Battery device and electric equipment

Abstract

The utility model is applicable to the technical field of battery devices, and provides a battery device and electric equipment, the battery device comprises a shell part, and the shell part is used as an appearance part of the battery device. The shell part comprises a base body and a protective layer structure. The base body has a first outer surface facing an external environment of the battery device. The protective layer structure is arranged on the first outer surface. The protection layer structure comprises a heat insulation layer, a reflection layer and a pigment layer. The heat insulation layer is arranged on the first outer surface. The reflecting layer is arranged on the side, away from the first outer surface, of the heat insulation layer and used for reflecting infrared radiation and transmitting visible light. The pigment layer is arranged between the heat insulation layer and the reflection layer. The heat insulation layer obstructs heat transmission and reduces the influence of high temperature or low temperature of the external environment on the shell part and the interior of the shell part. The pigment layer colors the first outer surface. The reflecting layer reflects infrared light radiation to the external environment, the probability that heat radiation of infrared light is transmitted to the pigment layer is reduced, the probability that the pigment layer is decomposed due to the heat effect of the infrared light is reduced, and the color changing probability of the pigment layer is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery device production, and in particular to a battery device and electrical equipment. Background Art

[0002] With the development of battery device technology, battery devices have been widely used in various fields such as electric vehicles, energy storage power systems, aerospace, etc., providing power for electrical equipment in various fields.

[0003] Many electrical devices need to be used outdoors frequently, which means that battery devices need to be exposed outdoors for a long time. Therefore, improving the performance of battery devices in open-air environments has become an issue that the industry is paying close attention to. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a battery device and an electrical device to improve the performance of the battery device in an open air environment.

[0005] In a first aspect, an embodiment of the present application provides a battery device, including a shell portion, the shell portion serving as an appearance component of the battery device, the shell portion including:

[0006] a substrate having a first outer surface facing an external environment of the battery device;

[0007] a protective layer structure, the protective layer structure being disposed on the first outer surface;

[0008] The protective layer structure comprises:

[0009] a heat-insulating layer, provided on the first outer surface;

[0010] a reflective layer, disposed on a side of the heat-insulating layer away from the first outer surface, the reflective layer being configured to reflect infrared radiation and transmit visible light;

[0011] The pigment layer is arranged between the heat-insulating layer and the reflecting layer.

[0012] In the above technical solution, the thermal insulation layer is used to block the spread of heat as much as possible, reduce the impact of high or low temperatures in the external environment on the shell and components such as the battery cells located inside the shell, and block external heat from being transferred to the shell of the battery device and the interior of the shell, which helps to extend the service life of the shell and components such as the battery cells inside the shell. The pigment layer is used to color the first outer surface so that the first outer surface has a specific color to improve the recognition of the shell. The reflective layer can reflect infrared radiation into the external environment, reducing the probability of infrared thermal radiation being transferred to the pigment layer and the thermal insulation layer, thereby reducing the probability of the pigment layer decomposing due to the thermal effect of infrared light, that is, reducing the probability of discoloration of the pigment layer, and also reducing the impact of the thermal effect of infrared light on the thermal insulation layer. The reflective layer is used to transmit visible light, that is, the appearance color of the substrate is the color presented by the combination of the pigment layer and the reflective layer.

[0013] In some embodiments, the thermal insulation layer is a sheet-like film material, and the protective layer structure includes an adhesive layer, which is bonded between the first outer surface and the thermal insulation layer.

[0014] In the above technical solution, when the thermal insulation layer is a sheet-like film material, the provision of the adhesive layer can make the thermal insulation layer firmly adhere to the first outer surface, reduce the relative sliding of the thermal insulation layer relative to the first outer surface, and thus more effectively protect the first outer surface.

[0015] In some embodiments, the adhesive layer is made of pressure-sensitive adhesive or hot-melt adhesive.

[0016] In the above technical solution, the pressure-sensitive adhesive and the hot-melt adhesive both have good viscosity and temperature resistance, so that the thermal insulation layer can be firmly bonded to the first outer surface.

[0017] In some embodiments, the reflective layer is a sheet-like film material, and the protective layer structure includes a wear-resistant layer, which is disposed on a surface of the reflective layer away from the first outer surface.

