Solder strip preparation device and series welding machine

Abstract

The utility model discloses a solder strip preparation device and a series welding machine. The solder strip preparation device is used for preparing solder strip sets needed by production of a first battery string and a second battery string. The solder strip preparation device comprises a solder strip supply part, a solder strip traction mechanism and a solder strip processing part. One of the welding strip supply part and the welding strip processing part is configured to be capable of translating, so that the N welding strips supplied by the welding strip supply part are aligned to the first welding strip processing station to the Nth welding strip processing station of the welding strip processing part, or the N welding strips supplied by the welding strip supply part are aligned to the second welding strip processing station to the (N + 1) th welding strip processing station of each welding strip processing assembly. The welding strip processing assembly is configured to carry out slitting and distance separation processing on the N welding strips so as to obtain welding strip sets which are arranged alternately. The solder strip preparation device provided by the utility model can selectively prepare the solder strip groups required by the production of two kinds of battery strings.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of photovoltaic cell production equipment. Specifically, the present application relates to a welding ribbon preparation device and a string welding machine. Background Art

[0002] An IBC (Interded Back Contact) cell is a cell with busbars printed only on the back of the cell. When connecting IBC cells in series, it is only necessary to use solder ribbons to connect the busbars on the back of adjacent IBC cells.

[0003] like Figure 1 As shown, the group of solder ribbons protruding from the head cells of the cell string is a first solder ribbon group 201 electrically connected to the odd-numbered grid lines of the cell 100, and another solder ribbon group is a second solder ribbon group 202 electrically connected to the even-numbered grid lines of the cell 100. This cell string is a first type of cell string 110. The group of solder ribbons protruding from the head cells of the cell string is a fourth solder ribbon group 204 electrically connected to the even-numbered grid lines of the cell 100, and another solder ribbon group is a third solder ribbon group 203 electrically connected to the odd-numbered grid lines of the cell 100. This cell string is a second type of cell string 120. When the cell strings are laid on the backplane to form a cell string group, the first type of cell strings 110 and the second type of cell strings 120 need to be arranged alternately to meet specific process requirements.

[0004] Because the arrangement of the solder ribbons on the first and second cell strings differs, conventional techniques typically require two stringing machines to produce the first and second cell strings, respectively, and then transport them sequentially to a stacking machine for PV module production. This production method results in higher production and maintenance costs for PV modules. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a welding strip preparation device, the detailed technical solution of which is as follows:

[0006] A welding ribbon preparation device is used to prepare welding ribbon groups required for the production of a first type of battery string and a second type of battery string. The first type of battery string includes a plurality of battery cells, a first welding ribbon group covering the odd-numbered grid lines of the battery cells, and a second welding ribbon group covering the even-numbered grid lines of the battery cells. The second type of battery string includes a plurality of battery cells, a third welding ribbon group covering the odd-numbered grid lines of the battery cells, and a fourth welding ribbon group covering the even-numbered grid lines of the battery cells. The battery cells are IBC battery cells.

[0007] The welding ribbon preparation device includes a welding ribbon supply part, a welding ribbon pulling mechanism and a welding ribbon processing part, wherein:

[0008] The solder ribbon supply unit is configured to supply N solder ribbons extending along a first horizontal direction;

[0009] The ribbon processing unit is arranged in the downstream of the ribbon supply unit, and includes a plurality of ribbon processing assemblies spaced apart along a first horizontal direction. The ribbon processing assembly has N+1 ribbon processing stations spaced apart along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0010] The welding ribbon pulling mechanism is located between the welding ribbon supply part and the welding ribbon processing part;

[0011] One of the solder ribbon supply unit and the solder ribbon processing unit is configured to be capable of translation along a second horizontal direction so that the N solder ribbons supplied by the solder ribbon supply unit are aligned with the first to Nth solder ribbon processing stations of each solder ribbon processing assembly, or so that the N solder ribbons supplied by the solder ribbon supply unit are aligned with the second to N+1th solder ribbon processing stations of each solder ribbon processing assembly;

[0012] When the N solder ribbons supplied by the solder ribbon supply unit are aligned with the first to Nth solder ribbon processing stations of each solder ribbon processing assembly, the solder ribbon pulling mechanism is configured to pull the N solder ribbons to the first to Nth solder ribbon processing stations of each solder ribbon processing assembly, and each solder ribbon processing assembly is configured to perform slitting and spacing processing on the N solder ribbons to obtain a first solder ribbon group and a second solder ribbon group that are alternately arranged;

[0013] When the N solder ribbons supplied by the solder ribbon supply section are aligned with the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing assembly, the solder ribbon traction mechanism is configured to pull the N solder ribbons to the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing assembly, and each solder ribbon processing assembly is configured to perform slitting and spacing processing on the N solder ribbons to obtain a third solder ribbon group and a fourth solder ribbon group that are alternately arranged.

[0014] The solder ribbon preparation device provided in the present application can selectively prepare the solder ribbon groups required for the production of two types of battery strings. It does not require changing the original production process and will not add additional steps, thereby saving the production cost and maintenance cost of producing photovoltaic modules containing the two types of battery strings.

[0015] In some embodiments, the solder strip preparation device further includes a first transverse movement portion, and the solder strip supply portion is arranged on a movable part of the first transverse movement portion; the first transverse movement portion is used to drive the solder strip supply portion to translate along the second horizontal direction, so that the N solder strips supplied by the solder strip supply portion are aligned with the 1st to Nth solder strip processing stations of each solder strip processing component, or so that the N solder strips supplied by the solder strip supply portion are aligned with the 2nd to N+1th solder strip processing stations of each solder strip processing component.

[0016] By arranging the solder ribbon supply unit as a movable component of the first transverse moving unit, the position of the solder ribbon supply unit in the second horizontal direction is switched, so that the N solder ribbons supplied by the solder ribbon supply unit are aligned with the first to Nth solder ribbon processing stations of each solder ribbon processing assembly, and ultimately the N solder ribbons supplied by the solder ribbon supply unit are pulled to the first to Nth solder ribbon processing stations of each solder ribbon processing assembly, and each solder ribbon processing assembly performs slitting and spacing processing on the N solder ribbons to obtain a first solder ribbon group and a second solder ribbon group arranged alternately. Alternatively, the N solder ribbons supplied by the solder ribbon supply unit are aligned with the second to N+1th solder ribbon processing stations of each solder ribbon processing assembly, and ultimately the N solder ribbons supplied by the solder ribbon supply unit are pulled to the second to N+1th solder ribbon processing stations of each solder ribbon processing assembly, and each solder ribbon processing assembly performs slitting and spacing processing on the N solder ribbons to obtain a third solder ribbon group and a fourth solder ribbon group arranged alternately.

[0017] In some embodiments, the solder strip preparation device further includes a second transverse movement portion, and the solder strip processing portion is arranged on a movable part of the second transverse movement portion; the second transverse movement portion is used to drive the solder strip processing portion to translate along a second horizontal direction, so that the 1st to Nth solder strip processing stations of each solder strip processing assembly are aligned with the N solder strips supplied by the solder strip supply portion, or the 2nd to N+1th solder strip processing stations of each solder strip processing assembly are aligned with the N solder strips supplied by the solder strip supply portion.

[0018] By arranging the ribbon processing unit on the movable component of the second transverse moving unit, the position switching of the ribbon processing unit in the second horizontal direction is achieved, so that the first to Nth ribbon processing stations of each ribbon processing assembly are aligned with the N ribbons supplied by the ribbon supply unit, and ultimately the N ribbons supplied by the ribbon supply unit are pulled to the first to Nth ribbon processing stations of each ribbon processing assembly, and each ribbon processing assembly performs slitting and spacing processing on the N ribbons to obtain a first ribbon group and a second ribbon group arranged alternately. Alternatively, the second to N+1th ribbon processing stations of each ribbon processing assembly are aligned with the N ribbons supplied by the ribbon supply unit, and ultimately the N ribbons supplied by the ribbon supply unit are pulled to the second to N+1th ribbon processing stations of each ribbon processing assembly, and each ribbon processing assembly performs slitting and spacing processing on the N ribbons to obtain a third ribbon group and a fourth ribbon group arranged alternately.

[0019] In some embodiments, after the weld ribbon traction mechanism pulls N weld ribbons to the 1st to Nth weld ribbon processing stations of each weld ribbon processing assembly, all odd-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies are configured to cooperate in clamping all even-numbered weld ribbons among the N weld ribbons, and are configured to cooperate in guiding all odd-numbered weld ribbons among the N weld ribbons, and each odd-numbered weld ribbon processing assembly is further configured to cut off all odd-numbered weld ribbons at corresponding positions to obtain several first weld ribbon groups; all even-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies are configured to cooperate in clamping all odd-numbered weld ribbons among the N weld ribbons, and are configured to cooperate in guiding all even-numbered weld ribbons among the N weld ribbons, and each even-numbered weld ribbon processing assembly is further configured to cut off all even-numbered weld ribbons at corresponding positions to obtain several second weld ribbon groups.

[0020] After the weld ribbon traction mechanism pulls the N weld ribbons to the 2nd to N+1th weld ribbon processing stations of each weld ribbon processing assembly, all odd-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies are configured to cooperate in clamping all odd-numbered weld ribbons among the N weld ribbons, and are configured to cooperate in guiding all even-numbered weld ribbons among the N weld ribbons, and each odd-numbered weld ribbon processing assembly is further configured to cut off all even-numbered weld ribbons at corresponding positions to obtain several fourth weld ribbon groups; all even-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies are configured to cooperate in clamping all even-numbered weld ribbons among the N weld ribbons, and are configured to cooperate in guiding all odd-numbered weld ribbons among the multiple N weld ribbons, and each even-numbered weld ribbon processing assembly is further configured to cut off all odd-numbered weld ribbons at corresponding positions to obtain several third weld ribbon groups.

[0021] By setting up multiple solder strip processing components, the multiple solder strip processing components can cut the N solder strips pulled to the 1st to Nth solder strip processing stations of each solder strip processing component into the first solder strip group and the second solder strip group, and cut the N solder strips pulled to the 2nd to N+1th solder strip processing stations of each solder strip processing component into the third solder strip group and the fourth solder strip group.

[0022] In some embodiments, the weld ribbon processing portion further includes a base and a spacing drive assembly, wherein: a plurality of weld ribbon processing assemblies are arranged on the base along a first horizontal direction; the spacing drive assembly is arranged on the base, and after all odd-numbered weld ribbons and all even-numbered weld ribbons in the N weld ribbons are cut off, the spacing drive assembly is configured to drive the plurality of weld ribbon processing assemblies to separate to both sides relative to the middle position of the base in the first horizontal direction to form an alternating arrangement of a first weld ribbon group and a second weld ribbon group, or to form an alternating arrangement of a third weld ribbon group and a fourth weld ribbon group.

[0023] By setting up the spacing drive component, the spacing drive of multiple welding strip processing components is realized, thereby obtaining the first welding strip group and the second welding strip group arranged alternately, or the third welding strip group and the fourth welding strip group arranged alternately.

