Solar cell string transport device and transport method

Abstract

The application discloses a solar cell string conveying device and a conveying method. The conveying device is used for conveying the cell string along a horizontal first direction. In the conveying device, a carrier is used for carrying the cell string; a first conveying mechanism is arranged above a second conveying mechanism, the first conveying mechanism is used for conveying the carrier along the first direction, and the second conveying mechanism is used for conveying the carrier along the opposite direction of the first direction; and a lifting mechanism is used for conveying the carrier between the first conveying mechanism and the second conveying mechanism. The conveying method comprises the following steps in sequence: S1, placing the cell string on the carrier, and moving the carrier along the first direction; S2, taking the cell string away from the carrier when the carrier moves to a discharging station; S3, lowering the carrier; S4, moving the carrier along the opposite direction of the first direction; and S5, raising the carrier, and then repeating S1. The conveying device has a small floor area, and can improve conveying precision, conveying efficiency and the production efficiency of multiple cell strings.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of solar cell production and manufacturing, and in particular to a solar cell string conveying device and conveying method. BACKGROUND

[0002] A plurality of solar cell pieces are connected in series along a single direction to form a solar cell string, which is a common method to improve the power generation efficiency of solar cell pieces. Further, a plurality of cell strings can be connected in parallel or in series along a vertical direction to form a multi-parallel cell string with higher power generation efficiency.

[0003] Existing conveying devices for producing solar cell strings mostly use a belt type conveying mechanism, which is only suitable for conveying a single cell string. In the production process of the cell string, the cell pieces and the solder strips are alternately loaded on the belt, and then undergo preheating, welding, and unloading processes to complete the production of a single cell string. If multiple cell strings need to be further connected, multiple conveying devices need to be used for synchronous parallel conveying, and the multiple cell strings need to be connected in parallel downstream of the conveying devices. The above combination device undoubtedly has a complex structure, a large floor area, and is difficult to maintain and operate, and has a low production efficiency.

[0004] If the same conveying device is used to convey multiple parallel cell strings, the conventional conveying belt is difficult to stably support a large number of cell pieces arranged in an array. In particular, when the number of parallel cell string groups to be conveyed is large, the width of the belt needs to be large, which significantly increases the difficulty and cost of manufacturing the belt. On the other hand, due to the flexibility of the belt, problems such as twisting, deviation, shaking, and misalignment are likely to occur, especially the middle part of the belt will be significantly deformed downward, which will cause the cell pieces and the solder strips carried by the belt to be displaced, the welding precision to be reduced, and the production quality of the multi-parallel cell string to be seriously affected. In addition, the maintenance of the belt type conveying device is difficult, and the service life of the belt is short (about 1-2 months), which needs to be replaced frequently. Each replacement requires downtime and reinstallation, which not only consumes manpower but also reduces production efficiency. SUMMARY

[0005] An object of the present application is to provide a solar cell string conveying device with a novel structure, a small floor area, and the ability to stably convey multiple parallel cell strings.

[0006] To achieve the above object, the technical solution adopted by the present application is as follows:

[0007] A solar cell string conveying device for conveying cell strings along a horizontal first direction, the conveying device comprising a carrier, a first conveying mechanism, a second conveying mechanism and a lifting mechanism, wherein the carrier is configured to carry the cell strings; the first conveying mechanism is arranged above the second conveying mechanism, the first conveying mechanism is configured to convey the carrier along the first direction, and the second conveying mechanism is configured to convey the carrier along the opposite direction of the first direction; and the lifting mechanism is configured to convey the carrier between the first conveying mechanism and the second conveying mechanism.

[0008] In some embodiments, the lifting mechanism has two groups arranged along the first direction, each group of the lifting mechanism is capable of conveying the carrier along the up-down direction. In this way, the two groups of lifting mechanisms can respectively drive the carriers at different positions to lift and drop. Along the first direction, the lifting mechanism at the downstream is configured to drive the empty carrier conveying the cell strings to drop from the first conveying mechanism to the second conveying mechanism, and the lifting mechanism at the upstream is configured to drive the empty carrier to rise from the second conveying mechanism to the first conveying mechanism for a new round of cell string conveying.

[0009] In some embodiments, the carrier is made of rigid material, and the carrier has a horizontal surface for carrying the cell strings, and there are at least two carriers. In this way, each carrier can stably carry a whole set of multi-parallel cell strings, and the components of the multi-parallel cell strings and the carrier remain relatively static and do not displace relative to each other during the whole preparation process from feeding, placing, preheating, welding to discharging, which is beneficial to improve the manufacturing precision of the multi-parallel cell strings. The multiple carriers can cyclically convey and alternately work, continuously conveying different batches of multi-parallel cell strings, and improving the production efficiency.

[0010] In some embodiments, multiple through holes are arranged on the carrier, and the conveying device further comprises a vacuum suction mechanism, the vacuum suction mechanism is capable of connecting with the through holes from below the carrier and forming vacuum suction on the cell strings above the carrier. In this way, the cell pieces, the ribbon and other components can be stably connected with the carrier before being welded with each other, and do not displace relative to each other, thereby ensuring the welding precision.

[0011] In some embodiments, the first conveying mechanism comprises a first track extending along the first direction, the first track has two tracks spaced along a second direction which is horizontal and perpendicular to the first direction, and the two sides of the second direction of the carrier are respectively capable of moving along the same side of the first track; the second conveying mechanism comprises a second track extending along the first direction, the second track has two tracks spaced along the second direction, and the two sides of the second direction of the carrier are respectively capable of moving along the same side of the second track. In this way, the first track and the second track respectively provide guidance for the conveying of the carrier, and the carrier can be orderly and circularly conveyed along the established track.

[0012] In some embodiments, along the second direction, the width of the carrier is less than the spacing between the two first tracks, and the width of the carrier is greater than the spacing between the two second tracks; the first conveying mechanism further comprises a moving assembly capable of being movably connected with the first track along the extension direction of the first track, at least one set of the moving assembly is arranged on each of the first tracks, and each set of the moving assembly is capable of being connected with the carrier and driving the carrier to move along the first direction. In this way, by controlling the connection or disconnection of the moving assembly and the carrier, the carrier can realize the lifting conversion between the first conveying mechanism and the second conveying mechanism, and the carrier can be connected with the moving assembly when ascending and can be directly received by the second track when descending.

[0013] In some embodiments, the lifting mechanism comprises a lifting platform capable of moving along the up-down direction, the lifting platform has a first position and a second position, when the lifting platform is located at the first position, the lifting platform can support below the carrier connected with the moving assembly, and when the lifting platform is located at the second position, the upper surface of the lifting platform is lower than the lower surface of the carrier connected with the second track. In this way, the lifting platform can reciprocate between the established positions, and the program control is convenient. When the lifting platform ascends, it can lift the carrier and then drive the carrier to ascend together; when the carrier descends to the height of the second conveying mechanism, it can be connected with the second track; and the lifting platform can continue to descend to the second position and be disconnected with the carrier, thereby avoiding the carrier and not affecting the conveying of the carrier on the second track.

[0014] In some embodiments, the first conveying mechanism comprises a moving assembly, each of the first tracks is provided with at least one set of the moving assembly, each set of the moving assembly comprises a support and a pushing piece, the support is movably connected with the first track along the extending direction of the first track, the pushing piece is movably connected with the support along the second direction, the support can support the carrier from below, and the pushing piece can abut against the sidewall of the carrier along the second direction. In this way, the moving assembly can be connected with the carrier from at least two different directions, thereby improving the stability of the connection. The moving assembly can support the carrier from below and tightly abut against the carrier from both sides, thereby preventing the carrier from slipping off the moving assembly during the conveying process. In addition, the pushing piece can move along the second direction, and when the pushing piece moves away from the carrier, the moving assembly can move relative to the carrier along the first direction, thereby further being disconnected from the carrier, so as to realize the connection between the moving assembly and the lifting mechanism, or the connection between different moving assemblies.

[0015] In some embodiments, the sidewalls of the carrier along the second direction are respectively provided with positioning grooves, each set of the moving assembly comprises a positioning piece connected with the pushing piece, and when the pushing piece abuts against the sidewall of the carrier, the positioning piece is fitted and clamped in the positioning groove. In this way, the moving assembly can be better positioned and connected with the carrier, thereby preventing the carrier from slipping off the moving assembly during the conveying process.

[0016] In some embodiments, the first conveying mechanism further comprises a moving assembly movably connected with the first track along the extending direction of the first track, each of the first tracks is provided with at least two sets of the moving assembly, and the two sets of the moving assembly can be simultaneously connected with one side of the carrier. In this way, for a plate-shaped carrier with a large size, multiple sets of the moving assembly can balance the stress and form stable support from the four corner portions of the carrier, thereby jointly driving the carrier to move along the first track.

[0017] In some embodiments, the second conveying mechanism comprises a conveying belt, the periphery of each of the second tracks is provided with a circle of the conveying belt, the second conveying mechanism further comprises a driving device for driving at least one of the conveying belts to rotate, and the rotation axis of the conveying belt extends along the second direction. Since the second conveying mechanism is only used for conveying the empty carrier, the stability requirement for the conveying is relatively low, and the structure of a belt pulley can be adopted to realize the conveying, thereby being simple in structure, convenient to control, and small in occupied space.