[0018] In the above technical solution, when the reflective layer is a sheet-like film material, the wear resistance of the protective layer structure can be improved by providing a wear-resistant layer on the surface of the reflective layer.

[0019] In some embodiments, the thermal insulation layer is made by physically mixing a first base material and a thermal insulation filler.

[0020] In the above technical solution, the thermal insulation filler is mixed with the first substrate, which can enhance the thermal insulation performance of the thermal insulation layer, thereby reducing the impact of high or low temperatures in the external environment on the shell and components such as the battery cell located inside the shell.

[0021] In some embodiments, the thermal insulation layer is a coating applied to the first outer surface, and the first substrate includes one of epoxy resin, fluorocarbon resin, and acrylic resin; or, the thermal insulation layer is a sheet-like film material, and the first substrate is one of alkyd resin, polyurethane resin, and acrylic resin.

[0022] In the above technical solution, epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin all have good heat resistance and weather resistance, and can enhance the heat resistance and weather resistance of the thermal insulation layer, thereby reducing the impact of high or low temperatures in the external environment on the shell and components such as the battery cells located inside the shell.

[0023] In some embodiments, the thermal insulation filler includes silica aerogel and / or hollow glass microspheres.

[0024] In the above technical solution, both silica aerogel and hollow glass microspheres have extremely low thermal conductivity and high dispersibility, and can be easily dispersed into the first substrate, thereby improving the thermal insulation performance of the insulation layer and reducing the impact of high or low temperatures in the external environment on the shell and components such as the battery cell located inside the shell.

[0025] In some embodiments, the reflective layer is made by physically mixing the second substrate and a reflective filler.

[0026] In the above technical solution, the reflective filler is mixed with the second base material, which can improve the reflective performance of the reflective layer to light.

[0027] In some embodiments, the reflective layer is a coating, and the second substrate includes one of alkyd resin, water-based polyurethane resin, and acrylate; or, the reflective layer is a sheet-like film material, and the second substrate includes one of alkyd resin, polyurethane resin, and acrylic resin.

[0028] In the above technical solution, alkyd resins, waterborne polyurethane resins, acrylates, polyurethane resins, and acrylic resins all have excellent weather resistance and transparency, thereby enhancing the weather resistance and transparency of the reflective layer. The reflective layer's excellent weather resistance helps improve the weather resistance of the housing, thereby enhancing the performance of the battery device in outdoor environments. The reflective layer's excellent transparency can reduce the impact on the color display of the pigment layer.

[0029] In some embodiments, the reflective filler is made of a combination of ceramic powder of metal oxides and titanium dioxide.

[0030] In the above-mentioned technical solution, the combination of metal oxide ceramic powder and titanium dioxide effectively reflects infrared and visible light, preventing the thermal radiation from infrared light from reaching the pigment layer. This reduces the probability of the pigment layer decomposing due to the thermal effects of infrared light, thereby reducing the probability of discoloration of the pigment layer and the impact of infrared light thermal effects on the thermal insulation layer. This combination also maintains a high degree of transparency, enhancing the reflective properties of the reflective layer while maintaining its transparency and, consequently, its color rendering.

[0031] In some embodiments, the pigment layer is made by physically mixing a third base material and a color filler.

[0032] In the above technical solution, the color filler is mixed with the third base material, which can make the pigment layer appear colored, thereby making the protective layer structure appear colored.

[0033] In some embodiments, the pigment layer is a coating, and the third substrate includes one of epoxy resin, fluorocarbon resin, and acrylic resin; or, the pigment layer is a sheet-like film material, and the third substrate includes one of alkyd resin, polyurethane resin, and acrylic resin.

[0034] In the above technical solution, the epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin may all be transparent before being mixed with the color filler, that is, the influence on the color filler may be reduced.

[0035] In a second aspect, an embodiment of the present application provides an electric device, comprising the battery device described in any embodiment of the present application, wherein the battery device provides electrical energy for the electric device.

[0036] In the above technical solution, by adopting the battery device mentioned above, the performance of the battery device in an open-air environment can be improved, thereby helping to improve the performance of electrical equipment in an open-air environment.

[0037] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a battery device provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of a protective layer structure provided in an embodiment of the present application;

[0040] Figure 3A schematic diagram of another protective layer structure provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application.

