Film-coated battery string repair equipment

Abstract

The utility model provides film-coated battery string repair equipment. The film-coated battery string repair equipment comprises a repair table, a heating mechanism, a carrying mechanism and a welding strip traction mechanism. The repair table comprises a first side bearing table, a middle bearing table and a second side bearing table. The middle bearing table is used for a defective battery piece, and the first side bearing table and the second side bearing table are used for bearing battery string components on the first side and the second side of the defective battery piece respectively. And the heating mechanism is used for heating the adhesive film adhered to the defective battery piece. And the first side bearing table and the second side bearing table translate away from the middle bearing table, so that the two groups of welding strips adhered to the defective battery piece are separated from the defective battery piece. The carrying mechanism is used for removing the defective battery piece from the middle bearing table. The first side bearing table and the second side bearing table are further configured to horizontally move and return towards the middle bearing table, and the welding strip traction mechanism is matched with the carrying mechanism to lay a replacement adhesive film, a replacement battery piece and two sets of welding strips on the middle bearing table according to the stringing rule of the film-coated battery strings. According to the invention, automatic repair of the film-coated battery string is realized.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell assembly production, and specifically to a film-coated cell string repair device. Background Art

[0002] In the film-coated battery string, the soldering tape connecting the adjacent battery cells is bonded to the battery cells under the application of the adhesive film, and the soldering tape is located between the battery cells and the adhesive film. For the film-coated battery string, when there are defective battery cells (referred to as defective battery cells) in the battery string, the battery string can be replaced and repaired according to the actual situation, that is, the defective battery cells are removed from the battery string and replaced with qualified battery cells (referred to as replacement battery cells).

[0003] The commonly used battery string repair machine is mainly used for replacing and repairing conventional battery strings without adhesive film and welded by welding ribbon. This kind of repair machine cannot perform repair on film-coated battery strings. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a film-coated battery string repair device, which adopts the following technical solutions:

[0005] A film-covered battery string repair device comprises a repair station, a heating mechanism, a transport mechanism and a welding ribbon pulling mechanism, wherein:

[0006] The rework station includes a first side loading station, a middle loading station and a second side loading station, wherein:

[0007] The middle carrier is used to carry the defective battery cell in the film-coated battery string, the first side carrier is used to carry the battery string component on the first side of the defective battery cell, and the second side carrier is used to carry the battery string component on the second side of the defective battery cell;

[0008] The heating mechanism is configured to be movable above the middle carrier platform, and the heating mechanism is used to heat the adhesive film adhered to the defective battery cell to soften the adhesive film adhered to the defective battery cell;

[0009] The first side loading platform and the second side loading platform are configured to translate away from the middle loading platform so that two groups of welding ribbons adhered to the defective battery cell are separated from the defective battery cell;

[0010] The transport mechanism is used to remove the defective battery cell with the adhesive film from the middle carrying platform;

[0011] The first side load platform and the second side load platform are also configured to translate back to their positions toward the middle load platform, and the welding tape traction mechanism is configured to control the free ends of the two groups of welding tapes detached from the defective battery cell, so as to cooperate with the conveying mechanism to lay the replacement film, replacement battery cell and two groups of welding tapes to the middle load platform according to the stringing rules of the film-coated battery string, wherein, after laying the first replacement film, the middle load platform is also used to heat the first replacement film so that the first replacement film releases its viscosity to bond and fix at least one of the two groups of welding tapes laid on the first replacement film; after completing the laying of the replacement film, the replacement battery cell and the two groups of welding tapes, the heating mechanism is also used to heat the replacement film so that the two groups of welding tapes are bonded to the replacement battery cell by the replacement film.

[0012] Through the cooperation of the rework station, heating mechanism, conveying mechanism and welding tape traction mechanism, the film-coated battery string rework equipment provided by the present application realizes the automatic rework of the film-coated battery string. In particular, after laying the first replacement film, the middle support station heats the first replacement film so that the first replacement film releases its stickiness to ensure that the welding tape laid on the first replacement film can be firmly bonded to the first replacement film, thereby preventing the welding tape laid on the first replacement film from being offset, and ultimately ensuring the rework quality of the film-coated battery string.

[0013] In some embodiments, the film-coated battery string rework equipment also includes guide combs arranged on both sides of the middle supporting platform; in the process of two groups of welding ribbons detaching from defective battery cells, the guide combs are used to guide the welding ribbons on the corresponding sides to move in their length direction; the guide combs include a plurality of guide teeth arranged along the width direction of the rework platform, and a guide groove is formed between two adjacent guide teeth, and each guide groove is used to guide a welding ribbon.

[0014] Affected by gravity or internal stress, if the two sets of welding ribbons are not controlled during the process of detaching from the defective battery cells, the welding ribbons are prone to position shift and sagging. The guide combs set on both sides of the middle support platform can guide the two sets of welding ribbons to move in their length direction during the process of detaching from the defective battery cells, preventing the welding ribbons from shifting and sagging, and ensuring that the free ends of the welding ribbons remain in the preset position.

[0015] In some embodiments, a heating component for heating the first replacement adhesive film is disposed in the intermediate carrier.

[0016] By arranging a heating component on the intermediate carrier, when the first replacement adhesive film is laid on the intermediate carrier, the intermediate carrier can heat the first replacement adhesive film so that the first replacement adhesive film releases its stickiness.

[0017] In some embodiments, a first adsorption component is disposed in the middle carrier platform, and before the first side carrier platform and the second side carrier platform are translated away from the middle carrier platform, the first adsorption component is used to adsorb and fix the adhesive film on the defective battery cell on the middle carrier platform.

[0018] Ensure that the defective battery cell and the adhesive film thereon remain on the middle carrier, so that when the first side carrier and the second side carrier are translated away from the middle carrier, the first group of welding ribbons and the second group of welding ribbons can be smoothly separated from the defective battery cell.

[0019] In some embodiments, an intermediate pressing assembly is provided at the bottom of the heating mechanism, and the intermediate pressing assembly is used to press the defective battery cell onto the intermediate loading platform before the first side loading platform and the second side loading platform are translated away from the intermediate loading platform; the intermediate pressing assembly is also used to press down the laid replacement battery cell, or to press down the laid second replacement adhesive film.

[0020] By pressing the defective battery cell onto the middle carrier platform through the middle pressing component, it can be ensured that when the first side carrier platform and the second side carrier platform are translated away from the middle carrier platform, the first group of welding ribbons and the second group of welding ribbons can be smoothly separated from the defective battery cell. Pressing down the laid replacement battery cell or pressing down the laid second replacement adhesive film through the middle pressing component helps the replacement adhesive film to adhere the welding ribbon to the replacement battery cell.

[0021] In some embodiments, the intermediate pressing assembly includes a first pressing portion and a second pressing portion arranged side by side along the length direction of the rework station; the first pressing portion and the second pressing portion are configured to press down the replacement battery cell synchronously; or; the first pressing portion is configured to press down the second replacement adhesive film portion corresponding to the non-free end of the second group of solder strips, and after the solder strip traction mechanism releases the free end of the second group of solder strips, the second pressing portion presses down the second replacement adhesive film portion corresponding to the free end of the second group of solder strips.

[0022] For BC film-coated battery strings, after laying out the replacement battery cell, the first pressing part and the second pressing part simultaneously press down the replacement battery cell, which helps the first replacement adhesive film to adhere the first group of welding strips and the second group of welding strips to the replacement battery cell. For double-sided film-coated battery strings, after laying out the second replacement adhesive film on the second group of welding strips, the first pressing part is controlled to first press down the second replacement adhesive film portion corresponding to the non-free end of the second group of welding strips, so that the non-free end of the second group of welding strips can be pressed and positioned to the corresponding position of the replacement battery cell, so that the second group of welding strips will not be offset after releasing the free end of the second group of welding strips. After releasing the free end of the second group of welding strips, by controlling the second pressing part to press down the second replacement adhesive film portion corresponding to the free end of the second group of welding strips, the free end of the second group of welding strips can also be pressed and positioned to the corresponding position of the replacement battery cell, thereby ensuring the final rework quality.

[0023] In some embodiments, the weld ribbon traction mechanism includes a first weld ribbon traction portion and a second weld ribbon traction portion, wherein: the first weld ribbon traction portion is arranged on the first side of the intermediate carrier platform, and when the second side carrier platform is translated toward the intermediate carrier platform, the first weld ribbon traction portion is configured to clamp the free end of the second group of weld ribbons detached from the defective battery cell, and translate synchronously with the second side carrier platform to lay the second group of weld ribbons on the intermediate carrier platform; the second weld ribbon traction portion is arranged on the second side of the intermediate carrier platform, and when the first side carrier platform is translated toward the intermediate carrier platform, the second weld ribbon traction portion is configured to clamp the free end of the first group of weld ribbons detached from the defective battery cell, and translate synchronously with the first side carrier platform to lay the first group of weld ribbons on the intermediate carrier platform.

[0024] Through the cooperation between the first welding tape traction part and the second side loading platform, and the cooperation between the second welding tape traction part and the first side loading platform, it is ensured that the second group of welding tapes and the first group of welding tapes can be efficiently laid on the middle loading platform, thereby improving the rework efficiency.

[0025] In some embodiments, a second adsorption component is provided at one end of the first side support platform close to the middle support platform, and before the first side support platform is translated away from the middle support platform, the second adsorption component is used to adsorb the battery cells close to the defective battery cells in the battery string component on the first side onto the first side support platform; a third adsorption component is provided at one end of the second side support platform close to the middle support platform, and before the second side support platform is translated away from the middle support platform, the third adsorption component is used to adsorb the battery cells close to the defective battery cells in the battery string component on the second side onto the second side support platform.

[0026] Before controlling the first side platform to translate away from the middle platform, the first side platform absorbs the battery cell close to the defective battery cell in the battery string component on the first side of the defective battery cell, thereby helping the first group of welding strips to smoothly detach from the defective battery cell. Similarly, before controlling the second side platform to translate away from the middle platform, the second side platform can absorb the battery cell close to the defective battery cell in the battery string component on the second side of the defective battery cell, thereby helping the second group of welding strips to smoothly detach from the defective battery cell.

[0027] In some embodiments, the film-coated battery string repair equipment also includes a first side pressing component and a second side pressing component, wherein: the first side pressing component is configured to be movable to the first side of the intermediate supporting platform, and before the first side supporting platform is translated away from the intermediate supporting platform, the first side pressing component is used to press the battery cells close to the defective battery cells in the battery string component on the first side onto the first side supporting platform; the second side pressing component is configured to be movable to the second side of the intermediate supporting platform, and before the second side supporting platform is translated away from the intermediate supporting platform, the second side pressing component is used to press the battery cells close to the defective battery cells in the battery string component on the second side onto the second side supporting platform.

[0028] Before controlling the first side platform to translate away from the middle platform, the first side pressing assembly can press the battery cell close to the defective battery cell in the battery string component on the first side of the defective battery cell, thereby facilitating the first group of welding strips to translate away from the defective battery cell during the translation of the first side platform away from the middle platform, thereby smoothly detaching from the defective battery cell. Similarly, before controlling the second side platform to translate away from the middle platform, the second side pressing assembly can press the battery cell close to the defective battery cell in the battery string component on the second side of the defective battery cell, thereby facilitating the second group of welding strips to translate away from the defective battery cell during the translation of the second side platform away from the middle platform, thereby smoothly detaching from the defective battery cell.

[0029] In some embodiments, the film-coated battery string repair equipment also includes a first weld strip clamping mechanism and a second weld strip clamping mechanism, wherein: the first weld strip clamping mechanism is installed on the first side load platform and is close to the middle load platform, when the defective battery cell is located at the first end of the film-coated battery string, the battery string component located on the first side of the defective battery cell only includes the first group of weld strips, and before the first side load platform is translated away from the middle load platform, the first weld strip clamping mechanism is used to clamp the end of the first group of weld strips extending out of the defective battery cell; the second weld strip clamping mechanism is installed on the second side load platform and is close to the middle load platform, when the defective battery cell is located at the second end of the film-coated battery string, the battery string component located on the second side of the defective battery cell only includes the second group of weld strips, and before the second side load platform is translated away from the middle load platform, the second weld strip clamping mechanism is used to clamp the end of the second group of weld strips extending out of the defective battery cell.

[0030] By setting a first welding strip clamping mechanism, when the defective battery cell is located at the first end of the film-coated battery string, before controlling the first side platform to translate away from the middle platform, the first welding strip clamping mechanism can clamp and fix the end of the first group of welding strips extending out of the defective battery cell, thereby ensuring that the first group of welding strips can translate away from the defective battery cell during the translation of the first side platform away from the middle platform, thereby smoothly detaching from the defective battery cell. Similarly, by setting a second welding strip clamping mechanism, when the defective battery cell is located at the second end of the film-coated battery string, before controlling the second side platform to translate away from the middle platform, the second welding strip clamping mechanism can clamp and fix the end of the second group of welding strips extending out of the defective battery cell, thereby ensuring that the second group of welding strips can translate away from the defective battery cell during the translation of the second side platform away from the middle platform, thereby smoothly detaching from the defective battery cell.

[0031] In some embodiments, the film-covered battery string repair equipment further includes a solder strip pressing mechanism, which is used to press the non-free end of the solder strip downward so that the non-free end of the solder strip is bonded to the first replacement adhesive film.

[0032] The non-free end of the soldering ribbon is pressed downward by the soldering ribbon pressing mechanism, so as to ensure that the soldering ribbon is accurately and firmly bonded to the first replacement adhesive film.

[0033] In some embodiments, the conveying mechanism includes a battery cell conveying part and an adhesive film conveying part, wherein: the battery cell conveying part is used to remove defective battery cells with adhesive films from the intermediate supporting platform, and the battery cell conveying part is also used to lay replacement battery cells on the intermediate supporting platform; the adhesive film conveying part is used to lay replacement adhesive films on the intermediate supporting platform.

[0034] By setting up the cell conveying part, the defective cell with the adhesive film can be automatically removed from the middle carrier, and the replacement cell can be automatically laid. By setting up the adhesive film conveying part, the replacement adhesive film can be automatically laid.

[0035] In some embodiments, the adhesive film conveying portion is further used to press the non-free end of the soldering ribbon downward so that the non-free end of the soldering ribbon is adhered to the first replacement adhesive film.

[0036] Costs can be saved by pressing down the non-free end of the soldering ribbon via the adhesive film transport portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a flow chart of the film-coated battery string repair method of this application;

[0038] Figure 2 This is a schematic diagram of the structure of the BC coated battery string of this application;

[0039] Figure 3 It is a schematic diagram of the state after the two groups of welding strips adhered to the defective battery cell in the BC coated battery string of the present application are separated from the defective battery cell;

[0040] Figure 4 This is a schematic diagram of the state after the first replacement film is laid in the BC coated battery string of this application;

[0041] Figure 5 This is a schematic diagram of the state after the first group of welding ribbons and the second group of welding ribbons are laid to the first replacement adhesive film in the BC coated battery string of this application;

[0042] Figure 6 This is a schematic diagram of the state after the replacement battery cells are laid in the BC coated battery string of this application;

[0043] Figure 7 This is a schematic diagram of the structure of a double-sided film-coated battery string of this application;

[0044] Figure 8 It is a schematic diagram of the state after two groups of welding strips adhered to the defective battery cell in the double-sided film battery string of the present application are separated from the defective battery cell;

[0045] Fig. 9 This is a schematic diagram of the state after the first replacement film is laid in the double-sided film-coated battery string of this application;

[0046] Fig.10 This is a schematic diagram of the state after the first group of welding ribbons are laid to the first replacement adhesive film in the double-sided film-covered battery string of the present application;

[0047] Fig.11 This is a schematic diagram of the state after the replacement battery cells are laid in the double-sided film-coated battery string of the present application;

[0048] Fig.12 This is a schematic diagram of the state after the second set of welding ribbons are pulled above the replacement battery cell in the double-sided film-coated battery string of the present application;

[0049] Fig.13 This is a schematic diagram of the state after the second replacement film is laid in the double-sided film-coated battery string of this application;

[0050] Fig.14 It is a schematic diagram of the structure of the film-coated battery string repair equipment in this application at one viewing angle;

[0051] Fig.15 It is a schematic diagram of the structure of the film-coated battery string repair equipment in this application from another perspective;

[0052] Fig.16 for Fig.15 A partial enlarged view of the A area;

[0053] Fig.17 It is a structural schematic diagram of the first welding strip traction part in this application;

[0054] Fig.18 It is a structural schematic diagram of the transport mechanism in this application;

[0055] Fig.19 This is a schematic diagram of the laying method of the second replacement film in this application;

[0056] Fig. 20 It is a schematic diagram of the assembly structure of the first welding strip clamping mechanism and the first side bearing platform in the present application at one viewing angle;

[0057] Fig.21 It is a schematic structural diagram of the first welding ribbon clamping mechanism and the first side supporting platform in the present application from another viewing angle;

[0058] Fig. 22 for Fig.21 AA section view.

[0059] Figures 1 to 22 Included:

[0060] Rework station 1: first side loading station 11, middle loading station 12, second side loading station 13;

[0061] Heating mechanism 2: first pressing part 21, second pressing part 22;

[0062] Transport mechanism 3: battery cell transport unit 31, adhesive film transport unit 32;

[0063] The welding strip pulling mechanism 4 includes a first welding strip pulling part 41, a second welding strip pulling part 42, a mounting frame 411, a clamping driving member 412, and a clamping claw 413;

[0064] Guide comb 5;

[0065] The first welding strip clamping mechanism 6 includes a clamping driving part 61, a clamping head 62, and a clamping opening 63;

[0066] A first side pressing component 71 and a second side pressing component 72;

[0067] A first cylinder 81, a second cylinder 82;

[0068] Battery cell 101 , solder ribbon 102 , adhesive film 103 . DETAILED DESCRIPTION

[0069] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0070] The film-coated battery strings in this application include BC film-coated battery strings and double-sided film-coated battery strings.

[0071] like Figure 2 As shown, the BC film-coated battery string includes a battery cell 101, a welding ribbon 102 and an adhesive film 103 (the adhesive film 103 is located on the back of the battery cell 101, indicated by a dotted line). The backs of two adjacent battery cells 101 are connected using the same set of welding ribbons 102, the adhesive film 103 is bonded to the back of the battery cell 101, and the welding ribbon 102 is between the battery cell 101 and the adhesive film 103, and the adhesive film 103 bonds the welding ribbon 102 to the back of the corresponding battery cell 101.

[0072] like Figure 7 As shown, the double-sided film-coated battery string includes a battery cell 101, a welding ribbon 102 and an adhesive film 103. Among them, the front side of one battery cell and the back side of the other battery cell of two adjacent battery cells 101 are connected by the same set of welding ribbons 102, and the adhesive film 103 is adhered to both sides of the battery cell 101, and the welding ribbon 102 is between the battery cell 101 and the adhesive film 103, and the adhesive film 103 adheres the welding ribbon 102 to the corresponding surface of the corresponding battery cell 101.

[0073] For the above two types of film-coated battery strings, the present application provides a film-coated battery string repair method. Figure 1 As shown, the film-covered battery string repair method of the present application includes the following steps:

[0074] S1. Heat the adhesive film bonded to the defective battery cell to soften it, control the battery string components on both sides of the defective battery cell to translate away from the defective battery cell, and separate the two sets of welding ribbons bonded to the defective battery cell from the defective battery cell.

[0075] S2. Remove the defective battery cell with the adhesive film.

[0076] S3. According to the stringing rules of the film-coated battery string, a replacement film, a replacement battery cell and two groups of welding tapes detached from the defective battery cell are laid to the position vacated after the defective battery cell is removed, wherein after laying the first replacement film, the first replacement film is heated to release the viscosity of the first replacement film so as to bond and fix at least one of the two groups of welding tapes detached from the defective battery cell laid on the first replacement film; after completing the laying of the replacement film, the replacement battery cell and the two groups of welding tapes, the replacement film is heated so that the two groups of welding tapes are bonded to the replacement battery cell by the replacement film.

[0077] In the present application, a defective battery cell is a battery cell that has hidden cracks, damages, holes, etc. that cannot be repaired and needs to be replaced. In step S1, the adhesive film on the defective battery cell is heated so that the adhesive film softens and its viscosity is reduced. Correspondingly, the connection strength between the two groups of welding strips adhered to the defective battery cell and the defective battery cell is reduced. In this way, when the battery string components on both sides of the defective battery cell are controlled to translate away from the defective battery cell, the two groups of welding strips adhered to the defective battery cell can be smoothly detached from the defective battery cell. In step S3, according to the stringing rules of the film-coated battery string, the replacement adhesive film, the replacement battery cell and the two groups of welding strips detached from the defective battery cell are laid, and the replacement adhesive film is heated, so that the two groups of welding strips are bonded to the replacement battery cell by the replacement adhesive film, and finally the film-coated battery string is repaired.

[0078] In particular, in step S3, after laying the first replacement film, the first replacement film is immediately heated so that the first replacement film releases its stickiness in time, ensuring that the soldering tape laid on the first replacement film can be firmly bonded to the first replacement film, and then the replacement battery cell is laid, thereby preventing the soldering tape laid on the first replacement film from being shifted in position, thereby ultimately ensuring the repair quality of the film-coated battery string.

[0079] Due to the influence of gravity or internal stress, if the two sets of welding ribbons are not controlled during the process of detaching from the defective battery cell, the welding ribbons are likely to shift and sag. In order to solve this problem, optionally, during the process of detaching the two sets of welding ribbons from the defective battery cell, the two sets of welding ribbons are guided to move along their length direction. In this way, the welding ribbons can be prevented from shifting and sagging, ensuring that the free ends of the welding ribbons remain in the preset position, which is convenient for picking up the welding ribbons before laying them.

[0080] Optionally, in step S1, before controlling the battery string components on both sides of the defective battery cell to translate away from the defective battery cell, the defective battery cell or the adhesive film on the defective battery cell is first pressed or adsorbed.

[0081] In this way, the defective battery cell and the adhesive film thereon can be ensured to remain stationary, and the first group of welding ribbons and the second group of welding ribbons can be more smoothly detached from the defective battery cell while controlling the battery string components on both sides of the defective battery cell to translate away from the defective battery cell.

[0082] Figures 3 to 6 The repair process of the BC film-coated battery string is shown:

[0083] like Figure 3 As shown, step S1 is implemented, that is, heating the adhesive film bonded to the defective cell to soften the adhesive film bonded to the defective cell. Then, the battery string components on both sides of the defective cell are controlled to translate away from the defective cell, so that the two groups of welding strips 102 bonded to the defective cell are separated from the defective cell.

[0084] Next, step S2 is performed, ie, removing the defective battery cell with the adhesive film.

[0085] Then, step S3 is implemented, that is, according to the stringing rules of the BC film-coated battery string, the replacement film, the replacement battery cell and the two sets of welding ribbons separated from the defective battery cell are laid in the position vacated after the defective battery cell is removed, so as to complete the repair of the BC film-coated battery string. Step S3 specifically includes the following steps:

[0086] S31, such as Figure 4 As shown, a first replacement adhesive film 103 is laid on the position vacated after the defective battery cell is removed, and the first replacement adhesive film 103 is heated to make the first replacement adhesive film 103 sticky.

[0087] S32, such as Figure 5 As shown, the battery string components on both sides are controlled to translate back to their positions, and two groups of welding ribbons 102 are laid on the first replacement adhesive film 103 , and the two groups of welding ribbons 102 are bonded and fixed to the first replacement adhesive film 103 .

[0088] S33, such as Figure 6 As shown, the replacement cell sheet 101 is laid, and the first replacement adhesive film is heated again, so that the first replacement adhesive film adheres the two sets of welding ribbons 102 to the replacement cell sheet 101 .

[0089] At this point, the repair of the BC coated battery string has been completed.

[0090] Optionally, step S32 includes the following steps:

[0091] S321, control the battery string component on the first side to translate back to its original position, and at the same time clamp and control the free end of the first group of welding strips to move the first group of welding strips to the top of the first replacement adhesive film. Press down the non-free end of the first group of welding strips so that the non-free end of the first group of welding strips is bonded and fixed to the first replacement adhesive film. Release the free end of the first group of welding strips so that the free end of the first group of welding strips falls onto the first replacement adhesive film.

[0092] During the translation and return process of the battery string component on the first side, the free ends of the first group of welding ribbons are clamped and controlled for laying, so as to ensure the laying position accuracy of the first group of welding ribbons; after the first group of welding ribbons are moved above the first replacement adhesive film, the non-free ends of the first group of welding ribbons are pressed downward first, and then the free ends of the first group of welding ribbons are released after the non-free ends are bonded to the first replacement adhesive film, so as to avoid the welding ribbons from being offset after the first group of welding ribbons are directly released, thereby ensuring that the first group of welding ribbons are accurately and firmly bonded to the corresponding positions of the first replacement adhesive film.

[0093] S322, control the battery string component on the second side to translate back to its original position, and at the same time clamp and control the free end of the second group of welding ribbons to move the second group of welding ribbons to the top of the first replacement adhesive film; press down the non-free end of the second group of welding ribbons to make the non-free end of the second group of welding ribbons adhered and fixed on the first replacement adhesive film; release the free end of the second group of welding ribbons to make the free end of the second group of welding ribbons fall onto the first replacement adhesive film.

[0094] Similarly, during the translation and return process of the battery string component on the second side, the free end of the second group of welding ribbons is clamped and controlled for laying, so as to ensure the laying position accuracy of the second group of welding ribbons; after the second group of welding ribbons are moved above the first replacement adhesive film, the non-free end of the second group of welding ribbons is pressed down first, and the free end of the second group of welding ribbons is released after the non-free end is bonded to the first replacement adhesive film, so as to avoid the deviation of the welding ribbons after the second group of welding ribbons are directly released.

[0095] It should be noted here that the above steps S321 and S322 can be implemented in sequence, that is, after laying the first set of welding tapes on the first replacement film, the second set of welding tapes are laid on the first replacement film. Steps S321 and S322 can also be implemented simultaneously, and optionally, the first set of welding tapes and the second set of welding tapes are moved to the top of the first replacement film simultaneously, the non-free ends of the two sets of welding tapes are pressed downward simultaneously, and then the free ends of the two sets of welding tapes are released simultaneously.

[0096] Optionally, in step 321, after releasing the free ends of the first group of welding strips so that the free ends of the first group of welding strips fall onto the first replacement adhesive film, the film-coated battery string rework method of the present application also includes: pressing down the free ends of the first group of welding strips so that the free ends of the first group of welding strips are bonded and fixed to the first replacement adhesive film, thereby ensuring that the free ends of the first group of welding strips can be accurately and firmly bonded and fixed to the corresponding positions of the first replacement adhesive film.

[0097] Optionally, in step 322, after releasing the free ends of the second group of welding strips so that the free ends of the second group of welding strips fall onto the first replacement adhesive film, the film-coated battery string rework method of the present application also includes: pressing down the free ends of the second group of welding strips so that the free ends of the second group of welding strips are bonded and fixed to the first replacement adhesive film, thereby ensuring that the free ends of the second group of welding strips can be accurately and firmly bonded to the corresponding positions of the first replacement adhesive film.

[0098] Optionally, in step S33, before heating the first replacement adhesive film again, the replacement battery cell is pressed against the first replacement adhesive film. In this way, sufficient contact between the replacement battery cell and the first replacement adhesive film can be achieved, ensuring that when the first replacement adhesive film is heated again, the first replacement adhesive film can firmly adhere the solder strip to the replacement battery cell.

[0099] Figures 8 to 13 The repair process of the double-sided film-coated battery string is shown:

[0100] like Figure 8 As shown, step S1 is implemented, that is, firstly, the adhesive film bonded to the defective cell is heated to soften the adhesive film bonded to the defective cell. Then, the cell string components on both sides of the defective cell are controlled to translate away from the defective cell, so that the two groups of welding strips 102 bonded to the defective cell are separated from the defective cell.

[0101] Next, step S2 is performed, ie, removing the defective battery cell with the adhesive film.

[0102] Then, step S3 is implemented, that is, according to the stringing rules of the double-sided film battery string, the replacement film, the replacement battery cell and the two sets of welding ribbons separated from the defective battery cell are laid in the position vacated after the defective battery cell is removed. Step S3 specifically includes the following steps:

[0103] S34, such as Fig. 9 As shown, a first replacement adhesive film 103 is laid on the position vacated after the defective battery cell is removed, and the first replacement adhesive film 103 is heated to make the first replacement adhesive film 103 sticky.

[0104] S35, such as Fig.10As shown, the battery string component on the first side is controlled to translate back to its original position, and the first group of welding ribbons 102 is laid on the first replacement adhesive film 103, so that the first group of welding ribbons 102 is bonded and fixed to the first replacement adhesive film 10.

[0105] S36, such as Fig.11 As shown, the replacement battery sheet 101 is laid.

[0106] S37, such as Fig.12 As shown, firstly, the battery string components on the second side are controlled to translate and return to their positions, so that the second group of welding strips 102 are moved above the replacement battery sheet 101. Fig.13 As shown, the second replacement adhesive film 103 is then laid, and the first replacement adhesive film 103 and the second replacement adhesive film 103 are heated so that the first replacement adhesive film and the second replacement adhesive film 103 adhere the two groups of welding ribbons 102 to the replacement battery cell 101 .

[0107] At this point, the repair of the double-sided film-coated battery string has been completed.

[0108] Optionally, step S35 includes the following steps:

[0109] S351, controlling the battery string component on the first side to translate back to its original position, while clamping and controlling the free ends of the first group of welding ribbons to move the first group of welding ribbons to above the first replacement adhesive film.

[0110] S352, pressing the non-free ends of the first group of welding strips downwards so that the non-free ends of the first group of welding strips are bonded and fixed on the first replacement adhesive film.

[0111] S353, releasing the free ends of the first group of welding ribbons so that the free ends of the first group of welding ribbons fall onto the first replacement adhesive film.

[0112] During the translation and return process of the battery string component on the first side, the free ends of the first group of welding ribbons are clamped and controlled for laying, so as to ensure the laying position accuracy of the first group of welding ribbons; after the first group of welding ribbons are moved above the first replacement adhesive film, the non-free ends of the first group of welding ribbons are pressed downward first, and then the free ends of the first group of welding ribbons are released after the non-free ends are bonded to the first replacement adhesive film, so as to avoid the welding ribbons from being offset after the first group of welding ribbons are directly released, thereby ensuring that the first group of welding ribbons are accurately and firmly bonded to the corresponding positions of the first replacement adhesive film.

[0113] Optionally, after step 353, the film-covered battery string repair method of the present application further includes: pressing downward the free ends of the first group of welding strips so that the free ends of the first group of welding strips are bonded and fixed to the first replacement adhesive film, thereby ensuring that the free ends of the first group of welding strips are accurately and firmly bonded and fixed to the corresponding positions of the first replacement adhesive film.

[0114] Optionally, step S37 includes the following steps:

[0115] S371, control the battery string component on the second side to translate back to its original position, and at the same time clamp and control the free ends of the second group of welding ribbons to move and keep the second group of welding ribbons above the replacement battery cell.

[0116] S372, lay the second replacement film on the second group of welding strips, press down the second replacement film portion corresponding to the non-free end of the second group of welding strips, release the free end of the second group of welding strips, and press down the second replacement film portion corresponding to the free end of the second group of welding strips.

[0117] S373, heating the first replacement adhesive film and the second replacement adhesive film so that the first replacement adhesive film and the second replacement adhesive film adhere the two sets of welding ribbons to the replacement battery cell.

[0118] The battery string component on the second side is controlled to translate back to its original position, and the free end of the second group of welding strips is clamped and controlled and laid, so as to ensure the laying position accuracy of the second group of welding strips; after laying the second replacement adhesive film on the second group of welding strips, the second replacement adhesive film portion corresponding to the non-free end of the second group of welding strips is first pressed down, so that the non-free end of the second group of welding strips can be pressed and positioned to the corresponding position of the replacement battery sheet, and then the free end of the second group of welding strips is released to avoid the position shift of the second group of welding strips. By pressing down the second replacement adhesive film portion corresponding to the free end of the second group of welding strips when releasing the free end of the second group of welding strips, the free end of the second group of welding strips can also be pressed and positioned to the corresponding position of the replacement battery sheet. Finally, by heating the first replacement adhesive film and the second replacement adhesive film, the first replacement adhesive film and the second replacement adhesive film can be fully released to bond the two groups of welding strips to the replacement battery sheet.

[0119] Optionally, between step S36 and step S37, the film-coated battery string rework method of the present application further includes: heating the first replacement adhesive film so that the first replacement adhesive film adheres the first group of welding strips to the replacement battery cell. That is, after laying the replacement battery cell, the first replacement adhesive film is heated again, the first group of welding strips are first adhered to the replacement battery cell, and then the second group of welding strips and the second replacement adhesive film are laid, so as to ensure the rework quality of the double-sided film-coated battery string.

[0120] In actual repair, the defective battery cell may be any battery cell in the film-coated battery string.

[0121] When the defective cell is located in the middle of the film-coated cell string, the cell string components on both sides of the defective cell each have at least one cell. Optionally, in step S1, before controlling the cell string components on both sides of the defective cell to translate away from the defective cell, the cell close to the defective cell in the cell string components on both sides are pressed or adsorbed, so as to facilitate the first group of welding ribbons and the second group of welding ribbons to smoothly detach from the defective cell.

[0122] When the defective cell is located at the first end of the film-coated cell string, the cell string component located on the first side of the defective cell only includes the first group of welding strips, and the cell string component located on the second side of the defective cell has at least one cell. Optionally, in step S1, before controlling the cell string components on both sides of the defective cell to translate away from the defective cell, the ends of the first group of welding strips extending out of the defective cell are clamped, and the cell close to the defective cell in the cell string component on the second side of the defective cell is pressed or adsorbed, so as to facilitate the first group of welding strips and the second group of welding strips to smoothly detach from the defective cell.

[0123] When the defective cell is located at the second end of the film-coated cell string, the cell string component located on the second side of the defective cell only includes the second group of welding strips, and the cell string component located on the first side of the defective cell has at least one cell. Optionally, in step S1, before controlling the cell string components on both sides of the defective cell to translate away from the defective cell, clamp the ends of the second group of welding strips extending out of the defective cell, and press or adsorb the cell close to the defective cell in the cell string component on the first side of the defective cell, so as to facilitate the smooth separation of the first group of welding strips and the second group of welding strips from the defective cell.

[0124] The present application also provides a film-covered battery string repair device, which can be used to implement the film-covered battery string repair method of any of the above embodiments. Figure 14 to Figure 15 As shown, the film-covered battery string repair equipment of the present application includes a repair station 1, a heating mechanism 2, a conveying mechanism 3 and a welding ribbon pulling mechanism 4, wherein:

[0125] The rework station 1 comprises a first side loading platform 11, a middle loading platform 12 and a second side loading platform 13, wherein:

[0126] The middle support platform 12 is used to support defective battery cells in the film-coated battery string, the first side support platform 11 is used to support the battery string components on the first side of the defective battery cells, and the second side support platform 13 is used to support the battery string components on the second side of the defective battery cells.

[0127] The heating mechanism 2 is configured to be movable above the intermediate carrier platform 12 , and the heating mechanism 2 is used to heat the adhesive film adhered to the defective battery cell, so that the adhesive film adhered to the defective battery cell is softened.

[0128] The first side loading platform 11 and the second side loading platform 13 are configured to translate away from the middle loading platform 12 so that the two groups of welding ribbons adhered to the defective battery cell are separated from the defective battery cell.

[0129] The transport mechanism 3 is used to remove the defective battery cell with the adhesive film from the middle carrying platform 12 .

[0130] The first side loading platform 11 and the second side loading platform 13 are also configured to translate back to the middle loading platform 12, and the welding tape pulling mechanism 4 is configured to control the free ends of the two groups of welding tapes separated from the defective battery cell, and cooperate with the conveying mechanism 3 to lay the replacement film, the replacement battery cell and the two groups of welding tapes on the middle loading platform 12 according to the stringing rule of the film-coated battery string, wherein after laying the first replacement film, the middle loading platform 12 is also used to heat the first replacement film so that the first replacement film releases its viscosity to bond and fix at least one of the two groups of welding tapes laid on the first replacement film. After completing the laying of the replacement film, the replacement battery cell and the two groups of welding tapes, the heating mechanism 2 is also used to heat the replacement film so that the two groups of welding tapes are bonded to the replacement battery cell by the replacement film.

[0131] It can be seen that, through the cooperation of the rework station 1, the heating mechanism 2, the conveying mechanism 3 and the welding tape pulling mechanism 4, the film-coated battery string rework equipment of the present application realizes the automatic rework of the film-coated battery string.

[0132] In particular, after laying the first replacement film, the intermediate supporting platform 12 heats the first replacement film so that the first replacement film releases its stickiness to ensure that the soldering tape laid on the first replacement film can be firmly bonded to the first replacement film. This can prevent the soldering tape laid on the first replacement film from being displaced, thereby ultimately ensuring the repair quality of the film-coated battery string.

[0133] Continue to refer Figures 3 to 6 The repair process of the BC coated battery string by the coated battery string repair equipment of this application is as follows.

[0134] First, if Figure 3 As shown, the BC coated battery string to be repaired is placed with the back side facing down on the repair station 1, and it is ensured that the defective battery cell is located on the middle loading platform 12, the battery string component on the first side of the defective battery cell is located on the first side loading platform 11, and the battery string component on the second side of the defective battery cell is located on the second side loading platform 13. Then, the heating mechanism 2 moves to the top of the middle loading platform 12, and the heating mechanism 2 heats the adhesive film adhered to the defective battery cell to soften the adhesive film adhered to the defective battery cell. Subsequently, the first side loading platform 11 and the second side loading platform 13 are translated away from the middle loading platform 12, so that the two groups of welding strips 102 adhered to the defective battery cell are separated from the defective battery cell.

[0135] Next, the transport mechanism 3 removes the defective battery cell with the adhesive film from the middle carrying platform 12 .

[0136] Then, if Figure 4 As shown, the transport mechanism 3 lays the first replacement adhesive film 103 on the intermediate loading platform 12. The intermediate loading platform 12 heats the first replacement adhesive film 103 to make the first replacement adhesive film 103 sticky.

[0137] Then, if Figure 5 As shown, the first side support platform 11 and the second side support platform 13 are translated toward the middle support platform 12 and returned to their positions. At the same time, the solder tape traction mechanism 4 controls the free ends of the two groups of solder tapes 102 detached from the defective battery cells, thereby laying the two groups of solder tapes 102 onto the first replacement adhesive film 103, and the two groups of solder tapes 102 are bonded and fixed to the first replacement adhesive film 103.

[0138] Finally, if Figure 6 As shown, the transport mechanism 3 lays the replacement cell 101 on the first replacement adhesive film. The heating mechanism 2 moves again to the top of the intermediate carrier 12 to heat the first replacement adhesive film, so that the first replacement adhesive film adheres the two sets of welding ribbons 102 to the replacement cell 101.

[0139] At this point, the repair of the BC coated battery string has been completed.

[0140] Continue to refer Figures 8 to 13 The repair process of the double-sided film-coated battery string by the film-coated battery string repair equipment of the present application is as follows.

[0141] First, if Figure 8 As shown, the double-sided film-coated battery string to be repaired is placed on the repair station 1, and it is ensured that the defective battery cell is located on the middle loading platform 12, the battery string component on the first side of the defective battery cell is located on the first side loading platform 11, and the battery string component on the second side of the defective battery cell is located on the second side loading platform 13. Then, the heating mechanism 2 moves to the top of the middle loading platform 12, and the heating mechanism 2 heats the adhesive film adhered to the defective battery cell to soften the adhesive film adhered to the defective battery cell. Subsequently, the first side loading platform 11 and the second side loading platform 13 are translated away from the middle loading platform 12, so that the two groups of welding strips 102 adhered to the defective battery cell are separated from the defective battery cell.

[0142] Next, the transport mechanism 3 removes the defective battery cell with the adhesive film from the middle carrying platform 12 .

[0143] Then, if Fig. 9 As shown, the transport mechanism 3 lays the first replacement adhesive film 103 on the intermediate loading platform 12. The intermediate loading platform 12 heats the first replacement adhesive film 103 to make the first replacement adhesive film 103 sticky.

[0144] Then, if Fig.10 As shown, the first side support platform 11 is translated toward the middle support platform 12 and returned to its original position. At the same time, the solder tape traction mechanism 4 controls the free ends of the first group of solder tapes 102 detached from the defective battery cell to lay the first group of solder tapes 102 on the first replacement adhesive film 103, so that the first group of solder tapes 102 are bonded and fixed to the first replacement adhesive film 103.

[0145] Then, if Fig.11 As shown, the transport mechanism 3 lays the replacement battery sheet 101 onto the first replacement adhesive film.

[0146] Then, if Fig.12 As shown, the second side platform 13 moves back to its original position toward the middle platform 12. At the same time, the welding ribbon traction mechanism 4 controls the free end of the second group of welding ribbons 102 detached from the defective battery cell, so that the second group of welding ribbons 102 moves to above the replacement battery cell 101.

[0147] Then, if Fig.13 As shown, the transport mechanism 3 lays the second replacement adhesive film 103. Subsequently, the heating mechanism 2 moves to the top of the intermediate carrier 12 again, and heats the first replacement adhesive film and the second replacement adhesive film, so that the first replacement adhesive film and the second replacement adhesive film 103 adhere the two sets of welding tapes to the replacement battery cell 101.

[0148] At this point, the repair of the double-sided film-coated battery string has been completed.

[0149] like Figure 15 to Figure 16 As shown, optionally, the film-covered battery string repair device of the present application further includes guide combs 5 arranged on both sides of the middle carrier 12. In the process of the two groups of welding ribbons 102 being separated from the defective battery cells, the guide combs 5 are used to guide the welding ribbons on the corresponding sides to move in their length direction. In this way, the welding ribbons 102 can be prevented from being offset and sagging, ensuring that the free ends of the welding ribbons 102 remain in the preset position.

[0150] Optionally, the guide comb 5 includes a plurality of guide teeth arranged along the width direction of the rework station 1 , a guide groove is formed between each two adjacent guide teeth, and each guide groove is used to guide a welding strip.

[0151] Optionally, a heating component for heating the first replacement adhesive film is provided in the intermediate carrier 12. The heating component is, for example, a heating rod plugged into the intermediate carrier 12. After the first replacement adhesive film is laid on the intermediate carrier 12, the intermediate carrier 12 can heat the first replacement adhesive film through the heating component to release the stickiness of the first replacement adhesive film.

[0152] Optionally, a first adsorption component is provided in the middle loading platform 12, and before the first side loading platform 11 and the second side loading platform 13 are translated away from the middle loading platform 12, the first adsorption component 12 is used to adsorb and fix the adhesive film on the defective battery cell on the middle loading platform 12. In this way, it can be ensured that when the first side loading platform 11 and the second side loading platform 13 are translated away from the middle loading platform, the first group of welding ribbons and the second group of welding ribbons adhered to the defective battery cell can be smoothly separated from the defective battery cell.

[0153] The first adsorption component, for example, includes an exhaust pipe arranged in the intermediate supporting platform 12 and connected to the adsorption holes on the supporting surface of the intermediate supporting platform 12. The exhaust pipe is connected to an external exhaust device. The exhaust device exhausts air from the adsorption holes through the exhaust pipe, thereby generating an adsorption force on the supporting surface of the intermediate supporting platform 12.

[0154] Optionally, an intermediate pressing component is provided at the bottom of the heating mechanism 2, and before the first side bearing platform 11 and the second side bearing platform 13 are translated away from the intermediate bearing platform 12, the intermediate pressing component is used to press the defective battery cell onto the intermediate bearing platform 12. In this way, it can also be ensured that when the first side bearing platform 11 and the second side bearing platform 13 are translated away from the intermediate bearing platform 12, the first group of welding strips and the second group of welding strips bonded to the defective battery cell can be smoothly separated from the defective battery cell. The intermediate pressing component is, for example, a pressing needle arranged in an array, and the pressing needle avoids the position where the welding strip is located to press the defective battery cell, so that the welding strip can be smoothly pulled out.

[0155] In addition, when repairing a BC film-coated battery string, after the replacement battery cell is laid, the middle pressing component is used to press down the laid replacement battery cell, so that the first replacement adhesive film can more firmly bond the two sets of soldering tapes to the replacement battery cell. When repairing a double-sided film-coated battery string, after the second replacement adhesive film is laid, the middle pressing component is used to press down the laid second replacement adhesive film, so that the first replacement adhesive film and the second replacement adhesive film can more firmly bond the corresponding soldering tapes to the replacement battery cell.

[0156] Continue to refer Fig.19 As shown, optionally, the intermediate pressing assembly includes a first pressing portion 21 and a second pressing portion 22 arranged side by side along the length direction of the rework station 1 .

[0157] like Fig.19 As shown, when repairing the double-sided film-coated battery string, the second replacement film 103 ( Fig. 9After the replacement adhesive film located on the upper layer in the second group of welding ribbons 102 is laid on the second group of welding ribbons 102. The first pressing part 21 first presses down the second replacement adhesive film part corresponding to the non-free end of the second group of welding ribbons 102, so that the non-free end of the second group of welding ribbons 102 is pressed and positioned to the corresponding position of the replacement battery sheet, at this time, the welding ribbon traction mechanism 4 can release the free end of the second group of welding ribbons 102. After the welding ribbon traction mechanism 4 releases the free end of the second group of welding ribbons 102, the second pressing part 22 presses down the second replacement adhesive film part corresponding to the free end of the second group of welding ribbons 102, so that the free end of the second group of welding ribbons 102 is pressed and positioned to the corresponding position of the replacement battery sheet.

[0158] The dimension of the first clamping portion 21 in the length direction of the rework station 1 is greater than the dimension of the second clamping portion 22 in the length direction of the rework station 1, so that the solder strip can be fully clamped and positioned before the solder strip pulling mechanism 4 releases the solder strip, thereby avoiding position deviation after the solder strip is released.

[0159] When repairing the BC coated battery string, after the replacement battery cell is laid, the first pressing portion 21 and the second pressing portion 22 simultaneously press the replacement battery cell downward, so that the first replacement adhesive film can more firmly adhere the two sets of welding ribbons to the replacement battery cell.

[0160] like Figures 14 to 16 As shown, optionally, the welding tape traction mechanism 4 includes a first welding tape traction part 41 and a second welding tape traction part 42, wherein: the first welding tape traction part 41 is arranged on the first side of the intermediate loading platform 12, and when the second side loading platform 13 is translated toward the intermediate loading platform 12, the first welding tape traction part 41 clamps the free end of the second group of welding tapes detached from the defective battery sheet, and is translated synchronously with the second side loading platform 13, so as to lay the second group of welding tapes on the intermediate loading platform 12. The second welding tape traction part 42 is arranged on the second side of the intermediate loading platform 12, and when the first side loading platform 11 is translated toward the intermediate loading platform 12, the second welding tape traction part 42 clamps the free end of the first group of welding tapes detached from the defective battery sheet, and is translated synchronously with the first side loading platform 11, so as to lay the first group of welding tapes on the intermediate loading platform 12.

[0161] Through the cooperation between the first solder tape traction part 41 and the second side loading platform 13, and the cooperation between the second solder tape traction part 42 and the first side loading platform 11, it is ensured that the second group of solder tapes and the first group of solder tapes can be efficiently laid on the middle loading platform, thereby improving the rework efficiency.

[0162] Optionally, the first welding strip pulling portion 41 and the second welding strip pulling portion 42 have the same structure. Taking the first welding strip pulling portion 41 as an example, Fig.17As shown, it includes a driving component, a mounting frame 411, a clamping driving component 412 and a plurality of clamping jaws 413. Among them, the mounting frame 411 is connected to the driving end of the driving component, and a plurality of clamping jaws 413 are arranged side by side on the mounting frame 411 along the width direction of the rework station 1, and each clamping jaw 413 is used to clamp a welding strip. The clamping driving component 412 is arranged on the mounting frame 411, and the clamping driving component 412 is used to synchronously drive the plurality of clamping jaws 413 to clamp and open, so as to clamp and release the second group of welding strips. The driving component is at least used to drive the plurality of clamping jaws 413 to translate, so that the plurality of clamping jaws 413 approach and clamp the second group of welding strips, and translate synchronously with the second side carrier 11, so as to lay the second group of welding strips on the middle carrier 12.

[0163] Optionally, a second adsorption assembly is provided at one end of the first side loading platform 11 close to the middle loading platform 12, and before the first side loading platform 11 is translated away from the middle loading platform 12, the second adsorption assembly is used to adsorb the battery cell close to the defective battery cell in the battery string component on the first side onto the first side loading platform. This helps the first group of welding ribbons to smoothly detach from the defective battery cell.

[0164] The second adsorption component, for example, includes an exhaust pipe arranged at the end of the first side support platform 11 and connected to the adsorption hole on the end support surface of the first side support platform 11. The exhaust pipe is connected to an external exhaust device, and the exhaust device exhausts air from the adsorption hole through the exhaust pipe, thereby generating an adsorption force on the end support surface of the first side support platform 11.

[0165] Similarly, optionally, a third adsorption component is provided at one end of the second side loading platform 13 close to the middle loading platform 12, and before the second side loading platform 13 is translated away from the middle loading platform 12, the third adsorption component is used to adsorb the battery cell close to the defective battery cell in the battery string component on the second side onto the second side loading platform 12. This helps the second group of welding ribbons to smoothly detach from the defective battery cell.

[0166] The third adsorption component, for example, includes an exhaust pipe arranged at the end of the second side support platform 13 and connected to the adsorption holes on the end support surface of the second side support platform 13. The exhaust pipe is connected to an external exhaust device. The exhaust device exhausts air from the adsorption holes through the exhaust pipe, thereby generating an adsorption force on the end support surface of the second side support platform 13.

[0167] Optionally, the film-covered battery string repair equipment of the present application further includes a first side pressing component 71 and a second side pressing component 72, wherein: the first side pressing component 71 is configured to be movable to the first side of the intermediate carrier 12, and before the first side carrier 11 is translated away from the intermediate carrier 12, the first side pressing component 71 is used to press the battery cell close to the defective battery cell in the battery string component on the first side onto the first side carrier 11. In this way, it is also helpful for the first group of welding strips to smoothly detach from the defective battery cell during the translation of the first side carrier 11 away from the intermediate carrier 12. The second side pressing component 72 is configured to be movable to the second side of the intermediate carrier 12, and before the second side carrier 13 is translated away from the intermediate carrier 12, the second side pressing component 72 is used to press the battery cell close to the defective battery cell in the battery string component on the second side onto the second side carrier 13. In this way, it is also helpful for the second group of welding strips to smoothly detach from the defective battery cell during the translation of the second side carrier 13 away from the intermediate carrier 12.

[0168] Optionally, the first side pressing component 71 and the second side pressing component 72 have the same structure, including pressing pins arranged in an array. Fig.16 and Fig.17 As shown, the first side pressing assembly 71 is installed on the first welding strip traction part 41 through the first cylinder 81 to achieve lifting and lowering relative to the first welding strip traction part 41. Similarly, the second side pressing assembly 72 is installed on the second welding strip traction part 42 through the second cylinder 82 to achieve lifting and lowering relative to the second welding strip traction part 42.

[0169] Optionally, the film-coated battery string repair equipment of the present application also includes a first solder strip clamping mechanism and a second solder strip clamping mechanism, wherein: the first solder strip clamping mechanism is installed on the first side support platform 11 and is close to the middle support platform 12, and the second solder strip clamping mechanism is installed on the second side support platform 13 and is close to the middle support platform 12.

[0170] When the defective cell is located at the first end of the film-coated cell string, the cell string component located on the first side of the defective cell only includes the first group of welding strips. Before the first side platform 11 is translated away from the middle platform, the first welding strip clamping mechanism is used to clamp the end of the first group of welding strips extending out of the defective cell. In this way, it can be ensured that during the translation of the first side platform 11 away from the middle platform 12, the first group of welding strips can be translated away from the defective cell, so as to be smoothly separated from the defective cell.

[0171] When the defective cell is located at the second end of the film-coated cell string, the cell string component located on the second side of the defective cell only includes the second group of welding strips. Before the second side platform 13 is translated away from the middle platform 12, the second welding strip clamping mechanism is used to clamp the end of the second group of welding strips extending out of the defective cell. In this way, it can be ensured that during the translation of the second side platform 13 away from the middle platform 12, the second group of welding strips can be translated away from the defective cell, so as to be smoothly separated from the defective cell.

[0172] Optionally, the first solder strip clamping mechanism and the second solder strip clamping mechanism have the same structure. Taking the first solder strip clamping mechanism as an example, Figure 20 to Figure 22 As shown, the first solder strip clamping mechanism 6 includes a clamping drive portion 61 and a plurality of clamps 62, wherein: the plurality of clamps 62 are hingedly connected to the first side support platform 11 ( Figure 20 to Figure 22 Only the bottom of the first side platform 11 near the middle platform 12 is shown in the figure. A clamping opening 63 opening toward the middle platform 12 is formed between the upper end of each clamp 62 and the first side platform 11. Each clamping opening 63 clamps one of the first group of welding strips. The clamping drive unit 61 is arranged on the first side platform 11. The clamping drive unit 61 is used to synchronously drive the plurality of clamps 62 to rotate relative to the first side platform 11, so as to drive each clamp 62 to clamp or release the welding strip in the corresponding clamping opening 63.

[0173] Optionally, the film-coated battery string repair equipment of the present application also includes a solder strip pressing mechanism, which is used to press the non-free end of the solder strip downward so that the non-free end of the solder strip adheres to the first replacement adhesive film, thereby ensuring that the solder strip is accurately and firmly bonded to the first replacement adhesive film. Of course, the solder strip pressing mechanism can also be used to press the free end of the solder strip downward so that the free end of the solder strip adheres to the first replacement adhesive film. In order to prevent the solder strip pressing mechanism from adhering to the first replacement adhesive film, optionally, the pressing end of the solder strip pressing mechanism can adopt a flat plate structure, and an anti-sticking layer is provided on the bottom surface (i.e., the pressing surface) of the flat plate structure.

[0174] like Fig.18 As shown, optionally, the transport mechanism 3 includes a cell transport portion 31 and an adhesive film transport portion 32, wherein the cell transport portion 31 is used to remove defective cells with adhesive films from the intermediate carrier 12, and the cell transport portion 31 is also used to lay replacement cells on the intermediate carrier 12. The adhesive film transport portion 32 is used to lay replacement adhesive films on the intermediate carrier 12.

[0175] Optionally, the cell transporting unit 31 includes a driving component and a cell adsorbing member connected to the driving component, and the driving component is used to drive the cell adsorbing member to move, so as to drive the cell adsorbing member to remove the defective cell with the adhesive film from the intermediate carrier 12, or to lay a replacement cell on the intermediate carrier 12. The cell adsorbing member can be a suction cup assembly, or a suction plate with adsorption holes, etc.

