CN104659292B - Cylindricality lithium ion battery and its processing technology - Google Patents
Cylindricality lithium ion battery and its processing technology Download PDFInfo
- Publication number
- CN104659292B CN104659292B CN201510071480.5A CN201510071480A CN104659292B CN 104659292 B CN104659292 B CN 104659292B CN 201510071480 A CN201510071480 A CN 201510071480A CN 104659292 B CN104659292 B CN 104659292B
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- CN
- China
- Prior art keywords
- negative
- cover
- positive
- battery core
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- 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
- H01M50/543—Terminals
-
- 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
-
- 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
- H01M4/0407—Methods of deposition of the material by coating on an electrolyte layer
-
- 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
- H01M4/0419—Methods of deposition of the material involving spraying
-
- 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
-
- 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 present invention relates to cell art, a kind of cylindricality lithium ion battery and its processing technology are refered in particular to；The present invention includes straight tube sandwich type element, positive cover, negative cover, battery core, straight tube sandwich type element both ends open, battery core is located in straight tube sandwich type element, and battery core upper and lower ends have and are just left white, negative be left white and form the positive pole of battery core, negative pole respectively, the inner bottom part of positive cover has the positive contact for being just left white contact with battery core, and positive contact passes positive cover outer end, the inner bottom part of negative cover has the negative negative contact for being left white contact with battery core, and negative contact passes negative cover outer end；The present invention makes positive contact, negative contact realize that face is contacted with battery core using positive cover, the extruding of negative cover, reduces welding procedure, and whole-course automation can be achieved, and battery capacity lifting, safety coefficient lifting saves the input of material and equipment, reduces production cost.
Description
Technical field
The present invention relates to cell art, a kind of cylindricality lithium ion battery and its processing technology are refered in particular to.
Background technology
Existing cylindricality lithium ion battery, the two ends of battery core are respectively arranged with positive electrode seat, negative pole seat, positive electrode seat, negative pole seat
Upper press respectively has positive pole ear, negative lug, positive pole ear, negative lug respectively with the positive pole of positive terminal on cover plate
It is seal-installed on after the negative pole nipple connection of joint and negative terminal in aluminum shell.
For battery core, its structure approximately as：Positive and negative plate top layer is by pressing, piercing the modes such as riveting, ultrasonic bonding
Respectively connect an extraction pole；The shortcoming of the battery core of this structure has：（1）The coating pole piece area that need to leave some space is pressed or pierced
Riveting is operated, and wastes volume space,（2）Damage coating pole piece；Meeting output particle, dust etc. cause potential safety hazard simultaneously；（3）Connection
Internal resistance produces otherness afterwards；（4）Increase production complexity.
In addition, the extraction pole of battery core or coupling peripheral loop directly through sealant, or join with internal terminal on sealant
Connect and peripheral loop is connected to by the external lug of the terminal again；There is also complicated, processing time consuming shortcoming for this structure.
Existing cylindricality lithium ion battery, using the sealed mode in one end, or turn on battery housing and negative pole so as to
It is powered, otherwise positive and negative electrodes in same is necessary for lead-out mode.Both structures make the positive and negative easily contact of battery form short circuit,
So as to produce potential safety hazard.
Because there is the structure of existing cylindricality lithium ion battery lug, battery core to have extraction pole, so, the processing of battery
Process typically has the following two kinds：（1）Dispensing, be coated with, cut, nail joint, volume scratch, cover micelle, fluid injection（Immersion type）, group it is vertical（Enter shell
Sealing one）, chemical conversion, partial volume, packaging；（2）Dispensing, coating, film-making（Lug is connected）, volume scratch, enter shell, slot rolling, fluid injection（Instil
Formula）, sealing, chemical conversion, partial volume, packaging.Both manufacturing procedures all have the shortcomings that more complicated.
Therefore, the defect based on above-mentioned existing cylindricality lithium ion battery and its processing technology is, it is necessary to existing cylindricality
Lithium ion battery and its processing technology are improved.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art a kind of cylindricality lithium ion battery and its processing technology are provided,
It can be solved present in existing battery and processing technology：Complicated, security is low, capacity is limited, processing time consuming
Etc. defect.
To achieve the above object, the present invention is achieved by the following technical solutions：
Cylindricality lithium ion battery, including straight tube sandwich type element, positive cover, negative cover, battery core, straight tube sandwich type element both ends open,
Battery core is located in straight tube sandwich type element, and battery core upper and lower ends have respectively be just left white, it is the negative positive pole for being left white and forming battery core, negative
Pole, the inner bottom part of positive cover has the positive contact for being just left white contact with battery core, and positive contact passes positive cover outer end, negative cover
Inner bottom part there is the negative negative contact for being left white contact with battery core, and negative contact passes negative cover outer end.
