CN116140898A - Welding strip clamping device and battery string repairing method - Google Patents

Welding strip clamping device and battery string repairing method Download PDF

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Publication number
CN116140898A
CN116140898A CN202310094789.0A CN202310094789A CN116140898A CN 116140898 A CN116140898 A CN 116140898A CN 202310094789 A CN202310094789 A CN 202310094789A CN 116140898 A CN116140898 A CN 116140898A
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CN
China
Prior art keywords
chuck
welding
mounting seat
clamping
spring
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Pending
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CN202310094789.0A
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Chinese (zh)
Inventor
王群
马红伟
周希巍
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Wuxi Autowell Technology Co Ltd
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Wuxi Autowell Technology Co Ltd
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Priority to CN202310094789.0A priority Critical patent/CN116140898A/en
Publication of CN116140898A publication Critical patent/CN116140898A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention provides a welding strip clamping device and a battery string repairing method, wherein the welding strip clamping device comprises a mounting bracket, a first chuck mounting seat, a second chuck mounting seat, a clamping driving mechanism, a first chuck and a second chuck which are arranged in pairs, wherein the first chuck and the second chuck are arranged in pairs: the first chuck mounting seat and the second chuck mounting seat are both slidably mounted on the mounting bracket, and the clamping driving mechanism is used for driving the first chuck mounting seat and the second chuck mounting seat to approach towards the middle or separate towards two sides; the first cartridge is disposed on the first cartridge mount and the second cartridge is disposed on the second cartridge mount, wherein the first cartridge and/or the second cartridge are configured to be capable of floating up and down relative to the corresponding cartridge mount. According to the welding strip clamping device, the first clamping head and the second clamping head can realize self-adaptive adjustment of the relative positions in the height direction in the descending welding strip clamping process, so that the effective clamping of the welding strip is ensured, and the subsequent lap welding quality is finally ensured.

Description

Welding strip clamping device and battery string repairing method
Technical Field
The invention relates to the field of battery production, in particular to a welding strip clamping device and a battery string repairing method.
Background
In the repair method of the battery string, one is to cut off the solder strip between the defective battery piece and the adjacent battery piece, replace the defective battery piece with the replacement battery piece with the solder strip, and lap-weld the solder strip on the replacement battery piece with the solder strip on the adjacent battery piece, thereby completing the repair.
When lap welding is carried out, the welding strip on the replacement battery piece and the welding strip on the adjacent battery piece are required to be clamped together, in the existing welding strip clamping device, two chucks for clamping the welding strip in a matched mode are fixedly arranged, and due to assembly or manufacturing errors and other reasons, when the welding strip is clamped, the welding strip cannot be clamped due to the fact that the welding strip cannot be accurately matched, and the follow-up lap welding quality is affected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a welding strip clamping device, which adopts the following technical scheme:
the utility model provides a welding strip clamping device, includes installing support, first chuck mount pad, second chuck mount pad, centre gripping actuating mechanism, at least a set of first chuck and the second chuck that sets up, wherein:
the first chuck mounting seat and the second chuck mounting seat are both slidably mounted on the mounting bracket and are both connected with the driving end of the clamping driving mechanism, and the clamping driving mechanism is used for driving the first chuck mounting seat and the second chuck mounting seat to be close to each other in the middle or to be separated from each other in the two sides;
The first chuck is arranged on the first chuck mounting seat, the second chuck is arranged on the second chuck mounting seat, wherein the first chuck is configured to be capable of floating up and down relative to the first chuck mounting seat, and/or the second chuck is configured to be capable of floating up and down relative to the second chuck mounting seat;
when the clamping driving mechanism drives the first chuck mounting seat and the second chuck mounting seat to approach towards the middle, the first chuck and the corresponding second chuck are clamped to clamp the welding strip;
when the clamping driving mechanism drives the first chuck mounting seat and the second chuck mounting seat to separate towards two sides, the first chuck and the corresponding second chuck are opened to release the welding strip.
According to the welding strip clamping device, at least one of the first clamping head and the second clamping head can be connected to the corresponding clamping head mounting seat in a vertically floating mode, and the first clamping head and the second clamping head can be adjusted in a self-adaptive mode in the height direction in the process of descending and clamping the welding strip. Therefore, even if the first chuck and the second chuck have assembly or manufacturing errors, accurate matching can be realized so as to effectively clamp the butt welding belt, and the subsequent lap welding quality is finally ensured.
In some embodiments, the weld-strap gripping device includes a set of first and second jaws; the first chuck can be connected to the first chuck mounting seat in an up-and-down floating manner through the first floating assembly; and/or the second chuck is connected to the second chuck mounting base in an up-and-down floating manner through the second floating assembly.
The welding strip clamping device is only provided with a group of first clamping heads and second clamping heads, so that the welding strip clamping device only clamps and overlaps a pair of first welding strips and second welding strips each time, the repair is more flexible, and the mutual interference when clamping different butt welding strips is avoided.
In some embodiments, the first floating assembly comprises a first spring retainer plate, a first guide post, and a first spring, wherein: the first spring limiting plate is fixedly arranged above the first chuck mounting seat, the upper end of the first guide pillar is in sliding connection with the first spring limiting plate, the lower end of the first guide pillar is in sliding connection with the first chuck mounting seat and penetrates out of the first chuck mounting seat downwards, the first spring is sleeved on the first guide pillar, the upper end of the first spring is abutted against the first spring limiting plate, and the lower end of the first spring is abutted against the first chuck mounting seat; the first chuck is connected to the lower end of the first guide post.
The first floating assembly is simple in structure, and the first chuck is connected with the first chuck mounting seat in a floating mode through telescopic adjustment of the first spring.
In some embodiments, the second floating assembly comprises a second spring retainer plate, a second guide post, and a second spring, wherein: the second spring limiting plate is fixedly arranged above the second chuck mounting seat, the upper end of the second guide post is in sliding connection with the second spring limiting plate, the lower end of the second guide post is in sliding connection with the second chuck mounting seat and penetrates out of the second chuck mounting seat downwards, the second spring is sleeved on the second guide post, the upper end of the second spring is abutted against the second spring limiting plate, and the lower end of the second spring is abutted against the second chuck mounting seat; the second chuck is connected to the lower end of the second guide post.
The second floating assembly is simple in structure, and the second chuck is connected with the second chuck mounting seat in a floating mode through telescopic adjustment of the second spring.
In some embodiments, the weld bead gripping device further comprises a first adaptive adjustment assembly comprising a first spring seat fixedly mounted on the second collet mount and a third spring; the middle part fixed connection of second chuck is in the lower extreme of second guide pillar, and the first end of second chuck is used for with corresponding first chuck cooperation centre gripping welding strip, presses the third spring between second end and the first spring holder of second chuck.
Through setting up first self-adaptation adjusting part for the first end of second chuck can elasticity press on the first end of first chuck, thereby the second chuck can be according to the welding strip by the thickness of centre gripping position realize self-adaptation rotation, guarantees that the first end of second chuck can implement the centre gripping to the welding strip of different thickness with the first end of first chuck, and the centre gripping of the welding strip that has the foreign matter on it.
In some embodiments, the weld bead gripping device includes at least two sets of a first collet and a second collet, wherein: the first chucks are arranged side by side at intervals and can be connected to the first chuck mounting seat in an up-down floating manner through the third floating assembly; and/or each second chuck is arranged side by side at intervals and can be connected to the second chuck mounting seat in an up-and-down floating manner through the fourth floating assembly.
