CN117117039A

CN117117039A - Battery string preparation method and battery string preparation equipment

Info

Publication number: CN117117039A
Application number: CN202311214631.9A
Authority: CN
Inventors: 张凯; 刘权辉; 张开旺; 卢俊雄; 徐希翔
Original assignee: Longi Green Energy Technology Co Ltd
Current assignee: Longi Green Energy Technology Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2023-11-24

Abstract

The embodiment of the application provides a battery string preparation method and battery string preparation equipment. The preparation method of the battery string specifically comprises the following steps: the preparation method of the battery string comprises the following steps: n battery pieces are equidistantly arranged along a horizontal first direction, wherein N is an integer greater than or equal to 2; arranging N battery pieces at equal intervals along the vertical direction; acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction; driving the welding strips and the battery pieces to alternately descend along the vertical direction so as to enable the battery pieces and the welding strips to be stacked to form an initial battery string; and performing welding operation on the initial battery string to obtain the battery string. The preparation process of the battery string can improve the preparation efficiency of the battery string.

Description

Battery string preparation method and battery string preparation equipment

Technical Field

The application belongs to the field of photovoltaic processing, and particularly relates to a battery string preparation method and battery string preparation equipment.

Background

In the production process of the photovoltaic cell assembly, there is a process of connecting the battery sheets into a battery string using a slave battery string preparing apparatus. The battery strings are stacked and welded together by the battery pieces and the welding strips according to a preset sequence. Wherein one side of the battery piece is a positive electrode, and the other side is a negative electrode. One end of the welding strip is welded on the front surface of the battery piece, and the other end of the welding strip is welded on the back surface of the next battery piece, so that the welding strip and the battery piece are welded alternately in sequence to form a battery string. Typically, the battery plates and the solder strips need to be stacked prior to welding to form the battery string.

In the prior art, the welding strip and the welding strip are stacked in sequence on the conveying device by conveying the welding strip to the conveying device through the welding strip conveying device and conveying the welding strip through the battery strip conveying device. Because a battery piece and a welding belt are carried each time and stacked in sequence, the stacking mode has lower efficiency and seriously affects the preparation efficiency of the battery string.

Disclosure of Invention

The application aims to provide a battery string preparation method and battery string preparation equipment, which are used for solving the problem of low battery string preparation efficiency.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, the application discloses a battery string preparation method, which comprises the following steps:

n battery pieces are equidistantly arranged along a horizontal first direction, wherein N is an integer greater than or equal to 2;

arranging N battery pieces at equal intervals along the vertical direction;

acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction;

driving the welding strips and the battery pieces to alternately descend along the vertical direction so as to enable the battery pieces and the welding strips to be stacked to form an initial battery string;

and performing welding operation on the initial battery string to obtain the battery string.

Optionally, the step of disposing N battery pieces at equal intervals along a vertical direction includes: comprising the following steps:

carrying N battery pieces to the upper part of a stacking platform, and keeping the distance between adjacent battery pieces along the first horizontal direction unchanged;

and driving the plurality of battery pieces to move along the vertical direction, so that the plurality of battery pieces are arranged at equal intervals in a step shape along the vertical direction.

Optionally, the step of acquiring n+1 solder strips and driving the solder strips to move so that each battery piece is located between two adjacent solder strips and a welded portion of the battery piece to realize the cross arrangement of the battery piece and the solder strips in the vertical direction comprises

Carrying N+1 welding strips to the upper part of the stacking platform, wherein the N+1 welding strips are distributed at equal intervals above the stacking platform along the horizontal first direction;

and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction.

Optionally, the step of driving the solder strips to move so that each battery piece is located between two adjacent solder strips and a welding part of the battery piece to realize the cross arrangement of the battery piece and the solder strips in the vertical direction includes:

driving the N+1 welding strips to move along the vertical direction, so that the N+1 battery pieces are distributed at intervals in a step shape along the vertical direction, and the height of one welding strip is positioned between two adjacent battery pieces along the vertical direction;

Driving N+1 welding strips to gather along the first direction;

and driving the N+1 welding strips after gathering to move along the first direction so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction.

Optionally, after the step of performing a welding operation on the initial battery string to obtain a battery string, the method further includes:

and performing light injection treatment on the battery string.

Optionally, before the step of performing a welding operation on the initial battery string to obtain a battery string, the method further includes:

placing a plurality of compaction tools on the initial battery string; and

after the step of performing the welding operation on the initial battery string to obtain the battery string, the method further includes:

and carrying out the plurality of pressing tools away from the battery strings.

In a second aspect, the present application also discloses a battery string preparation device, which includes: the device comprises a battery piece feeding mechanism, a battery piece conveying mechanism, a welding strip conveying mechanism and a welding mechanism; the battery piece feeding mechanism is used for equidistantly and alternately arranging N battery pieces along the first direction, wherein N is an integer greater than or equal to 2;

The battery piece carrying mechanism is arranged adjacent to the battery piece feeding mechanism and is used for acquiring and moving N battery pieces so that the N battery pieces are arranged at equal intervals along the vertical direction;

the welding strip carrying mechanism is used for acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and the battery pieces and the welding strips are arranged in a crossed manner in the vertical direction;

the welding strip conveying mechanism and the battery piece conveying mechanism are also used for driving the welding strips and the battery pieces to alternately descend along the vertical direction so as to stack the battery pieces and the welding strips;

and the welding mechanism is used for performing welding operation on the stacked battery pieces and the welding strips so as to obtain a battery string.

Optionally, the battery string preparation device further includes: and the light injection mechanism is arranged on one side, far away from the battery piece conveying mechanism, of the welding mechanism and is used for carrying out light injection treatment on the battery strings.

Optionally, the battery string preparation device further includes: the battery string conveying mechanism is arranged between the welding mechanism and the light injection mechanism and is used for buffering the battery string and transferring the battery string from the welding mechanism to the light injection mechanism.

Optionally, the battery string handling and conveying mechanism includes: the battery string sucking component sucks the battery string from the welding mechanism to the conveying belt mechanism, and the conveying belt mechanism is used for buffering the battery string and transferring the battery string to the light injection mechanism.

Optionally, the at least two parallel conveyor belt mechanisms include a first conveyor belt mechanism and a second conveyor belt mechanism; the battery string sucking component is used for sucking the battery string with the number of 2m to the second conveying belt mechanism and sucking the battery string with the number of 2m+1 to the first conveying belt mechanism, wherein m is an integer greater than or equal to 0.

Optionally, the light injection part includes: two battery string conveying mechanisms arranged in parallel and two light injection thermostatic chambers arranged in parallel, wherein one battery string conveying mechanism corresponds to one light injection thermostatic chamber; wherein,

one of the battery string conveying mechanisms corresponds to the first conveying belt mechanism, and the battery string conveying mechanism is used for conveying the battery strings on the first conveying belt mechanism to the corresponding light injection thermostatic chamber; the other battery string conveying mechanism corresponds to the second conveying belt mechanism, and is used for conveying the battery strings on the second conveying belt mechanism to the corresponding light injection thermostatic chamber.

Optionally, the conveyor belt mechanism is provided with a second heating module for heating the battery string on the conveyor belt mechanism.

Optionally, the battery string preparation device further includes: the compressing tool carrying mechanism is arranged adjacent to the welding mechanism and is used for placing a plurality of compressing tools on the battery string or removing a plurality of compressing tools from the battery string.

Optionally, the compaction tool handling mechanism includes: the device comprises a second base, a compaction tool feeding part, a compaction tool discharging part and a compaction tool conveying part; wherein,

the compaction tool feeding part is arranged on the second base;

the pressing tool blanking component and the pressing tool loading component are arranged at intervals along the first direction;

the compaction tool conveying component is arranged between the compaction tool feeding component and the compaction tool discharging component and is used for conveying the compaction tool.

Optionally, the battery piece feeding mechanism includes: the battery piece moving carrier, the feeding robot and the positioning camera; wherein,

The battery piece moving carrier is provided with a feeding level and a discharging level;

the positioning camera is used for photographing the battery piece, determining the position information of the battery piece and sending the position information to the feeding robot;

the feeding robot is used for sucking the battery piece, correcting and positioning the battery piece according to the position information, and placing the battery piece on the battery piece moving carrier at the feeding level;

the battery piece moving carrier is used for moving the battery piece from the loading position to the unloading position.

Optionally, the battery piece handling mechanism includes: the battery piece sucking component, the first transfer platform and the first base; wherein,

the battery piece absorbing component is movably connected to the first transfer platform, the first transfer platform is movably connected to the first base, the battery piece absorbing component is used for absorbing the battery pieces, the distance between the battery piece absorbing components can be adjusted, and the first transfer platform is used for driving the battery piece absorbing component to move on the first base; the battery piece absorbing component comprises a battery piece absorbing piece, a first moving module, a second moving module and a first servo motor assembly, wherein the battery piece absorbing piece is connected to the first moving module and can move on the first moving module along a second direction, and the second direction is a direction perpendicular to the horizontal first direction on a horizontal plane; the first movable module is movably connected with the second movable module and can move on the second movable module along the vertical direction.

Optionally, the solder strip handling mechanism includes: a substrate and a solder tape carrying member; wherein,

the welding strip conveying component is connected with the substrate, and the substrate is used for limiting the welding strip conveying mechanism, so that the welding strip conveying mechanism can only move in a first direction;

the welding strip carrying component comprises a welding strip clamping component and a third moving module, and the third moving module is used for driving the welding strip clamping component to move in the vertical direction;

the welding strip clamping component is used for clamping N+1 welding strips and moving the N+1 welding strips, so that each battery piece is located between two adjacent welding strips and the welding part of the battery piece, and the battery pieces and the welding strips are arranged in a crossed mode in the vertical direction.

Optionally, the solder strip handling mechanism further includes: the welding strip carrier component is provided with a welding strip clamping piece and a welding strip cutting piece, the welding strip clamping piece is used for clamping the whole welding strip, and the welding strip cutting piece is used for cutting the whole welding strip into N+1 welding strips.

Optionally, the welding mechanism includes: welding the lamp box component, the first battery string conveying belt and the first heating module; wherein,

The first battery string conveying belt is used for conveying the battery strings;

the first welding lamp box component is arranged adjacent to the first battery string conveying belt, and welding of the battery strings is completed;

the first heating module is connected to the first battery string conveying belt to heat the battery string.

In the embodiment of the application, N battery pieces are equidistantly arranged along the horizontal first direction, wherein N is an integer greater than or equal to 2; arranging N+1 battery pieces at equal intervals along the vertical direction; acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction; driving the welding strips and the battery pieces to alternately descend along the vertical direction so as to enable the battery pieces and the welding strips to be stacked to form an initial battery string; and performing welding operation on the initial battery string to obtain the battery string. Through with required N battery piece of battery cluster and N+1 weld area once prepare to once transport and pile up N battery piece and N+1 weld area can effectually improve battery cluster and pile up efficiency, and then, improve the preparation efficiency of battery cluster.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a flowchart illustrating steps of a method for manufacturing a battery string according to an embodiment of the present application;

fig. 2 is a schematic view of the corresponding component structure of the battery string manufacturing method shown in fig. 1;

FIG. 3 is a flowchart illustrating steps of another method for manufacturing a battery string according to an embodiment of the present application;

fig. 4 is a schematic view of the corresponding component structure of the battery string preparing method shown in fig. 3;

fig. 5 is a schematic view of a battery string preparing apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a battery piece feeding mechanism according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a battery sheet handling mechanism according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a solder strip handling mechanism according to an embodiment of the present application;

FIG. 9 is a schematic view of a solder tape carrier package according to an embodiment of the present application;

FIG. 10 is a schematic view of the construction of the solder ribbon clamp in the solder ribbon carrier assembly shown in FIG. 9;

FIG. 11 is a schematic view of the construction of the solder ribbon severing member in the solder ribbon carrier assembly shown in FIG. 9;

FIG. 12 is a schematic cross-sectional view of a battery tab and solder strip according to an embodiment of the present application;

fig. 13 is a schematic structural view of a handling mechanism for a pressing tool according to an embodiment of the present application;

FIG. 14 is a schematic view of a second base and compression tooling loading unit according to an embodiment of the present application;

fig. 15 is a schematic structural view of a transporting component of a compaction tool according to an embodiment of the present application;

fig. 16 is a schematic structural view of a battery string handling and conveying mechanism according to an embodiment of the present application;

FIG. 17 is a schematic view of a light injection mechanism according to an embodiment of the present application;

FIG. 18 is a schematic view showing a cross-sectional structure of the light injection mechanism of FIG. 17 at a certain angle;

fig. 19 is a schematic view showing a cross-sectional structure of the light injection mechanism of fig. 17 at another angle.

Reference numerals: 1-battery piece, 100-battery piece vertical arrangement unit, 2-welding strip, 200-welding strip vertical arrangement unit, 7-pressing tool, Y-first direction, X-second direction, Z-vertical direction, 10-battery piece feeding mechanism, 101-feeding robot, 102-feeding level, 103-discharging level, 104-positioning camera, 105-battery piece moving carrier, 20-battery piece handling mechanism, 201-battery piece sucking component, 2011-battery piece sucking component, 2012-first moving module, 2013-second moving module, 2014-first servo motor component, 202-first transferring platform, 2021-first linear guide, 2022-first rack, 2023-second servo motor component, 203-first base, 2031-second rack, 2032-second linear guide, 30-welding strip handling mechanism, 301-substrate, 302-welding strip handling component, 3021-third moving module, 3022-solder strip gripping means, 303-solder strip carrier means, 3031-uncut solder strip, 3032-solder strip gripping means, 30321-clamp, 3033-solder strip cutting means, 30331-cutter, 304-fourth moving module, 40-pressing tool handling means, 401-second base, 4011-third linear guide, 4012-third rack, 402-pressing tool loading means, 4021-pressing tool suction means, 4021-1-third servo motor means, 4021-2-fifth moving module, 4021-3-first adjusting means, 4021-4-first pressing tool suction means, 4022-fourth linear guide, 4023-fourth rack, 4024-fourth servo motor means, 403-pressing tool blanking means, 4031-second pressing tool suction means, 4032-sixth moving module, 4033-seventh moving module, 404-pressing tool transport means, 4041-tool conveyor belt, 4042-positioning block, 4043-blocking piece, 4044-positioning mechanism, 50-welding mechanism, 501-welding lamp box part, 502-first battery string conveying belt, 503-first heating module, 60-battery string carrying conveying mechanism, 601-battery string sucking part, 602-eighth moving module, 603-ninth moving module, 604-first conveying belt mechanism, 605-second conveying belt mechanism, 606-second heating module, 70-light injection mechanism, 701-first battery string conveying part, 7011-second battery string conveying belt, 702-second battery string conveying part, 7021-third battery string conveying belt, 703-light injection thermostatic chamber, 7031-light source, 7032-first light source shield, 7033-second light source shield, 7034-third light source shield, 704-light injection temperature control part, 705-connecting pipe, 706-cooling chamber, 7061-cooling coil part, 7062-cooling shield.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, a step flowchart of a battery string preparation method according to an embodiment of the present application is shown, and as shown in fig. 1, the battery string preparation method may specifically include the following steps:

step 101: n battery pieces are equidistantly arranged along the horizontal first direction, wherein N is an integer greater than or equal to 2.

In the embodiment of the application, N battery pieces 1 required by the battery string can be horizontally and equidistantly arranged along the first direction Y, and the interval between two adjacent battery pieces 1 can be the interval between two adjacent battery pieces 1 after the final battery string is welded. Specifically, the first direction Y may be a distribution direction of the N battery pieces 1 and the n+1 solder strips 2 after the welding of the battery string is completed.

In the drawings of the embodiment of the present application, only the case where the number of the battery pieces 1 is 3 and the number of the solder strips 2 is 4 is shown. In practical application, a person skilled in the art may set the number of the battery pieces 1 and the solder strips 2 according to the practical situation, and only the number of the solder strips 2 needs to be one more than the number of the battery pieces 1, and the number of the battery pieces 1 and the number of the solder strips 2 are not particularly limited in the embodiment of the application.

Step 102: n battery pieces are equidistantly arranged along the vertical direction at intervals.

In the embodiment of the present application, the battery piece handling mechanism 20 may be used to absorb the movement of the plurality of battery pieces 1 along the vertical direction, and the movement range of each battery piece 1 along the vertical direction may be different, so as to set the plurality of battery pieces 1 at intervals along the vertical direction, so as to obtain the battery piece vertical arrangement unit 100 shown in S102 in fig. 2.

Step 103: and acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction.

Similarly, the welding strip handling mechanism 30 may be used to clamp n+1 welding strips 2 for movement in the vertical direction, and the movement amplitude of each welding strip 2 in the vertical direction may be different, so as to set a plurality of welding strips 2 at equal intervals in the vertical direction, so as to obtain the welding strip vertical row arrangement unit 200 shown in S102 in fig. 2. Finally, the welding strips 2 are horizontally moved along the first direction Y, so that each battery piece 1 is positioned between two adjacent welding strips 2 and the welding part of the battery piece 1, the battery pieces 1 and the welding strips 2 are arranged in a crossing manner in the vertical direction, and the battery pieces 1 and the welding strips 2 are stacked conveniently.

