High-efficiency thermal coupling structure of photovoltaic cell and heat collector

Abstract

The application discloses a high-efficiency thermal coupling structure of a photovoltaic cell and a heat collector. The high-efficiency thermal coupling structure comprises a transition assembly arranged between the photovoltaic cell and the heat collector to perform heat transfer. The transition assembly is adapted to deform to offset the temperature deformation difference between the photovoltaic cell and the heat collector. The application has the beneficial effect that the transition assembly arranged between the photovoltaic cell and the heat collector offsets the thermal stress generated due to the temperature rise of the photovoltaic cell and the heat collector under working conditions and the different thermal expansion coefficients. The deformation difference of the photovoltaic cell and the heat collector under the heated condition is compensated by the deformation capacity of the transition assembly, so that the photovoltaic cell is protected from irreversible structural damage due to the thermal stress.

Description

Technical Field

[0001] This application relates to the field of solar collectors, and in particular to a high-efficiency thermal coupling structure between a photovoltaic cell and a solar collector. Background Technology

[0002] The interface structure between photovoltaic cells and solar collectors is a core technological aspect of integrated photovoltaic and solar thermal systems. Its heat transfer efficiency and mechanical reliability directly determine the reliability of the photovoltaic cell's operating temperature and the efficiency of the solar collector. An ideal interface structure must simultaneously achieve high thermal conductivity and strong adaptability to thermal stress to ensure efficient heat dissipation while preventing damage to the photovoltaic cells due to thermal stress.

[0003] In traditional PVT modules, significant contact thermal resistance exists between the photovoltaic cells and the collector. Conventional thermally conductive interface materials, such as silicone grease, are prone to aging under long-term high-temperature and thermal cycling conditions, leading to a sharp increase in interface thermal resistance. If the photovoltaic cell's operating temperature rises by more than 15°C from its optimal operating temperature, the power generation efficiency will decrease by more than 10%. More seriously, due to the significant difference in the thermal expansion coefficients of the cell and collector materials, the high thermal stress generated during drastic temperature fluctuations can cause microcracks in the cells, solder joint fatigue, and interface delamination, resulting in irreversible structural damage. Therefore, a new solution is urgently needed to address these issues. Utility Model Content

[0004] The purpose of this application is to provide a high-efficiency thermal coupling structure between a photovoltaic cell and a solar collector that can solve at least one of the defects in the above-mentioned background technology.

[0005] To achieve at least one of the above objectives, this application provides a high-efficiency thermal coupling structure between a photovoltaic cell and a solar collector, including a transition component disposed between the photovoltaic cell and the solar collector for heat transfer; the transition component is adapted to offset deformation based on the temperature deformation difference between the photovoltaic cell and the solar collector.

[0006] Preferably, one side of the transition component is coupled with one of the components of the photovoltaic cell or the solar collector, and the other side of the transition component is coupled with the remaining components through a thermally conductive interface layer.

[0007] Preferably, the two sides of the transition component are respectively connected to the photovoltaic cell and the collector through a thermally conductive interface layer.

[0008] Preferably, the transition component has a hollow structure.

[0009] Preferably, the transition component includes a first upper plate, a first lower plate, and two side plates; the first upper plate and the first lower plate are flat plates and are arranged parallel to each other at intervals; the first upper plate cooperates with the photovoltaic cell, and the first lower plate cooperates with the solar collector; the two ends of the first upper plate and the first lower plate are connected by the two side plates, and multiple inclined heat-conducting ribs are arranged between the first upper plate and the first lower plate.

[0010] Preferably, the two side plates are parallel flat plates, and the side plates are inclined so that the transition component has a parallelogram structure, and the inclined heat-conducting ribs are arranged parallel to the side plates.

[0011] Preferably, the two side plates are V-shaped angled plates, and the inclined heat-conducting ribs are divided into two groups that are close to the two side plates respectively. The structure of the inclined heat-conducting ribs in a single group is the same as the structure of the side plate on the corresponding side.

