CN109585902A - The electric core winding system and method for adjustable tab dislocation - Google Patents
The electric core winding system and method for adjustable tab dislocation Download PDFInfo
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- CN109585902A CN109585902A CN201811586253.6A CN201811586253A CN109585902A CN 109585902 A CN109585902 A CN 109585902A CN 201811586253 A CN201811586253 A CN 201811586253A CN 109585902 A CN109585902 A CN 109585902A
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- 238000004804 winding Methods 0.000 title claims abstract description 65
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- 238000002955 isolation Methods 0.000 claims abstract description 39
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- 238000005096 rolling process Methods 0.000 claims abstract 2
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- 230000006835 compression Effects 0.000 claims description 16
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- 238000005259 measurement Methods 0.000 description 11
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- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
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- 229920006362 Teflon® Polymers 0.000 description 3
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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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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- 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
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Abstract
The present invention provides a kind of electric core winding system and method for adjustable tab dislocation, the electric core winding system of tab dislocation is wherein adjusted, including rolling up needle, cathode pole piece unwinding mechanism, anode pole piece unreeling structure, isolation film unreels structure, precompressed mechanism, tab dislocation testing agency and control system, cathode pole piece unwinding mechanism, anode pole piece unreeling structure and isolation film unreel structure and are electrically connected to the control system and butt up against volume needle, precompressed mechanism is electrically connected control system and carries out precompressed to through battery core made of volume needle winding, tab dislocation testing agency be electrically connected connected control system and to battery core carry out tab dislocation detection, cathode thickness measuring mechanism is successively arranged in cathode pole piece unwinding mechanism, cathode length measuring mechanism, hick regulating mechanism, anode pole piece unreeling structure is equipped with anode thickness measuring mechanism, hick regulating mechanism is according to control The instruction of system processed and control and certain pressure applied to cathode sheet cathode sheet surface is made to generate impression to change the thickness of cathode sheet.
Description
Technical field
The present invention relates to the electric core winding system of electric core winding technical field more particularly to a kind of dislocation of adjustable tab and
The electric core winding method of adjustable tab dislocation.
Background technique
Currently, winding process is the prevailing technology of square electric cell in secondary cell production field, high with battery core yield,
It has a safety feature, the features such as energy density is high.
In winding process, currently used way is first to be die cut to pole piece, then by cathode sheet, anode pole piece, 2
Layer isolation film by the sequence of " isolation film-cathode sheet-isolation film-anode pole piece ", complete by the winding fitting on volume needle.Due to
It has been completed that the die-cutting process of pole piece, tab spacing dimension can not adjust in real time before electric core winding, can there is following disadvantage
End:
1, requirement of the fixed cross cutting size to material thickness consistency is relatively high, during volume production, if material thickness
Inconsistent with standard thickness, can still result in tab dislocation, (by taking 40 circle of winding as an example, as material thickness difference 1um, tab misplaces
Measure the assembly that naked battery core back segment process is influenced up to 4mm) and welding conveyance capacity；
2, the influence with the thickness fluctuation of a roll of pole piece to winding tab degree of registration is not considered, therefore is caused in winding work
Sequence needs operator frequently adjust by tearing patch Teflon etc. modes and rolls up the perimeter of needle and adjust tab magnitude of misalignment, reduces and set
Standby utilization rate and product is caused largely to waste；Meanwhile winding apparatus is intangibly improved to the competency profiling of personnel.
To solve the above problems, being badly in need of providing a kind of electric core winding method or system, can have both to material adaptability
By force, the features such as tab dislocation is small, while product excellent rate and security performance are improved, reduce control difficulty and manufacturing cost.
Summary of the invention
The object of the present invention is to provide a kind of electric core winding system and method for adjustable tab dislocation, can be reduced tab
Magnitude of misalignment improves the consistency of cell polar ear width, can effectively improve the homogeneity of product of subsequent handling such as welding sequence；It keeps away
Battery core caused by tab misplaces is exempted from and has scrapped to misplace the frequent change of lap of bring with tab, thus has improved product excellent rate, reduce
Material waste；Teflon and change of lap bring time loss are frequently pasted before reduction in production process, improve equipment has
Imitate utilization rate；Effectively reduce because tab misplace bring short-circuit risks, while also reduce battery core manufacture and use during
Physical expansion and electrochemical expansion bring security risk.
