Battery string correction device and battery piece series connection machine

Abstract

The utility model discloses a battery string correction device and a battery piece series connection machine. The battery string correction device comprises a first correction mechanism, a second correction mechanism and a discharge conveying mechanism, the first correction mechanism is configured to pick up a battery string which is connected in series from a previous station and place the battery string to a receiving station of the discharging conveying mechanism, and the first correction mechanism is further configured to correct the picked battery string for the first time; the discharging conveying mechanism is used for conveying the battery strings located at the receiving station to the turn-over station, and the second correction mechanism is arranged at the turn-over station and comprises a plurality of correction assemblies evenly distributed in the first direction. According to the battery string correction device provided by the invention, the battery string is corrected twice through the two groups of correction mechanisms, so that the probability of secondary deformation of the battery piece is reduced; according to the method, the battery piece can be cooled for a certain time after being corrected for the first time, so that the internal stress is released, and the effect of the second correction is better.

Description

Technical Field

[0001] The present application relates to the field of battery production technology, and in particular to a battery string correction device and a battery cell string connection machine. Background Art

[0002] IBC cells (back-contact cells) have only the backside as a soldering surface, where all electrodes are located. In a stringing machine, IBC cells are connected together using solder ribbons, which are then fixed to the soldering surfaces of the cells. The welded cell strings are then transported from the welding line to the receiving station of the discharge line via a welding conveyor and a handling mechanism. Once the cell strings follow the discharge line to the flipping station, they are flipped over and transferred to the next station.

[0003] During the soldering process, the ribbon is heated to melt the solder layer on its surface. After soldering, the ribbon gradually cools and shrinks during the transport of the battery string, pulling the cell toward the soldering surface. Because the ribbon is only soldered on one side of the IBC cell, the center of the IBC cell is prone to warping. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a battery string correction device and a battery cell string connection machine to solve the problem of deformation in the middle position of the battery cell.

[0005] In a first aspect, the present application provides a battery string correction device, the battery string correction device comprising: a first correction mechanism, a second correction mechanism, and a discharge conveying mechanism;

[0006] The first correction mechanism is configured to pick up a battery string that has been connected in series from the previous station and place it on the receiving station of the discharge conveying mechanism. The first correction mechanism is also configured to perform a first correction on the picked battery string;

[0007] The discharge conveying mechanism is used to convey the battery string located at the receiving station to the flipping station. The second correction mechanism is arranged at the flipping station. The second correction mechanism includes a plurality of correction components evenly arranged along the first direction. The plurality of correction components correspond one-to-one to the battery cells in the battery string. The correction components include a pressing block.

[0008] The pressing block is used to apply pressure along the second direction to the middle position of the battery cell to achieve a second correction.

[0009] Based on the above-mentioned battery string correction device, the battery string is corrected twice by two sets of correction mechanisms, thereby reducing the probability of the battery cells being deformed again; wherein, the first correction mechanism and the second correction mechanism are set to correct the battery cells at two positions respectively, which not only allows the battery cells to have a certain cooling time after the first correction to release the internal stress, thereby making the second correction more effective, but also allows the two correction mechanisms to be staggered to avoid interference problems.

[0010] Optionally, the correction assembly further includes a correction bracket and two sets of lifting structures, the two sets of lifting structures are symmetrically arranged on both sides of the pressing block and all three are installed on the correction bracket, and the two sets of lifting structures are used to provide a force to the battery cell in a direction opposite to the second direction.

[0011] Furthermore, based on the above-mentioned correction component, the pressing block applies pressure in the second direction to the middle position of the battery cell, and the two sets of pulling structures apply forces in the second direction opposite to the two sides of the battery cell, thereby ensuring the correction effect of the pressing block on the middle position of the battery cell. At the same time, the two sets of pulling structures can not only cooperate with the pressing block to complete the correction of the battery cell, but also pick up or release the battery cell, thereby cooperating with other movable structures to complete tasks such as transporting and flipping the battery cell.

[0012] Optionally, the surface of the pressing block facing the battery cell is an arc-shaped surface, and the axis of the arc-shaped surface is parallel to a third direction perpendicular to the second direction.

