BC battery string piece arranging method and piece arranging device

Abstract

The invention discloses a BC battery string sheet arranging method and device, and the method comprises the steps: alternately conveying first battery sheets and second battery sheets, and forming a plurality of groups of battery sheet groups which are formed by the arrangement of n first battery sheets and n second battery sheets in a staggered manner; when the ith battery piece group is arranged, the first battery piece or the second battery piece at one end of the ith battery piece group moves to the other end of the ith battery piece group in the arrangement direction, or the n first battery pieces and the n second battery pieces in the ith battery piece group rotate by 180 degrees; or when the (i + 1) th battery piece group is arranged, the first battery piece or the second battery piece at one end of the (i + 1) th battery piece group moves to the other end of the battery piece group in the arrangement direction, or the n first battery pieces and the n second battery pieces in the (i + 1) th battery piece group rotate by 180 degrees.

Description

Technical Field

[0001] The present invention relates to the technical field of BC battery strings, and in particular to a method for arranging BC battery strings and a sheet layout device. Background Art

[0002] Due to the structure without grid lines on the light-facing surface of the BC battery string (back contact battery string), sunlight can be fully utilized, making it have higher efficiency. When preparing a photovoltaic module using BC battery strings composed of half-cell wafers with an even number of grid lines and an even number of pieces, during the flush layout process, it is found that the solder tape of some BC battery strings cannot be welded near the bending area of the bent bus bar. If some BC battery strings are translated and avoided, the overall aesthetics of the photovoltaic module will be poor.

[0003] In related technologies, since two different half-cell wafers will be obtained after wafer scribing, when welding BC battery strings, based on the unchanged arrangement of the solder tape group, by adjusting the arrangement of multiple wafers (as shown in Figure 1 ), two different string types of BC battery strings can be obtained. Using these two BC battery strings to layout the photovoltaic module can solve the problem of avoiding the bending area of the bent bus bar. In order to realize the continuous production of BC battery strings and photovoltaic modules, there is an urgent need for a sheet arrangement method to realize the cyclic production of two different string types of BC battery strings. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for arranging BC battery strings to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: On the one hand, the present application provides a method for arranging BC battery strings, including: The first wafer and the second wafer are alternately conveyed, and multiple groups of wafer groups are formed in which n first wafers and n second wafers are arranged alternately; When arranging the i-th group of the wafer groups, in the arrangement direction, the first wafer or the second wafer at one end of the i-th group of the wafer groups moves to the other end of the i-th group of the wafer groups, or, the n first wafers and n second wafers in the i-th group of the wafer groups are all rotated 180°; Or, when arranging the battery cell group of the (i + 1)-th group, along the arrangement direction, the first battery cell or the second battery cell at one end of the battery cell group of the (i + 1)-th group moves to the other end of the battery cell group, or, n first battery cells and n second battery cells in the battery cell group of the (i + 1)-th group are all rotated by 180°; wherein, the value range of i is the set of positive odd numbers, n > 1, n is an integer, the number of grid lines of the first battery cell and the number of grid lines of the second battery cell are both even numbers, and the grid line arrangement after the first battery cell is rotated by 180° is the same as the grid line arrangement of the second battery cell.

[0006] Preferably, in the step of alternately conveying the first battery cell and the second battery cell and forming multiple groups of the battery cell groups in which n first battery cells and n second battery cells are alternately arranged, it includes: Taking a first battery cells and a second battery cells alternately arranged as a group and conveying them in sequence for c times, and finally taking (n - ca) first battery cells and (n - ca) second battery cells alternately arranged as a group for conveying, and forming multiple groups of the battery cell groups in this cycle, wherein, a ≥ 1, c ≥ 1, ca ≤ n, and a and c are both integers.

[0007] Preferably, in the step of alternately conveying the first battery cell and the second battery cell and forming multiple groups of the battery cell groups in which n first battery cells and n second battery cells are alternately arranged, it includes: Taking a first battery cells and b second battery cells alternately arranged as a group and conveying them in sequence for c times, and finally taking (n - ca) first battery cells and (n - cb) second battery cells alternately arranged as a group for conveying, and forming multiple groups of the battery cell groups in this cycle, wherein, a ≥ 1, b ≥ 0, c ≥ 1, ca ≤ n, cb ≤ n, a, b and c are all integers, and the difference between a and b is 1 or -1.

