Series welding machine

Abstract

The invention 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] This application relates to the field of solar cell manufacturing, specifically a string bonding machine. Background Technology

[0002] Interdigitated Back Contact (IBC) solar cells are solar cells with main grid lines printed only on the back of the cell. When connecting IBC cells in series, it is only necessary to connect the main grid lines on the back of adjacent IBC cells with solder ribbon.

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

[0004] Because the solder strips on strings A and B are arranged differently, in existing technology, strings A and B are typically produced separately by two string welding machines, and then sequentially transported to a stacking machine for photovoltaic module production. This production method results in higher production and maintenance costs for photovoltaic modules. Summary of the Invention

[0005] This application addresses the problem that existing stringing machines can only produce one type of battery string, and provides a stringing machine that can selectively produce two types of battery strings.

[0006] The technical solution of this application is as follows: A string welding machine can be used to produce a first type of battery string and a second type of battery string. The first type of battery string includes several battery cells, a first welding ribbon group covering the odd-numbered grid lines of the battery cells, and a second welding ribbon group covering the even-numbered grid lines of the battery cells. The second type of battery string includes several 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. The welding ribbon segment in the middle part of each column of welding ribbons is used to realize the electrical connection between two adjacent battery cells. The two ends of the first welding ribbon group protrude beyond the battery cells at the end of the first type of battery string, and the two ends of the fourth welding ribbon group protrude beyond the battery cells at the end of the second type of battery string.

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

[0008] The cell loading mechanism is used to pick up several IBC cells and transport the picked-up cells to the welding conveyor mechanism.

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

[0010] When producing the first type of battery string, the ribbon feeding mechanism is configured to supply the ribbons on the first to the 2nth rolls to the ribbon processing mechanism, which is configured to cut 2n ribbons to form multiple ribbon groups and to space the multiple ribbon groups to form alternating first ribbon groups and second ribbon groups.

[0011] When producing the second type of battery string, the ribbon feeding mechanism is configured to supply the ribbons on the 2nd to 2n+1th rolls to the ribbon processing mechanism, which is configured to cut 2n ribbons to form multiple ribbon groups, and then space the multiple ribbon groups to form an alternating third and fourth ribbon groups.

[0012] The ribbon handling mechanism is configured to pick up multiple ribbon groups formed by the ribbon handling mechanism, transport the multiple ribbon groups to the welding conveyor mechanism, and stack the multiple ribbon groups with the battery cells according to a predetermined rule to form a first type of battery string or a second type of battery string.

[0013] The welding conveyor transports the stacked first or second type of battery string to the welding station;

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

[0015] By configuring a ribbon feeding mechanism capable of carrying 2n+1 ribbon rolls and correspondingly configuring a ribbon processing mechanism that can selectively process 2n ribbons, this application enables the selective production of two types of battery strings on a single string welding machine. This eliminates the need to change the original production process or add additional steps, thereby saving on the production and maintenance costs of photovoltaic modules containing these two types of battery strings.

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

[0017] A plurality of first solder strip clamping assemblies are configured to cooperate with the clamping solder strip feeding mechanism to supply a first or fourth solder strip group. Each first solder strip slitting assembly is located between two adjacent first solder strip clamping assemblies. The plurality of first solder strip slitting assemblies cooperate to cut each solder strip in the first or fourth solder strip group into multiple solder strip segments along a first horizontal direction. Each first solder strip clamping assembly clamps a row of n solder strip segments arranged along a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction.

[0018] A plurality of second strip clamping assemblies are configured to cooperate with the clamping strip feeding mechanism to supply a second or third strip group. Each second strip cutting assembly is located between two adjacent second strip clamping assemblies. The plurality of second strip cutting assemblies cooperate to cut each strip in the second or third strip group into multiple strip segments along a first horizontal direction. Each second strip clamping assembly clamps a row of n strip segments arranged along a second horizontal direction.

[0019] The ribbon spacing assembly is configured to drive each of the first ribbon clamping assemblies and the second ribbon clamping assemblies to move individually along a first horizontal direction to adjust the spacing between several ribbon segments clamped by two adjacent first ribbon clamping assemblies and the spacing between several ribbon segments clamped by two adjacent second ribbon clamping assemblies, so as to match the spacing between the cells of the battery pack.

[0020] Through the cooperation of several first solder strip clamping assemblies, several second solder strip clamping assemblies, several first solder strip slitting assemblies, and several second solder strip slitting assemblies, the solder strip processing mechanism achieves the slitting of multiple solder strips to obtain several solder strip groups, and also achieves the spacing processing of the solder strip groups. That is, the solder strip processing mechanism achieves the supply of several staggered solder strip groups.

[0021] Optionally, the first and second welding strip clamping assemblies have the same structure. Each first welding strip clamping assembly includes a first clamping part and a second clamping part. The first clamping part is used to clamp the head of a row of multiple welding strip segments arranged in a second horizontal direction, and the second clamping part is used to clamp the tail of a row of multiple welding strip segments arranged in a 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. The first clamping members and the second clamping members are used to cooperate in clamping the head and tail of a welding strip segment.

[0023] When producing the first type of battery string, the first to 2n first clamping members of the first clamping part clamp the first to 2n welding strips supplied by the welding strip feeding mechanism, and the first to 2n second clamping members of the second clamping part clamp the first to 2n welding strips supplied by the welding strip feeding mechanism.

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

[0025] By configuring the first and second solder strip clamping assemblies, after the solder strips are segmented and cut, the head and tail of each first solder strip group are clamped in their respective first and second clamping parts, preventing the head and tail of the first solder strip group from sagging. Similarly, the head and tail of each second solder strip group are clamped in their respective first and second clamping parts.

[0026] Optionally, the first clamping part and the second clamping part have the same structure. The first clamping part includes a first mounting base, a fixed clamping plate, a movable clamping plate, and a movable clamping plate driving component, wherein:

[0027] The fixing clamp is fixedly installed on the first mounting base and placed along the second horizontal direction, and the top of the fixing clamp forms a horizontal bearing surface;

[0028] The movable clamping plate is slidably connected to the fixed clamping plate. The top of the movable clamping plate is provided with 2n+1 first clamping members at intervals along the second horizontal direction. The first clamping members are located above the pressure bearing surface.

[0029] The movable clamping plate drive is mounted on the first mounting base and is connected to the movable clamping plate in a transmission manner. The movable clamping plate drive 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.

[0030] When the movable clamping plate slides to the high position, a gap is formed between each of the first clamping members and the pressure bearing surface, allowing the welding strip to pass through vertically; when the movable clamping plate slides to the low position, each of the first clamping members presses a corresponding welding strip onto the pressure bearing surface.

[0031] The welding strip is pressed downwards onto the pressure-bearing surface of the fixed clamping plate by the first clamping member, which can ensure stable clamping of various types of 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 part further includes a first connecting post, a first guide hole is provided on the movable clamping plate, the first end of the first connecting post is fixedly connected to the fixed clamping plate, and the second end of the first connecting post is inserted into the first guide hole.

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

[0034] A movable clamping plate is slidably connected to a fixed clamping plate using a first connecting post and a first guide hole. When the movable clamping plate is driven by the movable clamping plate drive, the movable clamping plate slides relative to the fixed clamping plate. When the movable clamping plate slides upward, each clamping block moves to a high position, allowing the welding strip to pass between the first clamping member and the bearing surface. When the movable clamping plate 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 vertically oriented first lifting section and an arc-shaped first offset section, the first clamping member can slowly press the welding strip onto the bearing surface, preventing the first clamping member from instantly and rapidly pressing down to roll up the flat welding strip.

[0035] Optionally, the first and second strip slitting assemblies have the same structure. The first strip slitting assembly includes a second mounting base, a fixed cutter, a movable cutter holder, and a movable cutter holder drive, wherein:

[0036] The fixed cutter is fixedly mounted on the second mounting base and extends along the second horizontal direction perpendicular to the first horizontal direction. A fixed cutting blade is formed at the upper edge of the fixed cutter.

[0037] The movable blade holder is slidably connected to the fixed blade. 2n+1 hook blades are spaced apart along the second horizontal direction on the movable blade holder. The hook blades are located above the fixed cutting blade, and the movable cutting blade is formed at the lower edge of the hook blade.

[0038] The movable cutter head drive is configured to drive the movable cutter head to slide relative to the fixed cutter, so as to achieve the position switching of the movable cutter head between a high position and a low position;

[0039] When the movable cutter holder slides to the high position, gaps are formed between the movable cutting edges of the 2n+1 hook cutters and the fixed cutting edges of the fixed cutter for the welding strip to pass through; when the movable cutter holder slides to the low position, the movable cutting edges of the 2n+1 hook cutters and the fixed cutting edges of the fixed cutter cooperate to cut the welding strip passing between them.

[0040] When the first solder strip slitting assembly cuts all odd-numbered solder strips, it can avoid cutting even-numbered solder strips that do not need to be cut. Similarly, when the second solder strip slitting assembly cuts all even-numbered solder strips, it can avoid cutting odd-numbered solder strips that do not need to be cut. In addition, the hook knife can cut both round and flat solder strips, increasing the compatibility of the first and second solder strip slitting assemblies.

[0041] Optionally, the first strip cutting assembly further includes a second connecting post, a second guide hole is provided on the movable blade holder, the first end of the second connecting post is connected to the fixed cutter, and the second end of the second connecting post is inserted into the second guide hole.

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

[0043] The movable cutter holder is slidably connected to the fixed cutter using a second connecting post and a second guide hole. When the movable cutter holder is driven by the movable cutter holder drive, it slides relative to the fixed cutter. When the movable cutter holder slides upward, each hook cutter moves to a high position, allowing the welding strip to pass between the movable cutting edge of each hook cutter and the fixed cutting edge of the fixed cutter. When the movable cutter holder slides downward, each hook cutter cuts the corresponding welding strip. In particular, by configuring the second guide hole to include a vertically oriented second lifting section and an arc-shaped second offset section, the hook cutter can slowly cut the welding strip, preventing the hook cutter from instantly and rapidly pressing down to roll up the flat welding strip.

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

[0045] A plurality of solder strip processing components are disposed on a base along a first horizontal direction; the plurality of solder strip processing components are configured to guide the solder strips supplied by the solder strip feeding mechanism corresponding to a first solder strip group or a fourth solder strip group, while clamping the remaining solder strips, and cutting each solder strip in the first solder strip group or the fourth solder strip group into multiple solder strip segments along the first horizontal direction to obtain a plurality of first solder strip groups or fourth solder strip groups; the plurality of solder strip processing components are also configured to guide the solder strips supplied by the solder strip feeding mechanism corresponding to a second solder strip group or a third solder strip group, while clamping the remaining solder strips, and cutting each solder strip in the second solder strip group or the third solder strip group into multiple solder strip segments along the first horizontal direction to obtain a plurality of second solder strip groups or third solder strip groups;

[0046] The pitch drive assembly is mounted on the base and is configured to drive several ribbon processing assemblies to separate to both sides in a first horizontal direction relative to the middle position of the base, so as to adjust the first ribbon group and the second ribbon group, or adjust the fourth ribbon group and the third ribbon group, along the first horizontal direction.

