Battery module with 360-degree air cooling partition plate

Abstract

The utility model discloses a battery module with 360-degree air-cooling partition plates, a module partition plate is arranged between adjacent battery cell modules, the module partition plate comprises a first component, a second component and a third component, two ends of the first component are respectively connected to the surfaces of the two adjacent battery cell modules, and two ends of the second component are respectively connected to the surfaces of the two adjacent battery cell modules. The two ends of the second assemblies are connected to the adjacent first assemblies in the first direction, the two ends of the third assemblies are connected to the adjacent first assemblies in the second direction, the first direction is perpendicular to the second direction, and the second assemblies divide the battery cell modules into a plurality of first air channels in the first direction; the battery cell modules are divided into a plurality of second air ducts along a second direction by the third assemblies, and airflow can converge in the first air ducts and the second air ducts to form 360-degree heat dissipation airflow circulation. When the battery module works to generate heat, the heat can be diffused to the periphery through the crisscrossed air ducts and is not limited to the horizontal direction any more, so that the heat dissipation efficiency is effectively improved, and the local high temperature phenomenon is reduced.

Description

A battery module with a 360° air-cooled separator Technical Field

[0001] This utility model relates to the field of battery module technology, and in particular to a battery module with a 360° air-cooled separator. Background Technology

[0002] By the end of 2024, China's cumulative installed capacity of power storage exceeded 100 GW for the first time, reaching 137.9 GW. The installed capacity of new energy storage surpassed pumped hydro storage for the first time, reaching 78.3 GW / 184.2 GW / h, with power / energy scale increasing by 126.5% / 147.5% year-on-year. In 2024, China added 43.7 GW / 109.8 GWh of new energy storage capacity, representing year-on-year growth of 103% / 136%. In terms of production, from January to October 2024, Chinese companies produced over 200 GWh of energy storage lithium batteries in the global market, with the total annual production expected to exceed 300 GWh. Lithium iron phosphate (LFP) batteries were the primary energy storage battery cells, characterized by good thermal stability, stable performance, and high charge / discharge rates. However, traditionally manufactured battery modules, due to technical limitations, only consider heat dissipation through horizontal gaps in the separators. This leads to localized high temperatures in areas near heat sources (such as the cell center or electrode connections) due to insufficient heat dissipation, while peripheral areas experience better heat dissipation and lower temperatures. This results in a large overall temperature gradient, impacting battery performance. Furthermore, the horizontal airflow arrangement is not effectively coordinated with the external cooling system's airflow channels, causing inconsistent airflow speeds or volumes across different areas, leading to variations in localized cooling capacity. Therefore, a new technology is needed to improve these design flaws, enhance battery heat dissipation, and extend battery life.

[0003] The separator in the battery module is a key component of the air-cooled heat dissipation system. By optimizing the airflow path and cell spacing design, the heat dissipation efficiency of the battery module can be improved, ensuring that the cells operate within a safe temperature range. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a battery module with a 360° air-cooled separator.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A battery module with a 360° air-cooled separator includes a plurality of sequentially arranged cell modules. The module separator is characterized by having a module separator between adjacent cell modules. The module separator includes a first component, a second component, and a third component. The two ends of the first component are respectively connected to the surfaces of two adjacent cell modules. The two ends of the second component are connected to the adjacent first component along a first direction. The two ends of the third component are connected to the adjacent first component along a second direction. The first and second directions are perpendicular to each other. The second component divides the cell modules into a plurality of first air channels along the first direction, and the third component divides the cell modules into a plurality of second air channels along the second direction. Airflow can converge in the first and second air channels to form a 360° heat dissipation airflow circulation.

[0007] Furthermore, the first component includes a plurality of hollow cylinders, the end faces of which are connected to the surface of adjacent cell modules.

[0008] Furthermore, the hollow cylinders are arranged uniformly at the same spacing.

[0009] Furthermore, the second component includes a plurality of crossbars, the two ends of which are connected to the side surfaces of adjacent hollow cylinders.

