CN101894937A - Lithium ion battery and positive plate thereof - Google Patents
Lithium ion battery and positive plate thereof Download PDFInfo
- Publication number
- CN101894937A CN101894937A CN2010102206744A CN201010220674A CN101894937A CN 101894937 A CN101894937 A CN 101894937A CN 2010102206744 A CN2010102206744 A CN 2010102206744A CN 201010220674 A CN201010220674 A CN 201010220674A CN 101894937 A CN101894937 A CN 101894937A
- Authority
- CN
- China
- Prior art keywords
- ion battery
- positive plate
- based lithium
- battery positive
- collecting body
- 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.)
- Pending
Links
Images
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
Landscapes
- Secondary Cells (AREA)
Abstract
The invention discloses a lithium ion battery positive plate, comprising a positive current collector as well as a positive membrane and a terminal which are distributed on the positive current collector; wherein the surface of the positive current collector uncovered by the positive membrane and terminal is distributed with an insulation protective layer capable of improving the surface resistance of the positive current collector. The lithium ion battery positive plate of the invention protects the positive current collector uncovered by the positive membrane and terminal by virtue of the insulation protective layer, the ohmic resistance when the positive current collector is contacted with negative membrane can be improved, and security feature of lithium ion battery can be improved. Besides, the invention also discloses a lithium ion battery applying the lithium ion battery positive plate.
Description
Technical field
The present invention relates to a kind of lithium ion battery, especially a kind of lithium ion battery and positive plate thereof with good safety energy.
Background technology
Along with the development of modern electronic technology, various portable equipments such as video camera, digital camera, notebook computer, MP4, portable DVD player etc. have obtained being extensive use of.Lithium ion battery is as a kind of energy density height, eco-friendly battery, advantage such as in light weight because of having, that energy storage is big, power is big, the life-span is long, the self discharge coefficient is little, temperature accommodation is wide in range is subjected to people's favor gradually, is widely used in the various portable equipments.
Lithium ion battery has special electrochemical system, generally uses carbonic ester as electrolyte solvent, and the inflammable characteristic of carbonic ester makes lithium ion battery also bring certain potential safety hazard when facilitating for people.Overcharge with internal short-circuit is two subject matters of threat lithium ion battery security energy; by using external protective circuit and anti-overcharge electrolysis additive can solve the safety problem that overcharges of lithium ion battery to a great extent; yet because the not detectable property of internal short-circuit, it still is a major issue that threatens lithium ion battery safety.
In order to realize the facility of manufacturing process; based lithium-ion battery positive plate is understood reserve part usually not by the plus plate current-collecting body of anodal diaphragm and terminal covering; when lithium ion battery during by improper use; as be squeezed, clash into or when mechanical damage such as being pierced through by sharp-pointed article, the plus plate current-collecting body that very easily causes exposing contacts with cathode membrane and causes short circuit.At this moment, the short-circuit resistance that short circuit forms is little, and short circuit current is big, and short dot temperature at short notice raises suddenly, may cause the battery thermal runaway, causes safety problem easily.
The plus plate current-collecting body (being generally aluminium foil) that experiment showed, lithium ion battery contacts with cathode membrane and the internal short-circuit that causes is the most dangerous short circuit mode of lithium ion battery, causes the on fire even blast of battery easily.For fear of the safety problem that this kind internal short-circuit causes, available technology adopting the fail safes that improve battery of following several modes.
Such as in No. 200710026671.5, the Chinese invention patent application CN of on February 2nd, 2007 application announcement: at the cathode membrane surface coverage layer of metal oxidation film of lithium ion battery, this layer metal oxide film has the effect that improves the cathode membrane sheet resistance and reduce thermal conduction rate, can effectively improve the short circuit security feature of battery.Simultaneously, this layer metal oxide film adopts loose structure, and lithium ion can pass and realize discharging and recharging of battery smoothly, has guaranteed the chemical property of battery.
And for example disclose in No. 200710027688.2 institutes of the Chinese invention patent application CN of on April 25th, 2007 application: can be in cathode membrane blended metal oxide particle or graphite granule carried out the surface coating; to increase the body phase resistance of cathode membrane; reduce short circuit current; reduce the temperature rise of short dot, improve the short circuit security feature of battery.
