Battery pack air-cooling heat dissipation structure for energy storage and battery module

Abstract

The utility model discloses a battery pack air-cooling heat dissipation structure for energy storage and a battery module. The battery pack air-cooling heat dissipation structure comprises a plurality of honeycomb flow guide structural members, and flow guide channels turning from a first direction to a second direction are arranged in the honeycomb flow guide structural members; the honeycomb flow guide structural member is spatially provided with at least one symmetric group in the X direction and at least one symmetric group in the Y direction, so that air from the same Z direction is turned to the opposite X direction and the opposite Y direction respectively; an air inlet assembly is arranged above the honeycomb flow guide structural part and used for enabling inlet air in other directions to enter a flow guide channel of the honeycomb flow guide structural part in the Z direction after turning. According to the air-cooled heat dissipation structure and the battery module, a reasonable space design is adopted, airflow is distributed in multiple dimensions, the problem that the heat dissipation area in the battery is not uniform is solved, the heat dissipation efficiency is improved, a heat dissipation blind area is avoided, the occupied space is reduced, and the air-cooled heat dissipation structure and the battery module which are good in heat dissipation effect, low in cost and high in safety coefficient are obtained.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery pack structure, specifically to an air-cooled heat dissipation structure and battery module for energy storage battery packs. Background Technology

[0002] With the increasing demand for home energy storage batteries and small commercial energy storage batteries, traditional energy storage cabinets rely on passive heat dissipation, which accelerates electrolyte decomposition, SEI film failure, and even triggers a chain reaction of thermal runaway. The lifespan degradation is irreversible. Under long-term high temperature environment, the battery internal resistance increases, the capacity decay rate increases, and the temperature difference between batteries is too large, which may cause overheating risk due to inconsistency.

[0003] Natural heat dissipation involves mounting the battery modules on an energy storage cabinet, with the large surface of the battery in close contact with the metal cabinet, thus conducting the heat from the modules to the outside air. This method has a simple structure but poor heat dissipation, making it unsuitable for energy storage battery pack systems that require long-term, high-rate charging and discharging.

[0004] Liquid cooling systems require customized layouts for the liquid cooling pipes covering the module surface, resulting in more interfaces, greater sealing difficulties, and increased risk of leakage. They also require auxiliary equipment such as circulating pumps and heat exchangers, increasing the system weight by 20%-30%. The coolant needs to be replaced regularly, and the complex piping requires professional maintenance, making the overall cost 40%-60% higher than that of air-cooled systems.

[0005] Traditional air-cooling systems use fans, ducts, and other equipment and structures to carry away heat from the surface of the energy storage battery, thus cooling the battery pack system. However, the duct design is prone to creating a "sandwich effect" where heat dissipates quickly at the edges and accumulates in the center. This results in excessive temperature differences between the internal cells, making it difficult to meet the internal cooling needs of the battery. This necessitates the addition of an air conditioning system, which may lead to a secondary increase in energy consumption and cost. In addition, open-type air cooling systems are prone to drawing in dust, causing filter blockage, and humid environments may cause condensation short circuits inside the cabinet.

[0006] Traditional heat dissipation solutions have systemic defects in terms of efficiency, cost, safety, and structure, making it difficult to meet the heat dissipation requirements of new energy storage systems.

[0007] Therefore, while ensuring heat dissipation, it is necessary to address the problems of poor heat dissipation, low safety factor, complex pipeline design, and high cost of existing household energy storage batteries and small commercial energy storage batteries. Utility Model Content

[0008] This utility model addresses the problems of poor heat dissipation, low safety factor, and complex pipeline design in the existing technology. It discloses a wind-cooled heat dissipation structure and battery module for energy storage battery packs. By using a honeycomb flow guiding structure for flow guiding design and reasonable spatial layout, we have obtained a wind-cooled heat dissipation structure with good heat dissipation effect, low cost, and high safety factor.

[0009] This utility model is achieved through the following technical solution:

[0010] This utility model first provides a wind-cooled heat dissipation structure for energy storage battery packs, including several honeycomb flow guiding structural components, wherein the honeycomb flow guiding structural components are provided with flow guiding channels that turn from a first direction to a second direction.

[0011] The cellular airflow guiding structure has at least one set of symmetrical groups along the X direction and at least one set of symmetrical groups along the Y direction in space, which respectively turn air from the same Z direction to opposite X and opposite Y directions;

[0012] An air inlet assembly is installed above the honeycomb airflow guide structure to direct airflow from other directions into the airflow guide channel of the honeycomb airflow guide structure along the Z direction after being turned.

[0013] The above-mentioned design of this utility model, through the setting of the honeycomb structure, achieves a reasonable spatial design and layout, improves the heat dissipation effect, and solves the problems of small heat dissipation area and low heat dissipation efficiency in the battery module; the airflow channel adopts a deflection setting, which adjusts and improves the airflow distribution, improves the heat dissipation efficiency, and thus increases the integration effect of the component with the heat dissipation system; the honeycomb airflow guiding structure adopts a symmetrical setting, which achieves a reasonable spatial layout and multi-dimensional airflow distribution, improving the heat dissipation efficiency; the air inlet component is set at the top, which increases the internal airflow through external air cooling, and at the same time, the air inlet deflection method of this component reduces the space occupation and reduces the impact of direct airflow on the internal structural components, achieving a safe, efficient, and low-cost heat dissipation effect.

[0014] As a further embodiment, the honeycomb flow guiding structure has at least two flow guiding channels, and the extension direction of each flow guiding channel is perpendicular to the thickness direction of the honeycomb flow guiding structure, with no intersection between adjacent flow guiding channels.

[0015] As a further option, and as a preferred feasible method that does not form an intersection, adjacent guide channels are parallel to each other on the first directional guide section, and adjacent guide channels are parallel to each other on the second directional guide section.

[0016] As a further option, in the same flow channel, the first direction flow section and the second direction flow section are connected by a flow turning section. The turning method of the flow turning section is not limited; it can be a circular arc turn or a right angle turn.

[0017] As a further embodiment, the first directional guiding section refers to the section whose extension direction is parallel to the first direction of the guiding channel, the second directional guiding section refers to the section whose extension direction is parallel to the second direction of the guiding channel, and the guiding turning section is used to realize the connection and turning between the first directional guiding section and the second directional guiding section. The first directional guiding section, the second directional guiding section and the guiding turning section are only used to describe the extension direction of the guiding channel, and their length and boundary position are not limited.