[0013] Furthermore, based on the above-mentioned pressing block, an effective and uniform extrusion force can be applied to the battery cell, thereby improving the correction efficiency. At the same time, the curved surface can also create a gap between the two sides of the battery cell and the pressing block, thereby avoiding the problem of interference between the lifting structure and the battery cell and the pressing block.

[0014] Optionally, the arc-shaped surface is further provided with a plurality of air-cooling grooves, and the bottoms of the air-cooling grooves are provided with air holes, which are connected to an air source.

[0015] Furthermore, based on the above-mentioned air cooling tank, the gas flowing in the air cooling tank can cool down the battery cell and the solder ribbon at the same time, reducing the probability of the battery cell being deformed again due to the continued shrinkage of the solder ribbon after the battery cell is corrected.

[0016] Optionally, each group of lifting structures includes a plurality of suction cups arranged along a third direction and connected to an air source, and the suction cups are used to continuously provide adsorption force to the corresponding battery cells in a direction opposite to the second direction during the stage of picking up the battery string.

[0017] Furthermore, based on the above-mentioned pulling structure, the pulling structure can be more conveniently combined with and separated from the battery cell, thereby significantly improving the efficiency of the entire correction work. When the pressure block provides pressure in the second direction to the center position of the battery cell, it can provide a pulling force (adsorption force) opposite to the second direction to both sides of the center position of the battery cell, thereby ensuring the pressure effect of the pressure block and preventing the battery cell from falling; and the suction cup can achieve rapid combination and separation with the battery cell, thereby improving the efficiency of the second correction mechanism when transporting and flipping the battery cell.

[0018] Optionally, the second correction mechanism also includes a first lifting assembly, a connecting beam extending along the first direction, a rotating assembly and a connecting frame, and all the correction components are arranged on the connecting beam; the movable end of the first lifting assembly is connected to the connecting frame and is configured to drive the connecting frame to reciprocate along the second direction, and the connecting beam is rotatably arranged on the connecting frame; the rotating assembly is arranged on the connecting frame, and the driving end of the rotating assembly is transmission-connected to the connecting beam and is configured to drive the connecting beam to rotate around its rotation direction.

[0019] Furthermore, based on the above-mentioned second correction mechanism, the consistency of the synchronous movement of all correction components is improved. The second correction mechanism can also correct the battery cells by lifting and lowering along the second direction, and realize the flipping of the battery string by driving the connecting beam to rotate, thereby facilitating the picking up of the subsequent workstation and improving the transmission efficiency of the battery string.

[0020] Optionally, the discharge conveying mechanism includes a conveying drive assembly and a conveyor belt, wherein the conveying drive assembly drives the conveyor belt to convey the battery string along a first direction to convey the battery string from the receiving station to the flipping station;

[0021] The battery string correction device also includes a correction cooperation mechanism, which is arranged at the flipping station and is configured to lift the battery string toward the second correction mechanism when the second correction mechanism contacts the battery string from the flipping station.

[0022] Furthermore, based on the above-mentioned discharge conveying mechanism and correction coordination mechanism, it is possible to achieve that when the conveying work of the battery string is completed, support can be provided for the battery cells located on the flipping station at the flipping station corresponding to the second correction mechanism, thereby improving the combination stability of the lifting structure and the battery cells.

[0023] Optionally, the correction and matching mechanism includes a second lifting assembly and a plurality of support plates evenly arranged along the first direction, the tops of the support plates having a lifting surface for supporting edges of the battery cells parallel to the third direction, and the second lifting assembly is configured to drive the support plates to reciprocate between the first position and the second position along the second direction;

[0024] When the support plate is in the first position, the support surface is higher than the conveying surface of the conveyor belt, and the battery cell is lifted to a set height;

[0025] When the supporting plate is located at the second position, the supporting surface is lower than the conveying surface of the conveyor belt or is flush with the conveying surface of the conveyor belt.

[0026] Furthermore, based on the above-mentioned correction cooperation mechanism, the pallet can, under the drive of the second lifting assembly, realize the action of lifting the battery cell upward and moving downward away from the battery cell, which can provide reliable support when the second correction mechanism corrects the battery cell at the flipping station, and will not affect the normal transportation of the battery cell on the conveyor belt.

[0027] Optionally, each group of supporting plates includes two supporting plates, and the two supporting plates are respectively arranged opposite to the two groups of lifting structures in the second direction.

[0028] Furthermore, based on this arrangement, when the connecting beam drives the pressure block and the suction cup to move toward the battery cell, after the suction cup is pressed on the upper surface of the battery cell, the support plate provides support force for the position on the battery cell corresponding to the lifting structure. At this time, the suction cup will be deformed and can absorb and fix the battery cell as quickly as possible.

[0029] Optionally, a avoidance portion is provided on the top of the support plate, the avoidance portion is arranged opposite to the conveyor belt, and is configured to avoid the conveyor belt in the second direction.

[0030] Furthermore, based on the above-mentioned pallet, it can be ensured that the pallet can be smoothly switched between the first position and the second position every time, thereby reducing the probability of interference between the pallet and the conveyor belt.

[0031] In a second aspect, the present application provides a cell stringing machine, which includes a ribbon supply device, a cell supply device, a stringing conveying device, a curing device, and the cell string correction device described above, wherein:

[0032] The solder ribbon supply device is used to provide the serial conveying device with a solder ribbon group arranged in a predetermined pattern; the battery cell supply device is used to provide the battery cells to the serial conveying device; the serial conveying device is used to receive the solder ribbon and battery cells and move the stacked solder ribbon and battery cells to the curing device; the curing device is used to perform thermal curing treatment on the stacked solder ribbon and battery cells; the serial conveying device is also used to move the battery string that has undergone thermal curing treatment to the first correction mechanism; the first correction mechanism is used to transport the battery string from the serial conveying device to the receiving station of the discharge conveying mechanism, and the first correction mechanism is also used to perform the first correction on the battery string when transporting the battery string; the discharge conveying mechanism is used to transport the battery string, and the discharge conveying mechanism is also used to cooperate with the second correction mechanism and perform the second correction on the battery string; the second correction mechanism is also used to continue to flip the battery string after the second correction is performed on the battery string.

[0033] Furthermore, based on the above-mentioned battery cell stringing machine, the assembly and correction efficiency of the battery string can be effectively improved, and the first correction mechanism and the second correction mechanism can be used to correct the battery string twice during the transportation process, thereby improving the quality of the battery string without affecting the production efficiency of the battery string.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The disclosure of this application will be more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the figures represent similar components, where:

[0036] Figure 1 This is a schematic structural diagram of the battery string correction device according to an embodiment of the present application;

[0037] Figure 2 This is a schematic structural diagram of the second correction mechanism described in an embodiment of the present application;

[0038] Figure 3 This is a schematic structural diagram of the back side of the second correction mechanism described in an embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of the structure of the correction assembly according to an embodiment of the present application arranged on the connecting beam;

[0040] Figure 5 This is a schematic structural diagram of one of the correction components described in an embodiment of the present application;

[0041] Figure 6 for Figure 5 A schematic structural diagram of the bottom of the correction component;

[0042] Figure 7 This is a schematic structural diagram of another correction assembly according to an embodiment of the present application;

[0043] Figure 8 for Figure 7 A front view of the correction component in FIG.

[0044] Figure 9 for Figure 7 A schematic structural diagram of the bottom of the correction component;

[0045] Figure 10 This is a structural diagram of the correction and matching mechanism and the conveyor belt according to an embodiment of the present application;

[0046] Figure 11This is a structural diagram of a battery string according to an embodiment of the present application placed on a correction and matching mechanism;

[0047] Figure 12 This is a structural diagram of the battery cell according to an embodiment of the present application being placed on a support plate;

[0048] Figure 13 This is a schematic structural diagram of the support plate described in an embodiment of the present application;

[0049] Figure 14 This is a schematic structural diagram of the first correction mechanism described in an embodiment of the present application;

[0050] Figure 15 This is a schematic diagram of the relative positions of the serial conveying device, the first correction mechanism, the discharge conveying mechanism, and the second correction mechanism described in an embodiment of the present application.

[0051] Description of reference numerals:

[0052] 1. The first correctional institution;

[0053] 2. Second correction mechanism; 21. Pressing block; 211. Curved surface; 212. Air cooling groove; 22. Lifting structure; 221. Suction cup; 23. First lifting assembly; 24. Connecting beam; 25. Rotating assembly; 26. Connecting frame;

[0054] 31. Second lifting assembly; 32. Support plate; 321. Lifting surface; 322. Avoidance portion; 33. Connecting rod;

[0055] 4. Discharging conveying mechanism; 41. Conveyor belt; 42. Turning station; 43. Receiving station;

[0056] 5. Front-end workstation. DETAILED DESCRIPTION

[0057] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application.

