CN100517825C - A fuel cell stack suitable for mass production and assembly - Google Patents
A fuel cell stack suitable for mass production and assembly Download PDFInfo
- Publication number
- CN100517825C CN100517825C CNB031156975A CN03115697A CN100517825C CN 100517825 C CN100517825 C CN 100517825C CN B031156975 A CNB031156975 A CN B031156975A CN 03115697 A CN03115697 A CN 03115697A CN 100517825 C CN100517825 C CN 100517825C
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- proton exchange
- diffusion layer
- exchange membrane
- catalyst
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 27
- 238000009792 diffusion process Methods 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 2
- 239000012945 sealing adhesive Substances 0.000 claims 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007800 oxidant agent Substances 0.000 description 12
- 230000001590 oxidative effect Effects 0.000 description 12
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 238000010923 batch production Methods 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000003487 electrochemical reaction Methods 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 3
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Images
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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Fuel Cell (AREA)
Abstract
The fuel cell pile suitable for mass production and assembling includes guiding plate, porous diffusion layer material, membrane electrode, front end plate and back end plate. The guiding plate has porous diffusion layer material covering its one side, and the membrane electrode consists of proton exchange membrane and catalyst coated to two sides of the proton exchange membrane. Two opposite guiding plates and one membrane electrode in between are pressurized to laminate and front end plate and back end plate are set on two ends to constitute the fuel cell pile. Compared with available technology, the fuel cell pile of the present invention may be detached into three independent parts, including guide plate, porous diffusion layer material and membrane electrode, which may be mass produced to realize the large scale production of fuel cell pile.
Description
Technical field
The present invention relates to fuel cell pack, relate in particular to the fuel cell pack of a kind of suitable batch process and assembling.
Background technology
Electrochemical fuel cell is a kind of device that hydrogen fuel and oxidant can be changed into electric energy and product.The internal core parts of this device are membrane electrode (Membrane Electrode Assembly are called for short MEA), and membrane electrode (MEA) is made up of as carbon paper a proton exchange membrane, two porous conductive materials of film two sides folder.The catalyst that contains the initiation electrochemical reaction of even tiny dispersion on two boundary faces of film and carbon paper is as the metal platinum catalyst.The electronics that the membrane electrode both sides can will take place to generate in the electrochemical reaction process with conductive body is drawn by external circuit, constitutes current circuit.
At the anode tap of membrane electrode, fuel can pass porousness diffusion material (carbon paper) by infiltration, and electrochemical reaction takes place on catalyst surface, lose electronics, form cation, cation can pass proton exchange membrane by migration, arrives the other end cathode terminal of membrane electrode.At the cathode terminal of membrane electrode, contain the gas of oxidant (as oxygen), as air, pass porousness diffusion material (carbon paper), and the generation electrochemical reaction obtains electronics on catalyst surface, forms anion by infiltration.The cation of coming in the anion and the anode tap migration of cathode terminal formation reacts, and forms product.
Adopting hydrogen is fuel, and the air that contains oxygen is in the Proton Exchange Membrane Fuel Cells of oxidant (or pure oxygen is an oxidant), and fuel hydrogen has just produced hydrogen cation (or being proton) in the catalytic electrochemical reaction of anode region.Proton exchange membrane helps the hydrogen cation to move to the cathodic region from the anode region.In addition, proton exchange membrane is separated the air-flow and the oxygen containing air-flow of hydrogen fuel, they can not mixed mutually and produces explosion type reaction.
In the cathodic region, oxygen obtains electronics on catalyst surface, forms anion, and moves the hydrogen cation reaction of coming, reaction of formation product water with the anode region.In the Proton Exchange Membrane Fuel Cells that adopts hydrogen, air (oxygen), anode reaction and cathode reaction can be expressed in order to following equation:
Anode reaction: H
2→ 2H
++ 2e
Cathode reaction: 1/2O
2+ 2H
++ 2e → H
2O
In typical Proton Exchange Membrane Fuel Cells, membrane electrode (MEA) generally all is placed in the middle of the pole plate of two conductions, and quarter is milled by die casting, punching press or machinery in the surface that every block of flow guiding electrode plate contacts with membrane electrode, and formation is the guiding gutter of one or more at least.These flow guiding electrode plates can be the pole plates of metal material, also can be the pole plates of graphite material.Water conservancy diversion duct on these flow guiding electrode plates and guiding gutter import fuel and oxidant the anode region and the cathodic region on membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there is a membrane electrode, the membrane electrode both sides are respectively the guide plate of anode fuel and the guide plate of cathode oxidant.These guide plates are both as the current collector motherboard, also as the mechanical support on membrane electrode both sides, guiding gutter on the guide plate acts as a fuel again and enters the passage of anode, cathode surface with oxidant, and as the passage of taking away the water that generates in the fuel cell operation process.
