CN217643272U - Steel frame strip for photovoltaic frame, photovoltaic frame and photovoltaic module - Google Patents

Abstract

The utility model relates to a photovoltaic module technical field discloses a steel frame strip, frame and photovoltaic module for photovoltaic frame. The steel frame strip comprises a first mounting cavity and a second mounting cavity, wherein the first mounting cavity is used for fixing the photovoltaic laminating piece through packaging glue, the second mounting cavity is arranged below the first mounting cavity, and corner connectors are arranged in the second mounting cavity to enable the steel frame strips to be connected and assembled into a photovoltaic frame through the corner connectors; first installation cavity is including bending the first steel wall of connection in proper order, second steel wall and third steel wall, the upper end and the lower extreme of second steel wall connect the left side of first steel wall and third steel wall respectively, so that first installation cavity right side forms the installation accent, form the appearance that supplies the encapsulation to glue to hold between first installation cavity and the photovoltaic lamination spare and glue the chamber, the right-hand member of first steel wall pushes down and forms blank pressing down, so that the upper left portion widen formation of holding gluey chamber receives the gluey groove, first steel wall is equipped with the changeover portion of blank pressing under the smooth connection. This steel frame strip can reduce steel cost, promotes the encapsulation effect of photovoltaic lamination spare to improve long-term open air use's ponding deposition condition.

Description

Steel frame strip for photovoltaic frame, photovoltaic frame and photovoltaic module

Technical Field

The utility model relates to a photovoltaic module technical field, concretely relates to steel frame strip for photovoltaic frame, use photovoltaic frame and photovoltaic module of this steel frame strip.

Background

At present, in order to adapt to the development of large-sized photovoltaic modules, people are gradually developing frames with high mechanical strength, such as frames made of steel, which are called steel frames for short; compared with aluminum materials, the mechanical strength of steel is higher, and therefore the steel frame can adapt to large-size photovoltaic modules.

Wherein, publication No. CN213906609U provides a photovoltaic module frame that steel made, and this frame includes holding tank and mounting groove, and the holding tank is used for installing the photovoltaic lamination spare, and the mode that the third lateral wall accessible sheet metal of holding tank upside bends (generally being called panel beating and bends the dead side of pressing) forms excessive gluey groove in to the holding tank. However, the glue overflow groove formed in this way wastes steel plate materials, and increases the steel cost; moreover, after the metal plate is bent to press the edge, the metal plate positioned in the accommodating tank can also cause a local cliff surface to be formed in the accommodating tank, so that the left and right flows of the local packaging adhesive in the accommodating tank are hindered, the adhesive overflowing process in the adhesive overflowing groove becomes unsmooth, the adhesive overflowing layer in the adhesive overflowing groove is easily caused to be uneven, and the packaging effect is further influenced; in addition, because the panel beating is bent and is pressed the dead limit and still can increase the thickness of the third lateral wall of installation accent one side of holding tank (its thickness is the thickness of double-deck panel beating), thereby the height of the upper surface of increase third lateral wall to photovoltaic lamination spare upper surface, and the side of this section high position is the dead angle limit of easy ponding deposition, consequently, the ponding deposition condition on this dead angle limit of photovoltaic lamination spare still can further be aggravated to the increase of this section height, be unfavorable for photovoltaic module to keep clean for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a steel frame strip for photovoltaic frame, use this steel frame strip's photovoltaic frame and photovoltaic module, this steel frame strip's structural design is more reasonable, can reduce the steel cost, is favorable to promoting the encapsulation effect of photovoltaic lamination spare to can improve the ponding deposition condition of photovoltaic lamination spare.

Based on this, the utility model discloses a steel frame strip for photovoltaic frame, including the first installation cavity that is used for fixing photovoltaic lamination spare through the packaging glue and locate the second installation cavity of first installation cavity below, the second installation cavity supplies the angle sign indicating number installation to assemble into the photovoltaic frame through the angle sign indicating number connection between each steel frame strip; first installation cavity is including bending first steel wall, second steel wall and the third steel wall of connecting in proper order, the left side of first steel wall and third steel wall is connected respectively to the upper end and the lower extreme of second steel wall to make the right side of first installation cavity form the installation accent, form between the photovoltaic lamination spare in the inner wall of first installation cavity and the first installation cavity and supply the appearance gluey chamber that the encapsulation was held, the right-hand member of first steel wall pushes down and forms blank pressing down, so that the upper left portion widen formation of holding gluey chamber receives gluey groove, first steel wall is equipped with the changeover portion of blank pressing under the smooth connection.

Preferably, the height a in the glue collecting groove is smaller than or equal to the thickness D of the first steel wall.

Preferably, the height of the right end face of the lower pressing edge is less than 2 times of the thickness D of the first steel wall, and the height of the right end face of the lower pressing edge is greater than or equal to 0.5 times of the thickness D of the first steel wall.

Preferably, the first steel wall at the top of the glue collecting groove is obliquely arranged.

Preferably, a part of the third steel wall is recessed downwards to form an anti-glue-overflow groove communicated with the glue containing cavity.

Further preferably, the glue overflow preventing groove is located at a position close to the right of the middle of the third steel wall.

Further preferably, the cross section of the glue overflow preventing groove is semicircular or semielliptical.

Preferably, the inner height of the left side of the first mounting cavity is greater than the height of the mounting cavity opening.

Preferably, the left end of the third steel wall inclines upwards from left to right, so that the left lower part of the glue containing cavity forms an inclined slope cavity.

Preferably, the second installation cavity comprises a fourth steel wall and a fifth steel wall which are sequentially bent and connected, a concave-convex part which is bent and connected with the third steel wall and used for clamping the upper end of the corner connector is arranged at the top in the second installation cavity, the upper end and the lower end of the fourth steel wall are respectively bent and connected to one side of the concave-convex part and one side of the fifth steel wall, and a bending part used for clamping the lower end of the corner connector is arranged at the free end of the fifth steel wall.

Further preferably, the width W1 of the first steel wall is less than or equal to the width W2 of the third steel wall, and the ratio of the width W3 of the fifth steel wall to the width W2 of the third steel wall is 1-4:1. preferably, the ratio of 2:1.

further preferably, the fourth steel wall is located at the left side of the concave-convex part and the fifth steel wall, and the bent part extends upwards along the right side of the fifth steel wall; the upper end of the bending part inclines towards the second mounting cavity, or the upper end of the bending part is also provided with an inner edge which transversely extends towards the inner side of the second mounting cavity.

Further preferably, the concave-convex part comprises a sixth steel wall, a seventh steel wall, an eighth steel wall and a ninth steel wall, wherein the left side and the right side of the sixth steel wall are respectively connected with the upper ends of the fourth steel wall and the seventh steel wall in a bending way, the left side and the right side of the eighth steel wall are respectively connected with the lower ends of the seventh steel wall and the ninth steel wall in a bending way, and the upper end of the ninth steel wall is connected with the right side of the third steel wall in a bending way; the left side of the sixth steel wall is in contact with the lower left side of the third steel wall.

The utility model also discloses a photovoltaic frame, including a plurality of frame strips of end to end in proper order and be used for connecting the angle sign indicating number of the tip of two adjacent frame strips, the frame strip does the utility model discloses an it is above-mentioned to contain a steel frame strip for photovoltaic frame, the angle sign indicating number is including the first connecting portion and the second connecting portion of buckling the connection, first connecting portion and second connecting portion are installed respectively in the second installation intracavity of two adjacent steel frame strips.

Preferably, the first connecting portion and the second connecting portion are both provided with a plane steel wall and a vertical steel wall which are connected in a bending mode, the upper end of the vertical steel wall is clamped with the concave-convex portion, and the plane steel wall is clamped in a cavity which is defined by the lower end of the fourth steel wall, the fifth steel wall and the bending portion; and the free end of the plane steel wall and/or the vertical steel wall is/are provided with a sawtooth structure.

The utility model also discloses a photovoltaic module, including the photovoltaic lamination spare, still include the utility model discloses an above-mentioned a photovoltaic frame, this photovoltaic frame sets up the side at the photovoltaic lamination spare for install the photovoltaic lamination spare.

