CN107790883A - A kind of laser seal system and method for electrokinetic cell - Google Patents
A kind of laser seal system and method for electrokinetic cell Download PDFInfo
- Publication number
- CN107790883A CN107790883A CN201710955195.9A CN201710955195A CN107790883A CN 107790883 A CN107790883 A CN 107790883A CN 201710955195 A CN201710955195 A CN 201710955195A CN 107790883 A CN107790883 A CN 107790883A
- Authority
- CN
- China
- Prior art keywords
- laser
- electrokinetic cell
- welder
- mobile base
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The present invention relates to laser welding field, more particularly to a kind of laser seal system and method for electrokinetic cell, the laser seal system includes workbench, welder and middle control unit, the workbench includes Mobile base and motor, electrokinetic cell is placed with the Mobile base, the motor drives laser seal track of the Mobile base along electrokinetic cell to move；The welder is set on the table, and sends laser beam towards electrokinetic cell, the welder, electrokinetic cell is welded；Unit is controlled in this to be connected with motor and welder respectively, unit is controlled in this power of laser beam is sent according to the translational speed that lower mobile base is driven in motor, regulation welder.The laser seal system and method send the power of laser beam by the translational speed control welder of Mobile base, prevent the corner of electrokinetic cell seam track in high-speed welding from forming weld seam and staying, superfuse, improve the welding efficiency and welding quality of electrokinetic cell.
Description
Technical field
The present invention relates to laser welding field, and in particular to a kind of laser seal system and method for electrokinetic cell.
Background technology
With the development of the social economy, problem of environmental pollution has become focus of concern, and vehicle exhaust is
One of main source of environmental pollution, environmentally friendly new-energy automobile will turn into future automobile industrial expansion direction.At present, power
Battery has been widely used as the power source of new-energy automobile, but the production of electrokinetic cell in itself still has some and asked
Topic, such as endurance, security, battery, battery production and production efficiency.
New-energy automobile industry is developed rapidly, and the housing seal welding quality and production efficiency of electrokinetic cell are all proposed
Higher requirement.At present, the laser of housing of power cell seal welding is typically continuous using YAG pulse lasers or optical fiber
Laser, the speed of welding of pulse laser are generally 3mm/s to 15mm/s, and optical fiber continuous wave laser speed of welding is generally
30mm/s to 150mm/s, production efficiency need to be continuously available raising.
Laser welding head motion is driven usually using triaxial movement platform, so as to carry out Antiinterference, each axle is at a high speed
Servomotor or high-speed LEM driving.In the welding track of battery cover board, surrounding has radius for 2 fillets for arriving 3mm.When
When the speed of service of triaxial movement platform exceedes certain value, speed decline can be produced when running at track corner, although can
Speed is avoided to decline in a manner of by continuing to improve motor performance, but with the rising for requiring speed, its cost and motor
Volume can be also exponentially increased, and which hinders its business application.If corner solder reduction of speed when not solving the problems, such as high-speed welding,
The corner of seam track can form the defects of weld seam is stayed, superfused when then carrying out high-speed welding, influence product quality.
Therefore, a kind of electrokinetic cell laser seal system for being capable of turning reduction of speed and efficiency high in welding track is designed
And one of method, the problem of being always those skilled in the art's primary study.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of electrokinetic cell
Laser seal system, solve the corner of electrokinetic cell seam track in high-speed welding and can form weld seam and stay, superfuse etc. to ask
Topic.
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of electrokinetic cell
Laser seal method, solve the corner of electrokinetic cell seam track in high-speed welding and can form weld seam and stay, superfuse etc. to ask
Topic.
In order to solve the above technical problems, the present invention provides a kind of laser seal system of electrokinetic cell, the laser seal
System includes workbench, welder and middle control unit, wherein,
Workbench, the workbench include Mobile base and motor, electrokinetic cell are placed with the Mobile base, and motor driving moves
Move dynamic laser seal track of the seat along electrokinetic cell；
Welder, the welder are set on the table, and send laser beam towards electrokinetic cell, the welder,
And the laser beam is incident on laser seal track, and electrokinetic cell is welded；
Middle control unit, control unit is connected with motor and welder respectively in this, control unit controlled motor and welding in this
Device works, and sends the power of laser beam according to the translational speed that lower mobile base is driven in motor, regulation welder.
Wherein, preferred version is：The translational speed of power and Mobile base that the welder sends laser beam meets public
Formula：P=-0.006v2+14.51v+206, wherein, P is the power that welder sends laser beam, and v is the mobile speed of Mobile base
Degree.
Wherein, preferred version is：The Mobile base is provided with x shifting axles and y shifting axles, and the motor includes x-axis motor
With y-axis motor, the x shifting axles move under the driving of x-axis motor along x directions, and the y shifting axles are under the driving of y-axis motor along y
Move in direction.
Wherein, preferred version is：The welder includes laser, plumb joint and optical fiber, the laser and plumb joint
Connected by optical fiber, the laser drives plumb joint to send laser beam by optical fiber.
Wherein, preferred version is：The laser seal system also includes speed measuring device, the speed measuring device include grating scale and
Grating ruler reading head, the grating scale are arranged on the plumb joint, and the grating ruler reading head is arranged on the Mobile base, the grating scale
Read head moves with the movement of Mobile base, the motion track of the optical grating ruler measurement grating ruler reading head.
Wherein, preferred version is：The welder also includes air blowing portion, and the air blowing portion is blown out against the electrokinetic cell
Protective gas.
Wherein, preferred version is：The protective gas is argon gas.
Wherein, preferred version is：The workbench also includes clamping device, and the clamping device is used to clamp the power electric
Pond.
The present invention also provides a kind of laser seal method of electrokinetic cell, the laser seal method comprises the following steps：
Electrokinetic cell is placed on Mobile base, motor drives laser seal track of the Mobile base along electrokinetic cell to move
It is dynamic；
According to the translational speed of Mobile base, regulation welder sends the power of laser beam；
Welder sends laser beam, and electrokinetic cell is welded.
Wherein, preferred version is：The translational speed of power and Mobile base that the welder sends laser beam meets public
Formula：P=-0.006v2+ 14.51v+206, wherein, P is the power that welder sends laser beam, and v is the mobile speed of Mobile base
Degree.
The beneficial effects of the present invention are compared with prior art, the present invention is by designing a kind of laser of electrokinetic cell
Closure system and method, control welder to send the power of laser beam by the translational speed of Mobile base, prevent electrokinetic cell
In high-speed welding, the corner of seam track forms weld seam and stays, superfuse, the sealing of electrokinetic cell fusion penetration and is melted everywhere
It is wide consistent, improve the welding efficiency and welding quality of electrokinetic cell；In addition, the laser seal system architecture is simple, each device is tight
Close fit uses, if a part that need to take out damage that is damaged is repaired, contributes to staff to operate.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the schematic diagram of laser seal system of the present invention；
Fig. 2 is power of the present invention and the curve map of velocity variations；
Fig. 3 is power of the present invention and the tendency chart of velocity variations；
Fig. 4 is the schematic diagram one of laser seal method of the present invention；
Fig. 5 is the schematic diagram two of laser seal method of the present invention.
Embodiment
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
As shown in figure 1, the present invention provides a kind of preferred embodiment of laser seal system.
A kind of laser seal system of electrokinetic cell, the laser seal system include workbench 100, welder and in
Unit 300 is controlled, wherein, workbench 100, the workbench 100 includes Mobile base and motor, and electrokinetic cell is placed with the Mobile base
120, the motor drives laser seal track high-speed mobile of the Mobile base along electrokinetic cell 120；Welder, the welder
It is located on workbench 100, and towards electrokinetic cell 120, the welder sends laser beam, and the laser beam is incident to laser envelope
On mouth track, electrokinetic cell 120 is welded；Middle control unit 300, control in this unit 300 respectively with motor and welder
Connection, control controlled motor of unit 300 and welder work, pre-enter the power of laser beam and the mobile speed of Mobile base in this
The function of degree, controls translational speed of the unit 300 according to Mobile base in this, regulation welder sends the power of laser beam.This swashs
Light closure system can prevent the corner of the seam track in high-speed welding of electrokinetic cell 120 from forming weld seam and staying, superfuse, and make
Fusion penetration is consistent with molten wide everywhere for the sealing of electrokinetic cell, improves the welding efficiency and welding quality of electrokinetic cell 120.
Wherein, reference picture 2 and Fig. 3, by fitting experimental data, the welder sends power and the movement of laser beam
The translational speed of seat meets formula：P=-0.006v2+ 14.51v+206, wherein, P is the power that welder sends laser beam,
V is the translational speed of Mobile base.When the Mobile base drives the high-speed mobile of electrokinetic cell 120 to the corner of laser seal track
When, the middle control unit 300 show that welder sends the power of laser beam according to formula, realizes weld seam fusion penetration and molten wide everywhere
Unanimously, the welding efficiency and welding quality of electrokinetic cell 120 are improved.Preferably, the translational speed of the Mobile base is 20mm/s
To between 500mm/s.In order to further improve the surface quality of position while welding, it is necessary to using+2mm extremely+4mm defocusing amounts.