In order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, two or more monocells can be connected into battery pack or be unified into battery pack by the mode that tiles usually by straight folded mode.In straight folded, in-line battery pack, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode, and this pole plate is called bipolar plates.A series of monocell connects together by certain way and forms a battery pack.Battery pack tightens together by upper head plate, bottom plate and pull bar usually and becomes one.
A typical battery stack generally includes: the water conservancy diversion import and the flow-guiding channel of (1) fuel and oxidant gas are distributed to fuel (as hydrogen, methyl alcohol or the hydrogen-rich gas that obtained by methyl alcohol, natural gas, gasoline) and oxidant (mainly being oxygen or air) in the guiding gutter of each anode, cathode plane equably after reforming; (2) import and export and the flow-guiding channel of cooling fluid (as water) are evenly distributed to cooling fluid in each battery pack inner cooling channel, the heat absorption that hydrogen in the fuel cell, the exothermic reaction of oxygen electrochemistry are generated and take battery pack out of after dispel the heat; (3) outlet of fuel and oxidant gas and corresponding flow-guiding channel, fuel gas and oxidant gas are when discharging, and portability goes out the liquid that generates in the fuel cell, the water of steam state.Usually, the import and export of all fuel, oxidant, cooling fluid are all opened on the end plate of fuel battery or on two end plates.
Proton Exchange Membrane Fuel Cells can be used as the dynamical system of delivery vehicles such as all cars, ship, can make portable, portable, fixed Blast Furnace Top Gas Recovery Turbine Unit (TRT) again.The Proton Exchange Membrane Fuel Cells electricity generation system must comprise fuel cell pack, fuel hydrogen supply, air supply, cooling heat dissipation, various piece such as control and electric energy output automatically.
The key of the extensive commercial application of Proton Exchange Membrane Fuel Cells electricity generation system is to realize the large-scale production and the assembling of pem fuel cell stack, and the extensive industrialization of the auxiliary operation various piece of other fuel cell packs is to realize easily with assembling.
Pem fuel cell stack is assembled into a complete fuel cell pack by motherboard, front end-plate, end plate and securing member again by polylith guide plate and the superimposed fuel cell pack of forming of multi-disc " three-in-one " electrode at present.
As U.S.Patent 5,863, the typical fuel-cell single-cell structure of indication in 673, as shown in Figure 1, fuel cell pack is superimposed together by a plurality of this monocells and forms, as shown in Figure 2.
Baffler in the fuel cell pack and electric current motherboard, front and back ends and securing member etc. can dismounting, but wherein the parts of most critical " three-in-one " electrode is an integral body, and these parts are generally suppressed successfully by heat pressing process by the porousness diffusion layer material that proton exchange membrane and two inner layer sheets are worn catalyst.When large-scale fuel cell pack industrialization is produced, must realize the large-scale pipeline production of " three-in-one " electrode.At present, this porousness diffusion layer material of being worn catalyst by proton exchange membrane and two inner layer sheets causes huge difficulty with inconvenient for the production of " three-in-one " electrode large-scale pipeline by the production technology of hot pressing:
(1) streamline production needs the porousness diffusion layer material of coiled material type, and the internal layer surface must scribble catalyst.But the carbon paper material that the porousness diffusion layer material is more crisp often can fracture when forming the coiled material type, particularly coats when forming coiled material behind the catalyst, and catalyst easily drops.
