Battery device and electric equipment

Abstract

The invention 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] This application relates to the field of battery device manufacturing technology, and in particular to a battery device and electrical equipment. Background Technology

[0002] With the development of battery technology, battery devices have been widely used in electric vehicles, energy storage power systems, aerospace and other fields to provide power to electrical equipment in these fields.

[0003] Many electrical devices are frequently used outdoors, which means that battery devices need to be exposed to the outdoors for extended periods. Therefore, improving the performance of battery devices in outdoor environments has become a key concern for the industry. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a battery device and electrical equipment to improve the performance of the battery device in outdoor environments.

[0005] In a first aspect, embodiments of this application provide a battery device, including a housing portion, the housing portion serving as an external component of the battery device, the housing portion comprising:

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

[0007] A protective layer structure is disposed on the first outer surface;

[0008] The protective layer structure includes:

[0009] A heat insulation layer is disposed on the first outer surface;

[0010] A reflective layer is disposed on the side of the heat insulation layer away from the first outer surface. The reflective layer is used to reflect infrared radiation and to transmit visible light.

[0011] A pigment layer is disposed between the heat insulation layer and the reflective layer.

[0012] In the above technical solution, the heat 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 casing and components such as the battery cells located inside the casing. It prevents external heat from being transferred to the casing and its interior, helping to extend the lifespan of the casing and its internal components. The pigment layer is used to color the first outer surface, giving it a specific color to improve the casing's visibility. The reflective layer reflects infrared radiation into the external environment, reducing the probability of infrared heat radiation being transferred to the pigment layer and the heat insulation layer. This reduces the probability of the pigment layer decomposing due to the thermal effect of infrared light, thus reducing the probability of discoloration of the pigment layer and also reducing the impact of infrared heat on the heat insulation layer. The reflective layer allows visible light to pass through; that is, the appearance color of the substrate is the result of the combined effect of the pigment layer and the reflective layer.

[0013] In some embodiments, the insulation layer includes a first substrate and an insulation filler, wherein the insulation filler is distributed in the first substrate.

[0014] In the above technical solution, the heat insulation filler is mixed with the first substrate, which can enhance the thermal insulation performance of the heat 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.

[0015] In some embodiments, the heat insulation layer is a coating applied to the first outer surface, and the first substrate accounts for 52% to 73% of the mass.

[0016] And / or, the heat insulation layer is a coating applied to the first outer surface, and the heat insulation filler accounts for 25% to 47% of the total mass.

[0017] In the above technical solution, when the heat insulation layer is a coating, the first substrate has a mass ratio of 52% to 73%, which can provide a good filling base for the heat insulation filler; the heat insulation filler has a mass ratio of 25% to 47%, which can provide good heat insulation function.

[0018] In some embodiments, the heat insulation layer is a sheet-like membrane material, and the first substrate accounts for 80% to 90% of the mass.

[0019] And / or, the heat insulation layer is a sheet-like membrane material, and the heat insulation filler accounts for 10% to 15% of the total mass.

[0020] In the above technical solution, when the heat insulation layer is a sheet-like membrane material, the first substrate has a mass ratio of 80% to 90%, which can provide a good filling base for the heat insulation filler; when the heat insulation filler has a mass ratio of 10% to 15%, it can provide good heat insulation function.

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

[0022] In the above technical solutions, epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin and polyurethane resin all have good heat resistance and weather resistance, which can enhance the heat resistance and weather resistance of the 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.

[0023] In some embodiments, the insulating filler comprises 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 includes a second substrate and a reflective filler, the reflective filler being distributed in the second substrate.

[0026] In the above technical solution, mixing the reflective filler with the second substrate can improve the reflective performance of the reflective layer.

[0027] In some embodiments, the reflective layer is a coating, and the second substrate accounts for 43% to 85% of the total mass.

[0028] And / or, the reflective layer is a coating, and the reflective filler accounts for 13% to 55% of the total mass.

[0029] In the above technical solution, when the reflective layer is a coating, the second substrate has a mass ratio of 43% to 85%, which can provide a good filling base for the reflective filler; when the reflective filler has a mass ratio of 13% to 55%, it can provide good light reflection performance.

