Dual-duct chassis

Abstract

This utility model discloses a dual-airflow chassis, including a chassis body with a first airflow duct and a second airflow duct inside, and a first air inlet, a second air inlet, and an air outlet. The first airflow duct forms a first air inlet and an air outlet, and the second airflow duct forms a second air inlet and an air outlet. The first airflow duct is located below the second airflow duct. Multiple battery cells are spaced apart inside the chassis and are located along the airflow paths of the first and second airflow ducts, so that the first and second airflow ducts are used to dissipate heat from the multiple battery cells. An air supply assembly is located at the air outlet to drive outside air from the first and second air inlets to the air outlet. A partition assembly is located inside the chassis and includes a first partition and a second partition that intersect. The first partition and the inner wall of the chassis define the first airflow duct, and the second partition and the inner wall of the chassis define the second airflow duct. This utility model improves the zoned heat dissipation of battery cells in different areas, as well as the heat dissipation efficiency and temperature uniformity.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a dual-airflow chassis. Background Technology

[0002] Existing chassis cooling structures typically employ a single-duct or integrated air intake design. This involves a single, unified air intake on one side of the chassis, with airflow guided through a single duct. One or more fans draw air in through the intake, pass over heat-generating components (such as battery cells), and exhaust it through the exhaust vent. This structure often places all battery cells on the same airflow path, causing the cooling air to heat up as it passes the front cells and cool less as it reaches the rear cells, resulting in a significant temperature gradient and poor heat dissipation uniformity. Utility Model Content

[0003] The main purpose of this invention is to propose a dual-airflow chassis, which aims to improve the zoned heat dissipation, heat dissipation efficiency, and temperature uniformity of battery cells in different areas.

[0004] To achieve the above objectives, this utility model proposes a dual-airflow chassis, comprising:

[0005] The housing has a first air duct and a second air duct, and has a first air inlet, a second air inlet and an air outlet. The first air duct has the first air inlet and the air outlet, and the second air duct has the second air inlet and the air outlet. The first air duct is located below the second air duct.

[0006] Multiple battery cells are spaced apart inside the housing, and the multiple battery cells are located on the airflow paths of the first air duct and the second air duct, so that the first air duct and the second air duct are used to dissipate heat from the multiple battery cells.

[0007] An air supply assembly is provided at the air outlet and is used to drive outside air to be delivered from the first air inlet and the second air inlet through the air outlet.

[0008] A partition assembly, disposed within the housing, includes a first partition and a second partition arranged intersecting each other. The first partition and the inner wall of the housing define a first air duct, and the second partition and the inner wall of the housing define a second air duct.

[0009] In one embodiment, the housing has a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall, a fourth sidewall, and a top plate disposed between the first sidewall and the second sidewall;

[0010] The first air inlet includes a first air outlet and a second air outlet. The first air outlet is located on one side of the first sidewall and close to the third sidewall. The second air outlet is located on one side of the first sidewall and close to the fourth sidewall. The second air inlet is located on one side of the first sidewall and close to the top plate, and the second air inlet is located between the first air outlet and the second air outlet. The air outlet is located on the second sidewall.

[0011] In one embodiment, the first partition includes a first partition member and a second partition member. The third sidewall is disposed opposite to the first partition member and at a preset distance to form a first flow channel. The first flow channel connects the first air outlet and the air outlet. The fourth sidewall is disposed opposite to the second partition member and at a preset distance to form a second flow channel. The second flow channel connects the second air outlet and the air outlet. The first sidewall is disposed opposite to the second partition member and at a preset distance to form a third flow channel. The third flow channel connects the second air inlet and the air outlet.

[0012] In one embodiment, the first partition member is provided with a first notch, which extends along the length of the third sidewall. The first notch communicates with the first flow channel and the air outlet. A flow gap is provided between the plurality of battery cells. The first notch is adapted to the side of the battery cell so that air flowing through the first flow channel is sent out through the air outlet through the first notch and the flow gap for heat dissipation of the plurality of battery cells.

[0013] In one embodiment, the second partition member is provided with a second notch, which extends along the length of the fourth sidewall. The second notch communicates with the second flow channel and the air outlet. The second notch is adapted to the side of the battery cell so that air flowing through the second flow channel is sent out through the air outlet through the second notch and the flow gap for heat dissipation of the multiple battery cells.

[0014] In one embodiment, the second air inlet includes a third air outlet, the second partition is located below the third air outlet along the height direction, and the third air outlet forms the third air guide channel between the second partition and the third air outlet.

[0015] In one embodiment, the second air inlet includes a fourth air outlet, which is a preset distance from the third air outlet. The second partition is located below the third air outlet along the height direction, and the second partition, the third air outlet, and the fourth air outlet form the third air guide channel.

