Air-cooled lithium battery heat dissipation tray

Abstract

The utility model discloses an air-cooled lithium battery heat dissipation tray, which relates to the technical field of battery heat dissipation, and comprises a tray body, and the middle part of the tray body is provided with an inner groove for accommodating a battery module; the supporting strips are located in the inner grooves, the multiple supporting strips are used for supporting the battery modules, air channels are formed between the supporting strips, and the air channels communicate with an air cooling space above the tray body; a plurality of turbulent flow blocks are arranged in the air duct, and the turbulent flow blocks are distributed in a staggered manner; the air inlet is located in the side face of the bottom of the tray body. According to the utility model, the heat dissipation effect on the bottom surface of the battery module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation, in particular to an air-cooled lithium battery heat dissipation tray. Background Art

[0002] With the fundamental resolution of power battery safety and endurance issues, battery heating has become a new research hotspot. Among these issues, rapidly cooling high-heat-generating batteries has become a key research topic. Traditionally, air-cooled outdoor energy storage cabinets typically utilize pre-assembled battery packs secured to a battery rack, with air cooling units and ductwork designed to dissipate heat from all battery packs within the cabinet. Only a few patents have disclosed MTS (module-to-system) designs, but these patents simply utilize ductwork on the sides of the battery cells to dissipate heat, without considering heat dissipation from the bottom of the cells.

[0003] For example, patent publication number CN118173964A relates to a new energy vehicle battery pack support device. Its technical solution includes a base tray, a filter plate, a backing plate, and a positioning seat. The base tray has a square notch on its lower surface, with heat sinks equidistantly positioned at the top of the inner wall of the square notch. The base tray's outer wall is bolted to a positioning seat, onto which the filter plate is slidably inserted. Utility Model Content

[0004] Technical problems to be solved by utility models

[0005] In order to solve the technical problem that the existing battery module tray has poor heat dissipation effect on the bottom surface of the battery module, the utility model provides an air-cooled lithium battery heat dissipation tray, which improves the heat dissipation effect on the bottom surface of the battery module.

[0006] Technical Solution

[0007] In order to solve the above problems, the technical solution provided by the present invention is as follows:

[0008] A heat dissipation tray for air-cooled lithium batteries comprises a tray body, with an inner groove in the middle provided for accommodating a battery module; support bars located in the inner groove, with a plurality of support bars provided and used to support the battery module, with air ducts provided between the support bars, the air ducts being connected to the air-cooling space above the tray body; a plurality of spoiler blocks provided in the air duct, the spoiler blocks being distributed in an alternating manner; and an air inlet located on the bottom side of the tray body.

[0009] When the external fan is running, air is drawn in through the air inlet and flows through the bottom of the battery module through the air duct. The presence of the spoiler makes the air flow more turbulent, increasing the contact area and time between the air and the battery surface, thereby improving heat dissipation efficiency. Ultimately, the hot air is discharged outside the tray, ensuring that the battery remains within a safe operating temperature range. The heat dissipation tray is generally inserted directly into the air-cooled energy storage cabinet, with each tray containing a battery module. The air-cooling space is the internal space of the air-cooled energy storage cabinet. The inner groove is a recessed surface relative to the tray, providing space for the cooling airflow to flow through the bottom surface of the battery module. The support bar structurally supports the battery module, reducing the contact area at the bottom compared to battery modules placed directly on the tray, and freeing up space for the cooling airflow to pass through, improving the heat dissipation effect at the bottom. The air duct is used to guide the cooling airflow through the air-cooling space. The spoiler enhances the turbulence of the cooling air at the bottom, increasing the turbulence intensity and enhancing the heat exchange capacity at the bottom. The air inlet located on the bottom side of the tray body shortens the path length of the cooling airflow at the bottom and the outside of the tray body, accelerates the circulation speed of the cooling airflow and the heat exchange speed, and further improves the heat dissipation effect.

[0010] Optionally, the spoiler is not higher than the support bar.

[0011] The spoiler is lower than or level with the support bar. The support bar is used to provide structural support and needs to stably contact the battery module to avoid slipping or deviation. The spoiler is mainly used for heat dissipation. If it is higher than the support bar, the support bar cannot contact the battery module, and its structural support function cannot be realized, which will cause the battery module to be unstable.

[0012] Optionally, a through air duct is provided at the bottom of the support bar, and the through air duct is distributed along the length of the support bar.

[0013] The presence of the through air duct enables the support bar itself to dissipate heat through the air-cooling airflow, and the distribution along the length of the support bar can improve the heat dissipation effect of the entire support bar.

[0014] Optionally, the through air duct has an arched structure.

