CN102097602A - Lithium ion battery cover plate - Google Patents
Lithium ion battery cover plate Download PDFInfo
- Publication number
- CN102097602A CN102097602A CN2011100056662A CN201110005666A CN102097602A CN 102097602 A CN102097602 A CN 102097602A CN 2011100056662 A CN2011100056662 A CN 2011100056662A CN 201110005666 A CN201110005666 A CN 201110005666A CN 102097602 A CN102097602 A CN 102097602A
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- CN
- China
- Prior art keywords
- battery cover
- cover board
- lithium ion
- cover plate
- battery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention relates to a lithium ion battery cover plate, and belongs to the technical field of shell batteries. The lithium ion battery cover plate comprises an electrode polar column which is inserted into the battery cover plate fixedly and a liquid injection hole formed on the battery cover plate, wherein the electrode polar column (3) is in a hollow tubular shape which is opened at the bottom end and is closed at the top end, a hollow part in the electrode polar column is in a shape of a structure of which the diameter on the lower part is greater than that on the upper part, and an anti-explosion hole (6) is formed on one side of the upper part; the outer edge on the upper part of the electrode polar column is in a threaded shape, and an elastic sleeve (4) is sleeved on the electrode polar column; and a protective cover (5) is in threaded connection with the outer edge on the upper part of the electrode polar column. The electrode polar column which is in a shape similar to that of a structure of a valve core of a bicycle is inserted into the battery cover plate fixedly, so when the pressure inside a battery is relatively low, the elastic sleeve can prevent air and moisture on the outside from entering a battery shell; and when the air pressure in the battery shell is overhigh, the air passes through the liquid injection hole to deform the elastic sleeve, so the air is released to achieve an anti-explosion effect.
Description
Technical field
The present invention relates to a kind of lithium ion battery cover board, belong to housing battery technology field.
Background technology
Since secondary lithium battery and commercialization are developed in Japanese Sony company invention in 1991, lithium ion battery develops rapidly, its range of application enlarges day by day, in recent years, lithium ion battery is at electric bicycle, battery-operated motor cycle, constantly use on the electric automobile, because the general capacity of power lithium-ion battery monomer electricity core is bigger, in use owing to short circuit, overcharge, cross and the serious consequence that causes such as put, cell generally is equipped with explosion-protection equipment for fear of battery.At present, the explosion-protection equipment that lithium ion battery is commonly used has two kinds, explosion-proof indentation and explosion-proof valve, and these two kinds of explosion-protection equipment principles are for when inner pressure of battery reaches certain value, and explosion-proof indentation or explosion-proof valve break and emit gas.Though these two kinds of explosion-protection equipment simplicity of design, very high for the production equipment required precision, conformity of production is poor.Utilize battery that explosion-proof indentation and explosion-proof valve manufacture and design after explosion-proof indentation and explosion-proof valve break, entire cell is promptly scrapped.
Lithium ion battery is divided into soft-package battery and housing battery according to the packing difference, and its middle shell battery is generally aluminum-shell battery.Aluminum-shell battery generally adopts opening to change in chemical synthesis technology, because electrolyte is easy to absorb moisture, therefore needs control formation process ambient humidity, and the input that this has increased enterprise has undoubtedly increased production cost; Negative pole generates the SEI film and produces a large amount of gases simultaneously in formation process, because liquid injection hole is very little, cause gas when discharging liquid injection hole, to take electrolyte out of, this causes electrolyte waste on the one hand, on the other hand, because electrolyte stream causes the pollution of battery container to the battery container, form battery bad order product, in addition, because the loss of electrolyte also may cause battery capacity on the low side.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, the lithium ion battery cover board of the chemical synthesizing method that provides a kind of and have explosion prevention function, can take to remain silent.
Its technical scheme is: a kind of lithium ion battery cover board, comprise and interting at electrode pole on the battery cover board and the liquid injection hole that is opened on the battery cover board, it is characterized in that: described electrode pole is an open bottom end, the hollow tubular of top closure, hollow space is the planform of lower diameter greater than upper diameter in it, and top one side offers explosionproof hole; The top outer rim of electrode pole is a shape of threads, is set with spring-backed quill on it, adopts between the top outer rim of protective cover and electrode pole to be threaded.