Through setting up multiunit first chuck and second chuck, welding strip clamping device can implement the centre gripping to the first welding strip of many pairs and second welding strip simultaneously for welding device can be synchronous or continuous implementation to the welding of the first welding strip of many pairs and second welding strip of being held, thereby promotes overlap joint welded efficiency.
In some embodiments, the third floating assembly comprises a lift base, a third guide post, and a fourth spring, wherein: the upper end of the third guide post is fixedly connected to the first chuck mounting seat, the lower end of the third guide post is connected to the lifting seat in a sliding manner, the fourth spring is sleeved on the third guide post, the upper end of the fourth spring is abutted to the first chuck mounting seat, and the lower end of the fourth spring is abutted to the lifting seat; the first chucks are jointly arranged on the lifting seat, and the clamping ends of the first chucks extend out of the lifting seat downwards.
The third floating assembly is simple in structure, and floating connection of the first chuck and the first chuck mounting seat is achieved through telescopic adjustment of the fourth spring.
In some embodiments, the welding strip clamping device further comprises a clamping plate, each first clamping head is integrally formed at the lower end of the clamping plate, and the clamping plate is fixedly installed on the lifting seat.
Through with each first chuck integrated into one piece at the lower extreme of grip block for processing and the installation of first chuck are more convenient.
In some embodiments, the fourth floating assembly comprises a third spring limiting plate, a fourth guide post and a fifth spring, wherein the fourth guide post and the fifth spring are arranged in one-to-one correspondence with the second clamping head, and the fourth spring limiting plate comprises: the third spring limiting plates are fixedly arranged above the second chuck mounting seats, the upper ends of the fourth guide posts are slidably inserted into the third spring limiting plates, the lower ends of the fourth guide posts are slidably inserted into the second chuck mounting seats and downwards penetrate out of the second chuck mounting seats, the fifth springs are sleeved on the corresponding fourth guide posts, the upper ends of the fifth springs are abutted against the third spring limiting plates, and the lower ends of the fifth springs are abutted against the second chuck mounting seats; each second chuck is connected to the lower end of the corresponding fourth guide post.
The fourth floating assembly is simple in structure, and floating connection of the second chuck and the second chuck mounting seat is achieved through telescopic adjustment of the fifth spring.
In some embodiments, the welding strip clamping device further comprises a second self-adaptive adjusting component in one-to-one correspondence with the second chucks, the second self-adaptive adjusting component comprises a second spring seat and a sixth spring, wherein the second spring seat is fixedly installed on the second chuck installation seat, the middle part of each second chuck is fixedly connected to the lower end of the corresponding fourth guide post, the first end of the second chuck is used for clamping the welding strip in a matched mode with the corresponding first chuck, and the sixth spring is arranged between the second end of the second chuck and the corresponding second spring seat in a pressing mode.
Through setting up second self-adaptation adjusting part for the first end of second chuck can elasticity press on the first end of first chuck, makes the second chuck can be according to the welding strip by the thickness of centre gripping position realize self-adaptation rotation, guarantees that the first end of second chuck can implement the centre gripping to the welding strip of different thickness with the first end of first chuck, and the centre gripping of the welding strip that has the foreign matter on it.
In some embodiments, the clamping drive mechanism comprises a motor, a cam, a first cam follower, a second cam follower, and a seventh spring, wherein: the motor is arranged on the mounting bracket, and the cam is connected to the driving shaft of the motor; the first cam follower is connected to the first chuck mounting seat, the first cam follower is positioned on the first side of the cam, the second cam follower is connected to the second chuck mounting seat, and the second cam follower is positioned on the second side of the cam; the first end of the seventh spring is connected to the first chuck mounting seat, the second end of the seventh spring is connected to the second chuck mounting seat, and the seventh spring is used for pulling the first chuck mounting seat and the second chuck mounting seat towards the middle so that the first cam follower and the second cam follower are pressed against the cam; when the motor drives the cam to rotate, the first convex bearing follower and the second cam follower are driven to approach or separate, so that the first chuck mounting seat and the second chuck mounting seat are driven to approach towards the middle or separate towards two sides.
A clamping driving mechanism with simple structure is provided, and the clamping driving mechanism can drive a first chuck mounting seat and a second chuck mounting seat to be close to the middle or to be separated to two sides only through one motor.
In some embodiments, the bottom surface of the clamping end of the first chuck is a stepped surface, the stepped surface comprising a first bottom surface, a second bottom surface, and a side elevation, wherein the first bottom surface is lower than the second bottom surface, the side elevation being located between the first bottom surface and the second bottom surface; the clamping end of the second clamping head is provided with a bottom surface and a side end surface, the side end surface of the clamping end of the second clamping head is opposite to the side elevation of the first clamping head, and the side end surface of the clamping end of the second clamping head and the side elevation of the first clamping head are mutually close to or far away along with the relative movement of the first clamping head mounting seat and the second clamping head mounting seat so as to clamp or loosen the welding strip.
By setting the clamping end of the first clamping head and the clamping end of the second clamping head, the following can be realized: when the first chuck and the second chuck descend, the first bottom surface of the first chuck and/or the bottom surface of the clamping end of the second chuck can float upwards after contacting the battery piece, the height is consistent finally, a welding strip to be clamped enters between the side vertical surface of the first chuck and the side end surface of the second chuck, and then the first chuck and the second chuck are close to each other towards the middle, so that the side vertical surface of the first chuck and the side end surface of the second chuck are driven to clamp the welding strip smoothly.
The invention also provides a battery string repairing method, which has the following technical scheme:
a battery string repair method comprising:
cutting off a welding strip group between a defective battery piece and an adjacent battery piece in the battery string, and removing the defective battery piece to obtain a disassembled battery string with a disassembled end welding strip group;
feeding the replacement battery piece to a position where the defective battery piece is left after being removed, wherein the replacement battery piece is provided with a replacement welding strip group, and the replacement welding strip group corresponds to welding strips in the disassembly end welding strip group one by one;
and clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group through a welding strip clamping device, and connecting the overlapped welding strips through a connecting device, wherein the welding strip clamping device is any one of the welding strip clamping devices.
Because the first clamping head and/or the second clamping head can realize self-adaptive adjustment of the relative positions in the welding strip clamping process, the welding strip clamping device provided by the invention is used for clamping each welding strip in the replacement welding strip group and the corresponding welding strip in the disassembly end welding strip group, so that each welding strip in the replacement welding strip group and the corresponding welding strip in the disassembly end welding strip group can be clamped and lapped together smoothly, and the repair quality is finally ensured.
In some embodiments, clamping each weld band in the replacement weld band set with a corresponding each weld band in the disassembled end weld band set by the weld band clamping device comprises: clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group one by one through a welding strip clamping device; or simultaneously or alternately clamping and overlapping each welding strip in the replacement welding strip group with corresponding welding strips in the disassembly end welding strip group through a plurality of welding strip clamping devices.
And the welding strip clamping device is adopted to clamp and lap each welding strip in the replacement welding strip group and each corresponding welding strip in the disassembly end welding strip group one by one, so that the repair is flexible and the repair cost is low. And a plurality of welding strip clamping devices are adopted to simultaneously or alternately clamp and lap each welding strip in the replacement welding strip group and each corresponding welding strip in the disassembly end welding strip group, so that the clamping efficiency is improved, and the connecting device can continuously or synchronously connect the welding strips which are clamped and lapped, so that the repairing efficiency is improved.
In some embodiments, connecting the lapped solder strips by the connecting device comprises: the connecting device is a welding device, and the lapped welding strips are welded together through the welding device; or the connecting device is a gluing device, and the lapped welding strips are glued together through the gluing device; or the connecting device comprises a welding device and a gluing device, the lapped welding strips are welded together through the welding device, and glue is applied to the lap joint of the welding strips through the gluing device so as to bond the welded welding strips together.
The connecting device comprises a welding device and a gluing device, wherein the welding device is used for welding the two lapped welding strips, and the gluing device is used for gluing the two lapped welding strips, so that the two welding strips are doubly connected, and in the subsequent use process, even if the welding flux at the connecting position of the welding strips reaches a melting or semi-melting state due to the internal temperature rise of the photovoltaic module, the welding strips are still glued by glue, and therefore the welding strips cannot be separated from each other.
The invention also provides another battery string repairing method, which has the following technical scheme:
a battery string repair method comprising:
the exposed welding strips in the battery strings, which deviate from the main grid lines, are unwelded from the corresponding battery pieces;
clamping the exposed welding strip through a welding strip clamping device, and aligning the exposed welding strip on the main grid line through the welding strip clamping device; and welding the exposed welding strip on the main grid line.
The welding strip clamping device provided by the invention has the advantages that the first clamping head and/or the second clamping head can realize self-adaptive adjustment of the relative position in the welding strip clamping process, so that the welding strip clamping device can ensure that the welding strip clamping device can smoothly clamp the exposed welding strip so as to align the exposed welding strip on the main grid line, and finally, the exposed welding strip can be accurately welded on the main grid line, and the repair quality is improved.
In some embodiments, the battery string repair method further comprises, prior to welding the open solder strip to the main grid line: the exposed welding strip is pressed on the main grid line through the pressing needle, and the pressing needle and the welding strip clamping device are respectively positioned at two sides of the position to be welded of the exposed welding strip.
The exposed welding strip is tightly pressed on the main grid line through the pressing needle, so that the exposed welding strip can be firmly welded on the main grid line, the occurrence of false welding is prevented, and the repair quality is further improved.
Drawings
Fig. 1 is a schematic structural view of a solder strip clamping device according to a first embodiment of the present invention at a first view angle;
FIG. 2 is a schematic view of a solder strip clamping device according to a first embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a schematic view of a solder strip clamping device according to a first embodiment of the present invention in a third view;
fig. 6 is a schematic structural view of a solder strip clamping device according to a first embodiment of the present invention at a fourth view angle;
FIG. 7 is a partial schematic view of a first chuck and a second chuck in a first embodiment of the invention;
FIG. 8 is a schematic view of a solder strip clamping device according to a second embodiment of the present invention at a first view angle;
FIG. 9 is a schematic view of a solder strip clamping device according to a second embodiment of the present invention at a second view angle;
fig. 10 is a schematic structural view of a solder strip clamping device according to a second embodiment of the present invention at a third view angle;
FIG. 11 is a cross-sectional view of C-C of FIG. 10;
fig. 12 is a schematic structural view of a solder strip clamping device according to a second embodiment of the present invention at a fourth view angle;
fig. 13 is a schematic structural view of a welding strip holder according to a second embodiment of the present invention at a fifth view angle;
FIG. 14 is a schematic diagram of a strap clamping device according to the present invention for clamping and overlapping two straps;
FIG. 15 is a schematic view showing the clamping of the solder strip by the solder strip clamping device according to the first embodiment;
fig. 1 to 15 include:
a mounting bracket 1;
a first chuck mounting base 2;
a second chuck mounting base 3;
clamping driving mechanism 4: a motor 41, a cam 42, a first cam follower 43, a second cam follower 44, a first transmission plate 45, a second transmission plate 46, a seventh spring 47;
the first chuck 5: a first bottom surface 51, a second bottom surface 52, a side elevation 53;
second chuck 6: a bottom surface 61 and a side elevation surface 62;
first floating assembly 7: a first spring limiting plate 71, a first guide post 72 and a first spring 73;
Second float assembly 8: a second spring limiting plate 81, a second guide post 82 and a second spring 83;
first adaptive adjustment assembly 9: a first spring seat 91, a third spring 92;
third floating assembly 10: a lifting seat 101 and a fourth spring 102;
fourth floating assembly 11: a third spring limit plate 111, a fourth guide post 112, and a fifth spring 113;
a clamping plate 12;
a second adaptive adjustment assembly 13: a second spring seat 131, a sixth spring 132;
a first slide rail 14;
a second slide rail 15;
the first welding strip 100, the second welding strip 200, the exposed welding strip 300 and the pressing needle 400;
a region A to be connected and a position B to be welded.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
In the process of repairing the battery string, when the welding is carried out, the welding strip on the replaced battery piece and the welding strip on the adjacent battery piece are required to be clamped together, and in the existing welding strip clamping device, two clamping heads for clamping the welding strip in a matched mode are fixedly arranged.
In order to solve the problems of the prior welding strip clamping device, the invention provides a welding strip clamping device, wherein two clamping heads arranged in pairs can automatically realize accurate matching so as to effectively clamp two welding strips to be overlapped, thereby ensuring the subsequent lap welding quality.
The ribbon clamping device provided by the invention will be exemplarily described by two embodiments.
First embodiment
As shown in fig. 1, the welding strip clamping device in this embodiment includes a mounting bracket 1, a first chuck mounting seat 2, a second chuck mounting seat 3, a clamping driving mechanism 4, a first chuck 5 and a second chuck 6 which are arranged in a pair, wherein:
the first chuck mounting seat 2 and the second chuck mounting seat 3 are both slidably mounted on the mounting bracket 1 and are both connected with the driving end of the clamping driving mechanism 4, and the clamping driving mechanism 4 is used for driving the first chuck mounting seat 2 and the second chuck mounting seat 3 to be close to the middle or to be separated from each other to two sides.
The first chuck 5 is arranged on the first chuck mount 2 and the second chuck 6 is arranged on the second chuck mount 3, wherein the first chuck 5 is configured to be capable of floating up and down with respect to the first chuck mount 2 and/or the second chuck 6 is configured to be capable of floating up and down with respect to the second chuck mount 3. That is, at least one of the first collet 5 and the second collet 6 is configured to be capable of floating up and down relative to the corresponding collet mount.
When the clamping driving mechanism 4 drives the first chuck mounting seat 2 and the second chuck mounting seat 3 to approach towards the middle, the first chuck 5 and the second chuck 6 are clamped to clamp the welding strip.
When the clamping driving mechanism 4 drives the first chuck mounting seat 2 and the second chuck mounting seat 3 to separate to two sides, the first chuck 5 and the second chuck 6 are opened to release the welding strip.
The welding strip clamping device in the embodiment is suitable for clamping a group of first welding strips and second welding strips on a battery piece, and comprises the following specific processes:
in the initial state, the first chuck 5 and the corresponding second chuck 6 are in an open state.
The position of the mounting bracket 1 is adjusted so that the clamping gap between the first and second clamps 5, 6 is aligned with the first and second weld straps to be lapped.
Then, the mounting bracket 1 is controlled to descend, and at least one of the first chuck 5 and the second chuck 6 is connected to the corresponding chuck mounting seat in a vertically floating manner, so that along with the descending of the mounting bracket 1, the lower ends of the first chuck 5 and the second chuck 6 are respectively finally abutted against the battery piece, namely, the alignment of the clamping ends of the first chuck 5 and the second chuck 6 is ensured; the first and second solder strips to be lapped enter the clamping gap between the first and second chucks 5 and 6.
Finally, the clamping driving mechanism 4 drives the first chuck mounting seat 2 and the second chuck mounting seat 3 to approach towards the middle, so as to drive the first chuck 5 and the second chuck 6 to clamp, and smooth clamping of the first welding strip and the second welding strip is realized.
Therefore, in the welding strip clamping device in this embodiment, at least one of the first chuck 5 and the second chuck 6 is connected to the corresponding chuck mounting seat in a vertically floating manner, so that the first chuck 5 and the second chuck 6 can realize adaptive adjustment of the relative positions in the height direction in the process of descending and clamping the welding strip. In this way, even if there is an assembly or manufacturing error between the first chuck 5 and the second chuck 6, accurate matching can be achieved to perform effective clamping of the butt welding strip, and finally, the subsequent lap welding quality is ensured.
As shown in fig. 1-4, in some alternative embodiments, the first collet 5 is floatably connected to the first collet mount 2 via a first float assembly 7 and/or the second collet 6 is floatably connected to the second collet mount 3 via a second float assembly 8. Preferably, the first chuck 5 and the second chuck 6 are configured to float up and down relative to the corresponding chuck mounting seats, so that the first chuck 5 and the second chuck 6 can implement position self-adaptive adjustment more flexibly in the process of pressing down the clamping welding strip, thereby ensuring accurate matching.
Optionally, the first floating assembly 7 includes a first spring limiting plate 71, a first guide post 72, and a first spring 73, wherein: the first spring limiting plate 71 is fixedly arranged above the first chuck mounting seat 2, the upper end of the first guide pillar 72 is slidably inserted into the first spring limiting plate 71, the lower end of the first guide pillar 72 is slidably inserted into the first chuck mounting seat 2 and downwards penetrates out of the first chuck mounting seat 2, the first spring 73 is sleeved on the first guide pillar 72, the upper end of the first spring 73 is abutted on the first spring limiting plate 71, and the lower end of the first spring 73 is abutted on the first chuck mounting seat 2; the first collet 5 is connected to the lower end of the first guide post 72.
Optionally, the second floating assembly 8 includes a second spring limiting plate 81, a second guide post 82, and a second spring 83, wherein: the second spring limiting plate 81 is fixedly arranged above the second chuck mounting seat 3, the upper end of the second guide pillar 82 is slidably inserted into the second spring limiting plate 81, the lower end of the second guide pillar 82 is slidably inserted into the second chuck mounting seat 3 and penetrates out of the second chuck mounting seat 3 downwards, the second spring 83 is sleeved on the second guide pillar 82, the upper end of the second spring 83 is abutted on the second spring limiting plate 81, and the lower end of the second spring 83 is abutted on the second chuck mounting seat 3; the second collet 6 is connected to the lower end of the second guide post 82.
When the mounting bracket 1 descends, under the telescopic adjustment of the first spring 73 and the second spring 83, the first chuck 5 and the second chuck 6 can finally elastically abut against the battery piece, so that the alignment of the clamping ends of the first chuck 5 and the second chuck 6 is ensured.
As shown in fig. 5 to 6, optionally, the welding strip clamping device in this embodiment further includes a first adaptive adjustment assembly 9, where the first adaptive adjustment assembly 9 includes a first spring seat 91 and a third spring 92, the first spring seat 91 is fixedly installed on the second chuck installation seat 3, the middle part of the second chuck 6 is fixedly connected to the lower end of the second guide post 82, the first end of the second chuck 6 is used to clamp the welding strip in cooperation with the corresponding first chuck 5, and the third spring 92 is press-installed between the second end of the second chuck 6 and the first spring seat 91.
Because the third spring 92 is pressed between the second end of the second chuck 6 and the first spring seat 91, when the clamping driving mechanism 4 drives the first chuck 5 and the second chuck 6 to clamp the welding strip, the first end of the second chuck 6 can rotate away from the first end of the first chuck 5 and compress the third spring 92 after receiving the reverse acting force of the welding strip, so that the first end of the second chuck 6 and the first end of the first chuck 5 can clamp the welding strip elastically, the first end of the first chuck 5 and the first end of the second chuck 6 can clamp the welding strip effectively with different thicknesses, and the compatibility of the welding strip clamping device in the embodiment is improved. In addition, in some cases, there may be foreign matters such as tin beads on the solder strip to be clamped, and in the case that there is a foreign matter on the solder strip, when the first end of the second chuck 6 clamps to the foreign matter, the second chuck 6 can also rotate in a self-adaptive manner, so as to implement effective clamping of the solder strip.
Optionally, as shown in fig. 7, the bottom surface of the clamping end of the first chuck 5 is a step surface, and the step surface includes a first bottom surface 51, a second bottom surface 52 and a side elevation 53, where the first bottom surface 51 is lower than the second bottom surface 52, and the side elevation 53 is located between the first bottom surface 51 and the second bottom surface 52; the clamping end of the second chuck 6 has a bottom surface 61 and a side end surface 62, the side end surface 62 of the clamping end of the second chuck 6 is opposite to the side elevation 53 of the first chuck 5, and the side end surface 62 of the clamping end of the second chuck 6 and the side elevation 53 of the first chuck 5 are moved toward or away from each other along with the relative movement of the first chuck mounting seat 2 and the second chuck mounting seat 3 to clamp or unclamp the solder strip.
By the above arrangement of the clamping ends of the first chuck 5 and the second chuck 6, when the first chuck 5 and the second chuck 6 descend, the first bottom surface 51 of the first chuck 5 and/or the bottom surface 61 of the clamping end of the second chuck 6 can float upwards after contacting the battery piece, and finally reach a height consistency, and the welding strip to be clamped enters between the side vertical surface 53 of the first chuck 5 and the side end surface 62 of the second chuck 6, and then the first chuck 5 and the second chuck 6 are close to each other towards the middle, so that the side vertical surface 53 of the first chuck 5 and the side end surface 62 of the second chuck 6 are driven to clamp the welding strip smoothly.
As shown in fig. 5, the clamping driving mechanism 4 in this embodiment includes a motor 41, a cam 42, a first cam follower 43, a second cam follower 44, and a seventh spring 47, wherein: the motor 41 is provided on the mounting bracket 1, and the cam 42 is connected to a drive shaft of the motor 41. A first cam follower 43 is attached to the first chuck mount 2, the first cam follower 43 being located on a first side of the cam 42, a second cam follower 44 being attached to the second chuck mount 3, the second cam follower 44 being located on a second side of the cam 42. A first end of a seventh spring 47 is connected to the first collet mount 2 and a second end of the seventh spring 47 is connected to the second collet mount 3, the seventh spring 47 being used to pull the first and second collet mounts 2, 3 towards the middle such that the first and second cam followers 43, 44 are pressed against the cam 42.
