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 conveying mechanism, the first correction mechanism is configured to pick up battery strings which are connected in series from a previous station and place the battery strings to a receiving station of the conveying mechanism, the first correction mechanism is further configured to correct the battery strings for the first time in the process of carrying the battery strings, and the first correction mechanism comprises a plurality of correction assemblies which are uniformly arranged in the first direction; the plurality of correction assemblies are in one-to-one correspondence with the battery pieces in the battery string; and the second correcting mechanism is arranged at the receiving station. 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 stability of the battery pieces during subsequent transportation is improved, and the probability of secondary deformation of the battery pieces is reduced; the structure complexity of the whole correction device for secondary correction is remarkably reduced, meanwhile, the whole process can be smoother, and the correction efficiency is higher.

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 welding surface, where all electrodes are located. After the IBC cells are ribbon-welded into strings, the ribbons are welded to the welding surfaces of the cells. The welded strings are then transported from the front station of the welding conveyor line to the receiving station of the conveyor mechanism via a welding conveyor and a handling mechanism. The string is then delivered to the flipping station by the conveyor mechanism, where it is flipped and transferred to the next station.

[0003] During the welding process, the ribbon is heated to melt the solder layer on its surface. After welding, the ribbon gradually cools and shrinks during the transport of the cell string, pulling the cell toward the welding surface and causing the center of the cell to warp. Since cell flatness directly affects the quality of photovoltaic modules, addressing this problem of cell deformation is urgent. 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 conveying mechanism, wherein;

[0006] The first correction mechanism is configured to pick up a battery string that has been connected in series from a preceding workstation and place the battery string at a receiving workstation of a conveying mechanism. The first correction mechanism is further configured to perform a first correction on the battery string during transport. The first correction mechanism includes a plurality of correction components evenly arranged along a first direction. The plurality of correction components correspond one-to-one to the battery cells in the battery string. The correction components include a correction bracket, a pressing block, and two sets of lifting structures. The pressing block and the lifting structures are both mounted on the correction bracket. The pressing block is used to apply pressure along a second direction to the middle position of the battery cell to achieve the first correction. The two sets of lifting structures are symmetrically arranged on both sides of the pressing block and are used to provide a force to the battery cell in a direction opposite to the second direction.

[0007] The second correction mechanism is arranged at the receiving station, and the second correction mechanism includes a plurality of supporting units, each of which is configured to support the battery cell located at the receiving station in a direction opposite to the second direction.

[0008] Based on the above-mentioned battery string correction device, the battery string is corrected twice through two sets of correction mechanisms, thereby improving the stability of the battery cells during subsequent transportation and reducing the probability of the battery cells being deformed again; among them, the second correction mechanism utilizes the correction component on the first correction mechanism. After the correction component completes the first correction work on the battery string, the battery string is placed on the second correction mechanism. The second correction mechanism can use the pressure of the correction component on the battery string to correct the battery string again, thereby significantly reducing the structural complexity of the entire secondary correction device, and at the same time making the entire process smoother and the correction efficiency higher.

[0009] Optionally, the supporting unit includes a supporting portion corresponding to the lifting structure and a notch portion corresponding to the pressing block;

[0010] The supporting portion is configured to support two side edges of the battery cell located at the receiving station in a direction opposite to the second direction, the extension direction of the side edges is perpendicular to the first direction, and the notch portion is configured to avoid the pressing block in the second direction.

[0011] Furthermore, based on the above-mentioned supporting unit, the notch portion creates a suspended space in the middle part of the bottom of the battery cell, and the middle part of the battery cell is more easily deformed under the pressure of the pressing block. At the same time, both sides of the battery cell can also be stably fixed by the supporting portion. When the first correction mechanism places the battery cell on the receiving station, it only needs to make the pressing block provide a certain downward pressure on the battery cell before the lifting structure releases the battery cell to complete the secondary correction; the two correction processes are smoother, more efficient and faster.

[0012] Optionally, the notch portion and the pressing block both extend along the third direction, and the supporting portion and the pressing block are alternately arranged in the first direction.

[0013] Furthermore, based on the above-mentioned supporting unit and pressing block, the correction effect of the pressing block on the battery cell can be improved. The supporting unit can not only provide stable and reliable support for the battery cell, but also form a suspended space at the bottom of the middle position of the battery cell.

