CN102261834A - Vacuum sintering furnace for lithium iron phosphate power battery - Google Patents
Vacuum sintering furnace for lithium iron phosphate power battery Download PDFInfo
- Publication number
- CN102261834A CN102261834A CN2010101810629A CN201010181062A CN102261834A CN 102261834 A CN102261834 A CN 102261834A CN 2010101810629 A CN2010101810629 A CN 2010101810629A CN 201010181062 A CN201010181062 A CN 201010181062A CN 102261834 A CN102261834 A CN 102261834A
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- CN
- China
- Prior art keywords
- sintering furnace
- power battery
- vacuum
- furnace
- iron phosphate
- Prior art date
- 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
Abstract
The invention relates to a vacuum sintering furnace for a lithium iron phosphate power battery. Currently, lithium iron phosphate power battery production enterprises in China encounter a technical bottleneck of high scrap rate of finished products in production, and the main factor lies in that the traditional continuous sintering furnace is difficult in high temperature control and requires a large amount of nitrogen gas for sintering protection. Through practice, the problem of difficulty in high temperature control is successfully solved, and the temperature can be stably controlled to be between 750+/- 1-5 DEG C, so the vacuum sintering furnace met technical requirement; the problem of easily-oxidized raw material is solved because the vacuum degree is kept in a furnace body, gas impurities, asphalt and the like generated by material due to high temperature are pumped out of the furnace body during vacuum pumping, so that the purity of the material is kept. The vacuum sintering furnace is reasonable in structure and energy-saving, and ensures high finished product yield.
Description
(1) technical field
Be used for battery material (LiFePO4, phosphoric acid alum lithium material etc.), industrial chemicals, the calcining of mineral material.
(2) background technology
Technology one: 750 ℃ of high temperature are stable, tyre Temperature Detector in the body of heater, and temperature-control range generally is controlled between 1 ℃～5 ℃, meets the high-temperature control requirement;
Technology two: body of heater seals fully, works under anaerobic state, and it is stable that vacuum keeps;
Technology three: body of heater can be adjusted rotation as required when work, material stirs in stove and do not lump, and the temperature calcining evenly;
Technology four: air-cooling device is arranged, can lower the temperature on request, body of heater tiltable left-right rotation makes things convenient for discharging;
Technology five: electricity saving and energy saving, the nitrogen loss is low;
Technology six: the qualified yield rate 95%～100% of LiFePO 4 material;
(3) summary of the invention
In the conventional sintering stove stove stove upset inhomogeneous cause heating inhomogeneous, easily oxidation, problems such as discharging difficulty. the present invention has adopted the body of heater rotation, and it is inhomogeneous that the electrically heated mode in center has solved in the stove upset, gives birth to burning, burning and problem such as half-cooked; The mode that vacuumizes has solved the problem of easy oxidation; Utilize the contraction of hydraulic arm to solve the problem of discharging difficulty. this kind sintering furnace is totally-enclosed and turn round under protection of nitrogen gas atmosphere, has created oxygen-free environment, and qualified yield rate reaches 95%～100%.
(3) specific embodiment
The inventor by the repetition test more than 2 years, now is developed into LiFePO4 ion power battery material vacuum sintering furnace on LiFePO4 vacuum sintering furnace technical research,
This kind sintering furnace mainly is used in electrokinetic cell manufacturing enterprise and under vacuum or protective atmosphere condition material is carried out sintering processes.Horizontal type structure is applicable to metal material in high vacuum, carries out sintering, degassing processing under the hot conditions, also is applicable to that the deshydroxy of quartz material is handled simultaneously.
This kind sintering furnace is made up of body of heater, vacuum system and hydraulic system and electric control system etc.Body of heater and furnace bottom all adopt double-decker, and casing temperature is no more than 50 ℃.Thermometric adopts heating wire and thermocouple, has guaranteed temperature measurement accuracy.Vacuum system adopts two stage pump or triplex, and the program thereby instrument can set up program on their own, finishes sintering process automatically, owing to material is calcined under the situation of rolling, so do not have living burning, burning and half-cooked phenomenon.
Claims (7)
- LiFePO4 ion power battery material vacuum sintering furnace1. this kind sintering furnace, material is 304 stainless steels and 310S stainless steel;
- 2. furnace diameter 400mm to 3000mm, length 500mm to 15000m does not wait;
- 3. machine driven system adopts electrodeless variable-speed and mechanic gear system, 0.5 rev/min to 50 rev/mins of rotating speed;
- 4. adopt air pressure and hydraulic cylinder jacking system;
- 5. sealing is adopted and is made up of vavuum pump pumped vacuum systems, mechanical sealing member, magnetic seal spare and articulation;
- 6. the heater elements such as adopting heating wire, ribbon heater of heating;
- 7. cooling system adopts: air cooling and water-cooling apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101810629A CN102261834A (en) | 2010-05-24 | 2010-05-24 | Vacuum sintering furnace for lithium iron phosphate power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101810629A CN102261834A (en) | 2010-05-24 | 2010-05-24 | Vacuum sintering furnace for lithium iron phosphate power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102261834A true CN102261834A (en) | 2011-11-30 |
Family
ID=45008560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101810629A Pending CN102261834A (en) | 2010-05-24 | 2010-05-24 | Vacuum sintering furnace for lithium iron phosphate power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102261834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856551A (en) * | 2012-09-29 | 2013-01-02 | 徐剑晖 | Method for preparing lithium iron phosphate in batch-type high-vacuum dynamic sintering mode |
| CN104269523A (en) * | 2014-08-29 | 2015-01-07 | 江苏华东锂电技术研究院有限公司 | Powder sintering system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952573A (en) * | 2005-10-20 | 2007-04-25 | 李永华 | Vacuum sintering furnace |
| CN2929614Y (en) * | 2006-07-21 | 2007-08-01 | 成志 | Push plate furnace for producing lithium ion cell positive electrode material |
| CN101186289A (en) * | 2006-11-17 | 2008-05-28 | 喻维杰 | Method for producing lithium iron phosphate material by vacuum rotary kiln |
-
2010
- 2010-05-24 CN CN2010101810629A patent/CN102261834A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952573A (en) * | 2005-10-20 | 2007-04-25 | 李永华 | Vacuum sintering furnace |
| CN2929614Y (en) * | 2006-07-21 | 2007-08-01 | 成志 | Push plate furnace for producing lithium ion cell positive electrode material |
| CN101186289A (en) * | 2006-11-17 | 2008-05-28 | 喻维杰 | Method for producing lithium iron phosphate material by vacuum rotary kiln |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856551A (en) * | 2012-09-29 | 2013-01-02 | 徐剑晖 | Method for preparing lithium iron phosphate in batch-type high-vacuum dynamic sintering mode |
| CN104269523A (en) * | 2014-08-29 | 2015-01-07 | 江苏华东锂电技术研究院有限公司 | Powder sintering system |
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| 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: 20111130 |