[0018] As a further solution, in some special cases, the length of the first directional guide segment, the second directional guide segment, or the guide turning segment can be 0. For example, when the guide channel extends in a 45° arc shape, it can be considered that the length of the first directional guide segment and the second directional guide segment is 0 and the length of the guide turning segment is the same as the length of the entire guide channel. When the guide channel extends in a 90° right angle shape, it can be considered that the length of the guide turning segment is 0 and the sum of the lengths of the first directional guide segment and the second directional guide segment is the same as the length of the entire guide channel.

[0019] As a further embodiment, in the honeycomb flow guiding structure, the flow guiding channels are evenly distributed in a parallel and staggered manner on any cross-sectional plane in its extension direction. The portion distributed within the thickness range of the honeycomb flow guiding structure forms a complete four-sided closed flow guiding channel inside the honeycomb flow guiding structure, while the portion distributed at the thickness edge of the honeycomb flow guiding structure forms an open flow guiding channel on the surface of the honeycomb flow guiding structure.

[0020] As a further preferred embodiment, in the honeycomb flow guiding structure, when the large surface area of ​​the honeycomb flow guiding structure is nW mm... When nW mm, where nW is the length or width of the large surface of the 700mm honeycomb flow guide structure, W is the unit length, and n is the number of unit lengths in the length or width direction, the thickness D of the honeycomb flow guide structure is designed to be 0.29W≤D≤0.50W, and the large diameter d of the flow guide channel is designed to be 0.16W≤d≤0.17W. In this case, the total number of flow guide channels in the thickness direction of the honeycomb flow guide structure is less than three.

[0021] For example, it can be two closed-loop guide channels, or one closed-loop guide channel and two open guide channels. The sum of the cross-sectional areas of the two open guide channels is greater than, equal to or less than the cross-sectional area of ​​the closed-loop guide channel.

[0022] In this design, the flow channels are arranged in parallel and staggered patterns on any cross-section along the extension direction, forming a combination of closed-circuit and open flow channels. This layout ensures uniform wall thickness at the connection points between adjacent channels, avoiding localized stress concentration. The complete boundary of the closed-circuit flow channels provides stable support for the structural components, improving the compressive strength of the connection points. Simultaneously, the connection points between the flow channels form a stable support structure, working in conjunction with the honeycomb flow structure to resist external forces. The ratio of the major diameter d of the flow channel to the thickness D of the honeycomb flow structure is controlled within a reasonable range, ensuring sufficient material thickness at the connection points to provide basic compressive support. This avoids structural damage caused by excessively thin connection points and balances lightweight design with structural strength requirements. Therefore, the connection points between the flow channels have sufficient support strength, and the actual structure meets the design requirements. Furthermore, the honeycomb flow structure used in this design significantly improves heat dissipation efficiency by optimizing the airflow path and enhancing turbulence.

[0023] Its honeycomb airflow guiding structure, through its honeycomb porous layout, not only increases the heat dissipation surface area but also achieves uniform airflow distribution and low-speed turbulence, effectively breaking the boundary layer thermal resistance and allowing cold air to fully contact the heat source. At the same time, the honeycomb structure reduces wind resistance loss, and combined with the airflow guiding design, it can accelerate the heat exchange rate, resulting in a significant improvement in heat dissipation efficiency compared to traditional flat plate airflow guiding solutions. It is especially suitable for heat dissipation scenarios of home energy storage batteries and small commercial energy storage batteries.

[0024] As a further embodiment, the air intake assembly includes an air intake duct and a first air intake fan integrated inside or at an opening therein, the air intake assembly being disposed on the pack cover.

[0025] As a further embodiment, the pack cover is provided with air inlet holes that communicate with the air inlet duct and the inside of the pack respectively; the air inlet holes are used to connect the air inlet assembly and the honeycomb flow guide structure inside the pack to achieve efficient airflow into the honeycomb flow guide structure.

[0026] As a further improvement, the air inlet is preferably located above the geometric center of the large surface of the pack cover.

[0027] As a further improvement, a second air intake fan is also provided inside the air intake hole of the pack cover; by working in conjunction with the air intake component, the air intake power is enhanced, and the air cooling efficiency of the system is significantly improved.

[0028] As a further improvement, the shape of the air inlet is not limited, but is preferably one or more of the following: circular, square, rectangular, regular pentagon, and regular hexagon. More preferably, it is a regular hexagonal honeycomb-shaped air inlet. By providing air inlets on the pack cover, large particles such as stones can be prevented from entering the structural components and blocking the channels, increasing the air intake area and improving heat dissipation efficiency.

[0029] As a further embodiment, the air inlet duct is curved and includes an air inlet end and an air outlet end. The extension directions of the air inlet end and the air outlet end form an angle with each other. The angle is not limited and the airflow direction can be adjusted as needed.

[0030] As a further solution, the air outlet extends in a direction parallel to the Z-direction, that is, perpendicular to the large surface of the pack cover. The setting of the air inlet duct greatly increases the efficiency of airflow and heat dissipation. At the same time, the bent design of the air inlet duct reduces the wear and tear of the internal structural components caused by wind shear force.

[0031] As a further embodiment, one or more first intake fans are provided at the air intake opening of the air intake duct; preferably, one first intake fan is provided. Providing a first intake fan at the air intake end significantly improves the system's air-cooling efficiency and increases the amount of external cold air entering the air-cooling structure.

[0032] As a further improvement, the cross-sectional shape of the air inlet duct is not limited, but is preferably square.

[0033] As a further improvement, the bend in the air inlet duct is preferably a 90° bend, that is, the angle formed by the extension directions of the air inlet end and the air outlet end is 90°.

[0034] As a further embodiment, the honeycomb flow guiding structure 700 is orthogonally arranged in the X and Y directions, dividing the space into several array-distributed accommodating areas for accommodating the battery pack in separate zones. This zoned arrangement facilitates the placement and management of the battery pack within the accommodating areas, increases the integration effect between components, and simultaneously improves the heat dissipation contact area between the battery pack and the honeycomb flow guiding structure. The multi-dimensional fit between the honeycomb flow guiding structure and the battery pack further enhances heat dissipation efficiency.

[0035] As a further embodiment, the receiving area is supported by a number of support frames, including a bottom support frame and side support frames.

[0036] As a further embodiment, the bottom support frame is arranged according to the distribution of the receiving areas, located around the bottom of each receiving area.