Compared with the prior art, the utility model discloses at least, including following beneficial effect:

in the steel frame strip for the photovoltaic frame, the steel material at the right end part of the first steel wall is not required to be bent into the glue containing cavity to press the dead edge, and the upper left part of the glue containing cavity can be widened relative to the upper right part of the glue containing cavity through the matching of the transition section and the lower pressing edge to form the glue receiving groove, so the lower pressing edge can save the steel material and reduce the steel material cost; compared with the thickness of a double-layer metal plate of the third side wall in the prior art (such as CN 213906609U), the lower pressing edge is only the thickness of one layer of steel, so that the lower pressing edge can also reduce the accumulated water and ash deposition thickness of the photovoltaic laminated part on the right end face of the lower pressing edge; in addition, because first steel wall is equipped with the changeover portion of smooth connection lower blank holder, so the setting up of changeover portion makes the receipts in the glue chamber glue groove and hold and glue the upper right portion in chamber between slope and the level and smooth intercommunication, this encapsulation that overflows in the receipts glue groove that makes the glue chamber is held and is glued can flow into in the upper right portion in glue chamber more smoothly, thereby be favorable to producing even excessive layer of gluing in the upper right portion in glue chamber is held, so as to avoid holding in the upper right portion in glue chamber local lack of glue and lead to excessive thickness uneven of glue layer, and then be favorable to promoting the encapsulation effect of lamination spare.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a steel frame strip for a photovoltaic frame according to this embodiment under the installation of an encapsulant and a photovoltaic laminate.

Fig. 2 is a schematic cross-sectional structural view of another steel frame strip for photovoltaic frames according to this embodiment.

Fig. 3 is an exploded schematic view of a photovoltaic frame according to this embodiment.

Fig. 4 is a partially enlarged view of reference character a in fig. 3.

Fig. 5 is a schematic perspective view of a corner connector in a photovoltaic frame according to this embodiment.

The reference numbers illustrate: frame strips 01; a first mounting cavity 1; a mounting pocket 11; a first steel wall 12; a lower pressing edge 121; a transition section 122; a second steel wall 13; a third steel wall 14; a glue containing cavity 15; a glue collecting groove 151; an anti-overflow glue tank 152; an inclined ramp cavity 153; a second mounting cavity 2; a fourth steel wall 21; a reinforcing rib 211; a fifth steel wall 22; a concave-convex portion 23; a sixth steel wall 231; a seventh steel wall 232; an eighth steel wall 233; a ninth steel wall 234; a bent portion 24; an inner rim 241; corner connectors 3; the first connecting portion 31; a second connecting portion 32; a planar steel wall 33; a vertical steel wall 34; a saw tooth structure 35; a photovoltaic laminate 4.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.

Examples

The steel frame strip for the photovoltaic frame of this embodiment, refer to fig. 1-2, includes first installation cavity 1 and locates second installation cavity 2 of the below of first installation cavity 1. The first installation cavity 1 is used for installing the photovoltaic lamination part 4, and the second installation cavity 2 is used for installing the corner connectors 3 (as shown in fig. 3-4), so that the steel frame strips are connected through the corner connectors 3 to form a photovoltaic frame, and the photovoltaic frame can be used for packaging each side edge of the photovoltaic lamination part 4 through the first installation cavity 1 of each steel frame strip. Different from traditional aluminium system frame, the steel frame strip of this embodiment adopts the steel that mechanical strength is higher through cold-bending, rolling integrated into one piece, and its mechanical strength is higher, and the structure is more stable, and preparation is simpler, and the practicality is stronger.

Referring to fig. 1-2, the first installation cavity 1 includes a first steel wall 12, a second steel wall 13 and a third steel wall 14 which are sequentially connected in a bending manner, an upper end portion of the second steel wall 13 is connected with a left side of the first steel wall 12 in a bending manner, and a lower end portion of the second steel wall 13 is connected with a left side of the third steel wall 14 in a bending manner, so that the first installation cavity 1 is enclosed by the first steel wall 12, the second steel wall 13 and the third steel wall 14 together, and an installation cavity opening 11 for inserting a side edge of the photovoltaic laminate 4 is formed in the right side of the first installation cavity 1, so as to conveniently install the photovoltaic laminate 4. The second steel wall 13 is preferably arranged vertically.

Further, a glue containing cavity 15 is further arranged in the first installation cavity 1. Specifically, the glue containing cavity 15 is formed between the inner side wall of each steel wall (i.e., the first steel wall 12, the second steel wall 13, and the third steel wall 14) of the first mounting cavity 1 and the outer side surface of the photovoltaic laminate 4 installed in the first mounting cavity 1 (as shown in fig. 1, the filling position is the glue containing cavity 15), the glue containing cavity 15 is used for containing glue for encapsulation (hereinafter referred to as encapsulation glue), the glue containing cavity 15 is in a "C" shape, and the encapsulation glue in the glue containing cavity 15 can firmly adhere the inner side surface of each steel wall of the first mounting cavity 1 and the outer side surface of the corresponding side of the photovoltaic laminate 4, so that the photovoltaic laminate 4 is firmly fixed in the first mounting cavity 1 through the encapsulation glue.

