CN2473751Y - Fuel battery capable of full use of hydrogen and oxidant - Google Patents
Fuel battery capable of full use of hydrogen and oxidant Download PDFInfo
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- CN2473751Y CN2473751Y CN01239079U CN01239079U CN2473751Y CN 2473751 Y CN2473751 Y CN 2473751Y CN 01239079 U CN01239079 U CN 01239079U CN 01239079 U CN01239079 U CN 01239079U CN 2473751 Y CN2473751 Y CN 2473751Y
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model relates to a fuel battery by which the hydrogen gas and the oxidizer can be used sufficiently. The utility model comprises a group battery, a hydrogen bottle, an oxidizer bottle and a circulating system of cooling water, which is characterized in that the circulating system of cooling water comprises one or two pulsating pumps, one or two water tanks, and a circulating water pump. When the cooling water of the group battery through the pulsating pump at high speed is discharged into the water tank, the producing water in the inner of the group battery can be sucked out and taken into the water tank by the air entry of the pulsating pump. The utility model overcomes the limitation that the producing water needed to be taken out by excessive hydrogen gas and oxidizer in present technique, therefore the hydrogen gas and oxidizer can be used sufficiently.
Description
The present invention relates to electrochemical fuel cells, and more particularly to a fuel cell that can make full use of hydrogen and oxidant.
An electrochemical fuel cell is a device that is capable of converting hydrogen fuel and an oxidant into electrical energy and reaction products. The inner core component of the device is a Membrane Electrode (MEA), which is composed of a proton exchange Membrane and two porous conductive materials sandwiched between two surfaces of the Membrane, such as carbon paper. The membrane contains a uniform and finely dispersed catalyst, such as a platinum metal catalyst, for initiating an electrochemical reaction at the interface between the membrane and the carbon paper. The electrons generated in the electrochemical reaction process can be led out by conductive objects at two sides of the membrane electrode through an external circuit to form a current loop.
At the anode end of the membrane electrode, fuel can permeate through a porous diffusion material (carbon paper) and undergo electrochemical reaction on the surface of a catalyst to lose electrons to form positive ions, and the positive ions can pass through a proton exchange membrane through migration to reach the cathode end at the other end of the membrane electrode. At the cathode end of the membrane electrode, a gas containing an oxidant (e.g., oxygen), such as air, forms negative ions by permeating through a porous diffusion material (carbon paper) and electrochemically reacting on the surface of the catalyst to give electrons. The anions formed at the cathode end react with the positive ions transferred from the anode end to form reaction products.
In a pem fuel cell using hydrogen as the fuel and oxygen-containing air as the oxidant (or pure oxygen as the oxidant), the catalytic electrochemical reaction of the fuel hydrogen in the anode region produces hydrogen cations (or protons). The proton exchange membrane assists the migration of positive hydrogen ions from the anode region to the cathode region. In addition, the proton exchange membrane separates the hydrogen-containing fuel gas stream from the oxygen-containing gas stream so that they do not mix with each other to cause explosive reactions.
In the cathode region, oxygen gains electrons onthe catalyst surface, forming negative ions, which react with the hydrogen positive ions transported from the anode region to produce water as a reaction product. In a proton exchange membrane fuel cell using hydrogen, air (oxygen), the anode reaction and the cathode reaction can be expressed by the following equations:
and (3) anode reaction:
and (3) cathode reaction:
in a typical pem fuel cell, a Membrane Electrode Assembly (MEA) is typically placed between two conductive plates, and the surface of each conductive plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more channels. The conductive plates can be plates made of metal materials or plates made of graphite materials. The flow guide pore canals and the flow guide grooves on the conductive polar plates respectively guide the fuel and the oxidant into the anode area and the cathode area on two sides of the membrane electrode. In the structure of a single proton exchange membrane fuel cell, only one membrane electrode is arranged, and a flow guide polar plate of anode fuel and a flow guide polar plate of cathode oxidant are respectively arranged on two sides of the membrane electrode. The flow guide polar plates are used as current collector plates and mechanical supports at two sides of the membrane electrode, and the flow guide grooves on the flow guide polar plates are also used as channels for fuel and oxidant to enter the surfaces of the anode and the cathode and as channels for taking away water generated in the operation process of the fuel cell.
