CN111697105B

CN111697105B - Lamination device and battery string preparation device

Info

Publication number: CN111697105B
Application number: CN202010591200.4A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2024-06-04
Anticipated expiration: 2040-06-24
Also published as: CN111697105A

Abstract

The application discloses a lamination device which comprises a plurality of lamination platforms, a lamination lifting mechanism for driving the lamination platforms to move along the vertical direction and a lamination translation mechanism for driving the lamination platforms to move along the linear direction; through the movement in the vertical direction, the heights of two adjacent lamination platforms can be different, so that the lamination platforms can move along the horizontal direction; when the horizontal projections of the battery piece and the second end of the welding strip are overlapped, the battery piece contacts the second end of the welding strip through movement in the vertical direction, lamination is completed, and then the battery string is rapidly prepared. The application also discloses a battery string preparation device, which comprises the lamination device, a battery piece feeding device for feeding battery pieces and a welding strip feeding device for feeding welding strips, wherein the battery pieces and the welding strips form a string welding unit; the lamination device can also realize the overlapping of the series welding units, so that the battery string can be conveniently prepared.

Description

Lamination device and battery string preparation device

Technical Field

The application relates to the technical field of photovoltaic equipment, in particular to a lamination device and a battery string preparation device.

Background

When the conventional method is used to prepare the battery string, referring to fig. 1, a battery piece 1' is usually laid first, and then a welding strip 2' is laid on the battery piece 1', so that the second end of the welding strip 2' falls behind the battery piece 1 '; then, a battery piece 1' is laid, and the battery piece 1' is covered on the second end of the laid welding strip 2', then a welding strip 2' is paved on the battery piece 1', and likewise, the second end of the welding strip 2' falls behind the battery piece 1 '; then, a battery piece 1' "is laid on the second end of the welding strip 2", and the welding strip 2' "… … is laid on the battery piece 1 '" so that a battery piece and a welding strip are sequentially laid, and finally the battery string is formed.

The manufacturing method of such battery strings is inefficient.

Disclosure of Invention

The application provides a lamination device and a battery string preparation device, which are used for solving the problem of low battery string preparation efficiency in the prior art.

In order to solve the technical problems, the application adopts a technical scheme that: there is provided a lamination device comprising: the lamination platforms are arranged along a straight line and can respectively receive a series welding unit; the lamination lifting mechanism is connected with the lamination table and can drive the lamination table to move along the vertical direction; wherein, any lamination table can move along the vertical direction under the drive of the lamination lifting mechanism; or one lamination table is relatively and fixedly arranged along the vertical direction; the lamination translation mechanism is connected with the lamination table and can drive the lamination table to move along the linear direction; any lamination table can move along a straight line direction under the drive of the lamination translation mechanism; or one lamination table is relatively and fixedly arranged along the straight line direction; the series welding unit is formed by paving a battery piece and a welding belt; in any series welding unit, the first end of the welding strip is positioned on the battery piece, and the second end of the welding strip protrudes out of the battery piece; the battery piece on one lamination table is opposite to the second end of the welding strip on the other lamination table; the lamination platforms can move along the vertical direction and the linear direction through the lamination lifting mechanism and the lamination translation mechanism so as to facilitate the adjacent two lamination platforms, wherein the battery piece on one lamination platform is stacked on the second end of the welding strip on the other lamination platform; the straight line direction is the arrangement direction of the lamination platforms.

Further, the lamination device also comprises a lamination conveying mechanism which is arranged on one side of the lamination table, can receive the series welding unit after lamination and can convey the series welding unit to the downstream.

Further, a plurality of series welding units to be laminated are arranged on the laminated conveying mechanism at intervals; in the non-lamination state, the surface of the lamination table supporting series welding unit is not higher than the surface of the lamination conveying mechanism supporting series welding unit; before lamination, the lamination table is in one-to-one correspondence with the series welding units on the lamination conveying mechanism; when the lamination is carried out, the lamination lifting mechanism drives the lamination table to ascend, penetrate through the lamination conveying mechanism and jack up the corresponding series welding unit.

Further, the lamination station comprises two edge support stations; the two edge support tables are respectively arranged at two sides of the lamination conveying mechanism in the width direction; the series welding unit part protrudes out of the lamination conveying mechanism along the width direction; the two edge support tables can support the protruding edge parts of the series welding unit.

Further, the lamination table also comprises an intermediate support table arranged between the two edge support tables; the middle supporting table can penetrate through the middle parts of the lamination conveying mechanism and the bearing series welding unit.

Further, the surface of the middle support table for receiving the series welding unit is lower than the surface of the side support table for receiving the series welding unit.

Further, an air hole is formed in the lamination table and communicated with negative pressure suction equipment; the negative pressure suction equipment can exhaust the air hole, so that negative pressure is formed in the air hole, and then the series welding unit positioned on the lamination table is adsorbed.

Further, the lamination device further comprises a base, a notch extending in the straight line direction is formed in the base, and the lamination table can move through the notch.

Further, the base is also provided with a welding groove extending along the straight line direction; the welding belt groove can accommodate the welding belt of the series welding unit, so that the position of the welding belt is limited, and the welding belt is prevented from shifting in the lamination process.

The application also provides a battery string preparation device, which comprises the lamination device and further comprises: the battery piece feeding device is arranged at the upstream of the lamination device and can supply battery pieces to the lamination device; the welding strip feeding device is arranged at the upstream of the lamination device and can supply welding strips to the lamination device; a plurality of series welded unit laminations capable of forming a battery string; in the battery string, the battery pieces of any two adjacent series welding units are stacked on the second end of the welding strip of the other series welding unit.

The application provides a lamination device which comprises a plurality of lamination platforms, a lamination lifting mechanism for driving the lamination platforms to move along the vertical direction and a lamination translation mechanism for driving the lamination platforms to move along the linear direction; the plurality of series welding units to be laminated can be supported by the lamination table one by one; any two adjacent lamination platforms, wherein the battery piece on one lamination platform faces to the second end of the welding strip on the other lamination platform; in this way, the adjacent two lamination platforms can be made to be different in height through the movement in the vertical direction, and therefore, the battery piece on one lamination platform is higher than the second end of the welding strip on the other lamination platform; or the battery piece of one battery piece is lower than the second end of the welding strip of the other battery piece on the lamination table; thus, when the lamination table moves along the horizontal direction, two adjacent series welding units cannot collide with each other; when the horizontal projections of the battery piece and the second end of the welding strip are overlapped, the battery piece contacts the second end of the welding strip through movement in the vertical direction, and lamination is completed. The lamination of a plurality of series welding units can be rapidly realized through the relative movement of a plurality of lamination tables in the vertical direction and the linear direction, and then the battery strings can be rapidly prepared.

The application also provides a battery string preparation device, which comprises the lamination device, a battery piece feeding device and a welding strip feeding device; the lamination device can receive the battery piece supplied by the battery piece feeding device, so that the welding strip feeding device can conveniently lay the welding strip on the battery piece; therefore, the preparation of the series welding unit can be completed on the lamination device; further, the lamination device can also realize overlapping of the series welding units, and then the battery string is conveniently prepared.

Drawings

For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of a prior art construction of a battery string;

FIG. 2 is a schematic diagram of two series-welded units stacked together;

FIG. 3 is a schematic diagram of another two series-welded units according to the present application;

FIG. 4 is a schematic diagram of a further two series welded units according to the present application;

FIG. 5 is a schematic view of a battery string constructed of stacked series welded cell sheets of FIG. 4;

FIG. 6 is a schematic top view of the battery string of FIG. 5;

FIG. 7 is a schematic diagram of a further two series welded units stacked;

FIG. 8 is a schematic view of a battery string constructed of stacked series welded cell sheets of FIG. 7;

Fig. 9 is a schematic structural view of a battery string preparing apparatus according to the present application;

FIG. 10 is a schematic side view of the battery sheet handling mechanism of FIG. 9;

FIG. 11 is a schematic structural view of a solder strip feeding device provided by the application;

FIG. 12 is a schematic view of a solder strip cutting mechanism, a solder strip pulling mechanism and a solder strip guiding mechanism according to the present application;

FIG. 13 is a schematic side elevational view of the solder strip cutting mechanism of FIG. 12;

FIG. 14 is a schematic top view of the first and second dies of FIG. 13 in one state;

fig. 15 is a schematic top view of the first and second dies of fig. 13 in another state;

FIG. 16 is a schematic view of the lamination assembly of FIG. 9;

FIG. 17 is a schematic side elevational view of the lamination device of FIG. 16 with the lamination transport mechanism and base omitted;

FIG. 18 is a schematic side elevational view of the lamination station of FIG. 16 in another orientation;

Fig. 19 is a schematic view of the structure of the base of fig. 16.

Detailed Description

It should be noted that, for convenience of understanding of the drawings, the drawing shows XYZ-direction axes, wherein the X-direction is a straight-line direction in the illustrated embodiment, the Y-direction is a direction perpendicular to the straight-line direction in the horizontal plane, and the Z-direction is a vertical direction.

It should also be explained that, to better illustrate the contents of the drawings, some of the drawings are turned 90 ° to the left for reading; however, when the directions of "left", "right", "up", "down", etc. are described in the drawings, the directions of the numerals in the drawings are used; that is, when the number is set to the left in the figure, the azimuth is the case when the figure is turned 90 ° to the right.

