CN106064389B - A kind of electrodes of lithium-ion batteries cutting method - Google Patents
A kind of electrodes of lithium-ion batteries cutting method Download PDFInfo
- Publication number
- CN106064389B CN106064389B CN201610566808.5A CN201610566808A CN106064389B CN 106064389 B CN106064389 B CN 106064389B CN 201610566808 A CN201610566808 A CN 201610566808A CN 106064389 B CN106064389 B CN 106064389B
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- CN
- China
- Prior art keywords
- pole piece
- width
- control range
- coordinate
- cut
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of electrodes of lithium-ion batteries cutting method, comprise the following steps：(1) length coordinate point is set along the edge of collector length direction；(2) width coordinate point is set along collector width, the distance between every group of width coordinate point is the width of pole piece；(3) collector for setting coordinate points is coated, dried, be compacted, test coated thickness, resistivity, the thermal conductivity for testing dot matrix record the length direction coordinate and width coordinate of measurement point respectively；(4) spreading area is multiplied by as uniformity control range using each pole coating thickness, if resistivity, the thermal conductivity of each test point meet the requirements in the control range, then the control range is pole piece trimming region, and control range is otherwise chosen again and is used as cropped area；(5) pole piece step cut will be rolled up greatly；(6) pole piece is cut according to the cropped area of determination；(7) lug is cut out on the pole piece cut.The cutting method that the present invention is provided, can cut and obtain the consistent pole piece of performance.
Description
Technical field
The present invention relates to technical field of lithium ion, more particularly to a kind of electrodes of lithium-ion batteries cutting method.
Background technology
The manufacturing process of electrodes of lithium-ion batteries is generally：Close slurry, coating, drying, roll-in, cut.Closing slurry process will be each
Slurry is made in kind of material solubilizer dispersed with stirring, and slurry is coated uniformly on collector by painting process, baking operation be then by
The solvent in slurry is dried after collector coating sizing-agent, roll-in is to be compacted pole piece, pole piece sanction will be rolled up greatly according to design by cutting
It is cut into the shapes and sizes of needs.
Prior art follow-up pole piece cutting and tab welding for convenience, in painting process using segmentation coating, i.e.,
One section of coating, one section of blank.During cutting, the equal method of space length is added to carry out step cut according to cloth length is applied.
Then will be segmented cut wide pole piece by design pole piece width equal in width cutting obtain pole piece.Due to the limitation of coating technique, pole
The painting cloth length of active slurry can not control completely the same on piece, typically there is positive and negative 2 millimeters of an error, and width is not yet
It can be coated with completely the same.Therefore the pole piece uniformity that existing pole piece cutting method is cut out is poor.
The content of the invention
It is an object of the present invention to provide a kind of electrodes of lithium-ion batteries cutting method, it, which can cut, obtains the consistent pole of performance
Piece.
Based on above mentioned problem, the technical scheme that the present invention is provided is：
A kind of electrodes of lithium-ion batteries cutting method, comprises the following steps：
(1) length coordinate point is set along the edge of collector length direction；
(2) width coordinate point is set along collector width, the distance between every group of width coordinate point is the width of pole piece；
(3) collector for setting coordinate points is coated, dried, be compacted, test coated thickness, the electricity for testing dot matrix
Resistance rate, thermal conductivity, record the length direction coordinate and width coordinate of measurement point respectively；
(4) spreading area is multiplied by as uniformity control range using each pole coating thickness, if each in the control range
Resistivity, the thermal conductivity of test point meet the requirements, then the control range is pole piece trimming region, and control range is otherwise chosen again
It is used as pole piece trimming region；
(5) pole piece step cut will be rolled up greatly；
(6) cropped area determined according to step (4) cuts pole piece；
(7) lug is cut out on the pole piece that step (6) is cut, if active material coating layer, scavenging capacity on lug
Material coating layer makes lug area keep metallic state.
Compared with prior art, it is an advantage of the invention that：
Using technical scheme, it can cut and obtain the consistent pole piece of performance, improve the quality of battery.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, being used required in being described below to embodiment
Accompanying drawing be briefly described, drawings in the following description are only some embodiments of the present invention, for the common skill in this area
For art personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is to set the signal of length coordinate point on a current collector in a kind of electrodes of lithium-ion batteries cutting method of the invention
Figure；
Fig. 2 is to set the schematic diagram of width coordinate point on a current collector in the embodiment of the present invention；
Fig. 3 is the schematic diagram of true ground cropped area in the embodiment of the present invention；
Wherein：
A, length coordinate point；
B, width coordinate point；
C, pole piece trimming region.
Embodiment
Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are to be used to illustrate
The present invention and be not limited to limit the scope of the present invention.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, unreceipted implementation condition is usually the condition in normal experiment.
A kind of electrodes of lithium-ion batteries cutting method, comprises the following steps：
(1) length coordinate point A is set along the edge of collector length direction, as shown in Figure 1；
(2) width coordinate point B is set along collector width, as shown in Fig. 2 the distance between every group of width coordinate point B
For the width of pole piece；
(3) collector for setting coordinate points is coated, dried, be compacted, test coated thickness, the electricity for testing dot matrix
Resistance rate, thermal conductivity, record the length direction coordinate and width coordinate of measurement point respectively；
(4) spreading area is multiplied by as uniformity control range using each pole coating thickness, if each in the control range
Resistivity, the thermal conductivity of test point meet the requirements, then the control range is pole piece trimming region C, as shown in figure 3, otherwise again
Choose control range and be used as pole piece trimming region；
(5) pole piece step cut will be rolled up greatly；
(6) cropped area determined according to step (4) cuts pole piece；
(7) lug is cut out on the pole piece that step (6) is cut, if active material coating layer, scavenging capacity on lug
Material coating layer makes lug area keep metallic state.
The foregoing examples are merely illustrative of the technical concept and features of the invention, its object is to allow the person skilled in the art to be
Present disclosure can be understood and implemented according to this, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
Equivalent transformation or modification that refreshing essence is done, should all be included within the scope of the present invention.
Claims (1)
1. a kind of electrodes of lithium-ion batteries cutting method, it is characterised in that comprise the following steps：
(1) length coordinate point is set along the edge of collector length direction；
(2) width coordinate point is set along collector width, the distance between every group of width coordinate point is the width of pole piece；
(3) collector for setting coordinate points is coated, dried, be compacted, test coated thickness, the resistance for testing dot matrix
Rate, thermal conductivity, record the length direction coordinate and width coordinate of measurement point respectively；
(4) spreading area is multiplied by as uniformity control range using each pole coating thickness, if each being tested in the control range
Resistivity, the thermal conductivity of point meet the requirements, then the control range is pole piece trimming region, and control range conduct is otherwise chosen again
Pole piece trimming region；
(5) pole piece step cut will be rolled up greatly；
(6) cropped area determined according to step (4) cuts pole piece；
(7) lug is cut out on the pole piece that step (6) is cut, if active material coating layer, scavenging capacity material on lug
Coating layer makes lug area keep metallic state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566808.5A CN106064389B (en) | 2016-07-19 | 2016-07-19 | A kind of electrodes of lithium-ion batteries cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566808.5A CN106064389B (en) | 2016-07-19 | 2016-07-19 | A kind of electrodes of lithium-ion batteries cutting method |
Publications (2)
| Publication Number | Publication Date |
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| CN106064389A CN106064389A (en) | 2016-11-02 |
| CN106064389B true CN106064389B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610566808.5A Active CN106064389B (en) | 2016-07-19 | 2016-07-19 | A kind of electrodes of lithium-ion batteries cutting method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878983A (en) * | 2018-06-22 | 2018-11-23 | 中航锂电（江苏）有限公司 | A kind of online identification method of thickness abnormity pole piece and its device |
| CN109142115A (en) * | 2018-09-12 | 2019-01-04 | 天津市捷威动力工业有限公司 | A kind of aluminum oxide coating layer New Hardness Testing Device and detection method |
| CN110108239B (en) * | 2019-05-21 | 2021-04-02 | 东莞维科电池有限公司 | Pole piece quality information acquisition method, system and equipment |
| CN112985496A (en) * | 2021-02-05 | 2021-06-18 | 惠州亿纬锂能股份有限公司 | Consistency evaluation method of battery pole piece |
| CN114905337B (en) * | 2022-04-29 | 2023-08-22 | 广东利元亨智能装备股份有限公司 | Pole piece cutting control method, device, controller and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004152716A (en) * | 2002-11-01 | 2004-05-27 | Shin Kobe Electric Mach Co Ltd | Inspection method of electrode |
| CN101320798A (en) * | 2008-06-23 | 2008-12-10 | 湖南神舟科技股份有限公司 | Square alkaline power accumulator negative plate and its serialization production method |
| CN101320797A (en) * | 2008-06-24 | 2008-12-10 | 高新峰 | Production method and production equipment for slurry dragging polar plate of lead-acid accumulator |
| CN101442114A (en) * | 2007-11-20 | 2009-05-27 | 比亚迪股份有限公司 | Preparation method for lithium ion battery pole piece |
| CN103311575A (en) * | 2013-06-18 | 2013-09-18 | 东莞市比比克电子科技有限公司 | Square lithium-ion battery cell and production process thereof |
-
2016
- 2016-07-19 CN CN201610566808.5A patent/CN106064389B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004152716A (en) * | 2002-11-01 | 2004-05-27 | Shin Kobe Electric Mach Co Ltd | Inspection method of electrode |
| CN101442114A (en) * | 2007-11-20 | 2009-05-27 | 比亚迪股份有限公司 | Preparation method for lithium ion battery pole piece |
| CN101320798A (en) * | 2008-06-23 | 2008-12-10 | 湖南神舟科技股份有限公司 | Square alkaline power accumulator negative plate and its serialization production method |
| CN101320797A (en) * | 2008-06-24 | 2008-12-10 | 高新峰 | Production method and production equipment for slurry dragging polar plate of lead-acid accumulator |
| CN103311575A (en) * | 2013-06-18 | 2013-09-18 | 东莞市比比克电子科技有限公司 | Square lithium-ion battery cell and production process thereof |
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| CN106064389A (en) | 2016-11-02 |
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