CN103579563B - A kind of cylinder fills 2000mAh lithium-ion-power cell and manufacture method soon - Google Patents
A kind of cylinder fills 2000mAh lithium-ion-power cell and manufacture method soon Download PDFInfo
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- CN103579563B CN103579563B CN201310570178.5A CN201310570178A CN103579563B CN 103579563 B CN103579563 B CN 103579563B CN 201310570178 A CN201310570178 A CN 201310570178A CN 103579563 B CN103579563 B CN 103579563B
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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
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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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
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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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Abstract
The invention discloses a kind of 18650 cylinder fast charging type 2000mAh lithium-ion-power cell and manufacture methods, relate to lithium rechargeable battery manufacturing technology field.This power brick is containing positive plate, negative plate, barrier film, electrolyte and battery case, positive plate applies anode sizing agent by aluminium foil and forms, negative plate applies cathode size by Copper Foil and forms, anode sizing agent comprises positive electrode active materials, conductive agent, binding agent etc., cathode size comprises Delanium, conductive agent, binding agent etc., and battery case is blocked a shot by housing and compound and formed.The present invention adopts pole piece formula and the structural design of optimization, and make battery possess high power capacity, low internal resistance feature, battery can carry out high current charge-discharge, and cycle performance of battery is good, main as electric tool and vehicle power power supply.
Description
Technical field
What the present invention relates to is a kind of fast charging type cylinder 18650-2000mAh lithium-ion-power cell and manufacture method thereof, belongs to technical field of lithium ion secondary.This power brick is containing positive plate, negative plate, barrier film, electrolyte and battery case, positive plate applies anode sizing agent by aluminium foil and forms, negative plate applies cathode size by Copper Foil and forms, barrier film is have the polypropylene of micropore or polyethylene or three-layer polypropylene/polyethylene/polypropylene laminated film, and battery case is made up of Stainless Steel Shell and block.Battery appearance is cylinder, body diameter 18mm, high 65mm, and battery pole group is winding-type electrode assemblie.
Background technology
Lithium-ion-power cell has the advantages such as energy is high, lightweight, environmental protection is pollution-free, has wide range of applications, and its application comprises electric tool, household electrical appliance, electric automobile, Aero-Space and weaponry etc.Along with the continuous progress of technology, the fail safe of lithium-ion-power cell improves constantly, cost constantly declines, the capacity of lithium ion single battery is also increasing, power consumption equipment also has this more and more higher requirement to the rapid charge characteristic of battery simultaneously, and therefore researching and developing a kind of fast charging type high-capacity lithium ion power battery becomes one of market demand trend.
Difference on positive and negative pole material and electrolyte, battery process formula makes battery have different performances, and especially the performance impact of positive electrode to battery is maximum.Anode material for lithium-ion batteries in the market mainly contains cobalt acid lithium (LiCoO
2), LiMn2O4 (LiMn
2o
4), ternary material (Li (NiCoMn) O
2) and LiFePO 4 (LiFePO
4).Ternary material battery because of its combination property superior, become most promising power tool battery.And cylinder 18650 battery capacity is increased to 2000mAh from 1300mAh, need the volumetric specific energy significantly improving battery on the one hand, on the other hand in order to meet high current charge-discharge, need to reduce the internal resistance of cell as far as possible, improve battery multiplying power discharging property, this just needs to do larger adjustment in the selection of battery raw and auxiliary material, battery process parameter, electrode formulation and configuration aspects.
Summary of the invention
The invention provides a kind of fast charging type cylinder 18650-2000mAh lithium-ion-power cell and manufacture method thereof, this battery rated capacity 2000mAh, can realize high current charge-discharge, and security performance is good, and big current cycle performance is superior.
Lithium-ion-power cell provided by the invention comprises positive plate, negative plate, barrier film, electrolyte and battery case, positive plate applies anode sizing agent by aluminium foil and forms, negative plate applies cathode size by Copper Foil and forms, barrier film is the polypropylene of the 15-20 μm of thickness with micropore or polyethylene or three-layer polypropylene/polyethylene/polypropylene laminated film, and battery case is blocked a shot by cylindrical nickel plating box hat and compound and formed.
Described anode sizing agent composition (percentage by weight) is by tertiary cathode material 93%-98%, conductive agent 1%-5%, binding agent 1%-5%; Cathode size composition (percentage by weight) is by graphous graphite powder 90%-96%, conductive agent 1%-6%, binding agent 1%-6%.
Described conductive agent is one or more in SuperP, electrically conductive graphite, Ketjen black, carbon nano-tube, and binding agent is Kynoar and styrene butadiene rubber sbr.
Described battery appearance is cylinder, body diameter 18mm, high 65mm, and battery pole group is winding-type electrode assemblie, battery rated capacity 2000mAh.
A kind of fast charging type cylinder 18650-2000mAh lithium-ion-power cell provided by the invention and manufacture method thereof, comprise the following steps:
(1) preparation of positive pole.Positive electrode active materials and conductive agent being placed in the 1-METHYLPYRROLIDONE solution containing binding agent, by stirring and evenly mixing formation anode sizing agent, being coated on aluminium foil;
(2) preparation of negative pole.Graphous graphite powder and conductive agent being placed in the deionized water solution containing binding agent, by stirring and evenly mixing formation cathode size, being coated on Copper Foil;
(3) preparation of positive/negative plate.By both positive and negative polarity oven dry, roll-in, itemize, film-making;
(4) assembling of battery.Winding after positive/negative plate superposition is made pole group by technique routinely, places barrier film, then load battery case between positive/negative plate, seals, namely obtain lithium-ion-power cell after changing into by vacuum liquid injecting machine after injecting electrolyte.
The beneficial effect of the present invention compared with traditional handicraft is: the cylinder 18650 lithium-ion-power cell capacity that the present invention manufactures is high, rated capacity is 2000mAh, cell safety is reliable, more than 20A heavy-current discharge can be realized, big current cycle performance is superior, and can quick charge be realized, maximum charging current 10A(5C).Adopt both positive and negative polarity active material and novel conductive agent that gram volume is higher, optimize the technological parameters such as pole piece length, thickness, compacted density, significantly improve volumetric specific energy and the high-rate charge-discharge capability of battery.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that the present invention makes battery.
Fig. 2 is the cycle graph that the present invention makes battery 1C/2C charging 10A electric discharge.
Fig. 3 is the cycle graph that the present invention makes battery 2C/5C charging 20A electric discharge.
Embodiment
The present invention will be described below to enumerate specific embodiment.
Embodiment 1:
Select tap density 2-2.8g/cm
3, specific area 0.2-0.5m
2/ g, D
50for 7-13 μm, the ternary positive electrode active material of gram volume 145-175mAh/g.Select tap density 1.0-1.2g/cm
3, specific area 1.5-3.0m
2/ g, D
509-13 μm, the graphous graphite powder of gram volume 340-380mAh/g is as negative material.
Be positive electrode active materials, the Ketjen black of 2.5%, the Kynoar of 2% of 95.5% by percentage by weight, mix after adding the 1-METHYLPYRROLIDONE solvent accounting for amount of solid 50%, make anode sizing agent, anode sizing agent is coated on 16 μm of thick metal aluminum foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 90 μm of thick positive plates.
Be graphous graphite powder, the SuperP of 3%, the SBR of 3% of 94% by percentage by weight, mix after adding the deionized water accounting for amount of solid 130%, make cathode size, cathode size is coated on 9 μm of thick metal copper foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 90 μm of thick negative plates.
Positive/negative plate is cut into strip, one section of tinsel soldering polar ear is reserved at positive plate 1/3rd place, negative plate two ends also respectively reserve one section of tinsel soldering polar ear, cylindric pole group is wound into after being superposed by positive/negative plate, place barrier film between positive/negative plate, barrier film used is the polyethylene film of 16 μm of thickness.The lug Laser Welding that positive plate is drawn is welded on block to conflux sheet place, the lug that negative plate is drawn is welded to outer casing bottom, electrolyte vacuum injects, and is namely assembled into 18650 batteries after sealing changes into.
Adopt above parameter and manufacturing process, the housing diameter 18mm of the 18650 cylindrical steel housing batteries made, high 65mm, capacity 2010mAh, internal resistance of cell 13.5m Ω, the 4A charging 20A discharge cycles life-span reaches more than 300 times, capacity dimension holdup 82.5%.
Embodiment 2:
Be ternary positive electrode active material, the Ketjen black of 3%, the Kynoar of 2% of 95% by percentage by weight, mix after adding the 1-METHYLPYRROLIDONE solvent accounting for amount of solid 50%, make anode sizing agent, anode sizing agent is coated on 16 μm of thick metal aluminum foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 90 μm of thick positive plates.
Be graphous graphite powder, the SuperP of 3%, the SBR of 3% of 94% by percentage by weight, mix after adding the deionized water accounting for amount of solid 130%, make cathode size, cathode size is coated on 12 μm of thick metal copper foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 100 μm of thick negative plates.
Positive/negative plate is cut into strip, one section of tinsel soldering polar ear is reserved at positive plate 1/3rd place, negative plate two ends also reserve one section of tinsel soldering polar ear, cylindric pole group is wound into after being superposed by positive/negative plate, place barrier film between positive/negative plate, barrier film used is the polypropylene, polyethylene/polypropylene composite film of 16 μm of thickness.The lug Laser Welding that positive plate is drawn is welded on block to conflux sheet place, the lug that negative plate is drawn is welded to outer casing bottom, electrolyte vacuum injects, and is namely assembled into 18650 batteries after sealing changes into.
Adopt above parameter and manufacturing process, the housing diameter 18mm of the 18650 cylindrical steel housing batteries made, high 65mm, capacity 2025mAh, internal resistance of cell 14.0m Ω, the 4A charging 20A discharge cycles life-span reaches more than 300 times, capacity dimension holdup 81.9%.
Embodiment 3:
Be ternary positive electrode active material, the Ketjen black of 2.5%, the Kynoar of 2% of 95.5% by percentage by weight, mix after adding the 1-METHYLPYRROLIDONE solvent accounting for amount of solid 50%, make anode sizing agent, anode sizing agent is coated on 16 μm of thick metal aluminum foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 100 μm of thick positive plates.
Be the graphous graphite powder of 93%, carbon nano-tube, the electrically conductive graphite of 2%, the SBR of 3% of 2% by percentage by weight, mix after adding the deionized water accounting for amount of solid 130%, make cathode size, cathode size is coated on 9 μm of thick metal copper foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 100 μm of thick negative plates.
Positive/negative plate is cut into strip, one section of tinsel soldering polar ear is reserved at positive plate 1/3rd place, negative plate two ends also reserve one section of tinsel soldering polar ear, cylindric pole group is wound into after being superposed by positive/negative plate, place barrier film between positive/negative plate, barrier film used is the single layer polyethylene film of 16 μm of thickness.The lug Laser Welding that positive plate is drawn is welded on block to conflux sheet place, the lug that negative plate is drawn is welded to outer casing bottom, electrolyte vacuum injects, and is namely assembled into 18650 batteries after sealing changes into.
Adopt above parameter and manufacturing process, the housing diameter 18mm of the 18650 cylindrical steel housing batteries made, high 65mm, capacity 2030mAh, internal resistance of cell 14.1m Ω, the 4A charging 20A discharge cycles life-span reaches more than 300 times, capacity dimension holdup 81.9%.
Embodiment 4:
Be the ternary positive electrode active material of 95%, Ketjen black, the electrically conductive graphite of 1.5%, the Kynoar of 2% of 1.5% by percentage by weight, mix after adding the 1-METHYLPYRROLIDONE solvent accounting for amount of solid 50%, make anode sizing agent, anode sizing agent is coated on 16 μm of thick metal aluminum foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 90 μm of thick positive plates.
Be the graphous graphite powder of 94%, carbon nano-tube, the electrically conductive graphite of 1%, the SBR of 3% of 2% by percentage by weight, mix after adding the deionized water accounting for amount of solid 130%, make cathode size, cathode size is coated on 9 μm of thick metal copper foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 100 μm of thick negative plates.
Positive/negative plate is cut into strip, one section of tinsel soldering polar ear is reserved at positive plate 1/3rd place, negative plate two ends also reserve one section of tinsel soldering polar ear, cylindric pole group is wound into after being superposed by positive/negative plate, place barrier film between positive/negative plate, barrier film used is the single layer polyethylene film of 16 μm of thickness.The lug Laser Welding that positive plate is drawn is welded on block to conflux sheet place, the lug that negative plate is drawn is welded to outer casing bottom, electrolyte vacuum injects, and is namely assembled into 18650 batteries after sealing changes into.
Adopt above parameter and manufacturing process, the housing diameter 18mm of the 18650 cylindrical steel housing batteries made, high 65mm, capacity 2010mAh, internal resistance of cell 14.3m Ω, the 4A charging 20A discharge cycles life-span reaches more than 300 times, capacity dimension holdup 81.8%.
Embodiment 5:
Be the ternary positive electrode active material of 95%, Ketjen black, the electrically conductive graphite of 1%, the Kynoar of 2% of 2% by percentage by weight, mix after adding the 1-METHYLPYRROLIDONE solvent accounting for amount of solid 50%, make anode sizing agent, anode sizing agent is coated on 16 μm of thick metal aluminum foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 100 μm of thick positive plates.
Be the graphous graphite powder of 94%, carbon nano-tube, the electrically conductive graphite of 1%, the SBR of 3% of 2% by percentage by weight, mix after adding the deionized water accounting for amount of solid 130%, make cathode size, cathode size is coated on 9 μm of thick metal copper foils, at the temperature of 80-110 DEG C after drying, be rolled into thickness about 100 μm of thick negative plates.
Positive/negative plate is cut into strip, one section of tinsel soldering polar ear is reserved at positive plate 1/3rd place, negative plate two ends also reserve one section of tinsel soldering polar ear, cylindric pole group is wound into after being superposed by positive/negative plate, place barrier film between positive/negative plate, barrier film used is the polypropylene, polyethylene/polypropylene composite film of 20 μm of thickness.The lug Laser Welding that positive plate is drawn is welded on block to conflux sheet place, the lug that negative plate is drawn is welded to outer casing bottom, electrolyte vacuum injects, and is namely assembled into 18650 batteries after sealing changes into.
Adopt above parameter and manufacturing process, the housing diameter 18mm of the 18650 cylindrical steel housing batteries made, high 65mm, capacity 2010mAh, internal resistance of cell 14.5m Ω, the 4A charging 20A discharge cycles life-span reaches more than 300 times, capacity dimension holdup 80.2%.
Claims (1)
1. a cylinder fills 2000mAh lithium-ion-power cell soon, it is characterized in that, this power brick is containing positive plate, negative plate, barrier film, electrolyte and battery case, positive plate applies anode sizing agent by aluminium foil and forms, negative plate applies cathode size by Copper Foil and forms, barrier film is the polypropylene of the 15-20 μm of thickness with micropore or polyethylene or three-layer polypropylene/polyethylene/polypropylene laminated film, and battery case is blocked a shot by cylindrical nickel plating box hat and compound and formed;
By weight percentage, anode sizing agent by the positive active material of 95.5%, the conductive agent of 2.5% and 2% binding agent form, cathode size by the graphous graphite powder of 94%, the conductive agent of 3% and 3% binding agent form;
Positive active material is cobalt nickel lithium manganate ternary material;
Conductive agent is one or more in SuperP, electrically conductive graphite, Ketjen black, carbon nano-tube, and binding agent is Kynoar and styrene butadiene rubber sbr;
Battery appearance is cylinder, body diameter 18mm, high 65mm, and battery pole group is winding-type electrode assemblie, and battery capacity is not less than 2000mAh.
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| CN103579563B true CN103579563B (en) | 2016-04-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022278B (en) * | 2014-06-19 | 2016-08-24 | 广西卓能新能源科技有限公司 | A kind of cylindrical lithium ion battery battery core and preparation method thereof |
| CN104157877A (en) * | 2014-08-20 | 2014-11-19 | 广西卓能新能源科技有限公司 | Lithium ion battery electrical core and preparation method thereof |
| CN105895949A (en) * | 2014-10-08 | 2016-08-24 | 江苏海四达电源股份有限公司 | Preparation of cylindrical 2200mAh lithium ion power battery with high capacity and high current discharge |
| CN109148823B (en) * | 2018-08-23 | 2019-07-26 | 宁波瞬能科技有限公司 | One kind is ultrafast to fill lithium ion battery electrode and its preparation method and application |
| CN109841896A (en) * | 2019-03-11 | 2019-06-04 | 浙江凯恩电池有限公司 | High capacity cylinder small household appliances power lithium-ion battery and its manufacturing method |
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| CN101510625A (en) * | 2009-03-26 | 2009-08-19 | 西安瑟福能源科技有限公司 | Ultra-high magnification lithium ion battery |
| CN102306730A (en) * | 2011-08-08 | 2012-01-04 | 能一郎科技股份有限公司 | Method for improving safety of high-capacity lithium ion power battery |
| CN202917600U (en) * | 2012-11-13 | 2013-05-01 | 秦皇岛市芯驰光电科技有限公司 | Aluminum-plastic packed high-power lithium ion battery |
| CN104112846A (en) * | 2013-04-19 | 2014-10-22 | 南通力合新能源有限公司 | High-capacity lithium-ion battery used for electric tool and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510625A (en) * | 2009-03-26 | 2009-08-19 | 西安瑟福能源科技有限公司 | Ultra-high magnification lithium ion battery |
| CN102306730A (en) * | 2011-08-08 | 2012-01-04 | 能一郎科技股份有限公司 | Method for improving safety of high-capacity lithium ion power battery |
| CN202917600U (en) * | 2012-11-13 | 2013-05-01 | 秦皇岛市芯驰光电科技有限公司 | Aluminum-plastic packed high-power lithium ion battery |
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Address after: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Patentee after: Jiangsu haisida power supply Co.,Ltd. Address before: 226200 No.306 Heping South Road, Qidong City, Nantong City, Jiangsu Province Patentee before: JIANGSU HIGHSTAR BATTERY MANUFACTURING Co.,Ltd. |
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