[0014] Optionally, the supporting unit includes two groups of support plates arranged along the first direction, and the two groups of support plates are respectively arranged in one-to-one correspondence with the two groups of lifting structures in the correction component. The top of the support plate has a supporting surface, and the supporting surface forms the supporting part.

[0015] Furthermore, based on the above-mentioned supporting unit, a supporting surface for supporting the edge position of the battery cell is formed by the top of the plate-like structure of the support plate, and an avoidance portion is formed in the gap between the two groups of support plates. This arrangement is more convenient for the processing of the supporting unit, wherein each group of support plates can be one or more, as long as it can be ensured that the supporting surface on the top of each group of support plates can be spliced ​​together to form a supporting portion that can stably support the battery cell.

[0016] Optionally, the second correction mechanism includes a lifting assembly, all the supporting units are mounted on a driving end of the lifting assembly, and the lifting assembly is configured to drive the supporting units to reciprocate between a first position and a second position along a second direction;

[0017] When the supporting unit is in the first position, the support plate is higher than the conveying plane of the conveying mechanism and lifts the battery cell to a set height;

[0018] When the supporting unit is located at the second position, the supporting plate is lower than the conveying plane of the conveying mechanism or is flush with the conveying plane of the conveying mechanism.

[0019] Furthermore, based on the above-mentioned second correction mechanism, the pallet can, under the drive of the lifting assembly, lift the battery cell upward and move it downward away from the battery cell, which can provide reliable support when the second correction mechanism corrects the battery cell at the receiving station, and will not affect the normal transportation of the battery cell on the conveyor belt.

[0020] Optionally, a avoidance portion is provided on the top of the support plate, and the avoidance portion is arranged corresponding to the conveyor belt of the conveying mechanism and is configured to avoid the conveyor belt of the conveying mechanism in the second direction.

[0021] 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.

[0022] 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 first direction;

[0023] The pressing block is provided with a through hole for avoiding the pulling structure.

[0024] 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.

[0025] Optionally, the arc-shaped surface is further provided with a plurality of air-cooling grooves, the bottoms of the air-cooling grooves are provided with blowing holes, and the blowing holes are connected to an air source.

[0026] 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.

[0027] Optionally, each group of the 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 in a direction opposite to the second direction to the corresponding battery cells during the stage of picking up the battery string.

[0028] 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 first correction mechanism when transporting and flipping the battery cell.

[0029] 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:

[0030] The solder tape supply device is used to provide the serial conveying device with a solder tape group arranged in a predetermined pattern; optionally, the solder tape supply device includes at least the following mechanisms: a solder tape feeding mechanism, the solder tape feeding mechanism is configured to rotate the material coil and release multiple solder tapes to provide to the downstream mechanism; a solder tape buffer mechanism, the solder tape buffer mechanism is configured to use a liftable counterweight roller to buffer solder tape of a predetermined length; a solder tape cutting mechanism, the solder tape cutting mechanism is configured to wait for the solder tape traction mechanism to pull out the solder tape of a predetermined length and then cut all the solder tapes; a solder tape traction mechanism, the solder tape traction mechanism is configured to pull the solder tape out to a predetermined length, and the pulled solder tape will be placed on the solder tape preparation mechanism; a solder tape preparation mechanism, the solder tape preparation mechanism is configured to cut, space, clamp and fix all the solder tapes; a solder tape conveying mechanism, the solder tape conveying mechanism is configured to pick up all the solder tape groups that have been cut and spaced, and transfer them to the serial conveying device, and the specific placement order of the solder tapes and battery cells is to place the solder tapes first and then the battery cells. The cell supply device is used to supply cell cells to the serial conveyor device. Optionally, the cell supply device includes at least the following mechanisms: a cell loading mechanism configured to remove cell cells from a loading container; a cell transport mechanism configured to place cell cells onto the serial conveyor device, possibly rotating them at a predetermined angle before placement. The serial conveyor device is used to receive solder ribbons and cell cells and transport the stacked ribbons and cell cells to a curing device; the curing device is used to thermally cure the stacked ribbons and cell cells; the serial conveyor device is also used to move the thermally cured cell strings to a cell string correction device. Optionally, the serial conveyor device includes a conveyor line, or includes two reciprocating conveyor mechanisms, each of which is used to carry the supplied ribbons and cell cells and deliver them to the curing device and below the first correction mechanism (prepared for discharge).

[0031] The battery string correction device is used to perform two correction treatments on the battery string; the first correction mechanism is used to transport the battery string from the front station of the serial conveying device to the receiving station of the 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 conveying mechanism is used to convey the battery string.

[0032] 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. Moreover, the second correction utilizes the downward pressure of the pressure block on the battery cell on the first correction mechanism, making the structure of the entire stringing machine simpler and lowering the cost.

[0033] 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

[0034] 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:

[0035] Figure 1 This is a schematic structural diagram of the battery string correction device according to an embodiment of the present application;

[0036] Figure 2 This is a schematic structural diagram of one of the correction components described in an embodiment of the present application;

[0037] Figure 3 for Figure 2 A schematic structural diagram of the bottom of the correction component;

[0038] Figure 4 This is a schematic structural diagram of another correction assembly according to an embodiment of the present application;

[0039] Figure 5 for Figure 4 A front view of the correction component in FIG.

[0040] Figure 6 for Figure 4 A schematic structural diagram of the bottom of the correction component;

[0041] Figure 7 This is a schematic structural diagram of the second correction mechanism and the conveyor belt according to an embodiment of the present application;

[0042] Figure 8 This is a structural schematic diagram of a battery string according to an embodiment of the present application being placed on a second correction mechanism;

[0043] Figure 9 This is a structural diagram of the battery cell according to an embodiment of the present application being placed on a support plate;

[0044] Figure 10 This is a schematic structural diagram of the support plate described in an embodiment of the present application;

[0045] Figure 11 Schematic diagram of the relative positions of the serial conveying device, the first correction mechanism, the conveying mechanism, and the second correction mechanism described in an embodiment of the present application.

[0046] Description of reference numerals:

[0047] 1. First correction mechanism; 11. Pressing block; 111. Curved surface; 112. Air cooling groove; 12. Lifting structure; 121. Suction cup;

[0048] 2. Second correction mechanism; 21. Lifting assembly; 22. Support plate; 221. Supporting surface; 222. Avoidance portion; 23. Connecting rod;

[0049] 3. Front-end workstation;

[0050] 4. Conveying mechanism; 41. Conveyor belt; 42. Turning station; 43. Receiving station. DETAILED DESCRIPTION

[0051] 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.

[0052] During the welding process, the ribbon is heated to melt the solder layer on its surface. After welding, the ribbon gradually cools and shrinks during the transport of the cell string, pulling the cell toward the welding surface and causing the center of the cell to warp. Since cell flatness directly affects the quality of photovoltaic modules, addressing this problem of cell deformation is urgent.

[0053] 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.

[0054] The present application will be described in detail below through specific embodiments.

[0055] First, refer to Figures 1 to 11As shown, this embodiment provides a battery string correction device, which includes a first correction mechanism 1, a second correction mechanism 2, and a conveying mechanism 4, wherein the first correction mechanism 1 is configured to pick up the battery string that has been connected in series from the front station 3 and place the battery string to the receiving station 43 of the conveying mechanism 4. The first correction mechanism 1 is also configured to perform a first correction on the battery string during transportation. The first correction mechanism 1 includes a plurality of correction components evenly arranged along a first direction, and the plurality of correction components correspond one-to-one to the battery cells in the battery string. The correction component includes a correction bracket, a pressing block 11 and two sets of lifting structures 12, and the pressing block 11 and the lifting structure 12 are both mounted on the correction bracket. The pressing block 11 is used to apply pressure along the second direction to the middle position of the battery cell to achieve the first correction. The two sets of pulling structures 12 are symmetrically arranged on both sides of the pressing block 11 and are used to provide the battery cell with a force in the direction opposite to the second direction. The pulling structure 12 can not only cooperate with the pressing block 11 to achieve the correction action on the battery cell, but the pulling structure 12 can also be used to pick up or release the battery cell, thereby assisting in completing the transportation, flipping and other tasks of the battery cell; the second correction mechanism 2 is arranged at the receiving station 43, and the second correction mechanism 2 includes a plurality of supporting units, each of which is configured to support the battery cell located at the receiving station 43 in a direction opposite to the second direction.

[0056] Based on the above-mentioned battery string correction device, the battery string is corrected twice through two sets of correction mechanisms, thereby improving the stability of the battery cells during subsequent transportation and reducing the probability of the battery cells being deformed again; wherein, the second correction mechanism 2 utilizes the correction component on the first correction mechanism 1. After the correction component completes the first correction work on the battery string, the battery string is placed on the second correction mechanism 2. The second correction mechanism 2 can use the pressure of the correction component on the battery string to correct the battery string again, thereby significantly reducing the structural complexity of the entire secondary correction device, and at the same time making the entire process smoother and the correction efficiency higher.

[0057] Optionally, the supporting unit includes a supporting portion corresponding to the lifting structure 12 and a notch portion corresponding to the pressing block 11; the supporting portion is configured to support two side edges of the battery cell located at the receiving station 43 in a direction opposite to the second direction, and the extension direction of the side edges is perpendicular to the first direction, and the notch portion is configured to avoid the pressing block 11 in the second direction; that is, the notch portion and the supporting portions on both sides are combined to form an "concave" shape, which can neither interfere with the downward pressure of the pressing block 11 nor provide reliable support at the side edges corresponding to the lifting structure 12, making it more convenient to form a shaping effect on the battery cell.

[0058] Furthermore, based on the above-mentioned supporting unit, the notch portion forms a suspended space in the middle part of the bottom of the battery cell, and the middle part of the battery cell is more easily deformed under the pressure of the pressing block 11. At the same time, the two sides of the battery cell can also be stably fixed by the supporting portion. When the first correction mechanism 1 places the battery cell on the receiving station 43, it only needs to make the pressing block 11 provide a certain downward pressure on the battery cell before the lifting structure 12 releases the battery cell to complete the secondary correction; the two correction processes are smoother, more efficient and faster.

[0059] Continue to refer to Figure 9 As shown, the notch portion and the pressing block 11 both extend along the third direction, and the supporting portion and the pressing block 11 are staggered in the first direction; it should be understood that each supporting unit includes two supporting portions and a notch portion, and the two supporting portions are respectively arranged on both sides of the notch portion in the first direction, and both the notch portion and the pressing block 11 match the length of the battery cell in the third direction, that is, the pressing block 11 can be completely pressed on the top of the middle position of the battery cell, and the bottom of the middle position of the battery cell can also be completely suspended.

[0060] Furthermore, based on the above-mentioned supporting unit and pressing block 11, the correction effect of the pressing block 11 on the battery cell can be improved. The supporting unit can not only provide stable and reliable support for the battery cell, but also form a suspended space at the bottom of the middle position of the battery cell.

[0061] In some embodiments, the supporting unit includes two groups of support plates 22 arranged along the first direction. The two groups of support plates 22 are respectively arranged to correspond one to one with the two groups of lifting structures 12 in the correction component. The top of the support plate 22 has a supporting surface 221, and the supporting surface 221 forms a supporting portion.

[0062] Furthermore, based on the above-mentioned supporting unit, a supporting surface 221 for supporting the edge position of the battery cell is formed through the top of the plate-like structure of the support plate 22, and an avoidance portion 222 is formed in the gap between the two groups of support plates 22. This arrangement is more convenient for the processing of the supporting unit, wherein each group of support plates 22 can be one or more, as long as it can be ensured that the supporting surface 221 on the top of each group of support plates 22 can be assembled to form a supporting portion that can stably support the battery cell.

[0063] Optionally, the second correction mechanism 2 includes a lifting assembly 21, all supporting units are installed on the driving end of the lifting assembly 21, and the lifting assembly 21 is configured to drive the supporting unit to reciprocate between the first position and the second position along the second direction; when the supporting unit is in the first position, the pallet 22 is higher than the conveying plane of the conveying mechanism 4, and lifts the battery cell to a set height; when the supporting unit is in the second position, the pallet 22 is lower than the conveying plane of the conveying mechanism 4 or is flush with the conveying plane of the conveying mechanism 4; in some embodiments, all the pallets 22 can be connected in series through a connecting rod 23 extending along the first direction, so as to achieve synchronous movement in the second direction.

[0064] Furthermore, based on the above-mentioned second correction mechanism 2, the pallet 22 can, under the drive of the lifting component 21, 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 receiving station 43, and will not affect the normal transportation of the battery cell on the conveyor belt 41.

[0065] Continue to refer to Figure 9 and Figure 10 As shown, a avoidance portion 222 is provided on the top of the pallet 22, and the avoidance portion 222 is arranged corresponding to the conveyor belt 41 of the conveying mechanism 4, and is configured to avoid the conveyor belt 41 of the conveying mechanism 4 in the second direction, wherein the width of the avoidance portion 222 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 222 in the second direction is greater than the thickness of the conveyor belt 41.

[0066] Furthermore, based on the above-mentioned pallet 22, it can be ensured that the pallet 22 can be smoothly switched between the first position and the second position every time, thereby achieving the predetermined goal while reducing the probability of interference between the pallet 22 and the conveyor belt 41.

[0067] Continue to refer to Figure 2 and Figure 6 As shown, the surface of the pressing block 11 facing the battery cell is an arcuate surface 111, and the axis of the arcuate surface 111 is parallel to a third direction perpendicular to the first direction; a through hole is provided on the pressing block 11 for avoiding the pulling structure 12, wherein the position where the arcuate surface 111 makes linear 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 111 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 11 in the second direction can match the battery cell, and a through hole structure for avoiding the pulling structure 12 can be opened on the pressing block 11.

[0068] Based on the above-mentioned pressing block 11, an effective and uniform extrusion force can be applied to the battery cell to improve the correction efficiency. At the same time, the curved surface 111 can also create a gap between the two sides of the battery cell and the pressing block 11, thereby avoiding the problem of interference between the lifting structure 12 and the battery cell and the pressing block 11.

[0069] Optionally, the arc-shaped surface 111 is further provided with a plurality of air-cooling grooves 112, and the bottom of the air-cooling grooves 112 is provided with blowing holes, which are connected to the air source, wherein the air-cooling grooves 112 form a gas flow channel. When the pressing block 11 contacts the battery cell, the air source can provide positive pressure or negative pressure, so that flowing gas is generated in the air-cooling grooves 112 to cool the battery cell and the welding strip.

[0070] Furthermore, based on the air cooling tank 112 , the gas flowing in the air cooling tank 112 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.

[0071] Optionally, each air-cooling groove 112 is arranged in parallel with the welding strip, that is, each air-cooling groove 112 extends along the first direction and can completely cover the position of the welding strip. The air-cooling groove 112 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 112 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 112 can cool a welding strip, further improving the cooling efficiency of the welding strip.

[0072] Optionally, each group of lifting structures 12 includes a plurality of suction cups 121 arranged along the third direction and connected to the air source. The suction cups 121 are used to continuously provide adsorption force in a direction opposite to the second direction to the corresponding battery cell during the stage of picking up the battery string.

[0073] Furthermore, based on the above-mentioned pulling structure 12, the pulling structure 12 can be more conveniently combined with and separated from the battery cell, thereby significantly improving the efficiency of the entire correction work, and when the pressure block 11 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 11 and preventing the battery cell from falling; and, the suction cup 121 can achieve rapid combination and separation with the battery cell, thereby improving the efficiency of the first correction mechanism 1 when transporting and flipping the battery cell.

[0074] Continue to refer to Figure 1 、 Figure 7 、 Figure 8 and Figure 11As shown, in a second aspect, the present application provides a cell stringing machine, which includes a solder ribbon supply device, a cell supply device, a stringing conveying device, a curing device, and the above cell string correction device, wherein:

[0075] The solder tape supply device is used to provide the serial conveying device with a solder tape group arranged in a predetermined pattern; optionally, the solder tape supply device includes at least the following mechanisms: a solder tape feeding mechanism, the solder tape feeding mechanism is configured to rotate the material coil and release multiple solder tapes to provide to the downstream mechanism; a solder tape buffer mechanism, the solder tape buffer mechanism is configured to use a liftable counterweight roller to buffer solder tape of a predetermined length; a solder tape cutting mechanism, the solder tape cutting mechanism is configured to wait for the solder tape traction mechanism to pull out the solder tape of a predetermined length and then cut all the solder tapes; a solder tape traction mechanism, the solder tape traction mechanism is configured to pull the solder tape out to a predetermined length, and the pulled solder tape will be placed on the solder tape preparation mechanism; a solder tape preparation mechanism, the solder tape preparation mechanism is configured to cut, space, clamp and fix all the solder tapes; a solder tape conveying mechanism, the solder tape conveying mechanism is configured to pick up all the solder tape groups that have been cut and spaced, and transfer them to the serial conveying device, and the specific placement order of the solder tapes and battery cells is to place the solder tapes first and then the battery cells. The cell supply device is used to supply cell cells to the serial conveyor device. Optionally, the cell supply device includes at least the following mechanisms: a cell loading mechanism, which is configured to remove cell cells from a loading container; a cell transport mechanism, which is configured to place cell cells onto the serial conveyor device, possibly rotating them by a predetermined angle before placement. The serial conveyor device is used to receive solder ribbons and cell cells and transport the stacked ribbons and cell cells to a curing device; the curing device is used to thermally cure the stacked ribbons and cell cells; the serial conveyor device is also used to move the thermally cured cell strings to a cell string correction device. Optionally, the serial conveyor device includes a conveyor line, or includes two reciprocating conveyor mechanisms 4, each conveyor mechanism 4 being used to carry the supplied solder ribbons and cell cells and deliver them to the curing device and below the first correction mechanism 1 (prepared for discharge).

