A double-knife type string separating device and method for a stringer

Abstract

The application relates to a double-knife type string separating device and method of a string welding machine, and belongs to the technical field of auxiliary devices for photovoltaic modules. The double-knife type string separating device of the string welding machine solves the problem that the existing battery string separating device cannot meet the production requirements of double-glass photovoltaic modules. The double-knife type string separating device of the string welding machine comprises a first string separating knife mechanism, a second string separating knife mechanism and a staggered air cylinder mechanism, the staggered air cylinder mechanism, the first string separating knife mechanism and the second string separating knife mechanism are sequentially connected, and the first string separating knife mechanism and the second string separating knife mechanism can be moved under the driving of the staggered air cylinder mechanism. The first string separating knife mechanism and the second string separating knife mechanism can independently act or simultaneously act, and the length of the cut welding strip head meets the requirements.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module auxiliary equipment technology, and in particular to a double-blade string splitting device and string splitting method for a string welding machine. Background Technology

[0002] Photovoltaic modules typically consist of several solar cells connected in series with interconnecting sheets. The interconnecting sheets of adjacent solar cells are individually connected by solder ribbons. After connecting multiple interconnecting sheets of solar cells in series using solder ribbons, the stringer needs to divide the cell string into solar cell arrays composed of a certain number of interconnecting sheets.

[0003] As the industrialization of solar cells progresses, the market demands increasingly higher efficiency and quality from solar cells, making double-glass photovoltaic modules more and more popular.

[0004] In traditional battery string splitting, the solder strip lengths at both ends of the battery string are equal. However, in the production of double-glass photovoltaic modules, the solder strip lengths on both sides of the battery string must be different, which makes the traditional battery string splitting device unable to meet the production requirements of double-glass photovoltaic modules.

[0005] Existing solutions mostly involve replacing the cylinder control system on the battery string splitting device with a servo control system. The servo control system controls the position of the string splitting blade. This technology requires the addition of a servo control motor, servo drive lead screw, etc., which increases the number of transmission components, affecting the service life of the equipment, and also increases the modification cost. Summary of the Invention

[0006] Based on the above analysis, the present invention aims to provide a double-blade string splitting device and string splitting method for a string welding machine, so as to solve the problem that existing battery string splitting devices cannot meet the production requirements of double-glass photovoltaic modules.

[0007] The objective of this invention is mainly achieved through the following technical solutions:

[0008] A double-blade string splitting device for a string welding machine includes a first string splitting blade mechanism, a second string splitting blade mechanism, and a misalignment cylinder mechanism. The misalignment cylinder mechanism, the first string splitting blade mechanism, and the second string splitting blade mechanism are connected in sequence, and the first string splitting blade mechanism and the second string splitting blade mechanism can move under the drive of the misalignment cylinder mechanism.

[0009] Furthermore, it also includes a base, and the first splitting knife mechanism includes an upper cutter, a lower cutter, and a mounting bracket, wherein the upper cutter and the lower cutter are fixed on the base by the mounting bracket;

[0010] The second split-cutting mechanism has the same structure as the first split-cutting mechanism.

[0011] Furthermore, the mounting bracket includes a movable base plate, two side upright plates, and a top plate. The movable base plate, the two side upright plates, and the top plate form a frame structure, and the upper cutter and the lower cutter are installed inside the frame.

[0012] Furthermore, the lower cutter is fixedly connected to the side panel via a lower cutter bracket, and the upper cutter is slidably connected to the side panel via an upper cutter bracket.

[0013] Furthermore, the upper cutter bracket is connected to the side upright plate via a lifting guide rail and a lifting slider.

[0014] Furthermore, it also includes an upper cutting cylinder, which is fixed to the top plate. The cylinder head of the upper cutting cylinder passes through the top plate and is fixedly connected to the upper cutting cylinder connecting plate. The upper cutting cylinder connecting plate is fixed to the upper cutting support.

[0015] Furthermore, the first and second split-cutting knife mechanisms are connected by a connecting block.

[0016] Furthermore, the base is provided with a translation guide rail, which is mounted on the base plate.

[0017] Furthermore, the misaligned cylinder mechanism includes a misaligned cylinder, the cylinder head of which is fixedly connected to the movable base plate of the first splitting knife mechanism.