(2) streamline production " three-in-one " electrode, the hot pressing cylinder that accurate control temperature, pressure must be arranged, to guarantee the consistency of performance of each sheet " three-in-one " electrode, temperature, the pressure controlled hot pressing cylinder of high-precision requirement are very difficult and implement so.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of suitable batch process rational in infrastructure, easy to process and the fuel cell pack of assembling for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: the fuel cell pack of a kind of suitable batch process and assembling, comprise baffler, the porousness diffusion layer material, membrane electrode, front end-plate, end plate, it is characterized in that, guiding gutter one side of described baffler is coated with one deck porousness diffusion layer material, described membrane electrode is made up of proton exchange membrane and this proton exchange membrane two side catalyst layer, described baffler, the periphery of the proton exchange membrane of porousness diffusion layer material and band catalyst is provided with sealing elastomer, the proton exchange membrane of a band of pressing catalyst in the middle of two relative bafflers that are coated with the porousness diffusion layer material is constituted monocell, it is superimposed to organize this monocell more, and front end-plate is set at two ends, end plate promptly constitutes the fuel cell pack that is fit to batch process and assembling.
Described porousness diffusion layer material is the porousness carbon paper, or other porous material, and its periphery is provided with sealing elastomer.
Described sealing elastomer is a sealant, or caulking gum.
The proton exchange membrane of described baffler, porousness diffusion layer material and band catalyst is three kinds of independently load modules.
Because the proton exchange membrane of the baffler of fuel cell pack of the present invention, porousness diffusion layer material, band catalyst is three kinds of independently parts, all can repeated disassembled and assembled, and by compress or bond after have good air tightness, therefore, the large-scale production of this fuel cell pack is exactly to three kinds of independently production and assemblings of the proton exchange membrane of parts baffler, porousness diffusion layer material, band catalyst with assembling, thereby avoided the hot-pressing production process of " three-in-one " electrode, the large-scale production of fuel cell pack and assembling are realized easily.
Description of drawings
Fig. 1 is the structural representation of existing fuel cell pack monocell;
Fig. 2 is the structural representation of existing fuel cell pack;
Fig. 3 is the structural representation of fuel cell pack monocell of the present invention;
Fig. 4 is the structural representation of fuel cell pack baffler of the present invention;
Fig. 5 is the structural representation of fuel cell pack porousness diffusion layer material of the present invention;
Fig. 6 is the structural representation of fuel cell pack band catalyst proton exchange membrane of the present invention;
Fig. 7 is the decomposition texture schematic diagram of fuel cell pack monocell of the present invention;
Fig. 8 is the decomposition texture schematic diagram of fuel cell pack of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 3, the fuel cell pack of a kind of suitable batch process and assembling, comprise baffler 1, porousness carbon paper 2, membrane electrode 3, front end-plate (figure does not show), end plate (figure does not show), guiding gutter 11 1 sides of described baffler 1 are coated with one deck porousness carbon paper 2, described membrane electrode 3 is made up of proton exchange membrane 31 and this proton exchange membrane two side catalyst layer 32, described baffler 1, the periphery of the proton exchange membrane 3 of porousness carbon paper 2 and band catalyst is provided with sealing elastomer 4, the proton exchange membrane 3 of a band of pressing catalyst in the middle of two relative bafflers that are coated with the porousness diffusion layer material 1 is constituted monocell, it is superimposed to organize this monocell more, and front end-plate is set at two ends, end plate promptly constitutes the fuel cell pack that is fit to batch process and assembling.
Part beyond the dotted line of described baffler 1 is coated good elastomer of air-tightness or adhesive 4, as shown in Figure 4, extraordinary elastomer of carbon paper filling air-tightness or adhesive 4 beyond the dotted line of described porousness carbon paper 2, as shown in Figure 5, the dotted line of described membrane electrode 3 proton exchange membrane 31 is coated with interior part two sides and adds catalyst 32, coat good elastomer of air-tightness or adhesive 4 on the film beyond the dotted line, as shown in Figure 6, the fuel cell pack monocell that is assembled into according to above-mentioned parts as shown in Figure 7; The fuel cell pack monocell that several are such can be dressed up a fuel cell pack, as shown in Figure 8.
