CN220796762U - Battery pack, packaging structure thereof and photovoltaic system - Google Patents

Abstract

The application is suitable for the technical field of solar cells, and provides a cell assembly, a packaging structure thereof and a photovoltaic system. The packaging structure of the battery assembly is used for covering the battery piece of the battery assembly, the packaging structure comprises a battery area and a non-battery area, the packaging structure of the battery area is different from the packaging structure of the non-battery area in color, and the stacking color of the packaging structure of the battery area and the battery piece is the same as the color of the packaging structure of the non-battery area under the condition that the packaging structure of the battery area covers the battery piece. Therefore, the consistency of the film color of the battery assembly can be improved, and the visual effect of the battery assembly is better. Moreover, the light transmittance of the packaging structure of the battery area can be ensured, so that the power of the battery assembly is ensured.

Description

Battery pack, packaging structure thereof and photovoltaic system

Technical Field

The application belongs to the technical field of solar cells, and particularly relates to a battery assembly, a packaging structure thereof and a photovoltaic system.

Background

Solar cell power generation is a sustainable clean energy source that uses the photovoltaic effect of semiconductor p-n junctions to convert sunlight into electrical energy. And after the plurality of solar cells are connected and packaged, a cell assembly is formed.

In the related art, the packaging structure of the battery assembly is designed uniformly on the whole surface, and the patterned distribution is not generated, so that the area provided with the battery piece is obviously different from the area not provided with the battery piece, and the consistency of the film color of the battery assembly is poor.

Based on this, how to improve the uniformity of the film color of the battery assembly becomes a problem to be solved.

Disclosure of utility model

The application provides a battery assembly, a packaging structure thereof and a photovoltaic system, and aims to solve the problem of how to improve the consistency of the film colors of the battery assembly.

The packaging structure of the battery assembly provided by the application is used for covering the battery piece of the battery assembly, the packaging structure comprises a battery area and a non-battery area, the packaging structure of the battery area is different from the packaging structure of the non-battery area in color, and when the packaging structure of the battery area covers the battery piece, the lamination color of the packaging structure of the battery area and the battery piece is the same as the color of the packaging structure of the non-battery area.

Optionally, the package structure includes a package base, and the package base of the battery area is different from the package base of the non-battery area in color, and in a case that the package base of the battery area covers a battery piece, a lamination color of the package base of the battery area and the battery piece is the same as a color of the package base of the non-battery area.

Optionally, the packaging structure includes a packaging substrate and a color-changing layer, where the color of the packaging substrate of the battery area is the same as the color of the packaging substrate of the non-battery area, and the color-changing layer is disposed on the packaging substrate of the non-battery area, and in the case that the packaging substrate of the battery area covers the battery piece, the color-changing layer sets the color of the packaging substrate of the non-battery area to be the same as the lamination color of the packaging substrate of the battery area and the battery piece.

Optionally, the packaging substrate comprises at least one of a transparent front plate, a back plate and a packaging adhesive layer of the battery component.

Optionally, the boundary of the color changing layer overlaps the boundary of the battery region.

Optionally, the boundary of the color modifying layer is located at least partially within the boundary of the cell region.

Optionally, the boundary of the color-changing layer is located outside the boundary of the battery region.

Optionally, the color-changing layer comprises at least one of a color-changing glaze layer, a color-changing ink layer and a color-changing sheet layer.

Optionally, the color modifying layer is located on the inner side and/or the outer side of the package substrate.

Optionally, the non-battery area includes a frame area and a non-frame area, the frame area is covered by the frame of the battery assembly, and the color-changing layer is disposed in the non-frame area.

The battery assembly provided by the application comprises a battery piece and the packaging structure of the battery assembly.

The photovoltaic system provided by the application comprises the battery assembly.

According to the battery component, the packaging structure and the photovoltaic system of the battery component, the packaging structure of the battery area is the same as the lamination color of the battery piece when the battery piece is covered and the packaging structure of the non-battery area, so that the consistency of the film color of the battery component can be improved, and the visual effect of the battery component is better. In addition, the packaging structure of the battery area and the packaging structure of the non-battery area have different colors, so that the front light transmittance or the back light reflectance of the packaging structure of the battery area can be ensured, and the power of the battery assembly is improved.