When the motor 41 drives the cam 42 to rotate, the first cam follower 43 and the second cam follower 44 are driven to approach or separate, so that the first chuck mounting seat 2 and the second chuck mounting seat 3 are driven to approach towards the middle or separate towards the two sides.
It can be seen that by setting the clamping driving mechanism 4, only one motor is required to be set, so that the first chuck mounting seat 2 and the second chuck mounting seat 3 can be driven to approach towards the middle or separate towards two sides, thereby reducing the structural complexity and cost of the clamping driving mechanism 4.
Optionally, the clamping driving mechanism 4 in this embodiment further includes a first transmission plate 45 and a second transmission plate 46, wherein: the first transmission plate 45 is fixed on the first chuck mounting seat 2, the first cam follower 43 is mounted on the first transmission plate 45, and the first end of the seventh spring 47 is connected to the first transmission plate 45; the second drive plate 46 is fixed to the second chuck mount 3, the second cam follower 44 is mounted to the second drive plate 46, and the second end of the seventh spring 47 is connected to the second drive plate 46.
Second embodiment
The ribbon clamping device in the first embodiment described above is provided with only one set of the first chuck and the second chuck, and therefore it can only perform clamping lap joint of a pair of the first ribbon and the second ribbon at a time.
The embodiment provides a welding strip clamping device with another structure, which can synchronously implement clamping lap joint of a plurality of pairs of first welding strips and second welding strips, so that the welding device can synchronously implement welding of the plurality of pairs of first welding strips and second welding strips, and the efficiency is improved.
As shown in fig. 8 to 11, the welding strip clamping device in this embodiment includes a mounting bracket 1, a first chuck mounting seat 2, a second chuck mounting seat 3, a clamping driving mechanism 4, at least two pairs of first chucks 5 and second chucks 6, wherein:
The first chuck mounting seat 2 and the second chuck mounting seat 3 are both slidably mounted on the mounting bracket 1 and are both connected with the driving end of the clamping driving mechanism 4, and the clamping driving mechanism 4 is used for driving the first chuck mounting seat 2 and the second chuck mounting seat 3 to be close to the middle or to be separated from each other to two sides. Optionally, the mounting bracket 1 is provided with a first slide rail 14 and a second slide rail 15 which are parallel, wherein the first chuck mounting seat 2 is slidably connected to the first slide rail 14, and the second chuck mounting seat 3 is slidably connected to the second slide rail 15.
The first chucks 5 are arranged side by side at intervals on the first chuck mount 2 and configured to be capable of floating up and down with respect to the first chuck mount 2, and/or the second chucks 5 are arranged side by side at intervals on the second chuck mount 3 and configured to be capable of floating up and down with respect to the second chuck mount 3. That is, at least one of the first collet 5 and the second collet 6 is configured to be capable of floating up and down relative to the corresponding collet mount.
When the clamping driving mechanism 4 drives the first chuck mounting seat 2 and the second chuck mounting seat 3 to approach towards the middle, each first chuck 5 and the corresponding second chuck 6 are clamped to clamp the welding strip.
When the clamping driving mechanism 4 drives the first chuck mounting seat 2 and the second chuck mounting seat 3 to separate towards two sides, each first chuck 5 and the corresponding second chuck 6 are opened to release the welding strip.
The welding strip clamping device in the embodiment can implement horizontal lap joint of at least two pairs of first welding strips and second welding strips on a battery piece, and the specific process is as follows:
in the initial state, each of the first chuck 5 and the second chuck 6 is in an open state.
Next, the position of the mounting bracket 1 is adjusted so that the clamping gaps between each set of the first and second chucks 5 and 6 are aligned with the corresponding pair of first and second bonding pads to be overlapped.
Then, the mounting bracket 1 is controlled to descend, and at least one of the first clamping head 5 and the second clamping head 6 is connected to the corresponding clamping head mounting seat in a vertically floating manner, so that along with the descending of the mounting bracket 1, the lower ends of the first clamping head 5 and the second clamping head 6 are finally abutted against the battery piece, and the clamping ends of the first clamping head 5 and the second clamping head 6 in each group are aligned. Each pair of the first and second bonding tapes enters the clamping gap between the corresponding first and second chucks 5, 6.
Finally, the clamping driving mechanism 4 drives the first chuck mounting seat 2 and the second chuck mounting seat 3 to approach towards the middle, so as to drive each group of the first chuck 5 and the second chuck 6 to synchronously clamp, and synchronously implement horizontal lap joint of each pair of the first welding strip and the second welding strip.
Therefore, the welding strip clamping device in the embodiment can synchronously implement the clamping lap joint of at least two pairs of the first welding strips and the second welding strips, so that the welding device can synchronously or continuously implement the lap joint welding of at least two pairs of the first welding strips and the second welding strips, and the welding efficiency is improved.
When the welding strip clamping device of the embodiment is applied to the repair of the battery string, the number of the first clamping heads and the second clamping heads can be optionally set to be equal to the number of the welding strips cut off on the adjacent battery piece or the welding strips on the replacement battery piece. Therefore, the welding strip clamping device can clamp all welding strips on the adjacent battery piece and the replacement battery piece simultaneously, so that the welding device can continuously or synchronously finish lap welding of all the welding strips, and the repair efficiency is further improved.
As shown in fig. 8, optionally, each first chuck 5 is floatably connected to the first chuck mounting base 2 via a third floating assembly 10, and/or each second chuck 6 is floatably connected to the second chuck mounting base 3 via a fourth floating assembly 11. Preferably, each first chuck 5 and each second chuck 6 are configured to float up and down relative to the corresponding chuck mounting seat, so that the first chuck 5 and the second chuck 6 can implement position self-adaptive adjustment more flexibly in the process of pressing down and clamping the welding strip, thereby ensuring that each group of the first chuck 5 and the second chuck 6 can be accurately matched.
As shown in fig. 8, the third floating assembly 10 includes a lifting base 101, a third guide post, and a fourth spring 102, wherein: the upper end of the third guide pillar is fixedly connected to the first chuck mounting seat 2, the lower end of the third guide pillar is slidably connected to the lifting seat 101, the fourth spring 102 is sleeved on the third guide pillar, the upper end of the fourth spring 102 is abutted to the first chuck mounting seat 2, and the lower end of the fourth spring 102 is abutted to the lifting seat 101. The first chucks 5 are mounted on the lifting base 101 together, and the clamping ends of the first chucks 5 extend downward from the lifting base 101, that is, the first chucks 5 float synchronously with the lifting base 101.
Optionally, in order to facilitate the processing and installation of the first chuck 5, the welding strip clamping device in this embodiment further includes a clamping plate 12, all the first chucks 5 are integrally formed at the lower end of the clamping plate 12, and the clamping plate 12 is fixedly installed on the lifting seat 101.
As shown in fig. 8, 10 and 11, the fourth floating assembly 11 includes a third spring limiting plate 111, a fourth guide post 112 and a fifth spring 113, which are disposed in one-to-one correspondence with the second clamping head, wherein: the third spring limiting plates 111 are fixedly arranged above the second chuck mounting seats 3, the upper ends of the fourth guide posts 112 are slidably inserted into the third spring limiting plates 111, the lower ends of the fourth guide posts 112 are slidably inserted into the second chuck mounting seats 3 and penetrate out of the second chuck mounting seats 3 downwards, the fifth springs 113 are sleeved on the corresponding fourth guide posts 112, the upper ends of the fifth springs 113 are abutted to the third spring limiting plates 111, and the lower ends of the fifth springs 113 are abutted to the second chuck mounting seats 3. Each second chuck 6 is connected to the lower end of the corresponding fourth guide post, that is, each second chuck 5 can float independently along with the corresponding fourth guide post.
As shown in fig. 13, optionally, the welding strip clamping device in this embodiment further includes a second adaptive adjustment assembly 13 corresponding to the second chucks 6 one by one, where the second adaptive adjustment assembly 13 includes a second spring seat 131 and a sixth spring 132, the second spring seat 131 is fixedly installed on the second chuck installation seat 3, a middle portion of each second chuck 6 is fixedly connected to a lower end of the corresponding fourth guide post 112, a first end of the second chuck 6 is used to cooperate with the corresponding first chuck 5 to clamp the welding strip, and the sixth spring 132 is press-installed between the second end of the second chuck 6 and the corresponding second spring seat 131.
Because the sixth spring 132 is pressed between the second end of each second chuck 6 and the corresponding second spring seat 131, when the clamping driving mechanism 4 drives each group of the first chucks 5 and the second chucks 6 to clamp the solder strip synchronously, the first ends of each second chuck 6 can rotate away from the first ends of the corresponding first chucks 5 after receiving the reverse acting force of the solder strip, so that the first ends of each second chuck 6 and the first ends of the corresponding first chucks 5 can elastically clamp the corresponding solder strip, thereby enabling the first ends of the first chucks 5 and the first ends of the second chucks 6 to implement effective clamping of solder strips with different thicknesses, and improving the compatibility of the solder strip clamping device in the embodiment. In addition, in some cases, in each butt welding belt to be clamped, there may be foreign matters such as tin beads on a certain butt welding belt, and when the first end of the second chuck 6 clamps the foreign matters on the welding belt, the second chuck 6 can also adaptively rotate to implement effective clamping of the butt welding belt, so that each butt welding belt can be ensured to be clamped effectively.
Alternatively, the structure of the clamping ends of the first chuck 5 and the second chuck 6 of the welding strip clamping device in this embodiment is set to be the same as the clamping ends of the first chuck 5 and the second chuck 6 in the first embodiment shown in fig. 7. For the specific structure and the clamping process of the butt welding belt, please refer to the related description of the first embodiment, and the description is omitted here.
As shown in fig. 12, alternatively, as in the first embodiment, the clamp driving mechanism 4 in this embodiment includes a motor 41, a cam 42, a first cam follower 43, a second cam follower 44, and a seventh spring 47, wherein: the motor 41 is provided on the mounting bracket 1, and the cam 42 is connected to a drive shaft of the motor 41. A first cam follower 43 is attached to the first chuck mount 2, the first cam follower 43 being located on a first side of the cam 42, a second cam follower 44 being attached to the second chuck mount 3, the second cam follower 44 being located on a second side of the cam 42. A first end of a seventh spring 47 is connected to the first collet mount 2 and a second end of the seventh spring 47 is connected to the second collet mount 3, the seventh spring 47 being used to pull the first and second collet mounts 2, 3 towards the middle such that the first and second cam followers 43, 44 are pressed against the cam 42.
When the motor 41 drives the cam 42 to rotate, the first cam follower 43 and the second cam follower 44 are driven to approach or separate, so that the first chuck mounting seat 2 and the second chuck mounting seat 3 are driven to approach towards the middle or separate towards the two sides.
It can be seen that by setting the clamping driving mechanism 4, only one motor is required to be set, so that the first chuck mounting seat 2 and the second chuck mounting seat 3 can be driven to approach towards the middle or separate towards two sides, thereby reducing the structural complexity and cost of the clamping driving mechanism.
Optionally, the clamping driving mechanism 4 in this embodiment further includes a first transmission plate 45 and a second transmission plate 46, wherein: the first transmission plate 45 is fixed on the first chuck mounting seat 2, the first cam follower 43 is mounted on the first transmission plate 45, and the first end of the seventh spring 47 is connected to the first transmission plate 45; the second drive plate 46 is fixed to the second chuck mount 3, the second cam follower 44 is mounted to the second drive plate 46, and the second end of the seventh spring 47 is connected to the second drive plate 46.
The invention also provides a battery string repairing method, which comprises the following steps:
s1, cutting off a weld group between a defective battery piece and an adjacent battery piece in the battery string, and removing the defective battery piece to obtain a disassembled battery string with a disassembled end weld group.
S2, feeding the replacement battery piece to a position where the defective battery piece is left after being removed, wherein the replacement battery piece is provided with a replacement welding strip group, and the replacement welding strip group corresponds to welding strips in the disassembly end welding strip group one by one.
S3, clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group through a welding strip clamping device, and connecting the overlapped welding strips through a connecting device, wherein the welding strip clamping device is any welding strip clamping device provided by any one of the first embodiment and the second embodiment of the invention.
Because the welding strip clamping device provided by the embodiment of the invention has the advantages that the first clamping head and/or the second clamping head can realize the self-adaptive adjustment of the relative positions in the welding strip clamping process, the welding strips in the replacement welding strip group and the corresponding welding strips in the disassembly end welding strip group can be ensured to be smoothly lapped together, and the repair quality is ensured.
As shown in fig. 14, when the welding strip clamping device of the present invention is used to lap the first welding strip 100 in the replacement welding strip set and the second welding strip 200 in the disassembly welding strip set, the first chuck 5 and the second chuck 6 of the welding strip clamping device clamp only the free end of one of the first welding strip 100 and the second welding strip 200, for example, the free end of the first welding strip 100 is clamped in fig. 14, and after clamping, the free end of the second welding strip 200 overlaps the first welding strip 100, so that a part of the overlapping position of the second welding strip 200 and the first welding strip 100 is exposed outside the first chuck 5 and the second chuck 6, namely, the to-be-connected area a in fig. 14, so that the external connecting device can directly perform corresponding connection operation on the to-be-connected area a without setting a relief hole for avoiding the connecting device on the first chuck 5 and the second chuck 6.
Alternatively, the clamping operation of the welding strip in step S3 is performed by any one of the welding strip clamping devices of the first embodiment of the present invention, and since the welding strip clamping device is provided with only one set of the first chuck and the second chuck, it can perform only the clamping lap of the welding strip to be lap-welded one at a time.
Therefore, in step S3, each welding strip in the replacement welding strip set and each corresponding welding strip in the disassembly end welding strip set are clamped and lapped together by the welding strip clamping device, specifically:
and clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group one by one through a welding strip clamping device.
That is, the clamping operation and the connecting operation are alternately performed, and the connecting device immediately performs the connection of the two clamped welding strips to be connected after the welding strip clamping device clamps one welding strip in the replacement welding strip group and one corresponding welding strip in the disassembly welding strip group. Then, the welding strip clamping device releases the two welding strips which are well overlapped, clamping and overlapping are carried out on the other two welding strips, the connecting device immediately carries out connection on the other two welding strips to be connected which are clamped, and the steps are repeated until each welding strip in the replacement welding strip group is connected with each corresponding welding strip in the disassembly end welding strip group.
In addition, in order to improve the connection efficiency, in step S3, each welding strip in the replacement welding strip set and each corresponding welding strip in the disassembly end welding strip set are clamped and lapped together by a welding strip clamping device, specifically:
and simultaneously or alternately clamping and overlapping each welding strip in the replacement welding strip group with corresponding welding strips in the disassembly end welding strip group through a plurality of welding strip clamping devices.
