Bending assembly and bus bar bending mechanism

Abstract

The utility model relates to the technical field of photovoltaic assembly production, in particular to a bending assembly and a bus bar bending mechanism. The bending assembly is used for bending the bus bar twice, and when the bus bar is bent for the first time, under the condition that the pressing block moves to a first position to press the bus bar on the carrier plate, the ejection block acts to be matched with the pressing block to enable one end of the bus bar to be bent upwards; and during secondary bending, under the condition that the pressing block moves to a second position to press the bus bar on the carrier plate, the pressing plate acts to enable the folded part of the bus bar to deflect towards the horizontal part of the bus bar, and under the matching action of the pressing block, the lower half section of the folded part of the bus bar is attached to the horizontal part of the bus bar, and the upper half section of the folded part of the bus bar is erected upwards. The bending assembly bends the bus bar twice to form a multi-section structure with a horizontal section, a transition section and a vertical section. According to the bus bar bending mechanism, the bending assembly is used, and a set of bus bars which are provided with multiple sections of mechanisms and used for being welded to a junction box can be manufactured at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic module production, and particularly relates to a bending assembly and a busbar bending mechanism. Background Art

[0002] As Figure 1 shown, in a full-screen photovoltaic module, the busbars are arranged on the back of the cells. One set of busbars welded to the junction box includes a horizontal section, a transition section, and a vertical section connected in sequence. The transition section is attached to the horizontal section, the vertical section is perpendicular to the transition section and the horizontal section, the horizontal section is welded to the solder tape, and the vertical section is welded to the junction box; the vertical section and the transition section are distributed at one end or both ends of the horizontal section. In the lamination process, the vertical section is flattened to be coplanar with the transition section; in the process of installing the junction box, the vertical section will be lifted. Compared with L-shaped or U-shaped busbars, the horizontal section of the busbar with the above structure can reduce the pressure per unit area of the cell when the vertical section is lifted, effectively avoiding cell crack or breakage.

[0003] In the prior art, the mechanism for bending the busbar can only manufacture L-shaped or U-shaped busbars, and cannot manufacture the busbars welded to the junction box in the above full-screen photovoltaic module. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a bending assembly and a busbar bending mechanism.

[0005] To achieve the above object, the utility model provides the following solutions:

[0006] On the one hand, the present application provides a bending assembly, including: a carrier plate, a top block, a pressing block, and a pressing plate. The top block is disposed on one side of the carrier plate in a liftable manner, the pressing block is disposed above the carrier plate near the top block in a liftable manner, the carrier plate can receive the busbar, and the pressing block can also move reciprocally along the length direction of the busbar. When the pressing block moves to the first position to press the busbar on the carrier plate, the top block acts in cooperation with the pressing block to fold up one end of the busbar; when the pressing block moves to the second position to press the busbar on the carrier plate, the pressing plate acts to deflect the folded part of the busbar towards the horizontal part of the busbar. Under the cooperative action of the pressing block, the lower half of the folded part of the busbar fits with the horizontal part of the busbar, and the upper half of the folded part of the busbar stands up.

[0007] Further, the pressing block can also move reciprocally along the width direction of the busbar.

[0008] Further, the pressing plate is disposed on the other side of the top block relative to the carrier plate, and the pressing plate is fixed on a rotating shaft. The rotating shaft can drive the pressing plate to rotate and press against the middle area of the folded part of the bus bar.

[0009] Further, there are two carrier plates, two top blocks, and two pressing blocks. The two carrier plates, two top blocks, and two pressing blocks are mirror-symmetrically arranged with respect to the vertical plane where the rotating shaft is located. The rotating shaft can drive the pressing plate to rotate bidirectionally, so that the pressing plate rotates and presses against the middle areas of the folded parts of the bus bar on both sides thereof.

[0010] On the other hand, the present utility model further provides a bus bar bending mechanism, which includes a mounting plate and the bending assembly. There are three bending assemblies, which are sequentially fixed on the mounting plate along the length direction of the bus bar.

[0011] Further, a limiting member is provided on the carrier plate.

[0012] Further, along the length direction of the bus bar, a plurality of grooves are provided on the carrier plate. A movable plate is liftably provided above the carrier plate. A plurality of protrusions are provided at the bottom of the movable plate, and the protrusions are arranged in one-to-one correspondence with the grooves.

[0013] Further, the movable plate can also reciprocally move along the width direction of the bus bar.

[0014] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0015] The bending assembly provided by the present utility model bends the bus bar in two times. During the first bending, when the pressing block moves to the first position and presses the bus bar on the carrier plate, the top block acts in cooperation with the pressing block to fold up one end of the bus bar. During the second bending, when the pressing block moves to the second position and presses the bus bar on the carrier plate, the pressing plate acts to deflect the folded part of the bus bar towards the horizontal part of the bus bar. Under the cooperative action of the pressing block, the lower half of the folded part of the bus bar fits with the horizontal part of the bus bar, and the upper half of the folded part of the bus bar stands up. The bending assembly bends the bus bar in two times, and a multi-segment structure with a horizontal section, a transition section, and a vertical section can be formed. The bus bar bending mechanism provided by the present utility model uses the bending assembly and can simultaneously manufacture a group of bus bars with a multi-segment structure for welding with a junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a group of bus bars for welding with a junction box in a full-screen photovoltaic module of the present utility model;

[0017] Figure 2 is a schematic structural diagram of a first embodiment of the bending assembly of the present utility model;

[0018] Figure 3 It is a schematic diagram of the state of the bus bar when it is not bent in the first embodiment of the bending assembly of the present utility model;

[0019] Figure 4 It is a schematic diagram of the state of the bus bar when it is bent for the first time in the first embodiment of the bending assembly of the present utility model;

[0020] Figure 5 It is a schematic diagram of the state of the bus bar when it is bent for the second time in the first embodiment of the bending assembly of the present utility model;

[0021] Figure 6 It is a schematic diagram of the state of the bus bar when it is bent for the first time in the second embodiment of the bending assembly of the present utility model;

[0022] Figure 7 It is a schematic diagram of the state of the bus bar when it is bent for the second time in the third embodiment of the bending assembly of the present utility model;

[0023] Figure 8 It is a schematic diagram of the state of the bus bar when it is bent for the second time in the fourth embodiment of the bending assembly of the present utility model;

[0024] Figure 9 It is a schematic diagram of the structure of the fifth embodiment of the bending assembly of the present utility model;

[0025] Figure 10 It is a schematic diagram of the structure of the first embodiment of the bus bar bending mechanism of the present utility model;

[0026] Figure 11 It is in the present utility model Figure 10 An enlarged view of area A;

[0027] Figure 12 It is a schematic diagram of the structure of the second embodiment of the bus bar bending mechanism of the present utility model;

[0028] Figure 13 It is a schematic diagram of the structure of the movable plate in the second embodiment of the bus bar bending mechanism of the present utility model.

[0029] Wherein: 10, bus bar; 20, bending assembly; 21, carrier plate; 211, limiting member; 212, groove; 22, top block; 23, pressing block; 24, pressing plate; 241, rotating shaft; 30, mounting plate; 40, movable plate; 41, protrusion. Detailed implementation manners

[0030] The technical solutions and technical effects of the present utility model will be further elaborated in detail below in conjunction with the drawings of the present utility model.

[0031] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the", and "on the" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. It should also be noted that in this article, relational terms such as first and second are only used to distinguish the first feature from the second feature, and do not necessarily require or imply any actual relationship or order between these features.

[0033] As Figure 1 shown, a set of busbars 10 welded to the junction box in the full-screen photovoltaic module includes four busbars 10. One end of the two busbars 10 located on the left and right sides is erected upward, and both ends of the two busbars 10 located in the middle are erected upward. From top to bottom, each busbar 10 includes a vertical section folded upward, a straight transition section, and a straight horizontal section. It should be noted that the battery cells in the full-screen photovoltaic module are back-contact battery cells.

[0034] As Figures 2 - 5As shown, in order to prepare the above-mentioned bus bar 10, the present utility model provides a bending assembly 20, which includes: a carrier plate 21, a top block 22, a pressing block 23 and a pressing plate 24. The top block 22 is arranged on one side of the carrier plate 21. The pressing block 23 is arranged above the carrier plate 21 near the top block 22 and can be lifted and lowered. The carrier plate 21 can hold the bus bar 10. The pressing block 23 can also reciprocate along the length direction of the bus bar 10. When the pressing block 23 moves to the first position and presses the bus bar 10 on the carrier plate 21, the top block 22 acts in cooperation with the pressing block 23 to fold up one end of the bus bar 10; when the pressing block 23 moves to the second position and presses the bus bar 10 on the carrier plate 21, the pressing plate 24 acts to deflect the folded part of the bus bar 10 towards the horizontal part of the bus bar 10. Under the cooperative action of the pressing block 23, the lower half of the folded part of the bus bar 10 fits with the horizontal part of the bus bar 10, and the upper half of the folded part of the bus bar 10 stands up. Among them, after the bus bar 10 is bent twice, the part in direct contact with the carrier plate 21 is the horizontal section, the part standing up is the vertical section, and the part connecting the horizontal section and the vertical section and fitting with the horizontal section is the transition section.

[0035] The bending process of the end of the bus bar 10 is as follows: First, as Figure 3 shown, place the bus bar 10 on the carrier plate 21, and one end of the bus bar 10 extends out of the carrier plate 21. The pressing block 23 presses the bus bar 10. At this time, the pressing block 23 is in the first position; then, as Figure 4 shown, the top block 22 acts to fold up the end of the bus bar extending out of the carrier plate 21, and the bus bar 10 is bent for the first time; finally, as Figure 4 shown, the pressing block 23 moves to the right to the second position and presses the bus bar 10, and the pressing plate 24 moves to deflect the bus bar 10, and the bus bar 10 is bent for the second time. Through two bends, the straight bus bar 10 is folded into a multi-segment structure with a horizontal section, a transition section and a vertical section.

[0036] In the present utility model, the pressing block 23 can also reciprocate along the width direction of the bus bar 10. After the pressing block 23 moves out of the upper part of the bus bar 10 along the width direction of the bus bar 10, it is convenient to take away the bus bar 10 from above.

[0037] In the first embodiment of the bending assembly of the present utility model, the pressing plate 24 is arranged on the other side of the top block 22 relative to the carrier plate 21. The pressing plate 24 is fixed on the rotating shaft 241. The rotating shaft 241 can drive the pressing plate 24 to rotate and press against the middle area of the folded part of the bus bar 10. The rotatable pressing plate 24 is used to cooperate with the pressing block 23 to bend the bus bar 10 for the second time. The top block 22 can move up and down.

[0038] In the second embodiment of the bending assembly of the present utility model, as Figure 6 shown, the rotatable top block 2 is used to cooperate with the pressing block to bend the bus bar 10 for the first time.

[0039] In the third embodiment of the bending assembly of the present utility model, as Figure 7 shown, the pressing plate 24 can move horizontally along the length direction of the bus bar 10 and can also move up and down. When the bus bar 10 is bent for the second time, the pressing plate 24 first moves horizontally to incline the folded part of the bus bar 10, and then moves down to bend it.

[0040] In the fourth embodiment of the bending assembly of the present utility model, as Figure 8 shown, the pressing plate 24 is located obliquely above the carrier plate 21 and can move in the inclined direction to bend the bus bar 10.

[0041] In the fourth embodiment of the bending assembly of the present utility model, as Figure 9 shown, there are two carrier plates 21, two top blocks 22 and two pressing blocks 23. The two carrier plates 21, two top blocks 22 and two pressing blocks 23 are mirror-symmetrically arranged with respect to the vertical plane where the rotating shaft 241 is located. The rotating shaft 241 can drive the pressing plate 24 to rotate bidirectionally, so that the pressing plate 24 rotates and presses the middle areas of the folded parts of the bus bars 10 on both sides of it, and a rotatable pressing plate 24 is used to perform secondary bending on the bus bars 10 on the two carrier plates 21.

[0042] As Figure 10 and Figure 11 shown, the present utility model also provides a bus bar bending mechanism, which includes a mounting plate 30 and a bending assembly 20. There are three bending assemblies 20, which are sequentially fixed on the mounting plate 30 along the length direction of the bus bar 10, and can bend a group of bus bars 10 welded to the junction box in a full-screen photovoltaic module at one time.

[0043] In an alternative embodiment of the present utility model, a limiting member 211 is provided on the carrier plate 21 to ensure that the bus bar 10 is in a specified position when the bus bar 10 is placed on the carrier plate 21. The limiting members 211 are arranged in pairs, and after the bus bar 10 is placed on the carrier plate 21, it is located between the two paired limiting members 211.

[0044] As Figure 12 and Figure 13 shown, in the second embodiment of the bus bar bending mechanism of the present utility model, along the length direction of the bus bar 10, a plurality of grooves 212 are provided on the carrier plate 21. An activity plate 40 is liftably provided above the carrier plate 21, and a plurality of protrusions 41 are provided at the bottom of the activity plate 40. The protrusions 41 are arranged in one-to-one correspondence with the grooves 212. After the pressing block 23 moves out above the bus bar 10 along the width direction of the bus bar 10, it can avoid the protrusions 41 on the activity plate 40. The protrusions 41 are used to make a concave structure on the horizontal section of the bus bar 10, and the concave structure is welded to the solder tape spaced from the back surface of the back-contact solar cell.

[0045] In an alternative embodiment of the present utility model, the movable plate 40 can also reciprocate in the width direction of the bus bar 10. After the movable plate 40 moves out above the bus bar 10 in the width direction of the bus bar 10, it is convenient to take away a group of bus bars 10 from above.

[0046] It should be noted that in the present utility model, the driving members of the top block 22, the pressing block 23 and the rotating shaft 241 are arranged on the mounting plate 30. The driving members of the top block 22 and the pressing block 23 are preferably cylinders, and the driving member of the rotating shaft 241 is preferably a motor.

[0047] The above-disclosed are only the preferred embodiments of the present utility model. Of course, the scope of the rights of the present utility model cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A bending component, characterized in that, Including: A carrier plate (21), a top block (22), a pressing block (23) and a pressing plate (24). The top block (22) is arranged on one side of the carrier plate (21). The pressing block (23) is arranged above the carrier plate (21) near the top block (22) and can be lifted and lowered. The carrier plate (21) can receive a bus bar (10). The pressing block (23) can also reciprocate along the length direction of the bus bar (10). When the pressing block (23) moves to the first position to press the bus bar (10) on the carrier plate (21), the top block (22) acts in cooperation with the pressing block (23) to fold up one end of the bus bar (10) upward. When the pressing block (23) moves to the second position to press the bus bar (10) on the carrier plate (21), the pressing plate (24) acts to deflect the folded part of the bus bar (10) towards the horizontal part of the bus bar (10). Under the cooperative action of the pressing block (23), the lower half of the folded part of the bus bar (10) fits with the horizontal part of the bus bar (10), and the upper half of the folded part of the bus bar (10) stands up upward.

2. The bending assembly according to claim 1, wherein: The pressing block (23) can also reciprocate along the width direction of the bus bar (10).

3. The bending assembly according to claim 2, wherein: The pressing plate (24) is arranged on the other side of the top block (22) relative to the carrier plate (21). The pressing plate (24) is fixed on a rotating shaft (241). The rotating shaft (241) can drive the pressing plate (24) to rotate and press against the middle area of the folded part of the bus bar (10).

4. The bending assembly according to claim 3, wherein: There are two carrier plates (21), two top blocks (22) and two pressing blocks (23). The two carrier plates (21), the two top blocks (22) and the two pressing blocks (23) are arranged symmetrically with respect to the vertical plane where the rotating shaft (241) is located. The rotating shaft (241) can drive the pressing plate (24) to rotate bidirectionally, so that the pressing plate (24) rotates and presses against the middle areas of the folded parts of the bus bar (10) on both sides of it.

5. A busbar bending mechanism, characterized in that: Including a mounting plate (30) and the bending assembly (20) as described in claim 4. There are three bending assemblies (20) and they are sequentially fixed on the mounting plate (30) along the length direction of the bus bar (10).

6. The bus bar bending mechanism according to claim 5, wherein: A limiting member (211) is arranged on the carrier plate (21).

7. The bus bar bending mechanism according to claim 5, wherein: Along the length direction of the bus bar (10), a plurality of grooves (212) are arranged on the carrier plate (21). A movable plate (40) is arranged above the carrier plate (21) and can be lifted and lowered. A plurality of protrusions (41) are arranged at the bottom of the movable plate (40). The protrusions (41) are arranged in one-to-one correspondence with the grooves (212).

8. The bus bar bending mechanism according to claim 7, wherein: The movable plate (40) can also reciprocate along the width direction of the bus bar (10).

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