CN102637895A - Flexible-package lithium ion battery and method for improving electric capacity of battery - Google Patents
Flexible-package lithium ion battery and method for improving electric capacity of battery Download PDFInfo
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- CN102637895A CN102637895A CN2012101030306A CN201210103030A CN102637895A CN 102637895 A CN102637895 A CN 102637895A CN 2012101030306 A CN2012101030306 A CN 2012101030306A CN 201210103030 A CN201210103030 A CN 201210103030A CN 102637895 A CN102637895 A CN 102637895A
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- battery
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- ion battery
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to the technical field of lithium ion batteries and particularly relates to a flexible-package lithium ion battery and a method for improving electric capacity of the battery. The flexible-package lithium ion battery comprises a composite-membrane battery case made from a hot-melt macromolecule membrane and metal foil, and two sealed spaces are formed in the composite-membrane battery case through heat sealing, wherein a battery cell is placed in one sealed space, the other sealed space is positioned on the upper side surface of the battery cell and forms an air bag positioned upwards, and electrolyte is injected into the air bag which is communicated with the sealed space in which the battery cell is placed. According to the flexible-package lithium ion battery with the structure, under the conditions of not changing the overall dimension of the battery and the interior of the battery cell, the electric capacity can be maximized, the capacity attenuation is slower, and the cycle performance is better.
Description
Technical field
The present invention relates to technical field of lithium ion, relate in particular to flexible packing lithium ion battery and improve the method for its capacitance.
Background technology
Advantages such as Soft Roll lithium ion battery tool is high with voltage, electricity capacity big, long circulation life, memory-less effect, light weight, working range are wide.Existing market is increasingly high to the performance and the capacity requirement of lithium ion battery; Not only to requiring battery to have higher initial capacity; And require battery in the repeated charge process, to have capability retention preferably, and show good performance, have long useful life.The capacity of Soft Roll lithium ion battery depends on the size of raw-material selection and cell body inner space utilance, makes the higher battery of capacity density like need, under the constant situation of battery overall dimension; Thickness space is less than normal relatively, must be in technological design to the battery THICKNESS CONTROL in littler scope, and influence thus and make the inner space volume of entire cell less than normal; Reservoir quantity is on the low side; Cause the Soft Roll capacity of lithium ion battery on the low side, capacity attenuation is fast, and cycle performance is poor.
Summary of the invention
The objective of the invention is to a kind of flexible packing lithium ion battery to be provided and improve the method for its capacitance, can make effectively that capacitance maximization, capacity attenuation are slower, cycle performance is better to the deficiency of prior art.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: flexible packing lithium ion battery; It comprises battery, and it also comprises the compound film battery shell of being processed by hot melt macromolecule membrane and metal forming, and the compound film battery shell forms two seal cavities through heat-sealing; One of them seal cavity is used to place battery; The another one seal cavity is positioned at the battery upper side and forms the air bag upwards placed, is injected with electrolyte in the air bag, and said air bag is connected with the seal cavity that is used to place battery.
Said air bag and being used to is placed between the seal cavity of battery and is offered the electrolyte stream through hole.
Said battery is provided with the positive and negative electrode that protrudes in the compound film battery shell.
Improve the method for flexible packing lithium ion battery capacitance, adopt hot melt macromolecule membrane and metal forming to process the compound film battery shell, the compound film battery shell forms two seal cavities that communicate through heat-sealing; Battery is positioned over one of them seal cavity, and the another one seal cavity is positioned at the battery upper side and forms the air bag upwards placed; In air bag, inject the electrolyte of capacity; In the flexible packing lithium ion battery formation process; The inner electrolyte of the continuous consuming cells of battery; And produce gas by battery corresponding seal cavity upwards enter air bag, the electrolyte in the air bag flows into battery inside downwards simultaneously, makes the inner electrolyte that guarantees to have capacity of battery; After whole process changes into completion, seal and cut air bag according to the battery apparent size again.
Before flexible packing lithium ion battery changed into, the inner electrolyte content that injects of the seal cavity that battery is placed was 60% ~ 90% of the required electrolyte total amount of flexible packing lithium ion battery; After flexible packing lithium ion battery changed into, the seal cavity that battery is placed replenished electrolyte to 100% by air bag.