In the embodiment of the application, n+1 solder strips 2 can be prepared at one time, and n+1 solder strips 2 are carried to the upper part of the stacking platform, wherein n+1 solder strips 2 are horizontally and equidistantly arranged along the first direction Y. The battery cells 1 and the solder strips 2 horizontally arranged in the first direction Y may be as shown in S101 of fig. 2.

It should be noted that, in a specific application, n+1 solder strips 2 are obtained, and n+1 solder strips 2 are carried to above the stacking platform, where the operation of horizontally and equidistantly arranging n+1 solder strips 2 along the first direction Y may be performed simultaneously with the step 101 and the step 102, so as to improve the stacking efficiency of the solder strips 2 and the battery pieces 1.

It should be noted that, in the present disclosure, the welding strip 2 may specifically be a welding strip set connected between two adjacent battery pieces 1, and the number of welding strips in the welding strip set may be set according to the welding requirements of the battery pieces, which is not specifically limited in the present disclosure. Optionally, the step of disposing N battery slices 1 at equal intervals along the vertical direction may specifically include the following substeps:

substep S11: and sucking N battery pieces above the stacking platform, and keeping the distance between adjacent battery pieces along the first horizontal direction unchanged.

In a specific application, after the N battery pieces 1 are horizontally and equidistantly arranged along the first direction Y, the battery piece handling mechanism 20 may be used to suck the N battery pieces 1 above a stacking platform, where the stacking platform may specifically be a platform where the battery pieces 1 and the solder strips 2 are stacked.

It should be noted that, in the process of sucking the N battery pieces 1 above the stacking platform by using the battery piece handling mechanism 20, the distance between the adjacent battery pieces 1 along the horizontal first direction should be kept unchanged so as to keep the N battery pieces 1 arranged at equal intervals along the first direction Y.

Substep S12: and driving the N battery pieces to move along the vertical direction, so that the battery pieces are arranged at equal intervals in a step shape along the vertical direction.

In the embodiment of the present application, the battery piece handling mechanism 20 may be used to absorb the movement of N battery pieces 1 along the vertical direction, and the horizontal distance between two adjacent battery pieces 1 along the first direction Y is unchanged. The plurality of battery pieces 1 may be arranged according to a certain distance D, so that the plurality of battery pieces 1 are arranged at equal intervals in a step shape along the vertical direction, and the battery piece vertical arrangement unit 100 shown in fig. 2 is formed.

Optionally, the step of obtaining n+1 solder strips 2 and driving the solder strips to move so that each of the battery pieces is located between two adjacent solder strips and a welded portion of the battery piece, and implementing the cross arrangement of the battery piece and the solder strips in the vertical direction may specifically include the following substeps:

Substep S121: and clamping the N+1 welding strips to the upper part of the stacking platform, wherein the N+1 welding strips are distributed at equal intervals above the stacking platform along the horizontal first direction.

In a specific application, the solder strip handling mechanism 30 may directly obtain n+1 solder strips 2 horizontally and equidistantly arranged along the first direction Y, and clamp the n+1 solder strips 2 above a stacking platform, where the stacking platform may specifically be a platform for stacking the battery slices 1 and the solder strips 2.

It should be noted that, during the process of clamping and placing the solder strips 2, the pitch between the adjacent solder strips 2 along the first direction Y may be kept unchanged.

Substep S22: and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction.

In the embodiment of the application, the welding strip handling mechanism 30 may be used to drive the welding strips 2 to move, so that each battery piece 1 is located between two adjacent welding strips 2 and the welding portion of the battery piece 1, and the battery pieces 1 and the welding strips 2 are arranged in a crossed manner in the vertical direction, so that the battery pieces 1 and the welding strips 2 are stacked in the subsequent process.

Optionally, the step of driving the solder strips 2 to move so that each of the battery pieces 1 is located between two adjacent solder strips 2 and the welded portion of the battery piece 1 to achieve the cross arrangement of the battery pieces 1 and the solder strips 2 in the vertical direction may include the substeps of:

sub-step S221: the plurality of welding strips are driven to move along the vertical direction, so that the plurality of battery pieces are distributed at intervals in a step shape along the vertical direction, and the height of one welding strip is positioned between two adjacent battery pieces along the vertical direction.

In the embodiment of the application, first, the horizontal spacing between two adjacent welding strips 2 along the first direction Y can be kept unchanged, and n+1 welding strips 2 are driven to move along the vertical direction, so that n+1 welding strips 2 are distributed at step intervals along the vertical direction. In the process of driving the n+1 solder strips 2 to be distributed at intervals along the vertical direction, it is necessary to control the height of one solder strip 2 to be located between two adjacent battery pieces 1, so that the solder strip 2 is horizontally inserted between two adjacent battery pieces 1 along the first direction Y in the subsequent process.

Sub-step S222: and driving N+1 welding strips to gather along the first direction.

In a specific application, after moving the n+1 bonding straps 2 in the vertical direction to a desired height, the n+1 bonding straps 11 may be driven together in the first direction Y. By driving the n+1 bonding tapes 2 to move together horizontally in the first direction Y, the horizontal pitch of the n+1 bonding tapes 2 can also be adjusted to a proper position to obtain the bonding tape vertical alignment unit 200 shown in fig. 2.

Sub-step S223: and driving the N+1 welding strips after gathering to move along the first direction so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction.

In the embodiment of the application, under the condition that the positions of the plurality of battery pieces 1 and the welding strips 2 in the vertical direction are adjusted in place, the positions of the battery pieces 1 can be kept unchanged, and the welding strips 2 are driven to integrally move along the first direction Y, so that each battery piece 1 is positioned between two adjacent welding strips 2 and the welding part of the battery piece 1, the cross arrangement of the battery pieces 1 and the welding strips 2 in the vertical direction is realized, and the battery pieces 1 and the welding strips 2 are conveniently stacked in the subsequent process.

Step 104: and driving the welding strips and the battery pieces to alternately descend along the vertical direction so that the battery pieces and the welding strips are stacked to form an initial battery string.

In the embodiment of the application, after the battery piece 1 and the welding strip 2 are arranged in a crossing manner along the vertical direction, the projection of the battery piece 1 and the welding strip 2 along the vertical direction can form a series of battery strings. At this time, the solder ribbon carrying mechanism 30 and the battery piece carrying mechanism 20 may be employed to drive the solder ribbon 2 and the battery piece 1 to alternately descend in the vertical direction so that the solder ribbon 2 and the battery piece 1 are stacked.

In practical application, the solder strip 2 and the battery piece 1 may be lowered in order (01-07) shown in S103 in fig. 2 in order to stack the solder strip 2 and the battery piece 1.

Firstly, the 01 solder strip can be vertically downwards placed on the stacking platform, and the solder strip carrier carrying the 01 solder strip is withdrawn to the initial position, so that the subsequent stacking of the battery piece 1 and the solder strip 2 is prevented from being influenced by the solder strip carrier.

Then, the 02 battery piece is placed vertically downward on the rear half of the 01 welding strip, and the battery piece carrier carrying the 02 battery piece is withdrawn back to the initial position, so that the battery piece carrier is prevented from affecting the subsequent stacking of the battery piece 1 and the welding strip 2.

Next, the 03 solder strip may be vertically lowered, wherein the front half of the 03 solder strip may be placed on the 02 battery cells, the rear half of the 03 solder strip is placed on the stacking platform, and the solder strip carrier carrying the 03 solder strip is withdrawn to the initial position to avoid the solder strip carrier affecting subsequent stacking of the battery cells 1 and the solder strip 2.

Finally, the 04 cell, the 05 solder strip, the 06 cell and the 07 solder strip can be sequentially stacked on the stacking platform by referring to the steps until stacking of all the solder strips 2 and the cell 1 is completed, so as to obtain an initial cell string.

In the embodiment of the application, as the N battery pieces 1 and the N+1 welding strips 2 can be stacked in an integral stacking mode. Therefore, the N battery pieces 1 and n+1 welding strips 2 required by the battery string can be prepared at one time, and the N battery pieces 1 and n+1 welding strips 2 are carried and stacked at one time by the battery piece carrying mechanism 20 and the welding strip carrying mechanism 30, so that the stacking efficiency of the battery string is effectively improved, and the preparation efficiency of the battery string is further improved.

Step 105: and adopting a welding mechanism to weld the initial battery string so as to obtain the battery string.

In the embodiment of the present application, after stacking N battery pieces 1 and n+1 welding strips 2 into an initial battery string, the welding mechanism 50 may be used to connect the battery pieces 1 and the welding strips 2 together, so as to complete the welding operation of the battery string, so as to obtain the battery string shown in fig. S104. The welding mechanism 50 may be, for example, an infrared series welding mechanism.

