CN102709522A - Terminal forming machine and method for pole piece of lithium battery - Google Patents
Terminal forming machine and method for pole piece of lithium battery Download PDFInfo
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- CN102709522A CN102709522A CN2012101493312A CN201210149331A CN102709522A CN 102709522 A CN102709522 A CN 102709522A CN 2012101493312 A CN2012101493312 A CN 2012101493312A CN 201210149331 A CN201210149331 A CN 201210149331A CN 102709522 A CN102709522 A CN 102709522A
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- cutting
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- backing plate
- assembly
- lug
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a terminal forming machine and method for a pole piece of a lithium battery. The terminal forming machine comprises an unwinding component (2), a cutting base plate (20), a laser cutting head (9), a winding component (18) and a control system, wherein the cutting base plate (20) is placed on a pole piece motion path between the unwinding component (2) and the winding component (18), the laser cutting head (9) is arranged over the cutting base plate (20), and the control system is connected with the unwinding component (2), the laser cutting head (9) and the winding component (18) through signals. The terminal forming machine and method have the advantages that the pole producing process quality is remarkably improved, the consistency of a battery cell is guaranteed, the pole producing efficiency is improved, and subsequent handling of the pole producing process is facilitated.
Description
Technical field
The application relates to field of batteries, relates in particular to a kind of lug make-up machine and lug forming method of lithium battery pole slice.
Background technology
In the electric core manufacture process of lithium ion battery (especially high capacity lithium ion battery); Usually have two kinds of pole piece film-making modes: a kind of mode is before electric core winding; The nickel strap lug is welded on the pole piece to adopt ultrasonic welding process to incite somebody to action independently through the lug bonding machine; This mode is owing to be connected through solder joint between lug and the pole piece, and one side weld resistance is bigger, influences the accumulator cell charging and discharging quality; If ultrasonic welding process quality instability or pole piece supplied materials and nickel strap supplied materials speed are unbalanced on the other hand, cause problems such as the lug welding is not firm, film-making speed is slow, qualification rate is low easily.The second way is before Z type lamination is made electric core; Utilize the mode that cutting die is die-cut, the five metals stamping is cut on pole piece, to cut the formation lug; This mode has been avoided the big problem of junction resistance of lug and pole piece, yet the cutting die cutting causes quality problems such as big, the easy dry linting of burr easily; Cause qualification rate low, also there are problems such as film-making speed is slow, the cutting die life-span is short in this mode simultaneously.
It is thus clear that existing pole piece film-making mode and equipment are demanded urgently improving.
Summary of the invention
The application provides the lug make-up machine and the lug forming method of another kind of lithium battery pole slice, can improve film-making technology, the raising film-making efficient of electrodes of lithium-ion batteries.
According to a first aspect of the invention; The present invention provides a kind of lug make-up machine of lithium battery pole slice; Comprise and unreel assembly, cutting backing plate, laser cutting head, rolling assembly and control system; Said cutting backing plate is placed on the said pole piece motion path that unreels between assembly and the said rolling assembly, and said laser cutting head is installed in directly over the said cutting backing plate, and said control system is connected with the said assembly, laser cutting head, rolling component signals of unreeling.
Further, comprise also and send the fixed length assembly that the said fixed length assembly that send is arranged on the pole piece motion path between said cutting backing plate and the said rolling assembly.
Further, said cutting backing plate sidepiece also is provided with the waste material output precision, and said waste material output precision comprises hairbrush and drives the driver that is connected with said hairbrush.
Further, on the said pole piece motion path that unreels between assembly and the said cutting backing plate and/or on the pole piece motion path between said cutting backing plate and the said rolling assembly at least one brush dust dust suction subassembly is set also.
Further, on the said pole piece motion path that unreels between assembly and the said cutting backing plate and on the pole piece motion path between said cutting backing plate and the said rolling assembly tension control mechanism is set all.
Further, have the cutting zone relative with said laser cutting head on the said cutting backing plate, said cutting zone adopts nitrogen protection.
Further, said cutting backing plate is provided with the wind-force dust suction subassembly respectively in both sides up and down.
Further; On the said pole piece motion path that unreels between assembly and the said cutting backing plate and on the pole piece motion path between said cutting backing plate and the said rolling assembly correction inductor is set all, said correction inductor also is connected with said control system signal.
Further, also comprise frame, said assembly, cutting backing plate, laser cutting head, rolling assembly and the control system of unreeling all is installed on the said frame.
According to a further aspect in the invention, the present invention provides a kind of lug forming method of lithium battery pole slice, may further comprise the steps:
Steps A: will be delivered on the cutting backing plate from the pole piece that unreels assembly;
Step B: utilize laser cutting head, the pole piece on the cutting backing plate is cut the formation lug according to preset pattern cut or cutting parameter;
Step C: the pole piece after will cutting is delivered to the rolling assembly.
The application's beneficial effect is: the present invention adopts the mode of laser cutting directly on electrodes of lithium-ion batteries especially lithium ion power cell pole flakes, to cut automatically continuously and forms lug; The mode that forms lug with cutting die cutting in the prior art is compared; Can make full use of that the monochromaticjty of laser own is good, the angle of divergence is little, the excellent properties of easy focusing improves the film-making processing quality; For example reduced cutting burr, dry linting few, realize that round-corner transition, pattern cut are provided with flexibly, cutting efficiency is high easily; Realize the cutting of high accuracy and best bright finish, thereby ensured the consistency of electric core, reduced percent defective.And the present invention forms coiled strip again after coiled strip is cut continuously, further improved film-making efficient, also the subsequent handling of film-making operation provided convenience.
Description of drawings
Fig. 1 is the lug make-up machine axonometric drawing of the lithium battery pole slice of an embodiment of the present invention;
Fig. 2 is the lug shaping machine structure sketch of the lithium battery pole slice of an embodiment of the present invention;
Fig. 3 is the control principle figure of laser formation machine of the lithium battery pole slice of an embodiment of the present invention;
Fig. 4 is the pole piece sketch map that the sharp ear make-up machine of the lithium battery pole slice of an embodiment of the present invention obtains;
Fig. 5 is the process chart of sharp ear make-up machine of the lithium battery pole slice of an embodiment of the present invention.
Embodiment
Combine accompanying drawing that the present invention is done further explain through embodiment below.
In the application embodiment; The sharp ear make-up machine of lithium battery pole slice adopts laser that electrodes of lithium-ion batteries is cut the formation lug; Particularly, at first utilize to unreel assembly the coiled strip pole piece is delivered on the cutting backing plate, laser beam modulation head assembly is under the control of control system; Utilize laser head, according to preset pattern cut or cutting parameter the pole piece on the cutting backing plate cut the formation lug continuously, the pole piece after will cutting at last is delivered to the rolling assembly and forms coiled strip.
Please refer to Fig. 1 and Fig. 2; The sharp ear make-up machine of this execution mode lithium battery pole slice mainly comprises frame 22, and is installed in unreeling assembly 2, two tension control mechanisms, three brush dust dust suction subassemblies, cutting backing plate 20, laser cutting heads 9, send fixed length assembly 14 on the frame 22, waste material output precision 16, two dust suction subassemblies, rolling assembly 1 and control system.
