Photovoltaic module frame and photovoltaic device

Abstract

The utility model discloses a photovoltaic module frame and a photovoltaic device, and the photovoltaic module frame comprises a cooling pipeline which is internally provided with a liquid cooling channel; the at least one evaporation pipeline is internally provided with at least one heat pipe for accommodating a heat exchange working medium, the two ends of the heat pipe are closed ends and respectively penetrate through the side wall of the cooling pipeline to extend into the liquid cooling channel so as to form two condensation ends, and the surface, close to the battery unit, of the evaporation pipeline is provided with a groove; and the heat-conducting insulating layer is arranged in the groove and is used for bearing and cooling the battery unit. According to the invention, high-efficiency heat transfer can be realized, so that the battery unit is rapidly cooled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of microfabrication technology, in particular to a photovoltaic module frame and a photovoltaic device. BACKGROUND

[0002] As a low-carbon and environmentally friendly power generation technology, photovoltaic technology has attracted widespread attention. Concentrated photovoltaics (CPV) technology uses relatively inexpensive optical elements to focus sunlight onto a smaller photovoltaic cell. In a CPV system, the conversion rate of a three-junction solar cell is about 36%, but the energy that is not converted into electrical energy is stored in the cell as heat. If this heat is not dissipated in time, it will cause the performance of the cell to degrade. Moreover, as the concentration ratio increases, the cell will be subjected to more heat, resulting in a significant decrease in the conversion efficiency of the CPV cell, and even irreversible failure. Therefore, designing a novel heat dissipation structure to eliminate excess heat is crucial to maintaining the performance of the cell. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problems, the present application provides a photovoltaic module frame and a photovoltaic device, which can improve the problem of existing CPV cells having low heat dissipation efficiency, resulting in a decrease in conversion efficiency or even irreversible failure.

[0004] To solve the above technical problems, in a first aspect, the present application provides a photovoltaic module frame, comprising:

[0005] A cooling pipe, wherein the cooling pipe is provided with a liquid cooling channel;

[0006] At least one evaporation pipe, wherein the evaporation pipe is provided with at least one heat pipe for containing a heat exchange medium, both ends of the heat pipe are closed ends, and respectively extend through the side wall of the cooling pipe to the liquid cooling channel to form two condensation ends, and the surface of the evaporation pipe close to the cell unit is provided with a groove;

[0007] A thermally conductive insulation layer is arranged in the groove and used for carrying and cooling the cell unit.

[0008] Optionally, the surface of the evaporation pipe close to the cell unit is provided with a groove for containing the thermally conductive insulation layer and the cell unit.

[0009] Optionally, one side of the heat pipe facing the thermally conductive insulation layer is a plane.

[0010] Optionally, the cooling pipe is further provided with a first air channel;

[0011] The evaporation pipe is further provided with a second air channel in communication with the first air channel.

[0012] Optionally, a sealing member is arranged at the connection between the evaporation pipe and the cooling pipe.

[0013] Optionally, the thermally conductive insulation layer is an insulation layer comprising an adhesive and a thermally conductive filler.

[0014] Optionally, the cooling pipe comprises:

[0015] at least two first cooling pipes arranged in parallel to the first direction, and the outermost two first cooling pipes are respectively provided with a liquid inlet and a liquid outlet;

[0016] at least one second cooling pipe arranged in parallel to the second direction, the second cooling pipe is connected with all the first cooling pipes, and is configured to flow liquid from the liquid inlet and flow out from the liquid outlet after flowing through all the first cooling pipes and the second cooling pipe, wherein the second direction is perpendicular to the first direction.

[0017] the at least one evaporation pipe arranged in parallel to the second direction, the evaporation pipe is arranged between two adjacent first cooling pipes, and the condensing end extends into the corresponding liquid cooling channel respectively.

[0018] Optionally, the second cooling pipe and the evaporation pipe are arranged alternately along the first direction.

[0019] In a second aspect, the present application further provides a photovoltaic device, comprising a cell unit and a photovoltaic module frame according to any of the above embodiments.

[0020] The cell unit is arranged on the thermally conductive insulation layer.

[0021] Optionally, the photovoltaic device further comprises:

[0022] an encapsulation layer for encapsulating the cell unit.

[0023] Optionally, the encapsulation layer is a silicone layer or an epoxy resin layer.

