Photovoltaic module welding device

Abstract

The photovoltaic module welding device comprises a driving part, a feeding part, a welding part, a first bearing part and a second bearing part, and the feeding part is used for providing a bus bar to be welded; the first bearing part is used for bearing a battery string group of a to-be-welded bus bar and enabling a to-be-welded bus bar part of the battery string group to protrude out of the first bearing part, and the second bearing part is used for bearing a part, protruding out of the first bearing part, of the battery string group; the welding part is configured to pick up or release the bus bar and heat the bus bar; and the driving part drives the welding part and the picked bus bar to move to the position above the second bearing part, so that the picked bus bar is tightly pressed on a plurality of welding strips at the end part of the battery string group borne by the second bearing part through the welding part, and the tightly pressed bus bar is heated, so that the overlapped parts of the bus bar and the plurality of welding strips are welded and fixed. According to the photovoltaic module welding device, the bus bar is automatically welded on the welding strip at the end part of the battery string group, and the working efficiency is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic module production equipment, and particularly relates to a photovoltaic module welding device. BACKGROUND

[0002] In the existing photovoltaic module, the bus bar used to connect the battery string in series is generally arranged on the outer side of the battery string, and the bus bar is welded and fixed with the exposed end portion of the battery string, so as to realize the electrical connection of the bus bar and the battery string. Since the bus bar located on the outer side of the battery string occupies a certain space, the overall area of the photovoltaic module is increased, and the light receiving area ratio of the photovoltaic module is reduced. Therefore, the industry currently attempts to weld and fix the bus bar on the welding strip on the battery string, so that the bus bar is directly fixed on the upper surface of the battery string, which requires an automatic welding device to automatically weld the bus bar on the battery string. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a photovoltaic module welding device to solve the above problems in the prior art.

[0004] To achieve this purpose, the application adopts the following technical solutions:

[0005] The application provides a photovoltaic module welding device, which comprises a driving part, a feeding part, a welding part, a first bearing part and a second bearing part, wherein:

[0006] The feeding part is arranged on the outer side of the second bearing part, and the feeding part is configured to provide the bus bar to be welded;

[0007] The first bearing part is configured to bear the battery string with the bus bar to be welded and make the part of the battery string with the bus bar to be welded protrude outward from the first bearing part, the second bearing part is arranged on the outer side of the first bearing part, and the second bearing part is configured to bear the part of the battery string protruding from the first bearing part, the battery string comprises a plurality of matrix-arranged battery strings, the battery string comprises a plurality of battery pieces and a plurality of welding strips for connecting the plurality of battery pieces in series, the plurality of welding strips are arranged in parallel and at intervals and extend along a first horizontal direction;

[0008] The driving end of the driving part is connected to the welding part, and the driving part is configured to drive the welding part to move alternately above the feeding part and the second bearing part, and the welding part is configured to pick up or release the bus bar and heat the bus bar;

[0009] The driving part drives the welding part to move to the feeding part and pick up the bus bar provided by the feeding part through the welding part;

[0010] The driving part drives the welding part to move above the second bearing part, so as to press the picked bus bars on the several welding belts at one end of the battery string group carried by the second bearing part through the welding part, and to heat the pressed bus bars, so that the bus bars are welded and fixed with the overlapping parts of the several welding belts at one end of the battery string group, and the second horizontal direction is perpendicular to the first horizontal direction.

[0011] The welding device for photovoltaic module provided in the application realizes automatic welding of the bus bars on the welding belts at one end of the battery string group, and has high working efficiency. Moreover, the welding part has the functions of picking, pressing and heating welding, has high integration, and has compact overall structure.

[0012] Optionally, the welding part comprises at least one welding mechanism, each welding mechanism comprises a base, a suction assembly and an electromagnetic heating assembly, wherein:

[0013] The driving end of the driving part is connected to the base, the suction assembly and the electromagnetic heating assembly are installed on the base, the suction assembly is configured to suction or release the bus bars to be welded, and the electromagnetic heating assembly is configured to press the bus bars to be welded on the several welding belts at one end of the battery string group carried by the second bearing part and to heat the pressed bus bars.

[0014] By arranging the suction assembly and the electromagnetic heating assembly on the base, the bus bars are picked up or released by using the suction mode, and the picked bus bars are pressed on the several welding belts at one end of the battery string group carried by the second bearing part and then heated by the electromagnetic heating, so that a welding part with compact structure, high working efficiency and stable and reliable operation is provided.

[0015] Optionally, the electromagnetic heating assembly comprises an electromagnetic induction assembly and a pressing piece, wherein:

[0016] The electromagnetic induction assembly is installed on the base, the pressing piece is installed on the bottom of the base and extends along the second horizontal direction, the bus bars to be welded are pressed on the several welding belts at one end of the battery string group carried by the second bearing part through the pressing piece, and the electromagnetic induction assembly is configured to heat the bus bars pressed by the pressing piece by electromagnetic induction.

[0017] By cooperation of the driving part and the pressing piece, the bus bars to be welded are pressed on the several welding belts at one end of the battery string group carried by the second bearing part, and by arranging the electromagnetic induction assembly, the bus bars pressed by the pressing piece are heated by electromagnetic induction, so that an electromagnetic heating assembly with the functions of pressing and heating is provided, and has the advantages of high heating efficiency, energy saving and long service life.

[0018] Optionally, the adsorption assembly comprises an adsorption cavity and a suction component, the adsorption cavity is arranged on the base, the compression member is provided with a plurality of adsorption holes spaced apart in the second horizontal direction, the first end of the adsorption cavity is communicated with the adsorption holes, and the second end of the adsorption cavity is communicated with the suction component; the suction component is configured to suck the air in the adsorption cavity to form a negative pressure area for adsorbing the bus bar at the plurality of adsorption holes.

[0019] By arranging a plurality of adsorption holes spaced apart on the compression member, the suction component sucks the air in the suction passage to adsorb the bus bar on the compression member through the plurality of adsorption holes, so that the compression member has the functions of compression and adsorption, and the adsorption assembly has the advantages of simple structure, small space occupation and high adsorption stability.

[0020] Optionally, the electromagnetic induction assembly comprises a power supply unit, a plurality of cores and a conductive sheet, wherein:

[0021] The base is provided with a first accommodating cavity extending in the second horizontal direction, and the plurality of cores are mounted in the first accommodating cavity in the second horizontal direction; the plurality of cores are arranged in one-to-one correspondence with the overlapping portions of the plurality of welding strips at the ends of the battery string group;

[0022] The first end of the conductive sheet is electrically connected with the power supply unit, the second end of the conductive sheet passes through the winding grooves of the cores in sequence and is electrically connected with the power supply unit, and the power supply unit is configured to supply alternating current to the conductive sheet to form an alternating magnetic field around each core.

[0023] Through the cooperation of the power supply unit, the plurality of cores and the conductive sheet, the alternating magnetic field is formed around each core to simultaneously heat the overlapping portions of the plurality of welding strips at the ends of the corresponding battery string group, thereby providing an electromagnetic induction assembly with high heating efficiency, reasonable layout and good heating effect.

[0024] Optionally, a plurality of adsorption blocks are arranged in the first accommodating cavity in the second horizontal direction, each adsorption block corresponds to an adsorption hole, the adsorption blocks are inserted between adjacent two cores, and the adsorption blocks are provided with air holes, the first end of the air hole is communicated with the adsorption hole, and the second end of the air hole is communicated with the adsorption cavity.

[0025] By arranging a plurality of adsorption blocks, the adsorption blocks play the dual roles of positioning the cores and arranging the air holes, thereby improving the stability and reliability of the assembly of the electromagnetic induction assembly and the compression member.

[0026] Optionally, a plurality of limiting grooves are arranged in the first accommodating cavity, each core corresponds to a limiting groove, and the upper end of the core is inserted into the corresponding limiting groove to limit the core.

[0027] By setting a plurality of limiting grooves and fitting the upper end of each iron core into the corresponding limiting groove, the stability and reliability of the iron core assembly are further improved.

[0028] Optionally, the welding mechanism further comprises a shell fixedly installed on the base, a second accommodating cavity is arranged in the shell, and the power supply unit is arranged in the second accommodating cavity.

[0029] The shell is provided with a temperature measuring member and a cooling fan, the temperature measuring member is configured to detect the temperature in the second accommodating cavity, and the cooling fan is configured to send external air into the second accommodating cavity or to extract air in the second accommodating cavity to the external environment to control the temperature in the second accommodating cavity.

[0030] Through the cooperation of the temperature measuring member and the cooling fan, the temperature in the second accommodating cavity is automatically controlled, so that the power supply unit is always in a suitable environment temperature, ensuring its long-term stable and reliable operation.

[0031] Optionally, a plurality of cooling fins are arranged on the top surface of the base and / or at least one side surface extending in the second horizontal direction.

[0032] By arranging the cooling fins on the base, the heat dissipation performance of the base is improved, and overheating of the base is avoided.

[0033] Optionally, the driving part comprises a first driving member, a horizontal moving seat and a second driving member, wherein:

[0034] The driving end of the first driving member is connected to the horizontal moving seat, and the first driving member is configured to drive the horizontal moving seat to move back and forth in the first horizontal direction;

[0035] The fixed end of the second driving member is installed on the horizontal moving seat, and the driving end of the second driving member is connected to the welding part, and the second driving member is configured to drive the welding part to move up and down.

[0036] Through the cooperation of the first driving member, the horizontal moving seat and the second driving member, the welding part is driven to move horizontally and up and down in the first horizontal direction, so as to be alternately moved to the feeding part and the second carrying part, thereby providing a driving part with simple structure and high working efficiency.

[0037] Optionally, the second carrying part comprises a carrying member for carrying the part of the battery string group protruding from the first carrying part, and the carrying surface of the carrying member is covered with a flexible gasket.

[0038] By arranging the carrying member and covering the flexible gasket on the carrying member, flexible support is achieved for the part of the battery string group protruding from the first carrying part, and hard contact between the carrying member and the battery string group is avoided to cause damage to the battery sheet.

