CN114744078A - Battery string repairing device and repairing method - Google Patents

Battery string repairing device and repairing method Download PDF

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Publication number
CN114744078A
CN114744078A CN202210405116.8A CN202210405116A CN114744078A CN 114744078 A CN114744078 A CN 114744078A CN 202210405116 A CN202210405116 A CN 202210405116A CN 114744078 A CN114744078 A CN 114744078A
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China
Prior art keywords
welding
battery
disassembled
string
battery string
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CN202210405116.8A
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CN114744078B (en
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周希巍
王恒
王群
沈博
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Wuxi Autowell Technology Co Ltd
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Wuxi Autowell Technology Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F71/00—Manufacture or treatment of devices covered by this subclass
    • H10F71/137—Batch treatment of the devices
    • H10F71/1375—Apparatus for automatic interconnection of photovoltaic cells in a module
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/06—Solder feeding devices; Solder melting pans
    • B23K3/0607—Solder feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08—Auxiliary devices therefor
    • B23K3/087—Soldering or brazing jigs, fixtures or clamping means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
    • H10P72/30—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for conveying, e.g. between different workstations
    • H10P72/33—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for conveying, e.g. between different workstations into and out of processing chamber
    • H10P72/3302—Mechanical parts of transfer devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
    • H10P72/30—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for conveying, e.g. between different workstations
    • H10P72/33—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for conveying, e.g. between different workstations into and out of processing chamber
    • H10P72/3314—Continuous loading and unloading into and out of a processing chamber, e.g. transporting belts within processing chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)

Abstract

本发明提供了一种电池串返修装置及返修方法，其中的电池串返修装置包括解焊平台、焊接平台、电池串移载机构、焊带牵引机构、加热焊接机构及电池片供料机构，其中：解焊平台配合加热焊接机构将待返修电池串中的缺陷电池片与其上的焊带解焊并分离，得到第一拆解电池串和第二拆解电池串；电池串移载机构将第一拆解电池串和第二拆解电池串移载至焊接平台上；电池片供料机构将替换电池片上料至焊接平台上；焊带牵引机构将第一拆解电池串的拆解端焊带和第二拆解电池串的拆解端焊带叠放至替换电池片上；加热焊接机构还用于将拆解端焊带焊接至替换电池片上。本发明实现了对待返修电池串的自动拆解，并完成替换电池片的自动焊接。

Figure 202210405116

The invention provides a battery string repairing device and a repairing method, wherein the battery string repairing device includes a desoldering platform, a welding platform, a battery string transfer mechanism, a welding ribbon pulling mechanism, a heating welding mechanism and a battery sheet feeding mechanism, wherein : The desoldering platform cooperates with the heating and welding mechanism to desolder and separate the defective cells in the battery strings to be repaired from the welding tapes on them, so as to obtain the first disassembled battery string and the second disassembled battery string; The first disassembled battery string and the second disassembled battery string are transferred to the welding platform; the battery feeding mechanism feeds the replacement battery to the welding platform; the welding belt pulling mechanism welds the disassembled end of the first disassembled battery string The ribbon and the dismantling end welding strip of the second dismantling battery string are stacked on the replacement battery sheet; the heating welding mechanism is also used for welding the dismantling end welding strip to the replacement battery sheet. The invention realizes the automatic dismantling of the battery strings to be repaired, and completes the automatic welding of the replaced battery slices.

Figure 202210405116

Description

Battery string repairing device and repairing method
Technical Field
The invention relates to the field of battery production, in particular to a battery string repair device and a battery string repair method.
Background
When the defects such as insufficient soldering, hidden cracking and the like occur in the battery string, the battery string needs to be repaired, and for the defective battery piece which can be repaired through the insufficient soldering, the insufficient soldering of the insufficient solder points in the defective battery piece needs to be repaired; for the conditions of a defective cell with serious insufficient welding or a defective cell with hidden crack, the cell replacement operation needs to be implemented, namely the defective cell is removed and replaced by a good cell.
The traditional replacement repair mode is that the defect battery piece and the welding strip on the defect battery piece are welded together manually by using electric soldering iron, and then the replacement battery piece and the welding strip welded together are welded together again by using the electric soldering iron. The traditional replacement repair mode has low repair efficiency and unstable repair quality, and influences productivity.
Disclosure of Invention
In order to solve the problems of low efficiency and unstable repair quality of the traditional replacement repair mode, the invention provides a battery string repair device in a first aspect, and the detailed technical scheme is as follows:
the utility model provides a device is reprocessed to battery cluster, moves including unwelding platform, welded platform, battery cluster and carries mechanism, welds area drive mechanism, adds hot welding mechanism and battery piece feed mechanism, wherein:
the desoldering platform is used for bearing the battery string to be repaired, and is matched with the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired and a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
the battery string transferring mechanism is used for transferring the first disassembled battery string and the second disassembled battery string to the welding platform;
the battery piece feeding mechanism is used for feeding the replacement battery pieces onto the welding platform;
the welding strip traction mechanism is used for dragging and stacking the welding strip at the dismantling end of the first dismantled battery string and the welding strip at the dismantling end of the second dismantled battery string to corresponding positions of the replaced battery pieces;
and the heating welding mechanism is also used for welding the overlapped disassembled end welding strips to the corresponding replaced battery pieces to obtain the repaired battery string.
Through the matching of the desoldering platform, the welding platform, the battery string transferring mechanism, the welding strip traction mechanism, the heating welding mechanism and the battery piece feeding mechanism, the battery string repairing device realizes the automatic disassembly of the defective battery pieces in the battery string to be repaired, and automatically welds the replacement battery pieces to the positions left after the defective battery pieces are disassembled. Compared with the traditional replacement repair mode, the repair method greatly improves the repair efficiency of the battery string, and can ensure the repair quality.
In some embodiments, the desoldering platform comprises a first mount, a middle desoldering station, a first side desoldering station, and a second side desoldering station, wherein: the middle unsoldering table is fixedly arranged on the first mounting seat and used for bearing defective battery pieces in the battery string to be repaired; the first side desoldering table is connected to the first mounting seat in a sliding mode and used for bearing the battery piece located on the first side of the defective battery piece, and the first side desoldering table is configured to be capable of moving towards or away from the middle desoldering table in a translation mode; the second side unsoldering station is slidably connected to the first mounting seat, and the second side unsoldering station is used for bearing the battery piece located at the second side of the defective battery piece, and the second side unsoldering station is configured to be capable of translating towards or away from the middle unsoldering station.
By arranging the desoldering platform to include a middle desoldering table, and a first side desoldering table and a second side desoldering table that are translatable relative to the middle desoldering table. So that the unwelding platform can cooperate with the heating welding mechanism to unweld and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece, thereby obtaining a first disassembled battery string and a second disassembled battery string.
In some embodiments, a first adsorption hole for adsorbing the defective cell is arranged on the bearing surface of the middle desoldering table, and a first heating assembly is arranged in the middle desoldering table; the end part of the first side desoldering table, which is close to the middle desoldering table, is provided with a first side desoldering adsorption plate, and the first side desoldering adsorption plate is used for bearing and adsorbing an adjacent battery piece on the first side of the defective battery piece; the end part of the second side desoldering table close to the middle desoldering table is provided with a second side desoldering adsorption plate, and the second side desoldering adsorption plate is used for bearing and adsorbing adjacent battery pieces located on the second side of the defective battery piece.
The middle unsoldering table, the first side unsoldering adsorption plate and the second side unsoldering adsorption plate respectively adsorb the defective cell and the adjacent cells on the first side and the second side of the defective cell, so that the defective cell can be smoothly disassembled from the cell string to be repaired, and the adjacent cells on the first side and the second side of the defective cell are prevented from jumping in the disassembling process to influence the subsequent welding quality. And through set up first heating element in middle unsoldering platform, then can cooperate the heating that the heating-welding mechanism implemented the defect battery piece to promote and disassemble efficiency.
In some embodiments, the middle desoldering table, the first side desoldering adsorption plate and the second side desoldering adsorption plate are provided with solder strip limiting grooves.