Drawings

Fig. 1 is a schematic view of a battery assembly according to an embodiment of the present application;

fig. 2 is a schematic view of a part of the structure of a package structure of a battery pack according to an embodiment of the present application;

fig. 3 is a schematic view of a part of the structure of a package structure of a battery pack according to an embodiment of the present application;

Fig. 4 is a schematic view of a part of the structure of a package structure of a battery pack according to an embodiment of the present application;

Description of main reference numerals:

Battery assembly 1000, package structure 100, package base 10, battery region 11, non-battery region 12, frame region 121, non-frame region 122, color modifying layer 20, and frame 200.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present application.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize applications of other processes and/or usage scenarios for other materials.

In the application, the packaging structure of the battery area is the same as the lamination color of the battery piece when the battery piece is covered and the packaging structure of the non-battery area, so that the consistency of the film color of the battery component can be improved, and the visual effect of the battery component is better. Moreover, the packaging structure of the battery area and the packaging structure of the non-battery area are different in colors, so that the light transmittance of the packaging structure of the battery area can be ensured, and the power of the battery assembly is ensured.

Example 1

Referring to fig. 1 and 2, a package structure 100 of a battery assembly 1000 according to an embodiment of the application is used for covering a battery piece of the battery assembly 1000, the package structure 100 includes a battery area 11 and a non-battery area 12, the package structure 100 of the battery area 11 is different from the package structure 100 of the non-battery area 12 in color, and in a case that the package structure 100 of the battery area 11 covers the battery piece, the stacked color of the package structure 100 of the battery area 11 and the battery piece is the same as the color of the package structure 100 of the non-battery area 12.

In the package structure 100 of the battery assembly 1000 according to the embodiment of the application, the package structure 100 of the battery area 11 has the same lamination color as the battery piece when covering the battery piece and the package structure 100 of the non-battery area 12, so that the consistency of the film color of the battery assembly 1000 can be improved, and the visual effect of the battery assembly 1000 is better. Further, since the package structure 100 of the battery region 11 and the package structure 100 of the non-battery region 12 are different in color, the front light transmittance or the back light reflectance of the package structure 100 of the battery region 11 can be ensured, thereby improving the power of the battery assembly 1000.

It can be appreciated that when the package structure 100 is located on the front surface of the battery sheet, the package structure 100 of the battery area 11 and the package structure 100 of the non-battery area 12 have different colors, so that the package structure 100 of the battery area 11 has higher light transmittance than the package structure 100 of the non-battery area 12, thereby increasing the light incident on the battery sheet, improving the photoelectric conversion efficiency, and thus improving the power of the battery assembly 1000. When the package structure 100 is located on the back surface of the battery sheet, the package structure 100 of the battery area 11 and the package structure 100 of the non-battery area 12 have different colors, so that the package structure 100 of the non-battery area 12 has higher light reflectivity than the package structure 100 of the battery area 11, thereby increasing the light incident to the battery sheet again after reflection, improving the photoelectric conversion efficiency, and further improving the power of the battery assembly 1000.

Specifically, the package structure 100 refers to a structure in which the battery cells are packaged as the battery assembly 1000. The package substrate 10 of the package structure 100 is, for example, a transparent front plate, a back plate, a packaging adhesive layer, etc. of the battery assembly 1000. In addition to the package substrate 10, the package structure 100 may further include a film layer, such as a color modifying layer 20, which is described later, disposed on the package substrate 10. Of course, the package structure 100 may also include only the package substrate 10, and not include a film layer disposed on the package substrate 10.

Specifically, the battery assembly 1000 includes a battery cell, and the battery area 11 is an area covered by an orthographic projection of the battery cell on the package structure 100. The non-battery region 12 is a region other than the region covered by the orthographic projection of the battery sheet on the package structure 100.

Specifically, "the package structure 100 of the battery region 11 is different in color from the package structure 100 of the non-battery region 12" means that the package structure 100 of the battery region 11 is different in color from the package structure 100 of the non-battery region 12 itself without covering other objects.

Specifically, the "stacked color of the package structure 100 of the battery region 11 and the battery sheet" refers to a color formed by overlapping the color of the package structure 100 of the battery region 11 with the color of the battery sheet itself when the package structure 100 of the battery region 11 covers the battery sheet. The stacked color is not the addition of the color of the package structure 100 itself to the color of the battery cells themselves in terms of color value, but rather is superimposed.

