A battery cell assembly

Abstract

The utility model discloses a battery piece assembly, including annular frame and inlay, the frame adopts transparent resin to make, and the annular groove has on the inside wall of frame, and the inlay is embedded in the annular groove, and the inlay includes: from top to bottom first protective layer, first adhesive film, battery piece group, second adhesive film, second protective layer in proper order, wherein, battery piece group has the first light -absorbing surface of first adhesive film one side, and first protective layer and first adhesive film all adopt transparent material to make. Reflecting light is favorable for reducing temperature, and the service life is promoted.

Description

Technical Field

[0001] This utility model relates to the field of solar cells, and more particularly to a solar cell assembly. Background Technology

[0002] With the continuous development of photovoltaic materials and the government's policies to control their costs, more and more solar cell and module manufacturers are focusing on cost reduction and efficiency improvement as key directions for capturing market share. Currently, replacing traditional aluminum frames with composite material frames is a good way to reduce costs. Composite material frames are lightweight, have low carbon emissions, and excellent corrosion and aging resistance. In areas with high corrosion resistance, such as offshore, they are more advantageous than aluminum frames. Furthermore, composite materials, being insulating, have strong resistance to PID (Polydioxanone). Moreover, there are many gaps around the solar cells and the edges of the solar cell module. Most sunlight in these gaps is transmitted through these gaps and cannot be directly utilized by the cells, affecting the overall light utilization efficiency of the photovoltaic module. However, most current composite material frames are made of polyurethane pultruded profiles, which cannot be transparent. This results in partial obstruction of the gaps around the solar cells and edges, further hindering the utilization of light in these areas.

[0003] Currently, there are related patented technologies for utilizing light at the edge. For example, Chinese patent CN106656004A discloses a transparent photovoltaic cell module. This utility model installs reflective glass on the inside of a transparent frame, converting sunlight entering or reflected from the reflective glass (with a fully transparent and semi-reflective film coated on the convex surface), the first protective layer, and the transparent frame into electrical energy.

[0004] However, because the edges of this technology are coated with a fully transparent and semi-reflective film, the reflectivity is not high, which limits the improvement in power. In addition, the transparent frame is made of glass, which is easily damaged during transportation and installation, causing safety hazards.

[0005] Therefore, it is necessary to develop new types of solar cell modules to address the aforementioned issues. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a battery cell assembly, including an annular frame and an insert. The frame is made of transparent resin, and an annular groove is provided on the inner sidewall of the frame. The insert is embedded in the annular groove. The insert includes: a first protective layer, a first adhesive film, a battery cell assembly, a second adhesive film, and a second protective layer arranged sequentially from top to bottom. The battery cell assembly has a first light-absorbing surface located on one side of the first adhesive film. Both the first protective layer and the first adhesive film are made of transparent material.

[0007] The battery cell assembly has a second light-absorbing surface near the second adhesive film, and both the second protective layer and the second adhesive film are made of transparent materials.

[0008] Both the first and second protective layers are made of glass.

[0009] An annular gap is left between the outer wall of the battery cell assembly and the inner wall of the annular groove. The annular gap contains, from top to bottom, a light guide layer, a third adhesive film, and a reflective layer located between the first adhesive film and the second adhesive film, so that some of the sunlight illuminating the frame is reflected and directed to the first light-absorbing surface.

[0010] The outer wall of the battery cell assembly is outside the groove.

[0011] The carrier is bonded to the second protective layer by a second adhesive film. The carrier has an irregular triangular prism array, and a reflective layer of uniform thickness is coated on the surface of the triangular prism array.

[0012] The outer edge of the frame is coated with a transparent fluorine coating or a fluorocarbon coating.

[0013] The frame has a light transmittance of ≥60%.

[0014] Both the first and second adhesive films are EVA or POE adhesive films.

[0015] Beneficial effects: The battery cell assembly proposed in this utility model, wherein the presence of a transparent frame, a light guide layer, and a reflective layer can reflect sunlight shining on the frame, reduce heat absorption and storage, lower the operating temperature of the battery cell assembly, and improve the stability and service life of the battery cell assembly. In addition, the combination of the light guide layer, the reflective layer, and the battery cell assembly can feed sunlight shining on the frame back to the battery cell assembly, and can also utilize the sunlight around the battery cell assembly, thereby improving the utilization rate of sunlight. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the battery cell assembly in an embodiment of this utility model. Detailed Implementation

[0017] The following is for reference. Figure 1 This describes a cryogenic pump according to an embodiment of the present invention.

[0018] like Figure 1As shown, a battery cell assembly according to an embodiment of the present invention includes an annular frame 1 and an insert 2. The frame 1 is made of transparent resin, and an annular groove 11 is provided on the inner sidewall of the frame 1. The insert 2 is embedded in the annular groove 11. The insert 2 includes: a first protective layer 21, a first adhesive film 22, a battery cell group 23, a second adhesive film 24, and a second protective layer 25 arranged sequentially from top to bottom. The battery cell group 23 has a first light-absorbing surface 231 located on one side of the first adhesive film 22. Both the first protective layer 21 and the first adhesive film 22 are made of transparent material.

[0019] The frame 1 reflects sunlight, reducing heat absorption and storage, lowering the operating temperature of the battery cell assembly, improving its stability and lifespan. The transparent resin frame 1 also provides high structural strength and good protection for the battery cell assembly 23. The frame 1 is a glass fiber reinforced composite material produced using a pultrusion process. The main resin of the frame 1 is a transparent, styrene-free aliphatic epoxy vinyl ester resin with a refractive index of 1.46-1.52. The frame 1 also includes a small amount of silane coupling agent, internal release agent, antioxidant, light stabilizer, curing agent, and accelerator. The outer layer of the frame 1 is coated with a transparent fluorine or fluorocarbon coating with good weather resistance. The reinforcing material used in the frame 1 is continuous glass fiber with a refractive index of 1.46-1.50.

[0020] The battery cell assembly 23 has a second light-absorbing surface 232 near the second adhesive film 24. Both the second protective layer 25 and the second adhesive film 24 are made of transparent materials, and both sides can absorb light, which can improve the light absorption efficiency.

[0021] Both the first protective layer 21 and the second protective layer 25 are made of glass.

[0022] An annular gap is left between the outer wall of the battery cell assembly 23 and the inner wall of the annular groove 11. The annular gap contains, from top to bottom, a light guide layer 26, a third adhesive film 28, and a reflective layer 27 located between the first adhesive film 22 and the second adhesive film 24, so that some of the sunlight illuminating the frame 1 is reflected and directed toward the first light-absorbing surface 231.

[0023] The combination of the light guide layer 26, the reflective layer 27, and the battery cell assembly 23 can reflect sunlight shining on the frame 1 back to the battery cell assembly 23. For the specific optical path, please refer to [reference needed]. Figure 1 The broken line with arrows in the middle can also utilize the sunlight around the solar cell array 23, thus improving the utilization rate of sunlight.

[0024] The outer wall of the cell assembly 23 is outside the groove.

[0025] The inlay 2 further includes: a carrier 29, which is bonded to the second protective layer 25 via a second adhesive film 24. The carrier 29 has an irregular triangular prism array, and a uniformly thick reflective layer 27 is coated on the surface of the triangular prism array. The outer surface of the frame 1 is coated with a transparent fluorine coating or a fluorocarbon coating. The light transmittance of the frame 1 is ≥60%. Both the first adhesive film 22 and the second adhesive film 24 are EVA or POE adhesive films.

Claims

1. A battery cell assembly, characterized in that, The device includes an annular frame (1) and an insert (2). The frame (1) is made of transparent resin and has an annular groove (11) on its inner sidewall. The insert (2) is embedded in the annular groove (11). The insert (2) includes: a first protective layer (21), a first adhesive film (22), a battery cell assembly (23), a second adhesive film (24), and a second protective layer (25) arranged sequentially from top to bottom. The battery cell assembly (23) has a first light-absorbing surface (231) located on one side of the first adhesive film (22). Both the first protective layer (21) and the first adhesive film (22) are made of transparent material. An annular gap is left between the outer wall of the battery cell assembly (23) and the inner wall of the annular groove (11). The annular gap contains a light guide layer (26), a third adhesive film (28), and a reflective layer (27) located between the first adhesive film (22) and the second adhesive film (24) from top to bottom, so that some of the sunlight illuminating the frame (1) is reflected and directed to the first light-absorbing surface (231). The carrier (29) is bonded to the second protective layer (25) by the second adhesive film (24). The carrier (29) has an irregular triangular prism array, and a reflective layer (27) of uniform thickness is applied to the surface of the triangular prism array. (1) Light transmittance of the frame is ≥60%.

2. The battery cell assembly as described in claim 1, characterized in that, The battery cell assembly (23) has a second light-absorbing surface (232) near the second adhesive film (24), and both the second protective layer (25) and the second adhesive film (24) are made of transparent materials.

3. The battery cell assembly as described in claim 2, characterized in that, Both the first protective layer (21) and the second protective layer (25) are made of glass.

4. The battery cell assembly according to claim 1, characterized in that, The outer wall of the battery cell assembly (23) is outside the groove.

5. The battery cell assembly according to claim 1, characterized in that, The outer side of the frame (1) is coated with a transparent fluorine coating or a fluorocarbon coating.

6. The battery cell assembly according to claim 1, characterized in that, Both the first adhesive film (22) and the second adhesive film (24) are EVA or POE adhesive films.

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