[0030] In some embodiments, the reflective layer is a sheet-like film material, and the second substrate accounts for 73% to 85% of the mass.

[0031] And / or, the reflective layer is a sheet-like film material, and the reflective filler accounts for 15% to 25% of the total mass.

[0032] In the above technical solution, when the reflective layer is a sheet-like film material, the second substrate has a mass ratio of 73% to 85%, which can provide a good foundation for the reflective filler; when the reflective filler has a mass ratio of 15% to 25%, it can provide good light reflection performance.

[0033] In some embodiments, the reflective layer is a coating, and the second substrate includes any one or any combination of alkyd resin, waterborne polyurethane resin, and acrylate; or, the reflective layer is a sheet-like film, and the second substrate includes any one or any combination of alkyd resin, polyurethane resin, and acrylate resin.

[0034] In the above technical solutions, alkyd resin, waterborne polyurethane resin, acrylate, polyurethane resin, and acrylic resin all possess good weather resistance and transparency, thereby enhancing the weather resistance and transparency of the reflective layer. The reflective layer's good weather resistance helps improve the weather resistance of the casing, thus improving the battery device's performance in outdoor environments. The reflective layer's good transparency reduces the impact on the color display of the pigment layer.

[0035] In some embodiments, the reflective filler is made of a combination of ceramic powder of metal oxide and titanium dioxide.

[0036] In the above technical solution, the combination of ceramic powder of metal oxide and titanium dioxide can effectively reflect infrared and visible light, preventing the thermal radiation of infrared light from being transferred to the pigment layer. This reduces the probability of the pigment layer decomposing due to the thermal effect of infrared light, thus reducing the chance of discoloration of the pigment layer. It also reduces the impact of the thermal effect of infrared light on the heat insulation layer. Furthermore, the combination of ceramic powder of metal oxide and titanium dioxide maintains high transparency, enhancing the reflective performance of the reflective layer without affecting its transparency, and therefore not affecting the color display of the pigment layer.

[0037] In some embodiments, the pigment layer includes a third substrate and a color filler, wherein the color filler is distributed in the third substrate.

[0038] In the above technical solution, the color filler is mixed with the third substrate, which enables the pigment layer to exhibit color, thereby enabling the protective layer structure to exhibit color.

[0039] In some embodiments, the pigment layer is a coating, and the third substrate accounts for 55% to 65% of the total mass.

[0040] And / or, the pigment layer is a coating, and the color filler accounts for 33% to 45% of the total mass.

[0041] In the above technical solution, when the pigment layer is a coating, the third substrate has a mass ratio of 55% to 65%, which can provide a good filling base for the color filler; when the mass ratio of the color filler is 33% to 45%, it can provide a good coloring function.

[0042] In some embodiments, the pigment layer is a sheet-like film material, and the third substrate accounts for 67% to 80% of the mass.

[0043] And / or, the pigment layer is a sheet-like film material, and the color filler accounts for 20% to 30% by mass.

[0044] In the above technical solution, when the pigment layer is a sheet-like film material, the third substrate has a mass ratio of 67% to 80%, which can provide a good filling base for the color filler; when the mass ratio of the color filler is 20% to 30%, it can provide a good coloring function.

[0045] In some embodiments, the pigment layer is a coating, and the third substrate includes any one or any combination of epoxy resin, fluorocarbon resin, and acrylic resin; or, the pigment layer is a sheet-like film, and the third substrate includes any one or any combination of alkyd resin, polyurethane resin, and acrylic resin.

[0046] In the above technical solution, epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin can all be transparent before being mixed with color fillers, which reduces the impact on color fillers.

[0047] In some embodiments, the heat insulation layer is a sheet-like membrane material, and the protective layer structure includes an adhesive layer bonded between the first outer surface and the heat insulation layer.

[0048] In the above technical solution, when the heat insulation layer is a sheet-like membrane material, the setting of the adhesive layer enables the heat insulation layer to be firmly bonded to the first outer surface, reducing the relative sliding of the heat insulation layer relative to the first outer surface, thereby more effectively protecting the first outer surface.

[0049] In some embodiments, the adhesive layer is made of pressure-sensitive adhesive or hot melt adhesive.

[0050] In the above technical solutions, pressure-sensitive adhesive and hot melt adhesive both have good adhesion and temperature resistance, which enables the heat insulation layer to be firmly bonded to the first outer surface.

[0051] In some embodiments, the reflective layer is a sheet-like film material, and the protective layer structure includes a wear-resistant layer disposed on the surface of the reflective layer away from the first outer surface.

[0052] 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 setting a wear-resistant layer on the surface of the reflective layer.

[0053] Secondly, embodiments of this application provide an electrical device, including the battery device described in any embodiment of this application, wherein the battery device provides electrical energy to the electrical device.

[0054] In the above technical solution, by adopting the battery device mentioned above, the performance of the battery device in the open-air environment can be improved, thereby helping to improve the performance of the electrical equipment in the open-air environment.

[0055] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0057] Figure 2 A schematic diagram of a protective layer structure provided in an embodiment of this application;

[0058] Figure 3 A schematic diagram of another protective layer structure provided in an embodiment of this application;

[0059] Figure 4 This is a schematic diagram of the vehicle structure provided in an embodiment of this application.

[0060] Explanation of reference numerals in the attached figures

[0061] 100. Battery assembly; 10. Shell; 11. Substrate; 12. Protective layer structure; 121. Adhesive layer; 122. Heat insulation layer; 123. Pigment layer; 124. Reflective layer; 125. Wear-resistant layer; 200. Vehicle; 21. Controller; 22. Motor. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0063] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0064] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0065] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "At least two" means two or more.

[0066] Currently, from a market perspective, with the development of battery technology, the application of battery devices is becoming increasingly widespread. They are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. As the application areas of battery devices continue to expand, the market demand is also constantly increasing, and their production is also continuously growing.

[0067] During the use of battery devices, many electrical devices are frequently used outdoors, and the battery devices themselves are also exposed to the outdoors for extended periods. The use of battery devices in open-air environments has become a major concern in the industry. In related technologies, prolonged exposure to the outdoors not only causes problems such as fading and performance degradation of the battery casing, but also affects the performance of the internal battery cells, ultimately leading to a reduction in the battery device's lifespan.

[0068] Based on the above considerations, in order to improve the performance of the battery device in the open-air environment, the applicant has conducted in-depth research and designed a battery device and electrical equipment.

[0069] A first aspect of this application provides a battery device, which includes a housing as an external component of the battery device. The housing includes a substrate and a protective layer structure. The substrate 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 includes a heat-insulating layer, a reflective layer, and a pigment layer. The heat-insulating layer is disposed on the first outer surface; the reflective layer is disposed on the side of the heat-insulating layer away from the first outer surface, and the reflective layer is used to reflect infrared radiation and transmit visible light; the pigment layer is disposed between the heat-insulating layer and the reflective layer.

[0070] This design allows the heat insulation layer to effectively block heat transfer, reducing the impact of high or low temperatures on the casing and internal components such as the battery cells. By preventing external heat from reaching the casing and its interior, it helps extend the lifespan of the casing and internal components. The pigment layer colors the first outer surface, giving it a specific color to enhance the casing's visibility. The reflective layer reflects infrared radiation back into the environment, reducing the likelihood of infrared heat radiation reaching the pigment and heat insulation layers. This reduces the chance of the pigment layer decomposing due to the thermal effect of infrared light, thus reducing the likelihood of discoloration and minimizing the impact of infrared heat on the heat insulation layer. The reflective layer allows visible light to pass through; in other words, the substrate's appearance color is a result of the combined effect of the pigment and reflective layers.

[0071] Therefore, the protective layer structure can reduce the impact of external heat and thermal radiation on the casing and internal components such as the battery cells, which helps to extend the service life of the battery device and improve its performance in outdoor environments. In addition, the pigment layer can color the first outer surface, while the reflective layer can reduce the probability of discoloration of the pigment layer, which helps to improve product recognition.

[0072] This application provides an electrical device, including any of the battery devices provided in the first aspect of this application. The electrical device can be, but is not limited to, vehicles, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Vehicles can be fuel-powered vehicles, natural gas vehicles, new energy vehicles, or rail vehicles; new energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc.; electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0073] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices described above, but can also be applied to all electrical devices that use battery devices.