In order to increase the total power of the whole proton exchange membrane fuel cell, two or more single cells can be connected in series to form a battery pack in a straight-stacked manner or connected in a flat-laid manner to form a battery pack. In the direct-stacking and serial-type battery pack, two surfaces of one polar plate can be provided with flow guide grooves, wherein one surface can be used as an anode flow guide surface of one membrane electrode, and the other surface can be used as a cathode flow guide surface of another adjacent membrane electrode, and the polar plate is called a bipolar plate. A series of cells are connected together in a manner to form a battery pack. The battery pack is generally fastened together into one body by a front end plate, a rear end plate and a tie rod.
A typical battery pack generally includes: (1) the fuel (such as hydrogen, methanol or hydrogen-rich gas obtained by reforming methanol, natural gas and gasoline) and the oxidant (mainly oxygen or air) are uniformly distributed in the diversion trenches of the anode surface and the cathode surface; (2) cooling fluid (such as water) is uniformly distributed into cooling channels in each battery pack through an inlet and an outlet of the cooling fluid and a flow guide channel, and heat generated by electrochemical exothermic reaction of hydrogen and oxygen in the fuel cell is absorbed and taken out of the battery pack for heat dissipation; (3) the outlets of the fuel gas and the oxidant gas and the corresponding flow guide channels can carry out liquid and vapor water generated in the fuel cell when the fuel gas and the oxidant gas are discharged. Typically, all fuel, oxidant, and cooling fluid inlets and outlets are provided in one or both end plates of the fuel cell stack.
The positive hydrogen ions in the anode region migrate through the proton exchange membrane and usually need to carry a large number of water molecules to pass through together, so that the water molecules must be kept on the two side surfaces of the membrane to ensure that the migration conductance of the positive hydrogen ions is not affected. Therefore,the fuel and oxidant gases must be humidified before they enter the active region of the fuel cell to react in order to ensure that the membrane in the membrane electrode is saturated with water.
When pure hydrogen is used as a fuel and pure oxygen is used as an oxidant, in order to bring out water generated inside the fuel cell and increase the operation performance of the fuel cell, the fuel hydrogen and the oxidant oxygen are often required to operate in a metering ratio state of more than 1, and the part of the fuel hydrogen and the oxidant oxygen which is more than 1 of the metering ratio can carry the water generated inside the fuel cell to be directly discharged outside the cell, but precious fuel hydrogen and oxidant oxygen are often wasted.
In order to make full use of both the fuel hydrogen and the oxidant oxygen and to carry away the water produced inside the fuel cell, US Patent 5441821 (1995) uses a technology called a catapult pump, as shown in fig. 1. The principle behind this technique is to use a catapult pump, as shown in fig. 2, which can generate a certain vacuum suction at the inlet B when the gas (hydrogen or oxygen) rapidly passes through the narrow passage a, so as to suck back the excess fuel or oxidant in excess of the metering ratio 1. However, the following disadvantages are present with this technique: the processing requirement of the ejection pump is very high, and each processed ejection pump can only work under specific working conditions and lacks automatic change, for example, a certain flow rate enters a fuel cell and can only suck back a certain flow rate of return gas under the condition that the working pressure of gas at the front end of the ejection pump is not changed, the ejection pump lacks a self-changing function when the flow rate entering the fuel cell is changed or the ejection pump is in static flow, and particularly, the ejection pump cannot suck back gas under the conditionthat the gas at the front end of the ejection pump is in static flow.
The present invention is directed to overcome the above-mentioned drawbacks of the prior art and to provide a fuel cell in which the generated water of the battery pack can be continuously sucked out, thereby making full use of the hydrogen and the oxidant.
