A semi-enclosed heat dissipation aluminum fin structure for power batteries

Abstract

This utility model relates to the field of power battery heat dissipation technology and discloses a semi-enclosed heat dissipation aluminum sheet structure for a power battery, including a power battery body, a semi-enclosed heat dissipation aluminum sheet body, and a thermally conductive adhesive layer. The power battery body has two oppositely arranged first sides, two oppositely arranged second sides, and a top surface and a bottom surface arranged opposite to each other. This semi-enclosed heat dissipation aluminum sheet structure, by designing the semi-enclosed heat dissipation aluminum sheet body as a U-shaped structure, allows it to precisely fit the bottom surface and two first sides of the power battery body. This semi-enclosed form avoids the obstruction of the battery electrode lead-out by a fully enclosed structure and significantly improves the heat dissipation area and thermal conductivity. The thermally conductive adhesive layer uses a high thermal conductivity material, ensuring a tight fit between the semi-enclosed heat dissipation aluminum sheet body and the power battery body while effectively conducting the heat generated by the battery operation to the heat dissipation aluminum sheet, achieving rapid heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of power battery heat dissipation technology, and in particular to a semi-enclosed heat dissipation aluminum sheet structure for power batteries. Background Technology

[0002] As a core component of new energy vehicles and energy storage equipment, power batteries continuously generate heat during operation. If the heat cannot be dissipated in time, the battery temperature will rise, which will affect the battery's charging and discharging performance, cycle life, and even trigger the risk of thermal runaway. Therefore, an effective heat dissipation structure is needed to ensure the safe and stable operation of power batteries.

[0003] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: The commonly used heat dissipation structures for existing power batteries include fully enclosed aluminum shells, heat dissipation silicone pads, and heat dissipation plates. Although fully enclosed aluminum shells have a large heat dissipation area, they completely cover the top and sides of the power battery, which will hinder the lead-out of the battery electrodes and the connection with external circuits, and the assembly flexibility is poor. On the other hand, the simple heat dissipation silicone pad and heat dissipation plate structures have low adhesion between the heat dissipation plate and the battery, limited thermal conductivity, and require additional fixing structures, which increases the overall assembly complexity. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing power battery heat dissipation structure has the disadvantages of hindering the lead-out of battery electrodes, poor assembly flexibility, low fit, limited thermal conductivity and high overall assembly complexity. To this end, we propose a semi-enclosed heat dissipation aluminum sheet structure for power batteries.

[0005] To achieve the above objectives, this application adopts the following technical solution: a semi-enclosed heat dissipation aluminum sheet structure for a power battery, comprising a power battery body, a semi-enclosed heat dissipation aluminum sheet body, and a thermally conductive adhesive layer. The power battery body has two first side surfaces arranged opposite each other, two second side surfaces arranged opposite each other, and a top surface and a bottom surface arranged opposite each other. The semi-enclosed heat dissipation aluminum sheet body has a U-shaped structure, including a bottom wall that is attached to the bottom surface of the power battery body, and two side walls that are respectively attached to the two first side surfaces. The thermally conductive adhesive layer is sandwiched between the bottom wall of the semi-enclosed heat dissipation aluminum sheet body and the bottom surface of the power battery body, and between the side walls of the semi-enclosed heat dissipation aluminum sheet body and the first side surfaces of the power battery body. The semi-enclosed heat dissipation aluminum sheet body is fixedly connected to the power battery body through the thermally conductive adhesive layer.

[0006] Preferably, a plurality of heat dissipation ribs extending vertically are integrally formed on the outer side wall of the semi-enclosed heat dissipation aluminum sheet body, and the heat dissipation ribs are arranged at intervals along the length direction of the semi-enclosed heat dissipation aluminum sheet body.

[0007] Preferably, the top ends of the two side walls of the semi-enclosed heat dissipation aluminum fin body are bent away from the power battery body to form a buckle, and the buckle engages with the top edge of the power battery body.

