CN110253132B - Power battery tab welding device and method - Google Patents

Power battery tab welding device and method Download PDF

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Publication number
CN110253132B
CN110253132B CN201910603172.0A CN201910603172A CN110253132B CN 110253132 B CN110253132 B CN 110253132B CN 201910603172 A CN201910603172 A CN 201910603172A CN 110253132 B CN110253132 B CN 110253132B
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tab
welding
electric core
naked electric
positioning
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CN110253132A (en
Inventor
朱琳
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Huizhou Jieyou Industrial Co.,Ltd.
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Huizhou Jieyou Industrial Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/002Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/26Auxiliary equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/36Electric or electronic devices
    • B23K2101/38Conductors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention provides a welding device and a method for a lug of a power battery, which relate to the field of new energy power batteries and consist of a naked cell feeding robot, a naked cell double sucker, a naked cell rotary disc feeding module, an ultrasonic welding machine, a camera bracket, a CCD camera, a Tab rotary disc feeding module, a Tab feeding robot and a Tab double sucker, wherein the Tab rotary disc feeding module comprises a central rotary cylinder, a Tab rotary disc, a linear slide rail, an anode Tab, a cathode Tab, a Tab positioning mechanism, a Tab height positioning mechanism and a Tab center distance positioning mechanism, the invention skillfully adopts the rotary disc feeding and the Tab positioning mechanism, only needs to position the naked cell once, and axially and radially and synchronously rectify the deviation of the anode Tab and the cathode Tab, so that the synchronous welding of the anode Tab and the cathode Tab at the same station can be realized, and the problems of Tab-lead center distance and Tab-lead height of the lug ultrasonic welding are solved, and greatly improve utmost point ear ultrasonic welding efficiency, overcome current utmost point ear ultrasonic welding process steps loaded down with trivial details problem.

Description

Power battery tab welding device and method
Technical Field
The invention relates to the field of new energy power batteries, in particular to a device and a method for welding tabs of a power battery.
Background
Under the conditions of petroleum shortage and air pollution aggravation, the nation proposes a new energy strategy and vigorously supports the development of the new energy power battery industry. The power battery is applied to new energy automobiles, and electricity is used for replacing petroleum to provide power for the automobiles, so that zero emission and zero pollution are realized. At present, power batteries are divided into hard-shell power batteries and soft-package power batteries, and the soft-package power batteries are rapidly developed due to higher energy density. The soft package power battery is divided into an M6U structure and an M6T structure and mainly comprises a bare cell, a positive electrode Tab, a negative electrode Tab and an aluminum-plastic film Pocket, wherein the positive electrode Tab and a bare electrode cathode Al Tab are welded together, the negative electrode Tab and a bare electrode anode Cu Tab are welded together, and the purpose is to lead out the positive electrode and the negative electrode.
At present, according to an ultrasonic welding process of a soft package power battery Tab, a bare battery core needs to be positioned twice, a positive electrode Tab is positioned and welded for the first time, a negative electrode Tab is positioned and welded for the second time, and error accumulation easily causes Tab-lead center distance NG and Tab-lead height NG. The Tab-lead center distance NG means that the center distance between the positive electrode Tab and the negative electrode Tab exceeds the specification, further the problems of unobvious top seal groove position printing and Tab position printing pressing are caused, and the battery cell has serious liquid leakage and corrosion risks; the Tab-lead height NG means that the height of the positive electrode Tab and the negative electrode Tab exposed outside the aluminum plastic film Pocket exceeds the specification, so that the cell size is NG and the cell is discarded, and the Tab-lead means the positive electrode Tab and the negative electrode Tab. The invention skillfully adopts a turntable feeding and Tab positioning mechanism, only once positioning of a naked battery core is needed, and