[0074] In some embodiments, the electrical equipment is vehicle 200. See also... Figure 4 Vehicle 200 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside vehicle 200, and the battery device 100 can be located at the bottom, front, or rear of vehicle 200. The battery device 100 can be used to power vehicle 200; for example, the battery device 100 can serve as the operating power source for vehicle 200. Vehicle 200 may also include a controller 21 and a motor 22. The controller 21 is used to control the battery device 100 to supply power to the motor 22, for example, to meet the power needs of vehicle 200 during starting, navigation, and driving.

[0075] This application provides a battery device 100. Please refer to [link / reference]. Figure 1 and Figure 2 The battery device 100 includes a housing 10, which serves as the external appearance component of the battery device 100. The housing 10 includes a substrate 11 and a protective layer structure 12. The substrate 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 heat-insulating layer 122, a reflective layer 124, and a pigment layer 123. The heat-insulating layer 122 is disposed on the first outer surface; the reflective layer 124 is disposed on the side of the heat-insulating layer 122 away from the first outer surface, and the reflective layer 124 is used to reflect infrared radiation and transmit visible light; the pigment layer 123 is disposed between the heat-insulating layer 122 and the reflective layer 124.

[0076] 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.

[0077] The protective layer structure 12 is disposed on the first outer surface, which can be understood as a part or all of the first outer surface being covered by the protective layer structure 12.

[0078] The battery device 100 provided in this application embodiment has a heat insulation layer 122 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 casing 10 and components such as the battery cells located inside the casing 10. This prevents external heat from being transferred to the casing 10 and its interior, helping to extend the service life of the casing 10 and its internal components. A pigment layer 123 is used to color the first outer surface, giving it a specific color to improve the visibility of the casing 10. A reflective layer 124 can reflect infrared radiation into the external environment, reducing the probability of infrared heat radiation being transferred to the pigment layer 123 and the heat insulation layer 122. This reduces the probability of the pigment layer 123 decomposing due to the thermal effect of infrared light, i.e., reducing the probability of discoloration of the pigment layer 123, and also reduces the impact of the thermal effect of infrared light on the heat insulation layer 122. The reflective layer 124 is used to transmit visible light, meaning that the appearance color of the substrate 11 is the color presented by the combination of the pigment layer 123 and the reflective layer 124.

[0079] Therefore, the protective layer structure 12 can reduce the impact of external heat and thermal radiation on the casing 10 and the internal components such as the battery cell, which helps to extend the service life of the battery device 100 and improve the performance of the battery device 100 in the open environment. In addition, the pigment layer 123 can color the first outer surface, while the reflective layer 124 can reduce the probability of discoloration of the pigment layer 123, which helps to improve product recognition.

[0080] The second aspect of this application provides an electrical device, including any of the battery devices 100 provided in the first aspect of this application.

[0081] In the embodiments of this application, the protective layer structure 12 may be a coating or a sheet-like molding material.

[0082] A coating is a process in which a liquid, semi-solid, or powdered material is uniformly applied to a first outer surface by means of smearing, spraying, dipping, or other methods to form a thin, continuous solid film.

[0083] When the protective layer structure 12 is a coating, the heat insulation layer 122, the pigment layer 123, and the reflective layer 124 are sequentially sprayed onto the first outer surface. This application embodiment does not limit the spraying method.

[0084] The coating can be applied using one of three methods: electrostatic spraying, high-pressure airless spraying, or dip coating. Each layer of the protective layer structure 12 is sprayed separately. Of course, other coating application methods not listed are also applicable to the embodiments of this application.

[0085] Sheet-like membranes refer to a type of thin, sheet-like film material.

[0086] When the protective layer structure 12 is a sheet-like membrane material, it is only necessary to sequentially attach the heat insulation layer 122, the pigment layer 123, and the reflective layer 124 to the first outer surface. This application embodiment does not limit the specific attachment method for the sheet-like membrane material.

[0087] The following method can be used for adhesion: After cutting each sheet of the protective layer structure 12 to a suitable size, it is sequentially adhered to the first outer surface using a scraper. After one sheet of film is adhered, the surface of the adhered film is pressed with a roller to reduce the probability of air bubble formation. Of course, other film adhesion methods not listed are also applicable to the embodiments of this application.

[0088] In some embodiments, the heat insulation layer 122 includes a first substrate and a heat insulation filler, wherein the heat insulation filler is distributed in the first substrate.

[0089] Thermal insulation filler refers to filler that has thermal insulation properties.

[0090] In this embodiment, the first substrate is the basis of the heat insulation layer 122. The heat insulation filler is mixed with the first substrate to enhance the thermal insulation performance of the heat 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.

[0091] In some embodiments, the heat insulation layer 122 is a coating applied to the first outer surface, and the mass percentage of the first substrate is 52% to 73%; and / or, the heat insulation layer 122 is a coating applied to the first outer surface, and the mass percentage of the heat insulation filler is 25% to 47%.

[0092] In this embodiment, when the heat insulation layer 122 is a coating applied to the first outer surface, the mass percentage of the first substrate is 52% to 73%, i.e., the mass percentage of the first substrate can be 52%, 55%, 60%, 63%, 65%, 70%, 73%, etc. When the mass percentage of the first substrate is within this range, it can provide a good filling base for the heat insulation filler. The mass percentage of the heat insulation filler is 25% to 47%, i.e., the mass percentage of the heat insulation filler can be 25%, 28%, 30%, 35%, 38%, 40%, 43%, 45%, etc. When the mass percentage of the heat insulation filler is within this range, it can provide good heat insulation performance.

[0093] In some embodiments, the heat insulation layer 122 is a sheet-like membrane material, and the mass percentage of the first substrate is 80% to 90%; and / or, the heat insulation layer 122 is a sheet-like membrane material, and the mass percentage of the heat insulation filler is 10% to 15%.

[0094] In this embodiment, when the heat insulation layer 122 is a sheet-like membrane, the mass percentage of the first substrate is 80% to 90%, i.e., the mass percentage of the first substrate can be 80%, 81%, 83%, 84%, 87%, 89%, 90%, etc. When the mass percentage of the first substrate is within this range, it can provide a good filling base for the heat insulation filler. The mass percentage of the heat insulation filler is 10% to 15%, i.e., the mass percentage of the heat insulation filler can be 10%, 11%, 12%, 13%, 14%, 15%. When the mass percentage of the heat insulation filler is within this range, it can provide good heat insulation performance.

[0095] It should be noted that the sum of the mass percentage of the first substrate and the mass percentage of the heat insulation filler shall not exceed 100%. When the sum of the mass percentage of the first substrate and the mass percentage of the heat insulation filler is less than 100%, the heat insulation layer 122 may also include other substances, such as additives.

[0096] In some embodiments, the heat insulation layer 122 is a coating applied to the first outer surface, and the first substrate includes any one or any combination of epoxy resin, fluorocarbon resin, and acrylic resin; or, the heat insulation layer 122 is a sheet-like membrane material, and the first substrate is any one or any combination of alkyd resin, polyurethane resin, and acrylic resin.

[0097] In this embodiment, epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin all have good heat resistance and weather resistance, which can enhance the heat resistance and weather resistance of the 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.

[0098] Weather resistance refers to the ability to resist the effects of various weather factors in the natural environment, including but not limited to sunlight (ultraviolet radiation), temperature changes (thermal expansion and contraction), humidity, weathering, rain and snow, salt spray, and pollutants. The good weather resistance of the insulation layer 122 helps to increase the weather resistance of the protective layer structure 12, that is, to increase the weather resistance of the shell 10, thereby improving the performance of the battery device 100 in outdoor environments.

[0099] In some embodiments, the insulating filler includes silica aerogel and / or hollow glass microspheres.

[0100] In some embodiments, the insulating filler may consist only of silica aerogel. In some embodiments, the insulating filler may consist only of hollow glass microspheres. In some embodiments, the insulating filler may consist of both silica aerogel and hollow glass microspheres.

[0101] In this embodiment, 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 heat 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 cell located inside the shell 10.

[0102] In some embodiments, the reflective layer 124 includes a second substrate and a reflective filler, wherein the reflective filler is distributed in the second substrate.