The purpose of the utility model can be realized through the following technical scheme: a fuel cell capable of making hydrogen and oxidant fully utilized comprises a battery pack, a hydrogen cylinder, an oxidant cylinder and a cooling water circulation system, wherein the battery pack comprises a hydrogen inlet, an oxidant inlet, a generated water outlet, a cooling water inlet and a cooling water outlet, a hydrogen pressure reducing valve is arranged at the outlet of the hydrogen cylinder, an oxidant pressure reducing valve is arranged at the outlet of the oxidant cylinder, and the fuel cell is characterized in that the cooling water circulation system comprises one or two water suction pumps, one or two water tanks and a circulation water pump, wherein the water suction pumps comprise an inner shell and an outer shell, a jacket is formed between the inner shell and the outer shell, a water inlet is arranged at the top of the inner shell and connected with the cooling water outlet of the battery pack, a throttle orifice is arranged at the bottom of the inner shell and communicated with the jacket, a water spray orifice is arranged at the bottom of the outer shell and communicated with the water, the upper part of the side of the shell is provided with an air suction port, one end of the air suction port is connected with a generated water outlet of the battery pack, the other end of the air suction port is communicated with the jacket, when cooling water of the battery pack is discharged into the water tank through the water suction pump at a high speed, the airsuction port of the water suction pump can suck out the generated water in the battery pack and bring the generated water into the water tank, the circulating water pump is arranged between the outlet of the water tank and the cooling water inlet of the battery pack, and the circulating water pump provides power for the circulation of.
The oxidant is oxygen, the one to two water suction pumps are two water suction pumps, namely a first water suction pump and a second water suction pump, the one to two water tanks are two water tanks, namely a first water tank and a second water tank, the generated water outlet comprises a first generated water outlet and a second generated water outlet, the first water suction pump is arranged in the first water tank, an air suction port of the first water suction pump is connected with the first generated water outlet, the second water suction pump is arranged in the second water tank, an air suction port of the second water suction pump is connected with the second generated water outlet, and outlets of the first water tank and the second water tank are connected with an inlet of the circulating water pump after being connected in parallel.
The oxidant is oxygen, the one to two water suction pumps are two water suction pumps, namely a first water suction pump and a second water suction pump, the one to two water tanks are two water tanks, namely a first water tank and a second water tank, the generated water outlet comprises a first generated water outlet and a second generated water outlet, the water spray opening of the first water suction pump is arranged in the first water tank, the rest of the water spray opening is arranged outside the first water tank, the air suction opening of the first water suction pump is connected with the first generated water outlet, the water spray opening of the second water suction pump is arranged in the second water tank, the rest of the water spray opening is arranged outside the second water tank, the air suction opening of the second water suction pump is connected with the second generated water outlet, and the outlets of the first water tank and the second water tank are connected with the inlet of the circulating water pump after being connected in parallel.
The first water tank and the second water tank can be integrally processed in a separated mode in the middle.
The oxidant is air, the one to two water suction pumps are water suction pumps, the one to two water tanks are water tanks, and the water suction pumps are arranged in the water tanks.
The oxidant is air, the one to two water suction pumps are water suction pumps, the one to two water tanks are water tanks, water spray ports of the water suction pumps are arranged in the water tanks, and the rest parts of the water suction pumps are arranged outside the water tanks.
The upper side part of the water tank is provided with a hydrogen or oxidant recovery port which is connected with a hydrogen inlet or an oxidant inlet of the battery pack.
The water suction pump is made of polytetrafluoroethylene engineering plastics or stainless steel materials.
The utility model discloses owing to adopted above technical scheme, consequently have following characteristics:
1. the ejection pump is not needed, and the hydrogen and the oxidant are balanced and act on the fuel cell at the same pressure.
2. By utilizing the principle of the water suction pump, when the cooling water is pumped into the water suction pump by the circulating water pump at a high speed and is discharged into the water tank, the water in the battery pack is sucked out by the air suction port of the water suction pump and is carried into the water tank.
3. As long as the circulating water pump continuously works, the water generated by the battery pack can be continuously sucked out, and the hydrogen and the oxidant do not need to be discharged out of the fuel cell, thereby achieving 100 percent utilization.
4. The same is true when air is used as the oxidant, but only the hydrogen is needed and the water is pumped through the water-absorbing pump, and the air can directly carry the water out of the fuel cell.