synchronous welding of the positive electrode Tab and the negative electrode Tab at the same station can be realized by synchronously correcting the axial direction and the radial direction of the positive electrode Tab and the negative electrode Tab, so that the problems of center distance NG and Tab-lead height NG of Tab ultrasonic welding are solved, the Tab ultrasonic welding efficiency is greatly improved, and the conventional power battery Tab welding device and method are not available in the market. The parameters of the Tab positioning mechanism directly influence the process efficiency and the goodness, and the research and development of the Tab positioning mechanism play a crucial role in the development of the field of new energy power batteries.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a power battery Tab welding device and a power battery Tab welding method, wherein a turntable feeding and Tab positioning mechanism is skillfully adopted, and the positive electrode Tab and the negative electrode Tab can be synchronously welded at the same station by only once positioning of a bare cell and synchronous axial and radial deviation correction of the positive electrode Tab and the negative electrode Tab, so that the problems of Tab-lead center distance NG and Tab-lead height NG in Tab ultrasonic welding are solved, the Tab ultrasonic welding efficiency is greatly improved, and the problem of complicated steps in the conventional Tab ultrasonic welding process is solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a power battery Tab welding device is composed of a naked battery cell feeding robot, a naked battery cell double-sucker, a naked battery cell rotary disc feeding module, an ultrasonic welding machine, a camera support, a first CCD camera, a second CCD camera, a Tab rotary disc feeding module, a Tab feeding robot and a Tab double-sucker, wherein the naked battery cell rotary disc feeding module comprises a central servo motor, a naked battery cell rotary disc, a naked battery cell, a tray mounting groove, a naked battery cell tray and a sucker; the ultrasonic welding machine comprises a welding machine base, a welding base, a negative welding head, a positive welding head, a welding head mounting base, a lifting arm and a welding base mounting base; the Tab turntable feeding module comprises a central rotary cylinder, a Tab turntable, a linear slide rail, an anode Tab, a cathode Tab and a Tab positioning mechanism; the Tab positioning mechanism comprises a Tab height positioning mechanism and a Tab center distance positioning mechanism; the Tab height positioning mechanism comprises a push rod, a base, a nut slide block, a servo motor, a lead screw and a slide block bracket; tab centre-to-centre spacing positioning mechanism includes Tab base, anodal Tab mounting groove, anodal sucking disc, regulation clearance, negative pole Tab mounting groove, negative pole sucking disc, centre-to-centre spacing pointer, scale, miniature servo motor and clearance adjustment lead screw, characterized by: naked electric core double suction disc is installed at naked electric core material loading robot end naked electric core carousel material loading module sets up between naked electric core material loading robot and ultrasonic welding machine, the ultrasonic welding machine top is provided with the camera support, a CCD camera and No. two CCD cameras are installed to camera support end, Tab carousel material loading module sets up between naked electric core carousel material loading module and Tab material loading robot, Tab material loading robot end is installed the two sucking discs of Tab.
Preferably, naked electric core carousel material loading module includes central servo motor, naked electric core carousel, naked electric core, tray mounting groove, naked electric core tray and sucking disc, central servo motor is connected with the pivot of naked electric core carousel, naked electric core carousel is provided with 5 tray mounting grooves, is the circumference and distributes, naked electric core tray is installed in the tray mounting groove, the inside sucking disc that is provided with of naked electric core tray, naked electric core is placed in naked electric core tray.
Preferably, ultrasonic welding machine includes welding machine base, welding seat, negative pole bonding tool, anodal bonding tool, bonding tool mount pad, lift arm and welding seat mount pad, the welding seat sets up on the welding seat mount pad, the welding seat mount pad sets up on the welding machine base, negative pole bonding tool and anodal bonding tool set up in bonding tool mount pad lower part, the bonding tool mount pad sets up on the lift arm, the lift arm sets up inside the welding seat mount pad.