Firstly, a series welding unit 10 needs to be explained, and the series welding unit 10 is paved by a battery piece 1 and a welding strip 2; in any series welding unit 10, the first end 2a of the welding strip 2 is positioned on the battery piece 1, and the second end 2b protrudes from the battery piece 1.

It is known that the solder strip 2 has a long strip structure, and has opposite ends, i.e., a first end 2a and a second end 2b, along the length of the solder strip 2. The structure and function of the first end 2a and the second end 2b (connecting the battery plate 1) of the butt welding belt 2 are the same, so that the butt welding belt is divided into a first end 2a and a second end 2b for convenience of description and understanding. For this purpose, it can be understood that in the series welding unit 10, one end of the welding strip 2 is connected to the battery cell 1, and the other end protrudes outside the battery cell 1.

For a series welding unit 10, it generally includes only one battery piece 1, but according to the specification and process requirements of the battery piece 1, a plurality of welding strips 2 (for example, six welding strips, nine welding strips and the like) may be laid on one battery piece 1; the welding strips 2 are arranged corresponding to the grid lines on the surfaces of the battery pieces 1, and can play a role in guiding flow while connecting two adjacent battery pieces 1.

Referring specifically to fig. 2, 3, 4 and 7, five series welding units 10 are shown. It can be seen that the series welding unit 10 provided by the present application is not limited to a specific connection manner of the battery piece 1 and the welding strip 2. For example, the battery piece 1 has a front surface and a back surface, and the first end 2a of the welding strip may be laid on the front surface of the battery piece 1 or may be laid on the back surface of the battery piece 1; when a plurality of welding strips 2 are paved on one battery piece 1, part of the welding strips 2 can be paved on the front surface of the battery piece 1, and the other part of the welding strips 2 can be paved on the back surface of the battery piece 1.

Depending on the process, in other embodiments, one series welding unit 10 may include only one battery piece 1 and one welding strip 2; or one series welding unit 10 may include a plurality of battery pieces 2 (the plurality of battery pieces 2 may be connected by a welding strip 2, or may be directly connected in contact with each other); or the orientations of the plurality of bonding tapes 2 in the series welding unit 10 may be different … …, which is not particularly limited in the present application.

Further, the plurality of series-welded units 10 are laminated such that the battery cells 1 of one series-welded unit 10 are stacked on the second ends 2b of the welding strips of the other series-welded unit 10.

In short, the laminate is such that a plurality of series welded units 10 are stacked together. A sufficient number of series welding units 10 are stacked to form a battery string 20; the series welding units 10 with insufficient numbers are overlapped to form a lamination assembly; the lamination assembly continues to laminate and, when the number of series welded cells 10 is sufficiently large, the battery string 20 is ultimately formed.

In general, in any three consecutive series welding units 10 in the lamination assembly or the battery string 20, the battery piece 1 of the middle series welding unit 10 and the second end 2b of the welding strip connected with one series welding unit 10; at the same time, the second ends 2b of the welding strips of the intermediate series welding unit 10 are connected with the battery pieces 1 of the other series welding unit 10.

In special cases, for example, in any lamination assembly or battery string 20, the first string welding unit 10, the battery piece 1 of which is not connected to the second ends 2b of the welding strips of the other string welding units 10; as another example, the second end 2b of the strap of the last series-welded unit 10 in any lamination assembly or battery string 20 is not connected to the battery cells 1 of the other series-welded units 10.

After lamination, the solder strip 2 can connect two adjacent cells 1, wherein a first end 2a of the solder strip is connected to a cell 1 of the series welding unit 10 where it is located, and a second end 2b is connected to a cell 1 of another series welding unit 10.

Referring to fig. 5 and 8, the battery string 20 shown in fig. 5 is laminated by the string welding unit 10 shown in fig. 4; the first end 2a of the welding strip of any series welding unit 10 is positioned on the upper surface of the battery piece 1, and the second end 2b of the welding strip protrudes out of the lower surface of the battery piece 1, which can be connected with the battery piece 1 of another series welding unit 10. In addition, in the battery string 20 shown in fig. 5, the first series welding unit 10, that is, the rightmost series welding unit 10 is shown, and the lower surface of the battery piece 1 needs to be connected with the head end welding strip 2A; while the last series-welding unit 10 of the battery string 20, i.e., the leftmost one series-welding unit 10 shown in the drawing, has the welding strip 2 constituting the end welding strip 2B; the head-end and tail-end bonding tapes 2A and 2B are longer than the general bonding tape 2 connecting the adjacent two series-welding units 10 in the battery string 20, and can be connected with bus bars (not shown) so as to realize the bus of the battery string 20.

The battery string 20 shown in fig. 8 is laminated by the string welding unit 10 shown in fig. 7; the first end 2a of the welding strip of any series welding unit 10 is positioned on the lower surface of the battery piece 1, and the second end 2b of the welding strip protrudes out of the upper surface of the battery piece 1, which can be connected with the battery piece 1 of another series welding unit 10. Similarly, in the battery string 20 shown in fig. 8, the first series welding unit 10, that is, the leftmost series welding unit 10 in the drawing, is required to connect the head end welding strip 2A to the upper surface of the battery piece 1; and the last series-welded cell 10 of the battery string 20 a, i.e., the rightmost one series-welded cell 10 shown, has its strap 2 constituting the end strap 2B.

It will be readily appreciated that when the battery string 20 is provided with the head-end bonding tape 2A, the head-end bonding tape 2A may be divided into a part of the first series-welding unit 10, that is, the battery string 10 shown in fig. 5 or 8, the first series-welding unit 10 includes one battery piece 1, a group of head-end bonding tapes 2A, and a group of common bonding tapes 2, the last series-welding unit 10 includes one battery piece 1 and a group of head-end bonding tapes 2A, and the other series-welding units 10 each include one battery piece 1 and a group of common bonding tapes 2. Wherein, the welding strips are the welding strips no matter the head welding strip 2A, the tail welding strip 2B or the common welding strip 2, and the length specifications are different.

The present application provides a battery string preparing apparatus, referring to fig. 9, comprising: a battery piece feeding device 100 for feeding the battery piece 1; the welding strip feeding device 200 is used for feeding welding strips 2; the lamination device 300 is provided downstream of the battery piece feeding device 100 and the solder strip feeding device 200, and is capable of receiving the battery pieces 1 supplied from the battery piece feeding device 100 and the solder strips 2 supplied from the solder strip feeding device 200.

The lamination device 300 includes a lamination stage 310 for receiving the battery pieces 1 and the welding strips 2 to form a series welding unit 10.

Specifically, during loading, the battery piece output by the battery piece loading device 100 and the welding strip 2 output by the welding strip loading device 200 are paved together, the first end 2a of the welding strip is positioned on the battery piece 1, and the second end 2b of the welding strip protrudes out of the battery piece 1, so as to form the series welding unit 10. Lamination station 310 may be used to receive the built series of welding units 10, or series of welding units 10 may be completed on lamination station 310, for example: the battery piece feeding device 100 firstly conveys the battery piece 1 to the lamination table 310, and then the welding strip feeding device 200 spreads the welding strip 2 on the battery piece 1, so that a first end 2a of the welding strip is lapped on the upper surface of the battery piece 1, and a second end 2b of the welding strip protrudes out of the battery piece 1; or, during loading, the solder strip loading device 200 first spreads the solder strip 2 onto the lamination stage 310, and then the battery piece loading device 100 covers the battery piece 1 above the first end 2a of the solder strip, so that the lower surface of the battery piece 1 contacts the first end 2a of the solder strip, and the second end 2b of the solder strip protrudes from the battery piece 1.

The following describes three ways of using lamination apparatus 300:

example 1.

Lamination station 310 is only used to construct or receive series welded unit 10.

Lamination apparatus 300 further includes a lamination drive mechanism capable of handling series welded units 10 on lamination table 310 and then laminating series welded units 10.

In this embodiment, the lamination driving mechanism includes a lamination handling assembly (not shown) and a lamination transfer platform (not shown). At this time, the lamination handling assembly can handle the series welding unit 10 from the lamination stage 310 and transfer the series welding unit 10 to the lamination transfer platform; the lamination transfer platform is used for the series welding unit 10 to laminate.

After the second series welding unit 10 is carried by the lamination carrying assembly, the series welding unit 10 carried later can be stacked on the series welding unit 10 which is already placed in place, so that the battery piece 1 of the later series welding unit 10 is stacked on the second end 2b of the welding strip of the prior series welding unit 10; a predetermined number of series welding units 10 complete the lamination and form a battery string 20 on a lamination transfer platform.

The lamination transfer platform may be a platform with a certain length, which is only used for receiving the series welding unit 10 and providing the space required by the lamination of the series welding unit 10. Or the lamination transfer platform may employ a conveyor belt assembly; the series welding units 10 are placed on the surface of the conveyor belt, one series welding unit 10 is in place, and the conveyor belt is shifted forward by one station, so that the second ends 2b of the welding strips of the series welding unit 10 are positioned at the lamination station; when the next series welding unit 10 is carried to the lamination station, the battery piece 1 of the series welding unit can be directly pressed on the second end 2b … … of the welding strip, and the lamination transfer platform can not only realize the carrying of the series welding unit 10, but also can convey the series welding unit 10 to the downstream; further, by intermittent movement of the conveyor belt, the lamination station can be defined so that the lamination handling assembly can deliver the series of welding units 10 to the same location each time, thereby rapidly and accurately performing lamination.

To sum up, the lamination station refers to a working station where the series welding unit 10 realizes lamination. The lamination station may be a fixed location where the battery plate 1 and the second end 2b of the strap are in contact when lamination is performed by any of the series welding units 10. Or the lamination station may be in a changed position, for example, with one series welding unit 10 in place and the next series welding unit 10 stacked on its second end 2b … …, the lamination station being moved back. Alternatively, the lamination station may be a location having a certain range, for example, a plurality of series welding units 10 are laminated at the same time, and the positions where the plurality of series welding units 10 are stacked all belong to the lamination station.

Further, in this embodiment, lamination apparatus 300 may include a plurality of lamination stations 310 to facilitate simultaneous construction or reception of a plurality of series welded units 10. At this time, the lamination handling assembly can handle the series welding units 10 one by one from each lamination stage 310, or can handle all the series welding units 10 at the same time; finally, the lamination handling assembly carries each series welding unit 10 to a lamination transfer platform to realize lamination.

Wherein, lamination transport subassembly can adopt transport components such as robot, overhead traveling crane.

Example 2.

Lamination station 310 is used not only to build or receive series welded unit 10, but also as a lamination station.

In this case, the lamination assembly 300 comprises a plurality of lamination stations 310, the lamination stations 310 being arranged in a line and each being able to receive a series welding unit 10. Lamination device 300 also includes a lamination drive mechanism; the lamination driving mechanism includes: a lamination lifting mechanism 320 connected to the lamination stage 310 and capable of driving the lamination stage 310 to move in a vertical direction; lamination translation mechanism 330 is coupled to lamination stage 310 and is capable of driving lamination stage 310 to move in a linear direction.

In the present embodiment, the straight direction is an arrangement direction of the plurality of lamination stages 310.

Referring to fig. 9, 16 and 17, by providing a plurality of lamination stations 310, the lamination apparatus 300 is capable of simultaneously receiving a plurality of series welded units 10. So that the battery piece 1 of one series welding unit 10 faces the second end 2b of the welding strip of the other series welding unit 10 on any two adjacent lamination tables 310; in this manner, adjacent two lamination platforms 310 can be at different heights by the lamination lifting mechanism 320; thereby facilitating the lamination translation mechanism 330 to drive the lamination platforms 310 to mutually approach along the linear direction, and avoiding the mutual collision of the approaching series welding units 10; the battery pieces 1 of one series welding unit 10 to be adjacent are overlapped with the horizontal projection part of the second end 2b of the welding strip of the other series welding unit 10, and the lamination lifting mechanism 320 can drive the lamination platforms 310 to be mutually close to each other along the vertical direction, so that the battery pieces 1 contact the second end 2b of the welding strip, and lamination is realized.

It should be noted that, the lamination lifting mechanism 320 and the lamination translation mechanism 330 may act one by one, that is, the lamination lifting mechanism 320 drives the lamination table 310 to move in the vertical direction, and the lamination translation mechanism 330 drives the lamination table 310 to move in the linear direction; the battery pieces 1 of one series welding unit 10 to be adjacent are overlapped with the horizontal projection part of the second end 2b of the welding strip of the other series welding unit 10, and the lamination lifting mechanism 320 drives the lamination table 310 to move reversely along the vertical direction, so that the series welding units 10 are overlapped.

Or the lamination lifting mechanism 320 and the lamination translation mechanism 330 may act synchronously, that is, when the lamination lifting mechanism 320 drives the lamination platforms 310 to move away from each other and/or move close to each other in the vertical direction, the lamination translation mechanism 330 drives the lamination platforms 310 to move close to each other in the linear direction; as long as it is ensured that the heights of two adjacent series welding units 10 are different before the two series welding units 10 approach to each other in the straight line direction; and/or, before the horizontal projections of two adjacent series welding units 10 are overlapped in place, the heights of the two series welding units 10 are different.

In addition, when the lamination stages 310 are moved close to each other in a straight direction, the lamination stages 310 may be moved toward the same lamination stage 310 or the same position (for example, the lamination stages 310 are arranged in a left-right direction, and the lamination stages 310 are moved toward a middle position and close to each other when lamination is performed; in this case, the lamination stages 310 on the left side of the middle position are moved rightward and the lamination stages 310 on the right side of the middle position are moved leftward), so that lamination of all the series welding units 10 is performed at one time. Or the lamination platforms 310 can be divided into a plurality of groups, and each lamination platform 310 in one group is close to each other to realize one-time approaching; subsequently, the groups of lamination stations 310 are brought closer together again, achieving a second approach … …, ultimately achieving lamination of all series welded units 10.

When the lamination platforms 310 are far away from each other in the vertical direction, the lamination platforms 310 may all move upward or downward, and as long as the movement amplitudes are different, the height difference of the adjacent lamination platforms 310 can be realized. Or a plurality of lamination stations 310, a part of the lamination stations 310 moves upward and a part of the lamination stations 310 moves downward, it is also possible to realize the difference in height of the adjacent lamination stations 310.

Similarly, when the lamination platforms 310 approach each other in the vertical direction, they can move upward or downward synchronously to different degrees, or can move upward or downward partially, so that the cascade welding units 10 can be stacked.

For example, in constructing the battery string 20 shown in fig. 5, the lamination device 300 is illustrated as including four lamination stages 310; referring to fig. 16 and 17, four lamination stages 310 are arranged at intervals in the left-right direction, and each receive one series welding unit 10; on either lamination stage 310, the battery piece 1 is on the right, the first end 2a of the welding strip is connected with the upper surface of the battery piece 1, and the second end 2b protrudes to the left side of the battery piece 1; thus, on any two adjacent lamination stations 310, the battery piece 1 on one lamination station 310 is opposite to the second end 2b of the welding strip on the other lamination station 310. The series welding unit 10 is in place, and the lamination lifting mechanism 320 drives the lamination platforms 310 to move upwards in the vertical direction, so that the heights of the four lamination platforms 310 decrease from left to right; thus, on any two adjacent lamination stations 310, the battery piece 1 on one lamination station 310 is higher than the second end 2b of the welding strip on the other lamination station 310. Lamination translation mechanism 330 drives lamination stations 310 to the right so that four lamination stations 310 approach each other to any two adjacent lamination stations 310, with battery sheet 1 on one lamination station 310 overlapping with the horizontal projection of second end 2b of the solder strip on the other lamination station 310. Lamination lift mechanism 320 drives lamination stage 310 downward in a vertical direction such that battery sheet 1 contacts strap second end 2b. Thus, the four series welded units 10 are laminated together to form a laminated assembly. By constructing a plurality of lamination assemblies by lamination apparatus 300, the battery cells 1 in one lamination assembly that are not in contact with the second ends 2b of the solder strips are stacked onto the second ends … … of the solder strips that are not in contact with the battery cells 1 in the other lamination assembly, and thus, a sufficient number of series-welded units 10 are stacked to finally form the battery string 20.

Wherein, the lamination lifting mechanism 320 can adopt a cylinder, an electric cylinder or a linear module and other driving components which are arranged along the vertical direction; lamination translation mechanism 330 may employ a cylinder, an electric cylinder, or a linear die set or like drive member arranged in a first direction.

Further, any lamination stage 310 can move in the vertical direction under the drive of the lamination lifting mechanism 320; or one of the lamination stations 310 is relatively fixedly disposed in a vertical direction.

Further, any lamination stage 310 can move in a linear direction under the drive of the lamination translation mechanism 330; or one of the lamination stages 310 is relatively fixedly disposed in a straight line direction;

As can be appreciated, since the motion amplitude of each lamination stage 310 may be different, when any lamination stage 310 can move in a vertical direction and/or a linear direction, the lamination apparatus 300 may include a plurality of lamination lifting mechanisms 320 and/or a plurality of lamination translation mechanisms 330; wherein, lamination lifting mechanism 320 or lamination translation mechanism 330 corresponds with lamination platform 310 one by one, lamination platform 310 can be driven via lamination lifting mechanism 320 or lamination translation mechanism 330 that corresponds, independently along vertical direction or rectilinear direction to satisfy the needs of lamination.

Or a plurality of lamination stations 310, one lamination station 310 is used as a reference member and does not move in a vertical direction and/or a linear direction. For example, in the case of the orientation shown in fig. 17, when one lamination stage 310 does not move up and down in the vertical direction, in order to achieve the decrease in height from left to right of four lamination stages 310, the lamination stage 310 on the left side of the reference lamination stage 310 may be moved upward, while the lamination stage 310 on the right side may be moved downward; similarly, to achieve that the four lamination stations 310 approach each other in a straight direction, the lamination station 310 on the left side of the reference lamination station 310 is moved rightward, and the lamination station 310 on the right side is moved leftward. It will be appreciated that the lamination stage 310 may also be adapted to accommodate lamination without vertical and/or linear movement.

When the reference lamination stage 310 is present, since the reference lamination stage 310 does not move in the vertical direction and/or the linear direction, the lamination lifting mechanism 320 or the lamination translating mechanism 330 may not be provided corresponding to the reference lamination stage 310.

In addition, when one lamination stage 310 connects the lamination lifting mechanism 320 and the lamination translating mechanism 330 at the same time, the lamination stage 310 may be disposed at the output end of the lamination lifting mechanism 320, and the main body of the lamination lifting mechanism 320 is disposed at the output end of the lamination translating mechanism 330; alternatively, lamination stage 310 may be provided with an output of lamination translation mechanism 330, with the body of lamination translation mechanism 330 being provided at the output of lamination lift mechanism 320.

Example 3.

In this case, the lamination assembly 300 comprises a plurality of lamination stations 310, the lamination stations 310 being arranged in a line and each being able to receive a series welding unit 10. Lamination device 300 also includes a lamination drive mechanism; the lamination driving mechanism is used to drive the plurality of lamination stages 310 to move in a linear direction. In the present embodiment, the straight direction is an arrangement direction of the plurality of lamination stages 310.

Because the surface of the battery piece 1 is sunken and forms a groove in the position of the grid line, and the welding strip 2 is clamped in the groove, in this embodiment, the lamination stages 310 are adjacent to each other in the straight line direction, so that the second end 2b of the welding strip of one series welding unit 10 gradually stretches into the grid line of the battery piece 1 of the other series welding unit to realize lamination.

It should be noted that, in embodiment 2 and embodiment 3, in order to avoid collision when the lamination platforms 310 are close to each other, when the battery pieces 1 need to be stacked above the second ends 2b of the welding strips, the battery pieces 1 of the series welding unit 10 may be partially protruded from the lamination platforms 310, and it is easy to understand that the protruded portions of the battery pieces 1 are used for connecting the second ends 2b of the welding strips of another series welding unit 10; thus, when the horizontal projections of the battery piece 1 and the second end 2b of the welding strip are overlapped in place, the horizontal projections of the two lamination platforms 310 do not have an overlapped part; continuing to bring the two lamination stages 310 toward each other in the vertical direction, the battery cells 1 of one series welding unit 10 are stacked on the second ends 2b of the weld bands of one series welding unit 10 without the two lamination stages 310 colliding. Further, to ensure the lamination effect, the lamination stage 310 may fully hold the second end 2b of the solder strip; thus, during lamination, the second end 2b of the welding strip cannot drop down, and the battery piece 1 is ensured to accurately press the welding strip 2.

Or when the second ends 2b of the welding strips need to be stacked on the upper surface of the battery piece 1, the second ends 2b of the welding strips of the series welding unit 10 can partially protrude out of the lamination table 310; while lamination stage 310 may fully hold battery sheet 1; in this way, the two lamination stations 310 do not collide when the battery piece 1 contacts the strap second end 2 b.

In summary, the series welding unit 10 can be constructed by supplying the battery piece 1 through the battery piece feeding device 100 and the welding strip 2 through the welding strip feeding device 200; further, lamination of the series welding unit 10 can be achieved by the lamination stage 310 and the lamination driving mechanism, constituting the battery string 20.

The battery piece loading device 100 is used for providing battery pieces 1 to form a series welding unit 10.

To increase the working efficiency, the lamination device 300 includes a plurality of lamination stages 310, and the lamination stages 310 are arranged along a straight line and can respectively receive one series welding unit 10; the battery piece loading device 100 can simultaneously carry a plurality of battery pieces 1 onto each lamination stage 310.

At this time, referring to fig. 9 and 10, the battery piece carrying mechanism 120 may include a plurality of battery piece extracting members 121, the plurality of battery piece extracting members 121 being arranged at the movable end of the battery piece carrying driving member 122 at intervals along a straight line; the battery cell extraction members 121 can be in one-to-one correspondence with the lamination stages 310.

The battery piece conveying mechanism 110 can continuously convey the battery piece 1 to the extraction station corresponding to the battery piece carrying mechanism 120. The battery piece carrying driving member 122 can drive the battery piece extracting member 121 to extract the battery pieces 1 one by one until all the battery piece extracting members 121 obtain the battery pieces 1; or when a plurality of battery pieces 1 are aligned in a straight line on the battery piece conveying mechanism 110, the battery piece conveying driving member 122 can drive the battery piece extracting member 121 to simultaneously extract all the battery pieces 1. Subsequently, the battery piece handling driving member 122 can drive the battery piece extracting member 121 to face the lamination stage 310 so that the battery piece extracting member 121 releases the battery piece 1 on the lamination stage 310.

Further, the battery piece feeding device 100 further includes a detecting member 123, and the working end of the detecting member 123 faces the battery piece conveying mechanism 110, so as to detect the state of the battery piece 1 on the battery piece conveying mechanism 110, so that the battery piece carrying driving member 122 drives the battery piece extracting member 121 to accurately extract and transfer the battery piece 1.

One of the functions of the detecting member 123 is to acquire the position of the battery piece 1; for example, the detecting member 123 may be a photoelectric sensor, and when the battery piece 1 passes through the detecting member 123, the signal of the photoelectric sensor can be blocked, so that the control system can know that the battery piece 1 reaches the position of the detecting member 123; further, the control system can control the battery piece conveying mechanism 110 to stop the station so that the battery piece 1 stays at the current station; further, the control system can control the cell handling driver 122 to drive the cell extracting member 121 to extract the cell 1.

In addition, the position state of the battery piece 1 conveyed by the battery piece conveying mechanism 110 is not uniform. However, in the battery string 20, the plurality of battery pieces 1 constituting the battery string 20 are completely unified in their position states; in short, the grid lines of the battery pieces 1 are in one-to-one correspondence, and the extending directions of the corresponding grid lines are collinear; referring specifically to fig. 6, fig. 6 is a top view of the battery string 20 shown in fig. 5, in which the battery plates are horizontally aligned (i.e., the sides of the battery plate 1 are parallel or perpendicular to the left-right direction), and the grid lines (i.e., the positions of the connection pads 2) are in one-to-one correspondence and extend in the left-right direction.

Therefore, when the battery piece 1 is fed, the position state of the battery piece 1 needs to be corrected, so that the position state of the fed battery piece 1 is uniform and lamination is convenient.

Specifically, the battery piece handling mechanism 120 includes a plurality of battery piece extracting members 121, the battery piece handling driving member 122 may employ a robot, and the detecting member 123 may employ a CCD (Charge-coupled Device) camera.

In one embodiment, the CCD camera photographs and obtains the position status information of the first battery piece 1, and according to the information, the robot controls a battery piece extracting member 121 to approach the battery piece conveying mechanism 110 to extract the battery piece 1; the CCD camera shoots and obtains the position state information of the second battery piece 1, according to the information, the robot controls the battery piece extracting piece 121 to rotate in the horizontal plane until the state of the extracted first battery piece 1 is consistent with that of the second battery piece 1, and then the robot controls the other battery piece extracting piece 121 to be close to the battery piece conveying mechanism 110 and extract the second battery piece 1; the CCD camera shoots and obtains the position state information of the third battery piece 1, according to the information, the robot controls the battery piece extracting pieces 121 to rotate in the horizontal plane until the state of the extracted first battery piece 1 and the state of the extracted second battery piece 1 are consistent with the state of the extracted third battery piece 1, then the robot controls the other battery piece extracting piece 121 to be close to the battery piece conveying mechanism 110 and extracts the third battery piece 1 … …, and the plurality of battery piece extracting pieces 121 are fetched after the position state is adjusted one by one; finally, the states of the battery cells 1 extracted by the plurality of battery cell extraction members 121 are unified.

In yet another embodiment, the battery piece conveying mechanism 110 firstly conveys the plurality of battery pieces 1 to the corresponding working stations of the battery piece conveying mechanism 120; subsequently, position state information of all the battery pieces 1 is obtained through a CCD camera; next, the robot controls the battery piece extracting member 121 to approach the battery piece conveying mechanism 110 and take out the plurality of battery pieces 1; the robot then controls the cell extraction 121 to move over the lamination station 310; in the process of lowering the battery pieces 1, the robot firstly controls the battery piece extracting piece 121 to horizontally rotate according to the initial state of the first battery piece 1 until the first battery piece 1 is adjusted to a state required by lamination; releasing the first battery piece 1 onto the lamination station 310; then, according to the initial state of the second battery piece 1, the robot controls the battery piece extracting member 121 to horizontally rotate until the second battery piece 1 is adjusted to a state required by lamination; then releasing the second cell 1 … …, so that the cell 1 is adjusted and released one by one; finally, the position states of the battery pieces 1 on each lamination stage 310 are uniform and meet lamination requirements.

In order to avoid that the robot drives the battery piece extracting members 121 to take pieces one by one or to discharge pieces one by one, the plurality of battery piece extracting members 121 are lifted synchronously and interfere with each other, the battery piece carrying mechanism 120 further comprises battery piece discharging driving members 124, and the battery piece discharging driving members 124 are in one-to-one correspondence with the battery piece extracting members 121, so that the corresponding battery piece extracting members 121 can be driven to lift independently.

Referring to fig. 10, at this time, the battery piece carrying driving member 122 is mainly used to synchronously drive all the battery piece extracting members 121 to transfer the battery pieces 1, and the battery piece lowering driving member 124 can drive the corresponding battery piece extracting members 121 to lower to extract or release the battery pieces 1, or raise the avoidance battery piece conveying mechanism 110 or the lamination device 300 as required. By providing the battery piece lowering driving member 124, it is possible to allow only a preset one of the battery piece extracting members 121 to descend, extract the battery piece 1 from the battery piece conveying mechanism 110, or to allow only a preset one of the battery piece extracting members 121 to descend, release the battery piece 1 to the corresponding lamination stage 310; thereby preventing other battery tab extractors 121 from contacting battery tab transport mechanism 110 or lamination apparatus 300.

For the solder ribbon feeding device 200, it is used to provide the solder ribbon 2. To facilitate continuous operation of the apparatus, the ribbon feeder 200 may prepare the finished ribbon 2 and then carry the finished ribbon 2 to the build station of the series welding unit 10.

In one embodiment, the solder strip feeding device 200 includes: a solder strip unreeling mechanism 210 for releasing the solder strip; the welding strip cutting mechanism 220 is arranged at the downstream of the welding strip unreeling mechanism 210 and can cut the welding strip material strip; the solder strip pulling mechanism 230 is capable of pulling out solder strip from the solder strip unreeling mechanism 210 and pulling the solder strip through the solder strip cutting mechanism 220 so that the solder strip cutting mechanism 220 cuts the solder strip.

Referring to fig. 11, the solder strip unreeling mechanism 210 includes an unreeling shaft 211 and an unreeling driving member that drives the unreeling shaft 211 to rotate; a coil material formed by a solder strip (hereinafter referred to as a strip) is sleeved on the unreeling shaft 211, and the unreeling driving member drives the unreeling shaft 211 to rotate, so that the strip can be released. The welding strip traction mechanism 230 pulls the free end of the material strip, and then moves downstream to gradually pull the material strip; the pulled-out material tape passes through the solder tape cutting mechanism 220; after the preset length is pulled out, the welding strip cutting mechanism 220 cuts the material strip, and the cut welding strip material section, namely the required finished welding strip 2 is cut.

Wherein, the unwinding shaft 211 can be an inflatable shaft; the unwind drive may employ a servo motor. The welding strip cutting mechanism 220 may adopt a cutter, and the cutter can move towards the material strip under the drive of a cutter driving piece (adopting a driving member such as an air cylinder or an electric cylinder) so as to cut the material strip. The solder strip drawing mechanism 230 includes a drawing member (an extraction member such as a clamping jaw or a suction cup) capable of extracting a free end of a material strip and capable of moving downstream and drawing out the material strip under the drive of a drawing driving member (a driving member such as an electric cylinder or a linear module).

It should be added that, when a plurality of solder strips 2 need to be laid on one battery piece 1, the solder strip unreeling mechanism 210 may include a plurality of unreeling shafts 211 for releasing one solder strip 2 respectively, so as to meet the use requirement.

Further, when the lamination mechanism 300 includes a plurality of lamination stages 300 and simultaneously stacks a plurality of series welding units 10, the tape feeding device 200 needs to supply a plurality of sets of the tapes 2 (the plurality of tapes 2 laid on one battery piece 1 are referred to as "one set of tapes"). For this purpose, the solder strip feeding device 200 includes a set of solder strip unreeling mechanism 210, a set of solder strip traction mechanism 230, and a plurality of sets of solder strip cutting mechanism 220; a plurality of sets of ribbon cutting mechanisms 220 are arranged in a line and spaced downstream of ribbon unwind mechanism 210.

Referring to fig. 12, the material tape fed out by the tape feeding mechanism 210 is drawn through the tape cutting mechanisms 220 in sequence via the tape drawing mechanism 230. It is easily conceivable that the pitch of the adjacent two sets of the solder-ribbon cutting mechanisms 220, i.e., the length of the finished solder ribbon 2. After the material tape with the preset length is pulled out, the tape cutting mechanism 220 can cut the pulled-out strip material tape into multiple sections, so as to obtain multiple groups of finished product solder tapes 2.

Further, the solder strip feeding device 200 further includes a solder strip lifting mechanism 260 connected to the solder strip cutting mechanism 220 and capable of driving the solder strip cutting mechanism 220 to move in the vertical direction; wherein, any welding strip cutting mechanism 220 can move along the vertical direction under the drive of the welding strip lifting mechanism 260; or a group of solder strip cutting mechanisms 220 through which the solder strip material strip passes first are relatively fixedly arranged along the vertical direction.

By providing the solder strip lifting mechanism 260, before the solder strip traction mechanism 230 draws the solder strip, the solder strip lifting mechanism 260 can drive the solder strip cutting mechanism 220 to descend or ascend to be far away from the traction path of the solder strip traction mechanism 230, so that the solder strip cutting mechanism 220 is prevented from interfering with the solder strip traction mechanism 230. After the welding strip traction mechanism 230 pulls the welding strip material strip to pass through the welding strip cutting mechanism 220, the welding strip lifting mechanism 260 drives the welding strip cutting mechanism 220 to be close to the welding strip material strip, so that the welding strip cutting mechanism 220 works.

The solder strip lifting mechanism 260 may adopt a driving member such as an electric cylinder or a linear module.

Further, after the finished solder strips 2 are prepared, the solder strips 2 need to be transported to be laid with the battery pieces 1 into a series welding unit 10. In order to increase the carrying efficiency of the finished solder ribbon 2, referring to fig. 12, the solder ribbon pulling mechanism 230 includes: a pre-draw assembly 231 for drawing the solder strip from the solder strip unreeling mechanism 210; after the tape pulling assembly 232 and the tape cutting mechanism 220 cut the material tape, the tape pulling assembly 232 can pull the cut solder tape 2 from the tape cutting mechanism 220. The material strip discharged by the strip unreeling mechanism 210 is pulled through the strip cutting mechanism 220 via the pre-pulling assembly 231; after the material strip with the preset length is pulled out, the pre-traction component 231 can return to the welding strip unreeling mechanism 210 to prepare for the next traction; and the solder ribbon 2 cut by the solder ribbon cutting mechanism 220 is pulled downstream via the ribbon pulling assembly 232.

It is readily understood that by independent action of the pre-draw assembly 231 and the strap draw assembly 232, the strap draw assembly 2320 carries the finished strap 2 after the finished strap 2 is prepared, and the pre-draw assembly 231 can start the strap draw of the next round, thereby accelerating the preparation efficiency of the strap 2.

Wherein the pre-traction assembly 231 and/or the belt traction assembly 232 comprises: a traction member (an extraction member such as a clamping jaw or a sucking disc is adopted) for extracting the free end of the material belt or the welding belt 2; and the traction driving piece (adopting a driving component such as an electric cylinder or a linear module) is connected with the traction piece and can drive the traction piece to move along the linear direction.

The solder ribbon cutting mechanism 220 includes: a first cutter mold 221, wherein a plurality of blades are arranged on the first cutter mold 221 at intervals along the second direction; the second cutting die 222, on which a plurality of blades are arranged at intervals along the second direction, the second cutting die 222; the cutting driving assembly 223 can drive the first cutter die 221 and the second cutter die 222 to relatively move along the second direction; wherein, the blades on the first cutter mould 221 are in one-to-one correspondence with the blades on the second cutter mould 222; the welding strip material belt passes through the space between the two corresponding blades; the first die 221 and the second die 222 move toward each other, and can cut a plurality of solder tape material tapes at the same time.

By driving the blade in the second direction to sever the strip, the blade is prevented from moving in the vertical direction, interfering with the action of the strip-welding traction mechanism 230; the footprint of the ribbon cutting mechanism 220 can also be reduced.

Further, in any series welding unit 10, the first end 2a of the welding strip is lapped on the battery piece 1, and the second end 2b protrudes from the battery piece 1; since the battery piece 1 has a certain thickness, if the welding strip 2 is naturally laid on the battery piece 1, the protruding portion thereof may be suspended, thereby affecting lamination of the two series welding units 10. Therefore, the solder strip feeding device 200 further includes a solder strip bending mechanism 240, which is disposed downstream of the solder strip unreeling mechanism 210, and is capable of bending the solder strip 2 so that the extending directions of the first end 2a and the second end 2b of the solder strip are not collinear any more.

The bent solder strip 2 may refer to fig. 1, 4 or 7, a step is formed between the first end 2a and the second end 2b of the solder strip 2, where the higher end is connected to the upper surface of the battery piece 1, and the lower end is connected to the lower surface of the other battery piece 1.

Referring to fig. 11, the solder ribbon bending mechanism 240 includes: the first bending block 241 and the second bending block 242 are oppositely arranged along the vertical direction, and the material belt passes through the space between the first bending block 241 and the second bending block 242; one surface part of the first bending block 241 facing the second bending block 242 is protruded, and one surface part of the second bending block 242 facing the first bending block 241 is recessed; the bending driving assembly 243 can drive the first bending block 241 and the second bending block 242 to move relatively. When bending is required, the bending driving assembly 243 drives the first bending block 241 and the second bending block 242 to move in opposite directions, and the protruding portion of the first bending block 241 can sink into the concave portion of the second bending block 242, so as to press and bend the material strip therein.

Referring to fig. 11, a plurality of sets of ribbon bending mechanisms 240 are provided downstream of the ribbon unwind mechanism 210 and upstream of the ribbon cutting mechanism 220; the welding strip traction mechanism 230 draws the material strips from the welding strip unreeling mechanism 210, sequentially passes through each welding strip bending mechanism 240 and then sequentially passes through the plurality of groups of welding strip cutting mechanisms 220; thus, a strip of material can be folded into a plurality of spaced bends; when a new round of welding strip 2 is prepared, the welding strip traction mechanism 230 lifts the free end of the material strip and pulls the material strip along the straight line direction, and the material strip part with a plurality of bends in the previous round of preparation process is pulled into the welding strip cutting mechanism 220, so that the welding strip cutting mechanism 220 cuts down a plurality of material segments with bends.

Further, the solder strip bending mechanism 240 applies pressure to the material strip that can cause the material strip to deform; to prevent the solder strip bending mechanism 240 from bending the solder strip, the solder strip unreeling mechanism 210 pulls out the solder strip that is not actively released, resulting in deformation or displacement of the solder strip, and the solder strip feeding device 200 further includes: a front pressing component 291, which is arranged at the downstream of the welding strip bending mechanism 240 and can press the welding strip passing through the welding strip bending mechanism 240; the rear pressing assembly 292 is arranged at the upstream of the welding strip bending mechanism 240 and can press the welding strip material strip entering the welding strip bending mechanism 240; the front and rear press assemblies 291, 292 are capable of compressing the ribbon strip protruding from the ribbon bending mechanism 240.

Specifically, before the material strip to be bent enters the welding strip bending mechanism 240, the material strip passes through the front pressing component 291, and after passing through the welding strip bending mechanism 240, the material strip also passes through the rear pressing component 292; after the material strip is pulled out by a preset length, before bending, the material strip is pressed by the front pressing component 291 and the rear pressing component 292, so that the material strip is in a controlled stable state, and the welding strip bending mechanism 240 can conveniently and accurately act on the material strip.

Wherein, the front press assembly 291 and/or the rear press assembly 292 comprise a first press block 2911 and a second press block 2912 which are oppositely arranged along the vertical direction, and a press block driving piece 2913 (adopting a cylinder and an electric cylinder energy driving member) which can drive the first press block 2911 and the second press block 2912 to move relatively; the material belt passes through the space between the two pressing blocks, and before bending, the pressing block driving piece 2913 drives the first pressing block 2911 and the second pressing block 2912 to move in opposite directions to press the material belt; when a new round of welding strip 2 is prepared, the press block driving member 2913 drives the first press block 2911 and the second press block 2912 to move oppositely, so that the strip is loosened, and the strip traction mechanism 230 is used for traction of the strip to move downstream.

Still further, the solder strip bending mechanism 240 further includes a strip pressing moving component 293 connected to the front pressing component 291 and/or the rear pressing component 292 and capable of driving the front pressing component 291 and/or the rear pressing component 292 to move in a linear direction; after the front pressing component 291 and the rear pressing component 292 compress the material strips at two ends of the welding strip bending mechanism 240, the pressing strip moving component 293 can drive the front pressing component 291 to move downstream, and/or the pressing strip moving component 293 can drive the rear pressing component 292 to move upstream, so that the welding strip material strips compressed by the front pressing component 291 and the rear pressing component 292 can be tightened, and the stability of the material strips is further ensured.

In addition, the solder strip traction mechanism 230 will draw the solder strip through the solder strip cutting mechanism 220, and the part of the solder strip passing through the solder strip cutting mechanism 220 will be cut off to become the finished solder strip 2; to avoid the unstable position of the protruding strip, the strip feeding device 200 further includes a strip guiding mechanism 250 disposed downstream of the strip cutting mechanism 220; the ribbon guide mechanism 250 includes: the guide plate 251, the guide plate 251 is provided with a guide groove arranged along the extension direction of the material belt, and the welding belt material belt passes through the guide groove.

It is easy to think that the "tape extending direction" is the arrangement direction of the plurality of tape cutting mechanisms 220 at this time. Referring to fig. 11 and 12, the tape guide 250 is disposed adjacent to the tape cutting mechanism 220, and by stably supporting the tape, it is possible to ensure that the tape cutting mechanism 220 cuts the tape accurately. At the same time, the material strip falls into the guide groove, which can define the position and the extending direction of the welding strip. In addition, the cut welding strip 2 is supported in the guide plate 251, so that the subsequent traction can be facilitated. Further, the guide plate 251 is provided with a plurality of guide grooves arranged at intervals, so that each welding strip can be independently received, and the mutual interference of a plurality of welding strips is avoided.

The ribbon guide mechanism 250 further includes: the front clamp 252 is arranged at the front end of the guide plate 251 and can clamp the solder strip material belt at the front end of the guide groove; the rear clamp 253 is arranged at the rear end of the guide plate 251 and can clamp the welding strip material belt at the rear end of the guide groove.

The front clamp 252 and the rear clamp 253 are matched, two ends of a material belt in the guide groove can be clamped, and the position stability of the material belt is further ensured, so that the material belt is convenient to cut. After finishing cutting, the material strips in the guide grooves are cut off to form finished welding strips 2; before loading the finished solder strip 2 into the lamination device 300, the front clamp 252 may first unclamp the front end of the solder strip 2 to facilitate the solder strip 2 being pulled by a solder strip handling mechanism (e.g., the strip pulling assembly 232 described above). At this time, since the rear end of the solder ribbon 2 is still clamped by the rear clamp 253, the solder ribbon 2 is not easily displaced; subsequently, the rear jig 253 releases the solder ribbon 2, and the solder ribbon 2 can be removed by the solder ribbon handling mechanism.

When the welding strip feeding device 200 comprises a plurality of groups of welding strip cutting mechanisms 220, the welding strip feeding device 200 further comprises a plurality of groups of welding strip guiding mechanisms 250, the welding strip guiding mechanisms 250 are in one-to-one correspondence with the welding strip cutting mechanisms 220, and any welding strip guiding mechanism 250 is arranged at the downstream of the corresponding welding strip cutting mechanism 220 so as to stabilize the position of a material strip before cutting and facilitate the welding strip conveying mechanism to convey the welding strip 2 after cutting.

Further, when the solder strip feeding device 200 includes a plurality of sets of solder strip guiding mechanisms 250, in order to avoid the solder strip guiding mechanisms 250 interfering with the solder strip traction mechanisms 230 to draw the solder strip, the solder strip feeding device 200 further includes a guiding lifting mechanism 270, which is connected with the solder strip guiding mechanisms 250 and can drive the solder strip guiding mechanisms 250 to move along the vertical direction.

Referring to fig. 11, by providing the guide elevating mechanism 270, the solder ribbon guide mechanism 250 can be lowered away from the moving path of the material ribbon and avoid the solder ribbon pulling mechanism 230 when the solder ribbon pulling mechanism 230 pulls the material ribbon; the to-be-welded strip traction mechanism 230 pulls the strip to pass through the strip welding guide mechanism 250, and the guide lifting mechanism 270 can drive the strip welding guide mechanism 250 to lift so that the guide plate 251 approaches to the strip entering the guide groove.

The guide lifting mechanism 270 may be a driving member such as an electric cylinder or a linear module.

Further, when preparing a plurality of the solder strips 2, the finished solder strips 2 just cut are adjacent to each other; however, when constructing a plurality of series welded units 10, the series welded units 10 are spaced apart from each other for convenience of subsequent lamination. For this purpose, it is necessary to separate the adjacent plurality of bonding tapes 2. For this purpose, the solder strip feeding device 200 further comprises a guide translation assembly 280, which is connected to the solder strip guiding mechanism 250 and is capable of driving the solder strip guiding mechanism 250 to move along the extending direction of the solder strip. It should be noted that, the "extending direction of the tape" is also the arrangement direction of the plurality of sets of tape cutting mechanisms 220.

It will be readily appreciated that the singulated solder ribbons 2 are clamped in the ribbon guide mechanism 250 and that each ribbon guide mechanism 250 can be "pulled apart" by the guide translation assembly 280 such that the solder ribbons 2 thereon are moved to a spaced apart relationship. At this time, the tape conveying mechanism (for example, the plurality of tape pulling units 232 arranged along a line) can simultaneously pick up all the tapes 2 and convey them to the corresponding lamination stage 310.

The guide translation assembly 280 may be a cylinder, a linear module, or a driven member.

Continuing to supplement the lamination device 300, in the above-described embodiment 2, the lamination device 300 includes a plurality of lamination stages 310, a lamination lifting mechanism 320, and a lamination translation mechanism 330; the lamination stages 310 are used for receiving the series welding units 10, two adjacent lamination stages 310 are lifted to different heights by the lamination lifting mechanism 320, the lamination stages 310 are moved to be close to each other along the linear direction by the lamination translation mechanism 330 until the horizontal projection parts of the series welding units 10 on the lamination stages are overlapped, and then the lamination lifting mechanism 320 moves the lamination stages 310 to be close to each other along the height direction, so that the series welding units 10 are overlapped.

At this time, the plurality of series welding units 10 are stacked together to form the battery string 20 or the lamination assembly, and in order to empty the lamination table 310 and facilitate the next lamination, the assembly (the battery string 20 or the lamination assembly) after lamination needs to be transferred, and the following two ways of transferring the assembly after lamination are introduced:

example 4.

Combine example 1 and example 2, or combine example 1 and example 3; for example, when the lamination device 300 includes a plurality of lamination platforms 310, a lamination lifting mechanism 320, a lamination translation mechanism 330, a lamination handling assembly, and a lamination transfer platform, the lamination lifting mechanism 320 and the lamination translation mechanism 330 cooperate to complete lamination of the plurality of series welding units 10 on the lamination platforms 310 to form the lamination assembly; then, the laminated sheet carrying assembly takes away the laminated sheet assembly and carries the laminated sheet assembly to a laminated sheet transfer platform; after the lamination table 310 is empty, the lamination lifting mechanism 320 and the lamination translation mechanism 330 are matched, so that the lamination table 310 returns to the initial position, and a new round of series welding unit 10 is convenient to construct and laminate; after stacking out the second lamination assembly, the lamination handling assembly moves the second lamination assembly onto the lamination transfer platform and causes the second lamination assembly to be stacked on the second end 2b of the blank solder strip of the first lamination assembly … … to finally form the battery string 20 on the lamination transfer platform.

Example 5.

The lamination apparatus 300 further includes a lamination transfer mechanism 340, disposed on one side of the lamination stage 310, capable of receiving the laminated series welding unit 10 and capable of transporting the series welding unit 10 downstream.

The lamination conveyor 340 may employ a conveyor belt assembly, a conveyor platform, a conveyor roller assembly, etc. that enable the transport of articles; in this embodiment, the lamination transfer mechanism 340 is equivalent to integrating the lamination handling assembly and the lamination transfer platform. For example, referring to fig. 16, the lamination transfer mechanism 340 employs a conveyor belt assembly, the series welding unit 10 completes lamination with the cooperation of the lamination stage 310, the lamination lifting mechanism 320, and the lamination translation mechanism 330, and then the lamination lifting mechanism 320 drives the lamination stage 310 to descend, the laminated assembly falls onto the surface of the conveyor belt, and the conveyor belt forwards flows, and the laminated assembly is moved out of the lamination stage 310.

In this embodiment, when the series welding unit 10 is built in the lamination apparatus 300, the series welding unit 10 may be built on the lamination table 310 or on the lamination conveying mechanism 340

When the series welding unit 10 is constructed on the lamination table 310, the lamination table 310 is higher than the conveying surface of the lamination conveying mechanism 340 so as to avoid the lamination conveying mechanism 340 interfering with the construction of the series welding unit 10; until the series welding unit 10 completes lamination, the lamination station 310 drops the laminated assembly onto the lamination transport mechanism 340 by lowering.

When the series welding unit 10 is constructed on the lamination conveying mechanism 340, the lamination stage 310 is lower than the conveying surface of the lamination conveying mechanism 340 (i.e., in the non-lamination state, the lamination stage 310 supports the surface of the series welding unit 10 and is not higher than the surface of the lamination conveying mechanism 340 supports the series welding unit 10); the construction of the series welding units 10 is completed, and a plurality of series welding units 10 to be laminated are arranged on the laminated conveying mechanism 340 at intervals; before lamination, the lamination table 310 is in one-to-one correspondence with the series welding units 10 on the lamination conveying mechanism 340; when lamination is carried out, the lamination lifting mechanism 320 drives the lamination table 310 to ascend, penetrate through the lamination conveying mechanism 340 and jack up the corresponding series welding unit 10; the lamination is completed and the lamination lifting mechanism 320 drives the lamination table 310 to descend again so that the laminated assembly falls onto the lamination conveying mechanism 340 and the laminated assembly is transferred by the lamination conveying mechanism 340.

Further, when the plurality of series welding units 10 are stacked to form the lamination assembly, the lamination assembly of a new round can be directly constructed on the second end 2b of the blank welding belt of the lamination assembly of a previous round through intermittent action of the lamination conveying mechanism 340. Specifically, the lamination assembly falls onto the lamination transport mechanism 340, and the lamination transport mechanism 340 moves forward one station such that the empty second end 2b of the welding strip of the lamination assembly is opposite to the first lamination stage 310 (i.e., the lamination stage 310 corresponding to the first series welding unit 10); thus, if the series welding unit 10 is constructed on the lamination conveying mechanism 340, the battery piece 1 of the new round of the first series welding unit 10 can be directly paved on the empty welding strip second end 2b of the last round of lamination assembly; if the series welding unit 10 is constructed on the lamination table 310, and lamination ends, the battery piece 1 of the first series welding unit 10 can also fall onto the empty second end 2b of the welding strip of the lamination assembly of the previous round along with the descending of the lamination table 310.

To avoid the sheet conveying mechanism 340 interfering with the movement of the lamination stage 310, in one embodiment, a notch extending along the arrangement direction of the lamination stages 310 may be formed on the lamination conveying mechanism 340, and the lamination stage 310 may be able to lift and translate through the notch.

In another embodiment, lamination feed mechanism 340 may include at least two sets of spaced feed members (e.g., two conveyor belts, two sets of feed rollers, etc.), with lamination stage 310 being in a spaced relationship, where the spacing corresponds to the "gap" of the previous embodiment, and lamination stage 310 is capable of being raised and lowered and translated through the spacing.

In yet another embodiment, lamination station 310 includes two edge support stations 311; the two edge support tables 311 are respectively arranged at two sides of the lamination conveying mechanism 340 in the width direction; in the width direction, the series welding unit 10 partially protrudes from the lamination conveying mechanism 340; the two edge support stands 311 are capable of supporting the protruding edge portions of the series welding unit 10.

In this embodiment, two edges of the series welding unit 10 protrude outside the lamination conveying mechanism 340; when stacking, the stacking lifting mechanism 320 drives the two edge support tables 311 to rise and be higher than the surface of the stacking conveying mechanism 340 for receiving the series welding unit 10, so that the series welding unit 10 can be lifted up to realize stacking; after lamination, the lamination lift mechanism 320 drives the two edge support tables 311 down so that the lamination assembly approaches to fall onto the lamination transport mechanism 340.

To better receive the series welding unit 10, the lamination station 310 further comprises an intermediate support station 312 arranged between the two edge support stations 311; the intermediate support table 312 can pass through the lamination transport mechanism 340, bearing the middle of the tandem welding unit 10.

Referring to fig. 16 to 18, the series welding unit 10 can be more preferably lifted by providing the intermediate support base 312 in cooperation with the side support base 311. Further, the lamination stage 310 may include a plurality of intermediate support stages 312, where the intermediate support stages 312 are in a one-to-one correspondence with positions of the bonding tapes 2 of the series welding unit 10, so as to support the bonding tapes 2 of the series welding unit 10, so as to avoid the bonding tapes 2 from being offset due to no support during lifting or translation.

It should be noted that the lamination stage 310 may include only the intermediate support stage 312, and the intermediate support stage 312 supports the middle portion of the battery sheet 1. When the series welding unit 10 does not include the press wire 3, the lamination stage 310 includes both the edge support stage 311 and the middle support stage 312, and the edge support stage 311 and the middle support stage 312 may be used to support the battery sheet 1; or the series welding unit 10 includes the press wire 3, the middle support stand 312 is used to lift the battery piece 1, and the side support stand 311 is used to lift the press wire 3.

The press net 3 is a member laid on the battery sheet 1 and capable of pressing the solder strip 2 against the battery sheet 1. By pressing the mesh 3, the solder strip 2 can be pressed against the battery plate 1, thereby defining the relative positions of the solder strip 2 and the battery plate 1.

Further, the middle support 312 receives the surface of the series welding unit 10 lower than the surface of the side support 311 receives the series welding unit 10.

Referring to fig. 18, the side support stands 311 on both sides are higher than the middle support stand 312 because the mass of the press wire 3 is large, and if the battery sheet 1 is first lifted, the battery sheet 1 may be broken due to the pressing of the press wire 3; for this reason, by providing the higher side support stand 311, when the lamination lifting mechanism 320 drives the lamination stand 310 to rise, the side support stand 311 contacts both sides of the press wire 3 to hold up the press wire 3, and then the middle support stand 312 contacts the battery piece 1 again to hold up the battery piece 1 and the solder strip 2.

Further, by controlling the height difference between the middle support stand 312 and the side support stand 311, it is possible to realize that the side support stand 311 supports the pressing net 3, and when the pressing net 3 is not completely separated from the battery piece 1 and the welding strip 2, the middle support stand 312 supports the battery piece 1 and the welding strip 2, thereby maintaining the pressing of the pressing net 3 to the battery piece 1 and the welding strip 2.

To facilitate lifting and translation of the intermediate support table 312, in combination with the above, a notch extending in a straight line direction may be formed in the lamination conveying mechanism 340, or a gap may be used as a notch by at least two sets of conveying members disposed at intervals. At this time, it should be noted that the solder strips 2 laid on the battery sheet 1 need to avoid the notch.

For example, the welding strip 2 of the series welding unit 10 may be lapped on the lamination conveying mechanism 340, and when the lamination table 310 rises and jacks up the series welding unit 10, the welding strip 2 may not be completely separated from the lamination conveying mechanism 340, so that the lamination conveying mechanism 340 has a certain bearing force on the welding strip 2, and separation of the welding strip 2 from the battery piece 1 can be avoided.

For another example, the intermediate support table 312 can lift up the portion of the string welding unit 10 where the solder ribbon 2 is laid, thereby preventing the solder ribbon 2 from being separated from the battery cell 1.

Also for example, lamination apparatus 300 further includes a base 350, where a notch 351 extending in a straight direction is formed on base 350, and lamination stage 310 is capable of moving through notch 351.

Lamination device 300 may be provided with lamination transport mechanism 340 and base 350 at the same time, where the upper surface of base 350 is coplanar with the receiving surface of lamination transport mechanism 340 and receives series welding unit 10 together; specifically, the surface of the base 350 may be provided with a plurality of recessed grooves 353 for placement of the transport members of the lamination transport mechanism 340. For example, when the lamination transport mechanism 340 employs a conveyor belt, the conveyor belt can be disposed in the recess 353; the invagination slots 353 can provide guiding and positioning to facilitate stable belt circulation.

For example, the lamination conveyor 340 includes a plurality of conveyor belts arranged at intervals, referring to fig. 16 and 19, in order to avoid slippage or mutual influence of the conveyor belts, the distance between adjacent conveyor belts is large, and for this purpose, a base 350 is provided; the notch 351 on the base 350 may be correspondingly configured to the width of the intermediate support table 312; in this way, the notch 351 does not interfere with the strap 2 by too much while satisfying the movement of the intermediate support table 312. In short, the base 350 can compensate for the gap or clearance of the lamination stack conveyor 340, thereby preventing the solder strip 2 from being detached.

Of course, the lamination device 300 may be provided with only the base 350, in which case the base 350 may be used for the construction of the series welding unit 10 or for receiving a platform; when stacking, the stacking lifting mechanism 320 drives the stacking table 310 to ascend, and penetrates through the notch 351 to jack up the series welding unit 10; after lamination, lamination lifting mechanism 320 drives lamination stage 310 to descend so that the lamination assembly falls on the surface of base 350; and the carrying is convenient.

Further, the base 350 is further provided with a solder groove 352 extending in a straight line direction; the solder ribbon 2 constituting the series soldering unit 10 can fall into the solder ribbon groove 352. Referring specifically to the embodiment shown in fig. 19, nine solder strips 2 are laid on one battery piece 1; correspondingly, nine solder grooves 352 are formed on the base 350; the nine solder grooves 352 are spaced apart and arranged side by side; when the series welding unit 10 is positioned on the base 350, the battery piece 1 is mounted on the surface of the base 350, and the welding strip 2 falls on the welding strip groove 352. By providing the solder grooves 352, the positions of the solder strips 2 can be defined, and thus, when the lamination stage 310 performs the lamination operation, the solder strips 2 can be prevented from being deviated. Specifically, when the lamination stage 310 jacks up the series welding unit 10, the second end 2b of the welding strip protruding from the series welding unit 10 is not suspended, and the tail part of the welding strip still is positioned in the welding strip groove 352, so that the accuracy of the position of the welding strip 2 is ensured.

When a plurality of lamination platforms 310 are lifted and translated to realize lamination, one lamination platform 310 can be fixed; therefore, either the base 350 or the lamination feed mechanism 340 may be provided to act as a stationary lamination stage 310. However, since the series welding unit 10 is located on the upper surface of the base 350 or the lamination transfer mechanism 340, when the base 350 or the lamination transfer mechanism 340 can only serve as a lamination, the lowest lamination stage 310 is located so that the series welding unit 10 lifted up by the other lamination stage 310 is stacked thereon. For example, referring to fig. 16, when constructing the series welding unit 10, the first series welding unit 10 is directly constructed on the right side of the base 350; when lamination is carried out, the left lamination table 310 is lifted to be gradually reduced from left to right, and then moves to the right until the horizontal projection part of the series welding unit 10 is overlapped; thus, the first series welding unit 10 is constructed on the base 350, and the first series welding unit 10 does not perform lifting or translational movement in the lamination process, and waits for the series welding unit 10 on the left to be stacked.

In addition, the lamination stage 310 is required to drive the series welding unit 10 to lift and translate, in order to avoid the displacement of the series welding unit 10 on the lamination stage 310, the lamination stage 310 is provided with an air hole 313, and the air hole 313 is communicated with negative pressure suction equipment; the negative pressure suction device can suck air from the air hole 313, so that negative pressure is formed inside the air hole 313, and the series welding unit 10 positioned on the lamination table 310 is adsorbed.

Thus, when the lamination lifting mechanism 320 drives the lamination table 310 to lift and contact the series welding unit 10, the negative pressure suction device can suck air from the air hole 313, so that the air hole 313 sucks the series welding unit 10.

It should be noted that, in the description, reference is made to "linear direction" for the plural times, and in each embodiment, "linear direction" represents a direction defined by each of them, but in a specific embodiment, these "linear directions" may be the same. For example, referring to fig. 9, at this time, the drawing direction of the material tape, the conveying direction of the battery sheet 1, and the lamination direction of the series welding unit 10 are all right and left directions. By such a co-directional arrangement, the construction, lamination and welding of the series welding unit 10 can be simplified, the spatial layout of the apparatus can be optimized, and the working efficiency can be improved.

Claims

1. A lamination device (300), characterized by comprising:

A plurality of lamination platforms (310), wherein a plurality of lamination platforms (310) are arranged along a straight line and can respectively receive a series welding unit (10);

A lamination lifting mechanism (320) connected with the lamination table (310) and capable of driving the lamination table (310) to move in the vertical direction;

Wherein any lamination table (310) can move in the vertical direction under the drive of the lamination lifting mechanism (320); or one of the lamination platforms (310) is relatively fixedly arranged along the vertical direction;

a lamination translation mechanism (330) connected with the lamination table (310) and capable of driving the lamination table (310) to move along a linear direction;

Wherein any lamination stage (310) is capable of moving in the linear direction under the drive of the lamination translation mechanism (330); or one of the lamination platforms (310) is relatively fixedly arranged along the straight line direction;

The series welding unit (10) is formed by paving a battery piece (1) and a welding strip (2); in any series welding unit (10), a first end (2 a) of a welding strip (2) is positioned on a battery piece (1), and a second end (2 b) of the welding strip protrudes out of the battery piece (1);

So that any two adjacent lamination platforms (310) are arranged, wherein a battery piece (1) on one lamination platform (310) is opposite to a second end (2 b) of a welding strip on the other lamination platform (310); the lamination platforms (310) can move along the vertical direction and the straight direction through the lamination lifting mechanism (320) and the lamination translation mechanism (330) so as to facilitate adjacent two lamination platforms (310), wherein the battery piece (1) on one lamination platform (310) is stacked on the second end (2 b) of the welding strip on the other lamination platform (310);

the straight direction is an arrangement direction of the plurality of lamination stages (310).

2. The lamination device (300) according to claim 1, further comprising a lamination transfer mechanism (340) disposed on one side of the lamination table (310) and configured to receive the post-lamination series welding unit (10) and to convey the series welding unit (10) downstream.

3. The lamination device (300) according to claim 2, characterized in that a plurality of series welding units (10) to be laminated are arranged at intervals on the lamination transport mechanism (340);

in a non-lamination state, the surface of the lamination table (310) supporting the series welding unit (10) is not higher than the surface of the lamination conveying mechanism (340) supporting the series welding unit (10);

Before lamination, the lamination platforms (310) are in one-to-one correspondence with the series welding units (10) on the lamination conveying mechanism (340);

and when the lamination is carried out, the lamination lifting mechanism (320) drives the lamination table (310) to ascend, penetrate through the lamination conveying mechanism (340) and jack up the corresponding series welding unit (10).

4. The lamination device (300) according to claim 2, characterized in that the lamination station (310) comprises two edge support stations (311); the two edge support tables (311) are respectively arranged at two sides of the lamination conveying mechanism (340) in the width direction;

The series welding unit (10) partially protrudes from the lamination conveying mechanism (340) along the width direction; the two edge support tables (311) can support protruding edge parts of the series welding unit (10).

5. The lamination device (300) according to claim 4, characterized in that the lamination station (310) further comprises an intermediate support station (312) arranged between two of the edge support stations (311);

The middle supporting table (312) can penetrate through the lamination conveying mechanism (340) and bear the middle part of the series welding unit (10).

6. The lamination device (300) according to claim 5, characterized in that the intermediate support (312) receives the surface of the series welding unit (10) lower than the surface of the edge support (311) receiving the series welding unit (10).

7. The lamination device (300) according to any one of claims 1 to 6, wherein an air hole (313) is formed on the lamination table (310), and the air hole (313) is communicated with a negative pressure suction device;

The negative pressure suction device can suck air from the air hole (313) so that negative pressure is formed inside the air hole (313), and then the series welding unit (10) positioned on the lamination table (310) is adsorbed.

8. The lamination device (300) according to any one of claims 1-6, further comprising a base (350), wherein the base (350) is provided with a notch (351) extending in the linear direction, and wherein the lamination table (310) is movable through the notch (351).

9. The lamination device (300) according to claim 8, characterized in that the base (350) is further provided with a weld groove (352) extending in the linear direction;

The solder strip grooves (352) can accommodate solder strips (2) of a series welding unit (10), thereby limiting the positions of the solder strips (2) and avoiding the solder strips (2) from shifting in the lamination process.

10. A battery string preparation device, characterized by comprising a lamination device (300) according to any one of claims 1-9, further comprising:

A battery piece feeding device (100) which is arranged at the upstream of the lamination device (300) and can supply battery pieces (1) to the lamination device (300);

A solder strip feeding device (200) which is arranged at the upstream of the lamination device (300) and can supply solder strips (2) to the lamination device (300);

A plurality of series welded units (10) laminated to form a battery string (20); in the battery string (20), any two adjacent series welding units (10), wherein the battery piece (1) of one series welding unit (10) is overlapped on the second end (2 b) of the welding strip of the other series welding unit (10).