The middle desoldering table, the first side desoldering adsorption plate and the second side desoldering adsorption plate are provided with the welding strip limiting grooves, after the repaired battery string is placed on the desoldering platform, the welding strips which are positioned on the lower surfaces of the defective battery piece and the adjacent battery pieces on the two sides of the defective battery piece are limited in the corresponding welding strip limiting grooves, on one hand, the welding strips on the lower surfaces of the defective battery pieces are positioned in the welding strip limiting grooves, the defective battery pieces can be directly contacted with the table top of the middle desoldering table, so that the middle desoldering table can more stably adsorb the defective battery pieces, and the situation that the defective battery pieces are taken away due to the pulling of the welding strips in the separation process can be avoided; on the other hand, the welding strips adjacent to the lower surfaces of the battery pieces on the two sides of the defective battery piece are also positioned in the welding strip limiting grooves, so that dislocation of the welding strips in the disassembling process can be prevented.
In some embodiments, the welding platform comprises a second mount, a middle weld station, a first side weld station, and a second side weld station, wherein: the middle welding table is fixedly arranged on the second mounting seat and used for bearing the replacement battery piece; the first side welding table is movably arranged on the second mounting seat and located on the first side of the middle welding table, the first side welding table is used for bearing the first disassembled battery string, and the first side welding table can be horizontally moved towards or away from the middle welding table and can be vertically lifted; the second side welding table is movably mounted on the second mounting seat and located on the second side of the middle welding table, the second side welding table is used for bearing a second disassembled battery string, and the second side welding table can move towards or away from the middle welding table in a horizontal moving mode and can ascend and descend in the vertical direction.
Through setting up welded platform to including middle welding bench to and first side welding bench, the second side welding bench that can translate and go up and down for middle welding bench, make welded platform can cooperate and weld the end solder strip of dismantling of taking drive mechanism with the first battery cluster of dismantling and the second end solder strip of dismantling pull the battery cluster pull and stack to the corresponding position department of replacement battery piece.
In some embodiments, a second adsorption hole for adsorbing the replacement battery piece is arranged on the bearing surface of the middle welding table, and a second heating assembly is arranged in the middle welding table; the end part of the first side welding table close to the middle welding table is provided with a first side welding adsorption plate, and the first side welding adsorption plate is used for bearing and adsorbing the disassembled end cell piece of the first disassembled cell string; the tip that second side welding bench is close to middle welding bench is equipped with second side welding adsorption plate, and second side welding adsorption plate is used for bearing and adsorbing the end cell piece of disassembling of battery cluster is disassembled to the second.
Middle welding platform, first side welding adsorption plate, second side welding adsorption plate adsorb respectively and live replacement battery piece, the first end battery piece of disassembling the battery cluster, the second end battery piece of disassembling the battery cluster of disassembling to guarantee that the end weld zone of disassembling of the first battery cluster of disassembling, the second end weld zone of disassembling the battery cluster can be stacked to the corresponding position department of replacement battery piece accurately. And through set up second heating element in middle welding bench, then can cooperate the heating that the heat-welding mechanism implemented the replacement battery piece to promote welding efficiency.
In some embodiments, the solder ribbon retracting mechanism comprises a first solder ribbon retracting mechanism and a second solder ribbon retracting mechanism, wherein: welding strips are welded on the upper surface and the lower surface of the battery piece in the battery string to be repaired, and the first welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the first disassembled battery string onto the middle welding table; the battery piece feeding mechanism feeds the replacement battery pieces and stacks the replacement battery pieces onto the dismantling end welding strips of the first dismantling battery strings; the second welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the second disassembled battery string onto the replacement battery piece; or the battery pieces in the battery string to be repaired are IBC battery pieces, the battery piece feeding mechanism feeds the replacement battery pieces onto the middle welding table, and the first welding strip traction mechanism is used for drawing the welding strips at the disassembling end of the first disassembled battery string and laying the welding strips on the replacement battery pieces; and the second welding strip traction mechanism is used for drawing and laying the welding strip at the disassembling end of the second disassembled battery string onto the replacement battery piece.
Through setting the solder strip drive mechanism to include first solder strip drive mechanism and second solder strip drive mechanism to under battery piece feed mechanism and welded platform cooperation action, two solder strip drive mechanisms can pull respectively the end solder strip of disassembling of first disassembling battery cluster and the end solder strip of disassembling of second disassembling battery cluster and stack to the corresponding position department of replacement battery piece fast, improve battery cluster and reprocess efficiency.
In some embodiments, the battery string repairing device further comprises a vision device, the vision device is arranged above the middle welding table and is used for determining the position of the replaced battery piece, and the solder strip traction mechanism is used for respectively dragging and stacking the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to the corresponding positions of the replaced battery piece according to the position of the replaced battery piece.
Through setting up vision device, realized the location to the replacement battery piece to make solder strip drive mechanism can accurately pull the end solder strip of disassembling of first disassembling battery cluster and the end solder strip of disassembling of second disassembling battery cluster and stack to the corresponding position of replacement battery piece on respectively, thereby guarantee welding accuracy.
In some embodiments, the heat welding mechanism includes a first heat welding mechanism and a second heat welding mechanism, wherein the first heat welding mechanism is disposed at the desoldering platform for heating the defective battery piece to desolder the defective battery piece from the welding strip welded on the defective battery piece; the second heating and welding mechanism is located at the welding platform and used for heating the replacement battery piece so as to weld the disassembling end welding strip of the first disassembled battery string and the disassembling end welding strip of the second disassembled battery string to the corresponding positions of the replacement battery piece.
By arranging the heat welding mechanism to comprise the first heat welding mechanism and the second heat welding mechanism, the desoldering platform and the welding platform can synchronously perform desoldering operation and welding operation, so that the repair efficiency of the battery string is further improved.
In some embodiments, the battery string rework device further comprises a flux application mechanism for applying flux to the detached-end solder strips of the first detached battery string and the detached-end solder strips of the second detached battery string prior to soldering.
Through setting up scaling powder coating mechanism, realized dismantling the automatic coating of scaling powder to the end welding area of dismantling of first battery cluster and the second and disassemble the end welding area of dismantling the battery cluster to welding efficiency, welding quality have been promoted.
In some embodiments, the cell sheet feeding mechanism comprises a first picking mechanism, a collating mechanism, and a second picking mechanism, wherein: the first picking mechanism is used for picking the replacement battery piece from the battery box and carrying the picked replacement battery piece to the arranging mechanism; the regulating mechanism is used for regulating and replacing the battery pieces; the second picking mechanism is used for picking the regulated replacement battery pieces from the regulating mechanism and carrying the battery pieces to the welding platform.
Through first pickup mechanism, regular mechanism and second pickup mechanism, replacement battery piece can be picked up from the battery box automatically to battery piece feeding mechanism to accomplish the regular back to the replacement battery piece, will replace the battery piece and expect to welding platform on automatically.
In some embodiments, the battery string rework device further comprises a tin supplement mechanism; the tin supplementing mechanism is arranged on the side of the desoldering platform and is used for supplementing tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or the tin supplementing mechanism is arranged at the side of the battery piece feeding mechanism and is used for supplementing tin for replacing the pad points of the battery pieces.
Through setting up mend tin mechanism, realized dismantling the end welding strip of disassembling of battery cluster and the second and disassembled the end welding strip's of battery cluster automatic mend tin, and/or mend tin to the automation of the welding plate point of replacement battery piece, guarantee that the welding strip after the desoldering can be in the same place with the smooth welding of replacement battery piece, and then guaranteed to reprocess welded quality.
In some embodiments, the battery string repair device further comprises a welding tool pick-and-place mechanism, wherein the welding tool pick-and-place mechanism is used for pressing the welding tool onto the disassembled end welding belt after the disassembled end welding belt required to be laid on the upper surface of the replaced battery piece is laid on the replaced battery piece, and removing the welding tool after welding.
The welding tool picking and placing mechanism is arranged, so that automatic carrying of the welding tool is achieved, the welding tool is used for pressing the welding strip and then performing subsequent welding operation, and welding of the welding strip and the battery piece is facilitated.
The invention also provides a battery string repairing method, which comprises the following steps:
feeding the battery string to be repaired to an unsoldering platform;
controlling the desoldering platform and the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired from a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
controlling a battery string transferring mechanism to feed the first disassembled battery string and the second disassembled battery string onto the welding platform;
controlling a battery piece feeding mechanism to feed replacement battery pieces onto the welding platform; controlling a solder strip traction mechanism to respectively pull and stack the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to corresponding positions of the replaced battery pieces;
and controlling the heating welding mechanism to weld the stacked disassembled end welding strips to the corresponding replacement battery pieces.
The battery string repairing method provided by the invention realizes automatic disassembly of the defective battery piece in the battery string to be repaired, and automatically welds the replacement battery piece to the position vacated by the disassembled defective battery piece.
In some embodiments, controlling the desoldering platform and the heating welding mechanism to desolder and separate a defective cell piece in the battery string to be repaired from a welding strip welded on the defective cell piece includes:
controlling a heating and welding mechanism to heat the defective battery piece, so that the welding strip welded on the defective battery piece is welded with the defective battery piece in a desoldering mode;
controlling the first side desoldering table to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle desoldering table in a horizontal moving mode, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and a first disassembled battery string is obtained; and controlling the second side desoldering table to drive the battery piece positioned on the second side of the defective battery piece to move away from the middle desoldering table, so that the welding strip welded on the adjacent battery piece on the second side of the defective battery piece is separated from the defective battery piece, and thus a second disassembled battery string is obtained.
Through controlling the cooperation action of the unsoldering platform and the heating and welding mechanism, the automatic disassembly of the defective battery pieces in the battery string to be repaired is realized, and therefore the first disassembled battery string and the second disassembled battery string are obtained.
In some embodiments, the welding strips are welded on the upper surface and the lower surface of the battery piece in the battery string to be repaired, the battery piece feeding mechanism is controlled to feed the replacement battery piece onto the welding platform, and the welding strip traction mechanism is controlled to respectively pull and stack the disassembling end welding strip of the first disassembled battery string and the disassembling end welding strip of the second disassembled battery string to corresponding positions of the replacement battery piece, including: controlling a first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and horizontally moving the first welding strip traction mechanism and the first side welding table towards the middle welding table, and drawing and laying the disassembled end welding strip of the first disassembled battery string onto the middle welding table; controlling a battery piece feeding mechanism to feed replacement battery pieces and stacking the replacement battery pieces onto a disassembly end welding strip of the first disassembly battery string; and controlling a second welding strip traction mechanism to pull the second disassembled end welding strip of the disassembled battery string, and horizontally moving the second disassembled end welding strip together with the second side welding table towards the middle welding table, and pulling and laying the second disassembled end welding strip of the disassembled battery string onto a replacement battery piece.
Aiming at the replacement battery piece of which the upper surface and the lower surface are required to be welded with the welding strips, the first welding strip traction mechanism, the second welding strip traction mechanism and the battery piece feeding mechanism are controlled to cooperate to realize that the disassembly end welding strips of the first disassembled battery string and the disassembly end welding strips of the second disassembled battery string are pulled and stacked to the corresponding positions of the upper surface and the lower surface of the replacement battery piece.
In some embodiments, the battery plates in the battery string to be repaired are IBC battery plates, the battery plate feeding mechanism is controlled to feed the replacement battery plates onto the welding platform, and the solder strip pulling mechanism is controlled to pull and stack the solder strips at the disassembling end of the first disassembled battery string and the solder strips at the disassembling end of the second disassembled battery string to the corresponding positions of the replacement battery plates, respectively, including: controlling a battery piece feeding mechanism to feed replacement battery pieces onto the middle welding table; controlling a first welding strip traction mechanism to pull the dismantling end welding strip of the first dismantling battery string, and translating the dismantling end welding strip and the first side welding table towards a middle welding table, and drawing and laying the dismantling end welding strip of the first dismantling battery string onto a replacement battery piece; and controlling a second welding strip traction mechanism to pull the disassembling end welding strip of the second disassembled battery string, and translating the second welding strip and the second side welding table towards the middle welding table, and pulling and laying the disassembling end welding strip of the second disassembled battery string onto the replacement battery piece.
Aiming at a replacement battery piece, namely an IBC battery piece, of which the welding strip only needs to be welded on the back surface, the first welding strip traction mechanism, the second welding strip traction mechanism and the battery piece feeding mechanism are controlled to cooperatively act, so that the welding strip at the disassembling end of the first disassembled battery string and the welding strip at the disassembling end of the second disassembled battery string are pulled and stacked to the corresponding position of the upper surface of the replacement battery piece (namely the back surface of the IBC battery piece).
In some embodiments, after obtaining the first disassembled battery string and the second disassembled battery string, the battery string rework method further comprises: controlling a tin supplementing mechanism positioned on the side of the desoldering platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or, prior to loading replacement battery pieces onto the soldering station, the battery string repair method further comprises: and controlling a tin supplementing mechanism positioned at the side of the battery piece feeding mechanism to supplement tin for the pad point of the replaced battery piece.
Tin supplementing operation is carried out to disassembling end welding strips and/or replacing battery pieces through controlling a tin supplementing mechanism, the welding of disassembling end welding strips and replacing battery pieces is facilitated, and the repair welding quality is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a battery string repairing apparatus according to an embodiment of the present invention in a first view;
fig. 2 is a schematic structural diagram of a battery string repairing apparatus according to an embodiment of the present invention in a second view;
fig. 3 is a schematic structural diagram of a battery string repair device provided in an embodiment of the present invention at a third viewing angle;
fig. 4 is a flowchart of a battery string repair method according to a first embodiment of the present invention;
fig. 5 is a flowchart of a battery string repairing method according to a second embodiment of the present invention;
fig. 6 is a flowchart of a battery string repairing method according to a third embodiment of the present invention;
fig. 7 is a flowchart of a battery string repairing method according to a fourth embodiment of the present invention;
wherein the reference numbers are as follows:
the desoldering platform 10: the middle desoldering table 11, the first side desoldering table 12, the second side desoldering table 13, the first side desoldering adsorption plate 121, and the second side desoldering adsorption plate 131;
the welding platform 20: a middle welding table 21, a first side welding table 22, a second side welding table 23, a first side welding adsorption plate 221 and a second side welding adsorption plate 231;
the solder strip pulling mechanism 30: a first solder strip pulling mechanism 31 and a second solder strip pulling mechanism 32;
heating welding mechanism 40: a first heating welding mechanism 41, a second heating welding mechanism 42;
cell sheet feeding mechanism 50: a first grasping mechanism 51, a regularizing mechanism 52, and a second grasping mechanism 53;
a flux applying mechanism 60;
and a tin supplement mechanism 70.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
According to the traditional chip replacement repair mode, the defect battery chip and the welding strip on the defect battery chip are welded together manually by using electric soldering iron, and then the replacement battery chip and the welding strip welded together are welded together again by using the electric soldering iron. The traditional replacement repair mode has low repair efficiency and unstable repair quality, and influences productivity.
In view of this, the invention provides a battery string repairing device and a repairing method, which can automatically disassemble the defective battery pieces in the battery string to be repaired, and automatically weld the replacement battery pieces to the positions left after the defective battery pieces are disassembled, so that the repairing efficiency of the battery string is greatly improved, and the repairing quality is ensured.
As shown in fig. 1 to 3, the device for repairing a battery string in an embodiment of the present invention includes an unsoldering platform 10, a welding platform 20, a battery string transferring mechanism, a solder ribbon drawing mechanism 30, a heating welding mechanism 40, and a battery sheet feeding mechanism 50, wherein:
the desoldering platform 10 is used for bearing the battery string to be repaired, and is matched with the heating welding mechanism 40 to desolder and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece, so as to obtain a first disassembled battery string and a second disassembled battery string.
The battery string transfer mechanism is used for transferring the first disassembled battery string and the second disassembled battery string to the welding platform 20.
The cell feeding mechanism 50 is used to feed replacement cells onto the welding platform 20.
The ribbon-welding traction mechanism 30 draws and stacks the disassembled end ribbon of the first disassembled battery string and the disassembled end ribbon of the second disassembled battery string to the corresponding positions of the replaced battery pieces.
The heating welding mechanism 40 is also used for welding the stacked disassembled end welding strips to the corresponding replacement battery pieces to obtain the repaired battery string.
By adopting the battery string repairing device in the embodiment of the invention, the repairing process of the battery string to be repaired is implemented as follows:
and feeding the battery string to be repaired onto the desoldering platform 10.
And controlling the desoldering platform 10 and the heating welding mechanism 40 to desolder and separate the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string.
And controlling the battery string transferring mechanism to feed the first disassembled battery string and the second disassembled battery string onto the welding platform 20.
The cell feeding mechanism 50 is controlled to feed the replacement cell onto the welding platform 20.
And controlling the solder strip traction mechanism 30 to respectively pull and stack the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to the corresponding positions of the replaced battery pieces.
And controlling the heating welding mechanism 40 to weld the overlapped disassembled end welding strips to the corresponding replacement battery pieces to obtain the repaired battery string.
It can be seen that through the cooperation of the desoldering platform 10, the welding platform 20, the battery string transferring mechanism, the welding strip traction mechanism 30, the heating welding mechanism 40 and the battery piece feeding mechanism 50, the battery string repairing device of the present invention realizes the automatic disassembly of the defective battery pieces in the battery string to be repaired, and automatically welds the replacement battery pieces to the positions left after the defective battery pieces are disassembled. Compared with the traditional replacement repair mode, the repair method greatly improves the repair efficiency and can ensure the stability of the repair quality.
With continued reference to fig. 1-3, optionally, the desoldering platform 10 includes a first mounting base, a middle desoldering station 11, a first side desoldering station 12, and a second side desoldering station 13, wherein: the middle de-welding table 11 is fixedly installed on the first installation seat, and the middle de-welding table 11 is used for bearing defective battery pieces in the battery string to be repaired. The first side de-welding station 12 is slidably connected to the first mounting seat, the first side de-welding station 12 is used for bearing the battery piece located on the first side of the defective battery piece, and the first side de-welding station 12 is configured to be capable of translating towards or away from the middle de-welding station 11. A second side de-welding station 13 is slidably connected to the first mounting seat, the second side de-welding station 13 is used for bearing the battery piece on the second side of the defective battery piece, and the second side de-welding station 13 is configured to be capable of translating towards or away from the middle de-welding station 11.
The unwelding platform 10 is matched with the heating and welding mechanism 40, and the specific process of unwelding and separating the defective battery piece in the battery string to be repaired and the welding strip welded on the defective battery piece is as follows:
in an initial state, the middle desoldering table 11, the first side desoldering table 12 and the second side desoldering table 13 are closed and butted, that is, the middle desoldering table 11, the first side desoldering table 12 and the second side desoldering table 13 are butted to form a continuous horizontal bearing table top.
The battery string to be repaired is loaded onto the bearing table surface, the defective battery piece is located on the middle desoldering table 11, the battery piece located on the first side of the defective battery piece is located on the first side desoldering table 12, and the battery piece located on the second side of the defective battery piece is located on the second side desoldering table 13.
And (3) implementing desoldering and separation of the defective battery pieces:
and controlling the heating and welding mechanism 40 to heat the defective cell piece, so that the welding strip welded on the defective cell piece is welded with the defective cell piece in a desoldering way.
And controlling the first side desoldering table 12 to drive the battery piece located on the first side of the defective battery piece to be far away from the middle desoldering table 11 to translate, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and thus a first disassembled battery string is obtained.
And controlling the second side desoldering table 13 to drive the battery piece positioned on the second side of the defective battery piece to move away from the middle desoldering table 11, so that the welding strip welded on the adjacent battery piece on the second side of the defective battery piece is separated from the defective battery piece, and thus a second disassembled battery string is obtained.
It should be noted that the first side desoldering table 12 and the second side desoldering table 13 may be synchronously controlled to move away from the middle desoldering table 11, so as to synchronously obtain two disassembled battery strings. Or one of the two disassembled battery strings can be controlled to move away from the middle unsoldering table 11 first and then the other one of the two disassembled battery strings can be controlled to move away from the middle unsoldering table 11, so that the two disassembled battery strings are obtained successively.
Optionally, an adsorption hole is formed in the bearing surface of the middle desoldering table 11, and the bearing surface adsorbs the defective battery piece through the adsorption hole. The end part of the first side desoldering table 12 close to the middle desoldering table 11 is provided with a first side desoldering adsorption plate 121, and the first side desoldering adsorption plate 121 is used for bearing and adsorbing an adjacent battery piece on the first side of the defective battery piece. The end part of the second side desoldering table 13 close to the middle desoldering table 11 is provided with a second side desoldering adsorption plate 131, and the second side desoldering adsorption plate 131 is used for bearing and adsorbing an adjacent battery piece located at the second side of the defective battery piece. The first side desoldering suction plate 121 and the second side desoldering suction plate 131 may also adopt suction holes as suction structures.
The battery string to be repaired is placed on the desoldering platform 10, and after the position of the battery string to be repaired is adjusted, the middle desoldering table 11, the first side desoldering adsorption plate 121 and the second side desoldering adsorption plate 131 respectively adsorb the defective battery piece and the adjacent battery pieces located on the first side and the second side of the defective battery piece, so that when the first side desoldering table 12 and the second side desoldering table 13 are far away from the middle desoldering table 11 to move, the defective battery piece can be stably kept on the middle desoldering table 11, smooth dismantling of the defective battery piece is implemented, and meanwhile, in the dismantling process, the adjacent battery pieces located on the first side and the second side of the defective battery piece cannot move to influence subsequent welding precision.
Optionally, a first heating assembly is further disposed in the intermediate desoldering station 11. In the disassembling process, the heating assembly can be matched with the heating welding mechanism 40 to heat the defective battery piece borne on the middle disassembling platform 11, so that the disassembling efficiency of the defective battery piece is improved.
Optionally, the middle desoldering table 11, the first side desoldering adsorption plate 121, and the second side desoldering adsorption plate 131 are all provided with solder strip limiting grooves. After the repaired battery string is placed on the desoldering platform 10 and the position of the battery string to be repaired is adjusted, the welding strips positioned on the lower surfaces of the defective battery piece and the adjacent battery pieces on the two sides of the defective battery piece are limited in the corresponding welding strip limiting grooves, on one hand, because the welding strips on the lower surface of the defective battery piece are positioned in the welding strip limiting grooves, the defective battery piece can be prevented from being taken away due to the pulling of the welding strips in the separation process; on the other hand, because the welding strips adjacent to the lower surfaces of the battery pieces on the two sides of the defective battery piece are also positioned in the welding strip limiting grooves, the welding strips can be prevented from being dislocated in the disassembling process.
With continued reference to fig. 1-3, optionally, the welding platform 20 includes a second mounting base, a middle welding stage 21, a first side welding stage 22, and a second side welding stage 23, wherein: the middle welding table 21 is fixedly arranged on the second mounting seat, and the middle welding table 21 is used for bearing the replacement battery piece. The first side welding table 22 is movably mounted on the second mounting seat and located on a first side of the middle welding table 21, the first side welding table 22 is used for bearing the first disassembled battery string, and the first side welding table 22 can move horizontally towards or away from the middle welding table and can move vertically. A second side welding station 23 is movably mounted on the second mounting base and located on a second side of the middle welding station 21, the second side welding station 23 is used for carrying a second disassembled battery string, and the second side welding station 23 is configured to be capable of translating towards or away from the middle welding station 21 and configured to be capable of ascending and descending in a vertical direction.
Optionally, the solder ribbon traction mechanism 30 includes a first solder ribbon traction mechanism 31 and a second solder ribbon traction mechanism 32, where the first solder ribbon traction mechanism 31 is configured to stack the solder ribbon at the disassembled end of the first disassembled battery string to a corresponding position of the replacement battery piece, and the second solder ribbon traction mechanism 32 is configured to pull the solder ribbon at the disassembled end of the second disassembled battery string to a corresponding position of the replacement battery piece.
As known to those skilled in the art, the battery cells mainly include two types, one type is a double-sided welding type battery cell in which welding strips need to be welded on both the front and back sides, and the other type is a battery cell in which welding strips need to be welded only on the back side, i.e., an inter-junction (IBC) battery cell. Wherein:
for the battery string to be repaired formed by welding the double-sided welding type battery pieces, the welding strip traction mechanism 30, the battery piece feeding mechanism 50 and the welding platform 20 complete the stack of the welding strip at the disassembling end of the first disassembled battery string, the welding strip at the disassembling end of the second disassembled battery string and the replaced battery pieces according to the following processes:
in the initial state, the first side bonding stage 22 and the second side bonding stage 23 are both away from the middle bonding stage 21. The first string of disassembled batteries bears on the first side welding table 22, the first string of disassembled batteries end welding strip extends outwards from the first side welding table 22, the second string of disassembled batteries bears on the second side welding table 23, and the second string of disassembled batteries end welding strip extends outwards from the second side welding table 23.
Before the stacking operation is performed, after the first side welding table 22 and the second side welding table 23 are controlled to ascend to the high positions, the first welding strip traction mechanism 31 and the second welding strip traction mechanism 32 are controlled to pull the dismantling end welding strips of the first dismantling battery string and the dismantling end welding strips of the second dismantling battery string.
Of course, the first side welding stage 22 and the second side welding stage 23 may be controlled to be raised to the high position after the first welding strip pulling mechanism 31 and the second welding strip pulling mechanism 32 are controlled to pull the first disassembled end welding strip of the first disassembled battery string and the second disassembled end welding strip of the second disassembled battery string.
By controlling the first side welding table 22 and the second side welding table 23 to ascend to a high position and then performing stacking operation, the traction movement of the disassembled end welding strip on the high position is realized, and the interference with the middle welding table or the replaced battery plate in the traction process can be avoided.
And (3) performing stacking operation:
the first welding strip traction mechanism 31 and the first side welding table 22 are controlled to move horizontally towards the middle welding table 21, and in the traction process, the welding strips at the disassembling end of the first disassembled battery string are kept to be pulled in a horizontal state until the welding strips at the disassembling end of the first disassembled battery string reach the upper side of the middle welding table 21. And controlling the first side welding table 22 and the first welding strip traction mechanism 31 to descend so that the welding strips at the dismantling end of the first dismantled battery string are laid on the middle welding table 21.
Then, the cell feeding mechanism 50 is controlled to feed and stack the replacement cell onto the first disassembled end bonding tape of the first disassembled cell string.
And finally, controlling a second welding strip traction mechanism 32 to pull the disassembly end welding strip of the second disassembled battery string and translate the disassembly end welding strip and the second side welding table 23 towards the middle welding table 21, and similarly, keeping the disassembly end welding strip of the second disassembled battery string to be in a horizontal state and traction the disassembly end welding strip until the disassembly end welding strip of the second disassembled battery string reaches the upper part of the replaced battery piece, and controlling the second side welding table 23 and the second welding strip traction mechanism 32 to descend so that the disassembly end welding strip of the second disassembled battery string is laid on the replaced battery piece.
It should be noted that, in the stacking process, if the surface of the replacement battery piece has the main grid line, it is required to ensure that the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string are respectively stacked on the main grid line on the corresponding surface. If the surface of the replacement battery piece does not have the main grid lines, it is required to ensure that the dismantling end welding strips of the first dismantled battery string and the dismantling end welding strips of the second dismantled battery string are respectively stacked at the preset welding positions on the corresponding surfaces.
For a battery string to be repaired formed by welding back-to-back (IBC) battery pieces, when the battery string to be repaired is fed onto the welding platform 20, the back of the battery string to be repaired faces upwards; the welding strip traction mechanism 30, the battery piece feeding mechanism 50 and the welding platform 20 complete the stack of the disassembled end welding strip of the first disassembled battery string, the disassembled end welding strip of the second disassembled battery string and the replaced battery piece according to the following processes:
similarly, in the initial state, the first side bonding stage 22 and the second side bonding stage 23 are both away from the middle bonding stage 21. The first string of disassembled batteries bears on the first side welding table 22, the first string of disassembled batteries end welding strip extends outwards from the first side welding table 22, the second string of disassembled batteries bears on the second side welding table 23, and the second string of disassembled batteries end welding strip extends outwards from the second side welding table 23.
Before the stacking operation is performed, after the first side welding table 22 and the second side welding table 23 are controlled to ascend to the high positions, the first welding strip traction mechanism 31 and the second welding strip traction mechanism 32 are controlled to pull the dismantling end welding strips of the first dismantling battery string and the dismantling end welding strips of the second dismantling battery string.
Of course, the first side welding table 22 and the second side welding table 23 may be controlled to be raised to the high position after the first welding strip pulling mechanism 31 and the second welding strip pulling mechanism 32 are controlled to pull the first disassembled end welding strip of the battery string and the second disassembled end welding strip of the battery string.
And (3) performing stacking operation:
the cell feeding mechanism 50 is controlled to feed the replacement cell onto the intermediate soldering station 21 while ensuring that the back side of the replacement cell faces upward.
Then, the first welding strip traction mechanism 31 and the first side welding table 22 are controlled to move horizontally towards the middle welding table 21, and in the traction process, the welding strips at the dismantling end of the first dismantled battery string are kept to be pulled in a horizontal state until the welding strips at the dismantling end of the first dismantled battery string reach the upper part of the replaced battery piece. And controlling the first side welding table 22 and the first welding strip traction mechanism 31 to descend, so that the welding strips at the disassembling end of the first disassembled battery string are laid on the replacement battery piece.
And finally, controlling the second welding strip traction mechanism 32 and the second side welding table 22 to move horizontally towards the middle welding table 21, and similarly, in the traction process, keeping the disassembling end welding strip of the second disassembled battery string to be in a horizontal state to be pulled until the disassembling end welding strip of the second disassembled battery string reaches the upper part of the replaced battery piece, and controlling the second side welding table 22 and the second welding strip traction mechanism 32 to descend so that the disassembling end welding strip of the second disassembled battery string is laid on the replaced battery piece.
Similarly, in the stacking process, if the back surface of the replaced battery piece is provided with the main grid line, the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string need to be respectively stacked on the positive main grid line and the negative main grid line. If the back of the replacement battery piece does not have the main grid line, the dismantling end welding strips of the first dismantling battery string and the dismantling end welding strips of the second dismantling battery string are required to be respectively overlapped at the preset welding positions.
Optionally, a second adsorption hole is formed in the bearing surface of the middle welding table 21, and the bearing surface of the middle welding table 21 is adsorbed through the second adsorption hole to replace the battery piece. The end of the first side welding table 22 close to the middle welding table 21 is provided with a first side welding adsorption plate 221, and the first side welding adsorption plate 221 is used for bearing and adsorbing the disassembled end cell pieces of the first disassembled cell string. The end of the second side welding table 23 close to the middle welding table 21 is provided with a second side welding adsorption plate 231, and the second side welding adsorption plate 231 is used for bearing and adsorbing the second end cell pieces to be disassembled of the battery string to be disassembled. The first side welding suction plate 221 and the second side welding suction plate 231 may also adopt suction holes as suction structures.
During stacking and welding, the middle welding table 21, the first side welding adsorption plate 221 and the second side welding adsorption plate 231 can respectively perform adsorption on the replaced battery piece, the disassembled end battery piece of the first disassembled battery piece and the disassembled end battery piece of the second disassembled battery piece, so that the welding strip traction mechanism 30 and the battery piece feeding mechanism 50 can smoothly stack the disassembled end welding strip of the first disassembled battery string, the disassembled end welding strip of the second disassembled battery string and the replaced battery piece.
Optionally, a second heating assembly is provided within the intermediate soldering station 21. In the welding process, the second heating assembly can cooperate with the heating welding mechanism 40 to heat the replacement battery piece carried on the middle welding table 21, so that the welding efficiency of the replacement battery piece is improved.
Optionally, the battery string repairing device in the embodiment of the present invention further includes a vision device, which is disposed above the intermediate welding table 21 and is used for determining the position of the battery piece to be replaced. The ribbon-welding drawing mechanism 30 draws and stacks the ribbon-welding at the disassembled end of the first disassembled battery string and the ribbon-welding at the disassembled end of the second disassembled battery string to the corresponding positions of the replaced battery pieces according to the positions of the replaced battery pieces.
With continued reference to fig. 1-3, heating welding mechanism 40 may, optionally, include a first heating welding mechanism 41 and a second heating welding mechanism 42, wherein,
a first heating welding mechanism 41 is provided at the desoldering station 10, and the first heating welding mechanism 41 is used for heating the defective battery piece to desolder the defective battery piece from the welding strip welded to the defective battery piece.
The second heating welding mechanism 42 is located at the welding platform 20, and the second heating welding mechanism 42 is used for heating the replacement battery piece so as to weld the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string to the corresponding positions of the replacement battery piece.
Because the desoldering platform 10 and the welding platform 20 are provided with independent heating and welding mechanisms, when the desoldering platform 10 performs the disassembling operation on one string of the battery strings to be repaired, the welding platform can synchronously weld the replacement battery piece to another string of the disassembled battery strings to be repaired, so that the repairing efficiency of the battery strings is further improved.
Alternatively, the first heating welding mechanism 41 and the second heating welding mechanism 42 are infrared lamp box mechanisms.
As shown in fig. 1, optionally, the battery string repairing device in the embodiment of the present invention further includes a flux applying mechanism 60, where the flux applying mechanism 60 is configured to apply flux to the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string before welding, so as to improve welding efficiency and welding quality.
The welding strip used in the battery string is usually a tin-coated copper strip, after the welding strip is separated from the defective battery piece by desoldering, tin originally coated on the welding strip at the dissembling end may remain on the defective battery piece, and when the battery piece is replaced to a brand-new battery piece, because no redundant tin is arranged on the welding point of the new battery piece, the welding between the welding strip at the dissembling end and the new battery piece is affected, and poor welding is caused.
When a new battery piece is selected as the replacement battery piece, in order to ensure that the welding strip at the disassembled end and the replacement battery piece can be welded well, as shown in fig. 1, optionally, the battery string repairing device in the embodiment of the present invention further includes a tin supplementing mechanism 70. The tin supplementing mechanism 70 may be disposed at a side of the desoldering platform 10, and the tin supplementing mechanism 70 is configured to perform tin supplementing on the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string. That is, after the defective cell is disassembled to obtain the first disassembled cell string and the second disassembled cell string, the tin supplement operation of the disassembled end welding strip of the first disassembled cell string and the disassembled end welding strip of the second disassembled cell string is performed by controlling the tin supplement mechanism 70.
And after finishing tin supplement operation on the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string, coating the scaling powder of the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string.
In addition to the tin supplement to the solder strip at the disassembled end, optionally, a tin supplement mechanism 70 may be disposed at the side of the cell feeding mechanism 50, and the tin supplement mechanism 70 is used to implement tin supplement to the pad point of the replaced cell. That is, before the replacement battery piece is loaded on the soldering stage 20, the tin supplement mechanism 70 is used to supplement tin to the pad point of the replacement battery piece.
Of course, the tin supplementing mechanism 60 may be provided on both the side of the desoldering table 10 and the side of the cell feeding mechanism 50, and tin supplementation may be performed on the detached end bonding tape of the first detached cell string and the detached end bonding tape of the second detached cell string, as well as on the pad point of the replacement cell, before welding.
In addition to ensuring good welding between the end welding strip for disassembly and the replacement battery piece by the way of arranging the tin supplementing mechanism, the battery piece with tin on the welding point can be selected as the replacement battery piece, for example, an undamaged battery piece disassembled from other good battery strings by means of unsoldering can be used as the replacement battery piece, and a part of tin can remain on the welding point of the unsoldered battery piece; the tin printing equipment can also be used for carrying out tin printing on the pad points of the new battery piece, and the battery piece after tin printing is used as a replacement battery piece.
Optionally, as shown in fig. 1 to 3, the cell sheet feeding mechanism 50 includes a first picking mechanism 51, a arranging mechanism 52 and a second picking mechanism 53, wherein: the first picking mechanism 51 is used for picking up the replacement cell from the battery box and conveying the picked replacement cell to the arranging mechanism 52. The regulating mechanism 52 is used for regulating the replacement cell pieces. The second picking mechanism 53 is used for picking the regulated replacement battery pieces from the regulating mechanism 53 and transporting the battery pieces to the welding platform 20.
The specific operation process of the cell feeding mechanism 50 is as follows:
first, the first picking mechanism 51 is controlled to pick up a replacement cell from the battery box, and the picked replacement cell is transported to the regulating mechanism 52 to be regulated.
Then, the second picking mechanism 53 is controlled to transport the structured replacement cell from the arranging mechanism 52 to the welding platform 20.
As known to those skilled in the art, during the welding process, the welding tool generally needs to be pressed onto the stacked battery plates and the welding strips, so as to ensure the welding effect and prevent the cold joint.
Optionally, the device for repairing the battery string in the embodiment of the present invention further includes a welding tool pick-and-place mechanism, where the welding tool pick-and-place mechanism is configured to press the welding tool onto the replacement battery piece after the welding strip at the disassembly end of the first disassembled battery string, the welding strip at the disassembly end of the second disassembled battery string, and the replacement battery piece are stacked.
After the heat welding mechanism 40 completes the welding operation, the welding tool pick-and-place mechanism removes the welding tool from the replacement battery piece.
Fig. 4 is a flowchart of a battery string repairing method according to an embodiment of the present invention, where the battery string repairing method according to the present invention can be implemented by the battery string repairing apparatus and a control program thereof in the foregoing embodiment, and the processing method may include the following steps:
and 100, feeding the battery string to be repaired to an unsoldering platform.
And 200, controlling the desoldering platform and the heating welding mechanism to desolder and separate the defective battery piece in the battery string to be repaired from the welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string.
As described in the previous embodiments, the desoldering platform may comprise a first mount, a middle desoldering station, a first side desoldering station, and a second side desoldering station, wherein: the first side de-welding station and the second side de-welding station can translate towards or away from the middle de-welding station. With the desoldering platform of this configuration, as shown in fig. 5, step 200 may optionally include the following sub-steps:
step 201: and controlling the heating and welding mechanism to heat the defective battery piece, so that the welding strip welded on the defective battery piece is welded with the defective battery piece in a desoldering way.
Step 202: controlling the first side desoldering table to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle desoldering table in a horizontal moving mode, so that the welding strip welded on the adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and a first disassembled battery string is obtained; and controlling the second side desoldering table to drive the battery piece positioned on the second side of the defective battery piece to move away from the middle desoldering table, so that the welding strip welded on the adjacent battery piece on the second side of the defective battery piece is separated from the defective battery piece, and thus a second disassembled battery string is obtained.
In step 202, the first side desoldering table and the second side desoldering table can be synchronously controlled to move away from the middle bearing table, and two disassembled battery strings are synchronously obtained. Or one of the two disassembled battery strings is controlled to move away from the middle bearing table, and then the other one of the two disassembled battery strings is controlled to move away from the middle bearing table, so that the two disassembled battery strings are obtained sequentially.
And 300, controlling the battery string transferring mechanism to feed the first disassembled battery string and the second disassembled battery string onto the welding platform.
And 400, controlling a battery piece feeding mechanism to feed replacement battery pieces onto a welding platform, and controlling a welding strip traction mechanism to respectively pull and stack the disassembly end welding strips of the first disassembled battery string and the disassembly end welding strips of the second disassembled battery string to corresponding positions of the replacement battery pieces.
As described above, the battery cells mainly include two types, which are distinguished by the welding surfaces of the welding strips, wherein one type is a double-side welding type battery cell in which the welding strips are required to be welded on both the front and back surfaces, and the other type is a battery cell in which the welding strips are required to be welded only on the back surface, i.e., an IBC (IBC) battery cell. Wherein:
for a battery string to be repaired formed by welding double-sided welded battery pieces, as shown in fig. 6, step 400 may include the following sub-steps:
step 401, controlling the first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the end welding strip and the first side welding table towards the middle welding table, and pulling and laying the disassembled end welding strip of the first disassembled battery string onto the middle welding table.
Optionally, before the traction is implemented, the first side welding table is controlled to ascend to a high position, and of course, after the first welding strip traction mechanism is controlled to pull the welding strip at the disassembling end of the first disassembled battery string, the first side welding table may be controlled to ascend to the high position.