[0037] As a further embodiment, the side support frames are located at the four corners of the receiving area edge, and the four side support frames are arranged along the Z direction.

[0038] As a further option, the material and connection method of the support frame are not limited, but aluminum is preferred. The aluminum support ensures the structural rigidity of the main body and longitudinal structure, and also provides an area for fixing the battery pack and installing other auxiliary materials.

[0039] As a further embodiment, a pack box is provided on the outer periphery of the cellular flow guiding structure, including the pack box cover, as well as 4 pack box side plates and 1 pack box bottom plate.

[0040] As a further embodiment, the pack side panel surrounds the outer periphery of the honeycomb flow guiding structure; a pack bottom plate is located below the honeycomb flow guiding structure and is seamlessly connected to the pack side panel.

[0041] As a further embodiment, air vents are provided on the side panel of the pack box, located at the center of the outer side of each containment area enclosed by the honeycomb airflow guiding structure and the side panel of the pack box.

[0042] As a further option, the shape of the air outlet is not specified, but is preferably one or more of the following: circular, square, rectangular, regular pentagon, and regular hexagon, and more preferably a regular hexagonal honeycomb air outlet.

[0043] As a further embodiment, the pack box is also equipped with an exhaust fan, which is connected to the inside of the air outlet on the side panel of the pack box. The number of exhaust fans is not limited.

[0044] As a further option, the size of the air outlet and the area of ​​the air outlet fan that fits against the side panel of the pack are the same; preferably, the number of air outlet fans is one.

[0045] By combining the pack box with the exhaust fan, the honeycomb airflow structure forms a complete airflow path within the pack box, improving heat dissipation efficiency and achieving rapid and efficient heat dissipation through reasonable space design.

[0046] As a further solution, the pack box is also equipped with a set of pack box handles on the outside, which are used to pull the heat dissipation structure out of the overall structural components, making it convenient to replace parts or carry out regular maintenance during use.

[0047] This utility model also provides a battery module with an air-cooled heat dissipation structure for energy storage, which includes not only the air-cooled heat dissipation structure of the battery pack, but also a plurality of battery packs placed in the receiving area.

[0048] The battery pack consists of several batteries, the shape of which is not limited. Preferably, multiple rectangular batteries are stacked in the receiving area, with the large faces of the rectangular batteries parallel to each other along the Z-direction. The large faces and long side faces of the batteries are parallel to the large faces of the honeycomb flow-guiding structure. The close fit between the batteries and the honeycomb flow-guiding structure increases the heat dissipation contact area and improves heat dissipation efficiency.

[0049] As a further option, the cellular flow guiding structure is detachably connected to the battery pack.

[0050] Through overall design, the airflow channels on the honeycomb airflow structure greatly increase the heat dissipation area of ​​the battery pack. Combined with the air intake components and pack cover, the heat dissipation efficiency of the battery structure is effectively solved; at the same time, the support frame greatly increases the stability of the battery pack inside the pack.

[0051] The features and beneficial effects of this utility model are as follows:

[0052] (1) This utility model uses a honeycomb flow guide structure. Through the turning structure of the flow guide channel, the heat dissipation area inside the battery pack is increased, while also taking into account the stress strength problem caused by the battery pack under long-term high temperature environment. This utility model adopts a reasonable spatial design so that the heat inside the battery pack is evenly dissipated from the four sides parallel to the large surface of the honeycomb flow guide structure through the conduction of the honeycomb flow guide structure. The external air intake component brings the external cold air into the surface of the battery pack, improving the heat dissipation efficiency. On the other hand, the honeycomb flow guide structure adopts a symmetrical arrangement, realizing a reasonable spatial layout and multi-dimensional airflow distribution. At the same time, an air intake component is set above the honeycomb flow guide structure to increase the internal air intake through external air cooling. The air intake component uses an air intake turning method, which also reduces the space occupation and realizes a reasonable spatial design.

[0053] (2) The honeycomb flow guiding structure used in this utility model optimizes the large diameter of the flow guiding channel and the thickness of the honeycomb flow guiding structure, and controls them within a reasonable range, ensuring sufficient material thickness at the connection part to provide basic support for pressure resistance, avoiding structural damage caused by excessively thin connection parts. This design scheme balances lightweight and structural strength requirements, greatly increases the air contact surface area, improves heat dissipation efficiency, and achieves dual optimization of mechanical performance and thermal management effect.

[0054] (3) The present invention sets up a first air intake fan, a second air intake fan, an air outlet fan and a honeycomb air guiding structure to significantly improve heat dissipation efficiency. The reasonable layout in the X and Y directions forms a collaborative air duct, which can increase the total air volume and increase the air pressure, thereby breaking through the heat dissipation limit of a single fan. The dispersed arrangement of multiple fans can expand the heat dissipation coverage area and achieve a more uniform heat distribution. The redundant design can maintain basic heat dissipation capacity when one fan fails, thus improving the reliability of the system.

[0055] (4) The air intake component and pack box of this utility model are equipped with air intake holes and air outlet holes, which maximizes the air intake volume, significantly improves the structural strength and reduces wind resistance, and makes the airflow enter the heat dissipation system more smoothly; the dense honeycomb arrangement can effectively filter turbulent airflow, reduce turbulent noise, and at the same time take into account the dustproof effect and block large particles of foreign objects from entering; the geometrically uniform hole distribution can increase the ventilation efficiency per unit area, and form a more uniform wind pressure distribution with the cooling fan, avoiding local airflow dead corners; in addition, the mechanical stability of the honeycomb structure is better than that of the traditional grid design, and it can withstand higher pressure at the same thickness, taking into account both thinness and durability, and is especially suitable for the needs of home energy storage batteries and small commercial energy storage batteries with high requirements for space and heat dissipation efficiency.

[0056] (5) The honeycomb airflow guiding structure of this utility model is externally supported by a support frame. The support frame ensures the structural strength of the box while also separating a certain heat dissipation distance inside, which facilitates the installation of the internal honeycomb airflow guiding structure and the existence of the outermost exhaust airflow duct of the battery pack. Aluminum is selected as the material for the heat dissipation structure, which has good thermal conductivity, is easy to extrude, die-cast, and is lightweight. Its low cost and corrosion resistance further enhance its practicality. Attached Figure Description

[0057] Figure 1 Schematic diagram of air-cooled heat dissipation structure for energy storage battery packs

[0058] Figure 2 Exploded view of the air-cooled heat dissipation structure of an energy storage battery pack

[0059] Figure 3 Schematic diagram of airflow (heat dissipation direction) of air-cooled heat dissipation structure for energy storage battery packs

[0060] Figure 4 Schematic diagram of the internal battery pack and support frame of the air-cooled heat dissipation structure for energy storage battery packs

[0061] Figure 5 Schematic diagram of the honeycomb airflow guiding structure and its integration with the battery pack, as well as the heat dissipation airflow direction.