[0008] Preferably, the bottom wall of the semi-enclosed heat dissipation aluminum sheet body has two integrally formed heat dissipation extensions on the side away from the power battery body. The two heat dissipation extensions extend outward in a horizontal direction and have the same thickness as the bottom wall thickness of the semi-enclosed heat dissipation aluminum sheet body.

[0009] Preferably, the inner wall of the semi-enclosed heat dissipation aluminum fin body is coated with an insulating coating, the thickness of which is 0.05 to 0.1 mm.

[0010] Preferably, the main body of the semi-enclosed heat dissipation aluminum sheet is aluminum alloy, and the thickness of the bottom wall and the side wall is 0.8 to 1.5 mm.

[0011] Preferably, the end of the heat dissipation extension away from the semi-enclosed heat dissipation aluminum sheet body is bent vertically to form an L-shaped structure, and a number of heat dissipation through holes are opened on the bent section.

[0012] The technical effects and advantages of this utility model are as follows: In this invention, the semi-enclosed heat dissipation aluminum sheet body is designed as a U-shaped structure, which allows it to precisely fit the bottom surface and two first sides of the power battery body. This semi-enclosed form not only avoids the obstruction of the battery electrode lead-out by the fully enclosed structure, but also significantly improves the heat dissipation area and thermal conductivity. The thermally conductive adhesive layer uses a high thermal conductivity material, which ensures that the semi-enclosed heat dissipation aluminum sheet body is tightly attached to the power battery body, while effectively conducting the heat generated by the battery operation to the heat dissipation aluminum sheet, realizing rapid heat exchange. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the thermally conductive adhesive layer structure of this utility model; Figure 3 This is a schematic diagram of the main structure of the semi-enclosed heat dissipation aluminum fin of this utility model; Figure 4 This is a schematic diagram of the heat dissipation extension structure of this utility model.

[0014] Legend: 1. Power battery body; 2. Semi-enclosed heat dissipation aluminum sheet body; 3. Thermally conductive adhesive layer; 4. Insulating coating; 101. Second side; 102. First side; 201. Heat dissipation rib; 202. Buckle; 203. Heat dissipation extension; 204. Heat dissipation through hole. Detailed Implementation

[0015] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0016] Reference Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a semi-enclosed heat dissipation aluminum sheet structure for a power battery, including a power battery body 1, a semi-enclosed heat dissipation aluminum sheet body 2, and a thermally conductive adhesive layer 3. The power battery body 1 has two oppositely arranged first side surfaces 102, two oppositely arranged second side surfaces 101, and a top surface and a bottom surface arranged opposite to each other. The semi-enclosed heat dissipation aluminum sheet body 2 has a U-shaped structure, including a bottom wall that is attached to the bottom surface of the power battery body 1, and two side walls that are respectively attached to the two first side surfaces 102. The thermally conductive adhesive layer 3 is sandwiched between the bottom wall of the semi-enclosed heat dissipation aluminum sheet body 2 and the bottom surface of the power battery body 1, and between the side walls of the semi-enclosed heat dissipation aluminum sheet body 2 and the first side surfaces 102 of the power battery body 1. The semi-enclosed heat dissipation aluminum sheet body 2 is fixedly connected to the power battery body 1 through the thermally conductive adhesive layer 3. Specifically: By designing the semi-enclosed heat dissipation aluminum sheet body 2 as a U-shaped structure, it can precisely fit the bottom surface and two first side surfaces 102 of the power battery body 1. This semi-enclosed form not only avoids the obstruction of the battery electrode lead-out by the fully enclosed structure, but also significantly improves the heat dissipation area and thermal conductivity. The thermally conductive adhesive layer 3 uses a high thermal conductivity material, which ensures that the semi-enclosed heat dissipation aluminum sheet body 2 is tightly fitted to the power battery body 1, while effectively conducting the heat generated by the battery operation to the heat dissipation aluminum sheet, realizing rapid heat exchange.

[0017] Reference Figure 3 - Figure 4 As shown in this embodiment: a number of heat dissipation ribs 201 extending vertically are integrally formed on the outer side wall of the semi-enclosed heat dissipation aluminum sheet body 2. The heat dissipation ribs 201 are arranged at intervals along the length direction of the semi-enclosed heat dissipation aluminum sheet body 2. The top ends of the two side walls of the semi-enclosed heat dissipation aluminum sheet body 2 are bent away from the power battery body 1 to form a buckle 202. The buckle 202 is engaged with the top edge of the power battery body 1. Specifically: Several vertically extending heat dissipation ribs 201 are provided on the outer wall of the semi-enclosed heat dissipation aluminum fin body 2, which further increases the heat dissipation area and accelerates the dissipation of heat to the surrounding environment. The heat dissipation ribs 201 are arranged at intervals along the length of the semi-enclosed heat dissipation aluminum fin body 2, which can maximize the heat dissipation effect in a limited space. The buckles 202 formed by bending the top of the two side walls away from the power battery body 1 are engaged with the top edge of the power battery body 1. This design can achieve a stable connection between the heat dissipation aluminum fin and the battery without additional fixing structure, reducing assembly complexity and improving production efficiency.

[0018] Reference Figure 4 As shown in this embodiment: the bottom wall of the semi-enclosed heat dissipation aluminum sheet body 2 is integrally formed with two heat dissipation extensions 203 on the side away from the power battery body 1. The two heat dissipation extensions 203 extend outward in the horizontal direction and the thickness is the same as the thickness of the bottom wall of the semi-enclosed heat dissipation aluminum sheet body 2. The end of the heat dissipation extension 203 away from the semi-enclosed heat dissipation aluminum sheet body 2 is bent in the vertical direction to form an L-shaped structure, and a number of heat dissipation through holes 204 are opened on the bent section. Specifically, two heat dissipation extensions 203 are integrally formed on the side of the bottom wall away from the power battery body 1, extending outward in the horizontal direction, and their thickness is consistent with the thickness of the bottom wall of the semi-enclosed heat dissipation aluminum fin body 2, further expanding the heat dissipation range. The L-shaped structure formed by bending the end of the heat dissipation extension 203 away from the semi-enclosed heat dissipation aluminum fin body 2 in the vertical direction, as well as several heat dissipation through holes 204 opened on the bent section, optimize the air flow path, so that heat can be dissipated more smoothly and improve the overall heat dissipation performance.

[0019] Reference Figure 3 As shown, in this embodiment: the inner wall of the semi-enclosed heat dissipation aluminum fin body 2 is coated with an insulating coating 4, the thickness of the insulating coating 4 is 0.05-0.1mm, the semi-enclosed heat dissipation aluminum fin body 2 is made of aluminum alloy, and the thickness of the bottom wall and the side wall is 0.8-1.5mm. Specifically: The insulating coating 4 applied to the inner wall of the semi-enclosed heat sink aluminum fin body 2 has a thickness controlled between 0.05-0.1mm. This effectively prevents short circuits between the battery and the heat sink aluminum fin, ensuring safe use, while also preventing the coating from affecting thermal conductivity due to excessive thickness. Aluminum alloy is selected as the material for the semi-enclosed heat sink aluminum fin body 2, and the thickness of the bottom and side walls is 0.8-1.5mm. This ensures structural strength while achieving good heat dissipation and lightweight design, which is beneficial to improving the range of new energy vehicles.

