Battery piece preprocessing device and battery string forming equipment

Abstract

The utility model provides a battery piece pretreatment device and battery string forming equipment. The battery piece pretreatment device comprises a battery piece conveying mechanism, n film strip supply mechanisms and n film strip stacking mechanisms. The battery piece conveying mechanism conveys battery pieces in the first direction, and the battery piece conveying mechanism is provided with a film stacking station. Each film strip supply mechanism is configured to supply one film strip and pull the film strip to the position above the film stacking station in the second direction. The n film strip stacking mechanisms adsorb the film strips which are pulled out by the corresponding film strip supply mechanisms and located above the film stacking station, and the film strip supply mechanisms are further used for cutting off the film strips adsorbed to the corresponding film strip stacking mechanisms to obtain film strip sections. The n film strip stacking mechanisms are further used for bonding the film strip sections to the edges of one ends of the n battery pieces at the film stacking station, and n battery units are obtained. And in the subsequent cell string forming process, the cell units and the solder strip groups are laid into strings according to a preset string forming rule, so that the film strip sections can enter the corresponding inter-piece positions.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell production equipment, specifically a cell pretreatment device and a cell stringing device. Background Technology

[0002] A battery string is formed by connecting several battery cells in series via solder strips. Figure 1 A common type of battery string is shown, in which the front half of the solder ribbon group 300 is stacked and welded to the upper surface of the front (e.g., right) battery cell 101 in two adjacent battery cells 101, while the rear half of the solder ribbon group 300 is welded to the lower surface of the rear (e.g., left) battery cell 101. When the photovoltaic module made from this battery string is subsequently laminated, localized stress is generated at the edge contact between the solder ribbon group 300 and the battery cell 101, which can easily lead to microcracks in the battery cell 101.

[0003] like Figure 1 As shown, a feasible solution to the above problem is to set a membrane strip 201 between two adjacent battery cells 101 during the battery string production process, so as to buffer the stress at the edge contact between the welding strip group 300 and the battery cell 101 through the membrane strip 201.

[0004] To fabricate battery strings with membrane strips between adjacent cells, the conventional process involves first welding the cells to a ribbon assembly to form a battery string, and then inserting the membrane strips between the cells. Since the cells and ribbons are already welded, one of the adjacent cells needs to be lifted to create an insertion gap before the membrane strip is inserted. However, lifting the cell can easily cause microcracks or fragmentation, affecting the string quality. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a solar cell pretreatment apparatus, which employs the following technical solution:

[0006] A solar cell pretreatment apparatus includes a solar cell conveying mechanism, n membrane strip supply mechanisms, and n membrane strip stacking mechanisms, wherein:

[0007] The cell conveying mechanism is configured to convey cells along a first direction, and at least one lamination station is provided on the conveying path of the cell conveying mechanism.

[0008] Each membrane strip supply mechanism is configured to supply one membrane strip and to pull a membrane strip of a predetermined length above the film stacking station along a second direction, wherein the second direction is perpendicular to the first direction;

[0009] n membrane strip stacking mechanisms are set up one-to-one with n membrane strip supply mechanisms. The n membrane strip stacking mechanisms are configured to adsorb the membrane strips pulled out by the corresponding membrane strip supply mechanisms and located above the stacking station. The membrane strip supply mechanisms are also configured to cut the membrane strips adsorbed on the corresponding membrane strip stacking mechanisms to obtain membrane strip segments. The n membrane strip stacking mechanisms are also configured to stack the membrane strip segments and bond them to one edge of n battery cells located at the stacking station to obtain n battery cells.

[0010] Alternatively, n membrane strip stacking mechanisms are set up one-to-one with n membrane strip supply mechanisms. The n membrane strip stacking mechanisms are configured to adsorb the membrane strips pulled out by the corresponding membrane strip supply mechanism and located above the stacking station, stack the membrane strips and attach them to one edge of the n battery cells located at the stacking station. The membrane strip supply mechanism is also configured to cut the membrane strips attached to the battery cells by the corresponding membrane strip stacking mechanism to obtain n battery cells.

[0011] The cell pretreatment apparatus provided in this application, after automatically cutting n film strips into segments, bonds the n film strips to one edge of n cells located at the stacking station, thereby obtaining n cell units. Alternatively, it can stack the n film strips and bond them to one edge of the n cells located at the stacking station before cutting the n film strips, thereby obtaining n cell units. In this way, during the subsequent cell stringing process, the cell units and solder ribbons are strung together according to a predetermined stringing rule, ensuring that all film strip segments are positioned at their corresponding cell locations.

[0012] As can be seen, by using the cell pretreatment device of this application to first attach the film strip to the cell, the operation of lifting the cell to insert the film is eliminated during the subsequent stringing process. This can avoid the risk of cell microcracks or fragments caused by the film insertion operation and ensure the quality of the cell stringing.

[0013] In some embodiments, each membrane strip supply mechanism includes a feeding section, a pressing and cutting section, and a pulling section, wherein: the feeding section is configured to release the membrane strip, the pulling section is configured to clamp the free end of the membrane strip extending outward from the pressing and cutting section, and to pull the membrane strip of a predetermined length above the stacking station; the pressing and cutting section is configured to press and cut the membrane strip after the membrane strip is adsorbed by the membrane strip stacking mechanism or after the membrane strip is bonded to the battery cell.

[0014] The pulling section pulls the membrane strip of a predetermined length above the stacking station, allowing the membrane strip stacking mechanism to hold the membrane strip and bond it to the solar cell, or to bond the membrane strip to the solar cell after the pressing and cutting section cuts it. Furthermore, the pressing and cutting section presses the membrane strip during cutting, ensuring that the newly free end of the membrane strip is held within the pressing and cutting section, preventing the membrane strip from retracting towards the feeding section.

[0015] In some embodiments, the clamping and cutting section includes a first pressure seat, a first lifting drive, a mounting plate, a first clamping block, and a cutter, wherein: the first lifting drive is disposed above the first pressure seat, the mounting plate is connected to the drive end of the first lifting drive, and 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 cell conveying mechanism; the first lifting drive is configured to drive the mounting plate to lift and lower, so that the mounting plate moves away from or closer to the first pressure seat; when the mounting plate moves away from the first pressure seat, a gap is formed between the first clamping block and the cutter and the first pressure seat for the film strip to pass through; when the mounting plate moves closer to the first pressure seat, the first clamping block presses the film strip located on the first side of the cutter onto the first pressure seat, and the cutter cuts the film strip.