[0042] Description of Reference Numerals

[0043] 100. Battery device; 10. Shell; 11. Base; 12. Protective layer structure; 121. Adhesive layer; 122. Heat-insulating layer; 123. Pigment layer; 124. Reflective layer; 125. Wear-resistant layer; 200. Vehicle; 21. Controller; 22. Motor. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0045] The various specific technical features described in the specific embodiments may be combined in any suitable manner, unless they are inconsistent. For example, different embodiments and technical solutions may be formed by combining different specific technical features. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0046] In the following description, the terms "first, second, ..." are used solely to distinguish different objects and do not imply any similarities or connections between the objects. It should be understood that the directions "above," "below," "outside," and "inside" refer to directions during normal use. The directions "left" and "right" refer to the left-right directions shown in the corresponding schematic diagrams, which may or may not be the left-right directions during normal use.

[0047] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element. "At least two" means greater than or equal to two.

[0048] Currently, market trends indicate that, with the advancement of battery technology, battery applications are becoming increasingly widespread. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in aerospace and other fields. As battery applications continue to expand, market demand is also growing, and production is also increasing.

[0049] During the use of battery devices, since many electrical devices are often used outdoors, battery devices are also exposed to the outdoors for long periods of time. The use of battery devices in open-air environments has become a matter of close concern in the industry. In related technologies, prolonged exposure to the outdoors not only causes the battery housing to fade and degrade, but also affects the performance of the battery cells within the housing, ultimately shortening the battery life.

[0050] Based on the above considerations, in order to improve the performance of the battery device in an open-air environment, the applicant has conducted in-depth research and designed a battery device and electrical equipment.

[0051] In a first aspect, an embodiment of the present application provides a battery device comprising a shell, which serves as an exterior component of the battery device. The shell comprises a base and a protective layer structure. The base has a first outer surface facing the external environment of the battery device, and the protective layer structure is disposed on the first outer surface. The protective layer structure comprises a thermal insulation layer, a reflective layer, and a pigment layer. The thermal insulation layer is disposed on the first outer surface; the reflective layer is disposed on a side of the thermal insulation layer away from the first outer surface, and is configured to reflect infrared radiation and transmit visible light; and the pigment layer is disposed between the thermal insulation layer and the reflective layer.

[0052] With this arrangement, the thermal insulation layer is used to block the spread of heat as much as possible, reducing the impact of high or low temperatures in the external environment on the shell and components such as the battery cells located inside the shell, and blocking external heat from being transferred to the shell and the interior of the shell of the battery device, which helps to extend the service life of the shell and components such as the battery cells inside the shell. The pigment layer is used to color the first outer surface, giving the first outer surface a specific color to enhance the recognition of the shell. The reflective layer can reflect infrared radiation into the external environment, reducing the probability of infrared thermal radiation being transferred to the pigment layer and the thermal insulation layer, thereby reducing the probability of the pigment layer decomposing due to the thermal effect of infrared light, that is, reducing the probability of discoloration of the pigment layer, and also reducing the impact of the thermal effect of infrared light on the thermal insulation layer. The reflective layer is used to transmit visible light, that is, the appearance color of the substrate is the color presented by the combination of the pigment layer and the reflective layer.

[0053] Therefore, the protective layer structure can reduce the impact of external heat and thermal radiation on the shell and components such as the battery cells inside the shell, which helps to extend the service life of the battery device and thereby improve the performance of the battery device in an open-air environment. It can also color the first outer surface through the pigment layer, and the reflective layer can reduce the chance of discoloration of the pigment layer, which helps to improve product recognition.

[0054] The embodiment of the present application provides an electric device, including any battery device provided in the first aspect of the embodiment of the present application. The electric device can be, but is not limited to, a vehicle, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the vehicle can be a fuel vehicle, a gas vehicle, a new energy vehicle or a rail vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.; the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; the electric tool includes metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.; the spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0055] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices described above, but can also be applied to all electrical equipment that use battery devices.

