Battery heat dissipation cover plate

Abstract

The utility model discloses a battery heat dissipation cover plate which comprises a base, a cover plate is arranged above the base, and an accommodating cavity is arranged between the base and the cover plate; a rectangular mounting groove communicating with the containing cavity is formed in the upper portion of the cover plate, and a heat dissipation plate is fixedly mounted in the rectangular mounting groove. A fixing hole is formed in one end of the cover plate, and an air cooling assembly is installed in the fixing hole. According to the utility model, the rectangular mounting groove is formed above the cover plate, and the heat dissipation plate is fixedly mounted in the rectangular mounting groove, so that the heat dissipation area of the battery pack is increased, and the heat dissipation efficiency is improved; heat conduction sheets vertically arranged in the heat dissipation plate and three-edged heat dissipation holes formed by the heat conduction sheets further enhance conduction and dissipation of heat, and heat accumulated in the battery pack can be quickly discharged; the air cooling assembly is mounted in the fixing hole formed in one end of the cover plate, so that heat generated by the battery pack is more effectively taken away, the internal temperature of the battery is reduced, and the overall performance and safety of the battery system are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a battery heat dissipation cover plate. Background Art

[0002] With the rapid rise of the new energy vehicle industry, cylindrical lithium batteries have received more and more extensive attention and application due to their high energy density, good consistency, and mature technical characteristics. In pure electric vehicles, new energy batteries are the core components that provide the main power. To protect this core component, the battery pack is usually installed in a special base box and closed with a cover plate for protection.

[0003] However, with the continuous improvement of the energy density of cylindrical lithium batteries for electric vehicles, higher requirements are put forward for the efficiency and energy saving of the power battery thermal management system to ensure the performance, service life, and safety of the battery pack. In practical applications, hundreds of single cells are stacked into a battery system. However, during the rapid charging (i.e., high-current charging) process, a large amount of heat will quickly accumulate inside the battery and is difficult to dissipate quickly. This heat accumulation will not only cause the internal temperature of the battery to be too high, exacerbate the electrochemical side reactions, and seriously affect the cycle life of the battery, but also may pose a great safety hazard to the vehicle and users.

[0004] Therefore, aiming at the problems existing in the prior art, the utility model proposes an innovative design of a battery heat dissipation cover plate in order to effectively solve the battery heat dissipation problem and improve the overall performance and safety of the battery system. Summary of the Invention

[0005] The purpose of the utility model is to provide a battery heat dissipation cover plate to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A battery heat dissipation cover plate includes a base; a cover plate is arranged above the base, and the cover plate and the base are detachably connected; a receiving cavity is arranged between the base and the cover plate, and a battery pack is fixedly installed in the receiving cavity; a rectangular installation groove communicating with the receiving cavity is opened above the cover plate, and a heat dissipation plate is fixedly installed in the rectangular installation groove; a fixing hole is opened at one end of the cover plate, and an air-cooling component is installed in the fixing hole.

[0008] Preferably, the air-cooling component includes a fixing seat. A heat-conducting aluminum plate is arranged on one side of the fixing seat close to the receiving cavity, and a plurality of heat dissipation fins are arranged on the heat-conducting aluminum plate; a heat dissipation fan is arranged on the side of the fixing seat away from the receiving cavity, and the air inlet end of the heat dissipation fan is arranged at the front end of the heat dissipation fins.

[0009] Preferably, positioning buckles are respectively provided at the upper and lower ends of the fixing base, wherein the positioning buckles are adapted to the positioning slots provided on the inner wall of the fixing hole for installing the fixing base in the fixing hole.

[0010] Preferably, a plurality of heat conducting sheets are vertically arranged in the heat dissipation plate, wherein the side edges of the heat conducting sheets are sequentially spliced to form a triangular prism heat dissipation hole, and the lower end of the triangular prism heat dissipation hole communicates with the accommodating cavity.

[0011] Preferably, the heat conducting sheet is made of graphite material, and the thickness of the heat conducting sheet is 300-500 μm.