Preferably, the Tab turntable feeding module comprises a central rotary cylinder, a Tab turntable, linear slide rails, an anode Tab, a cathode Tab and a Tab positioning mechanism, the central rotary cylinder is connected with a rotating shaft of the Tab turntable, the linear slide rails are mounted at two ends of the Tab turntable, the Tab positioning mechanism comprises a Tab height positioning mechanism and a Tab center distance positioning mechanism, the Tab height positioning mechanism is mounted on the Tab turntable and connected with the Tab center distance positioning mechanism, the Tab center distance positioning mechanism is mounted on the linear slide rails, and the anode Tab and the cathode Tab are placed on the Tab center distance positioning mechanism; the Tab height positioning mechanism comprises a push rod, a base, a nut slider, a servo motor, a lead screw and a slider bracket, one end of the push rod is connected with the Tab center distance positioning mechanism, the other end of the push rod is connected with the base, the middle part of the push rod penetrates through a front vertical plate of the slider bracket, the base is arranged on the nut slider, the middle part of the nut slider is connected with the lead screw, the two ends of the nut slider are connected with the slider bracket in a sliding manner, one end of the lead screw is arranged on the slider bracket, the other end of the lead screw is connected with the servo motor through a; the Tab center distance positioning mechanism comprises a Tab base, an anode Tab mounting groove, an anode sucker, an adjusting gap, a cathode Tab mounting groove, a cathode sucker, a center distance pointer, a scale, a micro servo motor and a gap adjusting screw rod, wherein the bottom of the Tab base is connected with a linear slide rail, the inner surface of the anode Tab mounting groove is provided with the anode sucker, the anode Tab is placed in the anode Tab mounting groove, the adjusting gap is arranged between the anode Tab mounting groove and the cathode Tab mounting groove, the inner surface of the cathode Tab mounting groove is provided with the cathode sucker, the cathode Tab is placed in the cathode Tab mounting groove, the bottom of the cathode Tab mounting groove is connected with the gap adjusting screw rod, one end of the gap adjusting screw rod is connected with the Tab base, the other end of the gap adjusting screw rod is connected with the micro servo motor through a coupler, the center distance pointer is mounted on the upper, the scale is arranged on the upper part of the Tab base.
Specifically, the first CCD camera shoots the size of the center distance of the Tab, and the second CCD camera shoots the size of the height of the Tab.
Specifically, naked electric core carousel material loading module clockwise turning, Tab carousel material loading module anticlockwise rotation.
Specifically, there are 2Tab positioning mechanisms, and the Tab positioning mechanisms are symmetrically arranged on the Tab turntable at 180-degree included angles.
Specifically, naked electric core double suction cup left side is the material loading sucking disc, and the right side is the sucking disc of unloading, Tab double suction cup left side is anodal Tab sucking disc, and the right side is negative pole Tab sucking disc, adsorbs anodal Tab and negative pole Tab material loading simultaneously.
A method for a power battery tab welding device comprises the following steps: material loading, transfer to welding station, key dimension calibration, welding and unload, its detailed working process is: the naked electric core feeding robot places the naked electric core in the naked electric core tray, and the Tab feeding robot places the anode Tab and the cathode Tab in the anode Tab mounting groove and the cathode Tab mounting groove to complete the feeding process; the central servo motor drives the naked cell turntable to rotate clockwise and rotate to a welding station, and the central rotary cylinder drives the Tab turntable to rotate anticlockwise so as to complete the process of rotating to the welding station; the first CCD camera shoots the central distance size of the Tab, if the central distance size is not in the specification range, the miniature servo motor drives the cathode Tab installation groove to move left and right through the gap adjusting lead screw to calibrate to OK, the second CCD camera shoots the height size of the Tab, and if the central distance size is not in the specification range, the servo motor drives the Tab central distance positioning mechanism to move back and forth through the lead screw, the nut slider and the push rod to calibrate to OK, and the key size calibration process is completed; when the ultrasonic welding machine receives a key dimension calibration OK signal, the welding head mounting seat descends and simultaneously carries out positive Tab and negative Tab welding, and the welding process is finished; the naked electric core carousel of central servo motor drive is clockwise rotatory, rotates to the station of unloading, and naked electric core material loading robot takes off the naked electric core that the welding is good, accomplishes the process of unloading.
