Battery cell series welding and bus bar welding integrated machine

Abstract

The present invention relates to an integrated welding machine for battery string and bus bar, which includes a battery string forming part, a battery string conveying part, a battery string bearing part, a bus bar conveying part and a bus bar welding part; the battery string forming part welds battery cells and welding tapes into a battery string; the battery string conveying part conveys the battery string to the battery string bearing part; the bus bar conveying part conveys the bus bar to the battery string bearing part and stacks the bus bar on the battery string; the bus bar welding part welds the bus bar on the battery string; or, the bus bar conveying part conveys the bus bar to the battery string bearing part; the battery string conveying part conveys the battery string to the battery string bearing part and stacks the battery string on the bus bar; the bus bar welding part welds the battery string on the bus bar. After the battery cells are welded into a string, by completing the on-line welding of the bus bar on the battery string bearing part, the battery cell string welding and the bus bar welding are integrated and completed in one device, reducing the volume of the device and the cost of the device.

Description

Technical Field

[0001] The present invention relates to photovoltaic cell production equipment, and more particularly to a battery string soldering and bus bar welding integrated machine. Background Art

[0002] The traditional processing sequence of photovoltaic cell modules is as follows: first, a string welding machine is used to solder battery cells into a battery string; then, the string welding machine conveys the battery string to a layout machine, and the layout machine arranges the battery strings on a glass backplane in a predetermined order; then, the glass backplane carrying the battery strings is conveyed to the position of a stack welding machine, and the stack welding machine grabs the battery strings and welds bus bars at the ends of the battery strings.

[0003] This traditional processing process requires a dedicated stack welding machine station, resulting in a large space occupied by the entire photovoltaic cell production equipment, which is not conducive to the layout of equipment at the production site. Summary of the Invention

[0004] In view of the problem that the existing photovoltaic cell production equipment occupies a large space, the present invention provides a battery string soldering and bus bar welding integrated machine that can reduce the volume of the equipment.

[0005] The technical solution of the present invention is as follows: a battery string soldering and bus bar welding integrated machine, including a battery string forming part, a battery string conveying part, a battery string carrying part, a bus bar conveying part, and a bus bar welding part; wherein:

[0006] The battery string forming part is configured to stack battery cells and welding tapes in a predetermined order and then weld them into a battery string;

[0007] The battery string conveying part is configured to convey the battery string to the battery string carrying part; the bus bar conveying part is configured to convey the bus bar to the battery string carrying part and stack the bus bar at a predetermined position on the battery string; the bus bar welding part is configured to weld the bus bar on the battery string.

[0008] Alternatively, the bus bar conveying part is configured to convey the bus bar to a predetermined position on the battery string carrying part; the battery string conveying part is configured to convey the battery string to the battery string carrying part and stack the battery string on the bus bar; the bus bar welding part is configured to weld the battery string on the bus bar.

[0009] After the battery cells are welded into a string, by conveying the battery string and the bus bar to the battery string carrying part and completing the on-line welding of the bus bar on the battery string carrying part, the battery string soldering and the bus bar welding are integrated and completed in one device, saving the separate stack welding device used in the subsequent process of the prior art, reducing the volume of the device, saving the space occupied by the entire device, and reducing the equipment cost.

[0010] Further, the battery string forming part includes a battery sheet feeding device, a solder tape feeding device, a welding conveying device, and a battery string welding device; the battery sheet feeding device and the solder tape feeding device are configured to stack battery sheets and solder tapes on the welding conveying device in a predetermined order; the welding conveying device is configured to convey the stacked solder tapes and battery sheets to the battery string welding device; the battery string welding device is configured to weld the battery sheets and solder tapes into a battery string.

[0011] The battery sheet feeding device and the solder tape feeding device respectively convey the battery sheets and solder tapes to the welding conveying device, and the battery string welding device is used to weld the battery sheets and solder tapes into a battery string.

[0012] Further, the battery string conveying part includes a battery string conveying mechanism and a battery string handling mechanism; the battery string conveying mechanism is configured to carry and convey the battery string, and the battery string handling mechanism is configured to move the battery string on the battery string conveying mechanism to the battery string bearing part.

[0013] The battery string handling mechanism moves the battery string on the battery string conveying mechanism to the battery string bearing part to realize the transfer of the battery string.

[0014] Further, the bus bar conveying part includes a bus bar bearing platform and a bus bar handling mechanism; the bus bar bearing platform is configured to carry the bus bar, and the bus bar handling mechanism is configured to move the bus bar on the bus bar bearing platform to the battery string bearing part.

[0015] The bus bar handling mechanism moves the bus bar on the bus bar bearing platform to the battery string bearing part to realize the feeding of the bus bar.

[0016] Further, the bus bar handling mechanism includes a slide rail and a plurality of adsorption mechanisms slidably engaged with the slide rail, and each adsorption mechanism is configured to adsorb a bus bar.

[0017] The bus bar is adsorbed by the adsorption mechanism, and the slide rail guides the adsorption mechanism, so that the smooth feeding of the bus bar can be realized.

[0018] Further, the bus bar conveying part further includes a bus bar feeding mechanism, a bus bar traction mechanism, and a bus bar cutting mechanism. The bus bar cutting mechanism is installed between the bus bar feeding mechanism and the bus bar traction mechanism; the bus bar feeding mechanism is configured to store the bus bar in a roll, the bus bar traction mechanism is configured to traction the bus bar stored in the bus bar feeding mechanism to the bus bar bearing platform, and the bus bar cutting mechanism is configured to cut the bus bar pulled out by the bus bar traction mechanism.

[0019] The rolled busbars are stored by the busbar feeding mechanism, the busbars stored in the busbar feeding mechanism are pulled to the busbar bearing table by the busbar traction mechanism, and the busbars pulled out by the busbar traction mechanism are cut by the busbar cutting mechanism. The qualified busbars can be produced near the busbar bearing table, improving the production efficiency.

[0020] Further, the busbar traction mechanism includes a chuck, a chuck driving mechanism and a chuck transverse movement mechanism. A plurality of chucks are installed on the movable part of the chuck driving mechanism, and the chuck driving mechanism is installed on the chuck transverse movement mechanism. The chuck driving mechanism is used to drive the chuck to clamp the free end of the busbar, and the chuck transverse movement mechanism is used to drive the chuck driving mechanism to move so that the busbar is placed on the busbar bearing table.

[0021] The chuck driving mechanism drives the chuck to clamp the free end of the busbar, and the chuck transverse movement mechanism drives the chuck driving mechanism to move so that the busbar is placed on the busbar bearing table, realizing the stable and reliable transfer of the busbar to the busbar bearing table.

[0022] Further, the busbar conveying part further includes a busbar pressing mechanism. The busbar pressing mechanism is installed between the busbar feeding mechanism and the busbar cutting mechanism, and the busbar pressing mechanism is configured to press the busbar when the busbar is cut.

[0023] By configuring the busbar pressing mechanism to press the busbar when the busbar is cut, the busbar can be prevented from jumping, which affects the quality of the busbar.

[0024] Further, the busbar welding part includes a welding bracket, a welding head and a rotating mechanism. The welding head is installed on the welding bracket, and the welding bracket is installed on the rotating mechanism. The rotating mechanism is configured to drive the welding bracket to rotate so that the welding head moves to the busbar welding position.

[0025] By driving the welding bracket to rotate by the rotating mechanism, when the welding head works, it is moved to the busbar welding position, and when the welding head is not required to weld, the welding head is moved away, which can avoid the welding head touching the battery string or the busbar, thus affecting the welding quality of the busbar.

[0026] Further, when there is a string of battery strings on the battery string bearing part, two groups of welding heads are configured, and the two groups of welding heads are respectively arranged corresponding to the positions of welding the busbars at both ends of a string of battery strings;

[0027] Or, when there are two strings of battery strings arranged along the length direction of the battery string on the battery string bearing part, three groups of welding heads are configured, and the three groups of welding heads are respectively arranged corresponding to the positions of welding the busbars at both ends of the two strings of battery strings and the adjacent positions.

