Series welding machine

Abstract

The utility model relates to a series welding machine which comprises a battery piece feeding mechanism, a welding strip feeding mechanism, a welding strip processing mechanism, a welding strip carrying mechanism, a welding conveying mechanism and a welding mechanism. The solder strip feeding mechanism selectively supplies the solder strips on the first to the 2n material coils or the second to the (2n + 1) material coils to the solder strip processing mechanism; the welding strip processing mechanism is used for slitting 2n welding strips to form a plurality of welding strip groups; the welding strip carrying mechanism picks up a plurality of welding strip sets and carries the welding strip sets to the welding conveying mechanism. The welding conveying mechanism conveys the stacked first type of battery strings or the stacked second type of battery strings to a welding station; and the welding mechanism is used for welding the stacked first battery string or second battery string into a battery string. According to the series welding machine, the welding strip feeding mechanism capable of bearing 2n + 1 welding strip material coils is arranged, and the welding strip processing mechanism capable of selectively processing 2n welding strips is correspondingly arranged, so that two kinds of battery strings can be selectively produced on one series welding machine, and the production cost and the maintenance cost are saved.

Description

Technical Field

[0001] The present application relates to the field of solar cell production, and in particular to a string welding machine. Background Art

[0002] An interdigitated back contact (IBC) cell is a cell that has only the busbars printed on the back of the cell. When connecting IBC cells in series, it is only necessary to use solder strips to connect the busbars on the back of adjacent IBC cells.

[0003] like Figure 1 As shown, when the welding ribbon groups protruding from both ends of the battery string are welding ribbon groups electrically connected to the odd-numbered grid lines of the battery cell 100, the battery string is a first type of battery string 110 (A string); when the welding ribbon groups protruding from both ends of the battery string are welding ribbon groups electrically connected to the even-numbered grid lines of the battery cell 100, the battery string is a second type of battery string 120 (B string). Figure 2 As shown, when the battery strings are laid on the backplane to form a battery string group, the first type of battery strings 110 (A strings) and the second type of battery strings 120 (B strings) need to be arranged alternately to ensure normal connectivity of the circuit.

[0004] Since the arrangement of the welding ribbon groups on the A string and the B string is different, in the prior art, two string welding machines are generally used to produce the A string and the B string respectively, and then sequentially transport them to the stacking machine for the production of photovoltaic modules. This production method leads to higher production costs and maintenance costs for photovoltaic modules. Utility Model Content

[0005] In view of the problem that the existing string welding machine can only produce one kind of battery string, the present application provides a string welding machine which can selectively produce two kinds of battery strings.

[0006] The technical solution of the present application is as follows: a string welding machine can be used to produce a first battery string and a second battery string, the first 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 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 first welding ribbon group, the second welding ribbon group, the third welding ribbon group, and the fourth welding ribbon group all include n columns of welding ribbons, each column of welding ribbons is formed by m welding ribbon segments arranged at intervals, and the welding ribbon segment located in the middle part of each column of welding ribbons is used to realize the electrical connection between two adjacent battery cells, and both ends of the first welding ribbon group protrude from the battery cells at the end of the first battery string, and both ends of the fourth welding ribbon group protrude from the battery cells at the end of the second battery string;

[0007] The string welding machine includes a battery cell feeding mechanism, a welding strip feeding mechanism, a welding strip processing mechanism, a welding strip conveying mechanism, a welding conveying mechanism and a welding mechanism; wherein:

[0008] 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;

[0009] The solder strip feeding mechanism includes 2n+1 coil seats for carrying solder strip coils;

[0010] When producing the first type of battery string, the welding ribbon feeding mechanism is configured to supply welding ribbons on the 1st to 2nth material rolls to the welding ribbon processing mechanism, and the welding ribbon processing mechanism is configured to cut 2n welding ribbons to form a plurality of welding ribbon groups, and separate the plurality of welding ribbon groups into a first welding ribbon group and a second welding ribbon group that are alternately arranged;

[0011] When producing the second type of battery string, the welding ribbon feeding mechanism is configured to supply the welding ribbons on the 2nd to 2n+1th material rolls to the welding ribbon processing mechanism, and the welding ribbon processing mechanism is configured to cut 2n welding ribbons to form a plurality of welding ribbon groups, and separate the plurality of welding ribbon groups into a third welding ribbon group and a fourth welding ribbon group that are alternately arranged;

[0012] The welding ribbon conveying mechanism is configured to pick up the plurality of welding ribbon groups formed by the welding ribbon processing mechanism, convey the plurality of welding ribbon groups to the welding conveying mechanism, and stack the plurality of welding ribbon groups and the battery cells according to a predetermined rule to form a first battery string or a second battery string;

[0013] The welding conveying mechanism conveys the stacked first type battery string or the second type battery string to the welding station;

[0014] The welding mechanism is disposed at the welding station, and is configured to weld the stacked first type battery strings or second type battery strings into a battery string.

[0015] By configuring a solder ribbon feeding mechanism that can carry 2n+1 solder ribbon rolls, and correspondingly configuring a solder ribbon processing mechanism that can selectively process 2n of the solder ribbons, the present application can realize the selective production of two types of battery strings on a single string welding machine, without changing the original production process or adding additional steps, thereby saving the production cost and maintenance cost of producing photovoltaic modules containing the two types of battery strings.

[0016] Optionally, the welding strip processing mechanism includes a plurality of first welding strip clamping assemblies, a plurality of second welding strip clamping assemblies, a plurality of first welding strip slitting assemblies, a plurality of second welding strip slitting assemblies and welding strip spacing assemblies arranged along a first horizontal direction, wherein:

[0017] A plurality of first solder strip clamping assemblies are configured to cooperate with the first solder strip group or the fourth solder strip group supplied by the solder strip feeding mechanism, each first solder strip slitting assembly is located between two adjacent first solder strip clamping assemblies, and the plurality of first solder strip slitting assemblies cooperate to slit each solder strip in the first solder strip group or the fourth solder strip group into a plurality of solder strip segments along a first horizontal direction, and each first solder strip clamping assembly clamps a row of n solder strip segments arranged along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;

[0018] A plurality of second solder strip clamping assemblies are configured to cooperate with the second solder strip group or the third solder strip group supplied by the solder strip feeding mechanism, each second solder strip slitting assembly is located between two adjacent second solder strip clamping assemblies, and the plurality of second solder strip slitting assemblies cooperate to slit each solder strip in the second solder strip group or the third solder strip group into a plurality of solder strip segments along a first horizontal direction, and each second solder strip clamping assembly clamps a row of n solder strip segments arranged along a second horizontal direction;

[0019] The solder strip spacing assembly is configured to drive each of the first solder strip clamping assembly and the second solder strip clamping assembly to move individually along the first horizontal direction to adjust the spacing between the several solder strip segments clamped by two adjacent first solder strip clamping assemblies and the spacing between the several solder strip segments clamped by two adjacent second solder strip clamping assemblies to match the cell spacing of the battery cell group.

[0020] Through the cooperation of a plurality of first solder strip clamping assemblies, a plurality of second solder strip clamping assemblies, a plurality of first solder strip cutting assemblies, and a plurality of second solder strip cutting assemblies, the solder strip processing mechanism realizes the cutting of a plurality of solder strips to obtain a plurality of solder strip groups, and realizes the separation processing of the solder strip groups. That is, the solder strip processing mechanism realizes the supply of a plurality of solder strip groups arranged in a staggered manner.

[0021] Optionally, the first welding strip clamping assembly and the second welding strip clamping assembly have the same structure, and each first welding strip clamping assembly includes a first clamping portion and a second clamping portion, the first clamping portion is used to clamp the head of a row of multiple welding strip segments arranged along the second horizontal direction, and the second clamping portion is used to clamp the tail of a row of multiple welding strip segments arranged along the second horizontal direction;

[0022] The first clamping part includes 2n+1 first clamping members arranged along the second horizontal direction, and the second clamping part includes 2n+1 second clamping members arranged along the second horizontal direction, and the first clamping members and the second clamping members are used to cooperate and clamp the head and tail of a welding strip segment;

[0023] When producing the first battery string, the 1st to 2nth first clamping members of the first clamping portion respectively clamp the 1st to 2nth welding strips supplied by the welding strip feeding mechanism, and the 1st to 2nth second clamping members of the second clamping portion respectively clamp the 1st to 2nth welding strips supplied by the welding strip feeding mechanism;

[0024] When producing the second type of battery string, the 2nd to 2n+1st first clamping members of the first clamping part respectively clamp the 2nd to 2n+1st solder strips supplied by the solder strip feeding mechanism, and the 2nd to 2n+1st second clamping members of the second clamping part respectively clamp the 2nd to 2n+1st solder strips supplied by the solder strip feeding mechanism.

[0025] By setting the first welding strip clamping assembly and the second welding strip clamping assembly, after the welding strip is cut in sections, the head and tail of each first welding strip group are clamped in the corresponding first clamping part and the second clamping part respectively to prevent the head and tail of the first welding strip group from falling. Similarly, the head and tail of each second welding strip group are clamped in the corresponding first clamping part and the second clamping part respectively.

[0026] Optionally, the first clamping portion and the second clamping portion have the same structure, and the first clamping portion includes a first mounting seat, a fixed clamping plate, a movable clamping plate, and a movable clamping plate driving member, wherein:

[0027] The fixed clamping plate is fixedly mounted on the first mounting seat and placed along the second horizontal direction, and the top end of the fixed clamping plate forms a horizontal pressure-bearing surface;

[0028] The movable clamping plate is slidably connected to the fixed clamping plate, and 2n+1 first clamping members are arranged at intervals along the second horizontal direction on the top of the movable clamping plate, and the first clamping members are located above the pressure-bearing surface;

[0029] The movable splint driving member is disposed on the first mounting seat and is in driving connection with the movable splint, and the movable splint driving member is configured to drive the movable splint to slide relative to the fixed splint, so as to realize the position switching of the movable splint between the high position and the low position;

[0030] When the movable clamp slides to the high position, a gap is formed between each first clamp and the pressure surface for the welding strip to pass vertically; when the movable clamp slides to the low position, each first clamp presses a corresponding welding strip onto the pressure surface.

[0031] The welding strip is clamped by pressing it downward onto the pressure-bearing surface of the fixed clamping plate through the first clamping member, which can ensure stable clamping of various welding strips such as round welding strips and flat welding strips, and prevent the welding strip from turning over due to uneven force.

[0032] Optionally, the first clamping portion further includes a first connecting column, a first guide hole is provided on the movable clamping plate, a first end of the first connecting column is fixedly connected to the fixed clamping plate, and a second end of the first connecting column is snugly inserted into the first guide hole;

[0033] A first guide path is formed in the first guide hole from top to bottom, and the first guide path includes a first lifting section and a first offset section that are connected. The first lifting section is arranged in a vertical direction, and the first offset section is arc-shaped. The first clamping piece on the movable clamp presses the welding strip onto the pressure surface according to the first guide path of the first guide hole.

[0034] The movable splint is slidably connected to the fixed splint by using the first connecting column and the first guide hole. When the movable splint is driven by the movable splint driving member, the movable splint slides relative to the fixed splint. When the movable splint slides upward, each clamping block moves to a high position, so that the welding strip is inserted between the first clamping member and the bearing surface. When the movable splint slides downward, each clamping block presses the corresponding welding strip onto the bearing surface. In particular, by configuring the first guide hole to include a first lifting section arranged in the vertical direction and a first arc-shaped offset section, the first clamping member can slowly press the welding strip onto the bearing surface, thereby preventing the first clamping member from instantly and quickly pressing down the rolled flat welding strip.

[0035] Optionally, the first welding ribbon slitting assembly and the second welding ribbon slitting assembly have the same structure, and the first welding ribbon slitting assembly includes a second mounting seat, a fixed cutting knife, a movable knife seat and a movable knife seat driving member, wherein:

[0036] The fixed cutter is fixedly arranged on the second mounting seat and extends along a second horizontal direction perpendicular to the first horizontal direction, and a fixed cutting blade is formed at the upper edge of the fixed cutter;

[0037] The movable knife seat is slidably connected to the fixed cutting knife. 2n+1 hook knives are arranged on the movable knife seat at intervals along the second horizontal direction. The hook knives are located above the fixed cutting blade, and a movable cutting blade is formed at the lower edge of the hook knives.

[0038] The movable knife seat driving member is configured to drive the movable knife seat to slide relative to the fixed cutter to achieve position switching of the movable knife seat between a high position and a low position;

[0039] When the movable knife seat slides to a high position, gaps are formed between the movable cutting blades of the 2n+1 hook knives and the fixed cutting blade of the fixed cutter for the welding strip to pass through; when the movable knife seat slides to a low position, the movable cutting blades of the 2n+1 hook knives cooperate with the fixed cutting blade of the fixed cutter to cut off the welding strip passing between the two.

[0040] When the first welding strip cutting assembly is used to cut all the odd-numbered welding strips, the even-numbered welding strips that do not need to be cut can be avoided. Similarly, when the second welding strip cutting assembly is used to cut all the even-numbered welding strips, the odd-numbered welding strips that do not need to be cut can be avoided. In addition, the hook knife can cut both round welding strips and flat welding strips, which increases the compatibility of the first welding strip cutting assembly and the second welding strip cutting assembly.

[0041] Optionally, the first welding ribbon slitting assembly further includes a second connecting column, a second guide hole is provided on the movable knife seat, a first end of the second connecting column is connected to the fixed cutter, and a second end of the second connecting column is inserted into the second guide hole;

[0042] A second guide path is formed in the second guide hole from top to bottom, and the second guide path includes a connected second lifting section and a second offset section. The second lifting section is arranged in the vertical direction, and the second offset section is arc-shaped. The movable cutting blade of the hook knife cuts the welding strip according to the second guide path of the second guide hole.

[0043] The movable knife seat is slidably connected to the fixed cutter by using a second connecting column and a second guide hole. When the movable knife seat driving member drives the movable knife seat, the movable knife seat slides relative to the fixed cutter. When the movable knife seat slides upward, each hook knife moves to a high position, so that the welding strip is inserted between the movable cutting blade of each hook knife and the fixed cutting blade of the fixed cutter. When the movable knife seat slides downward, each hook knife cuts the corresponding welding strip. In particular, by configuring the second guide hole to include a second lifting section arranged in the vertical direction and a second arc-shaped offset section, the hook knife can implement a slow cutting of the welding strip, preventing the hook knife from instantly and quickly pressing down the rolled flat welding strip.

[0044] Optionally, the solder strip processing mechanism includes a base, a plurality of solder strip processing components and a spacing drive component, wherein:

[0045] A plurality of welding strip processing components are arranged on the base along the first horizontal direction; the plurality of welding strip processing components are configured to guide the welding strips corresponding to the first welding strip group or the fourth welding strip group supplied by the welding strip feeding mechanism, clamp the remaining welding strips at the same time, and cut each welding strip in the first welding strip group or the fourth welding strip group into a plurality of welding strip segments along the first horizontal direction to obtain a plurality of first welding strip groups or fourth welding strip groups; the plurality of welding strip processing components are also configured to guide the welding strips corresponding to the second welding strip group or the third welding strip group supplied by the welding strip feeding mechanism, clamp the remaining welding strips at the same time, and cut each welding strip in the second welding strip group or the third welding strip group into a plurality of welding strip segments along the first horizontal direction to obtain a plurality of second welding strip groups or third welding strip groups;

[0046] The spacing drive component is arranged on the base, and the spacing drive component is configured to drive a plurality of welding strip processing components to separate to both sides relative to the middle position of the base in the first horizontal direction, so as to adjust the first welding strip group and the second welding strip group along the first horizontal direction, or adjust the fourth welding strip group and the third welding strip group.

[0047] Through the cooperation of the welding strip processing component and the spacing driving component, multiple welding strips are staggered and cut into the first welding strip group and the second welding strip group or the fourth welding strip group and the third welding strip group, and the first welding strip group and the second welding strip group or the fourth welding strip group and the third welding strip group are adjusted along the extension direction of the welding strip to meet the arrangement requirements between the first welding strip group and the second welding strip group or the fourth welding strip group and the third welding strip group in the battery string. In this way, the subsequent welding strip handling mechanism can lay all the staggered and well-adjusted welding strip groups on the arranged IBC battery cells at one time, thereby greatly improving the production efficiency of the IBC battery string.

[0048] Optionally, the solder strip processing mechanism includes 2r solder strip processing components, the 2r solder strip processing components are all slidably connected to the base, and the spacing drive component includes r spacing drive members, wherein: the jth spacing drive member is used to drive the jth solder strip processing component and the 2r+1-j solder strip processing components to move toward the middle of the base or separate to both sides; or, the solder strip processing mechanism includes 2r+1 solder strip processing components, the r+1th solder strip processing component is fixedly connected to the base, and the remaining 2r solder strip processing components are all slidably connected to the base, and the spacing drive component includes r spacing drive members, wherein: the jth spacing drive member is used to drive the jth solder strip processing component and the 2r+2-j solder strip processing components to move toward the middle of the base or separate to both sides; wherein, 1≤j≤r.

[0049] By configuring the spacing drive assembly to include r spacing drive components, the spacing drive assembly can independently drive each pair of welding strip processing assemblies to move in the opposite direction, and ultimately the 2r welding strip processing assemblies or 2r+1 welding strip processing assemblies are quickly separated to both sides or moved toward the middle of the base to complete the spacing adjustment of the first welding strip group and the second welding strip group.

[0050] Optionally, 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 jth welding strip processing component is fixedly connected to the first side belt body of the synchronous belt, and the 2r+1-jth welding strip processing component or the 2r+2-jth welding strip 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 jth welding strip processing component and the 2r+1-jth welding strip processing component or the 2r+2-jth welding strip processing component to separate to both sides or move closer to the middle of the base.

[0051] A separation drive component with a simple structure and stable driving is provided, which only needs to be provided with one drive component to drive two corresponding welding strip processing components to move in opposite directions at the same speed, so as to separate to both sides or move closer to the middle of the base.

[0052] Optionally, among the r spacing driving components, the j+1th spacing driving component drives the corresponding two welding strip processing components to separate to both sides before the jth spacing driving component.

[0053] Among all the solder strip processing components, the pair of solder strip processing components that are farther from the middle of the base are separated to both sides first. In this way, on the one hand, it can prevent the two adjacent pairs of solder strip processing components from being damaged by collision, and on the other hand, it can prevent the ends of the solder strip group that has just been cut and has not yet been separated from each other from being deformed by collision.

[0054] Optionally, a guide rail extending along the first horizontal direction is further provided on the base, and a plurality of welding strip processing components are slidably connected to the guide rail via a slider.

[0055] By arranging a guide rail extending along the first horizontal direction on the base, sliding guidance of the solder strip processing assembly is achieved, thereby preventing the solder strip processing assembly from going off track and causing the solder strip to shift in position.

[0056] Optionally, the solder strip processing assembly includes: a mounting bracket mounted on a base; two clamping portions arranged in pairs on the mounting bracket, the two clamping portions being used to clamp one of all odd-numbered solder strips and all even-numbered solder strips from two different positions, and to guide the other of all odd-numbered solder strips and all second even-numbered solder strips from two different positions; a cutting portion arranged on the 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.

[0057] The weld ribbon processing assembly is arranged so that the weld ribbon processing assembly can clamp all odd-numbered weld ribbons and one of all even-numbered weld ribbons from two different positions, guide all odd-numbered weld ribbons and the other of all second even-numbered weld ribbons from two different positions, and cut off all guided weld ribbons.

[0058] Optionally, the clamping part includes a pressure plate, a pressure plate and a pressure plate driving unit, wherein: the pressure plate can be levitation mounted on the mounting bracket and is in driving connection with the pressure plate driving unit arranged on the mounting bracket, a plurality of pressure heads are arranged at the top end of the pressure plate along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; the pressure plate is fixedly mounted on the mounting bracket and extends along the second horizontal direction, a horizontal pressure surface is formed at the top end of the pressure plate, and ejectors corresponding to all odd-numbered pressure heads or all even-numbered pressure heads among the plurality of pressure heads are arranged on the pressure surface, and the ejectors extend upwardly from the pressure surface; the pressure plate driving unit The unit is used to drive the pressure plate to slide up and down relative to the pressure plate. When the pressure plate slides downward to a low position, all odd-numbered pressure heads among the multiple pressure heads clamp all odd-numbered welding strips among the multiple welding strips onto the ejector pins one by one, and all even-numbered pressure heads among the multiple pressure heads guide all even-numbered welding strips among the multiple welding strips one by one, or all even-numbered pressure heads among the multiple pressure heads clamp all even-numbered welding strips among the multiple welding strips onto the ejector pins one by one, and all odd-numbered pressure heads among the multiple pressure heads guide all odd-numbered welding strips among the multiple welding strips one by one.

[0059] The clamping part is arranged so that when the clamping part clamps one of all odd-order welding strips and all even-order welding strips among the multiple welding strips, the other one of all odd-order welding strips and all even-order welding strips among the multiple welding strips can be guided.

[0060] Optionally, the clamping portion further includes a guide comb arranged on the inner side of the pressure plate, and a plurality of guide grooves corresponding to the pressure heads are arranged on the guide comb at intervals along the second horizontal direction, and each guide groove is used to guide one of the multiple welding strips.

[0061] By setting the guide comb, the welding strip is guided to ensure that each welding strip passes under the corresponding pressure head.

[0062] Optionally, the cutting portion includes a fixed cutter, a movable cutter and a cutter driving unit, wherein: the fixed cutter is fixedly arranged on the mounting bracket and extends along the second horizontal direction, and a fixed blade is formed at the upper edge of the fixed cutter; the movable cutter can be lifted and lowered on the mounting bracket, and is transmission connected to the cutter driving unit arranged on the mounting bracket, and a plurality of hook knives are arranged side by side along the second horizontal direction on the movable cutter, the hook knives extend upward from the upper edge of the movable cutter, and a movable blade is formed at the lower edge of the hook knife; the cutter driving unit is used to drive the movable cutter to slide up and down, and when the movable cutter slides upward to a high position, a gap is formed between the movable blade of each hook knife and the fixed blade of the fixed cutter for an odd-numbered welding strip or an even-numbered welding strip to pass through, and when the movable cutter slides downward to a low position, each hook knife cooperates with the fixed cutter to cut off an odd-numbered welding strip or an even-numbered welding strip passing therebetween.

[0063] By setting the cutting part, when the cutting part cuts off one of all odd-numbered welding strips and all even-numbered welding strips among the plurality of welding strips, the other one can be avoided at the same time.

[0064] Optionally, the welding ribbon conveying mechanism includes a moving mechanism, a mounting bracket, a plurality of clamping units and a clamping unit driving mechanism, wherein:

[0065] The mounting bracket is connected to the driving end of the moving mechanism, the pressing unit driving mechanism is arranged on the mounting bracket, and the moving mechanism is configured to drive the mounting bracket to move;

[0066] A plurality of clamping units are sequentially arranged side by side on the mounting bracket along a first horizontal direction, and the clamping units are configured to clamp the two ends of the welding ribbon group up and down;

[0067] The pressing unit driving mechanism is configured to drive the pressing unit to move closer to or away from the end of the welding ribbon group.

[0068] The solder strip conveying mechanism of the present application has a clamping unit that clamps the solder strip group in an up-and-down clamping manner, so that the picked-up solder strip, especially the flat solder strip, will not flip over due to uneven force.

[0069] Optionally, the welding ribbon transport mechanism includes m+1 clamping units, the first clamping unit located at the head includes at least a first clamping portion, the m+1 clamping unit located at the tail includes at least a second clamping portion, and the other clamping units include a first clamping portion and a second clamping portion, wherein:

[0070] The first pressing part of the first pressing unit is configured to press the first end of the first welding ribbon group, and the second pressing part of the m+1th pressing unit is configured to press the second end of the mth welding ribbon group;

[0071] The second pressing part of the i-th pressing unit is configured to press the second end of the i-1-th welding ribbon group, and the first pressing part of the i-th pressing unit is configured to press the first end of the i-th welding ribbon group, wherein i is a natural number between 2 and m;

[0072] The clamping unit driving mechanism is configured to drive each first clamping part and each second clamping part to move in opposite directions along the first horizontal direction, so that the two ends of each welding tape group are respectively inserted into the corresponding first clamping part and the second clamping part, and to move away from the welding tape group after the welding tape conveying mechanism lays the welding tape group at a specified position, and / or tightens the welding tape group after the first clamping part and the second clamping part clamp the welding tape group.

[0073] By setting the number and structure of the welding ribbon conveying mechanism, the welding ribbon conveying mechanism can carry out the synchronous conveying of m staggered welding ribbon groups at one time, and can tighten the welding ribbon groups during the conveying process, so as to ensure that the welding ribbon groups can fall accurately to the designated position. If m is set to the number of welding ribbon groups required for a string of IBC battery strings, then one conveying can meet the welding ribbon laying requirements of a string of IBC battery strings.

[0074] Optionally, the first pressing part and the second pressing part have the same structure, and the first pressing part includes a connecting bracket, a fixed pressing plate, a movable pressing plate and a movable pressing plate driving member, wherein:

[0075] The connecting bracket is linked with the movable part of the pressing unit driving mechanism;

[0076] The fixed pressing plate is fixedly connected to the lower end of the connecting bracket, and 2n+1 bearing tongue plates are arranged side by side on the fixed pressing plate along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;

[0077] A support plate is extended upward from each of the two ends of the bearing tongue plate, and the two support plates are fixedly connected to the fixed pressing plate respectively;

[0078] The movable pressing plate is located above the fixed pressing plate, and 2n+1 pressing rods corresponding to the load-bearing tongue plates are arranged below the movable pressing plate. The pressing rods are elastically connected to the movable pressing plate through elastic members, and each pressing rod passes through the fixed pressing plate and is located above the load-bearing tongue plate. A gap between each pressing rod and the corresponding load-bearing tongue plate allows a welding strip to pass through.

[0079] The movable pressing plate driving member is installed on the connecting bracket and is in driving connection with the movable pressing plate, and the movable pressing plate driving member is configured to drive the movable pressing plate to move up and down relative to the fixed pressing plate;

[0080] When the movable pressing plate moves upward to a high position, each pressing rod moves away from the corresponding bearing tongue plate, and when the first pressing portion moves toward the corresponding welding strip group, the end of each welding strip of the welding strip group enters into the gap between the corresponding bearing tongue plate and the pressing rod;

[0081] When the movable pressing plate moves downward to a low position, each pressing rod presses the end of the welding strip tightly against the bearing tongue plate.

[0082] By setting the first clamping part and the second clamping part, it is achieved that when the first clamping part and the second clamping part move toward the corresponding welding strip group, the end of each welding strip in the welding strip group can enter into the first clamping part or the second clamping part, and be clamped up and down by the first clamping part or the second clamping part.

[0083] Optionally, the pressing unit driving mechanism includes a driving part, a first transmission part and a second transmission part, wherein:

[0084] The driving unit is mounted on the mounting bracket;

[0085] The first transmission part is connected to the first driving end of the driving part, and the first pressing part of each pressing unit is connected to the first transmission part;

[0086] The second transmission part is connected to the second driving end of the driving part, and the second pressing part of each pressing unit is connected to the second transmission part;

[0087] The driving part drives the first transmission part and the second transmission part to move in the opposite direction along the first horizontal direction, so as to drive each first pressing part and each second pressing part to move in the opposite direction along the first horizontal direction.

[0088] Each welding strip group is clamped by two adjacent clamping units, wherein one end of the welding strip group is clamped by the first clamping part of one clamping unit, and the other end of the welding strip group is clamped by the second clamping part of the other clamping unit. By setting the clamping unit driving mechanism, the clamping unit driving mechanism can drive the first clamping parts of all the clamping units and the second clamping parts of all the clamping units to translate in the opposite direction.

[0089] Optionally, the solder strip feeding mechanism further includes a solder strip pressing assembly, a solder strip cutting assembly and a solder strip pulling assembly sequentially arranged along the first horizontal direction, wherein:

[0090] 2n+1 material coil seats are located in the front process of the solder ribbon clamping assembly, and the 2n+1 material coil seats are configured to convey 2n+1 solder ribbons to the solder ribbon clamping assembly, and the solder ribbon clamping assembly is configured to individually clamp or release each solder ribbon conveyed by the material coil seats;

[0091] The welding strip pulling assembly comprises 2n+1 clamps, each clamp is individually controlled by a driving member to clamp or release a welding strip, the welding strip pulling assembly is configured to pass through the welding strip cutting assembly along a first horizontal direction and clamp the first to 2n welding strips or the second to 2n+1 welding strips from the welding strip pressing assembly, the welding strip pressing assembly is configured to release the 2n welding strips clamped by the welding strip pulling assembly, and the welding strip pulling assembly is further configured to pull the clamped 2n welding strips along the first horizontal direction to a predetermined length and pass through the welding strip cutting assembly;

[0092] The solder ribbon pressing assembly is further configured to press the 2n solder ribbons pulled out by the solder ribbon pulling assembly, the solder ribbon cutting assembly is further configured to cut the 2n solder ribbons, and the solder ribbon pulling assembly is further configured to supply the cut 2n solder ribbons to the solder ribbon processing mechanism.

[0093] The soldering tape is fed by the material coil seat, and the soldering tape on the soldering tape material coil can be pulled out along the first horizontal direction by the traction of the soldering tape traction assembly. The pulled-out soldering tape is pressed by the soldering tape clamping assembly, so that the soldering tape can be prevented from deviating after the soldering tape traction assembly releases the soldering tape. At the same time, it is also convenient for the soldering tape traction assembly to clamp the soldering tape from the soldering tape clamping assembly again and pull out the soldering tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 A schematic diagram of the structure of a first type of battery string and a second type of battery string that can be produced in this application;

[0095] Figure 2 for Figure 1 A schematic diagram of the structure of a battery string group formed by arranging two types of battery strings shown;

[0096] Figure 3 This is a schematic diagram of a three-dimensional structure of an optional embodiment of the present application;

[0097] Figure 4 It is a structural schematic diagram of the welding strip feeding mechanism in this application;

[0098] Figure 5 It is a structural schematic diagram of the first embodiment of the welding strip processing mechanism in the present application;

[0099] Figure 6 This is a schematic diagram of the first welding strip clamping assembly and the second welding strip clamping assembly in the present application clamping the welding strip;

[0100] Figure 7 It is a schematic diagram of assembling a first welding ribbon clamping assembly and a corresponding first welding ribbon cutting assembly in the present application;

[0101] Figure 8 It is a structural schematic diagram of the first clamping part in this application;

[0102] Fig. 9 for Figure 8 A partial enlarged view of the A area;

[0103] Fig.10 It is a structural schematic diagram of the first welding ribbon cutting assembly in this application;

[0104] Fig.11 It is a structural schematic diagram of a second embodiment of the welding strip processing mechanism in the present application;

[0105] Fig.12 for Fig.11 Schematic diagram of the three-dimensional structure from another perspective;

[0106] Fig.13 for Fig.11 A schematic diagram of the structure at one viewing angle after eliminating several solder strip processing components;

[0107] Fig.14 for Fig.11 A schematic diagram of the structure of the spacing drive member in FIG.

[0108] Fig.15 for Fig.11A schematic diagram of the three-dimensional structure of the solder strip processing component at a viewing angle;

[0109] Fig.16 for Fig.11 A schematic diagram of the three-dimensional structure of the solder strip processing component in another perspective;

[0110] Fig.17 for Fig.11 A schematic diagram of a top view of the structure of the solder strip processing assembly;

[0111] Fig.18 for Fig.11 A schematic diagram of the top view of the solder strip processing assembly after omitting one side of the pressure plate;

[0112] Fig.19 for Fig.11 A schematic diagram of the structure of the cutting part;

[0113] Fig. 20 It is a structural schematic diagram of the welding ribbon conveying mechanism in this application;

[0114] Fig.21 It is a schematic diagram of the assembly structure of the pressing unit driving mechanism and the pressing unit in this application;

[0115] Fig. 22 for Fig.21 A partial enlarged view of

[0116] Fig.23 It is a structural schematic diagram of the compression unit in this application at one viewing angle;

[0117] Fig.24 It is a structural schematic diagram of the compression unit in this application from another perspective;

[0118] Fig.25 is a structural schematic diagram of the compression unit in the present application from another viewing angle;

[0119] Fig.26 This is a schematic diagram of the clamping unit of the present application clamping the welding strip group.

[0120] Figures 1 to 26 Included:

[0121] Stringer 1;

[0122] The welding ribbon conveying mechanism 10, the mounting bracket 11, the clamping unit 12, the first clamping part 13, the connecting bracket 131, the fixed clamping plate 132, the movable clamping plate 133, the movable clamping plate driving member 134, the pressure tongue plate 135, the pressure rod 136, the second clamping part 14, the first mounting seat 16, the guide rail 17, the clamping unit driving machine 15, the driving part 151, the first transmission part 152, and the second transmission part 153;

[0123] The welding strip processing mechanism 20, the first welding strip clamping assembly 21, the first clamping part 23, the first mounting seat 231, the fixed clamping plate 232, the movable clamping plate 233, the movable clamping plate driving member 234, the first connecting column 235, the first guide hole 236, the first clamping member 237, the elastic pressure bearing member 238, the first lifting section 2361, the first offset section 2362, the second clamping part 24, the second welding strip clamping assembly 25, the first welding strip cutting assembly 26, the second mounting seat 261, the fixed cutting knife 262, the movable knife seat 263, the movable knife seat driving member 264, the second connecting column 265, the second guide hole 266, the hook knife 267, the second welding strip cutting assembly 27, the welding strip spacing assembly 28, the first slide rail 281, the first driving part 282, the second slide rail 283, and the second driving part 284;

[0124] Welding conveying mechanism 30;

[0125] Battery cell feeding mechanism 40;

[0126] A solder strip feeding mechanism 50, a solder strip pressing assembly 51, a solder strip cutting assembly 52, and a solder strip pulling assembly 53;

[0127] Base 61, guide rail 611;

[0128] The welding strip processing assembly 62, the mounting bracket 621, the clamping part 622, the pressure plate 6221, the pressure plate 6222, the pressure plate driving unit 6223, the pressure head 6224, the ejector pin 6225, the guide comb 6226, the guide groove 6227, the cutting part 623, the fixed cutter 6231, the movable cutter 6232, the cutter driving unit 6233, and the hook cutter 6234;

[0129] The separation driving member 63, the driving wheel 631, the driven wheel 632, the synchronous belt 633, the driving member 634;

[0130] Welding ribbon 100, battery cell 101;

[0131] A first battery string 110, a first welding ribbon group 111, and a second welding ribbon group 112;

[0132] The second battery string 120 , the third welding ribbon group 121 , and the fourth welding ribbon group 122 . DETAILED DESCRIPTION

[0133] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0134] like Figure 3 As shown, the present application is a string welding machine 1, which can be used to produce Figure 1 , Figure 2A first type of battery string 110 and a second type of battery string 120 are shown. Figure 3 The X-axis direction is the first horizontal direction, the Y-axis direction is the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0135] like Figure 1 , Figure 2 As shown, the first type of battery string 110 includes a plurality of battery cells 101, a first welding ribbon group 111 covering the odd-numbered grid lines of the battery cells 101, and a second welding ribbon group 112 covering the even-numbered grid lines of the battery cells 101; the second type of battery string 120 includes a plurality of battery cells 101, a third welding ribbon group 121 covering the odd-numbered grid lines of the battery cells 101, and a fourth welding ribbon group 122 covering the even-numbered grid lines of the battery cells 101, and the battery cells 101 are IBC battery cells.

[0136] The first welding ribbon group 111, the second welding ribbon group 112, the third welding ribbon group 121 and the fourth welding ribbon group 122 each include n rows of welding ribbons ( Figure 1 , Figure 2 In the example, n=10), each column of welding strips is formed by m welding strip segments arranged at intervals, and the welding strip segments in the middle of each column of welding strips are used to realize the electrical connection between two adjacent battery cells 101. Both ends of the first welding strip group 111 protrude from the battery cells 101 at the ends of the first battery string 110, and both ends of the fourth welding strip group 122 protrude from the battery cells 101 at the ends of the second battery string 120.

[0137] See also Figure 3 The stringer 1 includes a cell loading mechanism 40, a solder strip feeding mechanism 50, a solder strip processing mechanism 20, a solder strip conveying mechanism 10, a soldering conveying mechanism 30 and a soldering mechanism.

[0138] Wherein: the battery cell feeding mechanism 40 is used to pick up a plurality of battery cells 101 and transport the picked-up battery cells 101 to the welding conveying mechanism 30;

[0139] The solder strip feeding mechanism 50 includes 2n+1 coil seats for carrying solder strip coils, each coil supplying one solder strip;

[0140] When producing the first type of battery string 110, the welding ribbon feeding mechanism 50 is configured to supply the welding ribbons on the 1st to 2nth material rolls to the welding ribbon processing mechanism 20, and the welding ribbon processing mechanism 20 is configured to cut 2n welding ribbons to form a plurality of welding ribbon groups, and separate the plurality of welding ribbon groups into a first welding ribbon group 111 and a second welding ribbon group 112 that are alternately arranged;

[0141] When producing the second type of battery string 120, the welding ribbon feeding mechanism 50 is configured to supply the welding ribbons on the 2nd to 2n+1th material rolls to the welding ribbon processing mechanism 20, and the welding ribbon processing mechanism 20 is configured to cut 2n welding ribbons to form a plurality of welding ribbon groups, and separate the plurality of welding ribbon groups into a third welding ribbon group 121 and a fourth welding ribbon group 122 that are alternately arranged;

[0142] The welding ribbon conveying mechanism 10 is configured to pick up the multiple welding ribbon groups formed by the welding ribbon processing mechanism 20, convey the multiple welding ribbon groups to the welding conveying mechanism 30, and stack the multiple welding ribbon groups and the battery cells 101 according to a predetermined rule to form a first battery string 110 or a second battery string 120;

[0143] The welding conveying mechanism 30 conveys the stacked first type battery string 110 or the second type battery string 120 to the welding station;

[0144] The welding mechanism is disposed at the welding station, and is configured to weld the stacked first type battery strings 110 or the second type battery strings 120 into a battery string.

[0145] By configuring a solder ribbon feeding mechanism 50 that can carry 2n+1 solder ribbon rolls, and correspondingly configuring a solder ribbon processing mechanism 20 that can selectively process 2n solder ribbons therein, the present application can realize the selective production of two types of battery strings on a string welding machine 1, without changing the original production process or adding additional steps, thereby saving the production cost and maintenance cost of producing photovoltaic modules containing the two types of battery strings.

[0146] The various components of the string welding machine 1 are described in detail below.

[0147] like Figure 3 As shown, the cell loading mechanism 40, welding conveying mechanism 30 and welding mechanism in the present application can adopt any available structure in the prior art.

[0148] like Figure 4 As shown, as an optional embodiment, the solder tape feeding mechanism 50 also includes a solder tape clamping assembly 51, a solder tape cutting assembly 52 and a solder tape pulling assembly 53 which are sequentially arranged along a first horizontal direction (the X-axis direction in the figure).

[0149] Wherein: 2n+1 material coil seats (not shown in the figure) are located in the front process of the solder strip clamping assembly 51, and the 2n+1 material coil seats are configured to convey 2n+1 solder strips 100 to the solder strip clamping assembly 51, and the solder strip clamping assembly 51 is configured to individually clamp or loosen each solder strip 100 conveyed by the material coil seats;

[0150] The welding ribbon pulling assembly 53 includes 2n+1 clamps, each clamp is individually controlled by a driving member to clamp or loosen a welding ribbon 100, the welding ribbon pulling assembly 53 is configured to pass through the welding ribbon cutting assembly 52 along the first horizontal direction and clamp the 1st to 2n welding ribbons 100 or the 2nd to 2n+1 welding ribbons 100 from the welding ribbon pressing assembly 51, the welding ribbon pressing assembly 51 is configured to loosen the 2n welding ribbons 100 clamped by the welding ribbon pulling assembly 53, and the welding ribbon pulling assembly 53 is further configured to pull the clamped 2n welding ribbons 100 along the first horizontal direction to a predetermined length and pass through the welding ribbon cutting assembly 52;

[0151] The solder ribbon pressing assembly 51 is further configured to press the 2n solder ribbons 100 pulled out by the solder ribbon pulling assembly 53, the solder ribbon cutting assembly 52 is further configured to cut the 2n solder ribbons 100, and the solder ribbon pulling assembly 53 is further configured to supply the cut 2n solder ribbons 100 to the solder ribbon processing mechanism 20.

[0152] The soldering tape 100 is fed through the material roll holder, and the soldering tape 100 on the soldering tape material roll can be pulled out along the first horizontal direction through the traction of the soldering tape traction assembly 53. The pulled out soldering tape 100 is pressed by the soldering tape clamping assembly 51, so that the soldering tape 100 is prevented from deviating after the soldering tape traction assembly 53 releases the soldering tape 100. At the same time, it is also convenient for the soldering tape traction assembly 53 to clamp the soldering tape 100 from the soldering tape clamping assembly 51 again and pull out the soldering tape 100.

[0153] The solder ribbon pressing assembly 51 , the solder ribbon cutting assembly 52 and the solder ribbon pulling assembly 53 in this embodiment of the solder ribbon feeding mechanism 50 may adopt any available structure in the prior art.

[0154] like Figure 5 and Figure 6 As shown, as an optional embodiment, the first embodiment of the welding strip processing mechanism 20 includes a first horizontal direction (such as Figure 5 A plurality of first solder strip clamping assemblies 21, a plurality of second solder strip clamping assemblies 25, a plurality of first solder strip cutting assemblies 26, a plurality of second solder strip cutting assemblies 27 and a solder strip spacing assembly 28 are arranged in the X-axis direction.

[0155] Wherein: a plurality of first solder strip clamping assemblies 21 are configured to cooperate with the first solder strip group or the fourth solder strip group supplied by the solder strip feeding mechanism 50, each first solder strip slitting assembly 26 is located between two adjacent first solder strip clamping assemblies 21, and a plurality of first solder strip slitting assemblies 26 cooperate to slit each solder strip in the first solder strip group or the fourth solder strip group into a plurality of solder strip segments along the first horizontal direction, and each first solder strip clamping assembly 21 clamps a row of n solder strip segments arranged along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction;

[0156] A plurality of second solder strip clamping assemblies 25 are configured to cooperate with the second solder strip group or the third solder strip group supplied by the solder strip feeding mechanism 50, each second solder strip slitting assembly 27 is located between two adjacent second solder strip clamping assemblies 25, and a plurality of second solder strip slitting assemblies 27 cooperate to slit each solder strip in the second solder strip group or the third solder strip group into a plurality of solder strip segments along the first horizontal direction, and each second solder strip clamping assembly 25 clamps a row of n solder strip segments arranged along the second horizontal direction;

[0157] The solder strip spacing component 28 is configured to drive each of the first solder strip clamping components 21 and the second solder strip clamping components 25 to move individually along the first horizontal direction to adjust the spacing between the several solder strip segments clamped by two adjacent first solder strip clamping components 21 and the spacing between the several solder strip segments clamped by two adjacent second solder strip clamping components 25 to match the cell spacing of the battery cell group.

[0158] Through the cooperation of a plurality of first solder strip clamping assemblies 21, a plurality of second solder strip clamping assemblies 25, a plurality of first solder strip cutting assemblies 26, and a plurality of second solder strip cutting assemblies 27, the solder strip processing mechanism 20 realizes the cutting of a plurality of solder strips to obtain a plurality of solder strip groups, and realizes the separation processing of the solder strip groups. That is, the solder strip processing mechanism 20 realizes the supply of a plurality of staggered solder strip groups.

[0159] like Figure 5 , Figure 7 As shown, optionally, the first welding strip clamping assembly 21 and the second welding strip clamping assembly 25 have the same structure, and each first welding strip clamping assembly 21 includes a first clamping portion 23 and a second clamping portion 24, the first clamping portion 23 is used to clamp the head of a row of multiple welding strip segments arranged along the second horizontal direction, and the second clamping portion 24 is used to clamp the tail of a row of multiple welding strip segments arranged along the second horizontal direction;

[0160] The first clamping portion 23 includes 2n+1 first clamping members 237 arranged along the second horizontal direction, and the second clamping portion 24 includes 2n+1 second clamping members arranged along the second horizontal direction. The first clamping members 237 and the second clamping members are used to cooperate and clamp the head and tail of a welding strip segment.

[0161] When producing the first type of battery string 110, the 1st to 2nth first clamping members 237 of the first clamping portion 23 respectively clamp the 1st to 2nth welding strips supplied by the welding strip feeding mechanism 50, and the 1st to 2nth second clamping members of the second clamping portion 24 respectively clamp the 1st to 2nth welding strips supplied by the welding strip feeding mechanism 50;

[0162] When producing the second type of battery string 120, the 2nd to 2n+1th first clamping members 237 of the first clamping portion 23 respectively clamp the 2nd to 2n+1th solder strips supplied by the solder strip feeding mechanism 50, and the 2nd to 2n+1th second clamping members of the second clamping portion 24 respectively clamp the 2nd to 2n+1th solder strips supplied by the solder strip feeding mechanism 50.

[0163] By setting the first welding strip clamping assembly 21 and the second welding strip clamping assembly 25, it is achieved that after the welding strip is cut in sections, the head and tail of each first welding strip group or each fourth welding strip group are clamped in the corresponding first clamping part 23 and the second clamping part 24 respectively to prevent the head and tail of the first welding strip group or the fourth welding strip group from falling. Similarly, the head and tail of each second welding strip group or each third welding strip group are clamped in the corresponding first clamping part 23 and the second clamping part 24 respectively.

[0164] Below Figure 6 Taking a specific embodiment as an example, the working process and working principle of the welding strip processing mechanism 20 are exemplarily described.

[0165] Figure 6 The solder strip processing mechanism 20 shown includes six first solder strip clamping assemblies 21, six second solder strip clamping assemblies 25, five first solder strip slitting assemblies 26 and five second solder strip slitting assemblies 27, wherein: a first solder strip slitting assembly 26 is arranged between two adjacent first solder strip clamping assemblies 21, and a second solder strip slitting assembly 27 is arranged between two adjacent second solder strip clamping assemblies 25.

[0166] Figure 6 The slitting and adjustment process of the solder strip processing mechanism 20 in the illustrated embodiment is as follows:

[0167] First, a plurality of (eg, 17 in the figure) solder ribbons extending along a first horizontal direction (eg, the X-axis direction in the figure) are pulled onto the solder ribbon processing mechanism 20 using a solder ribbon pulling assembly 53 .

[0168] The first solder strip clamping assembly 21 and the second solder strip clamping assembly 25 are controlled to clamp the solder strips, wherein: the six first solder strip clamping assemblies 21 cooperate to clamp all odd-numbered solder strips from different positions, and the six second solder strip clamping assemblies 25 cooperate to clamp all even-numbered solder strips from different positions.

[0169] Next, the five first welding strip cutting components 26 and the five second welding strip cutting components 27 are controlled to synchronously cut off all the odd-numbered welding strips and all the even-numbered welding strips from the corresponding positions. In this way, six first welding strip groups and six second welding strip groups are obtained. In addition, each first welding strip group is clamped on the corresponding first welding strip clamping component 21, and each second welding strip group is clamped on the corresponding second welding strip clamping component 25.

[0170] Finally, the strip spacing component 28 controls the six first strip clamping components 21 to move apart, thereby adjusting the spacing between the six first strip groups to a predetermined spacing. The strip spacing component 28 controls the six second strip clamping components 25 to move apart, thereby adjusting the spacing between the six second strip groups to a predetermined spacing.

[0171] like Figure 5 , Figure 7 As shown, optionally, the first clamping portion 23 and the second clamping portion 24 have the same structure. Figure 8 , Fig. 9 As shown, taking the first clamping portion 23 as an example, it includes a first mounting seat 231 , a fixed clamping plate 232 , a movable clamping plate 233 and a movable clamping plate driving member 234 .

[0172] The fixing clamping plate 232 is fixedly mounted on the first mounting seat 231 and is arranged along a second horizontal direction (such as Figure 8 The top end of the fixing clamp plate 232 forms a horizontal pressure-bearing surface.

[0173] The movable clamping plate 233 is slidably connected to the fixed clamping plate 232 . A plurality of first clamping members 237 are arranged at intervals on the top of the movable clamping plate 233 along the second horizontal direction. The first clamping members 237 are located above the pressure-bearing surface.

[0174] The movable clamping plate driving member 234 is disposed on the first mounting seat 231 and is drivingly connected to the movable clamping plate 233. The movable clamping plate driving member 234 is configured to drive the movable clamping plate 233 to slide relative to the fixed clamping plate 232 to achieve position switching of the movable clamping plate 233 between a high position and a low position.

[0175] When the movable clamping plate 233 slides to the high position, a gap is formed between each first clamping member 237 and the pressure-bearing surface for the welding strip to pass vertically. At this time, the welding strip is pulled onto the pressure-bearing surface, wherein there is a welding strip corresponding to the lower side of each first clamping member 237 .

[0176] When the movable clamping plate 233 slides to the lower position, each first clamping member 237 presses a corresponding welding strip onto the pressure-bearing surface.

[0177] The first clamping member 237 presses the welding strip downward onto the pressure-bearing surface of the fixed clamping plate 232 to clamp the welding strip, thereby ensuring stable clamping of various welding strips such as round welding strips and flat welding strips, and preventing the welding strip from turning over due to uneven force.

[0178] Optionally, elastic pressure bearing members 238 corresponding to the first clamping members 237 are arranged at intervals along the second horizontal direction on the upper end of the pressure bearing surface of the fixed clamping plate 232. When the movable clamping plate 233 slides to the lower position, each first clamping member 237 elastically presses a welding strip onto the corresponding elastic pressure bearing member 238.

[0179] Continue to refer Figure 8 and Fig. 9 Optionally, the first clamping portion 23 further includes a first connecting column 235, a first guide hole 236 is provided on the movable clamping plate 233, a first end of the first connecting column 235 is fixedly connected to the fixed clamping plate 232, and a second end of the first connecting column 235 is inserted into the first guide hole 236. In particular, a first guide path is formed in the first guide hole 236 from top to bottom, and the first guide path includes a first lifting section 2361 and a first offset section 2362 that are connected, the first lifting section 2361 is arranged in the vertical direction, and the first offset section 2362 is arc-shaped. The first clamping member 237 on the movable clamping plate 233 presses the welding strip onto the pressure-bearing surface according to the first guide path of the first guide hole 236.

[0180] When the movable clamping plate 233 is in a high position, each first clamping member 237 is located obliquely above the target clamping position (such as the position of the elastic pressure-bearing member 238), thereby avoiding the welding strip and ensuring that the welding strip can be smoothly pulled to the target clamping position.

[0181] When the movable clamping plate driving member 234 drives the movable clamping plate 233 to slide toward the lower position, under the guidance of the first connecting column 235 and the first guide hole 236, the first clamping member 237 first descends vertically to contact with the welding strip, and then descends obliquely. During this process, the welding strip is rubbed and pressed until the welding strip is pressed against the pressure-bearing surface. In this way, the first clamping member 237 can be prevented from being pressed down instantly and quickly, causing the welding strip, especially the flat welding strip, to be compressed and deformed.

[0182] like Figure 5 As shown, optionally, the first welding ribbon cutting assembly 26 and the second welding ribbon cutting assembly 27 have the same structure. Fig.10 As shown, taking the first ribbon slitting assembly 26 as an example, it includes a second mounting seat 261, a fixed cutter 262, a movable cutter seat 263 and a movable cutter seat driving member 264, wherein: the fixed cutter 262 is fixedly arranged on the second mounting seat 261 and along a second horizontal direction perpendicular to the first horizontal direction (such as Fig.10 A fixed cutting blade is formed at the upper edge of the fixed cutter 262.

[0183] The movable knife seat 263 is slidably connected to the fixed cutter 262 . 2n+1 hook knives 267 are arranged at intervals along the second horizontal direction on the movable knife seat 263 . The hook knives 267 are located above the movable knife seat 263 . A movable cutting blade is formed at the lower edge of the hook knives 267 .

[0184] The movable knife seat driving member 264 is configured to drive the movable knife seat 263 to slide relative to the fixed cutter 262 to achieve position switching of the movable knife seat 263 between a high position and a low position.

[0185] When the movable knife seat 263 slides to the high position, a gap for the solder strip to pass through is formed between the movable cutting blades of the 2n+1 hook knives 267 and the fixed cutting blade of the fixed cutter 262. When the movable knife seat 263 slides to the low position, the movable cutting blades of the 2n+1 hook knives 267 cooperate with the fixed cutting blade of the fixed cutter 262 to cut off the solder strip passing between them.

[0186] The first welding strip cutting assembly 26 cuts off all odd-numbered welding strips among the plurality of welding strips pulled onto the welding strip processing mechanism 20. The specific process is as follows:

[0187] In the initial state, the movable knife seat 263 is in a high position, and a gap is formed between the movable cutting blade of each hook knife 267 and the fixed cutting blade of the fixed cutter 262 for the welding strip to pass through.

[0188] Multiple welding ribbons are pulled onto the welding ribbon processing mechanism 20, wherein the movable cutting blade of each hook knife 267 and the fixed cutting blade of the fixed cutting knife 262 pass through a corresponding odd-numbered welding ribbon, and each even-numbered welding ribbon is located between adjacent hook knives 267 or at an avoidance position outside the hook knife 267.

[0189] After each first solder strip clamping assembly 21 of the solder strip processing mechanism 20 clamps all the odd-numbered solder strips, the movable knife seat 263 slides to a low position, and the movable cutting blade of each hook knife 267 cooperates with the fixed cutting blade of the fixed cutter 262 to cut off the corresponding first odd-numbered solder strips passing therebetween.

[0190] The hook knife of the second solder strip cutting assembly 27 is staggered from the hook knife of the first solder strip cutting assembly 26 in the second horizontal direction, and the staggered distance is equal to the spacing between the solder strips. Therefore, the second solder strip cutting assembly 27 can complete the cutting of all even-numbered solder strips among the multiple solder strips pulled onto the solder strip processing mechanism 20, and the odd-numbered solder strips can be avoided during the cutting process.

[0191] By using a hook knife as the cutting operation part, the first solder strip cutting component 26 and the second solder strip cutting component 27 can cut both round solder strips and flat solder strips, thereby increasing the compatibility of the first solder strip cutting component 26 and the second solder strip cutting component 27.

[0192] Continue to refer Fig.10 As shown, still taking the first solder strip cutting assembly 26 as an example, it also includes a second connecting column 265, a second guide hole 266 is provided on the movable knife seat 263, a first end of the second connecting column 265 is connected to the fixed cutter 262, and a second end of the second connecting column 265 is inserted into the second guide hole 266. A second guide path is formed in the second guide hole 266 from top to bottom, and the second guide path includes a connected second lifting section and a second offset section, the second lifting section is arranged in the vertical direction, and the second offset section is in an arc shape, and the movable cutting blade of the hook knife cuts the solder strip according to the second guide path of the second guide hole 266.

[0193] When the movable knife seat 263 is in a high position, a gap is formed between the movable cutting blade of each hook knife 267 and the fixed cutting blade of the fixed cutter 262 for the welding strip to pass through.

[0194] When the movable knife seat driving member 264 drives the movable knife seat 263 to slide toward the lower position, under the guidance of the second connecting column 265 and the second guide hole 266, the hook knife 267 first descends vertically to contact the welding strip, and then descends obliquely until the welding strip is cut off. In this way, the hook knife 267 can be prevented from cutting down quickly and instantly, thereby rolling the flat welding strip.

[0195] like Figure 5 As shown, optionally, the welding ribbon spacing assembly 28 includes a first slide rail 281 , a first driving portion 282 , a second slide rail 283 and a second driving portion 284 .

[0196] A plurality of first solder strip clamping assemblies 21 are connected to the first slide rail 281 , and the first driving part 282 is used to drive the plurality of first solder strip clamping assemblies 21 to slide apart along the first slide rail 281 .

[0197] A plurality of second solder strip clamping assemblies 25 are connected to the second slide rail 283 , and the second driving part 284 is used to drive the plurality of second solder strip clamping assemblies 25 to slide apart along the second slide rail 283 .

[0198] Optionally, among the plurality of first solder strip clamping assemblies 21, the first solder strip clamping assembly 21 at the rear end is fixed on the first slide rail 281, and the remaining first solder strip clamping assemblies 21 are slidably connected to the first slide rail 281. The driving end of the first driving part 282 is connected to the first solder strip clamping assembly 21 at the front end.

[0199] Adjacent first solder strip clamping assemblies 21 are connected via a first connecting rod, wherein at least one end of the first connecting rod is movably connected to the corresponding first solder strip clamping assembly 21 and can slide in a first horizontal direction relative to the first solder strip clamping assembly 21. In this way, relative displacement can be achieved between adjacent first solder strip clamping assemblies 21.

[0200] Similarly, among the plurality of second solder strip clamping assemblies 25, the second solder strip clamping assembly 25 at the rear end is fixed on the second slide rail 283, and the remaining second solder strip clamping assemblies 25 are slidably connected to the second slide rail 283. The driving end of the second driving part 284 is connected to the second solder strip clamping assembly 25 at the front end.