[0058] During the soldering process, the ribbon is heated to melt the solder layer on its surface. After soldering, the ribbon gradually cools and shrinks during the transport of the battery string, pulling the cell toward the soldering surface. Because the ribbon is only soldered on one side of the IBC cell, the center of the IBC cell is prone to warping.

[0059] Based on this, the present application provides a battery string correction device and a battery cell string connection machine to solve the problem of deformation in the middle position of the battery cell.

[0060] The present application will be described in detail below through specific embodiments.

[0061] First, refer to Figures 1 to 15 As shown, this embodiment provides a battery string correction device, which includes: a first correction mechanism 1 and a second correction mechanism 2, and a discharge conveying mechanism 4; the first correction mechanism 1 is configured to pick up a battery string that has been connected in series from the front station 5 and place it on the receiving station 43 of the discharge conveying mechanism 4, and the first correction mechanism 1 is also configured to perform a first correction on the picked battery string; the discharge conveying mechanism 4 is used to convey the battery string located at the receiving station 43 to the flipping station 42, and the second correction mechanism 2 is arranged at the flipping station 42, and the second correction mechanism 2 includes a plurality of correction components evenly arranged along the first direction, and the plurality of correction components correspond one-to-one to the battery cells in the battery string, and the correction component includes a pressing block 21; the pressing block 21 is used to apply pressure along the second direction to the middle position of the battery cell to achieve a second correction.

[0062] Based on the above-mentioned battery string correction device, two sets of correction mechanisms are used to correct the battery string twice, reducing the probability of the battery cells deforming again. Among them, the first correction mechanism 1 and the second correction mechanism 2 are set to correct the battery cells in two positions respectively. This not only allows the battery cells to have a certain cooling time after the first correction to release their internal stress, thereby improving the effect of the second correction, but also allows the two correction mechanisms to be staggered to avoid interference problems. In addition, the two correction actions are integrated into the original battery string discharge process, eliminating the need to set aside additional time for correction, thereby improving efficiency.

[0063] Continue to refer to Figures 5 to 9 As shown, in some embodiments, the correction component also includes a correction bracket and two sets of lifting structures 22, the two sets of lifting structures 22 are symmetrically arranged on both sides of the pressing block 21 and all three are installed on the correction bracket, the two sets of lifting structures 22 are used to provide a force to the battery cell in a direction opposite to the second direction, wherein one correction component corresponds to one battery cell, the pressing block 21 squeezes the middle position of the battery cell downward, and the lifting structure 22 pulls the side position of the battery cell upward.

[0064] Furthermore, based on the above-mentioned correction component, the pressing block 21 applies pressure in the second direction to the middle position of the battery cell, and the two sets of pulling structures 22 apply forces in the second direction opposite to the two sides of the battery cell, thereby ensuring the correction effect of the pressing block 21 on the middle position of the battery cell. At the same time, the two sets of pulling structures 22 can not only cooperate with the pressing block 21 to complete the correction of the battery cell, but also pick up or release the battery cell, thereby cooperating with other movable structures to complete tasks such as transporting and flipping the battery cell.

[0065] Optionally, the surface of the pressing block 21 facing the battery cell is an arcuate surface 211, and the axis of the arcuate surface 211 is parallel to a third direction perpendicular to the second direction, wherein the position where the arcuate surface 211 makes line contact with the middle position of the battery cell is at the same height, that is, at the same height in the second direction, and the raised portion of the arcuate surface 211 can fit into the middle position of the battery cell and apply a uniform extrusion force above the axis of the battery cell; wherein the projection of the pressing block 21 in the second direction can match the battery cell, wherein a through-hole structure for avoiding the pulling structure 22 can be opened on the pressing block 21.

[0066] Based on the above-mentioned pressing block 21, an effective and uniform extrusion force can be applied to the battery cell, thereby improving the correction efficiency. At the same time, the curved surface 211 can also create a gap between the two sides of the battery cell and the pressing block 21, thereby avoiding the problem of interference between the lifting structure 22 and the battery cell and the pressing block 21.