[0016] In one embodiment, the second partition is provided with a third notch and a fourth notch, which extend along the width direction of the first sidewall. The third notch and the fourth notch are respectively located below the third air vent and the fourth air vent. The third notch and the fourth notch are both connected to the third flow channel. The third notch and the fourth notch are both adapted to the side of the battery cell to dissipate heat from the side of the battery cell.

[0017] In one embodiment, the air supply assembly includes a first fan and a second fan, which are installed at the air outlet and are spaced apart along the height direction of the second sidewall.

[0018] In one embodiment, the first sidewall is provided with a plurality of through holes, and the first air inlet and the second air inlet are each composed of a plurality of the through holes, which are arranged in an array.

[0019] This utility model discloses a dual-airflow chassis, which achieves zoned heat dissipation and efficient thermal management of battery cells in different areas by setting up a dual-airflow structure with upper and lower layers and independent air supply inside the chassis. The chassis includes a chassis body, multiple battery cells, air supply components, and partition components. The chassis body has a first airflow duct and a second airflow duct, and has a first air inlet, a second air inlet, and a common air outlet. The first airflow duct is located below the second airflow duct, forming a layered airflow layout. The first airflow duct introduces cooling air through the first air inlet and connects with the air outlet to form the lower cooling airflow path; the second airflow duct introduces air through the second air inlet and also converges to the same air outlet to form an upper independent airflow duct. The two airflow ducts are independent in the air intake area, but share an air outlet at the exhaust end, which helps to simplify the fan layout and improve space utilization. Multiple battery cells are arranged at intervals inside the chassis and distributed in the airflow paths of the first and second airflow ducts. This design allows the cells in the upper and lower regions to receive differentiated or coordinated air cooling based on their heat generation, location, or operating characteristics, improving overall temperature uniformity. The air supply assembly, installed at the air outlet, generates negative pressure to drive external air into the enclosure through the first and second air inlets. The air flows through its corresponding ducts, carrying away heat as it passes through or flows over the cell surface, before being uniformly discharged from the outlet, forming a stable forced convection circulation. The baffle assembly, located inside the enclosure, consists of an intersecting first and second baffle. These two baffles are interconnected or partially overlapped, together enclosing and defining independent first and second air ducts with the inner wall of the enclosure. The first baffle primarily forms the boundary of the lower first air duct, guiding airflow along a specific path. The second baffle forms the structural basis of the upper second air duct, ensuring that the upper airflow does not mix with the lower airflow, achieving stratified airflow management and guidance. This dual-airflow chassis achieves zoned heat dissipation, improved heat dissipation efficiency, and temperature uniformity for multiple battery cells within the chassis through a layered airflow design, combined with an independent air intake and shared exhaust airflow organization mode, and the guidance of airflow by the partition assembly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a structure of an embodiment of the dual-airflow chassis provided by this utility model;

[0022] Figure 2A schematic diagram of another embodiment of the dual-airflow chassis provided by this utility model;

[0023] Figure 3 A schematic diagram of another embodiment of the dual-airflow chassis provided by this utility model;

[0024] Figure 4 A schematic diagram of another embodiment of the dual-airflow chassis provided by this utility model;

[0025] Figure 5 This is a partial structural schematic diagram of an embodiment of the dual-airflow chassis provided by this utility model.

[0026] Explanation of icon numbers:

[0027] 10. Housing; 11. First air inlet; 111. First air outlet; 112. Second air outlet; 12. Second air inlet; 121. Third air outlet; 122. Fourth air outlet; 13. Air outlet; 14. First side wall; 15. Second side wall; 16. Third side wall; 17. Fourth side wall; 18. Base plate; 20. Battery cell; 30. Air supply assembly; 31. First fan; 32. Second fan; 40. Partition assembly; 41. First partition; 411. First partition component; 412. Second partition component; 413. First notch; 414. Second notch; 42. Second partition; 43. Third notch; 44. Fourth notch.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model proposes a dual-airflow chassis.

[0033] Reference Figures 1-5 In this embodiment of the utility model, a dual-air duct chassis includes:

[0034] The housing 10 is provided with a first air duct and a second air duct, and has a first air inlet 11, a second air inlet 12 and an air outlet 13. The first air duct has the first air inlet 11 and the air outlet 13, and the second air duct has the second air inlet 12 and the air outlet 13. The first air duct is located below the second air duct.

[0035] Multiple battery cells 20 are spaced apart inside the housing 10, and the multiple battery cells 20 are located on the airflow paths of the first air duct and the second air duct, so that the first air duct and the second air duct are used to dissipate heat from the multiple battery cells 20.

