Battery piece processing device and battery string forming equipment

Abstract

The utility model provides a battery piece processing device and battery bunching equipment, the battery piece processing device comprises a battery piece conveying mechanism, n film strip preparation mechanisms and a film strip carrying mechanism, the battery piece conveying mechanism is configured to convey battery pieces along a first direction, and a conveying path of the battery piece conveying mechanism is at least provided with a film stacking station; each film strip preparation mechanism is configured to release a film strip and cut off the film strip to obtain a film strip section with a preset length; the film strip carrying mechanism is configured to pick up the prepared n film strip sections from the n film strip preparation mechanisms, stack the picked n film strip sections one by one and bond the n film strip sections to the edges of one ends of the n battery pieces located at the film stacking station, n battery units are obtained, and n is larger than or equal to 1. According to the battery piece processing device, the film strips are bonded to the battery pieces firstly, the operation of lifting the battery pieces to insert the film in the follow-up string forming process is omitted, and therefore the risk of subfissure or fragmentation of the battery pieces caused by the film inserting operation can be avoided, and the string forming quality of battery strings is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic cell production equipment, in particular to a cell piece processing device and a cell string forming device. BACKGROUND

[0002] The cell string is formed by a plurality of cell pieces connected by a welding strip group, Figure 1 A common cell string is shown, in which the front half of the welding strip group 300 is stacked and welded on the upper surface of the cell piece 101 on the front side (e.g. the right side), and the rear half of the welding strip group 300 is welded on the lower surface of the cell piece 101 on the rear side (e.g. the left side). When the photovoltaic module formed by the cell string is subjected to lamination, local stress occurs at the edge contact between the welding strip group 300 and the cell piece 101, which easily causes the cell piece 101 to crack.

[0003] As shown in Figure 1 To solve the above problems, a feasible solution is to set a film strip segment 201 between the adjacent two cell pieces 101 during the production of the cell string, and to buffer the stress at the edge contact between the welding strip group 300 and the cell piece 101 by the film strip segment 201.

[0004] In order to prepare a cell string with a film strip segment between adjacent two cell pieces, the conventional processing method is to first weld the cell pieces and the welding strip group into a cell string, and then insert the film strip segment into the inter-piece position of the cell string. Since the cell pieces and the welding strip group have been welded, one of the adjacent two cell pieces needs to be lifted to form an insertion gap when inserting the film strip, and then the film strip segment is inserted. However, the process of lifting the cell piece is easy to cause the cell piece to crack or break, which affects the quality of the cell string. INVENTION CONTENTS

[0005] To solve the above technical problems, the present application provides a cell piece processing device, which adopts the following technical solutions:

[0006] A cell piece processing device, comprising a cell piece conveying mechanism, n film strip preparation mechanisms, and a film strip carrying mechanism, wherein:

[0007] The cell piece conveying mechanism is configured to convey the cell pieces in a first direction, and at least one film stacking station is provided on the conveying path of the cell piece conveying mechanism;

[0008] Each film strip preparation mechanism is configured to release one film strip, and to cut the film strip to obtain a film strip segment with a predetermined length;

[0009] The film strip carrying mechanism is configured to pick up the n film strip segments prepared from the n film strip preparation mechanisms, and to stack and bond the n film strip segments one by one to the edge of one end of the n cell pieces located in the film stacking station, to obtain n cell units, n≥1.

[0010] The battery piece processing device provided by the application directly discharges the film strip of the required width by using the film strip preparation mechanism, and can automatically cut the film strip into segments. Then, the film strip segments are stacked and bonded to the end edge of the battery piece by the film strip carrying mechanism, so as to obtain a battery unit composed of the battery piece and the film strip segment. In the subsequent stringing process, the battery unit and the welding strip group are laid into a string according to the predetermined stringing rule, so that the film strip segment enters the corresponding inter-piece position.

[0011] The battery piece processing device provided by the application first bonds the film strip segment to the battery piece, which eliminates the operation of lifting the battery piece to insert the film in the subsequent stringing process, thereby avoiding the risk of hidden cracks or fragments of the battery piece caused by the film insertion operation and ensuring the quality of the battery string.

[0012] In some embodiments, each film strip preparation mechanism includes a feeding part, a pressing and cutting part, a bearing table and a traction part. The feeding part is configured to discharge the film strip. The pressing and cutting part is located between the feeding part and the bearing table. The traction part is configured to clamp the free end of the film strip extending out of the pressing and cutting part and to pull the film strip of a predetermined length to the bearing table. The pressing and cutting part is configured to press and cut the film strip to obtain a film strip segment. The film strip carrying mechanism is configured to pick up the film strip segment from the bearing table.

[0013] After the traction part pulls the film strip of a predetermined length above the bearing table, the pressing and cutting part cuts the film strip to obtain the film strip segment on the bearing table, so that the film strip carrying mechanism can pick up the film strip segment from the bearing table. Since the pressing and cutting part can press the film strip when cutting the film strip, the new free end of the film strip generated by cutting is kept in the pressing and cutting part, preventing the film strip from retracting towards the feeding part.

[0014] In some embodiments, the pressing and cutting part includes a first pressure receiving seat, a first lifting drive, a mounting plate, a first pressing block and a cutter. The first lifting drive is arranged above the first pressure receiving seat. The mounting plate is connected to the driving end of the first lifting drive. The first pressing block and the cutter are both connected to the bottom of the mounting plate, wherein the cutter is located on the side of the first pressing block facing the bearing table. The first lifting drive is configured to drive the mounting plate to move away from or close to the first pressure receiving seat. When the mounting plate moves away from the first pressure receiving seat, the first pressing block and the cutter form a first gap between them for the film strip to pass through. When the mounting plate moves close to the first pressure receiving seat, the first pressing block presses the film strip on the first side of the cutter onto the first pressure receiving seat, and the cutter cuts the film strip.

[0015] By setting the pressing and cutting part, only one lifting driving part is needed to press the film strip and cut the film strip, which reduces the cost and structural complexity of the pressing and cutting part. In addition, since the cutter is located on the side of the first pressing block facing the bearing table, after the film strip is cut, the new free end of the film strip is pressed and held on the pressing and cutting part.

[0016] In some embodiments, the first pressing block is connected to the bottom of the mounting plate through a buffer connector and can float up and down; when the buffer connector is in a natural state, the bottom of the first pressing block is lower than the bottom of the cutter; when the first lifting driving part drives the first pressing block to press the film strip to the first pressure seat, the buffer connector elastically contracts, and the cutter extends downward to cut the film strip.

[0017] The first pressing block is connected to the bottom of the mounting plate through a buffer connector and can float up and down, which can realize that the first pressing block first elastically presses the film strip to the first pressure seat, and then the cutter extends out of the first pressing block to cut the film strip, thereby improving the cutting effect of the cutter on the film strip.

[0018] In some embodiments, the pressing and cutting part further comprises a second pressing block, wherein: the second pressing block is connected to the side wall of the first pressing block facing the bearing table and is located above the first end of the bearing table, the first end of the bearing table is the end of the bearing table facing the pressing and cutting part, and the second pressing block and the first pressing block form a cutting channel for the cutter to pass through; when the mounting plate is away from the first pressure seat, the second pressing block and the first end of the bearing table form a second gap for the film strip to pass through; when the mounting plate is close to the first pressure seat, the second pressing block presses the film strip on the second side of the cutter on the first end of the bearing table.

[0019] When the cutter cuts the film strip, the first pressing block presses the film strip from the first side of the cutter, and the second pressing block presses the film strip from the second side of the cutter, so that the cutting position of the film strip is tightened during the cutting process, thereby improving the cutting quality of the film strip and forming a flat cut on the cutting position of the film strip.

[0020] In some embodiments, each film strip preparation mechanism further comprises a clamping portion located between the feeding portion and the pressing and cutting portion, the film strip discharged from the feeding portion passes through the clamping portion and the pressing and cutting portion in sequence, the clamping portion is configured to clamp the film strip when the pressing and cutting portion cuts the film strip; the film strip preparation mechanism further comprises a first translation driving portion, the clamping portion is connected to a moving component of the first translation driving portion, the first translation driving portion is configured to drive the clamping portion to translate towards or away from the pressing and cutting portion, so that the new free end of the film strip generated by cutting extends out of the pressing and cutting portion; and / or, the film strip preparation mechanism further comprises a second translation driving portion, the pressing and cutting portion is connected to a moving component of the second translation driving portion, the second translation driving portion is configured to drive the pressing and cutting portion to translate towards or away from the clamping portion, so that the new free end of the film strip generated by cutting extends out of the pressing and cutting portion.