[0016] By configuring the clamping and cutting section, only one lifting drive is needed to enable it to both clamp and cut the membrane strip, reducing the cost and structural complexity of the clamping and cutting section. Furthermore, since the cutter is located on the side of the first clamping block facing the cell conveying mechanism, after the membrane strip is cut, the new free end of the membrane strip is clamped and held on the clamping and cutting section.

[0017] In some embodiments, the first clamping block is connected to the bottom of the mounting plate in a floating manner via a buffer connector; 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 drives the first clamping block to press the film strip against the first pressure seat, the buffer connector retracts, and the cutter extends downwards from the first clamping block to cut the film strip.

[0018] With this configuration, the first pressing block first elastically presses the membrane strip onto the first pressure seat, and then the cutter extends out from the first pressing block to cut the membrane strip, thereby improving the cutting effect of the cutter on the membrane strip.

[0019] In some embodiments, each film strip supply mechanism further includes a clamping portion located between the feeding portion and the pressing and cutting portion, wherein the film strip released from the feeding portion passes sequentially through the clamping portion and the pressing and cutting portion, and the clamping portion is configured to clamp the film strip when the pressing and cutting portion cuts the film strip; the film strip supply mechanism further includes a first translation drive portion, the clamping portion being connected to a movable part of the first translation drive portion, the first translation drive portion being configured to drive the clamping portion to translate toward or away from the pressing and cutting portion, such that a new free end of the film strip after cutting extends outward from the pressing and cutting portion; and / or, the film strip supply mechanism further includes a second translation drive portion, the pressing and cutting portion being connected to a movable part of the second translation drive portion, the second translation drive portion being configured to drive the pressing and cutting portion to translate toward or away from the clamping portion, such that a new free end of the film strip after cutting extends outward from the pressing and cutting portion.

[0020] By providing a clamping part between the feeding section and the pressing and cutting section, the clamping part holds the film strip when the pressing and cutting section cuts it. After the pressing and cutting section cuts the film strip, the clamping part moves towards the pressing and cutting section, or the pressing and cutting section moves towards the clamping part, or the clamping part and the pressing and cutting section move towards each other synchronously. This allows the new free end of the film strip, generated after cutting, to extend outward from the pressing and cutting section, facilitating the smooth clamping of the free end of the film strip during the next film stacking by the pulling section.

[0021] In some embodiments, the clamping portion includes a second pressure seat, a second lifting drive member, and a second pressing block, wherein: the second lifting drive member is located above the second pressure seat, the second pressing block is connected to the drive end of the second lifting drive member, the membrane strip passes through between the second pressing block and the second pressure seat, and the second lifting drive member is configured to drive the second pressing block to lift and lower, so as to press the membrane strip onto the second pressure seat or release the membrane strip.

[0022] A simple clamping part is provided. When the pulling part pulls the film strip, the clamping part releases the film strip, allowing it to pass freely through the clamping part. When the pulling part pulls the film strip into position and the pressing and cutting part cuts the film strip, the clamping part clamps the film strip.

[0023] In some embodiments, the clamping and cutting section includes a clamping assembly and a cutting assembly, wherein the film strip discharged from the feeding section passes sequentially through the clamping assembly and the cutting assembly; the cutting assembly is configured to cut the film strip, and the clamping assembly is configured to clamp the film strip when the cutting assembly cuts the film strip; the clamping assembly is further 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.

[0024] By configuring the clamping and cutting section to include a clamping assembly and a cutting assembly, when the cutting assembly cuts the film strip, the clamping assembly clamps the film strip, thereby keeping the newly free end of the film strip produced by the cut within the cutting assembly and preventing the film strip from retracting towards the feeding section. Furthermore, after the cutting assembly completes the cutting of the film strip, the clamping assembly can move towards the cutting assembly, allowing the newly free end of the film strip to extend outward from the cutting assembly, facilitating smooth clamping of the free end of the film strip by the pulling section during the next film stacking.

[0025] In some embodiments, the cell conveying mechanism is provided with a first heating component configured to heat the cell, so that the film strip stacked on the cell releases its adhesiveness and adheres to the cell; or, the film strip stacking mechanism is provided with a second heating component configured to heat the film strip, so that the film strip releases its adhesiveness and adheres to the cell.

[0026] By incorporating a first heating component on the cell conveying mechanism, the cells are heated. The high temperature of the cells conveyed to the lamination station allows the film strips stacked on top of the cells to adhere to them after being heated by the high-temperature cells. Furthermore, a second heating component on the film strip stacking mechanism heats the film strips adsorbed onto them before stacking them onto the cells, ensuring adhesion. Since the cells and film strips within the battery unit are already bonded, displacement between the film strips and cells is prevented during the cell conveying process to subsequent workstations and during the subsequent stringing of the battery units.

[0027] In some embodiments, the cell conveying mechanism includes a base plate and a conveyor belt. The base plate supports the conveying surface of the conveyor belt, and the conveyor belt conveys the cells. A first heating component is provided on the base plate located at the lamination station and on the base plate located before the lamination station. Alternatively, the first heating component is provided on the base plate located below the entire conveying surface of the conveyor belt.

[0028] By installing first heating components on the base plate located at the lamination station and the stage before the lamination station, the solar cells can be heated by the conveyor belt before being transported to the lamination station and upon arrival at the lamination station. This ensures that the temperature of the solar cells at the lamination station is sufficiently high, ultimately guaranteeing that the film strips stacked on the solar cells adhere to the solar cells. Furthermore, by installing first heating components on the base plate below the entire conveyor surface of the conveyor belt, it is ensured that the film strips stacked on the solar cells adhere to the solar cells. In addition, as the solar cells continue to be transported from the lamination station to the next stage, the conveyor belt can continue to heat the solar cells, maintaining a constant temperature for the film strips and preventing them from sticking to the conveyor belt, thus facilitating the subsequent removal of the solar cells from the conveyor belt.