To achieve the above object, first aspect present invention provides a kind of electric core winding system of adjustable tab dislocation,
Structure, precompressed mechanism, tab dislocation inspection are unreeled including volume needle, cathode pole piece unwinding mechanism, anode pole piece unreeling structure, isolation film
It surveys mechanism and control system, the cathode pole piece unwinding mechanism, the anode pole piece unreeling structure and the isolation film unreels knot
Structure, which connects, is electrically connected with the control system and butts up against the volume needle, and the precompressed mechanism is electrically connected control system and described in warp
It rolls up battery core made of needle winding and carries out precompressed, tab dislocation testing agency is electrically connected connected control system and rolls up to through the volume needle
The battery core made of carries out tab dislocation detection, be successively arranged in the cathode pole piece unwinding mechanism cathode thickness measuring mechanism,
Cathode length measuring mechanism, hick regulating mechanism, the anode pole piece unreeling structure is equipped with anode thickness measuring mechanism, described
Hick regulating mechanism is controlled according to the instruction of the control system to be applied certain pressure to cathode sheet and makes cathode sheet table
Face generates impression to change the thickness of cathode sheet.
Volume needle, cathode pole piece unwinding mechanism, anode pole in the electric core winding system of adjustable tab dislocation of the invention
Piece unreeling structure, isolation film unreel structure, precompressed mechanism and tab dislocation testing agency and are all electrically connected with the control system, can
The timeliness and accuracy for guaranteeing each process, by the cathode thickness measuring mechanism that is successively arranged in cathode pole piece unwinding mechanism,
Cathode length measuring mechanism, hick regulating mechanism successively can carry out thickness survey to cathode sheet during cathode sheet unreels
Amount, linear measure longimetry, thickness are adjusted, that is, it is meant that are measured in real time the thickness of cathode sheet, determine and be moved to finger
It positions and carries out thickness adjusting on the cathode sheet set and make cathode sheet table and applying certain pressure to cathode sheet
Face generates impression to change the thickness of cathode sheet, and the thickness of entire battery core is adjusted by the adjusting of such cathode thickness, from
And avoid the dislocation of tab in battery core.
Second aspect of the present invention provides a kind of electric core winding method of adjustable tab dislocation, includes the following steps:
(1) cathode sheet exports
Cathode sheet is put into roll-to-roll needle, and thickness measure, length successively are carried out to the cathode sheet during unreeling
Degree measurement, thickness are adjusted；
(2) anode pole piece exports
Anode pole piece is unreeled to the volume needle, and thickness measure is carried out to the anode pole piece during unreeling；
(3) isolation film exports
Isolation film is put into roll-to-roll needle；
(4) electric core winding
The cathode sheet, the anode pole piece and the isolation film after output is wound on the volume needle,
The isolation film is isolated by the cathode sheet and the anode pole piece；
(5) tab dislocation detection
The battery core after winding is subjected to precompressed and detects tab misalignment to obtain tab magnitude of misalignment,
The thickness, which is adjusted to apply cathode sheet certain pressure, makes cathode sheet surface generate impression to change yin
The thickness of pole pole piece.
In the electric core winding method of adjustable tab dislocation of the invention, successively to cathode during cathode sheet unreels
Pole piece carries out thickness measure, linear measure longimetry, thickness adjusting, that is, it is meant that the thickness to cathode sheet is surveyed in real time
Amount, determining be moved on the cathode sheet of designated position carry out thickness adjusting and by applying certain pressure to cathode sheet
Power and so that cathode sheet surface is generated impression to change the thickness of cathode sheet, adjusted by the adjusting of such cathode thickness whole
The thickness of a battery core to avoid the dislocation of tab in battery core, thus improves the consistency of cell polar ear width, can be effective
The homogeneity of product for improving subsequent handling such as welding sequence reduces battery core and scraps with the probability of change of lap and produce because tab misplaces
Raw short-circuit risks；Such mode is easy to operate, without frequent patch Teflon during production；Importantly, logical
Cross thickness and adjust the impression to be formed and increase gap inside battery core, reduce during battery core manufacture and use physical expansion and
Chemically expansible bring security risk.
Detailed description of the invention
Fig. 1 is the schematic diagram of an embodiment of the electric core winding system that adjustable tab of the invention misplaces.
An embodiment of hick regulating mechanism shows in the electric core winding system that Fig. 2 misplaces for adjustable tab of the invention
It is intended to.
Element explanation
The electric core winding system of tab dislocation is adjusted in 100-；1- volumes of needle；2- cathode pole piece unwinding mechanism；21- cathode is thick
Spend measuring mechanism；22- cathode length measuring mechanism；23- hick regulating mechanism；231- knurling mechanism；2311- fixes bracket；
The first card slot of 23111-；2312- sliding support；The second card slot of 23121-；The upper pressure roller of 2313-；2314- lower compression roller；23141- is convex
Point rubber roller；Smooth roller bar under 23142-；The upper pressure roller shaft of 2315-；2316- pushes roll shaft；232- servo motor；2321- ball wire
Thick stick；2322- servo motor；233- pressure sensor；24- cathode terminal is oriented to tension roll assembly；25- buffers tension roll assembly；3- anode
Pole piece winding mechanism；31- anode thickness measuring mechanism；32- anode lengths measuring mechanism；33- anode tap is oriented to tension roll assembly；4-
Isolation film unreeling structure；5- precompressed mechanism；6- tab dislocation testing agency；7- cathode sheet；8- anode pole piece；9- isolation film.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.It should be noted that unless otherwise specific defined restriction, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, can be directly connected, can also be with
It is that indirectly connected through an intermediary, can be the connection in two elements.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
The first aspect of the present invention provides the electric core winding system of adjustable tab dislocation, including volume needle, cathode sheet
Unreeling structure, anode pole piece unreeling structure, isolation film unreel structure, precompressed mechanism, tab dislocation testing agency and control system,
Cathode pole piece unwinding mechanism, anode pole piece unreeling structure and isolation film unreel structure and are electrically connected to the control system and butt up against volume
Needle, precompressed mechanism are electrically connected control system and carry out precompressed, tab dislocation testing agency electricity to through battery core made of volume needle winding
It connects control system and carries out tab dislocation detection to through battery core made of volume needle winding, successively set in cathode pole piece unwinding mechanism
There are cathode thickness measuring mechanism, cathode length measuring mechanism, hick regulating mechanism, it is thick that anode pole piece unreeling structure is equipped with anode
Measuring mechanism is spent, hick regulating mechanism is controlled according to the instruction of control system to be applied certain pressure to cathode sheet and make cathode
Pole piece generates impression to change the thickness of cathode sheet.
Further, cathode pole piece unwinding mechanism has guiding tension roll assembly, guiding tension roll assembly guiding and drainage cathode
Pole piece is docked to volume needle.
Further, cathode thickness measuring mechanism is pinch-roller type tenthousandth micrometer, and cathode thickness measuring mechanism is set to guiding tension
Jockey pulley of the roller group close to the starting point of cathode pole piece unwinding mechanism.Thickness measure is carried out in starting point, test result is calibrated
Really, it is measured using pinch-roller type tenthousandth micrometer, measurement accuracy≤± 0.5um.
Further, cathode pole piece unwinding mechanism also has buffering tension roll assembly, and buffering tension roll assembly delays cathode sheet
Volume needle is rushed and is docked to, hick regulating mechanism is located between buffering tension roll assembly and volume needle, using buffering tension roll assembly to cathode
Pole piece carries out buffering so that the space of thickness adjusting can be carried out in order to adjust thickness and reduce tab magnitude of misalignment by providing.
Further, it is oriented between tension roll assembly and buffering tension roll assembly and cathode length measuring mechanism, cathode length is set
Measuring mechanism is encoder, and encoder is installed on the jockey pulley in buffering tension roll assembly close to guiding tension roll assembly, and encoder is used
Mobile distance, passes through thickness to determine that cathode sheet is moved to distance to a declared goal after real-time monitoring cathode sheet measurement thickness
Regulating device adjusts the thickness of cathode sheet, measurement accuracy≤± 1mm of encoder.
Further, hick regulating mechanism has knurling mechanism, servo electric jar and pressure sensor, pressure sensor sense
Answer knurling mechanism to the pressure and feedback signal of cathode sheet to servo electric jar, servo electric jar is fed back according to control system
The signal driving knurling mechanism of instruction and pressure sensor feedback applies certain pressure to cathode sheet.Control system receives
Previous cell polar ear magnitude of misalignment, cathode sheet, anode pole piece, isolation film thickness, the spacing of cathode tab, roll up needle major semiaxis
Length, the parameters such as volume needle semi-minor axis length, calculates the pressure value that knurling mechanism applies cathode sheet, servo by program
Electric cylinder applies pressure until the pressure that incudes with pressure sensor to cathode sheet according to the pressure value that control system is fed back
Value corresponds to.
