CN114871764A - Battery string welding equipment and welding method - Google Patents

Battery string welding equipment and welding method Download PDF

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Publication number
CN114871764A
CN114871764A CN202210509687.6A CN202210509687A CN114871764A CN 114871764 A CN114871764 A CN 114871764A CN 202210509687 A CN202210509687 A CN 202210509687A CN 114871764 A CN114871764 A CN 114871764A
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China
Prior art keywords
welding
strip
welding strip
solder
strips
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CN202210509687.6A
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Chinese (zh)
Inventor
徐青
赵业同
陈磊
夏军
张伯文
李忠亮
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Wuxi Autowell Technology Co Ltd
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Wuxi Autowell Technology Co Ltd
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Priority to CN202210509687.6A priority Critical patent/CN114871764A/en
Publication of CN114871764A publication Critical patent/CN114871764A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps
    • B23K37/0443—Jigs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1876—Particular processes or apparatus for batch treatment of the devices
    • H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
    • 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)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention provides a battery string welding device, which comprises a welding conveying mechanism, a battery piece laying mechanism, a welding strip traction mechanism, a welding strip processing mechanism, a welding strip laying mechanism and a welding mechanism, wherein the welding conveying mechanism comprises a conveying mechanism body, a battery piece laying mechanism body, a welding strip traction mechanism body, a welding strip processing mechanism body and a welding mechanism body, and the welding conveying mechanism body comprises a welding conveying mechanism body, a welding strip laying mechanism body and a welding mechanism body, wherein the welding conveying mechanism body comprises a conveying mechanism body, a battery piece laying mechanism body, a welding strip traction mechanism body and a welding mechanism body, and the welding conveying mechanism body comprises a welding conveying mechanism body and a welding strip conveying mechanism body, wherein the welding conveying mechanism body comprises a conveying mechanism body, a battery piece laying mechanism body, a welding strip traction mechanism body, a welding strip processing mechanism body, a welding strip laying mechanism body and a welding mechanism body, wherein the welding strip laying mechanism body is arranged in a mode: the battery piece laying mechanism lays the battery pieces on the welding conveying mechanism; the welding strip traction mechanism is used for drawing the welding strip to the welding strip processing mechanism; the welding strip processing mechanism staggers all the odd welding strips and all the even welding strips, and cuts off all the odd welding strips and all the even welding strips alternately to obtain a first welding strip group and a second welding strip group, and the welding strip processing mechanism also adjusts the space between the first welding strip groups and the space between the second welding strip groups to be a second preset space; the welding strip laying mechanism is used for stacking the first welding strip group and the second welding strip group on the welding strip processing mechanism onto the laid battery pieces; and the welding mechanism welds the stacked welding strip group and the battery plate into a string. The battery string welding equipment realizes welding string of back-to-back battery pieces.

Description

Battery string welding equipment and welding method
Technical Field
The invention relates to the field of battery production, in particular to a battery string welding device and a welding method.
Background
The front surface of the back connection type (IBC) battery piece is not provided with the main grid lines, and the positive electrode row and the negative electrode row are arranged on the back surface of the battery piece, so that the shading of the battery piece is reduced, and the light conversion efficiency of the battery piece is improved.
As shown in fig. 1, the back-connected cell 200 has opposite polarity first electrodes (e.g. positive electrodes) and second electrodes (e.g. negative electrodes) on its back, the first electrodes are arranged in rows and form at least two rows 201 of first electrodes, the second electrodes are arranged in rows and form at least two rows 202 of second electrodes, and the rows 201 and 202 of first electrodes are arranged in a staggered manner.
As shown in fig. 2, the back-connected battery pieces are welded into a string in the following manner: the N (e.g., 4) cells 200 are laid in turn with their back sides facing upward, and the electrode rows of adjacent cells in the same line have opposite polarities. N +1 (five as in the figure) ribbon groups are used to weld N battery pieces 200 into a string, where: the first welding band group (1 st, 3 rd and 5 th welding band groups in the figure) and the second welding band group (2 nd and 4 th welding band groups in the figure) are alternately laid.
Traditional formula battery piece welding equipment of backing up lays in order to realize the dislocation to first welding band group, second welding band group, need set up two welding band material coil groups, and every welding band material coil group all includes a plurality of welding band material coils. And the welding strip traction mechanism is used for drawing and acquiring a first welding strip group and a second welding strip group from the two welding strip material coil groups in turn, and the first welding strip group and the second welding strip group are alternately laid on the battery piece.
Traditional back of body formula battery piece welding equipment, it welds the area treatment inefficiency, has finally influenced the production efficiency of battery cluster.
Disclosure of Invention
In order to solve the technical problem, the invention provides a battery string welding device which adopts the following technical scheme:
the utility model provides a battery cluster welding equipment for weld the battery piece into the cluster, the back of battery piece is equipped with first electrode row and the second electrode row of crisscross arrangement, and battery cluster welding equipment includes welding conveying mechanism, battery piece lays the mechanism, welds and takes drive mechanism, welds and takes processing mechanism, welds and takes the mechanism and welding mechanism to lay, wherein:
the welding conveying mechanism is at least used for bearing the battery piece and the welding strip group;
the battery piece laying mechanism is used for laying a plurality of battery pieces with first preset intervals on the welding conveying mechanism in an upward mode, and the electrode rows of adjacent battery pieces on the same straight line are opposite in polarity;
the welding strip traction mechanism is used for drawing a plurality of welding strips extending along the first horizontal direction to the welding strip processing mechanism;
the welding strip processing mechanism is used for staggering all the odd welding strips and all the even welding strips in a first horizontal direction by a preset distance and alternately cutting off all the odd welding strips and all the even welding strips to obtain a plurality of first welding strip groups and a plurality of second welding strip groups, and is also used for adjusting the distance between the first welding strip groups and the distance between the second welding strip groups to be a second preset distance;
the welding strip laying mechanism is used for stacking a plurality of first welding strip groups and a plurality of second welding strip groups on the welding strip processing mechanism onto a plurality of laid battery pieces, stacking each first welding strip group onto odd electrode rows of the corresponding battery piece, and stacking each second welding strip group onto even electrode rows of the corresponding battery piece;
the welding mechanism is used for welding the stacked welding strip group and the battery piece into a string.
The battery string welding equipment realizes welding string of back-to-back connected battery pieces by matching the welding conveying mechanism, the battery piece laying mechanism, the welding strip traction mechanism, the welding strip processing mechanism and the welding strip laying mechanism.
Particularly, through the processing of the welding strip processing mechanism, the invention realizes the simultaneous feeding of the first welding strip group and the second welding strip group, completes the dislocation processing of the first welding strip group and the second welding strip group, and adjusts the space between the first welding strip groups and the space between the second welding strip groups to preset values, namely, the welding strip processing mechanism completes the typesetting of the first welding strip group and the second welding strip group, so that the welding strip paving mechanism can completely lay all the first welding strip groups and the second welding strip groups on the battery piece at one time, thereby greatly improving the production efficiency.
In some embodiments, the solder strip processing mechanism includes a plurality of first solder strip clamping assemblies, a plurality of second solder strip clamping assemblies, a plurality of first solder strip cutters, and a plurality of second solder strip cutters arranged along a first direction, wherein:
the first welding strip clamping assemblies are matched with and clamp all odd welding strips, a first welding strip cutter is arranged between every two adjacent first welding strip clamping assemblies, and each first welding strip cutter is used for cutting off all odd welding strips at corresponding positions to obtain a plurality of first welding strip groups;
the second welding strip clamping assemblies are matched with and clamp all the second welding strips in an even number, a second welding strip cutter is arranged between every two adjacent second welding strip clamping assemblies, and each second welding strip cutter is used for cutting off all the second welding strips in the even number at corresponding positions to obtain a plurality of second welding strip groups;
before all the odd welding strips are cut off, the first welding strip clamping assemblies and/or the second welding strip clamping assemblies translate in the first horizontal direction, so that all the odd welding strips and all the even welding strips are staggered by a preset distance in the first horizontal direction;
after all the odd welding strips are cut off, each first welding strip clamping assembly respectively clamps one corresponding first welding strip group, and each first welding strip clamping assembly is further configured to be separated in the first horizontal direction so as to adjust the distance between the first welding strip groups to be a second preset distance;
after all the even number of solder strips are cut off, each second solder strip clamping assembly respectively clamps one corresponding second solder strip group, and each second solder strip clamping assembly is further configured to be separated in the first horizontal direction so as to adjust the distance between each second solder strip group to be a second preset distance.