Further, the Mobile base is provided with x shifting axles 111 and y shifting axles 112, the motor include x-axis motor and
Y-axis motor, the x-axis motor and y-axis motor are linear electric motors, and the x shifting axles 111 move under the driving of x-axis motor along x directions
Dynamic, so as to drive electrokinetic cell 120 to be moved along x directions, the y shifting axles 112 move under the driving of y-axis motor along y directions,
So as to drive electrokinetic cell 120 to be moved along y directions.Wherein, the component velocity of the x shifting axles 111 and point speed of y shifting axles 112
It is the translational speed of Mobile base after degree synthesis.
Specifically, the welder includes laser 211, plumb joint 212 and optical fiber 213, and the laser 211 is Gao Gong
Rate laser, the plumb joint 212 are fixed on the Mobile base, and the laser 211 and plumb joint 212 are connected by optical fiber 213.
In welding process, the plumb joint 212 is fixed, and the Mobile base drives electrokinetic cell 120 to be moved along laser seal track
Dynamic, laser beam is transferred to plumb joint 212 by the laser 211 by optical fiber 213；The inside of plumb joint 212 is provided with optical frames
Piece, after laser beam is received, integrated, the hot spot of size needed for acquisition, send LASER BEAM WELDING electrokinetic cell 120.It is excellent
Selection of land, the optical fiber 213 are flexible optical fibre, are easy to connecting laser 211 and plumb joint 212.
Further, the laser seal system also includes speed measuring device, and the speed measuring device includes grating scale, grating scale is read
Head and controller, the grating scale are installed on the plumb joint 212, and the grating scale includes x to grating scale and y to grating scale, the light
Grid ruler reading head is installed on the x shifting axles 111 to grating ruler reading head, the x to grating ruler reading head and y including x to grating ruler reading head,
The y is installed on the y shifting axles 112 to grating ruler reading head, and the x moves to grating ruler reading head with the movement of x shifting axles 111
Dynamic, the y moves to grating ruler reading head with the movement of y shifting axles 112.The x is provided with to grating scale to be measured, for measuring x
To the motion track of grating ruler reading head, so as to draw the speed of x shifting axles；The y is also provided with to grating scale to be measured, for measuring
Motion track from y to grating ruler reading head, so as to draw the speed of y shifting axles；The controller is by calculating, by x shifting axles 111
After component velocity and the synthesis of the component velocity of y shifting axles 112, the translational speed of the Mobile base is drawn.
Certainly, the speed measuring device is not limited only to above-mentioned, is only needed that the speed of Mobile base can be measured, is not limited herein
It is fixed.
More specifically, the welder also includes air blowing portion 220, the air blowing portion 220 blows against the electrokinetic cell 120
Go out protective gas.Preferably, the protective gas is argon gas.Argon gas is inert gas, is prevented in welding process, the too high damage of temperature
Bad electrokinetic cell 120.
Further, the workbench 100 also includes clamping device 130, and the clamping device 130 clamps the power electric
Pond 120.The unlimited embodiment for determining clamping device 130 herein, only need electrokinetic cell 120 can be clamped in into workbench
On 100.
In the present embodiment, the middle control unit 300 also includes a display screen 310, and the display screen 310, which is used to show, to be welded
Device sends the parameter such as the power of laser beam and the translational speed of Mobile base.
As shown in Figure 4 and Figure 5, the present invention provides a kind of preferred embodiment of laser seal method.
A kind of laser seal method of electrokinetic cell, it is characterised in that the laser seal method comprises the following steps：
Step 10：Electrokinetic cell is placed on Mobile base, motor drives laser seal of the Mobile base along electrokinetic cell
Move track；Step 20：According to the translational speed of Mobile base, regulation welder sends the power of laser beam；Step 30：Welding
Device sends laser beam, and electrokinetic cell is welded.
Wherein, the translational speed of power and Mobile base that the welder sends laser beam meets formula：P=-
0.006v2+ 14.51v+206, wherein, P is the power that welder sends laser beam, and v is the translational speed of Mobile base.
Further, further comprising the steps of 15 before the step 20：Grating scale is installed on Mobile base, pacified on plumb joint
Fill grating ruler reading head, the motion track of optical grating ruler measurement grating ruler reading head.By calculating, the mobile speed of grating ruler reading head is drawn
Degree, so as to draw the translational speed of the workbench.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Any modification made within the spirit and principles of the invention, equivalent substitution, improve etc., it should be included in the guarantor of the present invention
In the range of shield.
Claims (10)
- A kind of 1. laser seal system of electrokinetic cell, it is characterised in that：The laser seal system includes workbench, welding dress Put with middle control unit, wherein,Workbench, the workbench include Mobile base and motor, electrokinetic cell are placed with the Mobile base, motor driving Mobile base Moved along the laser seal track of electrokinetic cell；Welder, the welder are set on the table, and towards electrokinetic cell, the welder sends laser beam, and should Laser beam is incident on laser seal track, and electrokinetic cell is welded；Middle control unit, control unit is connected with motor and welder respectively in this, control unit controlled motor and welder in this Work, and the power of laser beam is sent according to the translational speed that lower mobile base is driven in motor, regulation welder.
- 2. laser seal system according to claim 1, it is characterised in that：The welder sends the power of laser beam Meet formula with the translational speed of Mobile base：P=-0.006v2+ 14.51v+206, wherein, P is that welder sends laser beam Power, v be Mobile base translational speed.
- 3. laser seal system according to claim 2, it is characterised in that：The Mobile base is provided with x shifting axles and y is moved Moving axis, the motor include x-axis motor and y-axis motor, and the x shifting axles are moved under the driving of x-axis motor along x directions, and the y is moved Moving axis moves under the driving of y-axis motor along y directions.
- 4. laser seal system according to any one of claims 1 to 3, it is characterised in that：The welder includes laser Device, plumb joint and optical fiber, the laser are connected with plumb joint by optical fiber, and the laser is sent sharp by optical fiber driving plumb joint Light beam.
- 5. laser seal system according to claim 4, it is characterised in that：The laser seal system also includes the dress that tests the speed Put, the speed measuring device includes grating scale and grating ruler reading head, and the grating scale is arranged on the plumb joint, grating ruler reading head peace On the Mobile base, the grating ruler reading head moves with the movement of Mobile base, the optical grating ruler measurement grating ruler reading head Motion track.
- 6. laser seal system according to claim 4, it is characterised in that：The welder also includes air blowing portion, should Air blowing portion blows out protective gas against the electrokinetic cell.
- 7. laser seal system according to claim 6, it is characterised in that：The protective gas is argon gas.
- 8. laser seal system according to claim 4, it is characterised in that：The workbench also includes clamping device, should Clamping device is used to clamp the electrokinetic cell.
- 9. a kind of laser seal method of electrokinetic cell, it is characterised in that the laser seal method comprises the following steps：Electrokinetic cell is placed on Mobile base, motor drives laser seal track of the Mobile base along electrokinetic cell to move；According to the translational speed of Mobile base, regulation welder sends the power of laser beam；Welder sends laser beam, and electrokinetic cell is welded.
- 10. laser seal method according to claim 9, it is characterised in that：The welder sends the work(of laser beam Rate and the translational speed of Mobile base meet formula：P=-0.006v2+ 14.51v+206, wherein, P is that welder sends laser The power of beam, v are the translational speed of Mobile base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955195.9A CN107790883A (en) | 2017-10-13 | 2017-10-13 | A kind of laser seal system and method for electrokinetic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955195.9A CN107790883A (en) | 2017-10-13 | 2017-10-13 | A kind of laser seal system and method for electrokinetic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107790883A true CN107790883A (en) | 2018-03-13 |
Family
ID=61533061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710955195.9A Pending CN107790883A (en) | 2017-10-13 | 2017-10-13 | A kind of laser seal system and method for electrokinetic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107790883A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147359A (en) * | 2021-12-31 | 2022-03-08 | 广东国玉科技有限公司 | Laser welding method and laser welding equipment for lead of square lithium battery |
| CN114799518A (en) * | 2022-05-20 | 2022-07-29 | 武汉逸飞激光股份有限公司 | Laser welding control method and device for cylindrical battery cell seal |
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| JPH08315789A (en) * | 1995-03-14 | 1996-11-29 | Nippondenso Co Ltd | Manufacture of square battery |
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| CN104607805A (en) * | 2015-01-12 | 2015-05-13 | 飞虎激光科技有限公司 | Method for laser cutting of corner |
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2017
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212985A (en) * | 1995-02-07 | 1996-08-20 | Shin Kobe Electric Mach Co Ltd | Sealed square battery nd manufacture thereof |
| US5879416A (en) * | 1995-03-13 | 1999-03-09 | Nippondenso Co., Ltd. | Method of manufacturing battery having polygonal case |
| JPH08315789A (en) * | 1995-03-14 | 1996-11-29 | Nippondenso Co Ltd | Manufacture of square battery |
| JP2002045983A (en) * | 2000-08-07 | 2002-02-12 | Sony Corp | Equipment for welding and method for welding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147359A (en) * | 2021-12-31 | 2022-03-08 | 广东国玉科技有限公司 | Laser welding method and laser welding equipment for lead of square lithium battery |
| CN114799518A (en) * | 2022-05-20 | 2022-07-29 | 武汉逸飞激光股份有限公司 | Laser welding control method and device for cylindrical battery cell seal |
| CN114799518B (en) * | 2022-05-20 | 2022-09-30 | 武汉逸飞激光股份有限公司 | Laser welding control method and device for cylindrical battery cell seal |
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Application publication date: 20180313 |