CN201699095U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN201699095U CN201699095U CN2010202195957U CN201020219595U CN201699095U CN 201699095 U CN201699095 U CN 201699095U CN 2010202195957 U CN2010202195957 U CN 2010202195957U CN 201020219595 U CN201020219595 U CN 201020219595U CN 201699095 U CN201699095 U CN 201699095U
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- Prior art keywords
- film
- lithium ion
- ion battery
- negative plate
- 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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model provides a lithium ion battery which overcomes the problems of loss function and safety caused by the bad electrolyte conduction of the lithium ion battery, in particular to a high-capacity power lithium ion battery. The lithium ion battery comprises a battery cell, a packaging thin film packing the battery cell and electrolyte charged into the packing thin film; the interior of the battery cell comprises one or more than one battery monomers made from a positive plate, an isolating membrane and a negative plate which are wound or superposed; the isolating membrane is spaced between the adjacent positive plate and negative plate, wherein a layer of drainage thin film is included between the positive plate and the negative plate; and the drainage thin film, the positive plate, the isolating membrane and the negative plate are together wound or superposed to form the battery monomer. The width size of the drainage thin film is equal to or larger than the width size of the positive plate or the negative plate. The drainage thin film is a pp non-woven fabric thin film. The drainage thin film is a porous thin film which can absorb and conduct organic or inorganic solvent. The thickness range of the drainage thin film is from 10 micrometer to 50 micrometer.
Description
Technical field
The utility model belongs to the battery technology field, be specifically related to a kind of lithium ion battery, especially improve lithium-ion battery electrolytes evenly conduction and technology of soaking into and employed material, be applicable to auxiliary drain of high-capacity power type lithium ion battery and infiltration field.
Background technology
Generally comprise the battery cell that several superpose successively in the lithium ion battery, each battery cell comprises negative plate, barrier film and the positive plate of reeling or superposeing, and wherein, barrier film is interval between the positive and negative plate, play the effect of electronics obstruct, ion conducting, be used to keep electrolyte simultaneously.Negative plate comprise negative current collector that general employing Copper Foil is made and attached on the negative current collector, contain the diaphragm of negative electrode active material; Positive plate comprise plus plate current-collecting body that general employing aluminium foil is made and attached on the plus plate current-collecting body, contain the diaphragm of positive active material; Barrier film is the microporous membrane for adopting technologies such as plasticizing, extraction to make then, and such structure helps the maintenance of barrier film to the organic solvent electrolyte that contains lithium salts.When making lithium ion battery, as long as one or more above-mentioned battery cells are made battery, and on the coated outside of battery packing film, in it, inject electrolyte afterwards, through and finding time, seal and get final product.Because the employed electrolyte of lithium ion battery is inflammable organic electrolyte at present, so very high to the security requirement of lithium ion battery.
The main positive and negative plate that relies on of the electrolyte conduction of existing lithium ion battery structure, barrier film itself is to the absorption conduction of electrolyte, for the little mobile phone of volume and capacity, the conventional small lithium ion battery that laptop is used, because the distance of electrolyte conduction is little, electrolyte also can conduct evenly by the absorption conduction of pole piece itself.But for the lithium-ion-power cell that monomer capacity, volume all obviously increase, the conduction of velocity of traditional battery structure electrolyte, the degree of depth all seem deficiency so that electrolyte fully conduct, soak into.
Present commercial large-scale lithium ion battery (more than the monomer capacity 10Ah), it is slow that electric in-core portion usually runs into conduction of velocity, and electrolyte conducts uneven problem.Inside lithium ion cell electrolyte conduction is bad, soak into capacity performance that uneven phenomenon can influence lithium ion battery, increase the internal resistance of cell, the caloric value when increasing battery charging and discharging, when serious even cause dangerous incident such as thermal runaway.
In view of this, necessaryly provide a kind of lithium ion battery that can effectively avoid above-mentioned security incident.
Summary of the invention
The purpose of this utility model is to provide a kind of lithium ion battery, has overcome lithium ion battery, especially high-capacity power type lithium ion battery because electrolyte bad loss function that causes of conduction and safety issue.
The utility model is achieved through the following technical solutions:
Lithium ion battery, the packing film that comprises battery, parcel battery, and charge into electrolyte in the packing film, comprise one or more battery cells of being made by positive plate, barrier film and the negative plate of reeling or superpose in the battery, barrier film is interval between adjacent positive plate, the negative plate; Wherein, also comprise one deck drain film between positive plate, the negative plate, described drain film and positive plate, barrier film and negative plate are together reeled or are superposeed the formation battery cell.
The width dimensions of described drain film is equal to or greater than the width dimensions of positive plate, negative plate.
Described drain film is the pp non-woven thin-film.
Described drain film is the cellular film with absorption, conduction organic or inorganic solvent.
The thickness range of described drain film: between 10 microns to 50 microns.
To sum up, the beneficial effects of the utility model are:
Lithium ion battery of the present utility model, also comprise one deck drain film between positive plate, the negative plate, described drain film and positive plate, barrier film and negative plate are together reeled or are superposeed the formation battery cell, the material of this drain film can be the pp non-woven thin-film or other are applicable to battery context, has the cellular film of absorption, conduction organic or inorganic solvent.Lithium ion battery structure of the present utility model can obviously improve conduction of velocity and the degree of depth of electrolyte in electric in-core portion owing to increased the porous membrane that electrolyte is had better absorption, a transport properties between positive and negative plate, thereby obviously improves the wettability of electrolyte in electric in-core portion.Solved this type of lithium ion battery cell electrolyte drain, soaked into bad problem, guaranteed the performance of battery, thereby overcome lithium ion battery, especially high-capacity power type lithium ion battery because electrolyte bad loss function that causes of conduction and safety issue.
Description of drawings
Fig. 1 is the structural representation of the battery cell embodiment one of the utility model lithium ion battery;
Fig. 2 is the sectional structure schematic diagram of the battery cell embodiment one of the utility model lithium ion battery;
Fig. 3 is the perspective view of the battery cell embodiment one of the utility model lithium ion battery;
Fig. 4 is the structural representation of the battery cell embodiment two of the utility model lithium ion battery;
Fig. 5 is the layer structure schematic diagram of the battery cell embodiment two of the utility model lithium ion battery.
Description of reference numerals:
1, negative plate, 2, the drain film, 3, first barrier film, 4, positive plate, 5, second barrier film.
Embodiment
The utility model discloses a kind of lithium ion battery, the packing film that comprises battery, parcel battery, and charge into electrolyte in the packing film, comprise one or more battery cells of being made by positive plate, barrier film and the negative plate of reeling or superpose in the battery, barrier film is interval between adjacent positive plate, the negative plate; Wherein, also comprise one deck drain film between positive plate, the negative plate, described drain film and positive plate, barrier film and negative plate are together reeled or are superposeed the formation battery cell.
The width dimensions of described drain film is equal to or greater than the width dimensions of positive plate, negative plate.
Described drain film is the pp non-woven thin-film.
Described drain film is the cellular film with absorption, conduction organic or inorganic solvent.
The thickness range of described drain film: between 10 microns to 50 microns.
Lithium ion battery structure main feature of the present utility model is, compare with traditional lithium ion battery structure increased between one deck position positive plate, the negative plate with the simultaneous drain film of barrier film.It is slightly wideer than pole piece that drain thin-film width size is recommended, but the drain film of which kind of size no matter, as long as structure meets and all belongs in this patent context.The material of this drain film can be the pp non-woven thin-film or other have the cellular film of absorption, conduction organic or inorganic solvent.The thickness of this drain film is recommended in 10 microns to 50 microns, selects according to different performance requirements.
Below in conjunction with embodiment this novel practical patent is further described:
Embodiment one:
As shown in Figure 1, 2, 3, present embodiment is that example is described further this patent structure with 50AH phosphoric acid iron lithium ion cylindrical battery:
Battery cell includes five-layer structure, and ecto-entad is followed successively by: negative plate 1, drain film 2, first barrier film 3, positive plate 4 and second barrier film 5, reeling forms cylindrical-shaped structure.
Be specially: fill a prescription anode pole piece (a slice), cathode pole piece (a slice), barrier film (two), PP drain film (a slice) of LiFePO4 is made into cylindrical lithium-ion power battery electricity core by coiling as requested.The thickness of each primary clustering following (unit: micron): anode pole piece: 142, cathode pole piece: 96, barrier film: 20, PP drain film: 35.
Electric core volume after completing than same design but the traditional structure electricity core that does not increase the drain film increase: 13%.Just volume and capacity ratio loses about 13%.
Compare the performance improvement situation with traditional same model electricity core of identical making test condition: electrolyte fully conducts, soaks into required time and shortens 50%～70%, and the electrolyte wettability of electric core middle part is obviously improved.
Embodiment two:
Shown in Fig. 4,5, the battery cell of present embodiment includes five-layer structure, is followed successively by: negative plate 1, drain film 2, first barrier film 3, positive plate 4 and second barrier film 5, stack forms plate-like structure.
Above-mentioned listed specific implementation is nonrestrictive, and to one skilled in the art, in not departing from the utility model scope, various improvement and the variation carried out all belong to protection range of the present utility model.For example, the material of positive and negative plate, the shape of battery cell etc.
Claims (8)
1. lithium ion battery, the packing film that comprises battery, parcel battery, and charge into electrolyte in the packing film, comprise one or more battery cells of being made by positive plate, barrier film and the negative plate of reeling or superpose in the battery, barrier film is interval between adjacent positive plate, the negative plate; It is characterized in that: also comprise one deck drain film between positive plate, the negative plate, described drain film and positive plate, barrier film and negative plate are together reeled or are superposeed the formation battery cell.
2. lithium ion battery according to claim 1 is characterized in that: the width dimensions of described drain film is equal to or greater than the width dimensions of positive plate, negative plate.
3. lithium ion battery according to claim 1 is characterized in that: described drain film is the pp non-woven thin-film.
4. lithium ion battery according to claim 1 is characterized in that: described drain film is the cellular film with absorption, conduction organic or inorganic solvent.
5. according to claim 3 or 4 described lithium ion batteries, it is characterized in that: the thickness range of described drain film: between 10 microns to 50 microns.
6. lithium ion battery according to claim 5, it is characterized in that: described battery cell includes five-layer structure, ecto-entad is followed successively by: negative plate (1), drain film (2), first barrier film (3), positive plate (4) and second barrier film (5), reeling forms cylindrical-shaped structure.
7. lithium ion battery according to claim 6 is characterized in that: the thickness of each primary clustering is as follows: positive plate: 142 microns, and negative plate: 96 microns, barrier film: 20 microns, drain film: 35 microns.
8. lithium ion battery according to claim 5, it is characterized in that: described battery cell includes five-layer structure, be followed successively by: negative plate (1), drain film (2), first barrier film (3), positive plate (4) and second barrier film (5), stack forms plate-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202195957U CN201699095U (en) | 2010-06-04 | 2010-06-04 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202195957U CN201699095U (en) | 2010-06-04 | 2010-06-04 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201699095U true CN201699095U (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202195957U Expired - Lifetime CN201699095U (en) | 2010-06-04 | 2010-06-04 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201699095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416632A (en) * | 2019-06-20 | 2019-11-05 | 合肥国轩高科动力能源有限公司 | Method for improving wettability of lithium ion battery pole piece |
| CN112803081A (en) * | 2021-04-14 | 2021-05-14 | 江苏时代新能源科技有限公司 | Battery monomer, preparation method thereof, battery and power utilization device |
-
2010
- 2010-06-04 CN CN2010202195957U patent/CN201699095U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416632A (en) * | 2019-06-20 | 2019-11-05 | 合肥国轩高科动力能源有限公司 | Method for improving wettability of lithium ion battery pole piece |
| CN110416632B (en) * | 2019-06-20 | 2022-03-11 | 合肥国轩高科动力能源有限公司 | Method for improving wettability of lithium ion battery pole piece |
| CN112803081A (en) * | 2021-04-14 | 2021-05-14 | 江苏时代新能源科技有限公司 | Battery monomer, preparation method thereof, battery and power utilization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI YINLONG NEW ENERGY CO., LTD. Free format text: FORMER NAME: ZHUHAI YINTONG ENERGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel Building 1 Patentee after: Zhuhai Yinlong New Energy Co.,Ltd. Address before: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel Building 1 Patentee before: ZHUHAI YINTONG ENERGY Co.,Ltd. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Shi Huajun Inventor after: Cai Huiqun Inventor after: Zhang Bin Inventor after: Wei Yincang Inventor before: Shi Huajun Inventor before: Cai Huiqun Inventor before: Zhang Bing Inventor before: Wei Yincang |
|
| CB03 | Change of inventor or designer information | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel Building 1 Patentee after: Zhuhai silver dragon new energy Limited by Share Ltd. Address before: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel Building 1 Patentee before: Zhuhai Yinlong New Energy Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 519000 Guangdong province Zhuhai City Sanzao town Jinwan District Jinhu Road No. 16 Patentee after: YINLONG ENERGY Co.,Ltd. Address before: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel Building 1 Patentee before: Zhuhai silver dragon new energy Limited by Share Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |
|
| CX01 | Expiry of patent term |