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CN105679999B - Pole piece bag making equipment of square lithium ion power battery cell - Google Patents

Pole piece bag making equipment of square lithium ion power battery cell Download PDF

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Publication number
CN105679999B
CN105679999B CN201610148897.1A CN201610148897A CN105679999B CN 105679999 B CN105679999 B CN 105679999B CN 201610148897 A CN201610148897 A CN 201610148897A CN 105679999 B CN105679999 B CN 105679999B
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China
Prior art keywords
pole piece
diaphragm
positioning
bag making
unreeling
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CN201610148897.1A
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Chinese (zh)
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CN105679999A (en
Inventor
吴立伟
邓友明
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Shengda Intelligent Equipment Shenzhen Co ltd
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Dongguan Wei Sheng Mechanical Equipment Technology Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/04Processes of manufacture in general
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Primary Cells (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses pole piece bag making equipment of a square lithium ion power battery cell, which comprises a feeding device, an unreeling device, a pole piece moving device, a pole piece positioning device, a cutting device and a receiving device, wherein the feeding device is provided with a feeding box; the unreeling device is provided with a diaphragm deviation correcting mechanism, a diaphragm tension mechanism and a diaphragm transition rod, so that tension can be accurately controlled; the receiving device is provided with a receiving box, a receiving manipulator and a pulling manipulator and is used for collecting pole pieces after bag making. The unreeling device can keep the tension of the diaphragm constant, the diaphragm has small extension deformation, and the diaphragm can automatically correct the deviation. By accurately positioning the pole pieces, no dislocation can be ensured as the diaphragm advances. The pole piece positioning part is provided with an ultrasonic sensor and can detect repeated stacking of a plurality of pieces; the pole piece moving device is provided with a shaking mechanism, and the cutting device is matched with a rubber pressing roller, a heat insulation knife and the like, so that the stability during folding can be ensured.