[0067] Continue to refer to Figure 9 As shown, in some embodiments, the arc surface 211 is further provided with a plurality of air cooling grooves 212, and the bottom of the air cooling grooves 212 is provided with blowing holes, which are connected to the air source, wherein the air cooling grooves 212 form a gas flow channel. When the air source inhales or blows air, flowing gas will be generated in the air cooling grooves 212 to cool the battery cells.

[0068] Furthermore, based on the air cooling tank 212 , the gas flowing in the air cooling tank 212 can cool down the battery cell and the solder ribbon at the same time, thereby reducing the probability of the battery cell being deformed again due to the continued shrinkage of the solder ribbon after the battery cell is corrected.

[0069] Optionally, each air-cooling groove 212 is arranged in parallel with the welding strip, that is, each air-cooling groove 212 extends along the first direction and can completely cover the position of the welding strip. The air-cooling groove 212 can also be arranged into other shapes such as a circular shape, an S shape, a Z shape, etc., as long as all welding strips can be cooled; the number of air-cooling grooves 212 can also be more than the number of welding strips, specifically it can be a multiple of the welding strips, so that more than one air-cooling groove 212 can cool a welding strip, further improving the cooling efficiency of the welding strip.

[0070] In some examples, the pressing block 21 may also be a strip-shaped structure extending along the third direction, and the bottom of the pressing block 21 forms an extrusion surface that converts line contact to surface contact with the middle position of the battery cell.

[0071] In some embodiments, each group of lifting structures 22 includes multiple suction cups 221 arranged along the third direction and connected to the air source. The suction cups 221 are used to continuously provide adsorption force to the corresponding battery cells in a direction opposite to the second direction during the stage of picking up the battery string.

[0072] Furthermore, the number of suction cups 221 can be an even number of four or more, so as to provide a stable adsorption effect for the battery cell; it should be understood that the lifting structure 22 can also be a structure such as a screw, a rivet, a support block, etc., which is connected to the battery cell by threaded connection, riveting, bonding, welding, lifting, etc. When the lifting structure 22 is a suction cup 221, it can be more convenient to combine and separate the lifting structure 22 from the battery cell, thereby significantly improving the efficiency of the entire correction work, and when the pressure block 21 provides pressure in the second direction to the center position of the battery cell, it can provide a pulling force (adsorption force) opposite to the second direction on both sides of the center position of the battery cell, thereby ensuring the pressure effect of the pressure block 21 and preventing the battery cell from falling; and the suction cup 221 can achieve rapid combination and separation with the battery cell, thereby improving the efficiency of the second correction mechanism 2 when transporting and flipping the battery cell.

[0073] Continue to refer to Figures 1 to 4 As shown, the second correction mechanism 2 also includes a first lifting component 23, a connecting beam 24 extending along the first direction, a rotating component 25 and a connecting frame 26. All correction components are arranged on the connecting beam 24. The connecting beam 24 can be used to control the synchronous movement of all correction components. At the same time, it also provides a reliable and stable base structure for all correction components, thereby improving the accuracy of the relative positions of all correction components. The movable end of the first lifting component 23 is connected to the connecting frame 26 and is configured to drive the connecting frame 26 to reciprocate along the second direction. The connecting beam 24 is rotated and arranged on On the connecting frame 26; the rotating component 25 is arranged on the connecting frame 26, and the driving end of the rotating component 25 is transmission-connected to the connecting beam 24, and is configured to drive the connecting beam 24 to rotate around its rotation direction; it should be understood that the first lifting component 23 and the rotating component 25 cooperate to drive all the correction components to lift and lower in the second direction (vertical direction) and rotate (flip) around the connecting beam 24, that is, the connecting beam 24 can also be connected to other structures such as a robotic arm that can drive the connecting beam 24 to lift and lower in the second direction (vertical direction) and rotate around its own axis.

[0074] Among them, the rotating component 25 can be a rotary cylinder, or it can be a structure such as a motor that can drive the connecting beam 24 to rotate. The fixed part of the rotating component 25 can be connected to one of the connecting beam 24 and the connecting frame 26, and the rotating part of the rotating component 25 is connected to the other of the connecting beam 24 and the connecting frame 26, thereby driving the connecting beam 24 to rotate on the connecting frame 26.

