CN214043752U - High-rate stable lithium battery - Google Patents
High-rate stable lithium battery Download PDFInfo
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- CN214043752U CN214043752U CN202023077669.0U CN202023077669U CN214043752U CN 214043752 U CN214043752 U CN 214043752U CN 202023077669 U CN202023077669 U CN 202023077669U CN 214043752 U CN214043752 U CN 214043752U
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- layer
- pole piece
- negative electrode
- conductive adhesive
- positive electrode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a high-magnification stable lithium battery, which comprises a negative electrode shell, insulating rubber, a positive electrode cover, a forming seal ring, a conductor layer, a core body, a negative electrode plate, a diaphragm, a positive electrode plate, a bottom sealing gasket and a negative electrode plate; the negative pole piece is composed of a three-layer structure, specifically, a copper foil layer, a conductive adhesive layer and a ball-milling expanded graphite layer are respectively arranged outside and inside the negative pole piece; the positive pole piece is also composed of a three-layer structure, specifically comprising an outer lithium iron phosphate doped organic polymer layer, a conductive adhesive layer and an aluminum foil layer. The utility model discloses the multiplying power that charges is high, stability is good, antidetonation, antiknock, reliability are high.
Description
Technical Field
The utility model relates to a lithium cell makes technical field, especially relates to a high magnification stable form lithium cell.
Background
The ever-expanding demand for energy throughout the world is one of the major challenges of the 21 st century. The lithium ion battery has the advantages of high energy density, long cycle life, no memory effect, environmental protection and the like, and is widely used as an energy storage battery of most electronic equipment such as smart phones, cameras, notebooks and even hybrid electric vehicles. Graphite has good electrical conductivity and a stable discharge voltage and has been used as an anode in lithium batteries for decades.
Unfortunately, the pure use of original lithium iron phosphate as the positive electrode functional material of lithium ion batteries has several disadvantages: firstly, the diffusion coefficient of lithium ions is low, so that the rate performance of the lithium ion battery is not ideal; secondly, the attenuation is fast in the process of lithium ion intercalation and deintercalation, so that the cycle life of the lithium ion battery is not long; the thermal shock performance is poor, and the battery is easy to explode particularly during high-rate charging; finally, the temperature rise under the unit charging power is large and unsafe.
Therefore, a high-rate stable lithium battery with high charging rate, good stability, shock resistance, explosion resistance and high reliability is needed in the market.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at providing the rate of charging height, stability good, antidetonation, antiknock, high rate stable form lithium cell of reliability.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-rate stable lithium battery comprises a negative electrode shell, insulating rubber, a positive electrode cover, a formed sealing ring, a conductor layer, a core body, a negative electrode plate, a diaphragm, a positive electrode plate, a bottom sealing gasket and a negative electrode plate;
the negative pole piece is composed of a three-layer structure, specifically, a copper foil layer, a conductive adhesive layer and a ball-milling expanded graphite layer are respectively arranged outside and inside the negative pole piece;
the positive pole piece is also composed of a three-layer structure, specifically comprising an outer lithium iron phosphate doped organic polymer layer, a conductive adhesive layer and an aluminum foil layer.
Compared with the prior art, the utility model has the advantages of it is following: (1) the temperature resistance is improved, when 5C/12V overload charging is adopted, the temperature rise is far less than that of a commercial lithium battery, the surface temperature is kept between 100 and 118 ℃, and fire and explosion do not occur; and when the commercial lithium battery is overloaded and charged by 3C/12V, the temperature is raised to 140 ℃ and fire explosion occurs. (2) The high-rate electrical performance indexes of the invention are as follows: the discharge capacities at 5C, 10C, 15C, 20C, and 30C were 100%, 98.2%, 96.5%, 91.0%, and 82.3% respectively in the 1C state, and had good high-rate discharge characteristics. (3) After the 1C charging and 10C discharging overuse cycle is adopted, the capacity is attenuated to 65.2 percent and the attenuation rate is 34.8 percent after 1000 times of cyclic use. (4) The performance of the lithium battery is slightly superior to that of the lithium battery sold in the market in negative parameters such as performance stability, temperature rise and the like through detection of a thermal shock test, a acupuncture test, a short circuit test and an extrusion test. Therefore the utility model discloses a high multiplying power stable form lithium cell has the multiplying power of charging height, good, antidetonation, antiknock, the high characteristic of reliability of stability.
Drawings
FIG. 1 is a block diagram of the present invention;
in the figure: the negative electrode comprises a negative electrode shell 1, insulating rubber 2, a positive electrode cover 3, a forming sealing ring 4, a conductor layer 5, a core body 6, a negative electrode pole piece 7, a diaphragm 8, a positive electrode pole piece 9, a bottom sealing gasket 10 and a negative electrode bottom piece 11.
Detailed Description
Example 1:
as shown in fig. 1, the high-rate stable lithium battery comprises a negative electrode shell 1, insulating rubber 2, a positive electrode cover 3, a molded sealing ring 4, a conductor layer 5, a core body 6, a negative electrode plate 7, a diaphragm 8, a positive electrode plate 9, a bottom sealing gasket 10 and a negative electrode plate 11;
the negative pole piece 7 is composed of a three-layer structure, specifically, a copper foil layer, a conductive adhesive layer and a ball-milling expanded graphite layer are respectively arranged outside and inside;
the positive electrode plate 9 is also composed of a three-layer structure, specifically, a lithium iron phosphate-doped organic polymer layer, a conductive adhesive layer and an aluminum foil layer are respectively arranged outside and inside.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. The utility model provides a high magnification stable form lithium cell which characterized in that: the battery is composed of a negative electrode shell (1), insulating rubber (2), a positive electrode cover (3), a forming sealing ring (4), a conductor layer (5), a core body (6), a negative electrode pole piece (7), a diaphragm (8), a positive electrode pole piece (9), a bottom sealing gasket (10) and a negative electrode bottom piece (11);
the negative pole piece (7) is composed of a three-layer structure, specifically a copper foil layer, a conductive adhesive layer and a ball-milling expanded graphite layer are respectively arranged outside and inside;
the positive pole piece (9) is also composed of a three-layer structure, specifically, a lithium iron phosphate doped organic polymer layer, a conductive adhesive layer and an aluminum foil layer are respectively arranged outside and inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023077669.0U CN214043752U (en) | 2020-12-19 | 2020-12-19 | High-rate stable lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023077669.0U CN214043752U (en) | 2020-12-19 | 2020-12-19 | High-rate stable lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214043752U true CN214043752U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023077669.0U Active CN214043752U (en) | 2020-12-19 | 2020-12-19 | High-rate stable lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214043752U (en) |
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2020
- 2020-12-19 CN CN202023077669.0U patent/CN214043752U/en active Active
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