[0018] A string splitting method, using the double-blade string splitting device of the string welding machine described in the above technical solution, when producing double-glass photovoltaic modules, includes the following steps when producing string A first and then string B:

[0019] Step 1: The first splitting knife mechanism operates to cut out the length of the welding strip at the head of string A;

[0020] Step 2: The misalignment cylinder actuates, and the first and second split-cutting mechanisms move together a certain distance in the direction of the misalignment cylinder;

[0021] Step 3: The first and second splitting blade mechanisms operate simultaneously to cut off a portion of the solder strip located between the first and second splitting blade mechanisms, and simultaneously cut off the length of the tail solder strip of string A and the length of the head solder strip of string B.

[0022] Step 4: The first and second splitting blade mechanisms are reset, and the first splitting blade mechanism is activated to cut out the length of the tail solder strip of the B string and the length of the head solder strip of the next A string.

[0023] This invention can achieve at least one of the following beneficial effects:

[0024] (1) The double-blade splitting device of the string welding machine of the present invention is provided with a first splitting blade mechanism and a second splitting blade mechanism. The first splitting blade mechanism and the second splitting blade mechanism can operate independently or simultaneously to cut the welding strip head length that meets the requirements.

[0025] (2) The first and second splitting knife mechanisms of the double-blade splitting device of the string welding machine of the present invention can move relative to each other and adjust the distance between the two sets of splitting knives, so that the double-blade splitting device of the string welding machine of the present invention can meet the requirements of different welding strip lengths.

[0026] (3) The double-blade stringing device of the stringing machine of the present invention is provided with a translation guide rod. The translation guide rod passes through the movable base plate of the mounting bracket. On the one hand, it fixes the first stringing blade mechanism and the second stringing blade mechanism on the base. On the other hand, it provides guidance for the movement of the first stringing blade mechanism and the second stringing blade mechanism, ensuring the accuracy of the movement.

[0027] (4) The double-blade splitting device of the string welding machine of the present invention is provided with a limiting block. The limiting block is sleeved on the translation guide rod and locked relative to the translation guide rail by fasteners, so that the limiting block can be fixed relative to the translation guide rail. When it is necessary to change the moving distance of the first splitting blade mechanism and the second splitting blade mechanism, the fasteners can be loosened to change the relative position of the limiting block on the translation guide rail.

[0028] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0029] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0030] Figure 1 This is a schematic diagram of the structure of the double-blade string splitting device for a string welding machine according to an embodiment of the present invention. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the structure of the double-blade string splitting device for a string welding machine according to an embodiment of the present invention. Figure 2 ;

[0032] Figure 3 This is an exploded view of the double-blade string splitting device of the string welding machine according to an embodiment of the present invention.

[0033] Figure label:

[0034] 1-First split-running knife mechanism, 11-Upper cutter, 111-Upper cutter bracket, 112-Upper cutter holder slider seat, 12-Lower cutter, 121-Lower cutter bracket, 13-Moving base plate, 14-Side upright plate, 15-Top plate, 16-Upper cutter cylinder, 17-Upper cutter cylinder connecting plate, 2-Second split-running knife mechanism, 3-Base, 31-Base plate, 32-Transfer guide rail, 33-Transfer slider, 34-Transfer guide rod, 4-Offset cylinder, 41-Offset cylinder fixing plate, 42-Locking screw, 5-Lifting guide rail, 6-Lifting slider, 7-Connecting block, 8-Limiting block, 9-Conveyor pulley. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0036] Example 1

[0037] One embodiment of the present invention, such as Figures 1 to 3 As shown, a double-blade string splitting device (hereinafter referred to as "string splitting device") for a string welding machine is disclosed, including a first string splitting blade mechanism 1, a second string splitting blade mechanism 2, a base 3, and a misalignment cylinder mechanism. The first string splitting blade mechanism 1, the second string splitting blade mechanism 2, and the misalignment cylinder mechanism are mounted on the base 3. The misalignment cylinder mechanism is connected to the first string splitting blade mechanism 1 and the second string splitting blade mechanism 2. The misalignment cylinder mechanism can push the first string splitting blade mechanism 1 and the second string splitting blade mechanism 2 to move along the base 3.

[0038] In this embodiment, by controlling the first splitting blade mechanism 1 or the second splitting blade mechanism 2 to operate individually, or by controlling the first splitting blade mechanism 1 and the second splitting blade mechanism 2 to operate simultaneously, the required length of the welding strip can be cut.