5. This design simplifies and improves the overall system of existing fuel cells.
6. The material of the water suction pump of the utility model adopts engineering plastics, such as polytetrafluoroethylene, 316 stainless steel and other materials, thereby not polluting water.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of an improved fuel cell of the prior art;
FIG. 2 is a schematic diagram of the configuration of the shot pump of FIG. 1;
fig. 3 is a schematic structural diagram of the present invention.
Example 1
As shown in fig. 3, a fuel cell capable of making full use of hydrogen and oxygen comprises a battery pack 1, a hydrogen cylinder 2, an oxygen cylinder 3, and a cooling water circulation system 4; the battery pack 1 comprises a hydrogen inlet 11, an oxygen inlet 12, a first produced water outlet 13, a second produced water outlet 14, a cooling water inlet 15 and a cooling water outlet 16, wherein a hydrogen pressure reducing valve 21is arranged at the outlet of the hydrogen bottle 2, and an oxygen pressure reducing valve 31 is arranged at the outlet of the oxygen bottle 3; the cooling water circulation system 4 is characterized by comprising a first water suction pump 41, a second water suction pump 42, a first water tank 43, a second water tank 44, a circulating water pump 45 and circulating water 46, wherein the first water suction pump 41 comprises an inner shell 411 and an outer shell 412, a jacket 413 is formed between the inner shell and the outer shell, a water inlet 414 is arranged at the top of the inner shell 411, the water inlet 414 is connected with a cooling water outlet 16 of the battery pack 1, a throttling opening 415 is arranged at the bottom of the inner shell 411, the throttling opening 415 is communicated with the jacket 413, a water spray opening 416 is arranged at the bottom of the outer shell 412, the water spray opening 416 is communicated with the first water tank 43, an air suction opening 417 is arranged at the upper side part of the outer shell 412, one end of the air suction opening 417 is connected with a first produced water outlet 13 of the battery pack; the second suction pump 42 has the same structure as the first suction pump 41, and the suction port 427 of the second suction pump 42 is connected to the second produced water outlet 14 of the battery pack 1; the first water suction pump 41 is arranged in the first water tank 43, the second water suction pump 42 is arranged in the second water tank 44, an outlet 431 is arranged at the bottom of the first water tank 43, an outlet 441 is arranged at the bottom of the second water tank 44, and the outlets 431 and 441 of the two water tanks are connected in parallel and then connected with an inlet of the circulating water pump 45. When the cooling water 46 of the battery pack 1 passes through the suction pumps 41, 42 at a high speed and is discharged into the water tanks 43, 44, the suction ports 417, 427 of the suction pumps 41, 42 suck the generated water inside the battery pack 1 and bring it into the water tanks 43, 44, the circulating water pump 45 is provided between the water tank outlets 431, 441 and the cooling water inlet 15 of the battery pack 1, and the circulating water pump 45 powers the circulation of the battery pack cooling water 46. Furthermore, the upper parts of the water tanks 43 and 44 are respectively provided with a hydrogen recovery port 432 and an oxygen recovery port 442, and the hydrogen or oxygen recovery ports 432 and 442 are respectively connected with the hydrogen inlet 11 and the oxygen inlet 12 of the battery pack 1; the first water tank 43 and the second water tank 44 are manufactured in a middle separation integral processing mode; the water suction pumps 41 and 42 are made of polytetrafluoroethylene engineering plastics or stainless steel materials.
