CN101082531A - Sealing property detecting method and apparatus of polymer lithium ionic cell - Google Patents
Sealing property detecting method and apparatus of polymer lithium ionic cell Download PDFInfo
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- CN101082531A CN101082531A CN 200610027141 CN200610027141A CN101082531A CN 101082531 A CN101082531 A CN 101082531A CN 200610027141 CN200610027141 CN 200610027141 CN 200610027141 A CN200610027141 A CN 200610027141A CN 101082531 A CN101082531 A CN 101082531A
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Abstract
The invention relates to the polymer lithium ion battery technology field especially a kind of sealing performance detection method and the equipment of the polymer lithium. The operation steps of this method are that: put the battery in the container and force on the container to some pressure and keep 1-15 minute; the pressure can reach the balance after some time and at the time open the ball plug rapidly to release the pressure of container and the pressure is higher than normal atmosphere because the pressure of entering the battery inner can not be released enough and rapid so the battery represents expansion rapidly further it checks the poor product visually. This equipment adopts the pressurization container and the container can be forced at the same time it has one ball valve which can be opened rapidly to release the pressure. It mainly resolves the technology problem about that the present detection method can make the battery leaked the electrolyte forcing under the vacuum because it is not seal or the bad sealing also avoid causing the battery with good tightness generating the broken case under suction pressure during the operation course.
Description
Technical field
The present invention relates to the sealing property detecting method and the equipment of polymer Li-ion battery technical field, particularly a kind of polymer Li-ion battery.
Background technology
Lithium ion battery is the development of nineteen nineties Japan Sony Corporation and begins to realize commercial that its appearance is the once leap on the secondary cell development history.Lithium ion battery is in light weight with it, capacity is high, operating voltage is high, long service life and characteristics such as pollution-free and developed rapidly, and its global marketing volume has surpassed the summation of ni-mh, nickel-cadmium battery.There had been significant progress in China aspect the lithium ion battery industrialization in recent years, and 2003 gross annual output amounts surpass 2.5 hundred million, reach 500,000,000 production scale in 2005, caught up with and surpassed the advanced world level.Polymer Li-ion battery is a kind of of lithium ion battery, is different from the lithium ion battery of metal as shell, has higher capacity density, energy density, have in light weight, characteristics such as structural design is simple.Simultaneously, its critical technological point is arranged also, is difficult to control as the sealing of battery, exist small leakage will cause use and storing process in problems such as inflatable, leakage take place, even inefficacy.
On structure, because the housing of polymer Li-ion battery is aluminum-plastic composite membrane not, carry out hot sealing with battery afflux liquid, because metal and organic undesirable in conjunction with effect, general collector and the middle fluid sealant that adds special use of aluminum-plastic composite membrane at battery, fluid sealant has good relatively and above the two sealing property, even like this, also there is certain bad ratio, this not the good general cause directly scrapping of battery, perhaps use inflatable and leakage, will cause even more serious consequence, become restriction polymer Li-ion battery combination property and product percent of pass the biggest factor.
At above-mentioned situation, conventional detection is as follows: design the metal can that can vacuumize, battery is placed in this tank body, carry out vacuum pumping.The battery that sealing does not live or sealing is bad is under the effect of vacuum, will electrolyte leakage, and then check out defective products, but, this kind operation also can cause the battery of good seal own destroyed under negative pressure, battery also can bulging get up, and causes becoming in the use afterwards bad hidden danger; And owing to do not have too much electrolytic solution in the design of battery, such detection method is also unreliable, and existence can not be found the possibility of battery leakage, becomes hidden danger maximum in the battery use.Therefore, use rational technological design scheme and equipment can effectively solve qualification rate and reliability that above labile factor will be improved polymer Li-ion battery greatly.
Summary of the invention
The sealing property detecting method and the equipment that the purpose of this invention is to provide a kind of polymer Li-ion battery, mainly solving existing detection method can make sealing not live or the bad battery electrolyte leakage under the effect of vacuum of sealing, and then check out the technical matters of defective products, also avoided causing in the operation battery ruined situation under negative pressure of good seal own to take place.
For solving the problems of the technologies described above, the present invention is achieved in that
A kind of sealing property detecting method of polymer Li-ion battery is characterized in that operation steps: battery is put in the tank body, be pressurized to certain pressure to tank body, kept 1-15 minute; Through the regular hour, pressure reaches balance, at this moment, opens ball valve rapidly, discharges the pressure of tank body, and enters the pressure of inside battery owing to can not discharge fully rapidly, and pressure is higher than normal pressure, and battery shows as rapid expansion, thereby checks out defective products intuitively.
The sealing property detecting method of described polymer Li-ion battery is characterized in that being pressurized to pressure to tank body is the 3-20 kilogram.
A kind of sealing property checkout equipment of polymer Li-ion battery of said method is characterized in that this equipment adopts withstand voltage tank body, and tank body can pressurize, and has a ball valve simultaneously, can open relief pressure rapidly.
By technique scheme, the technique effect that the present invention has is:
1, by method and apparatus of the present invention, will effectively check out the defective and bad polymer Li-ion battery of sealing, reduce the inflatable of battery and the generation of leakage problem, improve polymer Li-ion battery reliability in use greatly.
2, be pressurized to certain pressure (3-20 kgf) to tank body in the inventive method, kept 1-15 minute, such pressure has overcome the battery ruined situation under negative pressure that causes good seal own in the existing method and has taken place the not influence of battery of good seal.
Embodiment
The invention provides a kind of method of sealing property detecting method invention of polymer Li-ion battery, its operating process is: battery is put in the tank body, be pressurized to certain pressure (3-20 kgf) to tank body, kept 1-15 minute, such pressure is to the not influence of battery of good seal, because itself vacuumizes inside battery, itself be exactly a system that trends towards to the inside battery contraction, the situation of pressurization just makes this situation strengthen slightly; If the sealing of battery existing problems, then gas will be easy to enter inside battery, through the regular hour, pressure reaches balance, at this moment, open ball valve rapidly, discharge the pressure of tank body, and enter the pressure of inside battery owing to can not discharge fully rapidly, pressure is higher than normal pressure, battery shows as rapid expansion, thereby we can check out defective products intuitively.
The equipment of realizing said method mainly is to adopt withstand voltage tank body, and tank body can pressurize, and has a ball valve simultaneously, can open relief pressure rapidly.
By method and apparatus of the present invention, will effectively check out the defective and bad polymer Li-ion battery of sealing, will improve polymer Li-ion battery reliability in use greatly.
Being preferred embodiment of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (3)
1, a kind of sealing property detecting method of polymer Li-ion battery is characterized in that operation steps: battery is put in the tank body, be pressurized to certain pressure to tank body, kept 1-15 minute; Through the regular hour, pressure reaches balance, at this moment, opens ball valve rapidly, discharges the pressure of tank body, and enters the pressure of inside battery owing to can not discharge fully rapidly, and pressure is higher than normal pressure, and battery shows as rapid expansion, thereby checks out defective products intuitively.
2, the sealing property detecting method of polymer Li-ion battery according to claim 1 is characterized in that being pressurized to pressure to tank body is the 3-20 kilogram.
3, a kind of sealing property checkout equipment of the polymer Li-ion battery of method as claimed in claim 1 or 2 of realizing is characterized in that this equipment adopts withstand voltage tank body, and tank body can pressurize, and has a ball valve simultaneously, can open relief pressure rapidly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610027141 CN101082531A (en) | 2006-05-31 | 2006-05-31 | Sealing property detecting method and apparatus of polymer lithium ionic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610027141 CN101082531A (en) | 2006-05-31 | 2006-05-31 | Sealing property detecting method and apparatus of polymer lithium ionic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101082531A true CN101082531A (en) | 2007-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610027141 Pending CN101082531A (en) | 2006-05-31 | 2006-05-31 | Sealing property detecting method and apparatus of polymer lithium ionic cell |
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| CN (1) | CN101082531A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183345A (en) * | 2011-01-31 | 2011-09-14 | 中国科学院上海硅酸盐研究所 | Sodium sulfur battery pressing and leakage detection device and using method |
| CN103123289A (en) * | 2011-11-17 | 2013-05-29 | 三星Sdi株式会社 | Leakage test device used for bag of rechargeable battery |
| CN103148990A (en) * | 2013-02-04 | 2013-06-12 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium ion battery gas tightness detecting method |
-
2006
- 2006-05-31 CN CN 200610027141 patent/CN101082531A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183345A (en) * | 2011-01-31 | 2011-09-14 | 中国科学院上海硅酸盐研究所 | Sodium sulfur battery pressing and leakage detection device and using method |
| CN102183345B (en) * | 2011-01-31 | 2014-08-06 | 上海电气钠硫储能技术有限公司 | Sodium sulfur battery pressing and leakage detection device and using method |
| CN103123289A (en) * | 2011-11-17 | 2013-05-29 | 三星Sdi株式会社 | Leakage test device used for bag of rechargeable battery |
| CN103148990A (en) * | 2013-02-04 | 2013-06-12 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium ion battery gas tightness detecting method |
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Open date: 20071205 |