Particularly, frame 22 is used for other each assemblies are fixed and located.Unreel assembly 2 and have the inflatable axle that is used to place pole piece coiled strip 1, under the driving of servomotor, the inflatable axle can drive coiled strip 1 rotation and realize self-feeding.Accordingly, rolling assembly 18 also has the inflatable axle that is used to place pole piece coiled strip 19, and under the driving of servomotor, the inflatable axle can drive coiled strip 1 rotation and realize automatic material receiving.Has certain pole piece motion path from unreeling the pole piece that assembly 2 one ends are delivered to rolling assembly 18 1 ends; Cutting backing plate 20 is placed on this pole piece motion path; The laser cutting head 9 that links to each other with laser controller be installed in the cutting backing plate 20 directly over; Cutting has the cutting zone relative with laser cutting head 9 on the backing plate 20, and laser cutting head 9 can adopt a galvanometer and the mode that a mirror image combines, and through special-purpose control program position corresponding with cutting zone on the pole piece is cut automatically.Before the cutting; Preset cutting drawing shelves or cut lengths are other relevant parameters in the laser controller; In the cutting process; Also can in pole piece advances at utmost speed process, compensate automatically according to the pole piece pace, carry out fly-cutting at the direction of motion of pole piece and Width and form lug, graphics shape that guarantees simultaneously to cut out and precision and set point are consistent.Cutting zone also can adopt nitrogen protection, plays combustion-supporting, as to accelerate heat radiation, the molten stain of timely removal effect, can also effectively prevent the molten nozzle that makes progress bounce-back and get into laser cutting head 9 that steeps, thus the protection eyeglass.The laser cutting head 9 of this execution mode has focus adjusting mechanism; Can adopt the manual perhaps mode of automatic focusing to adjust the focusing effect of focus lamp; Make the focus point of laser beam on cutting zone have minimum diameter and maximum laser power density, thereby improve cutting accuracy.
The concrete shape of pole piece motion path and length by the position of cutting backing plate 20 and unreel assembly 2 and rolling assembly 18 between a plurality of deflector rolls and other assemblies decisions that are provided with.In this execution mode; Tension control mechanism 4; Brush dust dust suction subassembly 5,7 is successively set on and unreels between assembly 2 and the cutting backing plate 20, and tension control mechanism 4 comprises pneumatic control valve and the cylinder that links to each other with pneumatic control valve, and pneumatic control valve is an electromagnetically operated valve; Accurately control cylinder internal pressure and utilize this pressure to control the size of pole piece tension force makes the tension force of pole piece keep constant; The tow sides that brush dust dust suction subassembly 5,7 is respectively applied for pole piece carry out brush dust and dust suction, make the pole piece surface clean that is delivered on the cutting backing plate 20 dustless.Brush dust dust suction subassembly 13, send fixed length assembly 14 and tension control mechanism 17 successively on the pole piece motion path between cutting backing plate 20 and the rolling assembly 18; Brush dust dust suction subassembly 13 is used for pole piece two-sided carried out secondary brush dust and dust suction simultaneously, makes the pole piece surface clean after the cutting dustless; Send pole piece that fixed length assembly 14 is used under the driving of servomotor, will having certain-length from unreel assembly 2 one ends to the traction of rolling assembly 18 1 ends to cutting backing plate 20; Particularly; It detects the movement length of pole piece through the encoder 8 that is arranged on the pole piece motion path between brush dust dust suction subassembly 7 and the cutting backing plate 20, and utilizes detected length control servomotor according to the continuous conveying pole piece of certain-length; Tension control mechanism 17 is similar with the purposes of tension control mechanism 4.
In the pole piece cutting process, can produce the cutting waste material usually, laser cutting is because speed is fast, power density is high, also can produce certain dust and smog.The sidepiece of the cutting backing plate 20 of this execution mode is provided with waste material output precision 16; This waste material output precision 16; Comprise hairbrush and drive the driver that is connected with hairbrush, driver can be direct current machine, is used to drive the waste material that the hairbrush brush is excised down; Waste material output precision 16 can be arranged on a side and the position of cutting backing plate 20 output pole plates a little less than cutting backing plate 20, makes things convenient for waste material under action of gravity, to drop out automatically.The both sides up and down of cutting backing plate 20 are provided with wind-force dust suction subassembly 11 and 21 respectively, are respectively applied under the effect of blower fan, to absorb dust and the smog that laser cutting produced, and can reduce the dust on the pole piece, reduce simultaneously to pollute.