[0176] Optionally, the film transporting part 32 includes a driving component and a film adsorbing part connected to the driving component, and the driving component is used to drive the film adsorbing part to move, so as to drive the film adsorbing part to lay the replacement film on the intermediate supporting platform 12. The film adsorbing part can be an adsorption plate with adsorption holes. In addition, the film transporting part 32 can also serve as the aforementioned soldering tape pressing mechanism. After the first replacement film is laid, after at least one of the first group of soldering tapes and the second group of soldering tapes is laid on the first replacement film, the pressing operation on the non-free end of the soldering tape is continued to save equipment costs. Of course, the film transporting part 32 can also be used to press the free end of the soldering tape downward so that the free end of the soldering tape is bonded to the first replacement film.

[0177] The cell conveying unit 31 and the film conveying unit 32 may share the same driving component, or may be provided with independent driving components.

[0178] The above description of the present application is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Moreover, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. A film-coated battery string repair device, characterized in that: The film-covered battery string repair equipment includes a repair station, a heating mechanism, a transport mechanism and a welding ribbon pulling mechanism, wherein: The rework station includes a first side loading station, a middle loading station and a second side loading station, wherein: The middle carrier is used to carry the defective battery cell in the film-coated battery string, the first side carrier is used to carry the battery string component on the first side of the defective battery cell, and the second side carrier is used to carry the battery string component on the second side of the defective battery cell; The heating mechanism is configured to be movable above the intermediate carrier, and the heating mechanism is used to heat the adhesive film adhered to the defective battery cell to soften the adhesive film adhered to the defective battery cell; The first side loading platform and the second side loading platform are configured to translate away from the middle loading platform so that the two groups of welding ribbons adhered to the defective battery cell are separated from the defective battery cell; The transport mechanism is used to remove the defective battery sheet with the adhesive film from the intermediate carrying platform; The first side support platform and the second side support platform are also configured to translate back to their positions toward the middle support platform, and the welding tape traction mechanism is configured to control the free ends of the two groups of welding tapes detached from the defective battery cell, so as to cooperate with the conveying mechanism to lay the replacement film, the replacement battery cell and the two groups of welding tapes to the middle support platform according to the stringing rule of the film-coated battery string, wherein, after laying the first replacement film, the middle support platform is also used to heat the first replacement film so that the first replacement film releases its viscosity to bond and fix at least one of the two groups of welding tapes laid on the first replacement film; after completing the laying of the replacement film, the replacement battery cell and the two groups of welding tapes, the heating mechanism is also used to heat the replacement film so that the two groups of welding tapes are bonded to the replacement battery cell by the replacement film.

2. The film-covered battery string repair equipment according to claim 1, characterized in that: The film-covered battery string repair equipment also includes guide combs arranged on both sides of the middle bearing platform; During the process of the two groups of solder strips being separated from the defective solar cell, the guide comb is used to guide the solder strips on the corresponding sides to move in the length direction thereof; The guide comb comprises a plurality of guide teeth arranged along the width direction of the rework station, a guide groove is formed between two adjacent guide teeth, and each guide groove is used for guiding a welding strip.

3. The film-covered battery string repair equipment according to claim 1, characterized in that: A heating component for heating the first replacement adhesive film is arranged in the intermediate supporting platform.

4. The film-covered battery string repair equipment according to claim 1, characterized in that: A first adsorption component is disposed in the middle supporting platform. Before the first side supporting platform and the second side supporting platform are translated away from the middle supporting platform, the first adsorption component is used to adsorb and fix the adhesive film on the defective battery cell onto the middle supporting platform.

5. The film-covered battery string repair equipment according to claim 1, characterized in that: The bottom of the heating mechanism is provided with an intermediate pressing assembly, and before the first side bearing platform and the second side bearing platform are translated away from the intermediate bearing platform, the intermediate pressing assembly is used to press the defective battery cell onto the intermediate bearing platform; The intermediate pressing assembly is also used to press down the laid replacement battery sheet, or to press down the laid second replacement adhesive film.

6. The film-covered battery string repair equipment according to claim 5, characterized in that: The intermediate pressing assembly includes a first pressing portion and a second pressing portion arranged side by side along the length direction of the rework station; The first pressing portion and the second pressing portion are configured to synchronously press the replacement battery sheet downward; or; The first pressing portion is configured to press downward the second replacement film portion corresponding to the non-free end of the second group of solder strips. After the solder strip traction mechanism releases the free end of the second group of solder strips, the second pressing portion presses downward the second replacement film portion corresponding to the free end of the second group of solder strips.

7. The film-covered battery string repair equipment according to claim 1, characterized in that: The welding ribbon traction mechanism comprises a first welding ribbon traction part and a second welding ribbon traction part, wherein: The first welding ribbon pulling part is arranged on the first side of the middle loading platform, and when the second side loading platform is translated toward the middle loading platform, the first welding ribbon pulling part is configured to clamp the free ends of the second group of welding ribbons separated from the defective battery sheet, and translate synchronously with the second side loading platform to lay the second group of welding ribbons on the middle loading platform; The second welding tape traction portion is arranged on the second side of the intermediate loading platform. When the first side loading platform is translated toward the intermediate loading platform, the second welding tape traction portion is configured to clamp the free ends of the first group of welding tapes detached from the defective battery cell, and translate synchronously with the first side loading platform to lay the first group of welding tapes onto the intermediate loading platform.

8. The film-covered battery string repair equipment according to claim 1, characterized in that: A second adsorption assembly is provided at one end of the first side loading platform close to the middle loading platform, and before the first side loading platform is translated away from the middle loading platform, the second adsorption assembly is used to adsorb the battery cell close to the defective battery cell in the battery string component on the first side onto the first side loading platform; A third adsorption assembly is provided at one end of the second side support platform close to the middle support platform. Before the second side support platform is translated away from the middle support platform, the third adsorption assembly is used to adsorb the battery cell close to the defective battery cell in the battery string component on the second side onto the second side support platform.

9. The film-covered battery string repair equipment according to claim 1, characterized in that: The film-covered battery string repair equipment further includes a first side pressing component and a second side pressing component, wherein: The first side pressing assembly is configured to be movable to a first side of the middle loading platform, and before the first side loading platform is translated away from the middle loading platform, the first side pressing assembly is used to press the battery cell close to the defective battery cell in the battery string member on the first side onto the first side loading platform; The second side pressing assembly is configured to be movable to the second side of the intermediate supporting platform. Before the second side supporting platform is translated away from the intermediate supporting platform, the second side pressing assembly is used to press the battery cell close to the defective battery cell in the battery string component on the second side onto the second side supporting platform.

10. The film-covered battery string repair equipment according to claim 1, characterized in that: The film-covered battery string repair equipment further includes a first welding strip clamping mechanism and a second welding strip clamping mechanism, wherein: The first welding strip clamping mechanism is installed on the first side loading platform and close to the middle loading platform. When the defective battery cell is located at the first end of the film-covered battery string, the battery string component located on the first side of the defective battery cell only includes the first group of welding strips. Before the first side loading platform is translated away from the middle loading platform, the first welding strip clamping mechanism is used to clamp the end of the first group of welding strips extending out of the defective battery cell. The second welding strip clamping mechanism is installed on the second side supporting platform and close to the middle supporting platform. When the defective battery cell is located at the second end of the film-coated battery string, the battery string component located on the second side of the defective battery cell only includes the second group of welding strips. Before the second side supporting platform is translated away from the middle supporting platform, the second welding strip clamping mechanism is used to clamp the end of the second group of welding strips extending out of the defective battery cell.

11. The film-covered battery string repair equipment according to claim 1, characterized in that: The film-covered battery string repair equipment also includes a solder strip pressing mechanism, which is used to press the non-free end of the solder strip downward so that the non-free end of the solder strip is adhered to the first replacement adhesive film.

12. The film-covered battery string repair equipment according to claim 1, characterized in that: The conveying mechanism includes a cell conveying unit and a film conveying unit, wherein: The cell transporting unit is used to remove the defective cell with the adhesive film from the intermediate carrier, and the cell transporting unit is also used to lay a replacement cell on the intermediate carrier; The film conveying portion is used to lay the replacement film on the intermediate carrying platform.

13. The film-covered battery string repair equipment according to claim 12, characterized in that: The adhesive film conveying portion is further used to press the non-free end of the soldering tape downwards so that the non-free end of the soldering tape is adhered to the first replacement adhesive film.

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