CN101626094B - Lithium ion battery and battery thereof - Google Patents
Lithium ion battery and battery thereof Download PDFInfo
- Publication number
- CN101626094B CN101626094B CN200810029406.7A CN200810029406A CN101626094B CN 101626094 B CN101626094 B CN 101626094B CN 200810029406 A CN200810029406 A CN 200810029406A CN 101626094 B CN101626094 B CN 101626094B
- Authority
- CN
- China
- Prior art keywords
- battery
- interface
- adhesive
- barrier film
- pole piece
- 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.)
- Active
Links
Classifications
-
- 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
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to a kind of lithium ion battery, it comprises the packing film of battery, parcel battery, and is filled with the electrolyte in packing film.Battery is provided with some cathode sheets and the some anode pole pieces of interval superposition, barrier film is provided with between adjacent cathode sheet and anode pole piece, barrier film comprises with the barrier film of adhesive and the barrier film not with adhesive, two kinds of barrier film alternately arrangements according to certain rules in battery, to form the adhesive interface and non-adhering interface that distribute according to certain rules between cathode sheet and anode pole piece.Because adhesive interface can improve the mechanical strength of battery, non-adhering interface has good ionic conducting property, so lithium ion battery of the present invention can meet the requirement of mechanical strength and cycle performance simultaneously.
Description
Technical field
The present invention relates to lithium ion battery technology, especially a kind of lithium ion battery and battery thereof with new structure.
Background technology
Along with the fast development of electronic technology, the function of electronic product constantly increases, and power consumption also increases thereupon.But for the ease of carrying, electronic product is continuous to miniaturization development again, and wish the volume reducing battery, therefore the battery of electronic product needs to have higher energy density usually as far as possible.Lithium ion battery is a kind of battery possessing high-energy-density, is thus widely used in various portable type electronic product.
Lithium ion battery generally includes battery, the packing film wrapping up battery and the electrolyte be filled with in packing film.Battery is superposed by some cathode sheets, some anode pole pieces and some layers of barrier film interval and is formed.The Yin/Yang pole pole piece of battery comprises Yin/Yang pole collector, and the two sides of Yin/Yang pole collector is respectively equipped with the diaphragm containing active material.Barrier film between cathode sheet and anode pole piece single employing can have a film of micropore with adhesive usually, or single employing has the film of micropore without adhesive.
When the barrier film of employing single in battery with adhesive, barrier film forms adhesive interface between cathode sheet and anode pole piece, thus makes battery have higher mechanical strength, simultaneously, adhesive can ensure that cathode sheet is relative with the position of anode pole piece fixing, increases the security performance of battery.But the adhesive on this barrier film can make that the conductivity of barrier film reduces, porosity diminishes, thus reduce the cycle performance of battery.
When the barrier film of employing single in battery without adhesive, battery can keep good conductivity and larger porosity.But, the contact interface formed between cathode sheet and anode pole piece without the barrier film of adhesive is not adhesive interface, therefore cannot relative position between fixed negative pole pole piece and anode pole piece, cathode sheet and anode pole piece are easy to dislocation, and battery is easy to occur safety problem.In addition, do not have the battery machine intensity of adhesive interface poor, battery is felt like jelly, and also can affect the normal use of battery.
In sum, in the battery of prior art, no matter select which kind of barrier film, all cannot meet the requirement of battery machine intensity and cycle performance simultaneously.
Summary of the invention
The object of the invention is to: a kind of lithium ion battery and the battery thereof that can meet battery machine intensity and cycle performance are provided simultaneously.
In order to solve the problems of the technologies described above, the invention provides a kind of core of lithium ion cell, it comprises some cathode sheets and the some anode pole pieces of interval superposition, barrier film is provided with between adjacent cathode sheet and anode pole piece, barrier film comprises with the barrier film of adhesive and the barrier film not with adhesive, two kinds of barrier film alternately arrangements according to certain rules in battery, to form the adhesive interface and non-adhering interface that distribute according to certain rules between cathode sheet and anode pole piece.