Example 2
Referring to fig. 3, an oxidant of a fuel cell capable of making full use of fuel hydrogen is air. The battery comprises a battery pack 1, a hydrogen cylinder 2 and a cooling water circulation system 4, wherein the battery pack 1 comprises a hydrogen inlet 11, an air inlet 12, a generated water outlet 13, an air outlet 14, a cooling water inlet 15 and a cooling water outlet 16, a hydrogen pressure reducing valve 21 is arranged at the outlet of the hydrogen cylinder 2, the cooling water circulation system 4 comprises a water suction pump 41, a water tank 43, a circulating water pump 45 and cooling water 46, the water suction pump 41 comprises an inner shell 411 and an outer shell 412, a jacket 413 is formed between the inner shell 411 and the outer shell 412, a water inlet 414 is arranged at the top of the inner shell 411 and is connected with the cooling water outlet 16 of the battery pack 1, a throttling port 415 is arranged at the bottom of the inner shell 411 and is communicated with the jacket 413, a water spray port 416 is arranged at the bottom of the outer shell 412 and is communicated with the water tank 43, the upper part of the side of the shell 412 is provided with an air inlet 417, one end of the air inlet 417 is connected with the generated water outlet 13 of the battery pack 1, the other end is communicated with the jacket 413, the water suction pump 41 is arranged in the water tank 43, when the cooling water 46 of the battery pack 1 passes through the water suction pump 41 at high speed and is discharged into the water tank 43, the air inlet 417 of the water suction pump 41 can suck the generated water in the battery pack 1 out and bring the generated water into the water tank 43; since the battery uses air as oxidant, only the hydrogen gas side is needed to be used by a water suction pump, and the air can directly carry the generated water to be discharged from the air outlet 14 of the battery pack 1; the circulating water pump 45 is arranged between the outlet 431 of the water tank 43 and the cooling water inlet 15 of the battery pack 1, and the circulating water pump 45 provides power for the circulation of the battery pack cooling water 46. In addition, the upper side of the water tank 43 is provided with a hydrogen recovery port 432, and the hydrogen recovery port 432 is connected with the hydrogen inlet 11 of the battery pack 1; the water suction pump 41 is made of polytetrafluoroethylene engineering plastics or stainless steel materials.
Example 3
Referring to fig. 3, an oxidant of a fuel cell capable of making full use of fuel hydrogen is air. The battery comprises a battery pack 1, a hydrogen cylinder 2 and a cooling water circulation system 4, wherein the battery pack 1 comprises a hydrogen inlet 11, an air inlet 12, a generated water outlet 13, an air outlet 14, a cooling water inlet 15 and a cooling water outlet 16, a hydrogen pressure reducing valve 21 is arranged at the outlet of the hydrogen cylinder 2, the cooling water circulation system 4 comprises a water suction pump 41, a water tank 43, a circulating water pump 45 and cooling water 46, the water suction pump 41 comprises an inner shell 411 and an outer shell 412, a jacket 413 is formed between the inner shell 411 and the outer shell 412, a water inlet 414 is arranged at the top of the inner shell 411 and is connected with the cooling water outlet 16 of the battery pack 1, a throttling port 415 is arranged at the bottom of the inner shell 411 and is communicated with the jacket 413, a water spray port 416 is arranged at the bottom of the outer shell 412 and is communicated with the water tank 43, the upper part of the side of the shell 412 is provided with an air suction port 417, one end of the air suction port 417 is connected with the generated water outlet 13 of the battery pack 1, the other end is communicated with a jacket 413, a water spray port 416 of the water suction pump 41 is arranged in the water tank 43, and the rest part is arranged outside the water tank 43; when the cooling water 46 of the battery pack 1 passes through the water suction pump 41 at a high speed and is discharged into the water tank 43, the suction port 417 of the water suction pump 41 sucks out the generated water inside the battery pack 1 and carries it into the water tank 43; since the battery uses air as oxidant, only the hydrogen gas side is needed to be used by a water suction pump, and the air can directly carry the generated water to be discharged from the air outlet 14 of the battery pack 1; the circulating water pump 45 is arranged between the outlet 431 of the water tank 43 and the cooling water inlet 15 of the battery pack 1, and the circulating water pump 45 provides power for the circulation of the battery pack cooling water 46. In addition, the upper side of the water tank 43 is provided with a hydrogen recovery port 432, and the hydrogen recovery port 432 is connected with the hydrogen inlet 11 of the battery pack 1; the water suction pump 41 is made of polytetrafluoroethylene engineering plastics or stainless steel materials.
