Method for producing spare battery sheet and battery sheet stringer

Abstract

The application provides a production method of spare battery piece and a stringer. The production method comprises the following steps: during stringing a preset number of battery pieces into a battery string, selecting one or more battery strings as a to-be-cut battery string according to a preset rule; stringing more than the preset number of battery pieces on the to-be-cut battery string; and determining whether the number of continuous good pieces in the to-be-cut battery string is equal to or greater than the preset number. If the determination result is yes, cutting the preset number of continuous good pieces from the to-be-cut battery string, and detecting the remaining battery pieces in the to-be-cut battery string to determine whether there is a good piece in the remaining battery pieces. If the determination result is yes, cutting the good piece in the remaining battery pieces as a spare battery piece. The production method of the application uses the stringer on the assembly line to manufacture the spare battery piece, which has the advantages of low cost and avoiding oxidation of the spare battery piece due to long storage time compared with using a special stringer to produce the spare battery piece.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the field of photovoltaic cells, in particular to a production method of spare cell pieces and a cell piece string welding machine. BACKGROUND

[0002] The production process of a photovoltaic module mainly includes string welding, laminating welding, laminating, framing, junction box welding and curing, etc. The string welding, as the first process link of module production, refers to welding cell pieces into a string through interconnection strips. At present, the string welding process is mainly realized automatically by a string welding machine in the production process. However, in the string welding process of the string welding machine, there are inevitably phenomena of poor welding, such as empty welding, false welding, hidden cracks, etc. (these cell pieces are called defective pieces). The defective pieces in the cell string need to be transferred to a special manual string welding station of the production line for rework repair. The production method of spare cell pieces for replacing the defective pieces in the cell string includes: welding by a special string welding machine and uniformly welding by a string welding machine on a production line within a fixed time. The former method needs to reserve a special string welding machine, which will cause an increase in cost, and the latter method will cause the spare cell pieces to be oxidized due to a too long storage time.

[0003] Therefore, how to avoid the oxidation of spare cell pieces due to a long storage time and how to manufacture spare cell pieces at low cost are problems to be solved urgently. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a production method of spare cell pieces and a cell piece string welding machine, which have the advantages of low cost and avoidance of oxidation of spare cell pieces due to a long storage time.

[0005] The technical solution adopted by the present application to solve the above technical problem is a production method of spare cell pieces, comprising the steps of: selecting one or more cell strings as a to-be-cut cell string according to a preset rule in the process of welding a preset number of cell pieces into a cell string; welding more than the preset number of cell pieces on the to-be-cut cell string; and judging whether the number of continuous good pieces in the to-be-cut cell string is equal to or greater than the preset number, if the judgment result is yes, cutting out the preset number of continuous good pieces from the to-be-cut cell string, and detecting the remaining cell pieces in the to-be-cut cell string to judge whether there is a good piece in the remaining cell pieces, if the judgment result is yes, cutting out the good piece in the remaining cell pieces as the spare cell piece.

[0006] In an embodiment of the present application, the preset rule is to select a cell string as the to-be-cut cell string every interval of a first number of cell strings, wherein when the occurrence rate of defective pieces increases, the first number decreases accordingly.

[0007] In an embodiment of the present application, the second number of the battery pieces to be string-welded on the battery piece string to be cut is greater than the preset number, and the second number increases as the occurrence rate of the defective battery piece increases.

[0008] In an embodiment of the present application, the difference between the second number and the preset number is equal to or greater than 2.

[0009] In an embodiment of the present application, the defective battery piece includes open welding and / or false welding between the welding belt and the battery piece.

[0010] In an embodiment of the present application, when it is determined that the number of the continuous good battery pieces in the battery piece string to be cut is less than the preset number, the continuous good battery pieces less than the preset number are cut out as the spare battery pieces.

[0011] In an embodiment of the present application, when the preset number of continuous good battery pieces are cut out from the battery piece string to be cut, the first reserved length of the welding belt at the string head and the string tail is equal to or greater than a first preset length.

[0012] In an embodiment of the present application, when the good battery pieces in the remaining battery pieces are cut out as the spare battery pieces, the second reserved length of the welding belt of the spare battery pieces is equal to or greater than a second preset length.

[0013] The present application further proposes a battery piece string welding machine including a belt arranging mechanism, a feeding mechanism, a laminating mechanism, a welding mechanism, and a cutting mechanism, and further includes a controller configured to: in the process of string-welding a preset number of battery pieces into a battery piece string, select one or more battery piece strings as a battery piece string to be cut according to a preset rule, control the belt arranging mechanism to cut a welding belt into a third preset length, control the feeding mechanism to carry more than the preset number of battery pieces, control the laminating mechanism to lay the third preset length of the welding belt on the battery pieces, control the welding mechanism to string-weld more than the preset number of battery pieces on the battery piece string to be cut, determine whether the number of continuous good battery pieces in the battery piece string to be cut is equal to or greater than the preset number, if the determination result is yes, control the cutting mechanism to cut the preset number of continuous good battery pieces from the battery piece string to be cut, and detect the remaining battery pieces in the battery piece string to be cut to determine whether there is a good battery piece in the remaining battery pieces, and if the determination result is yes, control the cutting mechanism to cut the good battery piece in the remaining battery pieces as a spare battery piece.

[0014] In an embodiment of the present application, when it is determined that the number of the continuous good battery pieces in the battery piece string to be cut is less than the preset number, the controller controls the cutting mechanism to cut the continuous good battery pieces less than the preset number as the spare battery pieces.

[0015] The production method of the application uses a stringer on a production line to make standby battery pieces. Compared with using a special stringer to produce standby battery pieces, the production method of the application saves a special stringer and solves the problem of oxidation of standby battery pieces produced by using a special stringer due to long storage time. BRIEF DESCRIPTION OF DRAWINGS

[0016] To make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 is an exemplary flowchart of a production method of a standby battery piece according to an embodiment of the application;

[0018] Figure 2 is an exemplary flowchart of a production method of a standby battery piece according to another embodiment of the application;

[0019] Figure 3 is a schematic diagram of a stringing process of a battery piece to be cut according to an embodiment of the application;

[0020] Figure 4 is a system block diagram of a battery piece stringer according to an embodiment of the application. DETAILED DESCRIPTION

[0021] To make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application are described in detail below with reference to the accompanying drawings.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the application. However, the application can be practiced without the specific details, other than in the claims, and the application is not limited to the specific embodiments disclosed in the description.

[0023] As shown in the application and claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not mean "only one", "single" or "just one", but can include a plurality or "one or more" unless the context clearly indicates otherwise. Generally, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0024] In addition, it should be noted that the use of the terms "first", "second" and the like in the description and in the claims of the present application are used as a matter of convenience, e.g., to distinguish one element from another, but do not necessarily have a special meaning or significance to the definition of the claims. Furthermore, unless otherwise defined, all terms used in the description and / or claims of the present application are to be interpreted as broad as possible so as to encompass known equivalents as well as future substitutions of terms to be developed in the art (e.g., by the issuance of future patents, adaptations by those skilled in the art, or the like). In addition, it is intended that the scope of the present application extend to all such replacements, modifications, permutations, and equivalents as well.

[0025] Flowcharts are used in the present application to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in sequence. On the contrary, various steps can be processed in reverse order or simultaneously. Meanwhile, other operations can be added to or removed from these processes, or one or more steps of operations can be removed from these processes.

[0026] To facilitate the understanding of the concept of the present application, the process of stringing the battery pieces into the battery string is briefly described here. Each battery string contains a preset number of battery pieces, and the grid lines of these battery pieces are welded to a certain number of welding ribbons. The process of connecting the battery pieces through the welding ribbons to form the battery string is called stringing. The specific number of battery pieces and the specific number of welding ribbons can be adjusted according to actual needs. During the process of stringing the battery pieces into the battery string using the stringing machine on the assembly line, the welding ribbons may not be properly welded to the grid lines of some battery pieces, for example, the welding ribbons between the battery pieces may not be properly welded, or the welding ribbons may be improperly welded. These battery pieces with poor welding are collectively referred to as defective pieces in the following. For the defective pieces that occur during the stringing process, the defective pieces need to be cut from the battery string in which they are located, and then a battery piece that has already been welded with a welding ribbon (hereinafter referred to as a spare battery piece) is welded at the location of the original defective piece, i.e., the two ends of the welding ribbon of the spare battery piece are welded to the welding ribbons of the two battery pieces adjacent to the original defective piece. According to a preset rule, the present application selects part of the battery strings on the assembly line as the battery strings to be cut, and makes the spare battery piece by welding more than a preset number of battery pieces on the battery string to be cut.