[0056] In some embodiments, the electric device is a vehicle 200. Figure 4 The vehicle 200 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. A battery device 100 is provided inside the vehicle 200. The battery device 100 may be provided at the bottom, head, or tail of the vehicle 200. The battery device 100 may be used to power the vehicle 200. For example, the battery device 100 may serve as an operating power source for the vehicle 200. The vehicle 200 may further include a controller 21 and a motor 22. The controller 21 is used to control the battery device 100 to power the motor 22, for example, to meet the power requirements for starting, navigating, and driving the vehicle 200.

[0057] The present invention provides a battery device 100. Figure 1 and Figure 2The battery device 100 includes a shell 10, which serves as the exterior component of the battery device 100. The shell 10 includes a base 11 and a protective layer structure 12. The base 11 has a first outer surface facing the external environment of the battery device 100, and the protective layer structure 12 is disposed on the first outer surface. The protective layer structure 12 includes a thermal insulation layer 122, a reflective layer 124, and a pigment layer 123. The thermal insulation layer 122 is disposed on the first outer surface; the reflective layer 124 is disposed on the side of the thermal insulation layer 122 away from the first outer surface. The reflective layer 124 is configured to reflect infrared radiation and transmit visible light; and the pigment layer 123 is disposed between the thermal insulation layer 122 and the reflective layer 124.

[0058] The shell 10 serves as an exterior component of the battery device 100 , and the shape of the base 11 of the shell 10 is not limited.

[0059] The protective layer structure 12 is disposed on the first outer surface. It can be understood that a portion or the entirety of the first outer surface is covered by the protective layer structure 12 .

[0060] In the battery device 100 provided in the embodiment of the present application, the thermal insulation layer 122 is used to block the spread of heat as much as possible, reduce the impact of high or low temperatures in the external environment on the shell 10 and components such as the battery cells located inside the shell 10, and block external heat from being transferred to the shell 10 of the battery device 100 and the interior of the shell 10, which helps to extend the service life of the shell 10 and components such as the battery cells inside the shell 10. The pigment layer 123 is used to color the first outer surface so that the first outer surface has a specific color to enhance the recognition of the shell 10. The reflective layer 124 can reflect infrared radiation into the external environment to reduce the probability of infrared thermal radiation being transferred to the pigment layer 123 and the thermal insulation layer 122, thereby reducing the probability of the pigment layer 123 being decomposed due to the thermal effect generated by the infrared light, that is, reducing the probability of the pigment layer 123 changing color, and also reducing the impact of the thermal effect of the infrared light on the thermal insulation layer 122. The reflective layer 124 is used to transmit visible light. That is, the appearance color of the substrate 11 is the color presented by the combination of the pigment layer 123 and the reflective layer 124 .

[0061] Therefore, the protective layer structure 12 can reduce the impact of external heat and heat radiation on the shell 10 and components such as the battery cells inside the shell 10, which helps to extend the service life of the battery device 100, thereby improving the performance of the battery device 100 in an open-air environment. It can also color the first outer surface through the pigment layer 123, and at the same time, the reflective layer 124 can reduce the probability of discoloration of the pigment layer 123, which helps to improve product recognition.

[0062] A second aspect of the embodiments of the present application provides an electrical device, comprising any one of the battery devices 100 provided in the first aspect of the embodiments of the present application.

[0063] In the embodiment of the present application, the protective layer structure 12 can be a coating or a sheet-like mold material.

[0064] Coating refers to a liquid, semi-solid or powdered material applied uniformly to a first outer surface by painting, spraying, dipping or other methods to form a thin and continuous solid film.

[0065] When the protective layer structure 12 is a coating, the heat insulating layer 122, the pigment layer 123, and the reflective layer 124 are sprayed onto the first outer surface in sequence.

[0066] The coating can be carried out by one of three methods: electrostatic spraying, high-pressure airless spraying, and dipping spraying, and each layer of the protective layer structure 12 is sprayed separately. Of course, other coating spraying methods not listed are also applicable to the embodiments of the present application.

[0067] Sheet film refers to a thin sheet film material.

[0068] When the protective layer structure 12 is a sheet-like film material, it is only necessary to sequentially attach the heat-insulating layer 122, the pigment layer 123, and the reflective layer 124 to the first outer surface. The embodiment of the present application does not limit the specific attachment method of the sheet-like film material.