Beneficial effect of the present invention is: flexible packing lithium ion battery of the present invention; Comprise the compound film battery shell of processing by hot melt macromolecule membrane and metal forming; The compound film battery shell forms two seal cavities through heat-sealing, and one of them seal cavity is used to place battery, and the another one seal cavity is positioned at the battery upper side and forms the air bag upwards placed; Be injected with electrolyte in the air bag, said air bag is connected with the seal cavity that is used to place battery.Adopt the flexible packing lithium ion battery of said structure; Except the raw-material selection of its compound film battery shell can effectively improve the capacitance; Also through increasing the structure of air bag; In the flexible packing lithium ion battery formation process, constantly replenish electrolyte to inside battery, make inside battery guarantee to have the electrolyte of capacity, capacitance maximization, capacity attenuation are slower, cycle performance is better thereby under the inner constant situation of battery overall dimension and battery, make.
The method of raising flexible packing lithium ion battery capacitance of the present invention, it adopts hot melt macromolecule membrane and metal forming to process the compound film battery shell, and the compound film battery shell forms two seal cavities that communicate through heat-sealing; Battery is positioned over one of them seal cavity, and the another one seal cavity is positioned at the battery upper side and forms the air bag upwards placed; In air bag, inject the electrolyte of capacity; In the flexible packing lithium ion battery formation process; The inner electrolyte of the continuous consuming cells of battery; And produce gas by battery corresponding seal cavity upwards enter air bag, the electrolyte in the air bag flows into inside battery downwards simultaneously, makes inside battery guarantee to have the electrolyte of capacity; After whole process changes into completion, seal and cut air bag according to the battery apparent size again.Adopt said method, can make under the inner constant situation of battery overall dimension and battery that capacitance maximization, capacity attenuation are slower, cycle performance is better.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described: as shown in Figure 1; Flexible packing lithium ion battery according to the invention; Its structure is: flexible packing lithium ion battery, and the compound film battery shell 1 that it comprises battery 3, is processed by hot melt macromolecule membrane and metal forming, compound film battery shell 1 forms two seal cavities through heat-sealing; One of them seal cavity is used to place battery 3; The another one seal cavity is positioned at battery 3 upper sides and forms the air bag 2 upwards placed, is injected with electrolyte in the air bag 2, and said air bag 2 is connected with the seal cavity that is used to place battery 3.Further; Said air bag 2 and being used to is placed between the seal cavity of battery 3 and is offered the electrolyte stream through hole; The quantity of electrolyte stream through hole and aperture can be decided according to the speed of the 3 consuming cells electrolyte inside of battery in the formation process; Purpose is to make the electrolyte in the air bag 2 in time flow into battery 3 inside downwards, makes the battery 3 inner electrolyte that guarantee to have capacity.Further, said battery 3 is provided with the positive and negative electrode 4 that protrudes in compound film battery shell 1, and compound film battery shell 1 is provided with hermetically-sealed construction in the relevant position of positive and negative electrode 4.
Adopt the flexible packing lithium ion battery of said structure, the compound film battery shell 1 that its shell adopts hot melt macromolecule membrane and metal forming to process is made, and the raw-material selection of this compound film battery shell 1 can effectively improve capacitance.Pass through to increase the size of compound film battery shell 1 during heat-sealing; The shell sizes of this increase is positioned at battery 3 upper sides and forms the said air bag of upwards placing 2; Inject the capacity electrolyte of design in the air bag of processing 2; And make air bag 2 and battery 3 internal communication, and guarantee sealing around making compound film battery shell 1.When flexible packing lithium ion battery when changing into, inside battery produces gas and upwards is disposed to air bag 2, the electrolyte in the air bag 2 flow into inside batteries and replenish because of changing into the electrolyte that consumes, and are that the flow direction of electrolyte is illustrated when changing into like label A indication arrow among Fig. 1.Limited space system causes the electrolyte total amount not enough in the conventional high-capacity battery shell, and after increasing air bag 2, utilizes inside battery to consume the space that increases because of electrolyte content changes into, and the electrolyte in the air bag 2 in time flows into the electrolyte of capacity to inside battery.Can increase the electrolyte total amount of finally staying in the battery like this.Thereby obtain the Soft Roll lithium rechargeable battery that capacity attenuation is slow, cycle performance is outstanding.This through increasing the structure of air bag 2; In the flexible packing lithium ion battery formation process, constantly replenish electrolyte to inside battery, make inside battery guarantee to have the electrolyte of capacity, capacitance maximization, capacity attenuation are slower, cycle performance is better thereby under the constant situation of battery case and battery 3, make; Also can further promote the cycle life of flexible packing lithium ion battery; Guarantee product qualified rate, reduce cost, raise the efficiency.
The method of raising flexible packing lithium ion battery capacitance according to the invention adopts hot melt macromolecule membrane and metal forming to process compound film battery shell 1, and compound film battery shell 1 forms two seal cavities that communicate through heat-sealing; Battery 3 is positioned over one of them seal cavity, and the another one seal cavity is positioned at battery 3 upper sides and forms the air bag 2 upwards placed; In air bag 2, inject the electrolyte of capacity; In the flexible packing lithium ion battery formation process; The inner electrolyte of battery 3 continuous consuming cells; And produce gas by battery 3 corresponding seal cavity upwards enter air bag 2; Electrolyte in the air bag 2 flows into battery 3 inside downwards simultaneously, makes inside battery guarantee to have the electrolyte of capacity; After whole process changes into completion, seal and cut air bag 2 according to battery 3 apparent sizes again.Adopt said method, can make under the inner constant situation of battery overall dimension and battery 3 that capacitance maximization, capacity attenuation are slower, cycle performance is better.
Further, the method for said raising flexible packing lithium ion battery capacitance, before flexible packing lithium ion battery changed into, the inner electrolyte content that injects of the seal cavity that battery 3 is placed was 60% ~ 90% of the required electrolyte total amount of flexible packing lithium ion battery; After flexible packing lithium ion battery changed into, the seal cavity that battery 3 is placed replenished electrolyte to 100% by air bag 2, thereby further promoted the cycle life of lithium ion battery, guaranteed product qualified rate, reduced cost, and raised the efficiency.
The above only is a preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, includes in patent claim of the present invention.
Claims (5)
1. flexible packing lithium ion battery; It comprises battery (3); It is characterized in that: it also comprises the compound film battery shell of being processed by hot melt macromolecule membrane and metal forming (1); Compound film battery shell (1) forms two seal cavities through heat-sealing, and one of them seal cavity is used to place battery (3), and the another one seal cavity is positioned at battery (3) upper side and forms the air bag (2) upwards placed; Air bag is injected with electrolyte in (2), and said air bag (2) is connected with the seal cavity that is used to place battery (3).
2. flexible packing lithium ion battery according to claim 1 is characterized in that: said air bag (2) and being used to is placed between the seal cavity of battery (3) and is offered the electrolyte stream through hole.
3. flexible packing lithium ion battery according to claim 2 is characterized in that: said battery (3) is provided with the positive and negative electrode (4) that protrudes in compound film battery shell (1).
4. improve the method for flexible packing lithium ion battery capacitance, it is characterized in that: adopt hot melt macromolecule membrane and metal forming to process compound film battery shell (1), compound film battery shell (1) forms two seal cavities that communicate through heat-sealing; Battery (3) is positioned over one of them seal cavity, and the another one seal cavity is positioned at battery (3) upper side and forms the air bag (2) upwards placed; In air bag (2), inject the electrolyte of capacity; In the flexible packing lithium ion battery formation process; Battery (3) is the inner electrolyte of consuming cells constantly; And produce gas by battery (3) corresponding seal cavity upwards enter air bag (2); Electrolyte in the air bag (2) flows into battery (3) inside downwards simultaneously, makes the inner assurance of battery (3) that the electrolyte of capacity arranged; After whole process changes into completion, seal and cut air bag (2) according to battery (3) apparent size again.
5. the method for raising flexible packing lithium ion battery capacitance according to claim 4; It is characterized in that: before flexible packing lithium ion battery changed into, the inner electrolyte content that injects of the seal cavity that battery (3) is placed was 60% ~ 90% of the required electrolyte total amount of flexible packing lithium ion battery; After flexible packing lithium ion battery changed into, the seal cavity that battery (3) is placed replenished electrolyte to 100% by air bag (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101030306A CN102637895A (en) | 2012-04-10 | 2012-04-10 | Flexible-package lithium ion battery and method for improving electric capacity of battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101030306A CN102637895A (en) | 2012-04-10 | 2012-04-10 | Flexible-package lithium ion battery and method for improving electric capacity of battery |
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| CN102637895A true CN102637895A (en) | 2012-08-15 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811711A (en) * | 2014-02-27 | 2014-05-21 | 深圳市格瑞普电池有限公司 | Lithium ion battery with capsule |
| CN103840217A (en) * | 2014-03-24 | 2014-06-04 | 四川剑兴锂电池有限公司 | Cylindrical flexible package lithium titanate battery |
| CN103872384A (en) * | 2014-04-09 | 2014-06-18 | 深圳市格瑞普电池有限公司 | Preparation method of laminated lithium ion battery |
| CN105742714A (en) * | 2014-12-26 | 2016-07-06 | 昭和电工包装株式会社 | Method for manufacturing battery |
| CN106602134A (en) * | 2016-12-29 | 2017-04-26 | 中聚（杭州）新能源科技有限公司 | High-electrolyte-content lithium ion battery and manufacturing method therefor |
| CN108390092A (en) * | 2018-01-30 | 2018-08-10 | 南京红太阳新能源有限公司 | A kind of liquid soft bag lithium ionic cell and its packaging technology |
| CN111406327A (en) * | 2018-11-02 | 2020-07-10 | 株式会社Lg化学 | Pouch type secondary battery having electrolyte solution replenishing recess formed therein |
| WO2021125591A1 (en) * | 2019-12-19 | 2021-06-24 | 주식회사 엘지에너지솔루션 | Secondary battery and method for manufacturing same |
| CN114388914A (en) * | 2020-10-05 | 2022-04-22 | 大众汽车股份公司 | Method for forming battery cells |
| CN115172952A (en) * | 2022-09-07 | 2022-10-11 | 楚能新能源股份有限公司 | Air bag structure of soft-package battery cell and packaging method of soft-package battery cell |
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| US20030194607A1 (en) * | 2002-04-10 | 2003-10-16 | Sui-Yang Huang | Polymer-gel lithium ion battery |
| CN101118976A (en) * | 2007-08-14 | 2008-02-06 | 深圳市邦凯电子有限公司 | Method for manufacturing soft packed lithium ion battery |
| CN101877421A (en) * | 2009-04-29 | 2010-11-03 | 深圳市比克电池有限公司 | Battery and manufacturing method thereof |
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| CN102324556A (en) * | 2011-09-14 | 2012-01-18 | 东莞市易升电池有限公司 | Secondary lithium ion battery and electric capacity improving method thereof |
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2012
- 2012-04-10 CN CN2012101030306A patent/CN102637895A/en active Pending
Patent Citations (5)
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| US20030194607A1 (en) * | 2002-04-10 | 2003-10-16 | Sui-Yang Huang | Polymer-gel lithium ion battery |
| CN101118976A (en) * | 2007-08-14 | 2008-02-06 | 深圳市邦凯电子有限公司 | Method for manufacturing soft packed lithium ion battery |
| CN101877421A (en) * | 2009-04-29 | 2010-11-03 | 深圳市比克电池有限公司 | Battery and manufacturing method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811711A (en) * | 2014-02-27 | 2014-05-21 | 深圳市格瑞普电池有限公司 | Lithium ion battery with capsule |
| CN103840217A (en) * | 2014-03-24 | 2014-06-04 | 四川剑兴锂电池有限公司 | Cylindrical flexible package lithium titanate battery |
| CN103840217B (en) * | 2014-03-24 | 2016-08-31 | 四川剑兴锂电池有限公司 | A kind of cylindrical flexible package lithium titanate battery |
| CN103872384A (en) * | 2014-04-09 | 2014-06-18 | 深圳市格瑞普电池有限公司 | Preparation method of laminated lithium ion battery |
| CN105742714A (en) * | 2014-12-26 | 2016-07-06 | 昭和电工包装株式会社 | Method for manufacturing battery |
| CN106602134A (en) * | 2016-12-29 | 2017-04-26 | 中聚（杭州）新能源科技有限公司 | High-electrolyte-content lithium ion battery and manufacturing method therefor |
| CN108390092A (en) * | 2018-01-30 | 2018-08-10 | 南京红太阳新能源有限公司 | A kind of liquid soft bag lithium ionic cell and its packaging technology |
| CN111406327A (en) * | 2018-11-02 | 2020-07-10 | 株式会社Lg化学 | Pouch type secondary battery having electrolyte solution replenishing recess formed therein |
| CN111406327B (en) * | 2018-11-02 | 2023-06-09 | 株式会社Lg新能源 | Pouch-type secondary battery having electrolyte solution replenishing recess formed therein |
| WO2021125591A1 (en) * | 2019-12-19 | 2021-06-24 | 주식회사 엘지에너지솔루션 | Secondary battery and method for manufacturing same |
| CN114388914A (en) * | 2020-10-05 | 2022-04-22 | 大众汽车股份公司 | Method for forming battery cells |
| CN115172952A (en) * | 2022-09-07 | 2022-10-11 | 楚能新能源股份有限公司 | Air bag structure of soft-package battery cell and packaging method of soft-package battery cell |
| CN115172952B (en) * | 2022-09-07 | 2022-12-02 | 楚能新能源股份有限公司 | Air bag structure of soft-packaged battery cell and packaging method of soft-packaged battery cell |
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Application publication date: 20120815 |