[0039] Optionally, the second bearing part comprises a bearing member and a support base, the bearing member is used to bear the part of the battery string group protruding from the first bearing part, and the bearing member is elastically and floatingly mounted on the support base.

[0040] By arranging the bearing member and floatingly mounting the bearing member on the support base, floating support is achieved for the part of the battery string group protruding from the first bearing part, and hard contact between the bearing member and the battery string group is avoided to prevent damage to the battery piece.

[0041] Optionally, the first bearing part comprises a conveying line arranged along the second horizontal direction, the conveying line is used to receive the battery string group to be welded with the bus bar and convey the battery string group to the second bearing part, so that the part of the battery string group protruding from the conveying line is located on the second bearing part.

[0042] The conveying line is further configured to convey the battery string group after welding with the bus bar to the next process.

[0043] By arranging the first bearing part as the conveying line, the battery string group to be welded with the bus bar is received, the battery string group to be welded with the bus bar received is conveyed to the second bearing part, and the battery string group after welding with the bus bar is conveyed to the next process, thereby providing a first bearing part with simple structure and stable and reliable operation.

[0044] Optionally, the second bearing part comprises a lifting driving member and a bearing member, wherein:

[0045] The bearing member has a bearing surface extending along the second horizontal direction, and the bearing surface of the bearing member is covered with a flexible gasket.

[0046] The driving end of the lifting driving member is connected to the bearing member, and the lifting driving member is configured to drive the bearing member to move to a high position or a low position.

[0047] The lifting driving member drives the bearing member to move to the high position to bear the part of the battery string group protruding from the conveying line by the bearing member.

[0048] The lifting driving member drives the bearing member to move to the low position to avoid the moving path of the battery string group.

[0049] By cooperation of the lifting driving member and the bearing member, the bearing member is driven to move up and down, the part of the battery string group protruding is borne when the bearing member moves to the high position, and welding is implemented in cooperation with the welding part; the bearing member moves to the low position to avoid the moving path of the battery string group, so as to facilitate the battery string group to be welded with the bus bar to be fed into the second bearing part and the battery string group after welding with the bus bar to be fed from the second bearing part to the next process. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 is a schematic diagram of the three-dimensional structure of the photovoltaic module welding device provided by the embodiment of the present application;

[0051] Figure 2 is a top view schematic diagram of a cell string group of a photovoltaic module welding device provided by an embodiment of the present application;

[0052] Figure 3 is a three-dimensional structure schematic diagram of a welding mechanism of a photovoltaic module welding device provided by an embodiment of the present application;

[0053] Figure 4 is an exploded view of an electromagnetic induction assembly of a photovoltaic module welding device provided by an embodiment of the present application;

[0054] Figure 5 is an internal structure schematic diagram of a welding mechanism of a photovoltaic module welding device provided by an embodiment of the present application;

[0055] Figure 6 is a structure schematic diagram of a driving part and a welding part of a photovoltaic module welding device provided by an embodiment of the present application;

[0056] Figure 7 is a side view schematic diagram of a photovoltaic module welding device provided by an embodiment of the present application.

[0057] Figures 1 to 7 The following reference signs are included in the detailed description:

[0058] Driving part 10: first driving piece 11, transverse moving seat 12, second driving piece 13;

[0059] Feeding part 20;

[0060] Welding part 30: welding mechanism 31, base 32, first accommodating cavity 320, adsorption block 321, limiting groove 322, adsorption assembly 33, electromagnetic heating assembly 34, electromagnetic induction assembly 340, power supply unit 3400, iron core 3401, conductive sheet 3402, pressing piece 341, adsorption hole 342, heat dissipation sheet 35;

[0061] Second bearing part 40: lifting driving piece 41, bearing piece 42, support seat 43;

[0062] Bus bar 50;

[0063] Cell string group 60: cell string 61, cell sheet 610, welding strip 611;

[0064] Housing 70: second accommodating cavity 71, temperature measuring piece 72, heat dissipation fan 73. DETAILED DESCRIPTION

[0065] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0066] The busbar used to connect the battery string in series in the existing photovoltaic module is generally arranged on the outer side of the battery string, and the busbar is welded and fixed with the exposed end portion of the battery string to realize the electrical connection of the busbar and the battery string. Since the busbar located on the outer side of the battery string occupies a certain space, the overall area of the photovoltaic module is increased, and the light receiving area ratio of the photovoltaic module is reduced. Therefore, the industry currently attempts to weld and fix the busbar on the welding strip on the battery string, so that the busbar is directly fixed on the upper surface of the battery string, which requires an automatic welding device to automatically weld the busbar on the battery string.

[0067] Therefore, the present application provides a photovoltaic module welding device, please refer to Figure 1 and Figure 2 The photovoltaic module welding device provided by the embodiment of the present application includes a driving part 10, a feeding part 20, a welding part 30, a first bearing part (not shown in the figure) and a second bearing part 40. The feeding part 20 is arranged on the outer side of the second bearing part 40, and the feeding part 20 is configured to provide the busbar 50 to be welded. The first bearing part is configured to bear the battery string 60 to be welded with the busbar 50 and make the part of the battery string 60 to be welded with the busbar 50 protrude outwardly from the first bearing part. The second bearing part 40 is arranged on the outer side of the first bearing part, and the second bearing part 40 is configured to bear the part of the battery string 60 protruding from the first bearing part. The battery string 60 includes a plurality of matrix-arranged battery strings 61, and the battery string 61 includes a plurality of battery pieces 610 and a plurality of welding strips 611 for connecting the plurality of battery pieces 610 in series. The plurality of welding strips 611 are arranged in parallel and spaced apart and extend along a first horizontal direction (X direction in the figure). Figure 1 The driving end of the driving part 10 is connected to the welding part 30, and the driving part 10 is configured to drive the welding part 30 to move alternately above the feeding part 20 and the second bearing part 40. The welding part 30 is configured to pick up or release the busbar 50 and heat the busbar 50. The driving part 10 drives the welding part 30 to move to the feeding part 20 and pick up the busbar 50 provided by the feeding part 20 through the welding part 30. The driving part 10 drives the welding part 30 to move above the second bearing part 40, so as to press the picked-up busbar 50 on the plurality of welding strips 611 of the end portion of the battery string 60 borne by the second bearing part 40 along a second horizontal direction (Y direction in the figure) through the welding part 30 and heat the pressed busbar 50, so that the busbar 50 is welded and fixed with the overlapping part of the plurality of welding strips 611 of the end portion of the battery string 60. The second horizontal direction is perpendicular to the first horizontal direction. Figure 1

[0068] ​It should be noted that: the battery string group 60 includes at least two battery strings 61, each battery string 61 includes a plurality of battery pieces 610 and a plurality of welding strips 611 for connecting the plurality of battery pieces 610 in series, the plurality of welding strips 611 are arranged in parallel and spaced apart and extend along the first horizontal direction, the bus bar 50 is arranged at one end of the battery string group 60, and the welding strips 611 on the end portions of the adjacent two battery strings 61 are welded and fixed with the bus bar 50 to realize the electrical connection of the bus bar 50 and the adjacent two battery strings 61.

[0069] It can be seen that by driving the welding part 30 to pick up the bus bar 50 to be welded and press the picked-up bus bar 50 on the plurality of welding strips 611 at one end of the battery string group 60 carried by the second carrying part 40, and then welding each bus bar 50 and the overlapping part of the corresponding welding strip 611 by the welding part 30, the bus bar 50 is automatically welded on the welding strip 611 at the end of the battery string group 60, which is high in working efficiency; and the welding part 30 has the functions of picking up, pressing and heating and welding, is high in integration and compact in overall structure.

[0070] Please refer to Figures 1 to 3 As an embodiment, the welding part 30 includes at least one welding mechanism 31, each welding mechanism 31 includes a base 32, a suction assembly 33 and an electromagnetic heating assembly 34, the driving end of the driving part 10 is connected to the base 32, the suction assembly 33 and the electromagnetic heating assembly 34 are installed on the base 32, the suction assembly 33 is configured to suction or release the bus bar 50 to be welded, and the electromagnetic heating assembly 34 is configured to press the bus bar 50 to be welded on the plurality of welding strips 611 at the end of the battery string group 60 carried by the second carrying part 40 and to perform electromagnetic heating on the pressed bus bar 50.

[0071] It should be noted that: the welding part 30 includes three welding mechanisms 31, the suction assembly 33 of each welding mechanism 31 is configured to suction or release one bus bar 50, the three welding mechanisms 31 are arranged side by side along the second horizontal direction, and the welding part 30 can suction three bus bars 50 at a time to simultaneously weld the three bus bars 50 and the welding strips 611 at the end of the three battery strings 61 of the battery string group 60.

[0072] It can be seen that by arranging the suction assembly 33 and the electromagnetic heating assembly 34 on the base 32, the suction assembly 33 is used to pick up or release the bus bar 50 and press the picked-up bus bar 50 on the plurality of welding strips 611 at the end of the battery string group 60 carried by the second carrying part 40, and then perform electromagnetic heating, thereby providing a welding part 30 which is compact in structure, high in working efficiency and stable and reliable in operation.

[0073] Please refer to Figures 1 to 4As shown, as an implementation form, the electromagnetic heating assembly 34 comprises an electromagnetic induction assembly 340 and a pressing member 341, the electromagnetic induction assembly 340 is mounted on the base 32, the pressing member 341 is mounted on the bottom of the base 32 and extends along the second horizontal direction, the bus bar 50 to be welded is pressed on the plurality of welding strips 611 at the end of the battery string group 60 carried by the second carrying part 40 through the pressing member 341, and the electromagnetic induction assembly 340 is configured to implement electromagnetic heating on the bus bar 50 pressed by the pressing member 341.

[0074] Specifically, the pressing member 341 is a ceramic gasket with good heat conduction performance.

[0075] It can be seen that through the cooperation of the driving part 10 and the pressing member 341, the bus bar 50 to be welded is pressed on the plurality of welding strips 611 at the end of the battery string group 60 carried by the second carrying part 40, and through the arrangement of the electromagnetic induction assembly 34, electromagnetic heating is implemented on the bus bar 50 pressed by the pressing member 341, thereby providing an electromagnetic heating assembly 34 with the functions of pressing and heating, and having the advantages of high heating efficiency, energy saving and long service life.

[0076] As an implementation form, the adsorption assembly 33 comprises an adsorption cavity and a suction component, the adsorption cavity is arranged on the base 32, a plurality of adsorption holes 342 are arranged on the pressing member 341 and spaced apart along the second horizontal direction, a first end of the adsorption cavity is communicated with the adsorption holes 342, and a second end of the adsorption cavity is communicated with the suction component, and the suction component is configured to suck air in the adsorption cavity to form a negative pressure area for adsorbing the bus bar 50 at the plurality of adsorption holes 342.

[0077] It can be seen that through the arrangement of the plurality of adsorption holes 342 on the pressing member 341 and the suction of the suction component on the air in the adsorption cavity, the bus bar 50 is adsorbed on the pressing member 341 through the plurality of adsorption holes 342, so that the pressing member 341 has the functions of pressing and adsorbing, and at the same time, uniform and stable adsorption of the bus bar 50 is realized, thereby providing an adsorption assembly 33 with the advantages of simple structure, small space occupation and high adsorption stability.

[0078] Please refer to Figures 2 to 5As shown, as an embodiment, the electromagnetic induction assembly 340 comprises a power supply unit 3400, a plurality of cores 3401 and a conductive sheet 3402, the base 32 is provided with a first accommodating cavity 320 extending along the second horizontal direction, the plurality of cores 3401 are installed in the first accommodating cavity 320 along the second horizontal direction, and the plurality of cores 3401 are provided in one-to-one correspondence with the overlapping portions of the plurality of welding strips 611 at the ends of the bus bar 50 and the battery string group 60; the first end of the conductive sheet 3402 is electrically connected with the power supply unit 3400, and the second end of the conductive sheet sequentially passes through the winding grooves of the cores 3401 and is electrically connected with the power supply unit 3400, and the power supply unit 3400 is configured to supply alternating current to the conductive sheet 3402 to form an alternating magnetic field around each core 3401.

[0079] Specifically, the core 3401 is in the shape of "E" and is provided with an opening downward, and two winding grooves with openings downward are formed on each core 3401.

[0080] Specifically, the conductive sheet 3402 is a flat copper bar.

[0081] It can be seen that through the cooperation of the power supply unit 3400, the plurality of cores 3401 and the conductive sheet 3402, an alternating magnetic field is formed around each core 3401 to simultaneously heat the overlapping portions of the plurality of welding strips 611 at the ends of each battery string group 60, thereby providing an electromagnetic induction assembly 34 with high heating efficiency, reasonable layout and good heating effect.

[0082] As an embodiment, a plurality of adsorption blocks 321 are provided in the first accommodating cavity 320 along the second horizontal direction, each adsorption block 321 corresponds to an adsorption hole 342, the adsorption block 321 is inserted between the adjacent two cores 3401, and the adsorption block 321 is provided with a ventilation hole, the first end of the ventilation hole is communicated with the adsorption hole 342, and the second end of the ventilation hole is communicated with the adsorption cavity.

[0083] It can be seen that through the provision of a plurality of adsorption blocks 321, the adsorption block 321 plays a dual role of positioning the core 3401 and providing the ventilation hole, thereby improving the stability and reliability of the assembly of the electromagnetic induction assembly 34 and the pressing member 341.

[0084] As an embodiment, a plurality of limiting grooves 322 are provided in the first accommodating cavity 320, each core 3401 corresponds to a limiting groove 322, and the upper end of the core 3401 is inserted into the corresponding limiting groove 322 to limit the core 3401.

[0085] It can be seen that through the provision of a plurality of limiting grooves 322 and the insertion of the upper end of each core 3401 into the corresponding limiting groove 322, the stability and reliability of the assembly of the core 3401 are further improved.

[0086] As an implementation form, the welding mechanism 31 further comprises a shell 70 fixedly installed on the base 32, a second accommodating cavity 71 is arranged in the shell 70, and the power supply unit 3400 is arranged in the second accommodating cavity 71; a temperature measuring member 72 and a heat dissipation fan 73 are installed on the shell 70, the temperature measuring member 72 is configured to detect the temperature in the second accommodating cavity 71, and the heat dissipation fan 73 is configured to send external air into the second accommodating cavity 71 or to extract air in the second accommodating cavity 71 to the external environment to control the temperature in the second accommodating cavity 71.

[0087] Specifically, the temperature measuring member 72 is arranged in the second accommodating cavity 71.

[0088] Specifically, the heat dissipation fan 73 is arranged at one end or both ends of the second accommodating cavity 71 along the length direction thereof.

[0089] It can be seen that through the cooperation of the temperature measuring member 72 and the heat dissipation fan 73, the temperature in the second accommodating cavity 71 is automatically controlled, so that the power supply unit 3400 is always in a suitable environment temperature, thereby ensuring long-term stable and reliable operation.

[0090] As an implementation form, a plurality of cooling fins 35 are arranged on the top surface of the base 32 and / or at least one side surface extending in the second horizontal direction.

[0091] It can be seen that by arranging the cooling fins 35 on the base, the heat dissipation performance of the base 32 is improved, and overheating of the base 32 is avoided.

[0092] Please refer to Figure 1 and Figure 6 As an implementation form, the driving part 10 comprises a first driving member 11, a transverse seat 12 and a second driving member 13, the driving end of the first driving member 11 is connected to the transverse seat 12, and the first driving member 11 is configured to drive the transverse seat 12 to reciprocate along the first horizontal direction; the fixed end of the second driving member 13 is installed on the transverse seat 12, and the driving end of the second driving member 13 is connected to the welding part 30, and the second driving member 13 is configured to drive the welding part 30 to ascend and descend.

[0093] Specifically, the first driving member 11 comprises a first motor 110, a gear 111 and a rack 112, the transverse seat 12 is movably installed on the equipment rack (not shown in the figure) along the first horizontal direction through a sliding guide pair, and the rack 112 is fixedly installed on the equipment rack along the first horizontal direction; the fixed end of the first motor 110 is installed on the transverse seat 12, the gear 111 is installed on the rotating shaft of the first motor 110, and the gear 111 is engaged with the rack 112.

[0094] Specifically, the second driving member 13 is an electric cylinder installed vertically on the transverse seat 12.

[0095] It can be seen that through the cooperation of the first driving member 11, the transverse seat 12 and the second driving member 13, the driving welding part 30 is realized to move and lift along the first horizontal direction, so as to alternately move the welding part 30 to the feeding part 20 and the second bearing part 40, and a driving part 10 with simple structure and high working efficiency is provided.

[0096] Please refer to Figure 2 and Figure 7 As an embodiment, the second bearing part 40 includes a bearing member 42, which is used to bear the part of the battery string group 60 protruding from the first bearing part, and a flexible gasket is covered on the bearing surface of the bearing member 42.

[0097] It can be seen that through the setting of the flexible gasket, flexible support is realized for the part of the battery string group 60 protruding from the first bearing part, and hard contact between the bearing member 40 and the battery string group 60 is avoided to cause damage to the battery sheet 610.

[0098] As an embodiment, the second bearing part 40 includes a bearing member 42 and a support seat 43, the bearing member 42 is used to bear the part of the battery string group 60 protruding from the first bearing part, and the bearing member 42 is elastically and floatingly installed on the support seat 43.

[0099] Specifically, a plurality of elastic members are installed between the bearing member 42 and the support seat 43, the first end of the elastic member abuts on the top surface of the support seat 43, and the second end of the elastic member abuts on the bottom surface of the bearing member 42.

[0100] It can be seen that through the setting of the bearing member 42 and the floating installation of the bearing member 42 on the support seat 43, floating support is realized for the part of the battery string group 60 protruding from the first bearing part, and hard contact between the bearing member 42 and the battery string group 60 is avoided to cause damage to the battery sheet 610.

[0101] As an embodiment, the first bearing part includes a conveying line (not shown in the figure) arranged along the second horizontal direction, the conveying line is used to receive the battery string group 60 to be welded with the busbar 50, and to convey the battery string group 60 to the second bearing part 40, so that the part of the battery string group 60 protruding from the conveying line is located on the second bearing part 40; the conveying line is also configured to convey the battery string group 60 after the welding with the busbar 50 to the next process.

[0102] It can be seen that through the setting of the first bearing part as the conveying line, the battery string group 60 to be welded with the busbar 50 is received, the received battery string group 60 to be welded with the busbar 50 is conveyed to the second bearing part 40, and the battery string group 60 after the welding with the busbar 50 is conveyed to the next process, and a first bearing part with simple structure and stable and reliable operation is provided.

[0103] As an implementation, the second bearing part 40 comprises a lifting driving part 41 and a bearing part 42, the bearing part 42 has a bearing surface extending along the second horizontal direction, and the bearing surface of the bearing part 42 is covered with a flexible gasket; the driving end of the lifting driving part 41 is connected to the bearing part 42, and the lifting driving part 41 is configured to drive the bearing part 42 to move to a high position or a low position; the lifting driving part 41 drives the bearing part 42 to move to the high position, so that the bearing part 42 bears the part of the battery string group 60 protruding from the conveying line; the lifting driving part 41 drives the bearing part 42 to move to the low position, so that the bearing part 42 avoids the moving path of the battery string group 60.

[0104] Specifically, the lifting driving part 41 is a pneumatic cylinder.

[0105] It can be seen that, through the cooperation of the lifting driving part 41 and the bearing part 42, the bearing part 42 is driven to move up and down, and when the bearing part 42 moves to the high position, the bearing part 42 can bear the protruding part of the battery string group 60 and cooperate with the welding part 30 to implement welding; when the bearing part 42 moves to the low position, the bearing part 42 can avoid the moving path of the battery string group 60, so that the battery string group 60 to be welded is conveniently fed into the second bearing part 40, and the battery string group 60 after the welding busbar 50 is welded is conveniently fed from the second bearing part 40 to the next process.

[0106] In addition, the feeding part 20 in the embodiment of the present application is used to pull out the busbar of a predetermined length from the material roll through a traction mechanism, cut the busbar of the predetermined length through a cutting mechanism, then pull the busbar of the predetermined length to the transfer platform through the traction mechanism, and wait for the carrying part to pick up, Figure 1 The component pointed to by the reference sign 20 is the transfer platform of the feeding part 20. The feeding part 20 belongs to the conventional technology in the field and does not need to be improved creatively, so it will not be described here.

[0107] The general working principle of the photovoltaic module welding device provided in the embodiment of the present application is as follows:

[0108] S1, the first bearing part feeds the battery string group 30 to be welded to the second bearing part 40, so that the part of the battery string group 30 protruding from the conveying line is located above the second bearing part 40;

[0109] S2, the lifting driving part 41 drives the bearing part 42 to move from the low position to the high position, so that the bearing part 42 bears the part of the battery string group 30 protruding from the conveying line;

[0110] S3, the welding part 30 moves to the feeding part 20, picks up the busbar 50 provided by the feeding part 20, and then moves the picked-up busbar 50 above the second bearing part 40, and then presses the picked-up busbar 50 along the second horizontal direction on the several welding strips 611 of the part of the battery string group 60 borne by the second bearing part 40;

[0111] S4, the power supply unit 3400 supplies power to the plurality of iron cores 3401, and simultaneously performs electromagnetic heating on the overlapping portions of the several welding strips 611 at the end of the corresponding battery string group 60.

[0112] The photovoltaic module welding device provided by the embodiment of the present application has the following advantages:

[0113] 1) The bus bar 50 is automatically welded on the welding strip 611 at the end of the battery string group 60, and the working efficiency is high;

[0114] 2) The welding part 30 has the functions of picking up, pressing and heating welding, and has high integration and compact overall structure;

[0115] 3) By setting the electromagnetic induction assembly 34, the bus bar 50 pressed by the pressing piece 341 is subjected to electromagnetic heating, which has the advantages of high heating efficiency, energy saving and long service life;

[0116] 4) By setting the plurality of adsorption blocks 321, the adsorption block 321 plays the dual role of positioning the iron core 3401 and setting the air hole, and improves the stability and reliability of the assembly of the electromagnetic induction assembly 34 and the pressing piece 341;

[0117] 5) By setting the cooling fan 73 and the cooling fin 35, the electromagnetic heating assembly 34 has good heat dissipation performance, and ensures long-term stable and reliable work.

[0118] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited by the above examples. Various changes and changes can be made without departing from the spirit and scope of the present application, and these changes and changes fall within the scope of the present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module welding apparatus, characterized by, The photovoltaic module welding device comprises a driving part, a feeding part, a welding part, a first bearing part and a second bearing part, wherein: The feeding part is arranged outside the second bearing part, and is configured to provide the bus bar to be welded; The first bearing part is configured to bear the battery string group with the bus bar to be welded and make the part of the battery string group with the bus bar to be welded protrude outwardly from the first bearing part, the second bearing part is arranged outside the first bearing part, and is configured to bear the part of the battery string group protruding from the first bearing part, the battery string group comprises a plurality of matrix-arranged battery strings, each battery string comprises a plurality of battery pieces and a plurality of welding bands for connecting the battery pieces in series, and the plurality of welding bands are arranged in parallel and extend along a first horizontal direction; The driving end of the driving part is connected to the welding part, and the driving part is configured to drive the welding part to move alternately above the feeding part and the second bearing part, and the welding part is configured to pick up or release the bus bar and heat the bus bar; The driving part drives the welding part to move to the feeding part and pick up the bus bar provided by the feeding part through the welding part; The driving part drives the welding part to move above the second bearing part, so as to press the picked-up bus bar on the plurality of welding bands at the end of the battery string group borne by the second bearing part along a second horizontal direction through the welding part, and heat the pressed bus bar, so that the bus bar is welded and fixed with the overlapping part of the plurality of welding bands at the end of the battery string group, and the second horizontal direction is perpendicular to the first horizontal direction.

2. The photovoltaic module welding apparatus of claim 1, wherein, The welding part comprises at least one welding mechanism, and each welding mechanism comprises a base, a suction assembly and an electromagnetic heating assembly, wherein: The driving end of the driving part is connected to the base, the suction assembly and the electromagnetic heating assembly are mounted on the base, the suction assembly is configured to adsorb or release the bus bar to be welded, and the electromagnetic heating assembly is configured to press the bus bar to be welded on the plurality of welding bands at the end of the battery string group borne by the second bearing part and heat the pressed bus bar by electromagnetic heating.

3. The photovoltaic module welding apparatus of claim 2, wherein, The electromagnetic heating assembly comprises an electromagnetic induction assembly and a pressing piece, wherein: The electromagnetic induction assembly is mounted on the base, the pressing piece is mounted on the bottom of the base and extends along the second horizontal direction, the bus bar to be welded is pressed on the plurality of welding bands at the end of the battery string group borne by the second bearing part through the pressing piece, and the electromagnetic induction assembly is configured to heat the bus bar pressed by the pressing piece by electromagnetic heating.

4. The photovoltaic module welding apparatus of claim 3, wherein, The suction assembly comprises a suction cavity and a suction component, the suction cavity is arranged on the base, a plurality of suction holes are arranged on the pressing piece and spaced apart along the second horizontal direction, a first end of the suction cavity is connected to the suction holes, and a second end of the suction cavity is connected to the suction component, and the suction component is configured to suck air in the suction cavity to form a negative pressure area for adsorbing the bus bar at the plurality of suction holes.

5. The photovoltaic module welding apparatus of claim 4, wherein, The electromagnetic induction assembly comprises a power supply unit, a plurality of iron cores and a conductive sheet, wherein: The base is internally provided with a first accommodating cavity extending along the second horizontal direction, and the plurality of iron cores are installed in the first accommodating cavity at intervals along the second horizontal direction, and the plurality of iron cores are arranged in one-to-one correspondence with the overlapping portions of the bus bar and the plurality of welding strips at the ends of the battery string group; The first end of the conductive sheet is electrically connected with the power supply unit, and the second end of the conductive sheet is sequentially connected with the power supply unit after passing through the winding slots of each iron core, and the power supply unit is configured to supply alternating current to the conductive sheet to form an alternating magnetic field around each iron core.

6. The photovoltaic module welding apparatus of claim 5, wherein, A plurality of adsorption blocks are arranged at intervals in the first accommodating cavity along the second horizontal direction, each adsorption block corresponds to an adsorption hole, the adsorption block is inserted between two adjacent iron cores, and a ventilation hole is formed in the adsorption block, the first end of the ventilation hole is communicated with the adsorption hole, and the second end of the ventilation hole is communicated with the adsorption cavity.

7. The photovoltaic module welding apparatus of claim 5, wherein, A plurality of limiting grooves are arranged in the first accommodating cavity, each iron core corresponds to a limiting groove, and the upper end of the iron core is inserted into the corresponding limiting groove to limit the iron core.

8. The photovoltaic module welding apparatus of claim 5, wherein, The welding mechanism further comprises a shell fixedly installed on the base, and the shell is internally provided with a second accommodating cavity, and the power supply unit is arranged in the second accommodating cavity; A temperature measuring device and a cooling fan are installed on the shell, the temperature measuring device is configured to detect the temperature in the second accommodating cavity, and the cooling fan is configured to send external air into the second accommodating cavity or to exhaust air in the second accommodating cavity to the external environment to control the temperature in the second accommodating cavity.

9. The photovoltaic module welding apparatus of claim 2, wherein, A plurality of cooling fins are arranged at intervals on the top surface of the base and / or at least one side surface extending along the second horizontal direction.

10. The photovoltaic module welding apparatus of claim 1, wherein, The driving part comprises a first driving part, a transverse moving seat and a second driving part, wherein: The driving end of the first driving part is connected with the transverse moving seat, and the first driving part is configured to drive the transverse moving seat to move back and forth along the first horizontal direction; The fixed end of the second driving part is installed on the transverse moving seat, the driving end of the second driving part is connected with the welding part, and the second driving part is configured to drive the welding part to move up and down.

11. The photovoltaic module welding apparatus of claim 1, wherein, The second bearing part comprises a bearing part, and the bearing part is used to bear the part of the battery string group protruding from the first bearing part, and a flexible gasket is covered on the bearing surface of the bearing part.

12. The photovoltaic module welding apparatus of claim 1, wherein, The second bearing part comprises a bearing part and a support seat, the bearing part is used to bear the part of the battery string group protruding from the first bearing part, and the bearing part is elastically and floatingly installed on the support seat.

13. The photovoltaic module welding apparatus of claim 1, wherein, The first bearing part comprises a conveying line arranged along the second horizontal direction, the conveying line is used to receive the battery string group with the bus bar to be welded, and convey the battery string group to the second bearing part, so that the part of the battery string group protruding from the conveying line is located on the second bearing part; The conveying line is also configured to convey the battery string group after welding the bus bar to the next process.

14. The photovoltaic module welding apparatus of claim 13, wherein, The second bearing part comprises a lifting driving element and a bearing element, wherein: The bearing element has a bearing surface extending along the second horizontal direction, and the bearing surface of the bearing element is covered with a flexible gasket; The driving end of the lifting driving element is connected to the bearing element, and the lifting driving element is configured to drive the bearing element to move to a high position or a low position; The lifting driving element drives the bearing element to move to the high position, so that the battery string group is supported by the bearing element and protrudes from the conveying line; The lifting driving element drives the bearing element to move to the low position, so that the bearing element avoids the moving path of the battery string group.

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