[0020] Working principle: The user attaches the bottom wall and two side walls of the semi-enclosed heat dissipation aluminum fin body 2 to the bottom surface and two first side surfaces 102 of the power battery body 1, respectively. At this time, the thermally conductive adhesive layer 3 is sandwiched between the two, achieving a tight connection and efficient heat conduction. Then, the buckles 202 formed by bending the top of the two side walls of the semi-enclosed heat dissipation aluminum fin body 2 are engaged with the top edge of the power battery body 1 to complete the stable installation of the heat dissipation aluminum fin on the battery without the need for additional fixing structures. During the operation of the battery, the heat generated is quickly conducted to the semi-enclosed heat dissipation aluminum fin body 2 through the thermally conductive adhesive layer 3. The heat dissipation ribs 201 on the outer wall of the semi-enclosed heat dissipation aluminum fin body 2 and the heat dissipation extension 203 on the bottom wall increase the heat dissipation area and accelerate heat dissipation. At the same time, the L-shaped structure of the heat dissipation extension 203 and the heat dissipation through holes 204 optimize airflow and further improve heat dissipation efficiency. The insulating coating 4 on the inner side wall ensures the electrical safety between the battery and the heat dissipation aluminum fin. The entire heat dissipation process is efficient and stable, effectively ensuring the safe and stable operation of the power battery.

[0021] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A semi-enclosed heat dissipation aluminum fin structure for a power battery, comprising a power battery body (1), a semi-enclosed heat dissipation aluminum fin body (2), and a thermally conductive adhesive layer (3), characterized in that: The power battery body (1) has two first side surfaces (102) arranged opposite to each other, two second side surfaces (101) arranged opposite to each other, and a top surface and a bottom surface arranged opposite to each other. The semi-enclosed heat dissipation aluminum sheet body (2) has a U-shaped structure, including a bottom wall that is attached to the bottom surface of the power battery body (1) and two side walls that are attached to the two first side surfaces (102) respectively. The thermally conductive adhesive layer (3) is sandwiched between the bottom wall of the semi-enclosed heat dissipation aluminum sheet body (2) and the bottom surface of the power battery body (1) and between the side wall of the semi-enclosed heat dissipation aluminum sheet body (2) and the first side surface (102) of the power battery body (1). The semi-enclosed heat dissipation aluminum sheet body (2) is fixedly connected to the power battery body (1) through the thermally conductive adhesive layer (3).

2. The semi-enclosed heat dissipation aluminum fin structure for a power battery according to claim 1, characterized in that: The outer wall of the semi-enclosed heat dissipation aluminum sheet body (2) is integrally formed with several heat dissipation ribs (201) extending in the vertical direction, and the heat dissipation ribs (201) are arranged at intervals along the length direction of the semi-enclosed heat dissipation aluminum sheet body (2).

3. The semi-enclosed heat dissipation aluminum fin structure for a power battery according to claim 1, characterized in that: The tops of the two side walls of the semi-enclosed heat dissipation aluminum sheet body (2) are bent away from the power battery body (1) to form a buckle (202), and the buckle (202) is engaged with the top edge of the power battery body (1).

4. The semi-enclosed heat dissipation aluminum fin structure for a power battery according to claim 1, characterized in that: The bottom wall of the semi-enclosed heat dissipation aluminum sheet body (2) is integrally formed with two heat dissipation extensions (203) on the side away from the power battery body (1). The two heat dissipation extensions (203) extend outward in the horizontal direction and have the same thickness as the bottom wall thickness of the semi-enclosed heat dissipation aluminum sheet body (2).

5. The semi-enclosed heat dissipation aluminum fin structure for a power battery according to claim 1, characterized in that: The inner wall of the semi-enclosed heat dissipation aluminum sheet body (2) is coated with an insulating coating (4), the thickness of which is 0.05 to 0.1 mm.

6. The semi-enclosed heat dissipation aluminum fin structure for a power battery according to claim 1, characterized in that: The semi-enclosed heat dissipation aluminum sheet body (2) is made of aluminum alloy, and the thickness of the bottom wall and the side wall is 0.8 to 1.5 mm.

7. The semi-enclosed heat dissipation aluminum fin structure for a power battery according to claim 4, characterized in that: The heat dissipation extension (203) is bent vertically at one end away from the semi-enclosed heat dissipation aluminum sheet body (2) to form an L-shaped structure, and several heat dissipation through holes (204) are provided on the bent section.

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