CN104167553A - Square winding type battery pole piece and manufacturing technology thereof - Google Patents
Square winding type battery pole piece and manufacturing technology thereof Download PDFInfo
- Publication number
- CN104167553A CN104167553A CN201410276451.8A CN201410276451A CN104167553A CN 104167553 A CN104167553 A CN 104167553A CN 201410276451 A CN201410276451 A CN 201410276451A CN 104167553 A CN104167553 A CN 104167553A
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- China
- Prior art keywords
- white
- negative
- stays
- lug
- coating
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Classifications
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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
- 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
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
Abstract
The invention belongs to the technical field of battery structures, and discloses a square winding type battery pole piece. One edges of positive and negative current collectors are provided with convex electrode lugs; the roots of the convex electrode lugs are provided with insulation rubber coatings; two side edges of the positive current collector are provided with positive electrode small white spaces; two side edges of the negative current collectors are provided with negative electrode small white spaces; the positive electrode small white spaces and the negative electrode small white spaces are oppositely adhered with insulation tapes; a big white space is arranged between a positive electrode coating region and the positive electrode small white space at one side edge; the big white space provides larger coating amount of positive active substances, increases capacity of the battery, and reduces cost of the battery. The insulation rubber coatings are tightly combined with the coating material on the convex electrode lugs, thereby increasing the strength of the electrode lugs and playing a role of preventing shore-circuit situation during a pole-lug folding process. By cutting in the position where the insulation tapes are oppositely adhered during a winding process, powder off caused by cutting the material and burr short circuit caused by a cutter can be prevented effectively.
Description
Technical field
The invention belongs to battery structure technical field, relate to a kind of square coiled battery pole piece and manufacture craft thereof.
Background technology
Fossil energy shortage, environmental pollution, climate warming have become the problem of whole mankind's facing.The oil of China 70% is for automobile, and urban air pollution thing 50% is from automobile, and the external interdependency of crude oil has exceeded 50%.And development new-energy automobile is the strategic demand of breaking away from dependence to fossil energies such as oil, preserve the ecological environment and ensure national energy security.
Electric automobile is the emphasis of new-energy automobile development, and electrokinetic cell is again the core component of electric automobile.More wide space has been opened up in China's electrokinetic cell industry development that develops into of new-energy automobile, and lithium ion battery is again the most potential electric automobile vehicle mounted electric source.And as the power source of the clean traffic instruments such as electric automobile, lithium ion battery is faced with the challenge of the aspects such as high volumetric specific energy, high-quality specific energy, high rate capability and high useful life.For tackling these demands, lithium-ion-power cell industry has been carried out a series of development and improvement around battery performance, comprising aspects such as material, technique, structures.
Around structure aspects, square lithium ion battery has a variety of structural designs, wherein mainly comprises stacked and takeup type.Laminated battery plate is because of the design of its lug, on each lamination, there is lug to draw and there is powerful performance, but the imperfect manufacture such as the quality aspect controls such as laminated battery plate processing technology complexity, operation are comparatively loaded down with trivial details, process burr are comparatively strict and limitation to some extent.Coiled battery preparation technology is simple by contrast, can carry out full-automatic large-scale production, therefore development is comparatively rapid, around the poor shortcoming of its high rate performance, a lot of emerging designs aspect battery structure, are also there are, such as the structural design of monopole ear multi-winding-core can improve the high rate performance of battery, but this structure is because being required to be lug and first volume stays blank afflux structure headspace such as white grade to reduce the volumetric properties of battery.Adopt in addition the form of positive/negative plate multi pole ears structure barrier film outsourcing, the battery of this structure has higher multiplying power and volumetric properties, but battery core generally cuts dressing position in winding process causes a large amount of dust and the unshielded folding process of anode ear all to cause in battery core short circuit and lug manufacturing process than the shortcoming that is easier to lose than being easier to, need to carry out certain safeguard procedures, on this, derive negative pole laser and cut the form of the anodal spot welding of lug rubberizing, solve to a great extent the short circuit problem of battery core, but having occupied certain dressing position, the lug position of spot welding reduces to a certain extent the capacity of battery.
Summary of the invention
The present invention is mainly for the defect of multi pole ears battery core in winding process in prior art, provide a kind of more rationally, and can improve square coiled battery pole piece and the manufacture craft thereof of multi pole ears battery capacity.
Object of the present invention can be achieved through the following technical solutions:
A kind of square coiled battery pole piece, formed with the deposited district of positive and negative electrode being coated on positive and negative collector by positive and negative collector, described positive and negative collector one edge is provided with evagination lug, the root of described evagination lug is provided with insulation compound coating, described positive collector both sides of the edge be provided with just minimum stay white, negative collector both sides of the edge be provided with negative pole little stay white, described just minimum stay white and negative pole little stay white upper to posting insulating tape, described positive pole applies district and a lateral edges just minimum stay be provided with between white stay greatly white.
Describedly just minimumly stay white width to be greater than that negative pole is little stays white width.
Describedly roll up the length that core outermost one encloses after staying greatly white length to equal to reel.
When applying district's coiling, realizes described positive and negative electrode negative pole dressing district Fu Bao anode dressing district.
A kind of manufacture craft of square coiled battery pole piece, comprise and close slurry, coating, roll-in, trimming, coiling operation, in coating process, Liu Bai both sides, anodal edge are little stay white, stay white gap Liu Baishi coating greatly, stay the acupuncture treatment alignment of white one side, it is white that negative pole adopts edge to stay, and equity is little stays white gap to be coated with; After completing, coating applies the closely sealed spot printing insulation compound coating of area edge at positive and negative electrode; When trimming, laser adopts responds to the mode of staying the white rear cycle to cut lug, cuts lug to reel into the dimensional directions of sheet, and the long error of painting during by coating characterizes the afterbody of pole piece in the time reeling, and can effectively prevent the location bias of lug when lug is reeled.
Beneficial effect of the present invention: in the present invention, positive plate stays greatly white design that the dressing amount of larger positive active material is provided, improve the capacity of battery, in increasing capacity, there is no the increase of barrier film and negative material, reduce to a certain extent the cost of battery; On insulation compound coating and evagination lug, dressing is combined closely, and has improved the intensity of lug, and plays the effect that insulation prevents that short-circuit state from occurring in folding lug process; To pasting insulating tape, when coiling, cut in this position and can effectively avoid being cut to the dry linting of material and the burr short-circuit state that cutting knife causes.
Brief description of the drawings
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the anodal bilateral structure of the present invention.
Fig. 2 is negative pole bilateral structure of the present invention.
Embodiment
As depicted in figs. 1 and 2, a kind of square coiled battery pole piece, by positive collector 7, bear collector 8 and be coated on positive collector 7, positive pole on negative collector 8 applies district 2, negative pole applies district 6 and forms, described positive collector 7, negative collector 8 one edges are provided with evagination lug 4, the root of described evagination lug 4 is provided with insulation compound coating 5, described positive collector 7 both sides of the edge are provided with just minimumly stays white 7.1, negative collector 8 both sides of the edge are provided with that negative pole is little stays white 8.1, describedly just minimumly stay white 7.1 with negative pole is little stays on white 8.1 posting insulating tape 3, described positive pole applies district 2 and a lateral edges, and just minimum being provided with between staying white 7.1 stays greatly white 1.Describedly just minimumly stay white 7.1 width to be greater than that negative pole is little stays white 8.1 width.Describedly roll up the length that core outermost one encloses after staying greatly white 1 length to equal to reel.Described positive and negative electrode applies negative pole dressing edge after coiling, district 2,6 and is greater than anode dressing edge 1-2mm.
Manufacture craft of the present invention, comprises and closes slurry, coating, roll-in, trimming, coiling operation, in coating process, just minimumly stays white 7.1 gap Liu Baishi coatings, stays the acupuncture treatment alignment of white one side, and negative pole is little to be stayed white 8.1 to adopt edges to stay white, reciprocity little gap coating; After completing, coating applies district 2, negative pole deposited district 6 marginal fit spot printing insulation compounds coatings 5 at positive pole; When trimming, the mode of staying the white rear cycle to cut lug is responded in laser employing, cuts lug to reel into the dimensional directions of sheet, and the long error of painting during by coating characterizes the afterbody of pole piece in the time reeling, lug location bias can effectively prevent lug coiling time.
As shown in Figure 1, 2, this pole piece structure with four evagination lugs 4 contains dressing district, gap stays white area, glue application region, edge and edge to stay white area, therefore in coating process, carry out the reserved of Liu Bai and gap, carry out a positive anti-same form coating, and hopper width is biplate dressing width, in the middle of collector, be coated with, it is wide that collector width is greater than material, and both sides are left laser and cut the width of the lug length of lug.In coating, set up spot gluing equipment, at the continuous edge spot printing insulation paste of material, so far coating process completes.
Evagination lug 4 shown in Fig. 1,2, its course of processing is: the pole piece that coating is completed is cut the pole piece obtaining without lug in the middle of dressing after baking roll-in, this pole piece is processed with laser edge cutting machine, the programming that laser trimming adopts induction to stay white rear cycle change spacing to cut cuts out evagination lug 4, and spacing technique wherein etc. are according to the lug alignment design of reeling.Insulating tape 3, its course of processing is: the pole piece after laser trimming is stayed after white the equipment of rubberizing is carried out to rubberizing processing through induction, also reach simultaneously to positive sequence cut the pole piece object of rewinding.So far the pole piece of this multi pole ears completes, and follow-up winding process is comparatively similar with the monopole ear coiling technology of present stage maturation, only needs after induction lug, to judge that changing induction into stays white rear judgement.
In anodal coating process, have and stay greatly white 1 gap applying structure, this form of staying white region to become positive pole and stay ultrawhite bag in the battery core of reeling, this structure is with respect to the barrier film externally-packed structure of conventional multi pole ears volume core, many anodal one side dressing of a circle in the situation that negative pole barrier film consumption is constant, and only can increase the one side thickness of positive plate, so the dressing amount of larger positive active material can be provided under certain space, improve the capacity of battery, the capacity simultaneously increasing does not have the increase of barrier film and negative material yet, so also reduced to a certain extent the cost of battery.It is to consider curling to non-material area can occur in the time that negative pole inner ring adopts the coating of one side in the time that coiling cuts that negative pole is different from anodal coating method, and cause cannot normally entering sheet in winding process, positive plate ending stays white design without this impact.
Adopt the insulation compound coating 5 of existing edge dispensing technology at lug position spot printing width and thickness, this peak width design basis is for having insulation dressing to exist on crooked position in folding lug process, generally be designed to anodal 10mm, negative pole 8mm, this layer of insulation compound and dressing are combined closely, improve to a certain extent the intensity of lug, and played the effect that insulation prevents that short-circuit state from occurring in folding lug process; Positive and negative minimum stay white position to paste insulating tape 3, when coiling, cut in this position and can effectively avoid being cut to the dry linting of material and the burr short-circuit state that cutting knife causes, and this induction stay form that white rear coiling cuts can greatly simplify existing induction pole ear space after coding calculate the wraparound program and the equipment that cut position.
Claims (5)
1. a square coiled battery pole piece, by just, negative collector (7, 8) and be just coated on, negative collector (7, 8) on just, negative pole applies district (2, 6) form, it is characterized in that, just described, negative collector (7, 8) edge is provided with evagination lug (4), the root of described evagination lug (4) is provided with insulation compound coating (5), described positive collector (7) both sides of the edge are provided with just minimum stay white (7.1), negative collector (8) both sides of the edge are provided with that negative pole is little stays white (8.1), describedly just minimumly stay that white (7.1) and negative pole are little stays white (8.1) upper to posting insulating tape (3), just minimum the staying between white (7.1) that described positive pole applies district (2) and a lateral edges is provided with and stays greatly white (1).
2. a kind of square coiled battery pole piece according to claim 1, is characterized in that, described just minimum white (7.1) width that stays is greater than little white (8.1) width that stays of negative pole.
3. a kind of square coiled battery pole piece according to claim 1, is characterized in that, describedly rolls up the length that core outermost one encloses after staying greatly white (1) length to equal to reel.
4. a kind of square coiled battery pole piece according to claim 1, is characterized in that, described positive and negative electrode applies negative pole dressing edge after coiling, district (2,6) and is greater than anode dressing edge 1-2mm.
5. the manufacture craft of square coiled battery pole piece as claimed in claim 1, comprise and close slurry, coating, roll-in, trimming, coiling operation, it is characterized in that, in coating process, anodal employing edge stays white, and both sides adopt respectively stays greatly white (1), little white (7.1) the gap Liu Baishi that stays to be coated with, and stays the acupuncture treatment alignment of white one side, negative pole is little, and to stay white (8.1) to adopt edge to stay white, reciprocity little gap coating; After completing, coating applies district (2,6) marginal fit spot printing insulation compound coating (5) at positive and negative electrode; When trimming, laser adopts responds to the mode of staying the white rear cycle to cut lug, cut lug to reel into the size interval direction of sheet, through insulating tape (3), lug after pasting operation is fallen to continue and be convenient to direct winfing, the long error of painting during by coating characterizes the afterbody of pole piece in the time reeling, and can effectively prevent the location bias of lug after reeling.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276451.8A CN104167553B (en) | 2014-06-19 | 2014-06-19 | A kind of square coiled battery pole piece and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276451.8A CN104167553B (en) | 2014-06-19 | 2014-06-19 | A kind of square coiled battery pole piece and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN104167553A true CN104167553A (en) | 2014-11-26 |
| CN104167553B CN104167553B (en) | 2016-08-17 |
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| CN201410276451.8A Active CN104167553B (en) | 2014-06-19 | 2014-06-19 | A kind of square coiled battery pole piece and processing technology thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514480A (en) * | 2016-02-01 | 2016-04-20 | 陈佩 | Cylindrical lithium ion battery and method for packaging negative terminal |
| CN105855325A (en) * | 2016-04-13 | 2016-08-17 | 合肥国轩高科动力能源有限公司 | Lithium ion battery tab bending correction device |
| CN106169618A (en) * | 2016-09-29 | 2016-11-30 | 东莞市振华新能源科技有限公司 | A kind of positive/negative plate promoting electrokinetic cell safety and winding clad structure thereof |
| CN106410104A (en) * | 2016-08-25 | 2017-02-15 | 合肥国轩高科动力能源有限公司 | Cylindrical battery with multiple polar lugs and manufacturing method thereof |
| CN106848325A (en) * | 2017-02-15 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Secondary battery pole piece, preparation method thereof and winding type battery cell |
| CN109686912A (en) * | 2018-12-26 | 2019-04-26 | 蜂巢能源科技有限公司 | Battery pole piece and preparation method thereof, lithium ion battery |
| CN111477833A (en) * | 2020-04-10 | 2020-07-31 | 孚能科技(赣州)股份有限公司 | Lithium ion battery pole piece and laser cutting and manufacturing method thereof |
| WO2020192651A1 (en) * | 2019-03-26 | 2020-10-01 | 宁德新能源科技有限公司 | Pole piece, battery cell and battery |
| CN112103474A (en) * | 2020-09-15 | 2020-12-18 | 横店集团东磁股份有限公司 | Processing method of winding type lithium battery positive plate and winding type lithium battery positive plate |
| CN112599725A (en) * | 2020-12-23 | 2021-04-02 | 深圳赛骄阳能源科技股份有限公司 | Method for improving rolling efficiency of lithium ion battery pole piece |
| CN113036315A (en) * | 2019-12-25 | 2021-06-25 | 华为技术有限公司 | Battery and terminal equipment |
| CN114204036A (en) * | 2021-11-17 | 2022-03-18 | 合肥国轩高科动力能源有限公司 | Preparation method of composite current collector |
| CN114447282A (en) * | 2020-10-30 | 2022-05-06 | 北京小米移动软件有限公司 | Pole piece, processing method thereof and lithium battery |
| CN115084429A (en) * | 2022-07-08 | 2022-09-20 | 珠海冠宇电池股份有限公司 | Positive plate and lithium ion battery |
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| CN109473729B (en) | 2018-11-05 | 2020-11-13 | 宁德新能源科技有限公司 | Electrochemical device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021453A (en) * | 1998-07-02 | 2000-01-21 | Nikkiso Co Ltd | Nonaqueous electrolyte secondary battery |
| CN101212039B (en) * | 2006-12-27 | 2010-08-25 | 比亚迪股份有限公司 | Battery pole plate, method for producing the battery pole plate, and pole plate core and secondary battery |
| CN101950816A (en) * | 2010-09-21 | 2011-01-19 | 奇瑞汽车股份有限公司 | Square power lithium ion battery cell and manufacturing method thereof |
| CN202363549U (en) * | 2011-12-15 | 2012-08-01 | 协鑫动力新材料（盐城）有限公司 | Winding-type lithium ion battery structure |
| CN102683751A (en) * | 2012-05-25 | 2012-09-19 | 浙江振龙电源股份有限公司 | High-capacity high-magnification square lithium ion power battery and manufacturing method thereof |
| CN102800842A (en) * | 2012-08-29 | 2012-11-28 | 因迪能源（苏州）有限公司 | Novel lithium-ion battery |
-
2014
- 2014-06-19 CN CN201410276451.8A patent/CN104167553B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021453A (en) * | 1998-07-02 | 2000-01-21 | Nikkiso Co Ltd | Nonaqueous electrolyte secondary battery |
| CN101212039B (en) * | 2006-12-27 | 2010-08-25 | 比亚迪股份有限公司 | Battery pole plate, method for producing the battery pole plate, and pole plate core and secondary battery |
| CN101950816A (en) * | 2010-09-21 | 2011-01-19 | 奇瑞汽车股份有限公司 | Square power lithium ion battery cell and manufacturing method thereof |
| CN202363549U (en) * | 2011-12-15 | 2012-08-01 | 协鑫动力新材料（盐城）有限公司 | Winding-type lithium ion battery structure |
| CN102683751A (en) * | 2012-05-25 | 2012-09-19 | 浙江振龙电源股份有限公司 | High-capacity high-magnification square lithium ion power battery and manufacturing method thereof |
| CN102800842A (en) * | 2012-08-29 | 2012-11-28 | 因迪能源（苏州）有限公司 | Novel lithium-ion battery |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514480A (en) * | 2016-02-01 | 2016-04-20 | 陈佩 | Cylindrical lithium ion battery and method for packaging negative terminal |
| CN105855325A (en) * | 2016-04-13 | 2016-08-17 | 合肥国轩高科动力能源有限公司 | Lithium ion battery tab bending correction device |
| CN106410104A (en) * | 2016-08-25 | 2017-02-15 | 合肥国轩高科动力能源有限公司 | Cylindrical battery with multiple polar lugs and manufacturing method thereof |
| CN106169618A (en) * | 2016-09-29 | 2016-11-30 | 东莞市振华新能源科技有限公司 | A kind of positive/negative plate promoting electrokinetic cell safety and winding clad structure thereof |
| CN106848325A (en) * | 2017-02-15 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Secondary battery pole piece, preparation method thereof and winding type battery cell |
| CN109686912A (en) * | 2018-12-26 | 2019-04-26 | 蜂巢能源科技有限公司 | Battery pole piece and preparation method thereof, lithium ion battery |
| WO2020192651A1 (en) * | 2019-03-26 | 2020-10-01 | 宁德新能源科技有限公司 | Pole piece, battery cell and battery |
| US11888123B2 (en) | 2019-03-26 | 2024-01-30 | Ningde Amperex Technology Ltd. | Electrode plate, battery cell, and battery |
| CN113036315A (en) * | 2019-12-25 | 2021-06-25 | 华为技术有限公司 | Battery and terminal equipment |
| CN111477833A (en) * | 2020-04-10 | 2020-07-31 | 孚能科技(赣州)股份有限公司 | Lithium ion battery pole piece and laser cutting and manufacturing method thereof |
| CN112103474A (en) * | 2020-09-15 | 2020-12-18 | 横店集团东磁股份有限公司 | Processing method of winding type lithium battery positive plate and winding type lithium battery positive plate |
| CN114447282A (en) * | 2020-10-30 | 2022-05-06 | 北京小米移动软件有限公司 | Pole piece, processing method thereof and lithium battery |
| CN112599725A (en) * | 2020-12-23 | 2021-04-02 | 深圳赛骄阳能源科技股份有限公司 | Method for improving rolling efficiency of lithium ion battery pole piece |
| CN114204036A (en) * | 2021-11-17 | 2022-03-18 | 合肥国轩高科动力能源有限公司 | Preparation method of composite current collector |
| CN115084429A (en) * | 2022-07-08 | 2022-09-20 | 珠海冠宇电池股份有限公司 | Positive plate and lithium ion battery |
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Address after: 230000 Yaohai Industrial Zone, Hefei New District, Anhui, No. D weft Road, No. 7 Applicant after: Hefei Guoxuan High-Tech Power Energy Co., Ltd. Address before: 230000 Yaohai Industrial Zone, Hefei New District, Anhui, No. D weft Road, No. 7 Applicant before: Hefei Guoxuan High-Tech Power Energy Co., Ltd. |
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