[0012] Preferably, a dust-proof net is provided above the heat dissipation plate, and the periphery of the dust-proof net is fixedly connected to the cover plate by bolts.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: by providing a rectangular installation groove above the cover plate and fixedly installing a heat dissipation plate therein, the heat dissipation area of the battery pack is increased, and the heat dissipation efficiency is improved; the vertically arranged heat conducting sheets in the heat dissipation plate and the formed triangular prism heat dissipation holes further enhance the heat conduction and dissipation, which helps to quickly discharge the heat accumulated inside the battery pack; by installing an air-cooling component in the fixing hole provided at one end of the cover plate, this design enables the cooling fan on the air-cooling component to directly direct the air flow to the heat dissipation fins and the heat conducting aluminum plate, thereby more effectively taking away the heat generated by the battery pack, reducing the internal temperature of the battery, reducing the occurrence of electrochemical side reactions, and prolonging the battery cycle life; the cover plate and the base are detachably connected, making the installation, maintenance, and replacement of the battery pack more convenient; at the same time, the air-cooling component is adapted to the positioning slots on the inner wall of the fixing hole through the positioning buckles, realizing quick installation and disassembly, and improving the maintenance efficiency; a dust-proof net is provided above the heat dissipation plate, effectively preventing dust and impurities from entering the heat dissipation system, ensuring the durability and stability of the heat dissipation effect, and at the same time prolonging the service life of the heat dissipation component, effectively solving the battery heat dissipation problem proposed in the background technology, and improving the overall performance and safety of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is an exploded schematic structural diagram of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the heat dissipation plate of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the air-cooling component of the present utility model.

[0018] Wherein: 1. Base; 2. Cover plate; 3. Accommodation cavity; 4. Battery pack; 5. Rectangular installation groove; 6. Heat dissipation plate; 7. Fixing hole; 8. Air cooling component; 801. Fixing seat; 802. Heat-conducting aluminum plate; 803. Heat dissipation fins; 804. Heat dissipation fan; 9. Positioning buckle; 10. Heat-conducting sheet; 11. Triangular heat dissipation holes; 12. Dust-proof net. Specific implementation mode

[0019] The following further describes the present utility model in detail with reference to the drawings.

[0020] Please refer to Figures 1 to 4 , to achieve the above object, the present utility model provides the following technical solutions:

[0021] A battery heat dissipation cover plate includes a base 1, and a cover plate 2 is arranged above the base 1, wherein the cover plate 2 and the base 1 are detachably connected; an accommodation cavity 3 is arranged between the base 1 and the cover plate 2, and a battery pack 4 is fixedly installed in the accommodation cavity 3; a rectangular installation groove 5 communicating with the accommodation cavity 3 is opened above the cover plate 2, and a heat dissipation plate 6 is fixedly installed in the rectangular installation groove 5, and the heat dissipation plate 6 is used to increase the heat dissipation area; a fixing hole 7 is opened at one end of the cover plate 2, and an air cooling component 8 is installed in the fixing hole 7.

[0022] When the battery pack 4 is working, a large amount of heat will be generated. These heats are first conducted to the cover plate 2 through the contact between the battery pack 4 and the accommodation cavity 3; at this time, the heat dissipation plate 6 effectively conducts the heat from the battery pack 4 to the surface of the heat dissipation plate 6 through its large-area surface and internal heat-conducting structure, and dissipates it into the air; at the same time, the air cooling component 8 starts to work, and the heat dissipation fan 804 sucks in external air and takes away the heat through the heat dissipation fins 803 and the heat-conducting aluminum plate 802, further enhancing the heat dissipation effect and effectively solving the heat dissipation problem of the battery pack 4 during the working process; since the cover plate 2 and the base 1 are detachably connected, when it is necessary to maintain or replace the battery pack 4, the cover plate 2 can be conveniently opened to perform necessary operations on the battery pack 4.

[0023] Please refer to Figure 4 , as an embodiment of the present utility model, the air cooling component 8 includes a fixing seat 801, a heat-conducting aluminum plate 802 is arranged on one side of the fixing seat 801 close to the accommodation cavity 3, and a plurality of heat dissipation fins 803 are arranged on the heat-conducting aluminum plate 802; a heat dissipation fan 804 is arranged on the side of the fixing seat 801 away from the accommodation cavity 3, and the air inlet end of the heat dissipation fan 804 is arranged at the front end of the heat dissipation fins 803.

[0024] In the above-described solution, the fixed seat 801 serves as the support structure of the entire air-cooling assembly 8. A heat-conducting aluminum plate 802 is installed on the side of the fixed seat 801 close to the accommodation cavity 3. The heat-conducting aluminum plate 802 has good heat-conducting performance and can effectively conduct the heat generated by the battery pack 4. By providing a number of heat-dissipating fins 803 on the heat-conducting aluminum plate 802, the heat-dissipating fins 803 increase the surface area of the heat-conducting aluminum plate 802, enabling more heat to be dissipated into the air. On the side of the fixed seat 801 away from the accommodation cavity 3, a cooling fan 804 is installed. The cooling fan 804 is responsible for sucking in external air and taking away the heat through the heat-dissipating fins 803 and the heat-conducting aluminum plate 802.