After the first side welding table translated to the position towards the middle welding table, the first side welding table is lowered to the low position, so that the first disassembled end welding strip for disassembling the battery string is paved on the middle welding table.
And step 402, controlling a battery piece feeding mechanism to feed replacement battery pieces and stacking the replacement battery pieces onto a disassembling end welding strip of the first disassembling battery string.
And 403, controlling a second welding strip traction mechanism to pull the disassembled end welding strip of the second disassembled battery string, and horizontally moving the second welding strip traction mechanism and the second side welding table towards the middle welding table, and pulling and laying the disassembled end welding strip of the second disassembled battery string onto the replacement battery piece.
Optionally, before the traction is implemented, the second side welding table is controlled to ascend to a high position, and of course, after the second welding strip traction mechanism is controlled to pull the welding strip at the disassembling end of the second disassembling battery string, the second side welding table may also be controlled to ascend to the high position.
After the second side welding table is translated to the position in place towards the middle welding table, the second side welding table is lowered to the low position, and therefore the second dismantling end welding strip of the second dismantling battery string is laid on the replacement battery piece.
For a string of cells to be repaired formed by back-to-back (IBC) cell tab welding, as shown in fig. 7, step 400 may include the following sub-steps:
step 401', controlling the cell feeding mechanism to feed the replacement cell to the intermediate welding table.
Step 402', controlling a first welding strip traction mechanism to pull the dismantling end welding strip of the first dismantling battery string, and translating the dismantling end welding strip of the first dismantling battery string together with the first side welding table towards the middle welding table, and drawing and laying the dismantling end welding strip of the first dismantling battery string onto a replacement battery piece.
Optionally, before the traction is implemented, the first side welding table is controlled to be raised to the high position, and of course, after the first welding strip traction mechanism is controlled to pull the welding strip at the disassembling end of the first disassembled battery string, the first side welding table may also be controlled to be raised to the high position.
After the first side welding table is translated to the position in the middle of the middle welding table, the first side welding table is lowered to the low position, and therefore the first dismantling end welding strip for dismantling the battery string is laid on the replacement battery piece.
And 403', controlling a second welding strip traction mechanism to pull the disassembled end welding strips of the second disassembled battery string, and horizontally moving the second welding strip traction mechanism and the second side welding table towards the middle welding table, so as to pull and lay the disassembled end welding strips of the second disassembled battery string onto the replacement battery piece.
Optionally, before the traction is implemented, the second side welding table is controlled to ascend to a high position, and of course, after the second welding strip traction mechanism is controlled to pull the welding strip at the disassembling end of the second disassembling battery string, the second side welding table may also be controlled to ascend to the high position.
After the second side welding table is translated to the position in place towards the middle welding table, the second side welding table is lowered to the low position, and therefore the second dismantling end welding strip of the second dismantling battery string is laid on the replacement battery piece.
As described above, in some optional embodiments, the string repair device further includes a tin repair mechanism, wherein the tin repair mechanism may be disposed at the side of the desoldering platform and may be disposed at the side of the cell feeding mechanism. Tin supplementing mechanisms can be arranged on the side of the desoldering platform and the side of the battery piece feeding mechanism respectively.
When the tin supplementing mechanism is arranged on the side of the desoldering platform, the method for repairing the battery string further comprises the following steps:
and controlling a tin supplementing mechanism positioned on the side of the desoldering platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string.
When the tin supplementing mechanism is arranged only on the side of the cell feeding mechanism, the method for repairing the cell string provided by the invention can further comprise the following steps:
before the replacement battery piece is loaded on the welding platform, the tin supplementing mechanism located on the side of the battery piece feeding mechanism is controlled to supplement tin for the pad point of the replacement battery piece.
When the tin supplementing mechanisms are respectively arranged on the side of the desoldering platform and the side of the battery piece feeding mechanism, the battery string repairing method provided by the invention can further comprise the following steps of:
and controlling a tin supplementing mechanism positioned on the side of the desoldering platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string.
Before the replacement battery piece is loaded on the welding platform, the tin supplementing mechanism located on the side of the battery piece feeding mechanism is controlled to supplement tin for the pad point of the replacement battery piece.
The invention has been described above with a certain degree of particularity. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that come within the true spirit and scope of the invention are desired to be protected. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.

Claims (18)

1. The utility model provides a device is reprocessed to battery cluster, its characterized in that, device is reprocessed to battery cluster is including separating welding platform, welded platform, battery cluster move and carry mechanism, weld and take drive mechanism, heat welding mechanism and battery piece feed mechanism, wherein:
the desoldering platform is used for bearing a battery string to be repaired, and is matched with the heating welding mechanism to desolder and separate a defective battery piece in the battery string to be repaired and a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
the battery string transferring mechanism is used for transferring the first disassembled battery string and the second disassembled battery string to the welding platform;
the battery piece feeding mechanism is used for feeding replacement battery pieces onto the welding platform;
the welding strip traction mechanism is used for dragging and stacking the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string to corresponding positions of the replaced battery pieces;
and the heating welding mechanism is also used for welding the stacked disassembled end welding strips to the corresponding replaced battery pieces to obtain the repaired battery string.
2. The battery string repair device of claim 1, wherein the desoldering platform comprises a first mounting base, a middle desoldering table, a first side desoldering table, and a second side desoldering table, wherein:
the middle unsoldering table is fixedly installed on the first installation seat and used for bearing the defective battery pieces in the battery string to be repaired;
the first side desoldering table is slidably connected to the first mounting seat and used for bearing a battery piece on a first side of the defective battery piece, and the first side desoldering table is configured to be capable of translating towards or away from the middle desoldering table;
the second side unsoldering station is slidably connected to the first mounting seat, and the second side unsoldering station is used for bearing the battery piece located at the second side of the defective battery piece, and the second side unsoldering station is configured to be capable of translating towards or away from the middle unsoldering station.
3. The string repair device according to claim 2, wherein:
a first adsorption hole for adsorbing the defective cell is formed in the bearing surface of the middle desoldering table, and a first heating assembly is arranged in the middle desoldering table;
a first side desoldering adsorption plate is arranged at the end part, close to the middle desoldering table, of the first side desoldering table and is used for bearing and adsorbing adjacent battery pieces on the first side of the defective battery piece;
the end part of the second side desoldering table, which is close to the middle desoldering table, is provided with a second side desoldering adsorption plate, and the second side desoldering adsorption plate is used for bearing and adsorbing adjacent battery pieces on the second side of the defective battery piece.
4. The battery string repairing device according to claim 3, wherein a solder strip limiting groove is formed in each of the middle desoldering table, the first side desoldering adsorption plate and the second side desoldering adsorption plate.
5. The battery string repair device of claim 1, wherein the welding platform comprises a second mount, a middle weld station, a first side weld station, and a second side weld station, wherein:
the middle welding table is fixedly arranged on the second mounting seat and used for bearing the replaceable battery piece;
the first side welding table is movably mounted on the second mounting seat and located on a first side of the middle welding table, the first side welding table is used for bearing the first disassembled battery string, and the first side welding table is configured to be capable of translating towards or away from the middle welding table and capable of ascending and descending in the vertical direction;
the second side welding table is movably mounted on the second mounting seat and located on a second side of the middle welding table, the second side welding table is used for bearing the second disassembled battery string, and the second side welding table can move towards or away from the middle welding table in a translation mode and can ascend and descend in the vertical direction.
6. The string repair device according to claim 5, wherein:
a second adsorption hole for adsorbing the replacement battery piece is formed in the bearing surface of the middle welding table, and a second heating assembly is arranged in the middle welding table;
the end part of the first side welding table close to the middle welding table is provided with a first side welding adsorption plate, and the first side welding adsorption plate is used for bearing and adsorbing the disassembled end cell piece of the first disassembled cell string;
the second side welding table is close to the end of the middle welding table is provided with a second side welding adsorption plate, and the second side welding adsorption plate is used for bearing and adsorbing the second-disassembled end cell piece of the battery string.
7. The string repair device according to claim 5, wherein: weld and take drive mechanism to include that first welds and takes drive mechanism and second and weld and take drive mechanism, wherein:
welding strips are welded on the upper surface and the lower surface of the battery piece in the battery string to be repaired, and the first welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the first disassembled battery string onto the middle welding table; the battery piece feeding mechanism feeds the replacement battery pieces and stacks the replacement battery pieces onto the dismantling end welding strip of the first dismantling battery string; the second welding strip traction mechanism is used for drawing and laying the welding strip at the disassembly end of the second disassembled battery string onto the replacement battery piece;
or,
the battery plates in the battery string to be repaired are IBC battery plates, the battery plate feeding mechanism feeds the replacement battery plates onto the middle welding table, and the first welding strip traction mechanism is used for drawing and laying the welding strips at the disassembling end of the first disassembled battery string onto the replacement battery plates; and the second welding strip traction mechanism is used for drawing and laying the welding strip at the disassembling end of the second disassembled battery string onto the replacement battery piece.
8. The string repair device according to claim 5, wherein: the battery string repairing device further comprises a vision device, the vision device is arranged above the middle welding table and used for determining the position of the replaced battery piece, and the welding strip traction mechanism is used for respectively dragging and stacking the disassembling end welding strip of the first disassembled battery string and the disassembling end welding strip of the second disassembled battery string to the corresponding positions of the replaced battery piece according to the position of the replaced battery piece.
9. The string repair device according to claim 1, wherein:
the heating and welding mechanism comprises a first heating and welding mechanism and a second heating and welding mechanism, wherein the first heating and welding mechanism is arranged at the desoldering platform and is used for heating the defective battery piece so as to desolder the defective battery piece and a welding strip welded on the defective battery piece; and the second heating and welding mechanism is positioned at the welding platform and used for heating the replacement battery piece so as to weld the disassembly end welding strip of the first disassembled battery string and the disassembly end welding strip of the second disassembled battery string to the corresponding positions of the replacement battery piece.
10. The string repair device according to claim 1, wherein: the battery string repairing device further comprises a soldering flux coating mechanism, and the soldering flux coating mechanism is used for coating soldering flux on the disassembled end welding strip of the first disassembled battery string and the disassembled end welding strip of the second disassembled battery string before welding.
11. The string repair device according to claim 1, wherein: cell piece feed mechanism includes that first picking up mechanism, regular mechanism and second pick up the mechanism, wherein:
the first picking mechanism is used for picking up the replacement battery piece from the battery box and carrying the picked replacement battery piece to the arranging mechanism;
the regulating mechanism is used for regulating the replacement battery pieces;
the second picking mechanism is used for picking the regulated replacement battery pieces from the regulating mechanism and carrying the battery pieces to the welding platform.
12. The string repair device of claim 10, wherein: the battery string repairing device further comprises a tin supplementing mechanism;
the tin supplementing mechanism is arranged at the side of the desoldering platform and is used for supplementing tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or the presence of a gas in the gas,
and the tin supplementing mechanism is arranged on the side of the battery piece feeding mechanism and is used for implementing tin supplementing of the welding spot of the replacement battery piece.
13. The string repair device according to claim 1, wherein: the battery string repair device further comprises a welding tool picking and placing mechanism, wherein the welding tool picking and placing mechanism is used for laying the disassembly end welding belts on the upper surface of the replacement battery piece in the replacement battery piece, then pressing the welding tool to the disassembly end welding belts, and removing the welding tool after welding.
14. A battery string repairing method is characterized in that: the battery string repairing device according to claim 1, wherein the battery string repairing method comprises:
feeding the battery string to be repaired to an unsoldering platform;
controlling the unsoldering platform and the heating welding mechanism to unsolder and separate a defective battery piece in the battery string to be repaired from a welding strip welded on the defective battery piece to obtain a first disassembled battery string and a second disassembled battery string;
controlling the battery string transferring mechanism to feed the first disassembled battery string and the second disassembled battery string onto a welding platform;
controlling the battery piece feeding mechanism to feed replacement battery pieces onto the welding platform; controlling the solder strip traction mechanism to respectively pull and stack the disassembled end solder strips of the first disassembled battery string and the disassembled end solder strips of the second disassembled battery string to corresponding positions of the replaced battery pieces;
and controlling the heating welding mechanism to weld the stacked disassembled end welding strips to the corresponding replacement battery piece.
15. The battery string repairing method according to claim 14, wherein the controlling the desoldering table and the heating welding mechanism to desolder and separate the defective battery piece in the battery string to be repaired from the welding ribbon welded to the defective battery piece using the battery string repairing apparatus according to claim 2 comprises:
controlling the heating and welding mechanism to heat the defective battery piece, so that the welding strip welded on the defective battery piece is welded with the defective battery piece in a desoldering mode;
controlling the first side desoldering table to drive the battery piece positioned on the first side of the defective battery piece to move away from the middle desoldering table in a horizontal moving mode, so that a welding strip welded on an adjacent battery piece on the first side of the defective battery piece is separated from the defective battery piece, and the first disassembled battery string is obtained; and controlling the second side desoldering table to drive the battery piece positioned on the second side of the defective battery piece to be far away from the middle desoldering table to translate, so that the welding strip welded on the adjacent battery piece on the second side of the defective battery piece is separated from the defective battery piece, and thus the second disassembled battery string is obtained.
16. The method for repairing a battery string according to claim 14, wherein the method for repairing a battery string according to claim 7 is adopted, welding tapes are welded to both the upper surface and the lower surface of the battery piece in the battery string to be repaired, the battery piece feeding mechanism is controlled to feed a replacement battery piece onto the welding platform, and the welding tape traction mechanism is controlled to respectively pull and stack the disassembled end welding tapes of the first disassembled battery string and the disassembled end welding tapes of the second disassembled battery string to corresponding positions of the replacement battery piece, and comprises the steps of:
controlling the first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the first welding strip traction mechanism and the first side welding table towards the middle welding table, and drawing and laying the disassembled end welding strip of the first disassembled battery string onto the middle welding table;
controlling the battery piece feeding mechanism to feed the replacement battery pieces and stacking the replacement battery pieces onto a disassembling end welding strip of the first disassembling battery string;
and controlling the second welding strip traction mechanism to pull the second disassembled end welding strip of the disassembled battery string, and moving towards the middle welding table together with the second side welding table in a translation manner, so that the second disassembled end welding strip of the disassembled battery string is pulled and spread onto the replaced battery piece.
17. The method according to claim 14, wherein the battery string repair apparatus according to claim 7 is adopted, the battery pieces in the battery string to be repaired are IBC battery pieces, the battery piece feeding mechanism is controlled to feed replacement battery pieces onto the welding platform, and the solder ribbon drawing mechanism is controlled to draw and stack the disassembled end solder ribbons of the first disassembled battery string and the disassembled end solder ribbons of the second disassembled battery string to corresponding positions of the replacement battery pieces, respectively, and includes:
controlling the battery piece feeding mechanism to feed the replacement battery pieces onto the middle welding table;
controlling the first welding strip traction mechanism to pull the disassembled end welding strip of the first disassembled battery string, and translating the first welding strip traction mechanism and the first side welding table towards the middle welding table, and drawing and laying the disassembled end welding strip of the first disassembled battery string onto the replacement battery piece;
and controlling the second welding strip traction mechanism to pull the disassembled end welding strip of the second disassembled battery string, and translating the second welding strip together with the second side welding table towards the middle welding table, and pulling and laying the disassembled end welding strip of the second disassembled battery string onto the replacement battery piece.
18. The string repair method according to claim 14, wherein, with the string repair apparatus according to claim 12, after obtaining the first disassembled string and the second disassembled string, the string repair method further comprises:
controlling the tin supplementing mechanism positioned on the side of the desoldering platform to supplement tin to the dismantling end welding strip of the first dismantling battery string and the dismantling end welding strip of the second dismantling battery string; and/or the presence of a gas in the atmosphere,
prior to loading replacement battery pieces onto the welding platform, the battery string rework method further comprises:
and controlling the tin supplementing mechanism positioned at the side of the battery piece feeding mechanism to supplement tin for the pad points of the replaced battery pieces.
CN202210405116.8A 2022-04-18 2022-04-18 Battery string repair device and repair method Active CN114744078B (en)

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