Compared with the prior art, the invention has the following beneficial effects:
according to the device and the method for welding the power battery Tab, the rotary table feeding and Tab positioning mechanism is skillfully adopted, the positive Tab and the negative Tab can be synchronously welded at the same station by positioning the bare cell once and axially and radially correcting the positive Tab and the negative Tab synchronously, so that the problems of the Tab-lead center distance NG and the Tab-lead height NG in ultrasonic Tab welding are solved, the ultrasonic Tab welding efficiency is greatly improved, and the problem of complicated steps in the conventional ultrasonic Tab welding process is solved.
(1) The Tab positioning mechanism comprises a Tab height positioning mechanism and a Tab center distance positioning mechanism, wherein the Tab height positioning mechanism can be used for carrying out axial adjustment and Tab height calibration, the Tab center distance positioning mechanism can be used for carrying out radial adjustment and Tab center distance calibration, axial and radial synchronous correction is carried out, and the size OK is ensured;
(2) the ultrasonic welding machine integrates the positive welding head and the negative welding head, and the Tab positioning mechanism integrates the positive Tab and the negative Tab, so that the positive Tab and the negative Tab are synchronously welded at the same station, and the ultrasonic welding efficiency of the tabs is greatly improved;
(3) according to the invention, the bare cell turntable and the Tab turntable are adopted for feeding, so that the space utilization rate of equipment is improved;
(4) the Tab turntable feeding module provided by the invention integrates two Tab positioning mechanisms, so that the Tab feeding efficiency is improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The following drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the scope of the invention. In the drawings:
FIG. 1 is an isometric view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of a bare cell turntable feeding module according to the present invention;
fig. 3 is a schematic structural diagram of the inside of the bare cell turntable loading module according to the present invention;
FIG. 4 is a schematic view of an ultrasonic welding machine of the present invention;
FIG. 5 is a schematic view of the Tab turntable feeding module structure of the present invention;
FIG. 6 is a schematic structural diagram of a Tab positioning mechanism of the present invention;
FIG. 7 is a schematic structural view of a Tab center distance adjusting mechanism of the present invention;
fig. 8 is a schematic view of the welding station structure of the present invention.
In the figure: 1 bare cell loading robot, 2 bare cell double suction cups, 3 bare cell rotary table loading module, 301 central servo motor, 302 bare cell rotary table, 303 bare cell, 304 tray mounting groove, 305 bare cell tray, 306 suction cup, 4 ultrasonic welding machine, 401 welding machine base, 402 welding base, 403 negative welding head, 404 positive welding head, 405 welding head mounting base, 406 lifting arm, 407 welding base mounting base, 5 camera support, 6 first CCD camera, 7 second CCD camera, 8Tab rotary table loading module, 801 central rotary cylinder, 802Tab rotary table, 803 linear slide rail, 804 positive Tab, 805 negative Tab, 806Tab positioning mechanism, 807Tab height positioning mechanism, 8071 push rod, 8072 base, 8073 nut slide block, 8074 servo motor, 8075 lead screw, 8076 slide block support, 808Tab center distance positioning mechanism, 8081Tab base, 8082 positive Tab, 8083 positive suction cup, 8084 adjusting gap, 8085 mounting groove, 8086 negative pole sucking disc, 8087 centre-to-centre spacing pointer, 8088 scale, 8089 miniature servo motor, 9Tab material loading robot, 10Tab double suction cups, 11 clearance adjustment lead screws.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
According to the device and the method for welding the power battery Tab, the rotary table feeding and Tab positioning mechanism is skillfully adopted, the positive Tab and the negative Tab can be synchronously welded at the same station by positioning the bare cell once and axially and radially correcting the positive Tab and the negative Tab synchronously, so that the problems of the Tab-lead center distance NG and the Tab-lead height NG in ultrasonic Tab welding are solved, the ultrasonic Tab welding efficiency is greatly improved, and the problem of complicated steps in the conventional ultrasonic Tab welding process is solved.
Referring to fig. 1 to 8, a power battery Tab welding device is composed of a bare cell feeding robot 1, a bare cell double-suction cup 2, a bare cell turntable feeding module 3, an ultrasonic welding machine 4, a camera bracket 5, a first CCD camera 6, a second CCD camera 7, a Tab turntable feeding module 8, a Tab feeding robot 9, and a Tab double-suction cup 10, where the bare cell turntable feeding module 3 includes a central servo motor 301, a bare cell turntable 302, a bare cell 303, a tray mounting groove 304, a bare cell tray 305, and a suction cup 306; the ultrasonic welding machine 4 comprises a welding machine base 401, a welding base 402, a negative welding head 403, a positive welding head 404, a welding head mounting base 405, a lifting arm 406 and a welding base mounting base 407; the Tab turntable feeding module 8 comprises a central rotary cylinder 801, a Tab turntable 802, a linear slide rail 803, an anode Tab 804, a cathode Tab 805 and a Tab positioning mechanism 806; the Tab positioning mechanism 806 comprises a Tab height positioning mechanism 807 and a Tab center distance positioning mechanism 808; the Tab height positioning mechanism 807 comprises a push rod 8071, a base 8072, a nut slide block 8073, a servo motor 8074, a lead screw 8075 and a slide block support 8076; tab center distance positioning mechanism 808 includes Tab base 8081, anodal Tab mounting groove 8082, anodal sucking disc 8083, regulation clearance 8084, negative pole Tab mounting groove 8085, negative pole sucking disc 8086, center distance pointer 8087, scale 8088, miniature servo motor 8089 and clearance adjustment lead screw 11, characterized by: naked electric core double suction cups 2 install at naked electric core material loading robot 1 end naked electric core carousel material loading module 3 sets up between naked electric core material loading robot 1 and ultrasonic welding machine 4, ultrasonic welding machine 4 top is provided with camera support 5, camera support 5 end is installed a CCD camera 6 and No. two CCD cameras 7, Tab carousel material loading module 8 sets up between naked electric core carousel material loading module 3 and Tab material loading robot 9, Tab material loading robot 9 end is installed Tab double suction cups 10.
Referring to fig. 2 and 3, preferably, naked electric core carousel material loading module 3 includes central servo motor 301, naked electric core carousel 302, naked electric core 303, tray mounting groove 304, naked electric core tray 305 and sucking disc 306, central servo motor 301 is connected with naked electric core carousel 302's pivot, naked electric core carousel 302 is provided with 5 tray mounting grooves 304, is the circumference and distributes, naked electric core tray 305 is installed in tray mounting groove 304, naked electric core tray 305 is inside to be provided with sucking disc 306, naked electric core 303 is placed in naked electric core tray 305.
Referring to fig. 4, preferably, the ultrasonic welding machine 4 includes a welding machine base 401, an anvil 402, a negative welding head 403, a positive welding head 404, a welding head mounting base 405, a lifting arm 406 and an anvil mounting base 407, where the anvil 402 is disposed on the anvil mounting base 407, the anvil mounting base 407 is disposed on the welding machine base 401, the negative welding head 403 and the positive welding head 404 are disposed below the welding head mounting base 405, the welding head mounting base 405 is disposed on the lifting arm 406, and the lifting arm 406 is disposed inside the anvil mounting base 407.
