides of the heat dissipation duct in the thickness direction are respectively used to stick to the sides of the two battery modules. The two ends of the heat dissipation duct in the length direction are respectively fixed on the two side walls of the box and are respectively provided with an air inlet and an air outlet. The direction from the air inlet to the air outlet is also the length direction of the heat dissipation duct. A fan is provided at the air inlet, and the fan blows air into the heat dissipation duct to form an airflow flowing from the air inlet to the air outlet in the heat dissipation duct. The heat dissipation duct has a heat-conducting inner wall for heat exchange with the airflow. The heat-conducting inner wall of the heat dissipation duct includes the inner walls on both sides of the heat dissipation duct opposite to each other in the thickness direction. The airflow is used to take away the heat on the heat-conducting inner wall to dissipate the battery modules in the box.

[0004] In order to improve the heat dissipation efficiency, there is a solution in the prior art to set heat dissipation ribs in the heat dissipation duct to increase the heat exchange area. The cross section of the heat dissipation duct perpendicular to its length direction is as follows: Figure 1 As shown, heat dissipation ribs 2 are provided between the heat-conducting inner walls 1 on both sides in the thickness direction of the heat dissipation air duct, the heat dissipation ribs 2 extend straightly along the length direction of the heat dissipation air duct, the heat dissipation ribs 2 are connected to the heat-conducting inner walls 1 on both sides in the thickness direction of the heat dissipation air duct, and a plurality of heat dissipation ribs 2 are provided along the width direction of the heat dissipation air duct. The surface of each heat dissipation rib 2 can be used to make the heat dissipation air duct and the airflow have a larger heat exchange area.

[0005] However, the heat dissipation duct of the above-mentioned structure has a relatively regular internal shape and a small gas flow resistance, so that the air flow will pass through the heat dissipation duct quickly. As a result, the cold air is discharged without sufficient heat exchange with the inner wall of the heat dissipation duct. The insufficient heat exchange is not conducive to the full utilization of the cold air's cooling capacity and will increase the energy consumption required for heat dissipation. Utility Model Content

[0006] The purpose of the utility model is to provide a heat dissipation duct to solve the problem of insufficient heat exchange caused by the current heat dissipation duct, in which the cold air is discharged without completely exchanging heat with the inner wall of the heat dissipation duct because the airflow passes through the heat dissipation duct too quickly; the purpose of the utility model is also to provide a box, a battery pack, and an electrical device to solve the above-mentioned problem.

[0007] The technical solution of the heat dissipation duct of the utility model is:

[0008] A heat dissipation duct comprises a heat-conducting inner wall, on which heat-dissipating ribs are arranged, the heat-dissipating duct has an air inlet and an air outlet, the heat-dissipating ribs extend from the air inlet to the air outlet of the heat-dissipating duct, the heat-dissipating ribs are arranged on the heat-dissipating ribs, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet.

[0009] Furthermore, the spoiler on the heat dissipation rib includes a first spoiler and a second spoiler, and the first spoiler and the second spoiler are respectively cantilevered toward two sides of the heat dissipation rib.

[0010] Furthermore, a slot is provided on the heat dissipation rib at the spoiler, and the spoiler is cantilevered obliquely based on a slot wall on one side of the slot.

[0011] Furthermore, at least two heat dissipation ribs are arranged in the heat dissipation duct along a direction perpendicular to the air inlet to the air outlet of the heat dissipation duct, and the spoilers on two adjacent heat dissipation ribs correspond one to one in the arrangement direction of each heat dissipation rib, and the overhang directions of the two corresponding spoilers on two adjacent heat dissipation ribs in the arrangement direction of each heat dissipation rib are the same.

[0012] Furthermore, the heat dissipation duct has a side wall in the arrangement direction of the heat dissipation ribs, and the side wall is provided with a process opening corresponding to the spoiler on the heat dissipation rib for bending to form the spoiler, and the process opening is equipped with a sealing piece.

[0013] Furthermore, the heat dissipation rib has a side surface extending in the direction from the air inlet to the air outlet, and the angle between the side surface and the windward surface is 20°-40°.

[0014] Furthermore, the spoiler is a cantilever structure, and the spoiler has a root portion connected to the heat dissipation rib, and the root portion of the spoiler is closer to the air inlet than the end portion.

[0015] The beneficial effects of the heat dissipation duct of the utility model: the utility model is improved on the basis of the heat dissipation duct in the prior art, a spoiler is arranged on the heat dissipation rib extending in the direction from the air inlet to the air outlet, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet. In this way, when the airflow passes through the heat dissipation duct from the air inlet to the air outlet, the windward surface of the spoiler will block the airflow and have a hysteresis effect on the airflow. The speed of the airflow through the heat dissipation duct is slowed down, which makes the cold air stay in the heat dissipation duct for a longer time, which is beneficial to sufficient heat exchange between the cold air and the heat-conducting inner wall of the heat dissipation duct, which is beneficial to full utilization of the cold air's cooling capacity and reduces the energy consumption required for heat dissipation.

[0016] The technical solution of the box of the utility model is:

[0017] A box body comprises a box body and a heat dissipation duct arranged on the box body, the heat dissipation duct comprises a heat-conducting inner wall, the heat-conducting inner wall is provided with heat dissipation ribs, the heat dissipation duct has an air inlet and an air outlet, the heat dissipation ribs extend from the air inlet to the air outlet of the heat dissipation duct, the heat dissipation ribs are provided with a spoiler, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet.

[0018] Furthermore, the spoiler on the heat dissipation rib includes a first spoiler and a second spoiler, and the first spoiler and the second spoiler are respectively cantilevered toward two sides of the heat dissipation rib.

[0019] Furthermore, a slot is provided on the heat dissipation rib at the spoiler, and the spoiler is cantilevered obliquely based on a slot wall on one side of the slot.

[0020] Furthermore, at least two heat dissipation ribs are arranged in the heat dissipation duct along a direction perpendicular to the air inlet to the air outlet of the heat dissipation duct, and the spoilers on two adjacent heat dissipation ribs correspond one to one in the arrangement direction of each heat dissipation rib, and the overhang directions of the two corresponding spoilers on two adjacent heat dissipation ribs in the arrangement direction of each heat dissipation rib are the same.

[0021] Furthermore, the heat dissipation duct has a side wall in the arrangement direction of the heat dissipation ribs, and the side wall is provided with a process opening corresponding to the spoiler on the heat dissipation rib for bending to form the spoiler, and the process opening is equipped with a sealing piece.

[0022] Furthermore, the heat dissipation rib has a side surface extending in the direction from the air inlet to the air outlet, and the angle between the side surface and the windward surface is 20°-40°.

[0023] Furthermore, the spoiler is a cantilever structure, and the spoiler has a root portion connected to the heat dissipation rib, and the root portion of the spoiler is closer to the air inlet than the end portion.

[0024] The beneficial effects of the box body of the utility model: the utility model is improved on the basis of the heat dissipation duct of the box body in the prior art, a spoiler is arranged on the heat dissipation rib extending in the direction from the air inlet to the air outlet, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet. In this way, when the airflow passes through the heat dissipation duct from the air inlet to the air outlet, the windward surface of the spoiler will block the airflow and have a hysteresis effect on the airflow, slowing down the speed of the airflow through the heat dissipation duct, prolonging the time that the cold air stays in the heat dissipation duct, which is beneficial to sufficient heat exchange between the cold air and the heat-conducting inner wall of the heat dissipation duct, and is beneficial to full utilization of the cold air's cooling capacity and reducing the energy consumption required for heat dissipation.