[0015] The arch shape itself has higher structural strength and can provide better support without adding extra materials.

[0016] Optionally, the through air duct is connected to the bottom heat dissipation air flow layer below the tray body.

[0017] Below the tray body is the air-cooling space of the air-cooled energy storage cabinet. The bottom heat dissipation airflow layer also passes through the air-cooling airflow and penetrates the air duct to achieve better heat dissipation effect.

[0018] Optionally, the spoiler block is a thin-walled structure, and an air flow groove is provided in the spoiler block.

[0019] The spoiler adopts a thinner wall design, which can reduce the weight of the entire tray and also help increase the surface area of the spoiler, thereby increasing the contact area with the airflow and improving heat exchange efficiency. Optionally, the air flow groove is connected to the bottom heat dissipation airflow layer below the tray body.

[0020] The wind grooves further enhance the heat dissipation effect through the cooling airflow, and the wind grooves can further increase the disturbance of the airflow, so that the airflow forms a more complex flow pattern when passing through the spoiler, which helps to improve the heat dissipation efficiency.

[0021] Optionally, the groove angle of the wind groove is an arc surface.

[0022] The curved surface can better guide the airflow, so that the airflow can avoid more vortices when passing through the wind groove, which causes the cooling airflow to stay in the wind groove for too long, thereby accelerating the circulation of the cooling airflow and helping to improve heat exchange efficiency.

[0023] Optionally, the air inlet includes air inlet 1 and air inlet 2, and the air inlet 1 and air inlet 2 are respectively located on the sides of the length and width of the bottom of the tray body.

[0024] By providing air inlets along both the long and wide sides of the tray's bottom, cooling air can be introduced from two different directions. This helps improve airflow uniformity and ensures more even airflow distribution beneath the entire battery module. Multiple air inlets increase the number of air entry points, allowing more cooling air to enter the tray simultaneously, improving heat dissipation efficiency. By providing air inlets in two different directions, dead zones within the air duct are reduced, ensuring effective cooling of all areas beneath the battery modules.

[0025] Optionally, the spoiler is elliptical.

[0026] The spoiler is designed with an elliptical shape, which helps guide the airflow to form a more complex flow path, thereby improving the spoiler effect.

[0027] Beneficial effects

[0028] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0029] The technical solution provided by the present invention is to provide a support bar located in the inner groove. The support bar is provided with a plurality of bars and is used to support the battery module. An air duct is provided between the support bars, and the air duct is connected to the air-cooling space above the tray body. The air duct is provided with a plurality of spoiler blocks, and the spoiler blocks are staggered. The air duct enables the cooling air to flow evenly through the bottom of the battery module, thereby removing heat. The spoiler blocks can increase the turbulence of the air flow to enhance the heat exchange efficiency, that is, to allow the cooling air to more effectively contact the battery and remove heat. The overall heat dissipation effect of the bottom surface of the battery module is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of an air-cooled lithium battery heat dissipation tray proposed in an embodiment of the present utility model;

[0031] Figure 2 A cross-sectional view of a support bar of an air-cooled lithium battery heat dissipation tray proposed in an embodiment of the present utility model;

[0032] Figure 3 A cross-section of a spoiler block of an air-cooled lithium battery heat dissipation tray proposed in an embodiment of the utility model Figure 1 ;

[0033] Figure 4 A cross-section of a spoiler block of an air-cooled lithium battery heat dissipation tray proposed in an embodiment of the utility model Figure 2 ;

[0034] 1. Tray body; 2. Battery module; 3. Support bar; 301. Through air duct; 302. Ventilation holes; 4. Spoiler block; 401. Wind groove; 402. Curved surface; 5. Spoiler air duct; 6. Air inlet 1; 7. Air inlet 2; 8. Tray vents; 9. Bottom heat dissipation airflow layer. DETAILED DESCRIPTION

[0035] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0036] Example 1

[0037] Combined with attachment Figure 1 A heat dissipation tray for air-cooled lithium batteries comprises a tray body, an inner groove for accommodating a battery module is provided in the middle; a support bar is located in the inner groove, a plurality of support bars are provided and are used to support the battery module, an air duct is provided between the support bars, and the air duct is connected to the air-cooling space above the tray body; a plurality of spoiler blocks are provided in the air duct, and the spoiler blocks are distributed in an alternating manner; and an air inlet is located on the bottom side of the tray body.

[0038] This embodiment is based on the MTS design and uses a tray to insert into the energy storage cabinet, which is very convenient for both initial installation and subsequent maintenance and disassembly. Four battery modules are placed in the inner slot of the tray body, and the air-cooled air entering the cabinet flows through the front end of the tray and flows backward. The tray body is formed in one piece by profiles and is provided with tray ventilation holes.

