Double-sided perovskite photovoltaic module cooling system and method

Abstract

The invention provides a double-sided perovskite photovoltaic module cooling system and method, and the system is characterized in that the system comprises two groups of independent cooling channels, and the two groups of cooling channels are respectively arranged on the inner walls of packaging glass at two sides for packaging a double-sided perovskite photovoltaic module. The cooling channel corresponds to an inactive area of the double-sided perovskite photovoltaic module; according to the invention, the inner wall side of the packaging glass is provided with the cooling channel which is closer to a heat source of the perovskite photovoltaic device, and the heat conduction efficiency of the device can be improved through the flowing of the cooling liquid, thereby effectively improving the heat dissipation performance of the double-sided perovskite photovoltaic module, and achieving a better heat dissipation effect.

Description

Technical Field

[0001] The present invention belongs to the field of perovskite solar cells, and particularly relates to a cooling system and method for a double-sided perovskite photovoltaic module. Background Art

[0002] With the development of perovskite solar cell technology, metal oxide transparent top electrodes represented by ITO and IWO have gradually become new top electrode technologies due to their advantages of not easily reacting with migrating ions in functional layers and having high stability. On this basis, perovskite tandem devices and double-sided perovskite photovoltaic devices have also received increasing attention. Double-sided perovskite photovoltaic devices can more effectively utilize the sunlight reflected from the ground, further improving the device efficiency and power generation. However, at the same time, double-sided perovskite photovoltaic devices will also cause higher temperature rises, thus affecting the long-term working stability of the devices.

[0003] Currently, the commonly used photovoltaic device cooling technologies include passive cooling technologies and active cooling technologies, among which: Passive cooling includes natural convection cooling, radiative cooling, heat pipe cooling, phase change material cooling, etc.

[0004] Active cooling technologies include forced air cooling, forced liquid cooling, thermoelectric cooling, jet impingement cooling, direct contact cooling, etc. In jet impingement cooling of active cooling, the fluid is ejected from the microholes onto the cell surface at a high speed, and the stagnant region under the jet is used for efficient heat transfer; direct contact cooling is to directly contact the cooling medium with the surface of the photovoltaic module for heat exchange, which is applicable to high-concentration photovoltaic systems.

[0005] Most of the currently commonly used cooling technologies act on the backlight side of photovoltaic devices, which will have a greater impact on the light reception on the back of the module. Therefore, they are not very suitable for cooling double-sided photovoltaic devices.

[0006] At the same time, currently, during the testing process of double-sided photovoltaic devices, environmental cooling is mainly adopted, and the cooling of photovoltaic devices is achieved by reducing the temperature of the testing environment. However, for large-area double-sided photovoltaic modules, their temperature rises rapidly under illumination, and it is difficult for environmental cooling to achieve effective temperature control, and it is also difficult to ensure the temperature uniformity of the module. Summary of the Invention

[0007] The purpose of the present invention is to provide a cooling system and method for a double-sided perovskite photovoltaic module, which solves the defect of poor cooling effect of the existing double-sided perovskite photovoltaic module.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is: A cooling system for a double-sided perovskite photovoltaic module provided by the present invention, a cooling system for a double-sided perovskite photovoltaic module, characterized in that it includes two independent cooling channels, and the two cooling channels are respectively arranged on the inner walls of the two encapsulation glasses for encapsulating the double-sided perovskite photovoltaic module, and the cooling channels correspond to the non-active regions of the double-sided perovskite photovoltaic module.

[0009] Preferably, each group of the cooling channels includes a frame cooling sub-channel and a micro cooling sub-channel, wherein: There are two frame cooling sub-channels, which are respectively arranged on the two side edges of the encapsulation glass; There are multiple micro cooling sub-channels, and the multiple micro cooling sub-channels are arranged side by side between the two frame cooling sub-channels, and each micro cooling sub-channel is located within the non-active region of the double-sided perovskite photovoltaic module.

[0010] Preferably, the aperture of each frame cooling sub-channel is 200 - 500 μm.

[0011] Preferably, the aperture of each micro cooling sub-channel is 50 - 100 μm.

[0012] Preferably, it is characterized in that each group of cooling channels is formed on the inner wall of the encapsulation glass by laser-induced etching, plasma etching or soft lithography.

[0013] Preferably, the coolant in the cooling channel is water, ethyl acetate or glycerol.

[0014] Preferably, the double-sided perovskite photovoltaic module body includes a transparent top electrode, a first charge transport layer, a perovskite layer, a second charge transport layer, a transparent bottom electrode and a glass substrate, wherein: The transparent bottom electrode, the second charge transport layer, the perovskite layer, the first charge transport layer and the transparent top electrode are sequentially arranged on the glass substrate from bottom to top.

[0015] Preferably, the transparent top electrode is ITO, IWO or IZO; the first charge transport layer is Spiro-OMeTAD, PTAA or P3HT; the chemical general formula of the perovskite layer is ABX3, where A is FA, Cs, MA, K or Rb, B is Pb or Sn, and X is I, Br or Cl; the second charge transport layer is SnO2, TiO2 or ZnO; the transparent bottom electrode is ITO, FTO or AZO.

[0016] A method for cooling a double-sided perovskite photovoltaic module includes the following steps: Arrange a group of independent cooling channels on the inner walls of the two encapsulation glasses for encapsulating the double-sided perovskite photovoltaic module respectively; and the cooling channels correspond to the non-active regions of the double-sided perovskite photovoltaic module; Obtain the real-time temperature value of the bifacial perovskite photovoltaic module; Control the flow rate of the coolant in the cooling channels according to the obtained real-time temperature value to achieve cooling of the bifacial perovskite photovoltaic module.

[0017] Preferably, each group of the cooling channels includes a frame cooling sub-channel and a micro-cooling sub-channel, wherein: There are two frame cooling sub-channels, which are respectively arranged on both sides of the encapsulation glass; There are multiple micro-cooling sub-channels, and the multiple micro-cooling sub-channels are arranged side by side between the two frame cooling sub-channels, and each micro-cooling sub-channel is located in the non-active area of the bifacial perovskite photovoltaic module. Compared with the prior art, the beneficial effects of the present invention are: A cooling system for a bifacial perovskite photovoltaic module provided by the present invention sets cooling channels on the inner wall side of the encapsulation glass, which is closer to the heat source of the perovskite photovoltaic device. The heat conduction efficiency of the device can be improved by the flow of the coolant, thereby effectively improving the heat dissipation performance of the bifacial perovskite photovoltaic module and achieving a better heat dissipation effect.

[0018] Furthermore, the two frame cooling sub-channels and the multiple micro-cooling sub-channels are sequentially connected to form an S-shaped cooling channel, which is used to correspond to the non-active area of the bifacial perovskite photovoltaic module. At the same time, it can expand the contact area between the cooling channel and the bifacial perovskite photovoltaic module to obtain a better cooling effect. In addition, it can maintain a more uniform coolant flow rate, and the temperature distribution of the module is more uniform.

[0019] A cooling method for a bifacial perovskite photovoltaic module provided by the present invention constructs cooling channels on the encapsulation glass of the bifacial perovskite module, controls the cooling channels within the range of the non-active area of the perovskite module, and at the same time, effectively cools the bifacial perovskite module by controlling the flow rate of the coolant, improving the efficiency and stability of the bifacial perovskite module. Description of the Drawings

[0020] Figure 1 is a schematic cross-sectional view of a bifacial perovskite photovoltaic module; Figure 2 is a schematic structural view of a bifacial perovskite photovoltaic module; Figure 3 is a schematic front view of a cooling system for a bifacial perovskite photovoltaic module; Among them, 1, active area; 2, non-active area. Detailed Embodiments

[0021] In the following description, specific details such as specific system architectures, technologies, etc. are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0022] It should be understood that when used in the specification of the present application and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0023] It should also be understood that the term "and / or" used in the specification of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0024] As used in the specification of the present application and the appended claims, the term "if" can be interpreted as "when" or "once" or "in response to determining" or "in response to detecting" according to the context. Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted as meaning "once determined" or "in response to determining" or "once [the described condition or event] is detected" or "in response to detecting [the described condition or event]" according to the context.

[0025] In addition, in the description of the specification of the present application and the appended claims, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0026] The reference to "one embodiment" or "some embodiments" etc. described in the specification of the present application means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way. The terms "comprising", "including", "having", and their variants all mean "including but not limited to", unless otherwise specifically emphasized in another way.

[0027] Embodiment 1 A cooling system for a double-sided perovskite photovoltaic module provided in this embodiment includes two independent cooling channels. The two cooling channels are respectively arranged on the inner walls of the two encapsulation glasses used for encapsulating the double-sided perovskite photovoltaic module, and the cooling channels correspond to the non-active regions of the double-sided perovskite photovoltaic module.

[0028] The non-active regions generally refer to the edges of the photovoltaic module or the gaps between the cells. These regions do not participate in the photovoltaic conversion, so they are suitable for arranging the cooling channels.

[0029] The cooling channels are directly integrated on the inner walls of the encapsulation glasses, which not only saves space but also improves the integrity and aesthetics of the system. The encapsulation glasses usually adopt materials with high light transmittance to ensure that the light absorption efficiency of the photovoltaic module is not affected.

[0030] The working principle of this embodiment: For a double-sided perovskite photovoltaic module, its temperature rise mainly comes from the thermal effect during the photovoltaic conversion process and the heat loss caused by non-ideal factors (such as defects, impurities, interface contact resistance, etc.) in the photovoltaic module. And the double-sided perovskite photovoltaic module is usually encapsulated by glass on both sides, making it difficult to achieve effective heat conduction, resulting in a continuous increase in the battery temperature. In this application, cooling channels are arranged on the inner wall side of the encapsulation glass, which is closer to the heat source of the perovskite photovoltaic device. The heat conduction efficiency of the device can be improved by the flow of the coolant, thereby effectively improving the heat dissipation performance of the double-sided perovskite photovoltaic module and achieving a better heat dissipation effect. Embodiment 2 As Figure 3 shown, a cooling system for a double-sided perovskite photovoltaic module provided in this embodiment includes two independent cooling channels. The two cooling channels are respectively arranged on the inner walls of the two encapsulation glasses used for encapsulating the double-sided perovskite photovoltaic module, and the cooling channels correspond to the non-active regions of the double-sided perovskite photovoltaic module, so as to effectively reduce the working temperature of the double-sided perovskite photovoltaic module without affecting the photovoltaic conversion efficiency.

[0031] The non-active regions generally refer to the edges of the photovoltaic module or the gaps between the cells. These regions do not participate in the photovoltaic conversion, so they are suitable for arranging the cooling channels.

[0032] The cooling channels include a frame cooling sub-channel and a micro cooling sub-channel, where: There are two frame cooling sub-channels 11, which are respectively arranged on the two sides of the encapsulation glass. The aperture of each frame cooling sub-channel 11 is 200 - 500 μm.

[0033] A plurality of the micro-cooling sub-channels 12 are provided, and the plurality of micro-cooling sub-channels are arranged side by side between two frame cooling sub-channels 11. Each micro-cooling sub-channel is located in the non-active area of the double-sided perovskite photovoltaic module, so as to avoid optical influence on the double-sided perovskite photovoltaic module.

[0034] The aperture of each micro-cooling sub-channel is 50-100 μm.

[0035] The two frame cooling sub-channels 11 and the plurality of micro-cooling sub-channels 12 are connected in sequence to form an S-shaped cooling channel, which is used to correspond to the non-active area of the double-sided perovskite photovoltaic module. At the same time, it can expand the contact area between the cooling channel and the double-sided perovskite photovoltaic module to obtain a better cooling effect. In addition, it can maintain a more uniform coolant flow rate and the component temperature distribution is more uniform.

[0036] Embodiment 3 A cooling system for a double-sided perovskite photovoltaic module provided in this embodiment includes two groups of independent cooling channels. The two groups of cooling channels are respectively arranged on the inner walls of the two encapsulation glasses used to encapsulate the double-sided perovskite photovoltaic module, and the cooling channels correspond to the non-active areas of the double-sided perovskite photovoltaic module, so as to effectively reduce the working temperature of the double-sided perovskite photovoltaic module without affecting the photoelectric conversion efficiency.

[0037] The non-active area generally refers to the edge of the photovoltaic module or the gap between the battery cells. These areas do not participate in the photoelectric conversion, so it is suitable to arrange the cooling channels.

[0038] The cooling channel includes a frame cooling sub-channel and a micro-cooling sub-channel. Among them, the frame cooling sub-channel 11 and the micro-cooling sub-channel 12 are both formed on the inner wall of the encapsulation glass by laser-induced etching, plasma etching or soft lithography methods.

[0039] Two frame cooling sub-channels 11 are provided, which are respectively arranged on the two side edges of the encapsulation glass. A plurality of micro-cooling sub-channels 12 are provided, and the plurality of micro-cooling sub-channels are arranged side by side between the two frame cooling sub-channels 11. Each micro-cooling sub-channel is located in the non-active area of the double-sided perovskite photovoltaic module.

[0040] The two frame cooling sub-channels 11 and the plurality of micro-cooling sub-channels 12 are connected in sequence to form an S-shaped cooling channel.

[0041] In this application, a cooling channel is constructed on the encapsulation glass of the double-sided perovskite module, and the cooling channel is controlled within the range of the non-active area of the perovskite module, so as to effectively reduce the device temperature and improve the efficiency and stability of the double-sided perovskite module.

[0042] Embodiment 4 A cooling system for a double-sided perovskite photovoltaic module provided in this embodiment includes two independent cooling channels, which are respectively arranged on the inner walls of the two encapsulation glasses used for encapsulating the double-sided perovskite photovoltaic module, and the cooling channels correspond to the inactive regions of the double-sided perovskite photovoltaic module, so as to effectively reduce the working temperature of the double-sided perovskite photovoltaic module without affecting the photoelectric conversion efficiency.

[0043] The inactive regions generally refer to the gaps between the edges of the photovoltaic module or between the cells, and these regions do not participate in photoelectric conversion, so they are suitable for arranging cooling channels.

[0044] The coolant in the cooling channel is water, ethyl acetate or glycerol.

[0045] Example 5 A cooling system for a double-sided perovskite photovoltaic module provided in this embodiment includes two independent cooling channels, which are respectively arranged on the inner walls of the two encapsulation glasses used for encapsulating the double-sided perovskite photovoltaic module, and the cooling channels correspond to the inactive regions of the double-sided perovskite photovoltaic module, so as to effectively reduce the working temperature of the double-sided perovskite photovoltaic module without affecting the photoelectric conversion efficiency.

[0046] The inactive regions generally refer to the gaps between the edges of the photovoltaic module or between the cells, and these regions do not participate in photoelectric conversion, so they are suitable for arranging cooling channels.

[0047] Each group of the cooling channels is provided with a coolant inlet end and an outlet end. Among them, the coolant inlet end and the outlet end of the cooling channel are respectively communicated with the coolant outlet end and the coolant inlet end of an external cooling system.

[0048] Example 6 As Figure 1 and Figure 2 shown, a cooling system for a double-sided perovskite photovoltaic module provided in this embodiment, the double-sided perovskite photovoltaic module body includes a transparent top electrode 101, a first charge transport layer 102, a perovskite layer 103, a second charge transport layer 104, a transparent bottom electrode 105, a glass bottom substrate 106 and a glass top substrate, wherein: On the glass substrate 106, a transparent bottom electrode 105, a second charge transport layer 104, a perovskite layer 103, a first charge transport layer 102, a transparent top electrode 101 and a glass top substrate are sequentially arranged from bottom to top.

[0049] On both the glass bottom substrate 106 and the glass top substrate, a group of independent cooling channels are etched, and each group of cooling channels corresponds to the inactive region of the double-sided perovskite photovoltaic module, so as to effectively reduce the working temperature of the double-sided perovskite photovoltaic module without affecting the photoelectric conversion efficiency.