[0062] Figure 6 Schematic diagram of a single honeycomb flow guide structure

[0063] Figure 7 Schematic diagram of the air-cooled heat dissipation process of energy storage battery packs

[0064] Figure 8 Schematic diagram of heat dissipation area structure of honeycomb airflow guiding structure

[0065] In the diagram: 100, pack box; 200, pack box handle; 300, storage area; 400, support frame; 500, air intake assembly; 600, battery pack; 700, honeycomb airflow guide structure.

[0066] Pack box lid; 111. Air inlet; 112. Second air intake fan;

[0067] Side panel of pack box; 121. Air vent; 122. Exhaust fan;

[0068] 130. Pack box bottom plate;

[0069] Bottom support frame; 420, side support frame;

[0070] 510. Air inlet duct; 511. Air inlet end; 512. Air outlet end; 520. First air inlet fan;

[0071] 610. Battery;

[0072] 710. Flow guiding channel; 711. First direction flow guiding section; 712. Second direction flow guiding section; 713. Flow guiding and turning section Detailed Implementation

[0073] The following description, in conjunction with the accompanying drawings of the embodiments of the present invention, provides a more comprehensive description of a pack battery pack air-cooled heat dissipation structure of the present invention, and gives specific details of the present invention, but does not limit the scope of the present invention.

[0074] For ease of description, this utility model defines three mutually perpendicular spatial orientations—X, Y, and Z—based on the spatial distribution of the air-cooled heat dissipation structure of the energy storage battery pack.

[0075] In this invention, based on the spatial distribution of the honeycomb flow guiding structure 700, a first direction and a second direction are defined perpendicular to the thickness direction of the honeycomb flow guiding structure 700. When the energy storage battery pack air-cooling structure and the honeycomb flow guiding structure 700 are each described as independent objects, their spatial distributions are independent. When considering the spatial orientation of the honeycomb flow guiding structure 700 in the energy storage battery pack air-cooling structure, the first direction is parallel to the Z direction, and the second direction is perpendicular to the Z direction.

[0076] In this invention, unless otherwise specified, the X direction, Y direction, Z direction, first direction and second direction do not have positive or negative directional characteristics in that direction. For example, the X direction includes +X and -X directions.

[0077] This utility model is achieved through the following technical solution:

[0078] This utility model first provides a wind-cooled heat dissipation structure for energy storage battery packs, including several honeycomb flow guiding structural components 700, wherein the honeycomb flow guiding structural components 700 are provided with flow guiding channels 710 that turn from a first direction to a second direction.

[0079] The cellular airflow guiding structure 700 is provided in space with at least one set of symmetrical groups along the X direction and at least one set of symmetrical groups along the Y direction, which respectively turn air from the same Z direction to opposite X and opposite Y directions.

[0080] An air inlet assembly 500 is provided above the honeycomb air guide structure 700 to direct air from other directions into the air guide channel 710 of the honeycomb air guide structure 700 along the Z direction after being turned.

[0081] In the honeycomb flow guiding structure 700, there are no fewer than two flow guiding channels 710. The extension direction of each flow guiding channel 710 is perpendicular to the thickness direction of the honeycomb flow guiding structure 700, and adjacent flow guiding channels 710 do not intersect.

[0082] As a preferred and feasible method that does not form an intersection, adjacent guide channels 710 are parallel to each other on the first direction guide section 711 and adjacent guide channels 710 are parallel to each other on the second direction guide section 712.

[0083] In the same flow channel 710, the first direction flow section 711 and the second direction flow section 712 are connected by the flow turning section 713. The turning method of the flow turning section 713 is not limited; it can be a circular arc turn or a right angle turn.

[0084] The first directional guide section 711 refers to the section whose extension direction is parallel to the first direction of the guide channel 710. The second directional guide section 712 refers to the section whose extension direction is parallel to the second direction of the guide channel 710. The guide deflection section 713 is used to realize the connection and deflection between the first directional guide section 711 and the second directional guide section 712. The first directional guide section 711, the second directional guide section 712 and the guide deflection section 713 are only used to describe the extension direction of the guide channel 710, and their length and boundary position are not limited.

[0085] In some special cases, the length of the first directional guide section 711, the second directional guide section 712, or the guide and turning section 713 can be 0.

[0086] As one embodiment, when the flow channel 710 extends in a 45° arc shape, it can be considered that the length of the first direction flow section 711 and the second direction flow section 712 is 0, and the length of the flow turning section 713 is the same as the length of the entire flow channel 710.

[0087] As one embodiment, when the flow channel 710 extends at a 90° right angle, it can be considered that the length of the flow-directing segment 713 is 0 and the sum of the lengths of the first direction flow-directing segment 711 and the second direction flow-directing segment 712 is the same as the length of the entire flow channel 710.

[0088] In the honeycomb flow guiding structure 700, the flow guiding channels 710 are evenly distributed in a parallel and staggered manner on any cross-sectional plane in its extension direction. The portion distributed within the thickness range of the honeycomb flow guiding structure 700 forms a complete four-sided closed flow guiding channel 710 inside the honeycomb flow guiding structure 700, and the portion distributed at the thickness edge of the honeycomb flow guiding structure 700 forms an open flow guiding channel 710 on the surface of the structure.

[0089] In the honeycomb flow guiding structure 700, when the large surface dimension of the honeycomb flow guiding structure 700 is nWmm When nWmm, where nW is the length or width of the large surface of the honeycomb flow guiding structure 700, W is the unit length, and n is the number of unit lengths in the length or width direction, the thickness D of the honeycomb flow guiding structure 700 is designed to be 0.29W≤D≤0.50W, and the large diameter d of the flow guiding channel 710 is designed to be 0.16W≤d≤0.17W. In this case, the total number of flow guiding channels 710 in the thickness direction of the honeycomb flow guiding structure 700 is less than three.

