CN205028971U - Cylinder type soft package lithium -ion battery - Google Patents
Cylinder type soft package lithium -ion battery Download PDFInfo
- Publication number
- CN205028971U CN205028971U CN201520796313.2U CN201520796313U CN205028971U CN 205028971 U CN205028971 U CN 205028971U CN 201520796313 U CN201520796313 U CN 201520796313U CN 205028971 U CN205028971 U CN 205028971U
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- pole piece
- lug
- ion battery
- utmost point
- cylindrical
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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Abstract
The utility model provides a cylinder type soft package lithium -ion battery, including cylinder electricity core and plastic -aluminum membrane, cylinder electricity core is separated to convolute through the diaphragm with the negative pole pole piece by anodal pole piece to form, the cutting has a plurality of aluminium foils utmost point ear on the anodal pole piece, and the cutting has a plurality of copper foils utmost point ear on the negative pole pole piece, and utmost point ear interval is calculated according to cylinder battery design diameter for pole piece coiling in -process utmost point ear inlayer overlaps with outer, aluminium foil utmost point ear is connected with the aluminium strip, copper foil utmost point ear is connected with the nickel strap, and the periphery sets up high temperature adhesive tape respectively to respectively along cylinder electricity in -core reason buckle and with cylinder electricity core fixed connection, the plastic -aluminum membrane encapsulates in the periphery of cylinder electricity core and utmost point ear. The utility model discloses need not effectively to reduce coiling battery diameter, the shaping of being convenient for at pole piece inner weld utmost point ear.
Description
Technical field
The utility model belongs to technical field of lithium ion, particularly relates to a kind of cylindrical flexible package lithium-ion battery structure.
Background technology
Along with the demand sharp increase of digital product, lithium ion battery also develops rapidly, and become one of hot fields of International Electrochemical research, the chemical property, security performance, specific energy etc. of flexible packing lithium ion battery are with the obvious advantage, and profile and capacity can customize arbitrarily, change model cost low; Cylindrical battery has that production efficiency is high, rate of finished products advantages of higher, metal shell is heavier, Variant number is dumb, cylindrical flexible package lithium-ion battery is then in conjunction with the two advantage, change cylindrical battery shell into flexible package, therefore specific energy, fail safe, Variant number economy all improve, therefore at field application expanding days such as number, model plane, military project, electric motor cars;
Along with the improvement day by day of digital product, market proposes more and more higher requirement to the high rate performance of cylindrical flexible package lithium-ion battery, but lug can only be changed to pole piece centre position from pole piece two ends, increases certain conductive agent ratio by traditional lithium ion battery, suitably reduce the modes such as the compacted density of positive and negative pole material changes, the internal resistance of cylindrical flexible package lithium-ion battery and lug size are difficult to do larger change, and lug needs to be welded on pole piece, production difficulty is large, production efficiency is low, and therefore high rate performance is difficult to reach the market demand.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of high-magnification cylinder-shaped flexible packing lithium ion battery, solves the shortcoming that cylindrical flexible package lithium-ion battery high rate performance is low, make difficulty.
A kind of cylindrical flexible package lithium-ion battery, comprise cylindrical electrical core and aluminum plastic film, described cylindrical electrical core separates winding by anode pole piece and cathode pole piece by barrier film to form; Described anode pole piece is cut with multiple aluminium foil lug, cathode pole piece is cut with multiple Copper Foil lug, lug spacing calculates according to cylindrical battery intended diameter, makes lug internal layer and outer ply in pole piece coiling process; Described aluminium foil lug is connected with aluminium strip, and described Copper Foil lug is connected with nickel strap, and periphery arranges high temperature gummed tape respectively, and bends along cylindrical electrical core inner edge respectively and be fixedly connected with cylindrical electrical core; Described aluminum plastic film is packaged in the periphery of cylindrical electrical core and lug.
Further, described aluminium foil lug post and aluminium strip be smooth to be superposed employing and is welded to connect, and described Copper Foil lug post adopts smooth superposition to be welded to connect with nickel strap, is welded to connect part beyond district and is cropped neat, be welded to connect periphery, district and arrange high temperature gummed tape.
Further, pole piece adopt cross cutting or laser cutting obtain lug.
Further, described anode pole piece is coated with positive electrode, in described positive electrode, main material is a kind of in cobalt acid lithium, LiMn2O4, ternary material or mixes between two, or selects LiFePO4; Conductive agent is Graphene.
Further, described cathode pole piece is coated with negative material, in described negative material, main material is MCMB, and conductive agent is Graphene.
Compared with prior art, advantage of the present utility model and good effect are: the utility model provides a kind of cylindrical flexible package lithium-ion battery structure, adopt multi pole ears cutting or the mode of cross cutting, without the need at pole piece interior welds lug, can effectively reduce winding battery diameter, be convenient to shaping; Multi pole ears winding-structure effectively can reduce lithium ion battery internal resistance, is convenient to the encapsulation of lug and aluminum plastic film.
Accompanying drawing explanation
Fig. 1 multi pole ears pole piece structure of the present utility model schematic diagram;
Fig. 2 winding battery core of the present utility model bilateral goes out extreme ear structure figure;
Fig. 3 winding battery core of the present utility model bilateral tab welding figure;
Fig. 4 winding battery core of the present utility model bilateral lug and aluminum plastic film encapsulate schemes.
Mark in figure: 1, pole piece, 2, lug, 21, Copper Foil lug, 22, aluminium foil lug, 3, cylindrical electrical core, 41, nickel strap, 42, aluminium strip, 5, aluminum plastic film.
Embodiment
Below in conjunction with embodiment, the technical solution of the utility model is described in further detail.
The technical scheme that the utility model adopts is: a kind of high-magnification cylinder-shaped flexible packing lithium ion battery, and its structure comprises cylindrical electrical core 3 and aluminum plastic film 5, and described cylindrical electrical core separates winding by anode pole piece and cathode pole piece by barrier film to form; Described anode pole piece is cut with multiple aluminium foil lug 22, cathode pole piece is cut with multiple Copper Foil lug 21, lug spacing calculates according to cylindrical battery intended diameter, makes lug internal layer and outer ply in pole piece coiling process; Described aluminium foil lug and aluminium strip 42 are welded to connect, and described Copper Foil lug and nickel strap 41 are welded to connect, and be welded to connect part beyond district and be cropped neat, periphery, weld zone arranges high temperature gummed tape respectively, and bends along cylindrical electrical core inner edge respectively and be fixedly connected with cylindrical electrical core; Described aluminum plastic film is wrapped in the periphery of cylindrical electrical core and lug.
The preparation method of described high-magnification cylinder-shaped flexible packing lithium ion battery, step is as follows:
1) be coated with on aluminium foil after positive electrode being stirred, roll-in obtains anode pole piece, on anode pole piece aluminium foil room, then cut out multiple aluminium foil lug 22 and section is cut; Same negative material is stirred after be coated with on Copper Foil, roll-in obtains cathode pole piece, on cathode pole piece Copper Foil room, then cuts out multiple Copper Foil lug 21 and section is cut.Lug spacing on pole piece and quantity can calculate according to cylindrical battery intended diameter, guarantee lug internal layer and outer ply, weld with nickel strap or aluminium strip to facilitate lug.The cutting mode of described lug adopts cross cutting or laser cutting; The utility model adopts the mode of multi pole ears cutting or cross cutting, without the need at pole piece interior welds lug, can effectively reduce winding battery diameter, be convenient to shaping.
The main material of described positive electrode is selected a kind of in cobalt acid lithium, LiMn2O4, ternary material or mixes between two, or selects LiFePO4; The main material of negative material is preferably MCMB, adds grapheme material respectively as conductive agent in positive electrode and negative material.
2) section is cut and rear positive plate, barrier film, negative plate are carried out to winding and form cylindrical electrical core 3, surveys short circuit.
3) after test passes, by the aluminium strip of band tab and aluminium foil tab welding, by the nickel strap of band tab and Copper Foil tab welding.Described welding process need by smoothly to nickel strap 41 and Copper Foil lug 21 superposing, aluminium strip 42 superposes with aluminium foil lug 22 is smooth, and then welds; After having welded, part beyond part, aluminium strip 42 and aluminium foil lug 22 weld zone beyond nickel strap 41 and Copper Foil lug 21 weld zone need be cropped neat, the weld zone of the weld zone and aluminium strip 42 and aluminium foil lug 22 of fixing nickel strap 41 and Copper Foil lug 21 respectively with high temperature gummed tape is on cylindrical electrical core 3, as shown in Figure 3, above-mentioned weld zone all bends along cylindrical electrical core 3 inner edge and fixes with high temperature gummed tape, in case aluminum plastic film 5 is stabbed in weld zone.
4) then cylindrical electrical core 3 is positioned over the encapsulation carrying out aluminum plastic film and tab in aluminum plastic film 5, encapsulated the whether short circuit of rear test battery core, the battery core that is not short-circuited enters cylindrical flexible package lithium-ion battery normal procedure successively and produces.
In above-mentioned preparation process, to aluminum plastic film housing design, the bulk after the bending of tab welding position need be taken into full account; To the design of nickel strap and aluminium strip cross-sectional area, need meet discharge-rate requirement, the tab width on nickel strap and aluminium strip can not be greater than the width of closedtop place aluminum plastic film; The selection of electrolyte and diaphragm material to be needed and positive and negative pole material system matches, meet discharge-rate and safety requirements simultaneously.
Lithium ion battery of the present utility model adopts the mode of multi pole ears cutting or cross cutting, without the need at pole piece interior welds lug, can effectively reduce winding battery diameter, be convenient to shaping; Multi pole ears winding-structure effectively can reduce lithium ion battery internal resistance, is convenient to the encapsulation of lug and aluminum plastic film.The utility model not increasing, lithium ion battery production cost effectively improves the discharge-rate of lithium ion battery, is suitable for large-scale promotion application.
The utility model is not limited to above-described embodiment; For the person of ordinary skill of the art, still the technical scheme described in previous embodiment can be modified, or equivalent replacement is carried out to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model technical scheme required for protection.
Claims (5)
1. a cylindrical flexible package lithium-ion battery, is characterized in that, comprises cylindrical electrical core and aluminum plastic film, and described cylindrical electrical core separates winding by anode pole piece and cathode pole piece by barrier film to form; Described anode pole piece is cut with multiple aluminium foil lug, cathode pole piece is cut with multiple Copper Foil lug, lug spacing calculates according to cylindrical battery intended diameter, makes lug internal layer and outer ply in pole piece coiling process; Described aluminium foil lug is connected with aluminium strip, and described Copper Foil lug is connected with nickel strap, and periphery arranges high temperature gummed tape respectively, and bends along cylindrical electrical core inner edge respectively and be fixedly connected with cylindrical electrical core; Described aluminum plastic film is packaged in the periphery of cylindrical electrical core and lug.
2. a kind of cylindrical flexible package lithium-ion battery according to claim 1, it is characterized in that, described aluminium foil lug post and aluminium strip be smooth to be superposed employing and is welded to connect, described Copper Foil lug post adopts smooth superposition to be welded to connect with nickel strap, be welded to connect part beyond district to be cropped neat, be welded to connect periphery, district and high temperature gummed tape is set.
3. a kind of cylindrical flexible package lithium-ion battery according to claim 1, is characterized in that, pole piece adopts cross cutting or laser cutting obtain lug.
4. a kind of cylindrical flexible package lithium-ion battery according to claim 1, it is characterized in that, described anode pole piece is coated with positive electrode, and in described positive electrode, main material is a kind of in cobalt acid lithium, LiMn2O4, ternary material or mixes between two, or selects LiFePO4; Conductive agent is Graphene.
5. a kind of cylindrical flexible package lithium-ion battery according to claim 1, is characterized in that, described cathode pole piece is coated with negative material, and in described negative material, main material is MCMB, and conductive agent is Graphene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796313.2U CN205028971U (en) | 2015-10-15 | 2015-10-15 | Cylinder type soft package lithium -ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796313.2U CN205028971U (en) | 2015-10-15 | 2015-10-15 | Cylinder type soft package lithium -ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028971U true CN205028971U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520796313.2U Expired - Fee Related CN205028971U (en) | 2015-10-15 | 2015-10-15 | Cylinder type soft package lithium -ion battery |
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| CN (1) | CN205028971U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461811A (en) * | 2018-07-20 | 2018-08-28 | 上海瑞浦青创新能源有限公司 | Pole piece and battery cell for coiled lithium ion battery |
| CN112510212A (en) * | 2020-10-28 | 2021-03-16 | 天津空间电源科技有限公司 | Stress-free end face shaping battery and manufacturing process thereof |
| CN112510325A (en) * | 2020-10-28 | 2021-03-16 | 天津空间电源科技有限公司 | Cylindrical battery with die-cut tabs and manufacturing process thereof |
| CN112913076A (en) * | 2018-11-21 | 2021-06-04 | 深圳市大疆创新科技有限公司 | Intelligent battery and lithium battery core thereof |
| DE212020000679U1 (en) | 2020-05-18 | 2022-05-20 | Linkdata New Energy Co., Ltd. | Cylindrical battery roll core with multiple tabs and lithium-ion battery |
| CN114759271A (en) * | 2022-03-07 | 2022-07-15 | 中山市众旺德新能源科技有限公司 | Method for manufacturing battery roll core, battery and electronic device |
| CN114976512A (en) * | 2021-02-23 | 2022-08-30 | 北京小米移动软件有限公司 | Pole piece, electric core structure, lithium battery and electronic equipment |
-
2015
- 2015-10-15 CN CN201520796313.2U patent/CN205028971U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461811A (en) * | 2018-07-20 | 2018-08-28 | 上海瑞浦青创新能源有限公司 | Pole piece and battery cell for coiled lithium ion battery |
| CN112913076A (en) * | 2018-11-21 | 2021-06-04 | 深圳市大疆创新科技有限公司 | Intelligent battery and lithium battery core thereof |
| DE212020000679U1 (en) | 2020-05-18 | 2022-05-20 | Linkdata New Energy Co., Ltd. | Cylindrical battery roll core with multiple tabs and lithium-ion battery |
| US12212022B2 (en) | 2020-05-18 | 2025-01-28 | Linkdata New Energy Co., Ltd. | Multi-tab cylindrical battery roll core and lithium ion battery |
| CN112510212A (en) * | 2020-10-28 | 2021-03-16 | 天津空间电源科技有限公司 | Stress-free end face shaping battery and manufacturing process thereof |
| CN112510325A (en) * | 2020-10-28 | 2021-03-16 | 天津空间电源科技有限公司 | Cylindrical battery with die-cut tabs and manufacturing process thereof |
| CN114976512A (en) * | 2021-02-23 | 2022-08-30 | 北京小米移动软件有限公司 | Pole piece, electric core structure, lithium battery and electronic equipment |
| CN114759271A (en) * | 2022-03-07 | 2022-07-15 | 中山市众旺德新能源科技有限公司 | Method for manufacturing battery roll core, battery and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Nie Chuankai Inventor after: Zhao Changfeng Inventor before: Zhao Changfeng Inventor before: Nie Chuankai |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160720 Address after: 266000 No. 826-11 East China Road, hi tech Industrial Development Zone, Shandong, Qingdao, China Patentee after: QINGDAO COWOO ENERGY TECHNOLOGY Co.,Ltd. Address before: 266000 No. 826-7 East China Road, hi tech Industrial Development Zone, Shandong, Qingdao, China Patentee before: QINGDAO LINGJUN ENERGY SAVING AND NEW MATERIAL RESEARCH INSTITUTE |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200109 Address after: No. 615, Chuncheng Road, Chengyang District, Qingdao, Shandong Province Patentee after: QINGDAO LEADER NEW MATERIAL TECHNOLOGY INNOVATION PARK DEVELOPMENT Co.,Ltd. Address before: 266000 No. 826-11 East China Road, hi tech Industrial Development Zone, Shandong, Qingdao, China Patentee before: QINGDAO COWOO ENERGY TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 |