[0075] Furthermore, based on the above-mentioned second correction mechanism 2, the consistency of the synchronous movement of all correction components is improved. The second correction mechanism 2 can also correct the battery cells by lifting and lowering along the second direction, and realize the flipping of the battery string by driving the connecting beam 24 to rotate, thereby facilitating the picking up of the subsequent workstation and improving the transmission efficiency of the battery string.

[0076] In some embodiments, the discharge conveying mechanism 4 includes a conveying drive assembly and a conveyor belt 41. The conveying drive assembly drives the conveyor belt 41 to convey the battery string along the first direction to convey the battery string from the receiving station 43 to the flipping station 42. The battery string correction device also includes a correction matching mechanism. The correction matching mechanism is arranged at the flipping station 42 and is configured to lift the battery string toward the second correction mechanism 2 when the second correction mechanism 2 contacts the battery string from the flipping station 42. It should be noted that the top surface of the conveyor belt 41 is used to support the battery string. The conveyor belt 41 can be one, And when the battery cells are on the conveyor belt 41, the two sides of the conveyor belt 41 can extend out of the conveyor belt 41 to form a part that cooperates with the correction cooperation mechanism, so that the correction cooperation mechanism can lift the battery string upward. There can also be two or more conveyor belts 41, wherein the part of the battery cells located between the two conveyor belts 41 can form a part that cooperates with the correction cooperation mechanism, so that the correction cooperation mechanism can lift the battery string upward. The two ends of the battery cells can also extend out of the conveyor belt 41 to form a part that cooperates with the correction cooperation mechanism, so that the correction cooperation mechanism can lift the battery string upward.

[0077] Furthermore, based on the above-mentioned discharge conveying mechanism 4 and the correction cooperation mechanism, it is possible to achieve that when the conveying work of the battery string is completed, the flipping station 42 corresponding to the second correction mechanism 2 can also provide support for the battery cells located on the flipping station 42, thereby improving the combination stability of the lifting structure 22 and the battery cells.

[0078] like Figure 1 、 Figure 12 、 Figure 13 Optionally, the correction and matching mechanism includes a second lifting component 31 and multiple groups of support plates 32 evenly arranged along the first direction, the top of the support plate 32 has a lifting surface 321 for supporting the edge of the battery cell parallel to the third direction, and the second lifting component 31 is configured to drive the support plate 32 to reciprocate between the first position and the second position along the second direction; when the support plate 32 is in the first position, the lifting surface 321 is higher than the conveying surface of the conveyor belt 41, and the battery cell is lifted to a set height; when the support plate 32 is in the second position, the lifting surface 321 is lower than the conveying surface of the conveyor belt 41 or is flush with the conveying surface of the conveyor belt 41; in some embodiments, all the support plates 32 can be connected in series by a connecting rod 33 extending along the first direction, so as to achieve synchronous movement in the second direction.

[0079] Furthermore, based on the above-mentioned correction cooperation mechanism, the support plate 32 can, under the drive of the second lifting component 31, realize the action of lifting the battery cell upward and moving downward away from the battery cell, which can provide reliable support when the second correction mechanism 2 corrects the battery cell at the flipping station 42, and will not affect the normal transportation of the battery cell on the conveyor belt 41.

[0080] Continue to refer to Figures 10 to 13 As shown, each group of support plates 32 includes two support plates 32, and the two support plates 32 are respectively arranged opposite to the two groups of lifting structures 22 in the second direction. Each group of support plates 32 can specifically be two groups of support plates 32, and each group of support plates 32 can be one or more.

[0081] Furthermore, based on this arrangement, when the connecting beam 24 drives the pressure block 21 and the suction cup 221 to move toward the battery cell, after the suction cup 221 is pressed on the upper surface of the battery cell, the support plate 32 provides support force for the position on the battery cell corresponding to the lifting structure 22. At this time, the suction cup 221 will be deformed and can absorb and fix the battery cell as quickly as possible.

[0082] In some embodiments, a avoidance portion 322 is provided on the top of the pallet 32, which is arranged opposite to the conveyor belt 41 and is configured to avoid the conveyor belt 41 in the second direction, wherein the width of the avoidance portion 322 matches the width of the conveyor belt 41 and is wider than the width of the conveyor belt 41, and the depth of the avoidance portion 322 in the second direction is greater than the thickness of the conveyor belt 41.