[0024] In some embodiments, the solder strip processing assembly includes: a first mounting bracket mounted on a base; two clamping portions arranged in pairs on the first mounting bracket, the two clamping portions being used to clamp one of all odd-numbered solder strips and all even-numbered solder strips among N solder strips from two different positions, and to guide the other of all odd-numbered solder strips and all even-numbered solder strips among N solder strips from two different positions; a cutting portion arranged on the first mounting bracket and located between the two clamping portions, the cutting portion being used to cut off all solder strips guided by the clamping portions.

[0025] The welding ribbon processing component is set up so that the welding ribbon processing component can clamp all odd-numbered welding ribbons and one of all even-numbered welding ribbons from two different positions, guide all odd-numbered welding ribbons and the other of all second even-numbered welding ribbons from two different positions, and cut off all welding ribbons guided by the clamping part.

[0026] In some embodiments, the clamping portion includes a first pressure-bearing plate, a pressure plate, and a pressure plate driving unit, wherein:

[0027] The pressing plate is movably mounted on the first mounting bracket and is in transmission connection with a pressing plate driving unit provided on the first mounting bracket. N+1 pressing heads corresponding to the ribbon processing stations are provided on the top of the pressing plate along the second horizontal direction, and each pressing head is located at a corresponding ribbon processing station.

[0028] The first pressure plate is fixedly mounted on the first mounting bracket and extends along the second horizontal direction, and a horizontal pressure surface is formed on the top of the first pressure plate, wherein: the clamping parts in all odd-numbered solder strip processing assemblies, the first pressure plate is provided with ejectors corresponding to all even-numbered pressure heads in the N+1 pressure heads, the upper ends of the ejectors are higher than the pressure surface, and the pressure plate driving unit is configured to drive the pressure plate to press downward toward the first pressure plate, so that all even-numbered pressure heads in the N+1 pressure heads can press a solder strip onto the ejector, and the N+ All odd-numbered pressure heads in 1 pressure head can guide a welding ribbon; in the clamping part of the even-numbered welding ribbon processing assembly, the first pressure plate is provided with ejectors corresponding to all odd-numbered pressure heads in N+1 pressure heads, and the upper ends of the ejectors are higher than the pressure surface. The pressure plate driving unit is configured to drive the pressure plate to press downward toward the first pressure plate, so that all odd-numbered pressure heads in the N+1 pressure heads can press a welding ribbon onto the ejectors, and all even-numbered pressure heads in the N+1 pressure heads can guide a welding ribbon.

[0029] By setting the clamping parts in all odd-numbered solder strip processing components, the clamping parts in all odd-numbered solder strip processing components cooperate to clamp all even-numbered solder strips among the N solder strips that are pulled to the 1st to Nth solder strip processing stations, and are configured to cooperate to guide all odd-numbered solder strips in the N solder strips, and the clamping parts in all odd-numbered solder strip processing components cooperate to clamp all odd-numbered solder strips among the N solder strips that are pulled to the 2nd to N+1th solder strip processing stations, and are configured to cooperate to guide all even-numbered solder strips in the N solder strips. Similarly, by setting the clamping parts in all even-numbered weld strip processing components, the clamping parts in all even-numbered weld strip processing components cooperate to clamp all odd-numbered weld strips among the N weld strips that are pulled to the 1st to Nth weld strip processing stations, and are configured to cooperate to guide all even-numbered weld strips in the N weld strips, and the clamping parts in all even-numbered weld strip processing components cooperate to clamp all even-numbered weld strips among the N weld strips that are pulled to the 2nd to N+1th weld strip processing stations, and are configured to cooperate to guide all odd-numbered weld strips in the N weld strips.

[0030] In some embodiments, the cutting portion includes a fixed cutter, a movable cutter, and a cutter drive unit, wherein: the fixed cutter is fixedly mounted on the first mounting bracket and extends along the second horizontal direction, and a fixed blade is formed on the upper edge of the fixed cutter; the movable cutter is arbitrarily mounted on the first mounting bracket and is in transmission connection with the cutter drive unit disposed on the first mounting bracket;

[0031] In the cutting portion of all odd-numbered solder strip processing components, the upper side edge of the movable cutter has a movable blade of the movable cutter protruding upward and corresponding to all odd-numbered solder strip processing stations in the N+1 solder strip processing stations, and the cutter driving unit is configured to drive the movable cutter to slide downward so that each movable blade and the fixed cutter can cooperate to cut a solder strip; in the cutting portion of all even-numbered solder strip processing components, the upper side edge of the movable cutter has a movable blade of the movable cutter protruding upward and corresponding to all even-numbered solder strip processing stations in the N+1 solder strip processing stations, and the cutter driving unit is configured to drive the movable cutter to slide downward so that each movable blade and the fixed cutter can cooperate to cut a solder strip.

[0032] The cutting sections in all odd-numbered ribbon processing assemblies are configured so that they can cut all odd-numbered ribbons from the N ribbons drawn to the first through N-th ribbon processing stations to obtain a first ribbon group, and the cutting sections in all odd-numbered ribbon processing assemblies are configured so that they can cut all even-numbered ribbons from the N ribbons drawn to the second through N+1-th ribbon processing stations to obtain a fourth ribbon group. Similarly, the cutting sections in all even-numbered ribbon processing assemblies are configured so that they can cut all even-numbered ribbons from the N ribbons drawn to the first through N-th ribbon processing stations to obtain a second ribbon group, and the cutting sections in all even-numbered ribbon processing assemblies are configured so that they can cut all odd-numbered ribbons from the N ribbons drawn to the second through N+1-th ribbon processing stations to obtain a third ribbon group.

[0033] In some embodiments, the ribbon processing portion includes 2M ribbon processing components, which are all slidably connected to the base, and the spacing drive component includes M spacing drive members, wherein: the i-th spacing drive member is used to drive the i-th ribbon processing component and the 2M+1-i-th ribbon processing component to move toward the middle of the base or separate to both sides; or, the ribbon processing portion includes 2M+1 ribbon processing components, the M+1-th ribbon processing component is fixedly connected to the base, and the remaining 2M ribbon processing components are all slidably connected to the base, and the spacing drive component includes M spacing drive members, wherein: the i-th spacing drive member is used to drive the i-th ribbon processing component and the 2M+2-i-th ribbon processing component to move toward the middle of the base or separate to both sides; wherein, 1≤i≤M.

[0034] By setting the spacing drive assembly to include M spacing drive parts, the spacing drive assembly can independently drive each pair of welding ribbon processing assemblies to move in reverse, and finally make 2M welding ribbon processing assemblies or 2M+1 welding ribbon processing assemblies quickly separate to both sides or move toward the middle of the base to complete the spacing adjustment of the first welding ribbon group and the second welding ribbon group, or complete the spacing adjustment of the third welding ribbon group and the fourth welding ribbon group.

[0035] In some embodiments, the spacing drive member includes a driving wheel, a driven wheel, a synchronous belt and a driving member, wherein: the driving wheel and the driven wheel are rotatably installed on the base, the synchronous belt is mounted on the driving wheel and the driven wheel along the first horizontal direction, and the driving member is used to drive the driving wheel to rotate to drive the synchronous belt to rotate; the i-th welding ribbon processing component is fixedly connected to the first side belt body of the synchronous belt, and the 2M+1-i-th welding ribbon processing component or the 2M+2-i-th welding ribbon processing component is fixedly connected to the second side belt body of the synchronous belt; when the driving member drives the synchronous belt to rotate, it drives the i-th welding ribbon processing component and the 2M+1-i-th welding ribbon processing component or the 2M+2-i-th welding ribbon processing component to move closer to the middle of the base or separate to both sides.

[0036] A spacing drive component with a simple structure and stable driving is provided, which only requires one drive component to drive the corresponding two welding strip processing components to move in opposite directions at the same speed to separate them to the sides or move them closer to the middle of the base.

[0037] In some embodiments, among the M spacing driving components, the (i+1)th spacing driving component drives the corresponding two welding ribbon processing components to separate to both sides before the (i)th spacing driving component.

[0038] Of all the ribbon handling assemblies, the pair farther from the center of the base is separated first. This prevents collision damage between adjacent pairs of ribbon handling assemblies and prevents deformation of the ends of the recently cut and unseparated ribbon assembly.

[0039] In some embodiments, the solder strip supply portion includes a solder strip discharge mechanism, a first clamping mechanism, a second clamping mechanism and a cutting mechanism arranged in sequence along a first horizontal direction, wherein: the N solder strips discharged by the solder strip discharge mechanism pass through the first clamping mechanism, the second clamping mechanism and the cutting mechanism in sequence; the first clamping mechanism is configured to be able to clamp all odd-numbered solder strips and one of all even-numbered solder strips in the N solder strips, and to translate along the first horizontal direction to adjust the position of the free end of the clamped solder strip; the solder strip traction mechanism is configured to clamp the free ends of the N solder strips from the cutting mechanism, and to pull the N solder strips to the solder strip processing portion; the solder strip processing portion is configured to cut off all odd-numbered solder strips and one of all even-numbered solder strips in the N solder strips, the cutting mechanism is configured to cut off the other of all odd-numbered solder strips and all even-numbered solder strips in the N solder strips, and the first clamping mechanism and the second clamping mechanism are configured to clamp the N solder strips when the solder strips are cut.

[0040] Through the cooperation of the solder ribbon discharge mechanism, the first clamping mechanism, the second clamping mechanism and the cutting mechanism, the solder ribbon supply unit can automatically supply N solder ribbons, and can automatically adjust the free ends of the N solder ribbons so that the arrangement of the free ends of the N solder ribbons is consistent with the arrangement of the solder ribbon group to be prepared.

[0041] In some embodiments, the first clamping mechanism includes a first translation drive assembly, a second mounting bracket, a second pressure plate, and a first clamping assembly, wherein: the second mounting bracket is connected to the movable part of the first translation drive assembly, and the first translation drive assembly is used to drive the second mounting bracket to translate along the first horizontal direction; the second pressure plate is horizontally arranged on the second mounting bracket; the first clamping assembly includes a plurality of first clamping members arranged along the second horizontal direction; the first clamping assembly is used to press all odd-numbered welding strips and one of all even-numbered welding strips onto the second pressure plate, and each first clamping member is used to press one welding strip.

[0042] By setting the first clamping mechanism, the first clamping mechanism can clamp one of all odd-numbered welding ribbons and all even-numbered welding ribbons among the N welding ribbons, and adjust the position of the free end of the clamped welding ribbon along the first horizontal direction.

[0043] In some embodiments, the second clamping mechanism includes a third mounting bracket, a third pressure plate, and a second clamping assembly, wherein: the third pressure plate is horizontally arranged on the third mounting bracket; the second clamping assembly includes a plurality of second clamping members arranged along a second horizontal direction; the second clamping assembly is used to clamp all odd-numbered welding strips and the other of all even-numbered welding strips onto the third pressure plate, and each second clamping member is used to clamp one welding strip.

[0044] By setting the second pressing mechanism, the second pressing assembly can press the other of all the odd-numbered welding strips and all the even-numbered welding strips onto the third pressure plate.

[0045] In some embodiments, the cutting mechanism is slidably connected to the third mounting bracket; a second translation drive assembly is also provided on the third mounting bracket, and the cutting mechanism is transmission-connected to the second translation drive assembly; after the cutting mechanism cuts off the weld ribbon, the second translation drive assembly is used to drive the cutting mechanism to move away from the weld ribbon processing portion so that the new free end of the cut weld ribbon extends out of the cutting mechanism.