[0036] An air supply assembly 30 is provided at the air outlet 13 and is used to drive outside air to be sent out from the first air inlet 11 and the second air inlet 12 through the air outlet 13.

[0037] The partition assembly 40 is disposed inside the housing 10 and includes a first partition 41 and a second partition 42 that are intersected. The first partition 41 and the inner wall of the housing 10 define the first air duct, and the second partition 42 and the inner wall of the housing 10 define the second air duct.

[0038] This utility model discloses a dual-airflow chassis, mainly used for thermal management of high-power-density or heat-concentrated electronic equipment (such as energy storage battery cabinets, server chassis, or power electronic equipment cabinets). The chassis includes a housing 10, multiple battery cells 20, an air supply assembly 30, and a partition assembly 40. The housing 10 has a first airflow duct and a second airflow duct distributed vertically, with the first airflow duct located below the second airflow duct, corresponding to battery cells at different heights. Since hot air rises, the lower layer typically has a lower temperature, while the upper layer is prone to heat accumulation. Layering the airflow ducts allows for targeted heat dissipation of the upper layer, avoiding uneven temperature distribution caused by "hot at the top and cold at the bottom." Each airflow duct independently guides airflow, ensuring a stable airflow for each layer of battery cells. With independent first air inlets 11 and second air inlets 12, the two airflow ducts ultimately converge at the same air outlet 13. This forms a centralized negative pressure exhaust, which is beneficial for unified heat dissipation, simplified structure, and reduced noise. Multiple battery cells 20 are spaced apart inside the housing 10 and located on the airflow paths of two air ducts to ensure that airflow can directly pass over the surface of the battery cells for forced convection heat dissipation. The air supply assembly 20 is installed at the air outlet 13. It drives external air to enter from the first air inlet 11 and the second air inlet 12 through negative pressure suction. The air flows through the first air duct and the second air duct in sequence, absorbs the heat from the battery cells, and is then discharged from the air outlet 13. The partition assembly 40 is composed of a first partition 41 and a second partition 42 that intersect. The first partition 41 and the inner wall of the housing 10 form the first air duct, and the second partition 42 and the inner wall of the housing 10 form the second air duct, thus achieving physical separation and structural support of the airflow paths. The dual-layer airflow structure enables zoned heat dissipation for different areas of the battery cells 20, effectively mitigating the problem of excessively high temperatures at the top caused by rising hot air and improving the uniformity of the overall temperature field. Dual air inlets, combined with a shared air outlet 13 and a centralized air supply assembly 20, increase airflow volume, optimize airflow organization, and improve heat dissipation efficiency and air utilization. This achieves zoned heat dissipation for multiple battery cells within the enclosure, enhancing heat dissipation efficiency and temperature uniformity. Furthermore, the airflow ducts are constructed with internal partitions, resulting in a compact structure, high space utilization, and a certain degree of airflow redundancy. Even if local airflow is obstructed, basic heat dissipation functions can still be maintained, enhancing the system's reliability and safety. In addition, this design is particularly suitable for large-capacity battery systems or high-power electronic devices with stringent thermal management requirements, offering significant advantages in ensuring stable equipment operation, extending service life, and preventing thermal runaway.

[0039] Reference Figures 1-5 In this embodiment of the present invention, the box body 10 has a first side wall 14 and a second side wall 15 disposed opposite to each other, and a third side wall 16, a fourth side wall 17 and a top plate 18 disposed between the first side wall 14 and the second side wall 15.

[0040] The first air inlet 11 includes a first air vent 111 and a second air vent 112. The first air vent 111 is located on one side of the first side wall 14 and close to the third side wall 16. The second air vent 112 is located on one side of the first side wall 14 and close to the fourth side wall 17. The second air inlet 12 is located on one side of the first side wall 14 and close to the top plate 18, and the second air inlet 12 is located between the first air vent 111 and the second air vent 112. The air outlet is located at the second side wall 15.