[0027] Next, the production method and the stringing machine of the present application are described through specific embodiments.

[0028] Figure 1 is an exemplary flowchart of the production method of the spare battery piece according to an embodiment of the present application. Referring to FIG. 11, the production method of the embodiment includes the following steps: Figure 1

[0029] Step S110: During the process of stringing a preset number of battery pieces into a battery string, one or more battery strings are selected as the battery strings to be cut according to a preset rule.​

[0030] Step S120: stringing more than a preset number of cells on the battery string to be cut;

[0031] Step S130: determining whether the number of continuous good cells in the battery string to be cut is equal to or greater than the preset number, if the result of the determination is yes, cutting out the preset number of continuous good cells from the battery string to be cut, and detecting the remaining cells in the battery string to be cut to determine whether there is a good cell in the remaining cells, if the result of the determination is yes, cutting out the good cell in the remaining cells as a spare cell.

[0032] The steps S110 to S130 described above are explained in detail as follows.

[0033] Reference Figure 1 As shown in FIG. 1, in step S110, one or more battery strings are selected as the battery string to be cut according to a preset rule during the process of stringing a preset number of cells into a battery string using a flow line. The preset number is the same as the number of cells in the battery string for layout, which can be set according to requirements.

[0034] In an embodiment, the preset rule is to select one battery string as the battery string to be cut every interval of a first number of battery strings. The specific value of the first number can be set according to actual requirements, for example, one battery string is selected as the battery string to be cut every interval of 2 or 3 battery strings. In some embodiments, the first number is determined according to the occurrence rate of defective cells in the battery string, wherein the first number decreases as the occurrence rate of defective cells increases. The occurrence rate of defective cells refers to the percentage of the number of defective cells in the battery string to the total number of cells in the battery string within a certain time. By determining the first number according to the occurrence rate of defective cells in the battery string, it can be ensured that there are enough battery strings to be cut for producing spare cells.

[0035] It can be understood that the preset rule in step S110 is not limited to the interval selection of battery strings as the battery string to be cut in the above-mentioned embodiments, for example, the preset rule can also be to select one battery string as the battery string to be cut every interval of irregular number of battery strings. Compared with producing spare cells by a dedicated stringer or producing spare cells by the stringer on the flow line within a fixed time, the present application can set the preset rule according to requirements, thereby more flexibly using the stringer on the flow line to produce spare cells, which can avoid the oxidation of spare cells due to too long storage time, and save the spare stringer.

[0036] In step S120, the number of cells in the selected cell string to be cut is greater than the preset number. The specific number of cells greater than the preset number can be set according to actual needs. For example, the preset number of cells in the cell string for layout is 5, and the number of cells in the cell string to be cut can be 7 or other numbers greater than 5.

[0037] In an embodiment, the number of cells in the cell string to be cut is greater than the preset number by a second number, and the second number is determined according to the occurrence rate of defective cells in the cell string. When the occurrence rate of defective cells increases, the second number also increases. In this way, enough cells can be ensured for making spare cells.

[0038] In an embodiment, the difference between the second number and the preset number is equal to or greater than 2. The defective cells that appear in the cell string for layout can be 2 or more consecutive cells. The following is an example of 2 consecutive cells. If 2 independent spare cells are used to replace the 2 defective cells described above, in addition to welding the 2 spare cells to the cell string respectively, the 2 spare cells also need to be welded together. Compared with the above method, the present application welds 2 or more cells greater than the preset number on the cell string to be cut to make 2 or more consecutive spare cells, so that consecutive good cells can be used to replace the consecutive defective cells, and the step of welding each independent spare cell together is omitted.

[0039] To facilitate understanding of steps S110 and S120, a non-limiting example is given.