Further, knurling mechanism has salient point rubber roller and the smooth rubber roller with the cooperation of salient point rubber roller, pressure sensor sense
Answer salient point rubber roller and smooth rubber roller to the pressure and feedback signal of cathode sheet to servo electric jar, servo electric jar drives salient point
Rubber roller controls the pressure applied to cathode sheet to the movement of smooth rubber roller.The softer rubber material of quality can be used in smooth rubber roller
Matter destroys cathode sheet when crossing roller between salient point rubber roller and smooth rubber roller to avoid cathode sheet, and salient point rubber roller also uses rubber
Glue material matter, salient point rubber roller be in forming bump surface on rod, thus can be in forming rough impression on cathode sheet.
Further, knurling mechanism is connect with the fixation bracket for being fixed on servo electric jar and with fixed bracket slide
Sliding support fixes fixed upper pressure roller on bracket, and the fixed lower compression roller cooperated with upper pressure roller on sliding support, upper pressure roller is smooth
Rubber roller, lower compression roller at least partially salient point rubber roller.Further, fixed branch is provided with the first card slot, and upper pressure roller passes through upper pressure
Roll shaft is arranged in the first card slot and can rotate freely on fixed bracket, and sliding support is equipped with the second card slot, under lower compression roller passes through
Pressure roller shaft is arranged in the second card slot and can be in rotating freely on sliding support.Further, fixed bracket is set along the vertical direction
There is guide rail, sliding support slides up and down along guide rail and controls salient point rubber roller and smooth rubber roller to the pressure of cathode sheet.Servo electricity
Dynamic cylinder has ball-screw and servo motor, and ball-screw is connect with sliding support, and servo motor is fixed with fixed bracket, according to
The pressure value of pressure sensor feedback adjusts ball-screw in real time and the distance between changes upper and lower pressure roller, thus control it is upper,
Lower compression roller plays the role of the depth of cup of cathode sheet to adjust cathode sheet thickness.
The second aspect of the present invention provides the electric core winding method of adjustable tab dislocation, includes the following steps:
(1) cathode sheet exports
Cathode sheet is put into roll-to-roll needle, and thickness measure, length survey successively are carried out to cathode sheet during unreeling
Amount, thickness are adjusted；
(2) anode pole piece exports
Anode pole piece is put into roll-to-roll needle, and thickness measure is carried out to anode pole piece during unreeling；
(3) isolation film exports
Isolation film is put into roll-to-roll needle；
(4) electric core winding
Cathode sheet, anode pole piece and isolation film after output is wound on volume needle, isolation film is by cathode sheet
It is isolated with anode pole piece；
(5) tab dislocation detection
Battery core after winding is subjected to precompressed and detects tab misalignment to obtain tab magnitude of misalignment,
Thickness, which is adjusted to apply cathode sheet certain pressure, makes cathode sheet surface generate impression to change cathode pole
The thickness of piece.
Further, thickness is adjusted to apply cathode sheet certain pressure to generate cathode sheet surface uneven
Impression to change the thickness of cathode sheet.Rough impression can apply pressure to cathode sheet surface by knurling mechanism
And generate, knurling structure has salient point rubber roller and the smooth rubber roller with the cooperation of salient point rubber roller.It is softer that quality can be used in smooth rubber roller
Rubber material, to avoid cathode sheet between salient point rubber roller and smooth rubber roller cross roller when destroy cathode sheet, salient point rubber roller
Also use rubber material, salient point rubber roller be in forming bump surface on rod, thus can be rough in being formed on cathode sheet
Impression.
Further, apply certain pressure and obtained by importing the calculation formula of following formula,
P=α × [(Ln+1+βm-4a+4b-2πb)/2nπ-x-y-2z]
In formula: P- cathode sheet adjusts application pressure value when thickness, kgf；α-pressure adjustment factor；β-tab dislocation is repaired
Positive coefficient, 0 < β < 1；The previous cell polar ear magnitude of misalignment of m-；X, y, z-cathode sheet, anode pole piece, isolation film thickness,
mm；Ln+1Spacing of-the n-th tab to (n+1)th tab, mm；A- volumes of needle major semiaxis length, mm；B- volumes of needle semi-minor axis length,
mm.α and β is the coefficient simulated according to previous battery core, and m is to be taken pictures to the battery core after upper one winding with camera, is passed through
Tab magnitude of misalignment obtained from its image obtains x and y value by the thickness measurements that cathode sheet and anode pole piece obtain, and z is
The thickness of isolation film itself, and general thickness is more uniform, can get before winding by measurement, the spacing of cathode tab can pass through volume
Around preceding tab cross cutting parameter and obtain, a and b value be roll up needle major semiaxis and semi-minor axis length, winding before by measurement can obtain.
This formula may be disposed at the control system in the electric core winding system of adjustable tab dislocation, and each variable can also be input to control
System, thus can real-time, automation control application pressure value.
It is described in detail below in conjunction with electric core winding system of the attached drawing for adjustable tab dislocation of the invention.
As shown in Figure 1, the electric core winding system 100 of adjustable tab dislocation, including volume needle 1, cathode pole piece unwinding mechanism
2, anode pole piece unreeling structure 3, isolation film unreel structure 4, precompressed mechanism 5, tab dislocation testing agency 6 and control system (figure
In be not shown).Cathode pole piece unwinding mechanism 2, anode pole piece unreeling structure 3 and isolation film unreel structure 4 and are electrically connected with control system
It connects and butts up against volume needle 1.Isolation film, which unreels structure 4,2 groups, thus is docked to volume needle there are two layers of isolation film 9, to be formed folded
It is set to the winding battery core of " isolation film 9- cathode sheet 7- isolation film 9- anode pole piece 8 ".Precompressed mechanism 5 is electrically connected connected control system simultaneously
It is detected to through battery core progress precompressed made of volume needle winding with preferably carrying out tab dislocation.Tab dislocation testing agency 6 is electrically connected
Connected control system simultaneously to through volume needle 1 wind made of battery core carry out tab dislocation detection, tab misplace testing agency 6 can for
The CCD camera of analytic function, analyzed by the image that CCD camera is shot with calculate on the outside of tab magnitude of misalignment and tab with
The spacing of battery core outer most edge, measurement accuracy≤± 0.05mm.
Continue as shown in Figure 1, being successively arranged cathode thickness measuring mechanism 21, cathode length in cathode pole piece unwinding mechanism 2
Measuring mechanism 22, hick regulating mechanism 23, hick regulating mechanism 23 are controlled and are applied to cathode sheet 7 according to the instruction of control system
Add certain pressure that 7 surface of cathode sheet is made to generate impression to change the thickness of cathode sheet.Cathode pole piece unwinding mechanism 1 has
Cathode terminal is oriented to tension roll assembly 24 and buffering tension roll assembly 25, and cathode terminal is oriented to the guiding of tension roll assembly 24 and drainage cathode sheet pair
It is connected to volume needle 1, cathode sheet is buffered and is docked to volume needle 1 by buffering tension roll assembly 25.Cathode thickness measuring mechanism 21 is pinch roller
Formula tenthousandth micrometer, set on cathode terminal guiding tension roll assembly 24 close to the jockey pulley of the starting point of cathode pole piece unwinding mechanism 2.Cathode terminal
It is oriented between tension roll assembly 24 and buffering tension roll assembly 25 and cathode length measuring mechanism 22 is set, cathode length measuring mechanism 22 is
Encoder, encoder are installed in buffering tension roll assembly 25 close to the jockey pulley of cathode terminal guiding tension roll assembly 24.Thickness adjustment
Mechanism 23 be located at buffering tension roll assembly 25 and volume needle 1 between, using buffering tension roll assembly 25 to cathode sheet 7 carry out buffering to
Offer can carry out the space of thickness adjusting in order to adjust thickness and reduce tab magnitude of misalignment.
As shown in Fig. 2, hick regulating mechanism 23 has knurling mechanism 231, servo electric jar 232 and pressure sensor 233,
Pressure sensor 233 incudes knurling mechanism 231 to the pressure and feedback signal of cathode sheet 7 to servo electric jar 232, and servo is electric
The signal driving knurling mechanism 231 that dynamic cylinder 232 is fed back according to control system and pressure sensor 233 applies one to cathode sheet 7
Fixed pressure.
Continue as shown in Fig. 2, knurling mechanism 231 have the fixation bracket 2311 for being fixed on servo electric jar 232 and with it is solid
The sliding support 2312 that fixed rack 2311 is slidably connected is fixed on bracket 2311 and fixes upper pressure roller 2313, on sliding support 2312
The fixed lower compression roller 2314 with the cooperation of upper pressure roller 2313, upper pressure roller 2313 is smooth rubber roller, and lower compression roller 2314 is at least partially convex
Point rubber roller, specifically, the left end of lower compression roller 2314 is smooth surface, right end is bump surface, to avoid in the pole of cathode sheet 7
Impression is formed on ear.Fixed bracket 2311 is equipped with the first card slot 23111, and upper pressure roller 2313 is arranged in the by upper pressure roller shaft 2315
One card slot 23111 can simultaneously rotate freely on fixed bracket 2311, and sliding support 2312 is equipped with the second card slot 23121, lower compression roller
2314 are arranged in the second card slot 23121 and can rotate freely on sliding support 2312 by pushing roll shaft 2316.Fixed bracket
2311 along the vertical direction be equipped with guide rail (not shown), sliding support 2312 along guide rail slide up and down and control salient point rubber roller and
Pressure of the smooth rubber roller to cathode sheet.
Continue as shown in Fig. 2, servo electric jar 232 has ball-screw 2321 and servo motor, ball-screw and sliding
Bracket connection 2312, servo motor 2322 and fixed bracket 2311 are fixed, real according to the pressure value that pressure sensor 233 is fed back
When adjust ball-screw 2321 and change upper the distance between pressure roller 2313 and lower compression roller 2314, to control upper 2313 He of pressure roller
Lower compression roller 2314 plays the role of the depth of cup of cathode sheet 7 to adjust cathode sheet thickness.
It should be noted that as shown in Figure 1, anode pole piece unreeling structure 3 is equipped with anode thickness measuring mechanism 31, anode
Linear measure longimetry mechanism 32 and anode tap are oriented to tension roll assembly 33.Anode thickness measuring mechanism 31 is pinch-roller type tenthousandth micrometer, is set to sun
The jockey pulley of starting point of the extreme guiding tension roll assembly 33 by proximal pole pole piece unreeling structure 3.Anode tap guiding tension roll assembly 33 is led
Volume needle 1 is docked to drainage anode pole piece 8.Anode tap is oriented to setting anode lengths between tension roll assembly 33 and volume needle 1 and measures
Mechanism 32, anode lengths measuring mechanism 32 are encoder, for determining the mobile distance of anode pole piece 8.
Below with reference to Fig. 1 and Fig. 2 for the function mode of the electric core winding system 100 of adjustable tab dislocation of the invention
It is illustrated.
Opening control system, cathode pole piece unwinding mechanism 2 unreel cathode sheet 7, and anode pole piece unreeling structure 3 is right
Anode pole piece 8 is unreeled, and isolation film unreels structure 4 and unreels to isolation film 9, and cathode sheet 7 successively passes through cathode thickness
Thickness measure, the guiding of cathode terminal guiding tension roll assembly 24 and the length of drainage, cathode length measuring mechanism 22 of measuring mechanism 21
Degree measurement, the buffering caching of tension roll assembly 25, thickness adjusting mechanism 23 butt up against volume needle 1 to the adjusting of 7 thickness of cathode sheet,
Anode pole piece 8 is successively oriented to the guiding of tension roll assembly 33 by the thickness measure of anode thickness measuring mechanism 31, anode tap and draws
Stream, anode lengths measuring mechanism 32 linear measure longimetry and butt up against volume needle 1, volume needle 1 to cathode sheet 7, anode pole piece 8 and isolation
Film 9 is wound, and the battery core after winding is through carrying out tab dislocation through tab dislocation testing agency 6 again after 5 precompressed of precompressed mechanism
Detection, can get the battery core of the adjustable tab dislocation of batch by the continuous operation of this system.
Wherein, the thickness measurements of cathode thickness measuring mechanism 21, the thickness measurements of anode thickness measuring mechanism 31, on
The tab dislocation testing agency 6 of one battery core obtains tab dislocation value can feed back to control system in real time, control system according to
Data obtain the pressure value applied by the mathematical logic operation of program and feed back to thickness adjusting mechanism 23, thickness adjusting mechanism
23 adjust ball-screw 2321 according to the instruction of control system in real time drives sliding support 2312 upwards along fixed bracket 2311
Sliding is adjusted by changing upper the distance between pressure roller 2313 and lower compression roller 2314 in upper pressure roller 2313 and lower compression roller 2314
Between cathode sheet 7 surface indentation, thus play the role of adjust cathode sheet 7.
