High-barrier water vapor HJT battery assembly

Abstract

The utility model discloses a high-barrier water vapor HJT battery assembly, which comprises double weather-proof layers laminated on a battery piece back plate and a water vapor barrier layer in an interlayer of the double weather-proof layers, and the water vapor barrier layer comprises at least two layers, namely a honeycomb barrier layer I and a honeycomb barrier layer II, the first honeycomb blocking layer and the second honeycomb blocking layer are bonded through a second adhesive layer, and honeycomb holes in the first honeycomb blocking layer and the second honeycomb blocking layer are transversely formed. According to the utility model, the plurality of blocking layers are adopted to block water vapor, and the blocking layers adopt honeycomb structures, so that the water vapor can be well adapted to supercold and superhot environments, and even if the water vapor permeates into the blocking layers, the water vapor can be absorbed by the fillers in the blocking layers.

Description

Technical Field

[0001] The utility model relates to the technical field of battery components, in particular to a high-water vapor barrier HJT battery component. Background Art

[0002] Currently, most common photovoltaic backsheets on the market are three-layer composite structures, consisting of a first outer layer (first weather-resistant layer), a middle layer (support layer), and a second outer layer (second weather-resistant layer). These layers are bonded together using adhesive to form a multi-layer composite backsheet. The first outer layer (first weather-resistant layer) is often made of a fluorine-containing film / coating, the middle layer (support layer) is often made of PET plastic, and the second outer layer (second weather-resistant layer) is often made of PE / coating. This type of backsheet offers advantages such as low cost, simple manufacturing, and a wide range of raw materials.

[0003] However, when this structure is used in places with large temperature differences, it is easy to generate water vapor inside. Utility Model Content

[0004] In response to the above-mentioned technical problems that need to be solved, a high-water-barrier HJT battery assembly is provided.

[0005] To achieve the above-mentioned purpose, the present invention is configured in a preferred embodiment as including a double weather-resistant layer stacked on the back panel of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, wherein the water vapor barrier layer includes at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded by adhesive layer 2, and the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are arranged horizontally.

[0006] In a preferred embodiment, the present invention can be further configured to include a double weather-resistant layer stacked on the back panel of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, wherein the water vapor barrier layer includes at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded by adhesive layer 2, the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are arranged horizontally, and the material of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 is polyvinylidene chloride.

[0007] In a preferred embodiment, the present invention can be further configured to include a double weather-resistant layer stacked on the back panel of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, the water vapor barrier layer includes at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded by an adhesive layer 2, the honeycomb pores in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are arranged horizontally, the material of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 is polyvinylidene chloride, and the honeycomb pores of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are filled with sponge.

[0008] In a preferred embodiment, the present invention can be further configured to include a double weather-resistant layer stacked on the back panel of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, the water vapor barrier layer includes at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded by adhesive layer 2, the honeycomb pores in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are arranged horizontally, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are made of polyvinylidene chloride, and the honeycomb pores in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are filled with sponge, and after bonding, the top and bottom of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded to the weather-resistant layer 1 and the weather-resistant layer 2 respectively by adhesive layer 1 and adhesive layer 3.

[0009] In a preferred embodiment, the present invention can be further configured as including a double weather-resistant layer stacked on the back panel of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, the water vapor barrier layer including at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being bonded together by an adhesive layer 2, the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being arranged horizontally, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being made of polyvinylidene chloride, the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being filled with sponge, and after bonding, the top and bottom of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded to the weather-resistant layer 1 and the weather-resistant layer 2 respectively by an adhesive layer 1 and an adhesive layer 3, and the adhesive layer 1, the adhesive layer 2 and the adhesive layer 3 are all polyurethane layers.

[0010] In a preferred embodiment, the utility model can be further configured as including a double weather-resistant layer stacked on the back plate of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, the water vapor barrier layer including at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being bonded together by adhesive layer 2, the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being arranged horizontally, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being made of polyvinylidene chloride, the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being filled with sponge, after the bonding, the top and bottom of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded to the weather-resistant layer 1 and the weather-resistant layer 2 respectively by adhesive layer 1 and adhesive layer 3, the adhesive layer 1, adhesive layer 2 and adhesive layer 3 being all polyurethane layers, the double weather-resistant layer including weather-resistant layer 1 and weather-resistant layer 2, and the surfaces of the weather-resistant layer 1 and the weather-resistant layer 2 being coated with fluorocarbon coating.

[0011] In a preferred embodiment, the present invention can be further configured as including a double weather-resistant layer stacked on the back plate of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, wherein the water vapor barrier layer includes at least two layers of honeycomb barrier layer 1 and honeycomb barrier layer 2, the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being bonded by an adhesive layer 2, the honeycomb holes in the honeycomb barrier layer 1 and the honeycomb barrier layer 2 being arranged horizontally, and the material of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 is polyvinylidene chloride. The honeycomb pores of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are filled with sponge. After bonding, the top and bottom of the honeycomb barrier layer 1 and the honeycomb barrier layer 2 are bonded to the weather-resistant layer 1 and the weather-resistant layer 2 respectively through the adhesive layer 1 and the adhesive layer 3. The adhesive layer 1, the adhesive layer 2 and the adhesive layer 3 are all polyurethane layers. The double weather-resistant layer includes the weather-resistant layer 1 and the weather-resistant layer 2. The surfaces of the weather-resistant layer 1 and the weather-resistant layer 2 are coated with fluorocarbon coating, and a support layer is provided at the bottom of the weather-resistant layer 2.

[0012] Beneficial effect: The utility model provides a high-water vapor barrier HJT battery component, which uses multiple barrier layers for water vapor barrier, and the barrier layer adopts a honeycomb structure, which can adapt well to overcooling and overheating environments, and even if water vapor penetrates into the barrier layer, it will be absorbed by the filler in the barrier layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a partially enlarged schematic diagram of the utility model.

[0016] In the figure, 1 is the weather-resistant layer 1; 2 is the honeycomb barrier layer 1; 3 is the honeycomb barrier layer 2; 4 is the weather-resistant layer 2; 5 is the viscose layer 1; 6 is the viscose layer 2; and 7 is the viscose layer 3. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figure 1 and Figure 2As shown, a high-barrier water vapor HJT battery assembly includes a double weather-resistant layer stacked on the back plate of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, wherein the water vapor barrier layer includes at least two layers of honeycomb barrier layer 1 2 and honeycomb barrier layer 2 3, and the honeycomb barrier layer 1 2 and the honeycomb barrier layer 2 3 are bonded by an adhesive layer 2 6. The honeycomb holes in the honeycomb barrier layer 1 2 and the honeycomb barrier layer 2 3 are arranged horizontally. The honeycomb barrier layer can not only perform good barrier performance, but also has a certain degree of deformation in cold and hot environments.

[0019] The honeycomb barrier layer 1 2 and the honeycomb barrier layer 2 3 are made of polyvinylidene chloride.

[0020] The honeycomb pores of the honeycomb barrier layer 1 2 and the honeycomb barrier layer 2 3 are filled with sponge.

[0021] After the bonding, the top and bottom of the honeycomb barrier layer 1 2 and the honeycomb barrier layer 2 3 are bonded to the weather-resistant layer 1 1 and the weather-resistant layer 2 4 respectively through the adhesive layer 1 5 and the adhesive layer 3 7 .

[0022] The adhesive layer 1 5 , the adhesive layer 2 6 and the adhesive layer 3 7 are all polyurethane layers.

[0023] The double weather-resistant layer includes a weather-resistant layer 1 and a weather-resistant layer 4, and the surfaces of the weather-resistant layer 1 and the weather-resistant layer 2 4 are coated with fluorocarbon coating.

[0024] A supporting layer is provided at the bottom of the weather-resistant layer 2 4 .

[0025] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity from another entity, but do not necessarily require or imply any actual relationship or order between these entities.

[0026] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A high water vapor barrier HJT battery assembly, characterized in that: The invention comprises a double weather-resistant layer stacked on the back plate of the battery cell, and a water vapor barrier layer in the interlayer of the double weather-resistant layer, wherein the water vapor barrier layer comprises at least two layers of honeycomb barrier layer 1 (2) and honeycomb barrier layer 2 (3), the honeycomb barrier layer 1 (2) and the honeycomb barrier layer 2 (3) are bonded by adhesive layer 2 (6), and the honeycomb holes in the honeycomb barrier layer 1 (2) and the honeycomb barrier layer 2 (3) are arranged horizontally.

2. The high water vapor barrier HJT battery assembly according to claim 1, characterized in that: The honeycomb barrier layer 1 (2) and the honeycomb barrier layer 2 (3) are made of polyvinylidene chloride.

3. The high water vapor barrier HJT battery assembly according to claim 2, characterized in that: The honeycomb pores of the honeycomb barrier layer 1 (2) and the honeycomb barrier layer 2 (3) are filled with sponge.

4. The high water vapor barrier HJT battery assembly according to claim 3, characterized in that: The top and bottom of the honeycomb barrier layer 1 (2) and the honeycomb barrier layer 2 (3) are respectively bonded to the weather-resistant layer 1 (1) and the weather-resistant layer 2 (4) via the adhesive layer 1 (5) and the adhesive layer 3 (7).

5. The high water vapor barrier HJT battery assembly according to claim 4, characterized in that: The adhesive layer 1 (5), the adhesive layer 2 (6) and the adhesive layer 3 (7) are all polyurethane layers.

6. The high water vapor barrier HJT battery assembly according to claim 5, characterized in that: The double weather-resistant layer comprises a weather-resistant layer 1 (1) and a weather-resistant layer 2 (4), and the surfaces of the weather-resistant layer 1 (1) and the weather-resistant layer 2 (4) are coated with fluorocarbon coating.

7. The high water vapor barrier HJT battery assembly according to claim 5, characterized in that: A support layer is provided at the bottom of the second weather-resistant layer (4).

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