Heat conduction assembly for solar cell

Abstract

The utility model relates to the technical field of solar cells, in particular to a heat conduction assembly for a solar cell. A conventional foaming backboard assembly is poor in thermal conductivity and poor in heat dissipation performance. In order to solve the problems, the utility model provides the heat conduction assembly for the solar cell, the heat conduction substrate layer in the heat conduction assembly for the solar cell is vertically contacted and fixedly connected with the heat conduction glue layers on the upper surface and the lower surface of the heat conduction core layer to form a heat conduction channel in the vertical direction, and the heat conduction channel is not blocked by the foaming layer; the heat conduction effect of the obtained solar cell backboard assembly is better.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, and particularly relates to a heat conduction component for a solar cell. Background Art

[0002] With the development of solar cell technology, lightweight solar modules are increasingly used. The reinforcing structures used in lightweight solar modules are mostly composed of a foamed core layer or honeycomb plates connected together. The conventional foamed backplane (as shown in the attached drawings of the specification) used in lightweight solar modules is composed of a substrate layer and a foamed core layer fixed and connected in parallel alternately. The connection method between the solar backplane and the solar cell panel is to install the solar cell panel on the surface of the substrate of the foamed backplane. The substrate layer, the foamed layer and the solar cell panel are parallel to each other and do not contact each other. In actual use, the heat conductivity of the backplane assembly of the solar cell panel is poor, the heat dissipation performance is not good, heat accumulation is relatively serious during long-term use, and it is easy to cause rapid attenuation or even damage of the device efficiency. Figure 1 As shown in the attached drawings of the specification Summary of the Utility Model

[0003] The problems existing in the prior art are: the heat conductivity of the conventional foamed backplane assembly is poor, and the heat dissipation performance is not good. In view of the above problems, the utility model provides a heat conduction component for a solar cell (as shown in the attached drawings of the specification), which comprises a heat conduction core layer and a heat dissipation element. Figure 3 As shown in the attached drawings of the specification

[0004] The heat conduction core layer comprises a heat conduction foamed layer and a heat conduction adhesive layer.

[0005] The heat conduction adhesive layer is fixedly connected to the upper surface and the lower surface of the heat conduction foamed layer (as shown in the attached drawings of the specification), and the heat conduction adhesive layer and the heat conduction foamed layer coincide in the orthographic projection on the ground. Figure 2 As shown in the attached drawings of the specification

[0006] The heat dissipation element is fixedly installed on the lower surface of the heat conduction core layer.

[0007] The heat conduction foamed layer is composed of a plurality of foamed board layers and a plurality of adhesive layers fixed and connected in parallel alternately.

[0008] Each foamed board layer is composed of a plurality of substrate layers and a plurality of foamed layers fixed and connected in parallel alternately, and the foamed layer is in vertical contact with the heat conduction adhesive layer.

[0009] The substrate layer contains heat conduction fillers.

[0010] Preferably, the base resin used for the substrate layer is at least one or a combination of two or more of PET, PP, PS, PMMA, PC, and PI.

[0011] Preferably, the foamed layer contains heat conduction fillers.

[0012] Preferably, the heat-conducting filler includes carbon nanomaterials, ceramic particles or nanocellulose.

[0013] Preferably, the carbon nanomaterials include carbon nanotubes or graphene.

[0014] Preferably, the ceramic particles include boron nitride or alumina.

[0015] Preferably, the heat dissipation element is a metal profile.

[0016] Preferably, the metal profile is copper or aluminum.

[0017] The utility model has the following beneficial effects:

[0018] (1) Both the substrate layer and the foaming layer of the heat-conducting component for solar cells obtained by the utility model contain heat-conducting fillers, which can significantly improve the heat-conducting performance of the obtained solar cell backplane.

[0019] (2) The heat-conducting adhesive layers on the upper and lower surfaces of the heat-conducting substrate layer and the heat-conducting core layer in the heat-conducting component for solar cells obtained by the utility model are vertically in contact and fixedly connected to form a heat-conducting path in the vertical direction. The heat-conducting path is not blocked by the foaming layer, and the heat-conducting effect of the obtained solar cell backplane component is better. Description of the Drawings

[0020] Figure 1 : is a schematic structural diagram of a conventional foamed backplane installed on the surface of a solar cell panel.

[0021] Figure 2 : is a schematic structural diagram of the heat-conducting foaming layer in the heat-conducting component for solar cells obtained by the utility model.

[0022] Figure 3 : is a schematic structural diagram of the heat-conducting component for solar cells obtained by the utility model.

[0023] Figure 4 : is a schematic process flow diagram for manufacturing the heat-conducting component for solar cells obtained by the utility model.

[0024] In the figure: 1. Heat-conducting core layer, 2. Solar cell panel, 3. Heat-conducting adhesive, 4. Heat dissipation element, 1-1, Substrate layer, 1-2. Adhesive layer, 1-3. Foaming layer. Detailed Embodiments

[0025] The following is a detailed description of the utility model in conjunction with embodiments. However, it should be understood that the following embodiments are only illustrative examples of the implementation modes of the utility model, rather than limitations on the scope of the utility model.

[0026] As shown in the specification appendix Figure 2As shown, a heat-conducting foam layer 1-3 of the present utility model is composed of a foam board layer and an adhesive layer 1-2 fixedly connected in parallel and alternately. The thickness of the adhesive layer 1-2 is 0.02-0.5 mm.