[0046] By slidingly connecting the cutting mechanism to the third mounting bracket and providing a second translation drive assembly, the cutting mechanism moves away from the welding ribbon processing portion after cutting the welding ribbon, so that the new free end of the cut welding ribbon extends out of the cutting mechanism, making it convenient for the welding ribbon traction mechanism to clamp the free end of the welding ribbon from the cutting mechanism.

[0047] In some embodiments, the solder ribbon supply portion further includes a guide mechanism disposed between the solder ribbon unwinding mechanism and the first pressing mechanism, and the guide mechanism is used to guide the n solder ribbons toward the first pressing mechanism.

[0048] By setting the guiding mechanism, the n welding strips released by the welding strip releasing mechanism are guided.

[0049] In some embodiments, the welding ribbon traction mechanism includes a movable module, a fourth mounting bracket, a fixed clamp, a driving assembly and N+1 clamps, wherein: the fourth mounting bracket is connected to the movable part of the movable module, and the movable module is used to drive the fourth mounting bracket to translate in the first horizontal direction and to lift and lower in the vertical direction; the fixed clamp is fixedly connected to the fourth mounting bracket; N+1 clamps are arranged on the fourth mounting bracket along the second horizontal direction, and are all transmission-connected to the driving end of the driving assembly; the driving assembly is used to drive the N+1 clamps to rotate toward or away from the fixed clamp, so that each clamp can press a welding ribbon onto the fixed clamp.

[0050] The ribbon pulling mechanism is configured to grip the free ends of N ribbons from the cutting mechanism and pull them to the ribbon processing unit. Because the ribbon pulling mechanism is equipped with N+1 clamping claws, the ribbon pulling mechanism can still grip the N ribbons after the ribbon supply unit adjusts the positions of the N ribbons being supplied.

[0051] The present application also provides a stringer, which includes any of the above-mentioned ribbon preparation devices, a cell feeding mechanism, a ribbon conveying mechanism, a welding conveying mechanism, and a welding mechanism, wherein: the cell feeding mechanism is used to pick up a plurality of IBC cells and convey the picked-up cells to the welding conveying mechanism;

[0052] The solder ribbon transport mechanism is configured to pick up the solder ribbon group prepared by the solder ribbon preparation device, transport the solder ribbon group to the welding conveying mechanism, and stack the solder ribbon group and the battery cells according to predetermined rules to form a first type of battery string or a second type of battery string; the welding conveying mechanism transports the stacked first type of battery string or the second type of battery string to the welding station; the welding mechanism is arranged at the welding station, and the welding mechanism is configured to weld the stacked first type of battery string or the second type of battery string into a battery string.

[0053] Through the cooperation of the solder strip preparation device, the battery cell loading mechanism, the solder strip transport mechanism, the welding conveying mechanism and the welding mechanism, the string welding machine provided in this application can selectively prepare two types of battery strings, without changing the original production process or adding additional steps, thus saving production costs and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 Schematic diagram of the structure of the first battery string and the second battery string;

[0055] Figure 2 This is a structural schematic diagram of the welding ribbon preparation device after omitting the welding ribbon processing part in the embodiment of the present application;

[0056] Figure 3This is a schematic structural diagram of the solder strip processing portion in an embodiment of the present application at one viewing angle;

[0057] Figure 4 This is a schematic structural diagram of the welding strip processing portion in an embodiment of the present application from another perspective;

[0058] Figure 5 This is a structural diagram of the ribbon processing portion in an embodiment of the present application after omitting several ribbon processing components from one viewing angle;

[0059] Figure 6 Schematic diagram of the structure of the spacing drive assembly in the embodiment of the present application;

[0060] Figure 7 Schematic diagram of the structure of the solder strip processing assembly in the embodiment of the present application at a first viewing angle;

[0061] Figure 8 Schematic diagram of the structure of the solder strip processing assembly in the embodiment of the present application from a second viewing angle;

[0062] Figure 9 Schematic diagram of the structure of the welding ribbon processing assembly in the embodiment of the present application from a third viewing angle;

[0063] Figure 10 This is a structural diagram of the solder strip processing assembly in the embodiment of the present application after omitting some pressing heads from a third viewing angle;

[0064] Figure 11 Schematic diagram of the structure of the cutting part in the embodiment of the present application;

[0065] Figure 12 A schematic diagram of the process of the ribbon processing unit slitting N ribbons located at the 1st to Nth stations to obtain the first and second ribbon groups;

[0066] Figure 13 A schematic diagram of the process of the ribbon processing section slitting N ribbons located at the 2nd to N+1th stations to obtain the third and fourth ribbon groups;

[0067] Figure 14 Schematic diagram of the assembly of the guide mechanism and the first pressing mechanism in the embodiment of the present application;

[0068] Figure 15 Schematic diagram of the structure of the first pressing mechanism in the embodiment of the present application at a first viewing angle;

[0069] Figure 16 Schematic diagram of the structure of the first pressing mechanism in the embodiment of the present application at a second viewing angle;

[0070] Figure 17A schematic diagram of a soldering ribbon supply process of a soldering ribbon supply unit in one embodiment;

[0071] Figure 18 A schematic diagram of a soldering ribbon supply process of a soldering ribbon supply unit in another embodiment;

[0072] Figure 19 It is a structural schematic diagram of the second pressing mechanism, the cutting mechanism and the second transverse movement section from one viewing angle;

[0073] Figure 20 is a structural schematic diagram of the second pressing mechanism, the cutting mechanism, and the second transverse movement section from another perspective;

[0074] Figure 21 Schematic diagram of the structure of the second pressing mechanism and the cutting mechanism;

[0075] Figure 22 It is a structural diagram of the welding strip traction mechanism.

[0076] Figures 1 to 22 Included are:

[0077] Welding ribbon supply unit 1: guide mechanism 11, first pressing mechanism 12, first translation drive assembly 121, second mounting bracket 122, second pressure plate 123, first pressing assembly 124, second pressing mechanism 13, third mounting bracket 131, third pressure plate 132, second pressing assembly 133, cutting mechanism 14, upper cutter 141, lower cutter 142, upper cutter drive member 143, second translation drive assembly 15;

[0078] Welding ribbon processing assembly 2: first mounting bracket 21, clamping portion 22, first pressure plate 221, pressure plate 222, pressure plate drive unit 223, pressure head 224, ejector pin 225, cutting portion 23, fixed cutter 231, movable cutter 232, cutter drive unit 233, movable blade 234;

[0079] The spacing drive assembly 3 includes a driving wheel 31 , a driven wheel 32 , a synchronous belt 33 , and a driving member 34 .

[0080] Welding ribbon traction mechanism 4: fourth mounting bracket 41, fixed clamping plate 42, driving assembly 43, clamping claw 44;

[0081] Base 5: guide rail 51;

[0082] Second traverse division 6;

[0083] The first type of battery string 110 , the second type of battery string 120 , the battery cell 100 , the first welding ribbon group 201 , the second welding ribbon group 202 , the third welding ribbon group 203 , and the fourth welding ribbon group 204 . DETAILED DESCRIPTION

[0084] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are part of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0085] In the existing technology, two stringing machines are typically used to produce the first and second cell strings required for photovoltaic modules, respectively. These strings are then transported to a stacking machine for photovoltaic module production. This production method results in high production and maintenance costs for photovoltaic modules.

[0086] In view of this, the present application provides a welding ribbon preparation device, which is used to prepare the welding ribbon group required for the production of the first type of battery string and the second type of battery string. Figure 1 As shown, the first type of battery string 110 includes a plurality of battery cells 100, a first welding ribbon group 201 covering the odd-numbered grid lines of the battery cells 100, and a second welding ribbon group 202 covering the even-numbered grid lines of the battery cells. The second type of battery string 120 includes a plurality of battery cells 100, a third welding ribbon group 203 covering the odd-numbered grid lines of the battery cells 100, and a fourth welding ribbon group 204 covering the even-numbered grid lines of the battery cells. The battery cells are IBC battery cells.

[0087] like Figures 2 to 5 As shown, the welding ribbon preparation device in the embodiment of the present application includes a welding ribbon supply unit 1, a welding ribbon traction mechanism 4 and a welding ribbon processing unit, wherein:

[0088] The soldering ribbon supply unit 1 is configured to supply N soldering ribbons extending along a first horizontal direction (eg, X direction).

[0089] The strip processing unit is arranged at the back of the strip supply unit 1 (such as Figure 1 The ribbon processing section includes a plurality of ribbon processing assemblies 2 spaced apart along a first horizontal direction. The ribbon processing assembly 2 has N+1 ribbon processing stations spaced apart along a second horizontal direction (e.g., the Y direction), the second horizontal direction being perpendicular to the first horizontal direction.

[0090] The welding ribbon pulling mechanism 4 is located between the welding ribbon supply part 1 and the welding ribbon processing part.

[0091] One of the solder ribbon supply part 1 and the solder ribbon processing part is configured to be able to translate along the second horizontal direction so that the N solder ribbons supplied by the solder ribbon supply part 1 are aligned with the 1st to Nth solder ribbon processing stations of each solder ribbon processing component 2, or so that the N solder ribbons supplied by the solder ribbon supply part 1 are aligned with the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing component.

[0092] When the N solder ribbons supplied by the solder ribbon supply unit 1 are aligned with the 1st to Nth solder ribbon processing stations of each solder ribbon processing assembly 2, the solder ribbon traction mechanism 4 is configured to pull the N solder ribbons to the 1st to Nth solder ribbon processing stations of each solder ribbon processing assembly 2, and each solder ribbon processing assembly 2 is configured to perform slitting and spacing processing on the N solder ribbons to obtain a first solder ribbon group and a second solder ribbon group that are alternately arranged.

[0093] When the N solder ribbons supplied by the solder ribbon supply unit 1 are aligned with the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing assembly 2, the solder ribbon traction mechanism is configured to pull the N solder ribbons to the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing assembly 2, and each solder ribbon processing assembly 2 is configured to perform slitting and spacing processing on the N solder ribbons to obtain a third solder ribbon group and a fourth solder ribbon group that are alternately arranged.

[0094] In order to enable those skilled in the art to more clearly understand the technical solution of the welding application, the following will be combined with Figure 12 and Figure 13 , an exemplary description is given of the specific working process of the welding strip preparation device in the embodiment of the present application.

[0095] Figures 12 to 13 In the embodiment, N is 4, that is, the welding ribbon supply unit 1 releases 4 welding ribbons, and the welding ribbon processing unit cuts the 4 welding ribbons to obtain the first welding ribbon group 201 and the second welding ribbon group 202 required for the first type of battery string, or obtains the third welding ribbon group 203 and the fourth welding ribbon group 204 required for the second type of battery string.

[0096] For the sake of simplicity, Figures 12 to 13 In this embodiment, only two ribbon processing assemblies 2 are included: a first ribbon processing assembly 2 and a second ribbon processing assembly 2, which are arranged along a first direction (e.g., the X direction). Since N is 4, the first ribbon processing assembly 2 and the second ribbon processing assembly 2 each have five ribbon processing stations arranged in sequence along a second direction (e.g., the Y direction).

[0097] When it is necessary to prepare the first welding ribbon group 201 and the second welding ribbon group 202 required for the first type of battery string.