[0029] In some embodiments, each membrane strip stacking mechanism includes a first driving part and an adsorption strip, the adsorption strip extending along a second direction, the first driving part being configured to drive the adsorption strip to move, thereby causing the adsorption strip to adsorb membrane strips located above the membrane stacking station, and to stack and bond the adsorbed membrane strips to the battery cells located at the membrane stacking station.

[0030] An adsorption strip extending in the second direction is used as an adsorption component to ensure that the membrane strip of a predetermined length, which is pulled to the stacking station, can be adsorbed in all directions, preventing the membrane strip from bending or sagging, which would ultimately cause wrinkles after the membrane strip is adhered to the battery cell.

[0031] In some embodiments, a sizing station located before the lamination station is further provided on the conveying path of the cell conveying mechanism; the cell pretreatment device further includes a sizing mechanism provided at the sizing station, the sizing mechanism including a sizing drive unit, a first sizing unit and a second sizing unit, wherein the first sizing unit and the second sizing unit are respectively located on both sides of the conveying direction of the conveying mechanism, and the sizing drive unit is configured to drive the first sizing unit and / or the second sizing unit to translate toward the conveying mechanism to push the side of the cell located at the sizing station.

[0032] By setting up a straightening station before the lamination station and a straightening mechanism at the straightening station, the position of the battery cell to be laminated is straightened, so that the two sides of the battery cell are parallel to the first direction, and finally ensure that the film strip stacked to one end of the battery cell is parallel to the end edge of the battery cell.

[0033] This application also provides a battery stringing device, which includes a battery cell laying mechanism, a ribbon laying mechanism, a stringing conveyor line, a stringing mechanism, and the battery cell pretreatment device described in any one of the above-mentioned embodiments, wherein:

[0034] The battery cell laying mechanism is configured to pick up battery cells from the battery cell pretreatment device and to cooperate with the ribbon laying mechanism to lay the battery cells and ribbons onto the stringing conveyor line according to a predetermined stringing rule.

[0035] The tandem conveyor line is configured to transport the laid-out battery cells and welding ribbons to the tandem station;

[0036] The series connection mechanism is located at the series connection station and is configured to connect the solder strip group to the corresponding solar cell. The series connection mechanism is at least one of a heating mechanism and a photocuring mechanism.

[0037] By setting up a cell pretreatment device, the pre-fabrication of battery cells consisting of cells and membrane strips is achieved. In this way, the cell laying mechanism and the ribbon laying mechanism can lay the cell units and ribbons onto the stringing conveyor line according to a stringing rule. Finally, the stringing mechanism welds the ribbons to the corresponding cell cells, ensuring that the membrane strips are all positioned at their corresponding cell locations. Compared to existing battery stringing methods, using the battery stringing equipment of this application to string the cells eliminates the subsequent membrane insertion operation, thereby improving the stringing efficiency and quality of the battery strings. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of a battery string with membrane strips.

[0039] Figure 2 This is a schematic diagram of the structure of the battery cell pretreatment device in the embodiments of this application;

[0040] Figure 3 for Figure 2 A magnified view of region C in the image;

[0041] Figure 4 This is a schematic diagram of the battery stringing device in the first embodiment of this application;

[0042] Figure 5 This is a schematic diagram of the battery stringing device in the second embodiment of this application;

[0043] Figure 6 This is a schematic diagram of the battery string in the embodiments of this application.

[0044] Figures 1 to 6 Includes:

[0045] Solar cell pretreatment device 10;

[0046] Cell delivery mechanism 1;

[0047] Membrane strip supply mechanism 2: feeding part 21, pressing and cutting part 22, pulling part 23, clamping part 24, first translation drive part 25, feeding roller 211, guide roller 212, first pressure seat 221, first lifting drive component 222, mounting plate 223, first pressing block 224, cutter 225, buffer connector 226, second pressure seat 241, second pressing block 242;

[0048] Membrane strip stacking mechanism 3: First driving part 31, adsorption strip 32;

[0049] Regulated organization 4;

[0050] Battery cell laying mechanism 20, welding strip laying mechanism 30, series conveyor line 40, series mechanism 50;

[0051] Battery cell 100, battery cell 101, membrane strip segment 201, membrane strip 200, welding ribbon group 300, drive unit 20a, battery cell suction unit 20b;

[0052] Film stacking station A, and sizing station B. Detailed Implementation

[0053] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0054] As described in the background section, the conventional method for fabricating battery strings with membrane strips between adjacent cells involves first welding the cells to a ribbon assembly to form a battery string, and then inserting the membrane strips into the spaces between the cells. Since the cells and ribbons are already welded, one of the adjacent cells needs to be lifted to create an insertion gap before the membrane strip can be inserted. However, lifting the cell can easily cause microcracks or fragmentation, affecting the string quality.

[0055] To address the aforementioned issues, this application provides a cell pretreatment apparatus capable of pre-stacking and bonding membrane strips to the cells to obtain cell units. During subsequent cell stringing, the cell units and bonding tapes are laid out according to a predetermined stringing rule, ensuring that the membrane strips are positioned at their corresponding inter-cell locations. This eliminates the need for lifting the cells to insert the membrane during subsequent stringing, avoiding the risk of microcracks or fragmentation caused by the membrane insertion process and guaranteeing the quality of the cell stringing.

[0056] like Figures 2 to 3 As shown, the solar cell pretreatment device 10 in this embodiment includes a solar cell conveying mechanism 1, n film strip supply mechanisms 2, and n film strip stacking mechanisms 3, wherein:

[0057] The cell conveying mechanism 1 is configured to convey cell 101 along a first direction (such as the X direction), and at least a film stacking station A is provided on the conveying path of the cell conveying mechanism 1.

[0058] Each membrane strip supply mechanism 2 is configured to supply one membrane strip 200 and to pull the membrane strip 200 of a predetermined length above the film stacking station A along a second direction (such as the Y direction), wherein the second direction is perpendicular to the first direction.

[0059] n membrane strip stacking mechanisms 3 are arranged in a one-to-one correspondence with n membrane strip supply mechanisms 2. The n membrane strip stacking mechanisms 3 are configured to adsorb the membrane strips 200 pulled out by the corresponding membrane strip supply mechanism 2 and located above the membrane stacking station A. The membrane strip supply mechanism 2 is also configured to cut the membrane strips 200 adsorbed on the corresponding membrane strip stacking mechanism 3 to obtain membrane strip segments 201. The n membrane strip stacking mechanisms 3 are also configured to stack and bond the membrane strip segments 201 to one end edge of the n battery cells 101 located at the membrane stacking station A to obtain n battery cells 100.

[0060] In other words, after the membrane strip stacking mechanism 3 adsorbs the membrane strip 200 that has been pulled to the stacking station A by the membrane strip supply mechanism 2, the membrane strip supply mechanism 2 first cuts the membrane strip 200 to obtain membrane strip segment 201. The membrane strip stacking mechanism 3 then stacks the adsorbed membrane strip segment 201 and attaches it to one end edge of the battery cell 101 located at the stacking station A, thereby obtaining the battery cell 100.

[0061] Alternatively, n membrane strip stacking mechanisms 3 are set up one-to-one with n membrane strip supply mechanisms 2. The n membrane strip stacking mechanisms 3 are configured to adsorb the membrane strips 200 pulled out by the corresponding membrane strip supply mechanism 2 and located above the stacking station A, stack the membrane strips 200 and attach them to one end edge of the n battery cells 10 located at the stacking station. The membrane strip supply mechanism 2 is also configured to cut the membrane strips 200 attached to the battery cells 101 by the corresponding membrane strip stacking mechanism 3 to obtain n battery cells.

[0062] In other words, after the membrane strip stacking mechanism 3 adsorbs the membrane strip 200 that has been pulled to the stacking station A by the membrane strip supply mechanism 2, it first stacks the adsorbed membrane strip 200 and attaches it to one edge of the battery cell 101 located at the stacking station A. Then the membrane strip supply mechanism 2 cuts the membrane strip 200 attached to the battery cell 101 to obtain the battery cell 100.

[0063] As can be seen, the battery cell pretreatment device 10 in this embodiment automatically cuts n film strips into segments, then bonds the n film strip segments to one edge of n battery cells located at the stacking station, thereby obtaining n battery cells. Alternatively, after stacking and bonding the n film strips at the tension point to one edge of the n battery cells located at the stacking station, the n film strips are then cut to obtain n battery cells.

[0064] The cell pretreatment apparatus 10 in this embodiment of the application realizes the pre-preparation of the cell unit 100 composed of cell 101 and film strip 201. In this way, during the subsequent cell stringing process, the cell unit 100 and the ribbon assembly are laid in a string according to a predetermined stringing rule, so that the film strips are all placed in the corresponding cell positions.

[0065] By using the cell pretreatment device 10 in this application embodiment, the operation of lifting the cell to insert the membrane during the subsequent stringing process is eliminated, thereby avoiding the risk of cell microcracks or fragments caused by the membrane insertion operation and ensuring the quality of the stringed cells.

[0066] Figure 2 The cell pretreatment device 10 in the illustrated embodiment includes only one film strip supply mechanism 2 and one film strip stacking mechanism 3, i.e., n is 1. The cell pretreatment device 10 performs film stacking on one cell 101 transported to the film stacking station A each time, thereby obtaining one cell unit 100. To improve processing efficiency, in other embodiments, two, three, or more film strip supply mechanisms 2 and film strip stacking mechanisms 3 can be provided, i.e., n is 2, 3, or a larger value. In this way, the cell pretreatment device 10 can perform film stacking on two, three, or more cell 101 transported to the film stacking station A each time, thereby obtaining two, three, or more cell units 100.

[0067] like Figure 2 As shown, optionally, each membrane strip supply mechanism 2 includes a feeding section 21, a pressing and cutting section 22, and a pulling section 23, wherein: the feeding section 21 is configured to release the membrane strip 200, the pulling section 23 is configured to clamp the free end of the membrane strip 200 extending outward from the pressing and cutting section 22, and to pull the membrane strip 200 of a predetermined length above the stacking station A. The pressing and cutting section 22 is configured to press the membrane strip 200 after the membrane strip stacking mechanism 3 adsorbs the membrane strip 200 or adheres the membrane strip 200 to the battery cell 101, and to cut the membrane strip 200.

[0068] As can be seen, by pulling the tensioning part 23, the membrane strip 200 of a predetermined length is pulled to the top of the stacking station A, so that the membrane strip stacking mechanism 3 can adsorb the membrane strip 200 of a predetermined length located above the stacking station A and bond the adsorbed membrane strip 200 to the battery cell 101, or after the pressing and cutting part 22 cuts the adsorbed membrane strip 200, the obtained membrane strip segment 201 is then bonded to the battery cell 101.

[0069] Furthermore, the clamping and cutting section 22 can clamp the film strip 200 when cutting the film strip 200, thereby keeping the new free end of the film strip 200 after cutting within the clamping and cutting section 22 and preventing the film strip 200 from retracting toward the feeding section 21.

[0070] Of course, other membrane strip supply mechanisms 2 can also be used, as long as they can pull the membrane strip 200 of a predetermined length to the membrane stacking station A, and can adsorb the membrane strip 200 in the membrane strip stacking mechanism 3 or cut the membrane strip 200 after bonding it to the battery cell 101.

[0071] like Figures 2 to 3 As shown, optionally, the clamping and cutting part 22 includes a first pressure seat 221, a first lifting drive member 222, a mounting plate 223, a first clamping block 224, and a cutter 225, wherein: the first lifting drive member 222 is disposed above the first pressure seat 221, the mounting plate 223 is connected to the drive end of the first lifting drive member 222, and the first clamping block 224 and the cutter 225 are both connected to the bottom of the mounting plate 223, wherein the cutter 225 is located on the side of the first clamping block 224 facing the battery cell conveying mechanism 1.

[0072] The first lifting drive 222 is configured to drive the mounting plate 223 to rise or fall, so that the mounting plate 223 moves away from or near the first pressure seat 221. When the mounting plate 223 moves away from the first pressure seat 221, a gap is formed between the first clamping block 224 and the cutter 225 and the first pressure seat 221, allowing the film strip 200 to pass through. When the mounting plate 223 moves near the first pressure seat 221, the first clamping block 224 presses the film strip 200 located on the first side of the cutter 225 (i.e., the side of the cutter away from the cell conveying mechanism 1) against the first pressure seat 221, and the cutter 225 cuts the film strip 200.