[0024] The photovoltaic module frame of the present application can be filled with heat exchange working medium in the heat pipe in advance. When the battery unit works, the heat generated by the battery unit is conducted to the evaporation pipe through the heat-conducting insulation layer. The heat exchange working medium in the heat pipe vaporizes due to heat absorption, and the steam pressure rises. Due to the pressure difference, the heat exchange working medium gas flows to the two condensing ends with lower temperature. The liquid cooling channel of the cooling pipe circulates the cooling medium. When the cooling medium flows through the two condensing ends, the two condensing ends can be cooled. The heat exchange working medium gas releases latent heat when being condensed at the condensing end, and is re-condensed into heat exchange working medium liquid. The heat exchange working medium liquid returns to the evaporation section (the area where the heat exchange working medium vaporizes between the two condensing ends) by the suction force provided by the capillary structure. Such a cycle can achieve efficient heat transfer and quickly cool the battery unit. In the present application, the heat-conducting insulation layer is filled between the battery unit and the evaporation pipe, which can avoid the existence of gaps between the battery unit and the evaporation pipe, and the existence of gaps between multiple heat pipes when there are multiple heat pipes. The contact between the battery unit and the heat pipe can be improved, an effective heat transfer channel can be established, the interface contact thermal resistance can be reduced, and the heat dissipation effect can be maximized. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a structural schematic diagram of a photovoltaic module frame provided by an embodiment of the present application;

[0027] Figure 2 is a structural schematic diagram of a photovoltaic module frame provided by an embodiment of the present application; Figure 1 is a sectional structural schematic diagram along the A-A line in FIG. 1;

[0028] Figure 3 is a sectional structural schematic diagram along the B-B line in FIG. 1; Figure 1 is a sectional structural schematic diagram along the B-B line in FIG. 1;

[0029] Figure 4 is a cooling principle diagram of a photovoltaic module frame provided by an embodiment of the present application;

[0030] Figure 5 is a structural schematic diagram of another photovoltaic module frame provided by an embodiment of the present application;

[0031] Figure 6 is a sectional structural schematic diagram along the C-C line in FIG. 2; Figure 1 is a sectional structural schematic diagram along the C-C line in FIG. 2;

[0032] Figure 7 is a schematic view of a cross-sectional structure along the line D-D in Figure 1

[0033] Figure 8 is a schematic view of a cross-sectional structure along the line E-E in Figure 1

[0034] Figure 9 is a schematic view of a structure of a photovoltaic device provided by an embodiment of the present application.

[0035] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. The above-described drawings have shown the specific embodiments of the present application, and more detailed descriptions will be given hereinafter. These drawings and the written description are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same numbers in different drawings represent the same or similar elements unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0037] As described above, if the CPV cell cannot dissipate heat in time, the conversion efficiency will be significantly reduced, and even irreversible failure will occur. As an improvement scheme, a heat pipe and a heat dissipation fin can be designed behind the cell sheet to dissipate heat, and the heat dissipation fin can be used to expand the heat dissipation area and increase the heat dissipation capacity. However, in high-concentration photovoltaics, the area of a triple-junction cell is only about 1 cm 2 , and the temperature can be as high as 200℃ or higher. It is difficult for the heat to be dissipated in time through the heat dissipation fin, and the improvement has limited effect. As another improvement scheme, a heat sink can be added to the back of the cell sheet, and a heat pipe and a fin can be used for heat dissipation. However, the heat dissipation capacity of the heat sink is limited, and it is also difficult to effectively transfer the heat of the cell to the evaporation section of the heat pipe in time. In addition, the photovoltaic module includes a plurality of cell sheets, and if the above-mentioned heat dissipation device is designed at the back end of each cell sheet, the overall volume and weight of the photovoltaic module will increase, which is not convenient for the subsequent installation of the support, and is not practical. Based on this, the present application provides a photovoltaic module frame and a photovoltaic device.

[0038] Please refer to Figures 1-3 , Figure 1 is a schematic view of a structure of a photovoltaic module frame provided by an embodiment of the present application, Figure 2 is a schematic view of a cross-sectional structure along the line D-D in Figure 1 ​​Schematic diagram of the cross-sectional structure along line AA. Figure 3 It is along Figure 1 A cross-sectional view of the BB line shows that the photovoltaic module frame may include: a cooling pipe 10, at least one evaporation pipe 20, and a thermally conductive insulation layer 30.

[0039] The cooling pipe 10 is equipped with a liquid cooling channel 101, and the evaporation pipe 20 is equipped with at least one heat pipe 201 for capacitive heat exchange. Figure 3 In this example, three heat pipes 201 are used. The two ends of the heat pipe 201 are closed, and they extend through the side wall of the cooling pipe 10 into the liquid cooling channel 101 to form two condensation ends 21. It should be noted that the heat pipe 201 can be integrally formed with the evaporation pipe 20 during molding, or it can be assembled with the evaporation pipe 20 using separate heat pipes 201.

[0040] The surface of the evaporation pipe 20 near the battery unit 50 is provided with a groove 22, and the thermal insulation layer 30 is disposed in the groove 22. The thermal insulation layer 30 is used to support and cool the battery unit 50. By providing the groove 22, the thermal insulation layer 30 and the battery unit 50 can be prevented from protruding from the evaporation pipe 20. At the same time, it is also beneficial for the thermal insulation layer 30 to be shaped in the groove 22, as well as for the positioning and installation of the battery unit 50.

[0041] For example, a battery cell 50 may include a wiring layer 51 and battery cells 52 disposed on and electrically connected to the wiring layer 51. Multiple battery cells 50 may be provided, and they can be arranged in parallel, series, or series-parallel structures via the wiring layer 51. The wiring layer 51 is preferably made of a metal material with good conductivity, such as copper, gold, or silver.

[0042] The working principle of the photovoltaic module frame in this embodiment is as follows: a heat exchange medium is pre-loaded into the heat pipe 201 inside the evaporation pipe 20. When the battery cell 50 is working, the heat generated is conducted to the evaporation pipe 20 through the thermally conductive insulation layer 30. The heat exchange medium inside the heat pipe 201 absorbs heat and vaporizes, causing the vapor pressure to rise. Due to the pressure difference, the heat exchange medium gas flows towards the two condensing ends 21 with lower temperatures. Since the cooling medium circulates through the liquid cooling channel 101 of the cooling pipe 10, it can cool the two condensing ends 21 when it flows through them. The heat exchange medium gas releases latent heat upon condensation at the condensing ends 21 and re-condenses into a heat exchange medium liquid. The heat exchange medium liquid returns to the evaporation section (the area between the two condensing ends 21 where heat exchange medium vaporization can occur) by the suction force provided by the capillary structure. This cycle can achieve efficient heat transfer and cool the battery cell 50.

[0043] In the embodiment, the heat-conducting insulation layer 30 is filled between the battery cell 50 and the evaporation pipe 20, which can avoid the gap between the battery cell 50 and the evaporation pipe 20, and the gap between the multiple heat pipes 201 when there are multiple heat pipes 201, improve the contact between the battery cell 50 and the heat pipe 201, establish an effective heat transfer channel, reduce the interface contact thermal resistance, and maximize the heat dissipation effect.

[0044] In one embodiment, please continue to refer to Figure 3 The heat pipe 201 is flat on the side facing the heat-conducting insulation layer 30. In the figure, the top surface of the three heat pipes 201 is flat, which can increase the contact area between the heat-conducting insulation layer 30 and the heat pipe 201 and improve the heat dissipation efficiency. In other embodiments, the heat pipe 201 can also be a flat pipe.

[0045] In one embodiment, please refer to Figures 2-4 The cooling pipe 10 is also provided with a first air passage 102, and the evaporation pipe 20 is also provided with a second air passage 202 in communication with the first air passage 102. The cooling medium flows into the cooling pipe 10 from the liquid inlet 111 and flows out from the liquid outlet 112 to cool the condensing end 21. The air can flow into / out of the cooling pipe 10 from the first air inlet 113 and flow out / into the cooling pipe 10 from the second air inlet 114 to directly cool the battery cell 50. In the embodiment, the air passage is arranged in the photovoltaic module frame, and the battery cell 50 can be passively cooled to further improve the heat dissipation efficiency. When working,

[0046] In one embodiment, please continue to refer to Figure 2 The connecting part of the evaporation pipe 20 and the cooling pipe 10 is provided with a sealing member 40. Specifically, the cooling end 21 of the evaporation pipe 20 penetrates through the side wall of the cooling pipe 10 and extends into the cooling pipe 10 to be cooled by the cooling medium to form the condensing end 21. The sealing member 40 can form a good seal at the connecting part to prevent the cooling medium from leaking out of the cooling pipe 10. For example, the sealing member 40 can be an elastic sealing ring.

