CN101958430B - Lithium ion battery core with continuous lamination and lithium ion battery - Google Patents
Lithium ion battery core with continuous lamination and lithium ion battery Download PDFInfo
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- CN101958430B CN101958430B CN2010105028715A CN201010502871A CN101958430B CN 101958430 B CN101958430 B CN 101958430B CN 2010105028715 A CN2010105028715 A CN 2010105028715A CN 201010502871 A CN201010502871 A CN 201010502871A CN 101958430 B CN101958430 B CN 101958430B
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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 invention relates to a lithium ion battery core with continuous lamination and a lithium ion battery, belonging to a storage battery and aiming at providing a lithium ion battery with sample structure and difficultly shed active substances, as well as low production cost. The lithium ion battery core with continuous lamination comprises a positive plate, a negative plate and a diaphragm, wherein the positive plate comprises a belted positive plate and a monolithic positive plate, the negative plate comprises a belted negative plate and a monolithic negative plate, the diaphragm comprises a positive side-belted diaphragm, a middle belted diaphragm and a negative side-belted diaphragm, the positive side-belted diaphragm, the belted positive plate, the middle belted diaphragm, the belted negative plate and the negative side-belted diaphragm sequentially laminated and connected along a direction vertical to the surfaces thereof to form a main core body, the main core body is continuously bent into a Z shape along the length direction, the monolithic positive plate is inserted in adjacent bent parts of the positive side-belted diaphragm, the monolithic positive plate is inserted in the adjacent bent parts of the negative side-belted diaphragm, and parts in which the positive plate and the negative plate are in contact with the diaphragm are coated with the active substances.
Description
Technical field
The present invention relates to a kind of storage battery, particularly relate to a kind of core of lithium ion cell of continuous lamination and comprise the lithium ion battery of this battery.
Background technology
Chemical cell is the device that chemical energy is directly changed into electric energy, and chemical cell mainly comprises the lug of housing, the electrolyte solution in the housing, positive, negative electrode plate and connecting electrode sheet as encapsulant.Wherein, existing lithium ion battery is a kind of of chemical cell, is used widely at present.Since the nineties in last century, Sony realized that successfully lithium ion chargeable battery is commercially produced, main production was the lithium ion chargeable battery of low capacity on the market, and its capacity is less than 2.3 ampere-hours.Along with the development of society, people are more and more higher to the requirement of the mobile energy, and for example: electric bicycle, electric automobile reach tens ampere-hours, hundreds of ampere-hour even higher to the requirement of battery capacity.In order to obtain higher battery capacity, the battery in the lithium ion battery of prior art adopts laminated structure, and the laminated structure battery comprises the anode pole piece of monolithic and cross layered cathode pole piece with it, the employing barrier film separation of anode pole piece and cathode pole piece.And in the production process of die-cut monolithic pole piece, very easily cause the active material on pole piece surface to come off, and make the burr at pole piece edge more, production technology is more loaded down with trivial details, and efficient is lower.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple in structure, active material difficult drop-off, the core of lithium ion cell of the continuous lamination that production cost is low and lithium ion battery.
The core of lithium ion cell of the continuous lamination of the present invention, comprise positive plate, negative plate and barrier film, wherein said positive plate comprises belt positive plate and monolithic positive plate, described negative plate comprises belt negative plate and monolithic negative plate, described barrier film comprises side of the positive electrode belt barrier film, middle belt barrier film and negative side belt barrier film, described side of the positive electrode belt barrier film, the belt positive plate, middle belt barrier film, belt negative plate and negative side belt barrier film are along perpendicular to its surperficial direction successively stacked main core body that connects and composes, described main core body is along the continuous Z-type bending of its length direction, the adjacent part of described side of the positive electrode belt barrier film bending is inserted with the monolithic negative plate, the adjacent part of described negative side belt barrier film bending is inserted with the monolithic positive plate, and the contacted part of described positive plate and negative plate and barrier film is coated with active material.
The core of lithium ion cell of the continuous lamination of the present invention, wherein said belt positive plate and monolithic positive plate extend the positive pole ear linkage section along the Width of main core body to a side, and described belt negative plate and monolithic negative plate extend the negative lug linkage section along the Width of main core body to opposite side.
The core of lithium ion cell of the continuous lamination of the present invention offers some through holes on wherein said positive plate and the negative plate.
The core of lithium ion cell of the continuous lamination of the present invention, the aperture of wherein said through hole are d, and 0.2mm＜d＜1.5mm, the gross area of through hole account for 30%～45% of positive plate and negative plate surface area.
Lithium ion battery of the present invention, wherein said battery, lug and shell, wherein said battery is the core of lithium ion cell of above-mentioned continuous lamination, described lug comprises positive pole ear and negative lug, described battery setting in the enclosure, described positive pole ear and negative lug are arranged on respectively the two ends of battery along the Width of battery, described positive plate is fixedly connected with the inner of positive pole ear, described negative plate is fixedly connected with the inner of negative lug, the outer end of described positive pole ear and negative lug passes from the two ends of shell, is provided with the insulation adhesive linkage between positive pole ear and negative lug and the shell.