[0025] The technical solution of the battery pack of the utility model is:

[0026] A battery pack comprises a box body and a battery module. The box body comprises a box body and a heat dissipation duct arranged on the box body. The heat dissipation duct is used to dissipate heat from the battery module. The heat dissipation duct comprises a heat-conducting inner wall. Heat dissipation ribs are arranged on the heat-conducting inner wall. The heat dissipation duct has an air inlet and an air outlet. The heat dissipation ribs extend from the air inlet to the air outlet of the heat dissipation duct. A spoiler is arranged on the heat dissipation rib. The spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet.

[0027] Furthermore, the spoiler on the heat dissipation rib includes a first spoiler and a second spoiler, and the first spoiler and the second spoiler are respectively cantilevered toward two sides of the heat dissipation rib.

[0028] Furthermore, a slot is provided on the heat dissipation rib at the spoiler, and the spoiler is cantilevered obliquely based on a slot wall on one side of the slot.

[0029] Furthermore, at least two heat dissipation ribs are arranged in the heat dissipation duct along a direction perpendicular to the air inlet to the air outlet of the heat dissipation duct, and the spoilers on two adjacent heat dissipation ribs correspond one to one in the arrangement direction of each heat dissipation rib, and the overhang directions of the two corresponding spoilers on two adjacent heat dissipation ribs in the arrangement direction of each heat dissipation rib are the same.

[0030] Furthermore, the heat dissipation duct has a side wall in the arrangement direction of the heat dissipation ribs, and the side wall is provided with a process opening corresponding to the spoiler on the heat dissipation rib for bending to form the spoiler, and the process opening is equipped with a sealing piece.

[0031] Furthermore, the heat dissipation rib has a side surface extending in the direction from the air inlet to the air outlet, and the angle between the side surface and the windward surface is 20°-40°.

[0032] Furthermore, the spoiler is a cantilever structure, and the spoiler has a root portion connected to the heat dissipation rib, and the root portion of the spoiler is closer to the air inlet than the end portion.

[0033] The beneficial effects of the battery pack of the present invention: the utility model is improved on the basis of the heat dissipation duct of the battery pack in the prior art, and a spoiler is arranged on the heat dissipation rib extending in the direction from the air inlet to the air outlet, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet. In this way, when the airflow passes through the heat dissipation duct from the air inlet to the air outlet, the windward surface of the spoiler will block the airflow and have a hysteresis effect on the airflow. The speed of the airflow through the heat dissipation duct is slowed down, which makes the cold air stay in the heat dissipation duct for a longer time, which is beneficial to sufficient heat exchange between the cold air and the heat-conducting inner wall of the heat dissipation duct, which is beneficial to full utilization of the cold air's cooling capacity and reduces the energy consumption required for heat dissipation.

[0034] The technical solution of the electric equipment of the utility model is:

[0035] An electrical device includes a battery pack, which includes a box body and a battery module. The box body includes a box body and a heat dissipation duct arranged on the box body. The heat dissipation duct is used to dissipate heat from the battery module. The heat dissipation duct includes a heat-conducting inner wall, and the heat-conducting inner wall is provided with heat dissipation ribs. The heat dissipation duct has an air inlet and an air outlet. The heat dissipation ribs extend from the air inlet to the air outlet of the heat dissipation duct. A spoiler is provided on the heat dissipation rib, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet.

[0036] Furthermore, the spoiler on the heat dissipation rib includes a first spoiler and a second spoiler, and the first spoiler and the second spoiler are respectively cantilevered toward two sides of the heat dissipation rib.

[0037] Furthermore, a slot is provided on the heat dissipation rib at the spoiler, and the spoiler is cantilevered obliquely based on a slot wall on one side of the slot.

[0038] Furthermore, at least two heat dissipation ribs are arranged in the heat dissipation duct along a direction perpendicular to the air inlet to the air outlet of the heat dissipation duct, and the spoilers on two adjacent heat dissipation ribs correspond one to one in the arrangement direction of each heat dissipation rib, and the overhang directions of the two corresponding spoilers on two adjacent heat dissipation ribs in the arrangement direction of each heat dissipation rib are the same.