[0041] The enclosure 10 has a first sidewall 14 and a second sidewall 15 arranged opposite to each other, and a third sidewall 16, a fourth sidewall 17, and a top plate 18 located between them, forming a closed or semi-closed three-dimensional space. Multiple air inlets 11 are provided on the first sidewall 14, specifically including two first air inlets 111 and a second air inlet 112 for a first air duct, respectively located on the first sidewall 14 near the third sidewall 16 and the fourth sidewall 17, i.e., distributed at the left and right ends of the first sidewall 14. Simultaneously, a second air inlet 12 for a second air duct is provided on the side of the first sidewall 14 near the top plate 18, while the air outlets 12 are uniformly located on the second sidewall 15 opposite to the first sidewall 14. The interior features two independent air ducts, one vertically and one vertically. The first air duct, located at the bottom, is enclosed by a first partition 41 and the inner wall of the housing 20, and draws air from both sides of the first side wall 14 through a first air inlet 111 and a second air inlet 112. The second air duct, located at the top, is enclosed by a second partition 15 and the inner wall of the housing 20, and draws air from the upper middle area of ​​the first side wall 14 through a second air inlet 12. The airflow from both air ducts is ultimately guided and converges into a common air outlet 12 located on the second side wall 15. Multiple battery cells 20 are spaced apart within the housing 10 and distributed along the airflow paths of the first and second air ducts, allowing cooling air to directly contact or approach the surface of the battery cells as it flows through the air ducts, achieving efficient forced air cooling. An air supply assembly (including but not limited to a fan or blower) is installed at the air outlet 12 of the second side wall 15. Through negative pressure suction, external air is driven to enter through multiple air inlets 11 on the first side wall 14, entering the upper and lower air ducts respectively. After absorbing heat from the battery cell 20, the air is uniformly discharged from the air outlet 12 of the second side wall 15. The first air inlet 111 and the second air inlet 112 are located at opposite ends of the first side wall 14, allowing air to enter the first air duct from both sides. This effectively avoids airflow deviation or insufficient airflow at the end caused by unilateral air intake, improving the uniformity of heat dissipation for the lower battery cell 20. The second air inlet 12 is located in the middle of the upper part of the first side wall 14, near the top plate 18, facilitating a direct air intake path for the upper second air duct. This is particularly suitable for the natural rise of hot air, enhancing the cooling capacity for areas prone to heat accumulation in the upper layer. The air outlet 12 is located on the second side wall 15 on the opposite side, forming a transverse airflow organization pattern with multiple air intakes on one side and concentrated exhaust on the opposite side. This helps to form a stable and smooth airflow channel, reduce eddies and dead zones, and improve overall ventilation efficiency.

[0042] Reference Figures 1-5In this embodiment of the present invention, the first partition 41 includes a first partition member 411 and a second partition member 412. The third sidewall 16 is disposed opposite to the first partition member 411 and is separated by a preset distance to form a first flow channel. The first flow channel connects the first air outlet 111 and the air outlet 13. The fourth sidewall 17 is disposed opposite to the second partition member 412 and is separated by a preset distance to form a second flow channel. The second flow channel connects the second air outlet 112 and the air outlet 13. The first sidewall 14 is disposed opposite to the second partition 42 and is separated by a preset distance to form a third flow channel. The third flow channel connects the second air inlet 12 and the air outlet 13.

[0043] The first partition 41 is not a single, integral structure, but rather consists of two independent first partition components 411 and 412, respectively located in the lower region inside the housing 10. A predetermined distance is maintained between the third sidewall 16 and the first partition component 411, forming a narrow, elongated first airflow channel. One end of this channel connects to the first air vent 111 located on the first sidewall 14 and near the third sidewall, while the other end extends to the air outlet 13 located on the second sidewall. Similarly, a predetermined distance is maintained between the fourth sidewall 17 and the second partition component 412, forming a second airflow channel. This channel connects the second air vent 112 on the first sidewall 14 near the fourth sidewall 17 with the air outlet 13 on the second sidewall. These two airflow channels together constitute the main body of the first air duct, used for heat dissipation of the battery cells in the lower region. Because air enters simultaneously from both sides of the enclosure (near the third side wall 16 and the fourth side wall 17) and flows laterally along the channel between the side wall and the partition to the air outlet on the opposite side, this dual-sided air intake and lateral airflow path effectively avoids the airflow attenuation problem caused by traditional single-sided air intake, significantly improving the temperature uniformity of the lower battery cells along the width of the enclosure. Furthermore, the second partition 42 is located in the upper area, with a pre-set distance between it and the first side wall 14, forming a third airflow channel. This channel connects the second air inlet 12, located above the first side wall 14 and near the top plate 18, with the air outlet 13 of the second side wall, forming an independent second air duct for heat dissipation of the upper battery cells. Since hot air tends to rise, the upper area is more prone to localized overheating; therefore, by separately setting up an air inlet channel in the upper part, the cooling capacity of the upper battery cells can be specifically enhanced. An air supply assembly 30 (such as a fan) is installed at the air outlet 12 of the second side wall 15 to generate negative pressure, driving external air to enter simultaneously from the three air inlets (first air inlet 111, second air inlet 112 and second air inlet 12) of the first side wall 14, and flow to the air outlet through the first guide channel, the second guide channel and the third guide channel respectively. During this process, the airflow passes through or flows through multiple battery cells 20 distributed in each air duct, carrying away the heat generated by their operation.