[0073] As can be seen, by configuring the clamping and cutting part 22 as described above, only one lifting drive is needed to enable the clamping and cutting part 22 to both clamp the membrane strip 200 and cut it, thereby reducing the cost and structural complexity of the clamping and cutting part 22. Furthermore, since the cutter 225 is located on the side of the first clamping block 224 facing the cell conveying mechanism 1, when the membrane strip 200 is cut, the new free end of the membrane strip 200 is clamped and held on the clamping and cutting part 22, thereby preventing the membrane strip 200 from retracting.

[0074] The first lifting drive component 222 can be any existing linear drive device capable of driving the mounting plate 223 to lift, such as a cylinder or a lead screw module.

[0075] like Figures 2 to 3 As shown, optionally, the first clamping block 224 is connected to the bottom of the mounting plate 223 in a floating manner via the buffer connector 226. When the buffer connector 226 is in its natural state, the bottom of the first clamping block 224 is lower than the bottom of the cutter 225.

[0076] With this configuration, when the first lifting drive 222 drives the mounting plate 223 to descend, the first pressing block 224 first presses the membrane strip 200 onto the first pressure seat 221. As the mounting plate 223 continues to descend, the buffer connector 226 continuously contracts, thereby causing the first pressing block 224 to elastically press the membrane strip 200 onto the first pressure seat 221. Finally, the cutter 225 extends downward from the first pressing block 224 to cut the membrane strip.

[0077] In other words, the first pressing block 224 first elastically presses the membrane strip onto the first pressure seat 221, and then the cutter 225 extends out of the first pressing block 224 to cut the membrane strip 200. This can further improve the cutting effect of the cutter 225 on the membrane strip 200, such as making the cut of the membrane strip 200 neater.

[0078] The buffer connector 226 may be, for example, a spring that can extend and retract in the vertical direction.

[0079] like Figures 2 to 3As shown, optionally, each film strip supply mechanism 2 also includes a clamping part 24, which is located between the feeding part 21 and the pressing and cutting part 22. The film strip 200 released from the feeding part 21 passes through the clamping part 24 and the pressing and cutting part 22 in sequence. The clamping part 24 is configured to clamp the film strip 200 when the pressing and cutting part 22 cuts the film strip.

[0080] like Figure 3 As shown, optionally, the film strip supply mechanism 2 also includes a first translation drive unit 25, and a clamping unit 24 is connected to the movable part of the first translation drive unit 25. When the pressing and cutting unit 22 cuts the film strip, the first translation drive unit 25 drives the clamping unit 24 to translate toward the pressing and cutting unit 22, so that the new free end of the film strip 200 generated by the cutting extends outward from the pressing and cutting unit 22, thereby facilitating the pulling unit 23 to smoothly clamp the free end of the film strip 200 during the next film stacking. After the pulling unit 23 completes the clamping of the free end of the film strip 200, the first translation drive unit 25 drives the clamping unit 24 to translate and reset away from the pressing and cutting unit 22, preparing for the next push of the new free end of the film strip 200 outward from the pressing and cutting unit 22.

[0081] In another embodiment, the clamping part 24 is fixed in position, and the film strip supply mechanism 2 further includes a second translation drive part, with the pressing and cutting part 22 connected to the movable part of the second translation drive part. When the pressing and cutting part 22 cuts the film strip 200 and releases the film strip 200, the second translation drive part drives the pressing and cutting part 22 to translate toward the clamping part 24, so that the new free end of the film strip 200 generated by the cutting extends outward from the pressing and cutting part 22, thereby facilitating the pulling part 23 to smoothly clamp the free end of the film strip 200 during the next film stacking. After the pulling part 23 completes the clamping of the free end of the film strip 200, the second translation drive part drives the pressing and cutting part 22 to translate and reset away from the clamping part 24, preparing for the subsequent pressing and cutting operation of the film strip 200.

[0082] Of course, the film strip supply mechanism 2 may also include a first translation drive unit 25 and a second translation drive unit. After the clamping and cutting unit 22 cuts the film strip 200 and releases the film strip 200, the first translation drive unit 25 and the second translation drive unit simultaneously drive the clamping unit 24 and the clamping and cutting unit 22 to move towards the center, so that the new free end of the film strip 200 generated by the cutting extends outward from the clamping and cutting unit 22, which facilitates the pulling unit 23 to smoothly clamp the free end of the film strip 200 during the next film stacking. After the pulling unit 23 completes the clamping of the free end of the film strip 200, the first translation drive unit 25 and the second translation drive unit respectively drive the clamping unit 24 and the clamping and cutting unit 22 to translate and reset.

[0083] Both the first translation drive unit 25 and the second translation drive unit can adopt various existing linear drive modules, such as cylinder drive modules, lead screw drive modules, etc.

[0084] like Figure 3 As shown, optionally, the clamping part 24 includes a second pressure seat 241, a second lifting drive (not shown), and a second pressing block 242, wherein: the second lifting drive is located above the second pressure seat 241, the second pressing block 242 is connected to the driving end of the second lifting drive, the membrane strip 200 passes through the second pressing block 242 and the second pressure seat 241, and the second lifting drive is configured to drive the second pressing block 242 to lift and lower, so as to press the membrane strip 200 onto the second pressure seat 241 or release the membrane strip 200.

[0085] When the pulling part 23 pulls the membrane strip 200, the second clamping block 242 releases the membrane strip 200, allowing the membrane strip 200 to pass freely through the clamping part 24. When the pulling part 23 pulls the membrane strip 200 into place and the clamping and cutting part 22 cuts the membrane strip 200, the second clamping block 242 presses the membrane strip 200 against the second pressure seat 241 to clamp the membrane strip 200.

[0086] The second lifting drive can be any existing linear drive device capable of driving the second pressing block 242 to lift, such as a cylinder or a lead screw motor.

