Photovoltaic component

Abstract

The embodiment of the invention provides a photovoltaic component. The photovoltaic component comprises a color steel tile; the photovoltaic module comprises a laminated piece and a frame, and the frame is fixed on the backlight surface of the laminated piece; the clamp comprises a first clamping part and a second clamping part which are used for jointly clamping the color steel tile, the first clamping part is provided with a first mounting part, and the second clamping part is provided with a second mounting part; the fixing piece is in lap joint with the first mounting part, and the fixing piece is connected with the frame and the clamp so as to mount the photovoltaic module on the color steel tile; the clamp further comprises a first fastening piece and a second fastening piece which are arranged in a spaced mode in the first direction, the first fastening piece is sequentially connected with the first installation part and the fixing piece in the height direction of the clamp, and the second fastening piece is sequentially connected with the second installation part, the first installation part and the fixing piece in the height direction of the clamp. According to the embodiment of the invention, the installation structure of the clamp is simplified, and the assembly efficiency of the photovoltaic component is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic component. Background Art

[0002] Photovoltaic components are an important part of rooftop power stations, which are used to convert received solar energy into electrical energy to meet daily production and use needs. Photovoltaic components include color steel tiles connected to the roof, clamps installed on the color steel tiles, and photovoltaic modules connected to the clamps. The existing clamp structure is also inconvenient to install, resulting in low installation efficiency of photovoltaic components. Summary of the invention

[0003] In view of this, the present application provides a photovoltaic component to help solve the problem of low installation efficiency of photovoltaic components in the prior art.

[0004] The embodiment of the present application provides a photovoltaic component, including: a color steel tile; a photovoltaic module, including a laminate and a frame, the frame being fixed to the backlight surface of the laminate; a clamp, including a first clamping part and a second clamping part for jointly clamping the color steel tile, the first clamping part being provided with a first mounting part, and the second clamping part being provided with a second mounting part; a fixing member overlapping the first mounting part, the fixing member being respectively connected to the frame and the clamp to install the photovoltaic module on the color steel tile; wherein the clamp also includes a first fastener and a second fastener spaced apart along a first direction, the first fastener sequentially connecting the first mounting part and the fixing member along a height direction of the clamp, and the second fastener sequentially connecting the second mounting part, the first mounting part and the fixing member along the height direction of the clamp.

[0005] In a possible implementation, the first mounting portion is provided with a first waist-shaped hole extending along the first direction, the second mounting portion is provided with a second waist-shaped hole extending along the first direction, and the fixing member is provided with a third waist-shaped hole extending along the first direction; the second fastener passes through the first waist-shaped hole, the second waist-shaped hole and the third waist-shaped hole in sequence along the height direction of the clamp, and the second fastener can slide and cooperate with the first waist-shaped hole, the second waist-shaped hole and the third waist-shaped hole respectively.

[0006] In a possible implementation, the first clamping portion is further provided with a first limiting section fixedly connected to the first mounting portion; the first limiting section is used to abut and cooperate with the second mounting portion along the first direction.

[0007] In a possible implementation, the first limiting section includes a vertical portion and a bent portion. Along the height direction of the clamp, the bent portion is located at one end of the vertical portion away from the first mounting portion, and the bent portion, the vertical portion and the first mounting portion form a limiting groove; the second mounting portion is provided with a protruding end, and at least a portion of the protruding end is accommodated in the limiting groove.

[0008] In a possible implementation, the first clamping portion is further provided with a first clamping arm and a second limiting section fixedly connected to the first mounting portion; the first clamping arm cooperates with the second limiting section to limit the first fastener from moving along the first direction.

[0009] In a possible implementation, the second clamping portion is further provided with a second clamping arm fixedly connected to the second mounting portion; along the first direction, a clamping space is formed between the first clamping arm and the second clamping arm, and at least a portion of the color steel tile is accommodated in the clamping space.

[0010] In a possible implementation, a first corrugated structure is disposed on a side surface of the first clamping arm facing the clamping space; and / or a second corrugated structure is disposed on a side surface of the second clamping arm facing the clamping space.

[0011] In a possible implementation, the second clamping portion is further provided with a supporting portion fixedly connected to the second clamping arm; along the first direction toward a direction away from the second clamping arm, the supporting portion gradually moves away from the second mounting portion.

[0012] In a possible implementation, the fixing member includes a fixing portion, and the fixing portion is fixedly connected to the clamp by the first fastener and the second fastener; the first connecting portion and the second connecting portion are respectively provided at both ends of the fixing portion along the second direction; one of the two adjacent photovoltaic components along the second direction is connected to the first connecting portion, and the other is connected to the second connecting portion; the second direction is perpendicular to the first direction.

[0013] In a possible implementation, the photovoltaic component also includes a first pressing block and a second pressing block spaced apart along the first direction; the first pressing block is fixedly connected to the fixing member via the first fastener, and the second pressing block is fixedly connected to the fixing member via the second fastener; of the two photovoltaic components adjacent to each other along the second direction, the frame of one is limitedly matched with the first pressing block along the second direction, and the frame of the other is limitedly matched with the second pressing block along the second direction.

[0014] In the present application, the clamp is fixed to the color steel tile, and the fixings are connected to the photovoltaic assembly and the clamp respectively, so that the photovoltaic assembly is installed on the color steel tile, so as to utilize solar energy to generate electricity to meet daily use needs. The first clamping part and the fastener can be connected together in advance by the first fastener, and then the second clamping part is assembled with the first clamping part and the fixing part by the second fastener at the installation site, which simplifies the installation structure of the clamp and is conducive to improving the assembly efficiency of the photovoltaic component. Then, after the photovoltaic assembly is connected to the fixing part, the first fastener and the second fastener are locked respectively, so that the connection between the photovoltaic assembly and the clamp can be completed. Moreover, when the second fastener is locked, the relative position relationship between the first clamping part and the second clamping part is fixed, which can ensure that the first clamping part and the second clamping part stably clamp the lock edge, thereby facilitating the installation stability of the clamp.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the cross-sectional structure of the photovoltaic component provided in the present application in the first embodiment; Figure 2 for Figure 1 A schematic diagram of the structure of the photovoltaic component in another viewing angle; Figure 3 for Figure 1 A schematic structural diagram of the first clamping portion in FIG. Figure 4 for Figure 1 A schematic structural diagram of the second clamping portion; Figure 5 for Figure 1 A top view of a fixing member in FIG. Figure 6 for Figure 2 Schematic diagram of the structure of the photovoltaic module; Figure 7 for Figure 2 A schematic diagram of the structure of the fixing parts; Figure 8 for Figure 2 A schematic structural diagram of a photovoltaic component in another embodiment; Fig. 9 for Figure 8A schematic diagram of the structure of the fixing parts; Fig.10 for Figure 8 A schematic diagram of the structure of the photovoltaic component in another viewing angle; Fig.11 for Figure 8 A schematic diagram of the structure of the photovoltaic component in another viewing angle; Fig.12 for Figure 6 Schematic diagram of the structure of the laminate.

[0018] Reference numerals: 10-Clamp; 20-color steel tile; 201-lock edge; 30- Photovoltaic modules; 30A-light-facing surface; 30B-backlit surface; 301-Laminate; 301A-battery layer; 301Aa-battery cell; 301Ab-welding strip; 301B-front plate; 301C-back plate; 301D-film layer; 301Da-first adhesive film layer; 301Db-second adhesive film layer; 302-border; 302A-First side; 302B-second side; 302C-third side; 302D-Cavity; 303-structural adhesive; 40-fixing parts; 40A-first sub-fixing member; 40B-second sub-fixing member; 401-fixed part; 401A-first sub-fixing portion; 401B- second sub-fixing portion; 4011-third waist-shaped hole; 402-first connection portion; 403- second connection portion; 404-first limiting protrusion; 405- second limiting protrusion; 406-second accommodation space; 50-first pressing block; 501- fourth waist-shaped hole; 60- second pressing block; 601-fifth waist hole; 70-Stand; 1- first clamping part; 11- first mounting portion; 110 - first accommodation space; 111- first waist-shaped hole; 12- first clamping arm; 120-clamping space; 121- first corrugated structure; 13- first limit section; 131- vertical part; 132-bending portion; 133-limiting groove; 14- second limiting section; 15- extension section; 2- second clamping portion; 21- second mounting portion; 211- raised end; 212-second waist-shaped hole; 22- second clamping arm; 221- second corrugated structure; 23-supporting part; 3- first fastener; 4- Second fastener. DETAILED DESCRIPTION

[0019] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0020] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0022] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] The present application embodiment provides a photovoltaic component, such as Figure 1 and Figure 2 As shown, the photovoltaic component includes a clamp 10, a color steel tile 20, a photovoltaic module 30 and a fixing 40. A plurality of color steel tiles 20 are installed on the ground or the main body of the building through a bracket 70. The clamp 10 is fixed to the color steel tile 20. The fixing 40 is connected to the photovoltaic module 30 and the clamp 10 respectively, so as to install the photovoltaic module 30 on the color steel tile 20, so as to use solar energy to generate electricity to meet daily use needs. Among them, the main body of the building includes but is not limited to the roof and wall of a factory building, a warehouse and other buildings of a production enterprise. This embodiment is described by taking the roof as the main body of the building as an example.

[0024] The connection structure between the clamp 10 and the color steel tile 20 is first described in detail below: like Figure 1 As shown, along the first direction X, two adjacent color steel tiles 20 overlap each other and are bent to form a locking edge 201. The clamp 10 includes a first clamping portion 1 and a second clamping portion 2, and the first clamping portion 1 and the second clamping portion 2 are used to clamp the locking edge 201 of the color steel tile 20 together so that the clamp 10 can be fixed to the color steel tile 20. Figure 3 and Figure 4 As shown, the first clamping part 1 is provided with a first clamping arm 12, and the second clamping part 2 is provided with a second clamping arm 22. A clamping space 120 is formed between the first clamping arm 12 and the second clamping arm 22 along the first direction X, and at least part of the locking edge 201 is accommodated in the clamping space 120. The first clamping arm 12 and the second clamping arm 22 both extend along the height direction Z of the clamp 10, and the first clamping arm 12 and the second clamping arm 22 jointly clamp the locking edge 201 along the first direction X to improve the connection stability between the clamp 10 and the locking edge 201.

[0025] In a specific embodiment, Figure 3 and Figure 4 As shown, a first corrugated structure 121 is provided on one side surface of the first clamping arm 12 facing the clamping space 120, and / or a second corrugated structure 221 is provided on one side surface of the second clamping arm 22 facing the clamping space 120. The first corrugated structure 121 can increase the friction between the locking edge 201 and the first clamping arm 12, which is beneficial to improving the installation stability of the clamp 10; similarly, the second corrugated structure 221 can increase the friction between the locking edge 201 and the second clamping arm 22, which is beneficial to improving the installation stability of the clamp 10. When the first corrugated structure 121 and the second corrugated structure 221 are provided at the same time, the risk of the clamp 10 moving relative to the locking edge 201 can be further reduced, thereby improving the connection reliability between the clamp 10 and the locking edge 201.

[0026] In a specific embodiment, Figure 1and Figure 3 As shown, along the height direction Z of the clamp 10, an extension section 15 is provided at the bottom end of the first clamp arm 12, and the extension section 15 extends along the first direction X toward the direction close to the second clamp arm 22. On the one hand, by providing the extension section 15, the distance between the bottom end of the first clamp arm 12 and the bottom end of the second clamp arm 22 can be reduced, which is conducive to improving the clamping of the clamp 10 on the locking edge 201; on the other hand, the extension section 15 can overlap the surface of the color steel tile 20, which is conducive to improving the structural stability of the first clamping part 1 and reducing the risk of the first clamping part 1 tilting, thereby facilitating the installation stability of the clamp 10.

[0027] Furthermore, a hook structure is provided at one end of the extension section 15 facing the second clamp arm 22 , and the hook structure can press at least a portion of the locking edge 201 onto the second clamp arm 22 , thereby improving the clamping effect of the clamp 10 on the locking edge 201 .

[0028] In a specific embodiment, Figure 1 and Figure 4 As shown, the second clamping portion 2 is further provided with a support portion 23 fixedly connected to the second clamping arm 22, and the support portion 23 extends obliquely in a direction away from the second clamping arm 22 along the first direction X, and gradually approaches the color steel tile 20. When the clamp 10 clamps the locking edge 201, the end of the support portion 23 away from the second clamping arm 22 can overlap the surface of the color steel tile 20, which is beneficial to improve the structural stability of the second clamping portion 2, reduce the risk of the second clamping portion 2 tilting, and thus help improve the installation stability of the clamp 10.

[0029] In a specific embodiment, Figure 3 and Figure 4 As shown, the first clamping part 1 is also provided with a first mounting part 11 and a first limiting section 13. The first mounting part 11 extends along the first direction X and is used to provide support for the fixing member 40. The first limiting section 13 is fixedly connected to the end of the first mounting part 11. Along the first direction X, a first accommodating space 110 is formed between the first clamping arm 12 and the first limiting section 13. The second clamping part 2 is also provided with a second mounting part 21. The second mounting part 21 is installed in the first accommodating space 110, that is, the first clamping part 1 can wrap the second clamping part 2. The first clamping part 1 and the second clamping part 2 can form a limiting fit along the height direction Z of the clamp 10, reducing the risk of relative movement between the first clamping part 1 and the second clamping part 2 along the height direction Z of the clamp 10, thereby facilitating the improvement of the installation stability of the clamp 10.

[0030] When the first clamping part 1 is connected to the second clamping part 2, the first limiting section 13 is used to abut and cooperate with the second mounting part 21 along the first direction X to limit the movement of the second mounting part 21 along the first direction X, thereby avoiding the relative movement of the first clamping part 1 and the second clamping part 2 in the first direction X, so as to improve the connection stability and reliability between the first clamping part 1 and the second clamping part 2, thereby facilitating the clamping effect of the clamp 10 on the color steel tile 20. On the other hand, when installing the clamp 10, the first clamping part 1 and the second clamping part 2 can be pre-positioned by the limiting effect of the first clamping arm 12 and the first limiting section 13 on the second mounting part 21 to ensure the relative position relationship between the first clamping part 1 and the second clamping part 2, which is conducive to improving the assembly efficiency of the clamp 10.

[0031] like Figure 3 and Figure 4 As shown, the first limiting section 13 includes a vertical portion 131 and a bent portion 132, the vertical portion 131 extends along the height direction Z of the clamp 10, the bent portion 132 is located at one end of the vertical portion 131 away from the first mounting portion 11, and the bent portion 132, the vertical portion 131 and the first mounting portion 11 form a limiting groove 133. The second mounting portion 21 is provided with a protruding end 211, at least part of which is accommodated in the limiting groove 133, and the limiting groove 133 limits the protruding end 211 in the height direction Z of the clamp 10, thereby preventing the first clamping portion 1 and the second clamping portion 2 from moving relative to each other along the height direction Z of the clamp 10, so as to further improve the connection stability and reliability between the first clamping portion 1 and the second clamping portion 2. Specifically, the protruding end 211 can be a curved surface structure, and accordingly, the limiting groove 133 can also be set to a curved surface structure. This makes it more convenient to install and match the first clamping part 1 and the second clamping part 2, and is not easy to cause wear, which is beneficial to improving the service life of the first clamping part 1 and the second clamping part 2.