[0044] Reference Figures 1-5 In this embodiment of the present invention, the first partition 411 is provided with a first notch 413, which extends along the length of the third sidewall 16. The first notch 413 communicates with the first flow channel and the air outlet 13. A flow gap is provided between the plurality of battery cells 20. The first notch 413 is adapted to the side of the battery cell so that the air flowing through the first flow channel is sent out through the first notch 413 and the flow gap from the air outlet 13 for heat dissipation of the plurality of battery cells 20.

[0045] In this design, the first partition 411 is not a completely enclosed baffle; it has a first notch 413. This first notch 413 extends along the length of the third sidewall 16, forming a long strip or slit-like structure that penetrates or partially covers the corresponding area of ​​the cell array. This design ensures that the notch forms a continuous airflow outlet channel along the entire length of the cell array, guaranteeing that air from the first guide channel can be released uniformly along its entire length. Simultaneously, the first notch 413 is spatially and geometrically matched to the flow gaps between the multiple cells 20, adapting to the side of the cell. Its height, width, and position correspond to the side profile of the cell module after installation, ensuring that when the cells are installed in the housing, the first notch 413 faces the gaps between the cells, forming a continuous, low-resistance, directional transverse airflow path from the first guide channel to the first notch 413, then to the flow gaps, and finally to the air outlet 12. Meanwhile, multiple battery cells 20 are arranged in an array or side-by-side within the housing 20, with flow gaps between them to allow air to pass through. These flow gaps constitute the main path for airflow through the battery cell group, achieving convective heat dissipation. During operation, the air supply assembly 30 is installed at the air outlet 12 of the second side wall 15, generating a negative pressure suction effect, driving external cooling air from the first air outlet 111 of the first side wall 14 into the first guide channel. The airflow flows laterally along the channel between the third side wall 16 and the first partition 411. When it reaches the end near the air outlet 12, it is no longer blocked by the partition, but is evenly introduced into the battery cell area through the full-length first notch 413, and is forced to pass through the flow gaps between the battery cells, directly exchanging heat with the side of the battery cells, carrying away the heat generated during operation, and finally being discharged uniformly from the air outlet 12 of the second side wall 15. Since the first notch 413 extends along the length of the third sidewall 16, cooling air can enter the flow gap synchronously along the entire length of the cell array 20, avoiding the problem of large air volume at the front end and small air volume at the end caused by traditional single-point or local openings, and greatly improving the uniformity of heat dissipation.

[0046] Reference Figures 1-5In this embodiment of the present invention, the second partition 412 is provided with a second notch 414, which extends along the length of the fourth sidewall 17. The second notch 414 communicates with the second flow channel and the air outlet 13. The second notch 414 is adapted to the side of the battery cell so that the air flowing through the second flow channel is sent out through the air outlet 13 through the second notch 414 and the flow gap for heat dissipation of the multiple battery cells 20.

[0047] To ensure that the cooling air flowing through the second airflow channel can effectively enter the heat dissipation area of ​​the battery cells, a second notch 414 is provided on the second partition 412. This notch extends along the length of the fourth sidewall 17, and is in the form of a long strip or slit, penetrating or covering the corresponding area of ​​the battery cell array on that side. This design ensures that the air from the second airflow channel can be released continuously and evenly throughout the entire length of the battery cell assembly, avoiding problems such as localized airflow concentration or insufficient airflow at the end. At the same time, the second notch 414 is spatially and geometrically matched to the flow gaps between the multiple battery cells 20, that is, it is adapted to the side of the battery cell, meaning that its height, width, and position correspond to the side profile of the battery cell module after installation. When the battery cells are installed in the housing, the second notch is exactly aligned with the gaps between the battery cells, forming a continuous, low-resistance, laterally penetrating airflow path that flows from the second airflow channel to the second notch 414, then to the flow gaps between the battery cells 20, and finally to the air outlet 13. During operation, the air supply assembly 20 is installed at the air outlet 12 of the second side wall 15, generating negative pressure and driving external cooling air to enter the second guide channel from the second air outlet 112 of the first side wall 14. The airflow flows laterally along the channel between the fourth side wall 16 and the second partition 412. When it reaches the end near the air outlet 12, it enters the area of ​​the battery cell 20 through the full-length second notch 414 and is forced to pass through the flow gap between the battery cells 20, where it undergoes sufficient convective heat exchange with the side of the battery cell 20, carrying away the heat generated during operation, and finally being discharged uniformly from the air outlet 12 of the second side wall 15.

[0048] Reference Figures 1-5 In this embodiment of the present invention, the second air inlet 12 includes a third air outlet 121, and the second partition 42 is located below the third air outlet 121 along the height direction, forming the third air guide channel between the second partition 42 and the third air outlet 121.

