CN219768384U - Membrane strip preparation mechanism and series welding machine - Google Patents

Abstract

The application provides a film strip preparation mechanism and a series welding machine, which comprises a film strip feeding mechanism, a cutting bearing platform, a film strip cutting mechanism, a film strip carrying mechanism and a film strip spacing mechanism, wherein: the film strip feeding mechanism is arranged at the front channel of the cutting bearing platform and provides a film strip to be cut for the cutting bearing platform along the first horizontal direction; the cutting bearing platform is used for positioning the film strip provided by the film strip feeding mechanism; the film strip cutting mechanism is used for cutting the film strips on the cutting bearing platform along a second horizontal direction perpendicular to the first horizontal direction so as to obtain a plurality of film strips; the film strip conveying mechanism is used for picking up a plurality of film strips from the cutting bearing platform and conveying the picked up film strips to the film strip spacing mechanism; the film strip spacing mechanism is used for spacing a plurality of film strips so that the spacing between the film strips is a first preset value. According to the film strip preparation mechanism, a plurality of film strips can be obtained after each cutting action is performed, so that the film strip preparation efficiency is improved.

Description

Membrane strip preparation mechanism and series welding machine

Technical Field

The application relates to the field of battery production, in particular to a film strip preparation mechanism and a stringer.

Background

IBC (Interdigitated Back Contact) battery is a full back electrode contact battery, and adopts a technology that both positive and negative electrode metal contacts of a solar battery are positioned on the back of a battery piece. Because the front of the battery is not provided with grid lines, the light receiving area of the battery piece is greatly improved, and the power generation efficiency is further improved.

In the IBC battery string, the welding strips are paved on the back surfaces of the battery pieces, two adjacent battery pieces are connected through a group of welding strips, and the welding strips exposed at the space between the adjacent two battery pieces and the welding strips at the positions of the string head and the string tail can be seen from the front surface of the battery string. For reasons such as component aesthetic property, lay the membrane strip in order to shelter from the welding strip in battery string cloth string in-process at piece interval department and cluster head, cluster tail department generally, the membrane strip is located between battery piece and the welding strip, and the membrane strip can bond on the back of battery piece and shelter from the welding strip after heating.

A plurality of membrane strips are needed for an IBC battery string, and the existing membrane strip preparation mechanism can only realize the preparation of a single membrane strip at a time, so that the preparation efficiency is low, and the cloth string efficiency of the IBC battery string is not improved.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a membrane strip preparation mechanism, which comprises the following specific technical scheme:

The utility model provides a membrane strip preparation mechanism, includes membrane area feed mechanism, cuts loading platform, membrane area and cuts mechanism, membrane strip transport mechanism and membrane strip separation distance mechanism, wherein:

the film strip feeding mechanism is arranged at the front channel of the cutting bearing platform and is used for providing the film strip to be cut for the cutting bearing platform along the first horizontal direction;

the cutting bearing platform is used for positioning the film strip provided by the film strip feeding mechanism;

the film strip cutting mechanism is used for cutting the film strips on the cutting bearing platform along a second horizontal direction perpendicular to the first horizontal direction so as to obtain a plurality of film strips;

the film strip conveying mechanism is used for picking up a plurality of film strips from the cutting bearing platform and conveying the picked up film strips to the film strip spacing mechanism;

the film strip spacing mechanism is used for spacing the plurality of film strips so that the spacing between the plurality of film strips is a first preset value.

Therefore, the membrane strip preparation mechanism can obtain a plurality of membrane strips after each cutting action, so that the membrane strip preparation efficiency is improved; the film strip spacing mechanism can be used for spacing a plurality of cut film strips, when the film strip spacing mechanism is used, a first preset value can be set as the distance between two adjacent film strips in a series of IBC battery strings, so that the film strips after spacing can be directly carried at one time and directly paved, the film strip spacing is not required to be adjusted again, and the paving efficiency of the battery strings is improved; through setting up and cutting load-bearing platform and membrane strip spacing mechanism, realized that the membrane strip cuts and membrane strip divides the independence between the distance, when membrane strip spacing mechanism carries out the distance to last group's membrane strip, cut load-bearing platform and membrane area and cut the mechanism and can carry out the cutting of next group's membrane strip, further improve membrane strip preparation efficiency.

In some embodiments, the film strip loading mechanism comprises a film strip roll, a film strip traction mechanism, and a film strip hold-down mechanism, wherein: the film belt traction mechanism is used for pulling out the film belt on the film belt material roll along the first horizontal direction and laying the film belt on the cutting bearing platform; the film strip pressing mechanism is arranged between the cutting bearing platform and the film strip material roll and is used for pressing the pulled film strip.

By arranging the film strip material roll, the film strip to be cut is fed; the film tape on the film tape material roll can be pulled out along the first horizontal direction by the traction of the film tape traction mechanism and laid on the cutting bearing platform; the film belt is pressed by the film belt pressing mechanism, so that the film belt is prevented from shifting after the film belt is loosened by the film belt traction mechanism, and meanwhile, the film belt is convenient for the film belt traction mechanism to clamp and take the film belt from the film belt pressing mechanism again, and the film belt is pulled out.

In some embodiments, the film strip traction mechanism comprises a translation drive mechanism, a first lift drive mechanism, and a gripping mechanism, wherein: the clamping mechanism is connected to the driving end of the first lifting driving mechanism, the first lifting driving mechanism is connected to the driving end of the translation driving mechanism, the first lifting driving mechanism is used for driving the clamping mechanism to lift, and the translation driving mechanism is used for driving the clamping mechanism to reciprocate in the first horizontal direction; the clamping mechanism is used for clamping the end part of the film belt from the film belt pressing mechanism and releasing the film belt after the film belt is pulled out to a preset position.

The clamping mechanism can reciprocate between the film strip pressing mechanism and the cutting bearing platform through the matched driving of the translation driving mechanism and the first lifting driving mechanism, so that the end part of the film strip is clamped from the film strip pressing mechanism, the film strip is pulled to a preset position and then released, and the film strip with the preset length is paved on the cutting bearing platform.

In some embodiments, the gripping mechanism comprises a traction floor, a flip drive mechanism, and a traction cleat, wherein: the traction bottom plate and the turnover driving mechanism are connected to the driving end of the first lifting driving mechanism, and the traction clamping plate is connected to the driving end of the turnover driving mechanism and is positioned above the traction bottom plate; the overturning driving mechanism is used for driving the traction clamping plate to overturn towards or away from the traction bottom plate so as to clamp or release the film strip.

The clamping mechanism is simple in structure, and the traction clamping plate is driven to overturn towards the traction bottom plate or away from the traction bottom plate through the overturning driving mechanism, so that clamping or releasing of the membrane belt can be implemented.