[0032] In addition, the first limiting section 13 is disposed at the end of the first mounting portion 11, which is beneficial to improving the structural strength of the end of the first mounting portion 11, reducing the risk of bending or damage of the end of the first mounting portion 11, and is beneficial to improving the service life of the first clamping portion 1. In this embodiment, the bending portion 132 is disposed to form the limiting groove 133 together with the vertical portion 131 and the first mounting portion 11, rather than directly opening a groove on the vertical portion 131 to form the limiting groove 133, so as to avoid affecting the structural strength of the vertical portion 131, which is also beneficial to improving the service life of the first clamping portion 1.

[0033] In a specific embodiment, Figure 1As shown, the clamp 10 also includes a first fastener 3 and a second fastener 4 spaced apart along a first direction X, the first fastener 3 sequentially connects the first mounting portion 11 and the fixing member 40 along a height direction Z of the clamp 10, and the second fastener 4 sequentially connects the second mounting portion 21, the first mounting portion 11 and the fixing member 40 along a height direction Z of the clamp 10. The first fastener 3 and the second fastener 4 can specifically be bolts. In this embodiment, the first clamping portion 1 and the fastener 40 can be connected together in advance by the first fastener 3, and then the second clamping portion 2 is assembled with the first clamping portion 1 and the fixing member 40 by the second fastener 4 at the installation site, which simplifies the installation structure of the clamp 10 and is conducive to improving the assembly efficiency of photovoltaic components. Then, after the photovoltaic component 30 is connected to the fixing member 40, the first fastener 3 and the second fastener 4 are respectively locked to complete the connection between the photovoltaic component 30 and the clamp 10. Moreover, when the second fastener 4 is locked, the relative position relationship between the first clamping part 1 and the second clamping part 2 is fixed, which can ensure that the first clamping part 1 and the second clamping part 2 stably clamp the locking edge 201, thereby helping to improve the installation stability of the clamp 10.

[0034] Furthermore, if Figure 3 , Figure 4 and Figure 5 As shown, the first mounting portion 11 is provided with a first waist-shaped hole 111 extending along the first direction X, the second mounting portion 21 is provided with a second waist-shaped hole 212 extending along the first direction X, and the fixing member 40 is provided with a third waist-shaped hole 4011 extending along the first direction X. The second fastener 4 passes through the first waist-shaped hole 111, the second waist-shaped hole 212 and the third waist-shaped hole 4011 in sequence along the height direction Z of the clamp 10. When the above structure is adopted, the first clamping portion 1 and the fastener 40 can be connected together in advance by the first fastener 3, and the second clamping portion 2 can be connected with the first clamping portion 1 and the fastener 40 in advance by the second fastener 4. During on-site installation, the second clamping portion 2 can be rotated relative to the first clamping portion 1 so that there is a space between the extension section 15 and the second clamp arm 22 that can accommodate the lock edge 201, so that the clamp 10 is clamped on the lock edge 201. The second fastener 4 can slide and cooperate with the first waist-shaped hole 111, the second waist-shaped hole 212 and the third waist-shaped hole 4011 respectively to ensure that the second clamping part 2 can rotate relative to the first clamping part 1, thereby ensuring that the clamp 10 can be smoothly clamped on the locking edge 201. After the photovoltaic component 30 is connected to the fixing member 40, the first fastener 3 and the second fastener 4 are respectively locked to complete the connection between the photovoltaic component 30 and the clamp 10. Moreover, when the second fastener 4 is locked, the relative position relationship between the first clamping part 1 and the second clamping part 2 is fixed, which can ensure that the first clamping part 1 and the second clamping part 2 stably clamp the locking edge 201, thereby facilitating the installation stability of the clamp 10.