[0090] For example, it can be two closed-loop guide channels 710, or it can be one closed-loop guide channel 710 and two open guide channels 710. The sum of the cross-sectional areas of the two open guide channels 710 is greater than, equal to or less than the cross-sectional area of ​​the closed-loop guide channel 710.

[0091] The flow channels 710 are arranged in parallel and staggered manner on any cross section in the extension direction, forming a combination of the outer closed flow channel 710 and the open flow channel 710.

[0092] The air intake assembly 500 includes an air intake duct 510 and an air intake fan 520 integrated inside or at an opening therein. The air intake assembly 500 is disposed on the pack cover 110, and the pack cover 110 is provided with air intake holes 111 that communicate with the air intake duct 510 and the inside of the pack 100 respectively.

[0093] The air inlet 111 is preferably located above the geometric center of the large surface of the pack cover 110.

[0094] A second air intake fan 112 is also provided inside the air intake hole 111 of the pack cover 110.

[0095] As an example, the shape of the air inlet 111 is not limited, but is preferably one or more of the following: circular, square, rectangular, regular pentagon, and regular hexagon, and more preferably a regular hexagonal honeycomb air inlet.

[0096] The air inlet duct 510 is curved and includes an air inlet end 511 and an air outlet end 512. The extension directions of the air inlet end 511 and the air outlet end 512 form an angle with each other, and the angle is not limited.

[0097] As a preferred example, the air outlet 512 extends in a direction parallel to the Z direction, that is, perpendicular to the large surface of the pack cover 110.

[0098] One or more first air intake fans 520 are provided at the air intake end 511 opening of the air intake duct 510; preferably, one first air intake fan 520 is provided.

[0099] As an example, the cross-sectional shape of the air inlet duct 510 is not limited, but is preferably square.

[0100] As an example, the bend in the air inlet duct 510 is preferably 90°, that is, the angle formed by the extension directions of the air inlet end 511 and the air outlet end 512 is 90°.

[0101] The cellular flow-guiding structure 700 is orthogonally arranged in the X and Y directions, dividing the space into several array-distributed accommodating areas 300 for accommodating the battery pack 600 in separate areas.

[0102] The accommodating area 300 is supported by a plurality of support frames 400, including a bottom support frame 410 and a side support frame 420.

[0103] The bottom support frame 410 is arranged according to the distribution of the receiving areas 300, and is located around the bottom of each receiving area 300.

[0104] The side support frame 420 is located at the four corners of the edge of the receiving area 300, and the four side support frames 420 are arranged along the Z direction.

[0105] The material and connection method of the support frame 400 are not limited, but aluminum is preferred.

[0106] As a further embodiment, the outer periphery of the cellular flow guide structure 700 is provided with a pack box 100, which includes the pack box cover 110 and also includes four pack box side plates 120 and one pack box bottom plate 130.

[0107] The pack side panel 120 surrounds the outer periphery of the honeycomb flow guiding structure 700; a pack bottom plate 130 is located below the honeycomb flow guiding structure 700 and is seamlessly connected to the pack side panel 120.

[0108] The pack box side plate 120 is provided with an air outlet 121, which is located at the center of the outer side of each receiving area 300 enclosed by the honeycomb air guiding structure 700 and the pack box side plate 120.

[0109] The shape of the air outlet 121 is not specified, but it is preferably one or more of the following: circular, square, rectangular, regular pentagon, and regular hexagon. More preferably, it is a regular hexagonal honeycomb-shaped air outlet 121.

[0110] As a further embodiment, the pack box 100 is also provided with an exhaust fan 122, which is connected to the inside of the air outlet 121 on the side plate 120 of the pack box. The number of exhaust fans 122 is not limited.

[0111] As a preferred example, the size of the air outlet 121 and the area of ​​the air outlet fan 122 that fits against the side panel 120 of the pack are the same, and the number of air outlet fans 122 is one.

[0112] The pack box 100 is also equipped with a set of pack box handles 200 on the outside.

[0113] This utility model also provides a battery module with an air-cooled heat dissipation structure for energy storage, which includes not only the air-cooled heat dissipation structure for energy storage battery pack, but also a plurality of battery packs 600 placed in the accommodating area 300.

[0114] The battery pack 600 is composed of a number of batteries 610, and the shape of the batteries 610 is not limited.

[0115] The honeycomb flow guide structure 700 is detachably connected to the battery structure.

[0116] Through overall design, the airflow channel 710 on the honeycomb airflow structure 700 greatly increases the heat dissipation area of ​​the battery pack 600. Combined with the air intake component 500 and the pack cover 110, it effectively solves the heat dissipation efficiency problem of the battery structure. At the same time, the support frame 400 greatly increases the stability of the battery pack 600 inside the pack box 100.

[0117] As a specific example of the implementation of the utility model, a detailed case is provided below:

[0118] This utility model describes a wind-cooled heat dissipation structure for energy storage battery packs. This structure is mainly used for heat dissipation of the battery pack, such as... Figure 1-2As shown, an air-cooled heat dissipation structure for an energy storage battery pack includes an air intake component 500 and a honeycomb airflow guiding structure 700, as well as a pack box 100 composed of a pack box cover 110, a pack box side plate 120, and a pack box bottom plate 130, a support frame 400 inside the pack box, and a pack box handle 200 outside the pack box 100.

[0119] like Figure 2-3As shown, the air intake assembly 500 includes an air intake duct 510 and a first air intake fan 520 integrated inside or at its opening. The air intake assembly 500 is positioned above the pack cover 110. In a preferred embodiment, the air intake assembly 500 is positioned at the geometric center above the pack cover 110. The pack cover 110 has air intake holes 111 that communicate with both the air intake duct 510 and the inside of the pack 100. The air intake holes 111 connect the air intake assembly 500 and the honeycomb flow guide structure 700 inside the pack 100, enabling efficient airflow into the honeycomb flow guide structure 700. The air intake holes 111... The position is set at the geometric center of the large surface of the pack cover 110; a second air intake fan 112 is also provided inside the air intake hole 111 on the pack cover 110, which enhances the air intake power by working in conjunction with the air intake component 500, and significantly improves the system's air cooling efficiency; by setting the air intake hole 111 on the pack cover 110, large stones and other particles are prevented from entering the internal structure and blocking the channel, the air intake area is increased and the heat dissipation efficiency is improved. As a preferred embodiment, the shape of the air intake hole 111 is a regular hexagonal honeycomb air intake hole 111. This shape of the air intake hole 111 enhances its structural strength and reduces the damage rate of the structure. The air inlet duct 510 is curved and has a square cross-section. It includes an inlet end 511 and an outlet end 512, with their extension directions forming an angle of 90° (preferred). The outlet end 512 extends parallel to the Z-direction and perpendicular to the large surface of the pack cover 110. The curved design of the air inlet duct 510 significantly increases airflow and heat dissipation efficiency, while also reducing shear stress on internal structural components. A first intake fan 520 is installed at the opening of the inlet end 511 of the air inlet duct 510. This significantly improves the system's air-cooling efficiency and increases the amount of external cool air entering the air-cooling structure. The air intake assembly 500 provides an air intake channel and airflow power for the heat dissipation structure. The connection between the air outlet 512 of the air intake assembly 500 and the pack cover 110 directly introduces air into the honeycomb airflow guiding structure 700. The combination of the two improves heat dissipation efficiency. The air intake assembly 500 ensures that the airflow from the first direction enters the honeycomb airflow guiding structure 700 inside the pack housing 100 evenly and vertically.