In some embodiments, the film strip compression mechanism comprises a compression table, a platen drive mechanism, and a film strip carrier, wherein: the pressing plate is arranged above the pressure bearing table and connected with the driving end of the pressing plate driving mechanism, and the pressing plate driving mechanism is used for driving the pressing plate to lift and compress the film strip on the pressure bearing table when the pressing plate descends; the membrane strip bearing piece is connected to the bearing platform and is close to the cutting bearing platform, the horizontal distance between the membrane strip bearing piece and the cutting bearing platform is adjustable, the membrane strip bearing piece is used for bearing the end part of the membrane strip, and the membrane strip traction mechanism clamps the end part of the membrane strip from the membrane strip bearing piece.

The film belt pressing mechanism realizes the pressing and releasing of the film belt through the matching of the pressure bearing table and the pressing plate; and through setting up the membrane area carrier in the pressure-bearing platform towards one side of cutting load-bearing platform, then realized the bearing to the tip of membrane area, prevent the sagging of the tip of membrane area, ensure that membrane area traction mechanism can press from both sides smoothly to get the tip of membrane area.

In some embodiments, the film strip preparation mechanism further comprises a second lifting driving mechanism, the cutting bearing platform is connected to the driving end of the second lifting driving mechanism, and the second lifting driving mechanism is used for driving the cutting bearing platform to lift; the film strip cutting mechanism comprises a plurality of cutters or a plurality of hot cutting wires, the cutters or the hot cutting wires are in one-to-one correspondence with the cutting slits, and the cutters or the hot cutting wires cut the film strips on the cutting bearing platform along the corresponding cutting slits; and the cutting bearing platform is also provided with an adsorption hole for positioning the membrane belt.

The second lifting driving mechanism is arranged to drive the cutting bearing platform to lift, so that the film strip feeding mechanism can conveniently provide a film strip for the cutting bearing platform; the film strip cutting mechanism can cut the film strip along the cutting slits by arranging a plurality of cutting slits extending along the second horizontal direction on the cutting bearing platform, so that the film strip on the cutting bearing platform is cut into a plurality of film strips with preset widths; through set up the absorption hole on cutting the loading platform, realized the absorption location to the membrane area, ensure that membrane area cutting mechanism carries out smoothly to the cutting of membrane area.

In some embodiments, the membrane strip handling mechanism comprises a movement mechanism and a handling assembly, wherein: the conveying assembly is connected to the driving end of the moving mechanism, and the moving mechanism is used for driving the conveying assembly to move and switch between the cutting bearing platform and the film strip distance separating mechanism, so that the conveying assembly conveys the plurality of film strips from the cutting bearing platform to the film strip distance separating mechanism; the carrying assembly is provided with a plurality of rows of adsorption holes, and each row of adsorption holes adsorbs a membrane strip.

The moving mechanism drives the carrying assembly to move and switch between the cutting bearing platform and the film strip distance separating mechanism, so that the carrying of a plurality of film strips is realized; and through set up the multirow and adsorb the hole on handling assembly for handling assembly can absorb many membrane strips simultaneously, in order to realize carrying many membrane strips simultaneously.

In some embodiments, the handling assembly includes a first mounting bracket, a first standoff driving assembly, and a plurality of suction bars, each suction bar having a row of suction holes therein: the first mounting bracket is connected to the driving end of the moving mechanism, and the first spacing driving assembly is arranged on the first mounting bracket; the adsorption strips are arranged side by side and are respectively connected to the first mounting bracket in a sliding manner; the first separation driving assembly is used for driving the plurality of adsorption strips to be close to each other, so that each adsorption strip is used for adsorbing and cutting one membrane strip on the bearing platform correspondingly; the first spacing driving assembly is further used for driving the plurality of adsorption strips to be far away from each other, so that the spacing between the adsorbed plurality of membrane strips is a second preset value, and the second preset value is smaller than the first preset value.

Through setting up the transport subassembly for the transport subassembly can be implemented the absorption and the transport to many membrane strips in step, in addition, and transport subassembly can be implemented the presorting to many membrane strips in the handling, makes the interval between many membrane strips be the second predetermined value, through carrying out presorting to many membrane strips in advance, can initially pull apart the distance between each membrane strip, makes membrane strip spacing mechanism can have great size design space, the structural design and the manufacturing of membrane strip spacing mechanism of being convenient for more.

In some embodiments, the first mounting bracket includes a frame and a guide disposed on the frame along a first horizontal direction; each adsorption strip is connected to the guide piece in a sliding manner, one adsorption strip at the first end is connected with the frame, and two adjacent adsorption strips are connected through a spacing connecting piece, and the adsorption strip at the second end is connected with the driving end of the first spacing driving assembly; or, among the plurality of adsorption strips, the adsorption strip at the first end is fixed on the frame, the rest adsorption strips are all connected on the guide piece in a sliding way, the two adjacent adsorption strips are all connected through the spacing connecting piece, and the adsorption strip at the second end is connected with the driving end of the first spacing driving assembly; one of the two adjacent adsorption strips is fixedly connected with one end of the spacing connecting piece, and the other adsorption strip is connected between the first limiting end and the second limiting end of the spacing connecting piece in a sliding manner; the first spacing driving assembly is used for driving the adsorption strips at the second end to reciprocate along the first horizontal direction so as to realize the reciprocating movement of each adsorption strip between the first limiting end and the second limiting end of the corresponding spacing connecting piece; when the adsorption strips move to the first limiting end, the adsorption strips are close to each other; when the adsorption strips move to the second limiting end, the adsorption strips are far away from each other.

Through setting up mounting means and the connected mode of each adsorption strip, realized, only drive an adsorption strip through first minute distance drive assembly and follow first horizontal direction reciprocating motion, can drive all adsorption strips and be close to each other or separate.

In some embodiments, the first split drive assembly comprises a split cylinder, a connecting plate, a split tie rod, a pin, and a spring, wherein: the separation pull rod is connected to the guide piece in a sliding way and is close to the adsorption strip at the second end; the distance separating cylinder is arranged on the frame, one end of the connecting plate is connected to the telescopic rod of the distance separating cylinder, and the other end of the connecting plate is connected to the distance separating pull rod; one end of the pin shaft is provided with a limiting step, and the other end of the pin shaft penetrates through the distance-dividing pull rod and is then connected to the adsorption strip at the second end; the spring is sleeved on the pin shaft, one end of the spring is abutted on the spacing pull rod, and the other end of the spring is abutted on the limiting step; the distance dividing cylinder is used for driving the distance dividing pull rod to reciprocate along the first horizontal direction.

Through setting up the branch distance pull rod, the branch distance cylinder is not directly connected with the adsorption strip, can prevent that the too big adsorption strip that pulls out of branch distance cylinder stroke, after the adsorption strip divides apart from target in place, if the branch distance cylinder still has the stroke to walk, then the branch distance cylinder drives branch distance pull rod along round pin axle removal compression spring to digest the surplus stroke of branch distance cylinder.

In some embodiments, the membrane strip spacing mechanism comprises a second mounting bracket, a second spacing drive assembly, and a plurality of spacing stages, wherein: the plurality of separation platforms are connected to the second mounting bracket in a side-by-side sliding manner, and each separation platform is used for bearing one film strip; the second spacing driving component is used for driving the plurality of spacing tables to slide apart so that the spacing between the plurality of membrane strips is a first preset value.

The second spacing driving assembly drives the plurality of spacing tables to slide and separate along the second mounting bracket, so that the spacing of the plurality of membrane strips borne on the plurality of spacing tables is realized, and the spacing between the plurality of membrane strips is a first preset value.

In some embodiments, the second pitch drive assembly comprises a pulling portion and a pitch belt, wherein: the traction part is arranged on the second mounting bracket; the first ends of the spacing belts are connected to the second mounting bracket, and the plurality of spacing tables are connected to the spacing belts, wherein the lengths of the spacing belts between every two adjacent spacing tables are equal; the driving end of the traction part is connected with the spacing table close to the second end of the spacing belt, and the traction part is used for driving the spacing table close to the second end of the spacing belt to slide away from the first end of the spacing belt so as to tighten the spacing belt; when the spacing belt is tightened, the spacing between the membrane strips borne on the spacing tables is a first preset value.

A second spacing driving assembly with simple structure is provided, the spacing belt is only required to be pulled and tightened through a pulling part, the spacing of a plurality of spacing tables connected with the spacing belt can be implemented, and finally, the spacing between a plurality of film strips borne on the plurality of spacing tables is adjusted to be a first preset value.

The application also provides a series welding machine, which comprises the film strip preparation mechanism, a welding strip feeding mechanism, a battery piece feeding mechanism, a carrying mechanism, a conveying mechanism and a series connection mechanism, wherein:

the film strip preparation mechanism is used for providing film strips, the welding strip feeding mechanism is used for providing welding strip groups, the battery piece feeding mechanism is used for providing battery pieces, and the battery pieces are IBC battery pieces;

the carrying mechanism is used for laying N+1 membrane strips provided by the membrane strip preparation mechanism, N+1 welding strip groups provided by the welding strip feeding mechanism and N battery pieces provided by the battery piece feeding mechanism on the conveying mechanism according to a preset cloth string rule;

the conveying mechanism conveys the laid film strips, the welding strips and the battery pieces to the series connection mechanism, and the series connection mechanism is used for welding the film strips, the welding strips and the battery pieces into a battery string.

Through the cooperation of membrane strip preparation mechanism, welding area feeding mechanism, battery piece feeding mechanism, transport mechanism, conveying mechanism and concatenate the mechanism, the automatic weld of IBC battery piece becomes the cluster that the series welding machine has realized.

In some embodiments, the stringing rule is: laying N+1 group welding strips and N+1 membrane strips, wherein each membrane strip is stacked above the corresponding welding strip group; stacking N battery pieces on the N+1 assembly welding strips with the back faces facing downwards, wherein one battery piece is stacked between two adjacent membrane strips; alternatively, the string rule is: the back sides of the N battery pieces are upwards laid on the conveying mechanism; and laying N+1 membrane strips and N+1 assembly welding strips, wherein one membrane strip is respectively laid between every two adjacent battery pieces, outside of the 1 st battery piece and outside of the N th battery piece, and the N+1 assembly welding strips are laid above the N battery pieces and the N+1 membrane strips.

Two possible string patterns are provided, both of which can implement strings for IBC battery strings.

Drawings

FIG. 1 is a schematic view of a film strip manufacturing mechanism according to an embodiment of the present application;

FIG. 2 is a schematic view of a film strip manufacturing mechanism according to an embodiment of the present application in another view;

FIG. 3 is a schematic structural view of a film strip preparing mechanism without components such as a film strip cutting mechanism and a film strip spacing mechanism in an embodiment of the present application;

FIG. 4 is a partial schematic view of the structure of FIG. 3;

FIG. 5 is a schematic view of a film tape pulling mechanism according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a film strip handling mechanism according to an embodiment of the present application;

FIG. 7 is a schematic view of the overall structure of a handling assembly according to an embodiment of the present application;

FIG. 8 is a schematic bottom view of a handling assembly according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a film tape cutting mechanism according to an embodiment of the present application;

FIG. 10 is a schematic structural view of a film strip spacing mechanism according to an embodiment of the present application;

FIG. 11 is a schematic view of a connection structure between a spacing belt and a spacing table according to an embodiment of the present application;

FIG. 12 is a schematic illustration of a laid down IBC battery string in an embodiment of the application;

fig. 1 to 12 include:

a film strip roll 1;

film tape traction mechanism 2:

a translation driving mechanism 21;

a first lift driving mechanism 22;

gripping mechanism 23: traction floor 231, flip drive mechanism 232, traction clamp 233;

film tape hold-down mechanism 3:

a pressure bearing table 31, a pressure plate 32, a pressure plate driving mechanism 33, a film tape carrier 34 and a waist hole 35;

cutting a bearing platform 4: the avoidance groove 41; a second lift driving mechanism 42;

film strip cutting mechanism 5:

a cutting drive mechanism 51;

cutting assembly 52: a rotary drive assembly 521, a rotary arbor 522, and a cutter 523;

a film tape pressing plate 53;

Film strip handling mechanism 6:

a moving mechanism 61;

handling assembly 62: the first mounting bracket 621, the first spacing driving component 622, the adsorption strip 623, the frame 624, the guide element 625, the spacing connecting element 626, the spacing cylinder 627, the connecting plate 628, the spacing pull rod 629, the pin shaft 6210 and the spring 6211;

film strip separation mechanism 7:

a second mounting bracket 71;

second pitch drive assembly 72: a pulling part 721, a spacing belt 722;

a separation stage 73;

battery sheet 100, film strip 200, and solder strip 300.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1 and 2, the film strip preparation mechanism provided by the application comprises a film strip feeding mechanism, a cutting bearing platform 4, a film strip cutting mechanism 5, a film strip carrying mechanism 6 and a film strip spacing mechanism 7, wherein:

the film strip feeding mechanism is arranged in front of the cutting and bearing platform 4 and is used for providing the film strip to be cut for the cutting and bearing platform 4 along the first horizontal direction (such as the X-axis direction in fig. 1).

The cutting and carrying platform 4 is used for positioning the film strip provided by the film strip feeding mechanism.

The film strip cutting mechanism 5 is used for cutting the film strip on the cutting carrier platform 4 along a second horizontal direction (such as the Y-axis direction in fig. 1) perpendicular to the first horizontal direction, so as to obtain a plurality of film strips.

The film strip conveying mechanism 6 is used for picking up a plurality of film strips from the cutting bearing platform 4 and conveying the picked up film strips to the film strip spacing mechanism 7.

The film strip spacing mechanism 7 is used for spacing the plurality of film strips so that the spacing between the plurality of film strips is a first preset value.