Claims (8)
1. A fuel cell capable of making full use of hydrogen and oxidant comprises a battery pack, a hydrogen cylinder, an oxidant cylinder and a cooling water circulation system, wherein the battery pack comprises a hydrogen inlet, an oxidant inlet, a generated water outlet, a cooling water inlet and a cooling water outlet, a hydrogen pressure reducing valve is arranged at the outlet of the hydrogen cylinder, an oxidant pressure reducing valve is arranged at the outlet of the oxidant cylinder, and the fuel cell is characterized in that the cooling water circulation system comprises one or two water suction pumps, one or two water tanks and a circulation water pump, wherein the water suction pumps comprise an inner shell and an outer shell, a jacket is formed between the inner shell and the outer shell, a water inlet is arranged at the top of the inner shell and is connected with the cooling water outlet of the battery pack, a throttling port is arranged at the bottom of the inner shell and is communicated with the jacket, a water spraying port is arranged at the bottom of the outer shell and is communicated with, the upper part of the side of the shell is provided with an air suction port, one end of the air suction port is connected with a generated water outlet of the battery pack, the other end of the air suction port is communicated with the jacket, when cooling water of the battery pack is discharged into the water tank through the water suction pump at a high speed, the air suction port of the water suction pump can suck out the generated water in the battery pack and bring the generated water into the water tank, the circulating water pump is arranged between the outlet of the water tank and the cooling water inlet of the battery pack, and the circulating water pump provides power for the circulation of.
2. The fuelcell according to claim 1, wherein the oxidant is oxygen, the one or two water pumps are a first water pump and a second water pump, the one or two water tanks are a first water tank and a second water tank, the produced water outlet includes a first produced water outlet and a second produced water outlet, the first water pump is disposed in the first water tank, an air inlet of the first water pump is connected to the first produced water outlet, the second water pump is disposed in the second water tank, an air inlet of the second water pump is connected to the second produced water outlet, and outlets of the first water tank and the second water tank are connected in parallel and then connected to an inlet of the circulating water pump.
3. The fuel cell according to claim 1, wherein the hydrogen gas and the oxidizing agent are fully utilized, it is characterized in that the oxidant is oxygen, the one to two water suction pumps are two water suction pumps which are respectively a first water suction pump and a second water suction pump, the one to two water tanks are a first water tank and a second water tank respectively, the generated water outlet comprises a first generated water outlet and a second generated water outlet, the water spray opening of the first water suction pump is arranged in the first water tank, the rest part is arranged outside the first water tank, the air suction port of the first water suction pump is connected with the first produced water outlet, the water spray port of the second water suction pump is arranged in the second water tank, the rest part is arranged outside the second water tank, the air suction port of the second water suction pump is connected with the second generated water outlet, and the outlets of the first water tank and the second water tank are connected in parallel and then connected with the inlet of the circulating water pump.
4. A fuel cell for making efficient use of hydrogen and an oxidant according to claim 2 or 3, wherein said first and second water tanks are integrally formed with each other with an intermediate partition.
5. The fuel cell of claim 1, wherein the oxidant is air, the one or two water pumps are water pumps, the one or two water tanks are water tanks, and the water pumps are disposed in the water tanks.
6. The fuel cell of claim 1, wherein the oxidant is air, the one or two water pumps are one water pump, the one or two water tanks are one water tank, the water outlet of the water pump is disposed in the water tank, and the rest of the water pump is disposed outside the water tank.
7. The fuel cell of claim 1, wherein the water tank is provided at an upper side thereof with a hydrogen or oxidant recovery port connected to a hydrogen inlet or an oxidant inlet of the stack.
8. The fuel cell of claim 1, wherein the water pump is made of teflon engineering plastic or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01239079U CN2473751Y (en) | 2001-04-27 | 2001-04-27 | Fuel battery capable of full use of hydrogen and oxidant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01239079U CN2473751Y (en) | 2001-04-27 | 2001-04-27 | Fuel battery capable of full use of hydrogen and oxidant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473751Y true CN2473751Y (en) | 2002-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01239079U Expired - Fee Related CN2473751Y (en) | 2001-04-27 | 2001-04-27 | Fuel battery capable of full use of hydrogen and oxidant |
Country Status (1)
| Country | Link |
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| CN (1) | CN2473751Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355600C (en) * | 2002-09-10 | 2007-12-19 | 亚太燃料电池科技股份有限公司 | Electric locomotive using fueling battery |
-
2001
- 2001-04-27 CN CN01239079U patent/CN2473751Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355600C (en) * | 2002-09-10 | 2007-12-19 | 亚太燃料电池科技股份有限公司 | Electric locomotive using fueling battery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |