Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment, the battery device comprises battery monomers and a heat insulation pad, the heat insulation pad is arranged between two adjacent battery monomers, the heat insulation pad comprises a first heat insulation layer, a second heat insulation layer and an anti-radiation unit, and the second heat insulation layer and the first heat insulation layer are arranged at an interval along a first direction; the anti-radiation unit is clamped between the second heat insulation layer and the first heat insulation layer; wherein the anti-radiation unit comprises at least two anti-radiation layers, all the anti-radiation layers are arranged in a stacked mode in the first direction, and all the anti-radiation layers comprise at least two different types of a metal reflection structure layer, a non-metal reflection structure layer and a non-metal absorption structure layer. The electric equipment comprises the battery device. According to the battery device and the electric equipment, a multi-stage attenuation path can be formed for heat radiation, and the inhibition effect on the heat radiation can be continuously maintained under the condition that the single anti-radiation layer fails, so that the use stability and the heat insulation property of the heat insulation pad are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and an electric equipment. BACKGROUND

[0002] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance capability and the like of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power source of new energy vehicles, are widely used.

[0003] In the long-term operation process of the battery device, the battery monomer is prone to thermal runaway due to volume expansion caused by factors such as charging and discharging cycles and environmental temperature changes. A heat insulation pad is generally provided in the battery device to directly suppress the spread of thermal runaway. However, the existing heat insulation pad has poor heat insulation performance under high temperature working conditions, which affects the suppression effect of the spread of thermal runaway. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a battery device and an electric equipment in view of the poor heat insulation performance of the existing heat insulation pad under high temperature working conditions.

[0005] A battery device includes a battery monomer and a heat insulation pad. The heat insulation pad is arranged between two adjacent battery monomers. The heat insulation pad includes a first heat insulation layer, a second heat insulation layer and an anti-radiation unit. The second heat insulation layer is arranged in a first direction with the first heat insulation layer. The anti-radiation unit is arranged between the second heat insulation layer and the first heat insulation layer. The anti-radiation unit includes at least two anti-radiation layers. All the anti-radiation layers are arranged in a first direction. The first direction is the thickness direction of the heat insulation pad. All the anti-radiation layers include at least two different types of metal reflective structure layer, non-metal reflective structure layer and non-metal absorption structure layer. The battery device described above has at least two anti-radiation layers arranged between the two heat insulation layers of the heat insulation pad. All the anti-radiation layers include at least two different types. The multi-stage attenuation path can be formed for thermal radiation. The suppression effect of the heat insulation pad on thermal radiation is improved. In the case of failure of a single anti-radiation layer, the suppression effect on thermal radiation can still be maintained. The use stability and heat insulation performance of the heat insulation pad are improved.

[0006] In some embodiments, the metal reflective structure layer is configured as an aluminum sheet, an aluminum plastic film or an aluminum foil structure with smooth surface and blackness ≤0.04. In this way, the metal reflective structure layer has strong reflection ability, which can suppress thermal radiation by using the metal reflective structure layer, thereby greatly improving the heat insulation performance of the heat insulation pad.

[0007] In some embodiments, the non-metallic reflective structure layer is configured as a white light-shielding film containing one of TiO2, ZnO, and Cu2O. In this way, the non-metallic reflective structure layer has high light-shielding properties, and can use the non-metallic reflective structure layer to inhibit thermal radiation, thereby enhancing the heat insulation performance of the heat insulation pad.

[0008] In some embodiments, the non-metallic absorbing structure layer is configured as a black light-shielding film containing one of SiC and NiO. In this way, the non-metallic absorbing structure layer has high light-absorbing properties, and can use the non-metallic absorbing structure layer to absorb thermal radiation to inhibit thermal radiation, thereby enhancing the heat insulation performance of the heat insulation pad.

[0009] In some embodiments, the thickness of the metallic reflective structure layer ranges from 0.01 mm to 1 mm. In this way, by limiting the thickness of the metallic reflective structure layer, the metallic reflective structure layer can reflect thermal radiation without occupying too much space in the thickness direction.

[0010] In some embodiments, the thickness of the non-metallic reflective structure layer ranges from 0.01 mm to 1 mm. In this way, by limiting the thickness of the non-metallic reflective structure layer, the non-metallic reflective structure layer can reflect thermal radiation without occupying too much space in the thickness direction.

[0011] In some embodiments, the thickness of the non-metallic absorbing structure layer ranges from 0.01 mm to 1 mm. In this way, by limiting the thickness of the non-metallic absorbing structure layer, the non-metallic absorbing structure layer can absorb thermal radiation without occupying too much space in the thickness direction.

[0012] In some embodiments, the anti-radiation unit includes a first sub-unit, and the first sub-unit includes two layers of anti-radiation layers arranged adjacent to each other in a first direction; one of the two layers of anti-radiation layers is a metallic reflective structure layer, and the other is a non-metallic reflective structure layer. In this way, the metallic reflective structure layer can provide a bearing body for the coating of the non-metallic reflective structure layer, facilitating the production and manufacture of the first sub-unit, and the first sub-unit includes two different types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, thereby improving the inhibition effect of the heat insulation pad on thermal radiation.

[0013] In some embodiments, the anti-radiation unit includes a first sub-unit, and the first sub-unit includes two layers of anti-radiation layers arranged adjacent to each other in a first direction; one of the two layers of anti-radiation layers is a metallic reflective structure layer, and the other is a non-metallic absorbing structure layer. In this way, the metallic reflective structure layer can provide a bearing body for the coating of the non-metallic absorbing structure layer, facilitating the production and manufacture of the first sub-unit, and the first sub-unit includes two different types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, thereby improving the inhibition effect of the heat insulation pad on thermal radiation.

[0014] In some embodiments, the number of first sub-units is at least two, and all the first sub-units are arranged in a stack along the first direction. In this way, the anti-radiation unit includes at least two first sub-units, and the thickness of the anti-radiation unit can be flexibly adjusted according to actual needs, so that the heat insulation pad meets different heat insulation needs.

[0015] In some embodiments, the anti-radiation unit includes a second sub-unit, and the second sub-unit includes a third heat insulation layer and two anti-radiation layers arranged in a stack along the first direction. In this way, the second sub-unit includes a heat insulation layer and two anti-radiation layers of different types, can form a multi-stage attenuation path for thermal radiation, further improve the inhibition effect of the heat insulation pad on thermal radiation, and can still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer.

[0016] In some embodiments, the third heat insulation layer is sandwiched between the two anti-radiation layers; one of the anti-radiation layers is a non-metallic reflection structure layer, and the other is a metallic reflection structure layer. In this way, the third heat insulation layer is sandwiched between two anti-radiation layers of different types, can form a multi-stage attenuation path for thermal radiation, and can still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer, improving the use stability and heat insulation of the heat insulation pad.

[0017] In some embodiments, the third heat insulation layer is sandwiched between the two anti-radiation layers; one of the anti-radiation layers is a non-metallic absorption structure layer, and the other is a metallic reflection structure layer. In this way, the third heat insulation layer is sandwiched between two anti-radiation layers of different types, can form a multi-stage attenuation path for thermal radiation, and can still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer, improving the use stability and heat insulation of the heat insulation pad.

[0018] In some embodiments, the third heat insulation layer is sandwiched between the two anti-radiation layers; one of the anti-radiation layers is a non-metallic absorption structure layer, and the other is a non-metallic reflection structure layer. In this way, the third heat insulation layer is sandwiched between two anti-radiation layers of different types, can form a multi-stage attenuation path for thermal radiation, and can still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer, improving the use stability and heat insulation of the heat insulation pad.

[0019] In some embodiments, the number of second sub-units is at least two, and all the second sub-units are arranged in a stack along the first direction. In this way, the anti-radiation unit includes at least two second sub-units, and the thickness of the anti-radiation unit can be flexibly adjusted according to actual needs, so that the heat insulation pad meets different heat insulation needs.

[0020] In some embodiments, the third thermal insulation layer is configured as an aerogel structure layer. In this way, the heat transfer can be inhibited by the aerogel structure layer, so as to improve the thermal insulation performance of the thermal insulation pad.

[0021] In some embodiments, the thickness of the third thermal insulation layer ranges from 0.1 mm to 5 mm. In this way, by limiting the thickness of the third thermal insulation layer, the heat transfer can be inhibited by the third thermal insulation layer without occupying too much space in the thickness direction.

[0022] A power consuming device comprising the battery device described above. The power consuming device described above, at least two anti-radiation layers are arranged between the two thermal insulation layers of the thermal insulation pad, and all the anti-radiation layers comprise at least two different types, which can form a multi-stage attenuation path for thermal radiation, improve the inhibition effect of the thermal insulation pad on thermal radiation, and still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer, thereby improving the use stability and thermal insulation performance of the thermal insulation pad. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A schematic view of a power consuming device in some embodiments of the present application.

[0024] Figure 2 A schematic view of a battery device in some embodiments of the present application.

[0025] Figure 3 A combined schematic view of a battery cell and a thermal insulation pad in some embodiments of the present application.

[0026] Figure 4 A schematic view of a thermal insulation pad in some embodiments of the present application.

[0027] Figure 5 A schematic view of a thermal insulation pad in some other embodiments of the present application.

[0028] Figure 6 A schematic view of a thermal insulation pad in some other embodiments of the present application.

[0029] Figure 7 A schematic view of a thermal insulation pad in some other embodiments of the present application.

[0030] REFERENCE SIGNS:

[0031] 10, vehicle; 11, controller; 12, motor; 20, battery device; 21, box body; 21a, first part; 21b, second part; 22, battery cell; 23, thermal insulation pad;

[0032] 100, first thermal insulation layer; 200, second thermal insulation layer; 300, anti-radiation unit; 301, first sub-unit; 302, second sub-unit; 310, anti-radiation layer; 320, third thermal insulation layer. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore, should not be used to limit the protection scope of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0036] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0038] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] With the popularity and promotion of new energy vehicles, the charging and discharging performance, endurance capability and the like of new energy vehicles are increasingly attracting people's attention and attention. The power battery, a kind of rechargeable battery, is the power source of new energy vehicles and is widely used in the field of new energy vehicles.

[0042] In the long-term operation process of the battery device, the battery monomer is easily affected by factors such as charging and discharging cycle and environmental temperature change to cause thermal runaway due to volume expansion. A heat insulation pad is generally arranged in the battery device to directly inhibit the expansion of thermal runaway. However, the existing heat insulation pad has poor heat insulation performance under high temperature working conditions, affecting the inhibition effect on the expansion of thermal runaway. In the related technology, only a heat insulation layer is arranged in the heat insulation pad, or an anti-radiation layer is additionally arranged on the basis of the heat insulation layer. The inhibition effect on thermal radiation is poor, and the inhibition effect on thermal radiation is lost in the case of failure of the single anti-radiation layer, and the use stability of the heat insulation pad is poor.