[0008] Preferably, in the step of moving the first battery cell or the second battery cell at one end of the i-th group of the battery cell group to the other end of the i-th group of the battery cell group along the arrangement direction when arranging the i-th group of the battery cell group, it includes: Moving the first battery cell or the second battery cell at one end of the i-th group of the battery cell group to the buffer station, moving the remaining i-th group of the battery cell group to the sheet laying station, and moving the first battery cell or the second battery cell at the buffer station to the other end of the i-th group of the battery cell group; Or, when the i-th group of the battery cell groups moves to the sheet laying station, while moving the first battery cell or the second battery cell at one end of the i-th group of the battery cell groups to the other end of the i-th group of the battery cell groups, the remaining i-th group of the battery cell groups moves a preset distance along the arrangement direction or the direction opposite to the arrangement direction.

[0009] Preferably, when arranging the (i + 1)-th group of the battery cell groups, in the step of moving the first battery cell or the second battery cell at one end of the (i + 1)-th group of the battery cell groups to the other end of the battery cell group along the arrangement direction, it includes: Moving the first battery cell or the second battery cell at one end of the (i + 1)-th group of the battery cell groups to the buffer station, moving the remaining (i + 1)-th group of the battery cell groups to the sheet laying station, and moving the first battery cell or the second battery cell at the buffer station to the other end of the (i + 1)-th group of the battery cell groups; Or, when the (i + 1)-th group of the battery cell groups moves to the sheet laying station, while moving the first battery cell or the second battery cell at one end of the (i + 1)-th group of the battery cell groups to the other end of the (i + 1)-th group of the battery cell groups, the remaining (i + 1)-th group of the battery cell groups moves a preset distance along the arrangement direction or the direction opposite to the arrangement direction.

[0010] Preferably, when arranging the i-th group of the battery cell groups, in the step of rotating 180° both the n first battery cells and the n second battery cells in the i-th group of the battery cell groups, it includes: The i-th group of the battery cell groups is located at the sheet laying station, and both the n first battery cells and the n second battery cells in the i-th group of the battery cell groups rotate 180°; Or, both the n first battery cells and the n second battery cells in the i-th group of the battery cell groups rotate 180°, and then the i-th group of the battery cell groups is moved to the sheet laying station.

[0011] On the other hand, the present application also provides a sheet laying device for implementing the above-mentioned BC battery string sheet arrangement method, including: A feeding mechanism for alternately conveying the first battery cell and the second battery cell; A sheet carrying mechanism for sequentially carrying the i-th group of the battery cell groups and the (i + 1)-th group of the battery cell groups; The film arranging mechanism is used to move the first cell or the second cell at one end of the i-th group of the cell groups or the (i + 1)-th group of the cell groups carried on the carrier mechanism to the other end of the i-th group of the cell groups, or to rotate 180° both n first cells and n second cells in the i-th group of the cell groups or the (i + 1)-th group of the cell groups.

[0012] Preferably, the loading mechanism includes a first loading table and a second loading table. Both the first loading table and the second loading table can carry s first cells and t second cells arranged alternately. The first loading table and the second loading table can circularly transport s first cells and t second cells to the carrier mechanism, where s < n, t < n, s > 0, t > 0, s and t are both integers, and the difference between the two is 0 or 1.

[0013] Preferably, the film arranging mechanism includes a driving member and a suction hand. The driving end of the driving member is connected to the suction hand. The driving member is arranged on the carrier mechanism. The driving member is used to drive the suction hand to move the first cell or the second cell at one end of the i-th group of the cell groups or the (i + 1)-th group of the cell groups carried on the carrier mechanism to the other end of the i-th group of the cell groups.

[0014] Preferably, the film arranging mechanism includes a lifting driving member, a rotating driving member, and 2n supporting platforms. The lifting driving member is arranged on the carrier mechanism. The rotating driving member is arranged on the driving end of the lifting driving member. The 2n supporting platforms are arranged in an array and are all arranged on the driving end of the rotating driving member. The 2n supporting platforms can correspond to and face n first cells and n second cells arranged alternately on the carrier mechanism one by one.