[0049] The second partition 42 is located below the third air vent 121 along the height direction of the housing 10. That is, the third air vent 121 is located at a higher position on the first side wall 14, while the second partition 42 is horizontally or inclined at a certain distance directly below it, with a pre-set gap between them. This gap forms an airflow channel connecting the third air vent 121 and the air outlet 13, i.e., the third guide channel. The upper part of this channel is either the upper space of the housing or directly leads to the air outlet, while the lower part is the bottom surface of the air duct formed by the second partition 42. When the air supply assembly 20 is activated at the air outlet 13 located on the second side wall 15 and generates negative pressure, external cooling air is drawn into the housing from the third air vent 121 on the first side wall. Because the second partition 42 is located below this air vent, the airflow does not directly impact downwards or diffuse turbulently after entering; instead, it is naturally guided to the gap area between the second partition 42 and the third air vent 121, i.e., the third guide channel. The airflow is rectified and guided in this channel, then flows towards the air outlet 13, passing through multiple battery cells 20 in the upper region. Forced convection cooling is achieved through the flow gaps between the battery cells 20, and finally, the hot air is uniformly discharged from the air outlet 12. Simultaneously, the second baffle 42 itself acts as a lateral barrier, hindering the free expansion of airflow in the lower region, causing the airflow to tend to flow towards the upper space where resistance is lower. Under the negative pressure suction effect created by the air supply assembly 30 at the air outlet 12, the upper part of the housing 10 becomes the main airflow convergence area, further strengthening the upward flow trend. Therefore, the obstructing effect of the second baffle 42 effectively guides and concentrates the airflow, forcing the cooling air, after passing through the gap and exchanging heat with the battery cells, to converge more towards the air outlet through the space above the battery cells, thus forming an airflow organization pattern dominated by upper exhaust. Positioning the second partition 42 below the third air vent 121 creates a clear third airflow channel. This effectively controls the direction and path of the upper airflow, preventing it from rising directly and dissipating or forming vortices, ensuring that cooling air effectively participates in the heat dissipation process of the upper battery cells. Because hot air naturally rises, the upper part of the chassis is more prone to heat accumulation, becoming a weak area for heat dissipation. By setting an air inlet (third air vent 121) near the top and using a flow-guiding structure, a source of cooling can be provided for the upper battery cells, enhancing the cooling capacity of this area and preventing localized overheating.

[0050] Reference Figures 1-5 In this embodiment of the present invention, the second air inlet 12 includes a fourth air outlet 122, the fourth air outlet 122 being a preset distance from the third air outlet 121, the second partition 42 being located below the third air outlet 121 along the height direction, and the second partition 42 forming the third air guide channel between the third air outlet 121 and the fourth air outlet 122.

[0051] Specifically, the second air inlet 12 of the chassis is no longer a single air inlet, but consists of two independent air inlets: a third air inlet 121 and a fourth air inlet 122. Both air inlets are located on the first side wall 14 of the chassis, near the upper area of ​​the first top plate 18, but are spaced a predetermined distance apart. This distance is typically designed based on the length of the battery cell array, airflow distribution requirements, and aerodynamic characteristics to achieve reasonable spatial coverage. In this embodiment, the third air inlet 121 may be located near the end of the third side wall 16, and the fourth air inlet 122 may be located near the end of the fourth side wall 17, forming a symmetrical or segmented air inlet layout. Inside the chassis 20, a second partition 42 is provided, which forms the bottom or lateral boundary of the second air duct. The second partition 42 is located below the third air inlet 121 and also below the fourth air inlet 122 along the height direction of the chassis (because the two air inlets are at similar heights), meaning the entire second partition 42 is arranged at a certain height below the two upper air inlets. Thus, the space between the second partition 42 and the upper third air inlet 121 and fourth air inlet 122 together form a continuous airflow channel, namely the third guide channel. When the air supply assembly 20 operates at the air outlet 13 of the second side wall 15 and generates negative pressure, external cooling air will be simultaneously drawn into the housing from the third air inlet 121 and fourth air inlet 122 on the first side wall. Since the second partition 42 is located below these two air inlets, the incoming airflow will not directly impact downwards or diffuse disorderly, but will be guided to the space between the second partition 42 and the two air inlets, namely the third guide channel. This channel will merge, rectify, and guide the incoming airflow from the left and right (or front and back) directions, forming a horizontally penetrating or evenly distributed airflow band. Subsequently, the airflow flows along the guide channel towards the air outlet 13, and in the process, it flows through multiple battery cells 20 located in the upper area. Forced convection heat dissipation is achieved through the flow gaps between the battery cells 20, and finally the hot air is uniformly discharged from the air outlet 12. Compared to a single air inlet, the use of two spaced-apart air inlets, a third inlet 121 and a fourth inlet 122, avoids the problem of large near-end airflow and small far-end airflow caused by single-point airflow. This allows cooling air to enter the upper area simultaneously from multiple locations, significantly improving the uniformity of airflow distribution of the upper battery cells 20 along the width or length of the chassis 10. The third airflow channel is no longer composed of just one air inlet and a partition, but integrates the space between the two air inlets and the second partition, forming a wider and more continuous airflow area. This design helps reduce local eddies, airflow deflection, or dead zones, improving the stability and consistency of airflow organization. Since hot air naturally rises, a high-temperature zone easily forms in the upper part of the chassis. By setting up dual air inlets in the top area, combined with a wide-area airflow structure, sufficient and evenly distributed cooling airflow can be provided to the upper battery cells 20, effectively reducing local temperature and preventing the risk of thermal runaway.

[0052] Reference Figures 1-5In this embodiment of the present invention, the second partition 42 is provided with a third notch 43 and a fourth notch 44. The third notch 43 and the fourth notch 44 extend along the width direction of the first sidewall 14. The third notch 43 and the fourth notch 44 are respectively located below the third air vent 121 and the fourth air vent 122. The third notch 43 and the fourth notch 44 are both connected to the third flow channel. The third notch 43 and the fourth notch 44 are both adapted to the side of the battery cell to dissipate heat from the side of the battery cell 20.

[0053] Specifically, the second partition 42 is provided with a third notch 43 and a fourth notch 44. These two notches extend along the width direction of the first sidewall 14 and are located directly below the third air vent 121 and the fourth air vent 122, respectively. Both are connected to the upper third guide channel, allowing cooling air entering from the third air vent 121 and the fourth air vent 122 to be discharged downwards or laterally through the guide channel via the third notch 43 and the fourth notch 44. The shape, size, and position of the notches are adapted to the exposed side profiles of the multiple battery cells, ensuring that the airflow can evenly cover the side areas of the battery cells. After the cooling air flows out from the notches, it does not force its way through the gaps between the battery cells, but instead blows laterally across the outer surface of the battery cells, dissipating heat through convection heat exchange, thus achieving surface air cooling of the battery cells.

[0054] Reference Figures 1-5 In this embodiment of the present invention, the air supply component 30 includes a first fan 31 and a second fan 32. The first fan 31 and the second fan 32 are installed at the air outlet 13 and are spaced apart along the height direction of the second side wall 15.

[0055] The chassis is equipped with an air outlet 13 located on the second side wall 15 opposite to the air inlet side (first side wall 14), serving as a unified outlet for all cooling airflow. An air supply assembly 30 is installed at this air outlet, which no longer uses a single fan but consists of a first fan 31 and a second fan 32. Both fans are installed in the air outlet 13 area and are spaced apart along the height of the second side wall 15, i.e., one is located at a higher position and the other at a lower position, forming a vertical distribution. In this embodiment, the first fan 31 can be located in the upper area of ​​the air outlet 12, corresponding to the airflow path of the upper second air duct; the second fan 32 is located in the lower area, corresponding to the airflow path of the lower first air duct. During operation, the first fan 31 and the second fan 32 operate simultaneously, generating a negative pressure suction effect, jointly driving external cooling air into the chassis 20 from multiple air inlets (first air inlet 111, second air inlet 112, third air inlet 121, and fourth air inlet 122) on the first side wall. The incoming air flows through the first air duct (lower layer) and the second air duct (upper layer), passing through the flow gap between the battery cells 20 for forced convection cooling. Finally, the hot air is uniformly discharged from the air outlet 13 by the two fans. By setting the two fans at intervals along the height direction, each fan can be closer to the airflow convergence area of ​​its corresponding air duct, thereby more effectively drawing air from that air duct. This avoids the problem of insufficient upper-layer suction or excessive lower-layer airflow caused by the misalignment of a single fan, achieving balanced drive and matched air supply for the upper and lower air ducts.

[0056] Reference Figures 1-5 In this embodiment of the present invention, the first sidewall 14 is provided with a plurality of through holes, and the first air inlet 11 and the second air inlet 12 are respectively composed of a plurality of the through holes, which are arranged in an array.

[0057] Specifically, the first sidewall 14 of the chassis serves as the main air intake surface, and it has multiple through holes. These through holes are not randomly arranged, but are distributed in an array according to certain rules (including but not limited to rectangular arrays, staggered arrangements, etc.), forming a dense and orderly area of ​​openings. The first air inlet 11 and the second air inlet 12 are no longer single large openings, but are each composed of multiple through holes, that is, each air inlet is an area composed of several through holes. The through holes located on the lower part of the first sidewall near the third and fourth sidewalls constitute the first air inlet 11, which is used for air intake of the lower first air duct, while the through holes located on the upper part near the first top plate constitute the second air inlet 12, which is used for air intake of the upper second air duct. Compared with a single or a few large openings, the array distribution of multiple through holes allows cooling air to enter from more points simultaneously, effectively avoiding local airflow concentration or jet effects, achieving a more uniform airflow distribution, and ensuring that each air duct and battery cell area receives a balanced cooling effect. With the same total air volume, multi-hole air inlet can disperse airflow to more outlets, significantly reduce the wind speed at a single through-hole, reduce turbulence, eddies and noise caused by high-speed air intake, and improve the stability and smoothness of airflow organization.

[0058] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A dual-airflow chassis, characterized in that, include: The housing has a first air duct and a second air duct, and has a first air inlet, a second air inlet and an air outlet. The first air duct has the first air inlet and the air outlet, and the second air duct has the second air inlet and the air outlet. The first air duct is located below the second air duct. Multiple battery cells are spaced apart inside the housing, and the multiple battery cells are located on the airflow paths of the first air duct and the second air duct, so that the first air duct and the second air duct are used to dissipate heat from the multiple battery cells. An air supply assembly is provided at the air outlet and is used to drive outside air to be delivered from the first air inlet and the second air inlet through the air outlet. A partition assembly, disposed within the housing, includes a first partition and a second partition arranged intersecting each other. The first partition and the inner wall of the housing define a first air duct, and the second partition and the inner wall of the housing define a second air duct.

2. The dual-airflow chassis as described in claim 1, characterized in that, The enclosure has a first side wall and a second side wall that are disposed opposite to each other, and a third side wall, a fourth side wall and a top plate disposed between the first side wall and the second side wall; The first air inlet includes a first air outlet and a second air outlet. The first air outlet is located on one side of the first sidewall and close to the third sidewall. The second air outlet is located on one side of the first sidewall and close to the fourth sidewall. The second air inlet is located on one side of the first sidewall and close to the top plate, and the second air inlet is located between the first air outlet and the second air outlet. The air outlet is located on the second sidewall.

3. The dual-airflow chassis as described in claim 2, characterized in that, The first partition includes a first partition member and a second partition member. The third sidewall is disposed opposite to the first partition member and at a preset distance to form a first flow channel. The first flow channel connects the first air outlet and the air outlet. The fourth sidewall is disposed opposite to the second partition member and at a preset distance to form a second flow channel. The second flow channel connects the second air outlet and the air outlet. The first sidewall is disposed opposite to the second partition member and at a preset distance to form a third flow channel. The third flow channel connects the second air inlet and the air outlet.

4. The dual-airflow chassis as described in claim 3, characterized in that, The first partition has a first notch that extends along the length of the third sidewall. The first notch communicates with the first flow channel and the air outlet. A flow gap is provided between the multiple battery cells. The first notch is adapted to the side of the battery cell so that air flowing through the first flow channel is sent out through the air outlet through the first notch and the flow gap for heat dissipation of the multiple battery cells.

5. The dual-airflow chassis as described in claim 4, characterized in that, The second partition is provided with a second notch, which extends along the length of the fourth sidewall. The second notch communicates with the second flow channel and the air outlet. The second notch is adapted to the side of the battery cell so that the air flowing through the second flow channel is sent out through the air outlet through the second notch and the flow gap for heat dissipation of the multiple battery cells.

6. The dual-airflow chassis as described in claim 3, characterized in that, The second air inlet includes a third air outlet, and the second partition is located below the third air outlet along the height direction, forming the third air guide channel between the second partition and the third air outlet.

7. The dual-airflow chassis as described in claim 6, characterized in that, The second air inlet includes a fourth air outlet, which is a preset distance away from the third air outlet. The second partition is located below the third air outlet along the height direction, and the second partition, the third air outlet, and the fourth air outlet form the third air guide channel.

8. The dual-airflow chassis as described in claim 7, characterized in that, The second partition is provided with a third notch and a fourth notch, which extend along the width direction of the first sidewall. The third notch and the fourth notch are respectively located below the third air vent and the fourth air vent. The third notch and the fourth notch are both connected to the third air guiding channel. The third notch and the fourth notch are both adapted to the side of the battery cell to dissipate heat from the side of the battery cell.

9. The dual-airflow chassis as described in claim 2, characterized in that, The air supply assembly includes a first fan and a second fan, which are installed at the air outlet and are spaced apart along the height direction of the second sidewall.

10. The dual-airflow chassis as described in claim 2, characterized in that, The first sidewall is provided with multiple through holes, and the first air inlet and the second air inlet are each composed of multiple through holes, which are arranged in an array.

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