CN221466596U

CN221466596U - Double-sided tectorial membrane battery cluster group cluster equipment

Info

Publication number: CN221466596U
Application number: CN202323234418.2U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Wuxi Autowell Technology Co Ltd
Current assignee: Wuxi Autowell Technology Co Ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-08-02
Anticipated expiration: 2033-11-29

Abstract

The application provides a double-sided film-covered battery string equipment, which comprises a conveying device, a welding strip processing device, a battery piece supply device, a front film supply device, a back film supply device, a first transfer device and a second transfer device, wherein: the conveying device is provided with a first laying position and a second laying position; the first transfer device lays the (i+1) th back adhesive film to the first laying position; the welding strip treatment device is used for paving an (i+1) th welding strip group to the first paving position and the second paving position; the second transfer device is used for laying an ith positive adhesive film to the second laying position and laying an (i+1) th battery piece to the first laying position; the conveying device steps backwards by a preset distance, so that the (i+1) th back adhesive film and the (i+1) th battery piece step from the first laying position to the second laying position to vacate the first laying position. According to the application, the welding strip is adhered to the battery piece through the adhesive film, so that the binding force between the welding strip and the battery piece is improved, and the welding strip is prevented from being separated from the battery piece in the carrying process.

Description

Double-sided tectorial membrane battery cluster group cluster equipment

Technical Field

The application relates to the field of photovoltaic module preparation, in particular to a double-sided film-covered battery string device.

Background

In the conventional battery plate, the front and back sides of the battery plate are respectively printed with a transverse secondary grid line and a longitudinal primary grid line which are used for collecting current, and the width of the primary grid line is much wider than that of the secondary grid line.

Because a large amount of surface area of the battery piece is occupied by the main grid line, the light receiving area of the battery piece is greatly reduced, and finally the photoelectric conversion efficiency of the battery piece is limited. In view of this, the industry has proposed a novel no main grid (0 BB) battery piece, has only printed the auxiliary grid line on the front and the back of no main grid battery piece, compares in traditional battery piece, and no main grid battery piece's photoelectric conversion efficiency has obtained showing and has promoted, in addition, owing to do not have main grid, has reduced the use amount of silver thick liquid, and the cost of battery piece has also obtained reducing by a wide margin.

However, since there is no primary grid on the battery, in order to collect the current collected by all the secondary grids on the battery, it is required that the solder strip is electrically connected to each secondary grid line. By adopting a traditional string assembling mode of welding the welding strip onto the battery piece without the main grid, the welding strip and the auxiliary grid line cannot form firm connection, the bonding force between the welding strip and the battery piece without the main grid is poor, and the welding strip is easy to separate from the battery piece without the main grid in the subsequent battery string carrying process, so that the production quality of the battery string and the production and the manufacture of a battery assembly are finally affected.

Disclosure of utility model

Aiming at the technical problems of the prior battery piece series welding machine, the application provides a double-sided film-covered battery series string device, which has the following detailed technical scheme:

The utility model provides a two-sided tectorial membrane battery cluster group cluster equipment for concatenate the battery piece into battery cluster, two-sided tectorial membrane battery cluster group cluster equipment includes conveyor, welding area processing apparatus, battery piece supply device, front membrane supply device, back membrane supply device, first transfer device and second transfer device, wherein:

The conveying device is provided with a first laying position and a second laying position, and the second laying position is positioned behind the first laying position;

the battery piece supply device is used for supplying battery pieces, the front film supply device is used for supplying a front adhesive film, and the back film supply device is used for supplying a back adhesive film; the first transfer device is used for acquiring the (i+1) th back adhesive film from the back film supply device and laying the (i+1) th back adhesive film to the first laying position, wherein i is a natural number larger than 0;

The welding strip processing device is used for paving an (i+1) th welding strip group to the first paving position and the second paving position, wherein the second half section of the (i+1) th welding strip group is placed on the (i+1) th back adhesive film, and the first half section of the (i+1) th welding strip group is placed on the (i) th battery piece positioned at the second paving position;

The second transfer device is used for acquiring an ith front adhesive film from the front film supply device, acquiring an (i+1) th battery piece from the battery piece supply device, laying the ith front adhesive film to the second laying position, and laying the (i+1) th battery piece to the first laying position;

The second transfer device is also used for compacting and bonding the ith positive adhesive film on the ith battery piece and the (i+1) th welding strip group which are positioned at the second laying position;

The conveyor is configured to step back a predetermined distance such that the i+1th back side adhesive film and the i+1th battery sheet step from the first lay-down position to the second lay-down position to free the first lay-down position.

The application provides a double-sided film-covered battery string device, which is characterized in that a back adhesive film and a front adhesive film are inserted in the laying and stacking process of battery pieces and a welding strip set, so that the corresponding welding strip set can be adhered to the corresponding battery pieces after the adhesive films are laid, and the adhesive strength of the adhesive films is greater than the connecting force of the welding strip and the battery pieces after welding, so that the welding strip and the battery pieces are prevented from being separated in the conveying process after stringing, and meanwhile, the welding process can be canceled, and the production cost is saved.

In some embodiments, the second transfer device comprises a movement mechanism, a base, a battery sheet pick-up portion, and a film pick-up portion, wherein: the base is connected to the driving end of the moving mechanism, the battery piece picking part and the adhesive film picking part are arranged on the base at intervals side by side, and the moving mechanism is used for driving the battery piece picking part and the adhesive film picking part to move synchronously; the battery piece picking part is used for picking up the battery piece from the battery piece supply device and releasing the picked battery piece to a first laying position of the conveying device; the adhesive film pick-up part is used for picking up the front adhesive film from the front film supply device and compacting and bonding the picked-up front adhesive film on the battery piece positioned at the second laying position of the conveying device.

By providing the second transfer device to include the battery piece pickup portion and the adhesive film pickup portion, the second transfer device lays one front film onto another battery piece at the second laying position while laying one battery piece onto the back adhesive film at the first laying position, thereby improving the stringing efficiency.

In some embodiments, the battery cell picking portion includes a first connection plate and a first suction plate, wherein: the first connecting plate is arranged on the base; the first adsorption plate is connected to the first connecting plate, and the moving mechanism is used for driving the first adsorption plate to lift so as to drive the first adsorption plate to pick up the battery piece and lay the battery piece to a first laying position, and a first heating piece for heating the battery piece is arranged on the first adsorption plate.

Through setting up including first connecting plate and first absorption board to battery piece pickup part for battery piece pickup part has realized the absorption transport to the battery piece. Through setting up first heating piece on first adsorption plate for first adsorption plate can implement the heating to the battery piece, so, when laying the positive glued membrane on the battery piece, release viscidity after the positive glued membrane is heated by the battery piece, thereby bonds the first half section of welding the band group on the front of battery piece.

In some embodiments, the film pick-up portion includes a second connection plate and a second adsorption plate, wherein: the second connecting plate is arranged on the base; the second adsorption plate is connected to the second connecting plate, and the moving mechanism is further used for driving the second adsorption plate to lift so as to drive the second adsorption plate to pick up the front adhesive film and lay the front adhesive film to a second laying position, and a second heating piece for heating the front adhesive film is arranged on the second adsorption plate.

Through setting up the glued membrane pick up portion to including second connecting plate and second adsorption plate for glued membrane pick up portion has realized the absorption transport to the positive glued membrane. Through setting up the second heating piece on the second adsorption plate, make the second adsorption plate can implement the heating to the positive glued membrane, can release the viscidity after the positive glued membrane is heated, so, ensure that when the positive glued membrane was laid to second position department of laying, with the first half section bonding of welding the band group on the front of battery piece, improved machining efficiency.

In some embodiments, the second heating member heats the front adhesive film in the process that the adhesive film pick-up part transfers the front adhesive film from the front adhesive film supply device to the second laying position of the conveying device; or after the adhesive film pick-up part transfers the front adhesive film to a second laying position of the conveying device, the adhesive film pick-up part compresses the front adhesive film on the welding belt group and the battery piece, and the second heating part heats the front adhesive film.

The adhesive film pick-up part is used for heating the front adhesive film after the front adhesive film is laid to the second laying position in the process of carrying the front adhesive film, so that the front half section of the welding belt group is adhered to the front surface of the battery piece after the front adhesive film releases the viscosity. The adhesive film pick-up part heats the front adhesive film in the carrying process, so that the viscosity of the front adhesive film is released in advance, and when the front adhesive film is laid to the second laying position by the adhesive film pick-up part, the front adhesive film is immediately adhered to the front of the battery piece, thereby further improving the string assembling efficiency.

In some embodiments, the second transfer device further includes a heat shield mounted on at least one of the first and second adsorption plates, the heat shield for blocking heat generated by at least one of the first and second heating members from being transferred to an adjacent component.

Through setting up the insulating part, realized the thermal-insulated between first heating part and the second heating part to make battery piece pick up portion and glued membrane pick up portion can not interfere each other and implement the heating to battery piece, glued membrane, avoided the adjacent part of heating part damage.

In some embodiments, the second transfer device further includes a temperature sensor for periodically measuring a temperature of the front adhesive film when the front adhesive film is heated by one of the first heating member and the second heating member, and a temperature controller for adjusting a power of at least one of the first heating member and the second heating member according to the temperature measured by the temperature sensor.

Through the cooperation of temperature sensor and temperature controller, realized the regulation to the heating power of at least one of first heating piece, second heating piece to make battery piece or second adsorption plate can be with the positive glued membrane heated to target temperature. At least one of the second heating piece and the first heating piece can be subjected to real-time temperature control, so that the front adhesive film can reach the target temperature range after each processing, and the yield is improved.

In some embodiments, the second transfer device further comprises a separation driving piece, at least one of the battery piece picking part and the adhesive film picking part is connected on the base in a sliding way and connected with the movable end of the separation driving piece; the spacing driving piece is used for driving at least one of the battery piece picking part and the adhesive film picking part to slide so as to adjust the distance between the battery piece picking part and the adhesive film picking part.

Through setting up the branch apart from driving piece, realized the interval adjustment to between battery piece pick up portion and the glued membrane pick up portion, so, can make battery piece pick up portion and glued membrane pick up portion adjust the battery piece of picking up and positive glued membrane to the required target value of group's cluster, ensure that the battery piece can be laid to first position of laying accurately, positive glued membrane is laid to the second position of laying accurately.

In some embodiments, the battery piece supply device comprises a feeding station and a regulating mechanism, wherein the battery piece supply device is used for conveying the battery pieces to the feeding station, the regulating mechanism is used for correcting the positions of the battery pieces positioned at the feeding station, and the second transferring device is used for picking up the battery pieces positioned at the feeding station and corrected.

Through setting up battery piece supply device, realized the automatic feed to the battery piece to and realized the position correction to the battery piece, adjust the interval of battery piece and corresponding positive glued membrane of feed station department into the required target value of group cluster, ensure that the second transfer device can obtain the battery piece smoothly.

In some embodiments, the second transfer device comprises two groups of battery piece picking parts and adhesive film picking parts, and the two groups of battery piece picking parts and the adhesive film picking parts are arranged on the base at a parallel interval; the battery piece supply device and the front film supply device are positioned on the same straight line, and the battery piece supply device is positioned at the rear of the front film supply device; the spacing between the first group of battery piece picking parts and the adhesive film picking parts and the spacing between the second group of battery piece picking parts and the adhesive film picking parts are the same as the spacing between the conveying device and the battery piece supply device as well as the spacing between the conveying device and the front surface film supply device; the first battery piece picking part and the adhesive film picking part pick up the second battery piece and the second front adhesive film when releasing the first battery piece and the first front adhesive film to the conveying device; the moving mechanism drives the two groups of battery piece picking parts and the adhesive film picking part to simultaneously rise to a preset height and then rotate 180 degrees, and then drives the two groups of battery piece picking parts and the adhesive film picking part to descend, the second group of battery piece picking parts and the adhesive film picking part release the second battery piece and the second front adhesive film to the conveying device, and the first group of battery piece picking parts and the adhesive film picking part pick up the third battery piece and the third front adhesive film.

By arranging the second transfer device to comprise two groups of battery piece picking parts and adhesive film picking parts, the two groups of battery piece picking parts and the adhesive film picking parts can alternately pick up battery pieces and front adhesive films and alternately lay the picked battery pieces and the front adhesive films on the conveying device, so that the working efficiency is further improved.

In some embodiments, the double-sided film-covered battery string device further comprises a hot pressing device, the conveying device is provided with a hot pressing position located at the back of the second laying position, the conveying device is further used for conveying the battery strings located at the second laying position to the hot pressing position, and the hot pressing device is used for fixing the battery strings located at the hot pressing position in a hot pressing mode.

Through setting up hot press unit, realized the hot pressing to the battery cluster of laying to make back glued membrane and front glued membrane can further release the viscidity, in order to ensure that the bonding strength between glued membrane and the battery piece accords with the requirement of follow-up process.

In some embodiments, at least one of the first lay-up position and the second lay-up position of the conveyor is provided with a third heating element for heating the backing adhesive film.

By arranging the third heating element at least one of the first laying position and the second laying position of the conveying device, the laid back adhesive film can be heated, so that the back adhesive film releases the viscosity, and the second half section of the corresponding welding band group is adhered to the back of the battery piece in the process of assembling the string.

In some embodiments, the double-sided film-covered battery string device further comprises a cooling device mounted on a conveying device, the conveying device is provided with a cooling position located behind the second laying position, the conveying device is further used for conveying the battery strings located at the second laying position to the cooling position, and the cooling device is used for cooling the battery strings located at the cooling position.

Through the cooling device on the conveying device, the battery strings bonded into strings are cooled, the cooled battery strings can be directly conveyed to the subsequent process, the natural cooling of the battery strings does not need to be performed in additional time and the like, and the working efficiency is improved.

In some embodiments, the front film supply device includes a front film discharging part and a front film processing part, wherein the front film discharging part is used for supplying the film to the front film processing part, the front film processing part is used for outputting and cutting the film to obtain the front film with a predetermined length, and the second transfer device picks up the front film with the predetermined length from the front film processing part; the back film supply device comprises a back film discharging part and a back film processing part, wherein the back film discharging part is used for supplying a film to the back film processing part, the back film processing part is used for cutting the film to obtain a back film with a preset length, and the first transfer device picks up the back film with the preset length from the back film processing part.

Through the cooperation of positive glued membrane blowing portion and positive glued membrane processing part, positive glued membrane supply arrangement has realized the automatic preparation to positive glued membrane. Through the cooperation of back glued membrane blowing portion and back glued membrane processing portion, back glued membrane supply arrangement has realized the automatic preparation to the front glued membrane.

In some embodiments, the front adhesive film processing part comprises a guide roller set, a pressing mechanism, a slitting mechanism, a traction mechanism and a middle rotary table which are sequentially arranged, wherein: the guide roller set is used for guiding the adhesive film discharged by the front adhesive film discharging part, so that the adhesive film sequentially passes through the pressing mechanism and the slitting mechanism; when the adhesive film with the preset length passes through the slitting mechanism, the pressing mechanism presses the adhesive film, the slitting mechanism cuts off the adhesive film to obtain the adhesive film with the preset length, and the traction mechanism pulls the adhesive film with the preset length onto the turntable; the transfer table is configured to move back and forth between the material receiving station and the feeding station, the transfer table moves to the feeding station after receiving the front adhesive film sent by the traction mechanism at the material receiving station, the transfer table is further configured to fix the received front adhesive film through negative pressure adsorption, and the transfer table returns to the material receiving station after picking up the front adhesive film at the feeding station to continuously receive the front adhesive film.

Therefore, the front adhesive film processing part realizes automatic preparation and supply of the front adhesive film through the cooperation of the guide roller set, the pressing mechanism, the slitting mechanism, the traction mechanism and the middle rotary table.

In some embodiments, the traction mechanism is further used for pulling the end part of the adhesive film penetrating from the adhesive film, so that the adhesive film with the preset length penetrates out of the slitting mechanism; or the pressing mechanism is also used for pressing the adhesive film and pushing the adhesive film towards the slitting mechanism so that the adhesive film with the preset length passes out of the slitting mechanism.

The adhesive film with the preset length can be ensured to pass through the slitting mechanism by the traction of the traction mechanism or the pushing of the pressing mechanism so as to obtain the front adhesive film with the preset length. Compared with the traction by the traction mechanism, the adhesive film is pushed by the pressing mechanism, so that the avoidance of the traction mechanism to the turntable is realized, and the traction mechanism is prevented from colliding with the turntable.

In some embodiments, the battery piece supply apparatus includes a battery piece feeding mechanism, a battery piece conveying mechanism, a detection mechanism, and a NG piece rejection mechanism, wherein: the battery piece feeding mechanism is used for feeding the battery pieces onto the battery piece conveying mechanism, the battery piece conveying mechanism is used for conveying the battery pieces towards the conveying device, and at least a detection station, a rejection station and a feeding station are sequentially arranged on a conveying path of the battery piece conveying mechanism; the detection mechanism is arranged at the detection station and used for detecting the battery piece conveyed to the detection station; the NG sheet removing mechanism is positioned at the removing station and used for removing the NG battery sheets which are unqualified in detection from the battery sheet conveying mechanism; the second transfer device picks up the battery sheet from the feed station.

By arranging the battery piece supply device, the battery piece supply device realizes quality detection of the battery pieces before the battery pieces are laid, and ensures that the battery piece supply device only supplies qualified battery pieces to the feeding station.

In some embodiments, the solder strip processing apparatus includes a solder strip supply mechanism, a solder strip clamping mechanism, a solder strip cutting mechanism, and a solder strip traction mechanism, which are sequentially arranged, wherein: the welding strip supply mechanism is used for supplying a plurality of parallel welding strips; the welding strip traction mechanism is configured to traction a plurality of welding strips, so that the welding strips sequentially pass through the welding strip clamping mechanism and the welding strip cutting mechanism; when the welding strip between the welding strip cutting mechanism and the welding strip traction mechanism reaches a preset length, the welding strip clamping mechanism is configured to clamp the welding strip, and the welding strip cutting mechanism is configured to cut off the welding strip so as to obtain a welding strip group comprising a plurality of welding strips with preset lengths; the welding strip traction mechanism is used for paving the welding strip groups to a first paving position and a second paving position.

The welding strip processing device realizes automatic preparation of the welding strip group with a preset length and automatically lays the welding strip group to a first laying position and a second laying position through the matching of the welding strip supply mechanism, the welding strip clamping mechanism, the welding strip cutting mechanism and the welding strip traction mechanism.

Drawings

Fig. 1 is a schematic top view of a double-sided film-covered battery string device according to an embodiment of the present application;

fig. 2 is a schematic side view of a double-sided film-covered battery string device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a second transfer device according to an embodiment of the present application;

FIG. 4 is a schematic view of a second transfer device according to another embodiment of the present application;

FIG. 5 is a schematic view of a second transfer device according to another embodiment of the present application;

FIG. 6 is a schematic view of a front side film supply apparatus according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a placement process of a cell string without a primary grid in an embodiment of the application;

Fig. 1 to 7 include:

conveying device 1:

A first laying station A and a second laying station B;

Welding strip processing device 2:

A solder ribbon supply mechanism 21, a solder ribbon clamping mechanism 22, a solder ribbon cutting mechanism 23, and a solder ribbon traction mechanism 24;

Battery piece supply device 3:

a battery piece feeding mechanism 31 and a battery piece conveying mechanism 32;

A feeding station C;

Positive film supply device 4:

The guide roller set 41, the pressing mechanism 42, the slitting mechanism 43, the traction mechanism 44 and the transfer table 45;

Back film supply device 5:

The second transfer device 6:

a base 61;

a battery piece pickup section 62;

A film pick-up section 63: a second connection plate 631, a second adsorption plate 632, a heating rod 633, a heating paste 634, a vacuum pipeline 635, an adsorption hole 636, and a fine adjustment lifting part 637;

A pitch drive 64;

a slider 65;

A slide rail 66;

back adhesive film 10, solder tape set 20, battery plate 30, and front adhesive film 40.

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.

By adopting a traditional string assembling mode of welding the welding strip onto the battery piece without the main grid, the welding strip and the auxiliary grid line cannot form firm connection, the bonding force between the welding strip and the battery piece without the main grid is poor, and the welding strip is easy to separate from the battery piece without the main grid in the subsequent battery string carrying process, so that the production quality of the battery string and the production and the manufacture of a battery assembly are finally affected.

The battery piece is connected in series into a battery string through the welding band group and the adhesive film. The battery piece related to the application generally refers to a battery piece without a main grid in the industry, but can also be other battery pieces which can apply the string combination method in the application, and the size of the battery piece can be a whole battery piece, or can be half pieces, three pieces and the like formed by a dicing machine. The solder strip set referred to in the present application generally comprises a plurality of parallel solder strips within the industry, the radial cross section of which may be at least one of circular, flat, triangular or anisotropic and combinations of a plurality thereof. The adhesive film according to the present application generally comprises a substrate and an adhesive layer in the industry, and may also be made of modified eva. The adhesive film related to the application can be adhered to the target material through materials such as hot melt adhesive, uv adhesive or pressure sensitive adhesive.

As shown in fig. 1 and 2, the double-sided film-covered battery string device in the embodiment of the application includes a conveying device 1, a solder strip processing device 2, a battery piece supplying device 3, a front film supplying device 4, a back film supplying device 5, a first transferring device (not shown in the drawings), and a second transferring device 6, wherein:

The conveyor device 1 is provided with a first laying position and a second laying position, wherein the second laying position is positioned behind the first laying position.

The battery piece supply device 3 is used for supplying battery pieces, the front surface film supply device 4 is used for supplying a front surface adhesive film, and the back surface film supply device 5 is used for supplying a back surface adhesive film. The first transfer device is used for acquiring the (i+1) th back adhesive film from the back adhesive film supply device 5 and laying the (i+1) th back adhesive film to the first laying position A, wherein i is a natural number larger than 0.

The welding strip processing device 2 is used for paving an i+1th welding strip group to the first paving position A and the second paving position B, wherein the second half section of the i+1th welding strip group is placed on the i+1th back adhesive film, and the first half section of the i+1th welding strip group is placed on the i battery piece positioned at the second paving position B.

The second transfer device 6 is used for acquiring the ith front adhesive film from the front film supply device 4, acquiring the (i+1) th battery piece from the battery piece supply device 4, laying the ith front adhesive film to the second laying position B, and laying the (i+1) th battery piece to the first laying position A.

The second transfer device 6 is further used for pressing and adhering the ith front adhesive film to the ith battery piece and the (i+1) th welding strip group at the second laying position B.

The conveyor device 1 is configured to step back a predetermined distance such that the i+1th back side adhesive film and the i+1th battery sheet step from the first deposit position a to the second deposit position B to free the first deposit position a.

In order to enable those skilled in the art to more clearly understand the working process of the double-sided film covered battery string device in the embodiment of the present application, the following will describe the laying process of the back side adhesive film 10, the welding set 20, the battery piece 30 and the front side adhesive film 40 in the embodiment of the present application with reference to fig. 7:

As shown in fig. 7 (a), in the initial state, both the first laying position a and the second laying position B of the conveying device 1 are in the idle state.

As shown in (b) of fig. 7, the first transfer device takes the 1 st back adhesive film 10 from the back film supply device 5, and lays down the 1 st back adhesive film 10 to the first laying position a.

As shown in fig. 7 (c), the tape handling device 2 lays the 1 st tape set to the first laying position a and the second laying position B, wherein the second half of the 1 st tape set is placed on the 1 st back side adhesive film, and the first half of the 1 st tape set is placed on the conveyor 1.

As shown in (d) of fig. 7, the second transfer device 6 takes the 1 st battery piece 30 from the battery piece supply device 4 and lays the 1 st battery piece 30 to the first laying position a such that the 1 st back adhesive film 10 adheres the rear half of the 1 st solder strip group 20 to the back of the 1 st battery piece 30.

As shown in (e) of fig. 7, the conveyor 1 steps a predetermined distance backward so that the 1 st back side adhesive film 10 and the 1 st battery sheet 30 step from the first laying position a to the second laying position B to free the first laying position a.

As shown in (f) of fig. 7, the first transfer device 6 takes the 2 nd back adhesive film 10 from the back adhesive film supply device 5, and lays down the 2 nd back adhesive film 10 to the first lay-down position a.

As shown in fig. 7 (g), the tape handling device 2 lays the 2 nd tape set 20 to the first lay-down position a and the second lay-down position B, wherein the second half of the 2 nd tape set is placed on the 2 nd back side adhesive film 10, and the first half of the 2 nd tape set is placed on the 1 st battery cell 30 located at the second lay-down position B.

As shown in (h) of fig. 7, the second transfer device 6 acquires the 1 st front adhesive film 40 from the front film supply device 4, and acquires the 2 nd battery sheet 30 from the battery sheet supply device 4. The second transfer device 6 lays down and presses the picked 1 st front adhesive film 40 onto the 1 st battery piece located at the second laying position B, so that the 1 st front adhesive film 40 adheres the first half section of the 2 nd solder strip group to the front face of the 1 st battery piece. In addition, the second transfer device 6 lays the picked-up 2 nd battery piece 30 to the first laying position a such that the 2 nd adhesive film 10 adheres the second half of the 2 nd solder tape group 20 to the back of the 2 nd battery piece 30.

As shown in (i) of fig. 7, the conveyor 1 steps a predetermined distance backward so that the 2 nd adhesive film 10 and the 2 nd battery sheet 30 step from the first laying position a to the second laying position B to free the first laying position a.

Repeating the steps until the placement of all the back adhesive films, the welding strip groups, the battery pieces and the front adhesive films is completed, and obtaining the battery strings.

The application provides a double-sided film-covered battery string device, which is characterized in that a back adhesive film and a front adhesive film are inserted in the laying and stacking process of battery pieces and a welding strip set, so that the corresponding welding strip set can be adhered to the corresponding battery pieces after the adhesive films are laid.

As shown in fig. 3, the second transfer device 6 may optionally include a moving mechanism (not shown in the drawings), a base 61, a battery piece pickup section 62, and a film pickup section 63, wherein: the base 61 is connected to a driving end of a moving mechanism, the battery piece picking part 62 and the adhesive film picking part 63 are arranged on the base 61 at intervals side by side, and the moving mechanism is used for driving the battery piece picking part 62 and the adhesive film picking part 63 to move synchronously. Wherein the battery sheet pick-up 62 is used for picking up the battery sheet 30 from the battery sheet supply device 3 and releasing the picked-up battery sheet 30 to the first laying position a of the conveyor device 1. The film pick-up section 63 is used for picking up the front adhesive film 40 from the front adhesive film supply device 4, and laying and pressing and adhering the picked-up front adhesive film 40 onto the battery piece 30 located at the second laying position B of the conveying device 1.

The moving mechanism may adopt various existing moving devices capable of driving the base 61 to translate, lift and rotate in a horizontal plane, for example, the moving device may be a multi-axis robot arm, and the moving device may be composed of a translating module, a lifting module and a rotating module, where the translating module is used to drive the base 61 to translate in an X axis and a Y axis, the lifting module is used to drive the base 61 to lift and the rotating module is used to drive the base 61 to rotate in a horizontal plane.

By providing the second transfer device 6 with the battery piece pickup portion 62 and the adhesive film pickup portion 63 driven synchronously by the moving mechanism, the second transfer device 6 is caused to deposit one of the battery pieces 30 onto the battery piece 30 at the second deposit position B while depositing one of the battery pieces 30 onto the back adhesive film 10 at the first deposit position a, thereby improving the stringing efficiency.

In order to ensure that the front adhesive film 40 is able to release the adhesive when the front adhesive film 40 is laid onto the battery plate 30 at the second laying position B, the front half of the corresponding welding set is adhered to the front surface of the battery plate 30, and the front adhesive film 40 needs to be heated to melt the adhesive thereon.

An exemplary description will be made below of the heating manner of the second transfer device 6 by three embodiments.

In the first embodiment

In the present embodiment, the battery piece pickup portion 62 includes a first connection plate and a first suction plate, in which: the first connection plate is mounted on the base 61. The first adsorption plate is connected to the first connecting plate, and the moving mechanism is used for driving the first adsorption plate to lift so as to drive the first adsorption plate to pick up the battery piece and lay the battery piece to a first laying position A. In particular, a first heating element for heating the battery piece is arranged on the first adsorption plate.

The first adsorption plate heats the battery piece 30 in the process of laying the battery piece 30 to the first laying position A, so that the temperature of the battery piece 30 laid to the first laying position A reaches a target temperature, and the target temperature value is at least the melting temperature of the sizing material on the front adhesive film.

When the battery piece 30 with the target temperature is conveyed to the second laying position B, the adhesive film pick-up part 63 lays and presses the front adhesive film 40 on the battery piece 30, and the adhesive on the front adhesive film 40 is heated and melted by the battery piece 30, so that the front adhesive film 40 can be ensured to adhere the front half section of the corresponding welding band group on the front surface of the battery piece 30.

That is, in the present embodiment, the heating of the battery sheet 30 is performed by the battery sheet pickup section 62, and then the heating of the front adhesive film 40 is performed by the battery sheet 30, so that the front adhesive film 40 releases the tackiness.

The first heating element may be a heating rod or a heating block penetrating through the first adsorption plate, or may be a heating patch attached to the lower surface of the first adsorption plate.

In order to enable the first adsorption plate to have adsorption performance, optionally, a sucker group is arranged on the lower surface of the first adsorption plate, and a vacuum pipeline communicated with the sucker component is arranged in the first adsorption plate. The vacuum pipeline pumps air to the sucker group, so that the sucker group generates adsorption force.

In this embodiment, the front adhesive film 40 is laid on the battery sheet 30 and then heated by the battery sheet 30 to release the adhesive, so that the first half of the solder tape set is adhered to the front surface of the battery sheet 30, and the battery sheet 30 is heated by the first heating member on the first adsorption plate.

In order to ensure that the adhesive can be sufficiently released after the front adhesive film 40 is heated, and to prevent the front adhesive film 40 from curling due to an excessively high heating temperature. The second transfer device 6 in this embodiment further includes a temperature sensor and a temperature controller. Optionally, the temperature measuring sensor is disposed on the first adsorption plate, and the temperature measuring sensor periodically measures the temperature of the first adsorption plate, so as to monitor the heating temperature of the first heating element.

The temperature controller adjusts the power of the first heating element according to the temperature measured by the temperature sensor, so as to ensure that the battery plate 30 can heat the front adhesive film 40 to the target temperature.

Second embodiment

In this embodiment, as shown in fig. 2 and 4, the film pick-up section 63 includes a second connection plate 631 and a second adsorption plate 632, wherein: the second connection plate 631 is mounted on the base 61. The second adsorption plate 632 is connected to the second connection plate 631, and the moving mechanism is further configured to drive the second adsorption plate 632 to lift so as to drive the second adsorption plate 632 to pick up the front adhesive film 40 and deposit the front adhesive film 40 to the second deposition position B. In particular, the second adsorption plate 632 is provided with a second heating member for heating the front adhesive film 40.

The second suction plate 632 remains pressed against the battery plate 30 after laying the picked-up front adhesive film 40 onto the battery plate 30. In this process, the second adsorption plate 632 heats the front adhesive film 40 through the second heating element thereon, and the adhesive on the front adhesive film 40 is melted by the second adsorption plate 632, so as to ensure that the front adhesive film 40 adheres the front half section of the corresponding solder strip group to the front surface of the battery piece 30. Of course, in order to improve the film adhering efficiency of the front adhesive film 40, when the front adhesive film 40 is picked up by the second adsorption plate 632, the heating of the front adhesive film 40 can be started to release the adhesive in advance, so that when the front adhesive film 40 is laid on the battery plate 30 by the second adsorption plate 632, the front adhesive film 40 can immediately adhere the first half section of the corresponding welding strip group on the front surface of the battery plate 30.

That is, in the present embodiment, heating of the front adhesive film 40 is performed by the adhesive film pickup section 63, so that the front adhesive film 40 releases the tackiness.

As shown in fig. 3, the second heating member may alternatively include a heating rod 633 penetrating the second adsorption plate 632 and a heating patch 634 attached to the lower surface of the second adsorption plate 632. Of course, as shown in fig. 4, the second heating member may be only a heating patch 634 applied on the lower surface of the second adsorption plate 632. In addition, the second heating member may be only a heating rod 633 penetrating the second adsorption plate 632.

As shown in fig. 3 and 4, optionally, the film pick-up unit 63 further includes a fine adjustment lifting unit 637, where the second suction plate 632 is connected to the second connection plate 631 via the fine adjustment lifting unit 637, and the fine adjustment lifting unit 637 is used to drive the second suction plate 632 to lift relative to the second connection plate 631, so as to implement fine adjustment of the height of the second suction plate 632, thereby ensuring that the second suction plate 632 can smoothly perform suction of the front adhesive film 40, and press the sucked front adhesive film 40 against the front surface of the battery plate 30.

As shown in fig. 3 and 4, in order to make the second adsorption plate 632 have adsorption performance, optionally, a vacuum pipeline 635 is disposed in the second adsorption plate 632, and an adsorption hole 636 communicating with the vacuum pipeline 635 is disposed on the heating paste 634. The vacuum line 635 pumps the suction holes 636, thereby causing the suction holes 636 to generate suction force.

In this embodiment, in order to ensure that the adhesive film 40 can be sufficiently released after being heated, and to prevent the adhesive film 40 from being curled due to an excessively high heating temperature. The second transfer device 6 in this embodiment further includes a temperature sensor and a temperature controller. Optionally, a temperature sensor is disposed on the second adsorption plate 632, where the temperature sensor periodically measures the temperature of the second adsorption plate 632, so as to monitor the heating temperature of the second heating element.

The temperature controller adjusts the power of the second heating element according to the temperature measured by the temperature sensor, so as to ensure that the battery plate 30 can heat the front adhesive film 40 to the target temperature.

Third embodiment

In order to make the front adhesive film 40 release the adhesive quickly, the film pasting efficiency of the front adhesive film 40 is improved. In this embodiment, the battery piece 30 is preheated by the battery piece pickup portion 62 so that the battery piece 30 reaches a temperature close to the melting temperature of the adhesive film. Then, the adhesive film pick-up part 63 lays the front adhesive film 40 on the battery piece, then keeps pressing the front adhesive film 40, and cooperates with the battery piece 30 to heat the front adhesive film 40, so that the front adhesive film 40 releases adhesiveness with an acceleration.

The structure of the battery piece pickup portion 62 in the present embodiment is the same as that of the battery piece pickup portion 62 in the first embodiment, and includes a first connection plate and a first adsorption plate in which a first heating member is disposed. The first adsorption plate heats the battery sheet 30 during the laying of the battery sheet 30 to the first laying position a.

The structure of the film pick-up 63 in this embodiment is the same as that of the film pick-up 63 in the second embodiment, and includes a second connection plate 631 and a second adsorption plate 632, and a second heating element is disposed in the second adsorption plate 632. The second suction plate 632 remains pressed against the battery plate 30 after laying the picked-up front adhesive film 40 onto the battery plate 30. In this process, the second adsorption plate 632 heats the front adhesive film 40 through the second heating element thereon, and at the same time, the battery plate 30 heats the front adhesive film 40 from below, so that the front adhesive film 40 releases the adhesive quickly, and the first half of the corresponding solder strip group is adhered to the front surface of the battery plate 30.

Optionally, the second transfer device 6 further includes a heat insulating member mounted on at least one of the first and second adsorption plates 632, the heat insulating member being configured to block heat generated by at least one of the first and second heating members from being transferred to an adjacent component, thereby enabling the battery cell picking up part 62 and the adhesive film picking up part 63 to perform a heating operation of the battery cell 30 and the front adhesive film 40 without interference with each other.

In this embodiment, in order to enable the front adhesive film 40 to be heated to a predetermined temperature range all the time, the front adhesive film 40 is ensured to be sufficiently released from viscosity after being heated, and the front adhesive film 40 is prevented from being curled due to an excessively high heating temperature. The second transfer device 6 in this embodiment further includes a first temperature sensor, a second temperature sensor, and a temperature controller. Optionally, a first temperature sensor is disposed on the first adsorption plate, the temperature sensor periodically measures the temperature of the first adsorption plate to monitor the heating temperature of the first heating element, and a second temperature sensor is disposed on the second adsorption plate 632, and the temperature sensor periodically measures the temperature of the second adsorption plate 632 to monitor the heating temperature of the second heating element.

The temperature controller adjusts the power of the first heating element and the second heating element according to the temperatures measured by the first temperature sensor and the second temperature sensor, so as to ensure that the battery piece 30 can heat the front adhesive film 40 to the target temperature.

As shown in fig. 5, the second transfer device 6 further includes a distance-dividing driving member 64, and the film pick-up portion 63 is slidably connected to a slide rail 66 provided on the base 61 via a slider 65, and is connected to a movable end of the distance-dividing driving member 64. The pitch drive 64 is used to drive the film pick-up section 63 to slide relative to the battery piece pick-up section 62, thereby effecting adjustment of the pitch between the battery piece pick-up section and the film pick-up section. Finally, the distance between the battery piece 30 and the front adhesive film 40 picked up by the battery piece picking up part 62 and the adhesive film picking up part 63 is adjusted to a target value required by the string, so that the battery piece 30 can be accurately laid to a first laying position A, and the front adhesive film 40 can be accurately laid to a second laying position B.

Of course, the battery piece picking part 62 may be slidably connected to the base 61, and the distance-dividing driving member 64 may drive the battery piece picking part 62 to slide relative to the adhesive film picking part 63, so as to adjust the distance between the battery piece picking part and the adhesive film picking part. Alternatively, the battery piece picking part 62 and the adhesive film picking part 63 are both slidably connected to the base 61, and the battery piece picking part 62 and the adhesive film picking part 63 are synchronously slid toward each other or slid apart from each other toward both sides by the distance driving member 64. Thereby realizing the adjustment of the distance between the battery piece picking part and the adhesive film picking part.

As shown in fig. 1 and 2, optionally, the battery sheet supply device 3 includes a feeding station C and a regulating mechanism (not shown in the drawings), where the battery sheet supply device 3 is used to convey the battery sheet to the feeding station C, and the regulating mechanism is used to correct the position of the battery sheet 30 located at the feeding station C, so that the distance between the battery sheet 30 located at the feeding station C and the adjacent front adhesive film to be picked up is adjusted to a predetermined distance meeting the requirement of the group string. The second transfer device 6 is used for picking up the corrected battery piece 30 and the adjacent front adhesive film at the feeding station.

Optionally, the regulating mechanism comprises a loading table arranged at the feeding station C and a plurality of regulating pushing blocks arranged on the outer side of the loading table, and after the battery piece enters the loading table, the regulating pushing blocks push the battery piece, so that the position correction of the battery piece is implemented. The regulating mechanism may be a first regulating plate and a second regulating plate provided on both sides of the feeding station C, and the first regulating plate and the second regulating plate may be synchronously pressed against the battery piece 30 from both sides when the battery piece 30 is conveyed to the feeding station C, thereby performing the positional correction of the battery piece.

Alternatively, the second transfer device 6 includes two sets of battery piece picking up portions 62 and adhesive film picking up portions 63, and the two sets of battery piece picking up portions 62 and adhesive film picking up portions 63 are arranged on the base in parallel at intervals. In this embodiment, the battery sheet supply device 3 is positioned on the same line as the front surface film supply device 4, and the battery sheet supply device 3 is positioned in the subsequent stage of the front surface film supply device 4. The distance a between the first group of cell pickup sections 62 and the adhesive film pickup sections 63 and the second group of cell pickup sections 62 and the adhesive film pickup sections 63 is equal to the distance b between the conveying device 1 and the cell supply device 3 and the front surface film supply device 4.

So arranged, it is possible to realize that the second set of the battery piece pickup portion 62 and the adhesive film pickup portion 63 are located above the battery piece supply device 3 and the front surface film supply device 4 when the first set of the battery piece pickup portion 62 and the adhesive film pickup portion 63 are located above the conveying device 1. When the substrate 61 is rotated 180 °, the first group of the battery piece picking part 62 and the adhesive film picking part 63 are located above the battery piece supplying device 3 and the front surface film supplying device 4, and the second group of the battery piece picking part 62 and the adhesive film picking part 63 are located above the conveying device 1.

In this way, the first group of the battery piece picking part 62 and the adhesive film picking part 63 of the second transfer device 6, and the second group of the battery piece picking part 62 and the adhesive film picking part 63 can alternately perform the laying of the battery piece and the front adhesive film, thereby improving the group efficiency, which is specifically as follows: the first group battery piece pickup part 62 and the adhesive film pickup part 63 pick up the second battery piece and the second adhesive film when the first battery piece and the first adhesive film are released to the conveying device 1, and the second group battery piece pickup part 62 and the adhesive film pickup part 63 pick up the second battery piece and the second adhesive film. The moving mechanism drives the two groups of battery piece picking parts 62 and the adhesive film picking part 63 to rise to a preset height at the same time and then rotate 180 degrees, and then drives the two groups of battery piece picking parts 62 and the adhesive film picking part 63 to descend, the second group of battery piece picking parts 62 and the adhesive film picking part 63 release the second battery piece and the second front adhesive film to the conveying device 1, and the first group of battery piece picking parts 62 and the adhesive film picking part 63 pick the third battery piece and the third front adhesive film.

Optionally, the device for producing the double-sided laminated battery string according to the embodiment of the present application further includes a hot pressing device, the conveying device 1 is provided with a hot pressing position located at a later stage of the second laying position B, the conveying device 1 is further configured to convey the battery string at the second laying position B to the hot pressing position, and the hot pressing device is configured to fix the battery string located at the hot pressing position in a hot pressing manner.

By arranging the hot pressing device, hot pressing of the laid battery strings is achieved, so that the adhesive property of the back adhesive film 10 and the front adhesive film 40 is further released, and the adhesive strength between the back adhesive film 10 and the front adhesive film 40 and the battery piece 30 is increased. Optionally, the hot pressing device comprises a hot pressing plate located above the conveying device 1, and when the hot pressing plate descends towards the hot pressing position, the battery strings located at the hot pressing position are pressed downwards, so that hot pressing fixing of the battery strings is implemented. In order to further improve the hot pressing efficiency, a heating member is further arranged in the conveying device 1 at a position corresponding to the hot pressing position, and the heating member heats the battery strings from below while the heating plate performs hot pressing on the battery strings.

Optionally, at least one of the first and second laying positions a, B of the conveyor device 1 is provided with a third heating element for heating the adhesive film 10, which may be, for example, a heating rod or a heating block plugged onto the conveyor device 1. By providing the third heating member, heating of the laid back adhesive film 10 can be performed so that the back adhesive film 10 releases the tackiness to adhere the second half of the solder tape set to the back of the battery sheet 30.

Optionally, the double-sided film-covered battery string device in the embodiment of the present application further includes a cooling device installed on the conveying device 1, the conveying device 1 is provided with a cooling position located at a back of the second laying position B, the conveying device 1 is further configured to convey the battery string at the second laying position to the cooling position, and the cooling device is configured to cool the battery string located at the cooling position, so that the welding band group is solidified onto the corresponding battery sheet. The cooling device may be, for example, an air cooling device located above the conveyor 1, a cooling fin provided on the conveyor 1, or the like.

Optionally, the front film supply device 4 includes a front film discharging portion and a front film processing portion, wherein the front film discharging portion is used for supplying the film to the front film processing portion, the front film processing portion is used for outputting and cutting the film to obtain the front film 40 with a predetermined length, and the second transfer device 6 picks up the front film 40 with a predetermined length from the front film processing portion. The front adhesive film discharging part can discharge a plurality of adhesive film strips, and correspondingly, the front adhesive film 40 comprises a plurality of adhesive film strips with preset lengths, and each adhesive film strip correspondingly bonds the front half section of one or more than two welding strips in the welding strip group to the front surface of the battery piece. The front adhesive film discharging part can also only discharge one adhesive film with the width matched with that of the battery piece, and correspondingly, the front adhesive film 40 is a whole film with a preset length, and the whole film adheres the first half sections of all the welding strips in the welding strip group to the front surface of the battery piece.

Also, optionally, the back film supply device includes a back film discharging part for supplying the film to the back film processing part, and a back film processing part for cutting the film to obtain the back film 10 having a predetermined length, and the first transfer device picks up the back film 10 having a predetermined length from the back film processing part. The back adhesive film discharging part can discharge a plurality of adhesive film strips, and correspondingly, the back adhesive film 10 comprises a plurality of adhesive film strips with preset lengths, and each adhesive film strip correspondingly bonds the second half section of one or more than two welding strips in the welding strip group to the back surface of the battery piece. The back adhesive film discharging part can also only discharge one adhesive film with the width matched with that of the battery piece, and correspondingly, the back adhesive film 10 is a whole film with a preset length, and the whole film adheres the second half sections of all the welding strips in the welding strip group to the back of the battery piece.

As shown in fig. 6, optionally, the front adhesive film processing part 4 includes a guide roller set 41, a pressing mechanism 42, a slitting mechanism 43, a traction mechanism 44, and a transfer table 45, which are sequentially disposed, wherein: the guide roller set 41 is used for guiding the adhesive film discharged by the front adhesive film discharging part, so that the adhesive film sequentially passes through the pressing mechanism 42 and the slitting mechanism 43. When the adhesive film with a predetermined length passes through the slitting mechanism 43, the pressing mechanism 42 presses the adhesive film, and the slitting mechanism 43 cuts off the adhesive film, thereby obtaining the front adhesive film 40 with a predetermined length.

The intermediate turntable 45 is configured to move back and forth between the receiving station and the feeding station. After the slitting mechanism 43 cuts off the adhesive film, the traction mechanism 44 pulls the front adhesive film 40 onto the intermediate turntable 45 that moves to the receiving station. The transfer table 45 is then moved to the feeding station, and the second transfer device 6 picks up the front adhesive film 40 from the transfer table 45 moved to the feeding station. The emptied transfer station 45 is then returned to the receiving station ready to receive the next film 40 being pulled by the positive pulling mechanism 44.

It can be seen that the front adhesive film processing part 4 realizes automatic preparation and supply of the front adhesive film by the cooperation of the guide roller set 41, the pressing mechanism 42, the slitting mechanism 43, the traction mechanism 44 and the transfer table 45.

Alternatively, the end of the film passing out of the slitting mechanism 43 is pulled by the pulling mechanism 44 so that a predetermined length of the film passes out of the slitting mechanism 43. Of course, the film may be pushed toward the slitting mechanism 43 after the film is compressed by the compressing mechanism 42, so that the film with a predetermined length passes through the slitting mechanism 43. Compared with the traction by the traction mechanism 44, the adhesive film is pushed by the pressing mechanism 42, so that the traction mechanism 44 avoids the centering table 45, and the traction mechanism 44 is prevented from colliding with the centering table 45.

As shown in fig. 1, optionally, the battery piece supply device 3 includes a battery piece feeding mechanism 31, a battery piece conveying mechanism 32, a detecting mechanism, and an NG piece removing mechanism, where: the battery piece feeding mechanism 31 is used for feeding the battery piece onto the battery piece conveying mechanism 32, the battery piece conveying mechanism 32 is used for conveying the battery piece towards the conveying device 1, and at least a detection station, a rejecting station and a feeding station C are sequentially arranged on a conveying path of the battery piece conveying mechanism 32. The detection mechanism is arranged at the detection station and used for detecting the battery piece conveyed to the detection station. The NG sheet removing mechanism is positioned at the removing station and used for removing the NG battery sheet which is unqualified in detection from the battery sheet conveying mechanism. The second transfer device 6 picks up the battery sheet from the feeding station C.

By arranging the battery piece supply device 3, the battery piece supply device 3 realizes quality detection of the battery pieces before the battery pieces are laid, and the battery piece supply device is ensured to only supply qualified battery pieces 30 to the feeding station C.

With continued reference to fig. 1, the solder ribbon processing apparatus 2 may optionally include a solder ribbon supply mechanism 21, a solder ribbon clamping mechanism 22, a solder ribbon cutting mechanism 23, and a solder ribbon traction mechanism 24, which are sequentially arranged, wherein: the solder ribbon supply mechanism 21 is for supplying a plurality of parallel solder ribbons. The ribbon pulling mechanism 24 is configured to pull the plurality of ribbons such that the plurality of ribbons sequentially pass through the ribbon clamping mechanism 22 and the ribbon cutting mechanism 23. When the solder strip between the solder strip cutting mechanism 23 and the solder strip pulling mechanism 24 reaches a predetermined length, the solder strip clamping mechanism 22 is configured to clamp the solder strip, and the solder strip cutting mechanism 23 is configured to cut off the solder strip to obtain a solder strip group including a plurality of solder strips having a predetermined length. The weld bead set is deposited to a first deposition position and a second deposition position by a weld bead pulling mechanism 24.

By the cooperation of the welding-ribbon supply mechanism 21, the welding-ribbon clamping mechanism 22, the welding-ribbon cutting mechanism 23, and the welding-ribbon pulling mechanism 24, the welding-ribbon processing apparatus 2 achieves automatic preparation of the welding-ribbon set having a predetermined length, and automatic laying of the welding-ribbon set to the first laying position and the second laying position.

The application also provides a battery string double-sided film combination method which can be implemented by the battery string double-sided film combination device in any embodiment.

The battery string double-sided film laminating method in the embodiment of the application comprises the following steps:

s1, placing an (i+1) th back adhesive film at a first laying position.

S2, placing an (i+1) th welding strip group on an (i+1) th back adhesive film at a first laying position, wherein the second half section of the (i+1) th welding strip group is laid above the (i+1) th back adhesive film, and the first half section of the (i+1) th welding strip group is placed on an (i) th battery piece at a second laying position.

S3, placing the (i+1) th battery piece on the rear half section of the (i+1) th welding strip group, and simultaneously placing the (i) th front adhesive film on the front half section of the (i+1) th welding strip group.

S4, adhering the ith front adhesive film to the front half section of the (i+1) th welding strip group and the ith battery piece.

S5, forward stepping materials at the first laying position and the second laying position, so that the (i+1) th back adhesive film, the (i+1) th second half section of the welding strip group and the (i+1) th battery piece which are originally located at the first laying position and are stacked are moved to the second laying position, and the (i) th back adhesive film, the (i+1) th first half section of the welding strip group, the (i) th battery piece and the (i) th front adhesive film which are originally located at the second laying position and are stacked are stepped to a subsequent procedure.

According to the battery string double-sided film laminating method, the back adhesive film and the front adhesive film are inserted in the process of laying and stacking the battery sheets and the welding tape groups, so that the corresponding welding tape groups can be adhered to the corresponding battery sheets after the adhesive films are laid, and the adhesive strength of the adhesive films is greater than the connecting force of the welding tape and the battery sheets after welding, so that the welding tape and the battery sheets are prevented from being separated in the conveying process after strings are formed.

Optionally, in step S3, during the process of transporting and placing the (i+1) th battery piece onto the second half of the (i+1) th solder strip group, the (i+1) th battery piece is heated to at least 90 ℃. Therefore, the adhesive is released quickly after the laid front adhesive film is heated by the battery piece, so that the front half section of the corresponding welding strip group is adhered to the front surface of the battery piece. In particular, the heated temperature of the front adhesive film is at least 90 ℃, so that the adhesive on the front adhesive film can be melted and the viscosity is released.

Optionally, in step S4, after the ith front adhesive film is placed on the first half section of the (i+1) th welding band set, the (i+1) th front adhesive film is pressed onto the first half section of the (i+1) th welding band set and heated, so that the temperature of the ith front adhesive film is at least 90 ℃ and maintained for at least 1 second. Or pressing the ith front adhesive film on the first half section of the (i+1) th welding band group and the ith battery piece, and heating the ith front adhesive film to more than 90 ℃ and maintaining for at least 1 second. And the laid front adhesive film is compressed and heated, so that the adhesive is released quickly after the laid front adhesive film is heated, and the front half section of the corresponding welding strip group is adhered to the front surface of the battery piece.

Optionally, in step S3, the ith front adhesive film is preheated to 50-65 ℃ during the process of carrying and placing the ith front adhesive film on the first half section of the (i+1) th welding strip group. In this way, the front adhesive film releases the viscosity in advance, so that the front half section of the corresponding welding strip group is adhered to the front surface of the battery piece.

It should be noted that, in the above embodiment, the hot melt adhesive of the adhesive film may shrink and begin to have viscosity at about 65 ℃, and the hot melt adhesive of the adhesive film may be adhered to the battery plate and the solder strip set after being heated to 90 ℃, so if the material of the hot melt adhesive is changed, the preset temperature value will also be changed, and the scope of the heating temperature value corresponding to different heating occasions in several embodiments is emphasized and protected in this scheme.

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.

Claims

1. The double-sided film-covered battery string equipment is characterized by being used for connecting battery pieces in series to form a battery string, and comprises a conveying device, a welding strip processing device, a battery piece supply device, a front film supply device, a back film supply device, a first transfer device and a second transfer device, wherein:

The battery piece supply device is used for supplying battery pieces, the front film supply device is used for supplying a front adhesive film, and the back film supply device is used for supplying a back adhesive film; the first transfer device is used for acquiring an i+1th back adhesive film from the back film supply device and laying the i+1th back adhesive film to the first laying position, wherein i is a natural number larger than 0;

The second transfer device is also used for pressing and bonding the ith positive adhesive film on the ith battery piece and the (i+1) th welding strip group which are positioned at the second laying position;

The conveyor is configured to step back a predetermined distance such that the (i+1) th back side adhesive film and the (i+1) th battery sheet step from the first lay-down position to the second lay-down position to free the first lay-down position.

2. The double-sided film covered battery string device of claim 1, wherein the second transfer means comprises a moving mechanism, a base, a battery piece pickup section, and a film pickup section, wherein:

The base is connected to the driving end of the moving mechanism, the battery piece picking part and the adhesive film picking part are arranged on the base at intervals side by side, and the moving mechanism is used for driving the battery piece picking part and the adhesive film picking part to move synchronously;

the battery piece picking part is used for picking up the battery piece from the battery piece supply device and releasing the picked battery piece to a first laying position of the conveying device;

The adhesive film pick-up part is used for picking up the front adhesive film from the front film supply device and compacting and bonding the picked-up front adhesive film on the battery piece positioned at the second laying position of the conveying device.

3. The double-sided film covered battery string device of claim 2, wherein the battery piece pickup section comprises a first connection plate and a first suction plate, wherein:

The first connecting plate is arranged on the base;

The first adsorption plate is connected to the first connecting plate, the moving mechanism is used for driving the first adsorption plate to lift so as to drive the first adsorption plate to pick up the battery piece and lay the battery piece to the first laying position, and a first heating piece for heating the battery piece is arranged on the first adsorption plate.

4. The double-sided film covered battery string device of claim 2 or 3, wherein the adhesive film pick-up section comprises a second connection plate and a second adsorption plate, wherein:

the second connecting plate is arranged on the base;

The second adsorption plate is connected to the second connection plate, the moving mechanism is further used for driving the second adsorption plate to lift, so that the second adsorption plate is driven to pick up the front adhesive film, the front adhesive film is laid to the second laying position, and a second heating piece for heating the front adhesive film is arranged on the second adsorption plate.

5. The double-sided film covered battery string device according to claim 4, wherein the second heating member heats the front side adhesive film in the process that the adhesive film pick-up portion transfers the front side adhesive film from the front side film supply device to the second laying position of the conveying device;

Or alternatively

After the adhesive film pick-up part transfers the front adhesive film to a second laying position of the conveying device, the adhesive film pick-up part compresses the front adhesive film on the welding belt group and the battery piece, and the second heating piece heats the front adhesive film.

6. The double-sided film covered battery string apparatus of claim 4, wherein the second transfer device further comprises a heat insulating member mounted on at least one of the first and second adsorption plates, the heat insulating member being for blocking heat generated by at least one of the first and second heating members from being transferred to an adjacent component.

7. The double-sided film battery string device according to claim 4, wherein the second transfer means further comprises a temperature sensor for periodically measuring a temperature of the front adhesive film when it is heated by at least one of the first heating member and the second heating member, and a temperature controller for adjusting a power of at least one of the first heating member and the second heating member according to the temperature measured by the temperature sensor.

8. The double-sided film covered battery string device of claim 3, wherein the second transfer means further comprises a separation driving member, at least one of the battery piece picking part and the adhesive film picking part being slidingly connected to the base and connected to a movable end of the separation driving member;

the distance-dividing driving piece is used for driving at least one of the battery piece picking part and the adhesive film picking part to slide so as to adjust the distance between the battery piece picking part and the adhesive film picking part.

9. The double-sided film covered battery string device as set forth in claim 2, wherein the battery sheet supply means includes a feeding station to which the battery sheet is supplied, and a regulating mechanism for correcting the position of the battery sheet located at the feeding station, and the second transfer means is for picking up the battery sheet located at the feeding station and corrected.

10. The double-sided film covered battery string device according to claim 2, wherein the second transfer means comprises two sets of battery piece pick-up portions and a film pick-up portion, the two sets of battery piece pick-up portions and the film pick-up portion being arranged on the base at a parallel interval;

the battery piece supply device and the front film supply device are positioned on the same straight line, and the battery piece supply device is positioned at the rear of the front film supply device;

The first group of the battery piece picking parts and the adhesive film picking parts and the second group of the battery piece picking parts and the adhesive film picking parts have the same spacing as the conveying device, the battery piece supplying device and the front surface film supplying device;

When the first battery piece picking part and the adhesive film picking part release the first battery piece and the first front adhesive film to the conveying device, the second battery piece picking part and the adhesive film picking part pick up the second battery piece and the second front adhesive film;

The moving mechanism drives the two groups of battery piece picking parts and the adhesive film picking part to rise to a preset height at the same time and then rotate 180 degrees, and then drives the battery piece picking parts and the adhesive film picking part to descend, the second group of battery piece picking parts and the adhesive film picking part release the second battery piece and the second front adhesive film to the conveying device, and the first group of battery piece picking parts and the adhesive film picking part pick up the third battery piece and the third front adhesive film.

11. The double-sided film covered battery string device according to claim 1, further comprising a hot pressing device, wherein the hot pressing position located behind the second laying position is arranged on the conveying device, the conveying device is further used for conveying the battery string located at the second laying position to the hot pressing position, and the hot pressing device is used for fixing the battery string located at the hot pressing position in a hot pressing mode.

12. The double-sided film covered battery string device according to claim 1, wherein at least one of the first laying position and the second laying position of the conveying means is provided with a third heating member for heating the back adhesive film.

13. The double-sided film battery string device as set forth in claim 1, further comprising a cooling means mounted on a conveying means provided with a cooling position downstream of the second laying position, the conveying means further being for conveying the battery string at the second laying position to the cooling position, the cooling means being for cooling the battery string at the cooling position.

14. The double-sided film covered battery string device of claim 1, wherein:

The front film supply device comprises a front film discharging part and a front film processing part, wherein the front film discharging part is used for supplying a film to the front film processing part, the front film processing part is used for outputting and cutting the film to obtain a front film with a preset length, and the second transfer device picks up the front film with the preset length from the front film processing part;

The back film supply device comprises a back film discharging part and a back film processing part, wherein the back film discharging part is used for supplying a film to the back film processing part, the back film processing part is used for cutting the film to obtain a back film with a preset length, and the first transfer device picks up the back film with the preset length from the back film processing part.

15. The apparatus according to claim 14, wherein the front adhesive film processing section comprises a guide roller set, a pressing mechanism, a slitting mechanism, a traction mechanism, and a transfer table, which are sequentially arranged, wherein:

The guide roller set is used for guiding the adhesive film discharged by the front adhesive film discharging part, so that the adhesive film sequentially passes through the pressing mechanism and the slitting mechanism;

when the adhesive film with the preset length passes through the slitting mechanism, the pressing mechanism presses the adhesive film, the slitting mechanism cuts off the adhesive film to obtain the adhesive film with the preset length, and the traction mechanism pulls the adhesive film with the preset length onto the turntable;

The transfer platform is configured to move back and forth between the material receiving station and the material feeding station, the transfer platform moves to the material feeding station after receiving the front adhesive film sent by the traction mechanism at the material receiving station, the transfer platform is further configured to fix the received front adhesive film through negative pressure adsorption, and the second transfer device returns to the material receiving station to continuously receive the front adhesive film after picking up the front adhesive film at the material feeding station.

16. The double-sided film covered battery string device of claim 15, wherein:

The traction mechanism is also used for pulling the end part of the adhesive film penetrating out of the adhesive film so that the adhesive film with the preset length penetrates out of the slitting mechanism; or alternatively

The pressing mechanism is also used for pressing the adhesive film and pushing the adhesive film towards the slitting mechanism so that the adhesive film with the preset length passes out of the slitting mechanism.

17. The double-sided film covered battery string device of claim 1, wherein the battery sheet supply apparatus comprises a battery sheet feeding mechanism, a battery sheet conveying mechanism, a detection mechanism, and a NG sheet rejection mechanism, wherein:

The battery piece feeding mechanism is used for feeding the battery pieces to the battery piece conveying mechanism,

The battery piece conveying mechanism is used for conveying the battery pieces towards the conveying device, and a conveying path of the battery piece conveying mechanism is at least provided with a detection station, a rejection station and a feeding station in sequence;

The detection mechanism is arranged at the detection station and used for detecting the battery piece conveyed to the detection station;

The NG sheet removing mechanism is positioned at the removing station and is used for removing unqualified NG battery sheets from the battery sheet conveying mechanism;

The second transfer device picks up the battery piece from the feeding station.

18. The double-sided film battery string device of claim 1, wherein the welding strip processing apparatus comprises a welding strip supply mechanism, a welding strip clamping mechanism, a welding strip cutting mechanism, and a welding strip traction mechanism, which are sequentially arranged, wherein:

The welding strip supply mechanism is used for supplying a plurality of parallel welding strips;

The welding strip traction mechanism is configured to traction a plurality of welding strips, so that the welding strips sequentially pass through the welding strip clamping mechanism and the welding strip cutting mechanism;

When the welding strip between the welding strip cutting mechanism and the welding strip traction mechanism reaches a preset length, the welding strip clamping mechanism is configured to clamp the welding strip, and the welding strip cutting mechanism is configured to cut off the welding strip so as to obtain a welding strip group comprising a plurality of welding strips with preset lengths;

the welding belt traction mechanism is used for paving the welding belt groups to the first paving position and the second paving position.