Wherein, the right end of the first steel wall 12 is pressed downwards to form a lower pressing edge 121, the lower pressing edge 121 makes the right upper part of the glue containing cavity 15 narrow, so that the left upper part of the glue containing cavity 15 is relatively widened to form a glue collecting groove 151 (shown in fig. 1) compared with the right upper part of the glue containing cavity 15; the glue collecting groove 151 can be formed without bending and pressing the steel material at the right end part of the first steel wall 12 into the glue containing cavity 15, so that the arrangement of the lower pressing edge 121 can save the steel material and reduce the input cost of the steel material; moreover, compared with the thickness of a double-layer metal plate of the third side wall in the prior art (such as CN 213906609U), the lower pressing edge 121 is only the thickness of one layer of steel, and the thickness is reduced by half, so that the accumulated water and dust accumulation thickness of the photovoltaic laminating part 4 on the right end surface of the lower pressing edge 121 can be reduced, and the accumulated water and dust accumulation condition of the photovoltaic laminating part 4 used outdoors for a long time is improved. Preferably, referring to fig. 2, the height of the right end surface of the hold-down edge 121 is less than 2 times the thickness D of the first steel wall 12, and the height of the right end surface of the hold-down edge 121 is greater than or equal to 0.5 times the thickness D of the first steel wall 12, to reduce the water and ash accumulation thickness of the photovoltaic laminate 4 at the right end surface of the hold-down edge 121.

Moreover, the left end of the first steel wall 12 is located above the lower pressing edge 121, that is, there is a height difference between the left end of the first steel wall 12 and the lower pressing edge 121; the first steel wall 12 is further provided with a transition section 122 smoothly connecting the lower pressing edge 121, so that a slope of smooth connection exists between the left end portion of the first steel wall 12 and the lower pressing edge 121. Therefore, the cooperation of the pressing edge 121 and the transition section 122 can accelerate the washing rate of rainwater on the upper surface of the first steel wall 12, which is beneficial to automatic cleaning of rainwater.

In addition, the setting of changeover portion 122 makes to hold receipts in the gluey chamber 15 glue groove 151 and hold and glue slope and smooth intercommunication between the upper right portion in chamber 15, this makes the receipts of gluey chamber 15 glue a small amount of encapsulation that overflows in the groove 151 and glue in can more smooth inflow and hold gluey upper right portion in chamber 15, thereby be favorable to producing even excessive layer of gluing in the upper right portion in chamber 15 is glued to holding, so as to avoid holding to glue the partial starved condition of appearing in the upper right portion in chamber 15 and lead to the thickness of excessive glue layer inhomogeneous, and then be favorable to promoting the encapsulation effect of photovoltaic lamination spare 4.

Further, referring to fig. 2, the height a in the glue collecting groove 151 is less than or equal to the thickness D of the first steel wall 12, so that the packaging effect can be ensured, the amount of packaging glue can be saved, and the cost can be reduced. Specifically, the thickness D of the first steel wall 12 is the thickness of one layer of steel.

In an example of the present embodiment, the first steel wall 12 at the top of the glue collecting groove 151 is horizontally arranged. In another example of the embodiment, the first steel wall 12 at the top of the glue collecting groove 151 is arranged obliquely. When the first steel wall 12 at the top of the glue collecting groove 151 is arranged obliquely, the oblique direction is preferably inclined downwards from left to right to ensure the packaging effect.