[0035] In a specific embodiment, Figure 1 and Figure 3 As shown, the first clamping portion 1 is also provided with a second limiting section 14 fixedly connected to the first mounting portion 11, and the first clamping arm 12 cooperates with the second limiting section 14 to limit the movement of the first fastener 3 along the first direction X, which is beneficial to improving the installation stability of the first fastener 3. Moreover, when the second limiting section 14 is provided, the first clamping portion 1 can wrap at least part of the first fastener 3, which facilitates the pre-positioning between the first fastener 3 and the first clamping portion 1, which is beneficial to improving the installation efficiency of the clamp 10. In addition, the second limiting section 14 can be specifically fixedly connected to the end of the first mounting portion 11, Next, the connection structure between the fixing member 40 and the photovoltaic module 30 and the clamp 10 is described in detail: Combination Figure 2 and Figure 6 As shown, the photovoltaic assembly 30 includes a laminate 301 and a frame 302. The photovoltaic assembly 30 includes a light-facing surface 30A and a backlight surface 30B that are relatively distributed along the thickness direction Z thereof. The light-facing surface 30A faces the light source and is used to receive direct sunlight. The backlight surface 30B faces away from the light source. The frame 302 is fixedly connected to the backlight surface 30B. The frame 302 can support the laminate 301, reducing the risk of the laminate 301 being damaged by external forces during transportation, installation, and use, thereby extending the service life of the laminate 301 and improving the overall rigidity and working stability of the photovoltaic assembly 30. Moreover, when the frame 302 is installed on the backlight surface 30B, it will not block the light-facing surface 30A, thereby increasing the effective area on the light-facing surface 30A for absorbing sunlight, thereby improving the absorption efficiency of the photovoltaic assembly 30 for sunlight, which is beneficial to improving the photoelectric conversion efficiency of the photovoltaic assembly 30, and further beneficial to improving the output power of the photovoltaic component. Among them, the frame 302 includes a first side 302A, a second side 302B and a third side 302C, the second side 302B is fixedly connected to the first side 302A and the third side 302C respectively, the first side 302A, the second side 302B and the third side 302C form a cavity 303D, and the first side 302A is bonded and fixed to the backlight surface 30B by structural adhesive 303.

[0036] Among them, combined Fig.12As shown, the laminate 301 includes a battery layer 301A, a front plate 301B, a back plate 301C and a film layer 301D. The battery layer 301A includes a plurality of battery strings connected in series or in parallel, each battery string is formed by a plurality of battery cells 301Aa (including but not limited to monocrystalline silicon battery cells and polycrystalline silicon battery cells) connected in series, and two adjacent battery cells 301Aa are connected by welding strips 301Ab; the front plate 301B is located on the light-facing side of the battery layer 301A, and is used to protect the surface of the battery layer 301A and reduce the risk of damage to the battery cells 301Aa; the back plate 301C is located on the backlight side of the battery layer 301A, and has the function of blocking water vapor and insulating protection; the film layer 301D includes a first film layer 301Da and a second film layer 301 Db, along the thickness direction Z of the laminate 301, the first adhesive film layer 301Da is located between the front panel 301B and the battery layer 301A, and is used to achieve a fixed connection between the front panel 301B and the battery layer 301A, and the second adhesive film layer 301Db is located between the battery layer 301A and the back panel 301C, and is used to achieve a fixed connection between the battery layer 301A and the back panel 301C. The first adhesive film layer 301Da and the second adhesive film layer 301Db can also play a certain supporting and protective role for the battery layer 301A, ensuring that the photovoltaic module has good mechanical strength and reducing the impact of hail impact, wind, mechanical vibration and the like.

[0037] The present embodiment does not limit the structure of the battery cell 301Aa. The types of the battery cell 301Aa include but are not limited to Passivated Emitter Rear Cell (PERC), Tunnel Oxide Passivated Contact (TOPCon), Heterojunction with Intrinsic Thin-film (HJT), Interdigitated Back Contact (IBC), perovskite battery, etc.

[0038] For PERC cells, along the thickness direction, the PERC cell includes a front surface metal silver electrode, a front surface silicon nitride passivation layer, a phosphorus layer emitter, a P-type base silicon layer, a local aluminum back field, a metal aluminum back electrode, a back passivation layer (Al 2 O 3 / SiNx). PERC cells use a passivation film to passivate the back side, replacing the all-aluminum back side field, enhancing the internal back reflection of light in the silicon substrate, reducing the recombination rate on the back side, and increasing the efficiency of the cell by 0.5%-1%.

[0039] For TOPCon cells, along the thickness direction, TOPCon cells include metal silver electrodes, front surface silicon nitride passivation layers, boron-doped emitters, N-type base silicon layers, diffused doping layers, ultra-thin silicon oxide, doped polysilicon, silicon nitride, and metal silver electrodes. The back of the cell is composed of an ultra-thin silicon oxide layer (1nm~2nm) and a phosphorus-doped microcrystalline amorphous mixed Si film, which together form a passivation contact structure. This structure can block the recombination of minority carrier holes and increase the open circuit voltage and short circuit current of the cell. The ultra-thin oxide layer allows majority electrons to tunnel into the polysilicon layer while blocking the recombination of minority carrier holes. The good passivation effect of ultra-thin silicon oxide and heavily doped silicon film causes the energy band on the silicon wafer surface to bend, thereby forming a field passivation effect, greatly increasing the probability of electron tunneling, and reducing the contact resistance, which increases the open circuit voltage and short circuit current of the cell, thereby improving the cell conversion efficiency.

[0040] For HJT cells, along the thickness direction, the HJT cells include a front low-temperature silver electrode, a front conductive film, an N-type amorphous silicon film, an intrinsic amorphous silicon film, an N-type base silicon layer, an intrinsic amorphous silicon film, a P-type amorphous silicon film, a back conductive film, and a back low-temperature silver electrode.