Referring to fig. 5 to 8, preferably, the Tab turntable loading module 8 includes a central rotary cylinder 801, a Tab turntable 802, linear sliding rails 803, a positive electrode Tab 804, a negative electrode Tab 805, and a Tab positioning mechanism 806, the central rotary cylinder 801 is connected to a rotating shaft of the Tab turntable 802, the linear sliding rails 803 are installed at two ends of the Tab turntable 802, the Tab positioning mechanism 806 includes a Tab height positioning mechanism 807 and a Tab center distance positioning mechanism 808, the Tab height positioning mechanism 807 is installed on the Tab turntable 802 and connected to the Tab center distance positioning mechanism 808, the Tab center distance positioning mechanism 808 is installed on the linear sliding rails 803, and the positive electrode Tab 804 and the negative electrode Tab 805 are placed on the Tab center distance positioning mechanism 808; the Tab height positioning mechanism 807 comprises a push rod 8071, a base 8072, a nut sliding block 8073, a servo motor 8074, a lead screw 8075 and a sliding block support 8076, one end of the push rod 8071 is connected with the Tab center distance positioning mechanism 808, the other end of the push rod 8071 is connected with the base 8072, the middle part of the push rod 8071 penetrates through a front vertical plate of the sliding block support 8076, the base 8072 is installed on the nut sliding block 8073, the middle part of the nut sliding block 8073 is connected with the lead screw 8075, the two ends of the nut sliding block 8073 are connected with the sliding block support 8076 in a sliding manner, one end of the lead screw 8075 is installed on the sliding block support 8076, the other end of the lead screw 8075 is; the Tab center distance positioning mechanism 808 comprises a Tab base 8081, a positive Tab mounting groove 8082, a positive sucker 8083, an adjustable gap 8084, a negative Tab mounting groove 8085, a negative sucker 8086, a center distance pointer 8087, a scale 8088, a micro servo motor 8089 and a gap adjusting screw 11, wherein the bottom of the Tab base 8081 is connected with a linear slide rail 803, the positive sucker 8083 is arranged on the inner surface of the positive Tab mounting groove 8082, the positive Tab 804 is arranged in the positive Tab mounting groove 8082, the adjustable gap 8084 is arranged between the positive Tab mounting groove 8082 and the negative Tab mounting groove 8085, the negative sucker 8086 is arranged on the surface of the negative Tab mounting groove 8085, the negative Tab is arranged in the negative Tab mounting groove 8085, the bottom of the negative Tab mounting groove 8085 is connected with the gap adjusting screw 11, one end of the gap adjusting screw 11 is connected with the Tab base 8081, and the other end is connected with the micro servo motor 8089 through a coupling 805, the center distance pointer 8087 is arranged on the upper part of the cathode Tab installation groove 8085 and is connected with the scale 8088 in a sliding way, and the scale 8088 is arranged on the upper part of the Tab base 8081.
Referring to fig. 1, specifically, the first CCD camera 6 photographs the Tab center distance size, and the second CCD camera 7 photographs the Tab height size.
Referring to fig. 1, specifically, naked electric core carousel material loading module 3 clockwise rotates, Tab carousel material loading module 8 anticlockwise rotates.
Referring to fig. 5, specifically, there are 2Tab positioning mechanisms 806 symmetrically installed on the Tab rotating disc 802 at an included angle of 180 °.
Referring to fig. 1, specifically, the left side of the bare cell double-suction cup 2 is a feeding suction cup, the right side is a discharging suction cup, the left side of the Tab double-suction cup 10 is an anode Tab 804 suction cup, the right side is a cathode Tab 805 suction cup, and the anode Tab 804 and the cathode Tab 805 are adsorbed simultaneously for feeding.
To assist in understanding the basic embodiment of the present invention, the operation of the method for welding the tabs of the power battery is described with reference to fig. 1 to 8, and the method comprises the following steps: material loading, transfer to welding station, key dimension calibration, welding and unload, its detailed working process is: the bare cell feeding robot 1 places the bare cell 303 in the bare cell tray 305, and the Tab feeding robot 9 places the positive Tab 804 and the negative Tab 805 in the positive Tab installation groove 8082 and the negative Tab installation groove 8085 to complete the feeding process; the central servo motor 301 drives the naked cell turntable 302 to rotate clockwise and rotate to a welding station, and the central rotary cylinder 801 drives the Tab turntable 802 to rotate anticlockwise so as to complete the process of rotating to the welding station; the first CCD camera 6 shoots the size of the Tab center distance, if the first CCD camera is not in the specification range, the miniature servo motor 8089 drives the cathode Tab installation groove 8085 to move left and right through the gap adjusting screw rod 11 to calibrate to OK, the second CCD camera 7 shoots the size of the Tab height, if the second CCD camera is not in the specification range, the servo motor 8074 drives the Tab center distance positioning mechanism 808 to move back and forth through the screw rod 8075, the nut slider 8073 and the push rod 8071 to calibrate to OK, and the key size calibration process is completed; when the ultrasonic welding machine 4 receives the key size calibration OK signal, the welding head mounting seat 405 descends and simultaneously performs welding of the positive Tab 804 and the negative Tab 805, and the welding process is completed; the naked electric core carousel 302 of central servo motor 301 drive clockwise rotation, changes to the station of unloading, and naked electric core material loading robot 1 takes off the naked electric core 303 that welds well, accomplishes the process of unloading.
The present invention is not limited to the above embodiments, and various combinations of the above embodiments can be combined in any suitable manner without departing from the scope of the present invention. However, the present invention is not limited to the details of the above embodiments, and it will be apparent to those skilled in the art that the embodiments may be changed, modified, replaced and modified without departing from the principle and spirit of the present invention.

Claims (6)

1. The utility model provides a power battery utmost point ear welding set which characterized by: the device comprises a naked electric core feeding robot, a naked electric core double-suction disc, a naked electric core rotary disc feeding module, an ultrasonic welding machine, a camera support, a first CCD camera, a second CCD camera, a Tab rotary disc feeding module, a Tab feeding robot and a Tab double-suction disc, wherein the naked electric core rotary disc feeding module comprises a central servo motor, a naked electric core rotary disc, a naked electric core, a tray mounting groove, a naked electric core tray and a suction disc; the ultrasonic welding machine comprises a welding machine base, a welding base, a negative welding head, a positive welding head, a welding head mounting base, a lifting arm and a welding base mounting base; the Tab turntable feeding module comprises a central rotary cylinder, a Tab turntable, a linear slide rail, an anode Tab, a cathode Tab and a Tab positioning mechanism; the Tab positioning mechanism comprises a Tab height positioning mechanism and a Tab center distance positioning mechanism; the Tab height positioning mechanism comprises a push rod, a base, a nut slide block, a servo motor, a lead screw and a slide block bracket; the Tab center distance positioning mechanism comprises a Tab base, an anode Tab mounting groove, an anode sucker, an adjusting gap, a cathode Tab mounting groove, a cathode sucker, a center distance pointer, a scale, a micro servo motor and a gap adjusting screw rod, wherein the naked electric core double sucker is mounted at the tail end of a naked electric core feeding robot, the naked electric core turntable feeding module is arranged between the naked electric core feeding robot and an ultrasonic welding machine, a camera support is arranged above the ultrasonic welding machine, a first CCD camera and a second CCD camera are mounted at the tail end of the camera support, the Tab turntable feeding module is arranged between the naked electric core turntable feeding module and the Tab feeding robot, and the Tab double sucker is mounted at the tail end of the Tab feeding robot;
the central servo motor is connected with a rotating shaft of the naked electric core turntable, the naked electric core turntable is provided with 5 tray mounting grooves which are distributed in a circumferential manner, the naked electric core tray is mounted in the tray mounting grooves, a sucking disc is arranged inside the naked electric core tray, and the naked electric core is placed in the naked electric core tray;
the welding seat is arranged on the welding seat mounting seat, the welding seat mounting seat is arranged on the welding machine base, the negative electrode welding head and the positive electrode welding head are arranged on the lower portion of the welding head mounting seat, the welding head mounting seat is arranged on the lifting arm, and the lifting arm is arranged inside the welding seat mounting seat;
the central rotary cylinder is connected with a rotating shaft of the Tab rotary table, linear slide rails are mounted at two ends of the Tab rotary table, the Tab positioning mechanism comprises a Tab height positioning mechanism and a Tab center distance positioning mechanism, the Tab height positioning mechanism is mounted on the Tab rotary table and connected with the Tab center distance positioning mechanism, the Tab center distance positioning mechanism is mounted on the linear slide rails, and the positive electrode Tab and the negative electrode Tab are placed on the Tab center distance positioning mechanism; the Tab height positioning mechanism comprises a push rod, a base, a nut slider, a servo motor, a lead screw and a slider bracket, one end of the push rod is connected with the Tab center distance positioning mechanism, the other end of the push rod is connected with the base, the middle part of the push rod penetrates through a front vertical plate of the slider bracket, the base is arranged on the nut slider, the middle part of the nut slider is connected with the lead screw, the two ends of the nut slider are connected with the slider bracket in a sliding manner, one end of the lead screw is arranged on the slider bracket, the other end of the lead screw is connected with the servo motor through a; the Tab center distance positioning mechanism comprises a Tab base, an anode Tab mounting groove, an anode sucker, an adjusting gap, a cathode Tab mounting groove, a cathode sucker, a center distance pointer, a scale, a micro servo motor and a gap adjusting screw rod, wherein the bottom of the Tab base is connected with a linear slide rail, the inner surface of the anode Tab mounting groove is provided with the anode sucker, the anode Tab is placed in the anode Tab mounting groove, the adjusting gap is arranged between the anode Tab mounting groove and the cathode Tab mounting groove, the inner surface of the cathode Tab mounting groove is provided with the cathode sucker, the cathode Tab is placed in the cathode Tab mounting groove, the bottom of the cathode Tab mounting groove is connected with the gap adjusting screw rod, one end of the gap adjusting screw rod is connected with the Tab base, the other end of the gap adjusting screw rod is connected with the micro servo motor through a coupler, the center distance pointer is mounted on the upper, the scale is arranged on the upper part of the Tab base.
2. The power battery tab welding device of claim 1, wherein: the first CCD camera shoots the size of the central distance of the Tab, and the second CCD camera shoots the size of the height of the Tab.
3. The power battery tab welding device of claim 1, wherein: naked electric core carousel material loading module clockwise turning, Tab carousel material loading module anticlockwise rotation.
4. The power battery tab welding device of claim 1, wherein: and 2Tab positioning mechanisms are arranged and symmetrically arranged on the Tab turntable at 180-degree included angles.
5. The power battery tab welding device of claim 1, wherein: naked electric core double suction cup left side is the material loading sucking disc, and the right side is the sucking disc of unloading, Tab double suction cup left side is anodal Tab sucking disc, and the right side is negative pole Tab sucking disc, adsorbs anodal Tab and negative pole Tab material loading simultaneously.
6. The method for welding the power battery tab as claimed in claim 1, wherein the method comprises the following steps: the method comprises the following steps:
1) feeding material
The naked electric core feeding robot places the naked electric core in the naked electric core tray, and the Tab feeding robot places the anode Tab and the cathode Tab in the anode Tab mounting groove and the cathode Tab mounting groove to complete the feeding process;
2) transferred to a welding station
The central servo motor drives the naked cell turntable to rotate clockwise and rotate to a welding station, and the central rotary cylinder drives the Tab turntable to rotate anticlockwise so as to complete the process of rotating to the welding station;
3) critical dimension calibration
The first CCD camera shoots the central distance size of the Tab, if the central distance size is not in the specification range, the miniature servo motor drives the cathode Tab installation groove to move left and right through the gap adjusting lead screw to calibrate to OK, the second CCD camera shoots the height size of the Tab, and if the central distance size is not in the specification range, the servo motor drives the Tab central distance positioning mechanism to move back and forth through the lead screw, the nut slider and the push rod to calibrate to OK, and the key size calibration process is completed;
4) welding of
When the ultrasonic welding machine receives a key dimension calibration OK signal, the welding head mounting seat descends and simultaneously carries out positive Tab and negative Tab welding, and the welding process is finished;
5) discharging
The central servo motor drives the naked electric core rotary table to rotate clockwise, the naked electric core rotary table is rotated to an unloading station, and a naked electric core feeding robot takes down the welded naked electric core to complete the unloading process;
and repeating the steps 1) to 5) to carry out the next welding operation.
CN201910603172.0A 2019-07-05 2019-07-05 Power battery tab welding device and method Active CN110253132B (en)

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CN111941094A (en) * 2020-08-07 2020-11-17 苏州晟成光伏设备有限公司 Deviation-rectifying welding machine for battery assembly
CN112968204B (en) * 2021-03-03 2021-10-01 深圳市拓野智能股份有限公司 Soft packet of power battery module automatic feeding device

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