[0025] Further, when the battery pack 4 is working and generating heat, this heat is first conducted to the heat-conducting aluminum plate 802 through the accommodation cavity 3 and the cover plate 2. The heat-conducting aluminum plate 802 quickly conducts the heat to the heat-dissipating fins 803 on its surface. The heat-dissipating fins 803 dissipate more heat into the air by increasing the surface area. At the same time, the cooling fan 804 starts to work. It sucks in external air and takes away the heat through the front end of the heat-dissipating fins 803. The air flow generated by the cooling fan 804 can effectively pass through the gaps between the heat-dissipating fins 803, taking away more heat. The cooled air then exits from the air outlet of the air-cooling assembly 8, and the heat is effectively dissipated into the external environment, effectively enhancing the heat-dissipating effect of the cover plate 2, thereby maintaining the normal working temperature of the battery pack 4, extending its service life, and improving safety.

[0026] Please refer to Figure 4 , as an embodiment of the present utility model, positioning buckles 9 are respectively provided at the upper and lower ends of the fixed seat 801. The positioning buckles 9 are adapted to positioning slots (not shown in the figure) provided on the inner wall of the fixing holes 7 for installing the fixed seat 801 in the fixing holes 7.

[0027] In the above-described solution, positioning buckles 9 are respectively provided at the upper and lower ends of the fixed seat 801. When it is necessary to install the air-cooling assembly 8 on the cover plate 2, only need to align the fixed seat 801 with the fixing holes 7, and then snap the positioning buckles 9 into the corresponding positioning slots. The positioning buckles 9 adopt a snap-fastener design, which has good elasticity and stability. When the positioning buckles 9 are snapped into the positioning slots, they will generate a certain fastening force to firmly fix the fixed seat 801 in the fixing holes 7, preventing it from loosening or falling off during the working process. At the same time, the design of the positioning buckles 9 also makes the disassembly process very simple. When it is necessary to disassemble the air-cooling assembly 8, just press the positioning buckles 9 gently to take them out of the positioning slots. Since the fixed seat 801 is installed on the cover plate 2 through the positioning buckles, when it is necessary to maintain or replace the air-cooling assembly 8, it can be very conveniently disassembled.

[0028] Please refer toFigure 3 As an embodiment of the present utility model, a plurality of heat conducting sheets 10 are vertically arranged in the heat dissipation plate 6, wherein the side edges of the heat conducting sheets 10 are sequentially spliced to form a triangular prism heat dissipation hole 11, and the lower end of the triangular prism heat dissipation hole 11 is communicated with the accommodating cavity 3.

[0029] In the above-mentioned solution, the heat dissipation plate 6 is an important part of the cover plate 2. By vertically arranging a plurality of heat conducting sheets 10 inside the heat dissipation plate 6, the side edges of the heat conducting sheets 10 are carefully designed and sequentially spliced together to form a plurality of triangular prism heat dissipation holes 11; the lower end of the triangular prism heat dissipation hole 11 of the heat dissipation hole is communicated with the accommodating cavity, so that the heat generated by the battery pack can be smoothly conducted to the heat dissipation plate 6 and dissipated through the triangular prism heat dissipation holes 11.

[0030] Furthermore, when the battery pack 4 is working, a large amount of heat will be generated. These heats are first conducted to the heat dissipation plate 6 through the accommodating cavity 3 and the cover plate 2, so that the heat conducting sheets 10 quickly conduct the heat from the surface of the heat dissipation plate 6 to the inside thereof, and dissipate the heat to the air through the triangular prism heat dissipation holes 11; the design of the triangular prism heat dissipation holes 11 increases the heat dissipation area, enabling more heat to be dissipated; at the same time, the shape and arrangement of the triangular prism heat dissipation holes 11 also optimize the air flow path and improve the heat dissipation efficiency; by optimizing the heat dissipation path and increasing the heat dissipation area, the heat generated by the battery pack 4 is effectively dissipated, maintaining the normal working temperature of the battery pack 4, extending its service life and improving safety.

[0031] Please refer to Figure 4 As an embodiment of the present utility model, the heat conducting sheet 10 is made of graphite material, and the thickness of the heat conducting sheet 10 is 300 - 500 μm.

[0032] In the above-mentioned solution, the heat conducting sheet 10 is a key component of the heat dissipation plate 6, and the selection of its material is crucial. In this embodiment, the heat conducting sheet 10 is made of graphite material. As a material with excellent heat conduction performance, graphite can effectively conduct the heat from the battery pack 4 to the heat dissipation plate 6 and quickly dissipate the heat; graphite material also has good stability and corrosion resistance, and can maintain stable heat conduction performance in a harsh working environment; the thickness of the heat conducting sheet 10 is also one of the important factors affecting its heat conduction performance. In this embodiment, the thickness of the heat conducting sheet 10 is precisely controlled between 300 - 500 μm. This thickness range not only ensures that the heat conducting sheet 10 has sufficient strength and stability, but also ensures that heat can be effectively conducted from the battery pack 4 to the heat dissipation plate 6; if the heat conducting sheet 10 is too thick, the thermal resistance will increase and the heat conduction performance will be reduced; if the heat conducting sheet 10 is too thin, it may not be able to withstand the heat generated by the battery pack 4, resulting in deformation or damage of the heat conducting sheet 10.

[0033] When the battery pack 4 is working and generating heat, this heat is first conducted through the accommodating cavity 3 to the heat conducting sheet 10; the heat conducting sheet 10 quickly conducts the heat from the battery pack 4 to its surface and dissipates the heat into the air through the triangular heat dissipation holes 11; the heat conducting sheet 10 is made of graphite material with a thickness of 400 μm, enabling the heat conducting sheet 10 to effectively conduct and dissipate the heat, maintaining the normal working temperature of the battery pack 4 and extending its service life.

[0034] Please refer to Figure 2 , as an embodiment of the present utility model, a dust-proof net 12 is provided above the heat dissipation plate 6, and the periphery of the dust-proof net 12 is fixedly connected to the cover plate 2 by bolts.

[0035] In the above-described solution, the dust-proof net 12 is designed to be installed above the heat dissipation plate 6, and its main function is to prevent dust and impurities from entering the heat dissipation system and keep the heat dissipation plate 6 and the internal heat dissipation structure clean; the periphery of the dust-proof net 12 is fixedly connected to the cover plate 2 by bolts, and this connection method ensures the stability of the dust-proof net 12 and prevents it from loosening or falling off during operation; when the battery pack 4 is working and generating heat, the heat dissipation plate 6 starts to dissipate heat; at this time, the dust-proof net 12 plays a key role in blocking dust and impurities in the external environment and preventing them from entering the heat dissipation plate 6 and the heat dissipation structure; through the filtering effect of the dust-proof net 12, the cleanliness inside the heat dissipation system is guaranteed, thereby extending the service life of the heat dissipation plate 6 and other heat dissipation components.

[0036] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present utility model is defined by the appended claims. Without departing from the principles and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A battery heat dissipation cover plate, comprising a base (1); characterized in that: A cover plate (2) is provided above the base (1), wherein the cover plate (2) and the base (1) are detachably connected; a receiving cavity (3) is provided between the base (1) and the cover plate (2), wherein a battery pack (4) is fixedly installed in the receiving cavity (3); a rectangular installation groove (5) communicating with the receiving cavity (3) is provided above the cover plate (2), wherein a heat sink (6) is fixedly installed in the rectangular installation groove (5); a fixing hole (7) is provided at one end of the cover plate (2), wherein an air cooling component (8) is installed in the fixing hole (7).

2. A battery heat dissipation cover plate according to claim 1, characterized in that: The air cooling component (8) comprises a fixed seat (801), wherein a heat-conducting aluminum plate (802) is provided on the side of the fixed seat (801) close to the accommodating cavity (3), and a plurality of heat-dissipating fins (803) are provided on the heat-conducting aluminum plate (802); a heat-dissipating fan (804) is provided on the side of the fixed seat (801) away from the accommodating cavity (3), wherein an air inlet end of the heat-dissipating fan (804) is arranged at the front end of the heat-dissipating fins (803).

3. A battery heat dissipation cover plate according to claim 2, characterized in that: The fixing seat (801) is provided with positioning buckles (9) at the upper and lower ends respectively, wherein the positioning buckles (9) are matched with positioning slots provided on the inner wall of the fixing hole (7).

4. A battery heat dissipation cover plate according to claim 1, characterized in that: A plurality of heat conducting sheets (10) are vertically arranged in the heat dissipation plate (6), wherein the side edges of the heat conducting sheets (10) are sequentially spliced ​​to form triangular heat dissipation holes (11).

5. A battery heat dissipation cover plate according to claim 4, characterized in that: The heat conducting sheet (10) is made of graphite material, wherein the thickness of the heat conducting sheet (10) is 300-500 μm.

6. A battery heat dissipation cover plate according to claim 1, characterized in that: A dustproof net (12) is provided above the heat dissipation plate, wherein the periphery of the dustproof net (12) is fixedly connected to the cover plate (2) by bolts.

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