[0050] The inactive region generally refers to the edge of the photovoltaic module or the gap between the cells. These regions do not participate in the photovoltaic conversion and are therefore suitable for arranging cooling channels.

[0051] The cooling channels include a frame cooling sub-channel and a micro cooling sub-channel. Among them, both the frame cooling sub-channel 11 and the micro cooling sub-channel 12 are formed on the inner wall of the encapsulation glass by laser-induced etching, plasma etching or soft lithography methods.

[0052] There are two frame cooling sub-channels 11, which are respectively arranged on both sides of the encapsulation glass. There are multiple micro cooling sub-channels 12, and the multiple micro cooling sub-channels are arranged side by side between the two frame cooling sub-channels 11. Each micro cooling sub-channel is located in the inactive region of the double-sided perovskite photovoltaic module.

[0053] The two frame cooling sub-channels 11 and the multiple micro cooling sub-channels 12 are connected in sequence to form an S-shaped cooling channel.

[0054] In this application, a cooling channel is arranged on the inner wall side of the encapsulation glass, which is closer to the heat source of the perovskite photovoltaic device. The heat conduction efficiency of the device can be improved by the flow of the coolant, thereby effectively improving the heat dissipation performance of the double-sided perovskite photovoltaic module and achieving a good heat dissipation effect.

[0055] Example 7 A cooling system for a double-sided perovskite photovoltaic module provided in this embodiment. The double-sided perovskite photovoltaic module body includes a transparent top electrode 101, a first charge transport layer 102, a perovskite layer 103, a second charge transport layer 104, a transparent bottom electrode 105, a glass bottom substrate 106 and a glass top substrate, where: On the glass substrate 106, a transparent bottom electrode 105, a second charge transport layer 104, a perovskite layer 103, a first charge transport layer 102, a transparent top electrode 101 and a glass top substrate are sequentially arranged from bottom to top.

[0056] The transparent top electrode 101 is ITO, IWO or IZO.

[0057] The first charge transport layer 102 is Spiro-OMeTAD, PTAA or P3HT.

[0058] The chemical general formula of the perovskite layer 103 is ABX3, where A is FA, Cs, MA, K or Rb, B is Pb or Sn, and X is I, Br or Cl.

[0059] The second charge transport layer 104 is a metal oxide of SnO2, TiO2 or ZnO.

[0060] The transparent bottom electrode 105 is ITO, FTO or AZO.

[0061] Example 8 A cooling method for a double-sided perovskite photovoltaic module provided in this embodiment includes the following steps: On the inner walls of the two sides of the glass for encapsulating the double-sided perovskite photovoltaic module, a group of independent cooling channels are respectively arranged; the cooling channels are arranged in the non-active area of the photovoltaic module, avoiding the occlusion of the active area and ensuring that the photoelectric conversion efficiency of the photovoltaic module is not affected.

[0062] The non-active area generally refers to the edge of the photovoltaic module or the gap between the battery cells. These areas do not participate in the photoelectric conversion, so it is suitable to arrange the cooling channels.

[0063] Obtain the real-time temperature value of the double-sided perovskite photovoltaic module, and control the flow rate of the coolant in the cooling channel according to the obtained real-time temperature value. Through the heat exchange between the coolant and the double-sided perovskite photovoltaic module, the cooling and temperature reduction of the double-sided perovskite photovoltaic module are realized.

[0064] The cooling channel includes a frame cooling sub-channel and a micro-cooling sub-channel. Among them, both the frame cooling sub-channel 11 and the micro-cooling sub-channel 12 are formed on the inner wall of the encapsulating glass by laser-induced etching, plasma etching or soft lithography methods.

[0065] There are two frame cooling sub-channels 11, which are respectively arranged on the two sides of the encapsulating glass. There are multiple micro-cooling sub-channels 12, and the multiple micro-cooling sub-channels are arranged side by side between the two frame cooling sub-channels 11, and each micro-cooling sub-channel is located in the non-active area of the double-sided perovskite photovoltaic module.