[0028] By configuring different numbers of welding heads, the bus bar welding part can be applied to welding bus bars at both ends of a long string of battery strings and can also be applied to welding bus bars at both ends of two short battery strings arranged in sequence, improving the applicability of the equipment. Brief Description of the Drawings

[0029] Figure 1 Schematic perspective view of an alternative embodiment of the present invention.

[0030] Figure 2 is Figure 1 top view of.

[0031] Figure 3 is Figure 1 schematic perspective view of the bus bar handling mechanism in.

[0032] Figure 4 is Figure 1 schematic perspective view of the bus bar traction mechanism in.

[0033] Figure 5 is Figure 4 perspective view from another angle of.

[0034] Figure 6 is Figure 4 front view of.

[0035] Figure 7 is Figure 1 schematic perspective view of the bus bar welding part in.

[0036] Figures 1 to 7 In, it includes:

[0037] Integrated machine for series welding of bus bars on battery cells 1;

[0038] Frame 10;

[0039] Battery string conveying part 20, battery string conveying mechanism 21;

[0040] Battery string bearing part 30, battery string bearing plate 31;

[0041] Bus bar conveying part 40, bus bar bearing table 41, bus bar handling mechanism 42, slide rail 421, adsorption mechanism 422, bus bar feeding mechanism 43, bus bar traction mechanism 44, chuck 441, chuck driving mechanism 442, chuck transverse movement mechanism 443, bus bar cutting mechanism 45, bus bar pressing mechanism 46;

[0042] Bus bar welding part 50, welding bracket 51, welding head 52, rotating mechanism 53. Detailed Description of the Invention

[0043] To make the above objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] As Figure 1 , Figure 2 shown, the present invention is a battery cell series welding and bus bar welding integrated machine 1, which is used to complete the welding of battery strings and the welding of bus bars in one device. The products discharged from this device are directly sent to the subsequent layout machine for layout.

[0045] The battery cell series welding and bus bar welding integrated machine 1 includes a battery string forming part, a battery string conveying part 20, a battery string carrying part 30, a bus bar conveying part 40, and a bus bar welding part 50; the above components are all installed on the frame 10.

[0046] There are two welding methods between the bus bar and the battery string as follows.

[0047] The first method: The battery string forming part is configured to stack battery cells and welding tapes in a predetermined order and then weld them into a battery string; the battery string conveying part 20 is configured to convey the battery string to the battery string carrying part 30; the bus bar conveying part 40 is configured to convey the bus bar to the battery string carrying part 30 and stack the bus bar at a predetermined position on the battery string; the bus bar welding part 50 is configured to weld the bus bar on the battery string.

[0048] Or, the second method: The bus bar conveying part 40 is configured to convey the bus bar to a predetermined position on the battery string carrying part 30; the battery string conveying part 20 is configured to convey the battery string to the battery string carrying part 30 and stack the battery string on the bus bar; the bus bar welding part 50 is configured to weld the battery string on the bus bar.

[0049] After the battery cells are welded into a string, by conveying the battery string and the bus bar to the battery string carrying part 30 and completing the on-line welding of the bus bar on the battery string carrying part 30, the series welding of battery cells and the welding of bus bars are integrated and completed in one device, saving the separate stacking welding equipment used in the subsequent processes of the prior art, reducing the volume of the device, saving the space occupied by the entire device, and reducing the device cost. The bus bar and the battery string are welded using two optional welding sequences, which can be flexibly selected according to the actual production situation.

[0050] As an optional embodiment, the battery string forming part includes a battery cell feeding device, a welding tape feeding device, a welding conveying device, and a battery string welding device; the battery cell feeding device and the welding tape feeding device are configured to stack the battery cells and the welding tapes in a predetermined order on the welding conveying device; the welding conveying device is configured to convey the stacked welding tapes and battery cells to the battery string welding device; the battery string welding device is configured to weld the battery cells and the welding tapes into a battery string.

[0051] The solar cell and the solder tape are respectively conveyed to the welding and conveying device through the solar cell feeding device and the solder tape feeding device, and the solar cell and the solder tape are welded into a battery string through the battery string welding device.

[0052] As an alternative embodiment, the battery string conveying unit 20 includes a battery string conveying mechanism 21 and a battery string handling mechanism (not shown in the figure); the battery string conveying mechanism 21 is configured to carry and convey the battery string, and the battery string handling mechanism is configured to convey the battery string on the battery string conveying mechanism 21 to the battery string carrying unit 30.

[0053] The battery string on the battery string conveying mechanism 21 is conveyed to the battery string carrying unit 30 through the battery string handling mechanism, so as to realize the transfer of the battery string.

[0054] In this embodiment, optionally, the battery string conveying mechanism 21 adopts a conveyor belt, and the battery string handling mechanism adopts a robot.

[0055] As an alternative embodiment, the bus bar conveying unit 40 includes a bus bar carrying platform 41 and a bus bar handling mechanism 42; the bus bar carrying platform 41 is configured to carry the bus bar, and the bus bar handling mechanism 42 is configured to convey the bus bar on the bus bar carrying platform 41 to the battery string carrying unit 30. Optionally, at least two bus bars can be placed in parallel on the bus bar carrying platform 41 at a time.

[0056] The bus bar on the bus bar carrying platform 41 is conveyed to the battery string carrying unit 30 through the bus bar handling mechanism 42, so as to realize the feeding of the bus bar.

[0057] As Figure 3 shown, as an alternative embodiment, the bus bar handling mechanism 42 includes a slide rail 421 and a plurality of adsorption mechanisms 422 slidably engaged with the slide rail 421, and each adsorption mechanism 422 is configured to adsorb a bus bar. In this embodiment, there are 3 adsorption mechanisms 422, which can move independently along the slide rail 421 respectively. Specifically, as Figure 1 , Figure 2 shown, the bus bar handling mechanism 42 is installed above the bus bar carrying platform 41, and can adsorb the bus bar on the bus bar carrying platform 41 and drive it to move to a predetermined position.

[0058] The bus bar is adsorbed by the adsorption mechanism 422, and the slide rail 421 guides the adsorption mechanism 422, so as to realize the smooth feeding of the bus bar.

[0059] Optionally, the adsorption mechanism 422 adopts any one of the adsorption structures in the prior art, such as vacuum adsorption.

[0060] As Figure 1 , Figure 2As shown, as an alternative embodiment, the busbar conveying unit 40 further includes a busbar feeding mechanism 43, a busbar traction mechanism 44, and a busbar cutting mechanism 45. The busbar cutting mechanism 45 is installed between the busbar feeding mechanism 43 and the busbar traction mechanism 44; the busbar feeding mechanism 43 is configured to store the coiled busbar, the busbar traction mechanism 44 is configured to traction the busbar stored in the busbar feeding mechanism 43 to the busbar bearing platform 41, and the busbar cutting mechanism 45 is configured to cut the busbar pulled out by the busbar traction mechanism 44.

[0061] By storing the coiled busbar through the busbar feeding mechanism 43, traction the busbar stored in the busbar feeding mechanism 43 to the busbar bearing platform 41 through the busbar traction mechanism 44, and cutting the busbar pulled out by the busbar traction mechanism 44 through the busbar cutting mechanism 45, the qualified busbar can be produced near the busbar bearing platform 41, improving the production efficiency.

[0062] The busbar feeding mechanism 43 is used to provide the busbar. Optionally, at least three busbars can be provided at one time, corresponding to the ends of the battery strings and the middle of two battery strings respectively.

[0063] As Figures 4 to 6 shown, as an alternative embodiment, the busbar traction mechanism 44 includes a chuck 441, a chuck driving mechanism 442, and a chuck transverse movement mechanism 443. The chuck 441 is used to clamp the busbar. A plurality of chucks 441 (three in this embodiment) are installed on the moving part of the chuck driving mechanism 442, and the chuck driving mechanism 442 is installed on the chuck transverse movement mechanism 443; the chuck driving mechanism 442 is used to drive the chuck 441 to clamp the free end of the busbar, and the chuck transverse movement mechanism 443 is used to drive the chuck driving mechanism 442 to move, so that the busbar is placed on the busbar bearing platform 41. The busbar traction mechanism 44 drives and traction the busbar to a predetermined length, and then cuts it by the busbar cutting mechanism 45.

