阅读说明：本技术 一种太阳能电池片排版设备及制造设备、排版方法 (Solar cell typesetting equipment, manufacturing equipment and typesetting method ) 是由 郭梦龙 李华 刘继宇 于 2021-06-30 设计创作，主要内容包括：本发明公开一种太阳能电池片排版设备及制造设备、排版方法,涉及背接触太阳能电池技术领域,以减少背接触电池片与背板对位发生偏移,以及提高背接触太阳能电池组件的生产效率。太阳能电池片排版设备具有至少一个上料工位、至少一个转送工位、以及排版工位。太阳能电池片排版设备包括至少一个翻转机构以及至少一个排版机构。翻转机构用于将电池片从相应上料工位翻转至相应转送工位,位于转送工位的电池片的背接触面朝向背板所在平面的方向。排版机构设置于转送工位与排版工位之间,以用于将电池片从相应转送工位转运至背板的相应排版位置。本发明提供的太阳能电池片排版设备,用于对背接触太阳能电池片放置到背板上时进行排版操作。(The invention discloses a solar cell typesetting device, a manufacturing device and a typesetting method, relates to the technical field of back contact solar cells, and aims to reduce the offset of the back contact cell and a back plate and improve the production efficiency of a back contact solar cell module. The solar cell typesetting equipment is provided with at least one feeding station, at least one transferring station and a typesetting station. The solar cell typesetting equipment comprises at least one turnover mechanism and at least one typesetting mechanism. The turnover mechanism is used for turning over the battery piece from the corresponding feeding station to the corresponding transferring station, and the back contact surface of the battery piece positioned at the transferring station faces the direction of the plane where the back plate is positioned. The typesetting mechanism is arranged between the transfer station and the typesetting station and is used for transferring the battery pieces from the corresponding transfer station to the corresponding typesetting position of the back plate. The solar cell typesetting equipment provided by the invention is used for performing typesetting operation when the back contact solar cell is placed on the back plate.)

1. The utility model provides a solar wafer typesetting equipment for carry out the operation of typesetting when back contact solar wafer places the backplate on, its characterized in that, solar wafer typesetting equipment has at least one material loading station, at least one and forwards the station, and typesetting the station, solar wafer typesetting equipment includes:

each turnover mechanism is arranged between the feeding station and the transferring station and used for overturning a battery piece from the corresponding feeding station to the corresponding transferring station, and the back contact surface of the battery piece positioned at the transferring station faces the direction of the plane of the back plate;

and at least one typesetting mechanism, set up in transfer the station with between the typesetting station, every typesetting mechanism includes the mobile device and is located the vacuum adsorption device of the one end of mobile device, the vacuum adsorption device is used for adsorbing the battery piece, the mobile device is used for the battery piece is located transfer the station, the backplate is located during the typesetting station, will the battery piece is from corresponding transfer the station and transport extremely the corresponding position of typesetting of backplate.

2. The solar cell typesetting apparatus according to claim 1, wherein the solar cell typesetting apparatus further comprises:

the first image collector is used for collecting the image of the back contact surface of the battery piece when the battery piece is positioned at the corresponding transfer station;

the second image collector is used for collecting the typesetting images of the typesetting position of the backboard when the backboard is positioned at the typesetting station;

and the controller is respectively communicated with the first image collector, the second image collector and the typesetting mechanism and is used for controlling the typesetting mechanism to transfer the battery piece to the corresponding typesetting position of the back plate according to the image of the back contact surface of the battery piece and the typesetting image.

3. The solar cell typesetting apparatus according to claim 2, wherein the first image collector is arranged at the transfer station; and/or the presence of a gas in the gas,

the second image collector is arranged at one end of the mobile device.

4. The solar cell typesetting equipment according to any one of claims 1-3, wherein at least one of the turnover mechanisms comprises at least one first vacuum adsorption plate, a first adsorption driving mechanism for driving the first vacuum adsorption plate to adsorb the cell, and a turnover driving mechanism for driving the first vacuum adsorption plate to turn over.

5. The solar cell typesetting apparatus according to claim 4, wherein the first vacuum adsorption plate has a hollow-out portion, and a part of the cell is adsorbed at the hollow-out portion.

6. The solar cell typesetting apparatus according to claim 5, wherein when the solar cell typesetting apparatus comprises a first image collector, and the vacuum adsorption plate is located at the transfer station, the first image collector is located below the hollowed-out portion.

7. The solar cell typesetting equipment according to any one of claims 1-3, wherein the moving device is a mechanical arm; and/or the presence of a gas in the gas,

the vacuum adsorption device comprises a second vacuum adsorption plate arranged at one end of the moving device and a second adsorption driving mechanism for driving the second vacuum adsorption plate to adsorb the battery piece.

8. The solar cell typesetting equipment according to any one of claims 1-3, wherein the typesetting mechanism is located at the vacuum adsorption device and further comprises a hot-pressing device, and the hot-pressing device is used for hot-pressing the cell pieces at the corresponding typesetting positions.

9. The solar cell typesetting device as claimed in any one of claims 1 to 3, wherein the solar cell typesetting device further comprises:

the first conveying mechanism is used for conveying the battery piece to at least one feeding station; and/or the presence of a gas in the gas,

and the second conveying mechanism is used for conveying the back plate to the typesetting station.

10. The solar cell typesetting device according to any one of claims 1-3, wherein the mounting surface of the back plate is provided with a plurality of typesetting areas, and each typesetting area is provided with at least one typesetting position;

when the solar cell typesetting equipment comprises a second conveying mechanism, the number of the solar cell typesetting equipment is multiple, the multiple solar cell typesetting equipment are distributed along the conveying direction of the second conveying mechanism, and the adjacent solar cell typesetting equipment is connected through the second conveying mechanism;

each solar cell typesetting device is used for typesetting the cell in the corresponding typesetting area.

11. A solar cell module manufacturing apparatus, comprising the solar cell typesetting apparatus according to any one of claims 1 to 10.

12. A typesetting method of solar cells is characterized by being applied to the typesetting equipment of the solar cells as claimed in any one of claims 1-10; the typesetting method comprises the following steps:

step S100, controlling at least one turnover mechanism to be in contact with the back contact surface of the battery piece, and turning over the battery piece from the corresponding feeding station to the transferring station so that the back contact surface of the battery piece positioned at the transferring station faces the direction of the back plate;

step S200, controlling at least one typesetting mechanism to adsorb the front of the battery piece through the vacuum adsorption device, and transferring the battery piece to the corresponding typesetting position of the back plate from the corresponding transfer station through the mobile device.

13. The method for typesetting solar battery pieces according to claim 12, wherein when the solar battery piece typesetting device is the solar battery piece typesetting device according to claim 2, the step S200 comprises:

step S210, controlling at least one first image collector to collect images of the back contact surface of the battery piece on the corresponding transfer station, and sending the images of the back contact surface of the battery piece to the controller;

controlling at least one second image collector to collect the typesetting images of the typesetting position of the backboard and sending the typesetting images to the controller;

and S220, controlling the typesetting mechanism to transfer the battery piece to the corresponding typesetting position of the back plate by the typesetting mechanism according to the image of the back contact surface of the battery piece and the typesetting image by the controller.

14. The method for typesetting solar cell pieces according to claim 13, wherein the step S220 comprises:

step S221: comparing the image of the back contact surface of the battery piece with a reference battery piece image to determine the offset parameter of the battery piece;

comparing the typesetting image with a reference typesetting image, and determining the offset parameter of the typesetting position;

step S222: the controller determines the offset parameters of the battery pieces at the corresponding typesetting positions of the backboard according to the offset parameters of the battery pieces and the offset parameters of the typesetting positions;

step S223: the controller controls the typesetting mechanism to transfer the battery pieces to the corresponding typesetting positions of the back plate according to the deviation parameters.

15. The method for typesetting solar battery pieces according to claim 12, wherein when the solar battery piece typesetting device is the solar battery piece typesetting device according to claim 4, the step S100 comprises:

step S110, controlling the first adsorption driving mechanism to drive the first vacuum adsorption plate to adsorb the back contact surface of the battery piece;

step S120, controlling the turnover driving mechanism to drive the first vacuum adsorption plate to turn over, and turning over the battery piece from the corresponding feeding station to the transferring station;

step S130, controlling the first suction driving mechanism to stop driving the first vacuum suction plate to suck the back contact surface of the battery piece, so that the back contact surface of the battery piece located at the transfer station faces the direction of the back plate.

16. The method for typesetting solar battery pieces according to any one of claims 12-15, wherein the backlight surface of at least one of the solar battery pieces is provided with a plurality of first mark points; wherein the content of the first and second substances,

the backlight surface of at least one battery piece is provided with a plurality of first conductive parts and a plurality of first insulating parts; at least one first mark point is positioned on the corresponding first conductive part or the corresponding first insulating part.

17. The typesetting method for the solar cell pieces according to any one of claims 12-15, wherein the mounting surface of the back sheet is provided with a plurality of second mark points, at least one of the back sheets is provided with a plurality of second conductive parts and a plurality of second insulating parts; wherein the content of the first and second substances,

at least one second mark point is positioned on the corresponding second conductive part or the corresponding second insulating part.

Technical Field

The invention relates to the technical field of back contact solar cells, in particular to solar cell typesetting equipment, manufacturing equipment and a typesetting method.

Background

In the prior art, a back contact solar cell module realizes conductive interconnection between back contact cells through a back plate. When a back contact solar cell module is manufactured, a plurality of conductive materials are printed on the back contact surface of a cell to form a conductive contact. The number of the conductive contacts on each battery piece is 20-5000. Back contact cells are then laid on the back sheet, with the conductive contacts of each back contact cell aligned with corresponding conductive areas on the back sheet.

Because the counterpoint requirement of the huge conductive contact of quantity and backplate is high, appear very easily because the skew of back contact battery piece leads to back contact solar module to the short circuit phenomenon appears to be difficult to reprocess, consequently, production back contact solar module is all accomplished by the manual work, can lead to back contact solar module's manufacturing cost higher like this to artificial production efficiency is lower, has seriously restricted back contact solar module's production and popularization.

Disclosure of Invention

The invention aims to provide a solar cell typesetting device, a manufacturing device and a typesetting method, which are used for reducing the offset of the alignment of a back contact cell and a back plate and improving the production efficiency of a back contact solar cell module.

In a first aspect, the present invention provides a solar cell typesetting apparatus, which is used for performing typesetting operation when a back contact solar cell is placed on a back plate. The solar cell typesetting equipment is provided with at least one feeding station, at least one transferring station and a typesetting station.

The solar cell typesetting equipment comprises: at least one turnover mechanism and at least one typesetting mechanism. Each turnover mechanism is arranged between the feeding station and the transferring station and used for turning the battery piece from the corresponding feeding station to the corresponding transferring station, and the back contact surface of the battery piece positioned at the transferring station faces the direction of the plane where the back plate is positioned. Each typesetting mechanism is arranged between the transfer station and the typesetting station and comprises a moving device and a vacuum adsorption device positioned at one end of the moving device. The vacuum adsorption device is used for adsorbing the battery pieces, the moving device is used for transporting the battery pieces to the corresponding typesetting positions of the back plate from the corresponding transfer stations when the battery pieces are located at the transfer stations and the back plate is located at the typesetting stations.

Under the condition of adopting above-mentioned technical scheme, tilting mechanism is used for overturning the battery piece to corresponding transfer station from corresponding material loading station. Generally, when the battery piece is conveyed by the conveying mechanism, the back contact surface of the battery piece is preferably upward, i.e. away from the conveying surface of the conveying mechanism, so as to prevent the conductive material on the back contact surface of the battery piece from being damaged after the conveying surface of the conveying mechanism is contacted with the back contact surface of the battery piece. When the back contact solar cell module is produced, the turnover mechanism firstly turns the conveyed cell piece from the corresponding feeding station to the transfer station, so that the back contact surface of the cell piece positioned at the transfer station faces to the direction of the plane of the back plate, preferably to the downward direction. And then, the vacuum adsorption device of the typesetting mechanism adsorbs the battery pieces, and the battery pieces are transferred to the corresponding typesetting positions of the back plate from the corresponding transfer stations under the drive of the moving device. Therefore, when the cell is mounted on the back plate, the typesetting is performed through the typesetting mechanism, so that the offset of the back contact cell and the back plate in contraposition can be reduced, the automation of the back contact solar cell module is realized, the production efficiency of the back contact solar cell module is improved, and the production cost is reduced.

In a possible implementation manner, the solar cell typesetting apparatus further includes: the image typesetting system comprises a first image collector, a second image collector and a controller which is respectively communicated with the first image collector, the second image collector and the typesetting mechanism. The first image collector is used for collecting the image of the back contact surface of the battery piece when the battery piece is located at the corresponding transfer station. The second image collector is used for collecting the typesetting images of the typesetting position of the backboard when the backboard is positioned at the typesetting station. The controller is used for controlling the typesetting mechanism to transfer the battery pieces to the corresponding typesetting positions of the back plate according to the images of the back contact surfaces of the battery pieces and the typesetting images.

Under the condition of adopting the technical scheme, the turnover mechanism is used for placing the battery piece at the transfer station, and the first image collector is used for collecting the image of the back contact surface of the battery piece when the battery piece is positioned at the corresponding transfer station. And when the backboard is positioned at the typesetting station, the second image collector collects the typesetting images of the typesetting position of the backboard. The controller controls the typesetting mechanism to typeset the battery pieces at the corresponding typesetting positions of the back plate according to the images of the back contact surfaces of the battery pieces and the typesetting images. Based on this, after conveying battery piece and backplate, the controller is according to the image of battery piece back contact surface and the corresponding composing position of composing image control composing mechanism with the battery piece composing at the backplate, even battery piece and backplate also are not influenced taking place to squint in the transfer process, need not the position of accurate backplate and battery piece when the conveying, it is low to the device requirement of conveying battery piece and backplate, and make battery piece and backplate counterpoint accurate, greatly improved back contact solar module's yields, and have stronger adaptability and flexibility to production environment and production condition, be adapted to various subassembly types.

In a possible implementation manner, the first image collector is arranged at the transfer station.

In a possible implementation manner, the second image collector is arranged at one end of the mobile device.

By adopting the technical scheme, the second image collector is arranged at one end of the moving device, the moving device can drive the second image collector to move, and when the second image collector is close to the corresponding typesetting position of the battery piece, the second image collector can collect images at the corresponding typesetting position, so that the second image collector can accurately collect images at different typesetting positions.

In a possible implementation manner, the at least one turnover mechanism includes at least one first vacuum adsorption plate, a first adsorption driving mechanism for driving the first vacuum adsorption plate to adsorb the battery piece, and a turnover driving mechanism for driving the first vacuum adsorption plate to turn over.

In a possible implementation manner, the first vacuum adsorption plate has a hollow-out portion, and a part of the battery piece is adsorbed at the hollow-out portion.

Adopt under the condition of above-mentioned technical scheme, first vacuum adsorption board has fretwork portion, and when first vacuum adsorption board adsorbs the battery piece, the position that the back contact surface of battery piece has electrically conductive contact can be located fretwork portion, avoids electrically conductive contact and first vacuum adsorption board to contact the back, causes to stain or damage the battery piece.

In a possible implementation manner, the solar cell typesetting equipment comprises a first image collector, and when the first vacuum adsorption plate is located at the transfer station, the first image collector is located below the hollow part.

Under the condition of adopting above-mentioned technical scheme, be in when first vacuum adsorption board and transmit the station, first image collector is located the below of fretwork portion, and first image collector can gather the image of the back contact surface of battery piece through fretwork portion, and not only the image of gathering is more accurate, and first image collector does not influence tilting mechanism work moreover.

In one possible implementation, the moving device is a robot arm.

In a possible implementation manner, the vacuum adsorption device includes a second vacuum adsorption plate disposed at one end of the moving device, and a second adsorption driving mechanism for driving the second vacuum adsorption plate to adsorb the battery piece.

In a possible implementation manner, the typesetting mechanism is also provided with a hot-pressing device at the position of the vacuum adsorption device, and the hot-pressing device is used for hot-pressing the battery pieces at the corresponding typesetting positions.

According to the technical scheme, the hot-pressing device is integrated at the position, located on the vacuum adsorption device, of the typesetting mechanism, and therefore when the battery piece is transferred to the corresponding typesetting position of the back plate by the typesetting mechanism, the battery piece can be hot-pressed at the corresponding typesetting position through the hot-pressing device, and production efficiency is improved.

In a possible implementation manner, the solar cell typesetting equipment further comprises a first conveying mechanism, and the first conveying mechanism is used for conveying the solar cells to at least one feeding station.

In a possible implementation manner, the solar cell typesetting equipment further includes a second conveying mechanism, and the second conveying mechanism is used for conveying the back plate to the typesetting station.

In a possible implementation manner, the mounting surface of the backboard is provided with a plurality of typesetting areas, and each typesetting area is provided with at least one typesetting position.

When the solar cell typesetting equipment comprises the second conveying mechanism, the number of the solar cell typesetting equipment is multiple. The solar cell typesetting equipment is distributed along the conveying direction of the second conveying mechanism, and the adjacent solar cell typesetting equipment is connected through the second conveying mechanism. Each solar cell typesetting device is used for typesetting the cells in the corresponding typesetting area.

Under the condition of adopting the technical scheme, the adjacent solar cell typesetting equipment is connected through the second conveying mechanism, and the back plate can be sequentially conveyed to the typesetting position of each solar cell typesetting equipment. In addition, the mounting surface of the back plate is provided with a plurality of typesetting areas, and each solar cell typesetting device is used for typesetting the cells in the corresponding typesetting area. Therefore, after the solar cell typesetting equipment completes typesetting in the corresponding typesetting area, the back plate is conveyed to the next typesetting station by the second conveying mechanism, and the subsequent solar cell typesetting equipment typesets in the corresponding typesetting area in sequence, so that typesetting is completed on the back plate. Each solar cell typesetting device is only responsible for the corresponding typesetting area, so that not only are complicated steps of alignment, adjustment and the like not needed, but also the interference among all the typesetting mechanisms is reduced, and the production efficiency is improved.

In a second aspect, the invention also provides a manufacturing device of the solar cell module. The manufacturing equipment of the solar cell module comprises the solar cell typesetting equipment described in the first aspect or any one of the possible implementation manners of the first aspect.

The beneficial effects of the manufacturing apparatus for a solar cell module provided by the second aspect are the same as the beneficial effects of the solar cell typesetting apparatus described in the first aspect or any possible implementation manner of the first aspect, and are not described herein again.

In a third aspect, the invention further provides a typesetting method for the solar cell pieces. The method is applied to the solar cell typesetting equipment described in the first aspect or any possible implementation manner of the first aspect. The typesetting method comprises the following steps:

and S100, controlling at least one turnover mechanism to be in contact with the back contact surface of the battery piece, and turning the battery piece from the corresponding feeding station to the transferring station, so that the back contact surface of the battery piece positioned at the transferring station faces the direction of the plane of the back plate.

And S200, controlling at least one typesetting mechanism to adsorb the front side of the battery piece through a vacuum adsorption device, and transferring the battery piece from the corresponding transfer station to the corresponding typesetting position of the back plate through a moving device.

The beneficial effects of the method for typesetting solar cells provided in the third aspect are the same as those of the solar cell typesetting apparatus described in the first aspect or any possible implementation manner of the first aspect, and are not described herein again.

In a possible implementation manner, when the solar cell typesetting apparatus includes a first image collector, a second image collector, and a controller, step S200 includes:

and step S210, controlling at least one first image collector to collect the image of the back contact surface of the battery piece on the corresponding transfer station, and sending the image of the back contact surface of the battery piece to the controller.

And controlling at least one second image collector to collect the typesetting image of the typesetting position of the backboard and sending the typesetting image to the controller.

And S220, controlling the typesetting mechanism to transfer the battery pieces to the corresponding typesetting positions of the back plate by the controller according to the images of the back contact surfaces of the battery pieces and the typesetting images.

In a possible implementation manner, the step S220 includes:

step S221: and comparing the image of the back contact surface of the battery piece with the reference battery piece image to determine the offset parameter of the battery piece. And comparing the typesetting image with the reference typesetting image, and determining the offset parameter of the typesetting position.

Step S222: and the controller determines the offset parameters of the battery pieces at the corresponding typesetting positions of the backboard according to the offset parameters of the battery pieces and the offset parameters of the typesetting positions.

Step S223: the controller controls the typesetting mechanism to transfer the battery pieces to the corresponding typesetting positions of the back plate according to the offset parameters.

Under the condition of adopting the technical scheme, the offset parameter of the battery piece in the process of being transmitted is determined according to the comparison between the image of the back contact surface of the battery piece and the reference battery piece image. And determining the offset parameter of the typesetting position in the transmitted process according to the comparison of the typesetting image and the reference backboard typesetting image. Based on the method, the offset parameters of the battery pieces at the corresponding typesetting positions of the back plate can be determined, so that the typesetting positions of the battery pieces and the back plate are accurately aligned.

In one possible implementation manner, when the turnover mechanism includes a first vacuum adsorption plate, a first adsorption driving mechanism, and a turnover driving mechanism, step S100 includes:

and step S110, controlling the first adsorption driving mechanism to drive the first vacuum adsorption plate to adsorb the back contact surface of the cell.

And step S120, controlling the turnover driving mechanism to drive the first vacuum adsorption plate to turn over, and turning over the battery piece from the corresponding feeding station to the transferring station.

Step S130, controlling the first suction driving mechanism to stop driving the first vacuum suction plate to suck the back contact surface of the cell, so that the back contact surface of the cell located at the transfer station faces the direction of the plane where the back plate is located.

In a possible implementation manner, the back contact surface of the at least one battery piece is provided with a plurality of first mark points. The back contact surface of at least one battery piece is provided with a plurality of first conductive parts and a plurality of first insulating parts. At least one first mark point is positioned on the corresponding first conductive part or the corresponding first insulating part.

Under the condition of adopting the technical scheme, the back contact surface of at least one battery piece is provided with a plurality of first mark points, and the offset of the battery piece can be determined by determining the offset of the first mark points, so that the speed of determining the offset of the battery piece is increased, and the working efficiency is improved. When the image of the back contact surface of the battery piece needs to be compared with the reference battery piece image to determine the offset parameter of the battery piece, the offset parameters of the first mark points can be determined by comparing the positions of the first mark points in the image, so that the offset parameter of the battery piece can be rapidly determined.

In addition, at least one first mark point is located on the corresponding first conductive part or the corresponding first insulating part, and when the first mark point is arranged on the first insulating part, the first mark point does not affect the electric connection between the battery piece and the back plate, so that the influence caused by the arrangement of the first mark point is reduced.

In a possible implementation manner, the mounting surface of the backplane has a plurality of second mark points, and at least one backplane has a plurality of second conductive parts and a plurality of second insulating parts. And at least one second mark point is positioned on the corresponding second conductive part or the corresponding second insulating part.

Under the condition of adopting the technical scheme, the mounting surface of the back plate is provided with the plurality of second mark points, and the offset of the typesetting position can be determined by determining the offset of the plurality of second mark points, so that the speed of determining the offset of the typesetting position is improved, and the working efficiency is improved.

When the typesetting image needs to be compared with the reference typesetting image to determine the offset parameter of the typesetting position, the offset parameters of the second mark points can be determined by comparing the positions of the second mark points in the image, so that the offset parameter of the typesetting position can be quickly determined.

In addition, at least one second mark point is positioned on the corresponding second conductive part or the corresponding second insulating part, and when the second mark point is arranged on the second insulating part, the second mark point does not influence the electric connection between the battery piece and the back plate, so that the influence caused by the arrangement of the second mark point is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of a solar cell typesetting apparatus according to an embodiment of the invention;

fig. 2 is a top view of a solar cell typesetting apparatus according to an embodiment of the invention;

FIG. 3 is a schematic diagram of the turnover mechanism turning over the battery plate according to the embodiment of the invention;

FIG. 4 is a schematic diagram illustrating a second image collector and a layout mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic position diagram of a first image collector and a turnover mechanism in an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a layout mechanism transferring cells according to an embodiment of the invention;

fig. 7 is a schematic diagram of another solar cell typesetting apparatus according to an embodiment of the invention.

Reference numerals: the image processing device comprises an A-battery piece, a B-backboard, 100-a first conveying mechanism, 200-a second conveying mechanism, 310-a turnover mechanism, 311-a first vacuum adsorption plate, 312-a turnover driving mechanism, 321-a first image collector, 322-a second image collector, 323-a typesetting mechanism and 400-a transfer station.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the invention provides a solar cell typesetting device which is used for performing typesetting operation when a back contact solar cell is placed on a back plate. The back contact solar cell module comprises a back plate and a plurality of back contact cell pieces formed on the back plate. The back contact cell piece can be an IBC solar cell piece or an MWT solar cell piece. The front surface of the cell slice is not provided with any electrode or is only provided with the auxiliary grid line, so that the shading of the electrode is greatly reduced, and the efficiency of the solar cell is improved. The electrodes of the back contact surface of the cell sheet include a positive electrode and a negative electrode on the back contact surface of the silicon substrate and spaced apart from each other. The positive electrode comprises a positive connecting electrode and a positive grid line electrode, the negative electrode comprises a negative connecting electrode and a negative grid line electrode, and conductive materials are printed on the surfaces of the positive connecting electrode and the negative connecting electrode to form conductive contacts.

The back plate comprises at least one conductive layer, an insulating layer and a base layer. Wherein, the conductive layer, the insulating layer and the substrate layer are adhered into an integral structure through bonding or hot pressing. The insulating layer is located on the conducting layer, and the conducting layer is located between the insulating layer and the base layer. The insulating layer is provided with a plurality of openings, the openings correspond to the electrodes of the back contact surface of the battery, and the number of the openings corresponding to each battery piece is 20-1000. The opening may be circular, square, oval, or any other shape through which the underlying conductive layer is exposed.

Fig. 1 illustrates a perspective view of a solar cell layout apparatus in an embodiment of the present invention, and fig. 2 illustrates a top view of the solar cell layout apparatus in the embodiment of the present invention. As shown in fig. 1 and 2, the solar cell layout apparatus has at least one feeding station, at least one transfer station 400, and a layout station.

As shown in fig. 1 and fig. 2, the solar cell typesetting apparatus includes: at least one flipping mechanism 310 and at least one typesetting mechanism 323. Each turnover mechanism 310 is arranged between the feeding station and the transfer station 400, and is used for turning the battery piece a from the corresponding feeding station to the corresponding transfer station 400, and the back contact surface of the battery piece a located in the transfer station 400 faces the direction of the plane of the back plate B. In practical application, the back plate B is located below the battery piece a, and the back contact surface of the battery piece a is turned upside down.

As shown in fig. 1 and 2, each of the typesetting mechanisms 323 is disposed between the transfer station 400 and the typesetting station, and includes a moving device and a vacuum adsorption device at one end of the moving device. The vacuum adsorption device is used for adsorbing the battery piece A, the moving device is used for transferring the battery piece A to the corresponding typesetting position of the backboard B from the corresponding transfer station 400 when the battery piece A is located at the transfer station 400 and the backboard B is located at the typesetting station.

As shown in fig. 2, the solar cell typesetting apparatus may further include a first conveying mechanism 100, where the first conveying mechanism 100 is configured to convey the solar cell a to at least one loading station. Specifically, the first conveying mechanism 100 may be a conveyor belt. The battery piece A is placed on the conveyor belt and conveyed to the feeding station by the conveyor belt. Since the back contact surface of the battery piece a is already printed with the plurality of conductive contacts when the first conveying mechanism 100 conveys the battery piece a, the back contact surface of the battery piece a conveyed by the first conveying mechanism 100 may be away from the conveying surface of the first conveying mechanism 100 as shown in fig. 1 and 2. Specifically, as shown in fig. 2, the battery piece a is placed on the conveying surface of the first conveying mechanism 100, and the back contact surface of the battery piece a faces away from the conveying surface of the first conveying mechanism 100. In practical application, the back contact surface of the battery piece A faces upwards.

As shown in fig. 2, since the back plate B corresponds to the plurality of battery pieces a, two first conveying mechanisms 100 may be provided, and the two first conveying mechanisms 100 are respectively located at two sides of the typesetting station, so as to provide the plurality of battery pieces a for the typesetting station at the same time. Of course, a plurality of loading stations may be disposed on the first conveying mechanism 100, so as to further increase the speed of providing the battery pieces a for the typesetting station.

As shown in fig. 2, the solar cell typesetting apparatus may further include a second conveying mechanism 200, where the second conveying mechanism 200 is configured to convey the back sheet B to the typesetting station. The second conveyance mechanism 200 may be a conveyor belt. The backboard B is placed on the conveyor belt and conveyed to the typesetting station by the conveyor belt. In practical applications, since the battery pieces a need to be mounted on the mounting surface of the backboard B, the mounting surface of the backboard B deviates from the conveying surface of the second conveying mechanism 200 in the process of conveying the backboard B, that is, the mounting surface of the backboard B faces upward.

As shown in fig. 2, the typesetting mechanism 323 is further provided with a hot-pressing device at the vacuum adsorption device, and the hot-pressing device is used for hot-pressing the battery piece a at the corresponding typesetting position.

Specifically, as shown in fig. 2, a hot-pressing device is integrated at the position of the vacuum adsorption device of the typesetting mechanism 323, and therefore, when the battery piece a is transported to the corresponding typesetting position of the back plate B by the typesetting mechanism 323, the battery piece a can be hot-pressed at the corresponding typesetting position by the hot-pressing device, and the production efficiency is improved.

As shown in FIG. 2, the number of flipping mechanisms 310 and typesetting mechanisms 323 can be set as desired. Each solar cell typesetting device can be provided with one turnover mechanism 310 and one typesetting mechanism 323, or can be provided with a plurality of turnover mechanisms. The number of the turnover mechanism 310 and the number of the typesetting mechanisms 323 may be set in a one-to-one correspondence, or may not be set in a correspondence, which is not limited to this.

In practical application, as shown in fig. 2, when a back contact solar cell module is produced, the first conveying mechanism 100 provides the cell sheet a to the loading station, and the second conveying mechanism 200 provides the back sheet B to the typesetting station. The turnover mechanism 310 turns the battery piece a from the corresponding feeding station to the transfer station 400, and the back contact surface of the battery piece a located at the transfer station 400 faces downward. The vacuum adsorption device of the typesetting mechanism 323 adsorbs the battery piece A, and the battery piece A is transferred to the corresponding typesetting position of the back plate B from the corresponding transfer station 400 under the drive of the moving device. And finally, the hot-pressing device on the typesetting mechanism 323 is used for hot-pressing the battery piece A at the corresponding typesetting position of the back plate B.

As shown in fig. 1 and 2, the turnover mechanism 310 is used to turn the battery piece a from the corresponding feeding station to the corresponding transfer station 400. Generally, when the battery piece a is conveyed by the conveying mechanism, the back contact surface of the battery piece a can be selected to face upward, that is, to face away from the conveying surface of the conveying mechanism, so as to avoid damaging the conductive material of the back contact surface of the battery piece a after the conveying surface of the conveying mechanism is contacted with the back contact surface of the battery piece a, which results in poor performance or rework of the battery piece a and influences on the production efficiency. When the back contact solar cell module is produced, the turnover mechanism 310 first turns the transferred cell a from the corresponding feeding station to the transfer station 400, so that the back contact surface of the cell a located in the transfer station 400 faces the direction of the plane of the back plate B. Then, the vacuum adsorption device of the typesetting mechanism 323 adsorbs the battery piece a, and the battery piece a is transferred from the corresponding transfer station 400 to the corresponding typesetting position of the back plate B under the drive of the moving device. Therefore, when the cell A is installed on the backboard B, the typesetting is firstly carried out through the typesetting mechanism 323, so that the offset of the back contact cell A and the backboard B in the alignment can be reduced, the automation of the back contact solar cell module is realized, the production efficiency of the back contact solar cell module is improved, and the production cost is reduced.

As a possible implementation manner, as shown in fig. 1 and fig. 2, the solar cell typesetting apparatus may further include: a first image collector 321, a second image collector 322, and a controller in communication with the first image collector 321, the second image collector 322, and the typesetting mechanism 323, respectively.

As shown in fig. 2, the first image collector 321 is configured to collect an image of the cell a when the cell a is located at the corresponding transfer station 400. The first image collector 321 may be an industrial camera, but is not limited thereto. The second image collector 322 is used for collecting the typesetting image of the typesetting position of the backboard B when the backboard B is located at the typesetting station. The second image collector 322 may be an industrial camera, but is not limited thereto. The controller is used for controlling the typesetting mechanism 323 to transfer the battery piece A to the corresponding typesetting position of the back plate B according to the image and the typesetting image of the battery piece A.

Specifically, as shown in fig. 2, when the back-contact solar cell module is produced, the turnover mechanism 310 turns the cell a over the transfer station 400, so that the back contact surface of the cell a faces downward, the first image collector 321 is controlled to collect the image of the cell a on the corresponding transfer station 400, and the image of the cell a is sent to the controller; controlling the second image collector 322 to collect the typesetting image of the backboard B and sending the typesetting image of the backboard B to the controller; the controller controls the typesetting mechanism 323 to typeset the battery piece A at the corresponding typesetting position of the backboard B according to the image of the battery piece A and the typesetting image of the backboard B.

As shown in fig. 2, after the turnover mechanism 310 places the cell a in the transfer station 400, the first image collector 321 collects an image of the cell a when the cell a is located in the corresponding transfer station 400. When the backboard B is located at the typesetting station, the second image collector 322 collects the typesetting image at the typesetting position of the backboard B. The controller controls the typesetting mechanism 323 to typeset the battery piece A at the corresponding typesetting position of the back plate B according to the image and the typesetting image of the battery piece A. Based on this, after conveying battery piece A and backplate B, the controller controls typesetting mechanism 323 according to the image of battery piece A and the typesetting image at the typesetting position to typeset battery piece A at the corresponding typesetting position of backplate B, even battery piece A and backplate B skew also not influenced in the transfer process, need not accurate backplate B and battery piece A's position when conveying, it is low to the device requirement of conveying battery piece A and backplate B, and make battery piece A and backplate B accurate to the counterpoint, the yields of back contact solar module has greatly been improved, and have stronger adaptability and flexibility to production environment and production condition, be adapted to various module types.

In an alternative, fig. 3 illustrates a schematic view of a turnover mechanism turning over a cell in an embodiment of the invention. As shown in fig. 3, the first image collector 321 may be disposed at the transfer station 400. The first image capturing devices 321 are disposed in one-to-one correspondence with the transfer stations 400. The first image collector 321 may collect images of the battery pieces a of the corresponding rotation stations.

In an alternative, FIG. 4 is a schematic diagram illustrating the position of the second image collector and the typesetting mechanism according to the embodiment of the invention. As shown in fig. 4, the second image collector 322 may be disposed at one end of the mobile device. Therefore, the moving device can drive the second image collector 322 to move, when the second image collector 322 is close to the corresponding typesetting position of the battery piece a, the second image collector 322 can collect the typesetting images at the corresponding typesetting position, which is convenient for the second image collector 322 to collect the typesetting images at different typesetting positions.

Specifically, as shown in fig. 4, the second image collector 322 may be disposed at a side surface of one end of the moving device, so as to avoid affecting the operation of the vacuum suction device.

In an alternative manner, as shown in fig. 3, the at least one turnover mechanism 310 may include a first vacuum suction plate 311, a first suction driving mechanism for driving the first vacuum suction plate 311 to suck the battery piece a, and a turnover driving mechanism 312 for driving the first vacuum suction plate 311 to turn over. The tumble drive mechanism 312 may be a rotary motor, but is not limited thereto.

Specifically, as shown in fig. 3, the feeding station and the transferring station are respectively located at two sides of the turnover driving mechanism 312. When the battery piece a is located at the feeding station, the turnover driving mechanism 312 may drive the first vacuum adsorption plate 311 to contact with the back contact surface of the battery piece a, and the first adsorption driving mechanism drives the first vacuum adsorption plate 311 to adsorb the back contact surface of the battery piece. Then, the turnover driving mechanism 312 drives the first vacuum absorption plate 311 to turn over by 180 °, so as to turn over the battery piece a from the corresponding feeding station to the transfer station 400. Finally, the first adsorption driving mechanism stops driving the first vacuum adsorption plate 311 to adsorb the back contact surface of the cell a, so that the back contact surface of the cell a located at the transfer station 400 faces downward, and the typesetting mechanism 323 can move the cell a to the back plate B through the front surface of the cell a.

In some embodiments, fig. 5 illustrates a schematic position diagram of the first image collector and the turnover mechanism in the embodiment of the present invention. As shown in fig. 5, the first vacuum absorption plate 311 may have a hollow portion, and a part of the cell a is absorbed at the hollow portion.

Specifically, as shown in fig. 5, a through hole may be formed in the first vacuum absorption plate 311, so that a portion of the first vacuum absorption plate 311 located at the through hole is a hollow portion. The size of the hollow portion is smaller than that of the battery piece A, so that the portion, located outside the hollow portion, of the battery piece A can be adsorbed by the first vacuum adsorption plate 311, and the connection stability of the first vacuum adsorption plate 311 and the battery piece A is guaranteed.

As shown in fig. 5, the first vacuum adsorption plate 311 has a hollow portion, and when the first vacuum adsorption plate 311 adsorbs the battery piece a, a portion of the back contact surface of the battery piece a having the conductive contact may be located in the hollow portion, so as to prevent the battery piece a from being contaminated or damaged after the conductive contact is contacted with the first vacuum adsorption plate 311.

As shown in fig. 5, when the solar cell typesetting apparatus includes the first image collector 321, and the first vacuum absorption plate 311 is at the transfer station 400, the first image collector 321 may be located below the hollow portion. Based on this, the first image collector 321 can collect the image of the back contact surface of the battery piece a through the hollow portion, so that the collected image is more accurate, and the first image collector 321 does not influence the operation of the turnover mechanism 310.

As a possible implementation manner, fig. 6 illustrates a schematic diagram of the cell transferred by the typesetting mechanism in the embodiment of the invention. As shown in fig. 6, the moving device may be a mechanical arm, and the mechanical arm may be a SCARA, a 6-axis robot or a cartesian three-axis robot, and the composition robots with different degrees of freedom are selected according to actual requirements and cost performance.

As a possible implementation manner, the vacuum adsorption device may include a second vacuum adsorption plate disposed at one end of the moving device, and a second adsorption driving mechanism that drives the second vacuum adsorption plate to adsorb the battery piece. When the battery piece is adsorbed, the second adsorption driving mechanism drives the second vacuum adsorption plate to adsorb the battery piece; after the battery piece is moved to the destination by the moving device, the second vacuum adsorption plate is stopped from being driven by the second adsorption driving mechanism, so that the battery piece is placed at the destination.

Fig. 7 is a schematic diagram illustrating another solar cell layout apparatus according to an embodiment of the present invention. As shown in fig. 7, the mounting surface of the backboard B has a plurality of layout areas, and each layout area has at least one layout position. When the solar cell typesetting equipment comprises the second conveying mechanism 200, the number of the solar cell typesetting equipment is multiple, the multiple solar cell typesetting equipment are distributed along the conveying direction of the second conveying mechanism 200, and the adjacent solar cell typesetting equipment is connected through the second conveying mechanism 200. Each solar cell typesetting device is used for typesetting the cell A in the corresponding typesetting area.

Taking the layout of 144 half pieces of back contact solar modules as an example, each piece of cell corresponds to one layout position on the back panel, and the plurality of layout positions on the mounting surface of the back panel are divided into a plurality of layout areas. Such as, but not limited to, 9 x 16 or 6 x 24. As shown in fig. 7, taking 6 × 24 as an example, 6 layout areas are divided on the mounting surface of the backplane, and each layout area has 24 layout positions. And 6 pieces of solar cell typesetting equipment are arranged, and the cells in the corresponding typesetting area of each piece of solar cell typesetting equipment are typeset.

As shown in fig. 7, in order to improve the layout efficiency of each solar cell layout apparatus, each solar cell layout apparatus may include a plurality of layout mechanisms 323. For example, each solar cell typesetting device comprises 4 typesetting mechanisms 323, and each typesetting mechanism 323 is responsible for typesetting at 6 typesetting positions. The 6 typesetting positions in charge of each typesetting mechanism 323 are set to be continuous in position to form one typesetting unit. That is, in each typesetting station, each typesetting mechanism 323 fixes the typesetting unit set for typesetting, and 4 typesetting mechanisms 323 typeset simultaneously. After the layout of the layout region is completed, the backboard B is conveyed to the next layout station by the second conveying mechanism 200, and another layout region is laid out by the 4 layout mechanisms 323 in the next layout station. This operation was repeated until 144 cells a were lined up in the back panel B position.

As shown in fig. 7, the second conveying mechanisms 200 of the adjacent solar cell typesetting apparatuses are connected, and the back sheet B can be conveyed to the typesetting position of each solar cell typesetting apparatus in sequence. In addition, the mounting surface of the back plate B is provided with a plurality of typesetting areas, and each solar cell typesetting device is used for typesetting the cell A in the corresponding typesetting area. Therefore, after the solar cell typesetting equipment completes typesetting in the corresponding typesetting area, the back panel B is conveyed to the next typesetting station by the second conveying mechanism 200, and the subsequent solar cell typesetting equipment typesets in the corresponding typesetting area in sequence, so that the typesetting of the back panel B is completed. Each solar cell typesetting device is only responsible for the corresponding typesetting area, not only does not need complicated steps of alignment, adjustment and the like, but also reduces the interference among the typesetting mechanisms 323, thereby improving the production efficiency.

The embodiment of the invention also provides manufacturing equipment of the solar cell module, which comprises the solar cell typesetting equipment. The beneficial effects of the manufacturing equipment of the solar cell module are the same as those of the solar cell typesetting equipment, and are not repeated here.

The embodiment of the invention also provides a typesetting method of the solar cell, which is applied to the typesetting equipment of the solar cell. The typesetting method of the solar cell comprises the following steps:

and S100, controlling at least one turnover mechanism to be in contact with the back contact surface of the battery piece, and turning the battery piece from the corresponding feeding station to the transferring station, so that the back contact surface of the battery piece positioned at the transferring station faces the direction of the plane of the back plate.

And S200, controlling at least one typesetting mechanism to adsorb the front side of the battery piece through a vacuum adsorption device, and transferring the battery piece from the corresponding transfer station to the corresponding typesetting position of the back plate through a moving device.

As a possible implementation manner, when the solar cell typesetting apparatus includes a first image collector, a second image collector and a controller, the step S200 may include:

and step S210, controlling at least one first image collector to collect the image of the back contact surface of the battery piece on the corresponding transfer station, and sending the image of the back contact surface of the battery piece to the controller.

And controlling at least one second image collector to collect the typesetting image of the typesetting position of the backboard and sending the typesetting image to the controller.

And S220, controlling the typesetting mechanism to transfer the battery pieces to the corresponding typesetting positions of the back plate by the controller according to the images of the back contact surfaces of the battery pieces and the typesetting images.

It should be noted that, in step S210, "control at least one first image collector to collect the image of the back contact surface of the battery piece at the corresponding transfer station, and send the image of the back contact surface of the battery piece to the controller. And controlling at least one second image collector to collect the typesetting images of the typesetting positions of the back plates and sending the typesetting images to the controller. "not in sequence, but also simultaneously.

In an alternative manner, the step S220 may include:

step S221: comparing the image of the back contact surface of the battery piece with the reference battery piece image to determine the offset parameter of the battery piece; and comparing the typesetting image with the reference typesetting image, and determining the offset parameter of the typesetting position.

Step S222: and the controller determines the offset parameters of the battery pieces at the corresponding typesetting positions of the backboard according to the offset parameters of the battery pieces and the offset parameters of the typesetting positions.

Step S223: the controller controls the typesetting mechanism to transfer the battery pieces to the corresponding typesetting positions of the back plate according to the offset parameters.

It should be noted that, in step S221, the "comparing the image of the back contact surface of the cell with the reference cell image to determine the offset parameter of the cell" and the "comparing the layout image with the reference layout image to determine the offset parameter of the layout position" may be performed simultaneously or not in sequence.

In practical application, the typesetting logic can be set up first, and each typesetting mechanism typesets each cell piece at the corresponding typesetting position in sequence. Thus, each cell has theoretical coordinates on the back plate.

After the battery pieces are transferred and turned over, the positions of the battery pieces may be shifted from the preset positions. After the backboard is conveyed, the typesetting position on the backboard can also deviate from the preset position.

Therefore, the reference cell image may be preset. For example, the shooting angle of the first image collector is fixed every time the first image collector collects an image, so that an image with a non-offset battery slice is used as a reference battery slice image. After the actual image of the back contact surface of the battery piece is collected, if the battery piece deviates in the transferring and overturning processes, the position of the battery piece at the transfer station is different from the preset position, the image of the back contact surface of the battery piece can be compared with the reference battery piece image, and the deviation parameter of the battery piece is determined. If the battery piece is not deviated, the deviation parameter is 0.

The reference layout image may also be preset. For example, the shooting angle at each time the second image collector collects the images is made fixed, so that the images whose layout positions of the back plates are not shifted are taken as reference layout images. After the typesetting image at the actual typesetting position is collected, if the backboard shifts in the transmission process, the typesetting position is different from the preset position, and the shift parameter of the typesetting position can be determined by comparing the typesetting image with the reference typesetting image. If the typesetting position is not shifted, the shift parameter is 0.

And finally, determining the offset parameters of the battery pieces at the corresponding typesetting positions of the back plate according to the offset parameters of the battery pieces and the offset parameters of the typesetting positions, so as to adjust the theoretical coordinates of the battery pieces on the back plate, obtain the actual coordinates of the battery pieces on the back plate, and accurately align the battery pieces with the typesetting positions.

As a possible implementation manner, when the turnover mechanism includes the first vacuum adsorption plate, the first adsorption driving mechanism, and the turnover driving mechanism, the step S100 includes:

and step S110, controlling the first adsorption driving mechanism to drive the first vacuum adsorption plate to adsorb the back contact surface of the cell.

And step S120, controlling the turnover driving mechanism to drive the first vacuum adsorption plate to turn over, and turning over the battery piece from the corresponding feeding station to the transferring station.

Step S130, controlling the first suction driving mechanism to stop driving the first vacuum suction plate to suck the back contact surface of the cell, so that the back contact surface of the cell located at the transfer station faces the direction of the plane where the back plate is located.

As a possible implementation manner, the back contact surface of the at least one battery piece is provided with a plurality of first mark points. Based on the method, the offset of the battery piece can be determined by determining the offset of the first mark points, so that the speed of determining the offset of the battery piece is increased, and the working efficiency is improved. When the image of the back contact surface of the battery piece needs to be compared with the reference battery piece image to determine the offset parameter of the battery piece, the offset parameters of the first mark points can be determined by comparing the positions of the first mark points in the image, so that the offset parameter of the battery piece can be rapidly determined.

The back contact surface of at least one battery piece is provided with a plurality of first conductive parts and a plurality of first insulating parts. The first conductive portion may be a conductive contact. The plurality of first insulating portions may be connected as a whole.

The at least one first marker may be located at the respective first conductive portion or the respective first insulating portion. When the first mark point is arranged on the first insulating part, the first mark point does not influence the electric connection of the battery piece and the back plate, and the influence caused by the arrangement of the first mark point is reduced.

When the first mark point is disposed on the first insulating portion, the first mark point may be a conductive material. Note that the conductive material on the first insulating portion is not conductive. Based on this, when a plurality of conducting materials are printed on the back contact surface of the battery piece to form the conducting contact, the conducting material can be arranged at the first mark point position of the first insulating part at the same time, so that the conducting material positioned at the first insulating part forms the first mark point, the first mark point is not required to be arranged in an extra process, the production efficiency is improved, and the cost is saved.

As a possible implementation manner, the mounting surface of the back plate has a plurality of second mark points. Based on the method, the offset of the typesetting position can be determined by determining the offsets of the plurality of second mark points, so that the speed of determining the offsets of the typesetting position is increased, and the working efficiency is improved.

When the typesetting image needs to be compared with the reference typesetting image to determine the offset parameter of the typesetting position, the offset parameters of the second mark points can be determined by comparing the positions of the second mark points in the image, so that the offset parameter of the typesetting position can be quickly determined.

Wherein the at least one back plate has a plurality of second conductive parts and a plurality of second insulating parts. An opening is formed in the insulating layer of the back plate corresponding to the conductive contact of the battery piece, and the conductive layer is exposed out of the opening, so that a second conductive part is formed. The other area of the back plate is a second insulating part.

At least one second marking point is located on the corresponding second conductive part or the corresponding second insulating part. When the second mark point is arranged on the second insulating part, the second mark point does not influence the electric connection between the battery piece and the back plate, and the influence caused by the arrangement of the second mark point is reduced.

In one embodiment, at least one second marker point is arranged on one side of the conductive layer close to the insulating layer. For example, a pattern may be drawn on the conductive layer as a second marker point using a laser. The shape of the second marker point may be a cross, a circle, a triangle, a rectangle, or any other shape. The opening of the insulating layer, which is provided with the second mark point, is more than 1.1 times of the opening which is not provided with the second mark point, so that the second mark point can be more conveniently identified. When the second mark point is positioned on the second insulating part, the second mark point is arranged in the area of the conducting layer which is not connected with the conducting contact, and the insulating layer is positioned on the position of the second mark point and provided with the opening for exposing the second mark point.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.