[0043] Based on the above consideration, after in-depth research, a battery device and a power utilization equipment are designed. At least two anti-radiation layers are arranged between the two heat insulation layers in the heat insulation pad, and all the anti-radiation layers are stacked along the thickness direction of the heat insulation pad. The incoming thermal radiation is inhibited by the heat insulation layer, and the thermal radiation is reflected and / or absorbed by the anti-radiation layer, so as to further inhibit the thermal radiation and reduce the convective heat transfer. Therefore, the heat insulation pad can also inhibit the thermal radiation conduction under high temperature working conditions, and the heat insulation performance of the heat insulation pad is improved.

[0044] The embodiments of the present application provide a power consumption device using a battery device as a power supply. The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft and the like. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric plane toy, and the spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft.

[0045] The following embodiments are described by taking a power consumption device of an embodiment of the present application as a vehicle 10 for convenience of description.

[0046] Please refer to Figure 1 The vehicle 10 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile. The vehicle 10 is internally provided with a battery device 20, which can be arranged at the bottom, the head or the tail of the vehicle 10. The battery device 20 can be used for power supply of the vehicle 10, for example, the battery device 20 can be used as an operating power supply of the vehicle 10. The vehicle 10 can further include a controller 11 and a motor 12, and the controller 11 is used to control the battery device 20 to supply power to the motor 12, for example, to meet the power demand of the vehicle 10 during starting, navigation and driving. In other embodiments of the present application, the battery device 20 can not only be used as an operating power supply of the vehicle 10, but also be used as a driving power supply of the vehicle 10, to replace or partially replace fuel or natural gas to provide driving force for the vehicle 10.

[0047] In some embodiments of the present application, the battery device 20 can not only be used as an operating power supply of the vehicle 10, but also be used as a driving power supply of the vehicle 10, to replace or partially replace fuel or natural gas to provide driving force for the vehicle 10.

[0048] Please refer to Figure 2The battery device 20 includes a box 21 and battery cells 22 accommodated in the box 21. The box 21 is configured to provide an accommodation space for the battery cells 22, and can have various structures. In some embodiments, the box 21 can include a first part 21a and a second part 21b, which are coupled to each other to define the accommodation space for the battery cells 22. The second part 21b can be a hollow structure with one open end, and the first part 21a can be a plate structure, which is coupled to the open end of the second part 21b to define the accommodation space together with the second part 21b. Alternatively, the first part 21a and the second part 21b can both be hollow structures with one open end, and the open end of the first part 21a is coupled to the open end of the second part 21b. Of course, the box 21 formed by the first part 21a and the second part 21b can have various shapes, such as a cylinder or a cuboid.

[0049] In the battery device 20, the battery cells 22 can be multiple, and the multiple battery cells 22 can be connected in series, in parallel, or in a mixed manner. The mixed manner means that the multiple battery cells 22 are connected in series and in parallel. The multiple battery cells 22 can be directly connected in series, in parallel, or in a mixed manner, and then the multiple battery cells 22 are accommodated in the box 21. Alternatively, the multiple battery cells 22 can be connected in series, in parallel, or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, in parallel, or in a mixed manner to form a whole, which is accommodated in the box 21.

[0050] Each battery cell 22 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 22 can have a cylindrical shape, a flat shape, a cuboid shape, or other shapes. The battery cell 22 can include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, and the embodiments of the present application are not limited thereto. The battery cell 22 can have a cylindrical shape, a flat shape, a cuboid shape, or other shapes, and the embodiments of the present application are not limited thereto.

[0051] Please refer to Figure 3 In the battery device 20, the thermal insulation pad 23 can be arranged between the multiple battery cells 22 and the top wall of the box 21, between the multiple battery cells 22 and the bottom wall of the box 21, between the bottom wall of the box 21 and the bottom guard plate, or between two adjacent battery cells 22, to provide thermal insulation for the multiple battery cells 22.

[0052] Please refer to Figure 4The battery device 20 in an embodiment includes battery cells 22 and a thermal insulation pad 23 arranged between two adjacent battery cells 22, the thermal insulation pad 23 including a first thermal insulation layer 100, a second thermal insulation layer 200, and an anti-radiation unit 300, the second thermal insulation layer 200 being arranged in a first direction away from the first thermal insulation layer 100, and the anti-radiation unit 300 being arranged between the second thermal insulation layer 200 and the first thermal insulation layer 100; wherein the anti-radiation unit 300 includes at least two anti-radiation layers 310, and all the anti-radiation layers 310 are arranged in a first direction, the first direction being a thickness direction of the thermal insulation pad 23, and all the anti-radiation layers 310 include at least two different types of metal reflective structure layer, non-metal reflective structure layer, and non-metal absorption structure layer.

[0053] It should be noted that the first direction is the Z direction shown in the figure, that is, the thickness direction of the thermal insulation pad 23. All the anti-radiation layers 310 are arranged in the first direction, that is, all the anti-radiation layers 310 can be adjacent or spaced apart in the first direction. Figure 4

[0054] Here, all the anti-radiation layers 310 include at least two different types of metal reflective structure layer, non-metal reflective structure layer, and non-metal absorption structure layer, that is, all the anti-radiation layers 310 can be any two or all of the metal reflective structure layer, non-metal reflective structure layer, and non-metal absorption structure layer.