[0018] In some embodiments, the carrier is capable of simultaneously carrying multiple groups of the battery string, each group of the battery string extending along the first direction, and the multiple groups of the battery string being arranged side by side along a second direction, the second direction extending along a horizontal direction, and the second direction being perpendicular to the first direction. The transmission device provided by the application is particularly suitable for transmitting multiple parallel battery strings and is applied to a production device of multiple parallel battery strings, thereby solving the problem that the conventional transmission device is difficult to stably transmit multiple parallel battery strings and improving the transmission efficiency and product quality of multiple parallel battery strings.

[0019] Another object of the application is to provide a novel solar battery string transmission method capable of stably transmitting multiple parallel battery strings. To achieve the above object, the application adopts the technical solution of:

[0020] A solar battery string transmission method for transmitting a battery string along a horizontal first direction, the transmission method sequentially comprising the following steps:

[0021] S1, placing the battery string on a carrier, the carrier moving along the first direction;

[0022] S2, when the carrier moves to a feeding station, taking the battery string away from the carrier;

[0023] S3, lowering the carrier;

[0024] S4, moving the carrier along the opposite direction of the first direction;

[0025] S5, raising the carrier, and then repeatedly performing the S1.

[0026] In some embodiments, in the S1, the carrier is transmitted by a moving assembly, the moving assembly moving along the first direction synchronously with the carrier; the moving assembly has multiple groups arranged along the first direction in sequence, and the moving assembly at least comprises a first assembly and a second assembly, along the first direction, the first assembly being located upstream of the second assembly; the transmission method further comprises a handover method of the moving assembly: first, the carrier is connected with the first assembly, and the first assembly moves along the first direction synchronously with the carrier; then, the second assembly moves along the opposite direction of the first direction relative to the carrier until the second assembly is connected with the carrier; next, the second assembly moves along the first direction synchronously with the carrier, and the first assembly moves along the opposite direction of the first direction relative to the carrier until the first assembly is disconnected from the carrier. Each carrier in the application can be continuously circulated and transmitted, and the relative positions of the moving assemblies on the same track do not change, and as the carrier moves forward, the moving assemblies at different positions are handed over, thereby ensuring the smooth transmission of each carrier in front and back.

[0027] With the use of the technical scheme, the solar cell string transmission device provided by the application discards the traditional belt type transmission mechanism, uses a carrier to synchronously transmit a plurality of parallel cell strings as a whole, and provides a novel solar cell string transmission method. In the application, one carrier can simultaneously transmit a plurality of parallel cell strings as a whole. During the whole production process from feeding to discharging, the carrier does not deform, each component of the cell string remains relatively static with the carrier, and the cell string always receives processing in stable transmission, which helps to improve the processing precision of the plurality of parallel cell strings and the product quality. One or more carriers in the application can be recycled, and the carrier is preferably made of a rigid material such as stainless steel, which has low manufacturing difficulty and is convenient to maintain and replace compared with a belt. The service life of the carrier itself can be up to several years. When the carrier needs to be replaced, the old carrier is only taken out and the new carrier is put in, which is very convenient and saves time and effort. The application significantly reduces the floor area of the transmission device, and can improve the transmission efficiency and the production efficiency of the plurality of parallel cell strings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the application, the drawings needed in the following embodiment description will be briefly introduced.

[0029] FIG. 1 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is not shown; Figure 1 FIG. 2 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is not shown;

[0030] FIG. 3 is an enlarged schematic view of position A in FIG. 2; Figure 2 FIG. 4 is a schematic view of a motion assembly in the embodiment of the application; Figure 1 FIG. 5 is an enlarged schematic view of position B in FIG. 4;

[0031] FIG. 6 is a schematic view of a motion assembly in the embodiment of the application; Figure 3 FIG. 7 is a schematic view of a carrier and a motion assembly in the embodiment of the application;

[0032] FIG. 8 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is connected with a first transmission mechanism; Figure 4 FIG. 9 is an enlarged schematic view of position C in FIG. 8; Figure 3 FIG. 10 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is connected with a second transmission mechanism;

[0033] FIG. 11 is a schematic view of a motion assembly in the embodiment of the application; Figure 5 FIG. 12 is a schematic view of a carrier and a motion assembly in the embodiment of the application;

[0034] FIG. 13 is a schematic view of a carrier and a motion assembly in the embodiment of the application; Figure 6 FIG. 14 is a schematic view of a carrier and a motion assembly in the embodiment of the application; and

[0035] FIG. 15 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is connected with a third transmission mechanism; Figure 7 FIG. 16 is an enlarged schematic view of position D in FIG. 15;

[0036] FIG. 17 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is connected with a fourth transmission mechanism; Figure 8 FIG. 18 is an enlarged schematic view of position E in FIG. 17; Figure 7 FIG. 19 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is connected with a fifth transmission mechanism; FIG. 20 is an enlarged schematic view of position F in FIG. 19;

[0037] FIG. 21 is a schematic view of a transmission device in the embodiment of the application, wherein a carrier is connected with a sixth transmission mechanism; Figure 9Fig. 2 is a side view of the transmission device in the embodiment, in which the carrier is connected with the second transmission mechanism;

[0038] Fig. 2 is a side view of the transmission device in the embodiment, in which the carrier is connected with the second transmission mechanism; Figure 10 Fig. 2 is a side view of the transmission device in the embodiment, in which the carrier is connected with the second transmission mechanism;

[0039] Wherein: 100, carrier; 101, side wall; 102, positioning groove; 200, first transmission mechanism; 210, first track; 220, movement assembly; 220a, first assembly; 220b, second assembly; 221, support; 2211, bottom plate; 2212, mounting plate; 2213, support wheel; 2214, limiting plate; 222, pushing piece; 223, positioning piece; 224, pushing cylinder; 300, second transmission mechanism; 310, second track; 320, transmission belt; 400, lifting mechanism; 410, lifting assembly; 411, lifting platform; 412, lifting driving device; 500, rack; 600, battery string; 1001, rotation axis; 1002, support wheel axis; 1003, positioning piece axis; X, first direction; Y, second direction; Z, up-down direction. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present application are described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, but they are not limitations of the present application.

[0041] Referring to Figures 1 to 6 As shown in the figure, a solar battery string transmission device is used for transmitting battery string 600 along the horizontal first direction X, and is especially suitable for transmitting multi-parallel battery string 600. The transmission device can be applied to the production and manufacturing equipment of multi-parallel battery string 600, and cooperates with other devices (not shown in the figure) to carry out a series of production procedures such as feeding, placing, positioning, preheating, welding, busbar welding and discharging of battery sheet and welding strip during the transmission. The transmission device plays a function of continuously and stably transmitting multi-parallel battery string 600 during the production process, and helps to improve the manufacturing precision of multi-parallel battery string 600.

[0042] In the embodiment, the conveying device comprises a rack 500, and a carrier 100, a first conveying mechanism 200, a second conveying mechanism 300, and a lifting mechanism 400 arranged on the rack 500. For the convenience of description and understanding, an XYZ three-dimensional coordinate system is established with the rack 500 as the reference, wherein the first direction X, the second direction Y, and the up-down direction Z are perpendicular to each other, the first direction X and the second direction Y extend along the horizontal direction, and the up-down direction Z extends along the vertical direction. It should be noted that, since the conveying of the battery string 600 is unidirectional, the direction of the conveying of the battery string 600 is defined as the first direction X in the embodiment, and the direction opposite to the conveying direction of the battery string 600 is referred to as the opposite direction of the first direction X.

[0043] In the embodiment, the carrier 100 is used to directly carry and convey the battery string 600. The first conveying mechanism 200 is arranged above the second conveying mechanism 300, the first conveying mechanism 200 is used to convey the carrier 100 along the first direction X, and the second conveying mechanism 300 is used to convey the carrier 100 along the opposite direction of the first direction X. The lifting mechanism 400 is used to convey the carrier 100 between the first conveying mechanism 200 and the second conveying mechanism 300. In the embodiment, the conveying device comprises at least two carriers 100, each carrier 100 has the same structure and is made of rigid material, and each carrier 100 has a horizontal plane for carrying the battery string 600. Each carrier 100 is a rectangular stainless steel plate in this embodiment, which can provide a rigid, flat, and large-area horizontal carrying surface. In the embodiment, a plurality of through holes (not shown in the figure) are arranged on the carrier 100 at intervals, the through holes are arranged in a large number and densely, and the conveying device further comprises a vacuum suction mechanism (not shown in the figure), which is connected with the rack 500. The vacuum suction mechanism can be connected with the through holes from below the carrier 100 and form a vacuum suction on the battery string 600 above the carrier 100, so as to ensure that there is no relative displacement between different battery pieces and between the battery pieces and the welding ribbons, thereby improving the welding precision. In the embodiment, each carrier 100 can simultaneously carry a plurality of groups of battery strings 600, each group of battery strings 600 extends along the first direction X, and the plurality of groups of battery strings 600 are arranged side by side along the second direction Y. In this way, a plurality of battery pieces are arranged above each carrier 100 when the carrier 100 conveys the battery string 600, the battery pieces in the same group of battery strings 600 are connected in series through the welding ribbons, and the different groups of battery strings 600 can be connected in parallel or in series through the bus bars, thereby forming a whole group of multi-parallel battery strings 600. Figure 6 Five groups of battery strings 600 are connected in parallel to form a five-parallel battery string 600, which is specifically shown in the figure.

[0044] Referring to Figures 1 to 3As shown, in the embodiment, the lifting mechanism 400 has two groups of lifting assemblies 410 which are spaced along the first direction X, and each group of lifting assemblies 410 is capable of conveying the carrier 100 along the up-down direction Z. Specifically, the two groups of lifting assemblies 410 are identical in structure, and each group of lifting assemblies 400 further includes two groups of lifting assemblies 410 which are spaced along the first direction X. Each group of lifting assemblies 410 includes a lifting platform 411 and a lifting driving device 412, wherein the lifting platform 411 is capable of relative movement along the up-down direction Z, and the lifting driving device 412 is used to drive the lifting platform 411 to move, and here the lifting driving device 412 specifically adopts a pneumatic cylinder. In this way, the two groups of lifting assemblies 410 in each group of lifting assemblies 400 can simultaneously support the carrier 100 from the front and rear sides, and drive the carrier 100 to lift between the first conveying mechanism 200 and the second conveying mechanism 300.

[0045] Referring to Figures 1 to 10 As shown, in the embodiment, the first conveying mechanism 200 includes a first track 210 which extends along the first direction X, and the first track 210 has two tracks which are spaced along the second direction Y, and the two sides of the carrier 100 along the second direction Y are respectively capable of relative movement along the same side of the first track 210. Similarly, the second conveying mechanism 300 includes a second track 310 which extends along the first direction X, and the second track 310 has two tracks which are spaced along the second direction Y, and the two sides of the carrier 100 along the second direction Y are respectively capable of relative movement along the same side of the second track 310. Further, along the second direction Y, the width of the carrier 100 is less than the spacing between the two first tracks 210, and the width of the carrier 100 is greater than the spacing between the two second tracks 310. The first conveying mechanism 200 further includes a movement assembly 220 which is movably connected with the first track 210 along the extension direction of the first track 210, and at least one group of movement assemblies 220 is arranged on each first track 210, and each group of movement assemblies 220 is capable of being connected with the carrier 100 and driving the carrier 100 to move along the first direction X. In this way, when the movement assembly 220 is connected with the carrier 100, the carrier 100 can move along the first track 210 with the movement assembly 220; when the movement assembly 220 is disconnected from the carrier 100, the carrier 100 can be disconnected from the first track 210, and then connected with the second track 310 and move relative to the second track 310.

[0046] In the embodiment, each lifting platform 411 in the lifting mechanism 400 has a first position and a second position relative to the rack 500. Referring to Figure 9 When the lifting platform 411 is located at the first position, the lifting platform 411 can support below the carrier 100 which is connected with the movement assembly 220, and at this time the movement assembly 220 can move away from the carrier 100 along the first direction X; Referring to Figure 10When the lifting platform 411 is located at the second position, the upper surface of the lifting platform 411 is lower than the lower surface of the carrier 100 connected with the second track 310, so that the lifting platform 411 can form an avoidance and does not affect the movement of the carrier 100 along the second track 310.

[0047] Referring to Figures 3 to 8 As shown in the figure, in the embodiment, each set of movement assembly 220 includes a support piece 221 and a pushing piece 222, wherein the support piece 221 is connected with the corresponding first track 210 in relative movement along the extension direction of the first track 210, and the pushing piece 222 is connected with the corresponding support piece 221 in relative movement along the second direction Y. The support piece 221 can support the carrier 100 from below, and the pushing piece 222 can abut against the side wall 101 of the carrier 100 along the second direction Y. Each set of movement assembly 220 further includes a pushing cylinder 224 for driving the relative movement of the pushing piece 222.

[0048] Further, in each set of movement assembly 220 of the embodiment, the support piece 221 specifically includes a bottom plate 2211, a mounting plate 2212, a support wheel 2213, and a limiting plate 2214, wherein the bottom plate 2211 is directly connected with the first track 210 in sliding connection, the mounting plate 2212 and the limiting plate 2214 are both fixed on the bottom plate 2211, the mounting plate 2212 and the limiting plate 2214 each have two along the first direction X, and along the second direction Y, the two mounting plates 2212 are located on the inner side of the two limiting plates 2214, the top of each limiting plate 2214 is higher than the top of the corresponding mounting plate 2212, so that the limiting plate 2214 can block the sliding of the carrier 100 along the second direction Y. The inner side of each mounting plate 2212 is connected with two support wheels 2213, the support wheel axis 1002 of each support wheel 2213 extends along the second direction Y, the radii of all support wheels 2213 are the same, and all support wheel axes 1002 are located in the same horizontal plane, the top of each support wheel 2213 is flush with or slightly higher than the top of the mounting plate 2212, so that the four support wheels 2213 in each set of movement assembly 220 can support the carrier 100 at the same height, and the support wheels 2213 of different movement assemblies 220 can also support the carrier 100 at the same height, ensuring that the carrier 100 can be stably transmitted at the same horizontal height when located in the first transmission mechanism 200. It should be noted that each support wheel 2213 and the corresponding mounting plate 2212 can be fixedly connected or rotatably connected about the support wheel axis 1002, and in the embodiment, the rotatable connection is preferred, so that when the movement assembly 220 and the carrier 100 need to move relative to each other along the first direction X, the support wheel 2213 can relatively roll at the bottom of the carrier 100, and the friction between the movement assembly 220 and the carrier 100 is smaller, and the movement is more labor-saving.

[0049] Further, in the embodiment, the two side walls 101 of the second direction Y of the carrier 100 are respectively provided with positioning grooves 102, each set of movement assemblies 220 includes a positioning member 223 connected with the pushing member 222, when the pushing member 222 abuts against the side wall 101 of the carrier 100, the positioning member 223 is matched and clamped in one positioning groove 102. In the embodiment, the pushing member 222 can move relatively through the gap between the two mounting plates 2212, and the supporting member 221 is connected with the pushing cylinder 224, specifically with the bottom plate 2211. The positioning member 223 adopts a roller structure, which is relatively rotatably connected to the top of the pushing member 222 along the positioning member axis 1003 extending in the up-down direction Z. The width of the positioning groove 102 along the first direction X is slightly larger than the diameter of the positioning member 223, so that the positioning member 223 can be inserted into the positioning groove 102 along the second direction Y in a shape matching manner only when the positions of the positioning member 223 and the positioning groove 102 correspond, so that the pushing member 222 can abut against the side wall 101, preventing the relative displacement of the carrier 100 and the movement assembly 220.

[0050] Referring to Figures 1 to 8 In the embodiment, at least two sets of movement assemblies 220 are arranged on each first track 210, and two sets of movement assemblies 220 can be connected to one side of the carrier 100 at the same time. Further, in order to improve the transmission efficiency and meet the requirement that at least two carriers 100 can be transmitted along the first track 210 at the same time, at least four sets of movement assemblies 220 are arranged on each first track 210 in the embodiment. Further considering the connection between the upstream and downstream movement assemblies 220, six sets of movement assemblies 220 are actually arranged on each first track 210 in the embodiment. When each carrier 100 moves along the first track 210, at least four sets of movement assemblies 220 are connected to the four corners of the rectangular carrier 100 from both sides at the same time, so as to stably transmit the carrier 100. Correspondingly, in the embodiment, each side wall 101 of the carrier 100 is provided with a plurality of positioning grooves 102, and the positioning member 223 of each set of movement assemblies 220 can be selectively inserted into one of the positioning grooves 102. In the embodiment, the bottom plate 2211 in each movement assembly 220 and the corresponding first track 210 can adopt the structure of a linear motor, so as to accurately control the movement speed and other parameters of each set of movement assemblies 220 by a computer.

[0051] Referring to Figure 1 and Figure 2As shown, in the embodiment, the second conveying mechanism 300 comprises conveying belts 320, each of the second tracks 310 is provided with a conveying belt 320, and the second conveying mechanism 300 further comprises a driving device (not shown in the figure) for driving at least one of the conveying belts 320 to rotate, each of the conveying belts 320 has two rotation axis lines 1001 which are arranged at intervals along the first direction X, and each of the rotation axis lines 1001 extends along the second direction Y. In this way, the second tracks 310 on both sides form simple conveying belt mechanisms, which can support the carriers 100 from both sides, and return the empty carriers 100 from the downstream to the upstream, so as to realize the recycling of the carriers 100.

[0052] Referring to Figures 1 to 10 As shown, based on the conveying device, the embodiment further provides a solar cell string conveying method for conveying the cell string 600 along the first direction X, and is especially suitable for stably conveying the multi-parallel cell string 600 as a whole in the production and manufacturing process of the multi-parallel cell string 600. The conveying method comprises the following steps in sequence:

[0053] S1, placing the cell string 600 on the carrier 100, and moving the carrier 100 along the first direction X;

[0054] S2, taking the cell string 600 away from the carrier 100 when the carrier 100 moves to the unloading station;

[0055] S3, lowering the carrier 100;

[0056] S4, moving the carrier 100 along the opposite direction of the first direction X;

[0057] S5, raising the carrier 100, and then repeating S1.

[0058] In the embodiment, the conveying method of each carrier 100 is the same.

[0059] Specifically, in S1, the carrier 100 is conveyed by the movement assembly 220, and the movement assembly 220 moves along the first direction X synchronously with the carrier 100. During the movement of the carrier 100, the cell string 600 on the carrier 100 sequentially undergoes the processes of loading, arranging, preheating, welding and the like.

[0060] In S2, after the multi-parallel cell string 600 is completed, the multi-parallel cell string 600 is taken away by the external unloading device as a whole, and the carrier 100 is empty.

[0061] In S3, the two lifting platforms 411 in the downstream lifting mechanism 400 are simultaneously lifted from the second position to the first position, and support the empty carrier 100 from below; then, in each movement assembly 220 originally connected with the carrier 100, the positioning member 223 and the pushing member 222 simultaneously move away from the carrier 100 along the second direction Y, and the positioning member 223 exits the positioning slot 102; then, each movement assembly 220 moves in the opposite direction of the first direction X until the carrier 100 is disconnected with all the movement assemblies 220; finally, the two lifting platforms 411 are synchronously lowered under the driving of the respective lifting driving devices 412, and drive the carrier 100 to stably descend until the carrier 100 contacts the second transmission mechanism 300, and the two side portions of the carrier 100 respectively fall on the same side transmission belt 320, while the lifting platforms 411 continue to descend to the second position and are disconnected with the carrier 100.

[0062] In S4, the two side transmission belts 320 are synchronously rotated to drive the carrier 100 to return to the upstream along the opposite direction of the first direction X.

[0063] In S5, the two lifting platforms 411 in the upstream lifting mechanism 400 are simultaneously lifted from the second position to lift the carrier 100 connected with the second transmission mechanism 300 and gradually move towards the first transmission mechanism 200; when the two lifting platforms 411 are lifted to the first position, the carrier 100 is also lifted to a preset height, and a plurality of movement assemblies 220 slide along the first track 210, and at least two movement assemblies 220 on each first track 210 correspond to the position of the carrier 100, wherein the supporting member 221 supports the lower side of the carrier 100, each positioning member 223 is aligned with a positioning slot 102, so that the pushing cylinder 224 can drive the positioning member 223 to move inward along the second direction Y and insert into the corresponding positioning slot 102, thereby realizing the connection between the movement assembly 220 and the carrier 100. After four movement assemblies 220 are connected with the carrier 100, the two lifting platforms 411 can fall back to the second position and be disconnected with the carrier 100, and enter a new round of carrier 100 transmission.

[0064] In the embodiment, the movement assemblies 220 on each first track 210 have a plurality of groups arranged in sequence along the first direction X, and the front and rear order of each group of movement assemblies 220 on each first track 210 cannot be changed, and the carrier 100 needs to be transmitted from one end of the first track 210 to the other end, so that the handover between the upstream and downstream movement assemblies 220 is involved in the process of transmitting the carrier 100 along the first track 210. Referring to Figure 6As shown, at least the first assembly 220a and the second assembly 220b are included in the plurality of motion assemblies 220, and the first assembly 220a is located upstream of the second assembly 220b along the first direction X. Here, two sets of the first assembly 220a and two sets of the second assembly 220b are respectively arranged on each side along the second direction Y. The switching method of the motion assembly 220 is as follows: first, the carrier 100 is transmitted by the first assembly 220a, and the two sides of the carrier 100 are respectively connected with the two sets of the first assembly 220a, and the first assembly 220a moves synchronously with the carrier 100 along the first direction X; then, the second assembly 220b on the two sides moves along the opposite direction of the first direction X relative to the carrier 100 until all the second assemblies 220b are connected with the carrier 100; then, the second assembly 220b can move synchronously with the carrier 100 along the first direction X, while the first assembly 220a gradually moves along the opposite direction of the first direction X relative to the carrier 100 until all the first assemblies 220a are disconnected with the carrier 100, so that the carrier 100 is completely switched from being transmitted by the first assembly 220a to being transmitted by the second assembly 220b, and the switching of the motion assembly 220 is completed. Thereafter, the original first assembly 220a can continue to move upstream to participate in the switching process of other carriers 100. It should be noted that in the above switching method, the first assembly 220a and the second assembly 220b can simultaneously move along the opposite direction of the first direction X relative to the carrier 100 without affecting the stable transmission of the carrier 100.

[0065] In summary, the solar cell string transmission device and the transmission method provided by the embodiment can realize the synchronous and stable transmission of the multi-parallel cell string 600, and help to improve the production efficiency and product quality of the multi-parallel cell string 600.

[0066] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A solar cell string transmission device for transmitting a solar cell string along a horizontal first direction, characterized in that: The transmission device includes a carrier, a first transmission mechanism, a second transmission mechanism, and a lifting mechanism. The carrier carries the battery string. The first transmission mechanism is positioned above the second transmission mechanism and is used to transmit the carrier along a first direction. The second transmission mechanism is used to transmit the carrier in the opposite direction to the first direction. The lifting mechanism transfers the carrier between the first and second transmission mechanisms. The first transmission mechanism includes a first track extending along the first direction, the first track having two parallel tracks spaced apart along a horizontal second direction, the second direction being perpendicular to the first direction, and the two sides of the vehicle in the second direction being able to move relative to each other along the first track on the same side; the second transmission mechanism includes a second track extending along the first direction, the second track having two parallel tracks spaced apart along the second direction, and the two sides of the vehicle in the second direction being able to move relative to each other along the second track on the same side. The first transmission mechanism includes motion components. At least one set of the motion components is provided on each of the first tracks. Each set of the motion components includes a support member and a pushing member. The support member is movable relative to the first track along the extension direction of the first track and is connected to the first track. The pushing member is movable relative to the support member along the second direction. The support member is able to support the vehicle from below, and the pushing member is able to abut against the side wall of the vehicle along the second direction.

2. The solar cell string transmission device according to claim 1, characterized in that: The lifting mechanism has two sets of lifting mechanisms spaced apart along the first direction, and each set of lifting mechanisms is capable of transmitting the vehicle in the vertical direction.

3. The solar cell string transmission device according to claim 1, characterized in that: The carrier is made of a rigid material and has a horizontal surface for supporting the battery string; the carrier has at least two such carriers.

4. The solar cell string transmission device according to claim 1, characterized in that: Along the second direction, the width of the vehicle is less than the distance between the two first tracks, and the width of the vehicle is greater than the distance between the two second tracks; the first transmission mechanism further includes a motion component, which is movably connected to the first track along the extension direction of the first track, and at least one set of the motion component is provided on each first track, and each set of the motion component is capable of connecting to the vehicle and driving the vehicle to move along the first direction.

5. The solar cell string transmission device according to claim 4, characterized in that: The lifting mechanism includes a lifting platform, which is capable of relative movement in the vertical direction. The lifting platform has a first position and a second position. When the lifting platform is in the first position, it is supported under the vehicle connected to the motion component. When the lifting platform is in the second position, the upper surface of the lifting platform is lower than the lower surface of the vehicle connected to the second track.

6. The solar cell string transmission device according to claim 1, characterized in that: The second side walls of the vehicle have positioning grooves, and each set of the motion components includes a positioning member. The positioning member is connected to the pushing member. When the pushing member abuts against the side wall of the vehicle, the positioning member is engaged in the positioning groove.

7. The solar cell string transmission device according to claim 1, characterized in that: The first transmission mechanism further includes a motion component, which is movably connected to the first track along the extension direction of the first track. Each first track is provided with at least two sets of the motion components, and the two sets of the motion components are simultaneously connected to one side of the vehicle.

8. The solar cell string transmission device according to claim 1, characterized in that: The second transmission mechanism includes a transmission belt, with a loop of the transmission belt wrapped around the periphery of each of the second tracks. The second transmission mechanism also includes a drive device for driving at least one of the transmission belts to rotate, with the rotation axis of the transmission belts extending along the second direction.

9. The solar cell string transmission device according to any one of claims 1 to 8, characterized in that: The carrier can carry multiple sets of battery strings at the same time. Each set of battery strings extends along the first direction. The multiple sets of battery strings are arranged side by side along the second direction, which extends horizontally and is perpendicular to the first direction.

10. A method for transmitting solar cell strings, used for transmitting a solar cell string along a first horizontal direction, characterized in that, The transmission method is implemented based on the solar cell string transmission device according to any one of claims 1 to 9, wherein the transmission method comprises the following steps in sequence: S1. The battery string is placed on a carrier, and the carrier moves along the first direction; S2. When the carrier moves to the unloading station, the battery string is removed from the carrier; S3. The vehicle descends; S4. The vehicle moves in the opposite direction to the first direction; S5. The vehicle rises, and then S1 is repeated.

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