[0047] In one embodiment, the heat-conducting insulation layer 30 can include an adhesive and a heat-conducting filler. The adhesive can serve to connect the evaporation pipe 20 and the battery cell 50, and the heat-conducting filler can improve the heat conduction capacity of the heat-conducting insulation layer 30.

[0048] As some examples, the adhesive can be selected from at least one of epoxy, polyvinyl butyral, phenol formaldehyde resin, polyimide resin, polyethylene terephthalate, and polyphenylene ether. The thermally conductive filler can be selected from at least one of Al2O3, MgO, ZnO, BeO, BN, Si3N4, and AlN. It should be noted that the above-mentioned materials constituting the thermally conductive and insulating layer 30 are all conventional materials in the art, and do not belong to improvements on the materials themselves or the material formulations.

[0049] It should be noted that the photovoltaic module frame of the embodiments of the present application does not make special limitations on the specific shapes of the cooling pipe 10 and the evaporation pipe 20. Please refer to Figure 5 , Figure 5 are structural schematic diagrams of other photovoltaic module frames provided by the embodiments of the present application, wherein, in example (a), the cooling pipe 10 is a bent pipe and the evaporation pipe 20 is a straight pipe, and in example (b), the cooling pipe 10 is a straight pipe and the evaporation pipe 20 is a bent pipe. In other embodiments, the cooling pipe 10 and the evaporation pipe 20 can be both bent pipes or straight pipes, or other shapes. In addition, the number of the cooling pipe 10 and the evaporation pipe 20 is not limited in the embodiments of the present application, and can be selected according to actual needs. According to the inventive idea of the present application, the purposes of the present application can be achieved.

[0050] As an example, please continue to refer to Figure 1 , the cooling pipe 10 can include at least two first cooling pipes arranged in parallel to the first direction X, at least one second cooling pipe arranged in parallel to the second direction Y, and at least one evaporation pipe 20.

[0051] Taking three first cooling pipes 11A, 11B, 11C and three second cooling pipes 12A, 12B, 12C and four evaporation pipes 20 as examples, the outermost two first cooling pipes 11A, 11C are respectively provided with a liquid inlet 111 and a liquid outlet 112. During operation, the liquid inlet 111 and the liquid outlet 112 can be connected to a water cooler through a hose to ensure that the water temperature in the liquid cooling channel 101 of the cooling pipe 10 is stable and circulates. The second cooling pipes 12A, 12B, 12C are connected to all the first cooling pipes and are configured to flow liquid from the liquid inlet 111 and flow out from the liquid outlet 112 after flowing through all the first cooling pipes and the second cooling pipes, as shown by the arrows in the figure, wherein the second direction Y is perpendicular to the first direction X. The evaporation pipes 20 are arranged in parallel to the second direction Y, the evaporation pipes 20 are arranged between two adjacent first cooling pipes, and the condensation ends 21 of the evaporation pipes 20 respectively extend into the corresponding liquid cooling channels 101.

[0052] Specifically, a through hole can be formed on the right side of the left first cooling pipe 11A, and the condensing end 21 on the left side of the left evaporation pipe 20 can extend into the liquid cooling channel 101 through the through hole, as shown in Figure 1 and Figure 2 A through hole can be formed on the left side of the right first cooling pipe 11C, and the condensing end 21 on the right side of the right evaporation pipe 20 can extend into the liquid cooling channel 101 through the through hole, as shown in Figure 1 and Figure 6 A through hole can be formed on the left side and the right side of the middle first cooling pipe 11B respectively, and the condensing end 21 on the right side of the left evaporation pipe 20 can extend into the liquid cooling channel 101 through the left through hole, and the condensing end 21 on the left side of the right evaporation pipe 20 can extend into the liquid cooling channel 101 through the right through hole, as shown in Figure 1 and Figure 7 The whole photovoltaic module frame forms a regular rectangular frame. As an example, please refer to Figure 8 , and the three second cooling pipes can each include a liquid cooling channel 101 and a first air channel 102.