[0087] In another alternative embodiment, the clamping and cutting section 22 includes a clamping assembly and a cutting assembly, through which the film strip 200 discharged from the feeding section 21 passes sequentially. The cutting assembly is configured to cut the film strip 200, and the clamping assembly is configured to clamp the film strip 200 when the cutting assembly cuts it, thereby keeping the new free end of the film strip 200 after cutting within the cutting assembly and preventing the film strip from retracting toward the feeding section.

[0088] After the cutting assembly completes the cutting of the membrane strip 200, the clamping assembly continues to clamp the membrane strip 200 and moves toward the cutting assembly, so that the new free end of the membrane strip 200, which is created by the cutting, extends outward from the cutting assembly. This facilitates the pulling part 23 to smoothly clamp the free end of the membrane strip 200 during the next film stacking. After the pulling part 23 has finished clamping the free end of the membrane strip 200, the clamping assembly moves away from the cutting assembly and resets, preparing for the next step of pushing the new free end of the membrane strip 200 outward from the cutting assembly.

[0089] As can be seen, by configuring the clamping and cutting part 22 as an independent clamping and cutting component, the clamping and cutting part 22 can both clamp and cut the film strip and extend the new free end of the film strip 200 outward from the clamping and cutting part 22. In this way, there is no need to set up a special film strip pushing component (such as the clamping part 24 in the previous embodiment) to push the new free end of the film strip 200 outward from the clamping and cutting part 22.

[0090] The clamping assembly can adopt the same structure as the clamping part 24 in the previous embodiment, or it can adopt other existing clamping devices that can perform clamping and releasing of the membrane strip. For example, the clamping assembly includes a gripper cylinder and an upper clamping block and a lower clamping block connected to the two drive ends of the gripper cylinder. The membrane strip 200 passes between the upper clamping block and the lower clamping block. When the gripper cylinder drives the upper clamping block and the lower clamping block to move closer to the middle, the membrane strip can be clamped. When the gripper cylinder drives the upper clamping block and the lower clamping block to separate up and down, the membrane strip 200 is released.

[0091] The cutting assembly can employ various existing cutting devices capable of cutting film strips. For example, the cutting assembly includes a pair of upper and lower cutters, and a drive member capable of driving at least one of the upper and lower cutters to rise and fall. The film strip 200 passes between the upper and lower cutters, and the drive member drives at least one of the upper and lower cutters to rise or fall toward the other, thereby cutting the film strip.

[0092] like Figure 2 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 release 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.

[0093] The pulling part 23 can be any existing pulling device capable of gripping the free end of the film strip 200 and pulling the film strip 200 toward the film application station A. For example, the pulling part 23 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 the gripper grips the free end of the film strip 200 from the pressing and cutting part 22 and pulls the film strip 200 toward the film application station A. Alternatively, the pulling part 23 includes a linear motor and a gripper connected to the driving end of the linear motor. The linear motor drives the gripper to move so that the gripper grips the free end of the film strip 200 from the pressing and cutting part 22 and pulls the film strip 200 toward the film application station A.

[0094] Optionally, the cell conveying mechanism 1 is provided with a first heating component, which is configured to heat the cell 101, so that the film strip stacked on the cell 101 releases its adhesiveness and adheres to the cell. Alternatively, the film strip stacking mechanism 3 is provided with a second heating component, which is configured to heat the film strip, so that the film strip releases its adhesiveness and adheres to the cell.

[0095] By providing a first heating component on the cell conveying mechanism 1, the cell 101 is heated. Therefore, the film strips 201 stacked on the cell can be bonded to the cell 101 after being heated by the high-temperature cell 101. Similarly, by providing a second heating component on the film strip stacking mechanism 3, the film strips 201 adsorbed onto the cell 101 are heated before being stacked, thus enabling the film strips 201 to bond to the cell 101.

[0096] like Figure 2 As shown, since the battery cell 101 and the membrane strip 201 in the battery cell 100 have been bonded together, the battery cell conveying mechanism 1 can avoid displacement between the membrane strip 201 and the battery cell 101 during the process of conveying the battery cell 100 to the subsequent work station and during the subsequent process of laying the battery cell 100 into a string.

[0097] Optionally, the cell conveying mechanism 1 includes a base plate and a conveyor belt. The base plate supports the conveying surface of the conveyor belt, and the conveyor belt conveys the cell 101. A first heating component is provided on the base plate located at the lamination station A and the stage before lamination station A. Thus, the cell 101 can be heated by the conveyor belt before being conveyed to lamination station A and when it reaches lamination station A, thereby ensuring that the temperature of the cell 101 at lamination station A is high enough to ultimately ensure that the film strips stacked on the cell 101 adhere to the cell 101.

[0098] Alternatively, the first heating component can be installed on the base plate below the entire conveyor surface of the conveyor belt. This ensures that the film strips stacked on the battery cells 101 adhere to the battery cells 101. Furthermore, as the battery cells 100 continue to be conveyed from the stacking station A to the next stage, the conveyor belt can continue to heat the battery cells 100, ensuring that the film strip segments 201 maintain a certain temperature and thus do not stick to the conveyor belt, facilitating the smooth removal of the battery cells 100 from the conveyor belt later.

[0099] The first heating component may be, for example, a heating rod inserted into the base plate, and of course, the first heating component may also include a thermocouple for performing temperature detection.

[0100] like Figure 2As shown, optionally, each film strip stacking mechanism 3 includes a first driving part 31 and an adsorption strip 32. The adsorption strip 32 extends along a second direction. The first driving part 31 is configured to drive the adsorption strip 32 to move, so as to drive the adsorption strip 32 to adsorb the film strip located above the film stacking station A, and to stack and bond the adsorbed film strip to the battery cell 101 located at the film stacking station A.

[0101] An adsorption strip 32 extending in the second direction is used as the adsorption component of the membrane strip stacking mechanism 3 to ensure that the membrane strip of a predetermined length pulled to the membrane stacking station A can be adsorbed by the membrane strip stacking mechanism 3 in all directions, preventing the membrane strip from bending or sagging, which would cause wrinkles to appear after the membrane strip is adhered to the battery cell.

[0102] When it is necessary to set a second heating component on the film strip stacking mechanism 3, the second heating component can be set on the adsorption strip 32. For example, the second heating component is a heating rod and a thermocouple inserted into the adsorption strip 32. The first driving part 31 can adopt various existing driving devices that can at least drive the adsorption strip 32 to rise and fall.

[0103] like Figure 2 As shown, optionally, a sizing station B located before the lamination station A is also provided on the conveying path of the cell conveying mechanism 1. The cell pretreatment device 10 in this embodiment of the application further includes a sizing mechanism 4 provided at the sizing station B. The sizing mechanism 4 includes a sizing drive unit, a first sizing unit, and a second sizing unit. The first sizing unit and the second sizing unit are respectively located on both sides of the conveying direction of the cell conveying mechanism 1. The sizing drive unit is configured to drive the first sizing unit and / or the second sizing unit to translate toward the conveying mechanism 1 to push the side of the cell located at the sizing station, thereby realizing the positional alignment of the cell to be laminated, so that the two side edges of the cell are parallel to the first direction, and finally ensuring that the film strip segment stacked to the end of the cell is parallel to the end edge of the cell.

[0104] Optionally, both the first and second aligning sections include at least two aligning wheels arranged side by side along the first direction, the aligning wheels being used to push against the sides of the solar cells.

[0105] Based on the same concept, this application also provides a battery stringing device.

[0106] Figure 4 The structure of the battery stringing device in the first embodiment of this application is shown. Figure 5 The structure of a battery string device according to a second embodiment of this application is shown. For example... Figure 4 and Figure 5 As shown, the battery stringing equipment of this application embodiment includes a battery cell laying mechanism 20, a ribbon laying mechanism 30, a stringing conveyor line 40, a stringing mechanism 50, and a battery cell pretreatment device 10 of any of the above embodiments, wherein:

[0107] The battery cell laying mechanism 20 is configured to pick up battery cells 100 from the battery cell pretreatment device 10 and to cooperate with the ribbon laying mechanism 30 to lay the battery cells 100 and ribbon groups 300 onto the stringing conveyor line 40 according to a predetermined stringing rule.

[0108] The tandem conveyor line 40 is configured to transport the laid-out battery cells 100 and the ribbon assembly 300 to the tandem station. The tandem mechanism 50 is located at the tandem station and is configured to connect the ribbon assembly to the battery cells of the corresponding battery cells 100.

[0109] By setting up the cell pretreatment device 10, the pre-preparation of the battery cell 100, which consists of battery cells and membrane strips, is achieved. Thus, the battery cell laying mechanism 20 and the ribbon laying mechanism 30 can lay the battery cell 100 and the ribbon group 300 on the stringing conveyor line according to the stringing rules. Finally, the stringing mechanism 50 welds the ribbon group 300 to the corresponding battery cell 100, ensuring that the membrane strips are all positioned at their corresponding inter-cell locations. Using the battery stringing equipment of this embodiment to perform the battery cell stringing operation eliminates the need for subsequent membrane insertion operations, thereby improving the stringing efficiency and stringing quality of the battery cells.

[0110] like Figure 4 As shown, the cell pretreatment device 10 includes only a film strip stacking mechanism 3 and a film strip supply mechanism 2. Therefore, the cell pretreatment device 10 stacks and bonds a film strip segment 201 to a cell 101 located at the film stacking station A each time to obtain a cell 100.

[0111] like Figure 5 As shown, the cell pretreatment device 10 includes two film strip stacking mechanisms 3 and two film strip supply mechanisms 2. Therefore, the cell pretreatment device 10 stacks and bonds two film strip segments 201 to two cells 101 located at the stacking station A each time to obtain two cell units 100.

[0112] Of course, in other embodiments, the cell pretreatment device 10 may also include three or more film strip stacking mechanisms 3 and film strip supply mechanisms 2, which correspond to each other. Correspondingly, the cell pretreatment device 10 stacks and bonds three or more film strip segments 201 to three or more cell cells 101 located at the stacking station A each time to obtain three or more cell cells 100.

[0113] 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 6 A more detailed exemplary description is provided of the specific stringing process of the battery cell 100 and the ribbon assembly 300.

[0114] like Figure 6 As shown, the target battery string consists of 4 battery cells 100 and 5 ribbon groups 300 from front to back (e.g., Figure 6 The arrows in the image are sequentially connected, and the specific process of forming the string is as follows:

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] Thus, the task of... Figure 6 The battery strings in the illustrated embodiment are laid out in a string.

[0124] like Figure 4 As shown, optionally, the battery cell placement mechanism 20 includes a drive unit 20a and a cell suction unit 20b. The drive unit 20a is configured to drive the cell suction unit 20b to move, thereby causing the cell suction unit 20b to adsorb the cell 101 of the battery cell 100 and to place the battery cell 100 onto the series conveyor line 40. The drive unit 20a can adopt various existing drive mechanisms capable of driving the cell suction unit 20b to translate and lift. For example, it includes a translation drive module and a lifting drive module, wherein the lifting drive module is connected to the movable part of the translation drive module, and the cell suction unit 20b is connected to the movable part of the lifting drive module. The translation drive module is used to drive the cell suction unit 20b to translate, and the lifting drive module is used to drive the cell suction unit 20b to lift. The cell suction unit 20b can, for example, be a suction cup assembly.

[0125] The ribbon laying mechanism 30 can be any existing mechanism capable of laying ribbon bundles 300, and this application does not limit it. For example, the ribbon laying mechanism can directly clamp the ends of the ribbon bundle and pull the ribbon bundle out of the coil to a certain length, and after cutting the ribbon bundle, continue to pull and lay the ribbon bundle with a predetermined length onto the solar cell; alternatively, the ribbon laying mechanism can clamp both ends of the ribbon bundle with a predetermined length, and then transport and lay the ribbon bundle onto the solar cell.

[0126] The connecting mechanism 50 can be at least one of a heating mechanism and a photocuring mechanism.

[0127] For conventional cases where solar cells are welded using only solder strips, a heating mechanism is sufficient as the series connection mechanism 50. The heating mechanism melts the solder on the surface of the solder strip by heating the solar cells and the solder strip, thereby creating a metallized connection between the solder strip and the corresponding solar cell to complete the welding of the solar cells into a series. In addition, the heating mechanism can also heat the membrane strip segments, causing the membrane strip segments to release their adhesiveness after being heated, so as to adhere them between adjacent solar cells.

