A high-temperature resistant composite material battery top cover

Abstract

This utility model relates to the field of battery cover plates, and more particularly to a high-temperature resistant composite material battery top cover plate, comprising a base plate, a thermally expandable metal, and a heat-insulating metal. The base plate has mounting grooves on both sides of its upper end, and a triangular-shaped thermally expandable metal is placed inside each mounting groove. Heat-insulating metal is fixed to both sides of the thermally expandable metal, and a mounting block is located in the center of the thermally expandable metal. This device can actively enhance the heat insulation performance through the deformation of the thermally expandable metal, dynamically adapting to temperature changes, improving the thermal safety and stability of the battery, and solving the problem that existing battery cover plates lack the function of optimizing heat absorption, resulting in poor heat insulation and heat dissipation effects and affecting the overall safety of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery cover plates, and in particular to a high-temperature resistant composite material battery top cover plate. Background Technology

[0002] A battery cover is a key structure used to encapsulate battery components. Typically located on the top or side of the battery, its main functions are to seal the battery interior, secure electrode connections (such as terminals), and provide safety protection. Its design usually includes a cover body made of metal or composite materials, integrating explosion-proof valves, electrolyte injection holes, and terminal insulation sealing structures to address internal pressure changes and thermal runaway risks during battery charging and discharging. Some covers also incorporate temperature or pressure sensors for intelligent monitoring. This structure requires high airtightness, corrosion resistance, and mechanical strength to ensure long-term stable battery operation, while also meeting lightweight and cost control requirements. It is widely used in power batteries, energy storage batteries, and other fields.

[0003] A search revealed patent publication number CN220672714U, which discloses a battery cover and a battery. The battery cover includes a smooth aluminum plate, a lower plastic layer, an upper plastic layer, a terminal post, another lower plastic layer, and a connecting piece. The protrusions on the terminal post assemble the upper plastic layer, the lower plastic layer, the sealing ring, the lower plastic layer, and the connecting piece onto the smooth aluminum plate. Compared to traditional riveted cover plates, this new battery cover eliminates the pressure plate, reduces the number of parts, and lowers the defect rate during manufacturing.

[0004] While existing technologies can achieve a certain degree of battery sealing effect on the battery cover surface, they have drawbacks: the lack of optimized heat absorption function in existing battery covers results in poor heat insulation and heat dissipation, affecting the overall safety of the battery. In view of this, we propose a high-temperature resistant composite material battery top cover to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a high-temperature resistant composite material battery top cover.

[0006] The technical solution of this utility model is: a high-temperature resistant composite material battery top cover plate, including a base plate, a thermal expansion metal and a heat insulation metal. The upper end of the base plate is provided with mounting grooves on both sides. The mounting grooves are provided with triangular thermal expansion metal. The heat insulation metal is fixed on both sides of the thermal expansion metal. The middle of the thermal expansion metal is provided with a mounting block.

[0007] When in use, this device uses through-hole grooves and positioning holes to fix the base plate to the battery surface, achieving a secure fit. When the temperature is too high, the heat-resistant material inside the base plate absorbs and insulates the heat. Then, the heat transmitted from the base plate heats the thermally expanding metal surface. The heated thermally expanding metal arches outward, pushing up the outer heat-insulating metal as well. Compared to a triangular shape, the arched shape increases the surface heat absorption and insulation effect, ensuring stable operation of the contacts. This device has the function of enhancing heat absorption and insulation through thermal deformation, providing excellent insulation and fixing of the battery surface position, making it highly practical.

[0008] Preferably, the mounting block surface is provided with contacts that extend through both sides. The through-type design of the contacts facilitates circuit connection and ensures that heat can be dissipated through metal conduction, thereby enhancing heat dissipation efficiency and avoiding local overheating.

[0009] Preferably, the base plate has grooves on both sides of its surface. The groove structure facilitates quick positioning and installation with other components, improves assembly efficiency, and enhances the fit and stability between the base plate and the battery.

[0010] Preferably, the base plate has positioning holes at the four corners. These positioning holes enable precise alignment and fixation, preventing displacement and ensuring that the device remains stably connected under vibration or temperature changes.

[0011] Preferably, the surface of the mounting block has mounting holes arranged in a square array. The array of mounting holes provides flexible multi-point fixing options for external connectors, adapting to different installation needs, while reducing weight and promoting air circulation and heat dissipation.

[0012] Preferably, the base plate has a through hole one in the middle and through holes two on both sides of the through hole one. The through hole design optimizes the heat flow path, accelerates heat dissipation, and balances structural stress through symmetrical layout, avoiding material fatigue caused by thermal deformation.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. This utility model actively enhances the heat insulation performance by deforming the thermally expanded metal, dynamically adapts to temperature changes, and improves the thermal safety and stability of the battery. The base plate material is also a heat-resistant metal material, which can fundamentally conduct heat and stabilize the battery surface.