[0039] In this embodiment, the structure of the first splitting blade mechanism 1 is the same as that of the second splitting blade mechanism 2. The first splitting blade mechanism 1 includes an upper cutting blade 11, a lower cutting blade 12, and a mounting bracket. The upper cutting blade 11 and the lower cutting blade 12 are fixed to the base 3 by the mounting bracket.

[0040] Furthermore, the upper cutter 11 can move up and down relative to the mounting bracket, while the lower cutter 12 is fixed relative to the mounting bracket. The upper cutter 11 and the lower cutter 12 cooperate with each other to cut the welding strip located between the upper cutter 11 and the lower cutter 12.

[0041] Furthermore, the mounting bracket includes a movable base plate 13, two side upright plates 14 and a top plate 15. The movable base plate 13, the two side upright plates 14 and the top plate 15 form a frame structure, and the upper cutter 11 and the lower cutter 12 are installed inside the frame.

[0042] Specifically, the lower cutter 12 is fixedly connected to the movable base plate 13 and the side upright plate 14 via the lower cutter bracket 121, and the upper cutter 11 is slidably connected to the side upright plate 14 via the upper cutter bracket 111, so that the upper cutter 11 can move up and down relative to the mounting bracket.

[0043] In this embodiment, in order to enable the upper cutter bracket 111 to move up and down relative to the side upright plate 14, the upper cutter bracket 111 is connected to the side upright plate 14 through the lifting guide rail 5 and the lifting slider 6.

[0044] Specifically, the side panel 14 is a rectangular plate, and its inner surface (facing the inside of the frame) has a groove along the height direction for mounting the lifting guide rail 5. For example, the lifting guide rail 5 is a long strip plate, and its two sides along the height direction have recessed first grooves. The lifting slider 6 has first protrusions on both sides, which can engage with the first grooves of the lifting guide rail 5, allowing the lifting slider 6 to move along the lifting guide rail 5.

[0045] The upper cutter bracket 111 has upper cutter holder slider seats 112 fixedly connected to both ends. The upper cutter holder slider seats 112 have grooves on the side facing the side plate 14 to accommodate the lifting slider 6. The lifting slider 6 is fixedly connected to the upper cutter holder slider seats 112, so that the upper cutter bracket 111 can drive the upper cutter 11 to move up and down along the side plate 14.

[0046] Furthermore, the string splitting device in this embodiment also includes a power mechanism, which is connected to the upper cutter bracket 111 and drives the upper cutter bracket 111 to move up and down along the side upright plate 14.

[0047] In a specific embodiment of the present invention, the power mechanism is an upper cutting cylinder 16. The upper cutting cylinder 16 is fixed on the top plate 15. The cylinder head of the upper cutting cylinder 16 passes through the top plate 15 and is fixedly connected to the upper cutting cylinder connecting plate 17. The upper cutting cylinder connecting plate 17 is fixed on the upper cutting support 111 and is fixedly connected to the upper blade holder slider seat 112. This allows the upper cutting support 111 to move up and down along the side upright plate 14 when the cylinder head of the upper cutting cylinder 16 extends or retracts, thereby driving the upper cutting blade 11 to move up and down.

[0048] Furthermore, the first split-running knife mechanism 1 and the second split-running knife mechanism 2 are connected by a connecting block 7, which is installed on the outer side (the side opposite to the inner side) of the side upright plate 14. The connecting block 7 connects the side upright plate 14 of the first split-running knife mechanism 1 and the second split-running knife mechanism 2.

[0049] In this embodiment, the connecting block 7 is a rectangular plate. The connecting block 7 is divided into a first half and a second half along its length. The first half of the connecting block 7 is provided with a threaded hole, and the second half is provided with an elongated hole. The length direction of the elongated hole is consistent with the length direction of the connecting block 7.

[0050] Furthermore, the side plates 14 of the first and second sub-spinning knife mechanisms 1 and 2 are provided with round holes at corresponding positions. The first half of the connecting block 7 is fixedly connected to the side plate 14 of one of the sub-spinning knife mechanisms (e.g., the first sub-spinning knife mechanism 1) by fasteners, and the second half of the connecting block 7 is connected to the side plate 14 of the other sub-spinning knife mechanism (e.g., the second sub-spinning knife mechanism 2). This allows the distance between the first and second sub-spinning knife mechanisms 1 and 2 to be adjusted to meet the requirements of different welding strip lengths.

