CN109935773A - Lithium ion laminated battery - Google Patents
Lithium ion laminated battery Download PDFInfo
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- CN109935773A CN109935773A CN201811648781.XA CN201811648781A CN109935773A CN 109935773 A CN109935773 A CN 109935773A CN 201811648781 A CN201811648781 A CN 201811648781A CN 109935773 A CN109935773 A CN 109935773A
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- Prior art keywords
- lithium ion
- battery
- laminated battery
- adhesive tape
- positive pole
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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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- Secondary Cells (AREA)
Abstract
A kind of lithium ion laminated battery provided by the invention, comprising: aluminum plastic film capsule, the aluminum plastic film capsule one side edge inside are equipped with positive pole ear and negative lug, and the obverse and reverse of the positive pole ear respectively pastes an insulation protection adhesive tape.Laminated batteries of the invention respectively paste an insulation protection adhesive tape in the obverse and reverse of positive pole ear after punching process, though anode punching process tab position generate metal burr, insulating tape also can guarantee anode not with cathode contact；Security risk is greatly reduced in this way.
Description
Technical field
The present invention relates to lithium ion battery manufacturing fields, and in particular to a kind of lithium ion laminated battery.
Background technique
Currently, lithium ion battery is divided into liquid lithium ionic cell (Liquified Lithium-Ion Battery, abbreviation
For LIB) and polymer Li-ion battery (Polymer Lithium-Ion Battery, referred to as PLB).
Rechargeable lithium ion batteries are most widely used batteries in the modern digital product such as mobile phone, laptop, but
It can not more " fragile " be overcharged, over-discharge (can damage battery or be allowed to scrap) in use.Therefore, there is protection on battery
Component or protection circuit are to prevent expensive cell damage.Lithium ion battery charging requirement is very high, it is ensured that final voltage essence
For degree within ± 1%, major semiconductor devices factory has developed the IC of a variety of lithium ion batteries charging, with guarantee it is safe and reliable,
Rapidly charge.
Mobile phone is essentially all using lithium ion battery.It the use of lithium ion battery is correctly very to battery life is extended
Important.It can be made flat, rectangular, cylinder, rectangle and button according to the requirement of different electronic products, and
It is connected in parallel the battery pack formed by by the series connection of several batteries.The voltage rating of lithium ion battery, because of the variation of material, one
As be 3.7V, LiFePO4 (hereinafter referred to as ferrophosphorus) anode then be 3.2V.Termination charging voltage when fully charged is usually 4.2V,
Ferrophosphorus 3.65V.The termination discharge voltage of lithium ion battery is that (Battery Plant provides operating voltage range or provides 2.75V~3.0V
Discharge voltage is terminated, each parameter is slightly different, generally 3.0V, ferrophosphorus 2.5V).Lower than 2.5V(ferrophosphorus 2.0V) continue to discharge
Referred to as over-discharge, over-discharge have damage to battery.
Cobalt acid lithium types of material is that the lithium ion battery of anode is not suitable for use in being large current discharge, meeting when super-high-current discharges
Discharge time (inside can generate higher temperature and loss of energy) is reduced, and may be caused danger；But iron phosphate lithium positive pole material
Expect lithium battery, can it is even more big with 20C (C be battery capacity, such as C=800mAh, 1C charge rate, that is, charging current is
High current 800mA) carries out charge and discharge, is particularly suitable for electric vehicle and uses.Therefore battery production factory provides maximum discharge current,
It should be less than maximum discharge current in use.Lithium ion battery there are certain requirements temperature, factory give charging temperature range,
Discharge temp range and storage temperature range, over-voltage charging will cause lithium ion battery permanent damage.Lithium ion battery charging
Electric current should be according to the suggestion of battery production factory, and current limit circuit is required to avoid overcurrent (overheat).General common charging
Multiplying power is 0.25C~1C.Battery temperature is detected, often in large current charge to prevent overheat damage battery or generate quick-fried
It is fried.
Lithium ion battery charging is divided into two stages: first constant-current charge, is changed to constant-voltage charge when to close to final voltage.Example
A kind of battery of 800mAh capacity, termination charging voltage are 4.2V.Battery is opened with 800mA (charge rate 1C) constant-current charge
Cell voltage is boosted when the beginning with biggish slope, when cell voltage is close to 4.2V, is changed to 4.2V constant-voltage charge, and electric current gradually drops,
Voltage change is little, when being reduced to 1/10-50C (each factory's setting value is different, does not influence to use) to charging current, it is believed that close to fill
It is full, charging (start timer after the charger to 1/10C having, after terminate to charge after a certain period of time) can be terminated.
For lithium ion battery especially in power battery field, automobile factory requires higher and higher, electricity to the security performance of battery
If it happens the internal short-circuit in pond, it may occur that it smolders, the safety issue of kindling.And most dangerous short-circuit mode is exactly that cathode connects
Touch the empty foil of anode.Existing laminated batteries technical solution causes safety not high there is no to protecting at positive empty foil.