As a modification of the present invention, the regularity of distribution at two kinds of interfaces between cathode sheet and anode pole piece can be: from the interface of first between cathode and anode pole piece, and adhesive interface and non-adhering interface occurred by the cycle.
As a modification of the present invention, according to the distribution period at adhesive interface and non-adhering interface, the occurrence number at adhesive interface and non-adhering interface is fixed proportion.
As a modification of the present invention, the occurrence number ratio at adhesive interface and non-adhering interface is 1: 1.
As a modification of the present invention, according to the cathode and anode pole piece sum of described battery, occur in battery that the interface cycle number at two kinds of interfaces can not be integer, the ratio of adhesive interface and non-adhering interface occurrence number can depart from fixed proportion.
As a modification of the present invention, barrier film not with adhesive or carry out " bow " font with the barrier film of adhesive from one end of battery to the other end, with specific rule target pole piece and anode pole piece and be wound around, non-adhering interface or adhesive interface is formed between part cathode and anode pole piece, another kind of barrier film then carries out interval to other cathode and anode pole piece, to form another kind of interface between these pole pieces.
As a modification of the present invention, another kind of barrier film can be monolithic be interval between other cathode and anode pole pieces, also can carry out " bow " font by the mode approximate with front a kind of barrier film to other cathode and anode pole pieces described to be wound around, to form another kind of interface between these cathode and anode pole pieces.
As a modification of the present invention, the barrier film with adhesive must pass through containing adhesive or the organic solution process that can be grouped to strand.
In order to solve the problems of the technologies described above, present invention also offers a kind of lithium ion battery, it comprises the packing film of battery, parcel battery, and is filled with the electrolyte in packing film, wherein, the battery of lithium ion battery is the battery described in above paragraph.
Relative to prior art, lithium ion battery of the present invention at least has following Advantageous Effects: use according to certain rules in the battery of lithium ion battery with the barrier film of adhesive and the barrier film not with adhesive simultaneously, thus between the cathode and anode pole piece of battery, form the adhesive interface and the non-adhering interface that replace arrangement with certain rule.Because adhesive interface can strengthen the mechanical strength of battery, non-adhering interface then has good ionic conducting property, so the alternately arrangement in battery of adhesive interface and non-adhering interface can meet the requirement of battery machine intensity and cycle performance simultaneously.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention and Advantageous Effects thereof are further elaborated, wherein:
Fig. 1 is the structural representation of the first execution mode of battery of the present invention.
Fig. 2 is the structural representation of the second execution mode of battery of the present invention.
Embodiment
Lithium ion battery of the present invention comprises the packing film of battery, parcel battery, and is filled with the electrolyte in packing film.Battery is provided with some cathode sheets and the some anode pole pieces of interval superposition, is provided with microporous membrane as barrier film between adjacent cathode sheet and anode pole piece.The Yin/Yang pole pole piece of battery comprises Yin/Yang pole collector, and cathode current collector adopts aluminium foil to make, and anode collector adopts Copper Foil to make, and the two sides of Yin/Yang pole collector is then respectively equipped with the diaphragm containing active material.Barrier film in battery between cathode sheet and anode pole piece comprises with the microporous membrane of adhesive and the microporous membrane not with adhesive two kinds, wherein, barrier film with adhesive must pass through containing adhesive or the organic solution process that can be grouped to strand, adhesive interface can be formed between cathode and anode pole piece, to strengthen the mechanical strength of battery, and ensure that two kinds of pole pieces can not misplace; Barrier film without adhesive has good conductivity and larger porosity, therefore, it is possible to form the non-adhering interface with better ionic conducting property between cathode and anode pole piece, to ensure the cycle performance of battery.
Be used alternatingly with the barrier film of adhesive and the barrier film not with adhesive in battery of the present invention according to certain rules, thus between cathode and anode pole piece, form the different interface of adhesive interface and two kinds, non-adhering interface, to meet the different requirements of battery to mechanical strength and cycle performance.
