CN203026608U - Lithium ion battery capable of being bent to use - Google Patents
Lithium ion battery capable of being bent to use Download PDFInfo
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- CN203026608U CN203026608U CN201320021108XU CN201320021108U CN203026608U CN 203026608 U CN203026608 U CN 203026608U CN 201320021108X U CN201320021108X U CN 201320021108XU CN 201320021108 U CN201320021108 U CN 201320021108U CN 203026608 U CN203026608 U CN 203026608U
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- lithium ion
- ion battery
- working cell
- battery core
- 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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Abstract
The utility model relates to a lithium ion battery, and particularly relates to a lithium ion battery capable of being bent to use. By adopting the lithium ion battery capable of being bent to use, a lithium ion battery core work unit is prepared from lithium ion battery positive and negative plates, and an isolating membrane in a winding manner by using the conventional winding technology; and more than two core work units are connected through a conductive terminal and are encapsulated into a same flexible package shell. Compared with the prior art, the core work units are manufactured by the conventional production technology; the lithium ion battery is simple and practical in method; and meanwhile, cores are integrally and safely bent to use by using the improved technology.
Description
Technical field
The utility model relates to a kind of lithium ion battery, and more particularly, the utility model relates to a kind of lithium ion battery of bent use.
Background technology
Being widely used of lithium ion battery requires the occupation mode of lithium ion battery more and more many.Wherein, in use lithium ion battery bends, and becomes a kind of inevitable situation.Usually adopt the technology that applies to prepare positive pole and cathode pole piece in lithium ion battery, in use, if it is carried out bending action, cause between battery active material and collector body and peel off, especially when bending action surpasses to a certain degree, coiling or pole piece stacked together may break, and this all will cause barrier film be pierced and bring out internal short-circuit of battery, cause unnecessary security risk.Traditional improvement method is that the adhesion in the enhancing lithium ion battery between battery active material and collector body is peeled off with the pole piece fracture or the diaphragm that reduce in battery generation bending process.It is impaired to the destruction of the basic structures such as electrode activity surface SEI film and then the battery performance that causes that but this method still can't thoroughly solve bending action.
In some special fields, due to the needs of limitation and the structural design in space, also may need a kind of battery that can bend as required certain angle and can use safely.How reducing or to avoid the bending in use of this kind lithium ion battery electrode piece, is the problem that the utility model solves.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art just, a kind of new type lithium ion battery is provided, in the lithium ion battery safe handling, adopt the method for conducting terminal battery core in parallel working cell, use in the process of lithium ion battery in bending, bending does not occur or slightly bends the effect that (bending radian≤π/4) still also can reach significantly bending (bending radian＞π/4) in the battery core working cell, thereby avoid or reduced battery pole piece being damaged with its working interface, bend safely and effectively use to realize lithium ion battery.
To achieve these goals, the technical solution adopted in the utility model is as follows:
The lithium ion battery of this bent use, utilize traditional winding process, anode slice of lithium ion battery, cathode pole piece and barrier film are reeled be prepared into the lithium ion battery cell working cell, plural battery core working cell connects by conducting terminal, and is packaged in same flexible package housing.Wherein, when adopting conducting terminal in inner structure, at first weld respectively a whole piece conducting terminal on the positive pole that discharges according to corresponding order and cathode pole piece, and then reel along the conducting terminal vertical direction; When adopting conducting terminal destructing outside, at first anode pole piece and cathode pole piece and barrier film are reeled make battery core after, at the collector body white space welding conducting terminal of battery core outermost layer pole piece.After assembling is completed, form the battery core job note tuple that is connected by conducting terminal.There is the gap between each working cell.
Further, thickness, the length between described battery core working cell can equate also can not wait with width.
Further, described packaging shell is formed by lower house and upper shell encapsulation, the hole body corresponding with the position of battery core working cell and the degree of depth, length and width arranged on lower house or upper shell more than two, to hold corresponding battery core working cell, the hole body corresponding with the position of battery core working cell and the degree of depth, length and width perhaps arranged more than two, to hold corresponding battery core working cell on lower house and upper shell; In the lithium ion battery use procedure, the position that increases cell integrated bending radian is the position between adjacent two hole bodies, and battery core working cell generation is slight to be bent or does not bend.
Further, described battery core working cell is by anode pole piece and cathode pole piece and intercept therebetween barrier film and reel and form, and shares by comprising metallic aluminium, metallic nickel and copper nickel plating good and have the metal of excellent toughness or anodal conducting terminal and a negative pole conducting terminal that metal alloy consists of in interior conduction between the battery core working cell.The battery core working cell that is formed by connecting by conducting terminal is carried out part after the corresponding hole body of putting into lower house and upper shell one by one and is encapsulated.Wherein, both positive and negative polarity conducting terminal exit can also can be at the cell body heteropleural at the cell body homonymy.The arrangement of its position can encapsulate front design modifying according to actual operation requirements.There is the space in battery core between the working cell, between the space by being connected with conducting terminal that the battery core cell cube welds together.Conducting terminal is to have strong flexible electric conducting material to make, as metallic aluminium, metallic nickel, monel etc.Between the gap, the bending of conducting terminal can not cause that in the battery core working cell, pole piece and pole piece surface interface destroy, thereby realizes that cell integrated crooked work does not cause the battery performance damage.The battery packages housing is carried out pre-packaged rear perfusion electrolyte, then adopt to activate and process, just can obtain the lithium ion battery of our required flexible use.Namely connect two to more work battery cores working cells by conducting terminal and be packaged in fit type lithium ion battery in same packaging shell.
A nearlyer step ground, described battery core forms relation in parallel between the working cell.The mutual balance of voltage between the battery core working cell.
Nearly one go on foot ground again, described conducting terminal, its shape comprises strip and inverted T shape, only has an anodal conducting terminal and a negative pole conducting terminal in whole lithium ion battery.
Particularly, the bending radian between adjacent two hole bodies is θ
n=L
n/ max (H
n, H
n+1) and θ
n≤ π, wherein θ n represents radian, the L between adjacent two hole bodies
nRepresent arc length, H between adjacent two hole bodies
nRepresent the degree of depth, the H of previous lower hole body
n+1Represent the degree of depth of hole body under rear; Battery core working cell self can crooked radian be θ
m, and 0≤θ
m≤ π/4; The radian that whole lithium ion battery can occur is
Wherein θ represents radian and θ≤(α-1) π that whole lithium ion battery can occur, and quantity and α 〉=2 of body are cheated in the α representative.
Compared with prior art, the utility model adopts traditional production technology making battery core working cell, and method is simple and practical, adopts simultaneously the improvement technology, the whole realization of battery core is bent safely use.
Description of drawings
Fig. 1: the utility model structural representation;
Fig. 2: the utility model circuit diagram;
Fig. 3: bending sketch map between the utility model battery core working cell.
Wherein, 1. battery core working cell, 2-1. upper shell, 2-2. lower house.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model lithium ion battery is described in further detail, but execution mode of the present utility model is not limited to this.
after adopting the traditional handicraft preparation and cutting the lithium ion battery plus-negative plate pole piece, get two groups of pole pieces and include anode pole piece and cathode pole piece, in the situation that do not weld in advance conducting terminal, the mode of separating anode pole piece and cathode pole piece according to barrier film, in employing pole piece collector body, conducting terminal weld zone mode is outwardly assembled, coiling is made the battery core working cell that two sizes are 3.60mm*25.0mm*26.0mm (thickness * width * length), adopt the conducting terminal of strip, length direction along the battery core working cell carries out parallel welding, make when linking together after two work battery core element solder, need keeping gap between two battery core unit is that positive pole and the negative pole conducting terminal of 3.0mm and battery core derived by the same side.
Adopt casting technique, packaging shell is cheated the body casting process.The present embodiment can select the aluminum plastic film of good casting character to process processing.Two 2.6mm*26mm*27mm sizes of casting are cheated body on the whole piece aluminum plastic film, the gap of hole between body is 2.8mm (casting technique has influence on the putting position of battery core working cell in the body of hole, so between the body of hole, the gap is different from the gap between the battery core unit).On another full wafer aluminum plastic film, two 1.2mm*26mm*27mm sizes of casting are cheated body, and the gap between the body of hole is 2.8mm.
The pack case that the battery core working cell is housed is carried out encapsulation process, then pour into electrolyte and carry out activation processing.And through follow-up shape mould wait processing after, can obtain a complete lithium ion battery, its size of main body is 3.80mm*29.0mm*60.0mm (thickness * width * length).
In use procedure, in the lithium ion battery that is made by said method, two battery core working cells are not crooked, namely get θ
m=0.
In use procedure, the linkage section of the lithium ion battery that can be made by said method between two battery core working cells is flexible, and flexure operation can carry out towards obverse and reverse.Positive H in this battery
n=2.60mm, reverse side H
n'=1.2mm, i.e. during the positive bending of present dynasty, maximum can crooked radian be θ
n=2.8mm/2.6mm ≈ 1.077; When present dynasty's reverse side is crooked, maximum can crooked radian be θ
n'=2.8mm/1.2mm ≈ 2.333.
Embodiment 2
Adopt the manufacture method making battery core working cell identical with embodiment 1, positive pole and the negative pole conducting terminal of different is battery core working cell are derived by heteropleural, and the lithium ion battery size of main body that gained is complete is 3.80mm*29.0mm*62.0mm (thickness * width * length).This embodiment gained battery can be crooked radian identical with embodiment 1.
Embodiment 3
Adopt the manufacture method making battery core working cell identical with embodiment 1, different is to adopt the inverted T shape conducting terminal to replace the strip conducting terminal.The welding ends of inverted T shape conducting terminal still adopts and the parallel welding of battery core working cell length direction, it is vertical with battery core working cell length direction to be that conducting terminal is derived end, and the length direction that makes prepared lithium ion battery is mutually vertical with the length direction of battery core working cell.Prepared lithium ion battery size of main body is 3.80mm*57.0mm*30.0mm (thickness * width * length).This embodiment gained battery can be crooked radian identical with embodiment 1.
Embodiment 4
Adopt the pole piece preparation technology identical with embodiment 1, difference is, welds in advance conducting terminal, namely adopts conducting terminal to carry out the battery core preparation at interior winding method.Prepared lithium ion battery size of main body and battery crooked radian are identical with embodiment 1.
Embodiment 5
Adopt the preparation technology similar to embodiment 1, difference is, two battery core working cell sizes of preparation are respectively 3.60mm*25.0mm*26.0mm (thickness * width * length) and 3.60mm*25.0mm*28.0mm.The prepared battery main body of this embodiment is of a size of 3.80mm*29.0mm*62.0mm, but its can be crooked radian identical with embodiment 1.
Embodiment 6
Adopt the similar preparation technology of embodiment 1, difference is, preparation battery core working cell size is respectively 3.60mm*25.0mm*26.0mm and 3.80mm*25.0mm*26.0mm.The obtained battery main body size of this embodiment becomes 4.00mm*29.0mm*60.0mm, and (battery main body thickness is determined by amount the thickest in the battery core working cell.) the positive H of two battery cores simultaneously
n=2.6mm and H
n+1=2.9mm, back side H
n'=1.2mm and H
n+1'=1.1mm namely can calculate front crooked radian θ
n=2.8mm/max (2.6mm, 2.9mm)=θ .966; Reverse side crooked radian θ
n'=2.8mm/max (1.2mm, 1.1mm) ≈ 2.333.
In practical process, in the lithium ion battery that is made by the method for stating, two battery core working cells can hettocyrtosis, gets θ
m=π/4=0.785.
Therefore, in the present embodiment, positive crooked total radian of lithium ion battery is
The crooked total radian of reverse side is
Embodiment 7
Adopt the battery core working cell preparation technology identical with embodiment 1, difference is, 3 sizes of preparation of reeling are the battery core working cell into 3.60mm*25.0mm*26.0mm, prepared battery main body size will become 3.80mm*29.0mm*89.0mm, the integrally bending radian maximum that can calculate battery is respectively, the front crooked radian
Reverse side crooked radian θ '=4.666.
Embodiment 8
Adopt the battery core working cell preparation technology identical with embodiment 7, difference is, wherein the welded gaps between two unit becomes 3.6mm by 3.0mm, and the distance between corresponding assembly pit body becomes 3.4mm.Prepared battery main body size will become 3.80mm*29.0mm*89.6mm.Simultaneously, the front crooked radian between the battery core working cell will become 1.077 and 1.308, and the reverse side crooked radian will become 2.333 and 2.833; Corresponding battery front side crooked radian maximum is 2.385, and the crooked maximum radian of reverse side will become 5.166.
Embodiment 9
Adopt the battery core working cell preparation technology identical with embodiment 7, difference is, the battery core working cell is increased to 5 by 3.Use in the case battery except crooked in the same direction certain radian, can also bend to the S type.
During the crooked work of the lithium ion battery of above embodiment, all require the only junction between crooked battery core working cell, the not crooked or hettocyrtosis in battery core working cell self.Owing to being consisted of by the electric conducting material of high tenacity between the battery core working cell, therefore can not cause the performance change of battery core working cell self.Adopt the utility model can realize the safe handling of lithium ion battery under case of bending.
Claims (7)
1. the lithium ion battery of a bent use, is characterized in that, plural battery core working cell connects by conducting terminal, and is packaged in same flexible package housing.
2. the lithium ion battery of a kind of bent use according to claim 1 is characterized in that thickness, the length between described battery core working cell can equate also can not wait with width.
3. the lithium ion battery of a kind of bent use according to claim 1, it is characterized in that described packaging shell is formed by upper shell and lower house encapsulation, the hole body corresponding with the position of battery core working cell and the degree of depth, length and width arranged more than two, to hold corresponding battery core working cell on upper shell and/or lower house; In the lithium ion battery use procedure, the position that increases the bending radian is the positions between adjacent two hole bodies, and the battery core working cell hettocyrtosis occurs or do not bend.
4. the lithium ion battery of a kind of bent use according to claim 1, it is characterized in that described battery core working cell by anode pole piece and cathode pole piece and intercept therebetween barrier film reeling and forming, share by comprising metallic aluminium, metallic nickel and copper nickel plating good and have the metal of excellent toughness or anodal conducting terminal and a negative pole conducting terminal that metal alloy consists of in interior conduction between the battery core working cell.
5. the lithium ion battery of a kind of bent use according to claim 2 is characterized in that forming relation in parallel between described battery core working cell.
6. the lithium ion battery of a kind of bent use according to claim 2, is characterized in that described conducting terminal, and its shape comprises strip and inverted T shape, only has an anodal conducting terminal and a negative pole conducting terminal in whole lithium ion battery.
7. the lithium ion battery of a kind of bent use according to claim 3, is characterized in that the bending radian between adjacent two hole bodies is θ
n=L
n/ max (H
n, H
n+1) and θ
n≤ π, wherein θ
nRepresent radian, L between adjacent two hole bodies
nRepresent arc length, H between adjacent two hole bodies
nRepresent the degree of depth, the H of previous lower hole body
n+1Represent the degree of depth of hole body under rear; Battery core working cell self can crooked radian be θ
m, and 0≤θ
m≤ π/4; The radian that whole lithium ion battery can occur is
Wherein θ represents radian and θ≤(α-1) π that whole lithium ion battery can occur, and quantity and α 〉=2 of body are cheated in the α representative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320021108XU CN203026608U (en) | 2013-01-16 | 2013-01-16 | Lithium ion battery capable of being bent to use |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320021108XU CN203026608U (en) | 2013-01-16 | 2013-01-16 | Lithium ion battery capable of being bent to use |
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| Publication Number | Publication Date |
|---|---|
| CN203026608U true CN203026608U (en) | 2013-06-26 |
Family
ID=48650563
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|---|---|---|---|
| CN201320021108XU Expired - Lifetime CN203026608U (en) | 2013-01-16 | 2013-01-16 | Lithium ion battery capable of being bent to use |
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|---|---|
| CN (1) | CN203026608U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227298A (en) * | 2013-05-14 | 2013-07-31 | 东莞新能源科技有限公司 | Bendable lithium ion battery |
| CN104716386A (en) * | 2013-12-16 | 2015-06-17 | 三星Sdi株式会社 | Flexible secondary battery |
| CN105609866A (en) * | 2016-03-09 | 2016-05-25 | 湖南立方新能源科技有限责任公司 | Preparation method of flexible battery |
| CN105720292A (en) * | 2014-12-17 | 2016-06-29 | 精工电子有限公司 | Electrochemical cell and portable device |
| CN105720294A (en) * | 2016-04-22 | 2016-06-29 | 惠州亿纬锂能股份有限公司 | Bending battery |
| CN105914305A (en) * | 2015-02-24 | 2016-08-31 | 松下知识产权经营株式会社 | Flexible battery |
| CN108155332A (en) * | 2018-01-04 | 2018-06-12 | 广东长盈精密技术有限公司 | The substrate and intelligent terminal of a kind of bent battery, terminal |
| CN110770938A (en) * | 2017-06-22 | 2020-02-07 | 阿莫绿色技术有限公司 | Flexible battery connector and belt comprising same |
| CN110797565A (en) * | 2018-08-03 | 2020-02-14 | 中兴通讯股份有限公司 | Foldable battery and preparation method thereof |
| CN110832670A (en) * | 2017-08-29 | 2020-02-21 | 三洋电机株式会社 | Battery pack and method for manufacturing same |
| CN113169401A (en) * | 2020-03-02 | 2021-07-23 | 东莞新能安科技有限公司 | Battery, battery module, battery pack, electric vehicle, energy storage device and electric tool |
| WO2021174402A1 (en) * | 2020-03-02 | 2021-09-10 | 东莞新能安科技有限公司 | Battery, battery module, battery pack, electric vehicle, energy storage apparatus, and electric tool |
| WO2021195924A1 (en) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| WO2021195925A1 (en) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | Battery cell structure and battery |
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| CN114730944A (en) * | 2021-03-15 | 2022-07-08 | 宁德新能源科技有限公司 | Flexible battery and electric device using same |
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2013
- 2013-01-16 CN CN201320021108XU patent/CN203026608U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103227298A (en) * | 2013-05-14 | 2013-07-31 | 东莞新能源科技有限公司 | Bendable lithium ion battery |
| CN104716386A (en) * | 2013-12-16 | 2015-06-17 | 三星Sdi株式会社 | Flexible secondary battery |
| CN104716386B (en) * | 2013-12-16 | 2020-04-10 | 三星Sdi株式会社 | Flexible secondary battery |
| CN105720292B (en) * | 2014-12-17 | 2020-07-07 | 精工电子有限公司 | Electrochemical cell and portable device |
| CN105720292A (en) * | 2014-12-17 | 2016-06-29 | 精工电子有限公司 | Electrochemical cell and portable device |
| CN105914305A (en) * | 2015-02-24 | 2016-08-31 | 松下知识产权经营株式会社 | Flexible battery |
| CN105609866B (en) * | 2016-03-09 | 2018-05-11 | 湖南立方新能源科技有限责任公司 | A kind of preparation method of flexible battery |
| CN105609866A (en) * | 2016-03-09 | 2016-05-25 | 湖南立方新能源科技有限责任公司 | Preparation method of flexible battery |
| CN105720294A (en) * | 2016-04-22 | 2016-06-29 | 惠州亿纬锂能股份有限公司 | Bending battery |
| CN110770938B (en) * | 2017-06-22 | 2022-07-05 | 阿莫绿色技术有限公司 | Flexible battery connector and belt comprising same |
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| CN108155332A (en) * | 2018-01-04 | 2018-06-12 | 广东长盈精密技术有限公司 | The substrate and intelligent terminal of a kind of bent battery, terminal |
| CN110797565A (en) * | 2018-08-03 | 2020-02-14 | 中兴通讯股份有限公司 | Foldable battery and preparation method thereof |
| CN113169401A (en) * | 2020-03-02 | 2021-07-23 | 东莞新能安科技有限公司 | Battery, battery module, battery pack, electric vehicle, energy storage device and electric tool |
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| WO2021174402A1 (en) * | 2020-03-02 | 2021-09-10 | 东莞新能安科技有限公司 | Battery, battery module, battery pack, electric vehicle, energy storage apparatus, and electric tool |
| CN113994519B (en) * | 2020-03-31 | 2023-06-06 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| CN113994519A (en) * | 2020-03-31 | 2022-01-28 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| CN113924679A (en) * | 2020-03-31 | 2022-01-11 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| WO2021195924A1 (en) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| WO2021195925A1 (en) * | 2020-03-31 | 2021-10-07 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| CN113924679B (en) * | 2020-03-31 | 2023-08-22 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| CN113826256A (en) * | 2020-03-31 | 2021-12-21 | 宁德新能源科技有限公司 | Battery cell structure and battery |
| CN114730944A (en) * | 2021-03-15 | 2022-07-08 | 宁德新能源科技有限公司 | Flexible battery and electric device using same |
| WO2022193089A1 (en) * | 2021-03-15 | 2022-09-22 | 宁德新能源科技有限公司 | Flexible battery and electrical device using same |
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