[0064] By driving the chuck 441 to clamp the free end of the busbar through the chuck driving mechanism 442, and driving the chuck driving mechanism 442 to move through the chuck transverse movement mechanism 443, so that the busbar is placed on the busbar bearing platform 41, the busbar is transferred to the busbar bearing platform 41 stably and reliably.

[0065] The chuck driving mechanism 442 and the chuck transverse movement mechanism 443 can adopt any structure in the prior art. Optionally, the chuck driving mechanism 442 adopts a cylinder; the chuck transverse movement mechanism 443 adopts a motor and a slide rail slider structure. The chuck driving mechanism 442 is installed on the slide rail through a slider, and the motor drives the chuck driving mechanism 442 to slide along the slide rail.

[0066] See again Figure 1 、Figure 2 As an alternative embodiment, the bus bar conveying unit 40 further includes a bus bar pressing mechanism 46; the bus bar pressing mechanism 46 is installed between the bus bar feeding mechanism 43 and the bus bar cutting mechanism 45, and the bus bar pressing mechanism 46 is configured to press the bus bar when the bus bar is cut.

[0067] By configuring the bus bar pressing mechanism 46 to press the bus bar when the bus bar is cut, the bus bar can be prevented from jumping, which affects the quality of the bus bar.

[0068] As Figure 7 shown, as an alternative embodiment, the bus bar welding unit 50 includes a welding bracket 51, a welding head 52 and a rotating mechanism 53. The welding head 52 is installed on the welding bracket 51, and the welding bracket 51 is installed on the rotating mechanism 53; the rotating mechanism 53 is configured to drive the welding bracket 51 to rotate so that the welding head 52 moves to the bus bar welding position. Optionally, the rotating mechanism 53 uses a motor.

[0069] By driving the welding bracket 51 to rotate through the rotating mechanism 53, the welding head 52 is moved to the bus bar welding position when the welding head 52 works, and the welding head 52 is moved away when the welding head 52 does not need to weld, which can prevent the welding head 52 from touching the battery string or the bus bar, thereby affecting the welding quality of the bus bar.

[0070] In this embodiment, when a string of battery strings is carried on the battery string carrying part 30, two groups of welding heads 52 are configured, and the two groups of welding heads 52 are respectively arranged corresponding to the positions of welding the bus bars at both ends of a string of battery strings; or, when two strings of battery strings arranged along the length direction of the battery string are carried on the battery string carrying part 30, three groups of welding heads 52 are configured, and the three groups of welding heads 52 are respectively arranged corresponding to the positions of welding the bus bars at both ends of the two strings of battery strings and the adjacent positions.

[0071] By configuring different numbers of welding heads 52, the bus bar welding unit 50 can be applicable to welding the bus bars at both ends of a long string of battery strings and can also be applicable to welding the bus bars at both ends of two short strings of battery strings arranged in sequence, improving the applicability of the equipment.

[0072] The above has described the present invention in sufficient detail with a certain particularity. Those of ordinary skill in the art should understand that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the present invention should fall within the protection scope of the present invention. The scope of protection required by the present invention is defined by the claims described, rather than by the above description in the embodiments.

Claims

1. A battery cell string soldering and bus bar welding integrated machine, characterized in that, The integrated welding machine for battery string and bus bar includes a battery string forming section, a battery string conveying section, a battery string bearing section, a bus bar conveying section and a bus bar welding section; wherein: The battery string forming section is configured to stack battery cells and welding tapes in a predetermined order and then weld them into a battery string; The battery string conveying section is configured to convey the battery string to the battery string bearing section; the bus bar conveying section is configured to convey the bus bar to the battery string bearing section and stack the bus bar at a predetermined position on the battery string; the bus bar welding section is configured to weld the bus bar on the battery string; Alternatively, the bus bar conveying section is configured to convey the bus bar to a predetermined position on the battery string bearing section; the battery string conveying section is configured to convey the battery string to the battery string bearing section and stack the battery string on the bus bar; the bus bar welding section is configured to weld the battery string on the bus bar; The bus bar conveying section includes a bus bar feeding mechanism, a bus bar cutting mechanism and a bus bar pressing mechanism; the bus bar pressing mechanism is installed between the bus bar feeding mechanism and the bus bar cutting mechanism, and the bus bar pressing mechanism is configured to press the bus bar when the bus bar is cut; The bus bar welding section includes a welding bracket, a welding head and a rotating mechanism, the welding head is installed on the welding bracket, and the welding bracket is installed on the rotating mechanism; the rotating mechanism is configured to drive the welding bracket to rotate so that the welding head moves to the bus bar welding position.

2. The integrated welding machine for battery cell string soldering and bus bar soldering according to claim 1, wherein The battery string forming section includes a battery cell feeding device, a welding tape feeding device, a welding conveying device and a battery string welding device; The battery cell feeding device and the welding tape feeding device are configured to stack the battery cells and the welding tapes in a predetermined order on the welding conveying device; The welding conveying device is configured to convey the stacked welding tapes and battery cells to the battery string welding device; The battery string welding device is configured to weld the battery cells and the welding tapes into a battery string.

3. The integrated welding machine for battery cell string soldering and bus bar soldering according to claim 1, characterized in that, The battery string conveying section includes a battery string conveying mechanism and a battery string handling mechanism; the battery string conveying mechanism is configured to carry and convey the battery string, and the battery string handling mechanism is configured to carry the battery string on the battery string conveying mechanism to the battery string bearing section.

4. The integrated welding machine for welding the busbars of battery cells in series connection according to claim 1, characterized in that, The bus bar conveying section includes a bus bar bearing table and a bus bar handling mechanism; the bus bar bearing table is configured to carry the bus bar, and the bus bar handling mechanism is configured to carry the bus bar on the bus bar bearing table to the battery string bearing section.

5. The integrated welding machine for welding the busbars of battery cells in series according to claim 4, wherein, The bus bar handling mechanism includes a slide rail and a plurality of adsorption mechanisms slidably engaged with the slide rail, and each adsorption mechanism is configured to adsorb a bus bar.

6. The integrated welding machine for battery cell string soldering and bus bar welding according to claim 4, wherein, The bus bar conveying section further includes a bus bar traction mechanism, and the bus bar cutting mechanism is installed between the bus bar feeding mechanism and the bus bar traction mechanism; the bus bar feeding mechanism is configured to store the coiled bus bar, and the bus bar traction mechanism is configured to traction the bus bar stored in the bus bar feeding mechanism to the bus bar bearing table, and the bus bar cutting mechanism is configured to cut off the bus bar pulled out by the bus bar traction mechanism.

7. The integrated welding machine for battery cell string soldering and bus bar welding according to claim 6, characterized in that, The bus bar traction mechanism includes a chuck, a chuck driving mechanism and a chuck transverse movement mechanism. A plurality of the chucks are installed on the movable part of the chuck driving mechanism, and the chuck driving mechanism is installed on the chuck transverse movement mechanism; the chuck driving mechanism is used to drive the chuck to clamp the free end of the bus bar, and the chuck transverse movement mechanism is used to drive the chuck driving mechanism to move so that the bus bar is placed on the bus bar bearing table.

8. The integrated welding machine for bus bar welding of battery strings according to claim 1, wherein when a string of battery strings is carried on the battery string carrying section, two groups of the welding heads are configured, and the two groups of the welding heads are respectively arranged at positions corresponding to the positions of welding the bus bars at both ends of the string of battery strings; or, when two strings of battery strings arranged along the length direction of the battery strings are carried on the battery string carrying section, three groups of the welding heads are configured, and the three groups of the welding heads are respectively arranged at the positions corresponding to the positions of welding the bus bars at both ends of the two strings of battery strings and the adjacent positions.

Images