[0120] like Figure 2 and Figure 4As shown, as an example, two honeycomb flow guide structures 700 arranged orthogonally along the X direction and one along the Y direction divide the space into six receiving areas 300 for accommodating the battery pack 600. Each receiving area 300 is supported by several support frames 400, including a bottom support frame 410 and side support frames 420. The bottom support frames 410 are arranged according to the distribution of the receiving areas 300, located around the bottom of each receiving area 300, parallel to either the X or Y direction. The side support frames 420 are located at the four corners of the edges of the receiving areas 300, with four side support frames 420 arranged along the Z direction; as a preferred embodiment, the support frames 400 are made of aluminum.

[0121] In this embodiment, as Figure 1-2 As shown, a pack box 100 is provided around the outer periphery of the honeycomb flow guiding structure 700, including the pack box cover 110, four pack box side plates 120, and one pack box bottom plate 130; the pack box side plates 120 surround the outer periphery of the honeycomb flow guiding structure 700; the one pack box bottom plate 130 is located below the honeycomb flow guiding structure 700 and is seamlessly connected to the pack box side plates 120; air outlets 121 are provided on the pack box side plates 120, and are located at the center of the outer side of each receiving area 300 surrounded by the honeycomb flow guiding structure 700 and the pack box side plates 120.

[0122] Four air outlets 121 are distributed along the X direction and six air outlets 121 are distributed along the Y direction, respectively. In this embodiment, the shape of the air outlets 121 is preferably a regular hexagonal honeycomb shape. An air outlet fan 122 is also provided inside the pack box 100. The air outlet fan 122 is connected to the inner side of the air outlets 121 on the pack box side plate 120, and there is one air outlet fan 122. The size of the air outlets 121 and the area where the air outlet fan 122 contacts the pack box side plate 120 are the same. The specific size of the air outlet fan 122 is not set but can be adjusted according to the size of the honeycomb airflow guiding structure 700. Through the design of the pack box 100 and the air outlet fan 122, the honeycomb airflow guiding structure 700 forms a complete airflow path inside the pack box 100, blowing heat out of the pack box 100, thereby improving heat dissipation efficiency and achieving a fast and efficient heat dissipation effect through reasonable space design. Figure 1-2 The pack box 100 shown is equipped with a pack box handle 200, which makes it easy to pull the heat dissipation structure out of the overall structure, making it convenient to replace parts or perform regular maintenance during use.

[0123] like Figure 5-6As shown, in this embodiment, a honeycomb flow guiding structure 700 is provided inside the pack 100, and a flow guiding channel 710 is provided inside, which turns from a first direction to a second direction. In this embodiment, the flow guiding channel 710 extends at a 90° right angle, the length of the flow guiding turning section 713 is 0, and the sum of the lengths of the first direction flow guiding section 711 and the second direction flow guiding section 712 is the same as the length of the entire flow guiding channel. In this embodiment, the flow guiding channels 710 are evenly distributed in a parallel and staggered manner on any cross-sectional plane in their extension direction, forming a portion within the thickness range of the honeycomb flow guiding structure 700 that forms a complete four-sided closed flow guiding channel 710 inside the structure, and a portion distributed at the thickness edge of the honeycomb flow guiding structure 700 that forms an open flow guiding channel 710 on the surface of the structure.

[0124] like Figure 6 As shown, as an example, Figure 6 China B showcased a honeycomb flow guide structure 700, such as Figure 6 As shown in Figure A, the flow guiding channel 710 extends at a 90° right angle. The length of the flow guiding and turning section 713 is 0. The sum of the lengths of the first-direction flow guiding section 711 and the second-direction flow guiding section 712 is the same as the length of the entire flow guiding channel 710. The lengths of the first-direction flow guiding section 711 and the second-direction flow guiding section 712 are the same. The honeycomb flow guiding structure 700 has several flow guiding channels 710 inside and on its surface, including complete four-sided closed flow guiding channels 710 inside and open flow guiding channels 710 on the thickness edge surface of the honeycomb flow guiding structure 700. The three complete four-sided closed flow guiding channels 710 inside the honeycomb flow guiding structure 700 are shown below. Figure 6 In section A, the cross-sections of the two sides of the honeycomb flow guide structure 700 near the large surface are as follows: Figure 6 In the case of C, the section near the middle is 2 as shown. Figure 6 D in the middle.

[0125] In the preferred embodiment of this application, such as Figure 6 and Figure 8 As shown, when the large surface dimension of the honeycomb flow guiding structure 700 is 30 nm... When the length is 30n mm, 30n mm refers to the length or width of the large surface of the 700-cell honeycomb flow-guiding structure. The unit length is approximately 180 mm, based on the large surface dimensions of commonly used 218Ah or 314Ah square-shell cells. With a unit length W of 30 mm and a length of 180 mm, n=6 represents the number of units in the length or width direction of the 700-meter honeycomb flow guide structure. Figure 8 When n is 6, the large surface area of ​​the honeycomb flow guide structure 700 is 180 mm. The 180 mm honeycomb flow guide structure component 700 has a large surface area of ​​32400. mm 2 The flow channel 710 of the honeycomb flow guide structure 700 has a regular hexagonal cross-section with a perimeter of 15 mm (W / 2) and a side length of 2.5 mm. The distance between two parallel sides of the hexagon in the thickness direction is 0.14W, or 4.2 mm. The major diameter d of the flow guide channel 710 is designed to be 0.16W ≤ d ≤ 0.17W, or 4.8~5.1 mm. The thickness D of the honeycomb flow guide structure 700 is designed to be 0.29W ≤ D ≤ 0.50W, or 8.7~15 mm. The thickness D being greater than 8.7 mm satisfies the requirement that, at least in the thickness direction of the honeycomb flow guide structure 700, it is possible to set... Figure 8 The two enclosed flow channels 710 marked 8-1 and 8-2 can also be configured as follows: Figure 8 Markings 8-3 and 8-5 show one closed-loop flow channel 710 and two open-loop flow channels 710, respectively. At this point, the total number of flow channels 710 along the thickness direction of the honeycomb flow-guiding structure 700 is less than three. The design with a thickness of 0.29W≤D≤0.50W satisfies the requirement for the number of honeycomb flow-guiding channels 710 within the thickness of the honeycomb flow-guiding structure 700, provides sufficient heat dissipation space, and thus ensures efficient heat dissipation. Sufficient material thickness at the connection points provides adequate support space, guaranteeing the structural strength. The compressive strength in the X and Y axes can reach 0.8-1.5MPa (8-15Kgf / cm²). 2 The uniform wall thickness between adjacent channels avoids local stress concentration and provides basic support for compression resistance. The above design avoids structural damage caused by excessively thin connection parts, and balances the requirements of lightweight and structural strength while ensuring sufficient heat dissipation space, thereby improving space utilization and heat dissipation efficiency.

[0126] This application also provides a battery module with an air-cooled heat dissipation structure for energy storage, as shown in the figure. Figure 2-4 The battery module includes several battery packs 600, and a honeycomb flow guiding structure 700 is provided between the battery packs 600. The battery packs 600 are located inside the pack box 100, and the honeycomb flow guiding structure 700 is detachably connected to the battery packs 600.

[0127] In this embodiment, as Figure 5As shown, the battery pack 600 consists of several batteries 610, each battery being rectangular in shape and stacked within the receiving area 300. The large faces of the rectangular batteries 610 are placed parallel along the Z-direction, and the large faces and long side faces of the batteries 610 are parallel to the large faces of the honeycomb airflow guiding structure 700. In this embodiment, each battery pack 600 includes three batteries 610. The close fit between the batteries 610 and the honeycomb airflow guiding structure 700 increases the heat dissipation contact area and improves heat dissipation efficiency. The honeycomb airflow guiding structure 700 and the battery pack 600 are installed inside the pack box 100. The airflow channels 710 on the honeycomb airflow guiding structure 700 greatly increase the heat dissipation area of ​​the battery pack 600. The overall design of the air intake assembly 500 and the pack box cover 110 effectively solves the problem of heat dissipation efficiency of the battery structure; at the same time, the support frame 400 greatly increases the stability of the battery pack 600 inside the pack box 100.

[0128] Based on this, the air-cooling process of energy storage battery packs, such as Figure 3 , Figure 7 As shown, during the operation of the battery pack 600, external cold air enters the air intake duct 510 through the first air intake fan 520. Under the guidance of the air intake duct 510, the air intake direction is adjusted, and the air enters the honeycomb air intake structure 700 inside the pack box 100 through the second air intake fan 112 located on the pack box cover 110. The heat generated by the battery pack 600 will be conducted to the honeycomb air intake structure 700 first. Then, the air inside the air intake channel 710 is gradually heated. The continuous external cold air enters along the Z direction through its honeycomb flow channel, carries away the heat inside the flow channel, and then exits along the X or Y direction. Together with the exhaust fans 122 around the pack box 100, the heat generated by the battery during operation is carried out of the pack box 100 along the second direction.

[0129] The present invention successfully obtained a battery pack air-cooled heat dissipation structure and a battery module with an air-cooled heat dissipation structure for energy storage through the preparation method of this utility model. When a honeycomb flow-guiding structure 700 with internal flow-guiding channels 710 is made of aluminum plate, copper plate, or aluminum alloy plate, and each flow-guiding channel 710 is a complete or partial regular hexagon with a perimeter of W / 2, a total of 5 sets of right-angled honeycomb flow-guiding channels 710 are processed on the honeycomb flow-guiding structure 700. Each set of flow-guiding channels 710 includes a flow-guiding channel 710 with three internal holes and two half-open honeycomb flow-guiding channels 710 on two large surfaces, such as... Figure 8 A set of honeycomb heat dissipation holes 8-1, 8-2, 8-3 and two half holes 8-4, 8-5, compared to using only nW nW When heat dissipation is achieved through heat conduction on a 2 mm (n=6) copper or aluminum alloy plate surface, the heat dissipation efficiency is increased by 69.4%, and the heat dissipation design of this air-cooled heat dissipation structure greatly improves the heat dissipation efficiency.

[0130] In summary, this invention combines passive heat dissipation via a honeycomb cooling structure with active cooling via a fan to effectively dissipate heat from household and small commercial energy storage batteries. This ensures that the operating temperature of these batteries remains within a suitable range, while also maintaining stable temperature differences between individual cells within the battery pack. This extends the overall lifespan of the battery module and addresses issues such as insufficient safety redundancy, uneven internal heat dissipation area, low thermal conductivity, complex structure, and high cost. This invention improves the heat dissipation efficiency of the battery pack, resulting in a simple, cost-effective, and safe air-cooled structure and battery module.

[0131] It should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack air-cooled heat dissipation structure, characterized in that, Includes several honeycomb flow-guiding structural components (700); The honeycomb flow guiding structure (700) is provided with a flow guiding channel (710) that turns from the first direction to the second direction; the honeycomb flow guiding structure (700) is provided with at least one set of symmetrical groups along the X direction and at least one set of symmetrical groups along the Y direction in space; An air intake assembly (500) is provided above the honeycomb airflow guiding structure (700).

2. The battery pack air-cooled heat dissipation structure according to claim 1, characterized in that, In the honeycomb flow guiding structure (700), there are no less than two flow guiding channels (710), and the extension direction of each flow guiding channel (710) is perpendicular to the thickness direction of the honeycomb flow guiding structure (700). Adjacent flow guiding channels (710) do not intersect. The adjacent flow channels (710) are parallel to each other on the first direction flow section (711), and the adjacent flow channels (710) are parallel to each other on the second direction flow section (712); In the same flow channel (710), the first direction flow section (711) and the second direction flow section (712) are connected by a flow turning section (713).

