A method for arranging a photovoltaic module solder strip

Abstract

The application provides a photovoltaic module welding strip arrangement method. The photovoltaic module comprises a plurality of positive cell strings and a plurality of negative cell strings. Each positive cell string and each negative cell string is staggered arranged along the width direction of the cell string. The current directions of the positive cell string and the negative cell string are opposite. A welding strip pulling mechanism can pull out a+1 first welding strips and b second welding strips along the length direction of the cell string. Each first welding strip and each second welding strip is alternately arranged in the width direction of the cell string. The welding strip pulling mechanism pulls out a first welding strip and b second welding strips required by the positive cell string, and prepares an A welding strip string arranged on the positive cell piece group. The welding strip pulling mechanism pulls out a first welding strip and b second welding strips required by the negative cell string, and prepares a B welding strip string arranged on the negative cell piece group. The application can be compatible with the preparation of the A welding strip string and the B welding strip string, reduce the design, manufacturing and installation costs, effectively improve the welding strip arrangement efficiency, and improve the equipment capacity.

Description

TECHNICAL FIELD

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

[0002] The photovoltaic module includes a plurality of positive cell strings and a plurality of negative cell strings, and each positive cell string and each negative cell string are arranged alternately along the width direction of the cell string. Figure 1 and Figure 2 As shown in the drawings, the current direction of the positive cell string is opposite to the current direction of the negative cell string. Figure 3 and Figure 4 As shown in the drawings, due to the different arrangement positions of the welding strips of the positive cell string and the negative cell string, the A welding strip string is arranged on the positive cell sheet group, and the B welding strip string is arranged on the negative cell sheet group, and the A welding strip string and the B welding strip string are in a mirror image relationship.

[0003] Generally, one photovoltaic module includes a plurality of positive cell strings and a plurality of negative cell strings, and each positive cell string and each negative cell string are arranged alternately along the width direction of the cell string, so that a plurality of A welding strip strings and a plurality of B welding strip strings need to be arranged in one photovoltaic module, and each A welding strip string and each B welding strip string are arranged alternately along the width direction of the cell string. In order to improve the production capacity of the equipment, welding strip preparation devices (including welding strip pulling mechanisms and welding strip preparation mechanisms) and welding strip carrying mechanisms are generally arranged on both sides of the equipment along the length direction of the cell string, wherein the welding strip preparation device on one side prepares the A welding strip string, the welding strip preparation device on the other side prepares the B welding strip string, the A welding strip string is carried and arranged on the positive cell sheet group by the welding strip carrying mechanism on the same side, and the B welding strip string is carried and arranged on the negative cell sheet group by the welding strip carrying mechanism on the same side. Due to the complex structure and large space occupied by the welding strip carrying mechanism currently used, the welding strip carrying mechanisms on both sides cannot be arranged in parallel, thereby affecting the production capacity of the welding strip arrangement equipment. SUMMARY

[0004] Therefore, the application provides a photovoltaic module welding strip arrangement method, which can effectively improve the welding strip arrangement efficiency, improve the production capacity of the equipment, and reduce the cost.

[0005] A photovoltaic module welding strip arrangement method, the photovoltaic module includes a plurality of positive cell strings and a plurality of negative cell strings, and each positive cell string and each negative cell string are arranged alternately along the width direction of the cell string, the current direction of the positive cell string is opposite to the current direction of the negative cell string, a+1 first welding strips and b second welding strips of a preset length can be pulled out along the length direction of the cell string by using a welding strip pulling mechanism, each first welding strip and each second welding strip are arranged alternately in the width direction of the cell string, and the photovoltaic module welding strip arrangement method comprises the following steps:

[0006] The pulling welding strip mechanism pulls out a first welding strip and a second welding strip required by the positive electrode battery string, and prepares an A welding strip string arranged on the positive electrode battery sheet group.

[0007] The pulling welding strip mechanism pulls out a first welding strip and a second welding strip required by the negative electrode battery string, and prepares a B welding strip string arranged on the negative electrode battery sheet group.