Specifically, positive cover forms integral structure with positive contact by being molded fixation.
More specifically, positive cover, be also cased with sealing ring outside negative cover.
Further, positive cover, the lateral wall of negative cover have external screw thread, and the madial wall of straight tube sandwich type element has interior spiral shell
Line.
Further, there is slot rolling, being just left white or bearing for slot rolling correspondence battery core is left white, can made on straight tube sandwich type element
Positive cover or negative cover are more in close contact with battery core.
Present invention additionally comprises the processing technology for preparing above-mentioned cylindricality lithium ion battery, production process includes dispensing, coating, cut out
Cut, roll up scratch, fluid injection, group it is vertical, wherein, volume scratch be will coating pole piece retain one end be left white and be rolled into one end be just, the other end be negative
Battery core, the vertical process of group is to fit together battery core, straight tube sandwich type element, positive cover, negative cover, make the positive contact of positive cover with
Just the be left white contact, the negative contact of negative cover of battery core are contacted with negative be left white of battery core.
Wherein, organizing vertical process includes：First battery core is inserted in straight tube sandwich type element, then pressed respectively at straight tube sandwich type element two ends
Enter positive cover, negative cover；Or, first positive cover, negative cover and battery core are packaged, then battery core is filled in straight tube sandwich type element.
Wherein, organize vertical process and also include button side process：Crimping is carried out to the straight tube sandwich type element two ends for having filled in battery core, made
Straight tube sandwich type element two ends are batched and compress positive cover, negative cover.
Further, slot rolling process is also included after the completion of button side process：Slot rolling is processed on straight tube sandwich type element, compressing is just
Polar cap or negative cover.
Further, chemical conversion, partial volume, packaging process are also included after the completion of the vertical process of group.
The beneficial effects of the present invention are：In battery core upper and lower ends formation positive pole, negative pole, positive cover, negative cover are utilized
Extruding makes positive contact, negative contact realize that face is contacted with battery core, reduces welding procedure, whole-course automation can be achieved, battery capacity is carried
Rise, safety coefficient lifting saves the input of material and equipment, reduces production cost.
Brief description of the drawings
Fig. 1 is the principle schematic diagram of the embodiment one of battery of the present invention.
Fig. 2 is the principle schematic diagram of the embodiment two of battery of the present invention.
The principle schematic diagram for the battery pack that Fig. 3 is constituted for the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
See Fig. 1, cylindricality lithium ion battery of the present invention includes：Straight tube sandwich type element 1, positive cover 2, negative cover 3, battery core 4, straight tube
The both ends open of sandwich type element 1, battery core 4 is located in straight tube sandwich type element 1, and the upper and lower ends of battery core 4 have and are just left white 5, negative are left white 6 respectively
And the positive pole of battery core 4, negative pole are formed, the inner bottom part of positive cover 2 has the positive contact 7 for being just left white 5 contacts with battery core 4, and just
Contact 7 passes the outer end of positive cover 2, and the inner bottom part of negative cover 3 has the negative negative contact 8 for being left white 6 contacts with battery core 4, and negative tactile
Piece 8 passes the outer end of negative cover 3, by positive contact 7, the exposed parts of negative contact 8, battery is turned on external circuit；Positive contact 7
It can realize that face is contacted with being just left white 5, negative contact 8 can realize that face is contacted with negative contact 6.
The external form of straight tube sandwich type element 1 can be annular, triangle, ellipse etc..
Specifically, positive cover 2 forms integral structure with positive contact 7 by being molded fixation, process velocity is fast.
More specifically, the outer sealing property for being also cased with sealing ring 9, improving product of positive cover 2, negative cover 3.
Further, there is slot rolling 11, being just left white 5 or bearing for the correspondence battery core 4 of slot rolling 11 is left white on straight tube sandwich type element 1
6, certainly, positive cover 2, the outboard structure of negative cover 3 can be adjusted accordingly.
Positive cover 2, negative cover 3 and the package assembly of straight tube sandwich type element 1 of the present invention, can have two kinds, the first is, sees
Fig. 1, positive cover 2, the lateral wall of negative cover 3 have external screw thread, and the madial wall of straight tube sandwich type element 1 has internal thread, using screw thread
The mode of connection, by controlling positive cover 2, the rotating cycle of negative cover 3 positive contact 7, negative contact 8 extruding battery core 4 is reached company
Close effect is connect, further, the inwall of the position of slot rolling 11 also has screw thread, couples closer；Second is to see Fig. 2, is hung down
Positive cover 2, negative cover 3, are directly pressed into straight tube sandwich type element 1 by the structure directly extruded, make positive contact 7 by control dynamics, bear
The extruding of contact 8 battery core 4 reaches in the close effect of connection, this structure that positive cover 2, negative cover 3 are directly using the shape of gum cover
Shape, meanwhile, can be without sealing ring 9.
Present invention additionally comprises the processing technology for preparing above-mentioned cylindricality lithium ion battery, production process includes dispensing, coating, cut out
Cut, roll up scratch, fluid injection, group it is vertical, wherein, volume scratch be will coating pole piece retain one end be left white and be rolled into one end be just, the other end be negative
Battery core 4, the vertical process of group is to fit together battery core 4, straight tube sandwich type element 1, positive cover 2, negative cover 3, makes positive cover 2 just
Contact 7 is left white 6 with the negative of battery core 4 and contacted be just left white 5 contacts, the negative contact 8 of negative cover 3 of battery core 4.
Wherein, organizing vertical process includes：First battery core 4 is inserted in straight tube sandwich type element 1, then at the two ends of straight tube sandwich type element 1 point
Ya Ru not positive cover 2, negative cover 3；Or, first positive cover 2, negative cover 3 and battery core 4 are packaged, then battery core 4 is filled in into straight barrel type
In housing 1.
Wherein, organize vertical process and also include button side process：Crimping is carried out to the two ends of straight tube sandwich type element 1 for having filled in battery core 4,
The two ends of straight tube sandwich type element 1 is batched and is compressed positive cover 2, negative cover 3, further improve product sealing.
Further, slot rolling process is also included after the completion of button side process：Slot rolling 11 is processed on straight tube sandwich type element 1, is pressed
Compel positive cover 2 or negative cover 3, with reference to the elastic characteristic of sealing ring 9, reach better seal.
Further, chemical conversion, partial volume, packaging process are also included after the completion of the vertical process of group.
The battery of the present invention is positive and negative end deriving structure, is directly connected to external circuit according to polarity and can be used.
Each manufacturing procedure of the present invention can realize mechanization production substantially, reduce the influence of human factor, improve production
Efficiency and product quality.Go for comprehensive size cell that diameter is more than 3mm, be more suitable for different clients application
Demand.
You need to add is that, the present invention can go out battery pack with extending design, as shown in Figure 3：Including upper lid, lower cover, many
Individual battery core, upper lid has multiple structures of positive cover 2 of the invention, and lower cover has multiple structures of negative cover 3 of the invention, positive contact
7th, bear contact 8 has multiple contact sites respectively, is contacted with multiple battery cores 4, for battery pack, the external connection portion of extraction has respectively
Upper and lower two, upper lid can freely be connected the circuit of each battery core 4 with lower cover, for example, the whole positive poles of six groups of battery cores 4 shown in figure
Upward, negative pole down, or, the positive pole of the left side three shown in figure group battery core 4 upward, negative pole down, the negative pole court of three groups of the right battery core 4
Down, to realize different needs for electricity, the both positive and negative polarity of each battery core can change upper, positive pole, and overall internal resistance influence is little,
Therefore not to repeat here.
The present invention battery assembly field that mode assembles battery core such as scratches suitable for positive and negative plate by lamination, volume, does not limit to
In ni-mh, nickel chromium triangle, lithium ion, polymer battery, meanwhile, present invention is also not necessarily limited to the battery of cylinder, other shapes battery
The structure and processing technology of the present invention is may be referred to, the shape in the section that battery core 4 is wound is not limited, the shape in the section that battery core 4 is wound
Shape is not limited, and can be annular, triangle, ellipse etc., similarly, positive cover 2, the shape of negative cover 3 are not limited, and can be annulus
Shape, triangle, ellipse etc..
Advantages of the present invention has：1st, welding procedure is reduced, flow is simplified；2nd, automaticity is improved, whole process can be achieved
Automation；3, the internal resistance uniformity of battery is high, can reach 96%；4th, battery capacity lifting 0.5% under equal volume；5th, safety coefficient
2 times of lifting, removes the burr of lug connection procedure generation and removes the influence that lug is produced in itself；6th, cost is reduced, Ke Yijie
The about Meteorological of lug buying expenses and process equipment.
Certainly, the preferred embodiments of embodiment described above, the simply present invention, not limit the present invention and implement model
Enclose, therefore the equivalent change or modification that all construction, feature and principles according to described in scope of the present invention patent are done, it all should include
In in scope of the present invention patent.