[0055] In an embodiment of the present application, the first thermal insulation layer 100 is a component for inhibiting the transfer of heat, and the first thermal insulation layer 100 can be selected from a thermal insulation material with low thermal conductivity and high heat resistance temperature. Preferably, the thermal insulation material is aerogel, and the type of aerogel can be any one of basalt fiber reinforced aerogel, glass fiber reinforced aerogel, ceramic fiber reinforced aerogel, and pre-oxidized fiber reinforced aerogel.

[0056] In an embodiment of the present application, the second thermal insulation layer 200 is a component for inhibiting the transfer of heat, and the second thermal insulation layer 200 can be selected from a thermal insulation material with low thermal conductivity and high heat resistance temperature. Preferably, the thermal insulation material is aerogel, and the type of aerogel can be any one of basalt fiber reinforced aerogel, glass fiber reinforced aerogel, ceramic fiber reinforced aerogel, and pre-oxidized fiber reinforced aerogel.

[0057] In an embodiment of the present application, the anti-radiation unit 300 includes at least two anti-radiation layers 310, and the anti-radiation layer 310 is a component for further reducing the transfer of heat by reflecting or absorbing radiation, and the anti-radiation layer 310 can be selected from a material with high infrared radiation emissivity.

[0058] ​It should be noted that the at least one of the metal reflective structure layer, the non-metal reflective structure layer and the non-metal absorbing structure layer, namely, any one of the metal reflective structure layer, the non-metal reflective structure layer and the non-metal absorbing structure layer, or any two of them, or all of them.

[0059] In the embodiments of the present application, the metal reflective structure layer is a component for further reducing heat transfer by utilizing the optical properties of metal materials to reflect light. The metal reflective structure layer is generally in a sheet structure. The metal reflective structure layer includes a metal sheet layer and a substrate. The metal sheet layer is the main part of the radiation reflection, and the substrate is used to support the metal sheet layer. Commonly used metal materials of the metal sheet layer include aluminum, silver, gold and the like.

[0060] In the embodiments of the present application, the non-metal reflective structure layer is a component for further reducing heat transfer by utilizing the optical properties or special structure of non-metal materials to reflect light. The non-metal reflective structure layer is generally in a film structure formed by solidifying non-metal materials. The non-metal materials can be inorganic non-metal materials, polymer materials or composite materials with high reflectivity.

[0061] In the embodiments of the present application, the non-metal absorbing structure layer is a component for further reducing heat transfer by utilizing the optical properties or special structure of non-metal materials to absorb light. The non-metal absorbing structure layer is generally in a film structure formed by solidifying non-metal materials. The non-metal materials can be inorganic non-metal materials, polymer materials or composite materials with high absorption.

[0062] The battery device 20 described above is provided with at least two layers of anti-radiation layers 310 stacked between the two heat insulation layers of the heat insulation pad 23, and all the anti-radiation layers 310 include at least two different types, which can form a multi-stage attenuation path for thermal radiation, improve the inhibition effect of the heat insulation pad 23 on thermal radiation, and still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer 310, thereby improving the use stability and heat insulation of the heat insulation pad 23.

[0063] According to some embodiments of the present application, referring to Figure 4 The metal reflective structure layer is configured as an aluminum sheet, an aluminum plastic film or an aluminum foil structure with smooth surface and blackness ≤0.04.

[0064] It should be noted that the blackness is an index indicating the light absorption capacity of a material. The smaller the blackness, the smaller the light absorption capacity of the material, and the stronger the light reflection capacity; the larger the blackness, the larger the light absorption capacity of the material, and the weaker the light reflection capacity.

[0065] In the embodiments of the present application, the smooth surface refers to that the microstructure of the material surface is very flat and has no obvious concave-convex. The aluminum sheet, aluminum plastic film or aluminum foil structure with a smooth surface and a blackness of ≤0.04 has a strong reflection ability to light and a weak absorption ability.

[0066] Through the above arrangement, the metal reflective structure layer has a strong reflection ability, and can suppress thermal radiation by using the metal reflective structure layer, thereby greatly improving the heat insulation performance of the heat insulation pad 23.

[0067] According to some embodiments of the present application, please refer to Figure 4 , the non-metal reflective structure layer is configured as a white light-shielding film containing one of TiO2, ZnO and Cu2O.

[0068] In the embodiments of the present application, TiO2 is highly transparent in the visible light spectrum region and has good light stability, effectively reflecting light; ZnO reflects ultraviolet light outside the film by physical scattering, reducing the penetration of ultraviolet light; Cu2O has high reflectivity, effectively reflecting light and reducing light penetration.

[0069] Through the above arrangement, the non-metal reflective structure layer has high light-shielding property, and can suppress thermal radiation by using the non-metal reflective structure layer, thereby strengthening the heat insulation performance of the heat insulation pad 23.

[0070] According to some embodiments of the present application, please refer to Figure 4 , the non-metallic absorption structure layer is configured as a black light-shielding film containing one of SiC and NiO.

[0071] In the embodiments of the present application, SiC has a high light absorption rate and effectively absorbs light; NiO shows a high absorption rate in the visible light region, enhancing the absorption and scattering of light.

[0072] Through the above arrangement, the non-metallic absorption structure layer has a high light absorption rate, and can absorb thermal radiation by using the non-metallic absorption structure layer to suppress thermal radiation, thereby strengthening the heat insulation performance of the heat insulation pad 23.