Through the cooperation of first solder strip centre gripping subassembly, second solder strip centre gripping subassembly, first solder strip cutter and second solder strip cutter, solder strip processing mechanism has realized the dislocation treatment between first solder strip group and the second solder strip group to and all adjust the interval between each first solder strip group, the interval between each second solder strip group to the predetermined value.
In some embodiments, the solder strip processing mechanism further comprises a base and a staggered slide rail extending along the first horizontal direction, a first solder strip spacing slide rail and a second solder strip spacing slide rail, wherein: the staggered sliding rails are arranged on the base, the first welding strip group spacing sliding rails are connected to the staggered sliding rails in a sliding mode, and the plurality of first welding strip clamping assemblies are connected to the first welding strip group spacing sliding rails; the second welding strip group spacing slide rails are arranged on the base, and the plurality of second welding strip clamping assemblies are connected to the second welding strip group spacing slide rails; before all odd-numbered welding strips are cut off, the first welding strip group slides along the staggered slide rail from the slide rail, so that all odd-numbered welding strips and all even-numbered welding strips are staggered by a preset distance in the first horizontal direction; after all the odd welding strips are cut off, the first welding strip clamping assemblies slide along the first welding strip group distance slide rails to separate, so that the distance between every two first welding strip groups is adjusted to be a second preset distance; after all the even number welding strips are cut off, the plurality of second welding strip clamping assemblies slide along the second welding strip group distance slide rails to separate, so that the distance between every two second welding strip groups is adjusted to be a second preset distance.
Through set up the dislocation slide rail on the base, first weld and take component apart from slide rail and second to weld and take component apart from slide rail, and with all first welding take centre gripping subassemblies, all second weld take centre gripping subassemblies to arrange respectively on first welding take component apart from slide rail, second weld and take the component apart from slide rail, thereby realized that first welding takes centre gripping subassembly and second to weld the dislocation drive of taking between the centre gripping subassembly, and each first welding takes between the centre gripping subassembly, each second welds the drive of taking the part apart from between the centre gripping subassembly.
In some embodiments, the first and second weld tape cutters each comprise a first mounting bracket, a fixed cutter, a movable cutter, and a movable cutter drive mechanism, wherein: the fixed cutter is fixedly arranged on the first mounting bracket and extends along the second horizontal direction, and a fixed cutting edge is formed at the edge of the upper side of the fixed cutter; the movable cutter is arranged on the first mounting bracket in a sliding manner and is attached to the fixed cutter, a plurality of hook knives are arranged on the movable cutter side by side along a second horizontal direction, the hook knives extend upwards out of the upper side edge of the movable cutter, and movable cutting edges are formed at the lower side edge of the hook knives; the movable cutter driving mechanism is used for driving the movable cutter to slide relative to the fixed cutter so as to realize the position switching of the movable cutter between a high position and a low position; when the movable cutter slides to a high position, a gap for the welding strip to pass through is formed between the movable cutting edge of each hook cutter and the fixed cutting edge of the fixed cutter; when the movable cutter slides to a low position, the movable cutting edge of each hook cutter is matched with the fixed cutting edge of the fixed cutter to cut off the welding strip passing through the movable cutting edge and the fixed cutter.
Through setting up first solder strip cutter, second solder strip cutter, when first solder strip cutter cuts all odd number solder strips, can realize dodging of all even number solder strips that need not cut. Similarly, when the second welding strip cutter cuts all the welding strips of the even number, the avoidance of all the welding strips of the odd number which are not required to be cut can be realized. In addition, collude the sword and can realize cutting to the circle solder strip, also can realize cutting to flat solder strip, increased first solder strip cutter, second solder strip cutter's compatibility.
In some embodiments, the solder strip pulling mechanism includes a first moving mechanism, a second mounting bracket, a fixing clamp plate, a first driving assembly, a second driving assembly, and a plurality of first clamping jaws and a plurality of second clamping jaws arranged in a staggered manner along a second horizontal direction perpendicular to the first horizontal direction, wherein: the second mounting bracket is mounted on a movable part of the first moving mechanism, and the first moving mechanism is used for driving the second mounting bracket to move; the fixed splint is fixedly connected to the mounting bracket; the first driving assembly is arranged on the mounting bracket, and the plurality of first clamping jaws are configured to press all odd-numbered welding belts on the fixed clamping plate under the driving of the first driving assembly; the second driving assembly is arranged on the mounting bracket, and the plurality of second clamping jaws are configured to press all the welding strips of the second number onto the fixing clamping plate under the driving of the second driving assembly.
The utility model provides a simple structure welds area drive mechanism, it can pull out many simultaneously and weld the area to weld all odd numbers and weld the area, all even numbers and weld the area and pull respectively to the different and weld area and place station department, thereby promote the production efficiency who connects formula battery cluster back of the body.
In some embodiments, the battery string welding apparatus further includes a solder strip unwinding mechanism and a solder strip cutting mechanism, wherein: the solder strip unwinding mechanism comprises a first mounting plate and a plurality of unwinding plates arranged on the first mounting plate, and each unwinding plate supports a solder strip coil and discharges a solder strip; the welding strip released by the material placing disc is guided into the welding strip cutting mechanism; the welding strip traction mechanism draws the welding strip from the welding strip cutting mechanism and draws the welding strip to the welding strip processing mechanism; the solder ribbon cutting mechanism cuts the solder ribbon pulled out.
Through setting up solder strip unwinding mechanism and solder strip shutdown mechanism, realized the feed and cut to the solder strip.
In some embodiments, the battery string welding apparatus further comprises a tooling carrier disposed above the weld bead handling mechanism and configured to be raised and lowered; the tool bearing frame is used for receiving and bearing a plurality of welding strip pressing tools with a third preset distance, and the welding strip pressing tools are vertically aligned with the first welding strip group and the second welding strip group which are positioned on the welding strip processing mechanism after being separated according to a preset rule; the welding strip laying mechanism simultaneously picks up the first welding strip groups, the second welding strip groups and the welding strip pressing tools, and lays the picked first welding strip groups, the second welding strip groups and the welding strip pressing tools on the battery pieces.
Through setting up the frock and bearing the frame, realized the transfer buffer memory to the frock for solder strip group and frock can be carried simultaneously by solder strip laying mechanism, stack to the battery piece of laying well.
In some embodiments, the solder strip placement mechanism comprises a second moving mechanism, a third mounting bracket, a tooling suction portion, and a solder strip clamping portion, wherein: the third mounting bracket is mounted on a movable part of a second moving mechanism, and the second moving mechanism is used for driving the third mounting bracket to move; the tool sucking part and the welding strip clamping part are both arranged on the third mounting bracket; when the third mounting bracket is driven by the second moving mechanism to move to a picking station above the tool bearing frame, the tool sucking part sucks a plurality of welding strips from the tool bearing frame to press the tool, and the welding strip clamping part clamps a plurality of first welding strip groups and a plurality of second welding strip groups from the welding strip processing mechanism; when the third mounting bracket is driven by the second moving mechanism to move to the laying station above the welding conveying mechanism, the tool suction part and the welding strip clamping part release the plurality of welding strip pressing tools, the plurality of first welding strip groups and the plurality of second welding strip groups.
The welding strip laying mechanism is simple in structure and convenient and fast to control, and synchronous carrying and laying of the welding strip pressing tool and the welding strip set are implemented through matching of the suction part and the welding strip clamping part.
In some embodiments, the battery string welding equipment further comprises a tool cyclic conveying mechanism, a tool loading and carrying mechanism and a tool unloading and carrying mechanism, wherein: the tool circulating conveying mechanism is used for circularly conveying the welding strip pressing tool; the tool loading and carrying mechanism is used for picking up a plurality of welding strip pressing tools from the tool circulating conveying mechanism, adjusting the distance between the picked welding strip pressing tools to a third preset distance and then placing the welding strip pressing tools on the tool bearing frame; and the tooling blanking carrying mechanism is used for carrying the welding strip pressing tooling from the welding conveying mechanism back to the tooling circulating conveying mechanism after the welding is finished.
Through the cooperation of the tool circulating conveying mechanism, the tool loading and conveying mechanism and the tool unloading and conveying mechanism, the circulating conveying of the welding strip pressing tool and the automatic loading and unloading are realized.
In some embodiments, the tooling material loading handling mechanism comprises a third moving mechanism, a fourth mounting bracket, a second mounting plate, a mounting plate lifting mechanism, a plurality of tooling adsorption plates and a first spacing driving mechanism, wherein: the fourth mounting bracket is mounted on a movable part of the third moving mechanism, and the third moving mechanism is used for driving the fourth mounting bracket to move; the second mounting plate is connected to the fourth mounting bracket in a sliding manner; the tool adsorption plates are connected to the second mounting plate in a sliding mode side by side, and each tool adsorption plate is used for adsorbing one welding strip pressing tool; the mounting plate lifting mechanism is used for driving the second mounting plate to slide up and down along the fourth mounting bracket so as to drive the tool adsorption plates to lift synchronously; the first spacing driving mechanism is used for driving the tool adsorption plates to slide towards the middle along the second installation plate to be close to each other or slide towards two sides to adjust the spacing between the welding strip pressing tools to be a third preset spacing.
The utility model provides a simple structure, the convenient frock material loading transport mechanism of control, it can follow frock endless conveyor and absorb a plurality of welding strips and compress tightly the frock to after compressing tightly the interval adjustment between the frock for the third predetermined interval with the welding strip, carry to the frock and bear on the frame.
In some embodiments, the battery string welding apparatus further includes a battery piece conveying mechanism, a battery piece carrying mechanism, and a battery piece arranging mechanism, wherein: the battery piece conveying mechanism is used for inputting battery pieces to be welded; the battery piece conveying mechanism is used for conveying the battery pieces input by the battery piece conveying mechanism to the battery piece arranging mechanism; the cell slice regulating mechanism is used for regulating the cell slices so as to at least regulate the space between the cell slices to be a first preset space.
Through the cooperation of the cell conveying mechanism, the cell carrying mechanism and the cell arranging mechanism, the automatic feeding and the automatic arrangement of the cells are realized.
In some embodiments, a cell rotating mechanism is further arranged on the cell conveying mechanism; the battery piece rotating mechanism is used for rotating the battery pieces to enable the polarities of the electrode rows of the adjacent battery pieces on the same straight line to be opposite.
The battery piece rotating mechanism is arranged on the battery piece conveying mechanism, so that the battery pieces are rotated, and the opposite polarities of the electrode rows of the adjacent battery pieces on the same straight line are ensured.
In some embodiments, the cell sheet regulating mechanism comprises a mounting base, a plurality of bearing mechanisms and a second spacing driving mechanism, wherein: the plurality of bearing mechanisms are arranged on the mounting seat side by side, and each bearing mechanism is used for bearing one battery piece; the second spacing driving mechanism is arranged on the mounting seat and is configured to independently drive each bearing mechanism to translate so as to adjust the spacing between the battery pieces borne on the bearing mechanisms to be the first preset spacing.
The utility model provides a simple structure, the convenient battery piece is regular mechanism of control, it drives a plurality of bearing mechanism relative movement through second apart from actuating mechanism to the realization is to the adjustment of the interval between the battery piece.
The invention also provides a battery string welding method, which is used for welding battery pieces into a string, wherein the back of each battery piece is provided with a first electrode row and a second electrode row which are arranged in a staggered mode, and the battery string welding method comprises the following steps:
laying a plurality of battery pieces with a first preset interval on a welding and conveying mechanism with the back surfaces facing upwards, wherein electrode rows of adjacent battery pieces on the same straight line have opposite polarities;
drawing a plurality of welding strips extending along a first horizontal direction onto a welding strip processing mechanism;
controlling the welding strip processing mechanism to stagger all the odd welding strips and all the even welding strips by a preset distance in the first horizontal direction;
controlling the welding strip processing mechanism to cut off all the odd welding strips and all the even welding strips alternately to obtain a plurality of first welding strip groups and a plurality of second welding strip groups;
controlling the welding strip processing mechanism to adjust the space between the first welding strip groups and the space between the second welding strip groups to be a second preset space;
stacking the first welding strip group on the odd-numbered electrode rows of the laid corresponding battery pieces, and stacking the second welding strip group on the even-numbered electrode rows of the laid corresponding battery pieces;
and welding the stacked welding strip group and the battery plate into a string.
The battery string welding method realizes the welding string of the back-connected battery pieces.
Particularly, the invention realizes the simultaneous feeding of the first welding strip group and the second welding strip group, the dislocation processing of the first welding strip group and the second welding strip group is completed, and the space between the first welding strip groups and the space between the second welding strip groups are adjusted to the preset values.
Optionally, drawing the plurality of solder strips extending in the first horizontal direction onto the solder strip handling mechanism includes:
pulling a plurality of welding strips extending along a first horizontal direction to a first welding strip placing position, and releasing all odd welding strips so that all odd welding strips fall onto a welding strip processing mechanism;
continuously drawing all the even number of welding strips to a second welding strip placing position behind the first welding strip placing position, releasing all the even number of welding strips, and enabling all the even number of welding strips to fall onto the welding strip processing mechanism; or alternatively
Pulling a plurality of welding strips extending along a first horizontal direction to a first welding strip placing position, and releasing all the welding strips in an even number so that all the welding strips in the even number fall on the welding strip processing mechanism;
and continuously drawing all the odd welding strips to a second welding strip placing position behind the first welding strip placing position, releasing all the odd welding strips, and enabling all the odd welding strips to fall onto the welding strip processing mechanism.
The odd welding strips and the even welding strips are pulled to different welding strip placing stations, so that the odd welding strips and the even welding strips with different lengths are pulled to the welding strip processing device.
Drawings
FIG. 1 is a structural diagram of a back-connected battery piece;
fig. 2 is a schematic structural diagram of four back-connected battery pieces after being welded into a string by a welding strip group;
fig. 3 is a schematic structural diagram of a battery string welding apparatus provided in the present invention;
FIG. 4 is a schematic view of a solder strip handling mechanism according to an embodiment of the present invention from a single perspective;
FIG. 5 is a schematic view of a solder strip handling mechanism according to an embodiment of the present invention from another perspective;
FIG. 6 is a schematic view of the first and second solder strip holding assemblies holding a solder strip in accordance with one embodiment of the present invention;
FIG. 7 is a schematic view of the assembly of a first solder strip holding assembly and a corresponding first solder strip cutter in an embodiment of the present invention;
FIG. 8 is a schematic view of a first strip cutter in an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a solder strip take-off mechanism in an embodiment of the present invention;
FIG. 10 is a schematic view of a portion of a solder strip take-off mechanism in an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a solder ribbon placement mechanism in an embodiment of the present invention;
FIG. 12 is a schematic structural view of a tooling material loading and handling mechanism according to an embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a cell sheet regulating mechanism in an embodiment of the present invention;
the following reference numerals are included in fig. 1 to 13:
a welding conveying mechanism 10;
a battery piece laying mechanism 20;
the solder strip pulling mechanism 30: a first moving mechanism 31, a second mounting bracket 32, a fixed clamping plate 33, a first driving assembly 34, a second driving assembly 35, a first clamping jaw 36 and a second clamping jaw 37;
the solder ribbon processing mechanism 40: the welding device comprises a first welding strip clamping component 41, a second welding strip clamping component 42, a first welding strip cutter 43, a second welding strip cutter 44, a staggered sliding rail 45, a first welding strip component distance sliding rail 46, a second welding strip component distance sliding rail 47, a connecting rod 48, a first mounting bracket 431, a fixed cutter 432, a movable cutter 433, a movable cutter driving mechanism 434 and a hook cutter 435;
solder ribbon laying mechanism 50: a second moving mechanism, a third mounting bracket 51, a tool sucking part 52 and a welding strip clamping part 53;
a welding mechanism 60;
a solder strip unwinding mechanism 70;
a solder ribbon cut-off mechanism 80;
a tooling carrier 90;
a tool circulating conveying mechanism 100;
tool loading and carrying mechanism 110: a fourth mounting bracket 111, a second mounting plate 112, a mounting plate lifting mechanism 113, a tooling adsorption plate 114 and a first spacing driving mechanism 114;
a tooling blanking handling mechanism 120;
a cell conveying mechanism 130;
cell sheet regulating mechanism 140: mounting seat 141, bearing mechanism 142 and second spacing driving mechanism 143
And a battery piece rotating mechanism 150.
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.
Traditional formula battery piece welding equipment of backing joint, in order to realize laying the dislocation of welding strip group, need set up two welding strip material coil groups, every welding strip material coil group all includes a plurality of welding strip material coils. And the welding strip traction mechanism is used for drawing and acquiring a first welding strip group and a second welding strip group from the two welding strip material coil groups in turn, and processing the first welding strip group and the second welding strip group and then laying the first welding strip group and the second welding strip group on the battery piece in a staggered manner.
Traditional back of body formula battery piece welding equipment, it welds the area treatment inefficiency, has finally influenced the production efficiency of battery cluster.
In view of the above, the invention provides a battery string welding device and a welding method, so as to weld back-connected battery pieces into a string.
As shown in fig. 3, the battery string welding apparatus provided by the present invention includes a welding conveying mechanism 10, a battery piece laying mechanism 20, a solder strip pulling mechanism 30, a solder strip processing mechanism 40, a solder strip laying mechanism 50, and a welding mechanism 60, wherein:
the welding conveying mechanism 10 is at least used for carrying the battery plate and the welding strip group.
The cell sheet laying mechanism 20 is used for laying a plurality of cell sheets with a first preset distance on the welding conveying mechanism 10 with the back surfaces facing upwards, and the electrode rows of adjacent cell sheets on the same line are opposite in polarity. The first preset interval is the inter-sheet interval of the welded target battery string.
The solder ribbon drawing mechanism 30 is used for drawing a plurality of solder ribbons extending in a first horizontal direction (X-axis direction in the figure) onto the solder ribbon processing mechanism 40.
The solder ribbon handling mechanism 40 is configured to shift all the odd solder ribbons from all the even solder ribbons by a predetermined distance in the first horizontal direction, and to cut off all the odd solder ribbons and all the even solder ribbons alternately to obtain a plurality of first solder ribbon groups and a plurality of second solder ribbon groups. The solder ribbon handling mechanism 40 is further configured to adjust the spacing between each first solder ribbon group and the spacing between each second solder ribbon group to a second predetermined spacing. Of course, the second predetermined pitch is related to the chip pitch (first predetermined pitch) of the target battery string.
The solder strip laying mechanism 50 is used for stacking the first solder strip groups and the second solder strip groups on the solder strip processing mechanism 40 onto the laid battery pieces, so that the first solder strip groups are stacked onto the odd electrode rows of the corresponding battery pieces, and the second solder strip groups are stacked onto the even electrode rows of the corresponding battery pieces.
The welding mechanism 60 is used for welding the stacked welding strip group and the battery piece into a string.
The working process of the battery string welding equipment is as follows:
the cell sheet laying mechanism 20 lays a plurality of cell sheets with a first preset distance on the welding conveying mechanism 10 with the back surfaces facing upwards, and ensures that the electrode rows of adjacent cell sheets on the same line have opposite polarities.
The solder ribbon drawing mechanism 30 draws a plurality of solder ribbons extending in the first horizontal direction onto the solder ribbon processing mechanism 40.
The solder strip processing mechanism 40 implements a solder strip processing, specifically including:
first, the solder ribbon processing mechanism 40 shifts all the odd solder ribbons by a predetermined distance from all the even solder ribbons in the first horizontal direction.
Next, the solder ribbon processing mechanism 40 cuts off all the odd solder ribbons and all the even solder ribbons alternately, thereby obtaining a plurality of first solder ribbon groups and a plurality of second solder ribbon groups.
Finally, the solder ribbon processing mechanism 40 adjusts the pitch between the first solder ribbon groups and the pitch between the second solder ribbon groups to second predetermined pitches, respectively. And the first welding strip groups and the second welding strip groups are adjusted according to the welding requirements of the target battery strings.
The solder strip placement mechanism 50 picks all the first solder strip groups and the second solder strip groups from the solder strip processing mechanism 40, and stacks the first solder strip groups and the second solder strip groups on the battery pieces placed on the battery piece placement mechanism 20, wherein each first solder strip group is stacked on the odd-numbered electrode rows of the corresponding battery piece, and each second solder strip group is stacked on the even-numbered electrode rows of the corresponding battery piece.
The welding and conveying mechanism 10 conveys the stacked battery plates and the welding strip group to the welding mechanism 60, and the stacked battery plates and the welding strip group are welded into a string by the welding mechanism 60.
Therefore, the battery string welding equipment provided by the invention realizes welding and string forming of the back-to-back battery plates. Particularly, the invention realizes the simultaneous feeding of the first welding strip group and the second welding strip group, and completes the dislocation processing between the first welding strip group and the second welding strip group, and the adjustment of the distance between the first welding strip group and the second welding strip group, namely, the adjustment of the distance between the first welding strip group and the second welding strip group.
In this way, the solder strip laying mechanism 50 can lay all the first solder strip groups and the second solder strip groups on the battery piece at one time, so as to greatly improve the production efficiency of the battery string.
As shown in fig. 4 to 6, the solder strip processing mechanism 40 includes a plurality of first solder strip clamping assemblies 41, a plurality of second solder strip clamping assemblies 42, a plurality of first solder strip cutters 43, and a plurality of second solder strip cutters 44 arranged along a first direction, wherein:
the first welding strip clamping components 41 are matched with each other to clamp all the odd welding strips, a first welding strip cutter 43 is arranged between every two adjacent first welding strip clamping components 41, and each first welding strip cutter 43 is used for cutting off all the odd welding strips at corresponding positions, so that a plurality of first welding strip groups are obtained.
The second welding strip clamping assemblies 42 are matched with each other to clamp all the second welding strips in an even number, a second welding strip cutter 44 is arranged between every two adjacent second welding strip clamping assemblies 42, and each second welding strip cutter 44 is used for cutting off all the second welding strips in the even number at the corresponding position, so that a plurality of second welding strip groups are obtained.
Before all the odd-numbered solder strips are cut off, the first solder strip clamping assemblies 41 and the second solder strip clamping assemblies 42 are relatively translated in the first horizontal direction, so that all the odd-numbered solder strips and all the even-numbered solder strips are staggered by a preset distance in the first horizontal direction.
After all the odd-numbered solder strips are cut, each first solder strip holding member 41 holds a corresponding first solder strip group, and each first solder strip holding member 41 is further configured to be separated in the first horizontal direction, so that the distance between the first solder strip groups is adjusted to a second predetermined distance.
After all the even-numbered solder ribbons are cut, a corresponding second solder ribbon group is respectively clamped on each second solder ribbon clamping component 42, and each second solder ribbon clamping component 42 is also configured to be separated in the first horizontal direction so as to adjust the distance between each second solder ribbon group to be a second preset distance.
As shown in fig. 6, in one embodiment, the solder strip handling mechanism 40 includes six first solder strip holding assemblies 41, six second solder strip holding assemblies 42, five first solder strip cutters 43, and five second solder strip cutters 44, wherein: a first welding strip cutter 43 is arranged between every two adjacent first welding strip clamping assemblies 41, and a second welding strip cutter 44 is arranged between every two adjacent second welding strip clamping assemblies 42.
The operation of the solder strip handling mechanism 40 in the embodiment of fig. 6 is as follows:
the solder ribbon drawing mechanism 30 is controlled to draw a plurality (e.g., 17 in the figure) of solder ribbons extending in a first horizontal direction (e.g., the X-axis direction in the figure) onto the solder ribbon processing mechanism 40.
Controlling the first welding strip clamping assembly 41 and the second welding strip clamping assembly 42 to clamp the welding strip, wherein: the six first solder strip holding assemblies 41 cooperate to hold all the odd solder strips from different positions and the six second solder strip holding assemblies 42 cooperate to hold all the even solder strips from different positions.
The six first solder ribbon holding assemblies 412 are controlled to translate relative to the six second solder ribbon holding assemblies 42 such that all of the odd solder ribbons are offset from all of the even solder ribbons by a predetermined distance in the first horizontal direction.
Then, the five first solder ribbon cutters 43 and the five second solder ribbon cutters 44 are controlled to cut off all the odd solder ribbons and the even solder ribbons from the corresponding positions in synchronization. Thus, six first solder ribbon groups and six second solder ribbon groups are obtained. Each first solder ribbon group is held by the corresponding first solder ribbon holding member 41, and each second solder ribbon group is held by the corresponding second solder ribbon holding member 42.
Finally, control controls the six first solder ribbon holding assemblies 41 to translate apart to adjust the spacing between the six first solder ribbon groups to a second predetermined spacing. The six second solder ribbon holding assemblies 42 are controlled to translate apart to adjust the spacing between the six second solder ribbon groups to a second predetermined spacing.
With continued reference to fig. 4, optionally, the solder strip processing mechanism 40 further includes a base, and a displacement slide rail 45, a first solder strip group pitch slide rail 46, and a second solder strip group pitch slide rail 47 extending along the first horizontal direction, wherein:
dislocation slide rail 45 sets up on the base, and first welding strip divides apart from slide rail 46 sliding connection on dislocation slide rail 45, and the first strip centre gripping subassembly 41 that welds of a plurality of is connected on first welding strip divides apart from slide rail 46.
The second welding strip group spacing slide rail 47 is arranged on the base, and the plurality of second welding strip clamping assemblies 42 are connected to the second welding strip group spacing slide rail 47.
Before all the odd-numbered solder strips are cut off, the first solder strip group is controlled to slide along the offset slide rail 45 from the slide rail 46, so that all the odd-numbered solder strips and all the even-numbered solder strips are staggered by a preset distance in the first horizontal direction.
After all the odd-numbered welding strips are cut off, the first welding strip clamping assemblies 41 are controlled to slide along the first welding strip group spacing slide rails 46 to separate, so that the spacing between the first welding strip groups is adjusted to be a second preset spacing. After all the even-numbered solder strips are cut, the plurality of second solder strip holding assemblies 42 are controlled to slide apart along the second solder strip groups from the slide rails 47, so that the distance between the second solder strip groups is adjusted to a second predetermined distance.
As shown in fig. 7, optionally, the first solder strip holding assembly 41 includes a first solder strip head holder set 411 and a first solder strip tail holder set 412. After the solder strips are pulled onto the solder strip handling mechanism 40, the first solder strip head clamp group 411 and the first solder strip tail clamp group 412 cooperate to clamp all of the odd solder strips at corresponding positions. When all the odd-numbered solder strips are cut off, the first solder strip head clamp group 411 clamps the head of the corresponding first solder strip group, and the first solder strip tail clamp group 412 clamps the tail of the corresponding first solder strip group.
The second solder strip holding assembly 42 has the same structure as the first solder strip holding assembly 41, and includes a second solder strip head clamp group and a second solder strip tail clamp group. After the solder strip is pulled onto the solder strip handling mechanism 40, the second solder strip head clamp group and the second solder strip tail clamp group cooperate to clamp all the second even number of solder strips at corresponding positions. And when all the even number of welding strips are cut off, the head clamping head group of the second welding strip clamps the head of the corresponding second welding strip group, and the tail clamping head group of the second welding strip clamps the tail of the corresponding second welding strip group.
Optionally, each of the first solder strip head clamp group 411 and the first solder strip tail clamp group 412 includes a plurality of first clamps arranged along a second horizontal direction (e.g., a Y-axis direction in fig. 7) perpendicular to the first horizontal direction. After all the odd-numbered solder strips are cut off, each first chuck in the first solder strip head chuck group 411 correspondingly clamps the head of one first solder strip, and each first chuck in the first solder strip tail chuck group 412 correspondingly clamps the tail of one first solder strip.
Similarly, the second welding strip head clamp group and the second welding strip tail clamp group both comprise a plurality of second clamps which are arranged along the second horizontal direction. After all even number welding strips are cut off, each second chuck in the second welding strip tail chuck group 412 correspondingly clamps the head of one second welding strip, and each second chuck in the second welding strip tail chuck group correspondingly clamps the tail of one second welding strip.
Optionally, the first welding strip cutter 43 and the second welding strip cutter 44 have the same structure, and taking the first welding strip cutter 43 as an example, as shown in fig. 8, the first welding strip cutter includes a first mounting bracket 431, a fixed cutter 432, a movable cutter 433 and a movable cutter driving mechanism 434, wherein:
the fixed cutter 432 is fixedly disposed on the first mounting bracket 431 and extends in the second horizontal direction, and a fixed cutting edge is formed at an upper side edge of the fixed cutter 432.
The movable cutter 433 is slidably arranged on the first mounting support 431 and attached to the fixed cutter 432, a plurality of hook knives 435 are arranged on the movable cutter 433 in parallel along the second horizontal direction, the hook knives 435 extend upwards out of the upper side edge of the movable cutter 433, and movable cutting edges are formed at the lower side edge of the hook knives 435.
The movable cutter driving mechanism 434 is used for driving the movable cutter 433 to slide relative to the fixed cutter 432, so as to realize the position switching of the movable cutter 433 between the high position and the low position. When the movable cutter 433 slides to the high position, a gap for the welding strip to pass through is formed between the movable cutting edge of each hook cutter 435 and the fixed cutting edge of the fixed cutter 432. When the movable cutter 433 slides to a low position, the movable cutting edge of each hook knife 435 cooperates with the fixed cutting edge of the fixed cutter 432 to cut off the odd number of welding strips passing through between the movable cutting edge and the fixed cutting edge.
Since the avoidance space is formed between the adjacent hook knives 435, the avoidance of all the even number of the welding strips which are not required to be cut can be realized when all the odd number of the welding strips are cut off by the first welding strip cutter 43.
Similarly, the second welding strip cutter 44 can avoid all the odd welding strips which are not required to be cut when all the even welding strips are cut.
As known to those skilled in the art, the back-connected battery string may include different numbers of first and second solder ribbon groups, for example, as shown in fig. 2, when the battery string is formed by welding an even number of battery pieces (4 battery pieces in the figure), the number of the first solder ribbon groups (1 st, 3 rd and 5 th solder ribbon groups in the figure) used is greater than the number of the second solder ribbon groups (2 nd and 4 th solder ribbon groups in the figure).
In this case, the length of all the odd-numbered solder strips drawn by the solder strip drawing mechanism 30 is longer than the length of all the even-numbered solder strips drawn. That is, the solder ribbon drawing mechanism 30 needs to draw all the odd solder ribbons and all the even solder ribbons to different solder ribbon placement stations when drawing the solder ribbons.
In order to pull all the odd-numbered solder strips and all the even-numbered solder strips to different solder strip placement stations, the embodiment of the present invention provides a novel solder strip pulling mechanism 30, as shown in fig. 9 and 10, the solder strip pulling mechanism 30 includes a first moving mechanism 31, a second mounting bracket 32, a fixed clamp plate 33, a first driving assembly 34, a second driving assembly 35, and a plurality of first clamping jaws 36 and a plurality of second clamping jaws 37 arranged in a staggered manner along a second horizontal direction. Wherein:
the second mounting bracket 32 is mounted on a movable part of the first moving mechanism 31, and the first moving mechanism 31 is used for driving the second mounting bracket 32 to move.
The fixing clamp plate 33 is fixedly connected to the mounting bracket 32.
A first drive assembly 34 is disposed on the mounting bracket 32, and a plurality of first jaws 36 are configured to press all of the odd-numbered solder strips against the stationary jaw 33 under the drive of the first drive assembly 34.
A second drive assembly 35 is disposed on the mounting bracket 32, and a plurality of second jaws 37 are configured to press all of the second even number of solder strips against the fixing jaw 33 under the drive of the second drive assembly 35.
For the application scenario shown in fig. 2, that is, the lengths of all the drawn odd-numbered solder strips are longer than the lengths of all the drawn even-numbered solder strips, the solder strip drawing mechanism 30 works as follows:
the first moving mechanism 31 drives the mounting bracket 32 to move to an initial drawing station (e.g. a welding strip cutting station) of the welding strip, so that the drawing ends of all the odd welding strips and all the even welding strips extend into the fixed clamping plate 33 and are located below the corresponding first clamping jaw 36 or second clamping jaw 37.
The first and second driving assemblies 34 and 35 respectively drive the first and second clamping jaws 36 and 37 to rotate toward the fixed clamping plate 33, so that all the odd-numbered solder strips and all the even-numbered solder strips are pressed on the fixed clamping plate 33.
Then, the first moving mechanism 31 drives the mounting bracket 32 to move to the first solder strip placement position, the second driving assembly 35 drives each second clamping jaw 37 to rotate away from the fixed clamping plate 33, and the pulling ends of all the even number of solder strips are separated from the fixed clamping plate 33 and fall to the first solder strip placement position.
The first moving mechanism 31 drives the control mounting bracket 32 to move continuously to the second welding strip placing position located at the rear of the first welding strip placing position, the first driving assembly 34 drives each first clamping jaw 36 to rotate away from the fixed clamping plate 33, and the traction ends of all the odd welding strips are separated from the fixed clamping plate 33 and fall to the first welding strip placing position.
Therefore, the lengths of all the odd-numbered welding strips pulled out by the welding strip pulling mechanism 30 can be ensured to be longer than the lengths of all the even-numbered welding strips pulled out.
Of course, the solder ribbon drawing mechanism 30 may also control the first drive assembly 34 to perform a releasing action prior to the second drive assembly 35 so that all even solder ribbons are drawn longer than all odd solder ribbons. Or the first driving assembly 34 and the second driving assembly 35 are controlled to simultaneously execute the releasing action, so that the lengths of all the drawn even-numbered welding strips are the same as the lengths of all the drawn odd-numbered welding strips, namely, all the even-numbered welding strips and all the odd-numbered welding strips are drawn at the same welding strip placing station.
As shown in fig. 1, optionally, the battery string welding apparatus according to the embodiment of the present invention further includes a solder strip unwinding mechanism 70 and a solder strip cutting mechanism 80, where: the solder strip unwinding mechanism 70 includes a first mounting plate and a plurality of unwinding plates disposed on the first mounting plate, each of the unwinding plates supports a solder strip roll and discharges a solder strip. The solder ribbon paid out from the take-off reel is guided into the solder ribbon cutting mechanism 80. The solder strip drawing mechanism 30 draws the solder strip from the solder strip cutting mechanism 80 and draws the solder strip to the solder strip processing mechanism 40.
After all the odd-numbered solder strips and all the even-numbered solder strips are pulled to the same solder strip placement station or different solder strip placement stations by the solder strip pulling mechanism 30, the solder strip cutting mechanism 80 cuts the solder strips.
As shown in fig. 1, optionally, the battery string welding apparatus according to the embodiment of the present invention further includes a tool carrier 90 disposed above the solder ribbon processing mechanism 40 and configured to be lifted.
The tool bearing frame 90 is used for receiving and bearing a plurality of welding strip pressing tools with third preset intervals, and the welding strip pressing tools are vertically aligned with the first welding strip group and the second welding strip group which are positioned on the welding strip processing mechanism 30 after being separated according to preset rules.
When the welding strip traction device 30 and the welding strip processing mechanism 40 perform welding strip traction and welding strip processing, the tool bearing frame 90 is at a high position far away from the welding strip processing mechanism 40, so that avoidance of the welding strip traction device 30 is realized.
After the welding strip processing mechanism 40 finishes the welding strip processing, the tool bearing frame 90 carries a plurality of welding strip pressing tools loaded on the tool bearing frame to descend to a low position close to the welding strip processing mechanism 40.
Next, the solder strip laying mechanism 50 moves to the position above the tooling carrier 90, picks up all the solder strip pressing tooling, all the first solder strip groups and all the second solder strip groups from the tooling carrier 90 and the solder strip processing mechanism 40, and lays the picked-up solder strip pressing tooling, the first solder strip groups and the second solder strip groups on the battery piece at one time.
Thus, the solder strip laying mechanism 50 can carry and stack the solder strip groups and the solder strip pressing tools onto the laid battery pieces simultaneously only by carrying out once carrying and laying actions, and after the stacking is completed, each solder strip pressing tool presses the corresponding solder strip group onto the corresponding battery piece.
As shown in fig. 11, optionally, the solder strip laying mechanism 50 includes a second moving mechanism, a third mounting bracket 51, a tool sucking part 52 and a solder strip clamping part 53, wherein:
the third mounting bracket 51 is mounted on a movable part of a second moving mechanism for driving the third mounting bracket 51 to move.
The tool suction portion 52 and the solder strip clamping portion 53 are both mounted on the third mounting bracket 51.
When the third mounting bracket 51 is driven by the second moving mechanism to move to the picking station above the tool carrier 90, the tool suction part 52 sucks a plurality of solder strips from the tool carrier 90 to compress the tool, and the solder strip clamping part 53 clamps a plurality of processed first solder strip groups and a plurality of processed second solder strip groups from the solder strip processing mechanism 40.
When the third mounting bracket 51 is driven by the second moving mechanism to move to the laying station above the welding and conveying mechanism 10, the tool suction part 52 and the welding strip clamping part 53 respectively release the plurality of welding strip pressing tools, the plurality of first welding strip groups and the plurality of second welding strip groups, so that the welding strip pressing tools, the first welding strip groups and the second welding strip groups are stacked on the corresponding battery pieces.
As shown in fig. 1, optionally, the battery string welding apparatus according to the embodiment of the present invention further includes a tooling circulation conveying mechanism 100, a tooling loading and carrying mechanism 110, and a tooling unloading and carrying mechanism 120, where:
the tool circulating conveying mechanism 100 is used for circularly conveying the welding strip pressing tool.
The tooling material loading and carrying mechanism 110 is used for picking up a plurality of welding strip pressing tools from the tooling circulating conveying mechanism 100, adjusting the distance between the picked-up welding strip pressing tools to a third preset distance, and placing the welding strip pressing tools on the tooling bearing frame 90.
The tooling blanking and carrying mechanism 120 is used for carrying the welding strip pressing tooling from the welding and conveying mechanism 10 back to the tooling circulating and conveying mechanism 100 after welding is completed.
Through the cooperation of the tool circular conveying mechanism 100, the tool loading and conveying mechanism 110 and the tool unloading and conveying mechanism 120, the circular conveying of the welding strip pressing tool and automatic loading and unloading are realized.
As shown in fig. 12, optionally, the tooling material loading and transporting mechanism 110 includes a third moving mechanism, a fourth mounting bracket 111, a second mounting plate 112, a mounting plate lifting mechanism 113, a plurality of tooling absorption plates 114, and a first spacing driving mechanism 115, wherein:
the fourth mounting bracket 111 is mounted on a movable part of a third moving mechanism for driving the fourth mounting bracket 111 to move.
The second mounting plate 112 is slidably attached to the fourth mounting bracket 111.
A plurality of frock adsorption plate 114 are sliding connection side by side on second mounting panel 112, and every frock adsorption plate 114 all is used for adsorbing a solder strip and compresses tightly the frock.
The mounting plate lifting mechanism 113 is used for driving the second mounting plate 112 to slide up and down along the fourth mounting bracket 111 so as to drive each tool adsorption plate 114 to lift synchronously.
The first spacing driving mechanism 115 is configured to drive each tool adsorption plate 114 to slide toward the middle or slide toward both sides along the second mounting plate 112, so as to adjust the spacing between the solder ribbon pressing tools to a third predetermined spacing.
The working process of the tool loading and carrying mechanism 110 is as follows:
in the initial state, the tool adsorption plates 114 are in the close state, and the second mounting plate 112 is in the initial high position.
The third moving mechanism drives the fourth mounting bracket 111 to move to the position above the tooling circulating conveying mechanism 100, the mounting plate lifting mechanism 113 drives the second mounting plate 112 to descend, and each tooling adsorption plate 114 adsorbs a welding strip from the tooling circulating conveying mechanism 100 to compress the tooling.
The mounting plate lifting mechanism 113 drives the second mounting plate 112 to ascend and return.
The first spacing driving mechanism 115 drives the tool adsorption plates 114 to slide towards two sides until the spacing between the welding strip pressing tools is adjusted to be a third preset spacing.
The third moving mechanism drives the fourth mounting bracket 111 to move to the position above the tooling bearing frame 90, and controls each tooling adsorption plate 114 to release the corresponding welding strip to compress the tooling.
With continued reference to fig. 1, the battery string welding apparatus in the embodiment of the present invention further includes a battery piece conveying mechanism 130, a battery piece carrying mechanism, and a battery piece arranging mechanism 140, wherein: the cell conveying mechanism 130 is used for inputting the cell to be welded. The cell conveying mechanism is used for conveying the cell fed by the cell conveying mechanism 130 to the cell arranging mechanism 140. The cell sheet regulating mechanism 140 is used for regulating the cell sheets to at least regulate the space between the cell sheets to a first preset space.
The cell sheet laying mechanism 20 picks up the cell sheets with the adjusted intervals from the cell sheet regulating mechanism 140, and lays the cell sheets to the welding conveying mechanism 10.
Optionally, the cell conveying mechanism 130 is further provided with a cell rotating mechanism 150. The cell rotation mechanism 150 is used to rotate the cells so that the electrode rows of adjacent cells are opposite in polarity.
As shown in fig. 13, optionally, the cell sheet regulating mechanism 140 includes a mounting seat 141, a plurality of bearing mechanisms 143, and a second spacing driving mechanism 142, wherein:
a plurality of bearing mechanisms 143 are arranged on the mounting seat 141 side by side, and each bearing mechanism 143 is used for bearing one battery piece. The second pitch drive mechanism 142 is disposed on the mounting seat 141, and the second pitch drive mechanism 142 is configured to independently drive each of the carrying mechanisms 143 to translate, so as to adjust the pitch between the battery pieces carried on the carrying mechanisms 143 to the first predetermined pitch.
The invention also provides a battery string welding method, which is used for welding battery pieces into a string, wherein the back of each battery piece is provided with a first electrode row and a second electrode row which are arranged in a staggered mode.
The battery string welding method provided by the invention can be implemented by the battery string welding equipment. Specifically, the battery string welding method provided by the invention comprises the following steps:
and laying a plurality of battery pieces with a first preset interval on the welding conveying mechanism with the back surfaces facing upwards, wherein the electrode rows of the adjacent battery pieces on the same line have opposite polarities.
And drawing a plurality of welding strips extending along the first horizontal direction to the welding strip processing mechanism.
And controlling the welding strip processing mechanism to stagger all the odd welding strips and all the even welding strips by a preset distance in the first horizontal direction.
And controlling the welding strip processing mechanism to cut off all the odd welding strips and all the even welding strips alternately to obtain a plurality of first welding strip groups and a plurality of second welding strip groups.
And controlling the solder strip processing mechanism to adjust the space between the first solder strip groups and the space between the second solder strip groups to be a second preset space.
And stacking the first welding strip group on the odd-numbered electrode rows of the laid corresponding battery pieces, and stacking the second welding strip group on the even-numbered electrode rows of the laid corresponding battery pieces.
And welding the stacked welding strip group and the battery plate into a string.
As mentioned above, in some embodiments, the battery string includes different numbers of the first solder ribbon groups and the second solder ribbon groups, and correspondingly, the lengths of all the odd solder ribbons pulled out are different from the lengths of all the even solder ribbons pulled out.
In view of this, optionally, the drawing the plurality of solder strips extending in the first horizontal direction onto the solder strip handling mechanism includes:
and dragging the plurality of welding strips extending along the first horizontal direction to the first welding strip placement position, and releasing all the odd welding strips so that all the odd welding strips fall onto the welding strip processing mechanism.
And continuously drawing all the even number of welding strips to the second welding strip placement position located at the next place where the first welding strip is placed, releasing all the even number of welding strips, and enabling all the even number of welding strips to fall onto the welding strip processing mechanism. Or is at
Pulling a plurality of welding strips extending along a first horizontal direction to a first welding strip placing position, and releasing all the welding strips in an even number so that all the welding strips in the even number fall on the welding strip processing mechanism;
and continuously drawing all the odd welding strips to the second welding strip placing position located at the next place after the first welding strip is placed, releasing all the odd welding strips, and enabling all the odd welding strips to fall onto the welding strip processing mechanism.
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 (15)

1. The utility model provides a battery cluster welding equipment for weld the battery piece into the cluster, the back of battery piece is equipped with first electrode row and the second electrode row of crisscross arrangement, its characterized in that, battery cluster welding equipment is including welding conveying mechanism, battery piece laying mechanism, welding and taking drive mechanism, welding and taking processing mechanism, welding and taking laying mechanism and welding mechanism, wherein:
the welding conveying mechanism is at least used for bearing the battery plate and the welding strip group;
the battery piece laying mechanism is used for laying a plurality of battery pieces with a first preset distance on the welding conveying mechanism with the back surfaces facing upwards, and the electrode rows of the adjacent battery pieces on the same straight line have opposite polarities;
the welding strip traction mechanism is used for drawing a plurality of welding strips extending along a first horizontal direction to the welding strip processing mechanism;
the welding strip processing mechanism is used for staggering all odd welding strips and all even welding strips in a preset distance in the first horizontal direction and cutting off all the odd welding strips and all the even welding strips alternately to obtain a plurality of first welding strip groups and a plurality of second welding strip groups, and the welding strip processing mechanism is also used for adjusting the distance between the first welding strip groups and the distance between the second welding strip groups to be a second preset distance;
the welding strip laying mechanism is used for stacking a plurality of first welding strip groups and a plurality of second welding strip groups on the welding strip processing mechanism onto a plurality of laid battery pieces, enabling each first welding strip group to be stacked onto odd electrode rows of the corresponding battery piece, and enabling each second welding strip group to be stacked onto even electrode rows of the corresponding battery piece;
the welding mechanism is used for welding the stacked welding strip group and the battery piece into a string.
2. The battery string welding apparatus according to claim 1, wherein: weld and take processing agency including following a plurality of first welding strip centre gripping subassembly, a plurality of second welding strip centre gripping subassembly, a plurality of first welding strip cutter and a plurality of second welding strip cutter that first direction was arranged, wherein:
the first welding strip clamping assemblies are matched with and clamp all odd welding strips, a first welding strip cutter is arranged between every two adjacent first welding strip clamping assemblies, and each first welding strip cutter is used for cutting off all the odd welding strips at corresponding positions to obtain a plurality of first welding strip groups;
the second welding strip clamping assemblies are matched with and clamp all the second welding strips in an even number, a second welding strip cutter is arranged between every two adjacent second welding strip clamping assemblies, and each second welding strip cutter is used for cutting off all the second welding strips in an even number at corresponding positions to obtain a plurality of second welding strip groups;
before all the odd welding strips are cut off, the first welding strip clamping assemblies and/or the second welding strip clamping assemblies translate in the first horizontal direction, so that all the odd welding strips and all the even welding strips are staggered by a preset distance in the first horizontal direction;
after all the odd-numbered solder strips are cut off, each first solder strip clamping assembly respectively clamps one corresponding first solder strip group, and each first solder strip clamping assembly is further configured to be separated in the first horizontal direction so as to adjust the distance between the first solder strip groups to be the second preset distance;
after all the even number of solder strips are cut off, each second solder strip clamping assembly respectively clamps one corresponding second solder strip group, and each second solder strip clamping assembly is further configured to be separated in the first horizontal direction so as to adjust the distance between the second solder strip groups to be the second preset distance.
3. The battery string welding apparatus according to claim 2, wherein: weld and take processing agency still includes the base and follow dislocation slide rail, first welding that first horizontal direction extends take the component apart from slide rail and second to weld and take the component apart from slide rail, wherein:
the staggered slide rail is arranged on the base, the first welding strip group distance slide rail is connected to the staggered slide rail in a sliding manner, and the first welding strip clamping assemblies are connected to the first welding strip group distance slide rail;
the second welding strip group spacing slide rails are arranged on the base, and the plurality of second welding strip clamping components are connected to the second welding strip group spacing slide rails;
before all odd-numbered welding strips are cut off, the first welding strip group slides along the staggered slide rail from the slide rail, so that all odd-numbered welding strips and all even-numbered welding strips are staggered by a preset distance in the first horizontal direction;
after all odd welding strips are cut off, the first welding strip clamping assemblies slide along the first welding strip group distance slide rails to separate, so that the distance between every two first welding strip groups is adjusted to be a second preset distance;
after all the even number welding strips are cut off, the second welding strip clamping assemblies slide along the second welding strip group distance slide rails to separate, so that the distance between the second welding strip groups is adjusted to be a second preset distance.
4. The battery string welding apparatus of claim 2, wherein the first ribbon cutter and the second ribbon cutter each comprise a first mounting bracket, a fixed cutter, a movable cutter, and a movable cutter drive mechanism, wherein:
the fixed cutter is fixedly arranged on the first mounting bracket and extends along the second horizontal direction, and a fixed cutting edge is formed at the edge of the upper side of the fixed cutter;
the movable cutter is arranged on the first mounting bracket in a sliding manner and is attached to the fixed cutter, a plurality of hook cutters are arranged on the movable cutter side by side along the second horizontal direction, the hook cutters extend upwards out of the upper side edge of the movable cutter, and a movable cutting edge is formed at the lower side edge of each hook cutter;
the movable cutter driving mechanism is used for driving the movable cutter to slide relative to the fixed cutter so as to realize the position switching of the movable cutter between a high position and a low position;
when the movable cutters slide to the high positions, gaps for welding belts to pass through are formed between the movable cutting edges of the hook cutters and the fixed cutting edges of the fixed cutters; when the movable cutters slide to a low position, the movable cutting edges of the hook cutters are matched with the fixed cutting edges of the fixed cutters to cut off the welding strips passing through the movable cutting edges and the fixed cutters.
5. The battery string welding apparatus according to claim 1, wherein the solder ribbon pulling mechanism comprises a first moving mechanism, a second mounting bracket, a fixing clamp plate, a first driving assembly, a second driving assembly, and a plurality of first clamping jaws and a plurality of second clamping jaws arranged in a staggered manner along a second horizontal direction perpendicular to the first horizontal direction, wherein:
the second mounting bracket is mounted on a movable part of the first moving mechanism, and the first moving mechanism is used for driving the second mounting bracket to move;
the fixed clamping plate is fixedly connected to the mounting bracket;
the first driving assembly is arranged on the mounting bracket, and the first clamping jaws are configured to press all odd welding strips on the fixed clamping plate under the driving of the first driving assembly;
the second driving assembly is arranged on the mounting bracket, and the second clamping jaws are configured to press all the second even number of welding strips on the fixing clamping plate under the driving of the second driving assembly.
6. The battery string welding apparatus according to claim 1, further comprising a solder ribbon unwinding mechanism and a solder ribbon cutting mechanism, wherein:
the solder strip unwinding mechanism comprises a first mounting plate and a plurality of unwinding plates arranged on the first mounting plate, and each unwinding plate supports a solder strip coil and discharges a solder strip;
the welding strip released by the discharging tray is guided into the welding strip cutting mechanism;
the welding strip traction mechanism is used for drawing the welding strip from the welding strip cutting mechanism and drawing the welding strip to the welding strip processing mechanism;
the solder strip cutting mechanism cuts the solder strip drawn out.
7. The battery string welding apparatus according to claim 1, further comprising a tool carrier disposed above the solder ribbon handling mechanism and configured to be lifted;
the tool bearing frame is used for receiving and bearing a plurality of welding strip pressing tools with a third preset distance, and the welding strip pressing tools are vertically aligned with the first welding strip group and the second welding strip group which are positioned on the welding strip processing mechanism after being separated according to a preset rule;
the welding strip laying mechanism picks up the first welding strip group, the second welding strip group and the second welding strip group simultaneously, the welding strips compress the tool, and the first welding strip group, the second welding strip group and the second welding strip group compress the tool to be laid on the battery pieces.
8. The battery string welding apparatus of claim 7, wherein the solder strip placement mechanism comprises a second moving mechanism, a third mounting bracket, a tooling suction portion, and a solder strip clamping portion, wherein:
the third mounting bracket is mounted on a movable part of the second moving mechanism, and the second moving mechanism is used for driving the third mounting bracket to move;
the tool sucking part and the welding strip clamping part are both arranged on the third mounting bracket;
when the third mounting bracket is driven by the second moving mechanism to move to a picking station above the tool bearing frame, the tool sucking part sucks a plurality of welding strip pressing tools from the tool bearing frame, and the welding strip clamping part clamps a plurality of first welding strip groups and a plurality of second welding strip groups from the welding strip processing mechanism;
when the third mounting bracket is driven by the second moving mechanism to move to a laying station above the welding conveying mechanism, the tool suction part and the welding strip clamping part release a plurality of welding strip pressing tools, a plurality of first welding strip groups and a plurality of second welding strip groups.
9. The battery string welding device according to claim 7, further comprising a tooling circulation conveying mechanism, a tooling loading and carrying mechanism, and a tooling unloading and carrying mechanism, wherein:
the tool circulating conveying mechanism is used for circularly conveying the welding strip pressing tool;
the tool loading and carrying mechanism is used for picking up a plurality of welding strip pressing tools from the tool circulating conveying mechanism, adjusting the distance between the picked welding strip pressing tools to be the third preset distance and then placing the welding strip pressing tools on the tool bearing frame;
and the tooling blanking carrying mechanism is used for carrying the welding strip pressing tooling back to the tooling circulating conveying mechanism from the welding conveying mechanism after welding is finished.
10. The battery string welding device according to claim 9, wherein the tooling material loading and carrying mechanism includes a third moving mechanism, a fourth mounting bracket, a second mounting plate, a mounting plate lifting mechanism, a plurality of tooling adsorption plates, and a first spacing driving mechanism, wherein:
the fourth mounting bracket is mounted on a movable part of the third moving mechanism, and the third moving mechanism is used for driving the fourth mounting bracket to move;
the second mounting plate is connected to the fourth mounting bracket in a sliding manner;
the tool adsorption plates are connected to the second mounting plate in a sliding mode side by side, and each tool adsorption plate is used for adsorbing a welding strip pressing tool;
the mounting plate lifting mechanism is used for driving the second mounting plate to slide up and down along the fourth mounting bracket so as to drive the tool adsorption plates to lift synchronously;
the first spacing driving mechanism is used for driving the tool adsorption plates to slide towards the middle or slide towards two sides along the second mounting plate to separate, so that the spacing between the welding strip pressing tools is adjusted to be the third preset spacing.
11. The battery string welding apparatus according to claim 1, further comprising a cell conveying mechanism, a cell handling mechanism, and a cell organizer mechanism, wherein:
the battery piece conveying mechanism is used for inputting battery pieces to be welded;
the battery piece conveying mechanism is used for conveying the battery pieces input by the battery piece conveying mechanism to the battery piece arranging mechanism;
the cell slice regulating mechanism is used for regulating the cell slices so as to at least regulate the space between the cell slices to be the first preset space.
12. The battery string welding device according to claim 11, wherein a battery piece rotating mechanism is further provided on the battery piece conveying mechanism;
the battery piece rotating mechanism is used for rotating the battery pieces to enable the polarities of the electrode rows of the adjacent battery pieces on the same straight line to be opposite.
13. The battery string welding apparatus of claim 11, wherein the cell gauge mechanism comprises a mounting base, a plurality of load bearing mechanisms, and a second spaced apart drive mechanism, wherein:
the plurality of bearing mechanisms are arranged on the mounting seat side by side, and each bearing mechanism is used for bearing one battery piece;
the second spacing driving mechanism is arranged on the mounting seat and is configured to independently drive each bearing mechanism to translate so as to adjust the spacing between the battery pieces borne on the bearing mechanisms to the first preset spacing.
14. A cell string welding method is used for welding cell sheets into a string, and a first electrode row and a second electrode row which are arranged in a staggered mode are arranged on the back surfaces of the cell sheets, and is characterized by comprising the following steps:
laying a plurality of battery pieces with a first preset interval on the welding conveying mechanism with the back surfaces facing upwards, wherein electrode rows of adjacent battery pieces on the same straight line are opposite in polarity;
drawing a plurality of welding strips extending along a first horizontal direction onto the welding strip processing mechanism;
controlling the welding strip processing mechanism to stagger all the odd welding strips and all the even welding strips by a preset distance in the first horizontal direction;
controlling the welding strip processing mechanism to cut off all the odd welding strips and all the even welding strips alternately to obtain a plurality of first welding strip groups and a plurality of second welding strip groups;
controlling the welding strip processing mechanism to adjust the distance between the first welding strip groups and the distance between the second welding strip groups to be a second preset distance;
controlling the welding strip processing mechanism to stack the first welding strip group on the odd-numbered electrode rows of the laid corresponding battery pieces, and stack the second welding strip group on the even-numbered electrode rows of the laid corresponding battery pieces;
and welding the stacked welding strip group and the battery plate into a string.
15. The method of claim 14, wherein drawing a plurality of solder ribbons extending in a first horizontal direction onto the solder ribbon handling mechanism comprises:
drawing a plurality of welding strips extending along the first horizontal direction to a first welding strip placement position, and releasing all the odd welding strips so that all the odd welding strips fall onto the welding strip processing mechanism;
continuously drawing all the even number of welding strips to a second welding strip placing position behind the first welding strip placing position, releasing all the even number of welding strips, and enabling all the even number of welding strips to fall onto the welding strip processing mechanism; or
Pulling a plurality of welding strips extending along the first horizontal direction to a first welding strip placing position, and releasing all the welding strips in an even number so that all the welding strips in the even number fall on the welding strip processing mechanism;
and continuously drawing all the odd welding strips to a second welding strip placing position behind the first welding strip placing position, releasing all the odd welding strips, and enabling all the odd welding strips to fall onto the welding strip processing mechanism.
CN202210509687.6A 2022-05-11 2022-05-11 Battery string welding equipment and welding method Pending CN114871764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210509687.6A CN114871764A (en) 2022-05-11 2022-05-11 Battery string welding equipment and welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210509687.6A CN114871764A (en) 2022-05-11 2022-05-11 Battery string welding equipment and welding method

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CN114871764A true CN114871764A (en) 2022-08-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023217167A1 (en) * 2022-05-11 2023-11-16 无锡奥特维科技股份有限公司 Solder strip processing mechanism
CN117464124A (en) * 2023-12-25 2024-01-30 浙江晶科能源有限公司 Welding equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023217167A1 (en) * 2022-05-11 2023-11-16 无锡奥特维科技股份有限公司 Solder strip processing mechanism
CN117464124A (en) * 2023-12-25 2024-01-30 浙江晶科能源有限公司 Welding equipment

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