[0098] First, one of the ribbon supply part 1 and the ribbon processing part is controlled to translate along the second horizontal direction so that the four ribbons supplied by the ribbon supply part 1 are aligned with the first ribbon processing component 2 and the first to fourth ribbon processing stations of the second ribbon processing component 2.

[0099] Then, if Figure 12 As shown in (a), the welding ribbon pulling mechanism 4 is controlled to pull the four welding ribbons to the first welding ribbon processing assembly 2 and the first to fourth welding ribbon processing stations of the second welding ribbon processing assembly 2.

[0100] Finally, the first welding strip processing component 2 and the second welding strip processing component 2 perform slitting and spacing processing on the four welding strips, thereby obtaining Figure 12 The first welding ribbon group 201 and the second welding ribbon group 202 are arranged alternately as shown in (b).

[0101] When it is necessary to prepare the third welding ribbon group 203 and the fourth welding ribbon group 204 required for the second type of battery string.

[0102] First, one of the solder strip supply part 1 and the solder strip processing part is controlled to translate along the second horizontal direction so that the four solder strips supplied by the solder strip supply part 1 are aligned with the second to fourth solder strip processing stations of the first solder strip processing component 2 and the second solder strip processing component 2.

[0103] Then, if Figure 13 As shown in (a), the ribbon pulling mechanism 4 is controlled to pull the four ribbons to the first ribbon processing assembly 2 and the second to fifth ribbon processing stations of the second ribbon processing assembly 2.

[0104] Finally, the first welding strip processing component 2 and the second welding strip processing component 2 perform slitting and spacing processing on the four welding strips, thereby obtaining Figure 13 The third welding ribbon group 203 and the fourth welding ribbon group 204 are arranged alternately as shown in (b).

[0105] As can be seen, the solder ribbon preparation device provided in the embodiments of the present application can selectively prepare the solder ribbon sets required for the production of the first and second types of cell strings. Using the solder ribbon preparation device provided in the embodiments of the present application does not require changing the existing production process or adding additional steps, thus reducing the production and maintenance costs of producing photovoltaic modules containing these two types of cell strings.

[0106] In an optional embodiment, the solder ribbon preparation device of the present application further includes a first transverse moving portion, and the solder ribbon supply portion 1 is disposed on a movable component of the first transverse moving portion. The first transverse moving portion 1 is used to drive the solder ribbon supply portion to translate along the second horizontal direction so that the N solder ribbons supplied by the solder ribbon supply portion 1 are aligned with the first to Nth solder ribbon processing stations of each solder ribbon processing assembly 2, or so that the N solder ribbons supplied by the solder ribbon supply portion 1 are aligned with the second to N+1th solder ribbon processing stations of each solder ribbon processing assembly 2.

[0107] When the N soldering ribbons supplied by the soldering ribbon supply unit 1 are aligned with the 1st to Nth soldering ribbon processing stations of each soldering ribbon processing assembly 2, the soldering ribbon traction mechanism 4 can pull the N soldering ribbons to the 1st to Nth soldering ribbon processing stations of each soldering ribbon processing assembly, and each soldering ribbon processing assembly 2 obtains the first soldering ribbon group and the second soldering ribbon group which are alternately arranged by cutting and spacing the N soldering ribbons.

[0108] Similarly, when the N solder ribbons supplied by the solder ribbon supply unit 1 are aligned with the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing component 2, the solder ribbon traction mechanism 4 can pull the N solder ribbons to the 2nd to N+1th solder ribbon processing stations of each solder ribbon processing component, and each solder ribbon processing component 2 obtains the third solder ribbon group and the fourth solder ribbon group that are alternately arranged by cutting and spacing the N solder ribbons.

[0109] In another optional embodiment, the solder ribbon preparation device of the present application further includes a second transverse moving portion, and the solder ribbon processing portion is disposed on a movable component of the second transverse moving portion. The second transverse moving portion is configured to drive the solder ribbon processing portion to translate along a second horizontal direction so that the first to Nth solder ribbon processing stations of each solder ribbon processing assembly 2 are aligned with the N solder ribbons supplied by the solder ribbon supply unit 1, or the second to N+1th solder ribbon processing stations of each solder ribbon processing assembly 2 are aligned with the N solder ribbons supplied by the solder ribbon supply unit 1.

[0110] When the 1st to Nth solder strip processing stations of each solder strip processing assembly 2 are aligned with the N solder strips supplied by the solder strip supply unit 1, the solder strip traction mechanism 4 can traction the N solder strips to the 1st to Nth solder strip processing stations of each solder strip processing assembly, and each solder strip processing assembly 2 obtains the first solder strip group and the second solder strip group which are alternately arranged by slitting and spacing the N solder strips.

[0111] Similarly, when the 2nd to N+1th solder strip processing stations of each solder strip processing component 2 are aligned with the N solder strips supplied by the solder strip supply part 1, the solder strip traction mechanism 4 can traction the N solder strips to the 2nd to N+1th solder strip processing stations of each solder strip processing component, and each solder strip processing component 2 obtains the third solder strip group and the fourth solder strip group that are alternately arranged by cutting and spacing the N solder strips.

[0112] Optionally, after the weld ribbon pulling mechanism 4 pulls the N weld ribbons to the 1st to Nth weld ribbon processing stations of each weld ribbon processing assembly 2, all odd-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies 2 are configured to cooperate in clamping all even-numbered weld ribbons among the N weld ribbons, and are configured to cooperate in guiding all odd-numbered weld ribbons among the N weld ribbons. Each odd-numbered weld ribbon processing assembly 2 is further configured to cut off all odd-numbered weld ribbons at corresponding positions to obtain a plurality of first weld ribbon groups 201. All even-numbered weld ribbon processing assemblies 2 of the multiple weld ribbon processing assemblies 2 are configured to cooperate in clamping all odd-numbered weld ribbons among the N weld ribbons, and are configured to cooperate in guiding all even-numbered weld ribbons among the N weld ribbons. Each even-numbered weld ribbon processing assembly 2 is further configured to cut off all even-numbered weld ribbons at corresponding positions to obtain a plurality of second weld ribbon groups 202.

[0113] For example, Figure 12Taking the illustrated embodiment as an example, the welding ribbon pulling mechanism 4 pulls the four welding ribbons to the first welding ribbon processing assembly 2 and the first to fourth welding ribbon processing stations of the second welding ribbon processing assembly 2 .

[0114] From top to bottom in the figure, the first ribbon processing assembly 2 clamps the second and fourth ribbons (from the left) among the four ribbons, and guides the first and third ribbons among the four ribbons. The first ribbon processing assembly 2 then cuts the first and third ribbons at corresponding positions, thereby obtaining a plurality of first ribbon groups 201.

[0115] At the same time, the second ribbon processing assembly 2 clamps the first and third ribbons of the four ribbons and guides the second and fourth ribbons of the four ribbons. The second ribbon processing assembly 2 then cuts the second and fourth ribbons at corresponding positions, thereby obtaining a plurality of second ribbon groups 202.

[0116] Similarly, after the ribbon pulling mechanism 4 pulls the N ribbons to the 2nd to N+1th ribbon processing stations of each ribbon processing assembly, all odd-numbered ribbon processing assemblies 2 of the plurality of ribbon processing assemblies 2 are configured to cooperate in clamping all odd-numbered ribbons among the N ribbons, and to cooperate in guiding all even-numbered ribbons among the N ribbons. Each odd-numbered ribbon processing assembly 2 is further configured to cut off all even-numbered ribbons at corresponding positions to obtain a plurality of fourth ribbon groups 204. All even-numbered ribbon processing assemblies 2 of the plurality of ribbon processing assemblies 2 are configured to cooperate in clamping all even-numbered ribbons among the N ribbons, and to cooperate in guiding all odd-numbered ribbons among the plurality of N ribbons. Each even-numbered ribbon processing assembly 2 is further configured to cut off all odd-numbered ribbons at corresponding positions to obtain a plurality of third ribbon groups 204.

[0117] For example, Figure 13 Taking the illustrated embodiment as an example, the ribbon pulling mechanism 4 pulls four ribbons to the first ribbon processing assembly 2 and the second to fifth ribbon processing stations of the second ribbon processing assembly 2 .

[0118] From top to bottom in the figure, the first solder strip processing component 2 is configured to cooperate in clamping the first solder strip and the third solder strip among the four solder strips, and to guide the second solder strip and the fourth solder strip among the four solder strips. Then the first solder strip processing component 2 cuts off the second solder strip and the fourth solder strip at the corresponding positions to obtain several fourth solder strip groups 204.

[0119] At the same time, the second weld strip processing component 2 is configured to cooperate in clamping the second weld strip and the fourth weld strip among the four weld strips, and to guide the first weld strip and the third weld strip among the four weld strips. Then the second weld strip processing component 2 cuts off the first weld strip and the third weld strip at the corresponding positions to obtain several third weld strip groups 203.

[0120] It can be seen that by setting up the multiple weld ribbon processing components 2 of the weld ribbon processing part, the multiple weld ribbon processing components 2 of the weld ribbon processing part can cut the N weld ribbons pulled to the 1st to Nth weld ribbon processing stations of each weld ribbon processing component into the first weld ribbon group 201 and the second weld ribbon group 202, and cut the N weld ribbons pulled to the 2nd to N+1th weld ribbon processing stations of each weld ribbon processing component 2 into the third weld ribbon group 203 and the fourth weld ribbon group 204.

[0121] It should be noted that the "clamping" of the soldering ribbons mentioned in this application refers to applying a strong force to clamp and secure the soldering ribbons, preventing them from moving in the first horizontal direction. The "guiding" of the soldering ribbons mentioned in this application refers to merely guiding the soldering ribbons in a limited position, allowing them to move in the first horizontal direction. This facilitates the spacing of the slit soldering ribbons, ultimately resulting in the alternating arrangement of the first and second soldering ribbon groups 201, 202, or the alternating arrangement of the third and fourth soldering ribbon groups 203, 204.

[0122] like Figures 3 to 5 As shown, optionally, the solder strip processing unit in the embodiment of the present application further includes a base 5 and a spacing drive assembly 3, wherein: a plurality of solder strip processing assemblies 2 are arranged on the base 5 along a first horizontal direction. The spacing drive assembly 3 is arranged on the base 5, and after all odd-numbered solder strips and all even-numbered solder strips among the N solder strips are cut, the spacing drive assembly 3 is configured to drive the plurality of solder strip processing assemblies 2 to separate toward both sides relative to the middle position of the base 5 in the first horizontal direction, so as to form a first solder strip group 201 and a second solder strip group 202 that are alternately arranged, or to form a third solder strip group 203 and a fourth solder strip group 204 that are alternately arranged.

[0123] By providing the spacing drive component 3, the spacing drive of multiple welding ribbon processing components 2 is realized, thereby obtaining the alternating first welding ribbon group 201 and the second welding ribbon group 202, or the alternating third welding ribbon group 203 and the fourth welding ribbon group 204.

[0124] like Figures 7 to 9As shown, the optional solder strip processing assembly 2 includes: a first mounting bracket 21 mounted on the base 5; two clamping portions 22 arranged in pairs on the first mounting bracket 21; the two clamping portions 22 are used to clamp one of all odd-numbered solder strips and all even-numbered solder strips in N solder strips from two different positions, and guide the other of all odd-numbered solder strips and all even-numbered solder strips in N solder strips from two different positions. A cutting portion 23 is provided on the first mounting bracket 21 and located between the two clamping portions 22; the cutting portion 23 is used to cut off all solder strips guided by the clamping portions 22.