[0073] According to some embodiments of the present application, please refer to Figure 4 , the thickness of the metal reflective structure layer ranges from 0.01mm to 1mm.

[0074] It should be noted that the thickness of the metal reflective structure layer, that is, the size of the metal reflective structure layer in the Z direction shown in Figure 4 . The greater the thickness of the metal reflective structure layer, the better the suppression effect on thermal radiation, but the more space occupied in the thickness direction.

[0075] In the embodiments of the present application, the thickness of the metal reflective structure layer can be 0.01mm, 0.05mm or 1mm.

[0076] By setting the above parameters and limiting the thickness of the metal reflective structure layer, thermal radiation can be reflected by the metal reflective structure layer without occupying too much space in the thickness direction.

[0077] Based on some embodiments in this application, please refer to Figure 4 The thickness of the non-metallic reflective structure layer ranges from 0.01 mm to 1 mm.

[0078] It should be noted that the thickness of the non-metallic reflective structure layer, that is, the thickness of the non-metallic reflective structure layer in... Figure 4 The dimensions in the Z direction are shown. The greater the thickness of the non-metallic reflective structure layer, the better the suppression effect on thermal radiation, but the more space it occupies in the thickness direction.

[0079] In the embodiments of this application, the thickness of the non-metallic reflective structure layer can be 0.01 mm, 0.05 mm, or 1 mm.

[0080] By setting the above parameters and limiting the thickness of the non-metallic reflective structure layer, thermal radiation can be reflected using the non-metallic reflective structure layer without occupying too much space in the thickness direction.

[0081] Based on some embodiments in this application, please refer to Figure 4 The thickness of the non-metallic absorbing structure layer ranges from 0.01 mm to 1 mm.

[0082] It should be noted that the thickness of the non-metallic absorbing structure layer, that is, the thickness of the non-metallic absorbing structure layer in... Figure 5 The dimensions in the Z direction are shown. The greater the thickness of the non-metallic absorbing structure layer, the better the suppression effect on thermal radiation, but the more space it occupies in the thickness direction.

[0083] In the embodiments of this application, the thickness of the non-metallic absorbing structure layer can be 0.01 mm, 0.05 mm, or 1 mm.

[0084] By setting the above parameters and limiting the thickness of the non-metallic absorbing structure layer, thermal radiation can be absorbed by the non-metallic absorbing structure layer without occupying too much space in the thickness direction.

[0085] Based on some embodiments in this application, please refer to Figure 5 The radiation-resistant unit 300 includes a first subunit 301, which includes two radiation-resistant layers 310 stacked adjacent to each other along a first direction; one radiation-resistant layer 310 is a metal reflective structure layer, and the other radiation-resistant layer 310 is a non-metal reflective structure layer.

[0086] It should be noted that the two radiation-resistant layers 310 are stacked adjacently along the first direction, that is, the two radiation-resistant layers 310 are in contact with each other in the first direction.

[0087] In some embodiments of the present application, the first sub-unit 301 comprises two layers of anti-radiation layers 310 arranged in a stack along a first direction, one of the two layers of anti-radiation layers 310 is a metal reflective structure layer, and the other is a non-metal reflective structure layer. In the production process, the metal reflective structure layer is a sheet-shaped structure that has been formed, and the non-metal reflective structure layer is a reflective coating that needs to be coated and then solidified. The non-metal reflective structure can be coated on the surface of the metal reflective structure layer and then solidified to form. Then, the first sub-unit 301 is assembled with other components.

[0088] In some embodiments of the present application, in the first sub-unit 301, the stacking order of the metal reflective structure layer and the non-metal reflective structure layer is not limited. The metal reflective structure layer can be above the non-metal reflective structure layer, or the metal reflective structure layer can be below the non-metal reflective structure layer. The thickness, shape, and type of the metal reflective structure layer and the non-metal reflective structure layer can be the same or different, which is not specifically limited here.

[0089] Through the above arrangement, the metal reflective structure layer can provide a bearing body for the coating of the non-metal reflective structure layer, facilitating the production and manufacturing of the first sub-unit 301. In addition, the first sub-unit 301 comprises two types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, thereby improving the inhibition effect of the thermal insulation pad 23 on thermal radiation.

[0090] According to some embodiments of the present application, please refer to Figure 5 , the anti-radiation unit 300 comprises a first sub-unit 301, and the first sub-unit 301 comprises two layers of anti-radiation layers 310 arranged in a stack along a first direction. One of the two layers of anti-radiation layers 310 is a metal reflective structure layer, and the other is a non-metal absorption structure layer.

[0091] In some embodiments of the present application, the first sub-unit 301 comprises two layers of anti-radiation layers 310 arranged in a stack along a first direction, one of the two layers of anti-radiation layers 310 is a metal reflective structure layer, and the other is a non-metal absorption structure layer. In the production process, the metal reflective structure layer is a sheet-shaped structure that has been formed, and the non-metal absorption structure layer is a reflective coating that needs to be coated and then solidified. The non-metal absorption structure can be coated on the surface of the metal reflective structure layer and then solidified to form. Then, the first sub-unit 301 is assembled with other components.

[0092] In the embodiments of the present application, the stacking order of the metal reflective structure layer and the non-metallic absorption structure layer in the first sub-unit 301 is not limited, and the metal reflective structure layer can be located above the non-metallic absorption structure layer, or the metal reflective structure layer can be located below the non-metallic absorption structure layer. The thickness, shape and type of the metal reflective structure layer and the non-metallic absorption structure layer can be completely the same or different, which is not specifically limited here.

[0093] Through the above setting, the metal reflective structure layer can provide a bearing body for the coating of the non-metallic absorption structure layer, facilitating the production and manufacturing of the first sub-unit 301, and the first sub-unit 301 includes two types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, thereby improving the inhibition effect of the heat insulation pad 23 on thermal radiation.

[0094] According to some embodiments of the present application, please refer to Figure 4 , the number of the first sub-units 301 is at least two, and all the first sub-units 301 are adjacently stacked along the first direction.

[0095] In the embodiments of the present application, all the first sub-units 301 are adjacently stacked along the first direction, that is, all the first sub-units 301 contact each other in the first direction.

[0096] Through the above setting, the anti-radiation unit 300 includes at least two first sub-units 301, which can flexibly adjust the thickness of the anti-radiation unit 300 according to actual needs, so that the heat insulation pad 23 meets different heat insulation needs.

[0097] According to some embodiments of the present application, please refer to Figure 6 , Figure 7 and Figure 6 , the anti-radiation unit 300 includes a second sub-unit 302, and the second sub-unit 302 includes one layer of third heat insulation layer 320 and two layers of anti-radiation layer 310 adjacently stacked along the first direction.

[0098] It should be noted that one layer of third heat insulation layer 320 and two layers of anti-radiation layer 310 are adjacently stacked along the first direction, that is, one layer of third heat insulation layer 320 and two layers of anti-radiation layer 310 contact each other in the first direction. In the embodiments of the present application, the stacking order of one layer of third heat insulation layer 320 and two layers of anti-radiation layer 310 in the second sub-unit 302 is not limited, and the third heat insulation layer 320 can be located above the anti-radiation layer 310 in the first direction, or the third heat insulation layer 320 can be located below the anti-radiation layer 310 in the first direction. The thickness, shape of one layer of third heat insulation layer 320 and two layers of anti-radiation layer 310 can be completely the same or different, which is not specifically limited here.

[0099] In the embodiments of the present application, the third thermal insulation layer 320 is a component for inhibiting the transmission of heat, and the third thermal insulation layer 320 can be made of a thermal insulation material with low thermal conductivity and high heat resistance.

[0100] Through the above arrangement, the second subunit 302 includes a thermal insulation layer and two different types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, further improve the inhibition effect of the thermal insulation pad 23 on thermal radiation, and still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer 310.

[0101] According to some embodiments of the present application, please refer to Figure 7 and Figure 6 The third thermal insulation layer 320 is sandwiched between the two anti-radiation layers 310; one of the anti-radiation layers 310 is a non-metallic reflective structure layer, and the other is a metallic reflective structure layer.

[0102] In the embodiments of the present application, the third thermal insulation layer 320 has a first surface and a second surface arranged in opposite directions along a first direction. In the production process, the non-metallic reflective structure layer is a reflective coating that needs to be coated and then solidified, and the metallic reflective structure layer is a sheet-shaped structure that has been formed. The non-metallic reflective structure can be coated on the first surface of the third thermal insulation layer 320 and then solidified and formed, and the metallic reflective structure layer is combined with the second surface of the third thermal insulation layer 320. Then, the second subunit 302 is assembled with other components.

[0103] In the embodiments of the present application, in the second subunit 302, the stacking order of the non-metallic reflective structure layer and the metallic reflective structure layer is not limited. The non-metallic reflective structure layer can be located above the third thermal insulation layer 320, and the metallic reflective structure layer can be located below the third thermal insulation layer 320. Alternatively, the non-metallic reflective structure layer can be located below the third thermal insulation layer 320, and the metallic reflective structure layer can be located above the third thermal insulation layer 320. The thickness, shape and type of the third thermal insulation layer 320, the non-metallic reflective structure layer and the metallic reflective structure layer can be the same or different, which is not specifically limited here.

[0104] Through the above arrangement, the third thermal insulation layer 320 is sandwiched between the two different types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, and still maintain the inhibition effect on thermal radiation in the case of failure of a single anti-radiation layer 310, thereby improving the use stability and thermal insulation of the thermal insulation pad 23.

[0105] According to some embodiments of the present application, please refer to Figure 7 and Figure 6The third thermal insulation layer 320 is arranged between the two anti-radiation layers 310. One of the two anti-radiation layers 310 is a non-metallic absorption structure layer, and the other is a metallic reflection structure layer.

[0106] In the embodiments of the present application, the third thermal insulation layer 320 has a first surface and a second surface arranged opposite to each other along the first direction. In the production process, the non-metallic absorption structure layer is a reflective coating that needs to be coated and then solidified, and the metallic reflection structure layer is a sheet-shaped structure that has been formed. The non-metallic absorption structure can be coated on the first surface of the third thermal insulation layer 320 and then solidified and formed, and the metallic reflection structure layer is combined with the second surface of the third thermal insulation layer 320. Then, the second sub-unit 302 is assembled with other components.

[0107] In the embodiments of the present application, the stacking order of the non-metallic absorption structure layer and the metallic reflection structure layer in the second sub-unit 302 is not limited. The non-metallic absorption structure layer can be located above the third thermal insulation layer 320, and the metallic reflection structure layer can be located below the third thermal insulation layer 320. Alternatively, the non-metallic absorption structure layer can be located below the third thermal insulation layer 320, and the metallic reflection structure layer can be located above the third thermal insulation layer 320. The thickness, shape, and type of the third thermal insulation layer 320, the non-metallic absorption structure layer, and the metallic reflection structure layer can be the same or different, which is not limited here.

[0108] Through the above arrangement, the third thermal insulation layer 320 is arranged between the two different types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation. In the case of failure of a single anti-radiation layer 310, the inhibitory effect on thermal radiation can still be maintained, thereby improving the use stability and thermal insulation of the thermal insulation pad 23.

[0109] According to some embodiments of the present application, please refer to Figure 7 and Figure 6 The third thermal insulation layer 320 is arranged between the two anti-radiation layers 310. One of the two anti-radiation layers 310 is a non-metallic absorption structure layer, and the other is a non-metallic reflection structure layer.

[0110] In the embodiments of the present application, the third thermal insulation layer 320 has a first surface and a second surface arranged opposite to each other along the first direction. In the production process, the non-metallic absorption structure layer is a reflective coating that needs to be coated and then solidified, and the non-metallic reflection structure layer is a reflective coating that needs to be coated and then solidified. The non-metallic absorption structure can be coated on the first surface of the third thermal insulation layer 320 and then solidified and formed, and the non-metallic reflection structure can be coated on the second surface of the third thermal insulation layer 320 and then solidified and formed. Then, the second sub-unit 302 is assembled with other components.

[0111] In the embodiments of the present application, in the second sub-unit 302, the stacking order of the non-metallic absorption structure layer and the non-metallic reflection structure layer is not limited, and the non-metallic absorption structure layer can be located above the third thermal insulation layer 320, and the non-metallic reflection structure layer is located below the third thermal insulation layer 320; or the non-metallic absorption structure layer can be located below the third thermal insulation layer 320, and the non-metallic reflection structure layer is located above the third thermal insulation layer 320. The thickness, shape and type of the third thermal insulation layer 320, the non-metallic absorption structure layer and the non-metallic reflection structure layer can be completely the same or different, which is not limited here.

[0112] Through the above setting, the third thermal insulation layer 320 is sandwiched between two different types of anti-radiation layers, which can form a multi-stage attenuation path for thermal radiation, and can still maintain the inhibition effect on thermal radiation in the case of failure of the single-layer anti-radiation layer 310, thereby improving the use stability and thermal insulation of the thermal insulation pad 23.

[0113] According to some embodiments of the present application, please refer to Figure 7 and Figure 6 The number of second sub-units 302 is at least two, and all the second sub-units 302 are arranged adjacent to each other in the first direction.

[0114] In the embodiments of the present application, all the second sub-units 302 are arranged adjacent to each other in the first direction, that is, all the second sub-units 302 contact each other in the first direction.

[0115] Through the above setting, the anti-radiation unit 300 includes at least two second sub-units 302, which can flexibly adjust the thickness of the anti-radiation unit 300 according to actual needs, so that the thermal insulation pad 23 meets different thermal insulation needs.

[0116] According to some embodiments of the present application, please refer to Figure 7 and Figure 6 The third thermal insulation layer 320 is configured as an aerogel structure layer.

[0117] In the embodiments of the present application, the type of aerogel can be any one of basalt fiber reinforced aerogel, glass fiber reinforced aerogel, ceramic fiber reinforced aerogel, and pre-oxidized fiber reinforced aerogel.

[0118] Through the above setting, the heat transfer can be inhibited by using the aerogel structure layer, which is beneficial to improve the thermal insulation performance of the thermal insulation pad 23.

[0119] According to some embodiments of the present application, please refer to Figure 7 and Figure 1 The thickness of the third thermal insulation layer 320 ranges from 0.1 mm to 5 mm.

[0120] It should be noted that the thickness of the third thermal insulation layer 320, i.e. the size of the third thermal insulation layer 320 in the thickness direction, is greater, the better the inhibitory effect on heat radiation, but the more space occupied in the thickness direction. Figures 3 to 7 and Figure 1 the size in the Z direction. The greater the thickness of the third thermal insulation layer 320, the better the inhibitory effect on heat radiation, but the more space occupied in the thickness direction.

[0121] In an embodiment of the present application, the thickness of the third thermal insulation layer 320 can be 0.01mm, 0.05mm or 1mm.

[0122] Through the above arrangement, by limiting the thickness of the third thermal insulation layer 320, heat transfer can be inhibited by the third thermal insulation layer 320, and excessive space is not occupied in the thickness direction.

[0123] Please refer to Figure 2 , the power consuming device in an embodiment includes the battery device 20 described above.

[0124] The power consuming device described above, at least two layers of anti-radiation layers 310 are arranged between the two thermal insulation layers of the thermal insulation pad 23, and all the anti-radiation layers 310 include at least two different types, which can form a multi-stage attenuation path for heat radiation, improve the inhibitory effect of the thermal insulation pad 23 on heat radiation, and still maintain the inhibitory effect on heat radiation in the case of single anti-radiation layer 310 failure, improve the use stability and thermal insulation of the thermal insulation pad 23.

[0125] According to some embodiments of the present application, refer to ​ , the thermal insulation pad 23 in an embodiment includes a first thermal insulation layer 100, a second thermal insulation layer 200 and an anti-radiation unit 300, the second thermal insulation layer 200 and the first thermal insulation layer 100 are arranged along the first direction, and the radiation unit is arranged between the second thermal insulation layer 200 and the first thermal insulation layer 100; the anti-radiation unit 300 includes at least two layers of anti-radiation layers 310 arranged along the first direction, the first direction is the thickness direction of the thermal insulation pad 23, all the anti-radiation layers 310 include at least two different types of metal reflective structure layer, non-metal reflective structure layer and non-metal absorption structure layer, the thickness of the metal reflective structure layer ranges from 0.01mm to 1mm, the thickness of the non-metal reflective structure layer ranges from 0.01mm to 1mm, and the thickness of the non-metal absorption structure layer ranges from 0.01mm to 1mm.

[0126] The anti-radiation unit 300 comprises a first sub-unit 301, the first sub-unit 301 comprises two layers of anti-radiation layers 310 which are arranged in a stack along a first direction; one of the two layers of anti-radiation layers 310 is a metal reflection structure layer, and the other is a non-metal reflection structure layer or a non-metal absorption structure layer; or the anti-radiation unit 300 comprises a second sub-unit 302, the second sub-unit 302 comprises one third thermal insulation layer 320 and two layers of anti-radiation layers 310 which are arranged in a stack along the first direction, the third thermal insulation layer 320 is configured as an aerogel structure layer, and the thickness of the third thermal insulation layer 320 ranges from 0.1mm to 5mm.

[0127] According to some embodiments of the present application, referring to ​ and ​ the power consumption device in an embodiment comprises the battery device 20 described above.

[0128] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device (20) characterized by, The application relates to a battery module (22) and a heat insulation pad (23) arranged between two adjacent battery modules (22), the heat insulation pad comprising a first heat insulation layer (100), a second heat insulation layer (200) and an anti-radiation unit (300), the second heat insulation layer (200) being arranged in a first direction and spaced apart from the first heat insulation layer (100), and the anti-radiation unit (300) being arranged between the second heat insulation layer (200) and the first heat insulation layer (100). The anti-radiation unit (300) comprises at least two anti-radiation layers (310), and all the anti-radiation layers (310) are arranged in a first direction and stacked, the first direction being the thickness direction of the heat insulation pad (23), and all the anti-radiation layers (310) comprise at least two different structures of a metal reflective structure layer, a non-metal reflective structure layer and a non-metal absorption structure layer. The metal reflective structure layer is configured as an aluminum sheet, an aluminum plastic film or an aluminum foil structure with smooth surface and blackness less than or equal to 0.

04. The non-metal reflective structure layer is configured as a white light-shielding film containing one of TiO2, ZnO and Cu2O. The non-metal absorption structure layer is configured as a black light-shielding film containing one of SiC and NiO.

2. The battery device (20) according to claim 1, characterized in that The thickness of the metal reflective structure layer ranges from 0.01 mm to 1 mm.

3. The battery device (20) according to claim 1, characterized in that The thickness of the non-metal reflective structure layer ranges from 0.01 mm to 1 mm.

4. The battery device (20) according to claim 1, characterized in that The thickness of the non-metal absorption structure layer ranges from 0.01 mm to 1 mm.

5. The battery device (20) according to claim 1, characterized in that The anti-radiation unit (300) comprises a first subunit (301), and the first subunit (301) comprises two anti-radiation layers (310) arranged in the first direction and stacked.

6. The battery device (20) according to claim 1, characterized in that One of the anti-radiation layers (310) is a metal reflective structure layer, and the other is a non-metal reflective structure layer.

7. The battery device (20) according to claim 1, characterized in that The anti-radiation unit (300) comprises a first subunit (301), and the first subunit (301) comprises two anti-radiation layers (310) arranged in the first direction and stacked.

8. The battery device (20) according to claim 1, characterized in that One of the anti-radiation layers (310) is a metal reflective structure layer, and the other is a non-metal absorption structure layer. The number of the first subunits (301) is at least two, and all the first subunits (301) are arranged in the first direction and stacked.

9. The battery device (20) according to claim 1, characterized in that The anti-radiation unit (300) comprises a second subunit (302), and the second subunit (302) comprises a third heat insulation layer (320) and two anti-radiation layers (310) arranged in the first direction and stacked. The third heat insulation layer (320) is arranged between the two anti-radiation layers (310).

10. The battery arrangement (20) according to claim 8 or 9, characterized in that One of the anti-radiation layers (310) is a non-metal reflective structure layer, and the other is a metal reflective structure layer.

11. The battery device (20) according to claim 1, characterized in that The third heat insulation layer (320) is arranged between the two anti-radiation layers (310).

12. The battery device (20) according to claim 11, characterized in that One of the anti-radiation layers (310) is a non-metal absorption structure layer, and the other is a metal reflective structure layer. ​ 13. The battery device (20) according to claim 11, characterized in that ​ ​ 14. The battery device (20) according to claim 11, characterized in that The third thermal insulation layer (320) is arranged between two layers of the anti-radiation layer (310); One of the anti-radiation layers (310) is a non-metallic absorption structure layer, and the other of the anti-radiation layers (310) is a non-metallic reflection structure layer.

15. The battery device (20) of claim 11, characterized by The number of the second sub-units (302) is at least two, and all the second sub-units (302) are arranged in adjacent layers along the first direction.

16. The battery device (20) of claim 11, characterized by The third thermal insulation layer (320) is configured as an aerogel structure layer.

17. The battery device (20) of claim 11, characterized by The thickness of the third thermal insulation layer (320) ranges from 0.1 mm to 5 mm.

18. An electrical device, characterized by The battery device (20) according to any one of claims 1-17.

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