Be described in detail below in conjunction with the structure of accompanying drawing to battery of the present invention, in all execution modes shown in the drawings, the first pole piece of battery and last a slice pole piece are all the one side pole pieces that one side is provided with active diaphragm, and other pole piece is all then the two-sided two-sided pole piece being provided with active diaphragm.But for convenience of explanation, this specification is not distinguished specially to one side pole piece and two-sided pole piece, just according to the polarity of pole piece by its called after cathode sheet and anode pole piece.
Refer to Fig. 1, it is the structural representation of the first execution mode of battery of the present invention.In the present embodiment, the head end of the barrier film 5 not with adhesive is from the top of first anode pole piece 3, be one group (last a slice anode pole piece 3 is separately one group) with every two panels cathode and anode pole piece 2,3, carry out " bow " font to all pole piece groups to be wound around, thus form non-adhering interface between different pole piece groups.6, the barrier film with adhesive carries out interval to the two panels cathode and anode pole piece 2,3 that each is organized, thus forms adhesive interface between the two panels cathode and anode pole piece 2,3 with group.
As can be seen from Figure 1, the non-adhering interface that barrier film 5,6 is formed between cathode and anode pole piece 2,3 and adhesive interface alternately occur one to one, and that is, the occurrence number ratio at two kinds of different interfaces is 1: 1.
Refer to Fig. 2, it is the structural representation of the second execution mode of battery of the present invention.In the present embodiment, the head end of the barrier film 5 ' not with adhesive is from the top of first anode pole piece 3 ', carry out " bow " font to part cathode and anode pole piece 2 ', 3 ' to be from top to bottom wound around, the result be wound around all cathode and anode pole pieces 2 ', 3 ' is divided into the three pole piece groups and one pole sheet group that alternately occur, and define non-adhering interface between different pole piece groups.With the barrier film 6 ' of adhesive then from the top of first cathode sheet 2 ', in the mode similar to barrier film 5 ', carry out " bow " font to another part cathode and anode pole piece 2 ', 3 ' to be from top to bottom wound around, the result be wound around inserts barrier film 5 ' between the adjacent pole piece 2 ', 3 ' of above-mentioned three pole piece groups, thus form adhesive interface between the adjacent cathode and anode pole piece 2 ', 3 ' with group pole piece.
As can be seen from Figure 2, the appearance order of the non-adhering interface that barrier film 5 ', 6 ' is formed between cathode and anode pole piece 2 ', 3 ' and adhesive interface is by period profile, in each interface cycle, two kinds of interfaces occur twice respectively, and namely the occurrence number ratio at two kinds of interfaces is 1: 1.
It should be noted that, when the canoe of the second execution mode septation 5 ', 6 ' is used in other battery, along with the change of cathode and anode pole piece 2 ', 3 ' sum in battery, in battery, occur that the interface cycle number at two kinds of interfaces may not be integer.Such as, when the pole piece sum two panels fewer than the pole piece in Fig. 2 illustrated embodiment of a certain battery, two interfaces of reducing are all non-adhesive interfaces, and this will make the ratio of adhesive interface and non-adhering interface occurrence number in whole battery depart from 1: 1 a little.But, the ratio of interface occurrence number departs from the appearance order that can't affect two kinds of interfaces in whole battery, that is, in battery, the interface arrangement of other parts is still and follows periodic law, so such change can't impact the cycle performance of whole battery and mechanical strength.
It is to be noted, in other execution modes of the present invention, two kinds of barrier films 5,5 ', 6,6 ' in battery can also be wound on cathode and anode pole piece 2,2 ', 3,3 ' with other rules, thus formed between cathode and anode pole piece 2,2 ', 3,3 ' with other rules or the cycle arrangement adhesive interface and non-adhering interface.According to the difference to battery machine intensity and cycle performance actual demand, the ratio of adhesive interface and non-adhering interface occurrence number can be any fixed proportion, also can be disproportionate.In addition, in each execution mode of the present invention enumerated above, although the first pole piece of battery and last a slice pole piece are all one side anode pole pieces 3,3 ', according to actual needs, the first pole piece of battery and last a slice pole piece also can be one side cathode sheets.
It should be noted that, according to the above description the announcement of book and instruction, those skilled in the art in the invention can also change above-mentioned execution mode and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention equivalent modifications more of the present invention and change.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (9)
1. a core of lithium ion cell, it comprises some cathode sheets and the some anode pole pieces of interval superposition, barrier film is provided with between adjacent cathode sheet and anode pole piece, it is characterized in that: described barrier film comprises with the barrier film of adhesive and the barrier film not with adhesive, two kinds of barrier film alternately arrangements according to certain rules in battery, to form the adhesive interface and non-adhering interface that distribute according to certain rules between cathode sheet and anode pole piece.
2. core of lithium ion cell according to claim 1, it is characterized in that: the regularity of distribution at the adhesive interface between described cathode sheet and anode pole piece and non-adhering interface is: from the interface of first between cathode and anode pole piece, adhesive interface and non-adhering interface occurred by the cycle.
3. core of lithium ion cell according to claim 2, is characterized in that: according to the distribution period at adhesive interface and non-adhering interface, and the occurrence number at described adhesive interface and non-adhering interface is than being fixed proportion.
4. core of lithium ion cell according to claim 3, is characterized in that: the occurrence number at described adhesive interface and non-adhering interface is than being 1:1.
5. core of lithium ion cell according to claim 2, it is characterized in that: according to the cathode and anode pole piece sum of described battery, in battery, the interface cycle number at appearance two kinds of interfaces is not integer, makes the occurrence number at adhesive interface and non-adhering interface ratio depart from fixed proportion.
6. core of lithium ion cell according to claim 2, it is characterized in that: described barrier film not with adhesive or the barrier film with adhesive carry out " bow " font from one end of battery to the other end, with specific rule target pole piece and anode pole piece and be wound around, and between part cathode and anode pole piece, form non-adhering interface or adhesive interface, another kind of barrier film then carries out interval to other cathode and anode pole piece, to form another kind of interface between these pole pieces.
7. core of lithium ion cell according to claim 6, it is characterized in that: described another kind of barrier film can be monolithic be interval between other cathode and anode pole pieces, also can carry out " bow " font by the mode approximate with front a kind of barrier film to other cathode and anode pole pieces to be wound around, to form described another kind of interface between cathode and anode pole piece.
8. core of lithium ion cell according to claim 1, is characterized in that: the described barrier film with adhesive must pass through containing adhesive or the organic solution process that can be grouped to strand.
9. a lithium ion battery, it comprises the packing film of battery, parcel battery, and is filled with the electrolyte in packing film, it is characterized in that: described battery is the battery in claim 1 to 8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810029406.7A CN101626094B (en) | 2008-07-11 | 2008-07-11 | Lithium ion battery and battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810029406.7A CN101626094B (en) | 2008-07-11 | 2008-07-11 | Lithium ion battery and battery thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101626094A CN101626094A (en) | 2010-01-13 |
| CN101626094B true CN101626094B (en) | 2015-09-30 |
Family
ID=41521833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810029406.7A Active CN101626094B (en) | 2008-07-11 | 2008-07-11 | Lithium ion battery and battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101626094B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5825436B2 (en) | 2012-05-30 | 2015-12-02 | エルジー・ケム・リミテッド | ELECTRODE ASSEMBLY EXCELLENT IN ELECTRODE TAB CONNECTIVITY, BATTERY CELL CONTAINING THE SAME, DEVICE AND MANUFACTURING METHOD |
| JP6163847B2 (en) * | 2013-04-17 | 2017-07-19 | 三菱自動車工業株式会社 | Secondary battery |
| CN105336976A (en) * | 2015-11-02 | 2016-02-17 | 多氟多（焦作）新能源科技有限公司 | Lithium ion battery lamination unit, battery cell, battery cell preparing method and lithium ion battery |
| CN107171017B (en) * | 2017-07-11 | 2018-10-09 | 力信（江苏）能源科技有限责任公司 | A kind of winding-laminated battery |
| CN111403820A (en) * | 2020-03-27 | 2020-07-10 | 湖北亿纬动力有限公司 | Core pack and manufacturing method thereof, single battery and manufacturing method and module thereof |
| CN111628226B (en) * | 2020-06-01 | 2022-06-21 | 蜂巢能源科技有限公司 | Lamination process and lamination device |
| CN115832605B (en) * | 2021-12-01 | 2023-10-10 | 宁德时代新能源科技股份有限公司 | Separator, battery module, battery pack, and electricity-using device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316789A (en) * | 2000-04-03 | 2001-10-10 | 惠州Tcl金能电池有限公司 | Polymer electrolyte film and lithium battery prepared with it |
| CN1387277A (en) * | 2001-05-23 | 2002-12-25 | 可卡姆工程有限公司 | Automatic production system of secondary lithium cell |
| CN1393041A (en) * | 2000-09-25 | 2003-01-22 | 韩国宝狮里电有限公司 | Pocketed electrode plate for use in lithium ion secondary battery, its manufacturing method and lithium ion secondary battery using same |
| CN1514509A (en) * | 2003-08-08 | 2004-07-21 | 新乡无氧铜材总厂 | Manufacturing method of high power type lithium ion battery |
-
2008
- 2008-07-11 CN CN200810029406.7A patent/CN101626094B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316789A (en) * | 2000-04-03 | 2001-10-10 | 惠州Tcl金能电池有限公司 | Polymer electrolyte film and lithium battery prepared with it |
| CN1393041A (en) * | 2000-09-25 | 2003-01-22 | 韩国宝狮里电有限公司 | Pocketed electrode plate for use in lithium ion secondary battery, its manufacturing method and lithium ion secondary battery using same |
| CN1387277A (en) * | 2001-05-23 | 2002-12-25 | 可卡姆工程有限公司 | Automatic production system of secondary lithium cell |
| CN1514509A (en) * | 2003-08-08 | 2004-07-21 | 新乡无氧铜材总厂 | Manufacturing method of high power type lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101626094A (en) | 2010-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101626094B (en) | Lithium ion battery and battery thereof | |
| CN102569901B (en) | A kind of lithium ion battery, core of lithium ion cell and preparation method thereof | |
| MY126850A (en) | Stacked electrochemical cell and method for preparing the same | |
| CN109346778A (en) | A kind of manufacturing method of lamination type electric core | |
| CN105098249A (en) | Flexible battery and flexible battery pack having flexible battery | |
| CN202094232U (en) | Lithium manganate lithium ion power battery | |
| CN102195096B (en) | Winding rectangular lithium ion battery and anode strip thereof | |
| CN102201594B (en) | A kind of rectangular lithium ion battery and preparation method thereof | |
| CN202695606U (en) | Z-shaped laminated cell of lithium ion battery for high-capacity automobile | |
| CN209119243U (en) | A kind of stacked wound lithium-ion battery structure | |
| CN210403934U (en) | Novel lithium ion single battery | |
| CN202977592U (en) | Pole piece for lithium ion battery, winding battery core body and lithium ion battery | |
| CN201655903U (en) | Battery with improved lamination structure | |
| CN2842758Y (en) | Laminar structure of lithium-ion cell core | |
| CN106025376A (en) | Method for continuously manufacturing winding type laminated battery structure | |
| CN201741765U (en) | Battery cell of power-type lithium ion battery | |
| CN215342699U (en) | Winding type battery cell and lithium battery | |
| CN102324491B (en) | Pole piece for laminated lithium ion battery and laminated fixture | |
| CN112331926B (en) | Battery pack, vehicle and energy storage device | |
| CN115189038A (en) | Electrode pole piece unit, electrode subassembly, battery and consumer | |
| CN202231114U (en) | Ultrathin novel polymer lithium ion battery | |
| CN201741762U (en) | High-capacity high-power lithium ion battery | |
| CN206250282U (en) | Solid union lithium cell core pole piece and the lithium cell core using the pole piece | |
| CN108075190A (en) | Solid union lithium cell core pole piece and the lithium cell core using the pole piece | |
| CN101295803A (en) | Battery film combination and lithium ion battery and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |