CN205564860U - Maintainable's cylindrical lithium -ion battery - Google Patents
Maintainable's cylindrical lithium -ion battery Download PDFInfo
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- CN205564860U CN205564860U CN201620183769.6U CN201620183769U CN205564860U CN 205564860 U CN205564860 U CN 205564860U CN 201620183769 U CN201620183769 U CN 201620183769U CN 205564860 U CN205564860 U CN 205564860U
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- battery
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- cylindrical lithium
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- explosion
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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 provides a maintainable's cylindrical lithium -ion battery, including lithium cell cylindrical shell, block and interior battery positive pole, diaphragm, negative pole, electrolyte. Be equipped with round hole, explosion -proof valve, two seal valve structures on the circular block, the round hole is used for fixed utmost point post, explosion -proof valve be used for preventing internal pressure or temperature reach preset standard time, when inside gaseous accumulation is too much, explosion -proof valve will be opened, the get under way release prevents that the battery from taking place deformation and leading to the casing to burst, the seal valve structure is to interior sealing bolt, sealing washer and the polymer rubber ring of including in proper order outside from, the utility model has the advantages of mainly lie in having maintainable and performance restoration function, promptly: can be in good time to the gaseous emission in the lithium cell, the interface in the battery is restoreed and is changed at any time old electrolyte, extension lithium cell cycle life reduces the frequency that waste battery changed simultaneously, reduces the wasting of resources.
Description
Technical field
This utility model relates to field of lithium ion battery, more specifically, relates to a kind of maintainable circle
Column-shaped lithium ion battery.
Background technology
Along with the epoch of electric automobile the most quietly arrive, countries in the world government and each big automobile under trend of the times
Company is all in the application actively promoting Development of EV technology.The core of electric automobile is exactly battery, existing
Mainly lithium ion battery in some battery systems, in it is actually used, by organic carbonate solvents,
And the electrolyte of functional additive composition is first and in follow-up normal battery charge and discharge process,
Being continuously generated and destroying along with SEI film, along with accumulation in the carrying out of charge and discharge cycles, battery
Amount of gas gets more and more, and causes inner pressure of battery to rise, brings hidden danger to the safety of battery.
Along with the increase of volume, the gathering of energy, using environment to become severe, the battery of sealing is because of impaired
Probability that aerogenesis sets off an explosion and the extent of injury that blast causes also are increasing, simultaneously battery use time
Between the longest, the gas that battery endogenous cause of ill electrolyte decomposition causes can get more and more, electrolyte content reduce, with
The unstable SEI film thickness of Shi Shengcheng increases, and the internal resistance of cell all can be caused to increase, affect cycle life.
It is thus desirable to develop the battery technology of a kind of long circulation life that can extend lithium ion battery service life.
Two of capacity of lithium ion battery decay main reason is that: one is because of aerogenesis and interface side reaction
The growth of the interface impedance caused；Another is that long-time circulation lower interface side reaction consumption electrolyte causes
Its amount reduces the most dry.In the previous case, interface impedance is mainly covered electrode surface by SEI layer
Deposition causes.Based on this, need to find a kind of effective method to reduce the thickness of electrode surface SEI film.
SEI layer is by alkyl lithium carbonates, lithium carbonate, lithium fluoride etc..Some in these materials can be by some
Organic solvent is dissolved.
Utility model content
The problem existed for above-mentioned prior art lithium ion battery, this utility model provides one to tie up
The cylindrical lithium battery protected, the gas in lithium battery can be discharged, carries out the interface in battery by it
Repair and old electrolyte is replaced at any time.
In order to solve these problems in currently available technology, the technical scheme that this utility model provides is:
A kind of maintainable cylindrical lithium ion battery, including cylindrical housings, block and battery core, block
Being located at described cylindrical housings two ends, battery core is encapsulated in described cylindrical shell, battery core include positive pole,
Barrier film, negative pole, electrolyte, it is characterised in that:
Described block is provided with circular hole, explosion-proof valve, at least one seal valve structure, and described circular hole is for solid
Determine pole, when explosion-proof valve is used for preventing internal pressure or temperature from reaching preset standard, gas build-up inside
Too much, explosion-proof valve will be opened, and proceed by release；Described seal valve structure includes sealing bolt and sealing
Circle, the block hole coordinated with described sealing bolt being also located in block；Seal valve structure can be to lithium
Gas discharge in battery, the interface in battery is repaired and is replaced old electrolyte at any time.
As preferably, being provided with annular brace step in described block hole, annular brace step is by being prone to shape
The macromolecular material become prepares, such as macromolecule silica gel.
Seal valve structure in the technical program contains detachable block, for ease of the unlatching of sealing bolt,
Typically do not use the friction tight connected modes such as interference fit, accordingly, it is preferred that sealing bolt and block hole
Pass through threaded engagement.
As preferably, the outer wall of described sealing bolt is provided with spacing with what described annular brace step coordinated
Projection, is provided with sealing ring as sealing ring between described annular brace step and spacing preiection.
As preferably, the end face of described sealing bolt is provided with the interior hex slot for opening or many chamfered grooves.
For preventing the improper of lithium battery from opening, misoperation is susceptible to security incident, and this utility model seals
The end face of bolt offers interior hex slot or many chamfered grooves, needs special instrument just can open, and can promote maintenance
During operation safety.
Described explosion-proof valve is to be welded in end cap by the foil of prefabricated indentation to constitute, and relief valve pressure release value exists
Between 1-10Mpa.
A kind of maintainable cylindrical lithium ion battery, is preferably provided with two seal valve structures in block.
Preferably, described battery positive electrode active material can be LiFePO4, cobalt acid lithium, LiMn2O4, nickel cobalt
LiMn2O4s etc., battery cathode active substance can be Delanium, native graphite, lithium titanate etc..
Preferably, the thickness of described barrier film is 20-40um.
Preferably, described electrolyte by hexafluorophosphoric acid lithium salts and organic carbonate solvents and functional adds
Add agent composition.
Compared with prior art, the beneficial effects of the utility model are: having can maintenance function: can fit
The lithium battery electrolytes that Shi Genghuan is fresh, extends lithium battery cycle life, reduces the frequency that old and useless battery is changed
Rate, reduces the wasting of resources.Simple in construction simultaneously, makes and attended operation is convenient, low cost.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment.
Fig. 1 is the schematic diagram of this utility model embodiment 1.
Fig. 2 is the structure structural map of this utility model embodiment 1.
Wherein, 1 is cylindrical shell, and 2 is block, and 3 is pole, and 4 is seal valve structure, and 5 for sealing
Bolt, 51 is nut, and 52 is screw rod, and 6 is sealing ring, and 7 is block hole, and 8 is explosion-proof valve.
Detailed description of the invention
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiments are
For illustrating that this utility model is not limited to limit scope of the present utility model.The enforcement used in embodiment
Condition can do adjustment further according to the condition of concrete producer, not marked implementation condition usually routine
Condition in experiment.
Introduce and general introduction
This utility model by way of example rather than provides the mode of restriction and illustrates.It should be noted that
" one " or " a kind of " embodiment described in present disclosure is not necessarily referring to same specific embodiment party
Formula, and refer at least a kind of.
Of the present utility model various aspects are described below.But, those of skill in the art are shown
And be clear to, this utility model can be implemented according to the most some or all of aspects of the present utility model.For
For the sake of explanation, provide concrete numbering, material and configuration herein, enable one to thoroughly understand this
Utility model.But, for those of skill in the art it would be apparent that this utility model without
Concrete details is needed to implement.In other examples, omit for not making this utility model obscure or letter
Change well-known feature.
Various operations are described successively as multiple discrete steps, and with most helpful in understanding this
The mode of utility model illustrates；But, in-order description should not being construed as to imply that, these operations must
So depend on order.
According to the reactant of type species, various embodiment will be described.For those skilled in the art
Member is it would be apparent that this utility model can use any number of different types of reactant to come in fact
Execute, and be more than those reactants provided for the purpose of illustration and here.Additionally, also will be apparent to
, this utility model is not limited to any specific mixing example.
Embodiment 1
1 and 2 pair of this utility model can safeguard that cylindrical lithium battery is made to retouch the most in detail below in conjunction with the accompanying drawings
State.
A kind of maintainable cylindrical lithium ion battery, including cylindrical housings 1, block
2 and battery core, block 2 is located at cylindrical housings 1 two ends, and battery core is encapsulated in described circular cylindrical shell body,
Battery core includes that positive pole, barrier film, negative pole, electrolyte, described block 2 are provided with circular hole, explosion-proof valve, extremely
A few seal valve structure 4, circular hole is used for fixing pole 3, and explosion-proof valve is used for preventing internal pressure or temperature
When degree reaches preset standard, gas build-up inside is too much, and explosion-proof valve will be opened, and proceed by release；
Described seal valve structure 4 includes sealing bolt 5 and sealing ring 6, and be also located in block is close with described
The block hole 7 that envelope bolt 5 coordinates；Gas in lithium battery can be discharged by seal valve structure 4, battery
Interior interface is repaired and is replaced old electrolyte at any time.
As shown in Figure 1 can have passed through after circulation in 4000 weeks under capacity by maintenance type lithium ion cylinder battery
Being down to 70%, its structure member includes block and the anode of Qi Nei, barrier film, battery cathode, electrolysis
Liquid；Described block is disposed with the hole for fixing pole, safety explosion-proof valve and sealing on it as shown in Figure 1
Valve.This inside battery includes positive electrode, negative material, barrier film and electrolyte, described positive and negative electrode
Material is self-produced LiFePO4 and lithium titanate material, and electrolyte includes that lithium salts LiPF6, carbonic ester are organic molten
Agent and additive.The process safeguarded is: turned on by two sealing bolts of diagram in glove box, uses
The method of vac sorb injects 20ml high-purity DMC solvent from sealing valve opening, by sealing ring and sealing spiral shell
Bolt threaded through bores installs, and battery storage in the environment of 45 degrees Celsius 6 hours.So repeat 3
Secondary, just solubilized and wash off remnants electrolyte lithium salt and repair inside battery interface.The most therefrom inject new
Fresh electrolyte, is used for sealed cell at the macromolecule silica gel that gap filling is suitable simultaneously.Every time after sealing
Then battery is after normal chemical conversion and partial volume step process, and discharge capacity has returned to initially after tested
More than the 95% of capacity, so far battery maintenance process terminates.
In sum, this utility model provides the lithium battery of a kind of replaceable electrolyte.Therefore this practicality
The advance of novel advantage in production technology, cost and performance and technology is it is clear that this technology
Facilitate implementation industrialization and be conducive to improving the market application foreground of lithium ion battery.
The above specific embodiment is only preferred implementation of the present utility model, it is noted that for
For those skilled in the art, on the premise of without departing from this utility model principle, also may be used
To make some improvement or replacement, these improve or replace and should also be as being considered as protection model of the present utility model
Enclose.
Claims (8)
1. a maintainable cylindrical lithium ion battery, including cylindrical housings, block and battery core, block is located at described cylindrical housings two ends, and battery core is encapsulated in described cylindrical shell, and battery core includes positive pole, barrier film, negative pole, electrolyte, it is characterised in that:
Described block is provided with circular hole, explosion-proof valve, at least one seal valve structure, and described circular hole is used for fixing pole；Described seal valve structure includes sealing bolt and sealing ring, the block hole coordinated with described sealing bolt being also located in block.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: it is provided with annular brace step in described block hole.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: annular brace step is prepared by the macromolecular material being prone to deformation.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: threaded engagement is passed through in described sealing bolt and block hole.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: the outer wall of described sealing bolt is provided with the spacing preiection coordinated with described annular brace step, is provided with sealing ring as sealing ring between described annular brace step and spacing preiection.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: the end face of described sealing bolt is provided with the interior hex slot for opening or many chamfered grooves.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: described explosion-proof valve is to be welded in end cap by the foil of prefabricated indentation to constitute.
The most according to claim 1 safeguard cylindrical lithium battery, it is characterised in that: the thickness of described barrier film is 20-60um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183769.6U CN205564860U (en) | 2016-03-10 | 2016-03-10 | Maintainable's cylindrical lithium -ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183769.6U CN205564860U (en) | 2016-03-10 | 2016-03-10 | Maintainable's cylindrical lithium -ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205564860U true CN205564860U (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620183769.6U Active CN205564860U (en) | 2016-03-10 | 2016-03-10 | Maintainable's cylindrical lithium -ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655505A (en) * | 2016-03-10 | 2016-06-08 | 龙能科技（苏州）有限责任公司 | Maintainable cylindrical lithium-ion battery |
-
2016
- 2016-03-10 CN CN201620183769.6U patent/CN205564860U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655505A (en) * | 2016-03-10 | 2016-06-08 | 龙能科技（苏州）有限责任公司 | Maintainable cylindrical lithium-ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170627 Address after: Ningdong Logistics Park 750000 the Ningxia Hui Autonomous Region Yinchuan City West (Dragon Nengxin energy industry project area) Patentee after: Dragon Technology (Ningxia) Co., Ltd. Address before: 215123 Jiangsu Province, Suzhou City Industrial Park Loufeng No. 20 East Fang Yun Lu Hua Industrial Park B District 2 Patentee before: Dragon Technology (Suzhou) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220216 Address after: 710000 room 10701, building 6, No. 65, Keji Second Road, high tech Zone, Xi'an, Shaanxi Province Patentee after: Baoli New Energy Technology Co.,Ltd. Address before: 750000 west side of Ningdong logistics park, Yinchuan City, Ningxia Hui Autonomous Region (longneng new energy industry project area) Patentee before: LONGPOWERS TECHNOLOGY (NINGXIA) CO.,LTD. |