[0008] The A welding strip string and the B welding strip string are mirror images of each other.

[0009] Preferably, the pulling welding strip mechanism can simultaneously pull out a first welding strip and a second welding strip required by the positive electrode battery string, and / or the pulling welding strip mechanism can simultaneously pull out a first welding strip and a second welding strip required by the negative electrode battery string.

[0010] Preferably, the A welding strip string and the B welding strip string are prepared by a welding strip preparation mechanism, and the specific process is as follows:

[0011] The welding strip preparation mechanism cuts each first welding strip pulled out by the pulling welding strip mechanism into a plurality of first polarity welding strips, and cuts each second welding strip into a plurality of second polarity welding strips, and the cutting points of the first welding strips are staggered with the cutting points of the second welding strips.

[0012] The welding strip preparation mechanism changes the pitches of the first polarity welding strips and the second polarity welding strips along the length direction of the battery string, so that there is a preset interval between adjacent two first polarity welding strips and adjacent two second polarity welding strips in the length direction of the battery string.

[0013] Preferably, the welding strip preparation mechanism simultaneously cuts the a first welding strips and the b second welding strips pulled out by the pulling welding strip mechanism, so that each first welding strip is cut into a plurality of first polarity welding strips at the same time, and each second welding strip is cut into a plurality of second polarity welding strips at the same time; and / or,

[0014] The welding strip preparation mechanism simultaneously changes the pitches of the first polarity welding strips and the second polarity welding strips along the length direction of the battery string.

[0015] Preferably, the welding strip carrying mechanism is used to carry the A welding strip string to be arranged on the positive electrode battery sheet group and the B welding strip string to be arranged on the negative electrode battery sheet group, and the welding strip carrying mechanism can carry a+1 first polarity welding strips cut and changed in pitch and b second polarity welding strips cut and changed in pitch.

[0016] Preferably, after the positive electrode battery sheet group and the negative electrode battery sheet group are alternately arranged on the back plate along the width direction of the battery string, the A welding strip string is carried to be arranged on the positive electrode battery sheet group, and the B welding strip string is carried to be arranged on the negative electrode battery sheet group.

[0017] Preferably, along the width direction of the battery string, the back plate is provided with a pull-welding strip mechanism, a welding strip preparation mechanism and a welding strip conveying mechanism on both sides; the pull-welding strip mechanism and the welding strip preparation mechanism on each side can cooperate to prepare A-welding strip strings and B-welding strip strings, and the prepared A-welding strip strings are conveyed by the welding strip conveying mechanism on the same side and arranged on the positive electrode battery sheet group, and the prepared B-welding strip strings are conveyed by the welding strip conveying mechanism on the same side and arranged on the negative electrode battery sheet group.

[0018] Preferably, along the width direction of the battery string, the back plate is provided with a pull-welding strip mechanism, a welding strip preparation mechanism and a welding strip conveying mechanism on one side; the pull-welding strip mechanism and the welding strip preparation mechanism can cooperate to prepare A-welding strip strings and B-welding strip strings, and the welding strip conveying mechanism conveys the A-welding strip strings and arranges them on the positive electrode battery sheet group, and conveys the B-welding strip strings and arranges them on the negative electrode battery sheet group.

[0019] Preferably, the welding strip conveying mechanism conveys corresponding welding strip strings in sequence on corresponding battery sheet groups in the same direction.

[0020] The beneficial effects of the present application are that the pull-welding strip mechanism can pull out a+1 first welding strips and b second welding strips along the length direction of the battery string, and in the process of preparing the welding strip strings, the pull-welding strip mechanism pulls out a first welding strip and b second welding strips required by the positive electrode battery string, prepares A-welding strip strings arranged on the positive electrode battery sheet group, and pulls out a first welding strip and b second welding strips required by the negative electrode battery string, prepares B-welding strip strings arranged on the negative electrode battery sheet group, and by means of additional increase of one welding strip position, the same welding strip preparation device can be compatible with the preparation of A-welding strip strings and B-welding strip strings, the design, manufacturing and installation costs are reduced, the welding strip arrangement efficiency is effectively improved, and the equipment capacity is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0022] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the defined conditions under which the present application can be implemented, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0023] Figure 1Structure diagram of positive electrode battery string;

