Solar cell bus bar welding machine

Abstract

The utility model discloses a solar cell bus bar welding machine which comprises a supporting mechanism, a cell piece limiting mechanism, a bus bar limiting mechanism and a welding mechanism. The supporting mechanism comprises a welding platform, and supporting legs are symmetrically and fixedly arranged on the bottom face of the welding platform. The battery piece limiting mechanism comprises a limiting plate arranged on the top face of the welding platform, and a plurality of limiting grooves used for limiting battery pieces are formed in the top face of the limiting plate. The bus bar limiting mechanism is arranged on one side of the limiting plate and is used for carrying out limiting placement on the bus bar; the welding mechanism is arranged on the bottom face of the welding platform and used for welding the bus bar to a welding strip on a battery piece. According to the solar cell bus bar welding machine, in the whole welding process, a welding strip and a bus bar do not need to be held, positioned and welded manually, the welding efficiency is improved, the accuracy of the distance between battery pieces is improved, the manual participation degree is reduced, and the welding effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component production equipment, in particular to a solar cell busbar welding machine. Background Art

[0002] As the photovoltaic market gradually matures, more and more companies have joined the industry, making the competition in the photovoltaic industry increasingly fierce, and reducing costs has become a general trend. In the process of solar cell manufacturing, the welding ribbon is used to connect multiple solar cells in series. The welding ribbon is a tinned copper ribbon formed by plating a layer of tin on the surface of the copper wire. The above structure can ensure its conductivity and weldability. When welding the busbar and the welding ribbon together, it is generally done by manually heating the welding ribbon or the busbar with an electric soldering iron to melt the tinned layer and weld the welding ribbon and the busbar together. The welding is difficult, the welding time is long, the spacing between the cells is inconsistent, the labor intensity is high, and the efficiency is low.

[0003] A new type of solar cell busbar welding machine can effectively improve labor efficiency, enhance busbar welding consistency, and effectively ensure the spacing between cells. At the same time, it improves the appearance of photovoltaic modules, especially in the current photovoltaic curtain wall applications, high-transmittance full-glass modules have a higher application value. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an automatic welding machine for solar cell busbars.

[0005] The utility model provides a solar cell busbar welding machine, comprising a supporting mechanism, a cell piece limiting mechanism, a busbar limiting mechanism and a welding mechanism; wherein:

[0006] The support mechanism comprises a welding platform, and the bottom surface of the welding platform is symmetrically fixed with support legs;

[0007] The battery cell limiting mechanism comprises a limiting plate arranged on the top surface of the welding platform, and a plurality of limiting grooves for limiting the battery cell are arranged on the top surface of the limiting plate;

[0008] The busbar limiting mechanism is arranged on one side of the limiting plate and is used to limit the placement of the busbar;

[0009] The welding mechanism is arranged on the bottom surface of the welding platform and is used to weld the busbar to the welding strip on the battery cell.

[0010] Preferably, the limit plate is fixed on the top surface of the welding platform by bolts; the limit groove includes a square groove arranged corresponding to the battery cell, and a strip groove is arranged on the plate surface of the limit plate on the side of the square groove close to the busbar limiting mechanism corresponding to the welding strip on the battery cell, and the strip groove extends to the outer side of the limit plate.

[0011] Preferably, the busbar limiting mechanism includes a strip limiting baffle fixedly arranged on the top surface of the welding platform and located on the side close to the strip groove, and two strip limiting baffles are arranged parallel to each other; a U-shaped notch is arranged on the strip limiting baffle close to the side of the strip groove corresponding to the strip groove, which is used for the welding strip on the battery cell to pass through and enter between the two strip limiting baffles.

[0012] Preferably, the welding mechanism includes laminating solar cells and welding solar cells; wherein,

[0013] The bonding solar cell sheet comprises a through hole on the welding platform located between the two strip-shaped limit baffles and corresponding to the U-shaped notch, a protective ring is embedded and fixedly arranged inside the through hole, a heat conductive sheet is fixedly arranged inside the protective ring, and the top surface of the heat conductive sheet is flush with the top surface of the welding platform;

[0014] The welding solar cell comprises a U-shaped mounting frame fixedly arranged on the bottom surface of the welding platform, a lifting plate slidably arranged inside the U-shaped mounting frame, an electric soldering iron fixedly arranged in a vertical direction corresponding to the heat conducting plate on the top surface of the lifting plate; an electric push rod fixedly arranged in a vertical direction below the lifting plate inside the U-shaped mounting frame, a transmission end of the electric push rod fixedly arranged on the bottom surface of the lifting plate, and used for driving the lifting plate to move up and down.

[0015] Preferably, it also includes a pressure strip arranged corresponding to the busbar limiting mechanism, and the pressure strip can be placed between the two strip-shaped limiting baffles to press and fit the welding strip on the battery cell tightly with the busbar.

[0016] Preferably, the protective ring is made of high temperature resistant heat insulating material.

[0017] Preferably, the heat conducting sheet is shaped like a cap and is made of a material with good thermal conductivity.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The solar cell busbar welding machine of the utility model places the cell sheet (including the soldering strip) and the busbar in limited positions respectively, and presses the busbar and the soldering strip on the cell sheet by means of a pressure strip to make them fully contact; then the electric push rod drives the lifting plate and the electric soldering iron to rise in the direction close to the heat conducting sheet, and the electric soldering iron heats the heat conducting sheet. The high temperature on the heat conducting sheet melts the tin on the soldering strip, and the soldering strip is integrated with the busbar, and the welding process is completed after cooling;

[0020] During the entire welding process, there is no need for manual positioning and welding, the level of human involvement is low and the welding efficiency is high.

[0021] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0022] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 A schematic diagram of the structure of a solar cell busbar welding machine provided in an embodiment of the utility model from a top view;

[0025] Figure 2 It is a front view structural diagram of a solar cell busbar welding machine;

[0026] Figure 3 It is an enlarged structural schematic diagram of the structure at A;

[0027] Numbers in the figure: 1. welding platform; 2. supporting leg; 3. limiting plate; 4. limiting groove; 41. square groove; 42. strip groove; 5. strip limiting baffle; 6. U-shaped notch; 7. through hole; 8. protective ring; 9. heat conductive sheet; 10. U-shaped mounting frame; 11. lifting plate; 12. electric soldering iron; 13. electric push rod; 14. pressure strip; 15. battery cell; 16. welding ribbon; 17. busbar. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Solder ribbons are usually used for conductive connection and grounding, and are set on the battery cells; while busbars are conductive materials that connect multiple solder ribbons together to transfer electrical energy.

[0031] Please refer to Figures 1 to 3 The embodiment of the utility model provides a solar cell busbar welding machine, including a supporting mechanism, a cell limiting mechanism, a busbar limiting mechanism and a welding mechanism; wherein,

[0032] The supporting mechanism comprises a welding platform 1, and the bottom surface of the welding platform 1 is symmetrically fixed with supporting legs 2;

[0033] The cell limiting mechanism includes a limiting plate 3 arranged on the top surface of the welding platform 1, and a plurality of limiting grooves 4 for limiting the cell 15 are arranged on the top surface of the limiting plate 3. The cell 15 is placed one by one inside the corresponding limiting grooves 4 to achieve the positioning effect, so that the welding strip 16 on it is in contact with the positioned busbar 17 for welding;

[0034] In a preferred embodiment, the limit plate 3 is fixedly arranged on the top surface of the welding platform 1 by bolts, so that the limit plate 3 can be detachably installed, which is convenient for replacing the limit plates 3 of different specifications according to the battery cells 15 of different models and sizes;

[0035] The limiting groove 4 includes a square groove 41 set corresponding to the battery cell 15, and a strip groove 42 is set on the plate surface of the limiting plate 3 on the side of the square groove 41 close to the limiting mechanism of the busbar 17 corresponding to the welding strip 16 on the battery cell 15. The strip groove 42 extends to the outer side of the limiting plate 3, and the strip groove 4 is connected to the inside of the corresponding square groove 41.

[0036] The busbar limiting mechanism is arranged on one side of the limiting plate 3 and is used to limit the placement of the busbar 17;

[0037] In a preferred embodiment, the limiting mechanism of the busbar 17 includes a strip-shaped limiting baffle plate 5 fixedly arranged on the top surface of the welding platform 1 and located on the side close to the strip-shaped groove 42, and two strip-shaped limiting baffle plates 5 are arranged parallel to each other; the strip-shaped limiting baffle plates 5 are arranged along the length direction of the welding platform 1 or the limiting plate 3;

[0038] A U-shaped notch is provided on the strip limit baffle plate close to one side of the strip groove 42 corresponding to the strip groove, so that the welding strip 16 on the battery cell 15 can pass through the U-shaped notch 6 and enter between the two strip limit baffle plates 5 to abut against the busbar 17 .

[0039] The welding mechanism is disposed on the bottom surface of the welding platform 1 and is used to weld the busbar 17 to the welding ribbon 16 on the battery cell 15 .

[0040] In a preferred embodiment, the welding mechanism includes laminating solar cells and welding solar cells; wherein,

[0041] The solar cell bonding device is used to abut the welding ribbon 16 with the busbar 17 to facilitate the subsequent welding work; the solar cell bonding device includes a through hole 7 provided between two strip-shaped limit baffles 5 on the welding platform 1 and corresponding to the U-shaped notch 6, a protective ring 8 is embedded and fixedly provided inside the through hole 7, a heat conducting sheet 9 is fixedly provided inside the protective ring 8, and the top surface of the heat conducting sheet 9 is flush with the top surface of the welding platform 1;

[0042] The welding of solar cells comprises a U-shaped mounting frame 10 fixedly arranged on the bottom surface of the welding platform 1, and door panels (not shown in the figure) are respectively hingedly arranged on the two sides of the U-shaped mounting frame 10, which are used to protect the components inside the U-shaped mounting frame 10 to prevent the electric soldering iron 12 from causing accidental injuries to the staff during the process of lifting and lowering; strip-shaped heat dissipation through holes are evenly arranged on the board surface of the door panel to dissipate the heat generated by the electric soldering iron 12 in time;

[0043] A lifting plate 11 is slidably arranged inside the U-shaped mounting frame 10, and an electric soldering iron 12 is fixedly arranged in the vertical direction on the top surface of the lifting plate 11 corresponding to the heat conducting plate 9; an electric push rod 13 is fixedly arranged in the vertical direction below the lifting plate 11 inside the U-shaped mounting frame 10, and a transmission end of the electric push rod 13 is fixedly arranged on the bottom surface of the lifting plate 11 for driving the lifting plate 11 to move up and down.

[0044] In a preferred embodiment, it also includes a pressure strip 14 corresponding to the limiting mechanism of the busbar 17 , and the pressure strip 14 can be placed between the two strip-shaped limiting baffles 5 to press and fit the welding strip 16 on the battery cell 15 and the busbar 17 tightly.

[0045] In a preferred embodiment, the protective ring 8 and the pressure strip 14 are both made of high temperature resistant heat insulating material to avoid burns to the structure outside the protective ring 8 and reduce heat loss.

[0046] In a preferred embodiment, the shape of the heat conductive sheet 9 is set to be cap-shaped, and the heating end of the electric soldering iron 12 can be inserted into the interior of the cap-shaped heat conductive sheet 9 to increase the heating speed of the heat conductive sheet 9; and the heat conductive sheet 9 is made of a material with good thermal conductivity.

[0047] The working principle of this utility model:

[0048] The battery cell 15 is placed inside the square groove 41, and the welding strip 16 on the battery cell 15 is placed along the strip groove 42, and the position of the battery cell 15 inside the square groove 41 is moved so that the welding strip 16 thereon passes through the corresponding U-shaped notch 6, extends between the two strip limit baffles 5 and is located on the top surface of the corresponding heat conductive sheet 9, and then the busbar 17 is placed between the two strip limit baffles 5, and the busbar 17 is located on the top surface of the welding strip 16, and the pressure strip 14 is placed on the top surface of the busbar 17 for pressing, so as to achieve a close fit between the busbar 17 and the welding strip 16, thereby improving the effect of subsequent welding;

[0049] Then, the electric push rod 13 is started to drive the lifting plate 11 to rise inside the U-shaped mounting frame 10, and the electric soldering iron 12 on the top surface of the lifting plate 11 moves toward the direction close to the corresponding heat conducting sheet 9, and the electric soldering iron 12 contacts the heat conducting sheet 9, and the temperature of the heat conducting sheet 9 increases, thereby melting the soldering strip 16 in contact with the heat conducting sheet 9, and then the electric soldering iron 12 is moved downward to reduce the temperature of the heat conducting sheet 9, and the melted tin is cooled, so that the soldering strip 16 and the busbar 17 are integrated, and the welding process is completed;

[0050] During the entire welding process, there is no need for manual holding, positioning, and welding of the welding ribbon 16 and the bus ribbon 17, which improves welding efficiency, reduces the degree of manual participation, and provides a good welding effect.

[0051] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The above are only preferred embodiments of the present application and are 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 solar cell busbar welding machine, characterized in that: It includes a supporting mechanism, a battery cell limiting mechanism, a busbar limiting mechanism and a welding mechanism; wherein, The support mechanism comprises a welding platform, and the bottom surface of the welding platform is symmetrically fixed with support legs; The battery cell limiting mechanism comprises a limiting plate arranged on the top surface of the welding platform, and a plurality of limiting grooves for limiting the battery cell are arranged on the top surface of the limiting plate; The busbar limiting mechanism is arranged on one side of the limiting plate and is used to limit the placement of the busbar; The welding mechanism is arranged on the bottom surface of the welding platform and is used to weld the busbar to the welding strip on the battery cell.

2. The solar cell busbar welding machine according to claim 1, characterized in that: The limit plate is fixed on the top surface of the welding platform by bolts; the limit groove includes a square groove arranged corresponding to the battery cell, and a strip groove is arranged on the plate surface of the limit plate corresponding to the welding strip on the battery cell on the side of the square groove close to the busbar limiting mechanism, and the strip groove extends to the outer side of the limit plate.

3. The solar cell busbar welding machine according to claim 2, characterized in that: The busbar limiting mechanism includes a strip limiting baffle fixedly arranged on the top surface of the welding platform and located on the side close to the strip groove, and two strip limiting baffles are arranged parallel to each other; a U-shaped notch is arranged on the strip limiting baffle close to the side of the strip groove corresponding to the strip groove, which is used for the welding strip on the battery cell to pass through and enter between the two strip limiting baffles.

4. The solar cell busbar welding machine according to claim 3, characterized in that: The welding mechanism includes bonding solar cells and welding solar cells; wherein, The bonding solar cell comprises a through hole on the welding platform located between the two strip-shaped limit baffles and corresponding to the U-shaped notch, a protective ring is embedded and fixedly arranged inside the through hole, a heat conductive sheet is fixedly arranged inside the protective ring, and the top surface of the heat conductive sheet is flush with the top surface of the welding platform; The welding solar cell comprises a U-shaped mounting frame fixedly arranged on the bottom surface of the welding platform, a lifting plate slidably arranged inside the U-shaped mounting frame, an electric soldering iron fixedly arranged in a vertical direction corresponding to the heat conducting plate on the top surface of the lifting plate; an electric push rod fixedly arranged in a vertical direction below the lifting plate inside the U-shaped mounting frame, a transmission end of the electric push rod fixedly arranged on the bottom surface of the lifting plate, and used for driving the lifting plate to perform up and down lifting actions.

5. The solar cell busbar welding machine according to claim 4, characterized in that: It also includes a pressure strip arranged corresponding to the busbar limiting mechanism, and the pressure strip can be placed between the two strip-shaped limiting baffles to press and fit the welding strip on the battery cell tightly with the busbar.

6. The solar cell busbar welding machine according to claim 4, characterized in that: The protective ring is made of high temperature resistant heat insulating material.

7. The solar cell busbar welding machine according to claim 4, characterized in that: The shape of the heat conducting sheet is set to be a cap shape and is made of a material with good thermal conductivity.

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