CN201936955U - Cylindrical lithium battery - Google Patents
Cylindrical lithium battery Download PDFInfo
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- CN201936955U CN201936955U CN2011200086926U CN201120008692U CN201936955U CN 201936955 U CN201936955 U CN 201936955U CN 2011200086926 U CN2011200086926 U CN 2011200086926U CN 201120008692 U CN201120008692 U CN 201120008692U CN 201936955 U CN201936955 U CN 201936955U
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- lithium battery
- electric power
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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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Abstract
The utility model relates to a cylindrical lithium battery comprising a cylindrical casing. The cylindrical lithium battery is characterized in that the bottom of the cylindrical casing is provided with a bottom insulating sheet, and the top of the cylindrical casing is provided with a cover cap forming a positive terminal; a safety valve is arranged below the cover cap; and a top insulating sheet is arranged below the safety valve. The inner part of the cylindrical casing forms a battery containing space in which a mandril is arranged; each of two sides of the mandril is provided with an electric power storage layer in a staking manner, and the electric power storage layer is formed by sequential stacking of a diaphragm layer, a negative electrode layer, a diaphragm layer and a positive electrode layer from outside to inside; negative electrode lugs are distributed between the electric power storage layer and the insulating sheet, positive electrode lugs are distributed between the electric power storage layer and the cover cap, and power-off explosion-proof components are distributed on the positive electrode lugs. Therefore, the cylindrical lithium battery can achieve long circle life and high specific capacity as the negative electrode layer formed based on a hard carbon layer matches with the positive electrode layer formed by lithium iron phosphate; moreover, the use safety of the battery is greatly improved due to the existence of the power off explosion-proof components.
Description
Technical field
The utility model relates to a kind of battery, relates in particular to a kind of cylinder type lithium battery.
Background technology
Ubiquitous lithium ion battery in the market just, the performance of its performance and lithium ion battery material is closely related.Therefore the development course of lithium ion battery is accompanied by the innovation and the breakthrough of battery material, specifically comprises the positive and negative electrode material, electrolyte, and barrier film etc., wherein positive and negative electrode material and electrolyte also are the emphasis of Study on Li-ion batteries using to the having the greatest impact of battery.
Simultaneously, present commercial lithium ion battery major part is a positive pole with cobalt acid lithium material, and graphitized carbon material is a negative pole.Along with the development of information technology, be the continuous miniaturization of portable set of representative with notebook computer, mobile phone etc., intellectuality requires its power supply height ratio capacityization more.In addition, field such as electric automobile requires motive-power battery must have height ratio capacity, low cost and high security.With cobalt acid lithium material is positive pole, and graphitized carbon material is that the lithium ion battery of negative pole can not satisfy the requirement of above-mentioned development.
There are the not high problems of fail safe owing to adopt pure cobalt acid lithium to do anodal lithium ion battery, so select a kind of better positive electrode to be inevitable.LiFePO 4 because of have the specific capacity height, have extended cycle life, Stability Analysis of Structures, abundant raw material, fail safe is good and advantages of environment protection, is considered to have most the new type lithium ion battery positive electrode of application potential.
Hard carbon is meant difficult graphitized carbon, is the RESEARCH OF PYROCARBON of high molecular polymer.Discover that hard carbon material all has characteristics such as specific capacity height, good cycle, cost be low.
Moreover existing lithium ion battery lacks necessary power-off protection assembly, can't promote the security quality of battery.
The utility model content
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of cylinder type lithium battery is provided.
For realizing the purpose of this utility model cylinder type lithium battery, include cylinder blanket, wherein: the bottom of described cylinder blanket is provided with the bottom insulation sheet, and described cylinder blanket top is provided with the block that constitutes positive terminal; Described block is arranged with safety valve; Be distributed with the top insulating trip under the described safety valve; The inner formation of described cylinder blanket battery accommodating space, described battery accommodating is provided with mandrel in the space, and all pile up described mandrel both sides the electric power storage layer; Described electric power storage layer is piled up and is formed by membrane layer, negative electrode layer, membrane layer, anodal layer in regular turn from outside to inside; Be distributed with negative lug between described electric power storage layer and the insulating trip, be distributed with positive pole ear between described electric power storage layer and the block; Be distributed with the explosion-proof assembly of outage on the described positive pole ear.
Further, above-mentioned cylinder type lithium battery wherein, is distributed with sealing ring between described block and the cylinder blanket top.
Further, above-mentioned cylinder type lithium battery, wherein, described membrane layer is three layers of composite diaphragm that Celgard-2300 PP, PE and PP constitute.
Further, above-mentioned cylinder type lithium battery, wherein, described negative electrode layer is a hard carbon layer.
Again further, above-mentioned cylinder type lithium battery, wherein, described anodal layer is the LiFePO 4 layer.
Adopt technical solutions of the utility model, rely on negative electrode layer that hard carbon layer constitutes, match with the anodal layer that LiFePO 4 constitutes, can realize having extended cycle life, specific capacity height, Stability Analysis of Structures, raw material resources are abundant, fail safe is good, free from environmental pollution secondary lithium battery.Thus, the cycle life with respect to LiFePO 4 or independent half electrode of hard carbon is significantly improved.And,, greatly improved the safety in utilization of battery owing to the existence of the explosion-proof assembly of outage.
The purpose of this utility model, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram of this cylinder type lithium battery.
The implication of each Reference numeral is as follows among the figure:
1 cylinder blanket, 2 bottom insulation sheets
3 blocks, 4 safety valves
5 top insulating trips, 6 mandrels
7 electric power storage layers, 8 membrane layer
9 negative electrode layers, 10 anodal layers
11 negative lug, 12 positive pole ears
Explosion-proof assembly 14 sealing rings of 13 outages
Embodiment
Cylinder type lithium battery as shown in Figure 1 includes cylinder blanket 1, and its unusual part is: the bottom of the cylinder blanket 1 that the utility model adopted is provided with bottom insulation sheet 2.Corresponding with it is that cylinder blanket 1 top is provided with the block 3 that constitutes positive terminal.Specifically, block 3 is arranged with safety valve 4, and safety valve is distributed with top insulating trip 54 times.
Simultaneously, cylinder blanket 1 inner formation battery accommodating space is provided with mandrel 6 in the battery accommodating space, and all pile up mandrel 6 both sides electric power storage layer 7.Consider the smooth and easy work of battery, the electric power storage layer 7 that the utility model adopted is piled up and is formed by membrane layer 8, negative electrode layer 9, membrane layer 8, anodal layer 10 in regular turn from outside to inside.And, be distributed with negative lug 11 between electric power storage layer 7 and the insulating trip, be distributed with positive pole ear 12 between described electric power storage layer 7 and the block 3.Moreover from angle safe in utilization, the utility model is distributed with the explosion-proof assembly 13 of outage on positive pole ear 12.
In conjunction with the utility model one preferred implementation, consider the useful life that can better prolong battery, the utility model is distributed with sealing ring 14 between block 3 and cylinder blanket 1 top.Like this, can effectively prevent outside steam or other polluter impouring inside batteries.
Further, in order to improve self antijamming capability of battery, can carry out the most effectively insulation blocking-up with anodal layer 10 by anticathode layer 9 simultaneously, unnecessary short circuit or punch-through can not appear, promote the resistance to overturning of battery, the membrane layer 8 that the utility model adopted is three layers of composite diaphragm of Celgard-2300 PP and PE and PP formation.
And by cycle life and the specific capacity finding after the multiple comparison test, consider to improve entire cell, the negative electrode layer 9 that the utility model adopted is hard carbon layer.Corresponding with it is that anodal layer 10 is the LiFePO 4 layer.The flow applications that can also help like this, electric energy.
By above-mentioned character express also in conjunction with the accompanying drawings as can be seen, after adopting the utility model, rely on negative electrode layer that hard carbon layer constitutes, match with the anodal layer that LiFePO 4 constitutes, can realize having extended cycle life, specific capacity height, Stability Analysis of Structures, raw material resources are abundant, fail safe is good, free from environmental pollution secondary lithium battery.Thus, the cycle life with respect to LiFePO 4 or independent half electrode of hard carbon is significantly improved.And,, greatly improved the safety in utilization of battery owing to the existence of the explosion-proof assembly of outage.
Certainly, more than only be concrete exemplary applications of the present utility model, protection range of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (5)
1. cylinder type lithium battery includes cylinder blanket, it is characterized in that: the bottom of described cylinder blanket is provided with the bottom insulation sheet, and described cylinder blanket top is provided with the block that constitutes positive terminal; Described block is arranged with safety valve; Be distributed with the top insulating trip under the described safety valve; The inner formation of described cylinder blanket battery accommodating space, described battery accommodating is provided with mandrel in the space, and all pile up described mandrel both sides the electric power storage layer; Described electric power storage layer is piled up and is formed by membrane layer, negative electrode layer, membrane layer, anodal layer in regular turn from outside to inside; Be distributed with negative lug between described electric power storage layer and the insulating trip, be distributed with positive pole ear between described electric power storage layer and the block; Be distributed with the explosion-proof assembly of outage on the described positive pole ear.
2. cylinder type lithium battery according to claim 1 is characterized in that: be distributed with sealing ring between described block and the cylinder blanket top.
3. cylinder type lithium battery according to claim 1 is characterized in that: described membrane layer is three layers of composite diaphragm that Celgard-2300 PP, PE and PP constitute.
4. cylinder type lithium battery according to claim 1 is characterized in that: described negative electrode layer is a hard carbon layer.
5. cylinder type lithium battery according to claim 1 is characterized in that: described anodal layer is the LiFePO 4 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200086926U CN201936955U (en) | 2011-01-13 | 2011-01-13 | Cylindrical lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200086926U CN201936955U (en) | 2011-01-13 | 2011-01-13 | Cylindrical lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936955U true CN201936955U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200086926U Expired - Fee Related CN201936955U (en) | 2011-01-13 | 2011-01-13 | Cylindrical lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201936955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593417A (en) * | 2011-01-13 | 2012-07-18 | 苏州能斯特新能源有限公司 | Cylindrical lithium battery |
| CN109786618A (en) * | 2019-02-18 | 2019-05-21 | 德朗能（张家港）动力电池有限公司 | A kind of high power environment-friendly type ferric phosphate lithium cell and preparation method thereof |
-
2011
- 2011-01-13 CN CN2011200086926U patent/CN201936955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593417A (en) * | 2011-01-13 | 2012-07-18 | 苏州能斯特新能源有限公司 | Cylindrical lithium battery |
| CN109786618A (en) * | 2019-02-18 | 2019-05-21 | 德朗能（张家港）动力电池有限公司 | A kind of high power environment-friendly type ferric phosphate lithium cell and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zou Jinfang Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Nernst New Energy (Suzhou) Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20140113 |