[0024] Figure 2 Structure diagram of negative electrode battery string;

[0025] Figure 3 Structure diagram of A solder strip string;

[0026] Figure 4 Structure diagram of B solder strip string;

[0027] Figure 5 Position relationship diagram of solder strip preparation device and whole plate battery string;

[0028] Figure 6 One of the ways to prepare A solder strip string and B solder strip string.

[0029] In the figure: 1-positive electrode battery string; 2-negative electrode battery string; 3-battery piece; 4-A solder strip string; 5-B solder strip string; 6-first polarity solder strip; 7-second polarity solder strip; 8-solder strip carrying mechanism. DETAILED DESCRIPTION

[0030] The embodiments in the application will be described in detail below with the accompanying drawings of the embodiments in the application. Obviously, the described embodiments are only part of the embodiments in the application, not all the embodiments in the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0031] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the application will be further described in detail below with the accompanying drawings and specific embodiments.

[0032] Generally, the solder strip preparation device includes a solder strip pulling mechanism and a solder strip preparation mechanism.

[0033] Reference Figures 1-6 The photovoltaic module includes a plurality of positive electrode battery strings 1 and a plurality of negative electrode battery strings 2, each positive electrode battery string 1 and each negative electrode battery string 2 are arranged alternately along the width direction of the battery string, and the current directions of the positive electrode battery string 1 and the negative electrode battery string 2 are opposite; a+1 first solder strips and b second solder strips of a preset length can be pulled out along the length direction of the battery string by using the solder strip pulling mechanism, each first solder strip and each second solder strip are arranged alternately in the width direction of the battery string, and the photovoltaic module solder strip arrangement method includes:

[0034] The solder strip pulling mechanism pulls out a+1 first solder strips and b second solder strips required by the positive electrode battery string 1, and prepares the A solder strip string 4 arranged on the positive electrode battery piece group;

[0035] The welding strip drawing mechanism draws a root of the first welding strip and b roots of the second welding strip required by the negative electrode battery string 2, and prepares the B welding strip string 5 arranged on the negative electrode battery piece group.

[0036] No matter the positive electrode battery piece group or the negative electrode battery piece group, both include a plurality of battery pieces 3 arranged in sequence along the length direction of the battery string, and have a first preset interval between adjacent two battery pieces 3. Wherein, the back surface of each battery piece 3 is provided with a first electrode row and a second electrode row, each first electrode row and each second electrode row are arranged alternately along the width direction of the battery string, and the polarity of the electrode rows of the adjacent two battery pieces 3 on the same straight line is opposite.

[0037] When the A welding strip string 4 is arranged on the positive electrode battery piece group, each welding strip in the A welding strip string 4 is welded on the corresponding electrode row of the corresponding battery piece in the positive electrode battery piece group by means of laser or resistance welding, etc., so as to prepare the positive electrode battery string 1; when the B welding strip string 5 is arranged on the negative electrode battery piece group, each welding strip in the B welding strip string 5 is welded on the corresponding electrode row of the corresponding battery piece in the negative electrode battery piece group by means of laser or resistance welding, etc., so as to prepare the negative electrode battery string 2.

[0038] Figure 1 The positive electrode battery string and Figure 2 The negative electrode battery string shown is in a mirror image relationship, and the current directions of the two are opposite. The battery piece 3 of the present application refers to a half piece.

[0039] The number of the welding strips drawn by the welding strip drawing mechanism of the present embodiment is one more than the number of the welding strips required for preparing the welding strip string, so that when preparing the A welding strip string 4, only a root of the first welding strip and b roots of the second welding strip required for preparing the A welding strip string 4 need to be drawn, and when preparing the B welding strip string 5, only a root of the first welding strip and b roots of the second welding strip required for preparing the B welding strip string 5 need to be drawn, so that the same device can prepare both the A welding strip string 4 and the B welding strip string 5.

[0040] For example, taking a 24-busbar battery assembly as an example for illustration, referring to Figure 6 Wherein, a=b=12, that is, the welding strip drawing mechanism can draw 13 first welding strips and 12 second welding strips, and each first welding strip is sequentially named as a1, a2, …, a12, a13, and each second welding strip is sequentially named as b1, b2, …, b12. The preparation of the A welding strip string 4 requires the first welding strips a1-a12 and the second welding strips b1-b12, and the corresponding welding strip drawing mechanism draws the first welding strips a1-a12 and the second welding strips b1-b12; the preparation of the B welding strip string 5 requires the first welding strips a2-a13 and the second welding strips b1-b12, and the corresponding welding strip drawing mechanism draws the first welding strips a2-a13 and the second welding strips b1-b12. After the required welding strips are drawn by the welding strip drawing mechanism, the preparation of the welding strip string is completed in cooperation with the welding strip preparation mechanism.

[0041] In the embodiment, the strip pulling mechanism can simultaneously pull out a first strip and b second strips required by the positive battery string 1, and / or the strip pulling mechanism can simultaneously pull out a first strip and b second strips required by the negative battery string 2.

[0042] That is, whether the A strip string 4 is prepared or the B strip string 5 is prepared, the strip pulling mechanism needs to pull out a first strip and b second strips, and the strip pulling mechanism can simultaneously pull out the a first strip and b second strips when pulling the strip. Of course, the strip pulling mechanism can not simultaneously pull out the a first strip and b second strips, for example, the a first strip can be pulled out first, and then the b second strip is pulled out, or part of the first strip and part of the second strip are pulled out, and then the remaining first strip and second strip are pulled out. In order to improve the efficiency, the a first strip and b second strips are simultaneously pulled out in the embodiment.

[0043] The process of preparing the A strip string 4 and the B strip string 5 by the strip preparation mechanism in the embodiment is as follows:

[0044] The strip preparation mechanism is controlled to cut each first strip pulled out by the strip pulling mechanism into a plurality of first polarity strips 6, and cut each second strip into a plurality of second polarity strips 7, and the cutting points of the first strips and the cutting points of the second strips are staggered, so as to form the first polarity strips 6 and the second polarity strips 7 arranged in a staggered manner.

[0045] The strip preparation mechanism is controlled to vary the pitches of the first polarity strips 6 and the second polarity strips 7 along the length direction of the battery string, so that there is a preset pitch between adjacent two first polarity strips 6 and adjacent two second polarity strips 7 in the length direction of the battery string.

[0046] Referring to Figure 3 and Figure 4 , the A strip string 4 arranged on the positive battery sheet group and the B strip string 5 arranged on the negative battery sheet group also have a mirror image relationship. For example, the plurality of first polarity strips 6 obtained by cutting the first strip in the A strip string 4 are negative strips, and the plurality of second polarity strips 7 obtained by cutting the second strip are positive strips, and correspondingly, the plurality of first polarity strips 6 obtained by cutting the first strip in the B strip string 5 are positive strips, and the plurality of second polarity strips 7 obtained by cutting the second strip are negative strips. If the existing method of preparing the strip string is used, two devices need to be used to prepare the A strip string 4 and the B strip string 5, which is low in efficiency and affects the production capacity.

[0047] In order to simultaneously adapt to the preparation of the A solder ribbon string 4 and the B solder ribbon string 5, the solder ribbon preparation mechanism of the embodiment can cut and distance a+1 first solder ribbons and b second solder ribbons. When preparing the A solder ribbon string 4, the a first solder ribbons and the b second solder ribbons required for preparing the A solder ribbon string 4 pulled out by the solder ribbon pulling mechanism are placed at the corresponding positions of the solder ribbon preparation mechanism, and then they are cut and distanced; when preparing the B solder ribbon string 5, the a first solder ribbons and the b second solder ribbons required for preparing the B solder ribbon string 5 pulled out by the solder ribbon pulling mechanism are placed at the corresponding positions of the solder ribbon preparation mechanism, and then they are cut and distanced.

[0048] For example, take a 24-busbar cell module as an example for description, continue to refer to Figure 6 The positions of placing a+1 first solder ribbons on the solder ribbon preparation mechanism are sequentially named as A1, A2, …, A12, A13, and the positions of placing b second solder ribbons on the solder ribbon preparation mechanism are sequentially named as B1, B2, …, B12. When preparing the A solder ribbon string 4, a1-a12 first solder ribbons pulled out by the solder ribbon pulling mechanism are sequentially placed at the A1-A12 positions, and b1-b12 second solder ribbons pulled out are sequentially placed at the B1-B12 positions, at this time, no solder ribbon is placed at the A13 position, then the solder ribbons are cut and distanced to obtain the A solder ribbon string 4; when preparing the B solder ribbon string 5, a2-a13 first solder ribbons pulled out by the solder ribbon pulling mechanism are sequentially placed at the A2-A13 positions, and b1-b12 second solder ribbons pulled out are sequentially placed at the B1-B12 positions, at this time, no solder ribbon is placed at the A1 position, then the solder ribbons are cut and distanced to obtain the B solder ribbon string 5.

[0049] The embodiment increases one solder ribbon position at the solder ribbon pulling mechanism and the solder ribbon preparation mechanism, and can simultaneously adapt to the preparation of the A solder ribbon string 4 and the B solder ribbon string 5.

[0050] In a further preferred embodiment, the solder ribbon preparation mechanism is controlled to simultaneously cut the a first solder ribbons and the b second solder ribbons pulled out by the solder ribbon pulling mechanism, so that each first solder ribbon is cut into a plurality of first polarity solder ribbons 6 at the same time, and each second solder ribbon is cut into a plurality of second polarity solder ribbons 7; and / or, the solder ribbon preparation mechanism is controlled to simultaneously distance each first solder ribbon and each second solder ribbon along the length direction of the cell string.

[0051] The cutters provided on the solder ribbon preparation mechanism for cutting the solder ribbons can simultaneously act, so that the a first solder ribbons and the b second solder ribbons placed on the solder ribbon preparation mechanism are simultaneously cut, so that the required staggered first polarity solder ribbons 6 and second polarity solder ribbons 7 of the cell string are simultaneously prepared, which is high in efficiency. Of course, the cutters can also not act at the same time, for example, the first solder ribbons are cut first, and then the second solder ribbons are cut.

[0052] After each solder strip is cut, the pitch-changing unit on the solder strip preparation mechanism can simultaneously change the pitch of each first polarity solder strip 6 and each second polarity solder strip 7 along the length direction of the battery string, so that there is a preset spacing between two adjacent first polarity solder strips 6 and two adjacent second polarity solder strips 7 in the length direction of the battery string.

[0053] Preferably, in this embodiment, a first solder strips and b second solder strips are pulled out simultaneously, and then the a first solder strips and b second solder strips are cut off at the same time, and the pitch is changed at the same time to improve the efficiency of preparing solder strip strings.

[0054] In this embodiment, a ribbon transport mechanism 8 is used to transport and arrange the A ribbon string 4 on the positive electrode cell group and the B ribbon string 5 on the negative electrode cell group. The ribbon transport mechanism can transport each of the first polarity ribbons 6 after the first ribbons are cut and the pitch is changed, and each of the second polarity ribbons 7 after the second ribbons are cut and the pitch is changed.

[0055] Typically, the solder ribbon handling mechanism 8 includes multiple gripping modules arranged along the length of the battery string. Each gripping module includes multiple gripping components arranged side-by-side along the length of the battery string. Each gripping component includes multiple gripper units arranged sequentially along the width of the battery string. The gripper units cooperate to grip the solder ribbon required for one battery string. In this embodiment, to accommodate the handling of solder ribbon string A 4 and solder ribbon string B 5, an additional gripper unit is provided in the corresponding gripping component. This allows both solder ribbon string A 4 and solder ribbon string B 5 to be handled by the corresponding gripper unit.