[0027] The foam board layer is composed of a substrate layer 1-1 and a foam layer 1-3 fixedly connected in parallel and alternately. The foam layer 1-3 is in vertical contact with the heat-conducting adhesive layer 3. The foam layer 1-3 contains heat-conducting fillers. The thickness of the substrate layer 1-1 is 0.01 mm - 2 mm, the thickness of the foam layer 1-3 is 1-50 mm, and the thickness of the heat-conducting adhesive layer 3 is 0.2-2 mm.

[0028] As shown in the attached Figure 3 As shown, a heat-conducting component for a solar cell of the present utility model includes a heat-conducting core layer 1 and a heat-dissipating element 4.

[0029] The heat-conducting core layer 1 includes a heat-conducting foam layer 1-3 and a heat-conducting adhesive layer 3.

[0030] The heat-conducting adhesive layer 3 is parallelly covered on the upper and lower surfaces of the heat-conducting foam layer 1-3 and is fixedly connected to the heat-conducting foam layer 1-3. The orthographic projection of the heat-conducting adhesive layer 3 and the heat-conducting foam layer 1-3 on the ground coincides.

[0031] The heat-dissipating element 4 is fixedly installed on the lower surface of the heat-conducting core layer 1.

[0032] The heat-conducting foam layer 1-3 is composed of a foam board layer and an adhesive layer 1-2 fixedly connected in parallel and alternately.

[0033] The foam board layer is composed of a substrate layer 1-1 and a foam layer 1-3 fixedly connected in parallel and alternately. The foam layer 1-3 is in vertical contact with the heat-conducting adhesive layer 3. The outermost layer of the foam board layer is the substrate layer 1-1. The substrate layer 1-1 and the foam layer 1-3 contain heat-conducting fillers.

[0034] In a specific embodiment, the heat-conducting fillers include carbon nanomaterials, ceramic particles or nanocellulose.

[0035] In a specific embodiment, the carbon nanomaterials include carbon nanotubes or graphene.

[0036] In a specific embodiment, the ceramic particles include boron nitride or alumina.

[0037] In a specific embodiment, the heat-dissipating element 4 is a metal profile.

[0038] In a specific embodiment, the metal profile is copper or aluminum.

[0039] As shown in the attached Figure 4As shown in the figure, it is a process flow chart for preparing a heat conduction component for a solar cell of the present utility model. The specific preparation process includes the following steps:

[0040] (1) First, perform coextrusion lamination to form a composite structure 1 in which a substrate layer 1-1 and a material layer to be foamed are alternately and fixedly connected in parallel.

[0041] (2) Adopt supercritical foaming technology to foam the material layer to be foamed in the composite structure 1 to obtain a composite structure 2.

[0042] (3) The composite structures 2 are alternately stacked and compounded together through an adhesive layer 1-2 to obtain a composite structure 3.

[0043] (4) Cut along the A-A section of the composite structure 3 to obtain a composite structure 4.

[0044] (5) Heat-conducting glue layers 3 are provided on both the upper and lower surfaces of the composite structure 4 to obtain a composite structure 5.

[0045] (6) A heat dissipation element 4 is provided on the lower surface of the composite structure 5 to obtain a composite structure 6, which is the heat conduction component for a solar cell. The solar cell panel is installed on the upper surface of the composite structure 6.

[0046] Taking the ideal embodiment of the present utility model as the inspiration, through the above description, relevant workers can completely make various changes and modifications within the scope not deviating from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A thermally conductive component for a solar cell, characterized in that: It comprises a heat-conducting core layer (1) and a heat-dissipating element (4), The heat-conducting core layer (1) comprises a heat-conducting foaming layer (1-3) and a heat-conducting adhesive layer (3). The heat-conducting adhesive layer (3) covers the upper surface and the lower surface of the heat-conducting foam layer (1-3) in parallel and is fixedly connected to the heat-conducting foam layer (1-3); the orthographic projections of the heat-conducting adhesive layer (3) and the heat-conducting foam layer (1-3) on the ground overlap. The heat dissipation element (4) is fixedly mounted on the lower surface of the heat-conducting core layer (1). The heat-conducting foam layer (1-3) is composed of a plurality of foamed board layers and a plurality of adhesive layers (1-2) that are alternately fixedly connected in parallel. The foamed board layer is composed of a plurality of substrate layers (1-1) and a plurality of foamed layers (1-3) which are alternately and fixedly connected in parallel, and the foamed layers (1-3) are in vertical contact with the heat-conducting adhesive layer (3). The substrate layer (1-1) contains a thermally conductive filler.

2. A thermally conductive component for a solar cell according to claim 1, characterized in that: The base resin used for the substrate layer (1-1) is at least one of PET, PP, PS, PMMA, PC, and PI, or a combination of two or more thereof.

3. A thermally conductive component for a solar cell according to claim 1, characterized in that: The foamed layer (1-3) contains a thermally conductive filler.

4. A thermally conductive component for a solar cell according to claim 1, characterized in that: The thermally conductive filler includes carbon nanomaterials, ceramic particles or nanocellulose.

5. A thermally conductive component for a solar cell according to claim 4, characterized in that: The carbon nanomaterial includes carbon nanotubes or graphene.

6. A thermally conductive component for a solar cell according to claim 4, characterized in that: The ceramic particles include boron nitride or aluminum oxide.

7. The thermally conductive component for a solar cell according to claim 1, characterized in that: The heat dissipation element (4) is a metal profile.

8. A thermally conductive component for a solar cell according to claim 7, characterized in that: The metal is copper or aluminum.

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