[0041] For IBC cells, along the thickness direction, IBC cells include silicon nitride anti-layer, N+ front surface field, N-type base silicon layer, P+ emitter, N+ back field, aluminum oxide passivation layer, silicon nitride anti-reflection layer, and metal silver electrode. IBC cells use ion implantation technology to obtain P and N regions with good uniformity and precisely controllable junction depth. There is no grid line blocking on the front of the cell, which can eliminate the shading current loss of the metal electrode and achieve the maximum utilization of incident photons. The short-circuit current can be increased by about 7% compared with conventional solar cells; due to the back contact structure, there is no need to consider the grid line blocking problem, and the grid line ratio can be appropriately widened, thereby reducing the series resistance and having a high fill factor; the surface passivation and surface light trapping structure can be optimized to obtain a lower front surface recombination rate and surface reflection.

[0042] For perovskite cells, along the thickness direction, the perovskite cell includes substrate material, conductive film, electron transport layer (titanium dioxide), perovskite absorption layer (hole transport layer), and metal cathode. Perovskite materials have a high light absorption coefficient and a long carrier diffusion distance. After the photons absorbed by the perovskite material are converted into electrons, they are easily collected by the electrode with low loss, so they can generate higher photoelectric voltage and current, making perovskite show higher photoelectric conversion efficiency.

[0043] like Figure 2 and Figure 7As shown, the fixing member 40 includes a fixing portion 401, which is overlapped with the first mounting portion 11 and fixedly connected with the clamp 10 through the first fastener 3 and the second fastener 4, which can reduce parts, simplify the structure of the photovoltaic component, and improve the installation efficiency of the fixing member 40 and the clamp 10. The fixing portion 401 has a first limiting protrusion 404 and a second limiting protrusion 405 arranged at intervals along the second direction Y. When the fixing member 40 is fixedly connected to the clamp 10, the first limiting protrusion 404 and the second limiting protrusion 405 can respectively abut and cooperate with the two ends of the first mounting portion 11 along the second direction Y to prevent the clamp 10 and the fixing member 40 from relative movement along the second direction Y, which is conducive to improving the connection stability between the clamp 10 and the fixing member 40.

[0044] Along the second direction Y, the two ends of the fixing portion 401 are respectively provided with a first connection portion 402 and a second connection portion 403. One of the two photovoltaic components 30 adjacent to each other along the second direction Y is connected to the first connection portion 402, and the other is connected to the second connection portion 403. Both the first connection portion 402 and the second connection portion 403 are curved structures, and the curved structures can extend into the cavity 302D, so that the two photovoltaic components 30 adjacent to each other along the second direction Y can form a movable connection with the fixing member 40 respectively.

[0045] Specifically, when the first connection part 402 is connected to the frame 302, the first side 302A and the third side 302C are mutually limited with the first connection part 402 along the height direction Z of the clamp 10 to limit the movement of the photovoltaic assembly 30 along the height direction Z of the clamp 10; the second side 302B is limited with the first connection part 402 along the second direction Y to limit the movement of the photovoltaic assembly 30 along the second direction Y, which is conducive to improving the installation stability of the photovoltaic assembly 30. The first connection part 402 is also provided with a second accommodating space 406, and at least part of the third side 302C extends into the second accommodating space 406. The photovoltaic assembly 30 will deform under the action of external force (such as wind), for example, the middle part of the photovoltaic assembly 30 will be arched upward relative to the edge part, at this time, the frame 302 will have a tendency to rotate relative to the fixing member 40. If the frame 302 is fixedly connected to the fixing member 40, then the edge part of the photovoltaic assembly 30 is prone to stress concentration, resulting in the fragmentation of the photovoltaic assembly 30, affecting the normal use of the entire photovoltaic component. Therefore, the embodiment of the present application can reduce the possibility of stress concentration and breakage of the photovoltaic assembly 30 at the connection position between the frame 302 and the fixing member 40 when the photovoltaic assembly 30 is subjected to external force by movably connecting the fixing member 40 and the frame 302, thereby helping to improve the reliability of the photovoltaic assembly 30 and extend the service life of the photovoltaic assembly 30.

[0046] The connection structure between the second connection portion 403 and the frame 302 of another photovoltaic module 30 is the same as the connection between the first connection portion 402 and the frame 302 described above, and will not be repeated here.

[0047] It should be noted that the first direction X and the second direction Y are perpendicular to each other, the second direction Y is specifically the length direction of the locking edge 201, and the first direction X is specifically the direction perpendicular to the locking edge 201. In this embodiment, the length direction of the photovoltaic module 30 is parallel to the first direction X, and the width direction of the photovoltaic module 30 is parallel to the second direction Y.

[0048] In this embodiment, the width direction of the photovoltaic component 30 is parallel to the length direction (second direction Y) of the lock edge 201, and the fixing member 40 connects the clamp 10 and the photovoltaic component 30 along the second direction Y. There is no need to make the width of the photovoltaic component 30 consistent with the width of the color steel tile 20, so that the photovoltaic component 30 can be adapted to color steel tiles 20 of different widths. That is, this embodiment does not limit the version structure of the color steel tile 20 and has a high degree of flexibility.

[0049] In this embodiment, Figure 7 As shown, the fixing member 40 may be an integrated structure, that is, the fixing portion 401 , the first connecting portion 402 and the second connecting portion 403 are integrally formed.

[0050] Or, if Figure 8 , Fig. 9 and Fig.10 As shown, the fixing member 40 may also be a split structure, including a first sub-fixing member 40A and a second sub-fixing member 40B stacked along the height direction Z of the clamp 10. The first sub-fixing member 40A is provided with a first sub-fixing portion 401A, and the second sub-fixing member 40B is provided with a second sub-fixing portion 401B. The first sub-fixing portion 401A and the second sub-fixing portion 401B are detachably connected, and the first sub-fixing portion 401A and the second sub-fixing portion 401B are both fixedly connected to the clamp 10 through the first fastener 3 and the second fastener 4. Fig.10 As shown, the first sub-fixing portion 401A and the second sub-fixing portion 401B are both provided with a third waist-shaped hole 4011. The first limiting protrusion 404 is provided on the first sub-fixing portion 401A, and the second limiting protrusion 405 is provided on the second sub-fixing portion 401B; along the second direction Y, the first connecting portion 402 is provided on one end of the first sub-fixing portion 401A away from the second sub-fixing portion 401B, and the second connecting portion 403 is provided on one end of the second sub-fixing portion 401B away from the first sub-fixing portion 401A.

[0051] The integrated fixing component 40 has a small movable space in the second direction Y and is inconvenient to disassemble. Therefore, when the fixing component 40 is set to a split structure, it is more convenient to install and disassemble the fixing component 40, and the installation and disassembly of a single photovoltaic module 30 can be realized.

[0052] In a specific embodiment, Figure 8 and Fig.11 As shown, the photovoltaic component also includes a first pressing block 50 and a second pressing block 60 spaced apart along the first direction X, and the first pressing block 50 and the second pressing block 60 are both arranged above the fixing member 40. The first pressing block 50 is fixedly connected to the fixing member 40 and the clamp 10 through the first fastener 3, and the second pressing block 60 is fixedly connected to the fixing member 40 and the clamp 10 through the second fastener 4. Among them, the first pressing block 50 and the second pressing block 60 can cooperate with the first mounting portion 11 respectively to limit the movement of the fixing member 40 along the height direction Z of the clamp 10, which is beneficial to improve the installation stability of the fixing member 40. Moreover, the first pressing block 50 and the second pressing block 60 extend in the second direction Y in a direction away from each other, so that the first pressing block 50 and the second pressing block 60 can respectively abut and cooperate with the second sides 302B of the two adjacent frames 302 along the second direction Y, so as to simultaneously limit the two adjacent photovoltaic modules 30 along the second direction Y, which is beneficial to further improve the installation stability of the photovoltaic module 30 and reduce the risk of the photovoltaic module 30 being separated from the fixing member 40.

[0053] In this embodiment, the first pressing block 50 and the second pressing block 60 are split structures, which is conducive to the separate installation and disassembly of the photovoltaic components 30 on both sides: first, the photovoltaic component 30 on one side of the clamp 10 is connected to the first connecting part 402, and then the first pressing block 50 is passed through the first fastener 3 and the first fastener 3 is locked. Then, the photovoltaic component 30 on the other side of the clamp 10 is connected to the second connecting part 403, and then the second pressing block 60 is passed through the second fastener 4 and the second fastener 4 is locked.

[0054] Furthermore, a fourth waist-shaped hole 501 extending along the second direction Y may be provided on the first pressing block 50, and a fifth waist-shaped hole 601 extending along the second direction Y may be provided on the second pressing block 60, so that the photovoltaic assembly 30 can be installed and removed without disassembling the first pressing block 50 and the second pressing block 60, which is conducive to further improving the installation efficiency of the photovoltaic components. Specifically, the first pressing block 50, the fixing member 40 and the clamp 10 may be connected together in advance by the first fastener 3, and the second pressing block 60, the fixing member 40 and the clamp 10 may be connected together by the second fastener 4. During on-site installation, first clamp the clamp 10 on the locking edge 201, and then adjust the position of the first pressing block 50 in the second direction Y by slidingly matching the first fastener 3 with the fourth waist-shaped hole 501, and adjust the position of the second pressing block 60 in the second direction Y by slidingly matching the second fastener 4 with the fifth waist-shaped hole 601; after connecting the photovoltaic component 30 on one side to the first connecting part 402, adjust the position of the first pressing block 50 along the second direction Y to ensure that the first pressing block 50 can abut against the frame 302 of the photovoltaic component 30, and then lock the first fastener 3; then connect the photovoltaic component 30 on the other side to the second connecting part 403, adjust the position of the second pressing block 60 along the second direction Y to ensure that the second pressing block 60 can abut against the frame 302 of the photovoltaic component 30, and then lock the second fastener 4. When it is necessary to disassemble the photovoltaic assembly 30 connected to the first connection portion 402, it is only necessary to loosen the first fastener 3 and adjust the position of the first pressing block 50 in the second direction Y without disassembling the first pressing block 50. Similarly, when it is necessary to disassemble the photovoltaic assembly 30 connected to the second connection portion 403, it is only necessary to loosen the second fastener 4 and adjust the position of the second pressing block 60 in the second direction Y without disassembling the second pressing block 60.