Claims (10)
1. cylindricality lithium ion battery, it is characterised in that：Including straight tube sandwich type element, positive cover, negative cover, battery core, straight tube sandwich type element
Both ends open, battery core is located in straight tube sandwich type element, and battery core upper and lower ends have and are just left white, negative be left white and form electricity respectively
Core
Positive pole, negative pole, the inner bottom part of positive cover have the positive contact for being just left white contact with battery core, and positive contact passes positive cover
Outer end, the inner bottom part of negative cover has the negative negative contact for being left white contact with battery core, and negative contact passes negative cover outer end；Battery core
Be will coating pole piece retain one end be left white and be rolled into one end be just, the other end be negative；Positive contact, negative contact extruding battery core.
2. the cylindricality lithium ion battery according to claim 1, it is characterised in that：Positive cover passes through injection with positive contact
Fixation forms integral structure.
3. the cylindricality lithium ion battery according to claim 1, it is characterised in that：Also it is cased with outside positive cover, negative cover close
Seal.
4. the cylindricality lithium ion battery according to claim 1, it is characterised in that：The lateral wall tool of positive cover, negative cover
There is external screw thread, the madial wall of straight tube sandwich type element has internal thread.
5. the cylindricality lithium ion battery according to claim 1, it is characterised in that：There is slot rolling, rolling on straight tube sandwich type element
Just being left white or bearing for groove correspondence battery core is left white.
6. the processing technology of the cylindricality lithium ion battery according to claim 1, it is characterised in that：Production process includes
Dispensing, be coated with, cut, winding, fluid injection, group it is vertical, wherein, winding is to retain one end and be left white and be rolled into one end and be coating pole piece
Just, the other end is negative battery core, and the vertical process of group is to fit together battery core, straight tube sandwich type element, positive cover, negative cover, is made just
The positive contact of polar cap is contacted with being just left white for battery core, the negative contact of negative cover is contacted with negative be left white of battery core.
7. the processing technology of cylindricality lithium ion battery according to claim 6, it is characterised in that：The vertical process of group includes：
First battery core is inserted in straight tube sandwich type element, then positive cover, negative cover is respectively pressed at straight tube sandwich type element two ends；Or, first will
Positive cover, negative cover and battery core are packaged, then battery core is filled in straight tube sandwich type element.
8. the processing technology of the cylindricality lithium ion battery according to claim 7, it is characterised in that：The vertical process of group is also wrapped
Button side process is included：Crimping is carried out to the straight tube sandwich type element two ends for having filled in battery core, straight tube sandwich type element two ends is batched and is compressed
Positive cover, negative cover.
9. the processing technology of the cylindricality lithium ion battery according to claim 8, it is characterised in that：Side process is detained to complete
Also include slot rolling process afterwards：Slot rolling, compressing positive cover or negative cover are processed on straight tube sandwich type element.
10. the processing technology of the cylindricality lithium ion battery according to claim 6, it is characterised in that：The vertical process of group is completed
Also include chemical conversion, partial volume, packaging process afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071480.5A CN104659292B (en) | 2015-02-11 | 2015-02-11 | Cylindricality lithium ion battery and its processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071480.5A CN104659292B (en) | 2015-02-11 | 2015-02-11 | Cylindricality lithium ion battery and its processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104659292A CN104659292A (en) | 2015-05-27 |
| CN104659292B true CN104659292B (en) | 2017-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071480.5A Expired - Fee Related CN104659292B (en) | 2015-02-11 | 2015-02-11 | Cylindricality lithium ion battery and its processing technology |
Country Status (1)
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898822B (en) * | 2017-05-05 | 2021-04-09 | 惠州亿纬集能有限公司 | Lithium battery production process and lithium battery |
| CN108649180B (en) * | 2018-05-02 | 2021-08-24 | 北京国能电池科技股份有限公司 | Coating method of lithium ion battery pole piece and lithium ion battery pole piece prepared by coating method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6844110B2 (en) * | 2000-05-24 | 2005-01-18 | Ngk Insulators, Ltd. | Lithium secondary cell and assembly thereof |
| JP2003022791A (en) * | 2001-07-09 | 2003-01-24 | Ngk Insulators Ltd | Lithium secondary battery |
| CN101593849A (en) * | 2009-06-17 | 2009-12-02 | 广州丰江电池新技术股份有限公司 | A kind of lithium battery and manufacture method thereof |
| CN202308190U (en) * | 2011-08-18 | 2012-07-04 | 合肥国轩高科动力能源有限公司 | High-rate lithium ion battery with novel pole lugs |
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- 2015-02-11 CN CN201510071480.5A patent/CN104659292B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104659292A (en) | 2015-05-27 |
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Granted publication date: 20171020 Termination date: 20210211 |