Its technique effect is: owing to intert the electrode pole of fixed class like the bicycle valve core planform on battery cover board, the explosionproof hole that electrode pole top one side is offered carries out sealing of hole by spring-backed quill, by protective cover spring-backed quill is protected again, so when cell internal pressure hour, spring-backed quill can effectively stop ambient atmos and moisture to enter in the battery case by this explosionproof hole; When the gas pressure in the battery case was excessive, gas then made the spring-backed quill distortion by this explosionproof hole, thereby discharges gas, plays explosion-proof effect; Simultaneously, the housing battery can adopt the mode of changing into of remaining silent in formation process, when electrolyte when being taken or being splashed to out of electrode pole inwall by the gas that produced, then can reflux smoothly, thereby effectively avoided electrolyte in the opening formation process loss and for the pollution of battery container, and need not control and change into ambient humidity, both simplified production technology, reduce production cost, improved production efficiency again.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Specific embodiments
As shown in Figure 1, a kind of lithium ion battery cover board comprises the interspersed electrode pole and the liquid injection hole 7 that is opened on the battery cover board that is fixed on the battery cover board 1.Electrode pole 3 is an open bottom end, the hollow tubular of top closure, and hollow space is the planform of lower diameter greater than upper diameter in it, and top one side offers explosionproof hole 6.The top outer rim of electrode pole is a shape of threads, is set with spring-backed quill 4 on it, adopts between the top outer rim of protective cover 5 and electrode pole to be threaded.
Described intert to be fixed between electrode pole 3 on the battery cover board 1 and the battery cover board be provided with sealed insulation body 2.Battery case cover plate, sealed insulation body and electrode pole can be injected into one.
Described spring-backed quill 4 adopt oil resistants, anti-HF acid, anti-80 ℃ anti-aging with having of interior high temperature, whippy macromolecule lipoidis material.
Described protective cover 5 adopts the metal material identical with electrode.
Positive and negative electrode pole on the battery cover board both can adopt the planform of above-mentioned electrode pole respectively, also can adopt the planform of above-mentioned electrode pole separately.
Claims (3)
1. lithium ion battery cover board, comprise the interspersed electrode pole and the liquid injection hole that is opened on the battery cover board that is fixed on the battery cover board, it is characterized in that: described electrode pole (3) is open bottom end, the hollow tubular of top closure, hollow space is the planform of lower diameter greater than upper diameter in it, and top one side offers explosionproof hole (6); The top outer rim of electrode pole is a shape of threads, is set with spring-backed quill (4) on it, adopts between the top outer rim of protective cover (5) and electrode pole to be threaded.
2. a kind of lithium ion battery cover board according to claim 1 is characterized in that: described intert to be fixed between electrode pole (3) on the battery cover board (1) and the battery cover board be provided with sealed insulation body (2).
3. a kind of lithium ion battery cover board according to claim 1 is characterized in that: described spring-backed quill (4) be oil resistant, anti-HF acid, anti-80 ℃ anti-aging with having of interior high temperature, whippy macromolecule lipid material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100056662A CN102097602A (en) | 2011-01-12 | 2011-01-12 | Lithium ion battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100056662A CN102097602A (en) | 2011-01-12 | 2011-01-12 | Lithium ion battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102097602A true CN102097602A (en) | 2011-06-15 |
Family
ID=44130549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100056662A Pending CN102097602A (en) | 2011-01-12 | 2011-01-12 | Lithium ion battery cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102097602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864988A (en) * | 2022-03-16 | 2022-08-05 | 四川华能氢能科技有限公司 | Composite hydrogen fuel cell with explosion-proof structure |
| WO2024104164A1 (en) * | 2022-11-14 | 2024-05-23 | 深圳海辰储能科技有限公司 | Cover plate assembly, battery, battery assembly method, battery pack and electric device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079501A (en) * | 2006-05-26 | 2007-11-28 | 重庆戴徕密客电源有限公司 | A secondary liquid lithium ion cell structure |
| CN201523035U (en) * | 2009-09-21 | 2010-07-07 | 天津力神电池股份有限公司 | Insulating protecting sleeve structure of lithium ion power battery pole post |
-
2011
- 2011-01-12 CN CN2011100056662A patent/CN102097602A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079501A (en) * | 2006-05-26 | 2007-11-28 | 重庆戴徕密客电源有限公司 | A secondary liquid lithium ion cell structure |
| CN201523035U (en) * | 2009-09-21 | 2010-07-07 | 天津力神电池股份有限公司 | Insulating protecting sleeve structure of lithium ion power battery pole post |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864988A (en) * | 2022-03-16 | 2022-08-05 | 四川华能氢能科技有限公司 | Composite hydrogen fuel cell with explosion-proof structure |
| WO2024104164A1 (en) * | 2022-11-14 | 2024-05-23 | 深圳海辰储能科技有限公司 | Cover plate assembly, battery, battery assembly method, battery pack and electric device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |