CN104253286A - Manufacturing method of high-energy-density button lithium ion battery - Google Patents
Manufacturing method of high-energy-density button lithium ion battery Download PDFInfo
- Publication number
- CN104253286A CN104253286A CN201310258503.4A CN201310258503A CN104253286A CN 104253286 A CN104253286 A CN 104253286A CN 201310258503 A CN201310258503 A CN 201310258503A CN 104253286 A CN104253286 A CN 104253286A
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- Prior art keywords
- positive
- barrier film
- negative
- pole
- lug
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
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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
- 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
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a manufacturing method of a high-energy-density button lithium ion battery. The method comprises the following steps: stamping: stamping a positive electrode and a negative electrode into small pieces by using cutting dies; hot melting: making positive pieces and membranes into a positive piece-membrane complex; laminating: alternatively laminating the positive piece-membrane complex and negative pieces into a polar group, and rubberizing the polar group; welding: laminating an aluminum foil of the same shape as the positive pieces on one side of the polar group which is in contact with a positive cover, welding the lug of the aluminum foil and the lugs of the positive pieces together, welding the lugs of the negative pieces and a nickel belt together, putting the materials into a shell, and welding the nickel belt and a negative shell together; and performing baking, liquid injection, sealing, ageing and pre-charging to make a complete button lithium ion battery. Compared with an existing process, the method has the advantages that the space of the shell can be fully utilized, and the energy density is high; and through adoption of the positive piece-membrane complex made by hot melting, short circuit caused by contact of the positive and negative pieces is prevented, and the safety is high.
Description
Technical field
The present invention relates to a kind of button lithium ion battery manufacture method.
Background technology
Present button lithium ion battery adopts winding method that pole piece and barrier film are done poling group, and because winding core is out square, and button shell is circular, so just can not make full use of the space of button shell, and thus energy density is not high.
Summary of the invention
The object of this invention is to provide the button lithium ion battery of high-energy-density, can the deficiencies in the prior art be overcome.
The present invention is realized by special punching, hot melt, lamination and welding manner, sees following technical scheme:
Punching.With the positive pole cutting die designed, negative pole cutting die, the positive pole after roll-in, negative pole are washed into small pieces, small pieces are divided into dressing and lug two parts, dressing part is cut away on the basis of circle one section (in D font), then draws lug (empty paper tinsel is as lug) here.(below by the small pieces gone out respectively referred to as positive plate, negative plate)
Hot melt.Be placed on by positive plate in the middle of two-layer barrier film, dressing part is covered by barrier film completely, and lug only part (part near dressing) is covered by barrier film, and major part is outside barrier film.Then anode ear position identical, corresponding with a positive plate dressing partial shape hot melt cutter jaggy (hot melt knife-edge edge will exceed positive plate dressing edge 0 ~ 2mm) is used to be pressed on barrier film, the position of hot melt cutter will ensure that hot melt cutter can not be pressed onto dressing part, but is pressed on the barrier film of dressing edge.Under certain temperature and pressure, the upper and lower two-layer barrier film at edge, by hot melt, is cut off simultaneously, and the dressing part of such positive plate has just been encased by barrier film completely.What obtain thus wraps in positive plate in barrier film and barrier film, is referred to as positive plate-barrier film complex.
Possibility replaces positive plate above with negative plate, with the hot melt cutter matched with described negative plate, just negative plate can be wrapped in barrier film completely, make negative plate-barrier film complex.
Lamination.Negative plate, positive plate-barrier film complex are stacked alternately together one by one, do poling group (will guarantee during lamination that negative pole encases positive pole), the outermost of pole group, one side is negative pole (contacting with negative electrode casing), and another side is positive plate-barrier film complex (contacting with positive cover).Then rubberizing fixed pole group, prevents negative plate or positive pole-barrier film complex from moving.
Corresponding with the possibility of hot melt, possibility is that negative plate-barrier film complex is stacked alternately, then rubberizing.
Welding.The side contacted with positive cover in pole group is superimposed with a slice aluminium foil identical with positive plate shape, then by the lug of aluminium foil together with the tab welding of positive plate in the group of described pole, cut off unwanted lug part, and rubberizing.The lug of negative plate and nickel strap are welded together, cut off unwanted lug part, and rubberizing, then enter shell, nickel strap and negative electrode casing spot-welded together.
Corresponding with the possibility of lamination, possibility is that the side contacted with negative electrode casing in pole group is superimposed with a slice Copper Foil identical with negative plate shape, then by the lug of Copper Foil together with the tab welding of negative plate in the group of described pole.The lug of positive plate and aluminium nickel composite tape are connected together, enter after shell aluminium nickel composite band and positive cover spot-welded together.
Then through overbaking, fluid injection, sealing, ageing, preliminary filling, aluminium foil and positive cover can keep good always and contact (being that Copper Foil and negative electrode casing keep good contact in possibility), thus form complete button lithium ion battery.
The dressing partial design of pole piece, compared with current technology, is become D font by the present invention, then draw foil as lug, it is fine that dressing part overlaps with button shell, and can make full use of the space of shell, energy density is high; Positive plate-barrier film complex (being negative plate-barrier film complex in possibility) that hot melt is made, positive plate (being negative plate in possibility) is enclosed in two-layer barrier film completely, positive plate is prevented to contact with negative plate and the short circuit caused, thus safer; Aluminium foil is relied on to be connected with positive cover by positive plate (being that Copper Foil is connected with negative electrode casing in possibility), only need the tab welding of the lug of positive plate and aluminium foil just can realize the conducting (being the lug of negative plate and the tab welding of Copper Foil in possibility) of positive pole, thus fairly simple.
Accompanying drawing explanation
Fig. 1 is the negative plate schematic diagram that the punching step described in the embodiment of the present invention 1 is gone out, and 11 is negative electrode lugs, and 12 is dressing parts.
Fig. 2 is the positive plate schematic diagram that the punching step described in the embodiment of the present invention 1 is gone out, and 21 is anode ears, and 22 is dressing parts.
Fig. 3 is the hot melt cutter schematic diagram used of the heat fusion step described in the embodiment of the present invention 1.
Fig. 4 is positive plate-barrier film complex schematic diagram that the heat fusion step described in the embodiment of the present invention 1 is made, and 41 is barrier films, and 42 is positive plates.
Fig. 5 is the pole group schematic diagram that the lamination step described in the embodiment of the present invention 1 is made, and 51 is positive plate-barrier film complexs, and 52 is negative plates.
Fig. 6 is the result schematic diagram entering welding step before shell described in the embodiment of the present invention 1, and 61 is weld and the anode ear pruned, and 62 is weld and the negative electrode lug pruned, and 63 is nickel straps.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in more detail.
Execution mode 1
Step 1: punching.With cutting die, positive and negative electrode is washed into small pieces, as shown in Figure 1, described negative plate is made up of two parts the negative plate rushed out: dressing part 12, lug part 11; As shown in Figure 2, described positive plate is made up of two parts the positive plate rushed out: dressing part 22, lug part 21.
Step 2: hot melt.Be placed on by positive plate 42 in the middle of two-layer barrier film 41, the dressing part of described positive plate 42 is covered by barrier film 41 completely, and a lug part (part near dressing) of described positive plate 42 is covered by barrier film 41, and major part is outside barrier film 41.Then positive plate dressing edge 0 ~ 2mm to be exceeded with anode ear position identical, corresponding with a positive plate dressing partial shape hot melt cutter jaggy 31(hot melt knife-edge edge) be pressed on barrier film 41, the position of hot melt cutter will ensure that hot melt cutter can not be pressed onto dressing part, but is pressed on the barrier film 41 of dressing edge.Under certain temperature and pressure, barrier film 41, by hot melt, is cut off simultaneously, and the dressing part of such positive plate 42 has just been encased by barrier film 41 completely.As shown in Figure 3, the positive plate of working it out-barrier film complex as shown in Figure 4 for described hot melt cutter.
Step 3: lamination.Negative plate 52, positive plate-barrier film complex 51 are stacked alternately together one by one, do poling group (will guarantee during lamination that negative plate 52 encases the positive plate in described positive plate-barrier film complex 51).Then rubberizing fixed pole group, prevents negative plate 52 or positive pole-barrier film complex 51 from moving.Pole group after lamination as shown in Figure 5.
Step 4: welding.The side contacted with positive cover in pole group is superimposed with a slice aluminium foil identical with positive plate shape, then by the lug of aluminium foil together with the tab welding of the positive plate in the group of described pole, cut off unwanted lug part, and rubberizing.The lug of negative plate and nickel strap are welded together, cuts off unwanted lug part, and rubberizing.Then enter shell, nickel strap and negative electrode casing spot-welded together.Enter the welding situation before shell as shown in Figure 6, wherein 61 be described welding and prune after anode ear, 62 be described welding and pruning after negative electrode lug, 63 is described nickel strap, and this part can be spot-welded together with negative electrode casing.
Through overbaking, fluid injection, sealing, ageing, preliminary filling, aluminium foil and positive cover can keep good contact always, thus form complete button lithium ion battery.
Above embodiment 1 is exemplary embodiment of the present invention just, and should not be construed the restriction to the scope of the claims of the present invention, every under Spirit Essence of the present invention, the change made and improvement, all belong to the protection range of patent of the present invention.
Claims (9)
1. a high-energy-density button lithium ion battery manufacture method, comprises punching, hot melt, lamination, welding, and baking, fluid injection, sealing, ageing and preliminary filling, wherein: punching is will just with cutting die, negative pole is washed into small pieces, hot melt positive plate and barrier film is made positive plate-barrier film complex (possibility is that negative plate and barrier film are made negative plate-barrier film complex), lamination negative plate and positive plate-barrier film complex is alternately stacked to do poling group and rubberizing, welding is that the side first contacted with positive cover in pole group is superimposed with a slice aluminium foil identical with positive plate shape, then by the lug of aluminium foil together with the tab welding of positive plate in the group of described pole, and rubberizing, again the lug of negative plate and nickel strap are welded together, after entering shell, (possibility is that the side contacted with negative electrode casing in pole group is superimposed with a slice Copper Foil identical with negative plate shape spot-welded together with negative electrode casing for nickel strap, then by the lug of Copper Foil together with the tab welding of negative plate in the group of described pole, the lug of positive plate and aluminium nickel composite tape are connected together, enter after shell aluminium nickel composite band and positive cover spot-welded together).
2. hot melt according to claim 1, is characterized in that: be placed in the middle of two-layer barrier film by the dressing part of positive plate, then aims at the barrier film pressure of dressing edge with hot melt cutter, makes upper and lower two-layer barrier film fusion.
3. hot melt cutter according to claim 2, is characterized in that: hot melt knife-edge edge exceeds positive plate dressing edge 0 ~ 2.0mm, and the lug position of the positive plate described in correspondence is jagged.
4. hot melt according to claim 1 (possibility part), is characterized in that: be placed in the middle of two-layer barrier film by the dressing part of negative plate, then aims at the barrier film pressure of dressing edge with hot melt cutter, makes upper and lower two-layer barrier film fusion.
5. hot melt cutter according to claim 4, is characterized in that: hot melt knife-edge edge exceeds negative plate dressing edge 0 ~ 2.0mm, and the lug position of the negative plate described in correspondence is jagged.
6. welding according to claim 1, is characterized in that: the side first contacted with positive cover in pole group is superimposed with one or more pieces and with the aluminium foil of lug, then by the lug of aluminium foil together with the tab welding of positive plate.
7. welding according to claim 1, it is characterized in that: when the side that pole group contacts with positive cover is positive pole one side, and the aluminium foil side of described positive pole one side is not when being coated with barrier film, can directly by the tab welding of positive plate in the group of pole together.
8. welding according to claim 1 (possibility part), is characterized in that: the side first contacted with negative electrode casing in pole group is superimposed with one or more pieces Copper Foils with lug, then by the lug of Copper Foil together with the tab welding of negative plate.
9. welding according to claim 1 (possibility part), it is characterized in that: when the side that pole group contacts with negative electrode casing is negative pole one side, and the Copper Foil side of described negative pole one side is not when being coated with barrier film, can directly by the tab welding of negative plate in the group of pole together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258503.4A CN104253286A (en) | 2013-06-26 | 2013-06-26 | Manufacturing method of high-energy-density button lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258503.4A CN104253286A (en) | 2013-06-26 | 2013-06-26 | Manufacturing method of high-energy-density button lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN104253286A true CN104253286A (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310258503.4A Pending CN104253286A (en) | 2013-06-26 | 2013-06-26 | Manufacturing method of high-energy-density button lithium ion battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552275A (en) * | 2016-02-26 | 2016-05-04 | 重庆市紫建电子有限公司 | Button type rechargeable lithium ion battery |
| CN106601960A (en) * | 2016-12-30 | 2017-04-26 | 重庆市紫建电子有限公司 | Button battery and manufacturing method therefor |
| CN108134130A (en) * | 2018-01-18 | 2018-06-08 | 深圳市格瑞普电池有限公司 | Button laminated lithium ion battery |
| CN108400377A (en) * | 2018-01-18 | 2018-08-14 | 深圳市格瑞普电池有限公司 | Button laminated lithium ion battery |
| CN110447142A (en) * | 2017-03-24 | 2019-11-12 | 株式会社村田制作所 | Secondary cell |
| CN111224054A (en) * | 2020-01-19 | 2020-06-02 | 深圳市言九电子科技有限公司 | Quick-charging type high-capacity button battery |
| WO2021068705A1 (en) * | 2019-10-10 | 2021-04-15 | 宁德时代新能源科技股份有限公司 | Method for fabricating electrode assembly of secondary battery and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174681A (en) * | 2006-10-30 | 2008-05-07 | 比亚迪股份有限公司 | Pole piece complex body, electric core and lithium ion battery |
| CN101431165A (en) * | 2008-04-28 | 2009-05-13 | 耀安电池电源科技（深圳）有限公司 | Secondary lithium battery and method for manufacturing the same |
| CN102306724A (en) * | 2011-08-05 | 2012-01-04 | 青岛乾运高科新材料有限公司 | Rechargeable lithium ion button battery and preparation method for cathode of rechargeable lithium ion button battery |
| CN202695638U (en) * | 2012-06-07 | 2013-01-23 | 杨明 | Button type lithium ion battery |
-
2013
- 2013-06-26 CN CN201310258503.4A patent/CN104253286A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174681A (en) * | 2006-10-30 | 2008-05-07 | 比亚迪股份有限公司 | Pole piece complex body, electric core and lithium ion battery |
| CN101431165A (en) * | 2008-04-28 | 2009-05-13 | 耀安电池电源科技（深圳）有限公司 | Secondary lithium battery and method for manufacturing the same |
| CN102306724A (en) * | 2011-08-05 | 2012-01-04 | 青岛乾运高科新材料有限公司 | Rechargeable lithium ion button battery and preparation method for cathode of rechargeable lithium ion button battery |
| CN202695638U (en) * | 2012-06-07 | 2013-01-23 | 杨明 | Button type lithium ion battery |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552275A (en) * | 2016-02-26 | 2016-05-04 | 重庆市紫建电子有限公司 | Button type rechargeable lithium ion battery |
| CN105552275B (en) * | 2016-02-26 | 2018-06-12 | 重庆市紫建电子有限公司 | A kind of buckle type rechargeable lithium ion battery |
| CN106601960A (en) * | 2016-12-30 | 2017-04-26 | 重庆市紫建电子有限公司 | Button battery and manufacturing method therefor |
| CN106601960B (en) * | 2016-12-30 | 2023-10-13 | 重庆市紫建电子有限公司 | Button cell and manufacturing method thereof |
| CN110447142A (en) * | 2017-03-24 | 2019-11-12 | 株式会社村田制作所 | Secondary cell |
| CN108134130A (en) * | 2018-01-18 | 2018-06-08 | 深圳市格瑞普电池有限公司 | Button laminated lithium ion battery |
| CN108400377A (en) * | 2018-01-18 | 2018-08-14 | 深圳市格瑞普电池有限公司 | Button laminated lithium ion battery |
| WO2021068705A1 (en) * | 2019-10-10 | 2021-04-15 | 宁德时代新能源科技股份有限公司 | Method for fabricating electrode assembly of secondary battery and device |
| US11961955B2 (en) | 2019-10-10 | 2024-04-16 | Contemporary Amperex Technology Co., Limited | Method and apparatus for manufacturing electrode assembly of secondary battery |
| CN111224054A (en) * | 2020-01-19 | 2020-06-02 | 深圳市言九电子科技有限公司 | Quick-charging type high-capacity button battery |
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Application publication date: 20141231 |
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