[0055] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A photovoltaic component, characterized in that: include: Color steel tiles (20); A photovoltaic module (30) comprises a laminate (301) and a frame (302), wherein the frame (302) is fixed to the backlight surface of the laminate (301); The clamp (10) comprises a first clamping portion (1) and a second clamping portion (2) for jointly clamping the color steel tile (20), the first clamping portion (1) being provided with a first mounting portion (11), and the second clamping portion (2) being provided with a second mounting portion (21); A fixing member (40) overlapped on the first mounting portion (11), the fixing member (40) being connected to the frame (302) and the clamp (10) respectively, so as to mount the photovoltaic module (30) on the color steel tile (20); The clamp (10) further comprises a first fastener (3) and a second fastener (4) which are arranged at intervals along a first direction, the first fastener (3) sequentially connecting the first mounting portion (11) and the fixing member (40) along a height direction of the clamp (10), and the second fastener (4) sequentially connecting the second mounting portion (21), the first mounting portion (11) and the fixing member (40) along a height direction of the clamp (10).

2. The photovoltaic component according to claim 1, characterized in that: The first mounting portion (11) is provided with a first waist-shaped hole (111) extending along the first direction, the second mounting portion (21) is provided with a second waist-shaped hole (212) extending along the first direction, and the fixing member (40) is provided with a third waist-shaped hole (4011) extending along the first direction; The second fastener (4) passes through the first waist-shaped hole (111), the second waist-shaped hole (212) and the third waist-shaped hole (4011) in sequence along the height direction of the clamp (10), and the second fastener (4) can slide and fit with the first waist-shaped hole (111), the second waist-shaped hole (212) and the third waist-shaped hole (4011) respectively.

3. The photovoltaic component according to claim 1, characterized in that: The first clamping portion (1) is further provided with a first limiting section (13) fixedly connected to the first mounting portion (11); The first limiting section (13) is used for abutting and cooperating with the second mounting portion (21) along the first direction.

4. The photovoltaic component according to claim 3, characterized in that: The first limiting section (13) comprises a vertical portion (131) and a bent portion (132); along the height direction of the clamp (10), the bent portion (132) is located at an end of the vertical portion (131) away from the first mounting portion (11); the bent portion (132), the vertical portion (131) and the first mounting portion (11) form a limiting groove (133); The second mounting portion (21) is provided with a protruding end (211), and at least a portion of the protruding end (211) is accommodated in the limiting groove (133).

5. The photovoltaic component according to claim 1, characterized in that: The first clamping portion (1) is further provided with a first clamping arm (12) and a second limiting section (14) fixedly connected to the first mounting portion (11); The first clamping arm (12) cooperates with the second limiting section (14) to limit the movement of the first fastener (3) along the first direction.

6. The photovoltaic component according to claim 5, characterized in that: The second clamping portion (2) is further provided with a second clamping arm (22) fixedly connected to the second mounting portion (21); Along the first direction, a clamping space (120) is formed between the first clamping arm (12) and the second clamping arm (22), and at least a portion of the color steel tile (20) is accommodated in the clamping space (120).

7. The photovoltaic component according to claim 6, characterized in that: A first corrugated structure (121) is provided on a side surface of the first clamping arm (12) facing the clamping space (120); And / or, a second corrugated structure (221) is provided on a side surface of the second clamping arm (22) facing the clamping space (120).

8. The photovoltaic component according to claim 6, characterized in that: The second clamping portion (2) is further provided with a supporting portion (23) fixedly connected to the second clamping arm (22); Along the first direction towards a direction away from the second clamping arm (22), the support portion (23) gradually moves away from the second mounting portion (21).

9. The photovoltaic component according to any one of claims 1 to 8, characterized in that: The fixing member (40) comprises a fixing portion (401), and the fixing portion (401) is fixedly connected to the clamp (10) via the first fastener (3) and the second fastener (4); The fixing portion (401) is provided with a first connecting portion (402) and a second connecting portion (403) at two ends along the second direction respectively; One of the two photovoltaic components (30) adjacent to each other along the second direction is connected to the first connection portion (402), and the other is connected to the second connection portion (403); The second direction is perpendicular to the first direction.

10. The photovoltaic component according to claim 9, characterized in that: The photovoltaic component further comprises a first pressing block (50) and a second pressing block (60) which are spaced apart and distributed along the first direction; The first pressing block (50) is fixedly connected to the fixing member (40) via the first fastening member (3), and the second pressing block (60) is fixedly connected to the fixing member (40) via the second fastening member (4); Of the two photovoltaic assemblies (30) adjacent to each other along the second direction, the frame (302) of one is positionally matched with the first pressing block (50) along the second direction, and the frame (302) of the other is positionally matched with the second pressing block (60) along the second direction.

Images