[0128] For cases where a photocurable adhesive (such as UV adhesive) is applied to the surface of the solar cells, a photocuring mechanism is used to irradiate the solar cells and solder ribbons. This allows the photocurable adhesive to cure and then bond the solder ribbons to the corresponding solar cells, thus completing the cell stringing. Alternatively, a heating mechanism can be selectively incorporated. While the photocurable adhesive has bonded the solder ribbons to the corresponding solar cells, the solder on the surface of the solder ribbons can be heated and melted by the heating mechanism, thereby welding the solder ribbons to the corresponding solar cells. This further enhances the connection strength between the solder ribbons and the solar cells, ultimately improving the quality of the solar cell string.

[0129] For cases where thermosetting adhesive is applied to the surface of the battery cell, only a heating mechanism is needed as the series connection mechanism 50. By heating the battery cell and the solder ribbon, the thermosetting adhesive can be cured and the solder ribbon can be bonded to the corresponding battery cell. In addition, the heating mechanism can also heat the solder ribbon and the film strip segment, so that the solder on the surface of the solder ribbon melts and welds the solder ribbon to the corresponding battery cell, and the film strip segment releases its adhesiveness after being heated, so as to bond between adjacent battery cells.

[0130] This application provides a sufficiently detailed and specific description. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within its protection scope. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Without contradiction, some optional components in one embodiment can also be used in another embodiment, and some preferred structures of the same component in one embodiment are also applicable to another embodiment. Furthermore, there may be slight differences in the wording of the names of certain components in different embodiments; these slight differences will not affect the understanding of the technical solution of the present invention by those skilled in the art.

Claims

1. A battery cell pretreatment apparatus, characterized in that, The solar cell pretreatment device includes a solar cell conveying mechanism, n membrane strip supply mechanisms, and n membrane strip stacking mechanisms, 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 supply mechanisms is configured to supply one membrane strip and to pull a membrane strip of predetermined length above the film stacking station along a second direction, wherein the second direction is perpendicular to the first direction; The n membrane strip stacking mechanisms are arranged in a one-to-one correspondence with the n membrane strip supply mechanisms. The n membrane strip stacking mechanisms are configured to adsorb the membrane strips pulled by the corresponding membrane strip supply mechanisms and located above the membrane stacking station. The membrane strip supply mechanisms are also configured to cut the membrane strips adsorbed on the corresponding membrane strip stacking mechanisms to obtain membrane strip segments. The n membrane strip stacking mechanisms are also configured to stack the membrane strip segments and bond them to one edge of the n battery cells located at the membrane stacking station to obtain n battery cells. Alternatively, n membrane strip stacking mechanisms are arranged in a one-to-one correspondence with n membrane strip supply mechanisms. The n membrane strip stacking mechanisms are configured to adsorb the membrane strips pulled out by the corresponding membrane strip supply mechanism and located above the stacking station, stack the membrane strips and bond them to one edge of n battery cells located at the stacking station. The membrane strip supply mechanism is also configured to cut the membrane strips bonded to the battery cells by the corresponding membrane strip stacking mechanism to obtain n battery cells.

2. The cell pretreatment apparatus as described in claim 1, characterized in that, Each of the aforementioned membrane strip supply mechanisms includes a feeding section, a pressing and cutting section, and a pulling section, wherein: The feeding section is configured to release the film strip, and the pulling section is configured to clamp the free end of the film strip extending outward from the pressing and cutting section, and to pull the film strip of a predetermined length above the film stacking station. The pressing and cutting part is configured to press and cut the film strip after the film strip is adsorbed by the film strip stacking mechanism or after the film strip is bonded to the battery cell.

3. The cell pretreatment 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 battery cell conveying mechanism; 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 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 cell pretreatment 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 retracts, and the cutter extends downwards from the first pressing block to cut the membrane strip.

5. The cell pretreatment apparatus as described in claim 2, characterized in that, Each of the film strip supply mechanisms further includes a clamping part located between the feeding part and the pressing and cutting part, wherein the film strip released by the feeding part passes sequentially through the clamping part and the pressing and cutting part, and the clamping part is configured to clamp the film strip when the pressing and cutting part cuts the film strip; The film strip supply 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 cut part, so that a new free end of the film strip after cutting extends outward from the clamping cut part; and / or, the film strip supply mechanism further includes a second translation drive unit, the clamping cut part being connected to a movable component of the second translation drive unit, the second translation drive unit being configured to drive the clamping cut 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 cut part.

6. The cell pretreatment apparatus as described in claim 5, characterized in that, The clamping part includes a second pressure bearing seat, a second lifting drive component, and a second clamping block, wherein: The second lifting drive is located above the second pressure seat, the second pressing block is connected to the drive end of the second lifting drive, the membrane strip passes between the second pressing block and the second pressure seat, and the second lifting drive is configured to drive the second pressing block to lift and lower, so as to press the membrane strip onto the second pressure seat or release the membrane strip.

7. The cell pretreatment 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, 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.

8. The cell pretreatment apparatus as described 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 stacking mechanism is equipped with a second heating component, which is configured to heat the membrane strips so that the membrane strips release their adhesiveness and adhere to the battery cells.

9. The cell pretreatment apparatus as described in claim 8, 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.

10. The cell pretreatment apparatus as described in claim 1, characterized in that, Each of the membrane strip stacking mechanisms includes a first driving part and an adsorption strip, the adsorption strip extending along the second direction, the first driving part being configured to drive the adsorption strip to move, thereby causing the adsorption strip to adsorb the membrane strip located above the membrane stacking station, and to stack and bond the adsorbed membrane strip to the battery cell located at the membrane stacking station.

11. The cell pretreatment apparatus as described 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 pretreatment device 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 conveying direction of the conveying mechanism. The straightening drive unit is configured to drive the first straightening unit and / or the second straightening unit to translate toward the conveying mechanism to push the side of the cell located at the straightening station.

12. A battery stringing device, characterized in that, The battery stringing equipment includes a battery cell laying mechanism, a welding ribbon laying mechanism, a stringing conveyor line, a stringing mechanism, and a battery cell pretreatment device as described in any one of claims 1 to 11, wherein: The battery cell laying mechanism is configured to pick up the battery cells from the battery cell pretreatment 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.

Images