Alumina insulating coating is coated at tab edge when another scheme is coating, and the battery of lamination can generate when punching
Burrs on edges, this security risk be it is very big, can not play the role of protect laminated batteries punching burrs on edges
In the prior art, as the patent of patent document 1:CN201010195881.9, the patent of invention provide a kind of lithium from
Sub- pole piece of laminated battery and preparation method thereof, four sides of lithium ion laminated battery pole piece are collector foil structure, and the present invention is also
A kind of lithium ion laminated battery is disclosed, which is made of above-mentioned lithium ion laminated battery pole piece.The patent of invention does not have
Have and protected at positive empty foil, there are the risks that tab position when laminated batteries punching generates metal burr, cause to pacify
Full property is not high.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of lithium ion laminated batteries, solve existing lithium ion laminated battery not to anode
It is protected at empty foil, there are the risks that tab position when laminated batteries punching generates metal burr, cause safety not high
Defect.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of lithium ion laminated battery, comprising: aluminum plastic film capsule, it is described
Positive pole ear and negative lug are housed, the obverse and reverse of the positive pole ear respectively pastes one inside aluminum plastic film capsule one side edge
Insulation protection adhesive tape.Laminated batteries of the invention respectively paste an insulation in the obverse and reverse of positive pole ear after punching process and protect
Retaining tape, even if anode generates metal burr at the position of the process tab of punching, insulating tape also can guarantee anode not with it is negative
Pole contact；Security risk is greatly reduced in this way.
Preferably, the length of tape is greater than the tab width of positive punching.The present invention is arranged length of tape and is greater than anode
The tab width of punching, reduces the required precision to punching process.
Preferably, the width of the adhesive tape is greater than the width that cathode has more anode.The width that adhesive tape is arranged in the present invention is wanted
Greater than the width that cathode has more anode, the required precision to punching process is reduced.
Preferably, the material of the insulation protection adhesive tape uses PET, PP and PI high temperature insulating material.The present invention uses
PET, PP and PI high temperature insulating material can be denaturalized after avoiding high temperature with high temperature resistant, and same electrolyte resistance corrosion improves
Life of product.
Preferably, the aluminum plastic film capsule is provided with battery electrolyte.
(3) beneficial effect
A kind of lithium ion laminated battery provided by the invention, has the advantage that
1, laminated batteries of the invention respectively paste an insulation protection adhesive tape in the obverse and reverse of positive pole ear after punching process,
Even if anode punching process tab position generate metal burr, insulating tape also can guarantee anode not with cathode contact；
Security risk is greatly reduced in this way.
Detailed description of the invention
Fig. 1 is the structure chart of lithium ion laminated battery of the invention.
1, aluminum plastic film capsule, 2, positive pole ear, 3, negative lug, 4, insulation protection adhesive tape.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term " on ",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or
Imply relative importance.In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is connected directly, it can also be indirectly connected through an intermediary.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention with concrete condition.
PI in the present invention is writing a Chinese character in simplified form for Polyimide, and Chinese is polyimides；PET is Poly (ethylene
Writing a Chinese character in simplified form terephthalate), Chinese is that polyethylene terephthalate PP is writing a Chinese character in simplified form for Polypropylene,
Chinese is polypropylene.
The arrow of Fig. 1 is the inflow direction of electrolyte.
Embodiment 1
As shown in Figure 1, a kind of lithium ion laminated battery provided by the invention, comprising: aluminum plastic film capsule 1, the aluminum plastic film capsule
Positive pole ear 2 and negative lug 3 are housed, the obverse and reverse of the positive pole ear respectively pastes an insulation protection inside one side edge
Adhesive tape 4.The aluminum plastic film capsule is provided with battery electrolyte.Laminated batteries of the invention are after punching process in positive pole ear
Obverse and reverse respectively pastes an insulation protection adhesive tape, even if anode generates metal burr at the position of the process tab of punching, absolutely
Edge adhesive tape also can guarantee anode not with cathode contact；Security risk is greatly reduced in this way.
The length of tape is greater than the tab width of positive punching.The pole that length of tape is greater than positive punching is arranged in the present invention
Ear width reduces the required precision to punching process.The width of the adhesive tape is greater than the width that cathode has more anode.This
The width of invention setting adhesive tape is greater than the width that cathode has more anode, reduces the required precision to punching process.It is described exhausted
The material of edge protective glue band uses PET, PP and PI high temperature insulating material.The present invention uses PET, PP and PI high temperature insulating material,
It can be denaturalized after avoiding high temperature with high temperature resistant, and same electrolyte resistance corrosion improves life of product.
In the present embodiment, even if anode generates metal burr at the position of the process tab of punching, due to insulation protection glue
Band is separated by positive electrode and negative electrode, greatly reduction security risk.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type etc. are all can be
Variation, all equivalents and improvement carried out based on the technical solution of the present invention should not be excluded of the invention
Except protection scope.
Claims (5)
1. a kind of lithium ion laminated battery characterized by comprising
Aluminum plastic film capsule, the aluminum plastic film capsule one side edge inside are equipped with positive pole ear and negative lug, the positive pole ear
Obverse and reverse respectively paste an insulation protection adhesive tape.
2. lithium ion laminated battery as described in claim 1, which is characterized in that the length of tape is greater than the pole of positive punching
Ear width.
3. the preparation method of lithium ion laminated battery as described in claim 1, which is characterized in that the width of the adhesive tape is big
The width of anode is had more in cathode.
4. lithium ion laminated battery as claimed in claim 4, which is characterized in that the material of the insulation protection adhesive tape uses
PET, PP and PI high temperature insulating material.
5. lithium ion laminated battery as described in claim 1, which is characterized in that the aluminum plastic film capsule is provided with battery electrolysis
Liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648781.XA CN109935773A (en) | 2018-12-30 | 2018-12-30 | Lithium ion laminated battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648781.XA CN109935773A (en) | 2018-12-30 | 2018-12-30 | Lithium ion laminated battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109935773A true CN109935773A (en) | 2019-06-25 |
Family
ID=66984896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811648781.XA Pending CN109935773A (en) | 2018-12-30 | 2018-12-30 | Lithium ion laminated battery |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003068271A (en) * | 2001-06-13 | 2003-03-07 | Matsushita Electric Ind Co Ltd | Lithium secondary battery and manufacturing method of positive plate used for lithium secondary battery |
| JP4380201B2 (en) * | 2003-04-09 | 2009-12-09 | パナソニック株式会社 | Method for producing non-aqueous electrolyte secondary battery |
| CN201956416U (en) * | 2010-12-16 | 2011-08-31 | 天津力神电池股份有限公司 | Positive pole piece of lithium ion battery |
| CN102569727A (en) * | 2011-12-29 | 2012-07-11 | 天津力神电池股份有限公司 | Manufacturing method of polymer lithium ion battery pole pack |
| CN204966612U (en) * | 2015-07-30 | 2016-01-13 | 万向A一二三系统有限公司 | Soft package lithium ion battery lamination formula electricity core structure |
| CN105244470A (en) * | 2015-09-11 | 2016-01-13 | 合肥国轩高科动力能源有限公司 | Positive plate of high-safety lithium-ion laminated battery and preparation method of positive plate |
| CN107749457A (en) * | 2016-11-18 | 2018-03-02 | 万向二三股份公司 | A kind of lithium ion battery of the ceramic coating containing positive pole |
| CN207947341U (en) * | 2018-03-27 | 2018-10-09 | 横店集团东磁股份有限公司 | A kind of anode pole piece with lug and the lithium ion battery comprising the anode pole piece |
| CN109103354A (en) * | 2018-07-11 | 2018-12-28 | 惠州基安比新能源有限公司 | A kind of soft-package battery and preparation method thereof |
-
2018
- 2018-12-30 CN CN201811648781.XA patent/CN109935773A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003068271A (en) * | 2001-06-13 | 2003-03-07 | Matsushita Electric Ind Co Ltd | Lithium secondary battery and manufacturing method of positive plate used for lithium secondary battery |
| JP4380201B2 (en) * | 2003-04-09 | 2009-12-09 | パナソニック株式会社 | Method for producing non-aqueous electrolyte secondary battery |
| CN201956416U (en) * | 2010-12-16 | 2011-08-31 | 天津力神电池股份有限公司 | Positive pole piece of lithium ion battery |
| CN102569727A (en) * | 2011-12-29 | 2012-07-11 | 天津力神电池股份有限公司 | Manufacturing method of polymer lithium ion battery pole pack |
| CN204966612U (en) * | 2015-07-30 | 2016-01-13 | 万向A一二三系统有限公司 | Soft package lithium ion battery lamination formula electricity core structure |
| CN105244470A (en) * | 2015-09-11 | 2016-01-13 | 合肥国轩高科动力能源有限公司 | Positive plate of high-safety lithium-ion laminated battery and preparation method of positive plate |
| CN107749457A (en) * | 2016-11-18 | 2018-03-02 | 万向二三股份公司 | A kind of lithium ion battery of the ceramic coating containing positive pole |
| CN207947341U (en) * | 2018-03-27 | 2018-10-09 | 横店集团东磁股份有限公司 | A kind of anode pole piece with lug and the lithium ion battery comprising the anode pole piece |
| CN109103354A (en) * | 2018-07-11 | 2018-12-28 | 惠州基安比新能源有限公司 | A kind of soft-package battery and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211111 Address after: 311215 No. 855, Jianshe Second Road, economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Applicant after: Wanxiang A123 Co.,Ltd. Address before: 311215 No. 855, Jianshe Second Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Applicant before: Wanxiang A123 Co.,Ltd. Applicant before: WANXIANG GROUP Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190625 |
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| RJ01 | Rejection of invention patent application after publication |