CN205790144U - A kind of cylinder type lithium battery - Google Patents
A kind of cylinder type lithium battery Download PDFInfo
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- CN205790144U CN205790144U CN201620093802.6U CN201620093802U CN205790144U CN 205790144 U CN205790144 U CN 205790144U CN 201620093802 U CN201620093802 U CN 201620093802U CN 205790144 U CN205790144 U CN 205790144U
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- cylinder blanket
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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 discloses a kind of cylinder type lithium battery, include cylinder blanket, be provided with bottom insulation sheet bottom it, its top is provided with the block constituting positive terminal；The lower section of block is disposed with relief valve and top insulating trip in the axial direction of cylinder blanket；Cylindrical housing interior constitutes battery and accommodates space, and its center is provided with mandrel in the axial direction of cylinder blanket；Mandrel both sides are all stacked with electric power storage layer；Negative lug is distributed between electric power storage layer and bottom insulation sheet, between electric power storage layer and block, positive pole ear is distributed；First power-off proof assembl is distributed on positive pole ear, second power-off proof assembl between block and cylinder blanket top, is distributed；Described first proof assembl, the second proof assembl are screw thread electromagnetic valve；When inside battery or short-circuited outside, the air pressure rising of inside battery makes the shell fragment in described screw thread electromagnetic valve be backed down, so that pilot hole is opened, the gases at high pressure of inside battery are discharged.
Description
Technical field
This utility model relates to a kind of lithium battery, particularly relates to a kind of cylinder type lithium battery.
Background technology
From the point of view of the lithium ion battery the most generally existed, its performance and lithium ion battery material
Performance is closely related.Therefore the development course of lithium ion battery is along with the innovation of battery material and breakthrough, tool
Body includes positive and negative electrode material, electrolyte, barrier film etc., and wherein positive and negative electrode material and electrolyte are to battery
Impact maximum, barrier film is also very big for the impact of battery security, is also the emphasis of Study on Li-ion batteries.
Meanwhile, the lithium ion battery major part of current commercialization is with cobalt acid lithium material as positive pole, and graphitized carbon material is
Negative pole.Along with the development of information technology, the portable set with notebook computer, mobile phone etc. as representative
It is increasingly miniaturized, intelligent, it is desirable to its power supply more high specific energy quantifies.Additionally, the fields such as electric automobile are wanted
Demanded driving force type battery must have high-energy-density, low cost and high security.With cobalt acid lithium material as positive pole,
Graphitized carbon material is that the lithium ion battery of negative pole can not meet require that of above-mentioned development.
There are the more high problems of safety in the lithium ion battery owing to using pure cobalt acid lithium to do positive pole, so
It is inevitable for selecting a kind of more excellent positive electrode.Nickel cobalt aluminum ternary material is because having specific capacity height, following
Ring life-span length, Stability Analysis of Structures, abundant raw material, safety be good and advantages of environment protection is it is considered to be have most
The Olivine-type Cathode Material in Li-ion Batteries of application potential.
Research finds, its energy density of silicon-carbon improves 80% than existing negative material, completely can be with commercialization
Silicon-carbon composite cathode material, this materials application, in electric automobile field, is expected to big for the energy density of battery
Amplitude promotes, and electric automobile course continuation mileage is expected to rise to more than 400km.
Furthermore, existing lithium ion battery lacks the power-off protection assembly of necessity, it is impossible to promote the safety of battery
Quality.
Utility model content
Technical problem underlying to be solved of the present utility model is to provide a kind of cylinder type lithium battery, and it is arranged
There is power-off proof assembl, it is possible to the gentle pressure of heat that electric power storage layer produces gone out in time, reduce lithium battery and break
The probability of discharge-induced explosion.