3. The battery pack air-cooled heat dissipation structure according to claim 2, characterized in that, When the flow channel (710) extends at a 90° right angle, the length of the flow turning section (713) is 0 and the sum of the lengths of the first direction flow section (711) and the second direction flow section (712) is the same as the length of the entire flow channel (710).

4. The battery pack air-cooled heat dissipation structure according to claim 1, characterized in that, In the honeycomb flow guiding structure (700), the flow guiding channels (710) are evenly distributed in a parallel and staggered manner on any cross-sectional plane in its extension direction. The portion distributed within the thickness range of the honeycomb flow guiding structure (700) forms a complete four-sided closed flow guiding channel (710) inside the honeycomb flow guiding structure (700), and the portion distributed at the thickness edge of the honeycomb flow guiding structure (700) forms an open flow guiding channel (710) on the surface of the honeycomb flow guiding structure (700).

5. The battery pack air-cooled heat dissipation structure according to claim 1, characterized in that, In the honeycomb flow guiding structure (700), when the large surface dimension of the honeycomb flow guiding structure (700) is nW mm × nW mm, where nW is the length or width of the large surface of the honeycomb flow guiding structure (700), W is the unit length, n is the number of unit lengths in the length or width direction, the thickness D of the honeycomb flow guiding structure (700) is designed to be 0.29W≤D≤0.50W, and the large diameter d of the flow guiding channel (710) is designed to be 0.16W≤d≤0.17W.

6. The battery pack air-cooled heat dissipation structure according to claim 1, characterized in that, The air intake assembly (500) includes an air intake duct (510) and a first air intake fan (520) integrated inside or at the opening therein. The air intake assembly (500) is disposed on the pack cover (110), and the pack cover (110) is provided with air intake holes (111) that communicate with the air intake duct (510) and the inside of the pack (100) respectively. The air intake holes (111) are used to connect the air intake assembly (500) and the honeycomb flow guide structure (700) inside the pack (100).

7. The battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, The air inlet (111) is located above the geometric center of the large surface of the pack cover (110).

8. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, A second air intake fan (112) is also provided inside the air intake hole (111) of the pack cover (110).

9. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, The air inlet (111) is one or more of the following shapes: circular, square, rectangular, regular pentagon, and regular hexagon.

10. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, The air inlet (111) is a regular hexagonal honeycomb air inlet (111).

11. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, The air inlet duct (510) is curved and includes an air inlet end (511) and an air outlet end (512). The extension directions of the air inlet end (511) and the air outlet end (512) form an angle with each other.

12. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, One or more first air intake fans (520) are provided at the air intake end (511) opening of the air intake duct (510).

13. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, A first air intake fan (520) is provided at the air intake end (511) opening of the air intake duct (510).

14. A battery pack air-cooled heat dissipation structure according to claim 6, characterized in that, The cross-sectional shape of the air inlet duct (510) is square.

15. A battery pack air-cooled heat dissipation structure according to claim 11, characterized in that, The angle formed by the extension directions of the air inlet (511) and the air outlet (512) is 90°.

16. The battery pack air-cooled heat dissipation structure according to claim 1, characterized in that, The cellular flow guiding structure (700) is orthogonally arranged in the X and Y directions, dividing the space into several array-distributed accommodating areas (300) for accommodating battery packs (600) in separate areas.

17. A battery pack air-cooled heat dissipation structure according to claim 16, characterized in that, The receiving area (300) is supported by a number of support frames (400), including a bottom support frame (410) and a side support frame (420).

18. A battery pack air-cooled heat dissipation structure according to claim 17, characterized in that, The bottom support frame (410) is arranged according to the distribution of the receiving areas (300) and is located around the bottom of each receiving area (300); The side support frame (420) is located at the four corners of the edge of the receiving area (300) at the four corners, and the four side support frames (420) are arranged along the Z direction.

19. A battery pack air-cooled heat dissipation structure according to claim 17, characterized in that, The support frame (400) is made of aluminum.

20. A battery pack air-cooled heat dissipation structure according to claim 1, characterized in that, The outer periphery of the cellular flow guide structure (700) is provided with a pack box (100), including a pack box cover (110), and also includes 4 pack box side plates (120) and 1 pack box bottom plate (130); The pack box side panel (120) surrounds the outer periphery of the honeycomb flow guide structure (700); a pack box bottom plate (130) is located below the honeycomb flow guide structure (700) and is seamlessly connected to the pack box side panel (120).

21. A battery pack air-cooled heat dissipation structure according to claim 20, characterized in that, An air outlet (121) is provided on the side plate (120) of the pack box, and is located at the center of the outer side of each receiving area (300) enclosed by the honeycomb air guiding structure (700) and the side plate (120) of the pack box.

22. The battery pack air-cooled heat dissipation structure according to claim 21, characterized in that, The air outlet (121) is one or more of the following shapes: circular, square, rectangular, regular pentagon, and regular hexagon.

23. The battery pack air-cooled heat dissipation structure according to claim 21, characterized in that, The air outlet (121) is a regular hexagonal honeycomb-shaped air outlet (121).

24. A battery pack air-cooled heat dissipation structure according to claim 20, characterized in that, The pack (100) is also equipped with an exhaust fan (122), which is connected to the inside of the exhaust hole (121) on the side plate (120) of the pack.

25. A battery pack air-cooled heat dissipation structure according to claim 21, characterized in that, The size of the air outlet (121) and the area of ​​the air outlet fan (122) that fits against the side panel (120) of the pack box are the same.

26. A battery pack air-cooled heat dissipation structure according to claim 24, characterized in that, The number of exhaust fans (122) is 1.

27. A battery pack air-cooled heat dissipation structure according to claim 20, characterized in that, The pack box (100) is also provided with a set of pack box handles (200) on the outside.

28. A battery module with an air-cooled heat dissipation structure, characterized in that, It includes a battery pack air-cooled heat dissipation structure as described in any one of claims 1-27, and further includes a plurality of battery packs (600) placed in the receiving area (300).

29. A battery module with a wind-cooled heat dissipation structure according to claim 28, characterized in that, The battery pack (600) is composed of a number of batteries (610).

30. A battery module with a wind-cooled heat dissipation structure according to claim 28, characterized in that, The honeycomb flow guide structure (700) is detachably connected to the battery pack (600).

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