[0083] Furthermore, based on the above-mentioned support plate 32 , it can be ensured that the support plate 32 can be smoothly switched between the first position and the second position every time, thereby reducing the probability of interference between the support plate 32 and the conveyor belt 41 .

[0084] In a second aspect, the present application provides a battery cell stringing machine, which includes a solder ribbon supply device, a battery cell supply device, a stringing conveying device, a curing device, and a battery string correction device as described above, wherein: the solder ribbon supply device is used to provide a solder ribbon group arranged in a predetermined pattern to the stringing conveying device; optionally, the solder ribbon supply device includes at least the following mechanisms: a solder ribbon feeding mechanism, the solder ribbon feeding mechanism is configured to rotate the material roll and release multiple solder ribbons to provide them to the downstream mechanism; a solder ribbon buffer mechanism, the solder ribbon buffer mechanism is configured to use a liftable counterweight roller to buffer a predetermined length of solder ribbon The soldering ribbon cutting mechanism is configured to cut all the soldering ribbons after the soldering ribbon pulling mechanism has pulled out a predetermined length of soldering ribbon. The soldering ribbon pulling mechanism is configured to pull the soldering ribbon out to a predetermined length, and the pulled soldering ribbon will be placed on the soldering ribbon preparation mechanism. The soldering ribbon preparation mechanism is configured to cut, space, and clamp all the soldering ribbons. The soldering ribbon conveying mechanism is configured to pick up all the soldering ribbons that have been cut and spaced, and transfer them to the serial conveying device. The specific order of placing the soldering ribbons and the battery cells is to place the soldering ribbons first, and then the battery cells. The battery cell supply device is used to provide battery cells to the serial conveying device. Optionally, the battery cell supply device includes at least the following mechanisms: a battery cell loading mechanism, which is configured to take out battery cells from a loading container. A battery cell conveying mechanism, which is configured to place the battery cells on the serial conveying device, and may rotate them to a predetermined angle before placement. The serial conveyor device is used to receive the solder ribbons and battery cells and move the stacked solder ribbons and battery cells to the curing device; the curing device is used to perform thermal curing treatment on the stacked solder ribbons and battery cells; the serial conveyor device is also used to move the battery string that has undergone thermal curing treatment to the first correction mechanism 1; optionally, the serial conveyor device includes a conveyor line, or includes two cyclic reciprocating conveyor mechanisms, each conveyor mechanism is used to carry the delivered solder ribbons and battery cells and send them to the curing device and the bottom of the first correction mechanism 1 (prepared for discharge). Figure 14 and Figure 15 As shown, the first correction mechanism 1 is used to transport the battery string from the front station 5 of the serial conveying device to the receiving station 43 of the discharge conveying mechanism 4. The first correction mechanism 1 is also used to perform the first correction on the battery string when transporting the battery string; the discharge conveying mechanism 4 is used to convey the battery string, and the discharge conveying mechanism 4 is also used to cooperate with the second correction mechanism 2 and perform the second correction on the battery string; the second correction mechanism 2 is also used to continue to turn over the battery string after the second correction is performed on the battery string.

[0085] Furthermore, based on the above-mentioned battery cell stringing machine, the assembly and correction efficiency of the battery string can be effectively improved, and the first correction mechanism 1 and the second correction mechanism 2 can be used to correct the battery string twice during the transportation process, thereby improving the quality of the battery string without affecting the production efficiency of the battery string.

[0086] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0087] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0088] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery string correction device, characterized in that: The battery string correction device includes: a first correction mechanism, a second correction mechanism, and a discharge conveying mechanism; The first correction mechanism is configured to pick up a battery string that has been connected in series from the previous workstation and place it at the receiving workstation of the discharge conveying mechanism. The first correction mechanism is also configured to perform a first correction on the picked battery string. The discharge conveying mechanism is used to convey the battery string located at the receiving station to the flipping station. The second correction mechanism is arranged at the flipping station. The second correction mechanism includes a plurality of correction components evenly arranged along the first direction. The plurality of correction components correspond one-to-one to the battery cells in the battery string. The correction components include a pressing block. The pressing block is used to apply pressure along the second direction to the middle position of the battery cell to achieve a second correction.