[0039] The support bars are made of aluminum. Aluminum is an excellent thermal conductor, helping to quickly transfer heat generated by the battery modules to the cooling air in the air duct. Aluminum bars support the tray body and the battery modules, forming the bottom air duct. The top surface of the support bars is flat and can be provided with anti-slip grooves to enhance friction and prevent the battery modules from slipping or shifting. Ventilation holes are located in the middle of the support bars for exchanging cooling air, accelerating heat exchange efficiency while preventing heat accumulation and overheating.

[0040] The spoiler is no higher than the support bar. Generally, the spoiler is 0.5 to 2 cm lower than the support bar. The higher the spoiler is, the larger the contact area with the cooling airflow can be. This allows the heat of the cooling airflow to be partially transferred out through heat exchange, slightly improving the heat dissipation effect.

[0041] The bottom of the support bar is provided with a through air duct for passing cooling airflow, and the through air duct is distributed along the length of the support bar. The through air duct has an arched structure.

[0042] The through air duct is connected to the bottom heat dissipation airflow layer below the tray body. The bottom heat dissipation airflow layer is connected to the air cooling space. The air cooling air in the cabinet flows through the front end of the tray and flows backward at the same time.

[0043] The spoiler block is a thin-walled structure, and an air flow groove is provided in the spoiler block. The air flow groove is connected to the bottom heat dissipation air flow layer below the tray body.

[0044] The air inlet includes air inlet 1 and air inlet 2, which are respectively located on the sides of the length and width of the bottom of the tray body. After passing through the front rectangular air inlet and the spoiler, the cold air flows out from the rear end of the module, removing heat. A rectangular air outlet is opened in the middle of the front plate of the tray. A reinforced aluminum strip is supported between the tray and the module, forming a bottom air duct between the bottom of the module and the tray. The cold air entering the energy storage cabinet not only flows along the sides of the module to remove heat from the battery cells, but the bottom air duct also removes heat from the bottom of the battery cells, increasing the heat exchange rate.

[0045] The spoiler is elliptical. This solution designs an elliptical spoiler in the air duct at the bottom of the tray to enhance the bottom cold air turbulence, increase the turbulence intensity, and enhance the bottom heat exchange capacity.

[0046] Example 2

[0047] Combined with attachment Figure 4 Compared with the technical solution of Example 1, the air-cooled lithium battery heat dissipation tray of this embodiment can be improved as follows:

[0048] The corners of the airflow grooves are curved surfaces. Compared to sharp corners, curved surfaces can reduce the resistance loss of airflow inside the grooves, which means that airflow can pass through the spoiler more smoothly, helping to increase the overall airflow speed and thus improve heat exchange efficiency.

[0049] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An air-cooled lithium battery heat dissipation tray, characterized in that: include The tray body has an inner groove in the middle for accommodating the battery module; A support bar is located in the inner groove, wherein the support bar is provided with a plurality of bars and is used to support the battery module, and an air duct is provided between the support bars, and the air duct is connected to the air cooling space above the tray body; The air duct is provided with a plurality of spoiler blocks, and the spoiler blocks are distributed in a staggered manner; The air inlet is located on the bottom side of the tray body.

2. The air-cooled lithium battery heat dissipation tray according to claim 1, characterized in that: The spoiler is no higher than the supporting bar.

3. The air-cooled lithium battery heat dissipation tray according to claim 1, characterized in that: A through air duct is provided at the bottom of the support bar, and the through air duct is distributed along the length of the support bar.

4. The air-cooled lithium battery heat dissipation tray according to claim 3, characterized in that: The through air duct is an arched structure.

5. The air-cooled lithium battery heat dissipation tray according to claim 3, characterized in that: The through air duct is communicated with the bottom heat dissipation air flow layer below the tray body.

6. The air-cooled lithium battery heat dissipation tray according to claim 1, characterized in that: The spoiler block is a thin-walled structure, and an air flow groove is provided in the spoiler block.

7. The air-cooled lithium battery heat dissipation tray according to claim 6, characterized in that: The air flow groove is connected to the bottom heat dissipation air flow layer below the tray body.

8. The air-cooled lithium battery heat dissipation tray according to claim 7, characterized in that: The groove angle of the air passing groove is an arc surface.

9. The air-cooled lithium battery heat dissipation tray according to claim 1, characterized in that: The air inlet includes air inlet 1 and air inlet 2, and the air inlet 1 and air inlet 2 are respectively located on the sides of the length and width of the bottom of the tray body.

10. The air-cooled lithium battery heat dissipation tray according to claim 1, characterized in that: The spoiler is oval.

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