Disclose in No. 200810029727.7, the Chinese invention patent application CN of on July 24th, 2008 application for another example: can carry out multi-layer coated anodal diaphragm, to strengthen the bonding of anodal diaphragm and plus plate current-collecting body, increase short-circuit resistance, improve the short circuit security feature of battery.
The present invention is intended to by using insulating protective layer to not protected by the plus plate current-collecting body of anodal diaphragm and terminal covering; contact resistance when increasing plus plate current-collecting body and cathode membrane short circuit; reduce short circuit current and short dot temperature rise, improve the short circuit security feature of lithium ion battery.
Summary of the invention
One object of the present invention is: a kind of based lithium-ion battery positive plate with good safety energy is provided.
In order to realize the foregoing invention purpose; the invention provides a kind of based lithium-ion battery positive plate; it comprises plus plate current-collecting body and the anodal diaphragm and the terminal that are distributed on the plus plate current-collecting body; wherein, plus plate current-collecting body is not distributed with the insulating protective layer that can improve the plus plate current-collecting body sheet resistance on the surface of anodal diaphragm and terminal covering.
With respect to prior art; based lithium-ion battery positive plate of the present invention has the following advantages at least: plus plate current-collecting body is not distributed with the insulating protective layer that can improve the plus plate current-collecting body sheet resistance on the surface of anodal diaphragm and terminal covering; by insulating protective layer the exposed plus plate current-collecting body of positive plate is protected; Ohmic resistance in the time of can increasing plus plate current-collecting body and contact with cathode membrane improves the security feature of lithium ion battery.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, described insulating protective layer is a polymer coating.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, the polymer in the described polymer coating is selected from butadiene-styrene rubber, acrylonitrile-butadiene rubber, carboxy terminated nitrile rubber, carboxylic styrene-butadiene rubber, neoprene, epoxy glue, silicone gums, polyurethane adhesive, urea-formaldehyde resin adhesive, phenolic resin glue, polybutene, polypropylene, Kynoar, polyimides, polyvinyl acetate, polyacrylate or its combination.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, described insulating protective layer is the insulating cement ply of paper.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, described insulating protective layer is the metal oxide particle coating.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, the metal oxide particle in the described coating of metal oxides is selected from alundum (Al, titanium dioxide, zinc oxide, magnesium oxide or its combination.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, described insulating protective layer is the silica dioxide granule coating.
As a kind of improvement of based lithium-ion battery positive plate of the present invention, described plus plate current-collecting body is an aluminium foil.
Another object of the present invention is to: a kind of lithium ion battery with good safety energy is provided.
In order to realize the foregoing invention purpose, the invention provides a kind of lithium ion battery, it comprises positive plate, negative plate, is interval in the barrier film between positive plate and the negative plate, and electrolyte, and wherein, positive plate is aforementioned based lithium-ion battery positive plate.
Description of drawings
Below in conjunction with the drawings and specific embodiments, describe lithium ion battery of the present invention and positive plate thereof in detail, wherein:
Figure 1 shows that the structural representation of based lithium-ion battery positive plate of the present invention.
Figure 2 shows that lithium ion battery embodiment 1 to 3 of the present invention and the comparative example lithium ion battery change in voltage curve in the experiment of nail thorn.
Figure 3 shows that lithium ion battery embodiment 1 to 3 of the present invention and the comparative example lithium ion battery surface temperature change curve in the experiment of nail thorn.
Embodiment
Below in conjunction with embodiment and accompanying drawing, describe lithium ion battery of the present invention and positive plate thereof in detail, but embodiments of the invention are not limited thereto.
The preparation of based lithium-ion battery positive plate
The preparation of embodiment 1 based lithium-ion battery positive plate of the present invention in two steps, the first step, prepare common based lithium-ion battery positive plate: with positive electrode active materials cobalt acid lithium, binding agent polyvinylidene fluoride (PVDF), conductive agent (conductive carbon Super-P) at dispersant N, mix in the N-dimethyl pyrrolidone (NMP), obtain homogeneous, stable anode sizing agent; Then, anode sizing agent is coated on the plus plate current-collecting body aluminium foil equably, obtains common based lithium-ion battery positive plate through intensive drying.In second step, the positive plate that the first step is obtained carries out insulation protection to be handled: at first, metal oxide particle and binding agent SBR emulsion (SBR) are dissolved in the dispersant water acquisition homogeneous, stable slurry according to certain weight ratio; Then, adopt the mode that is coated with or dips that slurry is covered on the exposed plus plate current-collecting body aluminium foil of positive plate, obtain having the positive plate of insulating protective layer after the drying.In the present embodiment, metal oxide particle can be selected from Al as required
2O
3, MgO, ZnO, TiO
2Or its combination.But according to other embodiments of the invention, insulating protective layer also can be nonmetal oxide SiO
2Grain coating.
The preparation of embodiment 2 based lithium-ion battery positive plates equally in two steps, it is identical with embodiment 1 that the first step prepares common based lithium-ion battery positive plate, repeats no more.Difference from Example 1 is, in second step of embodiment 2, adopt polymer coating that exposed plus plate current-collecting body aluminium foil is protected: at first, polymer powders (or emulsion) and appropriate solvent (or dispersant) to be mixed acquisition corresponding solution (or dispersion liquid); Then, this solution (or dispersion liquid) is covered on the exposed plus plate current-collecting body aluminium foil of positive plate, obtain having the positive plate of insulating polymer coating protection after the drying by the coating or the mode of dipping.As required, polymer can be selected from butadiene-styrene rubber, acrylonitrile-butadiene rubber, carboxy terminated nitrile rubber, carboxylic styrene-butadiene rubber, neoprene, epoxy glue, silicone gums, polyurethane adhesive, urea-formaldehyde resin adhesive, phenolic resin glue, polybutene, polypropylene, Kynoar, polyimides, polyvinyl acetate, polyacrylate or its combination.
The preparation of embodiment 3 based lithium-ion battery positive plates equally in two steps, it is identical with embodiment 1 that the first step prepares common based lithium-ion battery positive plate, repeats no more.Difference from Example 1 is, in second step of embodiment 3, adopts the insulation gummed paper that exposed plus plate current-collecting body aluminium foil is protected.On the exposed plus plate current-collecting body aluminium foil of positive plate, use the insulation gummed paper to cover, can realize insulation protection equally exposed plus plate current-collecting body aluminium foil.With respect to the embodiment of the invention 1 and embodiment 2, the embodiment of the invention 3 is easier to realize.
Figure 1 shows that the structural representation of the based lithium-ion battery positive plate of the present invention 10 that obtains according to the embodiment of the invention 1 to 3; it comprises: plus plate current-collecting body aluminium foil 20, be distributed in plus plate current-collecting body aluminium foil 20 lip-deep anodal diaphragm 30 and insulating protective layers 40; wherein; insulating protective layer 40 is attached on the exposed plus plate current-collecting body aluminium foil 20 of based lithium-ion battery positive plate 10, promptly on the surface of the plus plate current-collecting body aluminium foil 20 that is not covered by anodal diaphragm 30 and terminal (not shown).
The preparation of lithium ion battery
Based lithium-ion battery positive plate and the barrier film that will obtain according to the foregoing description 1 to 3, the negative plate that contains negative active core-shell material through coiling, go into shell, fluid injection, encapsulate, change into, exhaust, volume test and operation such as wear out obtain lithium ion battery embodiment 1 to 3 of the present invention respectively.Wherein, the positive electrode active materials in the anodal diaphragm is a cobalt acid lithium, and the negative active core-shell material in the negative plate is a graphite, and barrier film is three layers of composite perforated membrane of PP/PE/PP, and electrolyte is the carbonate solution that contains 1mol/L LiPF6.
