Upper cover, battery pack and electric equipment

Abstract

The utility model provides an upper cover, battery pack and electric equipment, the upper cover is used for the battery pack, the upper cover comprises an upper cover body and a protective layer, the upper cover body is made of a plastic material, the protective layer is arranged on the outer surface of the upper cover body, the protective layer and the upper cover body are integrally formed, and the protective layer is arranged on the outer surface of the upper cover body. And the integrally formed upper cover is used for being matched with a tray to seal the battery pack. According to the scheme, the protective layer of the upper cover is made of metal or glass fibers, the upper cover can be comprehensively protected, the corners of the upper cover can be locally protected, and the sealing shell of the battery pack can be effectively prevented from being bitten and damaged by rats.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to an upper cover for a battery. Background Art

[0002] In the prior art, the upper cover of a battery pack is mostly made of plastic material, which cannot prevent rats from biting and damaging. When rats bite such a battery pack, the battery pack will be damaged, endangering the normal use of the battery pack. Content of the Utility Model

[0003] The utility model provides an upper cover of a battery pack with a protective layer, which solves the problem that the plastic material upper cover of the battery pack cannot prevent rats from biting and damaging.

[0004] To achieve the purpose of the utility model, the following technical solutions are provided:

[0005] According to the first aspect of the utility model, an upper cover for a battery pack is provided. The upper cover includes an upper cover body and a protective layer. The upper cover body is made of plastic material. The tear resistance of the protective layer is greater than that of the upper cover body. The protective layer is arranged on the outer surface of the upper cover body. The protective layer and the upper cover body are integrally formed. The integrally formed upper cover is used to cooperate with a tray to seal the battery pack.

[0006] Optionally, the upper cover body is a sealing layer, and the protective layer is arranged on the sealing layer. The sealing layer is used to cooperate with the tray of the battery pack to seal the battery pack.

[0007] Optionally, the sealing layer is a polygonal shell, and the polygonal shell forms a plurality of corners.

[0008] Optionally, the protective layer is arranged on the entire outer surface of the sealing layer.

[0009] Optionally, the protective layer is arranged on the outer surfaces of a plurality of corners of the sealing layer.

[0010] Optionally, the material of the protective layer is a metal material or a glass fiber material.

[0011] Optionally, the sealing layer is made of plastic material, the protective layer is made of metal material, and the protective layer and the sealing layer are integrally formed by insert molding.

[0012] Optionally, the sealing layer is made of plastic material, the protective layer is made of glass fiber material, and the protective layer is sprayed on the sealing layer.

[0013] According to the second aspect of the utility model, a battery pack is provided, which includes a tray and the above-mentioned upper cover. The upper cover covers the tray to seal the battery pack.

[0014] According to the third aspect of the utility model, an electrical equipment is provided, which includes an electrical appliance and the above-mentioned battery pack. The battery pack is used to supply power to the electrical appliance.

[0015] The upper cover provided by this solution includes an upper cover body and a protective layer. The upper cover body is made of plastic material, and the protective layer is a functional material with high tear strength. This protective layer can protect the upper cover body and effectively prevent rodent animals from biting and damaging the upper cover body of the battery pack. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0017] Figure 1 is the schematic diagram of the full protection of the upper cover in the embodiment of the present utility model;

[0018] Figure 2 is the schematic diagram of the partial protection of the upper cover in the embodiment of the present utility model;

[0019] Description of the reference numerals:

[0020] Upper cover 1, sealing layer 2, protective layer 3. Specific Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0022] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0023] Unless otherwise defined, all technical and scientific terms used in this invention are the same as those commonly understood by those skilled in the technical field of the present utility model. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used in the present utility model includes any and all combinations of one or more of the related listed items.

[0024] Next, some embodiments of the present utility model will be described in detail in conjunction with the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0025] In the prior art, the upper cover of the battery pack mostly uses PP plastic material, which cannot prevent rats from biting and damaging. When rats bite this battery pack, it will cause the battery pack to be damaged, endangering the normal use of the battery pack.

[0026] Reference Figures 1 to 2 , the present utility model provides an upper cover for a battery pack. The upper cover includes an upper cover body and a protective layer. The upper cover body is made of plastic material. The tear resistance of the protective layer is greater than that of the upper cover body. The protective layer is disposed on the outer surface of the upper cover body, and the protective layer and the upper cover body are integrally formed. The integrally formed upper cover is used to cooperate with a tray to seal the battery pack.