[0039] Furthermore, the heat dissipation duct has a side wall in the arrangement direction of the heat dissipation ribs, and the side wall is provided with a process opening corresponding to the spoiler on the heat dissipation rib for bending to form the spoiler, and the process opening is equipped with a sealing piece.

[0040] Furthermore, the heat dissipation rib has a side surface extending in the direction from the air inlet to the air outlet, and the angle between the side surface and the windward surface is 20°-40°.

[0041] Furthermore, the spoiler is a cantilever structure, and the spoiler has a root portion connected to the heat dissipation rib, and the root portion of the spoiler is closer to the air inlet than the end portion.

[0042] The beneficial effects of the electrical equipment of the present invention: the present invention is improved on the basis of the heat dissipation duct of the battery pack of the electrical equipment in the prior art, and a spoiler is arranged on the heat dissipation rib extending in the direction from the air inlet to the air outlet, and the spoiler has a windward surface arranged at an angle to the direction from the air inlet to the air outlet. In this way, when the airflow passes through the heat dissipation duct from the air inlet to the air outlet, the windward surface of the spoiler will block the airflow and have a hysteresis effect on the airflow. The speed of the airflow through the heat dissipation duct is slowed down, which makes the cold air stay in the heat dissipation duct for a longer time, which is beneficial to sufficient heat exchange between the cold air and the heat-conducting inner wall of the heat dissipation duct, which is beneficial to full utilization of the cold air's cooling capacity and reduces the energy consumption required for heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a cross-sectional schematic diagram of a heat dissipation duct in the prior art;

[0044] Figure 2 It is a structural schematic diagram of an embodiment of the heat dissipation duct of the utility model;

[0045] Figure 3 for Figure 2 Schematic diagram of the cavity in FIG.

[0046] Figure 4 for Figure 3 A schematic diagram of the cavity without one side wall in the thickness direction;

[0047] Figure 5 for Figure 3 A front view of the cavity in FIG.

[0048] Figure 6 for Figure 4 Schematic diagram of the local structure.

[0049] In the figure: 1. heat-conducting inner wall; 2. heat dissipation ribs; 100. cavity; 200. inlet flange; 300. outlet flange; 3. first side wall; 4. second side wall; 5. spoiler; 6. process port. DETAILED DESCRIPTION

[0050] The heat dissipation duct of the utility model is provided with a spoiler on the heat dissipation rib extending in the direction from the air inlet to the air outlet, and the spoiler has a windward surface arranged at an angle with the direction from the air inlet to the air outlet. In this way, when the airflow passes through the heat dissipation duct from the air inlet to the air outlet, the windward surface of the spoiler will block the airflow and have a hysteresis effect on the airflow, slowing down the speed of the airflow through the heat dissipation duct, thereby prolonging the time that the cold air stays in the heat dissipation duct, which is beneficial to sufficient heat exchange between the cold air and the heat-conducting inner wall of the heat dissipation duct, and is beneficial to fully utilizing the cold amount of the cold air and reducing the energy consumption required for heat dissipation.

[0051] Embodiment of the heat dissipation duct of the utility model:

[0052] The heat dissipation duct in this embodiment is used to be arranged between two adjacent battery modules of the battery pack to dissipate heat from the battery modules. Figure 2 As shown, the heat dissipation duct includes two cavities 100 spaced apart from each other, an inlet flange 200, and an outlet flange 300. The cavity 100 is flat, the width direction of the cavity 100 is the up-down direction, the length direction of the cavity 100 is the front-to-back direction, and the thickness direction is the left-right direction. The front and rear ends of the cavity 100 are connected to the inlet flange 200 and the outlet flange 300 respectively. The inlet flange 200 and the outlet flange 300 are respectively provided with openings connected to the upper and lower cavities 100. The opening on the inlet flange 200 constitutes the air inlet of the heat dissipation duct, and the opening on the outlet flange 300 constitutes the air outlet of the heat dissipation duct. The direction from the air inlet to the air outlet of the heat dissipation duct is the front-to-back direction, and the front-to-back direction is also the length direction of the heat dissipation duct. The heat dissipation duct is fixedly installed on the front and rear side walls of the battery pack body through its inlet flange 200 and outlet flange 300. The battery pack body is provided with a avoidance port for avoiding the heat dissipation duct and a fan for supplying air to the heat dissipation duct, so that the cold air forms an airflow through the heat dissipation duct from front to back, thereby dissipating the battery modules on the left and right sides of the heat dissipation duct.