In summary, the method for preparing a battery string according to the embodiment of the present application may at least include the following advantages:

Referring to fig. 3, a flowchart illustrating steps of another battery string preparation method according to an embodiment of the present application, as shown in fig. 3, may specifically include the following steps:

step 301: n battery pieces are arranged at intervals along a first horizontal direction, wherein N is an integer greater than or equal to 2.

In the embodiment of the present application, the specific operation of step 301 may refer to step 101 in the foregoing embodiment, which is not described herein.

Step 302: and a plurality of battery pieces are arranged at equal intervals along the vertical direction.

In the embodiment of the present application, the specific operation of step 302 may refer to step 102 in the foregoing embodiment, which is not described herein.

Step 303: and acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction.

In the embodiment of the present application, the specific operation of step 303 may refer to step 103 in the foregoing embodiment, which is not described herein.

Step 304: and driving the welding strips and the battery pieces to alternately descend along the vertical direction so that the battery pieces and the welding strips are stacked to form an initial battery string.

In the embodiment of the present application, the specific operation of step 304 may refer to step 104 in the foregoing embodiment, which is not described herein.

Step 305: and placing a plurality of compaction tools on the initial battery string.

In the embodiment of the application, after stacking a plurality of battery pieces 1 and a plurality of welding strips 2 into an initial battery string, the battery pieces 1 and the welding strips 2 can be pressed by adopting the pressing tool 7, so that the positions of the battery pieces 1 and the welding strips 2 do not move, the positions of the battery pieces 1 and the welding strips 2 do not deviate in the subsequent welding process, and the quality of the final battery string is improved.

For example, the number of pressing tools 7 may correspond to the number of the battery pieces 1, and one pressing tool 7 may press on one battery piece 1 and the solder strip 2 above the battery piece 1 (as shown in S304 in fig. 3). For example, in the case where the number of the battery pieces 1 is 3, the number of the pressing tools 7 may be 3 accordingly.

Step 306: and performing welding operation on the initial battery string to obtain the battery string.

In the embodiment of the present application, the specific operation of step 306 may refer to step 105 in the foregoing embodiment, which is not described herein.

Step 307: and carrying out the plurality of pressing tools away from the battery strings.

In the embodiment of the present application, after the welding of the battery string is completed, the pressing tool 7 may be moved away from the battery string (as shown in S306 in fig. 3), so as to avoid the pressing tool 7 from affecting the subsequent battery string processing procedure

Step 308: and performing light injection treatment on the battery string.

In the embodiment of the present application, after the pressing tool 7 on the battery string is removed, the battery string may be transported to a light injection process, so that the light injection mechanism 70 is used to perform light injection processing on the battery string. It should be noted that after the welding of the battery string is completed, the battery string needs to be subjected to preheating and heat-preserving treatment before being conveyed to the light injection process. After the battery string is subjected to light injection treatment, the photoelectric conversion efficiency of the battery string can be greatly improved.

Optionally, the step of performing the light injection treatment on the battery string is specifically divided into two steps:

the first step: light injection is carried out on battery strings in a light injection constant temperature chamber

First, the battery string may be first transferred to a light injection thermostatic chamber to perform preliminary light injection on the battery string. Specifically, can make the light injection constant temperature cavity temperature keep at stable temperature through temperature regulating device, temperature regulating device passes through the effect that the cavity temperature was controlled through the circulation of gas to the light injection constant temperature cavity with a certain amount of gas, cavity temperature control scope: 100-250 ℃.

And a second step of: battery string completes cooling treatment in cooling chamber

The battery string is directly conveyed into the cooling chamber for cooling treatment after the light injection process is completed, cooling water is introduced into the cooling chamber and then cools the introduced gas, and the purpose of cooling the battery string is achieved through gas circulation.

In practical application, the photoelectric conversion efficiency of the battery piece 1 in the battery string is reduced by the welding operation, so in the embodiment of the application, the photoelectric conversion efficiency of the battery string is greatly improved by setting the light injection procedure after the welding operation, that is, performing the light injection treatment on the battery string after the welding of the battery string is completed, thereby avoiding the influence of the welding operation on the light injection treatment effect. Moreover, by integrating the welding operation and the light injection process into the same apparatus, the manufacturing efficiency of the battery string can be greatly improved.

In summary, the preparation process of the battery string according to the embodiment of the application at least may include the following advantages:

in the embodiment of the application, the N battery pieces and the N+1 welding strips required by the battery string are prepared at one time, and the N battery pieces and the N+1 welding strips are carried and stacked at one time by the battery piece carrying mechanism and the welding strip carrying mechanism, so that the battery string stacking efficiency can be effectively improved. In addition, the light injection procedure is arranged after the welding operation, namely, the light injection treatment is carried out on the battery string after the battery string is welded, so that the influence of the welding operation on the light injection treatment effect can be avoided, and the photoelectric conversion efficiency of the battery string is greatly improved. In addition, the manufacturing efficiency of the battery string can be greatly improved by integrating the welding operation and the light injection process into the same device.

The embodiment of the application also provides a battery string preparation device which can be used for preparing the battery string. Specifically, the battery string preparing apparatus may be used to perform each step in the above-described battery string preparing method.

Referring to fig. 5, a schematic structural diagram of a battery string preparing apparatus according to an embodiment of the present application is shown, and as shown in fig. 5, the battery string preparing apparatus may specifically include: a battery piece feeding mechanism 10, a battery piece carrying mechanism 20, a welding strip carrying mechanism 30 and a welding mechanism 50; wherein the battery piece feeding mechanism 10 and/or the battery piece carrying mechanism 20 may be used to arrange the plurality of battery pieces 1 at equal intervals along the first direction Y; the battery piece carrying mechanism 20 is arranged adjacent to the battery piece feeding mechanism 10, and the battery piece carrying mechanism 20 can be used for acquiring and moving N battery pieces 1 and arranging the N battery pieces 1 at equal intervals along the vertical direction Z; the solder strip handling mechanism 30 may be used to acquire n+1 solder strips 2 and drive the solder strips 2 to move so that each battery piece 1 is located between two adjacent solder strips 2 and the welded portion of the battery piece 1, so as to realize the cross arrangement of the battery pieces 1 and the solder strips 2 in the vertical direction Z; the welding strip handling mechanism 30 and the battery piece handling mechanism 20 may be used to drive the welding strip 2 and the battery piece 1 to alternately descend in the vertical direction Z so that the battery piece 1 and the welding strip 2 are stacked, and the welding mechanism 50 may be used to perform a welding operation on the stacked battery piece 1 and the welding strip 2 to obtain a battery string.

In the embodiment of the application, a plurality of N battery pieces 1 are distributed at equal intervals along a horizontal first direction Y by a battery piece feeding mechanism 10; acquiring and moving N battery pieces 1 by adopting a battery piece conveying mechanism 20, arranging the N battery pieces 1 at equal intervals along a vertical direction Z, acquiring N+1 welding strips 2 by adopting a welding strip conveying mechanism 30, and driving the welding strips 2 to move so that each battery piece 1 is positioned between two adjacent welding strips 2 and a welding part of the battery piece 1; the welding strip conveying mechanism 30 and the battery piece conveying mechanism 20 are adopted to drive the welding strip 2 and the battery piece 1 to alternately descend along the vertical direction Z, so that the battery piece 1 and the welding strip 2 are stacked to form an initial battery string; the welding mechanism 50 is used to perform a welding operation on the initial battery string to obtain the battery string. Through once preparing a plurality of battery pieces 1 and a plurality of welding strips 2 that will be required by battery cluster to once carry and stack a plurality of battery pieces 1 and a plurality of welding strips 2 through battery piece transport mechanism 20 and welding strip transport mechanism 30, can effectually improve battery cluster stack efficiency, and then, improve the preparation efficiency of battery cluster.

Referring to fig. 6, a schematic structural diagram of a battery piece feeding mechanism according to an embodiment of the present application is shown, and as shown in fig. 6, the battery piece feeding mechanism 10 may specifically include: a battery piece moving carrier 105, a feeding robot 101 and a positioning camera 104; wherein, the battery piece removes and is provided with two working positions on the microscope carrier 105: an upper level 102 and a lower level 103. Specifically, the battery piece 1 may be conveyed to a photographing position, so that the positioning camera 104 may photograph the battery piece 1, and the positioning camera 104 may determine the position information of the battery piece 1 and send the position information to the feeding robot 101. After the feeding robot 101 sucks the photographed battery piece 1, the correction positioning is performed on the battery piece 1 according to the position information, and then the battery piece 1 is placed on the battery piece moving carrier 105 at the feeding level 102. After each piece of the battery piece 1 is placed on the battery piece moving carrier 105 by the feeding robot 101, the battery piece moving carrier 105 is horizontally stepped by a distance L, and the distance L is a distance between the width of the battery piece 1 for preparing the battery string and the interval between the adjacent battery pieces 1. And so on until N pieces of the battery pieces 1 are placed on the battery piece moving stage 105, the battery piece moving stage 105 moves to the discharging position 103, and the battery piece carrying mechanism 20 waits for sucking all the battery pieces 1 from the discharging position 103 of the battery piece moving stage 105. When the discharging of the battery 1 on the battery moving carrier 105 is completed, the moving carrier 105 returns from the discharging position 103 to the charging position 102, and the loading robot 101 waits for the battery 1 to be placed on the battery moving carrier 105.

Referring to fig. 7, a schematic diagram of a battery piece carrying mechanism according to an embodiment of the present application is shown. As shown in fig. 7, the battery piece handling mechanism 20 may specifically include: a battery piece suction member 201, a first transfer platform 202, and a first base 203; the battery piece absorbing component 201 is movably connected to the first transferring platform 202, and the first transferring platform 202 is movably connected to the first base 203. In a specific application, the battery sheet handling mechanism 20 may draw the battery sheet 1 from the battery sheet feeding mechanism 10, and stack the solder ribbon 2 clamped by the solder ribbon 2 handling mechanism 30 to discharge the initial battery string by the method shown in fig. 2 and 4.

In a specific application, the battery piece handling mechanism 20 is composed of N battery piece sucking components 201, where the number of N is the number of battery pieces 1 required by the battery strings, and in order to meet the requirement that the device is compatible with the number of battery pieces 1 in battery strings with different specifications, the number of N is set according to the current main stream battery string specification, and the condition of subsequent upgrading is left. Moreover, in order to be suitable for processing of battery strings of different models, the pitch between the battery piece suction members 201 may be adjusted according to the pitch of the battery pieces 1 in the battery string. However, once the distance between the battery cells 1 is determined during the process of manufacturing a certain type of battery string, the distance between the battery cell sucking members 201 is adjusted in place according to the distance between the battery cells 1, and then the distance between the battery cell sucking members 201 is not generally adjusted during the process of sucking and transporting the battery cells 1 by the battery cell sucking members 201.

Specifically, the cell sucking members 201 may be used to suck the cells 1 on the moving stage 105 onto the cell handling mechanism 20, and the interval between the cell sucking members may be adjusted. Subsequently, the battery piece handling mechanism 20 handles all the battery pieces 1 above the welding conveyor belt, and each battery piece suction member 201 moves in the vertical direction Z so that the battery pieces 1 are arranged at equal intervals in the vertical direction Z. In practical application, the battery piece carrying mechanism 20 has the adjusting functions in three directions, namely, the first direction Y, the second direction X and the vertical direction Z, so that the arrangement requirements of different battery strings can be met.

As shown in fig. 7, the battery piece suction part 201 may specifically include a battery piece suction part 2011, a first moving module 2012, a second moving module 2013, and a first servo motor assembly 2014. The battery piece suction member 2011 can be connected to the first moving module 2012 and can move along a second direction X on the first moving module 2012, wherein the second direction X is a direction perpendicular to the first direction Y on a horizontal plane. The first moving module 2012 can be movably connected to the second moving module 2013 and can move on the second moving module 2013 along the vertical direction Z. The first transfer platform 202 may be provided with a first linear guide 2021, a first rack 2022, and a second servo motor assembly 2023, the first rack 2022 being connected to the first servo motor assembly 2014. A second rack 2031 and a second linear guide 2032 may be provided on the first base 203, the second rack 2031 being coupled to the second servo motor assembly 2023.

In a specific application, the following sequence of actions of the cell handling mechanism 20 to suck up the cell 1 is as follows: the second moving module 2013 on the battery piece sucking component 201 drives the battery piece sucking piece 2011 and the first moving module 2012 to descend for a certain distance in the vertical direction Z, so that the battery piece sucking piece 2011 sucks the battery piece 1 on the battery piece moving carrier 105. After the battery tab suction member 2011 suctions the battery tab 1, the first traveling module 2012 rises to the battery string stacking position in the vertical direction Z. The first servo motor assembly 2014 is composed of a servo motor and a driving gear, the servo motor drives the driving gear to drive the battery piece absorbing component 201 to move in a first direction Y by being meshed with a first rack 2022 on the first transfer platform 202, different spacing requirements of the battery pieces 1 are met through the driving mode, and the first linear guide 2021 can be used for guiding movement of the battery piece absorbing component 201 along the first direction Y so as to improve moving accuracy of the battery piece absorbing component 201 in the first direction Y.

Specifically, the second servo motor 2023 on the first transfer platform 202 is composed of a servo motor and a driving gear, and is mainly used for driving the driving gear to mesh with the second rack 2031 on the first base 203 through the servo motor, so as to drive the first transfer platform 202 to reciprocate in the second direction X under the guiding action of the second linear guide 2032.

In practical application, before preparing the stacked battery string, the battery sheet handling mechanism 20 needs to handle the battery sheet 1 to the stacking platform, and the main operation sequence is as follows: after the second servo motor assembly 2023 drives the battery piece sucking component 201 to move a distance in the second direction X, the first moving module 2012 drives the battery piece sucking component 2011 to move in the vertical direction Z, so as to ensure that all the battery pieces 1 reach the battery string stacking position, and prepare for subsequent battery string stacking after reaching the stacking position.

Referring to fig. 8, a schematic diagram of a solder strip handling mechanism according to an embodiment of the present application is shown. As shown in fig. 8, the solder ribbon handling mechanism 30 may specifically include: a substrate 301, a solder tape carrying member 302, a solder tape stage member 303, and a fourth moving module 304. The solder ribbon carrying member 302 is connected to the substrate 301, and the substrate 301 may fix and position the solder ribbon carrying member 302 such that the solder ribbon carrying member 302 can only move in the first direction Y. The solder ribbon carrying member 302 serves to clamp the cut solder ribbon 2, and arrange the solder ribbon 2 in the first direction Y and the vertical axis direction so as to complete battery serial stacking. The solder tape stage member 303 is provided with a solder tape gripping member 3032.

Specifically, the ribbon handling mechanism 30 may be composed of n+1 ribbon handling members 302, n+1 ribbon stage members 303, and the like, and functions to perform the cutting of the ribbon 2, the handling of the ribbon 2, and the spatial arrangement. In order to meet the requirement that the equipment is compatible with the number of the welding strips 2 in battery strings with different specifications, the number of N is set according to the current specification of the main stream battery string, and the condition of subsequent upgrading is reserved.

In practical applications, the solder ribbon stage member 303 may be disposed at a solder ribbon pulling position, the solder ribbon pulling mechanism pulls the whole solder ribbon 2 at a time and places the whole solder ribbon 2 on the solder ribbon stage member 303, the solder ribbon 2 is clamped by the solder ribbon clamping member 3032 on the solder ribbon stage member 303, the solder ribbon 2 is cut by the solder ribbon cutting member 3033 on the solder ribbon stage member 303 according to the distance of the solder ribbon 2 required by the battery string, and then the solder ribbon stage member 303 is moved to the solder ribbon carrying position.

Specifically, the solder strip carrying member 302 may clamp the solder strips 2 on the solder strip carrying table member 303, where the solder strip carrying members 302 are sequentially arranged at equal intervals in the vertical direction Z, and the vertical distance between adjacent solder strips 2 is smaller than the vertical distance between adjacent battery pieces 1 of the battery piece carrying member 302 in the vertical direction Z. After the vertical arrangement is completed, the solder strip carrying members 302 are moved together in the horizontal direction so that the solder strips 2 satisfy the distance of the horizontal arrangement required for the battery strings.

In practical application, after the arrangement of the solder strips 2 is completed, the solder strip carrying member 302 is moved horizontally to the cell arrangement position as a whole, so that the cells 1 and the solder strips 2 are arranged crosswise in the vertical direction Z. At this time, the projection of the battery piece 1 and the welding strip 2 in the horizontal direction meets the requirement of stacking battery strings.

Referring to fig. 9, a schematic structural view of a solder tape carrier member according to an embodiment of the present application is shown, referring to fig. 10, a schematic structural view of a solder tape gripping member in the solder tape carrier member shown in fig. 9 is shown, and from referring to fig. 11, a schematic structural view of a solder tape cutting member in the solder tape carrier member shown in fig. 9 is shown. As shown in fig. 9, the ribbon holder 303 is provided with a ribbon clamping member 3032 and a ribbon cutting member 3033. As shown in fig. 10, the strap clamp 3032 is provided with a clamp 30321. As shown in fig. 11, a cutter 30331 is provided on the ribbon cutting member 3033.

In a specific application, after the whole uncut welding strip 3031 pulled by the pulling mechanism is conveyed to the welding strip clamping position by the third moving module 3021, the welding strip clamping piece 3032 clamps the welding strip 2 by the clamp 30321 under the driving of the air cylinder, and the welding strip cutting piece 3033 cuts the whole welding strip 2 by the cutter 30331 under the driving of the air cylinder, so that the whole welding strip 2 is divided into welding strips 2 with the length required by stacking the battery strings.

The battery string welding device stacks the battery strings in the following operation sequence:

first, after the battery piece handling mechanism 20 sucks the battery piece 1, the second servo motor assembly 2023 drives the first transfer platform 202 to move a distance in the second direction X, and the first moving module 2012 drives the battery piece sucking member 2011 to handle the battery piece 1 to the stacking position. At this time, all the battery pieces 1 are on the same horizontal plane, and then the second moving module 2013 drives the battery piece sucking pieces 2011 to arrange the battery pieces 1 at equal intervals in the vertical direction Z, and the battery pieces 1 are arranged in the vertical arrangement unit 100 of the battery pieces as shown in fig. 2.

Then, the solder ribbon carrying member 302 in the solder ribbon carrying mechanism 30 is lifted up by a distance after the solder ribbon 2 is sandwiched from the solder ribbon stage member 303 downward in the vertical direction Z so that all the sandwiched solder ribbons 2 are held on the same horizontal plane, at which time the upper surface height of all the solder ribbons 2 is lower than the lower surface height of the lowermost battery piece 1. Subsequently, the rightmost solder strip clamping part 3022 in the first direction Y remains unchanged in position, and the rest of the solder strip clamping parts 3022 are driven by the third moving module 3021 to move upwards in the vertical direction Z, and the adjacent two parts are equally spaced, that is, the solder strip clamping parts 3022 are arranged in an equidistant step-like manner starting from right to left in the first direction Y. After the above-described operation is completed, the rightmost solder ribbon carrying member 302 is immobilized in the first direction Y by the drive source servo motor thereof, and the other solder ribbon carrying members 302 are moved in the forward direction of the first direction Y to thereby form the solder ribbon vertically arranging unit 200 shown in fig. 2.

Next, after the above operation of the solder tape carrying mechanism 30 is completed, the solder tape carrying member 302 is integrally moved to the position of the battery sheet carrying mechanism 20 by the servo motor drive, and the battery sheet 1 and the solder tape 2 are crossed with each other as shown in fig. 12.

In the process of stacking the battery cells 1 and the solder strips 2, the elevation of the battery cells 1 and the elevation of the solder strips 2 are uniform. For example, if the battery cells 1 become lower in order from left to right, the solder strips 2 become lower in order from left to right, whereas if the battery cells 1 become higher in order from left to right, the solder strips 2 become higher in order from left to right.

Finally, after the above operation is completed, the solder tape gripping member 3022 places the solder tape 2 on the battery string conveying belt, and the solder tape carrying mechanism 30 returns to the initial position with the solder tape gripping member 3022 driven by the own servo motor. The battery tab suction 2011 then places the battery tab 1 over the previously placed solder strip 2. Then, the first moving module 2012 drives the cell suction member 2011 to return to the initial position, and the above actions are repeated to complete stacking of the cell strings. It should be noted that the battery piece 1 can be placed after the welding strip 2 is placed, and the two actions have sequence.

In some alternative embodiments of the present application, the battery string preparing apparatus may further include: the pressing tool handling mechanism 40, the pressing tool handling mechanism 40 is disposed adjacent to the welding mechanism 50, and the pressing tool handling mechanism 40 may be used to place a plurality of pressing tools 7 on a battery string, or to remove a plurality of pressing tools 7 from the battery string.

Referring to fig. 13, a schematic structural diagram of a pressing tool handling mechanism according to an embodiment of the present application is shown, and as shown in fig. 13, the pressing tool handling mechanism 40 may specifically include: a second base 401, a compaction tool loading part 402, a compaction tool unloading part 403, and a compaction tool transporting part 404; wherein, the pressing tool feeding part 402 is arranged on the second base 401; the pressing tool blanking part 403 and the pressing tool loading part 402 are arranged at intervals along the first direction Y; the compaction tool transport part 404 is arranged between the compaction tool loading part 402 and the compaction tool unloading part 403, and the compaction tool transport part 404 may be used for transporting the compaction tool 7.

In a specific application, the compressing tool carrying mechanism 40 may be formed by N compressing tool loading parts 402, N compressing tool unloading parts 403, compressing tool transporting parts 404, etc., in order to meet the requirement of the equipment for the number of compressing tools 7 in the battery strings with different specifications, the number of N is set according to the current main stream battery string specification, and the condition of subsequent upgrading is left.

In practical application, after stacking the battery strings, the pressing tool loading part 402 may suck all the pressing tools 7 required at a time, and then put the whole on the battery strings. After the battery string is subjected to infrared welding, the pressing tool blanking part 403 can integrally remove tools on the battery string, and place all pressing tools 7 on a conveying belt of the pressing tool conveying part 404. The compaction tool transport component 404 delivers the compaction tool 7 to the loading level 102 and positions the tool to meet the next draw of the compaction tool loading component 402.

Specifically, after the pressing tool 7 is sucked, the pressing tool feeding part 402 may be mutually dispersed and moved in the first direction Y so that each tool meets the placement requirement. The component also has the function of accurately adjusting the position of the tool, so that each tool can be accurately pressed on each welding strip 2, and the welding effect of the welding strips 2 is ensured.

In the specific application, after the stacking of the battery strings is completed, the pressing tool loading part 402 in the pressing tool carrying mechanism 40 sucks the pressing tool 7 from the pressing tool transporting part 404 and places the pressing tool on the stacked battery strings. The pressing tool 7 mainly aims at ensuring that the battery piece 1 and the welding strip 2 are tightly attached together, ensuring the effect of subsequent welding, and solving the problems of deviation of the welding strip 2 and the like.

Referring to fig. 14, a schematic structural diagram of a second base and a feeding component of a pressing tool according to an embodiment of the present application is shown, and as shown in fig. 14, a third linear guide 4011 and a third rack 4012 are disposed on the second base 401; the compaction tooling loading assembly 402 may specifically include: the compaction tool suction part 4021, a fourth linear guide 4022, a fourth rack 4023, and a fourth servo motor assembly 4024.

Referring to fig. 15, a schematic structural diagram of a pressing tool transporting component according to an embodiment of the present application is shown, and as shown in fig. 15, the pressing tool transporting component 404 may specifically include a tool conveying belt 4041, a positioning block 4042, a blocking block 4043, and a positioning mechanism 4044. Wherein, the tool conveying belt can be used for conveying and compressing the tool 7,

The feeding action sequence of the pressing tool 7 is as follows:

the first step: the blocking blocks 4043 in the pressing tool conveying part 404 block the pressing tools 7 and enable all the pressing tools 7 to be close together, the positioning mechanism 4044 descends under the action of the air cylinder to press all the pressing tools 7, the other side of the positioning mechanism 4044 is enabled to be close to the positioning block 4042 to complete positioning of the pressing tools 7, and then the positioning mechanism 4044 returns to the initial position under the action of the air cylinder.

And a second step of: all the pressing tool sucking components 4021 are driven by the third servo motor component 4021-1 of the pressing tool sucking components 4021, and a driving gear in the third servo motor component 4021-1 is meshed with the fourth rack 4023, so that the pressing tools 7 move together in the first direction Y, and the center line of each pressing tool sucking component 4021 coincides with the center line of each pressing tool 7 (since the width dimension of each pressing tool 7 is smaller than the width dimension of the battery piece 1, the pressing tool sucking components 4021 need to move together in the first direction Y).

And a third step of: the first pressing tool suction mechanisms 4021-4 on the pressing tool suction component 4021 suck the required pressing tool 7, and the suction adopts an electromagnet mode to suck the tool. Then the fifth moving module 4021-2 moves upward in the vertical direction Z to reach the tool placement position (the bottom of the tool is about 3mm higher than the upper surface of the battery string).

Fourth step: the fourth servomotor element 4024 drives the drive gear to engage the third rack 4012 such that all of the compression tool suction elements 4021 move in the second direction X to reach the compression tool placement position.

Fifth step: the fifth moving module 4021-2 vertically and downwardly presses the pressing tool 7 on the battery string, and after the pressing operation is completed, the feeding part 402 of the pressing tool is pressed, and the second base 401 is returned to the initial position.

In practical application, the first adjusting mechanisms 4021-3 are used for ensuring the accuracy of the placement position of the pressing tool 7, and all the pressing tools 7 can be pressed on each welding strip 2 on the battery string by independently fine-adjusting each first adjusting mechanism 4021-3, so that the welding effect of the welding strips 2 is ensured.

The blanking action sequence of the pressing tool 7 is as follows:

after the battery strings are placed on the pressing tool 7 and then are conveyed to the tool discharging position by the first battery string conveying belt 502 after being welded, a seventh moving module 4033 in the pressing tool discharging part 403 moves in the second direction X towards the positive axial direction to enable a second pressing tool sucking mechanism 4031 to reach the position right above the pressing tool 7 at the tool discharging position, and a sixth moving module 4032 moves in the negative vertical direction Z to enable the second pressing tool sucking mechanism 4031 to suck tools, and an electromagnet is used for electrifying to generate suction to suck the tools. Subsequently, the seventh moving module 4033 moves in the negative direction of the second direction X so that the second pressing tool suction mechanism 4031 reaches directly above the pressing tool transporting member 404, and the sixth moving module 4032 moves in the vertical direction Z to place the pressing tool 7 on the tool conveying belt 4041 of the pressing tool transporting member 404 to transport the pressing tool 7 away through the tool conveying belt 4041.

As shown in fig. 5, the welding mechanism 50 may include a welding light box part 501, a first battery string conveyor belt 502, and a first heating module 503. The welding light box part 501 may be disposed adjacent to the first battery string conveying belt 502 to heat the initial battery string, thereby completing welding of the battery string. By way of example, the welding light box component 501 may employ the current mainstream infrared welding approach to improve welding efficiency. The battery cluster can be carried to first battery cluster conveyer belt 502, and first heating module 503 can be connected in first battery cluster conveyer belt 502, satisfies the heating battery cluster in order to realize the welded purpose on the one hand, on the other hand, after the battery cluster welding, carries out the heat preservation to the battery cluster and preheats the temperature range: 100-200 ℃ and aims to prepare for battery serial light injection.

In some alternative embodiments of the present application, the battery string preparing apparatus may further include: and a light injection mechanism 70, wherein the light injection mechanism 70 is arranged on one side of the welding mechanism 50 away from the battery piece carrying mechanism 20, and the light injection mechanism 70 can be used for performing light injection treatment on the battery strings.

In a specific application, the photoelectric conversion efficiency of the battery piece 1 in the battery string is reduced by the welding operation, so in the embodiment of the application, the photoelectric conversion efficiency of the battery string is greatly improved by setting the light injection procedure after the welding operation, that is, performing the light injection treatment on the battery string after the welding of the battery string is completed, so that the influence of the welding operation on the light injection treatment effect can be avoided. Moreover, by integrating the welding operation and the light injection process into the same apparatus, the manufacturing efficiency of the battery string can be greatly improved.

Optionally, in order to achieve the beat adjustment of the battery string between the light injection process and the welding process, the battery string preparation device further includes: the battery string handling and conveying mechanism 60, the battery string handling and conveying mechanism 60 is arranged between the welding mechanism 50 and the light injection mechanism 70, and the battery string handling and conveying mechanism 60 can be used for buffering the battery string and transferring the battery string from the welding mechanism 50 to the light injection mechanism 70 so as to realize beat adjustment of the battery string between the light injection process and the welding process.

Referring to fig. 16, a schematic structural diagram of a battery string conveying mechanism according to an embodiment of the present application is shown, and as shown in fig. 16, the battery string conveying mechanism 60 may specifically include: a battery string suction member 601 and at least two parallel conveyor mechanisms (a first conveyor mechanism 604 and a second conveyor mechanism 605 as shown in fig. 16), the battery string suction member 601 can suction the battery string from the welding mechanism 50 to the conveyor mechanisms, which can be used to buffer the battery string and transfer the battery string to the light injection mechanism 70.

In a specific application, the battery string handling and conveying mechanism 60 may be used to adjust the beat of the whole equipment and keep the battery strings warm. Because the battery series welding process beat is fast, and the light injection process beat is slower, in order to avoid the equipment to appear blocking the string phenomenon and appear not reducing the beat of equipment, the battery string transport conveying mechanism 60 adopts two conveyor belt mechanisms parallelly connected mode to solve equipment beat problem, and specific steps are as follows:

First, the first conveyor belt 604 and the second conveyor belt 605 are arranged in parallel, and the battery string is transported at the same time. The first battery string conveying belt 502 may convey the battery string onto the conveying belt of the first conveying belt mechanism 604, and the battery string suction member 601 sucks the battery string on the first conveying belt mechanism 604. The eighth moving module 602 drives the battery string suction member 601 and the battery string to move upward in the vertical direction Z to reach the carrying position. The ninth moving module 603 moves in the second direction X to convey the battery string directly above the second conveyor 605, and the battery string is placed above the conveyor of the second conveyor 605 by the actions of the eighth moving module 602 and the battery string suction member 601.

Then, the battery string suction members 601 suck and convey the battery strings one string at a time to the second conveyor 605. The battery string suction member 601 normally sucks a battery string numbered 2m, which is an integer greater than or equal to 0, to the second conveyor 605 and sucks a battery string numbered 2m+1 to the first conveyor 604. For example, the conveyed battery strings are numbered from 1, and the battery string suction member 601 conveys only even-numbered battery strings to the second conveyor belt mechanism 605 at a time, and the odd-numbered battery strings are directly conveyed to the first conveyor belt mechanism 604 without being conveyed.

Optionally, a second heating module 606 may be provided on the conveyor belt mechanism, and the second heating module 606 may be used to heat the battery string on the conveyor belt mechanism. Specifically, when the battery string is transported on the first conveyor belt mechanism 604 and the second conveyor belt mechanism 605, the battery string can be always heated by the second heating module 606 on the first conveyor belt mechanism 604 and the second conveyor belt mechanism 605, so that the battery string is in a heat preservation state, and the heat preservation range of the second heating module 606 is 100-200 ℃.

Referring to fig. 17, a schematic structural diagram of a light injection mechanism according to an embodiment of the present application is shown, referring to fig. 18, a schematic structural diagram of a light injection mechanism shown in fig. 17 in a cross-section at a certain angle is shown, and referring to fig. 19, a schematic structural diagram of a light injection mechanism shown in fig. 17 in a cross-section at another angle is shown. As shown in fig. 17, the light injection mechanism 70 may specifically include: the battery string conveying component 701 is responsible for conveying the battery string so that the battery string completes the process of light injection.

Specifically, the light injection constant temperature chamber 703 is placed right above the battery string conveying components 701 and 702, the front section is a feed inlet, the rear section discharge outlet is connected with the cooling chamber 706 through the connecting pipe 705, the top of the light injection constant temperature chamber 703 is provided with light sources 7031 densely arranged in parallel, two sides of the light injection constant temperature chamber 703 are respectively provided with a first light source shield 7032 and a second light source shield 7033, so that the illumination of the light sources 7031 is maximally irradiated on the surface of the battery piece 1, and the intensity range of the light sources 7031 is 0.1-100 solar intensities.

Specifically, a light injection temperature control member 704 may be disposed within the light injection thermostatic chamber 703, and the light injection temperature control member 704 may be used to maintain the temperature inside the light injection thermostatic chamber 703 at a constant temperature. The temperature control is achieved by connecting a certain amount of gas to the inside of the light injection thermostatic chamber 703 through a pipe by the light injection temperature control part 704, and maintaining the temperature in the tank at a constant temperature by the circulation of the gas. The light injection temperature control member 704 can satisfy a temperature control range of 100 to 250 degrees celsius.

The cooling chamber 706 is used for cooling the battery string after light injection is completed, so that the temperature of the battery string is reduced to about 50 ℃. By introducing cooling water into the cooling chamber 706 and then introducing certain gas, the temperature of the introduced gas is reduced by the cooling water, and the cooled gas is blown to the surface of the battery string so as to achieve the purpose of cooling the battery string.

In practical application, the battery string is preheated before entering the light injection component, so that the battery string keeps a certain temperature, and the battery string can better receive light injection after entering the light injection component, thereby achieving the effect of improving the efficiency and the output power of the battery piece 1. Meanwhile, as no preheating time exists, the light injection beat is effectively improved. Because the light injection beat is slower than the battery string welding procedure beat, in order to satisfy the whole beat of equipment, the light injection part adopts the parallel transportation battery string mode to carry out the light injection to the battery string to this satisfies the equipment beat requirement.

Specifically, the light injection mechanism 70 is mainly used for performing a light injection process on the battery string, so as to improve the efficiency of the battery piece 1 and increase the output power of the assembly. The light injection means is composed of two battery string conveying mechanisms (a first battery string conveying means 701 and a second battery string conveying means 702), two light injection constant temperature chambers 703, a light injection temperature control means 704, a connection pipe 705, a battery string cooling chamber 706, and the like.