2. The battery string correction device according to claim 1, characterized in that: The correction assembly also includes a correction bracket and two sets of lifting structures. The two sets of lifting structures are symmetrically arranged on both sides of the pressing block and all three are installed on the correction bracket. The two sets of lifting structures are used to provide the battery cell with a force in a direction opposite to the second direction.

3. The battery string correction device according to claim 1, characterized in that: The surface of the pressing block facing the battery cell is an arc-shaped surface, and the axis of the arc-shaped surface is parallel to a third direction perpendicular to the second direction.

4. The battery string correction device according to claim 3, characterized in that: The arc surface is further provided with a plurality of air cooling grooves, the bottoms of the air cooling grooves are provided with air blowing holes, and the air blowing holes are connected to an air source.

5. The battery string correction device according to claim 2, characterized in that: Each group of the lifting structures includes a plurality of suction cups arranged along a third direction and connected to an air source. The suction cups are used to continuously provide adsorption force in a direction opposite to the second direction to the corresponding battery cells during the stage of picking up the battery string.

6. The battery string correction device according to claim 1, characterized in that: The second correction mechanism also includes a first lifting component, a connecting beam extending along the first direction, a rotating component and a connecting frame, and all the correction components are arranged on the connecting beam; the movable end of the first lifting component is connected to the connecting frame and is configured to drive the connecting frame to reciprocate along the second direction, and the connecting beam is rotatably arranged on the connecting frame; the rotating component is arranged on the connecting frame, and the driving end of the rotating component is transmission-connected to the connecting beam and is configured to drive the connecting beam to rotate around its rotation direction.

7. The battery string correction device according to claim 2 or 5, characterized in that: The discharge conveying mechanism includes a conveying drive assembly and a conveyor belt, wherein the conveying drive assembly drives the conveyor belt to convey the battery string along the first direction, so as to convey the battery string from the receiving station to the flipping station; The battery string correction device further includes a correction cooperation mechanism, which is disposed at the flipping station and configured to lift the battery string toward the second correction mechanism when the second correction mechanism contacts the battery string from the flipping station.

8. The battery string correction device according to claim 7, characterized in that: The correction and matching mechanism includes a second lifting assembly and a plurality of support plates evenly arranged along a first direction, wherein the tops of the support plates have a lifting surface for supporting the edges of the battery cells parallel to the third direction, and the second lifting assembly is configured to drive the support plates to reciprocate between a first position and a second position along the second direction; When the support plate is in the first position, the lifting surface is higher than the conveying surface of the conveyor belt, and the battery cell is lifted to a set height; When the supporting plate is located at the second position, the lifting surface is lower than the conveying surface of the conveyor belt or is flush with the conveying surface of the conveyor belt.

9. The battery string correction device according to claim 8, characterized in that: Each group of support plates includes two support plates, and the two support plates are respectively arranged opposite to the two groups of lifting structures in the second direction.

10. The battery string correction device according to claim 8, characterized in that: A evasion portion is provided on the top of the support plate. The evasion portion is arranged opposite to the conveyor belt and is configured to evade the conveyor belt in the second direction.

11. A battery cell string connection machine, characterized in that: The cell stringing machine includes a welding ribbon supply device, a cell supply device, a stringing conveying device, a curing device, and a cell string correction device according to any one of claims 1 to 10, wherein: The welding ribbon supply device is used to provide the welding ribbon group arranged in a predetermined pattern to the serial conveying device; The battery cell supply device is used to provide battery cells to the serial conveying device; The serial conveying device is used to receive the solder ribbons and the battery cells and move the stacked solder ribbons and the battery cells to the curing device; The curing device is used to perform thermal curing treatment on the stacked solder ribbons and battery cells; The serial conveying device is also used to move the battery string that has undergone thermal curing treatment to the first correction mechanism; The first correction mechanism is used to transport the battery string from the serial connection conveying device to the receiving station of the discharge conveying mechanism, and the first correction mechanism is also used to perform a first correction on the battery string when transporting the battery string; The discharging conveying mechanism is used to convey the battery string, and the discharging conveying mechanism is also used to cooperate with the second correction mechanism to perform a second correction on the battery string; The second correction mechanism is further used to continue turning over the battery string after the second correction is performed on the battery string.

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