[0069] The following method can be used for attachment: each layer of the protective layer structure 12 is cut into appropriate sizes and then attached to the first outer surface in sequence using a scraper. After each layer of the film is attached, a roller is used to press the attached surface of the film to reduce the possibility of bubbles. Of course, other film attachment methods not listed are also applicable to the embodiments of this application.

[0070] For some examples, see Figure 3 The heat insulation layer 122 is a sheet-like film material, and the protective layer structure 12 includes an adhesive layer 121 , which is bonded between the first outer surface and the heat insulation layer 122 .

[0071] In this embodiment, when the thermal insulation layer 122 is a sheet-like film material, the provision of the adhesive layer 121 can enable the thermal insulation layer 122 to be firmly bonded to the first outer surface, reducing the relative sliding of the thermal insulation layer 122 relative to the first outer surface, thereby more effectively protecting the first outer surface.

[0072] In some embodiments, the adhesive layer 121 is made of a pressure-sensitive adhesive or a hot-melt adhesive. In this embodiment, the pressure-sensitive adhesive and the hot-melt adhesive both have good viscosity and temperature resistance, so that the thermal insulation layer 122 can be firmly bonded to the first outer surface.

[0073] In some embodiments, such as Figure 3As shown, the reflective layer 124 is a sheet-like film material, and the protective layer structure 12 includes a wear-resistant layer 125 . The wear-resistant layer 125 is disposed on a surface of the reflective layer 124 away from the first outer surface.

[0074] In this embodiment, when the reflective layer 124 is a sheet-like film material, the wear resistance of the protective layer structure 12 can be improved by providing a wear-resistant layer 125 on the surface of the reflective layer 124 .

[0075] The wear-resistant layer 125 has good wear resistance, and its material can be polymer, metal or inorganic material. For example, polymer can include polycarbonate, polyamide, polyethylene, polypropylene, etc.; inorganic material can be fabric, aluminum oxide, etc.

[0076] In some embodiments, the thermal insulation layer 122 is made by physically mixing a first base material and a thermal insulation filler.

[0077] Thermal insulation filler refers to filler with thermal insulation properties.

[0078] In this embodiment, the first substrate is the basis of the thermal insulation layer 122. The thermal insulation filler is mixed with the first substrate to enhance the thermal insulation performance of the thermal insulation layer 122, thereby reducing the impact of high or low temperatures in the external environment on the shell 10 and components such as the battery cell located inside the shell 10.

[0079] In some embodiments, the thermal insulation layer 122 is a coating applied to the first outer surface, and the first substrate includes one of epoxy resin, fluorocarbon resin, and acrylic resin; or, the thermal insulation layer 122 is a sheet-like film material, and the first substrate is one of alkyd resin, polyurethane resin, and acrylic resin.

[0080] In this embodiment, epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin all have good heat resistance and weather resistance, and can enhance the heat resistance and weather resistance of the thermal insulation layer 122, thereby reducing the impact of high or low temperatures in the external environment on the shell 10 and components such as the battery cell located inside the shell 10.

[0081] Weather resistance refers to the ability to withstand the effects of various weather factors in the natural environment, including but not limited to sunlight (UV radiation), temperature fluctuations (thermal expansion and contraction), humidity, weathering, rain, snow, salt spray, and pollutants. The good weather resistance of the thermal insulation layer 122 helps improve the weather resistance of the protective layer structure 12, and thus the weather resistance of the shell 10, thereby improving the performance of the battery device 100 in outdoor environments.

[0082] In some embodiments, the thermal insulation filler includes silica aerogel and / or hollow glass microspheres.

[0083] In some embodiments, the thermal insulation filler may include only silica aerogel. In some embodiments, the thermal insulation filler may include only hollow glass microspheres. In some embodiments, the thermal insulation filler may include both silica aerogel and hollow glass microspheres.

[0084] In this embodiment, both the silica aerogel and the hollow glass microspheres have extremely low thermal conductivity and high dispersibility, and can be easily dispersed into the first substrate, thereby improving the thermal insulation performance of the thermal insulation layer 122 and reducing the impact of high or low temperatures in the external environment on the shell 10 and components such as the battery core located inside the shell 10.

[0085] In some embodiments, the reflective layer 124 is made by physically mixing the second substrate and the reflective filler.