[0010] Furthermore, the third component includes several longitudinal bars, the two ends of which are connected to the side surfaces of adjacent hollow cylinders.

[0011] Furthermore, the first direction is horizontal, and the first air duct is arranged in the horizontal direction.

[0012] Furthermore, the second direction is the vertical direction, and the second air duct is arranged in the vertical direction.

[0013] Furthermore, it also includes a module bracket on which the battery cell module is placed.

[0014] Furthermore, the outer side of the battery cell module is provided with several straps for fixation.

[0015] Furthermore, the number of straps is at least two.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Improved heat dissipation efficiency and reduced localized high temperatures: The 360° perforated heat dissipation design breaks through the limitations of traditional heat dissipation, allowing heat to spread more quickly and evenly. Localized high-temperature areas are no longer prone to appear in the battery module, resulting in a more balanced overall temperature distribution. This helps avoid battery performance degradation caused by localized overheating, such as capacity reduction and decreased charge / discharge efficiency, effectively extending battery life.

[0018] 2. Enhanced airflow uniformity and optimized cooling effect: Horizontally and vertically connected air ducts improve airflow within the battery module. Airflow velocity and volume are more stable across different areas, reducing localized differences in cooling capacity. This ensures more consistent cooling across all parts of the battery module, further enhancing heat dissipation and guaranteeing battery performance stability.

[0019] 3. Adaptable to high-power and rapid charging / discharging requirements: The hollow cylindrical connection and porous structure's heat dissipation method can quickly remove the large amount of heat generated by the battery during high-power output or rapid charging / discharging. In applications such as energy storage and automotive batteries, where high battery charging / discharging performance is required, this separator ensures that the battery maintains good performance even under frequent charging and discharging, improving the overall operating efficiency and reliability of the equipment.

[0020] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the structure of an embodiment of the present utility model;

[0022] Figure 2 is a schematic diagram of the module partition structure of an embodiment of this utility model;

[0023] Figure 3 is a side view of the overall structure of an embodiment of this utility model;

[0024] Figure 4 is a top view of the overall structure of an embodiment of this utility model;

[0025] Figure 5 is a schematic diagram of the air-cooling principle of an embodiment of this utility model.

[0026] In the diagram: 1-Battery cell module, 2-First air duct, 3-Second air duct, 4-Hollow cylinder, 5-Horizontal bar, 6-Vertical bar, 7-Module bracket, 8-Binding strap, 9-Module partition, 10-Horizontal airflow, 11-Vertical airflow. Detailed Implementation

[0027] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] As shown in Figures 1 and 2, a battery module with a 360° air-cooled separator includes several battery cell modules 1 arranged in sequence. A module separator 9 is provided between adjacent battery cell modules 1. The module separator 9 includes a first component, a second component, and a third component. The two ends of the first component are respectively connected to the surfaces of two adjacent battery cell modules 1. The two ends of the second component are connected to the adjacent first component in a horizontal direction. The two ends of the third component are connected to the adjacent first component in a vertical direction. The horizontal and vertical directions are perpendicular to each other. As shown in Figure 3, the second component divides the battery cell modules 1 into several first air channels 2 in a horizontal direction. As shown in Figure 4, the third component divides the battery cell modules 1 into several second air channels 3 in a vertical direction. The airflow can converge in the first air channels 2 and the second air channels 3 to form a 360° heat dissipation airflow circulation.

[0032] The first component consists of several hollow cylinders 4, with their end faces connected to the surfaces of adjacent cell modules 1. The hollow cylinders 4 are evenly arranged at the same spacing. The second component consists of several horizontal bars 5, with both ends of the horizontal bars 5 connected to the sides of adjacent hollow cylinders 4. The third component consists of several vertical bars 6, with both ends of the vertical bars 6 connected to the sides of adjacent hollow cylinders 4.