Optionally, in step S3, the lapped welding strip is connected through a connecting device, specifically:
the connecting device is a welding device and a gluing device, the lapped welding strips are welded together through the welding device, and glue is applied to the lapped positions of the welding strips through the gluing device so as to bond the welded welding strips together. Namely, each welding strip in the replacement welding strip group and each corresponding welding strip in the disassembly end welding strip group are connected in double by welding and cementing. In this way, even if the solder at the connecting position of the two connected solder strips reaches a molten or semi-molten state due to the temperature rise inside the photovoltaic module in the subsequent use process, the two solder strips cannot be separated from each other due to the fact that the solder strips are simultaneously bonded by the glue stock.
Of course, if the melting point of the solder on the solder strip is higher, the internal temperature rise of the photovoltaic module will not cause the solder at the connection position of the solder strip to melt, and the connection of the lapped solder strip through the connection device in step S3 may also be: the connecting device is a welding device, and the lapped welding strips are welded together through the welding device. Or, when the adhesive is sufficient to achieve stable connection of the two welding strips, the step S3 of connecting the lapped welding strips by the connecting device may also be: the connecting device is a gluing device, and the lapped welding strips are glued together through the gluing device.
The invention also provides a battery string repairing method, which comprises the following steps:
s10, the exposed welding strips in the battery strings, which deviate from the main grid lines, are unwelded from the corresponding battery pieces, and in order to improve the efficiency, only the exposed welding points are unwelded, and the unwelded welding points without exposed welding points are not needed.
S20, clamping the exposed welding strip through a welding strip clamping device, and aligning the exposed welding strip on the main grid line through the welding strip clamping device, wherein the welding strip clamping device is provided by any one of the first embodiment of the invention.
S40, welding the exposed welding strips on the main grid line.
The welding strip clamping device provided by the invention has the advantages that the first clamping head and the second clamping head can realize self-adaptive adjustment of the relative positions in the welding strip clamping process. Therefore, the device can be used for smoothly clamping the white solder strip so as to align the white solder strip on the main grid line, and finally, the white solder strip can be accurately welded on the main grid line, and the repair quality is ensured.
Optionally, before the step S40 of welding the open solder strip on the main grid, the battery string repairing method of the present invention further includes the steps of:
s30: the exposed welding strip is pressed on the main grid line through the pressing needle, and the pressing needle and the welding strip clamping device are respectively positioned at two sides of the position to be welded of the exposed welding strip.
The exposed welding strip is tightly pressed on the main grid line through the pressing needle, so that the exposed welding strip can be firmly welded on the main grid line, the occurrence of false welding is prevented, and the repair quality is further improved.
As shown in fig. 15, the open solder strip 300 is clamped by the solder strip clamping device in the first embodiment, after the open solder strip 300 is clamped by the first chuck 5 and the second chuck 6 of the solder strip clamping device from one side and the position of the open solder strip 300 is adjusted, the open solder strip 300 is pressed by the pressing needle 400 from the other side, the position B to be welded is located between the solder strip clamping device and the pressing needle 400, and the external welding device can directly perform the welding operation on the position B to be welded.
The invention has been described above in sufficient detail with a certain degree of particularity. It will be appreciated by those of ordinary skill in the art that the descriptions of the embodiments are merely exemplary and that all changes that come within the true spirit and scope of the invention are desired to be protected. The scope of the invention is indicated by the appended claims rather than by the foregoing description of the embodiments.

Claims (17)

1. The utility model provides a welding strip clamping device which characterized in that, welding strip clamping device includes installing support, first chuck mount pad, second chuck mount pad, centre gripping actuating mechanism, at least a set up first chuck and the second chuck to the setting, wherein:
The first chuck mounting seat and the second chuck mounting seat are both slidably mounted on the mounting bracket and are both connected with the driving end of the clamping driving mechanism, and the clamping driving mechanism is used for driving the first chuck mounting seat and the second chuck mounting seat to be close to each other towards the middle or separated from each other towards two sides;
the first chuck is arranged on the first chuck mounting seat, the second chuck is arranged on the second chuck mounting seat, wherein the first chuck is configured to be capable of floating up and down relative to the first chuck mounting seat, and/or the second chuck is configured to be capable of floating up and down relative to the second chuck mounting seat;
the clamping driving mechanism drives the first chuck mounting seat and the second chuck mounting seat to draw close to the middle, and the first chuck and the corresponding second chuck are clamped to clamp the welding strip;
when the clamping driving mechanism drives the first chuck mounting seat and the second chuck mounting seat to separate towards two sides, the first chuck and the corresponding second chuck are opened to release the welding strip.
2. The welding-ribbon clamping device of claim 1 wherein the welding-ribbon clamping device includes a set of the first collet and the second collet;
The first chuck can be connected to the first chuck mounting seat in an up-and-down floating manner through a first floating assembly; and/or
The second chuck is connected to the second chuck mounting seat in an up-and-down floating manner through a second floating assembly.
3. The solder strip clamping device of claim 2, wherein the first floating assembly comprises a first spring retainer plate, a first guide post, and a first spring, wherein:
the first spring limiting plate is fixedly arranged above the first chuck mounting seat, the upper end of the first guide pillar is in sliding connection with the first spring limiting plate, the lower end of the first guide pillar is in sliding connection with the first chuck mounting seat and penetrates out of the first chuck mounting seat downwards, the first spring is sleeved on the first guide pillar, the upper end of the first spring is abutted to the first spring limiting plate, and the lower end of the first spring is abutted to the first chuck mounting seat;
the first chuck is connected to the lower end of the first guide post.
4. The solder strip clamping device of claim 2, wherein the second floating assembly comprises a second spring retainer plate, a second guide post, and a second spring, wherein:
The second spring limiting plate is fixedly arranged above the second chuck mounting seat, the upper end of the second guide post is slidably inserted into the second spring limiting plate, the lower end of the second guide post is slidably inserted into the second chuck mounting seat and downwards penetrates out of the second chuck mounting seat, the second spring is sleeved on the second guide post, the upper end of the second spring is abutted to the second spring limiting plate, and the lower end of the second spring is abutted to the second chuck mounting seat;
the second chuck is connected to the lower end of the second guide post.
5. The solder strip holding device according to claim 4, wherein:
the welding strip clamping device further comprises a first self-adaptive adjusting assembly, wherein the first self-adaptive adjusting assembly comprises a first spring seat and a third spring, and the first spring seat is fixedly arranged on the second chuck mounting seat; the middle part of the second chuck is fixedly connected to the lower end of the second guide post, the first end of the second chuck is used for clamping the welding strip in a matched mode with the corresponding first chuck, and the third spring is arranged between the second end of the second chuck and the first spring seat in a pressing mode.
6. The welding-ribbon clamping device of claim 1 wherein the welding-ribbon clamping device includes at least two sets of the first collet and the second collet, wherein:
each first chuck is arranged side by side at intervals and can be connected to the first chuck mounting seat in an up-down floating manner through a third floating assembly; and/or
The second chucks are arranged side by side at intervals and can be connected to the second chuck mounting seat in an up-and-down floating manner through a fourth floating assembly.
7. The ribbon clamping device of claim 6 wherein the third floating assembly comprises a lift base, a third guide post, and a fourth spring, wherein:
the upper end of the third guide post is fixedly connected to the first chuck mounting seat, the lower end of the third guide post is slidably connected to the lifting seat, the fourth spring is sleeved on the third guide post, the upper end of the fourth spring is abutted to the first chuck mounting seat, and the lower end of the fourth spring is abutted to the lifting seat;
the first chucks are jointly installed on the lifting seat, and the clamping ends of the first chucks extend out of the lifting seat downwards.
8. The welding-strip holding device as defined in claim 7, further comprising holding plates, each of said first chucks being integrally formed at a lower end of said holding plate, said holding plates being fixedly mounted on said lifting base.
9. The strap gripping apparatus of claim 6 wherein the fourth floating assembly includes a third spring retainer plate, a fourth guide post and a fifth spring disposed in one-to-one correspondence with the second clip head, wherein:
the third spring limiting plates are fixedly arranged above the second chuck mounting seats, the upper ends of the fourth guide posts are slidably inserted into the third spring limiting plates, the lower ends of the fourth guide posts are slidably inserted into the second chuck mounting seats and penetrate through the second chuck mounting seats downwards, the fifth springs are sleeved on the corresponding fourth guide posts, the upper ends of the fifth springs are abutted to the third spring limiting plates, and the lower ends of the fifth springs are abutted to the second chuck mounting seats;
each second chuck is connected to the lower end of the corresponding fourth guide post.
10. The solder strip holding device as in claim 9, wherein:
the welding strip clamping device further comprises second self-adaptive adjusting components in one-to-one correspondence with the second chucks, each second self-adaptive adjusting component comprises a second spring seat and a sixth spring, the second spring seats are fixedly arranged on the second chuck mounting seats, the middle parts of the second chucks are fixedly connected to the lower ends of the corresponding fourth guide posts, the first ends of the second chucks are used for clamping welding strips in a matched mode with the corresponding first chucks, and the sixth springs are arranged between the second ends of the second chucks and the corresponding second spring seats in a pressing mode.
11. The welding-ribbon clamping device of claim 1 wherein the clamping drive mechanism includes a motor, a cam, a first cam follower, a second cam follower, and a seventh spring, wherein:
the motor is arranged on the mounting bracket, and the cam is connected to a driving shaft of the motor;
the first cam follower is connected to the first chuck mounting seat, the first cam follower is positioned on a first side of the cam, the second cam follower is connected to the second chuck mounting seat, and the second cam follower is positioned on a second side of the cam;
a first end of the seventh spring is connected to the first chuck mounting seat, a second end of the seventh spring is connected to the second chuck mounting seat, and the seventh spring is used for pulling the first chuck mounting seat and the second chuck mounting seat towards the middle so that the first cam follower and the second cam follower are pressed against the cam;
and the motor drives the cam to rotate so as to drive the first cam follower and the second cam follower to approach or separate from each other, thereby driving the first chuck mounting seat and the second chuck mounting seat to approach to the middle or separate from each other to the two sides.
12. The solder strip holding device according to claim 1, wherein:
the bottom surface of the clamping end of the first clamping head is a stepped surface, and the stepped surface comprises a first bottom surface, a second bottom surface and a side elevation, wherein the first bottom surface is lower than the second bottom surface, and the side elevation is positioned between the first bottom surface and the second bottom surface;
the clamping end of the second clamping head is provided with a bottom surface and a side end surface, the side end surface of the clamping end of the second clamping head is opposite to the side elevation of the first clamping head, and the side end surface of the clamping end of the second clamping head and the side elevation of the first clamping head are close to or far away from each other along with the relative movement of the first clamping head mounting seat and the second clamping head mounting seat so as to clamp or loosen the welding strip.
13. The battery string repairing method is characterized by comprising the following steps of:
cutting off a weld band group between a defective battery piece and an adjacent battery piece in the battery string, and removing the defective battery piece to obtain a disassembled battery string with a disassembled end weld band group;
feeding a replacement battery piece to a position where the defective battery piece is left after being removed, wherein the replacement battery piece is provided with a replacement welding strip group, and the replacement welding strip group corresponds to welding strips in the disassembly end welding strip group one by one;
And clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group through a welding strip clamping device, and connecting the overlapped welding strips through a connecting device, wherein the welding strip clamping device is a welding strip clamping device according to any one of claims 1 to 12.
14. The battery string repair method of claim 13, wherein: the welding strip clamping device is the welding strip clamping device according to any one of claims 2 to 5;
the welding strips in the replacement welding strip set and the corresponding welding strips in the disassembly end welding strip set are clamped and lapped together through the welding strip clamping device, and the welding strip clamping device comprises:
clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group one by one through one welding strip clamping device; or alternatively
And simultaneously or alternately clamping and overlapping each welding strip in the replacement welding strip group with each corresponding welding strip in the disassembly end welding strip group through a plurality of welding strip clamping devices.
15. The battery string repair method of claim 13, wherein: the welding strip connected with the connecting device in a lap joint manner comprises:
The connecting device is a welding device, and the lapped welding strips are welded together through the welding device; or alternatively, the process may be performed,
the connecting device is a glue applying device, and the lapped welding strips are bonded together through glue by the glue applying device; or alternatively, the process may be performed,
the connecting device comprises a welding device and a gluing device, wherein the welding device is used for welding the lapped welding strips together, and the gluing device is used for gluing the lapped welding strips to the lapped positions of the welding strips so as to bond the welded welding strips together.
16. The battery string repairing method is characterized by comprising the following steps of:
the exposed welding strips in the battery strings, which deviate from the main grid lines, are unwelded from the corresponding battery pieces;
clamping the exposed solder strip by a solder strip clamping device and aligning the exposed solder strip on the main grid line by the solder strip clamping device, wherein the solder strip clamping device is the solder strip clamping device according to any one of claims 2 to 5;
and welding the white solder strip on the main grid line.
17. The battery string repair method of claim 16, wherein the battery string repair method further comprises, prior to welding the open solder strip to the main grid line:
The exposed welding strip is pressed on the main grid line through the pressing needle, and the pressing needle and the welding strip clamping device are respectively positioned at two sides of the position to be welded of the exposed welding strip.
CN202310094789.0A 2023-02-10 2023-02-10 Welding strip clamping device and battery string repairing method Pending CN116140898A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116525531A (en) * 2023-07-05 2023-08-01 深圳光远智能装备股份有限公司 Clamping mechanism and series welding device applied to high-density welding strip of battery piece
CN117293231A (en) * 2023-11-24 2023-12-26 天合光能股份有限公司 Battery string repairing method, preparation method of replacement battery string and battery string

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116525531A (en) * 2023-07-05 2023-08-01 深圳光远智能装备股份有限公司 Clamping mechanism and series welding device applied to high-density welding strip of battery piece
CN116525531B (en) * 2023-07-05 2023-09-15 深圳光远智能装备股份有限公司 Clamping mechanism and series welding device applied to high-density welding strip of battery piece
CN117293231A (en) * 2023-11-24 2023-12-26 天合光能股份有限公司 Battery string repairing method, preparation method of replacement battery string and battery string
CN117293231B (en) * 2023-11-24 2024-06-21 天合光能股份有限公司 Battery string repairing method, preparation method of replacement battery string and battery string

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