[0053] Further, the second cooling pipes and the evaporation pipes 20 can be arranged alternately along the first direction X. For example, please refer to Figure 1 , and the evaporation pipes 20 are arranged between the second cooling pipe 12A and the second cooling pipe 12B, and between the second cooling pipe 12B and the second cooling pipe 12C. By being arranged at intervals, the condensing end 21 of the evaporation pipe 20 can be cooled better, and the cooling efficiency of the photovoltaic module frame on the battery unit 50 can be improved.

[0054] The present application also provides a photovoltaic device, please refer to Figure 1 and Figure 9 , Figure 9 is a structural schematic diagram of a photovoltaic device provided by the present application, which can include a battery unit 50 and a photovoltaic module frame as described in the above embodiments. The battery unit 50 is arranged on the heat-conducting insulation layer 30. A column 70 can also be arranged at each corner of the photovoltaic module frame, and a Fresnel lens array 80 is arranged above the photovoltaic module frame through the column 70 to focus light on each battery unit 50.

[0055] In one embodiment, please refer to Figure 3 , the photovoltaic module frame can also include an encapsulation layer 60 for encapsulating the battery unit 50 to prevent damage to the battery unit 50 caused by temperature and humidity when working outdoors. As some examples, the encapsulation layer 60 can be a silicone layer or an epoxy resin layer. Preferably, the encapsulation layer 60 can fill the aforementioned groove 22.

[0056] For other working principles and processes of the photovoltaic device, see the foregoing description of the photovoltaic module frame in the embodiments of the present application, which will not be repeated here.

[0057] The following experiments are conducted on the photovoltaic module frame shown in Figure 1 to further illustrate the present application.

[0058] Comparative Example 1

[0059] The photovoltaic module frame shown in Figure 1 is replaced with a solid aluminum material of the same size, and four cells are connected in series and parallel, and then are turned on and fixed on the aluminum material. The cell electrical performance and temperature are tested under the condition of 500 times of light concentration and 1000 W / m 2 .

[0060] Comparative Example 2

[0061] The photovoltaic module frame shown in Figure 1 is used, and the heat-conducting insulation layer 30 is replaced with an organic silicone glue, and other conditions are the same as those in Comparative Example 1. A water chiller is started to test.

[0062] Example 1

[0063] Compared with Comparative Example 2, the difference lies in that the heat-conducting insulation layer 30 uses an epoxy resin and a zirconium oxide filler.

[0064] Example 2

[0065] Compared with Comparative Example 2, the difference lies in that the heat-conducting insulation layer 30 uses an epoxy resin and a silicon nitride filler.

[0066] Example 3

[0067] Compared with Comparative Example 2, the difference lies in that the heat-conducting insulation layer 30 uses an epoxy resin and a high-thermal-conductivity beryllium oxide filler, and all the air channels in the photovoltaic module frame are cancelled, and a frame substrate is used instead (i.e., the air channels are filled as solid).

[0068] Comparative Example 3

[0069] Compared with Comparative Example 2, the difference lies in that the heat-conducting insulation layer 30 uses an epoxy resin and a high-thermal-conductivity beryllium oxide filler, and a water chiller is not started.

[0070] Table 1: Electrical performance data table of each example module

[0071] Current (A) Voltage (V) Power (W) Temperature (°C) Water on Air on Comparative Example 1 13.98 4.80 67.10 180.2 No No Comparative Example 2 13.96 4.96 69.24 149.6 Yes Yes Example 1 13.98 5.74 80.25 73.1 Yes Yes Example 2 14.00 5.88 82.32 57.6 Yes Yes Example 3 13.94 5.38 75.00 114.4 Yes No Comparative Example 3 13.98 4.89 68.36 168.8 No Yes

[0072] The experimental results are shown in Table 1. It can be seen that the temperature of the photovoltaic module of Comparative Example 1 using aluminum profiles instead of the frame assembly can reach 180℃. Compared with Comparative Example 1, Comparative Example 2, Comparative Example 3 and Examples 1-3, the photovoltaic module frame of the present application can reduce the temperature of the battery cell 50 during operation. However, in Comparative Example 2, the silicone is used instead of the heat-conducting insulation layer 30, which plays a role in insulating and filling the gap, and to some extent, achieves the heat dissipation function, but its heat conduction ability is poor, and the effect is poor. In Examples 1 and 2, the heat-conducting insulation layer 30 uses different materials, and the temperature of the battery cell 50 is relatively low. In Example 2, the battery cell 50 has good electrical performance and the highest power. In Example 3, the air channel is not used for heat dissipation, and the overall temperature of the battery cell 50 is higher than that of Example 2, so the air channel can further improve the heat dissipation effect, and in windy weather, the cooling effect is better. Although Comparative Example 3 uses the above photovoltaic module frame, the water chiller is not started, and the cooling section of the heat pipe only relies on natural air cooling, and the heat dissipation capacity is limited.