[0040] In this example, the flow line is performing a string welding job of string welding n cells into a cell string. The preset rule for selecting the cell string to be cut is to select one cell string as the cell string to be cut every 3 cell strings, and the number of cells in the cell string to be cut is 3 more than the preset number. For example, the number of cells in the first to third cell strings is n, and the fourth cell string is selected as the cell string to be cut, with n+3 cells string welded on it. The number of cells in the fifth to seventh cell strings is n, and the eighth cell string is selected as the cell string to be cut, with n+3 cells string welded on it. Similarly, the number of cells in the mth to m+2th cell strings is n, and the number of cells in the m+3th cell string is n+3.

[0041] Figure 2 is an exemplary flow chart of the production method of spare cells according to another embodiment of the present application. Referring to Figure 2 As shown in FIG. 13, step S130 can be divided into steps S131, S132, S133 and S134.

[0042] In step S131, it is determined whether the number of consecutive good cells in the battery string to be cut is equal to or greater than the preset number. If the determination result of step S131 is yes, step S132 is performed: cutting out the preset number of consecutive good cells from the battery string to be cut.

[0043] If the number of consecutive good cells in the battery string to be cut is greater than the preset number, the preset number of consecutive good cells are preferentially used as the battery string for layout. At this time, the preset number of consecutive good cells are preferentially cut out from the battery string to be cut as the battery string for subsequent layout process.

[0044] In an embodiment, when the preset number of consecutive good cells are cut out from the battery string to be cut, the first reserved length of the tab at the head and tail of the string is equal to or greater than the first preset length. The head and tail of the string refer to the two cell pieces at the head and tail of the consecutive good cells. When the consecutive good cells are used for layout, the tabs on the head and tail cell pieces need to be connected with external components. Reserving the tab with a length equal to or greater than the first preset length on the tab of the head and tail cell pieces facilitates the connection of the head and tail cell pieces with external components. It can be understood that the first preset length can be set according to requirements.

[0045] Reference Figure 2 As shown, in an embodiment, when it is determined in step S131 that the number of consecutive good cells in the battery string to be cut is less than the preset number, since the consecutive good cells cannot be used for subsequent layout process, step S140 is performed: cutting out the consecutive good cells less than the preset number as spare cell pieces. In some embodiments, the consecutive good cells less than the preset number can be segmented according to requirements, for example, segmented into single spare cell pieces, or segmented into a certain number of consecutive spare cell pieces.

[0046] After the preset number of consecutive good cells are cut out from the battery string to be cut, step S133 is performed: detecting the remaining cell pieces in the battery string to be cut to determine whether there are good cells in the remaining cell pieces. If there are good cells in the remaining cell pieces, step S134 is performed: cutting out the good cells in the remaining cell pieces as spare cell pieces. In some embodiments, if there are defective cell pieces in the remaining cell pieces, the defective cell pieces are recycled.

[0047] In one embodiment, when cutting out good cells from the remaining battery cells to serve as spare cells, the second reserved length of the solder strip on the spare cell is equal to or greater than a second preset length. The spare cell will be used to replace defective cells in the battery strings produced on the production line. Specifically, the solder strip on the spare cell string is welded to the solder strip of the battery cell adjacent to the defective cell. Ensuring that the reserved solder strip on the spare cell is equal to or greater than the second preset length facilitates the welding of the spare cell to the battery cells in the battery string.

[0048] To facilitate understanding of the method for producing the spare battery cells of this application, a detailed embodiment is given below.

[0049] Figure 3 The diagram shown is a schematic representation of the string welding process for a battery string to be cut according to an embodiment of this application. (Reference) Figure 3 As shown, the robotic arm 210 has a suction cup 211, which allows the robotic arm 210 to move the battery cells 230. In this embodiment, the battery string used for arrangement contains 6 battery cells. Figure 3 The image shows a battery string to be cut, such as... Figure 3 As shown, the battery string 220 to be cut has 3 more battery cells welded on compared to the battery string used for layout.

[0050] First, check Figure 3 The welding condition of the nine solar cells is used to determine whether the number of consecutive good cells is equal to or greater than six. Figure 3 In this embodiment, the six battery cells 230 starting from the left are all good cells. The solder strip 240 between the sixth battery cell 231 and the seventh battery cell 232 is cut at the shearing position 250 to cut the six consecutive battery cells 230 from the battery string 220 to be cut. In some embodiments, the cut six battery cells 230 can be placed in the material box 260 for subsequent process steps.

[0051] Next, the soldering of the remaining three battery cells 232, 233, and 234 is checked. If all three cells are good, they are cut into three independent spare cells. In some other embodiments, battery cells 232, 233, and 234 may not be cut, but used as a whole as a spare cell. Thus, when three consecutive defective cells appear in the battery string used for layout, the aforementioned three consecutive spare cells can be used to replace the defective cells. Compared to using three independent spare cells to replace three consecutive defective cells, this method has the advantages of low cost and high efficiency.

[0052] The production method of the spare battery piece in the above embodiment of the application uses a stringer on a production line to make the spare battery piece. Compared with using a special stringer to produce the spare battery piece, the production method of the application saves a special stringer and solves the problem of oxidation of the spare battery piece produced by using a special stringer due to long storage time.

[0053] The application further provides a battery piece stringer to solve the above problems. Figure 4 Fig. 1 shows a system block diagram of a battery piece stringer according to an embodiment of the application. Referring to Fig. 1, the battery piece stringer 300 includes a tape laying mechanism 310, a feeding mechanism 320, a lamination mechanism 330, a welding mechanism 340, a shearing mechanism 350, and a controller 360. Figure 4

[0054] Specifically, the tape laying mechanism 310 is adapted to cut the welding tape into a required length, which can be set according to actual needs. For example, when the number of battery pieces to be stringed increases, the required length of the corresponding welding tape also increases. The feeding mechanism 320 is adapted to carry the battery pieces. The feeding mechanism 320 can carry the battery pieces through the suction cup 211 shown in Fig. 2. The number of battery pieces carried by the feeding mechanism 320 can be set according to needs. The lamination mechanism 330 is adapted to lay the welding tape of the required length on the battery pieces. The welding mechanism 340 is adapted to weld the welding tape of the required length to the main grid on the battery pieces, thereby stringing the battery pieces into a battery string. The shearing mechanism 350 is adapted to cut the welding tape at a shearing position, i.e., the welding tape connecting the battery pieces can be cut at a specified position by the shearing mechanism. Figure 3

[0055] The controller 360 is configured to perform the following steps.

[0056] Step 1: In the process of stringing a preset number of battery pieces into a battery string, one or more battery strings are selected as the battery string to be sheared according to a preset rule.

[0057] Step 2: The controller 360 controls the tape laying mechanism 310 to cut the welding tape into a third preset length. Because the number of battery pieces in the battery string to be sheared is greater than the preset number, the length of the welding tape needs to be adaptively adjusted. The controller 360 can control the tape laying mechanism 310 to cut the welding tape into a third preset length, which matches the number of battery pieces in the battery string to be sheared. Further, the feeding mechanism 320 is controlled to carry more than the preset number of battery pieces, the lamination mechanism 330 is controlled to lay the welding tape of the third preset length on the battery pieces carried by the feeding mechanism 320, and the welding mechanism 340 is controlled to string more than the preset number of battery pieces on the battery string to be sheared.

[0058] ​​Step 3: The controller 360 judges whether the number of continuous good cells in the battery string to be cut is equal to or greater than the preset number. If the result of the judgment is yes, the controller 360 controls the cutting mechanism 350 to cut out the preset number of continuous good cells from the battery string to be cut, and detects the remaining cells in the battery string to be cut to judge whether there is a good cell in the remaining cells. If the result of the judgment is yes, the controller 360 controls the cutting mechanism 350 to cut out the good cell in the remaining cells as a spare cell.

[0059] In an embodiment, when the controller 360 judges that the number of continuous good cells in the battery string to be cut is less than the preset number, the controller 360 controls the cutting mechanism 350 to cut out the continuous good cells less than the preset number as spare cells.

[0060] Other details of the stringer of the present application can refer to the relevant description above, and will not be repeated here.

[0061] The stringer of the present application is used to produce a battery string containing a preset number of cells, and is also used to produce a battery string to be cut containing spare cells. Compared with using a special stringer to produce spare cells, it has the advantages of low cost and avoiding oxidation of spare cells due to long storage time.

[0062] The above has described the basic concept, and it is obvious that the above application disclosure is only used as an example and does not constitute a limitation on the present application for those skilled in the art. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0063] At the same time, specific words are used in the present application to describe the embodiments of the present application. As "one embodiment", "an embodiment", and / or "some embodiments" means a certain feature, mechanism or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned in different places in the specification is not necessarily the same embodiment. In addition, some features, mechanisms or characteristics in one or more embodiments of the present application can be properly combined.

[0064] In some embodiments, numbers that describe amounts, dimensions, and so forth, are used in the description of the embodiments. It should be understood that such numbers are used to describe some embodiments and that such numbers, in some instances, are modified by the modifier "about" or "approximately." Unless otherwise specified, "about" or "approximately" means ±20% of the value of the measured quantity that the term describes. Accordingly, in some embodiments, the numerical parameters in the specification and claims are approximations that can vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, numerical parameters are approximations that can vary from the stated numerical parameters. In some embodiments, numerical parameters are determined by the use of standard techniques with either an appropriately developed and tested formulation or an appropriately developed and tested method. Although the numerical ranges and parameters setting forth the broad scope of some embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.

Claims

1. A method for producing a backup battery sheet, characterized by, The method comprises the steps of: selecting one or more battery strings as a to-be-cut battery string according to a preset rule during the process of stringing a preset number of battery pieces into battery strings; stringing more than the preset number of battery pieces on the to-be-cut battery string; determining whether the number of continuous good pieces in the to-be-cut battery string is equal to or greater than the preset number, and if the number of continuous good pieces in the to-be-cut battery string is equal to or greater than the preset number, cutting the preset number of continuous good pieces from the to-be-cut battery string, and detecting the remaining battery pieces in the to-be-cut battery string to determine whether there are good pieces in the remaining battery pieces, and if there are good pieces in the remaining battery pieces, cutting the good pieces in the remaining battery pieces as the standby battery pieces. The preset rule is to select a battery string as the to-be-cut battery string every first number of battery strings, wherein the first number decreases as the occurrence rate of defective pieces increases.

2. The production method according to claim 1, wherein More than a second number of the battery pieces than the preset number are stringed on the to-be-cut battery string, wherein the second number increases as the occurrence rate of defective pieces increases.

3. The production method according to claim 1, wherein The difference between the second number and the preset number is equal to or greater than 2.

4. The production method according to claim 3, wherein The defective pieces include empty welding and / or false welding between the welding belt and the battery pieces.

5. The production method according to claim 2 or 3, characterized by, When it is determined that the number of continuous good pieces in the to-be-cut battery string is less than the preset number, the continuous good pieces less than the preset number are cut as the standby battery pieces.

6. The production method according to claim 1, wherein When the preset number of continuous good pieces are cut from the to-be-cut battery string, the first reserved length of the welding belt at the string head and the string tail is equal to or greater than a first preset length.

7. The production method according to claim 1, wherein When the good pieces in the remaining battery pieces are cut as the standby battery pieces, the second reserved length of the welding belt of the standby battery pieces is equal to or greater than a second preset length.

8. The production method according to claim 1, wherein Further comprising:

9. A battery cell string welding machine comprising a tape laying mechanism, a feeding mechanism, a laminating mechanism, a welding mechanism and a shearing mechanism, characterized in that, a controller configured to: select one or more battery strings as a to-be-cut battery string according to a preset rule during the process of stringing a preset number of battery pieces into battery strings, control the belt mechanism to cut the welding belt into a third preset length, control the feeding mechanism to carry more than the preset number of battery pieces, control the lamination mechanism to lay the third preset length of the welding belt on the battery pieces, control the welding mechanism to string more than the preset number of battery pieces on the to-be-cut battery string, determine whether the number of continuous good pieces in the to-be-cut battery string is equal to or greater than the preset number, if the number of continuous good pieces in the to-be-cut battery string is equal to or greater than the preset number, control the cutting mechanism to cut the preset number of continuous good pieces from the to-be-cut battery string, and detect the remaining battery pieces in the to-be-cut battery string to determine whether there are good pieces in the remaining battery pieces, and if there are good pieces in the remaining battery pieces, control the cutting mechanism to cut the good pieces in the remaining battery pieces as standby battery pieces. When it is determined that the number of continuous good pieces in the to-be-cut battery string is less than the preset number, the controller controls the cutting mechanism to cut the continuous good pieces less than the preset number as the standby battery pieces.

10. The stringer welding machine of claim 9, wherein, ​

Images