This execution mode in order to improve cutting accuracy, is also rectified a deviation to pole piece with rolling assembly 18 pole pieces one end unreeling assembly 2 respectively in the process of transmitting stage sheet, avoids its position at Width to squint.Particularly; This execution mode is provided with correlation deflection correction sensor 3 on the pole piece motion path that unreels between assembly 2 and the tension control mechanism 4, deflection correction sensor 3 is connected with the control system signal, when deflection correction sensor 3 detects the edge offset preposition of pole piece; Send signal to control system; Control system is that may command unreels the position that assembly 2 is corrected pole piece, guarantees feed direction, so that improve cutting accuracy.This execution mode is provided with also correlation deflection correction sensor 15 on the pole piece motion path between tension control mechanism 17 and the rolling assembly 18; Its effect is similar with deflection correction sensor 3; Be used to detect the position of pole piece and when skew takes place pole piece, send signal to control system, the rewinding direction is guaranteed in the position that makes control system control rolling assembly 18 correct pole piece; So that form neat material volume, for subsequent technique is provided convenience.According to concrete needs, correlation deflection correction sensor 3 is also replaceable to make deflection correction sensor for reflecting.
In conjunction with shown in Figure 3, installation and control software in the control system of this execution mode is used for the entire work process of lug make-up machine is controlled.Control system with unreel assembly 2, rolling assembly 18, encoder 8, send signals such as fixed length assembly 14, deflection correction sensor to be connected, and be connected with laser cutting head 9 signals through laser controller, be used for these assemblies are controlled.Control system also links to each other with devices such as touch-screen, PLC controller, industrial computers 6; So that operating personnel start and stop laser cutting and tablet pattern file or Control Parameter, also can revise flexibly graphic file and Control Parameter according to operating personnel's real needs.
In conjunction with Fig. 4 and Fig. 5, the control procedure of this execution mode is following:
The lug make-up machine of this execution mode lithium battery pole slice and lug forming method are used for the film-making technology of both positive and negative polarity pole piece; It directly cuts on pole piece through control system and laser cutting head and forms lug; Not only speed is fast, precision is high, for subsequent technique provides great convenience, and control procedure is very flexible, the scope of application also very extensively; For example can draw pattern cut flexibly or the concrete size of cutting parameter with the lug of design demand cutting is set; Can preserve and revise pattern cut or cutting parameter, the spacing between each lug can be set flexibly, the deviation position of laser beam modulation head assembly can be set; Cutting curve to complicacy also can be provided with different cutting speeds at straight line portion and corner part, can also the pole piece of differing heights be cut.
The lug make-up machine of battery pole piece and lug forming method are particularly useful for great-capacity power battery in this execution mode, and the pole piece of processing can directly be reeled and formed square or cylindrical electric core.
Above content is to combine concrete execution mode to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace.
Claims (10)
1. the lug make-up machine of a lithium battery pole slice; It is characterized in that; Comprise and unreel assembly (2), cutting backing plate (20), laser cutting head (9), rolling assembly (18) and control system; Said cutting backing plate (20) is placed on the said pole piece motion path that unreels between assembly (2) and the said rolling assembly (18); Said laser cutting head (9) is installed in directly over the said cutting backing plate (20), and said control system is connected with the said assembly (2), laser cutting head (9), rolling assembly (18) signal of unreeling.
2. lug make-up machine as claimed in claim 1 is characterized in that, also comprises sending fixed length assembly (14), and the said fixed length assembly (14) that send is arranged on the pole piece motion path between said cutting backing plate (20) and the said rolling assembly (18).
3. lug make-up machine as claimed in claim 1 is characterized in that, said cutting backing plate (20) sidepiece also is provided with waste material output precision (16), and said waste material output precision (16) comprises hairbrush and drives the driver that is connected with said hairbrush.
4. lug make-up machine as claimed in claim 1; It is characterized in that, on the said pole piece motion path that unreels between assembly (2) and the said cutting backing plate (20) and/or on the pole piece motion path between said cutting backing plate (20) and the said rolling assembly (18) at least one brush dust dust suction subassembly is set also.
5. lug make-up machine as claimed in claim 1; It is characterized in that, on the said pole piece motion path that unreels between assembly (2) and the said cutting backing plate (20) and on the pole piece motion path between said cutting backing plate (20) and the said rolling assembly (18) tension control mechanism is set all.
6. lug make-up machine as claimed in claim 1 is characterized in that, has on the said cutting backing plate (20) and the relative cutting zone of said laser cutting head (9), and said cutting zone adopts nitrogen protection.