[0053] like Figure 2 , Figure 3 As shown, the cavity 100 has a first side wall 3 and a second side wall 4. The first side wall 3 is a side wall in the thickness direction of the cavity 100, and the second side wall 4 is a side wall in the width direction of the cavity 100. There are two first side walls 3, namely the left side wall and the right side wall. There are two second side walls 4, namely the upper side wall and the lower side wall. The inner wall surfaces of each side wall of the cavity 100 can be used for heat conduction, wherein the inner wall surfaces of the two first side walls 3 constitute the heat-conducting inner walls 1 on both sides opposite to each other in the thickness direction of the heat dissipation duct, that is, the heat-conducting inner walls 1 on the left and right sides, and heat dissipation ribs 2 are arranged between the heat-conducting inner walls 1 on the left and right sides. The heat dissipation ribs 2 extend straight in the front-to-back direction, and the heat dissipation ribs 2 are flat structures. The thickness direction of the heat dissipation ribs 2 is the up-down direction, and the upper and lower side surfaces of the heat dissipation ribs 2 are for air flow to pass through. The left and right ends of the heat dissipation ribs 2 are respectively connected to the heat-conducting inner walls 1 on the left and right sides. There are multiple heat dissipation ribs 2 in the cavity 100, and each heat dissipation rib 2 is arranged at intervals in the up-down direction. The heat dissipation ribs 2 can be used to increase the contact area between the heat dissipation duct and the airflow, thereby improving the heat dissipation effect.

[0054] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, a spoiler 5 is provided on the heat dissipation rib 2, and the spoiler 5 has a windward surface arranged at an angle with the air flow direction in the heat dissipation duct. The air flow direction in the heat dissipation duct is also the direction from the air inlet to the air outlet. The windward surface of the spoiler 5 will block the airflow and have a hysteresis effect on the airflow. The speed of the airflow through the heat dissipation duct is slowed down, and the time that the cold air stays in the heat dissipation duct is prolonged, which is beneficial to sufficient heat exchange between the cold air and the inner wall surface of the heat dissipation duct, which is beneficial to full utilization of the cold air's cooling capacity and reduce the energy consumption required for heat dissipation.

[0055] The upper and lower adjacent heat dissipation ribs 2 and the two first side walls 3 form an air flow passage that passes through the front and back, the upper second side wall 4 and the adjacent heat dissipation ribs 2 and the two first side walls 3 form an air flow passage that passes through the front and back, and the lower second side wall 4 and the adjacent heat dissipation ribs 2 and the two first side walls 3 form an air flow passage that passes through the front and back. In order to enable the air flow in the air flow passage to more fully exchange heat, the heat dissipation rib 2 is provided with a spoiler 5 that is tilted upward and a spoiler 5 that is tilted downward, and the upper second side wall 4 A spoiler 5 is provided on the top and is inclined to be cantilevered downward, and a spoiler 5 is provided on the lower second side wall 4 and is inclined to be cantilevered upward. The spoiler 5 inclined to be cantilevered upward and the spoiler inclined to be cantilevered downward on the heat dissipation rib 2 respectively constitute the first spoiler and the second spoiler on the heat dissipation rib 2, and the first spoiler and the second spoiler are respectively cantilevered toward the upper and lower sides of the heat dissipation rib 2. The spoiler 5 arranged in this way can make the spoiler 5 in the upper space and the lower space of the airflow channel have a hysteresis effect on the airflow, which is conducive to sufficient heat exchange.

[0056] The spoiler 5 is a cantilever structure, a slot is provided on the heat dissipation rib 2 at the spoiler 5, a slot is provided on the second side wall 4 at the spoiler 5, the slot is an up-and-down through slot, the spoiler 5 is tilted and cantilevered based on one side slot wall of the slot, the root of the spoiler 5 is connected to one side slot wall of the slot, the end of the spoiler 5 is tilted, so as to facilitate the bending and forming of the spoiler 5, the spoiler 5 tilted and cantilevered upward is bent upward, and the spoiler 5 tilted and cantilevered downward is bent downward. The root of the spoiler 5 is closer to the air inlet than the end, the end of the spoiler 5 is close to the air outlet, the root of the spoiler 5 is close to the air inlet, the side of the spoiler 5 tilted upward that is bent upward constitutes its windward surface, and the side of the spoiler 5 tilted downward that is bent downward constitutes its windward surface, and the windward surface can guide the airflow to pass through, so as to avoid causing excessive obstruction to the airflow. The angle between the side surface of the heat dissipation rib 2 in the up and down direction and the windward surface of the spoiler 5 is 30°, which is also the bending angle of the spoiler 5. The bending angles of the spoilers 5 are the same, which has a hysteresis effect on the airflow without causing much impact on the smooth passage of the airflow through the heat dissipation duct.

[0057] The spoilers 5 on the two adjacent heat dissipation ribs 2 correspond to each other in the up-down direction, and the two corresponding spoilers 5 on the two adjacent heat dissipation ribs 2 have the same overhang direction, that is, the spoilers 5 on each heat dissipation rib 2 are arranged in multiple rows in the front-to-back direction, and the spoilers 5 in the same row are distributed on each heat dissipation rib 2 and correspond to each other in the up-down position, and the spoilers 5 in the same row have the same overhang direction, which is convenient for forming the spoilers 5. The spoilers 5 that are inclined upwardly overhanging and the spoilers 5 that are inclined downwardly overhanging on the heat dissipation rib 2 are alternately arranged in the front-to-back direction, which is conducive to disturbing the airflow for sufficient heat exchange.

[0058] The spoiler 5 on the second side wall 4 has the same overhanging direction as the spoiler 5 in the corresponding row, the spoiler 5 on the upper second side wall 4 corresponds to the upper and lower positions of the spoiler 5 in the corresponding row obliquely overhanging downward, the spoiler 5 on the lower second side wall 4 corresponds to the upper and lower positions of the spoiler 5 in the corresponding row obliquely overhanging upward, the upper second side wall 4 is provided with a process opening 6 corresponding to the upper and lower positions of the spoiler 5 in the corresponding row obliquely overhanging upward, and the lower second side wall 4 is provided with a process opening 6 corresponding to the upper and lower positions of the spoiler 5 in the corresponding row obliquely overhanging downward, so that after the slot is cut, the process opening 6 is used to cooperate with the tooling to be inserted, and the tooling passes through the cavity in the upper and lower directions to bend the spoiler 5 into shape, so as to facilitate the production of the spoiler 5 in the heat dissipation duct. The process opening 6 is equipped with a blocking piece (not shown in the figure), and after the spoiler 5 is formed, the blocking piece is fixed at the process opening 6 to block the process opening 6 to ensure the sealing of the heat dissipation duct.

[0059] In other embodiments, the spoiler that tilts downward may not be provided. In this case, the spoilers on each heat dissipating rib have the same overhanging direction.

[0060] In other embodiments, the heat dissipation rib may not be grooved, and the spoiler may be protruded on the side of the heat dissipation rib. In this case, the spoiler, the heat dissipation rib and the right side wall and the upper and lower side walls may be formed integrally first, and the left side wall may be formed separately and then welded together.

[0061] In other embodiments, one of the two adjacent spoilers can be cantilevered upward and the other cantilevered downward. In this case, if there is enough space in the air flow channel, there is no need to set a process port, and the air flow channel can be used to provide operating space for bending the spoiler.

[0062] In other embodiments, the angle between the side surface of the heat dissipating rib in the up and down direction and the windward surface is 20° or 40°.

[0063] In other implementations, the root of the spoiler may be further away from the air inlet than the tip.

[0064] Embodiment of the box of the utility model:

[0065] The box body includes a box body and a heat dissipation duct arranged on the box body. The heat dissipation duct in this embodiment has the same structure as the heat dissipation duct in the above-mentioned embodiment of the heat dissipation duct, which will not be repeated here.

[0066] Embodiment of the battery pack of the utility model:

[0067] The battery pack includes a box body and a battery module. The box body includes a box body and a heat dissipation duct arranged on the box body. The heat dissipation duct in this embodiment has the same structure as the heat dissipation duct in the above-mentioned heat dissipation duct embodiment, which will not be repeated here.

[0068] Embodiment of the electric equipment of the utility model:

[0069] The electrical equipment includes a battery pack, the battery pack includes a box body and a battery module, the box body includes a box body and a heat dissipation duct arranged on the box body, and the heat dissipation duct in this embodiment has the same structure as the heat dissipation duct in the above-mentioned heat dissipation duct embodiment, which will not be repeated here.

[0070] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat dissipation duct, comprising a heat-conducting inner wall, on which heat dissipation ribs are arranged, the heat dissipation duct having an air inlet and an air outlet, the heat dissipation ribs extending from the air inlet to the air outlet of the heat dissipation duct, characterized in that: A spoiler is arranged on the heat dissipation rib, and the spoiler has a windward surface arranged at an angle with the direction from the air inlet to the air outlet.

2. The heat dissipation duct according to claim 1, characterized in that: The spoiler on the heat dissipation rib comprises a first spoiler and a second spoiler, and the first spoiler and the second spoiler are respectively cantilevered toward two sides of the heat dissipation rib.

3. The heat dissipation duct according to claim 1 or 2, characterized in that: A slot is arranged on the heat dissipation rib at the spoiler, and the spoiler is tilted and cantilevered based on a slot wall on one side of the slot.

4. The heat dissipation duct according to claim 3, characterized in that: At least two heat dissipation ribs are arranged in the heat dissipation duct along the direction from the air inlet to the air outlet perpendicular to the heat dissipation duct, and the spoilers on two adjacent heat dissipation ribs correspond one to one in the arrangement direction of each heat dissipation rib, and the overhang directions of the two spoilers on two adjacent heat dissipation ribs that correspond in the arrangement direction of each heat dissipation rib are the same.

5. The heat dissipation duct according to claim 4, characterized in that: The heat dissipation duct has a side wall in the arrangement direction of each heat dissipation rib, and the side wall is provided with a process opening corresponding to the spoiler on the heat dissipation rib for bending and forming the spoiler, and the process opening is equipped with a blocking piece.

6. The heat dissipation duct according to claim 1 or 2, characterized in that: The heat dissipation rib has a side surface extending in the direction from the air inlet to the air outlet, and the angle between the side surface and the windward surface is 20°-40°.

7. The heat dissipation duct according to claim 1 or 2, characterized in that: The spoiler is a cantilever structure, and the spoiler has a root portion connected to the heat dissipation rib, and the root portion of the spoiler is closer to the air inlet than the end portion.

8. A box body, comprising a box body and a heat dissipation duct arranged on the box body, characterized in that: The heat dissipation duct is the heat dissipation duct described in any one of claims 1 to 7.

9. A battery pack, comprising a box and a battery module, wherein the box comprises a box body and a heat dissipation duct arranged on the box body, the heat dissipation duct is used to dissipate heat from the battery module, and is characterized in that: The heat dissipation duct is the heat dissipation duct described in any one of claims 1 to 7.

10. An electrical device, comprising a battery pack, the battery pack comprising a box and a battery module, the box comprising a box body and a heat dissipation duct arranged on the box body, the heat dissipation duct is used to dissipate heat from the battery module, wherein: The heat dissipation duct is the heat dissipation duct described in any one of claims 1 to 7.

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