[0066] The two frame cooling sub-channels 11 and the multiple micro-cooling sub-channels 12 are connected in sequence to form an S-shaped cooling channel.

[0067] In this application, a cooling channel is constructed on the encapsulating glass of the double-sided perovskite module, and the cooling channel is controlled within the range of the non-active area of the perovskite module. At the same time, by controlling the flow rate of the coolant, the effective low-temperature cooling of the double-sided perovskite module is realized, and the efficiency and stability of the double-sided perovskite module are improved.

[0068] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A double-sided perovskite photovoltaic module cooling system, characterized in that: It comprises two groups of independent cooling channels, which are respectively arranged on the inner walls of the packaging glass on both sides for packaging the double-sided perovskite photovoltaic module, and the cooling channels correspond to the inactive areas of the double-sided perovskite photovoltaic module.

2. A double-sided perovskite photovoltaic module cooling system according to claim 1, characterized in that: Each group of cooling channels includes frame cooling sub-channels and micro cooling sub-channels, wherein: The frame cooling sub-channels are provided with two, which are arranged on both sides of the packaging glass respectively; The micro-cooling sub-channels are provided in plurality, and the plurality of micro-cooling sub-channels are arranged side by side between two frame cooling sub-channels, and each micro-cooling sub-channel is located in the inactive area of ​​the double-sided perovskite photovoltaic module.

3. A double-sided perovskite photovoltaic module cooling system according to claim 2, characterized in that: The aperture of each frame cooling sub-channel is 200-500 μm.

4. A double-sided perovskite photovoltaic module cooling system according to claim 2, characterized in that: The pore size of each micro-cooling sub-channel is 50-100 μm.

5. A double-sided perovskite photovoltaic module cooling system according to any one of claims 1 to 4, characterized in that: Each set of cooling channels is formed on the inner wall of the packaging glass by laser induced etching, plasma etching or soft lithography.

6. A double-sided perovskite photovoltaic module cooling system according to claim 5, characterized in that: The cooling liquid in the cooling channel is water, ethyl acetate or glycerin.

7. A double-sided perovskite photovoltaic module cooling system according to claim 5, characterized in that: The double-sided perovskite photovoltaic module body comprises a transparent top electrode, a first charge transport layer, a perovskite layer, a second charge transport layer, a transparent bottom electrode and a glass substrate, wherein: A transparent bottom electrode, a second charge transport layer, a perovskite layer, a first charge transport layer and a transparent top electrode are sequentially arranged on the glass substrate from bottom to top.

8. A double-sided perovskite photovoltaic module cooling system according to claim 7, characterized in that: The transparent top electrode is ITO, IWO or IZO; the first charge transport layer is Spiro-OMeTAD, PTAA or P3HT; the general chemical formula of the perovskite layer is ABX3, wherein A is FA, Cs, MA, K or Rb, B is Pb or Sn, and X is I, Br or Cl; the second charge transport layer is SnO2, TiO2 or ZnO; the transparent bottom electrode is ITO, FTO or AZO.

9. A method for cooling a double-sided perovskite photovoltaic module, characterized in that: The following steps are involved: A set of independent cooling channels are arranged on the inner walls of the encapsulation glass on both sides for encapsulating the double-sided perovskite photovoltaic module; and the cooling channels correspond to the inactive areas of the double-sided perovskite photovoltaic module; Get the real-time temperature value of the bifacial perovskite photovoltaic module; The flow rate of the coolant in the cooling channel is controlled according to the real-time temperature value obtained to achieve cooling of the double-sided perovskite photovoltaic module.

10. A method for cooling a double-sided perovskite photovoltaic module according to claim 9, characterized in that: Each group of cooling channels includes frame cooling sub-channels and micro cooling sub-channels, wherein: The frame cooling sub-channels are provided with two, which are arranged on both sides of the packaging glass respectively; The micro-cooling sub-channels are provided in plurality, and the plurality of micro-cooling sub-channels are arranged side by side between two frame cooling sub-channels, and each micro-cooling sub-channel is located in the inactive area of ​​the double-sided perovskite photovoltaic module.

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