[0015] II. Based on the first beneficial effect, this device achieves dynamic thermal management through an innovative combination structure of thermally expanding metal and heat-insulating metal. It actively enhances heat insulation in high-temperature environments, while the design of grooves, positioning holes, and through holes improves installation stability and heat dissipation efficiency. The optimized layout of the mounting block and contacts further ensures the reliability of the circuit connection. The overall design combines thermal protection, structural stability, and ease of installation, significantly improving its practicality.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a bottom view of the present invention;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a schematic diagram of the thermal expansion and deformation of the metal according to this utility model.

[0021] Figure label:

[0022] 1. Base plate; 2. Through hole one; 3. Insulating metal; 4. Contact; 5. Groove; 6. Positioning hole; 7. Mounting block; 8. Through hole two; 9. Thermal expansion metal; 10. Mounting groove; 11. Mounting hole. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Please see Figures 1-4 As shown, this embodiment is a high-temperature resistant composite material battery top cover plate, including a base plate 1, a thermal expansion metal 9 and a heat insulation metal 3. The upper end of the base plate 1 is provided with mounting grooves 10 on both sides. The mounting grooves 10 are provided with triangular thermal expansion metal 9 inside. The heat insulation metal 3 is fixed on both sides of the thermal expansion metal 9. The middle of the thermal expansion metal 9 is provided with a mounting block 7.

[0029] When in use, the base plate 1 can be fixed to the battery surface using the through-hole groove 5 and positioning hole 6, thus achieving a fixed effect on the battery surface. When the temperature is too high, the heat-resistant material inside the base plate 1 can first absorb and isolate the temperature. Then, the temperature transmitted from the base plate 1 will heat the surface of the thermal expansion metal 9. After being heated, the thermal expansion metal 9 will arch outward, pushing up the heat insulation metal 3 on the outer wall as well. Compared with the triangular shape, the arched shape increases the surface heat absorption and heat insulation effect, ensuring the stable operation of the contact 4. This device has the function of enhancing heat absorption and heat insulation through thermal deformation, and has a good effect on heat insulation and fixing the position of the battery surface, making it highly practical.

[0030] Example 2

[0031] Please see Figures 1-4 As shown, this embodiment further includes, based on embodiment 1, a contact 4 extending through both sides on the surface of the mounting block 7. The through-through design of the contact 4 facilitates circuit connection and ensures that heat can be dissipated through metal conduction, thereby enhancing heat dissipation efficiency and avoiding local overheating.

[0032] The base plate 1 has grooves 5 on both sides of its surface. The groove structure facilitates quick positioning and installation with other components, improves assembly efficiency, and enhances the fit and stability between the base plate 1 and the battery.

[0033] The base plate 1 has positioning holes 6 at the four corners of its surface. The positioning holes 6 enable precise alignment and fixation, prevent displacement, and ensure that the device remains stable under vibration or temperature changes.

[0034] Mounting block 7 has mounting holes 11 arranged in a square array on its surface. The array of mounting holes 11 provides flexible multi-point fixing options for external connectors, adapting to different installation needs, while reducing weight and promoting air circulation and heat dissipation.

[0035] The base plate 1 has a through hole 1 2 in the middle and through holes 2 8 on both sides of the through hole 1 2. The through hole design optimizes the heat flow path, accelerates heat dissipation, and balances structural stress through symmetrical layout to avoid material fatigue caused by thermal deformation.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-temperature resistant composite material battery top cover, comprising a base plate (1), a thermally expanding metal (9), and a heat-insulating metal (3), characterized in that: The base plate (1) has mounting grooves (10) on both sides of its upper end. The mounting grooves (10) contain triangular thermal expansion metal (9). Thermal insulation metal (3) is fixed on both sides of the thermal expansion metal (9). The thermal expansion metal (9) has a mounting block (7) in the middle.

2. The high-temperature resistant composite material battery top cover plate according to claim 1, characterized in that: The mounting block (7) has contacts (4) that extend through both sides on its surface.

3. The high-temperature resistant composite material battery top cover plate according to claim 1, characterized in that: The base plate (1) has grooves (5) on both sides of its surface.

4. The high-temperature resistant composite material battery top cover plate according to claim 1, characterized in that: The base plate (1) has positioning holes (6) at the four corners of its surface.

5. The high-temperature resistant composite material battery top cover plate according to claim 1, characterized in that: The mounting block (7) has mounting holes (11) arranged in a square array on its surface.

6. The high-temperature resistant composite material battery top cover plate according to claim 1, characterized in that: The bottom plate (1) has a through hole 1 (2) in the middle, and through holes 2 (8) are provided on both sides of the through hole 1 (2).

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