[0056] In one embodiment, after the positive electrode cell group and the negative electrode cell group are alternately arranged on the back plate along the width direction of the cell string, the A welding ribbon string 4 is transported and arranged on the positive electrode cell group, and the B welding ribbon string is transported and arranged on the negative electrode cell group.

[0057] like Figure 5 As shown, from bottom to top, the first string is arranged with A-type solder strip string 4 (A1 1), the second string is arranged with B-type solder strip string 5 (B22), the third string is arranged with A-type solder strip string 4 (A33), the fourth string is arranged with B-type solder strip string 5 (B44), the fifth string is arranged with A-type solder strip string 4 (A55), and the sixth string is arranged with B-type solder strip string 5 (B66).

[0058] The existing ribbon preparation equipment (including a ribbon pulling mechanism and a ribbon preparation mechanism) is arranged on both sides of the backplate along the width direction of the battery string. One ribbon preparation device can only prepare ribbon string A 4, and the other ribbon preparation device can only prepare ribbon string B 5. During the ribbon arrangement process, A11 and B44 can be arranged simultaneously, and A33 and B66 can be arranged simultaneously. However, due to the complex structure and large space occupied by the currently used ribbon handling mechanism, B22 and A55 cannot be arranged simultaneously. Therefore, it is not possible to achieve completely parallel arrangement of the ribbon handling mechanisms on both sides, which affects the production capacity of the ribbon arrangement equipment.

[0059] In one embodiment of this example, along the width direction of the battery string, both sides of the back plate are provided with a ribbon pulling mechanism, a ribbon preparation mechanism, and a ribbon transport mechanism 8. The ribbon pulling mechanism and the ribbon preparation mechanism on each side cooperate to produce A ribbon string 4 and B ribbon string 5. The prepared A ribbon string 4 is transported and arranged on the positive electrode cell group by the ribbon transport mechanism 8 on the same side, and the prepared B ribbon string 5 is transported and arranged on the negative electrode cell group by the ribbon transport mechanism 8 on the same side.

[0060] like Figure 5 As shown, the welding strip pulling mechanism and welding strip preparation mechanism on one side cooperate to first prepare welding strip string A 4, and then the welding strip transport mechanism 8 on that side transports and arranges it on A11. The welding strip pulling mechanism and welding strip preparation mechanism on that side then cooperate to prepare welding strip string B 5, and the welding strip transport mechanism 8 transports and arranges it on B22. Then welding strip string A 4 is prepared and arranged on A33. Correspondingly, the welding strip pulling mechanism and welding strip preparation mechanism on the other side cooperate to first prepare welding strip string B 5, and then the welding strip transport mechanism 8 on that side transports and arranges it on B44. Then welding strip string A 4 is prepared and transported and arranged on A55. Welding strip string B 5 is prepared and transported and arranged on B66.

[0061] During this process, the solder ribbon strings of A11 and B44 can be arranged simultaneously, the solder ribbon strings of B22 and A55 can be arranged simultaneously, and the solder ribbon strings of A33 and B66 can be arranged simultaneously, thereby improving the solder ribbon arrangement efficiency and increasing production capacity.

[0062] In another embodiment, along the width direction of the battery string, a welding strip pulling mechanism, a welding strip preparation mechanism, and a welding strip transporting mechanism 8 are provided on one side of the back plate. The welding strip pulling mechanism and the welding strip preparation mechanism cooperate to produce welding strip string A 4 and welding strip string B 5. The welding strip transporting mechanism 8 transports and arranges welding strip string A 4 on the positive electrode cell group and transports and arranges welding strip string B 5 on the negative electrode cell group.

[0063] The implementation method only needs to set a pull-welding strip mechanism, a welding strip preparation mechanism and a welding strip conveying mechanism 8 on the same side of the back plate. For example, the pull-welding strip mechanism and the welding strip preparation mechanism are matched to sequentially prepare the A welding strip string 4 arranged at A11, the B welding strip string 5 arranged at B22, the A welding strip string 4 arranged at A33, the B welding strip string 5 arranged at B44, the A welding strip string 4 arranged at A55, and the B welding strip string 5 arranged at B66 in sequence, and then the welding strip conveying mechanism 8 is used to arrange the prepared welding strip strings at the corresponding positions. Compared with the previous implementation method, this method can reduce the equipment space and save costs.

[0064] In the embodiment, preferably, no matter whether one welding strip conveying mechanism 8 or two welding strip conveying mechanisms 8 are arranged, each welding strip conveying mechanism 8 sequentially arranges the corresponding welding strip string on the corresponding battery piece group in the same direction. For example, when two welding strip conveying mechanisms are arranged, one of the welding strip conveying mechanisms sequentially arranges A11, B22 and A33, and the other welding strip conveying mechanism sequentially arranges B44, A55 and B66 in the same direction; when one welding strip conveying mechanism is arranged, the welding strip conveying mechanism sequentially arranges A11, B22, A33, B44, A55 and B66 in the same direction.

[0065] The photovoltaic module welding strip arrangement method provided in the application can increase one welding strip position at the pull-welding strip mechanism and the welding strip preparation mechanism, each pull-welding strip mechanism and welding strip preparation mechanism can be matched to prepare the A welding strip string 4 and the B welding strip string 5, and the preparation equipment for the A welding strip string 4 and the B welding strip string 5 does not need to be distinguished, thereby reducing the design, manufacturing and installation costs.

[0066] When the pull-welding strip mechanism, the welding strip preparation mechanism and the welding strip conveying mechanism 8 are arranged on both sides of the back plate along the length direction of the battery string, if the welding strips in the welding strip disc on one side are used up and the welding strip disc needs to be replaced, the pull-welding strip mechanism, the welding strip preparation mechanism and the welding strip conveying mechanism 8 on the other side can also be matched to complete the preparation of the whole-page welding strip string and the welding strip arrangement of the whole-page battery piece group, so that the equipment can not be stopped when the welding strip disc is replaced, and the equipment capacity is effectively improved. Correspondingly, if one or more devices of the pull-welding strip mechanism, the welding strip preparation mechanism and the welding strip conveying mechanism 8 on one side need to be maintained, the devices on the other side can also be matched to ensure the preparation of the whole-page welding strip string and the welding strip arrangement of the whole-page battery piece group.

[0067] In the specification, each embodiment is described in a progressive, parallel or progressive and parallel manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the related parts can be referred to the method part.

[0068] It should be noted that in the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like are words of reference used to facilitate an understanding of the present application and do not connote orientation of the apparatus or elements thereof, unless otherwise indicated. When one component is said to be "connected" to another component, it can be directly connected to the other component or intervening components can be present therebetween.

[0069] It should also be noted that, as used in the description herein, the terms "first", "second", and the like, do not connote any ordinal, precedence, or order, but are simply used to distinguish one component from another, unless otherwise indicated. Furthermore, the terms "including", "containing", or any other similar forms are intended to be open-ended, and include the presence of items or materials other than those recited. Thus, any recitation of "including" is not meant to be construed as a complete recitation of the elements or features that are present in an item or device, or that are to be used in the making of an item or device.

[0070] The above description of disclosed embodiments provides enabling disclosure sufficient for one of ordinary skill in the art to practice or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of arranging a solder strip for a photovoltaic module, the photovoltaic module including a plurality of positive cell strings and a plurality of negative cell strings, each positive cell string and each negative cell string being arranged alternately along a width direction of the cell strings, the current directions of the positive cell strings and the negative cell strings being opposite to each other, characterized by, The first welding strip and the second welding strip are pulled out by the welding strip pulling mechanism along the length direction of the battery string, each first welding strip and each second welding strip are arranged alternately in the width direction of the battery string, and the photovoltaic module welding strip arrangement method comprises the following steps: The welding strip pulling mechanism pulls out a first welding strip and a second welding strip required by the positive electrode battery string, and prepares an A welding strip string arranged on the positive electrode battery piece group; The welding strip pulling mechanism pulls out a first welding strip and a second welding strip required by the negative electrode battery string, and prepares a B welding strip string arranged on the negative electrode battery piece group; Wherein, the A welding strip string and the B welding strip string are mirror images of each other.

2. The method of arranging the soldering strips of a photovoltaic module according to claim 1, characterized in that, The welding strip pulling mechanism simultaneously pulls out a first welding strip and a second welding strip required by the positive electrode battery string, and / or the welding strip pulling mechanism simultaneously pulls out a first welding strip and a second welding strip required by the negative electrode battery string.

3. The method of arranging the soldering strips of a photovoltaic module according to claim 1, characterized in that, The A welding strip string and the B welding strip string are prepared by the welding strip preparation mechanism, and the specific process is as follows: The welding strip preparation mechanism cuts each first welding strip pulled out by the welding strip pulling mechanism into a plurality of first polarity welding strips, and cuts each second welding strip into a plurality of second polarity welding strips, and the cutting points of the first welding strips and the cutting points of the second welding strips are staggered; The welding strip preparation mechanism changes the pitch of each first polarity welding strip and each second polarity welding strip along the length direction of the battery string, so that each first polarity welding strip and each second polarity welding strip has a preset pitch in the length direction of the battery string.

4. The method of arranging the soldering strips of a photovoltaic module according to claim 3, characterized in that, The welding strip preparation mechanism simultaneously cuts the a first welding strips and the b second welding strips pulled out by the welding strip pulling mechanism, so that each first welding strip is cut into a plurality of first polarity welding strips at the same time, and each second welding strip is cut into a plurality of second polarity welding strips; and / or, The welding strip preparation mechanism simultaneously changes the pitch of each first polarity welding strip and each second polarity welding strip along the length direction of the battery string.

5. The method of arranging a photovoltaic module solder strip according to claim 3, wherein, The A welding strip string is arranged on the positive electrode battery piece group by the welding strip carrying mechanism, and the B welding strip string is arranged on the negative electrode battery piece group, and the welding strip carrying mechanism can carry each first polarity welding strip after cutting and changing the pitch of a+1 first welding strips and each second polarity welding strip after cutting and changing the pitch of b second welding strips.

6. The method of arranging the solder strips of a photovoltaic module according to any one of claims 1 to 5, characterized in that After the positive electrode battery piece group and the negative electrode battery piece group are arranged alternately on the back plate along the width direction of the battery string, the A welding strip string is arranged on the positive electrode battery piece group, and the B welding strip string is arranged on the negative electrode battery piece group.

7. The method of arranging a photovoltaic module solder strip according to claim 6, wherein, Along the width direction of the battery string, the back plate is provided with a welding strip pulling mechanism, a welding strip preparation mechanism and a welding strip carrying mechanism on both sides; the welding strip pulling mechanism and the welding strip preparation mechanism on each side can cooperate to produce the A welding strip string and the B welding strip string, the A welding strip string produced is arranged on the positive electrode battery piece group by the welding strip carrying mechanism on the same side, and the B welding strip string produced is arranged on the negative electrode battery piece group by the welding strip carrying mechanism on the same side.

8. The method of arranging a photovoltaic module solder strip according to claim 6, wherein, Along the width direction of the battery string, one side of the back plate is provided with a pull-tab mechanism, a tab preparation mechanism and a tab conveying mechanism, the pull-tab mechanism and the tab preparation mechanism can cooperate to make A tab string and B tab string, and the tab conveying mechanism conveys and arranges the A tab string on the positive electrode battery piece group and the B tab string on the negative electrode battery piece group.

9. The method of arranging a photovoltaic module solder strip according to claim 7 or 8, characterized in that, The tab conveying mechanism conveys and arranges the corresponding tab string on the corresponding battery piece group in the same direction.

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