Therefore, the film strip preparation mechanism can obtain a plurality of film strips after each cutting action, so that the film strip preparation efficiency is improved. When the method is used, the number of the membrane strips obtained by cutting each time can be set to be the number of the membrane strips required by one string of IBC battery strings, and then the membrane strip laying requirement of one string of battery strings can be met by cutting once.

The membrane strip spacing mechanism 7 can carry out spacing to a plurality of membrane strips that cut and obtain, and during the use, can set up first preset value as the distance between two adjacent membrane strips in a series of IBC battery cluster, then many membrane strips after the spacing can direct disposable transport and directly lay, need not to adjust membrane strip interval again, improves the laying efficiency of battery cluster. In addition, through setting up and cutting loading platform 4 and membrane strip spacing mechanism 7, realized that the membrane strip cuts and membrane strip divides the independence between the distance, when membrane strip spacing mechanism 7 carries out the distance to last group's membrane strip, cut loading platform 4 and membrane strip and cut mechanism 5 and can carry out the cutting of next group's membrane strip, further improve membrane strip preparation efficiency.

With continued reference to fig. 1, the film strip feeding mechanism includes a film strip roll 1, a film strip traction mechanism 2, and a film strip hold-down mechanism 3, wherein: the film strip traction mechanism 2 is used for pulling out the film strip on the film strip material roll 1 along the first horizontal direction and laying the film strip on the cutting bearing platform 4. The film strip pressing mechanism 3 is arranged between the cutting bearing platform 4 and the film strip material roll 1, and the film strip pressing mechanism 3 is used for pressing the pulled film strip.

The feeding process of the film strip feeding mechanism is as follows:

after the film strip roll 1 is installed, the end part of the film strip released by the film strip roll 1 is pulled into the film strip pressing mechanism 3, and the film strip pressing mechanism 3 presses the end part of the film strip.

Then, the film tape pulling mechanism 2 clips the end of the film tape from the film tape pressing mechanism 3, and at the same time, the film tape pressing mechanism 3 releases the film tape. The film strip traction mechanism 2 pulls the film strip to be cut with a preset length to the position above the cutting bearing platform 4, the film strip pressing mechanism 3 presses the film strip again, the film strip traction mechanism 2 releases the film strip, and the cutting bearing platform 4 positions the film strip to be cut.

Subsequently, the film tape cutting mechanism 5 cuts the film tape to be cut positioned on the cutting carrier stage 4 into a plurality of film strips. The end of the cut film tape is held by the film tape holding mechanism 3.

After the film strip conveying mechanism conveys the plurality of film strips, the film strip traction mechanism 2 clamps the end parts of the film strips from the film strip pressing mechanism 3 again, and cutting of the next group of film strips is started.

As shown in fig. 3 and 5, the film tape pulling mechanism 2 optionally includes a translation driving mechanism 21, a first lifting driving mechanism 22, and a gripping mechanism 23, wherein: the clamping mechanism 23 is connected to the driving end 23 of the first lifting driving mechanism, the first lifting driving mechanism 23 is connected to the driving end of the translation driving mechanism 22, the first lifting driving mechanism 22 is used for driving the clamping mechanism 23 to lift, and the translation driving mechanism 21 is used for driving the clamping mechanism 23 to reciprocate in the first horizontal direction.

Under the cooperation drive of the translation driving mechanism 21 and the first lifting driving mechanism 22, the clamping mechanism 23 clamps the end part of the film strip from the film strip compressing mechanism 3, and pulls the film strip to a preset position, then releases the film strip, finally enables the film strip to fall onto the cutting bearing platform 4 and is positioned by the cutting bearing platform 4.

The translational driving mechanism 21 and the first elevating driving mechanism 22 may be any of various conventional linear driving mechanisms, for example, a linear driving mechanism comprising a motor, a timing belt, and a slide rail pair.

As shown in fig. 5, the gripping mechanism 23 may include a traction base 231, a flip drive mechanism 232, and a traction clamp 233, where: the traction base plate 231 and the turnover driving mechanism 232 are both connected to the driving end of the first lifting driving mechanism 22, and the traction clamping plate 233 is connected to the driving end of the turnover driving mechanism 232 and is located above the traction base plate 231. The flip drive mechanism 232 is used to drive the traction splint 233 to flip toward or away from the traction deck 231 to pinch or release the membrane strip.

It can be seen that the clamping mechanism 23 can perform clamping or releasing of the film strip by driving the traction clamping plate 233 to flip toward the traction bottom plate 233 or to flip away from the traction bottom plate 231 by the flip driving mechanism 232.

Of course, other more complex gripping mechanisms may be used to effect gripping or releasing of multiple film strips, such as in alternative embodiments where the gripping mechanism 23 includes a plurality of jaw assemblies disposed side-by-side, the plurality of jaw assemblies collectively gripping or releasing the film strips.

As shown in fig. 4, the film tape pressing mechanism 3 may alternatively include a pressure receiving table 31, a pressing plate 32, and a pressing plate driving mechanism 33, wherein: the pressing plate 32 is disposed above the pressing table 31 and connected to a driving end of the pressing plate driving mechanism 33, and the pressing plate driving mechanism 33 is used for driving the pressing plate 31 to lift. The film tape passes between the carrying table 31 and the pressing plate 32, and when the pressing plate 32 is driven to descend by the pressing plate driving mechanism 33, the pressing plate 32 presses the film tape against the carrying table 31, and when the pressing plate 32 is driven to ascend by the pressing plate driving mechanism 33, the pressing plate 32 releases the film tape.

The film strip hold-down mechanism 3 further comprises a film strip carrier 34 connected to the pressure table 31 and adjacent to the cutting carrier platform 4. The film tape carrier 34 is used for supporting the end of the film tape, preventing the end of the film tape from sagging, and finally ensuring that the film tape traction mechanism 2 can smoothly clamp the end of the film tape from the film tape carrier 34.

Alternatively, the horizontal distance between the film tape carrier 34 and the cutting carrier platform 4 may be adjustable, so that the amount of film tape end that is gripped by the film tape pulling mechanism 2 may be adjusted. Optionally, the film strip carrier 34 includes a carrier plate, one side of the carrier plate is provided with a waist hole 35, the carrier plate is connected with the pressure-bearing platform 31 through a screw installed in the waist hole 35, and the horizontal distance between the carrier plate and the cutting carrier platform 4 can be adjusted by adjusting the position of the screw in the waist hole 35.

Optionally, the film strip preparation mechanism in the embodiment of the present application further includes a second lifting driving mechanism 42, where the cutting carrier platform 4 is connected to a driving end of the second lifting driving mechanism 42, and the second lifting driving mechanism 42 is used to drive the cutting carrier platform 4 to lift.

Through setting up second lift actuating mechanism 42, realized cutting load-bearing platform 4 and cut the high position and dodge the lift switching between the low position, when cutting load-bearing platform 4 descends to dodge the low position, it can implement the dodge to membrane area traction mechanism 2 for membrane area traction mechanism 2 can be smoothly from membrane area hold-down mechanism 3 clamp the tip of getting the membrane area. When the cutting carrier platform 4 is lifted to a cutting high position, the carrier platform can carry out the carrying and positioning of the film strip to be cut which is pulled in place, and the cutting of the film strip is completed by matching with the film strip cutting mechanism 5.

Optionally, the cutting and carrying platform 4, the film strip traction mechanism 2, the film strip pressing mechanism 3 and the film strip cutting mechanism 5 implement traction and cutting of the film strip according to the following process:

first, the cutting carrier platform 4 is driven by the second lifting driving mechanism 42 to descend from the initial cutting high position to the avoidance low position. The gripping mechanism 23 of the film web pulling mechanism 2 moves to the film web carrier 34 and grips the end of the film web, after which the film web pressing mechanism 3 releases the film web.

Then, the gripping mechanism 23 is lifted to avoid the cutting carrier platform 4, and the cutting carrier platform 4 is lifted to a cutting high position under the driving of the second lifting driving mechanism 42.

The clamping mechanism 23 pulls the film strip until the film strip to be cut with a preset length is pulled to a preset position, and after the film strip pressing mechanism 3 presses the film strip again, the clamping mechanism 23 releases the film strip, so that the film strip to be cut falls onto the bearing platform 4 and is positioned by the bearing platform 4.

Finally, the film strip to be cut positioned on the cutting carrier platform 4 is cut into a plurality of film strips by the film strip cutting mechanism 5.

Optionally, as shown in fig. 4, the cutting carrier platform 4 is provided with a plurality of cutting slits 41 extending along the second horizontal direction, the film strip cutting mechanism 5 includes a plurality of cutters or a plurality of thermal cutting wires, the cutters or the thermal cutting wires are in one-to-one correspondence with the cutting slits 41, and the cutters or the thermal cutting wires cut the film strips on the cutting carrier platform 41 along the corresponding cutting slits 41, so as to cut the film strips into a plurality of film strips, and the cutting carrier platform 4 is further provided with adsorption holes for adsorbing the film strips to position the film strips.

As shown in fig. 6, the film strip handling mechanism 6 includes a moving mechanism 61 and a handling assembly 62, wherein: the carrying assembly 62 is connected to a driving end of the moving mechanism 61, and the moving mechanism 61 is used for driving the carrying assembly 62 to move and switch between the cutting and carrying platform 4 and the film strip distance separating mechanism 7, so that the carrying assembly 62 carries a plurality of film strips from the cutting and carrying platform 4 to the film strip distance separating mechanism 7. The carrying assembly 62 is provided with a plurality of rows of adsorption holes, and each row of adsorption holes is used for correspondingly adsorbing one membrane strip.

As shown in fig. 7 and 8, optionally, the handling component 62 includes a first mounting bracket 621, a first spacing driving component 622, and a plurality of adsorbing strips 623, where each adsorbing strip 623 is provided with a row of adsorbing holes, and each adsorbing strip 623 is used to adsorb a film strip through the row of adsorbing holes thereon. The first mounting bracket 621 is connected to the driving end of the moving mechanism 61, and the first pitch drive assembly 622 is provided on the first mounting bracket 621. The plurality of suction bars 623 are disposed side by side and slidably coupled to the first mounting bracket 621, respectively.

The gaps between the plurality of cut film strips on the cutting carrier platform 4 are smaller, so that the first separation driving component 622 drives the plurality of adsorption strips 623 to approach each other before picking up the plurality of film strips from the cutting carrier platform 4, so that each adsorption strip can adsorb one film strip on the cutting carrier platform 4 correspondingly. During the handling process, the first separation driving component 622 drives the plurality of adsorbing bars 623 away from each other, so that the spacing between the adsorbed plurality of membrane bars is adjusted to a second predetermined value, and the second predetermined value is smaller than the first predetermined value.

It can be seen that, through setting up handling subassembly 62 for handling subassembly 62 can carry out the absorption and the transport to many membrane strips in step, in addition, handling subassembly 62 can carry out the presorting to many membrane strips in the handling, thereby makes the interval between many membrane strips be adjusted to the second predetermined value. Therefore, the distances among the membrane strips can be initially pulled through pre-separating the membrane strips in advance, so that the membrane strip separating mechanism 7 can have a larger size design space, and the structural design and the manufacturing of the membrane strip separating mechanism 7 are more convenient.

With continued reference to fig. 7 and 8, the first mounting bracket 61 includes a frame 624 and a guide 625 disposed on the frame 624 along a first horizontal direction, where the guide 625 may be, for example, two sets of guide rods disposed opposite to each other in the drawing, or may be other structures such as a guide rail.

In the embodiment of fig. 7 and 8, among the plurality of adsorbing bars 623, the adsorbing bar located at a first end (e.g., right end) is fixed on the frame 624, the remaining adsorbing bars 623 are all slidably connected to the guiding element 625, two adjacent adsorbing bars 623 are all connected through the spacing connecting element 626, and the adsorbing bar 623 located at a second end (e.g., left end) is connected to the driving end of the first spacing driving element 622.

In other alternative embodiments, each of the adsorption bars 623 may be slidably connected to the guide member 625, where, among the adsorption bars 623, an adsorption bar 623 located at a first end (e.g., a right end) is connected to the frame 624, and two adjacent adsorption bars 623 are connected to each other by a spacing connection member 626, and an adsorption bar 623 located at a second end (e.g., a left end) is connected to the driving end of the first spacing driving component 622.

Of the two adjacent suction strips 623, one suction strip 623 is fixedly connected to one end of the spacing connecting element 626, and the other suction strip 623 is slidably connected between the first limiting end and the second limiting end of the spacing connecting element 626.

The first spacing driving component 622 is configured to drive the adsorbing bars 623 at a second end (e.g., a left end) to reciprocate along a first horizontal direction, so as to implement the reciprocating movement of each adsorbing bar 623 between the first limiting end and the second limiting end of the corresponding spacing connecting piece 626. When the suction bar 623 moves to the first limiting end, the suction bars 623 are close to each other. When the adsorption bars 623 move to the second limiting end, the adsorption bars 623 are separated from each other.

The distance separating connecting piece 626 in the embodiment of fig. 7 and 8 is a connecting block, a waist-shaped hole extending along the first horizontal direction is formed on the connecting block, one of the two adjacent adsorbing bars 623 is fixedly connected with one end of the connecting block, the other adsorbing bar 623 is provided with a connecting pin, and the connecting pin is connected in the waist-shaped hole in a penetrating manner and can slide in the waist-shaped hole, namely, two ends of the waist-shaped hole form a first limiting end and a second limiting end of the connecting block.

With continued reference to fig. 7 and 8, optionally, the first split drive assembly 622 includes a split cylinder 627, a connecting plate 628, a split tie rod 629, a pin 6210, and a spring 6211, wherein: a spacer rod 629 is slidably coupled to the guide 625 and positioned adjacent to the suction bar 623 at the second end. The spacing cylinder 627 is arranged on the frame 624, one end of the connecting plate 628 is connected to the telescopic rod of the spacing cylinder 627, and the other end of the connecting plate 628 is connected to the spacing pull rod 629. One end of the pin shaft 6210 is provided with a limiting step, and the other end of the pin shaft 6210 passes through the distance-dividing pull rod 629 and is then connected to the adsorption strip 623 at the second end. The spring 6211 is sleeved on the pin shaft 6210, one end of the spring 6211 abuts against the spacing pull rod 629, and the other end of the spring 6211 abuts against the spacing step. The spacing cylinder 627 is used for driving the spacing pull rod 629 to reciprocate along the first horizontal direction, so as to drive the adsorption strips 623 to approach each other or separate from each other.

By providing the separation pull rod 629, the separation cylinder 627 is not directly connected to the suction bar 623, and the suction bar 623 can be prevented from being pulled out by too large a stroke of the separation cylinder 627. After each suction bar 623 is separated in place, if the distance separating cylinder 627 has a stroke which is not completed, the distance separating cylinder 627 can drive the distance separating pull rod 629 to move along the pin shaft 6210 so as to compress the spring 6211, thereby digesting the residual stroke of the distance separating cylinder 627.

As shown in fig. 9, the film strip cutting mechanism 5 in the embodiment of the present application includes a cutting driving mechanism 51 and a cutting assembly 52, the cutting assembly 52 is connected to the driving end of the cutting driving mechanism 51, and the cutting driving mechanism 51 drives the cutting assembly 52 to move, so that the cutting assembly 52 abuts against the cutting carrier platform 4 and performs cutting of the film strip.

Alternatively, the cutting drive mechanism 51 includes a cutting lift mechanism and a cutting translation mechanism. The cutting assembly 52 includes a rotary drive assembly 521, a rotary arbor 522, and a plurality of cutters 523. Specifically, the cutting translation mechanism is connected to a driving end of the cutting lifting mechanism, the rotary driving assembly 521 is connected to a driving end of the cutting translation mechanism, the rotary cutter shaft 522 is connected to a driving end of the rotary driving assembly 521 and extends along the first horizontal direction, and the plurality of cutters 523 are arranged on the rotary cutter shaft 522 at intervals.

The film strip cutting process by the film strip cutting mechanism 5 is as follows:

after the film strip is positioned on the cutting bearing platform 4, the cutting translation mechanism drives the plurality of cutters 523 to translate to the first end of the cutting bearing platform 4, and the cutting lifting mechanism drives the plurality of cutters 523 to descend to a low position, so that the plurality of cutters 523 are pressed at one end of the film strip and are positioned at the corresponding cutting slits.

Then, the cutting translation mechanism drives the plurality of cutters 523 to translate from the first end of the cutting carrier platform 4 to the second end of the cutting carrier platform 4, and the rotation driving component 521 drives the rotation cutter shaft 522 to rotate synchronously, so as to drive the plurality of cutters 523 to rotate at a high speed. The film strip is cut into a plurality of film strips by a plurality of cutters 523.

Of course, other cutting structures may be employed for the cutting assembly 52, such as a cutting assembly 52 comprising a plurality of wires in tension and extending in a second horizontal direction, and a heating assembly for heating the wires. After the film strip is positioned on the cutting and carrying platform 4, the cutting driving mechanism 51 drives each heated metal wire to the upper part of the film strip, and then drives each metal wire to descend to contact the film strip so as to cut the film strip into a plurality of film strips.

Optionally, the film strip cutting mechanism 5 further includes a film strip pressing plate 53 disposed below the cutting assembly 52, and the film strip pressing plate 53 is used to press the film strip onto the cutting carrier platform 4 before the cutting assembly 52 cuts the film strip. The film strip is pressed by the film strip pressing plate 53, so that the film strip can be further prevented from shifting in the cutting process, and the edge of the cut film strip is ensured to be neat. Optionally, a plurality of cutting slits through which a plurality of cutters 523 or wires pass are provided on the film tape pressing plate 53.

As shown in fig. 10 to 11, the film strip spacing mechanism 7 includes a second mounting bracket 71, a second spacing driving assembly 72, and a plurality of spacing stages 73, wherein: the plurality of distance separating tables 73 are slidably connected to the second mounting bracket 71 side by side, for example, a slide rail is provided on the second mounting bracket 71, and the plurality of distance separating tables 73 are slidably connected to the slide rail. Each of the separation stages 73 is for carrying a respective one of the membrane strips. The second pitch drive assembly 72 is for driving the plurality of pitch stages 73 to slide apart such that the pitch between the plurality of film strips is a first predetermined value.

As described in the foregoing embodiment, since the handling mechanism 6 has already performed the pre-separation of the plurality of film strips during handling, the pitch between the plurality of film strips is adjusted to the second predetermined value. In this way, the distance separating tables 73 in the film strip distance separating mechanism 7 do not need to be particularly narrow, so that the distance separating tables 73 can be machined and manufactured conveniently.

Optionally, the second split drive assembly 72 includes a pulling portion 721 and a split belt 722, wherein: the pulling portion 721 is provided on the second mounting bracket 71. A first end (e.g., a right end) of the spacing belt 722 is connected to the second mounting bracket 71, and a plurality of spacing stages 73 are connected to the spacing belt 722, wherein the lengths of the spacing belts between each adjacent spacing stages 73 are equal.

The driving end of the pulling part 721 is connected to the spacing table 73 near the second end (e.g., the left end) of the spacing belt 722, and the pulling part 721 is used for driving the spacing table 73 near the second end of the spacing belt 722 to slide away from the first end of the spacing belt to tighten the spacing belt. When the spacing belt is tightened, the spacing between the plurality of membrane strips carried on the plurality of spacing blocks 73 is adjusted to a first predetermined value.

When the plurality of film strips separated by the separating table 73 are removed, the pulling part 721 is further used for driving the separating table 73 close to the second end of the separating belt 722 to slide towards the first end of the separating belt so as to enable the separating tables 73 to be close to each other to receive the next group of film strips.

The pulling part 721 may be a driving mechanism capable of driving the distance table 73 to slide along the second mounting bracket 71. For example, the pulling part 721 includes a synchronous belt mounted on the second mounting bracket 71, and an adapter plate is provided on the belt body of the synchronous belt, and the adapter plate is connected to the distance separating table 73 near the second end (e.g., the left end) of the distance separating belt 722, and drives the distance separating table 73 to slide when the synchronous belt rotates.

The application also provides a series welding machine, which comprises the film strip preparation mechanism, the welding strip feeding mechanism, the battery piece feeding mechanism, the carrying mechanism, the conveying mechanism and the series connection mechanism, wherein the film strip preparation mechanism, the welding strip feeding mechanism, the battery piece feeding mechanism and the carrying mechanism are all arranged in the series connection mechanism, and the series connection mechanism comprises the following components:

The film strip preparation mechanism is used for providing the film strip, the welding strip feeding mechanism is used for providing the welding strip group, the battery piece feeding mechanism is used for providing the battery piece, and the battery piece is an IBC battery piece.

The carrying mechanism is used for laying N+1 membrane strips provided by the membrane strip preparation mechanism, N+1 welding strip groups provided by the welding strip feeding mechanism and N battery pieces provided by the battery piece feeding mechanism on the conveying mechanism according to a preset cloth string rule.

The conveying mechanism conveys the laid film strips, the welding strips and the battery pieces to the series connection mechanism, and the series connection mechanism is used for welding the film strips, the welding strips and the battery pieces into a battery string.

Therefore, the automatic welding and stringing of the IBC battery pieces are realized by the string welding machine through the cooperation of the film strip preparation mechanism, the welding strip feeding mechanism, the battery piece feeding mechanism, the carrying mechanism, the conveying mechanism and the stringing mechanism.

The string rule in the IBC battery string may include, for example, the following two implementations:

embodiment one:

step 1, laying an N+1 group welding belt and N+1 membrane strips, wherein each membrane strip is stacked above the corresponding welding belt group.

Specifically, the carrying mechanism can pick up the n+1 assembly welding belt from the welding belt feeding mechanism, and then lay the n+1 assembly welding belt on the conveying mechanism; the handling mechanism then picks up n+1 film strips from the film strip preparation mechanism and stacks the n+1 film strips over the corresponding solder strip sets. The handling mechanism can pick up the N+1 membrane strips from the membrane strip preparation mechanism, pick up the N+1 assembly welding strips from the welding strip feeding mechanism, ensure that the picked membrane strips are all positioned above the corresponding welding strip groups, and then lay the picked N+1 membrane strips and the N+1 assembly welding strips on the conveying mechanism.

And 2, stacking the back surfaces of the N battery pieces onto the N+1 assembly welding strips downwards, wherein one battery piece is stacked between every two adjacent film strips.

Embodiment 2:

referring to fig. 12, the string rule in the present embodiment is as follows:

step 1, the back surfaces of the N battery pieces 100 are upwards laid on a conveying mechanism.

In the embodiment of fig. 12, n=11, i.e. the IBC cell strings to be strings are welded into strings from 11 cells.

And 2, laying n+1 film strips 200 and n+1 assembly welding strips 300, wherein one film strip 200 is respectively laid between every two adjacent battery pieces 100, outside the 1 st battery piece 100 and outside the N th battery piece 100, and the n+1 assembly welding strips 300 are laid above the N battery pieces 100 and the n+1 film strips 200.

Specifically, the handling mechanism can pick up n+1 membrane strips from the membrane strip preparation mechanism, then stack the n+1 membrane strips at the corresponding cell spacing and outside, then pick up n+1 assembly welding strips from the welding strip feeding mechanism, and then lay the n+1 assembly welding strips on the cell. The handling mechanism can pick up the N+1 group welding strips from the welding strip feeding mechanism, pick up the N+1 membrane strips from the membrane strip preparation mechanism, ensure that the picked membrane strips are all positioned below the corresponding welding strip groups, and then lay the picked N+1 membrane strips and the N+1 group welding strips on the battery piece.

The application has been described above in sufficient detail with a certain degree of particularity. It will be appreciated by those of ordinary skill in the art that the descriptions of the embodiments are merely exemplary and that all changes that come within the true spirit and scope of the application are desired to be protected. The scope of the application is indicated by the appended claims rather than by the foregoing description of the embodiments. Moreover, the embodiments mentioned in the present application are not only implemented individually, but some embodiments can also be implemented in combination.

Claims (14)

1. The utility model provides a membrane strip preparation mechanism, its characterized in that, membrane strip preparation mechanism includes membrane strip feed mechanism, cuts loading platform, membrane strip and cuts mechanism, membrane strip transport mechanism and membrane strip separation distance mechanism, wherein:

the film strip feeding mechanism is arranged in front of the cutting bearing platform and is used for providing a film strip to be cut for the cutting bearing platform along a first horizontal direction;

the cutting bearing platform is used for positioning the film strip provided by the film strip feeding mechanism;

the film strip cutting mechanism is used for cutting the film strips on the cutting bearing platform along a second horizontal direction perpendicular to the first horizontal direction so as to obtain a plurality of film strips;

The film strip conveying mechanism is used for picking up a plurality of film strips from the cutting bearing platform and conveying the picked up film strips to the film strip distance separating mechanism;

the film strip spacing mechanism is used for spacing a plurality of film strips so that the spacing between the film strips is a first preset value.

2. The film strip preparation mechanism of claim 1, wherein the film strip loading mechanism comprises a film strip roll, a film strip traction mechanism, and a film strip hold-down mechanism, wherein:

the film belt traction mechanism is used for pulling out the film belt on the film belt material roll along a first horizontal direction and laying the film belt on the cutting bearing platform;

the film strip pressing mechanism is arranged between the cutting bearing platform and the film strip material roll and is used for pressing the pulled film strip.

3. The film strip preparation mechanism of claim 2, wherein the film strip traction mechanism comprises a translation drive mechanism, a first lift drive mechanism, and a gripping mechanism, wherein:

the clamping mechanism is connected to the driving end of the first lifting driving mechanism, the first lifting driving mechanism is connected to the driving end of the translation driving mechanism, the first lifting driving mechanism is used for driving the clamping mechanism to lift, and the translation driving mechanism is used for driving the clamping mechanism to reciprocate in the first horizontal direction;

The clamping mechanism is used for clamping the end part of the film strip from the film strip pressing mechanism and releasing the film strip after the film strip is pulled out to a preset position.

4. The film strip preparation mechanism of claim 3, wherein the gripping mechanism comprises a traction base plate, a flip drive mechanism, and a traction clamp plate, wherein:

the traction bottom plate and the turnover driving mechanism are connected to the driving end of the first lifting driving mechanism, and the traction clamping plate is connected to the driving end of the turnover driving mechanism and is positioned above the traction bottom plate;

the overturning driving mechanism is used for driving the traction clamping plate to overturn towards or away from the traction bottom plate so as to clamp or release the film strip.

5. The film strip preparation mechanism of claim 2, wherein the film strip compression mechanism comprises a compression table, a compression plate driving mechanism, and a film strip carrier, wherein:

the pressing plate is arranged above the pressure bearing table and connected with the driving end of the pressing plate driving mechanism, the pressing plate driving mechanism is used for driving the pressing plate to lift, and the film belt is pressed on the pressure bearing table when the pressing plate descends;

The membrane strip bearing piece is connected to the bearing platform and is close to the cutting bearing platform, the horizontal distance between the membrane strip bearing piece and the cutting bearing platform is adjustable, the membrane strip bearing piece is used for bearing the end part of the membrane strip, and the membrane strip traction mechanism clamps the end part of the membrane strip from the membrane strip bearing piece.

6. The film strip preparation mechanism as recited in claim 1 or 2, further comprising a second lifting drive mechanism, wherein the cutting carrier platform is connected to a drive end of the second lifting drive mechanism, and the second lifting drive mechanism is configured to drive the cutting carrier platform to lift;

the film strip cutting mechanism comprises a plurality of cutters or a plurality of hot cutting wires, the cutters or the hot cutting wires are in one-to-one correspondence with the cutting slits, and the cutters or the hot cutting wires cut the film strips on the cutting bearing platform along the corresponding cutting slits;

and the cutting bearing platform is also provided with an adsorption hole for positioning the membrane belt.

7. The film strip preparation mechanism of claim 1, wherein the film strip handling mechanism comprises a movement mechanism and a handling assembly, wherein:

The conveying assembly is connected to the driving end of the moving mechanism, and the moving mechanism is used for driving the conveying assembly to move and switch between the cutting bearing platform and the film strip distance separating mechanism, so that the conveying assembly conveys a plurality of film strips from the cutting bearing platform to the film strip distance separating mechanism;

the carrying assembly is provided with a plurality of rows of adsorption holes, and each row of adsorption holes adsorbs one membrane strip.

8. The membrane strip preparation mechanism of claim 7, wherein the handling assembly comprises a first mounting bracket, a first standoff driving assembly, and a plurality of adsorbent strips, each of the adsorbent strips having a row of the adsorbent holes therein, wherein:

the first mounting bracket is connected to the driving end of the moving mechanism, and the first spacing driving assembly is arranged on the first mounting bracket;

the adsorption strips are arranged side by side and are respectively connected to the first mounting bracket in a sliding manner;

the first separation driving assembly is used for driving the adsorption strips to be close to each other, so that each adsorption strip is used for correspondingly adsorbing one membrane strip on the cutting bearing platform; the first spacing driving assembly is further used for driving the plurality of adsorption strips to be far away from each other, so that the spacing between the adsorbed plurality of membrane strips is a second preset value, and the second preset value is smaller than the first preset value.

9. The film strip preparation mechanism of claim 8, wherein the first mounting bracket comprises a frame and a guide member disposed on the frame along the first horizontal direction;

each adsorption strip is connected to the guide piece in a sliding manner, among the adsorption strips, the adsorption strip at the first end is connected with the frame, and the adjacent two adsorption strips are connected through a spacing connecting piece, and the adsorption strip at the second end is connected with the driving end of the first spacing driving assembly; or, among the plurality of adsorption strips, the adsorption strip at the first end is fixed on the frame, the rest adsorption strips are all connected to the guide piece in a sliding way, two adjacent adsorption strips are all connected through a spacing connecting piece, and the adsorption strip at the second end is connected with the driving end of the first spacing driving assembly;

one of the two adjacent adsorption strips is fixedly connected with one end of the spacing connecting piece, and the other adsorption strip is connected between the first limiting end and the second limiting end of the spacing connecting piece in a sliding manner;

the first spacing driving component is used for driving the adsorption strips at the second end to reciprocate along the first horizontal direction so as to realize the reciprocating movement of each adsorption strip between the first limiting end and the second limiting end of the corresponding spacing connecting piece; when the adsorption strips move to the first limiting end, the adsorption strips are close to each other; when the adsorption strips move to the second limiting end, the adsorption strips are far away from each other.

10. The film strip preparation mechanism of claim 9, wherein the first split drive assembly comprises a split cylinder, a connecting plate, a split tie rod, a pin and a spring, wherein:

the separation pull rod is connected to the guide piece in a sliding manner and is close to the adsorption strip at the second end;

the distance separating cylinder is arranged on the frame, one end of the connecting plate is connected to the telescopic rod of the distance separating cylinder, and the other end of the connecting plate is connected to the distance separating pull rod; one end of the pin shaft is provided with a limiting step, and the other end of the pin shaft penetrates through the distance separating pull rod and is connected to the adsorption strip at the second end; the spring is sleeved on the pin shaft, one end of the spring is abutted against the distance separating pull rod, and the other end of the spring is abutted against the limiting step;

the distance dividing cylinder is used for driving the distance dividing pull rod to reciprocate along the first horizontal direction.

11. The film strip preparation mechanism of claim 1, wherein the film strip spacing mechanism comprises a second mounting bracket, a second spacing drive assembly, and a plurality of spacing stations, wherein:

the plurality of separation platforms are connected to the second mounting bracket in a side-by-side sliding manner, and each separation platform is used for bearing one membrane strip;

The second spacing driving assembly is used for driving the plurality of spacing tables to slide apart, so that the distance between the plurality of membrane strips is the first preset value.

12. The film strip preparation mechanism of claim 11, wherein the second pitch drive assembly comprises a pulling portion and a pitch belt, wherein:

the traction part is arranged on the second mounting bracket;

the first ends of the distance dividing belts are connected to the second mounting bracket, and a plurality of distance dividing tables are connected to the distance dividing belts, wherein the lengths of the distance dividing belts between every two adjacent distance dividing tables are equal;

the driving end of the traction part is connected with a spacing table close to the second end of the spacing belt, and the traction part is used for driving the spacing table close to the second end of the spacing belt to slide away from the first end of the spacing belt so as to tighten the spacing belt; when the spacing belt is tightened, the distance between the membrane strips borne on the spacing tables is the first preset value.

13. A stringer comprising the film strip preparation mechanism, the solder strip feeding mechanism, the battery piece feeding mechanism, the handling mechanism, the conveying mechanism and the tandem connection mechanism of any one of claims 1 to 12, wherein:

The film strip preparation mechanism is used for providing film strips, the welding strip feeding mechanism is used for providing welding strip groups, the battery piece feeding mechanism is used for providing battery pieces, and the battery pieces are IBC battery pieces;

the carrying mechanism is used for laying N+1 membrane strips provided by the membrane strip preparation mechanism, N+1 welding strip groups provided by the welding strip feeding mechanism and N battery pieces provided by the battery piece feeding mechanism on the conveying mechanism according to a preset string rule;

the conveying mechanism conveys the laid film strips, the welding strips and the battery pieces to the series connection mechanism, and the series connection mechanism is used for welding the film strips, the welding strips and the battery pieces into a battery string.

14. The stringer of claim 13, wherein the stringing rule is:

laying an N+1 group welding strip and N+1 membrane strips, wherein each membrane strip is stacked above the corresponding welding strip group;

stacking N battery pieces on the N+1 assembly welding strips with the back faces facing downwards, wherein one battery piece is stacked between two adjacent membrane strips;

alternatively, the string rule is:

the back surfaces of the N battery pieces are upwards laid on the conveying mechanism;

and laying N+1 membrane strips and N+1 assembly welding strips, wherein one membrane strip is respectively laid between every two adjacent battery pieces, outside of the 1 st battery piece and outside of the N th battery piece, and the N+1 assembly welding strips are laid above the N battery pieces and the N+1 membrane strips.