[0015] The technical solution adopted in this application can achieve the following beneficial effects: In a BC cell string film arranging method disclosed in this application, it includes: The first cells and the second cells are alternately conveyed and form multiple groups of cell groups in which n first cells and n second cells are arranged alternately.

[0016] When arranging the i-th group of cell groups, along the arranging direction, the first cell or the second cell at one end of the i-th group of cell groups is moved to the other end of the i-th group of cell groups, or both n first cells and n second cells in the i-th group of cell groups are rotated 180°; Or, when arranging the battery cell group of the (i + 1)-th group, along the arrangement direction, the first battery cell or the second battery cell at one end of the battery cell group of the (i + 1)-th group moves to the other end of the battery cell group, or, the n first battery cells and the n second battery cells in the battery cell group of the (i + 1)-th group are all rotated by 180°.

[0017] Wherein, the value range of i is the set of positive odd numbers, n > 1, n is an integer, both the first battery cell and the second battery cell are even-grid battery cells, and the grid line arrangement after the first battery cell is rotated by 180° is the same as the grid line arrangement of the second battery cell.

[0018] In this step, if the battery cell group of the i-th group starts with the first battery cell, and the first battery cell and the second battery cell are alternately conveyed to complete the staggered arrangement of n first battery cells and n second battery cells, then when arranging the battery cell group of the (i + 1)-th group, the first battery cell is still conveyed first. Along the arrangement direction, the first battery cell at one end of the battery cell group of the (i + 1)-th group needs to move to the other end of the battery cell group, or, the n first battery cells and the n second battery cells in the battery cell group of the (i + 1)-th group are all rotated by 180° to complete the staggered arrangement of n second battery cells and n first battery cells starting with the second battery cell. Similarly, if the battery cell group of the i-th group starts with the second battery cell, the above steps remain unchanged, that is, the second battery cell at one end of the battery cell group of the (i + 1)-th group moves to the other end of the battery cell group, or, the n first battery cells and the n second battery cells in the battery cell group of the (i + 1)-th group are all rotated by 180°; similarly, if the battery cell group of the (i + 1)-th group starts with the first battery cell, and the first battery cell and the second battery cell are alternately conveyed to complete the staggered arrangement of n first battery cells and n second battery cells, then when arranging the battery cell group of the i-th group, the first battery cell is conveyed first. Along the arrangement direction, the first battery cell at one end of the battery cell group of the i-th group needs to move to the other end of the battery cell group, or, the n first battery cells and the n second battery cells in the battery cell group of the i-th group are all rotated by 180° to complete the staggered arrangement of n second battery cells and n first battery cells starting with the second battery cell. Similarly, if the battery cell group of the (i + 1)-th group starts with the second battery cell, the above steps remain unchanged, that is, the second battery cell at one end of the battery cell group of the i-th group moves to the other end of the battery cell group, or, the n first battery cells and the n second battery cells in the battery cell group of the i-th group are all rotated by 180°.

[0019] It should be noted that both the first battery cell and the second battery cell are even-grid battery cells, the grid line arrangement after the first battery cell is rotated by 180° is the same as the grid line arrangement of the second battery cell, the sum of the number of first battery cells and the number of second battery cells in the battery cell group of the i-th group is an even number, and similarly, the sum of the number of first battery cells and the number of second battery cells in the battery cell group of the (i + 1)-th group is also an even number.

[0020] In the above method, along the arrangement direction, whether the first cell or the second cell is the first cell of the first group of cell groups, when the first cell and the second cell are alternately conveyed, two different sheet arrangement methods can be alternately realized, so as to ensure the continuous production of BC cell strings and photovoltaic modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0022] Figure 1 Schematic diagrams of two different sheet arrangement types of BC cell strings in the related art; Figure 2 Schematic diagram of the steps of the first sheet arrangement method in the BC cell string sheet arrangement method disclosed in the embodiment of the present application; Figure 3 Schematic diagram of the steps of the second sheet arrangement method in the BC cell string sheet arrangement method disclosed in the embodiment of the present application; Figure 4 Schematic diagram of the steps of the third sheet arrangement method in the BC cell string sheet arrangement method disclosed in the embodiment of the present application; Figure 5 Schematic diagram of the steps of the fourth sheet arrangement method in the BC cell string sheet arrangement method disclosed in the embodiment of the present application; Figure 6 Schematic diagram of the steps of circularly arranging sheets in groups of 4 cells in the BC cell string sheet arrangement method disclosed in the embodiment of the present application; Figure 7 Schematic diagram of the steps of circularly arranging sheets in groups of 6 cells in the BC cell string sheet arrangement method disclosed in the embodiment of the present application; Figure 8 Schematic diagram of the structure of the sheet arrangement device disclosed in the embodiment of the present application.

[0023] In the figure: 100, loading mechanism; 110, first loading table; 120, second loading table; 200, wafer carrier mechanism; 300, sheet arrangement mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] In the overall automated process of photovoltaic modules, while ensuring the current maximum conversion efficiency, the layout process realizes circuit connection by arranging two different even-numbered strings of battery cells. The solder tapes of the two different strings of battery cells are arranged in the same way, but the ways of arranging the battery cells are different. If one of the two different ways of arranging the battery cells is produced at intervals, it will lead to problems of discontinuity and waiting in the subsequent process. Instead, by alternately circulating two different types of battery cell arrangements in the string-making link to prepare two strings of battery cells, it is beneficial for the subsequent layout machine to continuously perform layout, thereby ensuring the efficiency of automation. As Figures 2 to 7 shown, the present application discloses a method for arranging BC battery strings, and the disclosed method for arranging BC battery strings includes: S1. The first battery cell and the second battery cell are alternately conveyed and form multiple groups of battery cell groups in which n first battery cells and n second battery cells are alternately arranged.

[0028] S2. When arranging the i-th group of battery cell groups, in the arrangement direction, the first battery cell or the second battery cell at one end of the i-th group of battery cell groups moves to the other end of the i-th group of battery cell groups, or, the n first battery cells and the n second battery cells in the i-th group of battery cell groups are all rotated 180°; Or, when arranging the (i + 1)-th group of battery cell groups, in the arrangement direction, the first battery cell or the second battery cell at one end of the (i + 1)-th group of battery cell groups moves to the other end of the battery cell group, or, the n first battery cells and the n second battery cells in the (i + 1)-th group of battery cell groups are all rotated 180°.

[0029] Among them, the value range of i is the set of positive odd numbers, n > 1, n is an integer, both the first solar cell and the second solar cell are even-grid solar cells, and the grid line arrangement after the first solar cell is rotated by 180° is the same as that of the second solar cell.

[0030] In this step, if the solar cell group of the i-th group takes the first solar cell as the first piece, and the first solar cell and the second solar cell are alternately conveyed to complete the staggered arrangement of n first solar cells and n second solar cells, then when arranging the solar cell group of the (i + 1)-th group, the first solar cell is still conveyed first. Along the arrangement direction, it is necessary to move the first solar cell at one end of the solar cell group of the (i + 1)-th group to the other end of the solar cell group, or rotate 180° both the n first solar cells and the n second solar cells in the solar cell group of the (i + 1)-th group to complete the staggered arrangement of n second solar cells and n first solar cells with the second solar cell as the first piece. Similarly, if the solar cell group of the i-th group takes the second solar cell as the first piece, the above steps remain unchanged, that is, move the second solar cell at one end of the solar cell group of the (i + 1)-th group to the other end of the solar cell group, or rotate 180° both the n first solar cells and the n second solar cells in the solar cell group of the (i + 1)-th group; similarly, if the solar cell group of the (i + 1)-th group takes the first solar cell as the first piece, and the first solar cell and the second solar cell are alternately conveyed to complete the staggered arrangement of n first solar cells and n second solar cells, then when arranging the solar cell group of the i-th group, the first solar cell is conveyed first. Along the arrangement direction, it is necessary to move the first solar cell at one end of the solar cell group of the i-th group to the other end of the solar cell group, or rotate 180° both the n first solar cells and the n second solar cells in the solar cell group of the i-th group to complete the staggered arrangement of n second solar cells and n first solar cells with the second solar cell as the first piece. Similarly, if the solar cell group of the (i + 1)-th group takes the second solar cell as the first piece, the above steps remain unchanged, that is, move the second solar cell at one end of the solar cell group of the i-th group to the other end of the solar cell group, or rotate 180° both the n first solar cells and the n second solar cells in the solar cell group of the i-th group.

[0031] It should be noted that both the first solar cell and the second solar cell are even-grid solar cells, the grid line arrangement after the first solar cell is rotated by 180° is the same as that of the second solar cell, the sum of the number of first solar cells and the number of second solar cells in the solar cell group of the i-th group is even, and similarly, the sum of the number of first solar cells and the number of second solar cells in the solar cell group of the (i + 1)-th group is also even.

[0032] In the above method, along the arrangement direction, whether the first solar cell or the second solar cell is the first piece of the solar cell group of the first group, in the case of alternating conveyance of the first solar cell and the second solar cell, two different cloth piece methods can be alternately used to complete two cloth piece structures, so as to ensure the continuous production of BC battery strings and photovoltaic modules.

[0033] In an alternative solution, in the step of alternately conveying the first battery cells and the second battery cells and forming multiple groups of battery cell groups in which n first battery cells and n second battery cells are alternately arranged, it may include: S11. Alternately arrange a first battery cells and b second battery cells as a group, and convey them in sequence c times. In the last conveyance, alternately arrange (n - ca) first battery cells and (n - cb) second battery cells as a group. Repeat this process to form multiple groups of battery cell groups, where a ≥ 1, b ≥ 1, c ≥ 1, ca ≤ n, cb ≤ n, a, b, and c are all integers, and the difference between a and b is 0.

[0034] In this step, since a ≥ 1, b ≥ 1, a + b ≤ 2n, a and b are both integers, and the difference between a and b is 0, that is to say, the first battery cells and the second battery cells are alternately conveyed in an even number. For example, the first battery cells and the second battery cells are alternately arranged in groups of 2, 4, 6, 8, etc. each, thereby improving the sheet arranging efficiency.

[0035] In another alternative solution, in the step of alternately conveying the first battery cells and the second battery cells and forming multiple groups of battery cell groups in which n first battery cells and n second battery cells are alternately arranged, it includes: S12. Alternately arrange a first battery cells and b second battery cells as a group, and convey them in sequence c times. In the last conveyance, alternately arrange (n - ca) first battery cells and (n - cb) second battery cells as a group. Repeat this process to form multiple groups of battery cell groups, where a ≥ 1, b ≥ 0, c ≥ 1, ca ≤ n, cb ≤ n, a, b, and c are all integers, and the difference between a and b is 1 or -1.

[0036] In this step, since a ≥ 1, b ≥ 0, a + b ≤ 2n, a and b are both integers, and the difference between a and b is 1 or -1, that is to say, one of the first battery cells and the second battery cells is alternately conveyed in an even number, and the other is alternately conveyed in an odd number. For example, one of the first battery cells and the second battery cells is alternately arranged in groups of 1, 2, 3, 4, 5, 6, etc., and the other is alternately arranged in groups of 0, 1, 2, 3, 4, 5, etc., thereby improving the sheet arranging efficiency.

[0037] In the embodiment of the present application, in the step of moving the first battery cell or the second battery cell at one end of the i-th group of battery cell groups to the other end of the i-th group of battery cell groups along the arrangement direction, it may include: S21. Move the first cell or the second cell at one end of the i-th cell group to the buffer station, move the remaining i-th cell group to the sheet placement station, and move the first cell or the second cell at the buffer station to the other end of the i-th cell group; Or, move the i-th cell group to the sheet placement station. While moving the first cell or the second cell at one end of the i-th cell group to the other end of the i-th cell group, move the remaining i-th cell group a preset distance along the arrangement direction or the direction opposite to the arrangement direction.

[0038] In this step, by further setting the sheet placement station, the sheet arrangement of the i-th cell group can be realized in two ways, that is, before or after the i-th cell group moves to the sheet placement station, move the first cell or the second cell at one end of the i-th cell group to the other end of the i-th cell group. The operation is simple and fast. Among them, the preset distance is the sum of the length of one of the gaps formed by the staggered arrangement of n first cells and n second cells and the length of the first cell or the second cell along the whole column direction.

[0039] In the embodiment of the present application, when arranging the (i + 1)-th cell group, in the step of moving the first cell or the second cell at one end of the (i + 1)-th cell group to the other end of the cell group along the arrangement direction, it may include: S22. Move the first cell or the second cell at one end of the (i + 1)-th cell group to the buffer station, move the remaining (i + 1)-th cell group to the sheet placement station, and move the first cell or the second cell at the buffer station to the other end of the (i + 1)-th cell group. Or, move the (i + 1)-th cell group to the sheet placement station. While moving the first cell or the second cell at one end of the (i + 1)-th cell group to the other end of the (i + 1)-th cell group, move the remaining (i + 1)-th cell group a preset distance along the arrangement direction or the direction opposite to the arrangement direction.

[0040] In this step, by further setting the sheet placement station, the sheet arrangement of the (i + 1)-th cell group can be realized in two ways, that is, before or after the (i + 1)-th cell group moves to the sheet placement station, move the first cell or the second cell at one end of the i-th cell group to the other end of the (i + 1)-th cell group. The operation is simple and fast. Among them, the preset distance is the sum of the length of one of the gaps formed by the staggered arrangement of n first cells and n second cells and the length of the first cell or the second cell along the whole column direction.

[0041] In the embodiment of the present application, when arranging the i-th group of cell groups, in the step of rotating the n first cells and the n second cells in the i-th group of cell groups by 180°, it may include: S23. The i-th group of cell groups is located at the sheet placement station, and the n first cells and the n second cells in the i-th group of cell groups are both rotated by 180°; or, the n first cells and the n second cells in the i-th group of cell groups are both rotated by 180°, and then the i-th group of cell groups is moved to the sheet placement station.

[0042] In the above steps, by rotating the n first cells and the n second cells in the i-th group of cell groups by 180° at the sheet placement station, problems such as the overall position shifting caused by transporting and moving the first cell or the second cell at one end of the i-th group of cell groups are avoided, ensuring the accuracy of the positions of the n first cells and the n second cells at the sheet placement station.

[0043] As Figure 8 shown, the present application also discloses a sheet placement device for implementing the above-mentioned BC cell string sheet arrangement method. The disclosed sheet placement device includes: a loading mechanism 100 for alternately conveying first cells and second cells; a carrier mechanism 200 for successively carrying the i-th group of cell groups and the (i + 1)-th group of cell groups; a sheet arrangement mechanism 300 for moving the first cell or the second cell at one end of the i-th group of cell groups or the (i + 1)-th group of cell groups carried on the carrier mechanism 200 to the other end of the i-th group of cell groups, or rotating the n first cells and the n second cells in the i-th group of cell groups or the (i + 1)-th group of cell groups by 180°.

[0044] During the use of the sheet placement device, the loading mechanism 100 continuously conveys the first cells and the second cells arranged alternately to the carrier mechanism 200, and the sheet arrangement mechanism 300 moves the first cell or the second cell at one end of the i-th group of cell groups or the (i + 1)-th group of cell groups carried on the carrier mechanism 200 to the other end of the i-th group of cell groups, or rotates the n first cells and the n second cells in the i-th group of cell groups or the (i + 1)-th group of cell groups by 180°, so that multiple groups of cell groups can be alternately and circularly arranged on the carrier mechanism 200.

[0045] In the embodiment of the present application, the feeding mechanism 100 may include a first feeding table 110 and a second feeding table 120. Specifically, both the first feeding table 110 and the second feeding table 120 can carry s first battery cells and t second battery cells arranged alternately. The first feeding table 110 and the second feeding table 120 can cyclically transport s first battery cells and t second battery cells to the wafer carrier mechanism 200, where s < n, t < n, s > 0, t > 0, s and t are both integers, and the difference between the two is 0 or 1.

[0046] In the above structure, the first feeding table 110 and the second feeding table 120 need to complete two actions of lifting and translation. Any one of the first feeding table 110 and the second feeding table 120 may include a suction table, a lifting drive assembly, and a translation drive assembly. The lifting drive assembly is provided at the drive end of the translation drive assembly, and the suction table is provided at the drive end of the lifting drive assembly. The lifting drive assembly can be a cylinder, an electric cylinder, a motor cooperating with a lead screw, etc. In the embodiment of the present application, the sheet arranging mechanism 300 may include a driving member and a suction hand. Specifically, the drive end of the driving member is connected to the suction hand. The driving member is provided on the wafer carrier mechanism 200. The driving member is used to drive the suction hand to move the first battery cell or the second battery cell at one end of the i-th group of battery cell groups or the (i + 1)-th group of battery cell groups carried on the wafer carrier mechanism 200 to the other end of the i-th group of battery cell groups.

[0047] In the embodiment of the present application, the sheet arranging mechanism 300 may include a lifting drive member, a rotation drive member, and 2n support platforms. Specifically, the lifting drive member is provided on the wafer carrier mechanism 200, the rotation drive member is provided at the drive end of the lifting drive member, and the 2n support platforms are arranged in an array and are all provided at the drive end of the rotation drive member. The 2n support platforms can correspond one-to-one to the n first battery cells and n second battery cells arranged alternately and carried on the wafer carrier mechanism 200.

[0048] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for arranging BC battery chips, characterized in that, Including: The first solar cells and the second solar cells are alternately conveyed to form multiple groups of solar cell groups in which n of the first solar cells and n of the second solar cells are arranged in an interleaved manner; When arranging the i-th group of the solar cell groups, in the arrangement direction, the first solar cell or the second solar cell at one end of the i-th group of the solar cell groups moves to the other end of the i-th group of the solar cell groups, or, n of the first solar cells and n of the second solar cells in the i-th group of the solar cell groups are all rotated by 180°; Or, when arranging the (i + 1)-th group of the solar cell groups, in the arrangement direction, the first solar cell or the second solar cell at one end of the (i + 1)-th group of the solar cell groups moves to the other end of the solar cell group, or, n of the first solar cells and n of the second solar cells in the (i + 1)-th group of the solar cell groups are all rotated by 180°; Wherein, the value range of i is the set of positive odd numbers, n > 1, n is an integer, the number of grid lines of the first solar cell and the number of grid lines of the second solar cell are both even numbers, and the grid line arrangement after the first solar cell is rotated by 180° is the same as the grid line arrangement of the second solar cell.

2. The BC cell string arranging method according to claim 1, wherein In the step of alternately conveying the first solar cells and the second solar cells and forming multiple groups of the solar cell groups in which n of the first solar cells and n of the second solar cells are arranged in an interleaved manner, it includes: Taking a of the first solar cells and a of the second solar cells arranged alternately as a group and conveying them in sequence c times, and finally taking (n - ca) of the first solar cells and (n - ca) of the second solar cells arranged alternately as a group for conveying, and forming multiple groups of the solar cell groups in this cycle, Wherein, a ≥ 1, c ≥ 1, ca ≤ n, and a and c are both integers.

3. The BC cell string arranging method according to claim 1, wherein In the step of alternately conveying the first solar cells and the second solar cells and forming multiple groups of the solar cell groups in which n of the first solar cells and n of the second solar cells are arranged in an interleaved manner, it includes: Taking a of the first solar cells and b of the second solar cells arranged alternately as a group and conveying them in sequence c times, and finally taking (n - ca) of the first solar cells and (n - cb) of the second solar cells arranged alternately as a group for conveying, and forming multiple groups of the solar cell groups in this cycle, Wherein, a ≥ 1, b ≥ 0, c ≥ 1, ca ≤ n, cb ≤ n, a, b and c are all integers, and the difference between a and b is 1 or -1.

4. The BC cell string arranging method according to claim 1, characterized in that In the step of, when arranging the i-th group of the solar cell groups, moving the first solar cell or the second solar cell at one end of the i-th group of the solar cell groups to the other end of the i-th group of the solar cell groups in the arrangement direction, it includes: Moving the first solar cell or the second solar cell at one end of the i-th group of the solar cell groups to the buffer station, moving the remaining i-th group of the solar cell groups to the sheet layout station, and moving the first solar cell or the second solar cell at the buffer station to the other end of the i-th group of the solar cell groups; Alternatively, when the i-th group of the battery cell groups is moved to the sheet laying station, while moving the first battery cell or the second battery cell at one end of the i-th group of the battery cell groups to the other end of the i-th group of the battery cell groups, the remaining battery cell groups of the i-th group are moved a preset distance along the arrangement direction or the direction opposite to the arrangement direction.

5. The BC cell string arranging method according to claim 1, characterized in that When arranging the (i + 1)-th group of the battery cell groups, in the step of moving the first battery cell or the second battery cell at one end of the (i + 1)-th group of the battery cell groups to the other end of the battery cell group along the arrangement direction, it includes: Moving the first battery cell or the second battery cell at one end of the (i + 1)-th group of the battery cell groups to the buffer station, moving the remaining battery cell groups of the (i + 1)-th group to the sheet laying station, and moving the first battery cell or the second battery cell at the buffer station to the other end of the (i + 1)-th group of the battery cell groups; Alternatively, when the (i + 1)-th group of the battery cell groups is moved to the sheet laying station, while moving the first battery cell or the second battery cell at one end of the (i + 1)-th group of the battery cell groups to the other end of the (i + 1)-th group of the battery cell groups, the remaining battery cell groups of the (i + 1)-th group are moved a preset distance along the arrangement direction or the direction opposite to the arrangement direction.

6. The BC cell string arranging method according to claim 1, wherein, When arranging the i-th group of the battery cell groups, in the step of rotating 180° for all of the n first battery cells and the n second battery cells in the i-th group of the battery cell groups, it includes: The i-th group of the battery cell groups is located at the sheet laying station, and all of the n first battery cells and the n second battery cells in the i-th group of the battery cell groups are rotated 180°; Alternatively, all of the n first battery cells and the n second battery cells in the i-th group of the battery cell groups are rotated 180°, and then the i-th group of the battery cell groups is moved to the sheet laying station.

7. A cloth sheet device for implementing the BC cell stringing method according to any one of claims 1 to 6, characterized in that, It includes: A feeding mechanism (100) for alternately conveying the first battery cell and the second battery cell; A wafer carrier mechanism (200) for sequentially carrying the i-th group of the battery cell groups and the (i + 1)-th group of the battery cell groups; A sheet arranging mechanism (300) for moving the first battery cell or the second battery cell at one end of the i-th group of the battery cell groups or the (i + 1)-th group of the battery cell groups carried on the wafer carrier mechanism (200) to the other end of the i-th group of the battery cell groups, or for rotating 180° all of the n first battery cells and the n second battery cells in the i-th group of the battery cell groups or the (i + 1)-th group of the battery cell groups.

8. The patch device according to claim 7, wherein, The feeding mechanism (100) includes a first feeding table (110) and a second feeding table (120). Both the first feeding table (110) and the second feeding table (120) can carry s first battery wafers and t second battery wafers arranged alternately. The first feeding table (110) and the second feeding table (120) can cyclically transport s first battery wafers and t second battery wafers to the wafer loading mechanism (200). Wherein, s < n, t < n, s > 0, t > 0, s and t are both integers, and the difference between the two is 0 or 1.

9. The patch device according to claim 7, wherein The wafer arranging mechanism (300) includes a driving member and a wafer sucking hand. The driving end of the driving member is connected to the wafer sucking hand. The driving member is arranged on the wafer loading mechanism (200). The driving member is used to drive the wafer sucking hand to move the first battery wafer or the second battery wafer at one end of the i-th group of battery wafer groups or the (i + 1)-th group of battery wafer groups carried on the wafer loading mechanism (200) to the other end of the i-th group of battery wafer groups.

10. The patch device according to claim 7, characterized in that, The wafer arranging mechanism (300) includes a lifting driving member, a rotating driving member and 2n supporting platforms. The lifting driving member is arranged on the wafer loading mechanism (200). The rotating driving member is arranged on the driving end of the lifting driving member. The 2n supporting platforms are arranged in an array and are all arranged on the driving end of the rotating driving member. The 2n supporting platforms can correspond to and face the n first battery wafers and n second battery wafers arranged alternately on the wafer loading mechanism (200) one by one.

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