Illustratively, the first battery string conveying component 701 and the second battery string conveying component 702 may be arranged in parallel, and function to receive the battery strings conveyed by the first conveyor belt mechanism 604 and the second conveyor belt mechanism 605 in the previous stage. The first conveyor 604 transfers the battery string to the second battery string conveyor belt 7011 on the first battery string transfer member 701, and the second conveyor 605 transfers the battery string to the third battery string conveyor belt 7021 on the second battery string transfer member 702.

Specifically, the light injection thermostatic chamber 703 is used to perform light injection on the conveyed battery string, and each of the first battery string conveying member 701 and the second battery string conveying member 702 has one light injection thermostatic chamber 703. The light injection thermostatic chamber 703 is composed of a light source 7031, a first light source shield 7032, a second light source shield 7033 and a third light source 7031 shield, wherein the first light source shield 7032, the second light source shield 7033 and the third light source 7031 shield function to prevent leakage of light emitted by the light source 7031 so that all light can be irradiated on the battery string in the chamber. The third light source 7031 shield is notched in the battery string feed direction from above the conveyor belt, which is done to allow the battery string to enter the light injection thermostatic chamber 7033, and the notch width just meets the battery string entry.

Alternatively, the light source 7031 may be an LED light source, which has an intensity ranging from 10 to 100 solar intensities, in a closely parallel arrangement.

In practical applications, the light injection temperature control component 704 may be used to maintain the temperature inside the light injection thermostatic chamber 703 at a constant temperature, where the light injection temperature control component 704 is configured to introduce a certain amount of gas into the light injection thermostatic chamber 703 through the connection pipe 705, and stabilize the light injection thermostatic chamber 703 at a constant temperature through the circulation of the gas, and the temperature of the light injection temperature control component 704 is controlled in a range of 100-250 ℃.

In practical applications, the battery string cooling chamber 706 is used for cooling the battery string after light injection to reduce the temperature of the battery string to 45±5 ℃. The cooling coil component 7061 is filled with cooling water, then the battery string cooling chamber 706 is filled with gas with a certain flow rate, and the gas reaches the temperature of the battery string, which is taken away by the surface of the battery string, through the cooling of the cooling coil component 7061, so that the temperature of the battery string is reduced to 45+/-5 ℃. A cooling shield 7062 may also be provided on the battery string cooling chamber 706 to protect the battery string cooling chamber 706.

In summary, the battery string preparing apparatus according to the embodiment of the present application may specifically include the following advantages:

In the embodiment of the application, N battery pieces are equidistantly arranged along the horizontal first direction by the battery piece feeding mechanism; arranging N battery pieces at equal intervals along the vertical direction; acquiring N+1 welding strips and driving the welding strips to move so that each battery piece is positioned between two adjacent welding strips and the welding part of the battery piece, and realizing the cross arrangement of the battery pieces and the welding strips in the vertical direction; driving the welding strips and the battery pieces to alternately descend along the vertical direction so as to enable the battery pieces and the welding strips to be stacked to form an initial battery string; and performing welding operation on the initial battery string to obtain the battery string. Through with required N battery piece of battery cluster and N+1 weld area once prepare, and through battery piece transport mechanism with weld area transport mechanism once carries and stacks N battery piece and N+1 weld area, can effectually improve battery cluster and pile up efficiency, and then, improve battery cluster's preparation efficiency.

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

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery string manufacturing method, characterized in that the battery string manufacturing method comprises:

arranging N battery pieces at equal intervals along the vertical direction;

2. The method of manufacturing a battery string according to claim 1, wherein the step of disposing N of the battery pieces at equal intervals in the vertical direction comprises:

3. The method of manufacturing a battery string according to claim 2, wherein the step of obtaining n+1 solder strips and driving the solder strips to move so that each of the battery pieces is located between two adjacent solder strips and a welded portion of the battery piece, and achieving a cross arrangement of the battery pieces and the solder strips in a vertical direction, comprises

4. The method of manufacturing a battery string according to claim 3, wherein the driving the solder strips to move so that each of the battery pieces is located between two adjacent solder strips and the welded portion of the battery piece, the step of achieving the cross arrangement of the battery pieces and the solder strips in the vertical direction, comprises:

driving N+1 welding strips to gather along the first direction;

5. The method of manufacturing a battery string according to claim 1, wherein after the step of performing a welding operation on the initial battery string to obtain the battery string, further comprising:

and performing light injection treatment on the battery string.

6. The method of claim 1, wherein the step of performing a welding operation on the initial battery string to obtain the battery string is preceded by the step of:

placing a plurality of compaction tools on the initial battery string; and

And carrying out the plurality of pressing tools away from the battery strings.

7. A battery string preparing apparatus, characterized in that the battery string preparing apparatus comprises: the device comprises a battery piece feeding mechanism, a battery piece conveying mechanism, a welding strip conveying mechanism and a welding mechanism; the battery piece feeding mechanism is used for equidistantly and alternately arranging N battery pieces along the first direction, wherein N is an integer greater than or equal to 2;

8. The battery string preparation device of claim 7, further comprising: and the light injection mechanism is arranged on one side, far away from the battery piece conveying mechanism, of the welding mechanism and is used for carrying out light injection treatment on the battery strings.

9. The battery string preparation device of claim 8, further comprising: the battery string conveying mechanism is arranged between the welding mechanism and the light injection mechanism and is used for buffering the battery string and transferring the battery string from the welding mechanism to the light injection mechanism.

10. The battery string preparing apparatus according to claim 9, wherein the battery string handling and conveying mechanism includes: the battery string sucking component sucks the battery string from the welding mechanism to the conveying belt mechanism, and the conveying belt mechanism is used for buffering the battery string and transferring the battery string to the light injection mechanism.

11. The battery string preparation apparatus of claim 10, wherein the at least two parallel conveyor mechanisms comprise a first conveyor mechanism and a second conveyor mechanism; the battery string sucking component is used for sucking the battery string with the number of 2m to the second conveying belt mechanism and sucking the battery string with the number of 2m+1 to the first conveying belt mechanism, wherein m is an integer greater than or equal to 0.

12. The battery string preparation apparatus according to claim 11, wherein the light injection means comprises: two battery string conveying mechanisms arranged in parallel and two light injection thermostatic chambers arranged in parallel, wherein one battery string conveying mechanism corresponds to one light injection thermostatic chamber; wherein,

13. The battery string preparation device according to claim 10, wherein the conveyor belt mechanism is provided with a second heating module for heating the battery string on the conveyor belt mechanism.

14. The battery string preparation device of claim 7, further comprising: the compressing tool carrying mechanism is arranged adjacent to the welding mechanism and is used for placing a plurality of compressing tools on the battery string or removing a plurality of compressing tools from the battery string.

15. The battery string preparation apparatus of claim 14, wherein the compaction tooling handling mechanism comprises: the device comprises a second base, a compaction tool feeding part, a compaction tool discharging part and a compaction tool conveying part; wherein,

the compaction tool feeding part is arranged on the second base;

16. The battery string preparation device of claim 7, wherein the battery sheet feeding mechanism comprises: the battery piece moving carrier, the feeding robot and the positioning camera; wherein,

17. The battery string preparing apparatus according to claim 7, wherein the battery piece handling mechanism comprises: the battery piece sucking component, the first transfer platform and the first base; wherein,

the battery piece absorbing component is movably connected to the first transfer platform, the first transfer platform is movably connected to the first base, the battery piece absorbing component is used for absorbing the battery pieces on the battery piece feeding mechanism, the distance between the battery piece absorbing components can be adjusted, and the first transfer platform is used for driving the battery piece absorbing component to move on the first base; the battery piece absorbing component comprises a battery piece absorbing piece, a first moving module, a second moving module and a first servo motor assembly, wherein the battery piece absorbing piece is connected to the first moving module and can move on the first moving module along a second direction, and the second direction is a direction perpendicular to the horizontal first direction on a horizontal plane; the first movable module is movably connected with the second movable module and can move on the second movable module along the vertical direction.

18. The battery string preparing apparatus according to claim 7, wherein the solder-ribbon handling mechanism comprises: a substrate and a solder tape carrying member; wherein,

19. The battery string preparation apparatus of claim 18, wherein the solder strip handling mechanism further comprises: the welding strip carrier component is provided with a welding strip clamping piece and a welding strip cutting piece, the welding strip clamping piece is used for clamping the whole welding strip, and the welding strip cutting piece is used for cutting the whole welding strip into N+1 welding strips.

20. The battery string preparing apparatus according to claim 7, wherein the welding mechanism comprises: welding the lamp box component, the first battery string conveying belt and the first heating module; wherein,