[0012] Preferably, the transition component includes a second upper plate and a second lower plate that are attached to each other, the second upper plate cooperating with the photovoltaic cell and the second lower plate cooperating with the solar collector; and a deformable section is provided on the second upper plate and / or the second lower plate.

[0013] Preferably, the cross-sectional shape of the deformable segment is trapezoidal, and the number of deformable segments provided on a single plate segment is multiple.

[0014] Preferably, the transition component is made of a flexible thin plate or a deformation memory alloy.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: In the technical solution of this application, a transition component is set between the photovoltaic cell and the collector to counteract the thermal stress generated by the photovoltaic cell and the collector due to their different coefficients of thermal expansion when they heat up under operating conditions. The deformation difference between the photovoltaic cell and the collector under heating conditions is compensated by the deformation capability of the transition component itself, thereby protecting the photovoltaic cell from irreversible structural damage due to thermal stress. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the overall structure of the third embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the overall structure of the fourth embodiment of the present utility model.

[0020] In the figure: First transition component 1, first upper plate 110, first lower plate 120, side plate 130, inclined heat-conducting rib 140, second transition component 2, deformation section 201, inclined section 202, connecting section 203, second upper plate 210, second lower plate 220, photovoltaic cell 3, collector 4, heat-conducting interface layer 5. Detailed Implementation

[0021] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0025] A preferred embodiment of this application, such as Figure 1 As shown, a high-efficiency thermal coupling structure between a photovoltaic cell 3 and a solar collector 4 includes a transition component, which is disposed between the photovoltaic cell 3 and the solar collector 4 for heat transfer; the transition component is adapted to offset the deformation based on the temperature deformation difference between the photovoltaic cell 3 and the solar collector 4.

[0026] It should be understood that in the traditional heat transfer connection between photovoltaic cell 3 and collector 4, only ordinary thermally conductive interface materials such as silicone ester are used. These materials have poor heat resistance and insufficient stability, and cannot effectively complete the efficient heat transfer between photovoltaic cell 3 and collector 4 in the long term. Furthermore, the photovoltaic cell 3 and collector 4 have different coefficients of thermal expansion. If they are tightly attached, their lateral expansion deformation will be different under the working temperature rise conditions, which will lead to serious damage such as microcracks in photovoltaic cell 3 and interface delamination. Therefore, this application sets a transition component between photovoltaic cell 3 and collector 4. Through a certain deformation effect of the transition component, it plays a deformation buffer role between photovoltaic cell 3 and collector 4. Even if the expansion lengths of photovoltaic cell 3 and collector 4 on both sides are different, the transition component can rely on its own deformation to keep the heat transfer interface intact.

[0027] Understandably, when the temperature rises, the photovoltaic cell 3 and the collector 4 will also undergo longitudinal deformation and expansion. Since the photovoltaic cell 3 and the collector 4 are installed inside a confined device, their longitudinal deformation and expansion will cause them to squeeze each other, which will also lead to damage to the photovoltaic cell 3. Therefore, the transition component can not only compensate for the different deformation differences between the photovoltaic cell 3 and the collector 4 in the lateral direction, but also undergo a certain deformation in the longitudinal direction to compensate for the mutual compression of their expansion, thereby greatly reducing thermal stress and effectively protecting the photovoltaic cell 3 from damage.

[0028] Specifically, such as Figure 3 and Figure 4 As shown, the transition component does not need to be directly connected with the photovoltaic cell 3 and the collector 4, but can be indirectly connected with the photovoltaic cell 3 and the collector 4 through the thermal interface layer 5.

[0029] It should be understood that if the shape of the transition component is relatively regular and can fit tightly against the photovoltaic cell 3 and the collector 4, then it can directly contact and cooperate with the photovoltaic cell 3 and the collector 4. However, if the shape of the transition component has protrusions or depressions, the transition component cannot fit tightly against the photovoltaic cell 3 and the collector 4. If the thermal interface layer 5 is not used, the heat transfer area will be greatly reduced, resulting in the inability of the photovoltaic cell 3 to transfer heat to the collector 4 quickly and effectively, causing the photovoltaic cell 3 to overheat and waste heat. After the photovoltaic cell 3 heats up, the power generation efficiency will also decrease.

[0030] It is understandable that the transition component can directly cooperate with the photovoltaic cell 3 and the collector 4 on both sides; it can also directly cooperate with one of the components of the photovoltaic cell 3 or the collector 4 on one side, and indirectly cooperate with the remaining component through the thermal interface layer 5 on the other side; or it can indirectly cooperate with both components through the thermal interface layer 5 on both sides.

[0031] The deformation capability of the transition component is crucial to its effectiveness. A preferred embodiment of this application, such as... Figure 1 and Figure 2 As shown, the transition component adopts a hollow structure.

[0032] It should be understood that using a hollow structure for the transition component enhances its deformability. A solid structure, on the other hand, relies solely on the material's inherent deformability. With a hollow structure, the transition component acts as a buffer under the pressure of the photovoltaic cell 3 and the collector 4. The hollow area gradually compresses without interference, thus preventing damage to the photovoltaic cell 3 and the collector 4 due to thermal expansion. The hollow structure can take various shapes, but a shape that allows for good fit between the photovoltaic cell 3 and the collector 4 on the upper and lower sides of the transition component is preferred, such as a parallelogram or trapezoid.

[0033] Regarding the selection of the hollow structure shape of the transition component, a preferred embodiment of this application is as follows: Figure 1 and Figure 2 As shown, the first transition component 1 includes a first upper plate 110, a first lower plate 120, and two side plates 130; the first upper plate 110 and the first lower plate 120 are flat plates and are arranged parallel to each other at intervals; the first upper plate 110 cooperates with the photovoltaic cell 3, and the first lower plate 120 cooperates with the solar collector 4; the two ends of the first upper plate 110 and the first lower plate 120 are connected by the two side plates 130, and multiple inclined heat-conducting ribs 140 are arranged between the first upper plate 110 and the first lower plate 120.

[0034] It should be understood that the first upper plate 110 and the first lower plate 120 are arranged in parallel. The first upper plate 110 is in close contact with the photovoltaic cell 3, and the first lower plate 120 is in close contact with the collector 4. The first upper plate 110 expands laterally with the photovoltaic cell 3 and also expands longitudinally downwards. Similarly, the first lower plate 120 expands laterally with the collector 4 and also expands upwards. Since the photovoltaic cell 3 and the collector 4 have different coefficients of thermal expansion, a certain deformation difference will occur between them. Therefore, a certain longitudinal deformation is achieved through the cooperation of the side plate 130 with the first upper plate 110 and the first lower plate 120, while compressing the hollow area to achieve longitudinal deformation.

[0035] It is understandable that the side plate 130 should be designed to coordinate with the deformation of the first upper plate 110 and the first lower plate 120. For example, when the first upper plate 110 and the first lower plate 120 undergo lateral deformation of different lengths, the upper and lower ends of the side plate 130 will be misaligned to a certain extent. In this case, the side plate 130 needs to undergo a certain rotational deformation at the connection with the first upper plate 110 and the first lower plate 120; or, the deformation inside the side plate 130 can be used to accommodate this deformation difference.

[0036] It is also understandable that, due to the large distance between the first upper plate 110 and the first lower plate 120, with an air layer in between, if heat transfer is only carried out through the side plate 130, the heat transfer area will be very poor, making it impossible to cool the photovoltaic cell 3 in time or to allow more heat to be absorbed by the collector 4. Therefore, multiple inclined heat-conducting ribs 140 are provided between the first upper plate 110 and the first lower plate 120 to effectively increase the heat transfer area and heat transfer efficiency, ensure a good working temperature for the photovoltaic cell 3 and increase the heat collection efficiency of the collector 4. The inclined heat-conducting ribs 140 should be able to reliably deform simultaneously with the first upper plate 110, the first lower plate 120 and the side plate 130, and can achieve the purpose of deformation through extension or rotation.

[0037] A preferred embodiment of this application, such as Figure 1 As shown, the two side plates 130 are parallel flat plates, and the side plates 130 are inclined so that the first transition component 1 has a parallelogram structure, and the inclined heat-conducting ribs 140 are arranged parallel to the side plates 130.

[0038] It should be understood that by using parallel flat plates as side plates 130, when the first upper plate 110 and the first lower plate 120 undergo longitudinal deformation, the parallelogram structure of the first upper plate 110, the first lower plate 120 and the two side plates 130 can rotate at the connection point of the first upper plate 110, the first lower plate 120 and the two side plates 130, so that the longitudinal deformation of the first upper plate 110 and the first lower plate 120 can be counteracted by the inclination of the side plates 130.

[0039] It should also be understood that by using parallel flat plates as side plates 130, when the first upper plate 110 and the first lower plate 120 generate a difference in lateral deformation, the lateral deformation difference generated by the first upper plate 110 and the first lower plate 120 is offset by the parallelogram structure of the first upper plate 110, the first lower plate 120 and the two side plates 130 rotating at the connection of the first upper plate 110, the first lower plate 120 and the two side plates 130, and the symmetrical tilt of the side plates 130.

[0040] It is understandable that, since the side plate 130 will rotate and tilt, the overall hollow structure will undergo parallelogram deformation. Therefore, the inclined heat-conducting rib 140 is set between the first upper plate 110 and the first lower plate 120. It must also meet the requirements of the parallelogram deformation of the overall hollow structure. Therefore, the inclined heat-conducting rib 140 is set parallel to the side plate 130. When the side plate 130 tilts, the inclined heat-conducting rib 140 can follow the side plate 130 to tilt and deform at the same angle, so as not to hinder the tilting deformation of the side plate 130. Moreover, the inclined heat-conducting rib 140 can always maintain a good contact effect for heat transfer.

[0041] A preferred embodiment of this application, such as Figure 2 As shown, the two side plates 130 adopt V-shaped angled plates, and the inclined heat-conducting ribs 140 are divided into two groups that are close to the two side plates 130 respectively. The structure of a single group of inclined heat-conducting ribs 140 is the same as the structure of the corresponding side plate 130.

[0042] It should be understood that by using a V-shaped angled plate as the side plate 130, the longitudinal deformation of the photovoltaic cell 3 relative to the collector 4 is offset by the deformation of the first upper plate 110, the first lower plate 120, and the side connection, as well as the deformation at the V-shaped angle. The deformation effect of the V-shaped angled plate mainly relies on the deformation capacity at the V-shaped angle, relative to... Figure 1 The method shown uses a V-shaped angle plate, which keeps the horizontal position of the center of the photovoltaic cell 3 and the collector 4 unchanged, making the overall structure more reliable and less likely to cause the photovoltaic cell 3 and the collector 4 to move to one side eccentrically.

[0043] It is understandable that, since a V-shaped angled plate is used as the side plate 130, during the combined process of lateral and longitudinal deformation, if the inclined heat-conducting rib 140 is a straight line connecting the first upper plate 110 and the first lower plate 120, its deformation will differ from that of the side plate 130, and they cannot be coordinated. Therefore, since the inclined heat-conducting rib 140 has the same shape and structure as the side plate 130, it also adopts a V-shaped angled form. Furthermore, since both ends between the first upper plate 110 and the first lower plate 120 expand outwards during longitudinal deformation, it is a symmetrical deformation process. Therefore, in this embodiment, the inclined heat-conducting rib 140 is divided into two groups close to the two side plates 130, and the structure of a single group of inclined heat-conducting ribs 140 is the same as the structure of the corresponding side plate 130. That is, as shown... Figure 2 As shown, the inclined heat-conducting ribs 140 of the left group undergo V-shaped deformation in the same direction as the left side plate 130, while the inclined heat-conducting ribs 140 of the right group undergo V-shaped deformation in the same direction as the right side plate 130.