[0021] By arranging the clamping portion between the feeding portion and the pressing and cutting portion, the clamping portion clamps the film strip when the pressing and cutting portion cuts the film strip. After the pressing and cutting portion cuts the film strip, the clamping portion translates towards the pressing and cutting portion, or the pressing and cutting portion translates towards the clamping portion, or the clamping portion and the pressing and cutting portion synchronously translate towards each other, so that the new free end of the film strip generated by cutting extends out of the pressing and cutting portion, facilitating the traction portion to successfully clamp the free end of the film strip next time.

[0022] In some embodiments, the clamping portion comprises a second pressure receiving seat, a second lifting driving member and a third pressing block, wherein: the second lifting driving member is located above the second pressure receiving seat, the third pressing block is connected to the driving end of the second lifting driving member, the film strip passes through between the third pressing block and the second pressure receiving seat, and the second lifting driving member is configured to drive the third pressing block to lift or release the film strip.

[0023] A clamping portion with simple structure is provided, when the traction portion tractions the film strip, the clamping portion releases the film strip, so that the film strip can pass through the clamping portion freely. When the traction portion tractions the film strip to the position and the pressing and cutting portion cuts the film strip, the clamping portion clamps the film strip.

[0024] In some embodiments, the pressing and cutting portion comprises a pressing assembly and a cutting assembly, the film strip discharged from the feeding portion passes through the pressing assembly and the cutting assembly in sequence; the cutting assembly is configured to cut the film strip to obtain a film strip segment, and the pressing assembly is configured to press the film strip when the cutting assembly cuts the film strip; the pressing assembly is further configured to move towards or away from the cutting assembly after the cutting assembly cuts the film strip, so that the new free end of the film strip generated by cutting extends out of the cutting assembly.

[0025] By setting the compression cutting-off part to include the compression assembly and the cutting-off assembly, when the cutting-off assembly implements cutting-off of the film strip, the compression assembly compresses the film strip, so that the new free end of the film strip generated by the cutting-off is kept in the cutting-off assembly, preventing the film strip from retracting towards the feeding part. In addition, after the cutting-off assembly completes the cutting-off of the film strip, the compression assembly can move towards the cutting-off assembly, so that the new free end of the film strip protrudes out of the cutting-off assembly, facilitating the traction part to smoothly clamp the free end of the film strip next time.

[0026] In some embodiments, the carrying table is connected to the moving part of the third translation driving part, and the third translation driving part is configured to drive the carrying table to move and switch between the cutting station close to the compression cutting-off part and the feeding station close to the film strip conveying mechanism; when the carrying table moves and switches to the cutting station, the traction part pulls the film strip onto the carrying table; when the carrying table moves and switches to the feeding station, the film strip conveying mechanism picks up the film strip segment from the carrying table.

[0027] By connecting the carrying table to the moving part of the third translation driving part, the carrying table can not only cooperate with the compression cutting-off part to complete cutting of the film strip and obtain the film strip segment, but also automatically deliver the obtained film strip segment to the feeding station, so that the film strip conveying mechanism can pick up the film strip segment nearby, thereby ensuring the working rhythm and improving the processing efficiency.

[0028] In some embodiments, two carrying tables are provided, and the third translation driving part is configured to drive the two carrying tables to alternately move and switch between the cutting station and the feeding station, when one carrying table is located at the cutting station, the other carrying table is located at the feeding station.

[0029] The two carrying tables alternately obtain the film strip segment and alternately deliver the obtained film strip segment to the feeding station, ensuring that the film strip conveying mechanism can timely pick up the film strip segment, preventing the occurrence of feeding waiting, and further improving the processing efficiency.

[0030] In some embodiments, the carrying table is fixedly arranged, the first end of the carrying table is close to the compression cutting-off part, and the second end of the carrying table is close to the film stacking station of the battery piece conveying part.

[0031] By setting the positions of the two ends of the carrying table, on the one hand, the carrying table can cooperate with the compression cutting-off part to complete cutting of the film strip and obtain the film strip segment; on the other hand, the film strip conveying mechanism can pick up the film strip segment from the carrying table nearby.

[0032] In some embodiments, a plurality of spaced adsorption holes are arranged on the table top of the carrying table, and the plurality of adsorption holes are used to cooperate with the film strip pulled onto the carrying table.

[0033] The film strip pulled to the bearing table can be adsorbed and positioned, the position deviation of the film strip is prevented, and the film strip conveying mechanism can smoothly suck the film strip.

[0034] In some embodiments, the battery piece conveying mechanism is provided with a first heating assembly configured to heat the battery piece so that the film strip segment stacked on the battery piece is bonded to the battery piece after releasing the adhesion; or the film strip conveying mechanism is provided with a second heating assembly configured to heat the film strip segment so that the film strip segment is bonded to the battery piece after releasing the adhesion.

[0035] By providing the first heating assembly on the battery piece conveying mechanism, the battery piece is heated, so that the film strip segment stacked on the battery piece is bonded to the battery piece after being heated by the high-temperature battery piece. By providing the second heating assembly on the film strip stacking mechanism, the film strip segment adsorbed thereon is heated before being stacked on the battery piece by the film strip conveying mechanism, so that the film strip segment can be bonded to the battery piece. Since the battery piece and the film strip segment in the battery cell have been bonded, the battery piece conveying mechanism can avoid displacement between the film strip segment and the battery piece during conveying the battery cell to the subsequent process of laying the battery cell in a string.

[0036] In some embodiments, the battery piece conveying mechanism includes a bottom plate and a conveying belt, the bottom plate is used to support the conveying surface of the conveying belt, and the conveying belt is used to convey the battery piece; the first heating assembly is arranged on the bottom plate located at the film stacking station and the film stacking station in front; or the first heating assembly is arranged on the bottom plate below the entire conveying surface of the conveying belt.

[0037] By arranging the first heating assembly on the bottom plate located at the film stacking station and the film stacking station in front, the battery piece can be heated by the conveying belt before being conveyed to the film stacking station and when reaching the film stacking station, so that the temperature of the battery piece at the film stacking station is high enough to finally ensure that the film strip segment stacked on the battery piece is bonded to the battery piece. By arranging the first heating assembly on the bottom plate below the entire conveying surface of the conveying belt, it can be ensured that the film strip segment stacked on the battery piece is bonded to the battery piece. In addition, during the conveying of the battery cell from the film stacking station to the subsequent process, the conveying belt can continue to heat the battery cell, so that the film strip segment always maintains a certain temperature and does not bond to the conveying belt, which facilitates the subsequent smooth removal of the battery cell from the conveying belt.

[0038] In some embodiments, the conveying path of the cell piece conveying mechanism is further provided with a shaping station located in front of the film stacking station; the cell piece processing device further comprises a shaping mechanism arranged at the shaping station, the shaping mechanism comprising a shaping driving part, a first shaping part and a second shaping part, wherein the first shaping part and the second shaping part are respectively located on both sides of the conveying direction of the cell piece conveying mechanism, and the shaping driving part is configured to drive the first shaping part and / or the second shaping part to translate towards the cell piece conveying mechanism to push the side edges of the cell piece located at the shaping station.

[0039] By arranging the shaping station in front of the film stacking station and arranging the shaping mechanism at the shaping station, the position of the cell piece to be pasted with the film is corrected, so that the two side edges of the cell piece are parallel to the first direction, and finally the film strip stacked on one end of the cell piece is parallel to the end edge of the cell piece.

[0040] In some embodiments, the film strip conveying mechanism comprises n conveying assemblies corresponding to the n film strip preparation mechanisms one by one, each conveying assembly comprising a first driving part and a first adsorption strip, the first driving part being configured to drive the first adsorption strip to move to adsorb the film strip segment from the corresponding film strip preparation mechanism and to stack the adsorbed film strip segment on the end edge of one cell piece located at the film stacking station; or the film strip conveying mechanism comprises a second driving part and n second adsorption strips corresponding to the n film strip preparation mechanisms one by one, the second driving part being configured to drive the n second adsorption strips to move to adsorb the film strip segment from the corresponding film strip preparation mechanism and to stack the adsorbed film strip segment on the end edge of the n cell pieces located at the film stacking station.

[0041] By arranging the film strip conveying mechanism to comprise n conveying assemblies, each conveying assembly comprising a first driving part and a first adsorption strip, the n conveying assemblies can independently implement the conveying and stacking of the corresponding film strip segments, so that each conveying assembly can accurately pick up the corresponding film strip segment and accurately stack the picked film strip segment on the corresponding cell piece.