As a comparison, common based lithium-ion battery positive plate and the barrier film that the first step among the embodiment 1 of based lithium-ion battery positive plate of the present invention is made, contain negative active core-shell material negative plate through coiling, go into shell, fluid injection, encapsulate, change into, exhaust, volume test and operation such as aging obtain the comparative example lithium ion battery respectively.Wherein, the positive electrode active materials in the anodal diaphragm is a cobalt acid lithium, and the negative active core-shell material in the negative plate is a graphite, and barrier film is three layers of composite perforated membrane of PP/PE/PP, and electrolyte is the carbonate solution that contains 1mol/L LiPF6.
Internal short-circuit with nail thorn test simulation lithium ion battery; the result shows: the lithium ion battery that uses the exposed plus plate current-collecting body aluminium foil of coating of metal oxides, polymer coating or insulating cement ply of paper protection positive plate; all can be with lower temperature (＜70 ℃) by the test of nail thorn; can not cause safety problem, Fig. 2 and Fig. 3 have provided lithium ion battery embodiment 1 to 3 of the present invention and voltage and the surface temperature change curve of comparative example lithium ion battery in the experiment of nail thorn respectively.
In conjunction with above-mentioned detailed description to each embodiment as can be seen, in the based lithium-ion battery positive plate of the present invention, be not distributed with the insulating protective layer that can improve the plus plate current-collecting body sheet resistance on the surface that plus plate current-collecting body is covered by anodal diaphragm and terminal.When the lithium ion battery generation of adopting above-mentioned positive plate contacts the internal short-circuit that causes because of plus plate current-collecting body with cathode membrane, the ohmic contact resistance of short dot is big, short-circuit current density is little, the temperature rise of short dot is lower, reduce the danger of battery blast on fire, can effectively improve the short circuit security feature of lithium ion battery.
Need to prove, the announcement of book and elaboration according to the above description, those skilled in the art in the invention can also change and revise above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should be in the protection range of claim of the present invention to equivalent modifications more of the present invention and change.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the present invention just for convenience of description.
Claims (9)
1. based lithium-ion battery positive plate; it comprises plus plate current-collecting body and the anodal diaphragm and the terminal that are distributed on the plus plate current-collecting body, it is characterized in that: described plus plate current-collecting body is not distributed with the insulating protective layer that can improve the plus plate current-collecting body sheet resistance on the surface of anodal diaphragm and terminal covering.
2. based lithium-ion battery positive plate according to claim 1 is characterized in that: described insulating protective layer is a polymer coating.
3. based lithium-ion battery positive plate according to claim 2 is characterized in that: the polymer in the described polymer coating is selected from butadiene-styrene rubber, acrylonitrile-butadiene rubber, carboxy terminated nitrile rubber, carboxylic styrene-butadiene rubber, neoprene, epoxy glue, silicone gums, polyurethane adhesive, urea-formaldehyde resin adhesive, phenolic resin glue, polybutene, polypropylene, Kynoar, polyimides, polyvinyl acetate, polyacrylate or its combination.
4. based lithium-ion battery positive plate according to claim 1 is characterized in that: described insulating protective layer is the insulating cement ply of paper.
5. based lithium-ion battery positive plate according to claim 1 is characterized in that: described insulating protective layer is the metal oxide particle coating.
6. based lithium-ion battery positive plate according to claim 5 is characterized in that: the metal oxide particle in the described metal oxide particle coating is selected from alundum (Al, titanium dioxide, zinc oxide, magnesium oxide or its combination.
7. based lithium-ion battery positive plate according to claim 1 is characterized in that: described insulating protective layer is the silica dioxide granule coating.
8. based lithium-ion battery positive plate according to claim 1 is characterized in that: described plus plate current-collecting body is an aluminium foil.
9. lithium ion battery, it comprises positive plate, negative plate, is interval in the barrier film between positive plate and the negative plate, and electrolyte, it is characterized in that: described positive plate is each described based lithium-ion battery positive plate in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102206744A CN101894937A (en) | 2010-07-02 | 2010-07-02 | Lithium ion battery and positive plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102206744A CN101894937A (en) | 2010-07-02 | 2010-07-02 | Lithium ion battery and positive plate thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101894937A true CN101894937A (en) | 2010-11-24 |
Family
ID=43104068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102206744A Pending CN101894937A (en) | 2010-07-02 | 2010-07-02 | Lithium ion battery and positive plate thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101894937A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610828A (en) * | 2011-01-24 | 2012-07-25 | Sb锂摩托有限公司 | Secondary battery |
| CN102719214A (en) * | 2012-06-28 | 2012-10-10 | 东莞市迈科锂离子电池工业节能技术研究院 | Insulating glue for lithium ion batteries and using method of insulating glue |
| CN103268957A (en) * | 2013-05-14 | 2013-08-28 | 曙鹏科技（深圳）有限公司 | Flexible packaging lithium-ion battery |
| CN103280597A (en) * | 2013-05-31 | 2013-09-04 | 宁德新能源科技有限公司 | Lithium ion battery |
| CN103545559A (en) * | 2013-10-08 | 2014-01-29 | 宁德新能源科技有限公司 | Laminated type lithium ion battery |
| CN104685678A (en) * | 2011-10-31 | 2015-06-03 | 波士顿学院董事会 | Hetero-nanostructure materials for use in energy-storage devices and methods of fabricating same |
| CN105576280A (en) * | 2014-10-09 | 2016-05-11 | 东莞新能源科技有限公司 | Flexible cell and preparation method thereof |
| CN107768673A (en) * | 2016-08-23 | 2018-03-06 | 宁德新能源科技有限公司 | Modified foam metal, electrode slice and secondary cell |
| CN108428900A (en) * | 2018-03-15 | 2018-08-21 | 重庆市紫建电子有限公司 | A kind of based lithium-ion battery positive plate and preparation method thereof |
| JP2018181527A (en) * | 2017-04-07 | 2018-11-15 | トヨタ自動車株式会社 | All-solid battery |
| CN109524606A (en) * | 2018-11-05 | 2019-03-26 | 宁德新能源科技有限公司 | Pole piece, battery core and battery |
| CN111164800A (en) * | 2017-11-29 | 2020-05-15 | 株式会社杰士汤浅国际 | Electrode plate, electrode assembly and energy storage device |
| CN111656576A (en) * | 2018-03-09 | 2020-09-11 | 松下知识产权经营株式会社 | Positive electrode for secondary battery, positive electrode current collector for secondary battery, and secondary battery |
| CN112670442A (en) * | 2020-12-24 | 2021-04-16 | 珠海冠宇电池股份有限公司 | Positive plate, battery roll core, battery and positive plate preparation method |
| CN113078282A (en) * | 2021-03-23 | 2021-07-06 | 珠海冠宇电池股份有限公司 | Positive plate and lithium ion battery |
| CN113131097A (en) * | 2021-03-24 | 2021-07-16 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| WO2021189410A1 (en) * | 2020-03-27 | 2021-09-30 | 宁德新能源科技有限公司 | Pole piece, cell and battery |
| CN114503300A (en) * | 2020-11-20 | 2022-05-13 | 宁德新能源科技有限公司 | Pole piece for improving safety of electrode assembly, electrochemical device comprising same and electronic device comprising same |
| US11616252B2 (en) * | 2019-08-14 | 2023-03-28 | Hyundai Motor Company | Lithium ion secondary battery and manufacturing method of the same |
| US11695160B2 (en) | 2018-11-05 | 2023-07-04 | Ningde Amperex Technology Limited | Electrochemical device |
| WO2023216240A1 (en) * | 2022-05-13 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Secondary battery and preparation method therefor, battery module, battery pack, and electric device |
| US11978862B2 (en) | 2018-11-05 | 2024-05-07 | Ningde Amperex Technology Limited | Electrochemical device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801507A (en) * | 2005-01-12 | 2006-07-12 | 松下电器产业株式会社 | Lithium secondary battery and method for producing the same |
| CN1864288A (en) * | 2004-01-09 | 2006-11-15 | 松下电器产业株式会社 | Lithium ion secondary cell |
| CN1996643A (en) * | 2006-12-26 | 2007-07-11 | 天津力神电池股份有限公司 | A square lithium battery with the high insulation performance and its making method |
| CN101295802A (en) * | 2007-04-25 | 2008-10-29 | 东莞新能源电子科技有限公司 | Safety lithium ion cell |
| CN101431169A (en) * | 2008-10-29 | 2009-05-13 | 东莞新能源科技有限公司 | Lithium ion cell and cell body |
-
2010
- 2010-07-02 CN CN2010102206744A patent/CN101894937A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864288A (en) * | 2004-01-09 | 2006-11-15 | 松下电器产业株式会社 | Lithium ion secondary cell |
| CN1801507A (en) * | 2005-01-12 | 2006-07-12 | 松下电器产业株式会社 | Lithium secondary battery and method for producing the same |
| CN1996643A (en) * | 2006-12-26 | 2007-07-11 | 天津力神电池股份有限公司 | A square lithium battery with the high insulation performance and its making method |
| CN101295802A (en) * | 2007-04-25 | 2008-10-29 | 东莞新能源电子科技有限公司 | Safety lithium ion cell |
| CN101431169A (en) * | 2008-10-29 | 2009-05-13 | 东莞新能源科技有限公司 | Lithium ion cell and cell body |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610828B (en) * | 2011-01-24 | 2017-07-21 | 三星Sdi株式会社 | Secondary cell |
| CN102610828A (en) * | 2011-01-24 | 2012-07-25 | Sb锂摩托有限公司 | Secondary battery |
| CN104685678A (en) * | 2011-10-31 | 2015-06-03 | 波士顿学院董事会 | Hetero-nanostructure materials for use in energy-storage devices and methods of fabricating same |
| CN102719214A (en) * | 2012-06-28 | 2012-10-10 | 东莞市迈科锂离子电池工业节能技术研究院 | Insulating glue for lithium ion batteries and using method of insulating glue |
| CN103268957A (en) * | 2013-05-14 | 2013-08-28 | 曙鹏科技（深圳）有限公司 | Flexible packaging lithium-ion battery |
| CN103268957B (en) * | 2013-05-14 | 2015-10-07 | 曙鹏科技（深圳）有限公司 | Flexible packing lithium ion battery |
| CN103280597A (en) * | 2013-05-31 | 2013-09-04 | 宁德新能源科技有限公司 | Lithium ion battery |
| CN103280597B (en) * | 2013-05-31 | 2017-09-29 | 宁德新能源科技有限公司 | Lithium ion battery |
| CN103545559A (en) * | 2013-10-08 | 2014-01-29 | 宁德新能源科技有限公司 | Laminated type lithium ion battery |
| CN105576280A (en) * | 2014-10-09 | 2016-05-11 | 东莞新能源科技有限公司 | Flexible cell and preparation method thereof |
| CN107768673A (en) * | 2016-08-23 | 2018-03-06 | 宁德新能源科技有限公司 | Modified foam metal, electrode slice and secondary cell |
| JP2018181527A (en) * | 2017-04-07 | 2018-11-15 | トヨタ自動車株式会社 | All-solid battery |
| CN111164800A (en) * | 2017-11-29 | 2020-05-15 | 株式会社杰士汤浅国际 | Electrode plate, electrode assembly and energy storage device |
| CN111656576A (en) * | 2018-03-09 | 2020-09-11 | 松下知识产权经营株式会社 | Positive electrode for secondary battery, positive electrode current collector for secondary battery, and secondary battery |
| CN111656576B (en) * | 2018-03-09 | 2023-07-07 | 松下知识产权经营株式会社 | Positive electrode for secondary battery, positive electrode current collector for secondary battery, and secondary battery |
| CN108428900A (en) * | 2018-03-15 | 2018-08-21 | 重庆市紫建电子有限公司 | A kind of based lithium-ion battery positive plate and preparation method thereof |
| CN108428900B (en) * | 2018-03-15 | 2020-09-01 | 重庆市紫建电子股份有限公司 | Lithium ion battery positive plate and preparation method thereof |
| CN109524606B (en) * | 2018-11-05 | 2022-07-26 | 宁德新能源科技有限公司 | Pole piece, battery cell and battery |
| US11978862B2 (en) | 2018-11-05 | 2024-05-07 | Ningde Amperex Technology Limited | Electrochemical device |
| US11695160B2 (en) | 2018-11-05 | 2023-07-04 | Ningde Amperex Technology Limited | Electrochemical device |