[0103] Reflective fillers are fillers that increase the reflectivity of light.

[0104] 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 improve the light reflection performance of the reflective layer 124.

[0105] In some embodiments, the reflective layer 124 is a coating, and the second substrate accounts for 43% to 85% of the mass; and / or, the reflective layer 124 is a coating, and the reflective filler accounts for 13% to 55% of the mass.

[0106] In this embodiment, when the reflective layer 124 is a coating, the mass percentage of the second substrate is 43% to 85%, i.e., the mass percentage of the second substrate can be 43%, 45%, 46%, 49%, 55%, 58%, 59%, 64%, 66%, 69%, 70%, 72%, 75%, 78%, 80%, 83%, or 85%. When the mass percentage of the second substrate is within this range, it can provide a good filling base for the reflective filler. The mass percentage of the reflective filler is 13% to 55%, i.e., the mass percentage of the reflective filler can be 13%, 16%, 17%, 20%, 22%, 26%, 32%, 35%, 40%, 46%, 49%, 52%, or 55%. When the mass percentage of the reflective filler is within this range, it can provide good light reflection performance.

[0107] In some embodiments, the reflective layer 124 is a sheet-like film material, and the second substrate accounts for 73% to 85% of the mass; and / or, the reflective layer 124 is a sheet-like film material, and the reflective filler accounts for 15% to 25% of the mass.

[0108] In this embodiment, when the reflective layer 124 is a sheet-like film, the mass percentage of the second substrate is 73% to 85%, i.e., the mass percentage of the second substrate can be 73%, 75%, 76%, 79%, 80%, 81%, 82%, or 85%. When the mass percentage of the second substrate is within this range, it can provide a good filling base for the reflective filler. The mass percentage of the reflective filler is 15% to 25%, i.e., the mass percentage of the reflective filler can be 15%, 17%, 18%, 20%, 21%, 22%, 23%, 24%, or 25%. When the mass percentage of the reflective filler is within this range, it can provide good light reflection performance.

[0109] It should be noted that the sum of the mass percentage of the second substrate and the mass percentage of the reflective filler shall not exceed 100%. When the sum of the mass percentage of the second substrate and the mass percentage of the reflective filler is less than 100%, the reflective layer 124 may also include other substances, such as additives.

[0110] In some embodiments, the reflective layer 124 is a coating, and the second substrate includes any one or any combination of alkyd resin, waterborne polyurethane resin, and acrylate; or, the reflective layer 124 is a sheet-like film, and the second substrate 11 includes any one or any combination of alkyd resin, polyurethane resin, and acrylate resin.

[0111] In this embodiment, alkyd resin, waterborne polyurethane resin, acrylate, polyurethane resin, and acrylic resin all possess good weather resistance and transparency, thereby enhancing the weather resistance and transparency of the reflective layer 124. The good weather resistance of the reflective layer 124 helps improve the weather resistance of the housing 10, thus improving the performance of the battery device 100 in outdoor environments. The good transparency of the reflective layer 124 reduces the impact on the appearance color of the pigment layer 123.

[0112] In some embodiments, the reflective filler is made of a combination of ceramic powder of metal oxide and titanium dioxide.

[0113] Ceramic powder particles of metal oxides refer to ceramic powder particles of metal oxides other than titanium dioxide, such as zinc oxide and aluminum oxide. There is no limitation on other metals here, and they can be selected according to the actual situation.

[0114] In this embodiment, the combination of ceramic powder of metal oxide and titanium dioxide can effectively reflect infrared and visible light, preventing the thermal radiation of infrared light from being transmitted to the pigment layer 123. This reduces the probability of the pigment layer 123 decomposing due to the thermal effect of infrared light, thus reducing the chance of fading of the pigment layer 123. It also reduces the impact of the thermal effect of infrared light on the heat insulation layer 122. Furthermore, the combination of ceramic powder of metal oxide and titanium dioxide maintains high transparency, enhancing the reflective performance of the reflective layer 124 without affecting its transparency, and thus not affecting the color display of the pigment layer 123.

[0115] In some embodiments, the pigment layer 123 includes a third substrate and a color filler, wherein the color filler is distributed in the third substrate.