[0042] By arranging the film strip conveying mechanism to comprise a second driving part and n second adsorption strips, only one driving part is needed to drive the n second adsorption strips to synchronously pick up the film strip segments from the n film strip preparation mechanisms and to synchronously stack the picked film strip segments on the n cell pieces located at the film stacking station, thereby reducing the structural complexity and cost of the film strip conveying mechanism.

[0043] The application further provides a cell string forming device, comprising a cell unit laying mechanism, a welding strip laying mechanism, a stringing conveying line, a stringing mechanism and the cell piece processing device described in any one of the preceding embodiments, wherein:

[0044] The battery cell laying mechanism is configured to pick up the battery cell from the battery sheet processing device, and is configured to lay the battery cell and the welding strip group on the stringing conveying line according to the predetermined stringing rule in cooperation with the welding strip laying mechanism;

[0045] The stringing conveying line is configured to convey the laid battery cell and welding strip group to the stringing station;

[0046] The stringing mechanism is located at the stringing station, and the stringing mechanism is configured to connect the welding strip group to the corresponding battery sheet, and the stringing mechanism is at least one of a heating mechanism and a photocuring mechanism.

[0047] By setting the battery sheet processing device, the pre-preparation of the battery cell composed of the battery sheet and the film strip segment is realized. In this way, the battery cell laying mechanism and the welding strip laying mechanism can lay the battery cell and the welding strip group according to the stringing rule on the stringing conveying line, and finally the welding strip group is welded to the corresponding battery sheet of the battery cell by the stringing mechanism, and the film strip segment enters the corresponding inter-sheet position. Compared with the existing battery string stringing method, the battery string stringing operation is implemented by using the battery stringing device of the present application, and the subsequent film insertion operation is omitted, thereby improving the battery string stringing efficiency and stringing quality. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of a battery string with a film strip segment;

[0049] Figure 2 It is a structural schematic diagram of the battery sheet processing device in the first embodiment of the present application from one perspective;

[0050] Figure 3 It is a structural schematic diagram of the battery sheet processing device in the first embodiment of the present application from another perspective;

[0051] Figure 4 It is Figure 3 It is a local enlarged view of the C area of the battery sheet processing device in the first embodiment of the present application;

[0052] Figure 5 It is a structural schematic diagram of the pressing and cutting part in the first embodiment of the present application;

[0053] Figure 6 It is a structural schematic diagram of the pressing and cutting part in the first embodiment of the present application after the second pressing block is omitted;

[0054] Figure 7 It is a structural schematic diagram of the battery sheet processing device in the second embodiment of the present application;

[0055] Figure 8 It is a structural schematic diagram of the battery sheet stringing device in the first embodiment of the present application;

[0056] Figure 9 A structure schematic diagram of a battery piece stringing device in the second embodiment of the present application;

[0057] Figure 10 A structure schematic diagram of a battery piece stringing device in the third embodiment of the present application;

[0058] Figure 11 A structure schematic diagram of a battery piece stringing device in the fourth embodiment of the present application;

[0059] Figure 12 A stringing process schematic diagram of a battery string in the embodiments of the present application.

[0060] Figures 1 to 12 The present application comprises:

[0061] The battery piece processing device 10 comprises:

[0062] The battery piece conveying mechanism 1 comprises:

[0063] The film strip preparation mechanism 2 comprises a feeding part 21, a pressing and cutting part 22, a bearing table 23, a traction part 24, a clamping part 25, a first translation driving part 26, a third translation driving part 27, a cutting channel 228, a feeding roller 211, a guide roller 212, a first pressure bearing seat 221, a first lifting driving member 222, a mounting plate 223, a first pressing block 224, a cutter 225, a buffer connecting member 226, a second pressing block 227, a cutting channel 228, a second pressure bearing seat 251, a third pressing block 252, and an adsorption hole 231.

[0064] The film strip preparation mechanism 2 comprises a feeding part 21, a pressing and cutting part 22, a bearing table 23, a traction part 24, a clamping part 25, a first translation driving part 26, a third translation driving part 27, a cutting channel 228, a feeding roller 211, a guide roller 212, a first pressure bearing seat 221, a first lifting driving member 222, a mounting plate 223, a first pressing block 224, a cutter 225, a buffer connecting member 226, a second pressing block 227, a cutting channel 228, a second pressure bearing seat 251, a third pressing block 252, and an adsorption hole 231.

[0065] The film strip conveying mechanism 3 comprises a first driving part 31 and a first adsorption strip 32.

[0066] The sizing mechanism 4.

[0067] The battery cell laying mechanism 20, the solder strip laying mechanism 30, the stringing conveying line 40, the stringing mechanism 50, the battery cell 100, the battery piece 101, the film strip segment 201, the film strip 200, the solder strip group 300, the driving part 20a, and the battery piece suction part 20b.

[0068] The film stacking station A and the sizing station B. DETAILED DESCRIPTION

[0069] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0070] As described in the background section, in order to prepare a cell string with a film strip segment between two adjacent cell pieces, a conventional processing mode is to first weld the cell pieces and the welding strip group into a cell string, and then insert the film strip segment into the inter-piece position of the cell string. Since the cell pieces and the welding strip group have been welded, one of the two adjacent cell pieces needs to be lifted to form an insertion gap for inserting the film strip segment. However, the process of lifting the cell piece is easy to cause the cell piece to be cracked or broken, affecting the stringing quality of the cell string.

[0071] To solve the above problems, the present application provides a cell piece processing device which can implement automatic cutting of a film strip into segments, and stacking and bonding of the film strip segments to the end edges of cell pieces, so as to obtain a cell unit composed of cell pieces and film strips. In the subsequent stringing process, the cell unit and the welding strip group are laid into a string according to a predetermined stringing rule, so that the film strip is inserted into the corresponding inter-piece position. Thus, the operation of lifting the cell piece for inserting the film strip in the subsequent stringing process is avoided, the risk of cracking or breaking the cell piece caused by the film insertion operation is avoided, and the stringing quality of the cell string is ensured.

[0072] Figure 2 Fig. 1 shows a structural schematic diagram of a cell piece processing device in a first embodiment of the present application, Figure 7 Fig. 2 shows a structural schematic diagram of a cell piece processing device in a second embodiment of the present application. As shown in Figs. 1 and 2, Figure 2 and Figure 7 The cell piece processing device in the embodiments of the present application comprises a cell piece conveying mechanism 1, n film strip preparation mechanisms 2, and a film strip handling mechanism 3, wherein:

[0073] The cell piece conveying mechanism 1 is configured to convey the cell pieces 101 in a first direction (such as the X direction), and at least a film stacking station A is arranged on the conveying path of the cell piece conveying mechanism 1.

[0074] Each film strip preparation mechanism 2 is configured to release a film strip 200, and cut the film strip 200 to obtain a film strip segment 201 with a predetermined length.

[0075] The film strip handling mechanism 3 is configured to pick up the n film strip segments 201 prepared from the n film strip preparation mechanisms 2, and stack and bond the n film strip segments 201 one by one to the end edges of the n cell pieces 101 located at the film stacking station A, to obtain n cell units 100, n≥1.

[0076] That is, the n film strip preparation mechanisms 2 implement automatic cutting of the film strip into segments, so as to obtain n film strip segments 201. Then the film strip handling mechanism 3 bonds the n film strip segments 201 one by one to the n cell pieces 101, so as to obtain n cell units 100 composed of the cell pieces 101 and the film strip segments 201.

[0077] In the subsequent stringing process, the battery unit 100 and the welding strip group are laid according to a predetermined stringing rule to make the film strip segment 201 enter the corresponding inter-sheet position.

[0078] The battery sheet processing device of the embodiments of the present application realizes the pre-preparation of the battery unit 100 composed of the battery sheet 101 and the film strip segment 201, eliminates the operation of lifting the battery sheet and inserting the film in the subsequent stringing process, thereby avoiding the risk of hidden cracks or fragments of the battery sheet caused by the film insertion operation, and ensuring the quality of the battery stringing.

[0079] Figure 2 And Figure 7 The battery sheet processing device 10 in the embodiment shown includes only one film strip preparation mechanism 2, i.e., n is 1. The battery sheet processing device 10 performs film stacking on one battery sheet 101 conveyed to the film stacking station A each time to obtain one battery unit 100. In order to improve processing efficiency, two, three or more film strip preparation mechanisms 2 can be provided in other embodiments, i.e., n is 2, 3 or a larger value. In this way, the battery sheet processing device 10 can perform film stacking on two, three or more battery sheets 101 conveyed to the film stacking station A each time to obtain two, three or more battery units 100.

[0080] The film strip conveying mechanism 3 can be provided as only one, which is configured to simultaneously pick up n film strip segments 201 from the n film strip preparation mechanisms 2 and correspondingly bond the n film strip segments 201 to the n battery sheets 101 at the film stacking station A.

[0081] For example, in an optional embodiment, the film strip conveying mechanism 3 includes n conveying assemblies corresponding to the n film strip preparation mechanisms 2. As shown in Figure 3 Each conveying assembly includes a first driving part 31 and a first adsorption strip 32. The first driving part 31 is configured to drive the first adsorption strip 32 to move to adsorb the film strip segment 201 from the corresponding film strip preparation mechanism 2 and stack the adsorbed film strip segment 201 to one end edge of one battery sheet 101 at the film stacking station A.

[0082] By providing the film strip conveying mechanism 3 with n conveying assemblies, the n conveying assemblies can independently perform conveying and stacking of the corresponding film strip segments 201, so that the n conveying assemblies can accurately pick up the corresponding film strip segments 201 and accurately stack the picked film strip segments 201 on the corresponding battery sheets 101.

[0083] In addition, the first adsorption strip 32 is used as the adsorption component, so that the film strip segment 201 is adsorbed in all directions along the length direction by the first adsorption strip 32, and the film strip segment 201 is prevented from being bent and sagged, so that the film strip segment 201 is prevented from being wrinkled after being bonded to the battery piece 101.

[0084] In another embodiment, the film strip conveying mechanism 3 comprises a second driving part and n second adsorption strips, the n second adsorption strips correspond to the n film strip preparation mechanisms 2 one by one, and the second driving part is configured to drive the n second adsorption strips to move, so as to drive the second adsorption strips to adsorb the film strip segments 201 from the corresponding film strip preparation mechanisms 2 and stack the adsorbed film strip segments 201 on one end edge of the n battery pieces 101 located at the film stacking station A.

[0085] In this way, only one driving part is needed, that is, the n second adsorption strips can be driven to synchronously pick up the film strip segments 201 from the n film strip preparation mechanisms 2 and synchronously stack the picked film strip segments 201 on the n battery pieces 101 located at the film stacking station, so as to reduce the structural complexity and cost of the film strip conveying mechanism 3.

[0086] Similarly, the second adsorption strip is used as the adsorption component, so that the film strip segment 201 is adsorbed in all directions along the length direction by the second adsorption strip, and the film strip segment 201 is prevented from being bent and sagged, so that the film strip segment 201 is prevented from being wrinkled after being bonded to the battery piece 101.

[0087] As shown in Figure 2 and Figure 7 Optionally, each film strip preparation mechanism 2 comprises a feeding part 21, a pressing and cutting part 22, a bearing table 23 and a traction part 24, wherein the feeding part 21 is configured to feed out the film strip 200, the pressing and cutting part 22 is located between the feeding part 21 and the bearing table 23, and the traction part 24 is configured to clamp the free end of the film strip 200 extending out of the pressing and cutting part 22 and traction a film strip 200 with a predetermined length to the bearing table 23. The pressing and cutting part 22 is configured to press and cut the film strip 200 to obtain the film strip segment 201, and the film strip conveying mechanism 3 is configured to pick up the film strip segment 201 from the bearing table 23.

[0088] It can be seen that the traction part 24 is used to traction the film strip 200 with a predetermined length to the bearing table 23. In this way, the film strip segment 201 on the bearing table 23 can be obtained by cutting the film strip by the pressing and cutting part 22, so that the film strip conveying mechanism 3 can pick up the film strip segment 201 from the bearing table 23.

[0089] In addition, the pressing and cutting part 22 can press the film strip 200 when cutting the film strip 200, so that the new free end of the film strip 200 generated after cutting is kept in the pressing and cutting part 22, and the film strip 200 is prevented from retracting towards the feeding part 21.

[0090] Of course, other structures of the film strip preparation mechanism 2 can also be adopted as long as it can pull the film strip 200 of a predetermined length to the bearing table 23 and cut the film strip 200.

[0091] As shown in Figures 2 to 4 Optionally, the pressing and cutting part 22 comprises a first pressing seat 221, a first lifting driving member 222, a mounting plate 223, a first pressing block 224 and a cutter 225. The first lifting driving member 222 is arranged above the first pressing seat 221, the mounting plate 223 is connected to the driving end of the first lifting driving member 222, the first pressing block 224 and the cutter 225 are connected to the bottom of the mounting plate 223, and the cutter 225 is located on the side of the first pressing block 224 facing the bearing table 23.

[0092] The first lifting driving member 222 is configured to drive the mounting plate 223 to lift so that the mounting plate 223 moves away from or approaches the first pressing seat 221. When the mounting plate 223 moves away from the first pressing seat 221, the first pressing block 224 and the cutter 225 form a first gap between the first pressing seat 221 for the film strip 200 to pass through. When the mounting plate 223 approaches the first pressing seat 221, the first pressing block 224 presses the film strip 200 on the first side of the cutter 225 (i.e. the side of the cutter 225 away from the bearing table 23) to the first pressing seat 221, and the cutter 225 cuts the film strip 200.

[0093] It can be seen that by setting the pressing and cutting part 22 as described above, only one lifting driving member needs to be set to enable the pressing and cutting part 22 to press the film strip 200 and cut the film strip 200, thereby reducing the cost and structural complexity of the pressing and cutting part 22. In addition, since the cutter 225 is located on the side of the first pressing block 224 facing the bearing table 23, after the film strip 200 is cut, the new free end of the film strip 200 is pressed and held on the pressing and cutting part 22, thereby preventing the film strip 200 from retracting.

[0094] The first lifting driving member 222 can adopt various linear driving devices such as air cylinders and lead screw modules that can drive the mounting plate 223 to lift.

[0095] Optionally, the first pressing block 224 is connected to the bottom of the mounting plate 223 in an up-and-down floating manner through a buffer connecting piece 226. When the buffer connecting piece 226 is in a natural state, the bottom of the first pressing block 224 is lower than the bottom of the cutter 225.

[0096] In this way, when the first lifting driving member 222 drives the first pressing block 224 to descend, the first pressing block 224 first presses the film strip 200 to the first pressure bearing seat 221, and then, as the mounting plate 223 continues to descend, the elastic buffer connecting member 226 is elastically contracted, so that the first pressing block 224 elastically presses the film strip 200 to the first pressure bearing seat 221, and finally the cutter 225 extends downward from the first pressing block 224 to cut the film strip 200.

[0097] That is, the first pressing block 224 first elastically presses the film strip 200 to the first pressure bearing seat 221, and then the cutter 225 extends from the first pressing block 224 to cut the film strip 200, so that the cutting effect of the cutter 225 on the film strip 200 can be further improved, and the cutting edge of the film strip 200 can be more straight.

[0098] The elastic buffer connecting member 226 may, for example, be a spring that can be extended and contracted in the vertical direction.

[0099] As shown in Figures 4 to 6 Optionally, the pressing and cutting part 22 further comprises a second pressing block 227, wherein the second pressing block 227 is connected to the side wall of the first pressing block 224 facing the bearing table 23 and is located above the first end of the bearing table 23, the first end of the bearing table 23 being the end of the bearing table 23 facing the pressing and cutting part 22, and the second pressing block 227 and the first pressing block 224 form a cutting channel 228 for the cutter to pass through. As shown in Figure 6 The cutting channel 228 may, for example, be a groove provided on the side wall of the first pressing block 224 facing the second pressing block 227. Of course, the cutting channel 228 may, for example, be a groove provided on the side wall of the second pressing block 227 facing the first pressing block 224, or the cutting channel 228 may, for example, be a gap between the first pressing block 224 and the second pressing block 227.

[0100] When the mounting plate 223 moves away from the first pressure bearing seat 221, a second gap for the film strip to pass through is formed between the second pressing block 227 and the first end of the bearing table 23. When the mounting plate 223 moves close to the first pressure bearing seat 221, the second pressing block 227 presses the film strip 200 on the second side of the cutter 225 (i.e. the side of the cutter 225 close to the bearing table 23) to the first end of the bearing table 23.

[0101] That is, when the cutter 225 implements the cutting of the film strip 200, the first pressing block 224 presses the film strip 200 from the first side of the cutter 225, and the second pressing block 227 presses the film strip 200 from the second side of the cutter 225, so that the cutting position of the film strip 200 is tightened during the cutting process, thereby improving the cutting quality of the cutter 225 on the film strip 200, making the cutting edge of the film strip 200 straight, and finally ensuring that the two side edges of the film strip segment 201 are straight.

[0102] As shown in Figure 2 and Figure 7 Optionally, each film strip preparation mechanism 2 further comprises a clamping portion 25 located between the material feeding portion 21 and the pressing and cutting portion 22, the film strip 200 fed out by the material feeding portion 21 passes through the clamping portion 25 and the pressing and cutting portion 22 in sequence, and the clamping portion 25 is configured to clamp the film strip 200 when the pressing and cutting portion 22 cuts the film strip.

[0103] As shown in Figures 3 to 4 Optionally, the film strip preparation mechanism 2 further comprises a first translation driving portion 26, and the clamping portion 25 is connected to a movable component of the first translation driving portion 26, and the first translation driving portion 26 is configured to drive the clamping portion 25 to translate towards the pressing and cutting portion 22, so that the new free end of the film strip 200 generated by cutting extends out of the pressing and cutting portion 22. In this way, the pulling portion 24 can smoothly clamp the free end of the film strip 200 when stacking the film next time. When the pulling portion 24 completes clamping the free end of the film strip 200, the first translation driving portion 26 drives the clamping portion 25 to translate away from the pressing and cutting portion 22 to reset, so as to prepare for the next operation of pushing the new free end of the film strip 200 out of the pressing and cutting portion 22.

[0104] In another embodiment, the position of the clamping portion 25 is fixed, and the film strip preparation mechanism 2 further comprises a second translation driving portion, and the pressing and cutting portion 22 is connected to a movable component of the second translation driving portion. When the pressing and cutting portion 22 cuts the film strip 200 and releases the film strip 200, the second translation driving portion drives the pressing and cutting portion 22 to translate towards the clamping portion 25, so that the new free end of the film strip 200 generated by cutting extends out of the pressing and cutting portion 22, thereby facilitating the pulling portion 24 to smoothly clamp the free end of the film strip 200 when stacking the film next time. When the pulling portion 24 completes clamping the free end of the film strip 200, the second translation driving portion drives the pressing and cutting portion 22 to translate away from the clamping portion 25 to reset, so as to prepare for the next operation of pressing and cutting the film strip 200.

[0105] Of course, the film strip preparation mechanism 2 can also comprise the first translation driving portion 26 and the second translation driving portion. When the pressing and cutting portion 22 cuts the film strip 200 and releases the film strip 200, the first translation driving portion 26 and the second translation driving portion synchronously drive the clamping portion 25 and the pressing and cutting portion 22 to move towards the middle, so that the new free end of the film strip 200 generated by cutting extends out of the pressing and cutting portion 22, thereby facilitating the pulling portion 24 to smoothly clamp the free end of the film strip 200 when stacking the film next time. When the pulling portion 24 completes clamping the free end of the film strip 200, the first translation driving portion 26 and the second translation driving portion respectively drive the clamping portion 25 and the pressing and cutting portion 22 to translate to reset.

[0106] The first translation driving part 26 and the second translation driving part can each be a linear driving module, such as a cylinder driving module or a screw driving module.

[0107] As shown in Figure 4 Optionally, the clamping part 25 comprises a second pressure receiving seat 251, a second lifting driving member (not shown) and a third pressing block 252, wherein the second lifting driving member is located above the second pressure receiving seat 251, the third pressing block 252 is connected to the driving end of the second lifting driving member, the film strip 200 passes between the third pressing block 252 and the second pressure receiving seat 251, and the second lifting driving member is configured to drive the third pressing block 252 to lift or release the film strip 200 from the second pressure receiving seat 251.

[0108] When the traction part 24 pulls the film strip 200, the third pressing block 252 releases the film strip 200, so that the film strip 200 can freely pass through the clamping part 25. When the traction part 24 pulls the film strip 200 into position, the third pressing block 252 presses the film strip 200 to the second pressure receiving seat 251 to clamp the film strip 200 when the cutting and pressing part 22 cuts the film strip 200.

[0109] The second lifting driving member can be a cylinder, a screw motor or other linear driving device capable of driving the third pressing block 252 to lift.

[0110] In another optional embodiment, the cutting and pressing part 22 comprises a pressing assembly and a cutting assembly, and the film strip 200 discharged from the feeding part 21 passes through the pressing assembly and the cutting assembly in sequence. The cutting assembly is configured to cut the film strip 200 to obtain a film strip segment, and the pressing assembly is configured to press the film strip 200 when the cutting assembly cuts the film strip 200, so that the new free end of the film strip 200 generated by cutting is kept in the cutting assembly, preventing the film strip from retracting towards the feeding part.

[0111] After the cutting assembly completes the cutting of the film strip 200, the pressing assembly continues to press the film strip 200 and moves towards the cutting assembly, so that the new free end of the film strip 200 generated by cutting protrudes out of the cutting assembly, facilitating the traction part 24 to smoothly clamp the free end of the film strip 200 when the traction part 24 stacks the film next time.

[0112] When the traction part 24 completes the clamping of the free end of the film strip 200, the pressing assembly moves away from the cutting assembly to reset, preparing for the next time the new free end of the film strip 200 is pushed out of the cutting assembly.

[0113] It can be seen that by setting the pressing and cutting part 22 as an independent pressing assembly and cutting assembly, the pressing and cutting part 22 can not only press and cut the film strip, but also extend the new free end of the film strip 200 out of the pressing and cutting part 22. In this way, there is no need to set a special film strip pushing component (such as the clamping part 25 in the previous embodiment) to push the new free end of the film strip 200 out of the pressing and cutting part 22.

[0114] The pressing assembly can adopt the same structure as the clamping part 25 in the previous embodiment, or other existing pressing devices capable of pressing and releasing the film strip, for example, the pressing assembly includes a clamping jaw cylinder and upper and lower clamping blocks connected to two driving ends of the clamping jaw cylinder. The film strip 200 passes between the upper and lower clamping blocks. When the clamping jaw cylinder drives the upper and lower clamping blocks to move towards each other, the film strip is clamped. When the clamping jaw cylinder drives the upper and lower clamping blocks to move away from each other, the film strip 200 is released.

[0115] The cutting assembly can adopt various existing cutting devices capable of cutting the film strip, for example, the cutting assembly includes a pair of upper and lower cutting knives, and a driving member capable of driving at least one of the upper and lower cutting knives to move up and down. The film strip 200 passes between the upper and lower cutting knives. When the driving member drives at least one of the upper and lower cutting knives to move up or down towards the other, the film strip is cut.

[0116] As shown in Figures 2 to 4 Optionally, the carrying table 23 is connected to the moving component of the third translation driving part 27. The third translation driving part 27 is configured to drive the carrying table 23 to move, so as to switch the carrying table 23 between a cutting station close to the pressing and cutting part 22 and a feeding station close to the film strip conveying mechanism 3. When the carrying table 23 is switched to the cutting station, the traction part 24 pulls the film strip 200 onto the carrying table 23, the pressing and cutting part 22 presses and cuts the film strip 200, thereby obtaining the film strip segment 201. When the carrying table 23 is switched to the feeding station, the film strip conveying mechanism 3 picks up the film strip segment 201 from the carrying table 23.

[0117] By connecting the carrying table 23 to the moving component of the third translation driving part 27, the carrying table 23 can not only complete the cutting of the film strip 200 together with the pressing and cutting part 22 to obtain the film strip segment 201, but also automatically deliver the obtained film strip segment 201 to the feeding station, so that the film strip conveying mechanism 3 can pick up the film strip segment 201 nearby, thereby ensuring the working rhythm and improving the processing efficiency.

[0118] The third translation driving part 27 can adopt various existing linear driving modules, such as a cylinder driving module, a lead screw driving module, etc.

[0119] Optionally, two carrier platforms 23 can be configured, and the third translation drive unit 27 is configured to drive the two carrier platforms 23 to alternately move and switch between the cutting station and the loading station. When one carrier platform 23 is at the cutting station, the other carrier platform 23 is at the loading station. The two carrier platforms 23 alternately pick up film strips and alternately transport the picked-up film strips to the loading station, which can ensure that the film strip transport mechanism 3 can pick up film strips in a timely manner, prevent loading waiting, and thus further improve processing efficiency.

[0120] Of course, such as Figure 7 As shown, the support platform 23 can also be fixedly installed, with the first end of the support platform 23 close to the pressing and cutting part 22, and the second end of the support platform 23 close to the lamination station A of the cell conveying part 1. This arrangement allows the support platform 23 to cooperate with the pressing and cutting part 22 to cut the film strip 200 and obtain the film strip segment 201; on the other hand, it also allows the film strip transport mechanism 3 to pick up the film strip segment 201 from the support platform 23 nearby.

[0121] like Figure 4 As shown, optionally, the support platform 23 is provided with a number of spaced adsorption holes 231, which are used to adsorb the membrane strips pulled onto the support platform 23.

[0122] By setting adsorption holes 231 on the platform of the support table 23, the adsorption and positioning of the membrane strip 200 pulled onto the support table 23 is realized, preventing the membrane strip 200 from shifting position and causing the membrane strip transport mechanism 3 to be unable to smoothly pick up the membrane strip.

[0123] like Figure 4 As shown, optionally, the feeding section 21 includes a feeding roller 211 and several guide rollers 212. The feeding roller 211 is used to install the film strip roll and drive the film strip roll to rotate to feed out the film strip 200. The several guide rollers 212 are used to tension the film strip 200 and guide the film strip 200 toward the pressing and cutting section 22.

[0124] The traction unit 24 can be any existing traction device capable of gripping the free end of the film strip 200 and pulling the film strip 200 toward the support platform 23. For example, the traction unit 24 includes a robot arm and a gripper connected to the end of the robot arm. The robot arm drives the gripper to move, so that after the gripper grips the free end of the film strip 200 from the pressing and cutting part 22, it pulls the film strip 200 toward the support platform 23. Alternatively, the traction unit 24 includes a linear motor and a gripper connected to the drive end of the linear motor. The linear motor drives the gripper to move, so that after the gripper grips the free end of the film strip 200 from the pressing and cutting part 22, it pulls the film strip 200 toward the support platform 23.

[0125] Optionally, the battery piece conveying mechanism 1 is provided with a first heating assembly, which is configured to heat the battery piece 101 so that the film strip segment 201 is bonded to the battery piece 101 after releasing the adhesion.

[0126] By providing the first heating assembly on the battery piece conveying mechanism 1, the heating of the battery piece 101 is realized, so that the film strip segment 201 is bonded to the battery piece 101 after being heated by the high-temperature battery piece 101. By providing the second heating assembly on the film strip conveying mechanism 3, the film strip segment 201 is heated before being stacked on the battery piece 101, so that the film strip segment 201 can be bonded to the battery piece 101.

[0127] Since the battery piece 101 and the film strip segment 201 in the battery cell 100 have been bonded, the battery piece conveying mechanism 1 can avoid displacement between the film strip segment 201 and the battery piece 101 during conveying the battery cell 100 to the next station and subsequent laying of the battery cell 100.

[0128] Optionally, the battery piece conveying mechanism 1 includes a bottom plate and a conveying belt, the bottom plate is used to support the conveying surface of the conveying belt, and the conveying belt is used to convey the battery piece 101. The first heating assembly is provided on the bottom plate located at the film stacking station A and the film stacking station A. In this way, the battery piece 101 can be heated by the conveying belt before being conveyed to the film stacking station A and when reaching the film stacking station A, so that the temperature of the battery piece 101 at the film stacking station A is high enough to ensure that the film strip segment 201 stacked on the battery piece 101 is bonded to the battery piece 101. Of course, the first heating assembly can also be provided on the bottom plate located below the entire conveying surface of the conveying belt, so as to ensure that the film strip segment 201 stacked on the battery piece 101 is bonded to the battery piece 101. In addition, the conveying belt can continue to heat the battery cell 100 during conveying the battery cell 100 from the film stacking station A to the next station, so that the film strip segment 201 always maintains a certain temperature and is not bonded to the conveying belt, which facilitates the subsequent smooth removal of the battery cell 100 from the conveying belt.

[0129] The first heating assembly can be, for example, a heating rod inserted into the bottom plate, and the first heating assembly can also include a thermocouple for temperature detection.

[0130] As described in the foregoing embodiments, when the film strip conveying mechanism 3 comprises the first driving part 31 and the first adsorption strip 32, or when the film strip conveying mechanism 3 comprises the second driving part and the second adsorption strip, the second heating assembly may, for example, be a heating rod inserted into the first adsorption strip 32 or the second adsorption strip. Of course, the second heating assembly may also comprise a thermocouple for implementing temperature detection.

[0131] As shown in Figure 2 and Figure 7 Optionally, the conveying path of the battery piece conveying mechanism 1 is further provided with a shaping station B located in front of the film stacking station A. Correspondingly, the battery piece processing device in the embodiment of the application further comprises a shaping mechanism 4 arranged at the shaping station B. The shaping mechanism 4 comprises a shaping driving part, a first shaping part and a second shaping part. The first shaping part and the second shaping part are respectively located on both sides of the transmission direction of the battery piece conveying mechanism 1. The shaping driving part is configured to drive the first shaping part and / or the second shaping part to translate towards the battery piece conveying mechanism 1, so as to push the side edges of the battery piece 101 located at the shaping station B. Thus, the position of the battery piece 101 to be pasted with the film is corrected, so that the two side edges of the battery piece 101 are parallel to the first direction, and finally it is ensured that the film strip segment 201 stacked at the end of the battery piece 101 is parallel to the end edge of the battery piece 101.

[0132] Optionally, the first shaping part and the second shaping part each comprise at least two shaping wheels arranged side by side along the first direction. The shaping wheels are used to push the side edges of the battery piece.

[0133] Based on the same application concept, the application further provides a battery stringing device. Figure 8 Fig. 1 shows a structural schematic diagram of a battery stringing device in a first embodiment of the application, Figure 9 Fig. 2 shows a structural schematic diagram of a battery stringing device in a second embodiment of the application, Figure 10 Fig. 3 shows a structural schematic diagram of a battery stringing device in a third embodiment of the application, Figure 11 Fig. 4 shows a structural schematic diagram of a battery stringing device in a fourth embodiment of the application.

[0134] As shown in Figures 8 to 11 The battery stringing device in the embodiment of the application comprises a battery cell laying mechanism 20, a welding strip laying mechanism 30, a stringing conveying line 40, a stringing mechanism 50 and the battery piece processing device 10 in any of the foregoing embodiments, wherein:

[0135] The battery cell laying mechanism 20 is configured to pick up the battery cell 100 from the battery piece processing device 10, and is configured to cooperate with the welding strip laying mechanism 30 to lay the battery cell 100 and the welding strip group 300 on the stringing conveying line 40 according to a predetermined stringing rule.

[0136] The series connection conveying line 40 is configured to convey the laid battery unit 100 and the welding strip group 300 to the series connection station.

[0137] The series connection mechanism 50 is located at the series connection station, and is configured to connect the welding strip group 300 to the battery tab of the corresponding battery unit 100.

[0138] As can be seen, by arranging the battery tab processing device 10, the pre-preparation of the battery unit 100 composed of the battery tab 101 and the film strip segment 201 is realized. In this way, the battery unit laying mechanism 20 and the welding strip laying mechanism 30 can lay the battery unit 100 and the welding strip group 300 according to the series connection rule on the series connection conveying line 40, and finally the welding strip group 300 is welded to the battery tab of the corresponding battery unit 100 by the series connection mechanism 50, and the film strip segment 201 enters the corresponding inter-tab position.

[0139] The battery stringing device of the embodiment of the present application implements the series connection operation of the battery tab, and eliminates the subsequent film insertion operation, thereby improving the series connection efficiency and series connection quality of the battery string.

[0140] As shown in FIG. 1, the battery tab processing device 10 is arranged on the conveying line 40. Figures 8 to 9 As shown in FIG. 1, the battery tab processing device 10 is arranged on the conveying line 40.

[0141] Figure 8 In the embodiment shown in FIG. 1, the battery tab processing device 10 only includes one film strip preparation mechanism 2, and the film strip conveying mechanism 3 includes one conveying assembly. The conveying assembly stacks one film strip segment 201 prepared by the film strip preparation mechanism 2 on the battery tab 101 at the film stacking station A each time, thereby obtaining one battery unit 100.

[0142] Figure 9 In the embodiment shown in FIG. 1, the battery tab processing device 10 includes two film strip preparation mechanisms 2, and the film strip conveying mechanism 3 includes two conveying assemblies corresponding to the film strip preparation mechanisms 2. The two film strip preparation mechanisms 2 simultaneously prepare the film strip segments 201, and the two conveying assemblies synchronously pick up the film strip segments 201 from the corresponding film strip preparation mechanisms 2 and stack the picked film strip segments 201 on the two battery tabs 101 at the film stacking station A one by one, thereby obtaining two battery units 100.

[0143] Of course, in other embodiments, the battery tab processing device 10 can also include three, four or other numbers of film strip preparation mechanisms 2. Correspondingly, the film strip conveying mechanism 3 includes three, four or other numbers of conveying assemblies, so that the battery tab processing device 10 can prepare three, four or other numbers of battery units 100 each time, thereby finally improving the series connection efficiency of the battery stringing device.

[0144] like Figures 10 to 11 As shown, optionally, the cell processing device 10 is the cell processing device 10 in the second embodiment described above, and the support platform 23 is fixedly installed. Wherein:

[0145] Figure 10 In the embodiment shown, the cell processing device 10 includes only one film strip preparation mechanism 2, and the film strip transport mechanism 3 includes a transport component. Each time, the transport component stacks a film strip segment 201 prepared by the film strip preparation mechanism 2 onto the cell 101 at the film stacking station A, thereby obtaining a cell 100.

[0146] Figure 11 In the illustrated embodiment, the cell processing apparatus 10 includes two membrane strip preparation mechanisms 2, and the membrane strip transport mechanism 3 includes two transport components corresponding one-to-one with the membrane strip preparation mechanisms 2. The two membrane strip preparation mechanisms 2 simultaneously prepare membrane strip segments 201, and the two transport components synchronously pick up the membrane strip segments 201 from the corresponding membrane strip preparation mechanisms 2, and stack the picked-up membrane strip segments 201 one-to-one onto the two cells 101 at the stacking station A, thereby obtaining two cell units 100.

[0147] Of course, in other embodiments, the cell processing device 10 may also include 3, 4 or other numbers of film strip preparation mechanisms 2, and correspondingly, the film strip transport mechanism 3 includes 3, 4 or other numbers of transport components, so that the cell processing device 10 can prepare 3, 4 or other numbers of cell units 100 each time, thereby improving the stringing efficiency of the cell stringing device.

[0148] To enable those skilled in the art to more clearly understand the specific stringing process of the battery cell 100 and the ribbon assembly 300, the following will combine... Figure 12 A more detailed exemplary description is provided of the specific stringing process of the battery cell 100 and the ribbon assembly 300.

[0149] like Figure 12 As shown, the target battery string consists of 4 battery cells 100 and 5 ribbon groups 300 from front to back (e.g., Figure 12 The arrows in the image are sequentially connected, and the specific process of forming the string is as follows:

[0150] After laying out the first ribbon group 300, the battery cell 101 of the first battery unit 100 is stacked on the rear part of the first ribbon group 300, with the first end (the end without the film strip) of the battery cell 101 of the first battery unit 100 facing forward.

[0151] The front portion of the second ribbon group 300 is stacked on the cell of the first battery cell 100, so that the film strip 201 of the first battery cell 100 is sandwiched between the cell 101 of the first battery cell 100 and the second ribbon group 300.

[0152] The cell 101 of the second battery cell 100 is stacked on the rear portion of the second ribbon group 300, with the first end of the cell 101 of the second battery cell 100 facing forward, and the membrane strip 201 of the first battery cell 100 is at least partially located below the first end of the cell 101 of the second battery cell.

[0153] The front portion of the third ribbon group 300 is stacked on the cell 101 of the second battery cell 100, so that the membrane strip 201 of the second battery cell 100 is sandwiched between the cell 101 of the second battery cell 100 and the third ribbon group 300.

[0154] The cell 101 of the third battery cell 100 is stacked on the rear portion of the third ribbon group 300, with the first end of the cell 101 of the third battery cell 100 facing forward, and the membrane strip 201 of the second battery cell 100 is at least partially located below the first end of the cell 101 of the third battery cell 100.

[0155] The front portion of the fourth ribbon group 300 is stacked on the cell 101 of the third battery cell 100, so that the film strip 201 of the third battery cell 100 is sandwiched between the cell 101 of the third battery cell 100 and the fourth ribbon group 300.

[0156] The cell 101 of the fourth battery cell 100 is stacked on the rear portion of the fourth ribbon group 300, with the first end of the cell 101 of the fourth battery cell 100 facing forward, and the membrane strip 201 of the third battery cell 100 is at least partially located below the first end of the cell 101 of the fourth battery cell 100.

[0157] The front portion of the fifth ribbon group 300 is stacked on the cell 101 of the fourth battery cell 100, so that the film strip 201 of the fourth battery cell 100 is sandwiched between the cell 101 of the fourth battery cell 100 and the fifth ribbon group 300.

[0158] Thus, the task of... Figure 12 The battery strings in the illustrated embodiment are laid out in a string.

[0159] like Figures 8 to 11As shown, the optional battery cell laying mechanism 20 comprises a driving part 20a and a battery tab suction part 20b, wherein the driving part 20a is configured to drive the battery tab suction part 20b to move, so as to drive the battery tab suction part 20b to adsorb the battery tab 101 of the battery cell 100 and lay the battery cell 100 on the stringing conveying line 40. The driving part 20a can adopt various existing driving mechanisms capable of driving the battery tab suction part 20b to translate and lift, for example, it comprises a translation driving module and a lifting driving module, wherein the lifting driving module is connected to the moving part of the translation driving module, and the battery tab suction part 20b is connected to the moving part of the lifting driving module, the translation driving module is used to drive the battery tab suction part 20b to translate, and the lifting driving module is used to drive the battery tab suction part 20b to lift. The battery tab suction part 20b can adopt a suction disc group, for example.

[0160] The welding strip laying mechanism 30 can adopt various existing mechanisms capable of laying the welding strip group 300, which are not limited in the present application. For example, the welding strip laying mechanism directly clamps the end of the welding strip group and pulls out a certain length of the welding strip group from the roll, and after cutting the welding strip group, it continues to pull and lay the welding strip group with a predetermined length on the battery tab; or the welding strip laying mechanism can clamp both ends of the welding strip group with a predetermined length, and then transport and lay the welding strip group on the battery tab.

[0161] The stringing mechanism 50 can be at least one of a heating mechanism and a photocuring mechanism.

[0162] For the case of welding the battery tab only by the welding strip, only the heating mechanism can be used as the stringing mechanism 50, which can make the solder on the surface of the welding strip melt by heating the battery tab and the welding strip, so as to make the welding strip and the corresponding battery tab produce metallization connection, so as to complete the welding of the battery tab into a string. In addition, the heating mechanism can also heat the film strip segment, so that the film strip segment releases adhesion after being heated to be adhered between adjacent battery tabs.

[0163] For the case that the light-curing glue (such as UV glue) is applied on the surface of the battery tab, the photocuring mechanism is used to irradiate the battery tab and the welding strip, so that the light-curing glue can adhere the welding strip to the corresponding battery tab after curing, so as to complete the stringing of the battery tab. The heating mechanism can also be selectively provided, and on the basis that the light-curing glue adheres the welding strip to the corresponding battery tab, the solder on the surface of the welding strip can be heated and melted by the heating mechanism, so as to weld the welding strip to the corresponding battery tab, so as to further improve the connection strength between the welding strip and the battery tab, and finally improve the quality of the battery string.

[0164] For the case that the surface of the battery piece is coated with heat-curing glue, only the heating mechanism is needed as the series connection mechanism 50. The heating mechanism heats the battery piece and the solder strip, so that the heat-curing glue solidifies and bonds the solder strip to the corresponding battery piece. In addition, the heating mechanism can also heat the solder strip and the film strip segment, so that the solder on the surface of the solder strip melts and welds the solder strip to the corresponding battery piece, and so that the film strip segment releases adhesion after being heated and is bonded between adjacent battery pieces.

[0165] The application has been described in sufficient detail with certain specificities for purposes of complete disclosure. It is understood that the description in the embodiments is merely exemplary and that all changes that do not depart from the true spirit and scope of the application are intended to be included in the scope of the application. The scope of the application claimed is defined by the claims described, not by the above description of the embodiments. Some optional components in one embodiment can also be used in another embodiment without contradiction, and some preferred structures of the same component in one embodiment can also be applied to another embodiment. In addition, there may be slight differences in the names of some components in different embodiments, but these slight differences do not affect the understanding of the technical solutions of the application by those skilled in the art.

Claims

1. A battery cell processing apparatus, characterized in that, The solar cell processing device includes a solar cell conveying mechanism, n membrane strip preparation mechanisms, and a membrane strip transport mechanism, wherein: The cell conveying mechanism is configured to convey cells along a first direction, and at least one film stacking station is provided on the conveying path of the cell conveying mechanism. Each of the membrane strip preparation mechanisms is configured to dispense a membrane strip and cut the membrane strip to obtain a membrane strip segment of a predetermined length; The membrane strip transport mechanism is configured to pick up n membrane strip segments prepared from n membrane strip preparation mechanisms, and stack and bond the picked-up n membrane strip segments one by one to one end edge of n battery cells located at the stacking station to obtain n battery cells, where n≥1.