[0125] Optionally, the clamping portion 22 includes a first pressure plate 221, a pressure plate 222, and a pressure plate drive unit 223, wherein the pressure plate 222 is movably mounted on the first mounting bracket 21 and is in transmission connection with the pressure plate drive unit 223 disposed on the first mounting bracket 21. The top of the pressure plate 222 is provided with N+1 pressure heads 224 corresponding to the ribbon processing stations along the second horizontal direction, each pressure head 224 being located at a corresponding ribbon processing station. The first pressure plate 221 is fixedly mounted on the first mounting bracket 21 and extends along the second horizontal direction. The top of the first pressure plate 221 forms a horizontal pressure surface.

[0126] The clamping parts 22 in all odd-numbered solder strip processing components 2 are provided with ejector pins 225 corresponding to all even-numbered pressure heads 224 in the N+1 pressure heads 224 on the first pressure plate 221, and the upper ends of the ejector pins 225 are higher than the pressure surface. The pressure plate driving unit 223 is configured to drive the pressure plate 222 to press downward toward the first pressure plate 221, so that all even-numbered pressure heads 224 in the N+1 pressure heads 224 can press a solder strip onto the ejector pins 225, and all odd-numbered pressure heads 224 in the N+1 pressure heads 224 can guide a solder strip.

[0127] The clamping parts 22 in all even-numbered solder strip processing components 2 are provided with ejector pins 225 corresponding to all odd-numbered press heads 224 among the N+1 press heads 224 on the first pressure plate 221, and the upper ends of the ejector pins 225 are higher than the pressure surface. The pressure plate driving unit 223 is configured to drive the pressure plate 222 to press downward toward the first pressure plate 221, so that all odd-numbered press heads 224 among the N+1 press heads 224 can press a solder strip onto the ejector pins 225, and all even-numbered press heads 224 among the N+1 press heads 224 can guide a solder strip.

[0128] Still Figure 12 and Figure 13 Taking the embodiment as an example, the clamping portion 22 of the first solder strip processing assembly 2 has a first pressure plate 221 provided with ejector pins 225 corresponding one-to-one to the second pressure head 224 and the fourth pressure head 224 among the five pressure heads 224 .

[0129] like Figure 12 As shown in (a), after the ribbon pulling mechanism 4 pulls the four ribbons to the first ribbon processing assembly 2 and the first to fourth ribbon processing stations of the second ribbon processing assembly 2. For the first ribbon processing assembly 2, when the pressure plate driving unit 223 drives the pressure plate 222 to press down toward the first pressure plate 221, the second pressure head 224 and the fourth pressure head 224 of the clamping portion 22 respectively press the second ribbon and the fourth ribbon onto the ejector pin 225, and the first pressure head 224 and the third pressure head 224 of the clamping portion 22 respectively approach the pressure surface to guide the first ribbon and the third ribbon.

[0130] For the second solder strip processing component 2, when the pressure plate driving unit 223 drives the pressure plate 222 to press down toward the first pressure plate 221, the first pressure head 224 and the third pressure head 224 of the clamping part 22 respectively press the first solder strip and the third solder strip onto the ejector pin 225, and the second pressure head 224 and the fourth pressure head 224 of the clamping part 22 respectively approach the pressure surface to guide the second solder strip and the fourth solder strip.

[0131] like Figure 13 As shown in (a), after the ribbon pulling mechanism 4 pulls the four ribbons to the second to fifth ribbon processing stations of the first ribbon processing assembly 2 and the second ribbon processing assembly 2. For the first ribbon processing assembly 2, when the pressure plate driving unit 223 drives the pressure plate 222 to press downward toward the first pressure plate 221, the second pressure head 224 and the fourth pressure head 224 of the clamping portion 22 respectively press the first and third ribbons onto the ejector pin 225, while the third and fifth pressure heads 224 of the clamping portion 22 are close to the pressure surface and reserved with a small gap to guide the second and fourth ribbons.

[0132] For the second solder strip processing component 2, when the pressure plate driving unit 223 drives the pressure plate 222 to press down toward the first pressure plate 221, the third pressure head 224 and the fifth pressure head 224 of the clamping part 22 respectively press the second solder strip and the fourth solder strip onto the ejector pin 225, and the second pressure head 224 and the fourth pressure head 224 of the clamping part 22 are respectively close to the pressure surface and reserve a small gap to guide the first solder strip and the third solder strip.

[0133] like Figure 11As shown, the cutting unit 23 optionally includes a fixed cutter 231, a movable cutter 232, and a cutter drive unit 233. The fixed cutter 231 is fixedly mounted on the first mounting bracket 21 and extends along the second horizontal direction. A fixed blade is formed at the upper edge of the fixed cutter 231. The movable cutter 232 is arbitrarily mounted on the first mounting bracket 21 and is in driving connection with the cutter drive unit 233 disposed on the first mounting bracket 21.

[0134] The cutting portion 23 in all odd-numbered solder strip processing components 2 has a movable blade 234 of the movable cutter 232 at the upper edge thereof protruding upward and corresponding to all odd-numbered solder strip processing stations in the N+1 solder strip processing stations. The cutter drive unit 233 is configured to drive the movable cutter 232 to slide downward so that each movable blade 234 and the fixed cutter 231 can cooperate to cut off a solder strip.

[0135] The cutting portion 23 in all even-numbered solder strip processing components 2 has a movable blade 234 of the movable cutter 232 at the upper edge thereof protruding upward and corresponding to all even-numbered solder strip processing stations in the N+1 solder strip processing stations. The cutter drive unit 233 is configured to drive the movable cutter 232 to slide downward so that each movable blade 234 and the fixed cutter 231 can cooperate to cut off a solder strip.

[0136] By setting the cutting parts 23 in all odd-numbered solder strip processing components 2, the cutting parts 23 in all odd-numbered solder strip processing components 2 can cut off all odd-numbered solder strips in the N solder strips pulled to the 1st to Nth solder strip processing stations to obtain the first solder strip group, and the cutting parts 23 in all odd-numbered solder strip processing components 2 can cut off all even-numbered solder strips in the N solder strips pulled to the 2nd to N+1th solder strip processing stations to obtain the fourth solder strip group.

[0137] Similarly, by setting the cutting parts 23 in all even-numbered weld strip processing components 2, the cutting parts 23 in all even-numbered weld strip processing components 2 can cut off all even-numbered weld strips in the N weld strips pulled to the 1st to Nth weld strip processing stations to obtain a second weld strip group, and the cutting parts 23 in all even-numbered weld strip processing components 2 can cut off all odd-numbered weld strips in the N weld strips pulled to the 2nd to N+1th weld strip processing stations to obtain a third weld strip group.

[0138] Still Figure 12 and Figure 13 Take the embodiment as an example, Figure 12As shown in (a) and (b) in FIG, the cutting portion 23 in the first ribbon processing assembly 2 can cut the first ribbon and the third ribbon of the four ribbons pulled to the first to fourth ribbon processing stations to obtain the first ribbon group 201. Figure 13 As shown in (a) and (b), the cutting portion 23 in the first solder strip processing assembly 2 can cut off all the second and fourth solder strips among the four solder strips pulled to the second to fifth solder strip processing stations to obtain the fourth solder strip group 204.

[0139] like Figure 12 As shown in (a) and (b) in FIG, the cutting portion 23 in the second ribbon processing assembly 2 can cut the second ribbon and the fourth ribbon of the four ribbons pulled to the first to fourth ribbon processing stations to obtain the second ribbon group 202. Figure 13 As shown in (a) and (b), the cutting portion 23 in the second solder strip processing assembly 2 can cut off all the first and third solder strips among the four solder strips pulled to the second to fifth solder strip processing stations to obtain a third solder strip group 203.

[0140] Optionally, the ribbon processing unit in the embodiment of the present application includes 2M+1 ribbon processing components 2, that is, the number of ribbon processing components 2 is an odd number. In this case, the M+1th ribbon processing component 2 (that is, the ribbon processing component 2 located in the middle) can be fixedly connected to the base 5, and the remaining 2M ribbon processing components 2 are all slidably connected to the base 5, and the spacing drive component includes M spacing drive members 3. Among them: the i-th spacing drive member is used to drive the i-th ribbon processing component 2 and the 2M+2-ith ribbon processing component to move toward the center of the base 5 or to separate to both sides, wherein 1≤i≤M.

[0141] by Figures 3 to 5 Taking the solder strip processing device in the embodiment as an example, it includes 13 solder strip processing components 2, that is, M=6, among which the 7th solder strip processing component 2 located in the middle position is fixedly connected to the base 5, and the remaining 12 solder strip processing components 2 are all slidably connected to the base 5.

[0142] The distance drive assembly includes 6 distance drive members 3, wherein:

[0143] The first spacing driving member 3 is used to drive the first solder strip processing component 2 and the thirteenth solder strip processing component 2 to move toward the middle of the base 5 (that is, the position of the seventh solder strip processing component 2) or to separate to both sides.

[0144] The second spacing driving member 3 is used to drive the second solder strip processing assembly 2 and the twelfth solder strip processing assembly 2 to move toward the center of the base 5 or to separate toward both sides.

[0145] The third spacing driving member 3 is used to drive the third solder strip processing component 2 and the eleventh solder strip processing component 2 to move toward the center of the base 5 or to separate toward both sides.

[0146] The fourth spacing driving member 3 is used to drive the fourth solder strip processing assembly 2 and the tenth solder strip processing assembly 2 to move toward the center of the base 5 or to separate toward both sides.

[0147] The fifth spacing driving member 3 is used to drive the fifth solder strip processing component 2 and the ninth solder strip processing component 2 to move toward the center of the base 5 or to separate toward both sides.

[0148] The sixth spacing driving member 3 is used to drive the sixth solder strip processing component 2 and the eighth solder strip processing component 2 to move toward the center of the base 5 or to separate toward both sides.

[0149] Of course, in another embodiment, the ribbon processing unit may also include 2M ribbon processing assemblies 2, i.e., the number of ribbon processing assemblies 2 is an even number. In this case, all 2M ribbon processing assemblies 2 are slidably connected to the base 5, and the spacing drive assembly includes M spacing drive members 3, wherein the i-th spacing drive member 3 is used to drive the i-th ribbon processing assembly 2 and the 2M+1-i-th ribbon processing assembly 2 to move toward the center of the base 5 or to separate toward the sides.

[0150] For example, the welding ribbon processing device includes 12 welding ribbon processing components 2 , that is, n=6, and the 12 welding ribbon processing components 2 are all slidably connected to the base 5 .

[0151] The distance drive assembly includes 6 distance drive members 3, wherein:

[0152] The first spacing driving member 3 is used to drive the first solder strip processing assembly 2 and the twelfth solder strip processing assembly 2 to move toward the center of the bottom plate 1 or to separate toward both sides.

[0153] The second spacing driving member 3 is used to drive the second solder strip processing assembly 2 and the eleventh solder strip processing assembly 2 to move toward the center of the bottom plate 1 or to separate toward both sides.

[0154] The third spacing driving member 3 is used to drive the third solder strip processing assembly 2 and the tenth solder strip processing assembly 2 to move toward the center of the bottom plate 1 or to separate toward both sides.