[0044] The above two methods are suitable for situations where the distance between the photovoltaic cell 3 and the collector 4 is large. If the distance between the photovoltaic cell 3 and the collector 4 is small, they cannot be used, and deformation cannot be effectively offset by the side plate 130. A preferred embodiment of this application is as follows... Figure 3 and Figure 4 As shown, the second transition component 2 includes a second upper plate 210 and a second lower plate 220 that are attached to each other. The second upper plate 210 is fitted with the photovoltaic cell 3, and the second lower plate 220 is fitted with the solar collector 4. A deformable section 201 is provided on the second upper plate 210 and / or the second lower plate 220.

[0045] It should be noted that the second upper plate 210 and the second lower plate 220 are directly attached, which greatly increases the heat transfer area. There is no thick air layer between the second upper plate 210 and the second lower plate 220, significantly reducing thermal resistance and ensuring the operating temperature of the photovoltaic cell 3 and the heat collection efficiency of the collector 4. Furthermore, unlike... Figure 1 and Figure 2 The first transition component 1 shown does not have a side plate 130, so it cannot offset the shape difference between the photovoltaic cell 3 and the collector 4 through the cooperation of the side plate 130. Therefore, a deformation section 201 is provided on the second upper plate 210 or / and the second lower plate 220. The deformation offset effect is achieved through the local deformation of the deformation section 201.

[0046] It is understandable that the shape of the deformable section 201 should satisfy both longitudinal and lateral deformation, and can be set in shapes such as trapezoidal, arched, or semi-circular. The deformable section 201 can be set alone on the second upper plate 210, or it can be set alone on the second lower plate 220, or it can be set on both the second upper plate 210 and the second lower plate 220. The setting of the deformable section 201 can be determined according to the actual surface shape of the photovoltaic cell 3 and the collector 4 and the overall spatial structure.

[0047] It should also be known that, such as Figure 4 As shown, the deformation capacity is strongest when both the second upper plate 210 and the second lower plate 220 have deformable sections 201. In this case, the deformable sections 201 should protrude from the second upper plate 210 and the second lower plate 220. Therefore, a thermally conductive interface layer 5 should be provided between the second upper plate 210 and the photovoltaic cell 3 to increase the heat transfer area, and a thermally conductive interface layer 5 should also be provided between the second lower plate 220 and the collector 4. If the thermally conductive interface layer 5 is not used, the photovoltaic cell 3 cannot fit well against the second upper plate 210, and the collector 4 cannot fit well against the second lower plate 220, thus significantly reducing the heat transfer area. Figure 3 As shown, if the deformation section 201 is only set on the second upper plate 210, a thermal interface layer 5 can be set between the second upper plate 210 and the photovoltaic cell 3, while the second lower plate 220 and the collector 4 can be directly contacted and bonded because they are both flat.

[0048] The cross-sectional shape of the deformable segment 201 affects the overall deformation capacity. A preferred embodiment of this application, such as... Figure 3 and Figure 4 As shown, the cross-sectional shape of the deformable segment 201 is trapezoidal, and there are multiple deformable segments 201 on a single plate segment.

[0049] It should be noted that the cross-sectional shape of the deformable section 201 is trapezoidal, consisting of two inclined sections 202 and a connecting section 203. The inclined sections 202 are at a certain angle to the second upper plate 210 or the second lower plate 220, tilting outwards, while the connecting section 203 connects the two inclined sections 202. The two inclined sections 202 have the same tilt angle and are symmetrically arranged to ensure that the deformation capacity in both the left and right directions is the same. The connecting section 203 is parallel to the upper and lower plates, ensuring good contact and stable longitudinal stress performance.

[0050] It is understandable that the angle between the inclined section 202 and the second upper plate 210 or the second lower plate 220 is preferably 30°-60°. If the angle is too small, the effective deformation capacity will be poor; if the angle is too large, it will be difficult to convert the longitudinal force generated by the longitudinal deformation into the horizontal component force, which will easily lead to deformation failure and structural damage.