2. The battery cell processing apparatus as described in claim 1, characterized in that, Each of the membrane strip preparation mechanisms includes a feeding section, a pressing and cutting section, a support platform, and a traction section, wherein: The feeding section is configured to feed out the film strip, the pressing and cutting section is located between the feeding section and the support table, and the traction section is configured to clamp the free end of the film strip extending outward from the pressing and cutting section, and to traction the film strip of a predetermined length onto the support table. The pressing and cutting section is configured to press and cut the film strip to obtain the film strip segment, and the film strip transport mechanism is configured to pick up the film strip segment from the carrier platform.

3. The battery cell processing apparatus as described in claim 2, characterized in that, The clamping and cutting section includes a first pressure seat, a first lifting drive component, a mounting plate, a first clamping block, and a cutter, wherein: The first lifting drive component is disposed above the first pressure seat, the mounting plate is connected to the drive end of the first lifting drive component, the first clamping block and the cutter are both connected to the bottom of the mounting plate, wherein the cutter is located on the side of the first clamping block facing the support platform; The first lifting drive is configured to drive the mounting plate to lift or lower, so that the mounting plate moves away from or closer to the first pressure seat; When the mounting plate is away from the first pressure seat, a first gap is formed between the first clamping block and the cutter and the first pressure seat for the membrane strip to pass through. When the mounting plate approaches the first pressure seat, the first clamping block presses the membrane strip located on the first side of the cutter onto the first pressure seat, and the cutter cuts the membrane strip.

4. The battery cell processing apparatus as described in claim 3, characterized in that, The first clamping block is connected to the bottom of the mounting plate via a buffer connector, allowing it to float up and down. When the buffer connector is in its natural state, the bottom of the first clamping block is lower than the bottom of the cutter; When the first lifting drive unit drives the first pressing block to press the membrane strip against the first pressure seat, the buffer connector elastically contracts, and the cutter extends downward from the first pressing block to cut the membrane strip.

5. The battery cell processing apparatus as described in claim 3, characterized in that, The clamping and cutting part further includes a second clamping block, wherein: The second clamping block is connected to the side wall of the first clamping block facing the support platform and is located above the first end of the support platform, the first end of the support platform being the end of the support platform facing the clamping and cutting part, and a cutting channel for the cutter to pass through is formed between the second clamping block and the first clamping block; When the mounting plate is away from the first pressure seat, a second gap is formed between the second clamping block and the first end of the bearing platform for the membrane strip to pass through. When the mounting plate is close to the first pressure seat, the second clamping block presses the membrane strip located on the second side of the cutter against the first end of the support platform.

6. The battery cell processing apparatus as described in claim 2, characterized in that, Each of the film strip preparation mechanisms further includes a clamping part located between the feeding part and the pressing and cutting part. The film strip fed out by the feeding part passes through the clamping part and the pressing and cutting part in sequence. The clamping part is configured to clamp the film strip when the pressing and cutting part cuts the film strip. The film strip preparation mechanism further includes a first translation drive unit, the clamping part being connected to a movable component of the first translation drive unit, the first translation drive unit being configured to drive the clamping part to translate toward or away from the clamping and cutting part, so that a new free end of the film strip after cutting extends outward from the clamping and cutting part; and / or, the film strip preparation mechanism further includes a second translation drive unit, the clamping and cutting part being connected to a movable component of the second translation drive unit, the second translation drive unit being configured to drive the clamping and cutting part to translate toward or away from the clamping part, so that a new free end of the film strip after cutting extends outward from the clamping and cutting part.

7. The battery cell processing apparatus as described in claim 6, characterized in that, The clamping part includes a second pressure seat, a second lifting drive component, and a third clamping block, wherein: The second lifting drive is located above the second pressure seat, and the third pressing block is connected to the drive end of the second lifting drive. The membrane strip passes between the third pressing block and the second pressure seat. The second lifting drive is configured to drive the third pressing block to lift and lower, so as to press the membrane strip onto the second pressure seat or release the membrane strip.

8. The battery cell processing apparatus as described in claim 2, characterized in that, The pressing and cutting section includes a pressing assembly and a cutting assembly, and the film strip released by the feeding section passes through the pressing assembly and the cutting assembly in sequence; The cutting assembly is configured to cut the film strip to obtain the film strip segment, and the clamping assembly is configured to clamp the film strip when the cutting assembly cuts the film strip; The clamping assembly is also configured to move toward or away from the cutting assembly after the cutting assembly cuts the film strip, such that a new free end of the film strip produced by the cutting extends outward from the cutting assembly.

9. The battery cell processing apparatus as described in claim 2, characterized in that, The support platform is connected to the movable part of the third translation drive unit. The third translation drive unit is configured to drive the support platform to move, thereby causing the support platform to move and switch between the cutting station near the pressing and cutting unit and the loading station near the film strip conveying mechanism. When the support platform moves to the cutting station, the traction unit pulls the film strip onto the support platform; When the support platform moves to the loading station, the film strip transport mechanism picks up the film strip segment from the support platform.

10. The battery cell processing apparatus as described in claim 9, characterized in that, The carrier platform is configured to be two, and the third translation drive unit is configured to drive the two carrier platforms to move and switch alternately between the cutting station and the loading station. When one carrier platform is located at the cutting station, the other carrier platform is located at the loading station.

11. The battery cell processing apparatus as described in claim 2, characterized in that, The support platform is fixedly installed, with its first end close to the pressing and cutting part and its second end close to the lamination station of the battery cell conveying part.

12. The battery cell processing apparatus as claimed in claim 2, characterized in that, The support platform has a number of spaced-apart adsorption holes, which are used to adsorb the membrane strips that are pulled onto the support platform.

13. The battery cell processing apparatus as claimed in claim 1, characterized in that, The battery cell conveying mechanism is equipped with a first heating component, configured to heat the battery cells, causing the film strips stacked on the battery cells to release their adhesiveness and adhere to the battery cells; or... The membrane strip transport mechanism is equipped with a second heating component, which is configured to heat the membrane strip segment so that the membrane strip segment releases its adhesiveness and adheres to the battery cell.

14. The battery cell processing apparatus as described in claim 13, characterized in that, The battery cell conveying mechanism includes a base plate and a conveyor belt. The base plate is used to support the conveying surface of the conveyor belt, and the conveyor belt is used to convey battery cells. The first heating component is provided on the base plate located at the film stacking station and the front plate of the film stacking station; or, the first heating component is provided on the base plate located below the entire conveying surface of the conveyor belt.

15. The battery cell processing apparatus as claimed in claim 1, characterized in that, The battery cell conveying mechanism also has a regularization station located in front of the lamination station on its conveying path. The cell processing apparatus further includes a straightening mechanism disposed at the straightening station. The straightening mechanism includes a straightening drive unit, a first straightening unit, and a second straightening unit. The first straightening unit and the second straightening unit are respectively located on both sides of the transmission direction of the cell conveying mechanism. The straightening drive unit is configured to drive the first straightening unit and / or the second straightening unit to translate toward the cell conveying mechanism to push the side of the cell located at the straightening station.

16. The battery cell processing apparatus as claimed in claim 1, characterized in that, The membrane strip transport mechanism includes n transport components, each corresponding to one of the n membrane strip preparation mechanisms. Each transport component includes a first driving part and a first adsorption strip. The first driving part is configured to drive the first adsorption strip to move, thereby adsorbing the membrane strip segment from the corresponding membrane strip preparation mechanism and stacking the adsorbed membrane strip segment onto one edge of a solar cell located at the stacking station; or... The membrane strip transport mechanism includes a second driving unit and n second adsorption strips, with each of the n second adsorption strips corresponding to one of the n membrane strip preparation mechanisms. The second driving unit is configured to drive the n second adsorption strips to move, thereby causing the second adsorption strips to adsorb the membrane strip segments from the corresponding membrane strip preparation mechanism, and to stack the adsorbed membrane strip segments onto one edge of one of the n battery cells located at the stacking station.

17. A battery stringing device, characterized in that, The battery stringing equipment includes a battery cell laying mechanism, a ribbon laying mechanism, a stringing conveyor line, a stringing mechanism, and a battery cell processing device as described in any one of claims 1 to 16, wherein: The battery cell laying mechanism is configured to pick up the battery cells from the battery cell processing device and to cooperate with the ribbon laying mechanism to lay the battery cells and ribbon groups onto the stringing conveyor line according to a predetermined stringing rule. The tandem conveyor line is configured to transport the laid-up battery cells and the welding ribbon assembly to the tandem work station; The series connection mechanism is located at the series connection station and is configured to connect the solder ribbon group to the corresponding battery cell. The series connection mechanism is at least one of a heating mechanism and a photocuring mechanism.

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