[0051] After adjusting the relative distance between the first split-type knife mechanism 1 and the second split-type knife mechanism 2, fasteners are inserted into the elongated hole of the connecting block 7 and the hole in the side upright plate of the second split-type knife mechanism 2 to lock the connecting block 7 and the first split-type knife mechanism 1 and the second split-type knife mechanism 2, so that the distance between the first split-type knife mechanism 1 and the second split-type knife mechanism 2 is relatively fixed.

[0052] In this embodiment, in order to enable the first splitting knife mechanism 1 and the second splitting knife mechanism 2 to move along the base 3 under the drive of the misaligned cylinder mechanism, a translation guide rail 32 is provided on the base 3, and the translation guide rail 32 is installed on the bottom plate 31 of the base 3.

[0053] In this embodiment, in order to ensure the stability of the movement of the first split-type knife mechanism 1 and the second split-type knife mechanism 2, two translation guide rails 32 are provided. The two translation guide rails 32 are located at both ends of the base plate 31 and are parallel to each other. The translation guide rails 32 are perpendicular to the first split-type knife mechanism 1 and the second split-type knife mechanism 2.

[0054] For example, the translation guide rail 32 is a long strip plate, and the translation guide rail 32 has second sliding grooves on both sides along its length. The bottom of the first split-cutting knife mechanism 1 and the second split-cutting knife mechanism 2 is provided with a translation slider 33, and the translation slider 33 has second protrusions on both sides. The second protrusions can be locked in the second sliding grooves of the translation guide rail 32, so that the translation slider 33 can slide along the translation guide rail 32.

[0055] Furthermore, the translation slider 33 is installed at the bottom of the movable base plate 13 of the mounting bracket and is fixedly connected to the movable base plate 13, so that the first splitting knife mechanism 1 and the second splitting knife mechanism 2 can slide along the translation guide rail 32.

[0056] Furthermore, to ensure the stability of the first and second split-cutter mechanisms 1 and 2 as they move along the translation guide rail 32, the base 3 also includes a translation guide rod 34. The translation guide rod 34 is located above and parallel to the translation guide rail 32. The two ends of the translation guide rod 34 are flush with the two ends of the translation guide rail 32 and are connected to the translation guide rail 32 and the base plate 31 through a fixing plate.

[0057] Furthermore, the translation guide rod 34 passes through the movable base plate 13 of the first split-type knife mechanism 1 and the second split-type knife structure, on the one hand fixing the first split-type knife mechanism 1 and the second split-type knife mechanism 2 to the base 3, and on the other hand providing guidance for the movement of the first split-type knife mechanism 1 and the second split-type knife mechanism 2, ensuring the accuracy of the movement of the first split-type knife mechanism 1 and the second split-type knife mechanism 2.

[0058] In this embodiment, the misaligned cylinder mechanism includes a misaligned cylinder 4 and a misaligned cylinder fixing plate 41. The misaligned cylinder 4 is connected to the translation guide rod 34 through the misaligned cylinder fixing plate 41. The translation guide rod 34 passes through the misaligned cylinder fixing plate 41 to fix the misaligned cylinder 4 on the base 3.

[0059] Furthermore, the cylinder head of the misaligned cylinder 4 is fixedly connected to the movable base plate 13 of the first splitting knife mechanism 1, so that when the cylinder head of the misaligned cylinder 4 extends or retracts, it can drive the first splitting knife mechanism 1 and the second splitting knife mechanism 2 to slide along the translation guide rail 32 and the translation guide rod 34.

[0060] Furthermore, in order to prevent the misaligned cylinder fixing plate 41 from moving relative to the translation guide rod 34, both ends of the misaligned cylinder fixing plate 41 are locked relative to the translation guide rod 34 by locking screws 42.

[0061] Furthermore, to limit the movement distance of the first string-splitting knife mechanism 1 and the second string-splitting knife mechanism 2, the string-splitting device in this embodiment is also provided with a limiting block 8. The limiting block 8 is located on the side of the second string-splitting knife mechanism 2 away from the first string-splitting knife mechanism 1. The limiting block 8 is sleeved on the translation guide rod 34 and locked relative to the translation guide rail 34 by fasteners, so that the limiting block 8 can be fixed relative to the translation guide rail 34. When it is necessary to change the movement distance of the first string-splitting knife mechanism 1 and the second string-splitting knife mechanism 2, the fasteners can be loosened to change the relative position of the limiting block 8 on the translation guide rail 34.

[0062] Furthermore, in order to allow the battery strings to flow between the upper cutter 11 and the lower cutter 12, the string splitting device in this embodiment is also provided with a conveyor pulley 9. The battery strings flowing out from the string welding machine are conveyed to the upper cutter 11 and the lower cutter 12 via the conveyor pulley 9. Depending on the required welding strip length, the upper cutter 11 of the first string splitting knife or the second string splitting knife is activated, or the upper cutter 11 of the first string splitting knife and the second string splitting knife are activated simultaneously, thereby cutting out the required welding strip length.

[0063] In this embodiment, when the battery stringing device is in use, the battery string flows in from the side where the second stringing knife mechanism 2 is located and flows out from the side where the misalignment cylinder is located.

[0064] In this embodiment, when the stringing device produces double-glass photovoltaic modules, it can cut the required solder strip length by controlling the first stringing knife mechanism 1 or the second stringing knife mechanism 2 to operate individually, or by controlling the first stringing knife mechanism 1 and the second stringing knife mechanism 2 to operate simultaneously.

[0065] Specifically, a double-glass photovoltaic module includes strings A and B. The lengths of the solder ribbons on both sides of strings A and B are different. String A is defined as having a longer solder ribbon on the positive side (head), and string B as having a longer solder ribbon on the negative side (tail). Strings A and B are manufactured alternately. Assume the length of the solder ribbon at the head of string A is *a*, and the length at the tail is *b*, and the length of the solder ribbon at the head of string B is *b*, and the length at the tail is *a*, where *a* > *b*, and the interval between the two strings is 2*a*.

[0066] When producing string A first and then string B, the first string-splitting mechanism 1 first activates, cutting off the length (a) of the solder strip at the head of string A. The string then flows forward until the tail of string A reaches the string-splitting device. Simultaneously, the misalignment cylinder of the string-splitting device activates, causing the first string-splitting mechanism 1 and the second string-splitting mechanism 2 to move a certain distance (c) towards the misalignment cylinder. After the first string-splitting mechanism 1 and the second string-splitting mechanism 2 reach their positions, they activate simultaneously, cutting off a portion of the solder strip located between the first string-splitting mechanism 1 and the second string-splitting mechanism 2, cutting off the length (b) of the solder strip at the tail of string A and the length (b) of the solder strip at the head of string B. Then, the misalignment cylinder 4 activates, causing the first string-splitting mechanism 1 and the second string-splitting mechanism 2 to reset. The string then flows forward until the tail of string B reaches the string-splitting device. The first string-splitting mechanism 1 then activates, cutting the solder strip in the middle, obtaining the length (a) of the solder strip at the tail of string B and the length (a) of the solder strip at the head of the next string A. This process is repeated.

[0067] When B strings are produced first and then A strings are produced, the misalignment cylinder first moves the first string-splitting knife mechanism 1 and the second string-splitting knife mechanism 2 a certain distance. Then, the first string-splitting knife mechanism 1 and the second string-splitting knife mechanism 2 move simultaneously. Afterward, the first string-splitting knife mechanism 1 and the second string-splitting knife mechanism 2 are reset, and then the second string-splitting knife mechanism 2 moves independently.

[0068] For example, if a is set to 9mm and b to 6mm, the interval between the two battery strings is 18mm, and the distance between the splitting blades of the first splitting blade mechanism 1 and the second splitting blade mechanism 2 is 6mm. When producing string A first and then string B, the first splitting blade mechanism 1 first operates, cutting off the 9mm long weld strip at the head of string A. The battery strings then flow forward until the tail of string A reaches the splitting device. Simultaneously, the misalignment cylinder of the splitting device operates, causing the first splitting blade mechanism 1 and the second splitting blade mechanism 2 to move together 3mm in the direction of the misalignment cylinder. After the first splitting blade mechanism 1 and the second splitting blade mechanism 2 reach their positions, they operate simultaneously, cutting off the 6mm long weld strip located between the first splitting blade mechanism 1 and the second splitting blade mechanism 2, and simultaneously cutting off the 6mm long weld strip at the tail of string A and the 6mm long weld strip at the head of string B. Subsequently, the misalignment cylinder actuates, causing the first string splitting knife mechanism 1 and the second string splitting knife mechanism 2 to reset. At the same time, the battery string flows forward until the tail of string B reaches the string splitting device. Then, the first string splitting knife mechanism 1 actuates, cutting the solder strip in the middle to obtain a 9mm long solder strip head at the tail of string B and a 9mm long solder strip head at the head of the next string A. This process is repeated.

[0069] Example 2

[0070] One embodiment of the present invention discloses a string splitting method using the double-blade string splitting device of the string welding machine of Embodiment 1.

[0071] When producing double-glass photovoltaic modules, if string A is produced first and then string B, the following steps are included:

[0072] Step 1: The first splitting knife mechanism 1 is activated to cut out the length of the welding strip at the head of string A;

[0073] Assume that the length of the lead wire at the beginning of string A is *a*, and the length of the lead wire at the end is *b*, and the length of the lead wire at the beginning of string B is *b*, and the length of the lead wire at the end is *a*, where *a* > *b*, and the interval between the two strings is 2*a*. The strings flow into the string splitting device, and the middle section of the two strings is directly below the first string splitting cutter mechanism 1. At this point, the first string splitting cutter mechanism 1 activates, cutting off the lead wire length *a* of string A.

[0074] Step 2: The misalignment cylinder 4 is activated, and the first split-cutting mechanism 1 and the second split-cutting mechanism 2 move together a certain distance in the direction of the misalignment cylinder 4;

[0075] The battery string flows forward (in the direction of the misalignment cylinder 4) until the tail of string A reaches the string splitting device. At the same time, the misalignment cylinder 4 of the string splitting device is activated, causing the first string splitting knife mechanism 1 and the second string splitting knife mechanism 2 to move together a certain distance c in the direction of the misalignment cylinder 4, where c = ab.

[0076] Step 3: The first splitting blade mechanism 1 and the second splitting blade mechanism 2 operate simultaneously to cut off a portion of the solder strip located between the first splitting blade mechanism 1 and the second splitting blade mechanism 2, and simultaneously cut off the length of the tail solder strip of string A and the length of the head solder strip of string B.

[0077] After the first splitting blade mechanism 1 and the second splitting blade mechanism 2 are in place, they act simultaneously to cut off a portion of the solder strip located between the first splitting blade mechanism 1 and the second splitting blade mechanism 2. The length of the cut is 2 (ab). At the same time, the length b of the tail solder strip of string A and the length b of the head solder strip of string B are cut off.

[0078] Step 4: The first splitting blade mechanism 1 and the second splitting blade mechanism 2 are reset. The first splitting blade mechanism 1 is activated to cut out the length of the tail solder strip of the B string and the length of the head solder strip of the next A string.

[0079] Subsequently, the misalignment cylinder 4 is activated, causing the first string splitting knife mechanism 1 and the second string splitting knife mechanism 2 to reset. At the same time, the battery string flows forward until the tail of string B reaches the string splitting device. Then, the first string splitting knife mechanism 1 is activated to cut the solder strip in the middle, obtaining the length a of the solder strip head at the tail of string B and the length a of the solder strip head at the head of the next string A. This process is repeated.

[0080] When string B is produced first and then string A is produced, the following steps are included:

[0081] Step 1: The misalignment cylinder 4 is activated, and the first splitting knife mechanism 1 and the second splitting knife mechanism 2 move together a certain distance in the direction of the misalignment cylinder 4;

[0082] Step 2: The first splitting blade mechanism 1 and the second splitting blade mechanism 2 operate simultaneously to cut off a portion of the solder strip located between the first splitting blade mechanism 1 and the second splitting blade mechanism 2, cutting out the head length of the solder strip of the B string.

[0083] Step 3: The first splitting blade mechanism 1 and the second splitting blade mechanism 2 are reset. The first splitting blade mechanism 1 is activated to cut out the length of the tail weld strip of the B string and the length of the head weld strip of the A string.

[0084] Step 4: The misalignment cylinder 4 is activated, and the first splitting blade mechanism 1 and the second splitting blade mechanism 2 move together a certain distance toward the misalignment cylinder 4. After the first splitting blade mechanism 1 and the second splitting blade mechanism 2 are in place, they are activated simultaneously to cut off a portion of the welding strip located between the first splitting blade mechanism 1 and the second splitting blade mechanism 2. At the same time, the length of the tail welding strip of the A string and the length of the head welding strip of the next B string are cut off, and so on.

[0085] When producing conventional battery strings, either the first splitting knife mechanism 1 or the second splitting knife mechanism operates independently to separate two battery strings from the middle of the solder strip.

[0086] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A double-blade string-separating device for a string welding machine, characterized in that, It includes a first split-type knife mechanism (1), a second split-type knife mechanism (2), and a misaligned cylinder mechanism. The misaligned cylinder mechanism, the first split-type knife mechanism (1), and the second split-type knife mechanism (2) are connected in sequence. The first split-type knife mechanism (1) and the second split-type knife mechanism (2) can move under the drive of the misaligned cylinder mechanism. It also includes a base (3), and the first splitting knife mechanism (1) includes an upper cutter (11), a lower cutter (12) and a mounting bracket. The upper cutter (11) and the lower cutter (12) are fixed on the base (3) by the mounting bracket. The second splitting knife mechanism (2) has the same structure as the first splitting knife mechanism (1) and is connected by a connecting block. When A string is produced first and then B string is produced, the first splitting knife mechanism (1) operates to cut out the length of the head welding strip of A string. When the first split-string knife mechanism (1) and the second split-string knife mechanism (2) move together a certain distance toward the misaligned cylinder (4), the first split-string knife mechanism (1) and the second split-string knife mechanism (2) act simultaneously to cut off a portion of the welding strip located between the first split-string knife mechanism (1) and the second split-string knife mechanism (2), and simultaneously cut off the length of the tail welding strip of string A and the length of the head welding strip of string B. When the first splitting knife mechanism (1) and the second splitting knife mechanism (2) are reset, the first splitting knife mechanism (1) is activated to cut out the length of the tail solder strip of the B string and the length of the head solder strip of the next A string.

2. The double-blade string splitting device for a string welding machine according to claim 1, characterized in that, The mounting bracket includes a movable base plate (13), two side upright plates (14) and a top plate (15). The movable base plate (13), the two side upright plates (14) and the top plate (15) form a frame structure. The upper cutter (11) and the lower cutter (12) are installed inside the frame.

3. The double-blade string splitting device for a string welding machine according to claim 2, characterized in that, The lower cutter (12) is fixedly connected to the side plate (14) via the lower cutter bracket (121), and the upper cutter (11) is slidably connected to the side plate (14) via the upper cutter bracket (111).

4. The double-blade string splitting device for a string welding machine according to claim 3, characterized in that, The upper cutter bracket (111) is connected to the side upright plate (14) via the lifting guide rail (5) and the lifting slider (6).

5. The double-blade string splitting device for a string welding machine according to claim 3, characterized in that, It also includes an upper cutting cylinder (16), which is fixed on the top plate (15). The cylinder head of the upper cutting cylinder (16) passes through the top plate (15) and is fixedly connected to the upper cutting cylinder connecting plate (17). The upper cutting cylinder connecting plate (17) is fixed on the upper cutting bracket (111).

6. The double-blade string splitting device for a string welding machine according to claim 1, characterized in that, The base (3) is provided with a translation guide rail (32), which is installed on the bottom plate (31) of the base (3).

7. The double-blade string splitting device for a string welding machine according to any one of claims 2-5, characterized in that, The misaligned cylinder mechanism includes a misaligned cylinder (4), the cylinder head of which is fixedly connected to the movable base plate (13) of the first splitting knife mechanism (1).

8. A string splitting method, characterized in that, When using the double-blade string splitting device of the string welding machine according to any one of claims 1-7 to produce double-glass photovoltaic modules, when producing string A first and then string B, the following steps are included: Step 1: The first splitting knife mechanism (1) operates to cut out the length of the head welding strip of string A; Step 2: The misalignment cylinder (4) is activated, and the first split-cutting mechanism (1) and the second split-cutting mechanism (2) move together a certain distance in the direction of the misalignment cylinder (4); Step 3: The first splitting blade mechanism (1) and the second splitting blade mechanism (2) operate simultaneously to cut off a portion of the solder strip located between the first splitting blade mechanism (1) and the second splitting blade mechanism (2), and simultaneously cut off the length of the tail solder strip of string A and the length of the head solder strip of string B. Step 4: The first splitting knife mechanism (1) and the second splitting knife mechanism (2) are reset. The first splitting knife mechanism (1) is activated to cut out the length of the tail of the B string and the length of the head of the next A string.

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