[0073] Therefore, the key to solving the technical problems of the present application is to set the liquid cooling channel 101 in the cooling pipe 10 to cool the condensing end 21 of the evaporating pipe 20, and set the heat-conducting insulation layer 30 between the evaporating pipe 20 and the battery cell 50 to enhance heat conduction. Further, the first air channel 102 is provided in the cooling pipe 10, and the second air channel 202 is provided in the evaporating pipe 20 and communicates with the first air channel 102, which can maximize the cooling efficiency and is a preferred scheme of the present application.

[0074] The above provides a photovoltaic module frame and a photovoltaic device. The principles and implementation modes of the present application are described in detail in the above. It should be noted that the description of each embodiment in the present application has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0075] It should be understood that the terms "comprising" or "including" indicate the presence of the stated features, steps, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," and "comprising at least one of the following," as used in this application, can be interpreted as inclusive, or mean any one or any combination thereof. For example, "comprising at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C," and similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0076] It should be understood that although the terms first, second, third, etc., may be used in this document to describe various types of information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the singular forms “a,” “an,” and “the” used in this document are intended to also include the plural forms, unless the context indicates otherwise.

[0077] It should be understood that the terms "top", "bottom", "upper", "lower", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application.

[0078] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. The technical features of the technical solution of this application can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are also included within the patent protection scope of this application, as long as the combination of these technical features does not contradict each other.

Claims

1. A photovoltaic module frame, characterized by, include: Cooling pipes, wherein liquid cooling channels are provided within the cooling pipes; At least one evaporation pipe is provided, and at least one heat pipe for capacitive heat exchange working fluid is provided inside the evaporation pipe. The two ends of the heat pipe are closed ends and extend through the side wall of the cooling pipe to the liquid cooling channel to form two condensation ends. The surface of the evaporation pipe near the battery cell is provided with a groove. A thermally conductive insulating layer is disposed in the groove to support and cool the battery cell.

2. The photovoltaic module frame of claim 1, wherein, The side of the heat pipe facing the thermally conductive insulating layer is a plane.

3. The photovoltaic module frame of claim 1, wherein, The cooling pipe is also equipped with a first air passage; The evaporation pipe is also provided with a second air channel that communicates with the first air channel.

4. The photovoltaic module frame of claim 1, wherein, A seal is provided at the connection between the evaporation pipe and the cooling pipe.

5. The photovoltaic module frame of claim 1, wherein, The thermally conductive insulating layer comprises an adhesive and a thermally conductive filler.

6. The photovoltaic module frame according to any of claims 1-5, wherein, The cooling pipe includes: At least two first cooling pipes are arranged parallel to the first direction, and the two outermost first cooling pipes are respectively provided with a liquid inlet and a liquid outlet; At least one second cooling pipe is arranged parallel to the second direction, the second cooling pipe is connected to all the first cooling pipes, and is configured such that liquid flows in from the liquid inlet, flows out from the liquid outlet after flowing through all the first cooling pipes and the second cooling pipes, wherein the second direction is perpendicular to the first direction; The at least one evaporation pipe is arranged parallel to the second direction, the evaporation pipe is arranged between two adjacent first cooling pipes, and the condensation end extends into the corresponding liquid cooling channel.

7. The photovoltaic module frame of claim 6, wherein, The second cooling pipe and the evaporation pipe are arranged alternately along the first direction.

8. A photovoltaic device, characterized by It includes battery cells and a photovoltaic module frame as described in any one of claims 1-7; The battery cell is disposed on the thermally conductive insulating layer.

9. The photovoltaic device of claim 8, wherein, Also includes: An encapsulation layer is used to encapsulate the battery cell.

10. The photovoltaic device of claim 9, wherein, The encapsulation layer is a silicone layer or an epoxy resin layer.

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