Lithium ion battery of the present invention, the inner of wherein said positive pole ear and negative lug are U-shaped, and described positive pole ear linkage section and negative lug linkage section are separately positioned in the U-shaped groove of positive pole ear and negative lug the inner.
Lithium ion battery of the present invention, wherein said insulation adhesive linkage is PUR.
Lithium ion battery of the present invention, wherein said shell are plastic-aluminum shell, plastic casing or steel aluminum hull.
The core of lithium ion cell of the continuous lamination of the present invention and lithium ion battery difference from prior art are that the core of lithium ion cell of the continuous lamination of the present invention adopts the belt positive and negative plate and the monolithic positive and negative plate that interts therein of continuous Z-type bending, make and saved 2/3 the man hour of labour that continuous utmost point band is die-cut into the monolithic pole piece in the production process, the production efficiency that greatly promotes, and the active material of having avoided applying on the pole piece comes off in die-cut process, has reduced the probability that self discharge appears in battery.
Positive and negative electrode lug in the lithium ion battery of the present invention is drawn from the two ends of battery respectively, has increased the conductive area between lug and the pole piece, has improved the charging and discharging currents of battery; Simultaneously, the belt pole piece is connected mode in parallel directly to be connected with lug with the monolithic pole piece, reduced the internal resistance of battery, has reduced the fever phenomenon of battery in charge and discharge process; Offer through hole at pole piece, can increase the adhesive force of active material and pole piece, prevent that active material from coming off.
Be described further below in conjunction with core of lithium ion cell and the lithium ion battery of accompanying drawing to continuous lamination of the present invention.
Description of drawings
Fig. 1 is the front view of the core of lithium ion cell of the continuous lamination of the present invention;
Fig. 2 is the stereogram (subsidiary lug) of the core of lithium ion cell of the continuous lamination of the present invention;
Fig. 3 is the front view of lithium ion battery of the present invention;
Fig. 4 is A-A direction cutaway view among Fig. 3;
Fig. 5 is the partial enlarged drawing at I place among Fig. 4.
Embodiment
As shown in Figure 1, the core of lithium ion cell of the continuous lamination of the present invention comprises positive plate, negative plate and barrier film, positive plate comprises belt positive plate 1 and monolithic positive plate 2, negative plate comprises belt negative plate 3 and monolithic negative plate 4, barrier film comprises side of the positive electrode belt barrier film 5, middle belt barrier film 6 and negative side belt barrier film 7, side of the positive electrode belt barrier film 5, belt positive plate 1, middle belt barrier film 6, belt negative plate 3 and negative side belt barrier film 7 are along perpendicular to its surperficial direction successively stacked bonding formation main core body, main core body is along the continuous Z-type bending of its length direction, the adjacent part of side of the positive electrode belt barrier film 5 bendings is inserted with monolithic negative plate 4, the adjacent part of negative side belt barrier film 7 bendings is inserted with monolithic positive plate 2, and the contacted part of positive plate and negative plate and barrier film is coated with active material.Offer some through hole (not shown)s on positive plate and the negative plate, the aperture of through hole is d, and 0.2mm＜d＜1.5mm, the gross area of through hole account for 30%～45% of positive plate and negative plate surface area.
As shown in Figure 2, belt positive plate 1 and monolithic positive plate 2 extend positive pole ear linkage section 8 along the Width of main core body to a side, and belt negative plate 3 and monolithic negative plate 4 extend negative lug linkage section 9 along the Width of main core body to opposite side.
As shown in Figure 3 and Figure 4, lithium ion battery of the present invention comprises battery, lug and shell 10, shell 10 is the plastic-aluminum shell, plastic casing or steel aluminum hull, battery is the core of lithium ion cell of continuous lamination, lug comprises the positive pole ear 11 close with the battery width and negative lug 12, battery is arranged in the shell 10, positive pole ear 11 and negative lug 12 are arranged on respectively the two ends of battery along the Width of battery, in conjunction with shown in Figure 5, the inner of positive pole ear 11 and negative lug 12 is U-shaped, positive pole ear linkage section 8 and negative lug linkage section 9 are welded on respectively in the U-shaped groove of positive pole ear 11 and negative lug 12 the inners, the outer end of positive pole ear 11 and negative lug 12 passes from the two ends of shell 10, be provided with insulation adhesive linkage 13 between positive pole ear 11 and negative lug 12 and the shell 10, insulation adhesive linkage 13 is PUR.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection range of claims of the present invention.