[0027] Specifically, with the continuous expansion of markets such as new energy vehicles and intelligent devices, the requirements for battery safety and performance are also getting higher and higher. The battery upper cover 1, as an important part of the battery, its research and application will also continue to deepen. Currently, the PP material battery upper cover 1, which is lighter, thinner, and safer, has been widely used as the mainstream upper cover 1 material. The PP material battery upper cover 1 plays a crucial role in the battery packaging field by virtue of its excellent physical and chemical properties. This material not only has excellent chemical corrosion resistance and can remain stable in a complex chemical environment to ensure the safety inside the battery, but also has excellent electrical insulation properties, effectively isolating the electrical contact between the internal circuit of the battery and the external environment, reducing the risk of the battery short-circuiting or leaking electricity. In addition, with its characteristics of light weight and high strength, the PP material realizes the lightweight design of the product while ensuring the battery upper cover 1 is strong and durable, meeting the high requirements of modern electronic products for portability. It is worth mentioning that the PP material also has good processing performance and can be easily made into upper covers 1 with various complex structures and shapes through processes such as injection molding to adapt to different sizes and types of batteries. Looking ahead, with the rapid development of fields such as new energy vehicles and intelligent devices, the PP material battery upper cover 1 will continue to play its unique advantages and bring safer, more reliable, and more efficient solutions to the battery industry.

[0028] However, PP material, as a widely used plastic, although it has many excellent properties such as chemical corrosion resistance, good electrical insulation, light weight and high strength, its anti-biting ability is relatively weak when facing certain animals in nature. Especially for those rodents with strong biting force and a preference for gnawing objects, the PP material battery upper cover 1 or other PP products are easily targeted by them. Since the PP material is relatively soft and easily bitten through by the sharp teeth of rodents, this may expose the internal structure of the battery, thereby triggering potential safety hazards. Therefore, when designing and using PP material products, especially in situations where animal damage needs to be prevented, we need to take additional protective measures, such as adding a metal protective layer 3, using an anti-biting coating, etc., to ensure the integrity and safety of the product.

[0029] This solution provides an innovatively designed upper cover 1 for the battery pack, focusing on solving the problem of rodent bites and ensuring the safe operation of the battery pack. The upper cover 1 consists of two key parts: the upper cover body and the protective layer 3.

[0030] The upper cover body is made of plastic material. This choice is based on the excellent plasticity, processability, and electrical insulation properties of the plastic material. The plastic material is easy to process into various shapes, can closely fit the size and structure of the battery pack, and can also effectively isolate the internal circuit of the battery pack from the external environment, ensuring the safety of the battery pack during use.

[0031] However, the upper cover 1 made solely of plastic material may be inadequate when faced with rodent bites. For this reason, a protective layer 3 is provided on the outer surface of the upper cover body. The key characteristic of this protective layer 3 is that its tear resistance strength is much greater than that of the upper cover body. It is made of a special material that has been carefully selected and designed to withstand the strong biting force of rodents without being easily broken or damaged.

[0032] More importantly, the protective layer 3 and the upper cover body are manufactured using an integrated molding technology. This technology ensures a tight combination between the protective layer 3 and the upper cover body, forming a solid whole. Through integrated molding, the protective layer 3 not only provides additional tear resistance strength but also avoids potential safety hazards caused by gaps between the protective layer 3 and the upper cover body.

[0033] In practical applications, the upper cover 1 of this solution closely cooperates with the tray of the battery pack, forming a solid barrier. Through a sealing design, the internal circuit of the battery pack is effectively isolated and protected. Even in the face of the threat of rodent bites, the protective layer 3 can play an effective defensive role, protecting the internal circuit of the battery pack from being damaged.

[0034] In summary, the upper cover 1 of the battery pack provided by this solution successfully solves the problem of rodent bites by using plastic material and a protective layer 3 with high tear resistance strength, and combining integrated molding technology. This design not only enhances the overall strength of the upper cover 1 but also improves the safety of the battery pack, providing more reliable protection for users.

[0035] In one embodiment, the upper cover body is a sealing layer, and the protective layer is provided on top of the sealing layer. The sealing layer is used to cooperate with the tray of the battery pack to seal the battery pack.

[0036] Specifically, in the design of the battery pack, the process implementation method of the upper cover 1 is crucial for ensuring the sealing and safety of the battery pack. For the upper cover 1 made of PP material, its unique process implementation method ensures a tight fit with the battery pack tray, forming an effective sealing layer 2, and then a protective layer 3 is provided on top, providing double protection for the battery pack.

