CN1322603C - Method for manufacturing soft-packing lithium ion battery in natural environment - Google Patents
Method for manufacturing soft-packing lithium ion battery in natural environment Download PDFInfo
- Publication number
- CN1322603C CN1322603C CNB2005100167068A CN200510016706A CN1322603C CN 1322603 C CN1322603 C CN 1322603C CN B2005100167068 A CNB2005100167068 A CN B2005100167068A CN 200510016706 A CN200510016706 A CN 200510016706A CN 1322603 C CN1322603 C CN 1322603C
- Authority
- CN
- China
- Prior art keywords
- battery
- battery base
- base envelope
- guide ring
- envelope
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Primary Cells (AREA)
- Hybrid Cells (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a process for producing soft packaging lithium ion batteries in natural environment, and the processes of requisite anhydrous and oxygenfree environment for producing soft packaging lithium ion batteries are all limited in a pre-packed battery bag. Battery blanks and flow guiding blanks are pre-packed in the battery bag, after deep drying and charging inert gas, the pre-packed battery bag is rapidly connected a normally closed valve on a flow guiding ring, so the inside of the battery bag can be kept with an anhydrous and oxygenfree environment, and the battery bag becomes a full sealed system which is convenient for various manufacturing operation. The next requisite steps, such as vacuum pumping, electrolyte filling, activating and necessary chemical reaction, forming, go-on-go and vacuum sealing are all carried out on the battery bag, and the mass exchange between the battery bag and outside is carried out via the normally closed valve on the battery bag. Therefore, all procedures of manufacturing the soft packaging lithium ion battery can be carried out in an atmospheric environment.
Description
Technical field
The present invention relates to disclose the method for making flexible packing lithium ion battery in a kind of natural environment, belong to the manufacturing process technology field of lithium ion battery with the manufacturing process of aluminum-plastic composite membrane as the lithium ion battery of battery outer package.
Background technology
Flexible packing lithium ion battery produces with aluminium and moulds composite membrane as the battery case packaging material, by the positive plate that the anode collection collection is formed with anodal film material, and the negative plate that negative current collector and negative pole film material are formed.Add a barrier film between the positive/negative plate and constitute basic battery structure-battery base, being full of electrolyte in the space of battery base just becomes battery.Although the manufacturing process difference of flexible packing lithium ion battery, the process according to the battery base forms can be divided into two classes to manufacturing process, and the first kind is to form the battery base earlier to add electrolyte solution again, and great majority adopt this class technology; The present invention is fit to this class.Electrolyte solution has an awful dread of water, and except that battery material was wanted depth drying, the environment that electrolyte solution exposed also required frost point below-40 ℃.After electrolyte solution forms battery with positive/negative plate contact, not only water funkly also be afraid of oxygen.All must carry out in the environment of anhydrous and anaerobic so relate to the technology of electrolyte solution operation, such environment people can't get involved.Can reach this environment and simple device that the people can get involved is a glove box.For example: all spell out encapsulation and fluid injection among Chinese patent CN1341282A and the CN1310483A and in glove box, carry out; In the 21-24 page or leaf of CN1341282A the operation in the glove box being described in detail, is the simplest equipment that can realize that anhydrous and oxygen-free environment people can get involved although therefrom be not difficult to find out glove box, and a lot of deficiencies are still arranged.For example:
1, industrial glove box is the very high common apparatus of a kind of price, and takes up an area of greatly, and service efficiency is low.
2, it is big to keep anhydrous and anaerobic in the glove box (for example frost point-40 ℃, oxygen content is less than 100ppm) environment consumed energy.
3, all article of turnover glove box all need particularly advance logical sequence in the middle of the thing through middle logical sequence, vacuumize earlier to fill the atmospheric condition that dry inert gas repeatedly makes atmosphere in the logical sequence reach glove box and could move into glove box to article from middle logical sequence down, and are very inconvenient.
4, staff is by very inconvenience of long-armed gloves operation in glove box, and accuracy is low, and efficiency is low, makes the product poor repeatability.
5, influence operator ' s health, when particularly human arm stretches in long-armed air-locked gloves, after the moisture content that human body is discharged condenses,, also cause diseases such as dermatitis and bleb easily in gloves except that making the people feels under the weather.
Summary of the invention
The invention provides a kind of technology of making flexible packing lithium ion battery in natural environment, its purpose is intended to make the localization of the anhydrous and oxygen-free environment that needs when making flexible packing lithium ion battery, promptly is confined in the pre-packaged battery bag.
The invention also discloses a kind of be applicable to production technology of the present invention pre-packaged battery bag, help enforcement of the present invention.
The invention also discloses a kind of normally close valve that is applicable to production technology of the present invention.
The technology of the present invention solution is as follows: described battery base envelope is the sealing bag of an opening to be arranged and the battery base, both positive and negative polarity and the guide ring that are located in the bag constitute, and has through hole at the bag individual layer of corresponding guide ring central hole;
Described guide ring can have multiple shape, and the simplest cylindrical ring is best.The size of ring does not have strict restriction, preferably 2～10 millimeters of preferably high 2～5 millimeters becates, the internal diameter of ring, preferably 4～15 millimeters of external diameters.Have several pod apertures on the cylinder of ring, or open several guiding gutters on an end face, the effect of guide ring is to form the fluid passage, is convenient to sealing and location.
The size of described through hole and what, only influential to reaching the used time of dry limit.As long as this through hole suitably little (as: 1～10 millimeter), be closed in gas in the system and finish Gas Exchange by diffusion with the external world by through hole and need long time, the volume of closed system is big more, and through hole is more little, and required time is just long more.If small through hole sealing, the influence that the gas composition in the system is subjected to is very little in a very short time.
The present invention adopts a handle can finish in vacuum drying oven drying in the battery base envelope and the operation that is full of inert gas by this through hole, finish making the localization of the required anhydrous and oxygen-free environment of flexible packing lithium ion battery, finish the totally-enclosed of battery base envelope by a special-purpose normally close valve is connected to opening part rapidly.This special-purpose normally close valve can be advantageously connected on the special purpose interface of liquid-injection equipment, and makes the normally close valve unlatching can carry out fluid injection simultaneously.Remove the battery base envelope after this connection, can carry out necessary manufacturing process again, up to finishing changing into of battery.
The present invention makes the concrete technology of flexible packing lithium ion battery in natural environment, may further comprise the steps:
1) battery base envelope: the battery base of crossing through preliminarily dried and a guide ring are enclosed in the above-mentioned bag, and the guide ring device is in a side of bag, and the middle part of bag is heat-sealing band position;
2) battery base envelope is got through the hole: making through hole corresponding to the battery base envelope otch on the face in guide ring center, then the through hole that cuts is pressed in the water conservancy diversion annular distance;
3) depth drying and filling with inert gas: battery base envelope is put into the baking oven that can vacuumize and inflate, dry, charge into high-purity inert gas (as: nitrogen or argon gas) to normal pressure after vacuumizing, also can further vacuumize again, filling with inert gas is to normal pressure, and reduces to room temperature; The residual water steam of battery base envelope is reached below the 1ppm;
4) opening of closing battery base envelope: battery base envelope is taken out from vacuum drying oven, rapidly normally close valve is connected to the through hole of battery base envelope, make battery base envelope totally-enclosed;
5) add electrolyte solution: normally close valve is connected on the special purpose interface of fluid injection machine, battery base envelope and fluid injection machine is connect keep closely being connected, and normally close valve is opened, inject quantitative electrolyte solution;
6) place activation: take off the battery base envelope of fluid injection from fluid injection machine interface, tiltedly be placed on the special stand, make electrolyte flow to the bottom of battery base envelope smoothly, the battery base is absorbed all electrolyte in the battery base, guarantee to absorb fully;
7) change into go-on-go: the positive and negative lug of battery base envelope is connected with the corresponding positive and negative electrode of formation device, and the program of changing on request changes into, and the battery after changing into is carried out go-on-go.If the gas that produces drum bag is big, can exit in the formation process by normally close valve;
8) seal and separate guide ring end: the battery base envelope that changes into is linked on the heat sealing machine that has special purpose interface, after vacuumizing by special purpose interface earlier, along two parallel heat-sealing bands of battery limit heat-sealing, incision makes battery separate with guide ring between two heat-sealing bands, and guide ring returns together with appended normally close valve.
9) battery shaping and marking.
Technological operation of the present invention does not relate to the structural change of battery base, no matter be that winding-structure, foldable structure and stepped construction do not influence technology of the present invention and the instrument of using.
Good effect of the present invention is: by battery base envelope of the present invention, provide a kind of frost point to be lower than-40 ℃ depth drying, contain the oxygen-free environment that oxygen is lower than 100ppm, utilizing special fixture, valve to make operating procedure be confined to an as far as possible little space carries out, make the gas moisture vapor in the bag be lower than 1ppm, and oxygen content is almost identical with the inert gas that is filled, water vapor pressure content during than the frost point that reaches-40 ℃ in glove box is lower, and at this moment this to reach the body oxygen content of inflating be to be beyond one's reach in the glove box of-40 ℃ of frost points.Realized making flexible packing lithium ion battery under natural environment, the anhydrous and oxygen-free environment that can reach is more outstanding than using glove box.
Description of drawings
Fig. 1 is a battery base envelope schematic diagram.
Fig. 2 is the battery base envelope structure chart that normally close valve is housed.
Fig. 3 is the normally close valve schematic diagram that has hold-down ring.
Fig. 4 is the interface schematic diagram that cooperates usefulness with normally close valve.
Embodiment
The following examples just are used for further the present invention being described in detail, and do not limit the present invention.
Embodiment 1
Battery base envelope:
With reference to Fig. 1, this battery base envelope 1 is to be made of aluminum-plastic composite membrane, and a part wherein is used for forming the shell of flexible-packaged lithium from battery, for thicker battery base 2, preferably uses the battery base envelope that extrudes battery base shape in advance.Battery base envelope also can use the heat-sealing all around of two composite membranes, seal again after also can using a composite membrane to turn back, can only seal three peripheries to this battery base envelope, the size of battery base envelope determined by the size of battery base 2 and guide ring 4, but must leave between battery base 2 and the guide ring 4 two heat-sealings with 6 the distance more than wide.The radial through hole 5 of incision on the plane of corresponding guide ring 4 battery base envelopes 1, and an aluminum-plastic composite membrane that cuts is pressed into the endoporus of guide ring 4, auxiliary guide ring 4 location.Use a kind of can once finishing with the specific purpose tool that is pressed into flange to cut hole and location with cutting knife.
Embodiment 2
Guide ring 4 can have multiple shape, and the simplest cylindrical ring is best, and size does not have strict restriction, preferably 2～10 millimeters of preferably high 2～5 millimeters becates, the internal diameter of ring, preferably 4～15 millimeters of external diameters.Have several pod apertures on the cylinder of ring, or open several guiding gutters on an end face, the effect of guide ring is to form the fluid passage, is convenient to seal positioning port.
Embodiment 3
The technology of making flexible packing lithium ion battery in natural environment is:
1, battery base envelope: see embodiment 1.
2, battery base envelope punching: see embodiment 1.
3, depth drying and filling with inert gas: battery base envelope is put into the vacuum drying oven that to find time and to inflate, 80 ℃, vacuum degree is less than 10pa vacuumize more than 8 hours, charge into the nitrogen of 0.9999 above purity or argon gas then to normal pressure, be evacuated to 10pa again, fill the argon gas of above purity or nitrogen then to normal pressure, and reduce to room temperature.Finish once being evacuated to 10pa, be inflated to 1.01325 * 10 again
5Pa (standard pressure) reaches 10pa/ (1.01325 * 10 with regard to the residual gas that makes the battery bag
5Pa)
2=9.869 * 10
-5Below; Also can carry out secondary vacuum-inflation again, can make bag interior residual gas reach original (9.869 * 10
-5)=7.866 * 10
-9Below, residual gas is exactly all to be steam, and at this moment the gas that is full of in the bag is exactly that moisture vapor is lower than 7.966 * 10
-9And oxygen content is almost identical with the inert gas that is filled.
4, the opening of closing battery bag: battery base envelope 1 is taken out from vacuum drying oven, rapidly the opening of battery base envelope 1 is sealed, seal available single face adhesive tape diaphragm, the most handy special-purpose normally close valve 9 seals.Substantially kept the moisture and the oxygen content condition that reach in step 3 in the battery base envelope 1 after sealing.This is that Atmospheric components can only be by diffusing in the bag because unique through hole 5 is when contacting atmosphere, and this diffusion velocity is very slow.
5, add electrolyte solution: normally close valve 9 is connected on the special purpose interface of fluid injection machine, the effect of interface is that interface is opened normally close valve when following normally close valve 9 to link together, and makes battery base envelope 1 and fluid injection machine connect maintenance closely to be connected.The fluid injection machine preferably has earlier and vacuumizes, and the function of fluid injection is injected quantitative electrolyte solution again.
6, place activation: take off the battery base envelope 1 of fluid injection from fluid injection machine interface, tiltedly be placed on the special stand.The effect of this support is to keep the certain inclination of battery base envelope, makes electrolyte flow to the bottom of battery base envelope 1 smoothly, and battery base 2 is absorbed all electrolyte in the battery base, and places minimumly more than 4 hours, guarantees to absorb fully.
7, need carry out the battery of chemistry or physical chemistry processing, for example contain polymerisable monomer or crosslinkable performed polymer in the electrolyte solution, through heating or radiation polymerization, can heat, radiation polymerization or the processing of other physical chemistry.
8, change into go-on-go: both positive and negative polarity 3 ears on the battery base envelope 1 are connected with the corresponding positive and negative electrode of formation device, and the program of changing on request changes into, and the battery after changing into is carried out go-on-go.If the gas that produces drum bag is big, can exit in the formation process by normally close valve.
9, seal and separate guide ring end: the battery base envelope 1 that changes into is linked on the heat sealing machine that has special purpose interface, after vacuumizing by special purpose interface earlier, as Fig. 2, along two parallel heat-sealing bands of battery limit heat-sealing, cutting between two heat-sealing bands makes battery separate with guide ring, guide ring returns step 4 together with appended normally close valve, and normally close valve 9 can be reused (needn't clean again and drying).
10, battery shaping and marking: after the trimmer shaping and marking, can put in storage from 8 isolated battery profiles.
Embodiment 4
Basic identical with embodiment 3, the different step 3 of being installs normally close valve 9 for battery base envelope 1, and normally close valve shown in Figure 39 is installed on the battery base envelope 1 as shown in Figure 2, with a stop extension rod on this valve is pressed into and makes opening of valves in the valve; Step 4 among the embodiment 3 is to remove stop take out battery base envelope 1 from vacuum drying oven before, makes normally close valve recover normally closed.Its advantage is the unlatching that stop can be controlled many battery base envelopes simultaneously, and can once finish the sealing of battery base envelope 1 in vacuum drying oven, makes the interior anhydrous and oxygen-free environment of bag not be subjected to or be subjected to less the influence of natural environment.
Claims (3)
1, a kind of battery base envelope is characterized in that: be the sealing bag that an opening is arranged and the battery base, both positive and negative polarity and the guide ring that are located in the bag constitute, have through hole at the bag individual layer of corresponding guide ring central hole.
2, battery base envelope according to claim 1 is characterized in that: have several pod apertures on the cylinder of guide ring, or open several guiding gutters on an end face
3, in natural environment, make the technology of flexible packing lithium ion battery, may further comprise the steps:
1) battery base envelope: the battery base of crossing through preliminarily dried and a guide ring are enclosed in the bag of battery base envelope, and the guide ring device is in a side of bag, and the middle part of bag is heat-sealing band position;
2) battery base envelope is got through the hole: making through hole corresponding to the battery base envelope otch on the face in guide ring center, then the through hole that cuts is pressed in the water conservancy diversion annular distance;
3) depth drying and filling with inert gas: battery base envelope is put into the baking oven that can vacuumize and inflate, dry, charge into high-purity inert nitrogen gas or argon gas after vacuumizing to normal pressure, and reduce to room temperature; The residual water steam of battery base envelope is reached below the 1ppm;
4) opening of closing battery base envelope: battery base envelope is taken out from vacuum drying oven, rapidly normally close valve is connected on the through hole of battery base envelope;
5) add electrolyte solution: normally close valve is connected on the special purpose interface of fluid injection machine, makes battery base envelope and fluid injection machine interface keep closely being connected, inject quantitative electrolyte solution;
6) place activation: take off the battery base envelope of fluid injection from fluid injection machine interface, tiltedly be placed on the special stand, make electrolyte flow to the bottom of battery base envelope smoothly, the battery base is absorbed all electrolyte in the battery base, guarantee to absorb fully;
7) change into go-on-go: the positive and negative lug of battery base envelope is connected with the corresponding positive and negative electrode of formation device, the program of changing on request changes into, and the battery after changing into carried out go-on-go, if the gas that produces drum bag is big, can exit in the formation process by normally close valve;
8) seal and separate guide ring end: the battery base envelope that changes into is linked on the heat sealing machine that has special purpose interface, after vacuumizing by special purpose interface earlier, along two parallel heat-sealing bands of battery limit heat-sealing, incision makes battery separate with guide ring between two heat-sealing bands, and guide ring returns together with appended normally close valve;
9) battery shaping and marking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100167068A CN1322603C (en) | 2005-09-28 | 2005-09-28 | Method for manufacturing soft-packing lithium ion battery in natural environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100167068A CN1322603C (en) | 2005-09-28 | 2005-09-28 | Method for manufacturing soft-packing lithium ion battery in natural environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731598A CN1731598A (en) | 2006-02-08 |
| CN1322603C true CN1322603C (en) | 2007-06-20 |
Family
ID=35963919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100167068A Expired - Fee Related CN1322603C (en) | 2005-09-28 | 2005-09-28 | Method for manufacturing soft-packing lithium ion battery in natural environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1322603C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083344B (en) * | 2006-05-31 | 2010-09-29 | 比亚迪股份有限公司 | Lithium ion secondary battery and manufacture method |
| CN101281983B (en) * | 2007-04-02 | 2010-10-06 | 深圳邦凯新能源股份有限公司 | Combined production method for flexible package lithium cell |
| CN101593850A (en) * | 2008-05-29 | 2009-12-02 | 深圳市比克电池有限公司 | The manufacture method of lithium ion battery |
| CN101533927B (en) * | 2009-03-17 | 2010-09-29 | 林道勇 | Method for manufacturing lithium ion battery |
| KR101304870B1 (en) * | 2010-12-02 | 2013-09-06 | 주식회사 엘지화학 | Method for Manufacturing Battery Cell and Battery Cell Manufactured Thereby |
