CN101615698B - Lithium ion power low temperature cell - Google Patents
Lithium ion power low temperature cell Download PDFInfo
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- CN101615698B CN101615698B CN2009100632617A CN200910063261A CN101615698B CN 101615698 B CN101615698 B CN 101615698B CN 2009100632617 A CN2009100632617 A CN 2009100632617A CN 200910063261 A CN200910063261 A CN 200910063261A CN 101615698 B CN101615698 B CN 101615698B
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- low temperature
- lithium ion
- electrolyte
- ion power
- binding agent
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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
Abstract
A lithium ion power low temperature cell comprises a tab (1), an anode plate (2), a cathode plate (4), a diaphragm (3), electrolyte (6) and an aluminum plastic die (5), and the invention adopts special proportioning and structure in the anode plate, the cathode plate and the electrolyte. The lithium ion power low temperature cell of the invention overcomes the defects that conventional products only can discharge under the environment of minus 20 DEG C to 60 DEG C, and has short discharging time or incapability of discharging under the condition of below minus 20 DEG C; the invention features stable performance, high energy of volume ratio, good safety and can satisfy high power discharging; the low temperature environment can satisfy normal work under the condition of minus 40 DEG C, and can discharge more than or equal to 70% of initial volume.
Description
Technical field
The present invention relates to a kind of lithium ion power low temperature cell.
Background technology
The world today is because of environmental protection and requirements of saving energy, and the energy of seeking high efficiency and environmental protection is more and more urgent, seeks the inexorable trend that novel power source becomes social development and scientific progress.The electrokinetic cell of current use is mainly lead-acid battery, Ni-MH battery, lithium ion battery.And lithium ion battery becomes the ideal source of electric motor car because of characteristics such as its specific power height, cycle life are long.
The lithium ion battery of prior art extensively adopts positive and negative electrode film, barrier film, assembles by coiling, lamination technology, adds liquid electrolyte then.The battery of producing, it is little to have an energy density height, output voltage height, self discharge, and characteristics such as cycle performance is superior, can satisfy the needs of existing market substantially.Conventional product can satisfy substantially-discharge of 20-60 ℃ environment, to discharge but be lower than under-20 ℃ the temperature conditions, and the situation that discharge time is short or can't discharge can appear, have a strong impact on the use of electrical appliance.
Summary of the invention
The open polymer lithium ion power cell low temperature series of the present invention, the manufacture craft that employing is conventional and the material system of low temperature are finished the making of lithium ion power low temperature cell.
The present invention is achieved through the following technical solutions: lithium ion low temperature electrokinetic cell, and it comprises lug 1, positive plate 2, negative plate 4, barrier film 3, electrolyte 6, aluminum plastic film 5,
It is characterized in that in positive plate: positive plate thickness is 80-130um, and positive electrode active materials is LiMn2O4 or LiFePO4, and binding agent is a Kynoar; Conductive agent is an acetylene black; Positive active material: binding agent: the percentage by weight of conductive agent is 80-90%: 5-10%: 5-10%;
Described in negative plate: negative plate thickness is 50-100um, and negative active core-shell material is an electrographite, and binding agent is an acrylate adhesive; Conductive agent is an acetylene black; Negative electrode active material: binding agent: the percentage by weight of conductive agent is 90-95%: 1-5%: 1-5%;
Described in electrolyte: electrolyte adopts organic mixed solution of the lithium salts of 1mol/L, lithium salts adopts lithium hexafluoro phosphate, and organic solvent is an ethylene carbonate, propene carbonate, methyl ethyl carbonate fat is formulated, ethylene carbonate: propene carbonate: the volume ratio of methyl ethyl carbonate fat is 1: 1: 1.
In technique scheme, described battery adopts the multipole ear structure of multireel core.
Lithium ion low temperature electrokinetic cell of the present invention has following advantage: properties of product are stable, volumetric specific energy is high, fail safe good, and normal temperature environment can satisfy high power discharge; Low temperature environment can satisfy under the condition of temperature-40 ℃ also can work normally, can emit initial capacity 〉=70%.
Description of drawings
Fig. 1 is lithium ion power low temperature cell of the present invention and the discharge curve comparison diagram of conventional batteries under-40 ℃ of conditions.
Fig. 2 is the contour structures schematic diagram of lithium ion power low temperature cell of the present invention.
Fig. 3 is a lithium ion power low temperature cell structural representation of the present invention.
Embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not constitute limitation of the invention, only do for example.Simultaneously by illustrating that advantage of the present invention will become clear more and understanding easily.
Consult accompanying drawing as can be known: lithium ion low temperature electrokinetic cell of the present invention, it comprises lug 1, positive plate 2, negative plate 4, barrier film 3, electrolyte 6, aluminum plastic film 5,
In positive plate: positive plate thickness is 80-130um, and positive electrode active materials is LiMn2O4 or LiFePO4, and binding agent is a Kynoar; Conductive agent is an acetylene black; Positive active material: binding agent: the percentage by weight of conductive agent is 80-90%: 5-10%: 5-10%; Proportionally the pole piece of Zhi Zuoing can reduce ion and conduct distance in solid phase, increases electric conductivity, thereby guarantees the low temperature performance and the heavy-current discharge performance of battery;
In negative plate: negative plate thickness is 50-100um, and negative active core-shell material is an electrographite, and binding agent is an acrylate adhesive; Conductive agent is an acetylene black; Negative electrode active material: binding agent: the percentage by weight of conductive agent is 90-95%: 1-5%: 1-5%; Proportionally the pole piece of Zhi Zuoing can reduce ion and conduct distance in solid phase, increases electric conductivity, thereby guarantees the low temperature performance and the heavy-current discharge performance of battery;
In electrolyte: electrolyte adopts organic mixed solution of the lithium salts of 1mol/L, lithium salts adopts lithium hexafluoro phosphate, and organic solvent is an ethylene carbonate, propene carbonate, methyl ethyl carbonate fat is formulated, ethylene carbonate: propene carbonate: the volume ratio of methyl ethyl carbonate fat is 1: 1: 1.The conductivity of the electrolyte that had both guaranteed, battery can heavy-current discharge; Can guarantee that again battery can work under the ultralow temperature state; The GB requirement is satisfied in fail safe.
Battery adopts the multipole ear structure of multireel core (as Fig. 2, shown in Figure 3).Both reduce the internal resistance of battery, strengthened the heat sinking function of lug again, can guarantee the discharge of big electric current of battery and ultra-low temperature surroundings.
Positive/negative plate adopts conventional manufacture craft to make in the present invention; Electrolyte mining height conductivity low-temperature electrolyte is realized by series-parallel assembling mode.The part of other not specified (NS) is prior art.
Detect by experiment: lithium ion low temperature electrokinetic cell properties of product of the present invention are stable, volumetric specific energy is high, fail safe good, and normal temperature environment can satisfy high power discharge; Low temperature environment can satisfy under the condition of temperature-40 ℃ also can work normally, can emit initial capacity 〉=70% (as shown in Figure 1, a represents existing battery discharge curve among the figure, and b represents battery discharge curve of the present invention).
Need to prove: to those of ordinary skill in the art, can also make some changes or distortion to the present invention under the prerequisite that does not change the principle of the invention, this belongs to protection scope of the present invention equally.
Claims (2)
1. lithium ion power low temperature cell, it comprises lug (1), positive plate (2), negative plate (4), barrier film (3), electrolyte (6), aluminum plastic film (5),
It is characterized in that in positive plate: positive plate thickness is 80-130 μ m, and positive electrode active materials is LiMn2O4 or LiFePO4, and binding agent is a Kynoar; Conductive agent is an acetylene black; Positive active material: binding agent: the percentage by weight of conductive agent is 80-90%: 5-10%: 5-10%;
In described negative plate: negative plate thickness is 50-100 μ m, and negative active core-shell material is an electrographite, and binding agent is an acrylate adhesive; Conductive agent is an acetylene black; Negative electrode active material: binding agent: the percentage by weight of conductive agent is 90-95%: 1-5%: 1-5%;
In described electrolyte: electrolyte adopts organic mixed solution of the lithium salts of 1mol/L, lithium salts adopts lithium hexafluoro phosphate, and organic solvent is an ethylene carbonate, propene carbonate, methyl ethyl carbonate is formulated, ethylene carbonate: propene carbonate: the volume ratio of methyl ethyl carbonate is 1: 1: 1.
2. lithium ion power low temperature cell according to claim 1 is characterized in that described battery adopts the multipole ear structure of multireel core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100632617A CN101615698B (en) | 2009-07-21 | 2009-07-21 | Lithium ion power low temperature cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100632617A CN101615698B (en) | 2009-07-21 | 2009-07-21 | Lithium ion power low temperature cell |
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| Publication Number | Publication Date |
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| CN101615698A CN101615698A (en) | 2009-12-30 |
| CN101615698B true CN101615698B (en) | 2011-05-18 |
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| CN2009100632617A Active CN101615698B (en) | 2009-07-21 | 2009-07-21 | Lithium ion power low temperature cell |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106340679A (en) * | 2016-10-27 | 2017-01-18 | 惠州亿纬锂能股份有限公司 | Preparation method of lithium-manganese dioxide battery |
| CN111224102A (en) * | 2020-01-10 | 2020-06-02 | 江西远东电池有限公司 | Preparation method of low-temperature battery |
| CN112889181B (en) * | 2020-01-20 | 2022-06-17 | 宁德新能源科技有限公司 | Electrode assembly and battery |
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Effective date of registration: 20180621 Address after: 431614 Jiangxu Road, Hanchuan Economic Development Zone, Xiaogan City, Hubei province (opposite to new Dongfeng primary school) Patentee after: Hubei central energy Co., Ltd. Address before: 430040 Wuhan City, Hubei Province, East and West Lake Wu Jiashan nine ditch small and medium enterprises city opposite Patentee before: Wuhan Zhongju Energy Technology Co., Ltd. |
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