In order to solve above-mentioned technical problem, this utility model provides a kind of cylinder type lithium battery, includes
Cylinder blanket, the bottom of described cylinder blanket is provided with bottom insulation sheet, and described cylinder blanket top sets
There is the block constituting positive terminal；The lower section of described block is disposed with peace in the axial direction of cylinder blanket
Full valve and top insulating trip；Described cylindrical housing interior constitutes battery and accommodates space, and described battery accommodates sky
Between center in the axial direction of cylinder blanket, be provided with mandrel, described mandrel both sides are all stacked with electric power storage layer；
Described electric power storage layer is the most sequentially formed by membrane layer, negative electrode layer, membrane layer, anode layer stacking；Described
Negative lug is distributed between electric power storage layer and bottom insulation sheet, between described electric power storage layer and block, positive pole is distributed
Lug；First power-off proof assembl, described block and cylinder blanket top are distributed on described positive pole ear
Between second power-off proof assembl is distributed；
Described first proof assembl, the second proof assembl are screw thread electromagnetic valve；When inside battery or outside generation
During short circuit, the air pressure rising of inside battery makes the shell fragment in described screw thread electromagnetic valve be backed down, so that
Pilot hole is opened, and the gases at high pressure of inside battery are discharged；After the air pressure of inside battery declines, described bullet
Sheet is again airtight by pilot hole under the effect of spring restoring force.
In a preferred embodiment: three layers of composite diaphragm that described membrane layer is PP, PE to be constituted with PP, its
Surface also has a PVDF coat.
In a preferred embodiment: described negative electrode layer is silicon carbon layer.
In a preferred embodiment: described anode layer is nickel cobalt aluminum ternary material layer.
In a preferred embodiment: described first proof assembl, the second proof assembl are screw thread electromagnetic valve.
Compared to prior art, the technical solution of the utility model possesses following beneficial effect:
1. a kind of cylinder type lithium battery that this utility model provides, owing to employing screw thread electromagnetic valve as explosion-proof
Assembly, when inside battery or short-circuited outside, the air pressure of inside battery raises and makes in screw thread electromagnetic valve
Shell fragment backed down by gases at high pressure, the pilot hole in screw thread electromagnetic valve is opened so that gases at high pressure are discharged.
After gas is discharged, the air pressure of inside battery declines, and the shell fragment in screw thread electromagnetic valve is in the effect of spring restoring force
Under again by pilot hole close.So that this lithium battery can be accomplished explosion-proof, add the safety of lithium battery
Property.
2. a kind of cylinder type lithium battery that this utility model provides, uses silicon carbon layer as negative material, uses
Nickel cobalt aluminum ternary material layer is as positive electrode, it is possible to achieve cell energy density reaches 220WH/KG's
Requirement, increases about 20% than energy density in the market, uses positive pole nickel cobalt aluminum and silicon-carbon cathode whole simultaneously
Body improves battery cell high power capacity, it is achieved have extended cycle life, and specific capacity is high, add the pottery of application type every with
The utilization of power-off proof assembl, the usage safety performance for battery has done basic guarantee, for fire at present
The new-energy automobile market of quick-fried growth provides preferable power source.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of cylinder type lithium battery in this utility model preferred embodiment.
Detailed description of the invention
Hereafter by the drawings and specific embodiments, this utility model is described further.
With reference to Fig. 1, a kind of cylinder type lithium battery, include cylinder blanket 1；Described cylinder blanket 1
Bottom is provided with bottom insulation sheet 2, and described cylinder blanket 1 top is provided with the block 3 constituting positive terminal；Described
The lower section of block 3 is disposed with relief valve 4 and top insulating trip 5 in the axial direction of cylinder blanket 1；
Described cylinder blanket 1 Inner Constitution battery accommodates space, and described battery accommodates the center in space along cylinder
Being provided with mandrel 6 in the axial direction of shape shell, described mandrel 6 both sides are all stacked with electric power storage layer 7；Described electric power storage layer
The most sequentially formed by membrane layer 71, negative electrode layer 72, membrane layer 71, anode layer 73 stacking；Described
Negative lug is distributed between electric power storage layer 7 and bottom insulation sheet 2, divides between described electric power storage layer 7 and block 3
It is furnished with positive pole ear 8；First power-off proof assembl 81, described block 3 are distributed on described positive pole ear 8
And second power-off proof assembl 31 is distributed between cylinder blanket 1 top.
In the present embodiment, described first power-off proof assembl 81 and the second power-off proof assembl 31 are spiral
Electromagnetic valve.When inside battery or short-circuited outside, the air pressure of inside battery raises and makes screw thread electromagnetic valve
In shell fragment backed down by gases at high pressure, the pilot hole in screw thread electromagnetic valve is opened so that gases at high pressure are arranged
Go out.After gas is discharged, the air pressure of inside battery declines, and the shell fragment in screw thread electromagnetic valve is at spring restoring force
Again pilot hole is closed under effect.So that this lithium battery can be accomplished explosion-proof, add lithium battery
Safety.