Description

Pole piece bag making equipment of square lithium ion power battery cell
Technical Field
The invention relates to the field of battery preparation, in particular to preparation equipment for a square lithium ion power battery cell pole piece.
Background
Lithium batteries have now become the mainstream as modern science evolves. The existing lithium battery is very important in production and manufacture, and the good electrode plate can improve the service life and the battery capacity of the battery. The electrode pole piece production bag making process has strict requirements on the taking and placing of the pole pieces, and the pole pieces can be rapidly absorbed and accurately positioned, so that the production efficiency and the production quality of the pole pieces can be improved. The existing material taking device for pole piece bag making has the defects that the number of the taken pole pieces is unstable, the pole pieces cannot be accurately positioned, more dust exists on the pole pieces, the folding cannot be accurately performed, and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lithium ion power battery cell pole piece bagging device which is capable of making bags without dislocation and reliably positioning.
The above object is achieved by the following technical scheme:
A pole piece bag making device of square lithium ion power battery cell comprises a feeding device, an unreeling device, a pole piece moving device, a pole piece positioning device, a cutting device and a receiving device,
The feeding device is provided with a feeding box;
The unreeling device is provided with
The diaphragm deviation correcting mechanism automatically corrects the unreeling of the pole piece;
the diaphragm tension mechanism is used for automatically unreeling the pole piece;
And a diaphragm transition rod, accurately assisting in tension control;
The receiving device is provided with a receiving box, a receiving manipulator and a pulling manipulator, and is used for collecting pole pieces after bag making.
As a further description of the pole piece bag making equipment of the square lithium ion power battery cell, the diaphragm deviation rectifying mechanism comprises a stepping motor, a motion screw and an optical fiber sensor for control, and the diaphragm tension mechanism is positioned below the diaphragm deviation rectifying mechanism and comprises a gravity roller and a speed regulating motor, wherein the gravity roller is positioned below the diaphragm transition roller.
As a further description of the pole piece bag making equipment of the square lithium ion power battery cell, the pole piece moving device comprises a material taking plate, a vacuum generator, a moving flat plate, a shaking mechanism and a material sucking mechanism, wherein one side of the material taking plate is provided with the vacuum generator, the material sucking mechanism is connected with the vacuum generator and is positioned below the shaking mechanism, and the vacuum generator, the moving flat plate, the shaking mechanism and the material sucking mechanism are all fixed on the material taking plate.
As a further description of the pole piece bag making equipment of the square lithium ion power battery cell, the pole piece positioning device comprises a movable positioning plate, a fixed positioning plate and a positioning template, wherein the movable positioning plate and the fixed positioning plate are respectively positioned at the periphery of the positioning template, the pole piece is placed on the positioning template, the ultrasonic sensor faces the positioning template, and the overlapping quantity of the pole pieces is detected.
As a further description of the pole piece bag making equipment of the square lithium ion power battery cell, the cutting device comprises a cold cutter cutting mechanism, a heat insulation sealing cutter, a rubber pressing roller and a feeding mechanical arm, wherein the rubber pressing roller is positioned above the pole piece moving device, the heat insulation sealing cutter is positioned on two sides of the rubber pressing roller, and the cold cutter cutting mechanism is positioned on one side of the pulling mechanical arm.
The beneficial effects of the invention are as follows: the unwinding device can keep the tension of the diaphragm constant, the diaphragm unwinding device is controlled by a servo motor, the diaphragm tension is accurately controlled by the active uniform speed unwinding and the gravity roller, the diaphragm extension deformation is small, and the diaphragm belt automatically rectifies. By accurately positioning the pole piece, dislocation is avoided along with the travelling of the diaphragm, and the pole piece bag making precision is ensured to be less than or equal to 0.5mm. The pole piece positioning part is provided with an ultrasonic sensor and can detect repeated stacking of a plurality of pieces; the pole piece moving device is provided with a shaking mechanism, and the cutting device is matched with a rubber pressing roller, a heat insulation knife and the like, so that the stability during folding can be ensured. Because of combining the heat insulating knife, the edge cutting after the diaphragm cutting has no warpage and wave, and the four corners also ensure no corner warping phenomenon.
Drawings
Fig. 1 is an overall construction diagram of the present invention.
Fig. 2 is a schematic structural view of the unreeling device.
Fig. 3 is a schematic structural view of a pole piece moving device.
Fig. 4 is a schematic structural view of a cutting-type device with a heat-insulating sealing knife position.
Fig. 5 is a schematic structural view of the pole piece positioning device.
Fig. 6 is a schematic structural view of a cutting-type device.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
Referring to fig. 1-6, a pole piece bag making device of a square lithium ion power battery cell comprises a feeding device 1, an unreeling device 2, a pole piece moving device 3, a pole piece positioning device 4, a cutting-type device 5 and a receiving device 6,
The feeding device 1 is provided with a feeding box;
the unreeling device 2 is provided with
The diaphragm deviation correcting mechanism 7 is used for automatically correcting the unreeling of the pole piece;
the diaphragm tension mechanism is used for automatically unreeling the pole piece;
And a diaphragm transition rod, accurately assisting in tension control;
The material receiving device 6 is provided with a material receiving box 61, a material receiving manipulator 62 and a material pulling manipulator 63, and is used for collecting pole pieces after bag making.
As a further description of the above-mentioned pole piece bag making device of square lithium ion power battery cell, the diaphragm deviation rectifying mechanism 7 includes a stepping motor 21, a moving screw 22 and an optical fiber sensor, the diaphragm tension mechanism is located below the diaphragm deviation rectifying mechanism and includes a gravity roller 23 and a speed regulating motor 24, and the gravity roller 23 is located below a diaphragm transition roller 25. The unreeling device carries out uniform unreeling control through 2 groups of gravity rollers and a speed regulating motor, so that the tension of the diaphragm is constant, and the front and rear positions of the diaphragm are automatically corrected.
As a further description of the above-mentioned pole piece bag making device of square lithium ion power battery cell, the pole piece moving device 3 includes a material taking plate 31, a vacuum generator 32, a moving plate 33, a shaking mechanism 34 and a material sucking mechanism 35, one side of the material taking plate 31 is provided with the vacuum generator 32, the material sucking mechanism 35 is connected with the vacuum generator 32 and is located below the shaking mechanism 34, and the vacuum generator, the moving plate 33, the shaking mechanism 34 and the material sucking mechanism 35 are all fixed on the material taking plate 31. The vacuum generator of the pole piece moving device can independently reciprocate up and down, and the material sucking mechanism from the material box to the pole piece positioning device has an automatic shaking function through the shaking mechanism.
As a further description of the pole piece bag making device of the square lithium ion power battery cell, the pole piece positioning device 4 comprises a movable positioning plate 41, a fixed positioning plate 42 and a positioning template 43, wherein the movable positioning plate 41 and the fixed positioning plate 42 are respectively positioned around the positioning template 43, the pole pieces are placed on the positioning template, the ultrasonic sensor faces the positioning template, and when in positioning, a plurality of pieces of pole pieces can be detected by applying ultrasonic waves, so that only one piece of pole pieces is sucked each time, and the overlapping quantity of the pole pieces is detected.
As a further description of the above-mentioned pole piece bag making device of square lithium ion power battery cell, the cutting device 5 comprises a cold cutter cutting mechanism 51, a heat insulation cutter 52 and a glue pressing roller 53, wherein the glue pressing roller 53 is positioned above the pole piece moving device 3, the heat insulation cutter 52 is positioned at two sides of the glue pressing roller, and the cold cutter cutting mechanism is positioned at one side of the material pulling manipulator. The heat sealing device part sucks the pole piece onto the lower diaphragm through the sucker, after the pole piece is placed at the designated position, the upper heat insulation sealing knife descends to complete bag making, and the pole piece is made into bags through the plurality of sealing knives mutually matched with the rubber pressing rollers, so that the bag making position can be ensured to be accurate. The diaphragm is cut by adopting a cold cutter mode, and the problems of wiredrawing, shrinkage deformation and the like are avoided after the diaphragm is cut.
The work of the invention is specifically divided into the following procedures:
The upper diaphragm and the lower diaphragm are actively unreeled, and pole pieces are introduced into a bag making station through a tension mechanism, a diaphragm transition roller 25, a gravity roller, a shaking mechanism and other mechanisms;
Meanwhile, the sucker of the suction mechanism of the pole piece moving device takes out the pole piece to be bagged from the material box and puts the pole piece into a positioning template of the pole piece positioning device;
After the secondary positioning, the sucking disc of the feeding mechanism places the positioned pole piece above the lower-layer diaphragm of the bag making station;
After the sucking disc of the sucking mechanism is placed with the pole piece, in the process that the manipulator returns to the original position, the upper layer diaphragm is pulled by the rubber pressing roller to wrap the pole piece, and when the sucking disc returns to the original position, the pole piece is sealed in the two layers of diaphragms by the heat insulating knife.
The clip 84 then clamps the bagged pole piece and pulls the bagged pole piece to the cold knife cutting mechanism position via the pulling manipulator. When the material pulling manipulator moves, the upper diaphragm and the lower diaphragm can automatically retract and unwind the pole piece raw materials.
When the pulling manipulator 61 pulls the pole piece after bag making to the cold cutter cutting mechanism, the cold cutter cutting mechanism cuts off the pole piece after bag making, the cut pole piece is guided by the flat belt 82 and then taken out by the sucker of the material collecting device, and then the material collecting manipulator 83 is conveyed into the material collecting box.
In the process, the motion of the material sucking mechanism, the material pulling manipulator and the material receiving manipulator is synchronously and actively carried out, so that the stable and smooth processing can be kept in the running process of the equipment.
The above description should not be taken as limiting the scope of the invention, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (2)

1. The utility model provides a square lithium ion power battery cell's pole piece system bag equipment, includes feedway, unreels device, pole piece mobile device, pole piece positioner, cuts into cutting device and material receiving device, its characterized in that:
the feeding device is provided with a feeding box;
The unreeling device is provided with
The diaphragm deviation correcting mechanism automatically corrects the unreeling of the pole piece;
the diaphragm tension mechanism is used for automatically unreeling the pole piece;
And a diaphragm transition rod, accurately assisting in tension control;
the receiving device is provided with a receiving box, a receiving manipulator and a pulling manipulator, and is used for collecting pole pieces after bag making;
The pole piece moving device comprises a material taking plate, a vacuum generator, a moving flat plate, a shaking mechanism and a material sucking mechanism, wherein the vacuum generator is arranged on one side of the material taking plate, the material sucking mechanism is connected with the vacuum generator and is positioned below the shaking mechanism, and the vacuum generator, the moving flat plate, the shaking mechanism and the material sucking mechanism are all fixed on the material taking plate;
The pole piece positioning device comprises a movable positioning plate, an ultrasonic sensor, a fixed positioning plate and a positioning template, wherein the movable positioning plate and the fixed positioning plate are respectively positioned at the periphery of the positioning template, the pole pieces are placed on the positioning template, the ultrasonic sensor faces the positioning template, and the overlapping quantity of the pole pieces is detected;
The cutting device comprises a cold cutter cutting mechanism, a heat-insulating sealing cutter, a rubber pressing roller and a feeding mechanical arm, wherein the rubber pressing roller is positioned above the pole piece moving device, the heat-insulating sealing cutter is positioned at two sides of the rubber pressing roller, and the cold cutter cutting mechanism is positioned at one side of the pulling mechanical arm.
2. The pole piece bagging device of the square lithium ion power battery cell according to claim 1, wherein: the diaphragm deviation rectifying mechanism comprises a stepping motor, a motion screw and an optical fiber sensor for control, wherein the diaphragm tension mechanism is positioned below the diaphragm deviation rectifying mechanism and comprises a gravity roller and a speed regulating motor, and the gravity roller is positioned below the diaphragm transition stick.
CN201610148897.1A 2016-03-16 2016-03-16 Pole piece bag making equipment of square lithium ion power battery cell Active CN105679999B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610148897.1A CN105679999B (en) 2016-03-16 2016-03-16 Pole piece bag making equipment of square lithium ion power battery cell

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Application Number Priority Date Filing Date Title
CN201610148897.1A CN105679999B (en) 2016-03-16 2016-03-16 Pole piece bag making equipment of square lithium ion power battery cell

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CN105679999B true CN105679999B (en) 2024-07-26

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106654312B (en) * 2017-01-17 2023-03-24 深圳市佰瑞自动化设备有限公司 Automatic bag making machine
CN108860740B (en) * 2018-07-18 2019-04-19 宁波格劳博机器人有限公司 Lithium battery PE bag sealing device
CN108735975A (en) * 2018-07-27 2018-11-02 深圳市格林晟科技有限公司 A kind of folded equipment integrating of lithium battery pole slice brush
CN109473712A (en) * 2018-11-26 2019-03-15 惠州锂威新能源科技有限公司 A kind of lithium-ion electric core airbag is anti-to be can't cut device and prevents the method that can't cut
CN109659627B (en) * 2018-12-28 2024-03-29 惠州市恒泰科技股份有限公司 Hot air type bag making machine
CN110137558B (en) * 2019-05-22 2020-08-25 广东东博自动化设备有限公司 Battery film pressing machine
CN111564601A (en) * 2020-04-30 2020-08-21 广州超音速自动化科技股份有限公司 A high-efficiency lithium battery pole piece bag making machine
CN112599858A (en) * 2020-12-21 2021-04-02 深圳市泽诚自动化设备有限公司 Sheet-making and tape-making method and integrated equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202940299U (en) * 2012-09-29 2013-05-15 珠海华冠电子科技有限公司 Integral device for manufacturing battery pole piece and winding battery cell
CN104183818A (en) * 2013-05-22 2014-12-03 邵阳市达力电源实业有限公司 Wide tape pasting machine
CN204333142U (en) * 2015-01-21 2015-05-13 东莞市精益自动化设备有限公司 A kind of quadrate lithium battery winding mechanism assembly
CN204464395U (en) * 2015-03-10 2015-07-08 中航锂电(洛阳)有限公司 A battery lamination machine
CN205081172U (en) * 2015-08-18 2016-03-09 深圳吉阳智云科技有限公司 System bag lamination all -in -one
CN205666281U (en) * 2016-03-16 2016-10-26 东莞市伟升机械设备科技有限公司 Pole piece bag making equipment of square lithium ion power batteries electricity core

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10294097A (en) * 1997-02-24 1998-11-04 Mitsubishi Electric Corp Thin type cell
CN202363534U (en) * 2011-11-11 2012-08-01 东莞市鸿宝锂电科技有限公司 Pole Piece Cutting Machine
CN203326045U (en) * 2013-06-15 2013-12-04 东莞市鸿宝锂电科技有限公司 Lithium battery automatic turntable packaging and forming equipment
CN103346352B (en) * 2013-06-15 2016-03-09 东莞市鸿宝锂电科技有限公司 Lithium battery Full automatic rotating disc type packaging former
CN204315662U (en) * 2015-01-28 2015-05-06 浙江中科立德新材料有限公司 A kind of fast and convenient battery pole piece forming machine
CN105119009B (en) * 2015-08-18 2018-04-10 深圳吉阳智云科技有限公司 The manufacture method of battery bag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202940299U (en) * 2012-09-29 2013-05-15 珠海华冠电子科技有限公司 Integral device for manufacturing battery pole piece and winding battery cell
CN104183818A (en) * 2013-05-22 2014-12-03 邵阳市达力电源实业有限公司 Wide tape pasting machine
CN204333142U (en) * 2015-01-21 2015-05-13 东莞市精益自动化设备有限公司 A kind of quadrate lithium battery winding mechanism assembly
CN204464395U (en) * 2015-03-10 2015-07-08 中航锂电(洛阳)有限公司 A battery lamination machine
CN205081172U (en) * 2015-08-18 2016-03-09 深圳吉阳智云科技有限公司 System bag lamination all -in -one
CN205666281U (en) * 2016-03-16 2016-10-26 东莞市伟升机械设备科技有限公司 Pole piece bag making equipment of square lithium ion power batteries electricity core

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Effective date of registration: 20240802

Address after: 518000, 8C-59, Zone A, Hongsong Building, Tian'an Community, Shatou Street, Futian District, Shenzhen City, Guangdong Province, China

Patentee after: Shengda Intelligent Equipment (Shenzhen) Co.,Ltd.

Country or region after: China

Address before: Building B, Building 1, No. 9, Tiansha Road, Keyuan City, Tangxia Town, Dongguan City, Guangdong Province, 523000

Patentee before: DONGGUAN WEI SHENG MECHANICAL EQUIPMENT TECHNOLOGY CO.,LTD.

Country or region before: China