[0047] By coordinating the ribbon processing assembly and the spacing drive assembly, multiple ribbons are staggered into a first ribbon group and a second ribbon group, or a fourth ribbon group and a third ribbon group. The first and second ribbon groups, or the fourth and third ribbon groups, are then adjusted along the ribbon extension direction to meet the arrangement requirements of the first and second ribbon groups, or the fourth and third ribbon groups, within the battery string. In this way, the subsequent ribbon handling mechanism can lay all the staggered and adjusted ribbon groups onto the arranged IBC battery cells in one go, significantly improving the production efficiency of the IBC battery string.

[0048] Optionally, the solder ribbon processing mechanism includes 2r solder ribbon processing components, all of which are slidably connected to the base. The spacing drive assembly includes r spacing drive members, wherein the j-th spacing drive member is used to drive the j-th solder ribbon processing component and the 2r+1-j-th solder ribbon processing component to move closer to the center of the base or to separate to both sides. Alternatively, the solder ribbon processing mechanism includes 2r+1 solder ribbon processing components, the r+1-th solder ribbon processing component is fixedly connected to the base, and the remaining 2r solder ribbon processing components are slidably connected to the base. The spacing drive assembly includes r spacing drive members, wherein the j-th spacing drive member is used to drive the j-th solder ribbon processing component and the 2r+2-j-th solder ribbon processing component to move closer to the center of the base or to 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 solder ribbon processing components to move in the opposite direction, ultimately causing 2r solder ribbon processing components or 2r+1 solder ribbon processing components to quickly separate to both sides or move closer to the center of the base, so as to complete the spacing adjustment of the first solder ribbon group and the second solder ribbon group.

[0050] Optionally, the pitch drive includes a drive pulley, a driven pulley, a timing belt, and a drive component, wherein: the drive pulley and the driven pulley are rotatably mounted on the base, the timing belt is fitted onto the drive pulley and the driven pulley along a first horizontal direction, and the drive component is used to drive the drive pulley to rotate, thereby driving the timing belt to rotate; the j-th welding strip processing assembly is fixedly connected to the first side of the timing belt, and the 2r+1-j-th welding strip processing assembly or the 2r+2-j-th welding strip processing assembly is fixedly connected to the second side of the timing belt; when the drive component drives the timing belt to rotate, it causes the j-th welding strip processing assembly and the 2r+1-j-th welding strip processing assembly or the 2r+2-j-th welding strip processing assembly to separate to both sides or move closer to the middle of the base.

[0051] A simple and stable split drive component is provided, which only requires one drive component to drive two corresponding solder 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 splitting drive components, the (j+1)th splitting drive component drives the corresponding two solder strip processing components to separate to both sides before the jth splitting drive component.

[0053] Of all the solder ribbon processing assemblies, the pair furthest from the center of the base is separated to the sides first. This prevents collision damage between adjacent pairs of solder ribbon processing assemblies and also prevents collision deformation at the ends of the freshly cut and unseparated solder ribbon groups.

[0054] Optionally, the base is also provided with a guide rail extending along a first horizontal direction, and several solder strip processing components are slidably connected to the guide rail via sliders.

[0055] By setting a guide rail extending along the first horizontal direction on the base, the solder strip processing component is slidably guided, preventing the solder strip processing component from deviating and causing the solder strip to shift position.

[0056] Optionally, the solder strip processing assembly includes: a mounting bracket mounted on a base; two pairs of clamping portions disposed 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; and a cutting portion disposed on the mounting bracket and located between the two clamping portions, the cutting portion being used to cut all solder strips guided by the clamping portions.

[0057] By configuring the solder strip processing assembly, the assembly can clamp one of all odd-numbered solder strips and all even-numbered solder strips from two different positions, guide the other of all odd-numbered solder strips and all second-even-numbered solder strips from two different positions, and cut off all guided solder strips.

[0058] Optionally, the clamping part includes a pressure plate, a pressure plate, and a pressure plate driving unit, wherein: the pressure plate is vertically mounted on the mounting bracket and is connected to the pressure plate driving unit mounted on the mounting bracket; the top of the pressure plate is provided with multiple pressure heads along a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction; the pressure plate is fixedly mounted on the mounting bracket and extends along the second horizontal direction; the top of the pressure plate forms a horizontal pressure-bearing surface; the pressure-bearing surface is provided with ejector pins corresponding one-to-one with all odd-numbered or even-numbered pressure heads among the multiple pressure heads, the ejector pins extending upwards out of the pressure-bearing surface; the pressure plate driving unit... The unit is used to drive the pressure plate to slide up and down relative to the bearing plate. When the pressure plate slides down to the low position, all the odd-numbered pressure heads of the multiple pressure heads clamp all the odd-numbered welding strips of the multiple welding strips onto the ejector pin in a one-to-one correspondence. All the even-numbered pressure heads of the multiple pressure heads guide all the even-numbered welding strips of the multiple welding strips in a one-to-one correspondence. Alternatively, all the even-numbered pressure heads of the multiple pressure heads clamp all the even-numbered welding strips of the multiple welding strips onto the ejector pin in a one-to-one correspondence. All the odd-numbered pressure heads of the multiple pressure heads guide all the odd-numbered welding strips of the multiple welding strips in a one-to-one correspondence.

[0059] By configuring the clamping part, it is possible to clamp one of the odd-numbered weld strips and one of the even-numbered weld strips in the multiple weld strips, while simultaneously guiding the other of the odd-numbered weld strips and one of the even-numbered weld strips in the multiple weld strips.

[0060] Optionally, the clamping part also includes a guide comb disposed on the inner side of the pressure plate. The guide comb is provided with a number of guide grooves that correspond one-to-one with the pressure head along the second horizontal direction. Each guide groove is used to guide one of the multiple welding strips.

[0061] By setting up guide combs, the welding strips are guided, ensuring that each welding strip passes under its corresponding pressure head.

[0062] Optionally, the cutting unit includes a fixed cutter, a movable cutter, and a cutter driving unit, wherein: the fixed cutter is fixedly mounted 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 vertically mounted on the mounting bracket and is connected to the cutter driving unit mounted on the mounting bracket, and a plurality of hooks are arranged side by side along the second horizontal direction on the movable cutter, the hooks extending upward beyond the upper edge of the movable cutter, and movable blades are formed at the lower edge of the hooks; the cutter driving unit is used to drive the movable cutter to slide up and down, when the movable cutter slides upward to the high position, a gap is formed between the movable blade of each hook and the fixed blade of the fixed cutter to allow one odd-numbered welding strip or one even-numbered welding strip to pass through, when the movable cutter slides downward to the low position, each hook cooperates with the fixed cutter to cut one odd-numbered welding strip or one even-numbered welding strip passing through the gap.

[0063] By configuring the cutting section, it is possible to cut one of the odd-numbered and even-numbered solder strips in a plurality of solder strips while simultaneously avoiding the other.

[0064] Optionally, the welding strip handling mechanism includes a moving mechanism, a mounting bracket, multiple clamping units, and a clamping unit drive mechanism, wherein:

[0065] The mounting bracket is connected to the drive end of the moving mechanism, the clamping unit drive mechanism is mounted on the mounting bracket, and the moving mechanism is configured to drive the mounting bracket to move.

[0066] Multiple clamping units are 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 strip assembly from the top and bottom.

[0067] The clamping unit drive mechanism is configured to drive the clamping unit toward or away from the end of the welding strip assembly.

[0068] The welding strip handling mechanism in this application uses a clamping unit to clamp the welding strip group by means of vertical clamping, so that the picked-up welding strip, especially the flat welding strip, will not flip over due to uneven force.

[0069] Optionally, the welding strip conveying mechanism includes m+1 clamping units, wherein the first clamping unit located at the beginning includes at least a first clamping part, the (m+1)th clamping unit located at the end includes at least a second clamping part, and the other clamping units all include a first clamping part and a second clamping part, wherein:

[0070] The first clamping part of the first clamping unit is configured to clamp the first end of the first welding strip group, and the second clamping part of the (m+1)th clamping unit is configured to clamp the second end of the m-th welding strip group;

[0071] The second clamping part of the i-th clamping unit is configured to clamp the second end of the (i-1)-th welding strip group, and the first clamping part of the i-th clamping unit is configured to clamp the first end of the i-th welding strip group, where i is a natural number from 2 to m;

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

[0073] By configuring the number and structure of the solder ribbon handling mechanism, it is possible to simultaneously transport m staggered solder ribbon groups at once, and to taut the solder ribbon groups during transport, thereby ensuring that the solder ribbon groups fall accurately to the designated positions. If m is set as the number of solder ribbon groups required for a string of IBC batteries, then a single transport can meet the solder ribbon laying requirements of a string of IBC batteries.

[0074] Optionally, the first pressing part and the second pressing part have the same structure. The first pressing part includes a connecting bracket, a fixed pressure plate, a movable pressure plate, and a movable pressure plate drive component, wherein:

[0075] The connecting bracket is linked to the movable part of the clamping unit drive mechanism;

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

[0077] Each end of the bearing tongue plate has an upwardly extending support plate, and the two support plates are fixedly connected to the fixed pressure plate respectively;

[0078] The movable pressure plate is located above the fixed pressure plate. Below the movable pressure plate are 2n+1 pressure rods that correspond one-to-one with the bearing tongue plate. The pressure rods are elastically connected to the movable pressure plate through elastic elements. Each pressure rod passes through the fixed pressure plate and is located above the bearing tongue plate. The gap between each pressure rod and the corresponding bearing tongue plate allows a welding strip to pass through.

[0079] The movable pressure plate drive is mounted on the connecting bracket and is connected to the movable pressure plate in a transmission manner. The movable pressure plate drive is configured to drive the movable pressure plate to move up and down relative to the fixed pressure plate.

[0080] When the movable pressure plate moves upward to the high position, each pressure bar moves away from the corresponding bearing tongue plate. When the first pressing part moves toward the corresponding welding strip group, the end of each welding strip in the welding strip group enters the gap between the corresponding bearing tongue plate and the pressure bar.

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

[0082] By configuring the first clamping part and the second clamping part, 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 the first clamping part or the second clamping part and be clamped by the first clamping part or the second clamping part.

[0083] Optionally, the clamping unit drive mechanism includes a drive unit, a first transmission unit, and a second transmission unit, wherein:

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

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

[0086] The second transmission unit is connected to the second drive end of the drive unit, and the second clamping part of each clamping unit is connected to the second transmission unit.

[0087] The drive unit drives the first transmission unit and the second transmission unit to move in opposite directions along the first horizontal direction, thereby causing each first pressing part and each second pressing part to move in opposite directions along the first horizontal direction.

[0088] Each strip assembly is clamped by two adjacent clamping units. One end of the strip assembly is clamped by the first clamping part of one clamping unit, and the other end of the strip assembly is clamped by the second clamping part of another clamping unit. The clamping unit drive mechanism is configured such that it can drive the first clamping parts and the second clamping parts of all clamping units to translate in opposite directions.

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

[0090] The 2n+1 material roll holders are located in the process preceding the strip clamping assembly. The 2n+1 material roll holders are configured to feed 2n+1 strips of welding to the strip clamping assembly. The strip clamping assembly is configured to individually clamp or release the strips fed from each material roll holder.

[0091] The welding strip traction assembly includes 2n+1 clamps, each clamp being individually controlled by a drive member to clamp or release a welding strip. The welding strip traction 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 clamping assembly. The welding strip clamping assembly is configured to release the 2n welding strips clamped by the welding strip traction assembly. The welding strip traction assembly is also configured to pull the clamped 2n welding strips out a predetermined length along the first horizontal direction and pass through the welding strip cutting assembly.

[0092] The welding strip clamping assembly is also configured to clamp the 2n welding strips pulled out by the welding strip traction assembly, the welding strip cutting assembly is also configured to cut the 2n welding strips, and the welding strip traction assembly is also configured to supply the cut 2n welding strips to the welding strip processing mechanism.

[0093] The welding strip is fed through the material roll holder. The welding strip on the material roll can be pulled out along the first horizontal direction by the traction of the welding strip traction component. The welding strip is pressed by the welding strip pressing component, which can prevent the welding strip from shifting after the welding strip traction component releases the welding strip. At the same time, it is also convenient for the welding strip traction component to pick up the welding strip from the welding strip pressing component again and pull out the welding strip. Attached Figure Description

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

[0095] Figure 2 for Figure 1 The diagram shows the structure of a battery string assembly composed of two different battery string arrangements.

[0096] Figure 3 This is a three-dimensional structural diagram of one optional embodiment of the present application;

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

[0098] Figure 5 This is a schematic diagram of the structure of the first embodiment of the welding strip processing mechanism in this application;

[0099] Figure 6 This is a schematic diagram of the first and second solder strip clamping assemblies in this application clamping the solder strip.

[0100] Figure 7 This is an assembly diagram of a first solder strip clamping assembly and a corresponding first solder strip cutting assembly in this application;

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

[0102] Figure 9 for Figure 8 A magnified view of region A in the image;

[0103] Figure 10 This is a schematic diagram of the structure of the first solder strip slitting assembly in this application;

[0104] Figure 11 This is a schematic diagram of the structure of a second embodiment of the solder strip processing mechanism in this application;

[0105] Figure 12 for Figure 11 A schematic diagram of the three-dimensional structure from another perspective;

[0106] Figure 13 for Figure 11 A structural schematic diagram from one perspective after omitting several solder strip processing components;

[0107] Figure 14 for Figure 11 A schematic diagram of the pitch drive component in the diagram;

[0108] Figure 15 for Figure 11A three-dimensional structural diagram of the solder strip processing component from one perspective;

[0109] Figure 16 for Figure 11 A three-dimensional structural diagram of the solder strip processing component from another perspective;

[0110] Figure 17 for Figure 11 A top view of the solder strip processing assembly.

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

[0112] Figure 19 for Figure 11 A schematic diagram of the cutting section in the middle;

[0113] Figure 20 This is a schematic diagram of the welding strip handling mechanism in this application;

[0114] Figure 21 This is a schematic diagram of the clamping unit drive mechanism and the assembly structure of the clamping unit in this application;

[0115] Figure 22 for Figure 21 A magnified view of a portion of the image;

[0116] Figure 23 This is a schematic diagram of the clamping unit in this application from one perspective;

[0117] Figure 24 This is a schematic diagram of the clamping unit in this application from another perspective;

[0118] Figure 25 This is a structural schematic diagram of the clamping unit in this application from another perspective;

[0119] Figure 26 This is a schematic diagram of the clamping unit in this application clamping the welding strip assembly.

[0120] Figures 1 to 26 Includes:

[0121] String welding machine 1;

[0122] The components include: a welding strip handling mechanism 10, a mounting bracket 11, a clamping unit 12, a first clamping part 13, a connecting bracket 131, a fixed pressure plate 132, a movable pressure plate 133, a movable pressure plate drive 134, a pressure-bearing tongue plate 135, a pressure rod 136, a second clamping part 14, a first mounting base 16, a guide rail 17, a clamping unit drive 15, a drive part 151, a first transmission part 152, and a second transmission part 153.

[0123] The welding strip processing mechanism includes: a first welding strip clamping assembly 21, a first clamping part 23, a first mounting base 231, a fixed clamping plate 232, a movable clamping plate 233, a movable clamping plate drive 234, a first connecting column 235, a first guide hole 236, a first clamping member 237, an elastic bearing member 238, a first lifting section 2361, a first offset section 2362, a second clamping part 24, a second welding strip clamping assembly 25, a first welding strip slitting assembly 26, a second mounting base 261, a fixed cutter 262, a movable cutter holder 263, a movable cutter holder drive 264, a second connecting column 265, a second guide hole 266, a hook cutter 267, a second welding strip slitting assembly 27, a welding strip spacing assembly 28, a first slide rail 281, a first drive 282, a second slide rail 283, and a second drive 284.

[0124] Welding conveyor mechanism 30;

[0125] 40-cell feeding mechanism;

[0126] 50, welding strip feeding mechanism, 51, welding strip pressing assembly, 52, welding strip cutting assembly, and 53;

[0127] Base 61, guide rail 611;

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

[0129] Pitch drive component 63, drive pulley 631, driven pulley 632, timing belt 633, drive component 634;

[0130] 100 welding strips, 101 solar cells;

[0131] The first type of battery string 110, the first welding strip group 111, and the second welding strip group 112;

[0132] The second type of battery string is 120, the third type of solder strip is 121, and the fourth type of solder strip is 122. Detailed Implementation

[0133] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0134] like Figure 3 As shown, this application discloses a string welding machine 1, which can be used to produce products such as... Figure 1 , Figure 2The first type of battery string 110 and the second type of battery string 120 are shown. Figure 3 The X-axis direction is the first horizontal direction, and the Y-axis direction is the second horizontal direction, which 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 solder ribbon group 111 covering the odd-numbered grid lines of the battery cells 101, and a second solder 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 solder ribbon group 121 covering the odd-numbered grid lines of the battery cells 101, and a fourth solder ribbon group 122 covering the even-numbered grid lines of the battery cells 101, wherein the battery cells 101 are IBC battery cells.

[0136] The first weld strip group 111, the second weld strip group 112, the third weld strip group 121, and the fourth weld strip group 122 each include n columns of weld strips ( Figure 1 , Figure 2 In the n=10 column, each column of solder ribbons is formed by m solder ribbon segments arranged at intervals. The middle solder ribbon segment in each column is used to achieve electrical connection between two adjacent battery cells 101. The two ends of the first solder ribbon group 111 protrude from the battery cells 101 at the end of the first type of battery string 110, and the two ends of the fourth solder ribbon group 122 protrude from the battery cells 101 at the end of the second type of battery string 120.

[0137] See also Figure 3 The string welding machine 1 includes a cell feeding mechanism 40, a welding strip feeding mechanism 50, a welding strip processing mechanism 20, a welding strip transport mechanism 10, a welding conveying mechanism 30, and a welding mechanism.

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

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

[0140] When producing the first type of battery string 110, the solder ribbon feeding mechanism 50 is configured to supply the solder ribbon on the first to the 2nth rolls to the solder ribbon processing mechanism 20. The solder ribbon processing mechanism 20 is configured to cut 2n solder ribbons to form multiple sets of solder ribbons, and to space the multiple sets of solder ribbons to form an alternating first set of solder ribbons 111 and a second set of solder ribbons 112.

[0141] When producing the second type of battery string 120, the ribbon feeding mechanism 50 is configured to supply the ribbon on the 2nd to 2n+1th rolls to the ribbon processing mechanism 20. The ribbon processing mechanism 20 is configured to cut 2n ribbons to form multiple ribbon groups, and to space the multiple ribbon groups to form an alternating third ribbon group 121 and a fourth ribbon group 122.

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

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

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

[0145] By configuring a solder ribbon feeding mechanism 50 capable of carrying 2n+1 solder ribbon rolls, and correspondingly configuring a solder ribbon processing mechanism 20 capable of selectively processing 2n of the solder ribbons, this application enables the selective production of two types of battery strings on a single string welding machine 1. This eliminates the need to change the original production process or add additional steps, thereby saving on the production and maintenance costs of photovoltaic modules containing the two types of battery strings.

[0146] The following is a detailed description of each component of the string welding machine 1.

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

[0148] like Figure 4 As shown, as an optional implementation, the welding strip feeding mechanism 50 further includes a welding strip pressing component 51, a welding strip cutting component 52, and a welding strip traction component 53 arranged sequentially along a first horizontal direction (X-axis direction in the figure).

[0149] Among them: 2n+1 material roll holders (not shown in the figure) are located in the preceding process of the welding strip pressing assembly 51. The 2n+1 material roll holders are configured to convey 2n+1 welding strips 100 to the welding strip pressing assembly 51. The welding strip pressing assembly 51 is configured to individually clamp or release each welding strip 100 conveyed by the material roll holder.

[0150] The welding strip traction assembly 53 includes 2n+1 clamps, each clamp being individually controlled by a drive member to clamp or release a welding strip 100. The welding strip traction assembly 53 is configured to pass through the welding strip cutting assembly 52 along a first horizontal direction and clamp the first to 2n welding strips 100 or the second to 2n+1 welding strips 100 from the welding strip clamping assembly 51. The welding strip clamping assembly 51 is configured to release the 2n welding strips 100 clamped by the welding strip traction assembly 53. The welding strip traction assembly 53 is also configured to pull the clamped 2n welding strips 100 out a predetermined length along the first horizontal direction and pass through the welding strip cutting assembly 52.

[0151] The welding strip pressing assembly 51 is also configured to press the 2n welding strips 100 pulled out by the welding strip traction assembly 53, the welding strip cutting assembly 52 is also configured to cut the 2n welding strips 100, and the welding strip traction assembly 53 is also configured to supply the cut 2n welding strips 100 to the welding strip processing mechanism 20.

[0152] The welding strip 100 is fed through the material roll holder. The welding strip 100 on the welding strip roll can be pulled out along the first horizontal direction by the traction of the welding strip traction component 53. The welding strip 100 pulled out is pressed by the welding strip pressing component 51, which can prevent the welding strip 100 from shifting after the welding strip traction component 53 releases the welding strip 100. At the same time, it is also convenient for the welding strip traction component 53 to clamp the welding strip 100 from the welding strip pressing component 51 again and pull out the welding strip 100.

[0153] In this embodiment of the welding strip feeding mechanism 50, the welding strip pressing assembly 51, the welding strip cutting assembly 52, and the welding strip traction assembly 53 can adopt any of the available structures in the prior art.

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

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

[0156] A plurality of second ribbon clamping assemblies 25 are configured to cooperate with the ribbon feeding mechanism 50 to clamp the second or third ribbon group supplied by the ribbon feeding mechanism 50. Each second ribbon slitting assembly 27 is located between two adjacent second ribbon clamping assemblies 25. The plurality of second ribbon slitting assemblies 27 cooperate to cut each ribbon in the second or third ribbon group into multiple ribbon segments along a first horizontal direction. Each second ribbon clamping assembly 25 clamps a row of n ribbon segments arranged along a second horizontal direction.

[0157] The ribbon spacing assembly 28 is configured to drive each of the first ribbon clamping assemblies 21 and the second ribbon clamping assemblies 25 to move individually along a first horizontal direction to adjust the spacing between several ribbon segments clamped by two adjacent first ribbon clamping assemblies 21 and the spacing between several ribbon segments clamped by two adjacent second ribbon clamping assemblies 25, so as to match the spacing between the cells of the battery pack.

[0158] Through the cooperation of several first solder strip clamping assemblies 21, several second solder strip clamping assemblies 25, several first solder strip slitting assemblies 26, and several second solder strip slitting assemblies 27, the solder strip processing mechanism 20 achieves the slitting of multiple solder strips to obtain several solder strip groups, and also achieves the spacing processing of the solder strip groups. That is, the solder strip processing mechanism 20 achieves the supply of several staggered solder strip groups.

[0159] like Figure 5 , Figure 7 As shown, optionally, the first solder strip clamping assembly 21 and the second solder strip clamping assembly 25 have the same structure. Each first solder strip clamping assembly 21 includes a first clamping part 23 and a second clamping part 24. The first clamping part 23 is used to clamp the head of a row of multiple solder strip segments arranged in a second horizontal direction, and the second clamping part 24 is used to clamp the tail of a row of multiple solder strip segments arranged in a second horizontal direction.

[0160] The first clamping part 23 includes 2n+1 first clamping members 237 arranged along the second horizontal direction, and the second clamping part 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 in clamping the head and tail of a welding strip segment.

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

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

[0163] By configuring the first solder strip clamping assembly 21 and the second solder strip clamping assembly 25, after the solder strip is segmented and cut, the head and tail of each first solder strip group or each fourth solder strip group are respectively clamped in the corresponding first clamping part 23 and second clamping part 24, preventing the head and tail of the first solder strip group or the fourth solder strip group from falling down. Similarly, the head and tail of each second solder strip group or each third solder strip group are respectively clamped in the corresponding first clamping part 23 and second clamping part 24.

[0164] The following is based on Figure 6 The working process and working principle of the welding strip processing mechanism 20 are illustrated by taking a specific embodiment as an example.

[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 provided between each two adjacent first solder strip clamping assemblies 21, and a second solder strip slitting assembly 27 is provided between each two adjacent second solder strip clamping assemblies 25.

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

[0167] First, the welding strip traction assembly 53 is used to pull multiple (17 as shown in the figure) welding strips extending along the first horizontal direction (X-axis direction as shown in the figure) onto the welding strip processing mechanism 20.

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

[0169] Next, the five first solder strip slitting components 26 and the five second solder strip slitting components 27 are controlled to simultaneously cut all odd-numbered solder strips and all even-numbered solder strips from their corresponding positions. This results in six first solder strip groups and six second solder strip groups. Each first solder strip group is clamped onto its corresponding first solder strip clamping component 21, and each second solder strip group is clamped onto its corresponding second solder strip clamping component 25.

[0170] Finally, the ribbon spacing assembly 28 controls the six first ribbon clamping assemblies 21 to translate and separate, thereby adjusting the spacing between the six first ribbon groups to a predetermined spacing. The ribbon spacing assembly 28 also controls the six second ribbon clamping assemblies 25 to translate and separate, thereby adjusting the spacing between the six second ribbon groups to a predetermined spacing.

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

[0172] Wherein: the fixing clamp 232 is fixedly installed on the first mounting base 231 and along a second horizontal direction perpendicular to the first horizontal direction (e.g., Figure 8 Extending along the Y-axis, the top of the fixed clamp 232 forms a horizontal bearing surface.

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

[0174] The movable clamping plate drive 234 is mounted on the first mounting base 231 and is connected to the movable clamping plate 233 in a transmission manner. The movable clamping plate drive 234 is configured to drive the movable clamping plate 233 to slide relative to the fixed clamping plate 232, so as to realize the position switching of the movable clamping plate 233 between the high position and the low position.

[0175] When the movable clamping plate 233 slides to the high position, a gap is formed between each of the first clamping members 237 and the pressure-bearing surface, allowing the welding strip to pass vertically. At this time, the welding strip is pulled onto the pressure-bearing surface, with a corresponding welding strip below each of the first clamping members 237.

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

[0177] The welding strip is pressed downwards onto the pressure-bearing surface of the fixed clamping plate 232 by the first clamping member 237 to clamp the welding strip. This ensures stable clamping of various types of welding strips, such as round and flat welding strips, and prevents the welding strip from flipping due to uneven force.

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

[0179] Continue to refer to Figure 8 and Figure 9 Optionally, the first clamping part 23 further includes a first connecting post 235. A first guide hole 236 is provided on the movable clamping plate 233. The first end of the first connecting post 235 is fixedly connected to the fixed clamping plate 232, and the second end of the first connecting post 235 is inserted into the first guide hole 236. Specifically, a first guide path is formed sequentially from top to bottom within the first guide hole 236. The first guide path includes a connected first lifting section 2361 and a first offset section 2362. The first lifting section 2361 is arranged vertically, 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 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 of the first clamping members 237 is located diagonally above the target pressing position (such as the position of the elastic bearing member 238), thereby achieving avoidance of the welding strip and ensuring that the welding strip can be smoothly pulled to the target pressing position.

[0181] When the movable clamping plate drive 234 drives the movable clamping plate 233 to slide towards the lower position, under the guidance of the first connecting post 235 and the first guide hole 236, the first clamping member 237 first descends vertically to contact the welding strip, and then descends at an angle. During this process, the welding strip is rubbed and pressed until it is pressed tightly on the bearing surface. In this way, the first clamping member 237 can be prevented from pressing down quickly and instantaneously, causing the welding strip, especially the flat welding strip, to be rolled and deformed.

[0182] like Figure 5 As shown, optionally, the first solder strip slitting assembly 26 and the second solder strip slitting assembly 27 have the same structure. Figure 10 As shown, taking the first strip slitting assembly 26 as an example, it includes a second mounting base 261, a fixed cutter 262, a movable cutter holder 263, and a movable cutter holder drive 264, wherein: the fixed cutter 262 is fixedly mounted on the second mounting base 261 and along a second horizontal direction perpendicular to the first horizontal direction (e.g., ...). Figure 10 Extending along the Y-axis, a fixed cutting blade is formed at the upper edge of the fixed cutter 262.

[0183] The movable blade holder 263 is slidably connected to the fixed blade 262. 2n+1 hook blades 267 are arranged at intervals along the second horizontal direction on the movable blade holder 263. The hook blades 267 are located above the movable blade holder 263, and a movable cutting blade is formed at the lower edge of the hook blades 267.

[0184] The movable cutter head drive 264 is configured to drive the movable cutter head 263 to slide relative to the fixed cutter 262, thereby enabling the movable cutter head 263 to switch between high and low positions.

[0185] When the movable cutter holder 263 slides to the high position, gaps are formed between the movable cutting edges of the 2n+1 hook cutters 267 and the fixed cutting edges of the fixed cutter 262, allowing the weld strip to pass through. When the movable cutter holder 263 slides to the low position, the movable cutting edges of the 2n+1 hook cutters 267 cooperate with the fixed cutting edges of the fixed cutter 262 to cut the weld strip passing between them.

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

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

[0188] Multiple welding strips are drawn onto the welding strip processing mechanism 20, wherein each of the movable cutting blades of each hook 267 and the fixed cutting blade of the fixed cutter 262 passes through a corresponding odd-numbered welding strip, while each of the even-numbered welding strips is located between adjacent hooks 267 or at a clearance position outside the hook 267.

[0189] After each of the first welding strip clamping components 21 of the welding strip processing mechanism 20 clamps all the odd-numbered welding strips, the movable knife holder 263 slides to the 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 the corresponding first odd-numbered welding strips passing between them.

[0190] The hook blades of the second strip cutting assembly 27 and the first strip cutting assembly 26 are offset in the second horizontal direction by a distance equal to the spacing between the strips. Therefore, the second strip cutting assembly 27 can cut all even-numbered strips of the multiple strips pulled to the strip processing mechanism 20, while avoiding odd-numbered strips during the cutting process.

[0191] By using a hook cutter as the cutting operation unit, 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, increasing the compatibility of the first solder strip cutting component 26 and the second solder strip cutting component 27.

[0192] Continue to refer to Figure 10 As shown, taking the first welding strip slitting assembly 26 as an example, it also includes a second connecting post 265. A second guide hole 266 is provided on the movable blade holder 263. The first end of the second connecting post 265 is connected to the fixed cutter 262, and the second end of the second connecting post 265 is inserted into the second guide hole 266. A second guide path is formed sequentially from top to bottom in the second guide hole 266. The second guide path includes a connected second lifting section and a second offset section. The second lifting section is set in the vertical direction, and the second offset section is arc-shaped. The movable cutting blade of the hook cutter cuts the welding strip according to the second guide path of the second guide hole 266.

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

[0194] When the movable tool holder drive 264 drives the movable tool holder 263 to slide towards the lower position, under the guidance of the second connecting post 265 and the second guide hole 266, the hook knife 267 first descends vertically to contact the welding strip, and then descends at an angle until it cuts the welding strip. In this way, the hook knife 267 can be prevented from cutting down quickly and pressing the flat welding strip.

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

[0196] Several first welding strip clamping assemblies 21 are connected to a first slide rail 281, and a first driving unit 282 is used to drive the several first welding strip clamping assemblies 21 to slide and separate along the first slide rail 281.

[0197] Several second welding strip clamping assemblies 25 are connected to the second slide rail 283, and the second driving part 284 is used to drive the several second welding strip clamping assemblies 25 to slide and separate along the second slide rail 283.

[0198] Optionally, among the plurality of first solder ribbon clamping assemblies 21, the first solder ribbon clamping assembly 21 located at the rearmost end is fixed on the first slide rail 281, and the remaining first solder ribbon clamping assemblies 21 are slidably connected to the first slide rail 281. The driving end of the first driving unit 282 is connected to the first solder ribbon clamping assembly 21 located at the frontmost end.

[0199] Adjacent first solder strip clamping assemblies 21 are connected by first connecting rods, 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 relative to the first solder strip clamping assembly 21 in a first horizontal direction. In this way, relative displacement can be achieved between adjacent first solder strip clamping assemblies 21.

[0200] Similarly, among the plurality of second solder ribbon clamping assemblies 25, the second solder ribbon clamping assembly 25 located at the rearmost end is fixed to the second slide rail 283, while the remaining second solder ribbon clamping assemblies 25 are slidably connected to the second slide rail 283. The drive end of the second drive unit 284 is connected to the second solder ribbon clamping assembly 25 located at the foremost end.

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

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

[0203] A plurality of solder strip processing components 62 are disposed on a base 61 along a first horizontal direction (X-axis direction in the figure). The plurality of solder strip processing components 62 are configured to guide the solder strips supplied by the solder strip feeding mechanism 50 corresponding to the first solder strip group 111 or the fourth solder strip group 122, while clamping the remaining solder strips, and cutting each solder strip in the first solder strip group 111 or the fourth solder strip group 122 into multiple solder strip segments along the first horizontal direction to obtain a plurality of first solder strip groups 111 or fourth solder strip groups 122; the plurality of solder strip processing components 62 are also configured to guide the solder strips supplied by the solder strip feeding mechanism 50 corresponding to the second solder strip group 112 or the third solder strip group 121, while clamping the remaining solder strips, and cutting each solder strip in the second solder strip group 112 or the third solder strip group 121 into multiple solder strip segments along the first horizontal direction to obtain a plurality of second solder strip groups 112 or third solder strip groups 121.

[0204] Through the cooperation of the solder ribbon processing component 62 and the spacing drive component, multiple solder ribbons are staggeredly cut into a first solder ribbon group 111 and a second solder ribbon group 112 or a fourth solder ribbon group 122 and a third solder ribbon group 121. The first solder ribbon group 111 and the second solder ribbon group 112 or the fourth solder ribbon group 122 and the third solder ribbon group 121 are adjusted along the extension direction of the solder ribbons to meet the arrangement requirements of the first solder ribbon group 111 and the second solder ribbon group 112 or the fourth solder ribbon group 122 and the third solder ribbon group 121 in the battery string. In this way, the subsequent solder ribbon transport mechanism 10 can lay all the staggered and adjusted solder ribbon groups onto the arranged IBC battery cells in one go, thereby significantly improving the production efficiency of the IBC battery string.

[0205] The following is a detailed explanation of the ribbon processing mechanism 20, taking the preparation of the first ribbon group 111 and the second ribbon group 112 as examples.

[0206] One of the optional settings is:

[0207] All odd-numbered solder strip processing assemblies 62 (as shown in the figures, the 1st, 3rd, 5th, 7th, 9th, 11th, and 13th) are configured to clamp all odd-numbered solder strips in a plurality of solder strips, and to guide all even-numbered solder strips in the plurality of solder strips. That is, all odd-numbered solder strips in the plurality of solder strips are clamped and fixed by the odd-numbered solder strip processing assembly 62 and cannot move relative to the odd-numbered solder strip processing assembly 62 in the first horizontal direction. Conversely, all even-numbered solder strips in the plurality of solder strips are not clamped and fixed by the odd-numbered solder strip processing assembly 62 and can move relative to the odd-numbered solder strip processing assembly 62 in the first horizontal direction; the odd-numbered solder strip processing assembly 62 only guides their movement.

[0208] Furthermore, each odd-numbered solder strip processing component 62 is also configured to cut all even-numbered solder strips at a corresponding location to obtain a plurality of second solder strip groups 112. That is, all even-numbered solder strips of the plurality of solder strips are divided into a plurality of second solder strip groups 112 by all odd-numbered solder strip processing components 62 of the plurality of solder strip processing components 62.

[0209] Correspondingly, all even-numbered solder strip processing components 62 (as shown in the figure, the 2nd, 4th, 6th, 8th, 10th, and 12th) of the plurality of solder strip processing components are configured to clamp all even-numbered solder strips of the plurality of solder strips, and are configured to guide all odd-numbered solder strips of the plurality of solder strips. That is, all even-numbered solder strips of the plurality of solder strips are clamped and fixed by the even-numbered solder strip processing components 62, and cannot move relative to the even-numbered solder strip processing components 62 in the first horizontal direction. On the other hand, all odd-numbered solder strips of the plurality of solder strips are not clamped and fixed by the even-numbered solder strip processing components 62, and can move relative to the even-numbered solder strip processing components 62 in the first horizontal direction, with the even-numbered solder strip processing components 62 only guiding their movement.

[0210] Furthermore, each even-numbered solder strip processing component 62 is also configured to cut all odd-numbered solder strips at a corresponding location to obtain several first solder strip groups 111. That is, all odd-numbered solder strips among the multiple solder strips are divided into several first solder strip groups 111 by all even-numbered solder strip processing components 62 among the several solder strip processing components 62.

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

[0212] The spacing drive assembly is mounted on the base 61. After all even-numbered and odd-numbered solder strips of the multiple solder strips are cut, the spacing drive assembly is configured to drive several solder strip processing assemblies 62 to separate to both sides in the first horizontal direction relative to the middle position of the base, so as to adjust the first solder strip group 111 and the second solder strip group 112 along the first horizontal direction, so that the spacing between the first solder strip group 111 and the spacing between the second solder strip group 112 meet the requirements for IBC battery stringing.

[0213] Since the ends of each first ribbon group 111 are guided by the adjacent even-numbered ribbon processing component 62 during movement, and the ends of each second ribbon group 112 are guided by the adjacent odd-numbered ribbon processing component 62 during movement, the ends of each first ribbon group 111 and second ribbon group 112 remain in the first horizontal direction and do not droop or tilt.

[0214] Another optional setting is:

[0215] All odd-numbered solder strip processing assemblies 62 (as shown in the figures, the 1st, 3rd, 5th, 7th, 9th, 11th, and 13th) are configured to clamp all even-numbered solder strips from a plurality of solder strips, and to guide all odd-numbered solder strips from the plurality of solder strips. That is, all even-numbered solder strips from the plurality of solder strips are clamped and fixed by the odd-numbered solder strip processing assembly 62 and cannot move relative to the odd-numbered solder strip processing assembly 62 in the first horizontal direction. Conversely, all odd-numbered solder strips from the plurality of solder strips are not clamped and fixed by the odd-numbered solder strip processing assembly 62 and can move relative to the odd-numbered solder strip processing assembly 62 in the first horizontal direction; the odd-numbered solder strip processing assembly 62 only guides their movement.

[0216] Furthermore, each odd-numbered solder strip processing component 62 is configured to cut all odd-numbered solder strips at a corresponding location to obtain several first solder strip groups 111. That is, all odd-numbered solder strips in the multiple solder strips are cut into several first solder strip groups 111 by all odd-numbered solder strip processing components 62.

[0217] Correspondingly, all even-numbered solder strip processing components 62 (as shown in the figure, the 2nd, 4th, 6th, 8th, 10th, and 12th) are configured to clamp all odd-numbered solder strips in a plurality of solder strips, and to guide all even-numbered solder strips in a plurality of solder strips. That is, all odd-numbered solder strips in a plurality of solder strips are clamped and fixed by the even-numbered solder strip processing components 62, and cannot move relative to the even-numbered solder strip processing components 62 in the first horizontal direction. Conversely, all even-numbered solder strips in a plurality of solder strips are not clamped and fixed by the even-numbered solder strip processing components 62, and can move relative to the even-numbered solder strip processing components 62 in the first horizontal direction; the even-numbered solder strip processing components 62 only guide their movement.

[0218] Furthermore, each even-numbered solder strip processing component 62 is configured to cut all even-numbered solder strips at a corresponding location to obtain several second solder strip groups 112. That is, all even-numbered solder strips in the multiple solder strips are divided into several second solder strip groups 112 by all even-numbered solder strip processing components 62.

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

[0220] The spacing drive assembly is mounted on the base 61. After all even-numbered and odd-numbered solder strips of the multiple solder strips are cut, the spacing drive assembly is configured to drive several solder strip processing assemblies 62 to separate to both sides in the first horizontal direction relative to the middle position of the base 61, so as to adjust the first solder strip group 111 and the second solder strip group 112 along the first horizontal direction, so that the spacing between the first solder strip group 111 and the spacing between the second solder strip group 112 meet the requirements for IBC battery stringing.

[0221] Since the ends of each first ribbon group 111 are guided by the adjacent odd-numbered ribbon processing component 62 during movement, and the ends of each second ribbon group 112 are guided by the adjacent even-numbered ribbon processing component 62 during movement, the ends of each first ribbon group 111 and second ribbon group 112 remain in the first horizontal direction and do not droop or tilt.

[0222] Optionally, the solder ribbon processing mechanism 20 in this embodiment includes 2r+1 solder ribbon processing components 62, i.e., the number of solder ribbon processing components 62 is odd. In this case, the (r+1)th solder ribbon processing component 62 (i.e., the solder ribbon processing component 62 located in the middle) can be fixedly connected to the base 61, and the remaining 2r solder ribbon processing components 62 are slidably connected to the base 61. The spacing drive assembly includes r spacing drive members 63. Wherein: the j-th spacing drive member is used to drive the j-th solder ribbon processing component and the 2r+2-j-th solder ribbon processing components to move towards the middle of the base or to separate to both sides, where 1≤j≤r.

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

[0224] The pitch drive assembly includes six pitch drive components 63, of which:

[0225] The first pitch drive is used to drive the first and thirteenth ribbon processing components 62 to move closer to the center of the base 61 (i.e., the position of the seventh ribbon processing component 62) or to separate to both sides.

[0226] The second split drive is used to drive the second and twelfth ribbon processing components 62 to move closer to the center of the base 61 or to separate to both sides.

[0227] The third pitch drive is used to drive the third and eleventh ribbon processing assemblies 62 to move closer to the center of the base 61 or to separate to the sides.

[0228] The fourth pitch drive is used to drive the fourth and tenth ribbon processing components 62 to move closer to the center of the base 61 or to separate to the sides.

[0229] The fifth pitch drive is used to drive the fifth and ninth ribbon processing components 62 toward the center of the base 61 or to separate them to the sides.

[0230] The sixth pitch drive is used to drive the sixth and eighth ribbon processing components 62 toward the center of the base 61 or to separate them to the sides.

[0231] Of course, the solder ribbon processing mechanism 20 in this embodiment may also include 2r solder ribbon processing components 62, that is, the number of solder ribbon processing components 62 is even. In this case, all 2r solder ribbon processing components 62 are slidably connected to the base 61. The pitch drive assembly includes r pitch drive members 63, wherein: the j-th pitch drive member 63 is used to drive the j-th solder ribbon processing component 62 and the 2r+1-j-th solder ribbon processing components to move closer to the center of the base or to separate to both sides.

[0232] For example, the ribbon processing mechanism 20 includes 12 ribbon processing components 62, i.e., r=6, and all 12 ribbon processing components 62 are slidably connected to the base 61.

[0233] The pitch drive assembly includes six pitch drive components 63, of which:

[0234] The first split drive is used to drive the first and twelfth ribbon processing components 62 to move closer to the center of the base plate 1 or to separate to both sides.

[0235] The second split drive is used to drive the second and eleventh ribbon processing components 62 to move closer to the center of the base plate 1 or to separate to both sides.

[0236] The third split drive is used to drive the third and tenth ribbon processing components 62 toward the center of the base plate 1 or to separate them to the sides.

[0237] The fourth split drive is used to drive the fourth and ninth ribbon processing components 62 toward the center of the base plate 1 or to separate them to the sides.

[0238] The fifth split drive is used to drive the fifth and eighth ribbon processing components 62 toward the center of the base plate 1 or to separate them to the sides.

[0239] The sixth split drive is used to drive the sixth and seventh ribbon processing components 62 toward the center of the base plate 1 or to separate them to the sides.

[0240] Optionally, the pitch drive 63 includes a drive pulley 631, a driven pulley 632, a timing belt 633, and a drive member 634. The drive pulley 631 and driven pulley 632 are rotatably mounted on the base 61. The timing belt 633 is fitted onto the drive pulley 631 and driven pulley 632 along a first horizontal direction. The drive member 634 drives the drive pulley 631 to rotate, thereby rotating the timing belt 633. The j-th ribbon processing assembly 62 is fixedly connected to the first side of the timing belt 633, and the 2r+1-j-th or 2r+2-j-th ribbon processing assembly 62 is fixedly connected to the second side of the timing belt 633. When the drive member 634 drives the timing belt 633 to rotate, it causes the j-th ribbon processing assembly 62 and the 2r+1-j-th or 2r+2-j-th ribbon processing assembly 62 to move closer to the center of the base or separate to both sides.