It should be pointed out that the above specific embodiment is only illustrative of the invention and is not intended to limit the scope of the invention,
After having read the present invention, those skilled in the art each fall within power appended by the application to the modification of various equivalent forms of the invention
Benefit requires the range limited.
Claims (16)
1. the electric core winding system of adjustable tab dislocation, which is characterized in that including rolling up needle, cathode pole piece unwinding mechanism, anode
Pole piece unreeling structure, isolation film unreel structure, precompressed mechanism, tab dislocation testing agency and control system, the cathode sheet
Unreeling structure, the anode pole piece unreeling structure and the isolation film unreel structure and are electrically connected and butt up against with the control system
The volume needle, the precompressed mechanism is electrically connected control system and carries out precompressed to through battery core made of volume needle winding, described
Tab dislocation testing agency be electrically connected connected control system and to through the volume needle winding made of battery core carry out tab dislocation detection, institute
It states and is successively arranged cathode thickness measuring mechanism, cathode length measuring mechanism, hick regulating mechanism, institute in cathode pole piece unwinding mechanism
Anode pole piece unreeling structure is stated equipped with anode thickness measuring mechanism, the hick regulating mechanism is according to the finger of the control system
It enables and controls and certain pressure is applied to cathode sheet cathode sheet surface is made to generate impression to change the thickness of cathode sheet.
2. the electric core winding system of adjustable tab dislocation according to claim 1, which is characterized in that the cathode sheet
Unreeling structure has guiding tension roll assembly, and the guiding tension roll assembly, which is oriented to and drains the cathode sheet, is docked to the volume
Needle.
3. the electric core winding system of adjustable tab dislocation according to claim 2, which is characterized in that the cathode thickness
Measuring mechanism is pinch-roller type tenthousandth micrometer, and the cathode thickness measuring mechanism is set to the guiding tension roll assembly close to the cathode pole
The jockey pulley of the starting point of piece unreeling structure.
4. the electric core winding system of adjustable tab dislocation according to claim 2, which is characterized in that the cathode sheet
Unreeling structure also has buffering tension roll assembly, and the cathode sheet is buffered and is docked to the volume by the buffering tension roll assembly
Needle.
5. the electric core winding system of adjustable tab dislocation according to claim 4, which is characterized in that the guiding tension
The cathode length measuring mechanism is set between roller group and the buffering tension roll assembly, and the cathode length measuring mechanism is coding
Device, the encoder are installed in the buffering tension roll assembly close to the jockey pulley of the guiding tension roll assembly.
6. the electric core winding system of adjustable tab dislocation according to claim 4, which is characterized in that the thickness adjustment
Mechanism is between the buffering tension roll assembly and the volume needle.
7. the electric core winding system of adjustable tab dislocation according to claim 6, which is characterized in that the thickness adjustment
Mechanism has knurling mechanism, servo electric jar and pressure sensor, and the pressure sensor incudes the knurling mechanism to described
To the servo electric jar, the servo electric jar issues the pressure and feedback signal of cathode sheet according to the control system
The signal of instruction and pressure sensor feedback drives the knurling mechanism to apply certain pressure to the cathode sheet.
8. the electric core winding system of adjustable tab dislocation according to claim 7, which is characterized in that the knurling mechanism
Smooth rubber roller with salient point rubber roller and with salient point rubber roller cooperation, the pressure sensor incude the salient point rubber roller and institute
Smooth rubber roller is stated to the pressure and feedback signal of the cathode sheet to the servo electric jar, the servo electric jar drives institute
It states salient point rubber roller and controls the pressure applied to the cathode sheet to the movement of the smooth rubber roller.
9. the electric core winding system of adjustable tab dislocation according to claim 7, which is characterized in that the knurling mechanism
With the fixation bracket for being fixed on the servo electric jar and the sliding support being connect with the fixed bracket slide, the fixation
Upper pressure roller is fixed on bracket, the fixed lower compression roller with the upper pressure roller cooperation on the sliding support, the upper pressure roller is smooth
Rubber roller, the lower compression roller at least partially salient point rubber roller.
10. the electric core winding system of adjustable tab dislocation according to claim 9, which is characterized in that the fixed branch
Be provided with the first card slot, the upper pressure roller by upper pressure roller shaft be arranged in first card slot and can on the fixed bracket from
By rotating, the sliding support is equipped with the second card slot, and the lower compression roller is arranged in second card slot by pushing roll shaft and can
It is rotated freely on the sliding support.
11. the electric core winding system of adjustable tab dislocation according to claim 9, which is characterized in that the fixed branch
Frame is equipped with guide rail along the vertical direction, and the sliding support slides up and down along the guide rail and controls the salient point rubber roller and the light
Pressure of the sliding rubber roller to the cathode sheet.
12. the electric core winding system of adjustable tab dislocation according to claim 9, which is characterized in that the servo electricity
Dynamic cylinder has ball-screw and servo motor, and the ball-screw is connect with the sliding support, the servo motor with it is described
Fixed bracket is fixed.
13. the electric core winding method of adjustable tab dislocation, which is characterized in that include the following steps:
(1) cathode sheet exports
Cathode sheet is put into roll-to-roll needle, and thickness measure, length survey successively are carried out to the cathode sheet during unreeling
Amount, thickness are adjusted；
(2) anode pole piece exports
Anode pole piece is unreeled to the volume needle, and thickness measure is carried out to the anode pole piece during unreeling；
(3) isolation film exports
Isolation film is put into roll-to-roll needle；
(4) electric core winding
The cathode sheet, the anode pole piece and the isolation film after output is wound on the volume needle, it is described
Isolation film is isolated by the cathode sheet and the anode pole piece；
(5) tab dislocation detection
The battery core after winding is subjected to precompressed and detects tab misalignment to obtain tab magnitude of misalignment,
The thickness, which is adjusted to apply the cathode sheet certain pressure, makes cathode sheet surface generate impression to change yin
The thickness of pole pole piece.
14. the electric core winding method of adjustable tab dislocation according to claim 13, which is characterized in that the thickness tune
It is whole so that the cathode sheet surface is generated rough impression to change to apply certain pressure to the cathode sheet
State the thickness of cathode sheet.
15. the electric core winding method of adjustable tab dislocation according to claim 14, which is characterized in that pass through edge knurling machine
Structure to the cathode sheet surface apply pressure and generate rough impression, the knurling structure have salient point rubber roller and with
The smooth rubber roller of the salient point rubber roller cooperation.
16. the electric core winding method of adjustable tab dislocation according to claim 13, which is characterized in that described to apply one
Fixed pressure is obtained by importing the calculation formula of following formula,
P=α × [(Ln+1+βm-4a+4b-2πb)/2nπ-x-y-2z]
In formula: P- cathode sheet adjusts application pressure value when thickness, kgf；α-pressure adjustment factor；β-tab corrections to dislocation effect system
Number, 0 < β < 1；The previous cell polar ear magnitude of misalignment of m-；X, y, z-cathode sheet, anode pole piece, isolation film thickness, mm；
Ln+1Spacing of-the n-th tab to (n+1)th tab, mm；A- volumes of needle major semiaxis length, mm；B- volumes of needle semi-minor axis length, mm.
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| CN201811586253.6A CN109585902A (en) | 2018-12-24 | 2018-12-24 | The electric core winding system and method for adjustable tab dislocation |
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| CN201811586253.6A CN109585902A (en) | 2018-12-24 | 2018-12-24 | The electric core winding system and method for adjustable tab dislocation |
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| CN112310568A (en) * | 2019-09-24 | 2021-02-02 | 宁德时代新能源科技股份有限公司 | Tab dislocation adjusting method and device |
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| CN113594556A (en) * | 2021-07-27 | 2021-11-02 | 厦门海辰新能源科技有限公司 | Winding tab dislocation adjusting method and control system |
| CN113708010A (en) * | 2021-09-01 | 2021-11-26 | 东莞新能安科技有限公司 | Electrochemical device and electronic device |
| CN115911490A (en) * | 2021-09-23 | 2023-04-04 | 宁德时代新能源科技股份有限公司 | Method and device for processing electrode assembly |
| WO2023133809A1 (en) * | 2022-01-14 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Electrode sheet dislocation control method and apparatus, electrode sheet, battery cell, and battery |
| CN115020648B (en) * | 2022-04-21 | 2024-04-19 | 深圳吉阳智能科技有限公司 | Pole piece compounding device and pole piece compounding method |
| CN115020648A (en) * | 2022-04-21 | 2022-09-06 | 深圳吉阳智能科技有限公司 | Pole piece compounding device and pole piece compounding method |
| CN115498136A (en) * | 2022-10-24 | 2022-12-20 | 江苏正力新能电池技术有限公司 | Pole piece, preparation method of pole piece, battery cell and secondary battery |
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