In the present embodiment, described membrane layer is three layers of composite diaphragm that PP, PE are constituted with PP, and its surface is also
There is a PVDF coat.
Described negative electrode layer is silicon carbon layer, and described anode layer is nickel cobalt aluminum ternary material layer.Such that it is able to realize single
Body battery energy density reaches the requirement of 220WH/KG, increases about 20% than energy density in the market,
Use positive pole nickel cobalt aluminum and silicon-carbon cathode entirety to improve battery cell high power capacity, it is achieved to have extended cycle life simultaneously,
Specific capacity is high, add the pottery of application type every the utilization with power-off proof assembl, for the use safety of battery
Performance has done basic guarantee, provides preferable power for the most fiery new-energy automobile market increased
Source.
The above, only this utility model preferably detailed description of the invention, but protection model of the present utility model
Enclose and be not limited thereto, the technology model that any those familiar with the art discloses at this utility model
In enclosing, the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Cause
This, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (4)
1. a cylinder type lithium battery, includes cylinder blanket, it is characterised in that: the bottom of described cylinder blanket is provided with bottom insulation sheet, and described cylinder blanket top is provided with the block constituting positive terminal；The lower section of described block is disposed with relief valve and top insulating trip in the axial direction of cylinder blanket；Described cylindrical housing interior constitutes battery and accommodates space, and described battery accommodates the center in space and is provided with mandrel in the axial direction of cylinder blanket, and described mandrel both sides are all stacked with electric power storage layer；Described electric power storage layer is the most sequentially formed by membrane layer, negative electrode layer, membrane layer, anode layer stacking；Negative lug is distributed between described electric power storage layer and bottom insulation sheet, between described electric power storage layer and block, positive pole ear is distributed；First power-off proof assembl is distributed on described positive pole ear, second power-off proof assembl between described block and cylinder blanket top, is distributed；
Described first power-off proof assembl, the second power-off proof assembl are screw thread electromagnetic valve；When inside battery or short-circuited outside, the air pressure rising of inside battery makes the shell fragment in described screw thread electromagnetic valve be backed down, so that pilot hole is opened, the gases at high pressure of inside battery are discharged；After the air pressure of inside battery declines, described shell fragment is again airtight by pilot hole under the effect of spring restoring force.
A kind of cylinder type lithium battery, it is characterised in that: described membrane layer is three layers of composite diaphragm that PP, PE are constituted with PP, and its surface also has a PVDF coat.
A kind of cylinder type lithium battery, it is characterised in that: described negative electrode layer is silicon carbon layer.
A kind of cylinder type lithium battery, it is characterised in that: described anode layer is nickel cobalt aluminum ternary material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620093802.6U CN205790144U (en) | 2016-01-29 | 2016-01-29 | A kind of cylinder type lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620093802.6U CN205790144U (en) | 2016-01-29 | 2016-01-29 | A kind of cylinder type lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205790144U true CN205790144U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620093802.6U Active CN205790144U (en) | 2016-01-29 | 2016-01-29 | A kind of cylinder type lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205790144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987814A (en) * | 2018-07-28 | 2018-12-11 | 江西睿达新能源科技有限公司 | A kind of lithium ion battery nickel-cobalt-manganternary ternary anode material |
| CN114981907A (en) * | 2020-01-09 | 2022-08-30 | 株式会社丰田自动织机 | Electricity storage device |
-
2016
- 2016-01-29 CN CN201620093802.6U patent/CN205790144U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987814A (en) * | 2018-07-28 | 2018-12-11 | 江西睿达新能源科技有限公司 | A kind of lithium ion battery nickel-cobalt-manganternary ternary anode material |
| CN114981907A (en) * | 2020-01-09 | 2022-08-30 | 株式会社丰田自动织机 | Electricity storage device |
| CN114981907B (en) * | 2020-01-09 | 2023-10-10 | 株式会社丰田自动织机 | Power storage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20181217 Granted publication date: 20161207 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20211217 Granted publication date: 20161207 |