| DE102015007196A1 (en) * | 2015-06-09 | 2016-12-15 | Industrie-Partner Gmbh Radebeul-Coswig | "Method for producing electrolyte pouch cells for electric battery arrangements, corresponding device and electrolyte pouch cell" |
| CN106025145B (en) * | 2016-08-09 | 2018-08-10 | 连云港德立信电子科技有限公司 | A kind of sealing of flexible package lithium cell two drain exhaust packaging technology |
| CN108609225A (en) * | 2016-12-10 | 2018-10-02 | 中国科学院大连化学物理研究所 | A kind of encapsulation of fuel cell membrane electrode and storage method |
| CN107681104B (en) * | 2017-08-23 | 2020-12-25 | 安徽省力霸动力锂电池科技有限公司 | Liquid injection process of polymer soft package lithium ion battery |
| US12034171B2 (en) * | 2020-11-09 | 2024-07-09 | Medtronic, Inc. | Energy storage device assemblies |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000294204A (en) * | 1999-04-08 | 2000-10-20 | Dainippon Printing Co Ltd | Packing shape and packing method of polymer battery |
| CN1340444A (en) * | 2000-08-31 | 2002-03-20 | 厦门宝龙工业股份有限公司 | Soft package structure of battery core and its making method |
| JP2002216741A (en) * | 2001-01-18 | 2002-08-02 | Dainippon Printing Co Ltd | Lithium ion battery tab |
| CN1411081A (en) * | 2002-11-15 | 2003-04-16 | 中信国安盟固利电源技术有限公司 | Flexible package liquid state lithium ion battery |
-
2005
- 2005-09-28 CN CNB2005100167068A patent/CN1322603C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000294204A (en) * | 1999-04-08 | 2000-10-20 | Dainippon Printing Co Ltd | Packing shape and packing method of polymer battery |
| CN1340444A (en) * | 2000-08-31 | 2002-03-20 | 厦门宝龙工业股份有限公司 | Soft package structure of battery core and its making method |
| JP2002216741A (en) * | 2001-01-18 | 2002-08-02 | Dainippon Printing Co Ltd | Lithium ion battery tab |
| CN1411081A (en) * | 2002-11-15 | 2003-04-16 | 中信国安盟固利电源技术有限公司 | Flexible package liquid state lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1731598A (en) | 2006-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1322603C (en) | Method for manufacturing soft-packing lithium ion battery in natural environment | |
| CN101533927B (en) | Method for manufacturing lithium ion battery | |
| CN100395904C (en) | Process and device for cell pole piece pressurization and injection | |
| CN101794915B (en) | Lithium ion battery structure and preparation method thereof | |
| CN102117936A (en) | Method for forming flexibly packaged lithium ion battery | |
| CN101350427A (en) | Method for manufacturing lithium secondary battery | |
| CN105489924B (en) | Extraction sector and the air extractor with the extraction sector | |
| CN114156610B (en) | Helium filling device for lithium battery and helium filling method for soft package lithium battery | |
| CN105552441A (en) | Flexibly packaged lithium battery evacuation apparatus and use method thereof | |
| CN109817848A (en) | Battery core package system and technique | |
| CN108172921A (en) | The air-exhaust method of soft-package battery | |
| CN108807833A (en) | A kind of battery liquid-filling structure and battery | |
| CN207398190U (en) | A kind of alkaline battery cathode sealing structure | |
| CN110828905A (en) | Method for manufacturing lithium ion battery | |
| CN201528017U (en) | Lithium ion battery structure | |
| CN101488587A (en) | Activation apparatus and method for soft packing lithium ionic cell | |
| CN208360573U (en) | Sealing element sealing punctures the sealer vacuumized | |
| CN207925565U (en) | A kind of soft-package battery is evacuated packaging system without cavity | |
| CN201699061U (en) | Packaging bag for lithium ion batteries | |
| CN103159171A (en) | LiBH4-doped metal sulfide hydrogen-storage composite material and preparation method thereof | |
| CN110707367A (en) | Opening formation method for soft package lithium ion battery production | |
| CN207009485U (en) | A kind of flexible packing lithium ion battery packaging film structure | |
| CN103035950A (en) | Method for exhausting gas and sealing lithium ion battery | |
| CN205761110U (en) | A kind of photo catalysis reactor | |
| CN209298275U (en) | A kind of lithium ion battery negative pressure formation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20091028 |