[0241] By using a synchronous belt drive, the two corresponding welding strip processing components 62 can be ensured to move in opposite directions at the same speed, so as to move closer to the center of the base 61 or separate to both sides. Compared with other transmission methods, the structure is simple, the cost is low, and it is easy to maintain.

[0242] Optionally, among the r splitting drive units 63, the j-th splitting drive unit 63 drives the corresponding solder strip processing assembly 62 to separate to both sides before the (j+1)-th splitting drive unit 63.

[0243] Still with Figures 11 to 13 Taking the solder ribbon processing mechanism 20 in this embodiment as an example, the fifth spacing drive 63 first drives the first and thirteenth solder ribbon processing components 62 to separate to both sides. The second spacing drive 63 drives the second and twelfth solder ribbon processing components 62 to separate to both sides. Then, the third, fourth, fifth, and sixth spacing drive 63 sequentially or simultaneously drive the corresponding two solder ribbon processing components 62 to separate to both sides at certain time intervals, thus completing the spacing adjustment of the first solder ribbon group 111 and the second solder ribbon group 112. It can be seen that the pair of solder ribbon processing components 62 furthest from the center of the base are driven first and move away from each other, and finally the pair of solder ribbon processing components 62 closest to the center of the base are driven and move away from each other.

[0244] By setting the driving sequence of the r spacing drive members 63 in this way, it can be ensured that each solder strip processing assembly 62 is not obstructed by its adjacent solder strip processing assembly 62 on the outside while it is separating to form a gap. This prevents collision deformation at the ends of the first solder strip group 111 and the second solder strip group 112.

[0245] like Figure 14As shown, optionally, the base 61 is also provided with at least one guide rail 611 extending along the first horizontal direction, and several solder strip processing components 3 are slidably connected to the guide rail 611 via sliders. The guide rail 611 realizes the sliding guidance of all solder strip processing components 62, preventing the solder strip processing components 62 from deviating and causing the solder strip to shift position.

[0246] like Figures 15 to 18 As shown, optionally, the solder strip processing assembly 62 includes: a mounting bracket 621 mounted on a base 61, two pairs of clamping portions 622 disposed on the mounting bracket 621, and a cutting portion 623 located between the two clamping portions 622, wherein: the two clamping portions 622 are 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. The cutting portion 623 is used to cut the odd-numbered solder strips or all second even-numbered solder strips guided by the clamping portion 623.

[0247] Optionally, the clamping part 622 includes a pressure plate 6221, a pressure plate 6222, and a pressure plate driving unit 6223, wherein: the pressure plate 6222 is vertically mounted on the mounting bracket 621 and is connected to the pressure plate driving unit 6223 mounted on the mounting bracket 621; the top of the pressure plate 6222 is provided with a plurality of pressure heads 6224 along the second horizontal direction (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-bearing surface is formed at the top of the pressure plate 6221. Ejector pins 6225 are provided on the pressure-bearing surface, each corresponding to one of the odd-numbered or even-numbered pressure heads 6224. The ejector pins 6225 extend upwards out of the pressure-bearing 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 of the multiple pressure heads 6224 clamp all odd-numbered weld strips of the multiple weld strips one by one onto the ejector pin 6225 to implement the clamping and fixing of all odd-numbered weld strips of the multiple weld strips. There is a gap between all even-numbered pressure heads 6224 of the multiple pressure heads 6224 and the pressure plate 6221. Therefore, all even-numbered pressure heads 6224 of the multiple pressure heads 6224 cannot clamp all even-numbered weld strips of the multiple weld strips. They can only guide all even-numbered weld strips of the multiple weld strips one by one.

[0251] Alternatively, all even-numbered pressure heads 6224 of the multiple pressure heads 6224 clamp all even-numbered weld strips of the multiple weld strips one-to-one onto the ejector pin 6225 to achieve clamping and fixing of all even-numbered weld strips of the multiple weld strips. There is a gap between all odd-numbered pressure heads 6224 of the multiple pressure heads 6224 and the pressure plate 6221. Therefore, all odd-numbered pressure heads 6224 of the multiple pressure heads 6224 cannot clamp all odd-numbered weld strips of the multiple weld strips; they can only guide all odd-numbered weld strips of the multiple weld strips one-to-one.

[0252] like Figure 16 As shown, optionally, the clamping part 622 also includes a guide comb 6226 disposed inside the pressure plate 6221. The guide comb 6226 is provided with a plurality of guide grooves 6227 corresponding one-to-one with the pressure head 6224 along the second horizontal direction. Each guide groove 6227 is used to guide one of the multiple welding strips to ensure that each welding strip passes under the corresponding pressure head 6224 and is finally pressed onto the pressure plate 6221 by the pressure head 6224, or guided by the pressure head 6224.

[0253] like Figure 19 As shown, optionally, the cutting unit 623 includes a fixed cutter 6231, a movable cutter 6232, and a cutter drive unit 6233, wherein: the fixed cutter 6231 is fixedly mounted 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 vertically mounted on the mounting bracket 621 and is connected to the cutter drive unit 6233 mounted on the mounting bracket 621. A plurality of hooks 6234 are arranged side by side along the second horizontal direction on the movable cutter 6232. The hooks 6234 extend upward beyond the upper edge of the movable cutter 6232, and a movable blade is formed at the lower edge of the hooks 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 up to the high position, a gap is formed between the movable blade of each hook 6234 and the fixed blade of the fixed cutter 6231, allowing one odd-numbered welding strip to pass through. Each even-numbered welding strip passes through the gap between adjacent hooks 6234.

[0255] When the movable cutter 6232 slides down to its low position, each hook cutter 6234 cooperates with the fixed cutter 6231 to cut the odd-numbered weld strips passing between them. That is, when the cutting part 623 cuts all the odd-numbered weld strips of the multiple weld strips, it avoids all the even-numbered weld strips of the multiple weld strips.

[0256] Alternatively, when the movable cutter 6232 slides upward to its high position, a gap is formed between the movable blades of each hook blade 6234 and the fixed blade of the fixed cutter 6231, allowing one even-numbered weld strip to pass through. Each odd-numbered weld strip passes between adjacent hook blades 6234. When the movable cutter 6232 slides downward to its low position, each hook blade 6234 cooperates with the fixed cutter 6231 to cut the even-numbered weld strip passing between them. That is, when the cutting unit 623 cuts all even-numbered weld strips from multiple weld strips, it avoids all odd-numbered weld strips from the multiple weld strips.

[0257] like Figure 20 , Figure 21 As shown, in one optional embodiment, the welding strip handling mechanism 10 includes a moving mechanism (not shown in the figure), a mounting bracket 11, multiple clamping units 12, and a clamping unit driving mechanism 15.

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

[0259] Multiple clamping units 12 are arranged along the first horizontal direction (e.g.) Figure 20 and Figure 21 The X-axis direction of the strips are arranged side by side on the mounting bracket 11, and the clamping unit 12 is configured to clamp the two ends of the welding strip assembly from top to bottom.

[0260] The clamping unit drive mechanism 15 is configured to drive the clamping unit 12 toward or away from the end of the welding strip assembly.

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

[0262] The moving mechanism first drives multiple clamping units 12 above the multiple sets of welding strips to be picked up;

[0263] Next, the moving mechanism drives multiple clamping units 12 to descend, so that each clamping unit 12 is located on the side of the end of the corresponding welding strip group;

[0264] Next, the clamping unit drive mechanism 15 drives each clamping unit 12 to translate toward the corresponding welding strip group, so that the ends of the welding strip group enter the corresponding clamping unit 12, and each clamping unit 12 then clamps the ends of the welding strip group from top to bottom.

[0265] Finally, the moving mechanism drives the multiple clamping units 12 holding the welding strip group to a designated position above it. Each clamping unit 12 releases the end of the welding strip group, and the clamping unit driving mechanism 15 then drives each clamping unit 12 to move away from the corresponding welding strip group, so that each welding strip group falls to the designated position after being released from the clamping unit 12.

[0266] As can be seen, the welding strip handling mechanism 10 in this application uses the clamping unit 12 to clamp the ends of the corresponding welding strip group by means of upper and lower clamping, which can ensure that the picked-up welding strip, especially the flat welding strip, will not flip over due to uneven force.

[0267] In this embodiment, the welding strip handling mechanism 10 includes m+1 clamping units, such as... Figure 22 As shown, except for the first clamping unit at the beginning and the (m+1)th clamping unit at the end, each of the remaining clamping units 12 includes a first clamping part 13 and a second clamping part 14. In each clamping unit 12, the first clamping part 13 and the second clamping part 14 are positioned in the same direction; for example, the first clamping part 13 is located on the left and the second clamping part 14 is located on the right.

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

[0269] Wherein: the first pressing part 13 of the first pressing unit 12 located at the beginning is configured to press the first end of the first welding strip group (such as the left end), and the second pressing part 14 of the (m+1)th pressing unit 12 located at the end is configured to press the second end of the mth welding strip group (such as the right end).

[0270] The second pressing part 14 of the i-th pressing unit 12 is configured to press the second end of the (i-1)-th welding strip group, and the first pressing part 13 of the i-th pressing unit is configured to press the first end of the i-th welding strip group, where i is a natural number from 2 to m.

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

[0272] By configuring the ribbon handling mechanism 10 as described above, each ribbon group is clamped by the first clamping part 13 and the second clamping part 14 of two adjacent clamping units 12. Thus, the ribbon handling mechanism 10 can simultaneously handle m staggered ribbon groups at once. If m is set as the number of ribbon groups required for a string of IBC batteries, then a single handling operation can meet the ribbon laying requirements for a string of IBC batteries.

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

[0274] As Figure 22 shown, optionally, the structures of the first pressing portion 13 and the second pressing portion 14 are the same. As Figures 23 to 25 shown, taking the first pressing portion 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 (such as Figure 23 and Figure 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 pressing rods 136 corresponding to the bearing tongue plates 135 are arranged. The pressing rods 136 are elastically connected to the movable pressing plate 133 through elastic members. Each pressing rod 136 passes through the fixed pressing plate 132 and is located above the bearing tongue plate 135. The gap between each pressing rod 136 and the corresponding bearing tongue plate 135 is for a solder ribbon 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 pressing rod 136 moves away from the corresponding bearing tongue plate 135. When the first pressing portion 13 moves towards the corresponding solder ribbon group, the end of each solder ribbon in the solder ribbon group enters the gap between the corresponding bearing tongue plate 135 and the pressing rod 136.

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

[0282] As can be seen, by making the above-mentioned arrangement of the first pressing part 13, when the first pressing 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 pressing part 13 and be clamped from top to bottom by the pressing rod 136 and the bearing tongue plate 135 of the first pressing part 13.

[0283] Since the second clamping part 14 moves in the opposite direction to the first clamping part 13, simultaneously, the other end of each welding strip in the welding strip group can enter the corresponding second clamping part 14 and be clamped from top to bottom by the pressure rod 136 and the bearing tongue 135 of the second clamping part 14.

[0284] Continue to refer to Figure 23 and Figure 24 As shown, optionally, the clamping unit 12 further includes a first mounting base 16 and a guide rail 17, wherein: the first mounting base 16 is connected to the mounting bracket 11, and the guide rail 17 is disposed on the first mounting base 16 along a first horizontal direction. The first clamping part 13 and / or the second clamping part 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 Figure 21 As shown, optionally, the clamping unit drive mechanism 15 includes two movable parts, which move in opposite directions in a first horizontal direction under the drive of the clamping unit drive mechanism 15. The first clamping part 13 of each clamping unit is connected to one movable part of the clamping unit drive mechanism 15, and the second clamping part 14 of each clamping unit is connected to the other movable part of the clamping unit drive mechanism 15. Thus, the first clamping part 13 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 simultaneously.

[0286] In other words, driven by the clamping unit drive mechanism 15, the first clamping part 13 and the second clamping part 14 used to clamp each welding strip group move in opposite directions in the first horizontal direction, thereby implementing the clamping and release of each welding strip group.

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

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

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

[0290] By configuring the clamping unit drive mechanism 15 as described above, the clamping unit drive mechanism 15 can drive the first clamping part 13 and the second clamping part 14 of all clamping units to translate in opposite directions. For the same weld strip group, when the corresponding first clamping part 13 and second clamping part 14 move closer to the center, the weld strip group is clamped; when they move apart to both sides, the weld strip group is tightened or released.

[0291] Optionally, the drive unit 151 includes a conveyor belt, a first transmission unit 152 connected to the upper side of the conveyor belt, and a second transmission unit 153 connected to the lower side of the conveyor belt. When the conveyor belt is in motion, it drives the first transmission unit 152 and the second transmission unit 153 to move in opposite directions.

[0292] The following is based on Figure 26 Taking a specific embodiment as an example, the structure and working principle of the welding strip handling mechanism 10 are described in detail by way of example.

[0293] Figure 26 In the embodiment shown, an IBC battery string contains 3 IBC battery cells (of course, in reality, an IBC battery string contains far more than 3 IBC battery cells). Therefore, laying out this IBC battery string requires 4 staggered groups of solder ribbons.

[0294] To facilitate the handling of four staggered welding strip groups, the welding strip handling mechanism 10 includes five clamping units. Among them:

[0295] The first pressing unit at the beginning only includes the first pressing part 13, the fifth pressing unit at the end only includes the second pressing part 14, and the second, third and fourth pressing units in between all include the first pressing part 13 and the second pressing part 14.

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

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

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

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

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

[0301] like Figure 3 , Figure 4 , Figure 5 and Figure 20 As shown, the following describes in detail the specific process flow for producing two types of battery strings using this application, taking an example where each solder strip group of each type of battery string includes 20 rows of solder strips.

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

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

[0304] It should be noted that the welding strip cutting component 52 in this application moves back and forth along the welding strip conveying direction. When the welding strip traction component 53 comes to pull the welding strip, the welding strip cutting component 52 retracts, causing the 21 welding strips to protrude from the welding strip cutting component 52, making it convenient for the welding strip traction component 53 to clamp the welding strip. The welding strip clamping component 51 preceding the welding strip cutting component 52 will release these 20 welding strips after the welding strip traction component 53 clamps them, making it convenient for the welding strip traction component 53 to pull the welding strip. At this time, the 21st welding strip is still in a state of being clamped by the welding strip clamping component 51, preventing the 21st welding strip from retracting.

[0305] (2) Welding strip slitting: After the clamping assembly at the welding strip processing station of the welding strip processing mechanism 20 clamps the welding strip, the slitting assembly slits each welding strip into one beginning welding strip, several middle welding strips, and one end welding strip (see reference). Figure 1 The number of solder strips and the number of battery cells are counted, and each solder strip is clamped by a clamping assembly.

[0306] It should be noted that each row of clamping components has 21 pre-set clamping parts, and the clamping parts work synchronously. At this time, the 21st clamping part is in an empty clamping state.

[0307] (3) Welding strip spacing: The spacing component drives each clamping component to move individually so that the spacing between each weld strip after slitting increases to the distance that meets the process requirements.

[0308] (4) Welding strip transfer: The welding strip handling mechanism 10 moves to the welding strip processing station to handle the 20 processed welding strip groups and then moves the welding strip groups to the string station.

[0309] It should be noted that the welding strip handling mechanism 10 also has 21 sets of clamping components. Therefore, 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 form a battery string, the welding strip transport mechanism 10 transports the welding strip group to the string assembly station and places the welding strip of the first column at the corresponding position on the battery cell.

[0311] It should be noted that, by Figure 1 It can be seen that the positions of the battery cells and the welding ribbon are different in the first type of battery string 110 and the second type of battery string 120. The welding ribbon transport mechanism 10 itself can move longitudinally (that is, the welding ribbon is transported to the string assembly station from a direction perpendicular to the length of the welding ribbon). Therefore, the position of the welding ribbon group can be adjusted by the welding ribbon transport mechanism 10 without changing the position of the battery cell group.

[0312] In addition, at the string assembly station, the cell assembly can be laid first, followed by the ribbon assembly; or the ribbon assembly can be laid first, followed by the cell assembly.

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

[0314] Similar to the production of the first type of battery string 110, except that in the production of the second type of battery string 120, the welding strip traction assembly 53 pulls out 20 welding strips from the 2nd to the 21st welding strip rolls.

[0315] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, and not by the above descriptions 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. The first type of battery string includes several battery cells, a first group of welding ribbons covering the odd-numbered grid lines of the battery cells, and a second group of welding ribbons covering the even-numbered grid lines of the battery cells. The second type of battery string includes several battery cells, a third group of welding ribbons covering the odd-numbered grid lines of the battery cells, and a fourth group of welding ribbons covering the even-numbered grid lines of the battery cells. The battery cells are IBC battery cells. The first group of welding ribbons, the second group of welding ribbons, the third group of welding ribbons, and the fourth group of welding ribbons each include n columns of welding ribbons. Each column of welding ribbons is formed by m welding ribbon segments arranged at intervals. The welding ribbon segment in the middle part of each column of welding ribbons is used to realize the electrical connection between two adjacent battery cells. The two ends of the first group of welding ribbons protrude beyond the battery cells at the end of the first type of battery string, and the two ends of the fourth group of welding ribbons protrude beyond the battery cells at the end of the second type of battery string. The string welding machine includes a cell feeding mechanism, a ribbon feeding mechanism, a ribbon processing mechanism, a ribbon handling mechanism, a welding conveying mechanism, and a welding mechanism; wherein: The cell loading mechanism is used to pick up several IBC cells and transport the picked-up cells to the welding conveying mechanism. The welding strip feeding mechanism includes 2n+1 coil holders for carrying welding strip coils; When producing the first type of battery string, the ribbon feeding mechanism is configured to supply the ribbon on the first to the 2nth rolls to the ribbon processing mechanism, and the ribbon processing mechanism is configured to cut 2n ribbons to form multiple ribbon groups, and to space the multiple ribbon groups to form an alternating first ribbon group and a second ribbon group. When producing the second type of battery string, the ribbon feeding mechanism is configured to supply the ribbons on the 2nd to 2n+1th rolls to the ribbon processing mechanism, which is configured to cut 2n ribbons to form multiple ribbon groups, and to space the multiple ribbon groups to form an alternating third ribbon group and a fourth ribbon group. The ribbon handling mechanism is configured to pick up the multiple ribbon groups formed by the ribbon processing mechanism, transport the multiple ribbon groups to the welding conveying mechanism, and stack the multiple ribbon groups with the battery cells according to a predetermined rule to form the first type of battery string or the second type of battery string. The welding conveying mechanism transports the stacked first type of battery string or the second type of battery string to the welding station; The welding mechanism is located at the welding station and is configured to weld the stacked first type of battery string or the second type of battery string into a battery string.

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

3. The string welding machine according to claim 2, characterized in that, The first and second welding strip clamping assemblies have the same structure. Each first welding strip clamping assembly includes a first clamping part and a second clamping part. The first clamping part is used to clamp the head of the multiple welding strip segments arranged in a row along the second horizontal direction, and the second clamping part is used to clamp the tail of the multiple welding strip segments arranged in a row along the second horizontal direction. 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. The first clamping members and the second clamping members are used to cooperate to clamp the head and tail of a welding strip segment. When producing the first type of battery string, the first to 2n first clamping members of the first clamping part clamp the first to 2n welding strips supplied by the welding strip feeding mechanism, and the first to 2n second clamping members of the second clamping part clamp the first to 2n welding strips supplied by the welding strip feeding mechanism. When producing the second type of battery string, the second to 2n+1 first clamping members of the first clamping part clamp the second to 2n+1 welding strips supplied by the welding strip feeding mechanism, and the second to 2n+1 second clamping members of the second clamping part clamp the second to 2n+1 welding strips supplied by the welding strip feeding mechanism.

4. The string welding machine 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 base, a fixed clamping plate, a movable clamping plate, and a movable clamping plate driving component, wherein: The fixing clamp is fixedly installed on the first mounting base and placed along the second horizontal direction, and the top of the fixing clamp forms a horizontal bearing surface; The movable clamping plate is slidably connected to the fixed clamping plate. The top of the movable clamping plate is provided with 2n+1 first clamping members at intervals along the second horizontal direction. The first clamping members are located above the pressure bearing surface. The movable clamping plate drive is disposed on the first mounting base and is connected to the movable clamping plate in a transmission manner. The movable clamping plate drive 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 a high position and a low position. When the movable clamping plate slides to the high position, a gap is formed between each of the first clamping members and the pressure bearing surface for the welding strip to pass through vertically; when the movable clamping plate slides to the low position, each of the first clamping members presses a corresponding welding strip onto the pressure bearing surface.

5. The string welding machine according to claim 4, characterized in that, The first clamping part further includes a first connecting post, and the movable clamping plate is provided with a first guide hole. The first end of the first connecting post is fixedly connected to the fixed clamping plate, and the second end of the first connecting post is inserted into the first guide hole. A first guide path is formed sequentially from top to bottom within the first guide hole. 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 member on the movable clamping plate presses the welding strip onto the bearing surface according to the first guide path of the first guide hole.

6. The string welding machine according to claim 2, characterized in that, The first and second solder strip slitting assemblies have the same structure. The first solder strip slitting assembly includes a second mounting base, a fixed cutter, a movable cutter holder, and a movable cutter holder drive component, wherein: The fixed cutter is fixedly mounted on the second mounting base and extends along a second horizontal direction perpendicular to the first horizontal direction. A fixed cutting blade is formed at the upper edge of the fixed cutter. The movable blade holder is slidably connected to the fixed blade. The movable blade holder is provided with 2n+1 hook blades spaced apart along the second horizontal direction. The hook blades are located above the fixed cutting blade, and the lower edge of the hook blades forms a movable cutting blade. The movable blade holder drive is configured to drive the movable blade holder to slide relative to the fixed cutter, so as to realize the position switching of the movable blade holder between a high position and a low position; When the movable blade holder slides to the high position, gaps are formed between the movable cutting blades of the 2n+1 hook blades and the fixed cutting blade of the fixed cutter for the welding strip to pass through; when the movable blade holder slides to the low position, the movable cutting blades of the 2n+1 hook blades and the fixed cutting blade of the fixed cutter cooperate to cut the welding strip passing between them.