[0086] Reflective fillers are fillers that increase the reflectivity of light.

[0087] In this embodiment, the second substrate is the basis of the reflective layer 124 , and the reflective filler is mixed with the second substrate to enhance the light reflective performance of the reflective layer 124 .

[0088] In some embodiments, the reflective layer 124 is a coating, and the second substrate includes one of alkyd resin, water-based polyurethane resin, and acrylate; or, the reflective layer 124 is a sheet-like film material, and the second substrate 11 includes one of alkyd resin, polyurethane resin, and acrylic resin.

[0089] In this embodiment, alkyd resins, waterborne polyurethane resins, acrylates, polyurethane resins, and acrylic resins all have excellent weather resistance and transparency, thereby enhancing the weather resistance and transparency of reflective layer 124. The excellent weather resistance of reflective layer 124 helps improve the weather resistance of shell 10, thereby enhancing the performance of battery device 100 in outdoor environments. The excellent transparency of reflective layer 124 can reduce the impact on the external color of pigment layer 123.

[0090] In some embodiments, the reflective filler is made of a physical mixture of ceramic powder of metal oxide and titanium dioxide.

[0091] The ceramic powder of metal oxide refers to ceramic powder of metal oxides other than titanium dioxide, such as zinc oxide, aluminum oxide, etc. There is no limitation on other metals here, and they can be selected according to actual conditions.

[0092] In this embodiment, the combination of metal oxide ceramic powder and titanium dioxide effectively reflects infrared and visible light, preventing the thermal radiation from infrared light from reaching pigment layer 123. This reduces the probability of pigment layer 123 decomposing due to the thermal effects of infrared light, thereby reducing the likelihood of pigment layer 123 fading. It also reduces the impact of infrared light's thermal effects on thermal insulation layer 122. The combination of metal oxide ceramic powder and titanium dioxide also maintains a high degree of transparency, enhancing the reflective properties of reflective layer 124 while maintaining its transparency, and thus, its color rendering, without affecting pigment layer 123.

[0093] In some embodiments, the pigment layer 123 is made by physically mixing the third base material and the color filler.

[0094] Color fillers refer to fillers that can provide different colors. The specific colors are not limited here and can be selected according to actual product needs.

[0095] In this embodiment, the third substrate is the basis of the pigment layer 123 . The color filler is mixed with the third substrate, which can make the pigment layer 123 appear colored, thereby making the protective layer structure 12 appear colored, thereby improving the recognition of the shell 10 .

[0096] In some embodiments, the pigment layer 123 is a coating, and the third substrate includes one of epoxy resin, fluorocarbon resin, and acrylic resin; or, the pigment layer 123 is a sheet-like film material, and the third substrate includes one of alkyd resin, polyurethane resin, and acrylic resin.

[0097] In this embodiment, the epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin may all be transparent before being mixed with the color filler, that is, the influence on the color filler may be reduced.

[0098] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or at least two embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in the present application and features of different embodiments or examples without mutual contradiction.

[0099] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A battery device, characterized in that: The battery device includes a shell portion, the shell portion serving as an appearance component of the battery device, and the shell portion includes: a substrate having a first outer surface facing an external environment of the battery device; a protective layer structure, the protective layer structure being disposed on the first outer surface; The protective layer structure comprises: a heat-insulating layer, provided on the first outer surface; a reflective layer, disposed on a side of the heat-insulating layer away from the first outer surface, the reflective layer being configured to reflect infrared radiation and transmit visible light; The pigment layer is arranged between the heat-insulating layer and the reflecting layer.

2. The battery device according to claim 1, wherein: The heat insulation layer is a sheet-like film material, and the protective layer structure includes an adhesive layer, which is bonded between the first outer surface and the heat insulation layer.

3. The battery device according to claim 2, characterized in that The adhesive layer is made of pressure-sensitive adhesive or hot-melt adhesive.

4. The battery device according to claim 1, wherein: The reflective layer is a sheet-like film material, and the protective layer structure includes a wear-resistant layer. The wear-resistant layer is arranged on a surface of the reflective layer away from the first outer surface.

5. An electrical device, characterized in that: The battery device comprises the battery device according to any one of claims 1 to 4, wherein the battery device provides electrical energy for the electrical device.

Images