[0051] It is also understandable that setting multiple deformable segments 201 on a single plate segment can significantly improve the overall deformation capacity of the plate segment. Since the angle control of the inclined segment 202 limits the capacity of a single deformable segment 201, increasing the number of deformable segments 201 can enhance the deformation capacity. Furthermore, a uniform and symmetrical arrangement on the plate segment can balance the deformation capacity on both sides. Preferably, the length of the deformable segment 201 is 5%-10% of the length of a single plate segment. If the deformable segments 201 are set too many and too densely, the different deformation effects produced by different deformable segments 201 during long-term operation can lead to a more complex overall stress distribution, resulting in a decrease in deformation capacity. Moreover, since the deformation of the photovoltaic cell 3 and the collector 4 under thermal expansion is relatively small, using an appropriate number of deformable segments 201 is sufficient to meet the deformation requirements.

[0052] The choice of material for the transition component affects its ability to counteract deformation. A preferred embodiment of this application is as follows: Figure 1-4 As shown, the transition components are made of elastic thin plates or deformation memory alloys.

[0053] It should be noted that since the transition component needs to undergo a certain degree of deformation, the transition component can be made of elastic thin plate. After the photovoltaic cell 3 and the collector 4 cool down and recover, the transition component can also return to its original shape by its own elasticity without producing additional plastic deformation.

[0054] It is understandable that the transition component can also use shape memory alloy. During the heating process, the shape memory alloy can spontaneously generate a certain deformation, thereby reducing the stress at the connection between the transition component and the photovoltaic cell 3 and the collector 4, and improving the buffering effect, which can further reduce the thermal stress caused by the heating.

[0055] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency thermal coupling structure between a photovoltaic cell and a solar collector, characterized in that: The device includes a transition component disposed between the photovoltaic cell and the collector for heat transfer; the transition component is adapted to offset deformation based on the temperature deformation difference between the photovoltaic cell and the collector.

2. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 1, characterized in that: One side of the transition component is coupled to one of the components of the photovoltaic cell or the collector, and the other side of the transition component is coupled to the remaining components through a thermally conductive interface layer.

3. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 1, characterized in that: The two sides of the transition component are respectively connected to the photovoltaic cell and the collector through a thermally conductive interface layer.

4. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in any one of claims 1-3, characterized in that: The transition component has a hollow structure.

5. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 4, characterized in that: The transition component includes a first upper plate, a first lower plate, and two side plates; the first upper plate and the first lower plate are flat plates and are arranged parallel to each other at intervals; the first upper plate cooperates with the photovoltaic cell, and the first lower plate cooperates with the solar collector; the two ends of the first upper plate and the first lower plate are connected by the two side plates, and multiple inclined heat-conducting ribs are arranged between the first upper plate and the first lower plate.

6. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 5, characterized in that: The two side plates are parallel flat plates, and the side plates are inclined so that the transition component has a parallelogram structure, and the inclined heat-conducting ribs are arranged parallel to the side plates.

7. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 5, characterized in that: The two side plates are V-shaped angled plates, and the inclined heat-conducting ribs are divided into two groups that are close to the two side plates respectively. The structure of the inclined heat-conducting ribs in a single group is the same as the structure of the side plate on the corresponding side.

8. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 4, characterized in that: The transition component includes a second upper plate and a second lower plate that are attached to each other. The second upper plate is used in conjunction with a photovoltaic cell, and the second lower plate is used in conjunction with a solar collector. A deformable section is provided on the second upper plate and / or the second lower plate.

9. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 8, characterized in that: The cross-sectional shape of the deformable segment is trapezoidal, and there are multiple deformable segments provided on a single plate segment.

10. The high-efficiency thermal coupling structure between the photovoltaic cell and the collector as described in claim 1, characterized in that: The transition component is made of elastic thin plate or deformation memory alloy.

Images