7. The string welding machine according to claim 6, characterized in that, The first strip cutting assembly further includes a second connecting post. The movable blade holder is provided with a second guide hole. The first end of the second connecting post is connected to the fixed cutter, and the second end of the second connecting post is inserted into the second guide hole. A second guide path is formed sequentially from top to bottom within the second guide hole. The second guide path includes a connected second lifting section and a second offset section. The second lifting section is set in the vertical direction, and the second offset section is arc-shaped. The movable cutting blade of the hook cutter cuts the welding strip according to the second guide path of the second guide hole.

8. The string welding machine according to claim 1, characterized in that, The solder strip processing mechanism includes a base, several solder strip processing components, and a spacing drive component, wherein: A plurality of the aforementioned solder strip processing components are disposed on the base along a first horizontal direction; the plurality of the aforementioned solder strip processing components are configured to guide the solder strips supplied by the solder strip feeding mechanism corresponding to the first solder strip group or the fourth solder strip group, while clamping the remaining solder strips, and cutting each solder strip in the first solder strip group or the fourth solder strip group into multiple solder strip segments along the first horizontal direction to obtain a plurality of first solder strip groups or fourth solder strip groups; the plurality of the aforementioned solder strip processing components are further configured to guide the solder strips supplied by the solder strip feeding mechanism corresponding to the second solder strip group or the third solder strip group, while clamping the remaining solder strips, and cutting each solder strip in the second solder strip group or the third solder strip group into multiple solder strip segments along the first horizontal direction to obtain a plurality of second solder strip groups or third solder strip groups; The spacing drive assembly is disposed on the base and is configured to drive a plurality of the solder strip processing assemblies to separate to both sides in the first horizontal direction relative to the middle position of the base, so as to adjust the first solder strip group and the second solder strip group, or adjust the fourth solder strip group and the third solder strip group, along the first horizontal direction.

9. The string welding machine according to claim 8, characterized in that, The solder strip processing mechanism includes 2r solder strip processing components, all of which are slidably connected to the base. The pitch drive assembly includes r pitch drive members, wherein: The j-th spacing drive is used to drive the j-th solder strip processing assembly and the 2r+1-j-th solder strip processing assembly to move closer to the center of the base or to separate to both sides; or, The solder strip processing mechanism includes 2r+1 solder strip processing components, with the (r+1)th solder strip processing component fixedly connected to the base, and the remaining 2r solder strip processing components slidably connected to the base. The pitch drive assembly includes r pitch drive elements, wherein: The j-th spacing drive is used to drive the j-th ribbon processing assembly and the 2r+2-j-th ribbon processing assembly to move closer to the center of the base or to separate to both sides. Where 1≤j≤r.

10. The string welding machine according to claim 9, characterized in that, The pitch drive includes a driving pulley, a driven pulley, a timing belt, and a drive component, wherein: The driving pulley and the driven pulley are rotatably mounted on the base. The timing belt is fitted onto the driving pulley and the driven pulley along the first horizontal direction. The driving member is used to drive the driving pulley to rotate, thereby driving the timing belt to rotate. The j-th ribbon processing component is fixedly connected to the first side of the synchronous belt, and the 2r+1-j-th ribbon processing component or the 2r+2-j-th ribbon processing component is fixedly connected to the second side of the synchronous belt. When the driving component drives the synchronous belt to rotate, it causes the j-th ribbon processing component and the 2r+1-j-th ribbon processing component or the 2r+2-j-th ribbon processing component to move closer to the center of the base or separate to both sides.

11. The string welding machine according to claim 9, characterized in that, In the r-th spacing drive unit, the (j+1)th spacing drive unit drives the corresponding two solder strip processing components to separate to both sides before the j-th spacing drive unit.

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

13. The string welding machine according to claim 8, characterized in that, The solder strip processing assembly includes: Mounting bracket installed on the base; Two clamping portions are provided 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 section is disposed on the mounting bracket and located between the two clamping portions, the cutting section being used to cut off all the solder strips guided by the clamping portions.

14. The string welding machine 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 pressure plate is vertically mounted on the mounting bracket and is connected to the pressure plate drive unit mounted on the mounting bracket. The top of the pressure plate is provided with a plurality of pressure heads along the second horizontal direction, which is perpendicular to the first horizontal direction. The pressure plate is fixedly installed on the mounting bracket and extends along the second horizontal direction. A horizontal pressure-bearing surface is formed at the top of the pressure plate. A pin is provided on the pressure-bearing surface that corresponds one-to-one with all the odd-numbered or even-numbered pressure heads of the plurality of pressure heads. The pin extends upward out of the pressure-bearing surface. The pressure plate driving unit is used to drive the pressure plate to slide up and down relative to the bearing plate. When the pressure plate slides down to the low position, all the odd-numbered pressure heads of the plurality of pressure heads clamp all the odd-numbered welding strips of the plurality of welding strips onto the ejector pin in a one-to-one correspondence. All the even-numbered pressure heads of the plurality of pressure heads guide all the even-numbered welding strips of the plurality of welding strips in a one-to-one correspondence. Alternatively, all the even-numbered pressure heads of the plurality of pressure heads clamp all the even-numbered welding strips of the plurality of welding strips onto the ejector pin in a one-to-one correspondence. All the odd-numbered pressure heads of the plurality of pressure heads guide all the odd-numbered welding strips of the plurality of welding strips in a one-to-one correspondence.

15. The string welding machine according to claim 13, characterized in that, The clamping part also includes a guide comb disposed on the inner side of the pressure plate. The guide comb is provided with a plurality of guide grooves that correspond one-to-one with the pressure head along the second horizontal direction. Each guide groove is used to guide one of the multiple welding strips.

16. The string welding machine according to claim 13, characterized in that: The cutting section includes a fixed cutter, a movable cutter, and a cutter drive unit, wherein: The fixed cutter is fixedly mounted 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 vertically mounted on the mounting bracket and is connected to the cutter drive unit mounted on the mounting bracket. Several hooks are arranged side by side on the movable cutter along the second horizontal direction. The hooks extend upward from the upper edge of the movable cutter, and a movable blade is formed at the lower edge of the hooks. The cutting blade driving unit is used to drive the movable cutting blade to slide up and down. When the movable cutting blade slides up to the high position, a gap is formed between the movable blade of each hook blade and the fixed blade of the fixed cutting blade to allow one odd-numbered welding strip or one even-numbered welding strip to pass through. When the movable cutting blade slides down to the low position, each hook blade cooperates with the fixed cutting blade to cut off one odd-numbered welding strip or one even-numbered welding strip passing through the gap.

17. The string welding machine according to claim 1, characterized in that, The welding strip handling mechanism includes a moving mechanism, a mounting bracket, multiple clamping units, and a clamping unit drive mechanism, wherein: The mounting bracket is connected to the drive end of the moving mechanism, the clamping unit drive mechanism is disposed on the mounting bracket, and the moving mechanism is configured to drive the mounting bracket to move. Multiple clamping units are arranged side by side along the first horizontal direction on the mounting bracket, and the clamping units are configured to clamp the two ends of the welding strip assembly from the top and bottom. The clamping unit drive mechanism is configured to drive the clamping unit toward or away from the end of the welding strip assembly.

18. The string welding machine according to claim 17, characterized in that, The welding strip handling mechanism includes m+1 clamping units. The first clamping unit at the beginning includes at least a first clamping part, and the (m+1)th clamping unit at the end includes at least a second clamping part. All other clamping units include both a first clamping part and a second clamping part. The first clamping part of the first clamping unit is configured to clamp the first end of the first welding strip group, and the second clamping part of the (m+1)th clamping unit is configured to clamp the second end of the mth welding strip group; The second clamping part of the i-th clamping unit is configured to clamp the second end of the (i-1)-th welding strip group, and the first clamping part of the i-th clamping unit is configured to clamp the first end of the i-th welding strip group, where i is a natural number from 2 to m; The clamping unit drive 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 strip group are respectively inserted into the corresponding first clamping part and the second clamping part, and to move away from the welding strip group after the welding strip transport mechanism lays the welding strip group in the designated position, and / or to tighten the welding strip group after the first clamping part and the second clamping part clamp the welding strip group.

19. The string welding machine according to claim 18, characterized in that, The first and second pressing parts have the same structure. The first pressing part includes a connecting bracket, a fixed pressure plate, a movable pressure plate, and a movable pressure plate driving component, wherein: The connecting bracket is linked to the movable part of the clamping unit drive mechanism; The fixed pressure plate is fixedly connected to the lower end of the connecting bracket. 2n+1 bearing tongues are arranged side by side on the fixed pressure plate along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. Each end of the bearing tongue plate extends upward with a support plate, and the two support plates are respectively fixedly connected to the fixed pressure plate; The movable pressure plate is located above the fixed pressure plate. Below the movable pressure plate are 2n+1 pressure rods that correspond one-to-one with the bearing tongue plate. The pressure rods are elastically connected to the movable pressure plate through elastic elements. Each pressure rod passes through the fixed pressure plate and is located above the bearing tongue plate. The gap between each pressure rod and the corresponding bearing tongue plate allows a welding strip to pass through. The movable pressure plate drive is mounted on the connecting bracket and is connected to the movable pressure plate in a transmission manner. The movable pressure plate drive is configured to drive the movable pressure plate to move up and down relative to the fixed pressure plate. When the movable pressure plate moves upward to the high position, each pressure bar moves away from the corresponding bearing tongue plate. When the first pressing part moves toward the corresponding welding strip group, the end of each welding strip in the welding strip group enters the gap between the corresponding bearing tongue plate and the pressure bar. When the movable pressure plate moves downward to the low position, each of the pressure rods presses the end of the welding strip against the bearing tongue plate.

20. The string welding machine according to claim 18, characterized in that, The clamping unit drive mechanism includes a drive unit, a first transmission unit, and a second transmission unit, wherein: The drive unit is mounted on the mounting bracket; The first transmission unit is connected to the first driving end of the driving unit, and the first pressing part of each pressing unit is connected to the first transmission unit; 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 unit drives the first transmission unit and the second transmission unit to move in the opposite direction along the first horizontal direction, thereby causing 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 string welding machine according to claim 1, characterized in that, The welding strip feeding mechanism further includes a welding strip pressing assembly, a welding strip cutting assembly, and a welding strip traction assembly arranged sequentially along the first horizontal direction, wherein: The 2n+1 material coil holders are located in the preceding process of the welding strip pressing assembly. The 2n+1 material coil holders are configured to convey 2n+1 welding strips to the welding strip pressing assembly. The welding strip pressing assembly is configured to individually clamp or release each welding strip conveyed by the material coil holder. The welding strip traction assembly includes 2n+1 clamps, each of which is individually controlled by a drive member to clamp or release a welding strip. The welding strip traction 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 clamping assembly. The welding strip clamping assembly is configured to release the 2n welding strips clamped by the welding strip traction assembly. The welding strip traction assembly is also configured to pull the clamped 2n welding strips out a predetermined length along the first horizontal direction and pass through the welding strip cutting assembly. The welding strip pressing assembly is further configured to press the 2n welding strips pulled out by the welding strip traction assembly, the welding strip cutting assembly is further configured to cut the 2n welding strips, and the welding strip traction assembly is further configured to supply the cut 2n welding strips to the welding strip processing mechanism.

Images