[0037] First, the manufacturing of the sealing layer 2 is a crucial step. The PP material is precisely molded into a shape that matches the battery pack tray through a precise injection molding process. During the injection molding process, by precisely controlling parameters such as temperature, pressure, and speed, it is ensured that the PP material fully flows and closely adheres to the tray, thereby forming a uniform sealing layer 2. This sealing layer 2 can not only effectively prevent the leakage of electrolyte but also isolate the interference of the external environment on the interior of the battery pack.

[0038] Next, a protective layer 3 is provided on top of the sealing layer 2. The protective layer 3 is usually made of wear-resistant and corrosion-resistant materials and is integrally formed with the sealing layer 2 by spraying, hot pressing, or injection molding. The setting of the protective layer 3 further enhances the protection ability of the battery pack, enabling it to resist the erosion of external physical and chemical factors. At the same time, the protective layer 3 can also play a buffering role, reducing the impact of external shocks on the interior of the battery pack.

[0039] This process implementation method brings significant benefits. First, the tight fit between the sealing layer 2 and the tray ensures the sealing of the battery pack, effectively preventing the leakage of electrolyte and the interference of the external environment on the interior of the battery pack. Second, the setting of the protective layer 3 further enhances the protection ability of the battery pack, improving its durability and reliability, especially avoiding the risk of being bitten and damaged by rodents in a specific environment. Finally, this process implementation method also ensures the safety of the battery pack, reducing the risk of safety accidents caused by the damage of the battery pack. Therefore, this process implementation method has important application value in the design of battery packs.

[0040] In one embodiment, the sealing layer is a polygonal shell, and the polygonal shell forms multiple corners.

[0041] Specifically, the sealing layer 2 of the upper cover 1 is ingeniously constructed as a polygonal shell. This polygonal shell not only has a unique structure but also has significant advantages in terms of function. The design of the polygonal shell means that it has multiple corners, and these corners play a crucial role in the overall structure of the sealing layer 2.

[0042] The shape of the polygonal shell can cooperate more effectively with the tray. Especially at the edge part, its shape design enables the sealing layer 2 to closely adhere to the contour of the tray, greatly reducing potential gaps and voids. This tight-fitting design not only improves the sealing performance of the battery pack but also prevents harmful substances such as external moisture and dust from invading the interior of the battery pack, thereby ensuring the safe and stable operation of the battery pack.

[0043] In addition, the corner structures of the polygonal housing also play an important role in the sealing process. These corners can withstand external pressure and enhance the stability and durability of the sealing layer 2 by dispersing the pressure. Compared with the traditional flat sealing layer 2, the corner design of the polygonal housing enables it to better resist external impacts and vibrations, further improving the safety and reliability of the battery pack.

[0044] At the same time, the design of the polygonal housing also makes the upper cover 1 more layered and three-dimensional visually, enhancing the overall aesthetic appearance of the battery pack. This design not only conforms to the modern aesthetic trend but also increases the user's favorability and satisfaction with the product.

[0045] In summary, the design of the polygonal housing as the sealing layer 2 shows remarkable effects in the battery pack. It not only improves the sealing performance of the battery pack, ensures the safe and stable operation of the battery pack, but also enhances the structural strength of the sealing layer 2, improving the durability and stability of the battery pack. At the same time, the design of the polygonal housing also makes the battery pack more aesthetically pleasing visually, bringing a better user experience.

[0046] In one embodiment, the protective layer 3 is provided on the entire outer surface of the sealing layer 2.

[0047] Specifically, in the battery pack design, an advanced embodiment is reflected in the unique combination of the protective layer 3 of the upper cover 1 and the sealing layer 2. Specifically, the protective layer 3 is carefully provided on the entire outer surface of the sealing layer 2 to form a comprehensively covering protective layer.

[0048] In terms of process implementation, first, through an accurate injection molding process, the PP material is molded into a shape matching the battery pack tray to form a uniform sealing layer 2. The design of the sealing layer 2 ensures a tight fit with the tray, effectively preventing electrolyte leakage and external environmental interference. Next, after the sealing layer 2 is completely cured and reaches the specified strength, the protective layer 3 starts to be constructed. The material of the protective layer 3 is usually selected as a high-strength and wear-resistant material, such as nylon or polycarbonate, etc., and these materials can effectively resist the biting force of rodents.

[0049] In the implementation of the protective layer 3, we adopt an advanced integrated molding technology to ensure a tight combination between the protective layer 3 and the sealing layer 2. It does not need to be fixed through bolts, adhesives, and specific clamping structures, but through accurate spraying, hot pressing, insert injection molding, etc. processes, the material of the protective layer 3 is uniformly integrated onto the entire outer surface of the sealing layer 2 to form a solid protective barrier. This combination method not only enhances the protection ability of the battery pack but also ensures the sealing and safety of the battery pack.

[0050] Effectively, the combination of the protective layer 3 and the sealing layer 2 significantly improves the durability and reliability of the battery pack. The comprehensive coverage of the protective layer 3 effectively resists external physical and chemical erosion, especially in special environments such as the wild or a garage, preventing the battery pack from being bitten and damaged by rodents.

[0051] The main purpose of this case is to prevent the battery pack from being bitten and damaged by rodents in special environments through a unique combination of the protective layer 3 and the sealing layer 2. This design not only ensures the safety and reliability of the battery pack but also improves its applicability in various environments, providing broader possibilities for the application of the battery pack.

[0052] In one embodiment, the protective layer 3 is disposed on the outer surfaces of multiple corners of the sealing layer 2.

[0053] Specifically, for the process scheme of setting the protective layer 3 of the battery pack, we have carried out in-depth expansion and effect comparison. In the application of the protective layer 3, in addition to the traditional method of setting it on the entire surface of the sealing layer 2, we have proposed an optimized scheme: mainly setting the protective layer 3 on the outer surfaces of multiple corners of the sealing layer 2. This scheme is proposed based on the careful observation and analysis of the biting behavior of rodents.

[0054] In practical applications, we have found that the damage to the battery pack by rodents mainly focuses on the corner positions of the sealing layer 2. These corners are often the main targets for rodents to bite because they are relatively weak and provide an easy entry point. Therefore, setting the protective layer 3 mainly on these corners can more effectively prevent the damage behavior of rodents and protect the safety and integrity of the battery pack.

[0055] Compared with the traditional full-surface protective layer 3, the corner protective layer 3 scheme is more material-saving in material use, reducing costs. At the same time, since the corners are the main areas attacked by rodents, this locally strengthened design can more effectively prevent rodent damage. In addition, the setting of the corner protective layer 3 can also simplify the production process to a certain extent and improve production efficiency.

[0056] However, this scheme also has certain limitations. Since the protective layer 3 is only set at the corners, other parts of the battery pack may still be attacked by rodents. Therefore, in practical applications, we need to comprehensively evaluate and select a suitable protection scheme in combination with the specific use environment of the battery pack and the rodent activity situation.

[0057] In summary, the corner protective layer 3 scheme has significant advantages and potential in battery pack protection. By accurately positioning the protection area, we can ensure the protection effect while reducing material costs and production difficulties, providing a more economical and effective guarantee for the safe use of the battery pack.

[0058] In one embodiment, the material of the protective layer 3 is a metal material or a fiberglass material.

[0059] Specifically, when implementing the battery pack protective layer 3 solution, the material selection is crucial for the protection effect and cost control. Based on the above information, we can conduct an extended comparison between the metal material and the fiberglass material and analyze their respective implementation effects.

[0060] First of all, as a traditional material for the protective layer 3, the metal material has excellent strength and durability. It can effectively resist the biting and damage of rodents and provide reliable protection for the battery pack. The metal protective layer 3 also has good thermal stability and electrical insulation properties, ensuring the safe use of the battery pack in various environments. However, the metal material also has some disadvantages, such as relatively large weight, high cost, and relatively high processing difficulty. These factors may limit the use of the metal protective layer 3 in certain specific application scenarios.

[0061] In contrast, as a lightweight and high-strength material, the fiberglass material has broad application prospects in the field of the battery pack protective layer 3. The fiberglass protective layer 3 not only has high strength and bite resistance, but also is lightweight and low-cost. This makes the fiberglass protective layer 3 more advantageous in terms of cost-effectiveness. In addition, the fiberglass material also has good insulation properties and chemical stability, and can adapt to various complex use environments. However, it should be noted that fiberglass may require special processes and equipment during processing, which may increase the production difficulty to a certain extent.

[0062] Taking everything into consideration, the metal material and the fiberglass material each have their own advantages and disadvantages in the battery pack protective layer 3. The metal material is superior in terms of protection effect due to its excellent strength and durability, but it has a high cost and a relatively large weight. The fiberglass material, on the other hand, has obvious advantages in terms of cost-effectiveness and lightweight, but attention needs to be paid to its processing difficulty and special requirements. In actual applications, we can choose the appropriate material for the protective layer 3 according to specific needs and scenarios to achieve the best protection effect and economic benefits.

[0063] In one embodiment, the sealing layer 2 is made of a plastic material, the protective layer 3 is made of a metal material, and the protective layer 3 and the sealing layer 2 are integrally molded by insert molding.

[0064] Specifically, regarding the combination method of the battery pack protective layer 3 and the sealing layer 2, according to the different selected materials, we can adopt two different processes: insert molding or spraying. The following is a detailed expansion and effect analysis of these two processes.

[0065] When the protective layer 3 is made of metal, we recommend using the insert molding process to combine the protective layer 3 with the sealing layer 2. Insert molding is a molding technology that embeds a prefabricated metal part into a plastic matrix. In this process, the metal protective layer 3 is first accurately positioned and fixed in the mold, and then the plastic sealing layer 2 material is injected into the mold to form around the metal protective layer 3. In this way, the metal protective layer 3 is firmly embedded in the plastic sealing layer 2 to form an integral structure.

[0066] The advantages of this insert molding process are that the combination between the metal protective layer 3 and the plastic sealing layer 2 is tight and stable, and it is not easy to fall off or shift. At the same time, since the metal protective layer 3 is directly embedded in the plastic layer, it can effectively resist external impacts and rodent bites, protecting the safety of the battery pack. In addition, insert molding also has good production efficiency and is suitable for large-scale production.

[0067] However, the insert molding process also has some challenges. First, the thermal expansion coefficients of the metal and plastic materials are different, which may cause stress concentration or deformation during temperature changes. Second, the mold design and manufacturing of insert molding are relatively complex and costly. Therefore, when choosing this process, factors such as material properties, production efficiency, and cost need to be considered comprehensively.

[0068] In one embodiment, the sealing layer 2 is made of plastic material, and the protective layer 3 is made of fiberglass material, and the protective layer 3 is sprayed on the sealing layer 2.

[0069] Specifically, when the protective layer 3 is made of fiberglass material, we can use the spraying process to apply the protective layer 3 on the sealing layer 2. Spraying is a method of evenly coating a liquid or powder material on the surface of a substrate through a spray gun. In this process, we can prepare the fiberglass material into a liquid or powder form suitable for spraying, and then evenly spray it on the surface of the plastic sealing layer 2 through the spray gun.

[0070] The advantages of the spraying process are simple operation and strong flexibility. It can adapt to battery packs of different shapes and sizes, and the spraying thickness can be adjusted according to needs. In addition, the fiberglass material has the characteristics of light weight and high strength, which can effectively enhance the impact resistance and bite resistance of the battery pack.

[0071] However, the spraying process also has some limitations. Due to problems such as uneven coating and difficult thickness control during the spraying process, the performance of the protective layer 3 may be unstable. In addition, the spraying process usually requires a certain curing time, which may affect the production efficiency. Therefore, when choosing the spraying process, factors such as coating quality, production efficiency, and operating environment need to be concerned.

[0072] According to another embodiment of the present application, a battery pack is provided, including a tray and the above-mentioned upper cover, and the upper cover is covered on the tray to seal the battery pack.

[0073] Specifically, we have successfully launched a unique battery pack that integrates an optimized upper cover 1 and a tray structure. By implementing an innovative design with a protective layer 3 on the upper cover 1, the risk of the battery pack being bitten and damaged by rodents in a special environment is effectively avoided.

[0074] The design of this battery pack fully reflects an in-depth understanding and precise control of the actual application scenarios. We know that rodents often bite the edges and corners of the battery pack, which may not only damage the battery cells inside the battery pack but also cause the seal of the battery pack to fail, leading to serious safety hazards. To solve this problem, we have specifically designed a protective layer 3 on the upper cover 1 of the battery pack, and this innovative measure significantly enhances the protective performance of the battery pack.

[0075] The setting of the protective layer 3 is not arbitrary but is the result of precise planning and consideration. We have selected materials with excellent bite resistance, such as metal or fiberglass, which can effectively resist the biting of rodents and ensure the safety of the battery pack. At the same time, we have mainly set the protective layer 3 at the corners and edges of the upper cover 1, which are the main areas where rodents bite. By strengthening the protection at these key positions, we can minimize the damage caused by rodent bites to the battery pack.

[0076] In terms of implementation effects, this battery pack with a protective layer 3 has shown significant advantages in actual applications. Even in a harsh environment with rodents and other animals, the battery pack can maintain its good sealing performance and structural stability, effectively avoiding the risk of being bitten and damaged by rodents. This not only ensures the safe and stable operation of the battery cells but also extends the service life of the battery pack and reduces the maintenance cost.

[0077] In addition, this battery pack also has a wide range of application prospects. Whether in electric vehicles, energy storage systems, or other fields that require high-performance battery packs, it can exert excellent protective performance and reliability, providing users with a safer and more efficient battery solution.

[0078] In summary, this embodiment of the present application has successfully improved the protective performance of the battery pack by implementing the design of the upper cover 1 with a protective layer 3, avoiding the risk of the battery pack being bitten and damaged by rodents in a special environment. This innovative design not only reflects our in-depth research and continuous innovation on the safety performance of the battery pack but also brings users a more reliable and efficient battery usage experience.

[0079] According to another embodiment of the present application, an electrical device is provided, including an electrical appliance and the above-mentioned battery pack, and the battery pack is used to supply power to the electrical appliance.

[0080] Specifically, the core structure of the battery pack includes an upper cover 1 and a tray, which are closely combined to form a complete sealing system. This design not only ensures the sealing performance of the battery pack but also improves its structural stability. More notably, the upper cover 1 adopts an innovative design with a protective layer 3, and the protective layer 3 is made of a material with excellent bite resistance, which can effectively resist the biting of rodents. This innovative design greatly reduces the risk of the battery pack being damaged by rodents in special environments, thus ensuring the safety and stable operation of the battery cells inside the battery pack.

[0081] In terms of effects, this battery pack with the protective layer 3 shows significant superiority in practical applications. Even in harsh environments where rodents and other animals frequently appear, the battery pack can maintain its original sealing performance and integrity, effectively avoiding safety risks such as battery leakage and damage caused by animal bites. At the same time, this battery pack also has a long service life and high reliability, and can meet the application requirements in various complex scenarios.

[0082] In summary, this embodiment of the present application successfully improves the safety performance and durability of the battery pack by implementing the design of the upper cover 1 with the protective layer 3, providing a solid guarantee for the application of the battery pack in special environments. This innovative design not only enhances the protection ability of the battery pack but also improves its reliability and stability in practical applications.

[0083] The present utility model provides an upper cover, and this upper cover 1 includes an upper cover body and a protective layer 3. The upper cover body is made of plastic material, and the protective layer 3 is a functional material with high tear resistance. The protective layer 3 can protect the upper cover body and effectively prevent rodents from biting and damaging the upper cover body of the battery pack.

[0084] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0085] What is disclosed above is only a preferred embodiment of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A top cover for a battery pack, characterized in that: The upper cover includes an upper cover body and a protective layer. The upper cover body is made of plastic material. The tear resistance of the protective layer is greater than that of the upper cover body. The protective layer is arranged on the outer surface of the upper cover body. The protective layer and the upper cover body are integrally formed. The integrally formed upper cover is used to cooperate with the tray to seal the battery pack.

2. The upper cover according to claim 1, characterized in that: The upper cover body is a sealing layer, the protective layer is arranged on the sealing layer, and the sealing layer is used to cooperate with the tray of the battery pack to seal the battery pack.

3. The upper cover according to claim 2, characterized in that: The sealing layer is a polygonal shell having a plurality of corners.

4. The upper cover according to claim 2, characterized in that: The protective layer is arranged on the entire outer surface of the sealing layer.

5. The upper cover according to claim 2, characterized in that: The protective layer is arranged on the outer surface of multiple corners of the sealing layer.

6. The upper cover according to claim 2, characterized in that: The material of the protective layer is metal or glass fiber.

7. The upper cover according to any one of claims 2 and 6, characterized in that: The sealing layer is made of plastic material, the protective layer is made of metal material, and the protective layer and the sealing layer are combined by insert molding.

8. The upper cover according to any one of claims 2 and 6, characterized in that: The sealing layer is made of plastic material, the protective layer is made of glass fiber material, and the protective layer is sprayed on the sealing layer.

9. A battery pack, characterized in that: It comprises a tray and the upper cover according to any one of claims 1 to 8, wherein the upper cover is covered on the tray to seal the battery pack.

10. An electrical device, characterized in that: It comprises an electrical appliance and the battery pack according to claim 9, wherein the battery pack is used to supply power to the electrical appliance.

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