[0201] Adjacent second solder strip clamping assemblies 25 are connected via a second connecting rod, wherein at least one end of the second connecting rod is movably connected to the corresponding second solder strip clamping assembly 25 and can slide in the first horizontal direction relative to the second solder strip clamping assembly 25. In this way, relative displacement can be achieved between adjacent second solder strip clamping assemblies 25.

[0202] like Figures 11 to 13 As shown, the second embodiment of the solder strip processing mechanism 20 includes a base 61, a plurality of (eg, 13 in the figure) solder strip processing components 62 and a spacing drive component.

[0203] Several strip processing components 62 are arranged on the base 61 along the first horizontal direction (such as the X-axis direction in the figure). Several strip processing components 62 are configured to guide the strips corresponding to the first strip group 111 or the fourth strip group 122 supplied by the strip feeding mechanism 50, clamp the remaining strips at the same time, and cut each strip in the first strip group 111 or the fourth strip group 122 into a plurality of strip segments along the first horizontal direction to obtain a plurality of first strip groups 111 or the fourth strip group 122; several strip processing components 62 are also configured to guide the strips corresponding to the second strip group 112 or the third strip group 121 supplied by the strip feeding mechanism 50, clamp the remaining strips at the same time, and cut each strip in the second strip group 112 or the third strip group 121 into a plurality of strip segments along the first horizontal direction to obtain a plurality of second strip groups 112 or the third strip group 121.

[0204] Through the cooperation of the welding strip processing component 62 and the spacing driving component, multiple welding strips are staggered and cut into the first welding strip group 111 and the second welding strip group 112 or the fourth welding strip group 122 and the third welding strip group 121, and the first welding strip group 111 and the second welding strip group 112 or the fourth welding strip group 122 and the third welding strip group 121 are adjusted along the welding strip extension direction to meet the arrangement requirements between the first welding strip group 111 and the second welding strip group 112 or the fourth welding strip group 122 and the third welding strip group 121 in the battery string. In this way, the subsequent welding strip conveying mechanism 10 can lay all the staggered and adjusted spacing welding strip groups on the arranged IBC battery cells at one time, thereby greatly improving the production efficiency of the IBC battery string.

[0205] The following specifically describes the solder strip processing mechanism 20 by taking the preparation of the first solder strip group 111 and the second solder strip group 112 as an example.

[0206] One of the optional settings is:

[0207] All odd-numbered (such as the 1st, 3rd, 5th, 7th, 9th, 11th and 13th in the figure) welding strip processing components 62 among the plurality of welding strip processing components 62 are configured to cooperate in clamping all odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate in guiding all even-numbered welding strips among the plurality of welding strips. That is, all odd-numbered welding strips among the plurality of welding strips are clamped and fixed by the odd-numbered welding strip processing components 62, and cannot move in the first horizontal direction relative to the odd-numbered welding strip processing components 62. All even-numbered welding strips among the plurality of welding strips are not clamped and fixed by the odd-numbered welding strip processing components 62, and can move in the first horizontal direction relative to the odd-numbered welding strip processing components 62, and the odd-numbered welding strip processing components 62 only implement movement guidance for them.

[0208] In addition, each odd-numbered welding ribbon processing assembly 62 is further configured to cut off all even-numbered welding ribbons at corresponding positions to obtain a plurality of second welding ribbon groups 112. That is, all even-numbered welding ribbons among the plurality of welding ribbons are cut into a plurality of second welding ribbon groups 112 by all odd-numbered welding ribbon processing assemblies 62 among the plurality of welding ribbon processing assemblies 62.

[0209] Correspondingly, all the even-numbered (such as the 2nd, 4th, 6th, 8th, 10th, and 12th in the figure) welding strip processing components 62 of the plurality of welding strip processing components are configured to cooperate with clamping all the even-numbered welding strips of the plurality of welding strips, and are configured to cooperate with guiding all the odd-numbered welding strips of the plurality of welding strips. That is, all the even-numbered welding strips of the plurality of welding strips are clamped and fixed by the even-numbered welding strip processing components 62, and they cannot move in the first horizontal direction relative to the even-numbered welding strip processing components 62. All the odd-numbered welding strips of the plurality of welding strips are not clamped and fixed by the even-numbered welding strip processing components 62, and they can move in the first horizontal direction relative to the even-numbered welding strip processing components 62, and the even-numbered welding strip processing components 62 only implement movement guidance for them.

[0210] In addition, each even-numbered welding strip processing assembly 62 is further configured to cut off all odd-numbered welding strips at corresponding positions to obtain a plurality of first welding strip groups 111. That is, all odd-numbered welding strips among the plurality of welding strips are cut into a plurality of first welding strip groups 111 by all even-numbered welding strip processing assemblies 62 among the plurality of welding strip processing assemblies 62.

[0211] After all the even-numbered welding strips and all the odd-numbered welding strips among the multiple welding strips are cut, each first welding strip group 111 is clamped and fixed on an odd-numbered welding strip processing assembly 62, and the end of each first welding strip group 111 is located on an adjacent even-numbered welding strip processing assembly 62. Each second welding strip group 112 is clamped and fixed on an even-numbered welding strip processing assembly 62, and the end of each second welding strip group 112 is located on an adjacent odd-numbered welding strip processing assembly 62.

[0212] The spacing drive component is disposed on the base 61. When all the even-numbered welding ribbons and all the odd-numbered welding ribbons among the multiple welding ribbons are cut off, the spacing drive component is configured to drive the plurality of welding ribbon processing components 62 to separate to both sides relative to the middle position of the base in the first horizontal direction, so as to adjust the first welding ribbon group 111 and the second welding ribbon group 112 along the first horizontal direction, so that the spacing between the first welding ribbon groups 111 and the spacing between the second welding ribbon groups 112 meet the IBC battery stringing requirements.

[0213] Since the ends of each first welding ribbon group 111 are guided by the adjacent even-numbered welding ribbon processing components 62 during movement, and the ends of each second welding ribbon group 112 are guided by the adjacent odd-numbered welding ribbon processing components 62 during movement, the ends of each first welding ribbon group 111 and the second welding ribbon group 112 are maintained in the first horizontal direction without sagging or tilting.

[0214] Another optional setting is:

[0215] All odd-numbered (such as the 1st, 3rd, 5th, 7th, 9th, 11th and 13th in the figure) welding strip processing components 62 among the plurality of welding strip processing components 62 are configured to cooperate with clamping all even-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all odd-numbered welding strips among the plurality of welding strips. That is, all even-numbered welding strips among the plurality of welding strips are clamped and fixed by the odd-numbered welding strip processing components 62, and cannot move in the first horizontal direction relative to the odd-numbered welding strip processing components 62. All odd-numbered welding strips among the plurality of welding strips are not clamped and fixed by the odd-numbered welding strip processing components 62, and can move in the first horizontal direction relative to the odd-numbered welding strip processing components 62, and the odd-numbered welding strip processing components 62 only implement movement guidance for them.

[0216] In addition, each odd-numbered welding ribbon processing assembly 62 is further configured to cut off all odd-numbered welding ribbons at corresponding positions to obtain a plurality of first welding ribbon groups 111. That is, all odd-numbered welding ribbons among the plurality of welding ribbons are cut into a plurality of first welding ribbon groups 111 by all odd-numbered welding ribbon processing assemblies 62 among the welding ribbon processing assemblies 62.

[0217] Correspondingly, all the even-numbered (such as the 2nd, 4th, 6th, 8th, 10th, and 12th in the figure) welding strip processing components 62 among the plurality of welding strip processing components 62 are configured to cooperate with clamping all the odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all the even-numbered welding strips among the plurality of welding strips. That is, all the odd-numbered welding strips among the plurality of welding strips are clamped and fixed by the even-numbered welding strip processing components 62, and they cannot move in the first horizontal direction relative to the even-numbered welding strip processing components 62. All the even-numbered welding strips among the plurality of welding strips are not clamped and fixed by the even-numbered welding strip processing components 62, and they can move in the first horizontal direction relative to the even-numbered welding strip processing components 62, and the even-numbered welding strip processing components 62 only implement movement guidance for them.

[0218] In addition, each even-numbered welding strip processing assembly 62 is further configured to cut off all even-numbered welding strips at corresponding positions to obtain a plurality of second welding strip groups 112. That is, all even-numbered welding strips among the plurality of welding strips are cut into a plurality of second welding strip groups 112 by all even-numbered welding strip processing assemblies 62 among the welding strip processing assemblies 62.

[0219] After all the even-numbered welding strips and all the odd-numbered welding strips among the multiple welding strips are cut, each first welding strip group 111 is clamped and fixed on an even-numbered welding strip processing assembly 62, and the end of each first welding strip group 111 is located on an adjacent odd-numbered welding strip processing assembly 62. Each second welding strip group 112 is clamped and fixed on an odd-numbered welding strip processing assembly 62, and the end of each second welding strip group 112 is located on an adjacent even-numbered welding strip processing assembly 62.

[0220] The spacing drive component is disposed on the base 61. When all the even-numbered welding ribbons and all the odd-numbered welding ribbons among the multiple welding ribbons are cut off, the spacing drive component is configured to drive the plurality of welding ribbon processing components 62 to separate to both sides relative to the middle position of the base 61 in the first horizontal direction, so as to adjust the first welding ribbon group 111 and the second welding ribbon group 112 along the first horizontal direction, so that the spacing between the first welding ribbon groups 111 and the spacing between the second welding ribbon groups 112 meet the IBC battery stringing requirements.

[0221] Since the ends of each first welding ribbon group 111 are guided by the adjacent odd-numbered welding ribbon processing components 62 during movement, and the ends of each second welding ribbon group 112 are guided by the adjacent even-numbered welding ribbon processing components 62 during movement, the ends of each first welding ribbon group 111 and the second welding ribbon group 112 are maintained in the first horizontal direction without sagging or tilting.

[0222] Optionally, the solder strip processing mechanism 20 in the embodiment of the present application includes 2r+1 solder strip processing components 62, that is, the number of solder strip processing components 62 is an odd number. In this case, the r+1 solder strip processing component 62 (that is, the solder strip processing component 62 located in the middle) can be fixedly connected to the base 61, and the remaining 2r solder strip processing components 62 are slidably connected to the base 61, and the spacing drive component includes r spacing drive members 63. Among them: the jth spacing drive member is used to drive the jth solder strip processing component and the 2r+2-jth solder strip processing component to move closer to the middle of the base or separate to both sides, wherein 1≤j≤r.

[0223] by Figures 11 to 13 Taking the solder strip processing mechanism 20 in the embodiment as an example, it includes 13 solder strip processing components 62, that is, r=6, wherein the 7th solder strip processing component 62 located in the middle position is fixedly connected to the base 61, and the remaining 12 solder strip processing components 62 are slidably connected to the base 61.

[0224] The split drive assembly includes six split drive members 63, wherein:

[0225] The first spacing driving member is used to drive the first solder strip processing assembly 62 and the thirteenth solder strip processing assembly 62 to move toward the middle of the base 61 (ie, the position of the seventh solder strip processing assembly 62) or to move apart to both sides.

[0226] The second separation driving member is used to drive the second solder strip processing assembly 62 and the twelfth solder strip processing assembly 62 to move toward the middle of the base 61 or to separate toward both sides.

[0227] The third spacing driving member is used to drive the third solder strip processing assembly 62 and the eleventh solder strip processing assembly 62 to move toward the middle of the base 61 or to separate toward both sides.

[0228] The fourth spacing driving member is used to drive the fourth solder strip processing assembly 62 and the tenth solder strip processing assembly 62 to move toward the middle of the base 61 or to separate toward both sides.

[0229] The fifth spacing driving member is used to drive the fifth solder strip processing assembly 62 and the ninth solder strip processing assembly 62 to move toward the middle of the base 61 or to move away from each other.

[0230] The sixth spacing driving member is used to drive the sixth solder strip processing assembly 62 and the eighth solder strip processing assembly 62 to move toward the middle of the base 61 or to separate toward both sides.

[0231] Of course, the solder strip processing mechanism 20 in the embodiment of the present application may also include 2r solder strip processing components 62, that is, the number of solder strip processing components 62 is an even number. In this case, the 2r solder strip processing components 62 are all slidably connected to the base 61. The spacing drive component includes r spacing drive members 63, wherein: the jth spacing drive member 63 is used to drive the jth solder strip processing component 62 and the 2r+1-jth solder strip processing component to move toward the middle of the base or to separate to both sides.

[0232] For example, the solder strip processing mechanism 20 includes 12 solder strip processing components 62 , that is, r=6, and the 12 solder strip processing components 62 are all slidably connected to the base 61 .

[0233] The split drive assembly includes six split drive members 63, wherein:

[0234] The first spacing driving member is used to drive the first solder strip processing assembly 62 and the twelfth solder strip processing assembly 62 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0235] The second separation driving member is used to drive the second solder strip processing assembly 62 and the eleventh solder strip processing assembly 62 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0236] The third spacing driving member is used to drive the third solder strip processing assembly 62 and the tenth solder strip processing assembly 62 to move toward the middle of the bottom plate 1 or to move away from each other.

[0237] The fourth spacing driving member is used to drive the fourth solder strip processing assembly 62 and the ninth solder strip processing assembly 62 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0238] The fifth spacing driving member is used to drive the fifth solder strip processing assembly 62 and the eighth solder strip processing assembly 62 to move toward the middle of the bottom plate 1 or to move away from each other.

[0239] The sixth spacing driving member is used to drive the sixth solder strip processing assembly 62 and the seventh solder strip processing assembly 62 to move toward the middle of the bottom plate 1 or to move away from each other.

[0240] Optionally, the spacing driving member 63 includes a driving wheel 631, a driven wheel 632, a synchronous belt 633 and a driving member 634, wherein: the driving wheel 631 and the driven wheel 632 are rotatably mounted on the base 61, the synchronous belt 633 is sleeved on the driving wheel 631 and the driven wheel 632 along the first horizontal direction, and the driving member 634 is used to drive the driving wheel 631 to rotate, so as to drive the synchronous belt 633 to rotate. The jth welding strip processing assembly 62 is fixedly connected to the first side belt body of the synchronous belt 633, and the 2r+1-jth welding strip processing assembly 62 or the 2r+2-jth welding strip processing assembly 62 is fixedly connected to the second side belt body of the synchronous belt 633. When the driving member 634 drives the synchronous belt 633 to rotate, the jth welding strip processing assembly 62 and the 2r+1-jth welding strip processing assembly 62 or the 2r+2-jth welding strip processing assembly 62 are driven to move closer to the middle of the base or separate to both sides.

[0241] The synchronous belt drive method can ensure that the two corresponding welding strip processing components 62 move in opposite directions at the same speed to move closer to the middle of the base 61 or separate to both sides. Compared with other transmission methods, it has a simple structure, low cost and easy maintenance.

[0242] Optionally, among the r spacing driving members 63 , the j-th spacing driving member 63 drives the corresponding solder strip processing assembly 62 to separate to both sides before the j+1-th spacing driving member 63 .

[0243] Still Figures 11 to 13 Taking the solder strip processing mechanism 20 in the embodiment as an example, the fifth spacing driving member 63 first drives the first solder strip processing assembly 62 and the thirteenth solder strip processing assembly 62 to separate to both sides, and the second spacing driving member 63 drives the second solder strip processing assembly 62 and the twelfth solder strip processing assembly 62 to separate to both sides, and then the third spacing driving member 63, the fourth spacing driving member 63, the fifth spacing driving member 63 and the sixth spacing driving member 63 drive the corresponding two solder strip processing assemblies 62 to separate to both sides in sequence or simultaneously at a certain time interval, and finally complete the spacing adjustment of the first solder strip group 111 and the second solder strip group 112. It can be seen that the pair of solder strip processing assemblies 62 farthest from the center of the base are first driven to move away from each other, and finally the pair of solder strip processing assemblies 62 closest to the center of the base are driven to move away from each other.

[0244] By setting the driving sequence of the r spacing driving members 63 in this way, it can be achieved that when each welding ribbon processing assembly 62 is separated to both sides to form a spacing, it will not be blocked by the adjacent welding ribbon processing assembly 62 outside it, thereby preventing the ends of the first welding ribbon group 111 and the second welding ribbon group 112 from collision and deformation.

[0245] like Fig.14As shown, optionally, at least one guide rail 611 extending along the first horizontal direction is further provided on the base 61, and a plurality of solder strip processing components 3 are slidably connected to the guide rail 611 via a slider. The guide rail 611 implements sliding guidance for all solder strip processing components 62 to prevent the solder strip processing components 62 from deviating and causing the solder strip to be offset.

[0246] like Figures 15 to 18 As shown, optionally, the welding strip processing assembly 62 includes: a mounting bracket 621 mounted on the base 61, two clamping parts 622 arranged in pairs on the mounting bracket 621, and a cutting part 623 located between the two clamping parts 622, wherein: the two clamping parts 622 are used to clamp one of all odd welding strips and all even welding strips from two different positions, and guide the other of all odd welding strips and all second even welding strips from two different positions. The cutting part 623 is used to cut off the odd welding strips or all second even welding strips guided by the clamping part 23.

[0247] Optionally, the clamping portion 622 includes a pressure plate 6221, a pressure plate 6222 and a pressure plate driving unit 6223, wherein: the pressure plate 6222 can be lifted and lowered on the mounting bracket 621, and is transmission-connected to the pressure plate driving unit 6223 disposed on the mounting bracket 621, and a plurality of pressure heads 6224 are disposed at the top end of the pressure plate 6222 along a second horizontal direction (the Y-axis direction in the figure), and the second horizontal direction is perpendicular to the first horizontal direction.

[0248] The pressure plate 6221 is fixedly mounted on the mounting bracket 621 and extends along the second horizontal direction. A horizontal pressure surface is formed at the top of the pressure plate 6221. The pressure surface is provided with ejector pins 6225 corresponding to all odd-numbered pressure heads or all even-numbered pressure heads among the plurality of pressure heads 6224. The ejector pins 6225 extend upward from the pressure surface. The pressure plate driving unit 6223 is used to drive the pressure plate 6222 to slide up and down relative to the pressure plate 6221.

[0249] When the pressure plate 6222 slides down to the low position:

[0250] All odd-numbered pressure heads 6224 among the multiple pressure heads 6224 clamp all odd-numbered solder strips among the multiple solder strips onto the ejector pin 6225 one by one to implement pressing and fixing of all odd-numbered solder strips. There is a gap between all even-numbered pressure heads 6224 among the multiple pressure heads 6224 and the pressure plate 6221. Therefore, all even-numbered pressure heads 6224 among the multiple pressure heads 6224 cannot press all even-numbered solder strips among the multiple solder strips, and can only guide all even-numbered solder strips among the multiple solder strips one by one.

[0251] Alternatively, all the even-numbered pressing heads 6224 in the plurality of pressing heads 6224 clamp all the even-numbered welding strips in the plurality of welding strips onto the ejector pins 6225 one by one, so as to press and fix all the even-numbered welding strips in the welding strips. There is a gap between all the odd-numbered pressing heads 6224 in the plurality of pressing heads 6224 and the pressure plate 6221, so all the odd-numbered pressing heads 6224 in the plurality of pressing heads 6224 cannot press all the odd-numbered welding strips in the plurality of welding strips, and can only guide all the odd-numbered welding strips in the plurality of welding strips one by one.

[0252] like Fig.16 As shown, optionally, the clamping portion 622 also includes a guide comb 6226 arranged on the inner side of the pressure plate 6221, and a plurality of guide grooves 6227 corresponding to the pressure head 6224 are arranged at intervals along the second horizontal direction on the guide comb 6226, and each guide groove 6227 is used to guide one of the multiple welding strips to ensure that each welding strip passes from under the corresponding pressure head 6224, and is finally pressed onto the pressure plate 6221 by the pressure head 6224, or is guided by the pressure head 6224.

[0253] like Fig.19 As shown, optionally, the cutting part 623 includes a fixed cutter 6231, a movable cutter 6232 and a cutter driving unit 6233, wherein: the fixed cutter 6231 is fixedly arranged on the mounting bracket 621 and extends along the second horizontal direction, and a fixed blade is formed at the upper edge of the fixed cutter 6231. The movable cutter 6232 is movably mounted on the mounting bracket 621, and is in driving connection with the cutter driving unit 6233 arranged on the mounting bracket 621, and a plurality of hook knives 6234 are arranged side by side along the second horizontal direction on the movable cutter 6232, and the hook knives 6234 extend upward from the upper edge of the movable cutter 6232, and a movable blade is formed at the lower edge of the hook knives 6234.

[0254] The cutter drive unit 6233 is used to drive the movable cutter 6232 to slide up and down. When the movable cutter 6232 slides upward to a high position, a gap is formed between the movable blade of each hook knife 6234 and the fixed blade of the fixed cutter 6231 for an odd-numbered welding ribbon to pass through, and each even-numbered welding ribbon passes between adjacent hook knives 6234.

[0255] When the movable cutter 6232 slides downward to a low position, each hook knife 6234 cooperates with the fixed cutter 6231 to cut off the odd-numbered welding strips passing therebetween. That is, when the cutting unit 623 cuts off all the odd-numbered welding strips among the multiple welding strips, it avoids all the even-numbered welding strips among the multiple welding strips.

[0256] Alternatively, when the movable cutter 6232 slides upward to a high position, a gap is formed between the movable blade of each hook knife 6234 and the fixed blade of the fixed cutter 6231 for an even-numbered welding strip to pass through, and each odd-numbered welding strip passes between adjacent hook knives 6234. When the movable cutter 6232 slides downward to a low position, each hook knife 6234 cooperates with the fixed cutter 6231 to cut off the even-numbered welding strips passing between the two. That is, when the cutting part 623 cuts off all the even-numbered welding strips among the multiple welding strips, it avoids all the odd-numbered welding strips among the multiple welding strips.

[0257] like Fig. 20 , Fig.21 As shown, as an optional embodiment, the welding ribbon conveying mechanism 10 includes a moving mechanism (not shown in the figure), a mounting bracket 11, a plurality of clamping units 12 and a clamping unit driving mechanism 15.

[0258] Wherein: the mounting bracket 11 is connected to the driving end of the moving mechanism, the pressing unit driving mechanism 15 is arranged on the mounting bracket 11, and the moving mechanism is configured to drive the mounting bracket 11 to move.

[0259] A plurality of pressing units 12 are arranged along a first horizontal direction (eg Fig. 20 and Fig.21 The soldering units 12 are arranged side by side on the mounting bracket 11 in the X-axis direction, and the clamping unit 12 is configured to clamp the two ends of the soldering ribbon group up and down.

[0260] The pressing unit driving mechanism 15 is configured to drive the pressing unit 12 to move closer to or away from the end of the welding ribbon group.

[0261] The process of clamping and conveying the welding ribbon group by the welding ribbon conveying mechanism 10 in this embodiment is as follows:

[0262] The moving mechanism first drives the plurality of pressing units 12 to the top of the plurality of welding ribbon groups to be picked up;

[0263] Next, the moving mechanism drives the plurality of pressing units 12 to descend, so that each pressing unit 12 is located at the side of the end of the corresponding welding ribbon group;

[0264] Next, the clamping unit driving mechanism 15 drives each clamping unit 12 to translate toward the corresponding welding ribbon group, so that the ends of the welding ribbon group enter into the corresponding clamping units 12, and each clamping unit 12 then clamps the ends of the welding ribbon group up and down;

[0265] Finally, the moving mechanism drives the multiple clamping units 12 clamping the solder ribbon group to the top of the specified position, and each clamping unit 12 releases the end of the solder ribbon group. The clamping unit driving mechanism 15 then drives each clamping unit 12 to translate away from the corresponding solder ribbon group, so that each solder ribbon group detaches from the clamping unit 12 and falls to the specified position.

[0266] It can be seen that the solder strip conveying mechanism 10 in the present application, its clamping unit 12 clamps the ends of the corresponding solder strip group in an up-and-down clamping manner, thereby ensuring that the picked-up solder strips, especially flat solder strips, will not flip over due to uneven force.

[0267] In this embodiment, the welding ribbon conveying mechanism 10 includes m+1 pressing units, such as Fig. 22 As shown, except for the first pressing unit at the head and the m+1th pressing unit at the tail, the remaining pressing units 12 include a first pressing portion 13 and a second pressing portion 14. In each pressing unit 12, the first pressing portion 13 and the second pressing portion 14 are arranged in the same orientation, for example, the first pressing portion 13 is arranged on the left, and the second pressing portion 14 is arranged on the right.

[0268] The first pressing unit 12 at the head (such as the left end) includes at least a first pressing portion 13 , and the m+1th pressing unit 12 at the tail (such as the right end) includes at least a second pressing portion 14 .

[0269] Among them: the first clamping part 13 of the first clamping unit 12 located at the head is configured to clamp the first end (such as the left end) of the first welding strip group, and the second clamping part 14 of the m+1th clamping unit 12 located at the tail is configured to clamp the second end (such as the right end) of the mth welding strip group.

[0270] The second clamping portion 14 of the i-th clamping unit 12 is configured to clamp the second end of the i-1-th welding ribbon group, and the first clamping portion 13 of the i-th clamping unit is configured to clamp the first end of the i-th welding ribbon group, where i is a natural number between 2 and m.

[0271] The clamping unit driving mechanism 15 is configured to drive each first clamping part 13 and each second clamping part 14 to move along the first horizontal direction toward the corresponding welding tape group, so that the two ends of each welding tape group are respectively inserted into the corresponding first clamping part 13 and the second clamping part 14, and move away from the corresponding welding tape group after the welding tape conveying mechanism 10 lays the welding tape group at the designated position.

[0272] By performing the above-mentioned configuration on the welding ribbon conveying mechanism 10, each welding ribbon group is clamped by the first clamping part 13 and the second clamping part 14 of two adjacent clamping units 12. In this way, the welding ribbon conveying mechanism 10 can synchronously convey m staggered welding ribbon groups at one time. If m is set to the number of welding ribbon groups required for a string of IBC battery strings, then one conveying can meet the welding ribbon laying requirements of a string of IBC battery strings.

[0273] In addition, during the handling process, by controlling the first pressing part 13 and the second pressing part 14 to move away from the corresponding solder tape group, the solder tape group is straightened, and finally it is ensured that the solder tape group can accurately fall to the designated position.

[0274] As Fig. 22 shown, optionally, the structures of the first pressing part 13 and the second pressing part 14 are the same. As Figure 23 to Figure 25 shown, taking the first pressing part 13 as an example, it includes a connecting bracket 131, a fixed pressing plate 132, a movable pressing plate 133 and a movable pressing plate driving member 134.

[0275] Among them: The connecting bracket 131 is linked with the movable part of the pressing unit driving mechanism 15.

[0276] The fixed pressing plate 132 is fixedly connected to the lower end of the connecting bracket 131. Along the second horizontal direction on the fixed pressing plate 132 (such as Fig.23 and Fig.24 the Y-axis direction in), 2n + 1 bearing tongue plates 135 are arranged side by side, and the second horizontal direction is perpendicular to the first horizontal direction.

[0277] At both ends of the bearing tongue plate 135, a support plate extends upward respectively, and the two support plates are fixedly connected to the fixed pressing plate 132 respectively. That is, the bearing tongue plate 135 is generally in a "C" - shaped structure.

[0278] The movable pressing plate 133 is located above the fixed pressing plate 132. Below the movable pressing plate 133, 2n + 1 pressure rods 136 corresponding to the bearing tongue plates 135 one by one are arranged. The pressure rods 136 are elastically connected to the movable pressing plate 133 through elastic members. Each pressure rod 136 passes through the fixed pressing plate 132 and is located above the bearing tongue plate 135. The gap between each pressure rod 136 and the corresponding bearing tongue plate 135 is for a solder tape to pass through.

[0279] The movable pressing plate driving member 134 is installed on the connecting bracket 131 and is in transmission connection with the movable pressing plate 133. The movable pressing plate driving member 134 is configured to drive the movable pressing plate 133 to move up and down relative to the fixed pressing plate 132.

[0280] When the movable pressing plate 133 moves upward to the high position, each pressure rod 136 moves away from the corresponding bearing tongue plate 135. When the first pressing part 13 moves towards the corresponding solder tape group, the end of each solder tape in the solder tape group enters the gap between the corresponding bearing tongue plate 135 and the pressure rod 136.

[0281] When the movable pressing plate 133 moves downward to the low position, each pressure rod 136 presses the end of the solder tape against the bearing tongue plate 135.

[0282] It can be seen that by performing the above-mentioned setting on the first clamping part 13, when the first clamping part 13 moves toward the corresponding welding strip group, one end of each welding strip in the welding strip group can enter into the first clamping part 13, and be clamped up and down by the pressure rod 136 and the bearing tongue plate 135 of the first clamping part 13.

[0283] Since the second clamping part 14 moves in the opposite direction to the first clamping part 13, the other end of each soldering strip in the soldering strip group can synchronously enter the corresponding second clamping part 14 and be clamped up and down by the pressure rod 136 and the bearing tongue plate 135 of the second clamping part 14.

[0284] Continue to refer Fig.23 and Fig.24 As shown, optionally, the clamping unit 12 further includes a first mounting seat 16 and a guide rail 17, wherein: the first mounting seat 16 is connected to the mounting bracket 11, and the guide rail 17 is arranged on the first mounting seat 16 along a first horizontal direction. The first clamping portion 13 and / or the second clamping portion 14 are slidably connected to the guide rail 17, and slide along the guide rail 17 under the drive of the clamping unit driving mechanism 15.

[0285] like Fig.21 As shown, optionally, the clamping unit driving mechanism 15 includes two movable parts, and the two movable parts move in opposite directions in the first horizontal direction under the drive of the clamping unit driving mechanism 15. The first clamping part 13 of each clamping unit is connected to one movable part of the clamping unit driving mechanism 15, and the second clamping part 14 of each clamping unit is connected to the other movable part of the clamping unit driving mechanism 15. In this way, the first clamping part 13 of each clamping unit and the second clamping part 14 of each clamping unit move in opposite directions. For example, when the first clamping part 13 of each clamping unit moves to the left, the second clamping part 14 of each clamping unit moves to the right synchronously.

[0286] That is, driven by the clamping unit driving mechanism 15, the first clamping part 13 and the second clamping part 14 for clamping each solder ribbon group move synchronously in opposite directions in the first horizontal direction, thereby clamping and releasing each solder ribbon group.

[0287] Specifically, the clamping unit driving mechanism 15 includes a driving part 151, a first transmission part 152 and a second transmission part 153, wherein the driving part 151 is mounted on the mounting bracket 11. The first transmission part 152 is connected to the first driving end of the driving part 151, and the first clamping part 13 of each clamping unit 12 is connected to the first transmission part 152. The second transmission part 153 is connected to the second driving end of the driving part 151, and the second clamping part 14 of each clamping unit 12 is connected to the second transmission part 153. That is, the first transmission part 152 and the second transmission part 153 constitute two movable parts of the clamping unit driving mechanism 15.

[0288] The driving part 151 drives the first transmission part 152 and the second transmission part 153 to move in the opposite direction along the first horizontal direction, thereby driving all the first pressing parts 13 to move in the opposite direction relative to all the second pressing parts 14 .

[0289] Since both ends of each welding ribbon group are clamped by two adjacent clamping units 12, one end of the welding ribbon group is clamped by the first clamping part 13 of one of the clamping units 12, and the other end of the welding ribbon group is clamped by the second clamping part 14 of the other clamping unit 12.

[0290] By configuring the pressing unit driving mechanism 15 as described above, the pressing unit driving mechanism 15 can drive the first pressing parts 13 of all pressing units and the second pressing parts 14 of all pressing units to translate in opposite directions. For the same welding ribbon group, when the corresponding first pressing part 13 and second pressing part 14 move toward the middle, the welding ribbon group is pressed; when they move toward both sides and separate, the welding ribbon group is tightened or released.

[0291] Optionally, the driving part 151 includes a conveyor belt, the first transmission part 152 is connected to the upper belt body of the conveyor belt, and the second transmission part 153 is connected to the lower belt body of the conveyor belt. When the conveyor belt is conveying, the first transmission part 152 and the second transmission part 153 are driven to move in opposite directions.

[0292] Below Fig.26 Taking a specific embodiment as an example, the structure and working principle of the welding strip conveying mechanism 10 are described in detail.

[0293] Fig.26 In the illustrated embodiment, an IBC battery string includes three IBC battery cells (of course, the number of IBC battery cells included in a real IBC battery string is much greater than three). Therefore, four staggered welding ribbon groups are required to lay the IBC battery string.

[0294] In order to realize the conveying of four staggered soldering ribbon groups, the soldering ribbon conveying mechanism 10 includes five clamping units. Among them:

[0295] The first clamping unit at the head includes only the first clamping portion 13 , the fifth clamping unit at the tail includes only the second clamping portion 14 , and the second, third and fourth clamping units between the two include both the first clamping portion 13 and the second clamping portion 14 .

[0296] The first end of the first welding ribbon group is pressed by the first pressing portion 13 of the first pressing unit, and the second end of the first welding ribbon group is pressed by the second pressing portion 14 of the second pressing unit.

[0297] The first end of the second welding ribbon group is pressed by the first pressing portion 13 of the second pressing unit, and the first end of the second welding ribbon group is pressed by the second pressing portion 14 of the third pressing unit.

[0298] The first end of the third welding ribbon group is pressed by the first pressing portion 13 of the third pressing unit, and the first end of the third welding ribbon group is pressed by the second pressing portion 14 of the fourth pressing unit.

[0299] The first end of the fourth welding ribbon group is pressed by the first pressing portion 13 of the fourth pressing unit, and the second end of the fourth welding ribbon group is pressed by the second pressing portion 14 of the fifth pressing unit.

[0300] That is, each welding ribbon group is clamped by the first pressing part 13 and the second pressing part 14 of two adjacent pressing units.

[0301] like Figure 3 , Figure 4 , Figure 5 and Fig. 20 As shown, the specific process flow of producing two battery strings using the present application is described in detail below, taking the example that each welding ribbon group of each battery string includes 20 columns of welding ribbons.

[0302] 1. When producing the first battery string of 110

[0303] (1) Welding ribbon pulling: the welding ribbon pulling component 53 pulls out 20 welding ribbons from the 1st to 20th welding ribbon rolls. After the welding ribbons are pulled out to a predetermined length, the welding ribbon cutting component 52 cuts the 20 welding ribbons. The welding ribbon pulling component 53 pulls the 20 welding ribbons of the predetermined length to the welding ribbon processing station of the welding ribbon processing mechanism 20. The clamping component at the welding ribbon processing station clamps the 20 welding ribbons at predetermined positions respectively.

[0304] It should be noted that the solder strip cutting assembly 52 in the present application will reciprocate along the solder strip conveying direction. When the solder strip pulling assembly 53 comes to pull the solder strip, the solder strip cutting assembly 52 retreats, so that 21 solder strips protrude from the solder strip cutting assembly 52, which is convenient for the solder strip pulling assembly 53 to clamp the solder strips. The solder strip pressing assembly 51 in front of the solder strip cutting assembly 52 will release the 20 solder strips after the solder strip pulling assembly 53 clamps the 20 solder strips, which is convenient for the solder strip pulling assembly 53 to pull the solder strips. At this time, the 21st solder strip is still in a state of being pressed by the solder strip pressing assembly 51, which prevents the 21st solder strip from retreating.

[0305] (2) Welding strip cutting: After the clamping assembly at the welding strip processing station of the welding strip processing mechanism 20 clamps the welding strip, the cutting assembly cuts each welding strip into a head welding strip, a plurality of middle welding strips and a tail welding strip (refer to Figure 1 The number of solder strips and the number of battery cells in the device are determined by the clamping assembly, and each solder strip is clamped separately by the clamping assembly.

[0306] It should be noted that each row of clamping assemblies is preset with 21 clamping parts, the clamping parts work synchronously, and the 21st clamping part is in an empty clamping state at this time.

[0307] (3) The spacing of the welding strips. The spacing assembly drives each clamping assembly to move individually so that the spacing of each welding strip after cutting becomes larger to a distance that meets the process requirements.

[0308] (4) Welding ribbon transfer: the welding ribbon transport mechanism 10 moves to the welding ribbon processing station to transport the processed 20 rows of welding ribbon groups, and then transports the welding ribbon groups to the stringing station.

[0309] It should be noted that the solder ribbon transport mechanism 10 also has 21 sets of clamping components, so when producing the first type of battery string 110, the 21st set of clamping components is also in an empty clamping state.

[0310] (5) To assemble a battery string, the welding ribbon transport mechanism 10 transports the welding ribbon group to the string assembly station and places the welding ribbons in the first row at corresponding positions on the battery cells.

[0311] It should be noted that Figure 1 It can be seen that the positions of the battery cells and the welding strips in the first battery string 110 and the second battery string 120 are different, and the welding strip conveying mechanism 10 itself can be moved longitudinally (that is, the welding strip is conveyed to the string assembly station in a direction perpendicular to the length direction of the welding strip). Therefore, the position of the welding strip assembly can be adjusted by the welding strip conveying mechanism 10 without changing the position of the battery cell assembly.

[0312] In addition, at the string assembly station, the battery cell group can be laid first and then the welding ribbon group; or the welding ribbon group can be laid first and then the battery cell group.

[0313] 2. When producing the second battery string 120

[0314] The production process is similar to the production process of the first type of battery string 110 , except that when producing the second type of battery string 120 , the solder ribbon pulling assembly 53 pulls out 20 solder ribbons from the 2nd to 21st solder ribbon rolls.

[0315] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A string welding machine, characterized in that: The string welding machine can be used to produce a first type of battery string and a second type of battery string, wherein 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, and 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, wherein the battery cells are IBC battery cells, and the first welding ribbon group, the second welding ribbon group, the third welding ribbon group, and the fourth welding ribbon group all include n columns of welding ribbons, each column of welding ribbons is formed by m welding ribbon segments arranged at intervals, and the welding ribbon segment located in the middle part of each column of welding ribbons is used to realize the electrical connection between two adjacent battery cells, and both ends of the first welding ribbon group protrude from the battery cells at the end of the first type of battery string, and both ends of the fourth welding ribbon group protrude from the battery cells at the end of the second type of battery string; The string welding machine includes a battery cell feeding mechanism, a welding strip feeding mechanism, a welding strip processing mechanism, a welding strip conveying mechanism, a welding conveying mechanism and a welding mechanism; wherein: The battery cell feeding mechanism is used to pick up a number of IBC battery cells and transport the picked-up battery cells to the welding conveying mechanism; The solder strip feeding mechanism comprises 2n+1 coil seats for carrying solder strip coils; When producing the first type of battery string, the welding tape feeding mechanism is configured to supply welding tapes on the 1st to 2nth material rolls to the welding tape processing mechanism, and the welding tape processing mechanism is configured to cut 2n welding tapes to form a plurality of welding tape groups, and separate the plurality of welding tape groups into a first welding tape group and a second welding tape group that are alternately arranged; When producing the second type of battery string, the solder strip feeding mechanism is configured to supply the solder strips on the 2nd to 2n+1th coils to the solder strip processing mechanism, and the solder strip processing mechanism is configured to cut 2n solder strips to form a plurality of solder strip groups, and separate the plurality of solder strip groups into a third solder strip group and a fourth solder strip group that are alternately arranged; The welding ribbon conveying mechanism is configured to pick up the multiple welding ribbon groups formed by the welding ribbon processing mechanism, convey the multiple welding ribbon groups to the welding conveying mechanism, and stack the multiple welding ribbon groups and the battery cells according to a predetermined rule to form the first battery string or the second battery string; The welding conveying mechanism conveys the stacked first type battery string or the second type 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.

2. The stringer according to claim 1, characterized in that: The welding strip processing mechanism includes a plurality of first welding strip clamping assemblies, a plurality of second welding strip clamping assemblies, a plurality of first welding strip cutting assemblies, a plurality of second welding strip cutting assemblies and welding strip spacing assemblies arranged along a first horizontal direction, wherein: A plurality of the first welding tape clamping assemblies are configured to cooperate with clamping the first welding tape group or the fourth welding tape group supplied by the welding tape feeding mechanism, each of the first welding tape slitting assemblies is located between two adjacent first welding tape clamping assemblies, and the plurality of the first welding tape slitting assemblies cooperate to slit each welding tape in the first welding tape group or the fourth welding tape group into a plurality of welding tape segments along a first horizontal direction, and each of the first welding tape clamping assemblies clamps a row of n welding tape segments arranged along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; A plurality of the second solder strip clamping assemblies are configured to cooperate with clamping the second solder strip group or the third solder strip group supplied by the solder strip feeding mechanism, each of the second solder strip slitting assemblies is located between two adjacent second solder strip clamping assemblies, and a plurality of the second solder strip slitting assemblies cooperate to slit each solder strip in the second solder strip group or the third solder strip group into a plurality of solder strip segments along a first horizontal direction, and each of the second solder strip clamping assemblies clamps a row of n solder strip segments arranged along a second horizontal direction; The welding ribbon spacing assembly is configured to drive each of the first welding ribbon clamping assembly and the second welding ribbon clamping assembly to move individually along the first horizontal direction to adjust the spacing between the several welding ribbon segments clamped by two adjacent first welding ribbon clamping assemblies and the spacing between the several welding ribbon segments clamped by two adjacent second welding ribbon clamping assemblies to match the cell spacing of the battery cell group.

3. The stringer according to claim 2, characterized in that: The first welding strip clamping assembly and the second welding strip clamping assembly have the same structure, and each of the first welding strip clamping assemblies includes a first clamping portion and a second clamping portion, the first clamping portion is used to clamp the head of the plurality of welding strip segments arranged in a row along the second horizontal direction, and the second clamping portion is used to clamp the tail of the plurality of welding strip segments arranged in a row along the second horizontal direction; The first clamping portion includes 2n+1 first clamping members arranged along a second horizontal direction, and the second clamping portion includes 2n+1 second clamping members arranged along a second horizontal direction, and the first clamping members and the second clamping members are used to cooperate and clamp the head and tail of a welding strip segment; When producing the first type of battery string, the 1st to 2nth first clamping members of the first clamping portion respectively clamp the 1st to 2nth welding strips supplied by the welding strip feeding mechanism, and the 1st to 2nth second clamping members of the second clamping portion respectively clamp the 1st to 2nth welding strips supplied by the welding strip feeding mechanism; When producing the second type of battery string, the 2nd to 2n+1st first clamping members of the first clamping part respectively clamp the 2nd to 2n+1st solder strips supplied by the solder strip feeding mechanism, and the 2nd to 2n+1st second clamping members of the second clamping part respectively clamp the 2nd to 2n+1st solder strips supplied by the solder strip feeding mechanism.

4. The stringer according to claim 3, characterized in that: The first clamping part and the second clamping part have the same structure. The first clamping part includes a first mounting seat, a fixed clamping plate, a movable clamping plate and a movable clamping plate driving member, wherein: The fixing clamping plate is fixedly mounted on the first mounting seat and placed along the second horizontal direction, and the top end of the fixing clamping plate forms a horizontal pressure-bearing surface; The movable clamping plate is slidably connected to the fixed clamping plate, and 2n+1 first clamping members are arranged at intervals on the top of the movable clamping plate along the second horizontal direction, and the first clamping members are located above the pressure-bearing surface; The movable clamping plate driving member is arranged on the first mounting seat and is in driving connection with the movable clamping plate, and the movable clamping plate driving member is configured to drive the movable clamping plate to slide relative to the fixed clamping plate, so as to realize the position switching of the movable clamping plate between the high position and the low position; When the movable clamp plate slides to a high position, a gap is formed between each of the first clamping members and the pressure-bearing surface for the welding strip to pass vertically; when the movable clamp plate slides to a low position, each of the first clamping members presses a corresponding welding strip onto the pressure-bearing surface.

5. The stringer according to claim 4, characterized in that: The first clamping portion further includes a first connecting column, the movable clamping plate is provided with a first guide hole, a first end of the first connecting column is fixedly connected to the fixed clamping plate, and a second end of the first connecting column is closely inserted into the first guide hole; A first guide path is formed in the first guide hole from top to bottom, the first guide path includes a first lifting section and a first offset section that are connected, the first lifting section is arranged in a vertical direction, the first offset section is arc-shaped, and the first clamping piece on the movable clamping plate presses the welding strip onto the pressure surface according to the first guide path of the first guide hole.

6. The stringer according to claim 2, characterized in that: The first welding strip cutting assembly and the second welding strip cutting assembly have the same structure. The first welding strip cutting assembly includes a second mounting seat, a fixed cutting knife, a movable knife seat and a movable knife seat driving member, wherein: The fixed cutter is fixedly arranged on the second mounting seat and extends along a second horizontal direction perpendicular to the first horizontal direction, and a fixed cutting blade is formed at the upper edge of the fixed cutter; The movable knife seat is slidably connected to the fixed cutting knife, and 2n+1 hook knives are arranged on the movable knife seat at intervals along the second horizontal direction, the hook knives are located above the fixed cutting blade, and a movable cutting blade is formed at the lower edge of the hook knife; The movable knife seat driving member is configured to drive the movable knife seat to slide relative to the fixed cutter, so as to realize the position switching of the movable knife seat between the high position and the low position; When the movable knife seat slides to the high position, gaps for the welding strip to pass through are formed between the movable cutting blades of the 2n+1 hook knives and the fixed cutting blade of the fixed cutter; when the movable knife seat slides to the low position, the movable cutting blades of the 2n+1 hook knives cooperate with the fixed cutting blade of the fixed cutter to cut off the welding strip passing between the two.

7. The stringer according to claim 6, characterized in that: The first welding ribbon cutting assembly further includes a second connecting column, the movable knife seat is provided with a second guide hole, the first end of the second connecting column is connected to the fixed cutter, and the second end of the second connecting column is inserted into the second guide hole; A second guide path is formed in the second guide hole from top to bottom in sequence, and the second guide path includes a connected second lifting section and a second offset section, the second lifting section is arranged in a vertical direction, and the second offset section is an arc shape, and the movable cutting blade of the hook knife cuts the welding strip according to the second guide path of the second guide hole.

8. The stringer according to claim 1, characterized in that: The welding strip processing mechanism comprises a base, a plurality of welding strip processing components and a spacing driving component, wherein: Several of the welding tape processing components are arranged on the base along the first horizontal direction; several of the welding tape processing components are configured to guide the welding tapes corresponding to the first welding tape group or the fourth welding tape group supplied by the welding tape feeding mechanism, clamp the remaining welding tapes at the same time, and cut each welding tape in the first welding tape group or the fourth welding tape group into a plurality of welding tape segments along the first horizontal direction to obtain a plurality of the first welding tape groups or the fourth welding tape groups; several of the welding tape processing components are also configured to guide the welding tapes corresponding to the second welding tape group or the third welding tape group supplied by the welding tape feeding mechanism, clamp the remaining welding tapes at the same time, and cut each welding tape in the second welding tape group or the third welding tape group into a plurality of welding tape segments along the first horizontal direction to obtain a plurality of the second welding tape groups or the third welding tape groups; The spacing drive component is arranged on the base, and the spacing drive component is configured to drive the plurality of the solder strip processing components to separate to both sides relative to the middle position of the base in the first horizontal direction, so as to adjust the first solder strip group and the second solder strip group along the first horizontal direction, or adjust the fourth solder strip group and the third solder strip group.

9. The stringer according to claim 8, characterized in that: The solder strip processing mechanism includes 2r solder strip processing components, and the 2r solder strip processing components are all slidably connected to the base. The spacing drive component includes r spacing drive members, wherein: The jth spacing driving member is used to drive the jth solder strip processing component and the 2r+1-jth solder strip processing component to move toward the middle of the base or to separate toward both sides; or, The solder strip processing mechanism includes 2r+1 solder strip processing components, the r+1 solder strip processing component is fixedly connected to the base, and the remaining 2r solder strip processing components are slidably connected to the base, and the spacing drive component includes r spacing drive members, wherein: The jth spacing driving member is used to drive the jth solder strip processing component and the 2r+2-jth solder strip processing component to move toward the middle of the base or to separate toward both sides; Among them, 1≤j≤r.

10. The stringer 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, so as to drive the synchronous belt to rotate; The jth welding strip processing assembly is fixedly connected to the first side belt body of the synchronous belt, and the 2r+1-jth welding strip processing assembly or the 2r+2-jth 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 jth welding strip processing component and the 2r+1-jth welding strip processing component or the 2r+2-jth welding strip processing component are driven to move toward the middle of the base or to separate toward both sides.

11. The stringer according to claim 9, characterized in that: Among the r spacing driving components, the j+1th spacing driving component drives the corresponding two welding strip processing components to separate to both sides before the jth spacing driving component.

12. The stringer according to claim 8, characterized in that: The base is also provided with a guide rail extending along the first horizontal direction, and a plurality of the welding strip processing components are slidably connected to the guide rail via a slider.

13. The stringer according to claim 8, characterized in that: The welding strip processing assembly comprises: a mounting bracket mounted on the base; Two clamping parts are arranged in pairs on the mounting bracket, and the two clamping parts are used to clamp one of all odd-numbered welding strips and all even-numbered welding strips from two different positions, and guide the other of all odd-numbered welding strips and all second even-numbered welding strips from two different positions; A cutting portion is arranged on the mounting bracket and located between the two clamping portions, and the cutting portion is used to cut off all welding strips guided by the clamping portions.

14. The stringer according to claim 13, characterized in that: The clamping part includes a pressure plate, a pressure plate and a pressure plate driving unit, wherein: The pressing plate is liftably mounted on the mounting bracket and is in transmission connection with the pressing plate driving unit arranged on the mounting bracket. A plurality of pressing heads are arranged on the top of the pressing plate along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. The pressure-bearing plate is fixedly mounted on the mounting bracket and extends along the second horizontal direction, a horizontal pressure-bearing surface is formed at the top of the pressure-bearing plate, and ejectors corresponding to all odd-numbered pressure heads or all even-numbered pressure heads among the plurality of pressure heads are arranged on the pressure-bearing surface, and the ejectors extend upward from the pressure-bearing surface; The pressure plate driving unit is used to drive the pressure plate to slide up and down relative to the pressure plate. When the pressure plate slides downward to a low position, all odd-numbered pressure heads among the multiple pressure heads clamp all odd-numbered welding strips among the multiple welding strips to the ejector pins one by one, and all even-numbered pressure heads among the multiple pressure heads guide all even-numbered welding strips among the multiple welding strips one by one, or, all even-numbered pressure heads among the multiple pressure heads clamp all even-numbered welding strips among the multiple welding strips to the ejector pins one by one, and all odd-numbered pressure heads among the multiple pressure heads guide all odd-numbered welding strips among the multiple welding strips one by one.

15. The stringer according to claim 14, characterized in that: The clamping portion also includes a guide comb arranged on the inner side of the pressure plate, and a plurality of guide grooves corresponding to the pressure heads are arranged on the guide comb at intervals along the second horizontal direction, and each of the guide grooves is used to guide one of the multiple welding strips.

16. The stringer according to claim 13, characterized in that: The cutting unit includes a fixed cutter, a movable cutter and a cutter driving unit, wherein: The fixed cutter is fixedly arranged on the mounting bracket and extends along the second horizontal direction, and a fixed blade is formed at the upper edge of the fixed cutter; The movable cutter is escalably mounted on the mounting bracket and is in driving connection with the cutter driving unit arranged on the mounting bracket. A plurality of hook knives are arranged side by side on the movable cutter along the second horizontal direction. The hook knives extend upward from the upper edge of the movable cutter, and a movable blade is formed at the lower edge of the hook knives. The cutter driving unit is used to drive the movable cutter to slide up and down. When the movable cutter slides upward to a high position, a gap is formed between the movable blade of each hook knife and the fixed blade of the fixed cutter for an odd-numbered welding strip or an even-numbered welding strip to pass through. When the movable cutter slides downward to a low position, each hook knife cooperates with the fixed cutter to cut off an odd-numbered welding strip or an even-numbered welding strip passing therebetween.

17. The stringer according to claim 1, characterized in that: The welding ribbon conveying mechanism comprises a moving mechanism, a mounting bracket, a plurality of clamping units and a clamping unit driving mechanism, wherein: The mounting bracket is connected to the driving end of the moving mechanism, the pressing unit driving mechanism is arranged on the mounting bracket, and the moving mechanism is configured to drive the mounting bracket to move; A plurality of the clamping units are sequentially arranged side by side on the mounting bracket along the first horizontal direction, and the clamping units are configured to clamp the two ends of the welding ribbon group up and down; The pressing unit driving mechanism is configured to drive the pressing unit to move closer to or away from an end of the welding ribbon group.

18. The stringer according to claim 17, characterized in that: The welding ribbon conveying mechanism includes m+1 clamping units, the first clamping unit located at the head includes at least a first clamping part, the m+1th clamping unit located at the tail includes at least a second clamping part, and the other clamping units all include a first clamping part and a second clamping part, wherein: The first pressing portion of the first pressing unit is configured to press the first end of the first welding ribbon group, and the second pressing portion of the (m+1)th pressing unit is configured to press the second end of the (m)th welding ribbon group; The second pressing part of the i-th pressing unit is configured to press the second end of the i-1-th welding ribbon group, and the first pressing part of the i-th pressing unit is configured to press the first end of the i-th welding ribbon group, wherein i is a natural number between 2 and m; The clamping unit driving mechanism is configured to drive each of the first clamping parts and each of the second clamping parts to move in opposite directions along the first horizontal direction, so that the two ends of each welding ribbon group are respectively inserted into the corresponding first clamping part and the second clamping part, and to move away from the welding ribbon group after the welding ribbon conveying mechanism lays the welding ribbon group at a specified position, and / or tightens the welding ribbon group after the first clamping part and the second clamping part clamp the welding ribbon group.

19. The stringer according to claim 18, characterized in that: The first pressing part and the second pressing part have the same structure. The first pressing part includes a connecting bracket, a fixed pressing plate, a movable pressing plate and a movable pressing plate driving member, wherein: The connecting bracket is linked to the movable part of the pressing unit driving mechanism; The fixed pressing plate is fixedly connected to the lower end of the connecting bracket, and 2n+1 bearing tongue plates are arranged side by side on the fixed pressing plate along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; A support plate is respectively extended upward from both ends of the bearing tongue plate, and the two support plates are respectively fixedly connected to the fixed pressing plate; The movable pressing plate is located above the fixed pressing plate, and 2n+1 pressing rods corresponding to the bearing tongue plates are arranged below the movable pressing plate, and the pressing rods are elastically connected to the movable pressing plate through elastic members, and each of the pressing rods passes through the fixed pressing plate and is located above the bearing tongue plate, and a gap between each of the pressing rods and the corresponding bearing tongue plate allows a welding strip to pass through; The movable pressing plate driving member is mounted on the connecting bracket and is in driving connection with the movable pressing plate, and the movable pressing plate driving member is configured to drive the movable pressing plate to move up and down relative to the fixed pressing plate; When the movable pressing plate moves upward to a high position, each pressing rod moves away from the corresponding bearing tongue plate, and when the first pressing portion moves toward the corresponding welding strip group, the end of each welding strip of the welding strip group enters into the gap between the corresponding bearing tongue plate and the pressing rod; When the movable pressing plate moves downward to a low position, each of the pressing rods presses the end of the welding strip tightly onto the bearing tongue plate.

20. The stringer according to claim 18, characterized in that: The pressing unit driving mechanism comprises a driving part, a first transmission part and a second transmission part, wherein: The driving unit is mounted on the mounting bracket; The first transmission part is connected to the first driving end of the driving part, and the first pressing part of each pressing unit is connected to the first transmission part; The second transmission part is connected to the second driving end of the driving part, and the second pressing part of each pressing unit is connected to the second transmission part; The driving part drives the first transmission part and the second transmission part to move in the opposite direction along the first horizontal direction, so as to drive each of the first pressing parts and each of the second pressing parts to move in the opposite direction along the first horizontal direction.

21. The stringer according to claim 1, characterized in that: The solder strip feeding mechanism further includes a solder strip pressing assembly, a solder strip cutting assembly and a solder strip pulling assembly which are sequentially arranged along a first horizontal direction, wherein: The 2n+1 material coil seats are located in the front process of the solder ribbon clamping assembly, and the 2n+1 material coil seats are configured to convey 2n+1 solder ribbons to the solder ribbon clamping assembly, and the solder ribbon clamping assembly is configured to individually clamp or loosen each solder ribbon conveyed by the material coil seats; The welding ribbon pulling assembly includes 2n+1 clamps, each of which is individually controlled by a driving member to clamp or loosen a welding ribbon, the welding ribbon pulling assembly is configured to pass through the welding ribbon cutting assembly along a first horizontal direction and clamp the first to 2n welding ribbons or the second to 2n+1 welding ribbons from the welding ribbon pressing assembly, the welding ribbon pressing assembly is configured to loosen the 2n welding ribbons clamped by the welding ribbon pulling assembly, and the welding ribbon pulling assembly is further configured to pull the clamped 2n welding ribbons along the first horizontal direction to a predetermined length and pass through the welding ribbon cutting assembly; The solder ribbon pressing assembly is further configured to press the 2n solder ribbons pulled out by the solder ribbon pulling assembly, the solder ribbon cutting assembly is further configured to cut the 2n solder ribbons, and the solder ribbon pulling assembly is further configured to supply the cut 2n solder ribbons to the solder ribbon processing mechanism.

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