[0076] The battery string correction device is used to perform two correction processes on the battery string; the first correction mechanism 1 is used to transport the battery string from the front station 3 of the serial conveying device to the receiving station 43 of the 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 conveying mechanism 4 is used to transport the battery string from the receiving station 43 to the flipping station 42, and then transfer it to the back station.

[0077] 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. In addition, the second correction utilizes the downward pressure of the pressure block 11 on the first correction mechanism 1 on the battery cell, making the structure of the entire stringing machine simpler and lower in cost.

[0078] 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.

[0079] 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.

[0080] 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 conveying mechanism, wherein; The first correction mechanism is configured to pick up a battery string that has been connected in series from a front-end workstation and place the battery string at a receiving workstation of the conveying mechanism. The first correction mechanism is also configured to perform a first correction on the battery string during transportation. The first correction mechanism includes a plurality of correction components evenly arranged along a first direction. The plurality of correction components correspond one-to-one to the battery cells in the battery string. The correction components include a correction bracket, a pressing block, and two sets of lifting structures. The pressing block and the lifting structures are both mounted on the correction bracket. The pressing block is used to apply pressure in a second direction to the middle position of the battery cell to achieve the first correction. The two sets of lifting structures are symmetrically arranged on both sides of the pressing block and are used to provide a force to the battery cell in a direction opposite to the second direction. The second correction mechanism is disposed at the receiving station, and includes a plurality of supporting units, each of which is configured to support the battery cell located at the receiving station in a direction opposite to the second direction.

2. The battery string correction device according to claim 1, characterized in that: The supporting unit includes a supporting portion corresponding to the lifting structure and a notch portion corresponding to the pressing block; The supporting portion is configured to support two side edges of the battery cell located at the receiving station in a direction opposite to the second direction, the extension direction of the side edges is perpendicular to the first direction, and the notch portion is configured to avoid the pressing block in the second direction.

3. The battery string correction device according to claim 2, characterized in that: The notch portion and the pressing block both extend along the third direction, and the supporting portion and the pressing block are alternately arranged in the first direction.

4. The battery string correction device according to claim 2, characterized in that: The supporting unit includes two groups of supporting plates arranged along a first direction, and the two groups of supporting plates are respectively arranged in one-to-one correspondence with the two groups of lifting structures in the correction component. The top of the supporting plate has a supporting surface, and the supporting surface forms the supporting part.

5. The battery string correction device according to claim 4, characterized in that: The second correction mechanism includes a lifting assembly, all of the supporting units are mounted on a driving end of the lifting assembly, and the lifting assembly is configured to drive the supporting units to reciprocate between a first position and a second position along a second direction; When the supporting unit is in the first position, the support plate is higher than the conveying plane of the conveying mechanism and lifts the battery cell to a set height; When the supporting unit is located at the second position, the supporting plate is lower than the conveying plane of the conveying mechanism or is flush with the conveying plane of the conveying mechanism.

6. The battery string correction device according to claim 4, characterized in that: A evasion portion is provided on the top of the support plate. The evasion portion is arranged corresponding to the conveyor belt of the conveying mechanism and is configured to evade the conveyor belt of the conveying mechanism in the second direction.

7. 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 first direction; The pressing block is provided with a through hole for avoiding the pulling structure.

8. The battery string correction device according to claim 7, 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.

9. The battery string correction device according to claim 1, 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.

10. 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 9, 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 transport 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 string conveying device is also used to move the battery string that has undergone thermal curing treatment to the battery string correction device; The battery string correction device is used to perform two correction processes on the battery string.

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