Specifically, whether the colors are the same or not may be determined by a color difference algorithm. Such as Δe (CIE 1976 color difference formula), Δe (DE x cmc1984 color difference formula), Δe (CIE 94 color difference formula), Δe (CIEDE 2000 color difference formula). The specific color difference algorithm is not limited here.

Specifically, whether the colors are the same or not may also be determined by the difference interval of the color values. For example, if the absolute difference of the color values is less than 300000, the colors are considered to be the same. Therefore, the floating space with a certain absolute value of the difference value of the color values can be provided, the consistency of the film colors is ensured, the process difficulty is reduced, and the production efficiency is improved.

Example two

In some alternative embodiments, the package structure 100 includes a package base 10, the package base 10 of the battery region 11, and the package base 10 of the non-battery region 12, which are different in color, and in the case where the package base 10 of the battery region 11 covers the battery sheet, the package base 10 of the battery region 11 is the same as the color of the package base 10 of the non-battery region 12 in the lamination color of the battery sheet.

In this way, the color of the package base 10 itself is different in the different regions, and when the package base 10 of the battery region 11 stacks the battery cells, the colors of the package bases 10 in the two regions are the same, so that the uniformity of the film color can be improved by using the package base 10 itself, and it is unnecessary to provide a film layer on the package base 10 to improve the uniformity of the film color. This can reduce the number of fabrication steps of the package structure 100, which is advantageous in reducing the cost and improving the production efficiency.

Specifically, the package base 10 of the battery region 11 and the package base 10 of the non-battery region 12 may be made of glass, plastic, or the like.

Specifically, the color modifier may be incorporated into the package base 10 of the non-battery region 12, so that the color of the package base 10 of the battery region 11 is different from that of the package base 10 of the non-battery region 12.

Example III

In some alternative embodiments, the package structure 100 includes a package substrate 10 and a color-changing layer 30, where the package substrate 10 of the battery region 11 and the package substrate 10 of the non-battery region 12 are the same color, and the color-changing layer 30 is disposed on the package substrate 10 of the non-battery region 12, and where the package substrate 10 of the battery region 11 covers the battery sheet, the color-changing layer 30 sets the color of the non-battery region 12 to be the same as the lamination color of the package substrate 10 of the battery region 11 and the battery sheet.

In this way, the colors of the package substrates 10 are the same in both regions, but the color of the package substrates 10 in the non-battery region 12 is changed by the color changing layer 30, so that when the package substrates 10 in the battery region 11 are laminated with the battery sheet, the colors of the package substrates 10 in both regions are the same, and therefore the color changing layer 30 can be used to improve the uniformity of the film color, and it is not necessary to manufacture the package substrates 10 in which the colors of the two regions are different. This reduces the process difficulty of the package structure 100, which is beneficial to reducing the cost and improving the production efficiency.

Specifically, one battery assembly 1000 may include one or more structures that encapsulate battery cells into the battery assembly 1000. In other words, the number of package substrates 10 of the package structure 100 may be one or more. The color modifying layer 20 may be provided in the non-battery region 12 of one package substrate 10, or the color modifying layer 20 may be provided in a plurality of or even all of the non-battery regions 12 of the package substrate 10.

Specifically, the color-changing layer 20 may cover the entire area of the non-battery area 12, or may cover a partial area of the non-battery area 12. Specifically, the color-changing layer 20 may cover part or all of the battery region 11, or the color-changing layer 20 may not cover the battery region 11.

Example IV

In some alternative embodiments, the package substrate 10 includes at least one of a transparent front plate, a back plate, and a layer of an encapsulant of the battery assembly 1000. In other words, the package substrate 10 includes one or more of a transparent front plate, a back plate, and a package glue layer of the battery assembly 1000.

In this way, various forms of package substrate 10 are provided that can accommodate more production scenarios.

For example, the package substrate 10 includes a transparent front plate, a back plate, and a package glue layer of the battery assembly 1000; as another example, the package substrate 10 includes a transparent front plate of the battery assembly 1000; for another example, the package substrate 10 includes a transparent front plate and a back plate of the battery assembly 1000.

Specifically, the transparent front plate covers the packaging adhesive layer on the front surface of the battery piece. The transparent front plate may be a super white glass having high light transmittance, high transparency, and excellent physical, mechanical, and optical properties, for example, light transmittance of 92% or more. Therefore, the transparent front plate can protect the battery piece under the conditions that the efficiency of the battery piece is not affected as much as possible and the power of the assembly is ensured. Meanwhile, the front packaging adhesive layer of the battery piece can bond the front plate and the battery piece together, and the battery piece is sealed, insulated, waterproof and moistureproof.

It can be appreciated that, since the transparent front plate is disposed on the front surface of the battery assembly 1000, and the front surface of the battery assembly 1000 is generally exposed and not blocked, the color-changing layer 20 is disposed on the non-battery area 12 of the transparent front plate, so that the uniformity of the film color on the front surface of the battery assembly 1000 is better, and the visual effect is better.

Specifically, an antireflection film may be provided on the transparent front plate. Therefore, the transmittance of light can be increased, and the power of the component can be further improved.

Specifically, the back plate covers the packaging adhesive layer on the back of the battery piece. The backboard can protect and support the battery piece, and has reliable insulativity, water resistance and aging resistance. The back plate includes, but is not limited to, tempered glass, organic glass, aluminum alloy TPT composite adhesive film, and the like. Meanwhile, the back plate and the battery piece can be bonded together by the packaging adhesive layer on the back surface of the battery piece, and the battery piece is sealed, insulated, waterproof and dampproof.

It will be appreciated that although the back plate is disposed on the back surface of the battery assembly 1000 and faces the mounting surface, the battery assembly 1000 and the mounting surface generally have a certain angle, and the back surface of the battery assembly 1000 may be exposed outside, so that the color modifying layer 20 is disposed on the non-battery area 12 of the back plate, which can make the consistency of the film color on the back surface of the battery assembly 1000 better and the visual effect better.

Specifically, a reflective film may be provided on the back plate. Therefore, the reflectivity of the light at the back plate can be improved, so that the reflected light is incident to the battery piece again, and the power of the assembly is improved.

Specifically, the encapsulation adhesive layer may be disposed between the battery plate, the transparent front plate and the back plate. The encapsulation adhesive layer can have good light transmission performance and ageing resistance. The encapsulation glue layer includes, but is not limited to, an EVA glue layer, a POE glue layer, etc.

It will be appreciated that, since the encapsulation glue layer is disposed between the battery sheet, the transparent front plate and the back plate, the color-changing layer 20 is disposed in the non-battery area 12 of the encapsulation glue layer, so that the consistency of the film colors of the front, back and side surfaces of the battery assembly 1000 is better, and the visual effect is better.

Example five

Referring to fig. 2, in some alternative embodiments, the boundary of the color modifying layer 20 overlaps the boundary of the cell region 11.

In this way, the color-changing layer 20 is just located at the periphery of the battery area 11, so that the area of the color-changing layer 20 can be reduced as much as possible, the cost is reduced, the color-changing layer 20 of the non-battery area 12 is just connected with the battery area 11, no disconnection is caused, and the film color consistency effect is good.

Specifically, "the boundary of the color changing layer 20 overlaps with the boundary of the battery region 11" means that the color changing layer 20 is close to the boundary of the battery region 11, overlaps with the boundary of the battery region 11 in the thickness direction of the package base 10 of the package structure 100. In other words, the color-changing layer 20 overlaps the boundary of the battery region 11 at the boundary of the package base 10 close to the battery region 11 in the orthographic projection.

It is understood that the color-changing layer 20 is far from the boundary of the battery region 11, may overlap with the boundary of the package substrate 10 of the package structure 100, and may be located within the boundary of the package substrate 10.

In particular, the boundaries of the color modifying layer 20 may include straight edges and/or curved edges. The opposite sides of the color modifying layer 20 may or may not be parallel. The specific form of the boundary of the color modifying layer 20 is not limited herein.

Example six

Referring to fig. 3, in some alternative embodiments, the boundaries of the color modifying layer 20 are located at least partially within the boundaries of the cell region 11. In other words, the boundary portion of the color changing layer 20 is located within the boundary of the cell region 11, or the boundary of the color changing layer 20 is entirely located within the boundary of the cell region 11.

In this way, the color-changing layer 20 of the non-battery area 12 covers and crosses the boundary of the battery area 11, so that the consistency of the film color at the interface of the non-battery area 12 and the battery area 11 is better.

Specifically, "the boundary of the color changing layer 20 is located at least partially within the boundary of the battery region 11" means that the color changing layer 20 is located near the boundary of the battery region 11, at least partially within the boundary of the battery region 11, in the thickness direction of the package base 10 of the package structure 100. In other words, the color-changing layer 20 is located at least partially within the boundary of the battery region 11 at the boundary of the package base 10 close to the battery region 11 in orthographic projection.

It is understood that the color-changing layer 20 is far from the boundary of the battery region 11, may overlap with the boundary of the package substrate 10 of the package structure 100, and may be located within the boundary of the package substrate 10.

In particular, the boundaries of the color modifying layer 20 may include straight edges and/or curved edges. The opposite sides of the color modifying layer 20 may or may not be parallel. The specific form of the boundary of the color modifying layer 20 is not limited herein.

Specifically, the length of the color-changing layer 20 extending into the boundary of the battery region 11 at the boundary of the orthographic projection of the package base 10 is the same everywhere. Thus, the color-changing layer 20 has a regular shape, which is beneficial to improving the production efficiency. Further, the uniformity of the film color of each cell region 11 is converged, and the visual effect is improved.

It will be appreciated that in other embodiments, the length of the color modifying layer 20 extending into the boundaries of the battery region 11 at the boundaries of the orthographic projection of the package substrate 10 may be different from place to place, or may be partially identical in location and different in the remaining locations. The description is not limited thereto.

Example seven

Referring to fig. 4, in some alternative embodiments, the boundary of the color modifying layer 20 is located outside the boundary of the cell region 11.

Thus, the area of the color changing layer 20 can be reduced, and the cost can be reduced when the uniformity of the film color is satisfactory.

Specifically, "the boundary of the color changing layer 20 is located outside the boundary of the battery region 11" means that the boundary of the color changing layer 20 is located outside the boundary of the battery region 11 in the thickness direction of the package base 10 of the package structure 100. In other words, the color-changing layer 20 is located outside the boundary of the battery region 11 at the boundary of the orthographic projection of the package base 10. In other words, the color-changing layer 20 is located entirely within the boundaries of the non-battery region 12 at the boundaries of the orthographic projection of the package base 10.

In particular, the boundaries of the color modifying layer 20 may include straight edges and/or curved edges. The opposite sides of the color modifying layer 20 may or may not be parallel. The specific form of the boundary of the color modifying layer 20 is not limited herein.

Specifically, the length of the color-changing layer 20 from the boundary of the battery region 11 at the boundary of the orthographic projection of the package base 10 is the same everywhere. Thus, the color-changing layer 20 has a regular shape, which is beneficial to improving the production efficiency. The film color consistency at the junction of each battery area 11 and the non-battery area 12 is converged, and the visual effect is better.

It will be appreciated that in other embodiments, the length of the boundary of the color modifying layer 20 from the boundary of the battery region 11 at the front projection of the package substrate 10 may be different from place to place, or may be partially the same, with the rest of the positions being different. The description is not limited thereto.

Example eight

In some alternative embodiments, color modifying layer 20 includes at least one of a color modifying glaze layer, a color modifying ink layer, and a color modifying patch layer. In other words, the color-changing layer 20 includes one, two, or three of a color-changing glaze layer, a color-changing ink layer, and a color-changing patch layer.

In this way, various forms of color modifying layer 20 are provided that can accommodate more production scenarios.

For example, the color-changing layer 20 includes a color-changing glaze layer, a color-changing ink layer, and a color-changing patch layer; as another example, the color modifying layer 20 includes a color modifying glaze layer; for another example, the color changing layer 20 includes a color changing ink layer and a color changing sheet layer.

In particular, the color modifying glaze layer may be a vitreous layer. The color-changing glaze can be fixed on the package substrate 10 by coating and calcining to form a color-changing glaze layer. The color-changing glaze layer not only can set the color of the non-battery area 12 to be the same as that of the battery area 11, but also can increase the mechanical strength and the thermal stability of the package substrate 10 at the covering part, thereby being beneficial to improving the reliability of the package structure 100.

Specifically, the color-changing ink is a viscous colloidal fluid, and can be fixed on the package substrate 10 by printing or painting to form a color-changing ink layer. The color-changing ink layer can not only set the color of the non-battery region 12 to be the same as the color of the battery region 11, but also can improve the manufacturing efficiency of the package structure 100.

In particular, the color modifying sheet may comprise a sheet-like object of plastic sheet, glass sheet or other material. The color-changing sheet may be fixed on the package substrate 10 by bonding to form a color-changing sheet layer. The color-changing sheet layer not only can set the color of the non-battery area 12 to be the same as the color of the battery area 11, but also can be replaced conveniently, so that the maintenance and the recycling of the packaging structure 100 are facilitated.

In one example, the color value of the package substrate 10 itself of the non-battery region 12 is 24, 18, 2, respectively, approaching dark brown; after the color change layer 30 is provided, the color value of the laminated color of the package base 10 of the non-battery region 12 and the color change layer 30 is: RGB is 2, 3, 43, near black respectively; the color value of the laminated color of the package substrate and the battery sheet of the battery region 11 is: RGB is 1, 2, 45, respectively, near black. In this way, the lamination color of the package base 10 and the color change layer 30 in the non-battery region 12 is the same as the lamination color of the package base and the battery sheet in the battery region 11, and the uniformity of the film color is considered to be good.

Example nine

In some alternative embodiments, the color modifying layer 20 is located on the inside and/or outside of the package substrate 10. In other words, the color changing layer 20 is located inside the package base 10; or, the color-changing layer 20 is located outside the package substrate 10; or, the color changing layer 20 is located at the inner and outer sides of the package substrate 10.

In this way, a variety of positions are provided where the color modifying layer 20 is disposed, enabling adaptation to more production scenarios.

Specifically, the color-changing layer 20 is located on the inner side of the package substrate 10, that is, the color-changing layer 20 is located on the side of the package substrate 10 facing the battery cell. In this way, the color-changing layer 20 can be protected by the package substrate 10, which is beneficial to improving the reliability and lifetime of the package structure 100.

Specifically, the color-changing layer 20 is located on the outer side of the package substrate 10, which means that the color-changing layer 20 is located on the side of the package substrate 10 facing away from the battery cells. In this way, the color-changing layer 20 is more conveniently arranged, which is beneficial to improving the production efficiency of the battery assembly 1000.

Specifically, the color-changing layer 20 is located on the inner side and the outer side of the package substrate 10, which means that the inner side and the outer side of the package substrate 10 are both provided with the color-changing layer 20. Thus, even if the color changing layer 20 on one side is dropped, the color changing layer 20 on the other side works, which is beneficial to improving the reliability of the color changing of the package structure 100.

Examples ten

Referring to fig. 2, in some alternative embodiments, the non-battery area 12 includes a frame area 121 and a non-frame area 122, the frame area 121 is covered by the frame 200 of the battery assembly 1000, and the color-changing layer 20 is disposed on the non-frame area 122.

Thus, the area of the color changing layer 20 can be reduced while the consistency of the film color is ensured, which is beneficial to reducing the cost.

Specifically, the bezel 200 may be a metal frame. The battery laminate composed of the transparent front plate, the back plate, the battery sheet and the encapsulation adhesive layer may be disposed on the frame 200, and the frame 200 may serve as a main external support structure of the entire battery assembly 1000, and may stably support and mount the battery assembly 1000, for example, the battery assembly 1000 may be mounted at a desired mounting position through the frame 200.

Specifically, the color-changing layer 20 may cover the entire area of the non-frame area 122, or may cover a part of the area of the non-frame area 122, which is not limited herein.

Example eleven

Referring to fig. 1, a battery assembly 1000 according to an embodiment of the present application includes a battery sheet and a package structure 100 of the battery assembly 1000 according to any one of the first to the tenth embodiments.

In the battery assembly 1000 according to the embodiment of the application, since the packaging structure 100 of the battery area 11 has the same lamination color as the battery piece when the battery piece is covered and the packaging structure 100 of the non-battery area 12 has the same color, the consistency of the film color of the battery assembly 1000 can be improved, and the visual effect of the battery assembly 1000 is better. Further, since the package structure 100 of the battery region 11 and the package structure 100 of the non-battery region 12 are different in color, the front light transmittance or the back light reflectance of the package structure 100 of the battery region 11 can be ensured, thereby improving the power of the battery assembly 1000.

Example twelve

The photovoltaic system of the embodiment of the present application includes the battery assembly 1000 of the eleventh embodiment.

In the photovoltaic system of the embodiment of the present application, in the packaging structure 100 of the battery assembly 1000, the packaging structure 100 of the battery area 11 has the same lamination color as the battery piece when covering the battery piece, and the packaging structure 100 of the non-battery area 12 has the same color, so that the consistency of the film color of the battery assembly 1000 can be improved, and the visual effect of the battery assembly 1000 is better. Further, since the package structure 100 of the battery region 11 and the package structure 100 of the non-battery region 12 are different in color, the front light transmittance or the back light reflectance of the package structure 100 of the battery region 11 can be ensured, thereby improving the power of the battery assembly 1000.

In this embodiment, the photovoltaic system may be applied to a photovoltaic power station, such as a ground power station, a roof power station, a water power station, or the like, and may also be applied to a device or apparatus that uses solar energy to generate power, such as a user solar power source, a solar street lamp, a solar car, a solar building, or the like. Of course, it is understood that the application scenario of the photovoltaic system is not limited thereto, that is, the photovoltaic system may be applied to all fields where solar energy is required to generate electricity. Taking a photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a junction box and an inverter, where the photovoltaic array may be an array combination of a plurality of battery assemblies 1000, for example, a plurality of battery assemblies 1000 may form a plurality of photovoltaic arrays, the photovoltaic array is connected to the junction box, the junction box may junction currents generated by the photovoltaic array, and the junction box may be connected to a utility network after the junction currents flow through the inverter and are converted into alternating currents required by a utility power network, so as to realize solar power supply.

In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the foregoing description of the preferred embodiment of the application is provided for the purpose of illustration only, and is not intended to limit the application to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.

Claims (12)

1. The packaging structure of the battery component is used for covering a battery piece of the battery component, and is characterized in that the packaging structure comprises a battery area and a non-battery area, the packaging structure of the battery area is different from the packaging structure of the non-battery area in color, and when the packaging structure of the battery area covers the battery piece, the lamination color of the packaging structure of the battery area and the battery piece is the same as the color of the packaging structure of the non-battery area.

2. The package structure of a battery assembly according to claim 1, wherein the package structure includes a package base, the package base of the battery region being different in color from the package base of the non-battery region, and a lamination color of the package base of the battery region and the battery sheet being the same as a color of the package base of the non-battery region in a case where the package base of the battery region covers the battery sheet.

3. The package structure of a battery pack according to claim 1, wherein the package structure includes a package base and a color changing layer, the package base of the battery region is the same color as the package base of the non-battery region, the color changing layer is provided to the package base of the non-battery region, and in a case where the package base of the battery region covers a battery sheet, the color changing layer sets the color of the package base of the non-battery region to the same lamination color as the package base of the battery region and the battery sheet.

4. The package structure of a battery assembly according to claim 2 or 3, wherein the package base includes at least one of a transparent front plate, a back plate, and a package paste layer of the battery assembly.

5. The package structure of the battery assembly according to claim 3, wherein a boundary of the color changing layer overlaps a boundary of the battery region.

6. The package structure of claim 3, wherein the boundary of the color modifying layer is at least partially within the boundary of the battery region.

7. The package structure of claim 3, wherein the boundary of the color modifying layer is located outside the boundary of the battery region.

8. The package structure of a battery assembly according to claim 3, wherein the color-changing layer includes at least one of a color-changing glaze layer, a color-changing ink layer, and a color-changing sheet layer.

9. A packaging structure of a battery assembly according to claim 3, wherein the color modifying layer is located on the inner side and/or the outer side of the packaging substrate.

10. The package structure of the battery assembly according to claim 3, wherein the non-battery area includes a frame area and a non-frame area, the frame area is covered by the frame of the battery assembly, and the color-changing layer is disposed in the non-frame area.

11. A battery assembly comprising a battery sheet and the battery assembly packaging structure of any one of claims 1 to 10.

12. A photovoltaic system comprising the cell assembly of claim 11.