7. lug make-up machine as claimed in claim 1 is characterized in that, said cutting backing plate (20) both sides up and down is provided with the wind-force dust suction subassembly respectively.
8. lug make-up machine as claimed in claim 1; It is characterized in that; On the said pole piece motion path that unreels between assembly (2) and the said cutting backing plate (20) and on the pole piece motion path between said cutting backing plate (20) and the said rolling assembly (18) the correction inductor is set all, said correction inductor also is connected with said control system signal.
9. like each described lug make-up machine in the claim 1 to 8; It is characterized in that; Also comprise frame (22), said assembly (2), cutting backing plate (20), laser cutting head (9), rolling assembly (18) and the control system of unreeling all is installed on the said frame (22).
10. the lug forming method of a lithium battery pole slice is characterized in that, may further comprise the steps:
Steps A: will be delivered on the cutting backing plate (20) from the pole piece that unreels assembly (2);
Step B: utilize laser cutting head (9), according to preset pattern cut or cutting parameter the pole piece (100) on the cutting backing plate (20) is cut and form lug (200);
Step C: the pole piece after will cutting (100) is delivered to rolling assembly (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210149331.2A CN102709522B (en) | 2012-05-15 | 2012-05-15 | Terminal forming machine and method for pole piece of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210149331.2A CN102709522B (en) | 2012-05-15 | 2012-05-15 | Terminal forming machine and method for pole piece of lithium battery |
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| Publication Number | Publication Date |
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| CN102709522A true CN102709522A (en) | 2012-10-03 |
| CN102709522B CN102709522B (en) | 2014-12-10 |
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| CN201210149331.2A Active CN102709522B (en) | 2012-05-15 | 2012-05-15 | Terminal forming machine and method for pole piece of lithium battery |
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Cited By (18)
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| CN103331525A (en) * | 2013-07-23 | 2013-10-02 | 东莞市铭丰包装品制造有限公司 | Numerical control laser mould-cutting machine |
| CN104051707A (en) * | 2013-03-12 | 2014-09-17 | 三星Sdi株式会社 | Connecting sheet supplying device and electrode assembly manufacturing device for secondary battery |
| CN104942445A (en) * | 2015-05-22 | 2015-09-30 | 深圳吉阳智云科技有限公司 | Method of using laser to cut pole piece |
| CN105397305A (en) * | 2015-11-24 | 2016-03-16 | 深圳市海目星激光科技有限公司 | High-speed and high-precision pole lug cutting method and equipment based on encoder counting |
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| CN107240722A (en) * | 2017-07-05 | 2017-10-10 | 深圳吉阳智能科技有限公司 | The core of lithium ion cell bag up- coiler of laser film-making |
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| CN108698172A (en) * | 2017-06-29 | 2018-10-23 | 深圳市大疆创新科技有限公司 | The cutting method and equipment of battery pole piece |
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| CN110270764A (en) * | 2018-03-15 | 2019-09-24 | 宁德时代新能源科技股份有限公司 | Pole piece die cutting equipment |
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| CN107225333A (en) * | 2017-07-06 | 2017-10-03 | 深圳市海目星激光科技有限公司 | A kind of pole piece forming equipment |
| CN107225333B (en) * | 2017-07-06 | 2024-03-19 | 海目星激光科技集团股份有限公司 | Pole piece forming equipment |
| CN110270764A (en) * | 2018-03-15 | 2019-09-24 | 宁德时代新能源科技股份有限公司 | Pole piece die cutting equipment |
| CN109967895A (en) * | 2019-03-18 | 2019-07-05 | 北京金橙子科技股份有限公司 | A kind of tab design system of processing |
| CN114161168A (en) * | 2022-02-11 | 2022-03-11 | 深圳市兴禾自动化股份有限公司 | Battery pole piece manufacturing production line and pole piece manufacturing process thereof |
| CN114985970A (en) * | 2022-06-09 | 2022-09-02 | 深圳泰德激光技术股份有限公司 | Tab cutting method, device and equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN102709522B (en) | 2014-12-10 |
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