| CN109524606A (en) * | 2018-11-05 | 2019-03-26 | 宁德新能源科技有限公司 | Pole piece, battery core and battery |
| US11616252B2 (en) * | 2019-08-14 | 2023-03-28 | Hyundai Motor Company | Lithium ion secondary battery and manufacturing method of the same |
| WO2021189410A1 (en) * | 2020-03-27 | 2021-09-30 | 宁德新能源科技有限公司 | Pole piece, cell and battery |
| CN114503300A (en) * | 2020-11-20 | 2022-05-13 | 宁德新能源科技有限公司 | Pole piece for improving safety of electrode assembly, electrochemical device comprising same and electronic device comprising same |
| WO2022104698A1 (en) * | 2020-11-20 | 2022-05-27 | 宁德新能源科技有限公司 | Electrode plate for improving safety of electrode assembly, electrochemical device containing same, and electronic device |
| CN114503300B (en) * | 2020-11-20 | 2024-05-28 | 宁德新能源科技有限公司 | Pole piece for improving safety of electrode assembly, electrochemical device and electronic device comprising same |
| CN112670442B (en) * | 2020-12-24 | 2023-09-22 | 珠海冠宇电池股份有限公司 | Positive plate, battery winding core, battery and positive plate preparation method |
| CN112670442A (en) * | 2020-12-24 | 2021-04-16 | 珠海冠宇电池股份有限公司 | Positive plate, battery roll core, battery and positive plate preparation method |
| CN113078282A (en) * | 2021-03-23 | 2021-07-06 | 珠海冠宇电池股份有限公司 | Positive plate and lithium ion battery |
| CN113131097A (en) * | 2021-03-24 | 2021-07-16 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| WO2023216240A1 (en) * | 2022-05-13 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Secondary battery and preparation method therefor, battery module, battery pack, and electric device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101894937A (en) | Lithium ion battery and positive plate thereof | |
| CN113299876B (en) | Pole piece and lithium ion battery | |
| EP3910703A2 (en) | Electrochemical apparatus and electronic apparatus | |
| JP5452202B2 (en) | Lithium ion battery and manufacturing method thereof | |
| CN102569701A (en) | Lithium ion battery and membrane thereof | |
| US20140045008A1 (en) | Large format lithium-ion battery cell with improved saftey against crush and puncture | |
| KR20140071951A (en) | Heat resistant porous membrane, separator for nonaqueous cell, and nonaqueous cell | |
| JP6007447B2 (en) | Secondary battery | |
| US10062889B2 (en) | Lithium ion secondary battery | |
| KR20160112266A (en) | Integrated electrode assembly and Electrochemical device comprising the same | |
| EP3598561B1 (en) | Positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and electric power system | |
| CN109841780A (en) | A kind of lithium ion battery separator and its manufacturing method and the lithium ion battery containing this partition | |
| CN107749489B (en) | High-safety high-energy-density lithium ion battery | |
| WO2021243611A1 (en) | Insulating tape, electrode plate and electrochemical device | |
| JP4815845B2 (en) | Polymer battery | |
| JP2008171575A (en) | Cathode plate for nonaqueous electrolytic solution secondary battery, its manufacturing method, and nonaqueous electrolytic secondary battery using it | |
| CN109167099A (en) | A kind of battery of high safety and preparation method thereof | |
| CN101714656A (en) | Lithium-ion secondary battery | |
| WO2022266894A1 (en) | Electrochemical device and electronic device | |
| JP5241120B2 (en) | Non-aqueous electrolyte battery | |
| CN201562696U (en) | Housing for battery and battery thereof | |
| JP5241119B2 (en) | Non-aqueous electrolyte battery | |
| CN101894971A (en) | Lithium-ion secondary battery | |
| CN103490042A (en) | Lithium ion battery negative pole piece, making method thereof, and lithium ion battery | |
| US20220093907A1 (en) | Secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101124 |