[0033] The hollow cylinder 4 has unique heat dissipation advantages, with uniform heat dissipation on its surface and no obvious heat dissipation dead zones. When heat is generated inside the battery cell module 1, the heat can be quickly dissipated to the surrounding environment along the surface of the hollow cylinder 4. This better maintains battery performance stability during high-power output or rapid charging and discharging, ensuring the battery maintains good working condition under various operating conditions.

[0034] Preferably, it also includes a module bracket 7 and a strap 8. The battery cell module 1 is placed on the module bracket 7, and the strap 8 is wrapped around the outside of the battery cell module 1, and two straps are provided.

[0035] As shown in Figure 5, the separator pores are innovatively designed as intersecting pores connected in both horizontal and vertical directions, achieving 360° ventilation and heat dissipation. This design ensures both sufficient ventilation and the structural strength of the separator. When the battery module is operating, the heat generated by the battery cells is first transferred to the separator. Due to the presence of pores, the heat diffuses outwards along the pore surface.

[0036] Meanwhile, the module bracket 7 and the strap 8 ensure that the separator achieves efficient heat dissipation without affecting the insulation performance, mechanical strength and other properties of the battery module.

[0037] When the battery module is working, the heat generated by the cell module 1 is first transferred to the hollow cylinder 4. Due to the presence of the first air duct 2 and the second air duct 3, the heat diffuses outwards along the surfaces of the hollow cylinder 4, the crossbar 5, and the vertical bar 6. When the horizontal airflow 10 passes through the first air duct 2, it intersects with the vertical airflow 11 along the second air duct 3, forming a 360° heat dissipation airflow circulation.

[0038] The external cooling system is connected to the air ducts of the partition. Cooling air enters the first air duct 2 and the second air duct 3, carries away heat, and is then discharged. By rationally designing the shape of the air ducts and the airflow velocity, it is possible to ensure that the cooling air flows evenly within the air ducts, further improving the heat dissipation effect.

[0039] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A battery module with a 360° air-cooled separator, comprising a plurality of sequentially arranged battery cell modules (1), characterized in that: A module partition (9) is provided between adjacent cell modules (1). The module partition (9) includes a first component, a second component, and a third component. The two ends of the first component are respectively connected to the surfaces of two adjacent cell modules (1). The two ends of the second component are connected to the adjacent first component along a first direction. The two ends of the third component are connected to the adjacent first component along a second direction. The first direction and the second direction are perpendicular to each other. The second component divides the cell modules (1) into several first air channels (2) along the first direction. The third component divides the cell modules (1) into several second air channels (3) along the second direction. The airflow can converge in the first air channel (2) and the second air channel (3) to form a 360° heat dissipation airflow circulation.

2. The battery module with a 360° air-cooled separator according to claim 1, characterized in that: The first component includes a plurality of hollow cylinders (4), the end faces of which are connected to the surface of an adjacent cell module (1).

3. A battery module with a 360° air-cooled separator according to claim 2, characterized in that: The hollow cylinders (4) are arranged uniformly at the same spacing.

4. A battery module with a 360° air-cooled separator according to claim 2, characterized in that: The second component includes several crossbars (5), the two ends of which are connected to the sides of adjacent hollow cylinders (4).

5. A battery module with a 360° air-cooled separator according to claim 2, characterized in that: The third component includes several longitudinal bars (6), the two ends of which are connected to the sides of adjacent hollow cylinders (4).

6. A battery module with a 360° air-cooled separator according to claim 1, characterized in that: The first direction is horizontal, and the first air duct (2) is arranged in the horizontal direction.

7. A battery module with a 360° air-cooled separator according to claim 1, characterized in that: The second direction is the vertical direction, and the second air duct (3) is arranged in the vertical direction.

8. A battery module with a 360° air-cooled separator according to claim 1, characterized in that: It also includes a module bracket (7), on which the battery cell module (1) is placed.

9. A battery module with a 360° air-cooled separator according to claim 1, characterized in that: The battery cell module (1) is fixed by several straps (8) on its outer side.

10. A battery module with a 360° air-cooled separator according to claim 9, characterized in that: The number of the straps (8) is at least two.

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