[0155] The fourth spacing driving member 3 is used to drive the fourth solder strip processing assembly 2 and the ninth solder strip processing assembly 2 to move toward the center of the bottom plate 1 or to separate toward both sides.

[0156] The fifth spacing driving member 3 is used to drive the fifth solder strip processing component 2 and the eighth solder strip processing component 2 to move toward the center of the bottom plate 1 or to separate toward both sides.

[0157] The sixth spacing driving member 3 is used to drive the sixth solder strip processing assembly 2 and the seventh solder strip processing assembly 2 to move toward the center of the bottom plate 1 or to separate toward both sides.

[0158] By configuring the spacing drive assembly to include M spacing drive members 3, the spacing drive assembly can independently drive each pair of welding ribbon processing assemblies 2 to move in the opposite direction, ultimately causing 2M welding ribbon processing assemblies 2 or 2M+1 welding ribbon processing assemblies 2 to quickly separate to the sides or move toward the center of the base, thereby completing the spacing adjustment of the first welding ribbon group 201 and the second welding ribbon group 202 obtained by slitting, or completing the spacing adjustment of the third welding ribbon group 203 and the fourth welding ribbon group 204 obtained by slitting. In this way, the first welding ribbon group 201 and the second welding ribbon group 202, or the third welding ribbon group 203 and the fourth welding ribbon group 204, arranged alternately are obtained.

[0159] Optionally, the spacing drive member 3 includes a driving wheel 31, a driven wheel 32, a synchronous belt 33, and a driving member 34, wherein the driving wheel 31 and the driven wheel 32 are rotatably mounted on the base 5, the synchronous belt 33 is mounted on the driving wheel 31 and the driven wheel 32 along a first horizontal direction, and the driving member 34 is used to drive the driving wheel 31 to rotate, thereby driving the synchronous belt 33 to rotate. The i-th welding ribbon processing assembly 2 is fixedly connected to the first side of the synchronous belt 33, and the 2M+1-i-th welding ribbon processing assembly 2 or the 2M+2-i-th welding ribbon processing assembly 2 is fixedly connected to the second side of the synchronous belt 33. When the driving member 34 drives the synchronous belt 33 to rotate, it drives the i-th welding ribbon processing assembly 2 and the 2M+1-i-th welding ribbon processing assembly 2 or the 2M+2-i-th welding ribbon processing assembly 2 to move toward the center of the base 5 or to separate to the sides.

[0160] The synchronous belt drive method can ensure that the corresponding two welding strip processing components 2 move in opposite directions at the same speed to move closer to the middle of the base 5 or separate to both sides. Compared with other transmission methods, it has a simple structure, low cost and easy maintenance.

[0161] Optionally, among the M spacing driving components 3 , the i-th spacing driving component 3 drives the corresponding solder strip processing component 2 to separate to both sides before the (i+1)-th spacing driving component 3 .

[0162] Specifically, still Figures 3 to 5Taking the ribbon processing unit in the embodiment as an example, the first spacing driver 3 first drives the first and thirteenth ribbon processing assemblies 2 to separate, the second spacing driver 3 drives the second and twelfth ribbon processing assemblies 2 to separate, then the third, fourth, fifth, and sixth spacing drivers 3 sequentially or simultaneously drive the corresponding two ribbon processing assemblies 2 to separate at regular intervals, ultimately completing the spacing adjustment between the first and second ribbon groups 201, 202, or between the third and fourth ribbon groups 203, 204. It can be seen that the pair of ribbon processing assemblies 2 farthest from the center of the base 5 are driven first to separate, and the pair of ribbon processing assemblies 2 closest to the center of the base 5 are driven last to separate.

[0163] By setting the driving sequence of the M spacing drivers 3 in this manner, it is possible to ensure that each ribbon processing assembly 2 is not blocked by its adjacent ribbon processing assembly 2 while it is separating to form a spacing. This prevents the ends of the first ribbon group 201 and the second ribbon group 202, or the ends of the third ribbon group 203 and the fourth ribbon group 204 from being deformed due to collision.

[0164] like Figure 6 As shown, the base 5 is optionally further provided with at least one guide rail 51 extending along a first horizontal direction, and the plurality of ribbon processing assemblies 2 are slidably connected to the guide rail 11 via sliders. The guide rail 11 provides sliding guidance for all the ribbon processing assemblies 2, preventing the ribbon processing assemblies 2 from wandering and causing the position of the ribbon to shift.

[0165] like Figure 2 As shown, optionally, the welding ribbon supply unit 1 includes a welding ribbon unloading mechanism (not shown in the figure), a first pressing mechanism 12, a second pressing mechanism 13 and a cutting mechanism 14 arranged in sequence along the first horizontal direction, wherein: the N welding ribbons released by the welding ribbon unloading mechanism pass through the first pressing mechanism 12, the second pressing mechanism 13 and the cutting mechanism 14 in sequence. The first pressing mechanism 12 is configured to be able to press all odd-numbered welding ribbons and one of all even-numbered welding ribbons among the N welding ribbons, and to translate along the first horizontal direction to adjust the position of the free end of the clamped welding ribbon. The welding ribbon pulling mechanism 4 is configured to clamp the free ends of the N welding ribbons from the cutting mechanism 14 and pull the N welding ribbons to the welding ribbon processing unit.

[0166] The welding ribbon processing portion is configured to cut off one of all odd-numbered welding ribbons and all even-numbered welding ribbons among the N welding ribbons, the cutting mechanism 14 is configured to cut off the other of all odd-numbered welding ribbons and all even-numbered welding ribbons among the N welding ribbons, and the first clamping mechanism 12 and the second clamping mechanism 13 are configured to clamp the N welding ribbons when the welding ribbons are cut.

[0167] Through the cooperation of the solder strip feeding mechanism, the first clamping mechanism 12, the second clamping mechanism 13 and the cutting mechanism 14, the solder strip supply unit 1 can automatically supply N solder strips, and can automatically adjust the free ends of the N solder strips so that the arrangement of the free ends of the N solder strips is consistent with the arrangement of the solder strip group to be prepared.

[0168] For example, Figure 17 As shown, in one embodiment, it is necessary to prepare the first welding ribbon group and the second welding ribbon group required for the production of the first battery string. Correspondingly, the welding ribbon pulling mechanism 4 needs to Figure 17 The four solder strips arranged in the pattern shown in (b) are pulled onto the solder strip processing portion. That is, the free ends of the first and third solder strips need to exceed the free ends of the second and fourth solder strips.

[0169] However, if Figure 17 As shown in (a), the initial arrangement of the four ribbons to be pulled is such that the free ends of the second and fourth ribbons (as indicated by the dotted lines in the figure) exceed those of the first and third ribbons. Therefore, before pulling the ribbons to the ends, the free ends of the ribbons need to be adjusted. Specifically:

[0170] The first pressing mechanism 12 only presses the second and fourth welding strips, and the second pressing mechanism 13 only presses the first and third welding strips. Subsequently, the first pressing mechanism 12 moves a predetermined distance in the opposite direction of the first horizontal direction, so that the free ends of the second and fourth welding strips retreat and lag behind the free ends of the first and third welding strips, ultimately ensuring that the welding strip pulling mechanism 4 can Figure 17 The four solder strips arranged in the pattern shown in (b) are pulled onto the solder strip processing portion.

[0171] After the welding ribbon is pulled onto the welding ribbon processing unit, the welding ribbon processing unit cuts the first and third welding ribbons, and the cutting mechanism 14 cuts the second and fourth welding ribbons. During the cutting process, the first clamping mechanism 12 and the second clamping mechanism 13 can clamp the welding ribbon to prevent the welding ribbon from shrinking.

[0172] Relatively speaking, the first clamping mechanism 12 can also only clamp the first and third welding strips, and the second clamping mechanism 13 can only clamp the second and fourth welding strips, so that the first clamping mechanism 12 moves a predetermined distance along the first horizontal direction, which can also achieve the purpose of adjusting the free end of the welding strip.

[0173] Also, such as Figure 18 As shown, in another embodiment, it is necessary to prepare the third welding ribbon group and the fourth welding ribbon group required for the production of the second battery string. Correspondingly, the welding ribbon pulling mechanism 4 needs to be as follows Figure 18The four solder strips of the layout shown in (b) are pulled onto the solder strip processing portion. That is, the free ends of the second and fourth solder strips need to extend forward and exceed the free ends of the first and third solder strips.

[0174] like Figure 18 As shown in (a), the initial arrangement of the four ribbons to be pulled meets the requirements. Therefore, there is no need to adjust the free ends of the ribbons. The ribbon pulling mechanism 4 can directly pull the ribbons to the ribbon processing unit.

[0175] After the welding ribbon is pulled onto the welding ribbon processing unit, the welding ribbon processing unit cuts the second and fourth welding ribbons, and the cutting mechanism 14 cuts the first and third welding ribbons. During the cutting process, the first clamping mechanism 12 and the second clamping mechanism 13 can clamp the welding ribbon to prevent the welding ribbon from shrinking.

[0176] like Figures 15 and 16 As shown, optionally, the first clamping mechanism 12 includes a first translation drive assembly 121, a second mounting bracket 122, a second pressure plate 123, and a first clamping assembly 124, wherein: the second mounting bracket 122 is connected to the movable part of the first translation drive assembly 121, and the first translation drive assembly 121 is used to drive the second mounting bracket 122 to translate along the first horizontal direction or the opposite direction. The second pressure plate 123 is horizontally arranged on the second mounting bracket 121. The first clamping assembly 124 includes a plurality of first clamping members arranged along the second horizontal direction, and all the first clamping members can control the clamping action independently of each other. The first clamping assembly 124 can be used to clamp all odd-numbered welding strips and one of all even-numbered welding strips onto the second pressure plate 123, and each first clamping member is used to clamp one welding strip.

[0177] By setting the first clamping mechanism 12, the first clamping mechanism 12 can clamp all odd-numbered welding strips and one of all even-numbered welding strips among the N welding strips, and adjust the position of the free end of the clamped welding strip along the first horizontal direction.

[0178] like Figures 19 to 21 As shown, optionally, the second clamping mechanism 13 includes a third mounting bracket 131, a third pressure plate 132, and a second clamping assembly 133, wherein: the third pressure plate 132 is horizontally arranged on the third mounting bracket 131. The second clamping assembly 133 includes a plurality of second clamping members arranged along the second horizontal direction, and all second clamping members can independently control the clamping action of each other. The second clamping assembly 133 can be used to clamp all odd-numbered welding strips and the other of all even-numbered welding strips onto the third pressure plate 132, and each second clamping member is used to clamp one welding strip. The surface of the third pressure plate 132 is also formed with a comb tooth structure for placing and guiding the welding strips.

[0179] Continue to refer Figures 19 to 21 As shown, the cutting mechanism 14 is optionally slidably connected to the third mounting bracket 131. A second translation drive assembly 15 is also provided on the third mounting bracket 131, with the cutting mechanism 14 being in driving connection with the second translation drive assembly 15. After the cutting mechanism 14 cuts the solder ribbon, the second translation drive assembly 15 is used to drive the cutting mechanism 14 away from the solder ribbon processing portion, so that the new free end of the severed solder ribbon extends beyond the cutting mechanism 14, facilitating the solder ribbon pulling mechanism 4 to grasp the new free end of the solder ribbon from the cutting mechanism 14.

[0180] like Figure 21 As shown, the cutting mechanism 14 optionally includes an upper cutter 141, a lower cutter 142, and an upper cutter driver 143, wherein the lower cutter 142 is fixedly mounted on the third mounting bracket 131. The upper cutter 141 is slidably connected to the third mounting bracket 131 and is connected to the driving end of the upper cutter driver 143. In particular, an escape groove is spaced apart at the lower edge of the upper cutter 141. When the upper cutter driver 143 drives the upper cutter 141 down to align with the lower cutter 142, the upper cutter 141 and the lower cutter 142 cooperate to cut one of all odd-numbered weld ribbons and all even-numbered weld ribbons among the N weld ribbons. The other of all odd-numbered weld ribbons and all even-numbered weld ribbons among the N weld ribbons passes through the escape groove of the upper cutter 141 and is not cut.

[0181] like Figure 2 and Figure 14 As shown, optionally, the solder strip supply unit 1 further includes a guide mechanism 11 disposed between the solder strip unloading mechanism and the first pressing mechanism 12, and the guide mechanism 11 is used to guide the N solder strips unloaded by the solder strip unloading mechanism toward the first pressing mechanism 12. Figure 14 As shown, the guide mechanism 11 may be composed of a plurality of guide rollers, which are arranged along the second direction. The guide rollers are provided with guide grooves, and each guide groove is used to guide a welding strip.

[0182] As mentioned above, in an optional embodiment, the ribbon supply unit 1 is disposed on a movable component of the first transverse moving unit. The ribbon supply unit is driven by the first transverse moving unit 1 to translate along the second horizontal direction so that the N ribbons supplied by the ribbon supply unit 1 are aligned with the first to Nth ribbon processing stations of each ribbon processing assembly 2, or so that the N ribbons supplied by the ribbon supply unit 1 are aligned with the second to N+1th ribbon processing stations of each ribbon processing assembly 2.

[0183] In an optional embodiment, the first transverse movement portion is an integrated mechanism, for example, it includes a transverse movement drive module and a mounting base horizontally connected to the driving end of the transverse movement drive module. All components of the solder strip supply portion 1, including the solder strip discharge mechanism (not shown in the figure), the guide mechanism 11, the first clamping mechanism 12, the second clamping mechanism 13 and the cutting mechanism 14 are all arranged on the mounting base. The transverse movement drive module drives the mounting base to move horizontally along the second horizontal direction, thereby driving the supply portion 1 to move as a whole.

[0184] In another optional embodiment, the first transverse portion is a split mechanism, which includes a first transverse sub-portion and a second transverse sub-portion 6. Figure 1 、 Figure 19 and Figure 20 As shown, the welding strip unloading mechanism (not shown in the figure), the guide mechanism 11, and the first pressing mechanism 12 are arranged on the first transverse movement sub-section (not shown in the figure), and the third pressure plate 132 of the second pressing mechanism 13 is arranged on the second transverse movement sub-section 6. When the first transverse movement sub-section drives the welding strip unloading mechanism (not shown in the figure), the guide mechanism 11, and the first pressing mechanism 12 to translate along the second horizontal direction, the second transverse movement sub-section 6 synchronously drives the third pressure plate 132 to translate along the second horizontal direction, thereby causing all the welding strips to move as a whole along the second horizontal direction.

[0185] like Figure 22 As shown, optionally, the welding ribbon traction mechanism 4 includes a movable module (not shown in the figure), a fourth mounting bracket 41, a fixed clamping plate 42, a driving assembly 43 and N+1 clamping jaws 44, wherein: the fourth mounting bracket 41 is connected to the movable part of the movable module, and the movable module is used to drive the fourth mounting bracket 41 to translate in the first horizontal direction and to rise and fall in the vertical direction. The fixed clamping plate 42 is fixedly connected to the fourth mounting bracket 41. The N+1 clamping jaws 44 are arranged on the fourth mounting bracket 41 along the second horizontal direction, and are all transmission-connected to the driving end of the driving assembly 43. The driving assembly 43 is used to drive the N+1 clamping jaws 44 to rotate toward or away from the fixed clamping plate 42, so that each clamping jaw 44 can press a welding ribbon onto the fixed clamping plate 42.

[0186] The ribbon pulling mechanism 4 is configured so that it can clamp the free ends of N ribbons from the cutting mechanism 14 and pull the N ribbons to the ribbon processing unit. Since the ribbon pulling mechanism 4 is provided with N+1 clamping claws 44, after the ribbon supply unit 1 adjusts the positions of the N supplied ribbons, the ribbon pulling mechanism 4 can still clamp the N ribbons, without the need for position adjustment in the second direction.

[0187] In an embodiment of the present application, a string welding machine is also provided, which includes a solder strip preparation device, a cell feeding mechanism, a solder strip transport mechanism, a welding conveying mechanism and a welding mechanism provided in any of the above embodiments, wherein: the cell feeding mechanism is used to pick up a number of IBC cells and transport the picked-up cells to the welding conveying mechanism. The solder strip transporting mechanism is configured to pick up the solder strip group prepared by the solder strip preparation device, transport the solder strip group to the welding conveying mechanism, and stack the solder strip group and the cell according to a predetermined rule to form a first type of cell string or a second type of cell string. The welding conveying mechanism transports the stacked first type of cell string or the second type of cell string to the welding station. The welding mechanism is arranged at the welding station, and the welding mechanism is configured to weld the stacked first type of cell string or the second type of cell string into a cell string.

[0188] Through the cooperation of the solder strip preparation device, the battery cell loading mechanism, the solder strip transport mechanism, the welding conveying mechanism and the welding mechanism, the string welding machine provided in this application can selectively prepare two types of battery strings, without changing the original production process or adding additional steps, thus saving production costs and maintenance costs.

[0189] In the above description of this application, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood in a broad sense. For example, with respect to the term "connected," it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. Therefore, unless otherwise expressly specified in this application, those skilled in the art can understand the specific meanings of the above terms in this application based on the specific circumstances.

[0190] According to the above description of the present application, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or position relationships, are based on the orientation or position relationships shown in the drawings of the present application, and are only for the purpose of facilitating the explanation of the scheme of the present application and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present application.

[0191] In addition, the terms "first" or "second" used in this application to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0192] Although multiple embodiments of the present application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art can conceive of many changes, modifications, and alternatives without departing from the thought and spirit of the present application. It should be understood that in the process of practicing the present application, various alternatives to the embodiments of the present application described herein can be adopted. The accompanying claims are intended to define the scope of protection of the present application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A welding strip preparation device, characterized in that: The welding ribbon preparation device is used to prepare welding ribbon groups required for the production of the first type of battery string and the second type of battery string. The first type of battery string includes a plurality of battery cells, a first welding ribbon group covering the odd-numbered grid lines of the battery cells, and a second welding ribbon group covering the even-numbered grid lines of the battery cells. The second type of battery string includes a plurality of battery cells, a third welding ribbon group covering the odd-numbered grid lines of the battery cells, and a fourth welding ribbon group covering the even-numbered grid lines of the battery cells. The battery cells are IBC battery cells. The welding ribbon preparation device includes a welding ribbon supply part, a welding ribbon pulling mechanism and a welding ribbon processing part, wherein: The soldering ribbon supply unit is configured to supply N soldering ribbons extending along a first horizontal direction; The ribbon processing unit is disposed in the downstream of the ribbon supply unit, and includes a plurality of ribbon processing assemblies spaced apart along the first horizontal direction. The ribbon processing assembly includes N+1 ribbon processing stations spaced apart along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction. The welding ribbon pulling mechanism is located between the welding ribbon supply portion and the welding ribbon processing portion; One of the solder ribbon supply unit and the solder ribbon processing unit is configured to be capable of translation along the second horizontal direction so that the N solder ribbons supplied by the solder ribbon supply unit are aligned with the first to Nth solder ribbon processing stations of each of the solder ribbon processing assemblies, or so that the N solder ribbons supplied by the solder ribbon supply unit are aligned with the second to N+1th solder ribbon processing stations of each of the solder ribbon processing assemblies; When the N solder ribbons supplied by the solder ribbon supply unit are aligned with the first to Nth solder ribbon processing stations of each of the solder ribbon processing assemblies, the solder ribbon pulling mechanism is configured to pull the N solder ribbons to the first to Nth solder ribbon processing stations of each of the solder ribbon processing assemblies, and each of the solder ribbon processing assemblies is configured to perform slitting and spacing processing on the N solder ribbons to obtain the first solder ribbon group and the second solder ribbon group that are alternately arranged; When the N solder ribbons supplied by the solder ribbon supply section are aligned with the 2nd to N+1th solder ribbon processing stations of each of the solder ribbon processing components, the solder ribbon traction mechanism is configured to pull the N solder ribbons to the 2nd to N+1th solder ribbon processing stations of each of the solder ribbon processing components, and each of the solder ribbon processing components is configured to perform slitting and spacing processing on the N solder ribbons to obtain the third solder ribbon group and the fourth solder ribbon group that are alternately arranged.

2. The welding strip preparation device according to claim 1, characterized in that: The welding ribbon preparation device further comprises a first transverse moving portion, and the welding ribbon supply portion is arranged on a movable component of the first transverse moving portion; The first transverse movement portion is used to drive the solder ribbon supply portion to translate along the second horizontal direction so that the N solder ribbons supplied by the solder ribbon supply portion are aligned with the 1st to Nth solder ribbon processing stations of each of the solder ribbon processing components, or so that the N solder ribbons supplied by the solder ribbon supply portion are aligned with the 2nd to N+1th solder ribbon processing stations of each of the solder ribbon processing components.

3. The welding strip preparation device according to claim 1, characterized in that: The welding ribbon preparation device further includes a second transverse moving portion, and the welding ribbon processing portion is arranged on a movable component of the second transverse moving portion; The second transverse movement portion is used to drive the solder strip processing portion to translate along the second horizontal direction so that the first to Nth solder strip processing stations of each of the solder strip processing components are aligned with the N solder strips supplied by the solder strip supply portion, or the second to N+1th solder strip processing stations of each of the solder strip processing components are aligned with the N solder strips supplied by the solder strip supply portion.

4. The welding strip preparation device according to claim 1, characterized in that: After the welding ribbon pulling mechanism pulls the N welding ribbons to the 1st to Nth welding ribbon processing stations of each welding ribbon processing assembly, all odd-numbered welding ribbon processing assemblies of the plurality of welding ribbon processing assemblies are configured to cooperate in clamping all even-numbered welding ribbons in the N welding ribbons, and are configured to cooperate in guiding all odd-numbered welding ribbons in the N welding ribbons, and each odd-numbered welding ribbon processing assembly is further configured to cut off all odd-numbered welding ribbons at corresponding positions to obtain a plurality of first welding ribbon groups; all even-numbered welding ribbon processing assemblies of the plurality of welding ribbon processing assemblies are configured to cooperate in clamping all odd-numbered welding ribbons in the N welding ribbons, and are configured to cooperate in guiding all even-numbered welding ribbons in the N welding ribbons, and each even-numbered welding ribbon processing assembly is further configured to cut off all even-numbered welding ribbons at corresponding positions to obtain a plurality of second welding ribbon groups; After the weld ribbon traction mechanism pulls the N weld ribbons to the 2nd to N+1th weld ribbon processing stations of each weld ribbon processing assembly, all odd-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies are configured to cooperate in clamping all odd-numbered weld ribbons in the N weld ribbons, and are configured to cooperate in guiding all even-numbered weld ribbons in the N weld ribbons, and each odd-numbered weld ribbon processing assembly is further configured to cut off all even-numbered weld ribbons at corresponding positions to obtain a number of the fourth weld ribbon groups; all even-numbered weld ribbon processing assemblies of the multiple weld ribbon processing assemblies are configured to cooperate in clamping all even-numbered weld ribbons in the N weld ribbons, and are configured to cooperate in guiding all odd-numbered weld ribbons in the multiple N weld ribbons, and each even-numbered weld ribbon processing assembly is further configured to cut off all odd-numbered weld ribbons at corresponding positions to obtain a number of the third weld ribbon groups.

5. The welding strip preparation device according to claim 4, characterized in that: The welding strip processing unit further includes a base and a spacing drive assembly, wherein: A plurality of the welding ribbon processing components are arranged on the base along the first horizontal direction; The spacing drive component is arranged on the base. After all odd-numbered solder strips and all even-numbered solder strips among the N solder strips are cut off, the spacing drive component is configured to drive the multiple solder strip processing components to separate to both sides relative to the middle position of the base in the first horizontal direction to form the first solder strip group and the second solder strip group that are alternately arranged, or to form the third solder strip group and the fourth solder strip group that are alternately arranged.

6. The welding strip preparation device according to claim 5, characterized in that: The welding ribbon processing assembly includes: a first mounting bracket mounted on the base; Two clamping portions are provided in pairs on the first mounting bracket, the two clamping portions being used to clamp one of all odd-numbered welding ribbons and all even-numbered welding ribbons among the N welding ribbons from two different positions, and to guide the other of all odd-numbered welding ribbons and all even-numbered welding ribbons among the N welding ribbons from two different positions; A cutting portion is provided on the first mounting bracket and located between the two clamping portions, wherein the cutting portion is used to cut off all welding strips guided by the clamping portions.

7. The welding strip preparation device according to claim 6, characterized in that: The clamping portion includes a first pressure-bearing plate, a pressure plate, and a pressure plate driving unit, wherein: The pressing plate is movably mounted on the first mounting bracket and is in transmission connection with the pressing plate driving unit provided on the first mounting bracket. The top of the pressing plate is provided with N+1 pressing heads corresponding to the ribbon processing stations along the second horizontal direction, and each pressing head is located at the corresponding ribbon processing station. The first pressure-bearing plate is fixedly mounted on the first mounting bracket and extends along the second horizontal direction. A horizontal pressure-bearing surface is formed on the top of the first pressure-bearing plate, wherein: The clamping parts of all odd-numbered solder strip processing assemblies are provided with ejector pins in one-to-one correspondence with all even-numbered press heads among the N+1 press heads, and the upper ends of the ejector pins are higher than the pressure-bearing surface. The pressure plate driving unit is configured to drive the pressure plate downward toward the first pressure plate, so that all even-numbered press heads among the N+1 press heads can press a solder strip onto the ejector pins, and all odd-numbered press heads among the N+1 press heads can guide a solder strip; The clamping parts in all even-numbered solder strip processing components are provided with ejector pins on the first pressure plate corresponding to all odd-numbered pressure heads among the N+1 pressure heads, and the upper ends of the ejector pins are higher than the pressure surface. The pressure plate driving unit is configured to drive the pressure plate downward toward the first pressure plate, so that all odd-numbered pressure heads among the N+1 pressure heads can press a solder strip onto the ejector pins, and all even-numbered pressure heads among the N+1 pressure heads can guide a solder strip.

8. The welding strip preparation device according to claim 6, characterized in that: The cutting unit includes a fixed cutter, a movable cutter and a cutter drive unit, wherein: The fixed cutter is fixedly mounted on the first mounting bracket and extends along the second horizontal direction, and a fixed blade is formed at an upper edge of the fixed cutter; The movable cutter is movably mounted on the first mounting bracket and is in transmission connection with the cutter drive unit provided on the first mounting bracket; The cutting portion in all odd-numbered ribbon processing assemblies has a movable blade protruding upward at the upper edge of the movable cutter, which corresponds to all odd-numbered ribbon processing stations in the N+1 ribbon processing stations, and the cutter drive unit is configured to drive the movable cutter to slide downward so that each movable blade and the fixed cutter can cooperate to cut a ribbon; The cutting portion in all even-numbered solder strip processing components has a movable blade at the upper side edge of the movable cutter protruding upward and corresponding to all even-numbered solder strip processing stations in the N+1 solder strip processing stations, and the cutter drive unit is configured to drive the movable cutter to slide downward so that each movable blade and the fixed cutter can cooperate to cut off a solder strip.

9. The welding strip preparation device according to claim 5, characterized in that: The ribbon processing portion includes 2M ribbon processing components, each of which is slidably connected to the base. The spacing drive component includes M spacing drive members, wherein: The i-th spacing driving member is used to drive the i-th welding strip processing component and the 2M+1-i-th welding strip processing component to move toward the middle of the base or to separate toward both sides; or, The ribbon processing unit includes 2M+1 ribbon processing components, the M+1 ribbon processing component is fixedly connected to the base, and the remaining 2M ribbon processing components are slidably connected to the base. The spacing drive component includes M spacing drive members, wherein: The i-th spacing driving component is used to drive the i-th welding ribbon processing component and the 2M+2-i-th welding ribbon processing component to move toward the middle of the base or to separate toward both sides; Among them, 1≤i≤M.

10. The welding strip preparation device according to claim 9, characterized in that: The separation drive member includes a driving wheel, a driven wheel, a synchronous belt and a driving member, wherein: The driving wheel and the driven wheel are rotatably mounted on the base, the synchronous belt is sleeved on the driving wheel and the driven wheel along the first horizontal direction, and the driving member is used to drive the driving wheel to rotate, thereby driving the synchronous belt to rotate; The i-th welding strip processing assembly is fixedly connected to the first side belt body of the synchronous belt, and the 2M+1-i-th welding strip processing assembly or the 2M+2-i-th welding strip processing assembly is fixedly connected to the second side belt body of the synchronous belt; When the driving member drives the synchronous belt to rotate, the i-th welding ribbon processing component and the 2M+1-i-th welding ribbon processing component or the 2M+2-i-th welding ribbon processing component move toward the middle of the base or separate toward both sides.

11. The device for preparing a welding strip according to claim 9, wherein: Among the M separation driving components, the (i+1)th separation driving component drives the corresponding two welding ribbon processing components to separate to both sides before the (i)th separation driving component.

12. The welding strip preparation device according to claim 1, characterized in that: The solder strip supply unit includes a solder strip unloading mechanism, a first pressing mechanism, a second pressing mechanism, and a cutting mechanism sequentially arranged along the first horizontal direction, wherein: The N soldering ribbons released by the soldering ribbon unloading mechanism sequentially pass through the first pressing mechanism, the second pressing mechanism and the cutting mechanism; The first clamping mechanism is configured to be able to clamp one of all odd-numbered welding ribbons and all even-numbered welding ribbons among the N welding ribbons, and to translate along the first horizontal direction to adjust the position of the free end of the clamped welding ribbon; The welding ribbon pulling mechanism is configured to clamp the free ends of N welding ribbons from the cutting mechanism and pull the N welding ribbons onto the welding ribbon processing portion; The solder ribbon processing portion is configured to cut off one of all odd-numbered solder ribbons and all even-numbered solder ribbons among the N solder ribbons, the cutting mechanism is configured to cut off the other of all odd-numbered solder ribbons and all even-numbered solder ribbons among the N solder ribbons, and the first pressing mechanism and the second pressing mechanism are configured to clamp the N solder ribbons when the solder ribbons are cut.

13. The welding strip preparation device according to claim 12, characterized in that: The first pressing mechanism includes a first translation drive assembly, a second mounting bracket, a second pressure plate, and a first pressing assembly, wherein: The second mounting bracket is connected to the movable component of the first translation drive assembly, and the first translation drive assembly is used to drive the second mounting bracket to translate along the first horizontal direction; The second pressure-bearing plate is horizontally arranged on the second mounting bracket; The first pressing assembly includes a plurality of first pressing members arranged along the second horizontal direction; The first pressing assembly is used to press one of all odd-numbered welding strips and all even-numbered welding strips onto the second pressure plate, and each of the first pressing members is used to press one welding strip.

14. The welding strip preparation device according to claim 12, wherein: The second pressing mechanism includes a third mounting bracket, a third pressure-bearing plate, and a second pressing assembly, wherein: The third pressure bearing plate is horizontally arranged on the third mounting bracket; The second pressing assembly includes a plurality of second pressing members arranged along the second horizontal direction; The second pressing assembly is used to press the other of all odd-numbered welding strips and all even-numbered welding strips onto the third pressure plate, and each of the second pressing members is used to press one welding strip.

15. The welding strip preparation device according to claim 14, characterized in that: The cutting mechanism is slidably connected to the third mounting bracket; The third mounting bracket is further provided with a second translation drive assembly, and the cutting mechanism is transmission-connected to the second translation drive assembly; After the cutting mechanism cuts the solder ribbon, the second translation drive assembly is used to drive the cutting mechanism to move away from the solder ribbon processing portion so that a new free end of the cut solder ribbon extends out of the cutting mechanism.

16. The welding strip preparation device according to claim 12, wherein: The solder ribbon supply portion further includes a guide mechanism disposed between the solder ribbon unloading mechanism and the first pressing mechanism, and the guide mechanism is used to guide the N solder ribbons toward the first pressing mechanism.

17. The welding strip preparation device according to claim 1, characterized in that: The welding ribbon pulling mechanism includes a moving module, a fourth mounting bracket, a fixed clamping plate, a driving assembly and N+1 clamping claws, wherein: The fourth mounting bracket is connected to the movable component of the movable module, and the movable module is used to drive the fourth mounting bracket to translate in the first horizontal direction and to rise and fall in the vertical direction; The fixing clamp is fixedly connected to the fourth mounting bracket; N+1 of the clamping jaws are arranged on the fourth mounting bracket along the second horizontal direction and are all transmission-connected to the driving end of the driving assembly; The driving assembly is used to drive the N+1 clamping jaws to rotate toward or away from the fixed clamping plate, so that each of the clamping jaws can press a welding ribbon onto the fixed clamping plate.

18. A string welding machine, characterized in that: The stringer comprises the solder ribbon preparation device according to any one of claims 1 to 17, a cell loading mechanism, a solder ribbon conveying mechanism, a welding conveying mechanism, and a welding mechanism, wherein: The cell loading mechanism is used to pick up a number of IBC cells and transport the picked-up cells to the welding conveying mechanism; The solder ribbon transport mechanism is configured to pick up the solder ribbon group prepared by the solder ribbon preparation device, transport the solder ribbon group to the welding conveyor mechanism, and stack the solder ribbon group and the battery cells according to a predetermined rule to form the first type of battery string or the second type of battery string; The welding conveying mechanism conveys the stacked first battery string or the second battery string to a welding station; The welding mechanism is disposed at the welding station, and is configured to weld the stacked first type battery strings or the second type battery strings into a battery string.

Images