Claims (8)
1. the core of lithium ion cell of a continuous lamination, comprise positive plate, negative plate and barrier film, it is characterized in that: described positive plate comprises belt positive plate (1) and monolithic positive plate (2), described negative plate comprises belt negative plate (3) and monolithic negative plate (4), described barrier film comprises side of the positive electrode belt barrier film (5), middle belt barrier film (6) and negative side belt barrier film (7), described side of the positive electrode belt barrier film (5), belt positive plate (1), middle belt barrier film (6), belt negative plate (3) and negative side belt barrier film (7) are along perpendicular to its surperficial direction successively stacked main core body that connects and composes, described main core body is along the continuous Z-type bending of its length direction, the adjacent part of described side of the positive electrode belt barrier film (5) bending is inserted with monolithic negative plate (4), the adjacent part of described negative side belt barrier film (7) bending is inserted with monolithic positive plate (2), and the contacted part of described positive plate and negative plate and barrier film is coated with active material.
2. the core of lithium ion cell of continuous lamination according to claim 1, it is characterized in that: described belt positive plate (1) and monolithic positive plate (2) extend positive pole ear linkage section (8) along the Width of main core body to a side, and described belt negative plate (3) and monolithic negative plate (4) extend negative lug linkage section (9) along the Width of main core body to opposite side.
3. the core of lithium ion cell of continuous lamination according to claim 1 and 2 is characterized in that: offer some through holes on described positive plate and the negative plate.
4. the core of lithium ion cell of continuous lamination according to claim 3, it is characterized in that: the aperture of described through hole is d, 0.2mm＜d＜1.5mm, the gross area of through hole account for 30%～45% of positive plate and negative plate surface area.
5. lithium ion battery, comprise battery, lug and shell (10), it is characterized in that: described battery is the core of lithium ion cell of continuous lamination as claimed in claim 2, described lug comprises positive pole ear (11) and negative lug (12), described battery is arranged in the shell (10), described positive pole ear (11) and negative lug (12) are arranged on respectively the two ends of battery along the Width of battery, described positive plate is fixedly connected with the inner of positive pole ear (11), described negative plate is fixedly connected with the inner of negative lug (12), the outer end of described positive pole ear (11) and negative lug (12) passes from the two ends of shell (10), is provided with insulation adhesive linkage (13) between positive pole ear (11) and negative lug (12) and the shell (10).
6. lithium ion battery according to claim 5, it is characterized in that: the inner of described positive pole ear (11) and negative lug (12) is U-shaped, and described positive pole ear linkage section (8) and negative lug linkage section (9) are separately positioned in the U-shaped groove of positive pole ear (11) and negative lug (12) the inner.
7. lithium ion battery according to claim 6, it is characterized in that: described insulation adhesive linkage (13) is PUR.
8. lithium ion battery according to claim 7, it is characterized in that: described shell (10) is plastic-aluminum shell, plastic casing or steel aluminum hull.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105028715A CN101958430B (en) | 2010-10-11 | 2010-10-11 | Lithium ion battery core with continuous lamination and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105028715A CN101958430B (en) | 2010-10-11 | 2010-10-11 | Lithium ion battery core with continuous lamination and lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101958430A CN101958430A (en) | 2011-01-26 |
| CN101958430B true CN101958430B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105028715A Expired - Fee Related CN101958430B (en) | 2010-10-11 | 2010-10-11 | Lithium ion battery core with continuous lamination and lithium ion battery |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579683A (en) * | 2012-07-27 | 2014-02-12 | 华为技术有限公司 | Lithium ion battery and battery core thereof |
| CN104051793B (en) * | 2014-07-03 | 2016-01-06 | 宁德新能源科技有限公司 | The preparation method of laminated cell |
| CN106252732A (en) * | 2016-08-17 | 2016-12-21 | 吉安市优特利科技有限公司 | The manufacture method of lithium-ion-power cell |
| CN108258327A (en) * | 2018-01-19 | 2018-07-06 | 福建荣华科技有限公司 | Laminated lithium ion battery core and its assemble method and the laminated lithium ion battery for including laminated lithium ion battery core |
| CN113707843B (en) * | 2021-09-29 | 2023-05-16 | 珠海冠宇电池股份有限公司 | Cell and electrochemical device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2088118A (en) * | 1980-11-21 | 1982-06-03 | Oldham Batteries Ltd | Improvements in or relating to the manufacture of electric batteries |
| US5498489A (en) * | 1995-04-14 | 1996-03-12 | Dasgupta; Sankar | Rechargeable non-aqueous lithium battery having stacked electrochemical cells |
| CN2713657Y (en) * | 2004-07-20 | 2005-07-27 | 刘立君 | Lithium ion power battery |
| JP5458464B2 (en) * | 2006-08-10 | 2014-04-02 | 日産自動車株式会社 | Flat battery |
| TWM352782U (en) * | 2008-07-04 | 2009-03-11 | Exa Energy Technology Co Ltd | Foldable type secondary cell |
| CN101630757A (en) * | 2008-07-14 | 2010-01-20 | Tcl集团股份有限公司 | Core structure of lithium ion battery |
| CN101783420A (en) * | 2009-05-05 | 2010-07-21 | 深圳市雄韬电源科技有限公司 | Method for manufacturing lithium ion battery lamination |
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| CN101958430A (en) | 2011-01-26 |
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