Further, a part of the third steel wall 14 is recessed downwards to form an anti-glue-overflow groove 152 (shown in fig. 1) communicated with the glue containing cavity 15. The anti-overflow glue groove 152 can increase the storage capacity of the packaging glue at the lower part in the glue containing cavity 15 so as to prevent the excessive packaging glue from overflowing; moreover, the glue overflow preventing groove 152 is formed by partially downward sinking of the third steel wall 14, so that the glue overflow preventing groove 152 can increase the contact area between the third steel wall 14 and the encapsulation glue, and after the excessive encapsulation glue in the glue overflow preventing groove 152 is cured, a bulge can be formed, and the bulge and the glue overflow preventing groove 152 formed by downward sinking together form a clamping structure similar to concave-convex fit, so that the bonding force between the photovoltaic laminate 4 and the encapsulation glue and the third steel wall 14 can be increased, and further the transverse tensile resistance of the photovoltaic laminate 4 and the encapsulation glue to the steel frame strip can be increased; the glue overflow preventing groove 152 can also be regarded as a reinforcing rib of the third steel wall 14, and has a reinforcing effect on the third steel wall 14. In addition, under positive wind pressure state, this anti-overflow glue groove 152 can also play the cushioning effect, is favorable to offsetting the ripples power that photovoltaic lamination spare 4 produced the steel frame strip. The glue overflow prevention groove 152 is preferably located at the right middle of the third steel wall 14.

Furthermore, the cross section of the glue overflow preventing groove 152 is semicircular or semi-elliptical, and the upper end of the glue overflow preventing groove 152 is an open end, so that the packaging glue at the lower part in the glue accommodating cavity 15 can smoothly flow into the glue overflow preventing groove 152, thereby being beneficial to forming an even glue overflow structure in the glue overflow preventing groove 152 and further being beneficial to improving the packaging effect of the photovoltaic laminate 4.

Further, the height of the left side of the first mounting cavity 1 in the cavity is greater than the height of the mounting cavity 11 (the height of the mounting cavity 11 is the distance from the top of the mounting cavity 11 to the bottom of the mounting cavity 11 in fig. 1-2, and the distance does not include the wall thickness of the steel material forming the mounting cavity 11; the height of other components in the embodiment is similar to the height of the mounting cavity 11, namely the distance from the top of the other components to the bottom of the other components), so that more packaging glue can be contained in the left side of the first mounting cavity 1, and the packaging effect of the photovoltaic laminating part 4 in the first mounting cavity 1 is ensured; the left end of the third steel wall 14 is inclined upwards from left to right so that the left lower part in the glue containing cavity 15 forms an inclined slope cavity 153 (shown in fig. 1). Thus, under positive and negative wind pressure conditions, the inclined slope cavity 153 can play a role of buffering, preventing the up-and-down fluctuation of the edge of the photovoltaic laminate 4. The inclined slope cavity 153 is preferably located at the left side of the glue overflow prevention groove 152, and the inclined slope cavity 153 communicates with the glue overflow prevention groove 152.

Referring to fig. 1-2, the second installation cavity 2 includes a fourth steel wall 21 and a fifth steel wall 22 which are sequentially connected in a bent manner; and the top in the second mounting cavity 2 is provided with a concave-convex part 23 which is connected to the third steel wall 14 in a bending way, and the concave-convex part 23 is used for clamping the upper end part of the corner connector 3, so that the upper end part of the corner connector 3 can be stably and firmly mounted in the second mounting cavity 2.

Further, the distance between the right side of the third steel wall 14 and the left side of the photovoltaic laminate 4 mounted in the first mounting cavity 1 is preferably less than 9mm; therefore, the light shielding of the steel frame strip to the photovoltaic laminating part 4 can be reduced as much as possible while the packaging effect is ensured. Referring to fig. 2, the width W1 of the first steel wall 12 is less than or equal to the width W2 of the third steel wall 14, the width W2 of the third steel wall 14 is less than the width W3 of the fifth steel wall 22, and the ratio of the width W3 of the fifth steel wall 22 to the width W2 of the third steel wall 14 is 1-4:1. preferably, the ratio of 2:1. like this, through the width to each steel wall of above-mentioned, can minimize the steel frame strip and shelter from to the light of the back of photovoltaic lamination spare 4, be favorable to the 4 back reverberation of photovoltaic lamination spare, and then promote the generated energy.

Further, the fourth steel wall 21 is located on the same side of the concave-convex portion 23 and the fifth steel wall 22, an upper end portion of the fourth steel wall 21 is bent and connected to one side (e.g., left or right side) of the concave-convex portion 23, and a lower end portion of the fourth steel wall 21 is bent and connected to one side (e.g., left or right side) of the fifth steel wall 22; preferably, the fourth steel wall 21 is located on the left side of the concave-convex portion 23 and the fifth steel wall 22, in this case, the upper end portion of the fourth steel wall 21 is bent and connected to the left side of the concave-convex portion 23, the lower end portion of the fourth steel wall 21 is also bent and connected to the left side of the fifth steel wall 22, and the right side of the concave-convex portion 23 is bent and connected to the right side of the third steel wall 14. Like this, enable second installation cavity 2 and 1 overall arrangement of first installation cavity in vertical direction compacter, practice thrift steel. The fourth steel wall 21 is preferably arranged vertically and the fifth steel wall 22 is preferably arranged horizontally.

Furthermore, a bending portion 24 is arranged at a free end (such as a right end) of the fifth steel wall 22, and the bending portion 24 extends upwards along the right side of the fifth steel wall 22, so that the lower end portion of the corner connector 3 can be clamped in a cavity defined by the lower end portion of the fourth steel wall 21, the fifth steel wall 22 and the bending portion 24 together, and then the lower end portion of the corner connector 3 is stably and firmly installed in the second installation cavity 2.

In practice, the fifth steel wall 22 is provided with mounting means (e.g. threaded holes) to facilitate mounting of the steel frame strip to an external support.

In an example of the present embodiment, the upper end of the bent portion 24 is inclined into the second mounting cavity 2 so that the upper end of the bent portion 24 is clamped to the right side surface of the lower end of the corner brace 3. Or, in another example of the present embodiment, referring to fig. 1-2, the upper end of the bent portion 24 is provided with an inner edge 241 extending transversely to the inner side of the second mounting cavity 2, so that the right side of the lower end of the corner connector 3 is clamped in the cavity defined by the right side of the fifth steel wall 22, the bent portion 24 and the inner edge 241.

In practical application, the upper end of the corner brace 3 can be designed into different shapes, and correspondingly, the concave-convex part 23 can be designed into different shapes, so that clamping of the upper end of the corner brace 3 is ensured, and the mechanical strength of the concave-convex part 23 and the whole steel frame strip is improved.

The preferred scheme is as follows:

referring to fig. 1-2, the concave-convex portion 23 includes a sixth steel wall 231, a seventh steel wall 232, an eighth steel wall 233 and a ninth steel wall 234, the left side of the sixth steel wall 231 is connected with the upper end of the fourth steel wall 21 in a bent manner, the right side of the sixth steel wall 231 is connected with the upper end of the seventh steel wall 232 in a bent manner, the left side of the eighth steel wall 233 is connected with the lower end of the seventh steel wall 232 in a bent manner, the right side of the eighth steel wall 233 is connected with the lower end of the ninth steel wall 234 in a bent manner, and the upper end of the ninth steel wall 234 is connected with the right side of the third steel wall 14 in a bent manner; thus, the upper end of the fourth steel wall 21, the sixth steel wall 231 and the seventh steel wall 232 together form a concave portion, and the seventh steel wall 232, the eighth steel wall 233 and the ninth steel wall 234 together form a convex portion, so that the upper end of the corner connector 3 can be clamped in the concave portion, and the convex portion can also prevent the upper end of the corner connector 3 from shaking left and right. Among them, the sixth steel wall 231 and the eighth steel wall 233 are preferably horizontally disposed, and the seventh steel wall 232 and the ninth steel wall 234 are preferably vertically disposed, in which case, the eighth steel wall 233 is disposed apart from the third steel wall 14, and the left side of the sixth steel wall 231 partially abuts against the lower left of the third steel wall 14 to provide support for the third steel wall 14.

In practical applications, the fourth steel wall 21 is further provided with a reinforcing rib 211 (as shown in fig. 2) to enhance the mechanical strength of the second installation cavity 2 and the whole steel frame strip, so as to prevent the fourth steel wall 21 and the whole steel frame strip from deforming.

The embodiment also provides a photovoltaic frame, which is shown in fig. 3 and includes a plurality of frame strips 01 connected end to end in sequence and a corner connector 3 for connecting the ends of two adjacent frame strips 01, where the frame strip 01 is any one of the steel frame strips for a photovoltaic frame described in the embodiment.

In practical applications, a plurality of steel frame strips, such as four steel frame strips, are required to encapsulate each side of the photovoltaic laminate 4. Taking four steel frame strips as an example, referring to fig. 3-4, the first installation cavities 1 of the four steel frame strips are respectively used for installing each side edge of the photovoltaic laminate 4, and the glue accommodating cavities 15 of the first installation cavities 1 are further filled with packaging glue (as shown in fig. 1), so that the side edges of the photovoltaic laminate 4 are firmly installed in the first installation cavities 1; and two connecting portions (such as a first connecting portion 31 and a second connecting portion 32 shown in fig. 4-5) of the corner brace 3 are respectively installed in the second installation cavity 2 of two adjacent steel frame strips at the corner, so that the two adjacent steel frame strips at the corner are assembled through the corner brace 3, in this way, four steel frame strips (generally comprising two long steel frame strips and two short steel frame strips) are assembled into a square photovoltaic frame through the four corner braces 3, and thus, each side of the photovoltaic laminated part 4 can be encapsulated through the cooperation of the four steel frame strips and the four corner braces 3.

4-5, the corner connector 3 comprises a first connecting part 31 and a second connecting part 32 which are connected in a bending manner, and the first connecting part 31 and the second connecting part 32 are both provided with a plane steel wall 33 and a vertical steel wall 34 which are connected in a bending manner; specifically, the planar steel wall 33 of the first connecting portion 31 and the planar steel wall 33 of the second connecting portion 32 are located on the same plane, while the plane of the vertical steel wall 34 of the first connecting portion 31 intersects with the plane of the vertical steel wall 34 of the second connecting portion 32, and the vertical steel wall 34 of the first connecting portion 31 extends upward above the plane of the planar steel wall 33 thereof, and likewise, the vertical steel wall 34 of the second connecting portion 32 extends upward above the plane of the planar steel wall 33 thereof.

The upper end of the corner connector 3 is the upper end of the vertical steel wall 34, and the lower end of the corner connector 3 is the lower end of the vertical steel wall 34 and the whole plane steel wall 33, so that the upper end of the vertical steel wall 34 is clamped in the concave-convex portion 23, and the plane steel wall 33 is clamped in a cavity defined by the lower end of the fourth steel wall 21, the fifth steel wall 22 and the bending portion 24.

Further, the free ends of the plane steel wall 33 and/or the vertical steel wall 34 are provided with saw-tooth structures 35; preferably, the free ends of the planar steel wall 33 and the vertical steel wall 34 are provided with saw-tooth structures 35 to effectively increase the friction force and the fastening force between the planar steel wall 33 and the bent portion 24 and between the vertical steel wall 34 and the concave-convex portion 23.

The present embodiment further provides a photovoltaic module, which includes a photovoltaic laminate 4 and a frame for mounting the photovoltaic laminate 4, wherein the frame is any one of the photovoltaic frames described in the present embodiment.

Like the steel frame strip, the corner connector 3 is preferably made of steel, that is, the photovoltaic frame is made of steel (steel frame for short). Compared with the thermal expansion coefficient (23.2) of the aluminum material, the thermal expansion coefficient (13) of the steel material is closer to the thermal expansion coefficient (8.5) of the glass, so that the steel frame is safer in the process of alternating the heat and the cold of the photovoltaic module. Moreover, the flexibility of the steel frame is one third of that of the aluminum frame, and the solar cells used by the photovoltaic laminating part 4 are thinner and thinner, so that the hidden crack risk of the photovoltaic module with the steel frame is greatly reduced compared with the photovoltaic module with the aluminum frame under the same wind and snow load.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.

The technical solution provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (16)

1. The steel frame strip for the photovoltaic frame is characterized by comprising a first mounting cavity and a second mounting cavity, wherein the first mounting cavity is used for fixing a photovoltaic laminating piece through packaging glue, the second mounting cavity is arranged below the first mounting cavity, and corner connectors are mounted in the second mounting cavity so that the steel frame strips are connected through the corner connectors to be assembled into the photovoltaic frame; first installation cavity is including bending the first steel wall, second steel wall and the third steel wall of connection in proper order, the left side of first steel wall and third steel wall is connected respectively to the upper end and the lower extreme of second steel wall to make the right side of first installation cavity form the installation accent, form between the inner wall of first installation cavity and the photovoltaic lamination spare in the first installation cavity and supply the encapsulation to glue the chamber of holding that holds, the right-hand member of first steel wall pushes down and forms blank pressing down, so that the upper left portion widen formation that holds gluey chamber receives gluey groove, first steel wall is equipped with the changeover portion of blank pressing under the smooth connection.

2. The steel frame strip for photovoltaic frames as recited in claim 1, wherein the height a of the glue collecting groove is less than or equal to the thickness D of the first steel wall.

3. The steel frame strip for photovoltaic frames as recited in claim 1, wherein the height of the right end face of the lower pressing edge is less than 2 times the thickness D of the first steel wall, and the height of the right end face of the lower pressing edge is greater than or equal to 0.5 times the thickness D of the first steel wall.

4. The steel frame strip for photovoltaic frames as recited in claim 1, wherein the first steel wall at the top of the glue collecting groove is inclined.

5. The steel frame strip for the photovoltaic border, according to claim 1, wherein a part of the third steel wall is recessed downwards to form an anti-glue-overflow groove communicated with the glue containing cavity.

6. The steel frame strip for photovoltaic borders according to claim 5, wherein said glue overflow preventing groove is located at the right position of the middle of the third steel wall.

7. The steel frame strip for photovoltaic frames as recited in claim 5, wherein the cross section of the glue overflow preventing groove is semicircular or semi-elliptical.

8. The steel frame strip for photovoltaic frames as recited in claim 1, wherein the height of the left side of the first installation cavity is greater than the height of the opening of the installation cavity.

9. The steel frame strip for photovoltaic frames as recited in claim 1, wherein the left end of the third steel wall is inclined upward from left to right, so that the left lower portion of the glue accommodating cavity forms an inclined slope cavity.

10. The steel frame strip for the photovoltaic frame as recited in claim 1, wherein the second installation cavity comprises a fourth steel wall and a fifth steel wall which are sequentially connected in a bending manner, a concave-convex portion which is connected with the third steel wall in a bending manner and is used for clamping the upper end of the corner brace is arranged at the top of the second installation cavity, the upper end and the lower end of the fourth steel wall are respectively connected to one side of the concave-convex portion and one side of the fifth steel wall in a bending manner, and a bending portion used for clamping the lower end of the corner brace is arranged at the free end of the fifth steel wall.

11. The steel frame strip for photovoltaic edge frames as recited in claim 10, wherein the width W1 of the first steel wall is less than or equal to the width W2 of the third steel wall, and the ratio of the width W3 of the fifth steel wall to the width W2 of the third steel wall is 1-4:1.

12. the steel frame strip for photovoltaic edge frames as claimed in claim 10, wherein the fourth steel wall is located at the left side of the concavo-convex part and the fifth steel wall, and the bent part extends upward along the right side of the fifth steel wall; the upper end of the bending part inclines towards the second mounting cavity, or the upper end of the bending part is also provided with an inner edge transversely extending towards the inner side of the second mounting cavity.

13. The steel frame strip for the photovoltaic frame as recited in claim 10, wherein the uneven portion comprises a sixth steel wall, a seventh steel wall, an eighth steel wall and a ninth steel wall, wherein the left side and the right side of the sixth steel wall are respectively connected with the upper ends of the fourth steel wall and the seventh steel wall in a bent manner, the left side and the right side of the eighth steel wall are respectively connected with the lower ends of the seventh steel wall and the ninth steel wall in a bent manner, and the upper end of the ninth steel wall is connected with the right side of the third steel wall in a bent manner; the left side of the sixth steel wall is in contact with the lower left side of the third steel wall.

14. The utility model provides a photovoltaic frame, includes a plurality of frame strips of end to end in proper order and is used for connecting the angle sign indicating number of the tip of two adjacent frame strips, its characterized in that, the frame strip is any one of claims 1-13 a steel frame strip for photovoltaic frame, the angle sign indicating number includes first connecting portion and the second connecting portion of buckling the connection, first connecting portion and second connecting portion are installed respectively in the second installation cavity of two adjacent steel frame strips.

15. The photovoltaic frame according to claim 14, wherein each of the first connecting portion and the second connecting portion has a planar steel wall and a vertical steel wall which are connected by bending, an upper end of the vertical steel wall is clamped to the concave-convex portion, and the planar steel wall is clamped to a cavity defined by a lower end of the fourth steel wall, the fifth steel wall and the bending portion; and the free end of the plane steel wall and/or the vertical steel wall is/are provided with a sawtooth structure.

16. A photovoltaic module comprising a photovoltaic laminate, further comprising a photovoltaic border of claim 14 or 15 for installation of the photovoltaic laminate.

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