[0116] Colored fillers refer to fillers that can be provided in different colors. The specific color is not limited here and can be selected according to the actual product requirements.

[0117] In this embodiment, the third substrate is the basis of the pigment layer 123. The color filler is mixed with the third substrate, which enables the pigment layer 123 to exhibit color, thereby enabling the protective layer structure 12 to exhibit color, which in turn improves the recognizability of the shell 10.

[0118] In some embodiments, the pigment layer 123 is a coating, and the third substrate accounts for 55% to 65% of the total mass; and / or, the pigment layer 123 is a coating, and the color filler accounts for 33% to 45% of the total mass.

[0119] In this embodiment, when the pigment layer 123 is a coating, the mass percentage of the third substrate is 55% to 65%, i.e., the mass percentage of the third substrate can be 55%, 56%, 58%, 60%, 62%, etc. When the mass percentage of the third substrate is within this range, it can provide a good filling base for the color filler. The mass percentage of the color filler is 33% to 45%, i.e., the percentage of the color filler can be 33%, 35%, 36%, 39%, 40%, 43%, 45%, etc. When the color filler is within this range, it can provide good coloring function.

[0120] In some embodiments, the pigment layer 123 is a sheet-like film material, and the third substrate accounts for 67% to 80% of the mass; and / or, the pigment layer 123 is a sheet-like film material, and the color filler accounts for 20% to 30% of the mass.

[0121] In this embodiment, when the pigment layer 123 is a sheet-like film, the mass percentage of the third substrate is 67% to 80%, i.e., the mass percentage of the third substrate can be 67%, 69%, 70%, 73%, 75%, 76%, 79%, 80%, etc. When the mass percentage of the third substrate is within this range, it can provide a good filling base for the color filler. The mass percentage of the color filler is 20% to 30%, i.e., the mass percentage of the color filler can be 20%, 21%, 22%, 24%, 25%, 26%, 27%, 28%, 30%, etc. When the color filler is within this range, it can provide good coloring function.

[0122] It should be noted that the sum of the mass percentage of the third substrate and the mass percentage of the color filler shall not exceed 100%. When the sum of the mass percentage of the third substrate and the mass percentage of the color filler is less than 100%, the pigment layer 123 may also include other substances, such as additives.

[0123] In some embodiments, the pigment layer 123 is a coating, and the third substrate includes any one or any combination of epoxy resin, fluorocarbon resin, and acrylic resin; or, the pigment layer 123 is a sheet-like film, and the third substrate includes any one or any combination of alkyd resin, polyurethane resin, and acrylic resin.

[0124] In this embodiment, the epoxy resin, fluorocarbon resin, acrylic resin, alkyd resin, and polyurethane resin can all be transparent before being mixed with the color filler, which reduces the impact on the color filler.

[0125] In some embodiments, please refer to Figure 3 The heat insulation layer 122 is a sheet-like membrane 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.

[0126] In this embodiment, when the heat insulation layer 122 is a sheet-like membrane, the adhesive layer 121 enables the heat insulation layer 122 to be firmly bonded to the first outer surface, reducing the relative sliding of the heat insulation layer 122 relative to the first outer surface, thereby more effectively protecting the first outer surface.

[0127] In some embodiments, the adhesive layer 121 is made of pressure-sensitive adhesive or hot melt adhesive. In this embodiment, both pressure-sensitive adhesive and hot melt adhesive have good adhesion and temperature resistance, enabling the heat insulation layer 122 to be firmly bonded to the first outer surface.

[0128] In some embodiments, such as Figure 3 As shown, the reflective layer 124 is a sheet-like film material, and the protective layer structure 12 includes a wear-resistant layer 125, which is disposed on the surface of the reflective layer 124 away from the first outer surface.

[0129] 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.

[0130] The wear-resistant layer 125 has good wear resistance. Its material can be a polymer, metal or inorganic material. For example, polymers can include polycarbonate, polyamide, polyethylene, polypropylene, etc.; inorganic materials can be fabric, alumina, etc.

[0131] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or at least two embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0132] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, Includes a housing portion, which serves as an exterior component of the battery device, the housing portion comprising: A substrate having a first outer surface facing the external environment of the battery device; A protective layer structure is disposed on the first outer surface; The protective layer structure includes: A heat insulation layer is disposed on the first outer surface; A reflective layer is disposed on the side of the heat insulation layer away from the first outer surface. The reflective layer is used to reflect infrared radiation and to transmit visible light. A pigment layer is disposed between the heat insulation layer and the reflective layer.

2. The battery device according to claim 1, characterized in that, The heat insulation layer includes a first substrate and a heat insulation filler, wherein the heat insulation filler is distributed in the first substrate.

3. The battery device according to claim 2, characterized in that, The heat insulation layer is a coating applied to the first outer surface, and the mass percentage of the first substrate is 52% to 73%. And / or, the heat insulation layer is a coating applied to the first outer surface, and the heat insulation filler accounts for 25% to 47% of the total mass.

4. The battery device according to claim 2, characterized in that, The heat insulation layer is a sheet-like membrane material, and the first substrate accounts for 80% to 90% of the mass. And / or, the heat insulation layer is a sheet-like membrane material, and the heat insulation filler accounts for 10% to 15% of the total mass.

5. The battery device according to claim 2, characterized in that, The heat insulation layer is a coating applied to the first outer surface, and the first substrate is any one or any combination of epoxy resin, fluorocarbon resin, and acrylic resin; or, the heat insulation layer is a sheet-like film material, and the first substrate is any one or any combination of alkyd resin, polyurethane resin, and acrylic resin.

6. The battery device according to claim 2, characterized in that, The thermal insulation filler includes silica aerogel and / or hollow glass microspheres.

7. The battery device according to claim 1, characterized in that, The reflective layer includes a second substrate and a reflective filler, wherein the reflective filler is distributed in the second substrate.

8. The battery device according to claim 7, characterized in that, The reflective layer is a coating, and the second substrate accounts for 43% to 85% of the total mass. And / or, the reflective layer is a coating, and the reflective filler accounts for 13% to 55% of the total mass.

9. The battery device according to claim 7, characterized in that, The reflective layer is a sheet-like film material, and the second substrate accounts for 73% to 85% of the mass. And / or, the reflective layer is a sheet-like film material, and the reflective filler accounts for 15% to 25% of the total mass.

10. The battery device according to claim 7, characterized in that, The reflective layer is a coating, and the second substrate includes any one or any combination of alkyd resin, waterborne polyurethane resin, and acrylate; or, the reflective layer is a sheet-like film, and the second substrate includes any one or any combination of alkyd resin, polyurethane resin, and acrylate resin.

11. The battery device according to claim 7, characterized in that, The reflective filler is made of a combination of ceramic powder of metal oxide and titanium dioxide.

12. The battery device according to claim 1, characterized in that, The pigment layer includes a third substrate and a color filler, wherein the color filler is distributed in the third substrate.

13. The battery device according to claim 12, characterized in that, The pigment layer is a coating, and the third substrate accounts for 55% to 65% of the total mass. And / or, the pigment layer is a coating, and the color filler accounts for 33% to 45% of the total mass.

14. The battery device according to claim 12, characterized in that, The pigment layer is a sheet-like film material, and the third substrate accounts for 67% to 80% of the total mass. And / or, the pigment layer is a sheet-like film material, and the color filler accounts for 20% to 30% by mass.

15. The battery device according to claim 12, characterized in that, The pigment layer is a coating, and the third substrate includes any one or any combination of epoxy resin, fluorocarbon resin, and acrylic resin; or, the pigment layer is a sheet-like film, and the third substrate includes any one or any combination of alkyd resin, polyurethane resin, and acrylic resin.

16. The battery device according to claim 1, characterized in that, The heat insulation layer is a sheet-like membrane material, and the protective layer structure includes an adhesive layer, which is bonded between the first outer surface and the heat insulation layer.

17. The battery device according to claim 16, characterized in that, The adhesive layer is made of pressure-sensitive adhesive or hot melt adhesive.

18. The battery device according to claim 1, characterized in that, The reflective layer is a sheet-like film material, and the protective layer structure includes a wear-resistant layer, which is disposed on the surface of the reflective layer away from the first outer surface.

19. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 18, wherein the battery device provides electrical energy to the electrical device.

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