This fuel cell pack can all split into independently three kinds of parts repeatedly, it is respectively baffler 1, porousness carbon paper 2, membrane electrode 3 (proton exchange membrane of band catalyst), carry out the flowing water assembling by a large amount of these three kinds of parts and can be made into fuel cell pack, and each independent parts baffler 1, porousness carbon paper 2, membrane electrode 3 can independently in a large number be processed, thereby can realize the large-scale industrial production of fuel cell pack.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031156975A CN100517825C (en) | 2003-03-07 | 2003-03-07 | A fuel cell stack suitable for mass production and assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031156975A CN100517825C (en) | 2003-03-07 | 2003-03-07 | A fuel cell stack suitable for mass production and assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1527425A CN1527425A (en) | 2004-09-08 |
| CN100517825C true CN100517825C (en) | 2009-07-22 |
Family
ID=34284393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031156975A Expired - Lifetime CN100517825C (en) | 2003-03-07 | 2003-03-07 | A fuel cell stack suitable for mass production and assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100517825C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352091C (en) * | 2004-11-03 | 2007-11-28 | 比亚迪股份有限公司 | Method for preparing fuel cell membrane electrode with integrative structure |
| CN100530788C (en) * | 2005-08-03 | 2009-08-19 | 鸿富锦精密工业（深圳）有限公司 | Fuel battery, fuel battery set and fuel battery manufacturing method |
| US9373851B2 (en) * | 2006-03-27 | 2016-06-21 | Mitsubishi Pencil Company, Limited | Fuel cell |
| CN101969129B (en) * | 2010-10-11 | 2012-12-26 | 无锡国赢科技有限公司 | Batch production method of membrane electrode and manufacturing mould therefor |
| CN106876756B (en) * | 2015-12-10 | 2023-06-23 | 上海神力科技有限公司 | A method for continuous production of single cells for fuel cells |
-
2003
- 2003-03-07 CN CNB031156975A patent/CN100517825C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1527425A (en) | 2004-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5486430A (en) | Internal fluid manifold assembly for an electrochemical fuel cell stack array | |
| CN102306813B (en) | Fuel cell bipolar plate prepared through metal sheet stamping and forming, and application thereof | |
| CN100414754C (en) | Packaging and fixing device for an integrated fuel cell stack | |
| CN101140982A (en) | New structure of fuel cell seal assembly | |
| CN102110838A (en) | Proton exchange membrane fuel cell stack | |
| CN1328816C (en) | Integrated fuel cell | |
| CN100517825C (en) | A fuel cell stack suitable for mass production and assembly | |
| CN201126844Y (en) | Integration type fuel cell stack | |
| CN206789622U (en) | A kind of flow battery or fuel cell used metal electrode plate | |
| CN100356618C (en) | High-efficient fuel battery guide bipolar plates and producing method thereof | |
| CN100444445C (en) | Composite structure of current collector plate and end plate for fuel cell | |
| CN101325267A (en) | Method for integrating inner-humidification fuel batter with proton exchange film | |
| CN100536210C (en) | Design for collecting plate of integrated fuel cell | |
| CN1198352C (en) | Fuel battery with higher output power | |
| CN201051522Y (en) | A fuel battery compound body | |
| CN100342575C (en) | Hydrogen storage device for fuel battery | |
| CN201060900Y (en) | Non-water blocking pipeline device of fuel cell pack | |
| CN100536208C (en) | Design of inlet and outlet piping of integrated fuel cell stack | |
| CN100464450C (en) | A high mechanical strength fuel cell guide plate and its manufacturing method | |
| CN101436673B (en) | Integration type fuel battery easy to mount/demount | |
| CN101335354A (en) | Fluid inlet and outlet setting method for fuel cell stack | |
| CN201117729Y (en) | Fuel cell stack fastening device | |
| CN101335353B (en) | Assembling method for fluid distributing board and current collecting master board of fuel cell | |
| CN100361333C (en) | A method to improve the performance of individual cells at the end of a fuel cell stack | |
| CN2789944Y (en) | Thermal die for pressing fuel battery flat pole |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY Free format text: FORMER OWNER: SHANGHAI SHEN-LI HIGH TECH CO., LTD. Effective date: 20121224 Owner name: SHANGHAI SHEN-LI HIGH TECH CO., LTD. STATE GRID CO Effective date: 20121224 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201400 FENGXIAN, SHANGHAI TO: 200122 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121224 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Patentee after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: Shanghai Shenli Technology Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 201400, 10, Pu Pu Industrial Zone, Shanghai, No. 111, Pu Pu Avenue Patentee before: Shanghai Shenli Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090722 |
|
| CX01 | Expiry of patent term |