CN2588554Y - Carrent leading polar board structure for fuel battery - Google Patents
Carrent leading polar board structure for fuel battery Download PDFInfo
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- CN2588554Y CN2588554Y CN02283431U CN02283431U CN2588554Y CN 2588554 Y CN2588554 Y CN 2588554Y CN 02283431 U CN02283431 U CN 02283431U CN 02283431 U CN02283431 U CN 02283431U CN 2588554 Y CN2588554 Y CN 2588554Y
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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 current leading polar plate structure for a fuel battery. The utility model comprises a current leading polar plate main body which is provided with fluid holes which can be used for circulating the inlet and the outlet of air, hydrogen, and cooling water, and current leading grooves which are connected between the inlet and the outlet holes. The number of the fluid holes of the inlet and outer air or hydrogen is one pair of more than one pair, and the current leading grooves which are arranged between one pair or more than one pair of inlet and outlet fluid holes form a plurality of parallel wave shapes or curve shapes. The utility model has the characteristics the current leading grooves can be prevented from being blocked, the operating stability of the fuel battery can be improved, etc.
Description
Technical Field
The utility model relates to a fuel cell especially relates to a can improve fuel cell operating stability's water conservancy diversion polar plate structure.
Background
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 on the 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 (MEA) is generally placed between two conductive plates, and the surface of each guiding plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more guiding grooves. The guide electrode plates can be plates made of metal materials or plates made of graphite materials. The diversion pore canals and the diversion grooves on the diversion electrode 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 a current flow collection mother plate and mechanical supports at two sides of the membrane electrode, and 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 proton exchange membrane fuel cell can be used as a power system of all vehicles, ships and other vehicles, and can also be used as a portable, movable and fixed power generation device. The pem fuel cell power generation system must include fuel cell stack, hydrogen supply, air supply, cooling, automatic control, and power output. The stability and reliability of operation of pem fuel cells are very important for applications as vehicle, marine power systems or mobile power plants. Wherein improving the operational stability and reliability of the fuel cell stack is critical.
At present, the proton exchange membrane fuel cell stack generally adopts the effective utilization area of a sacrificial polar plate on the design of each fluid channel, fluid holes are arranged at the same positions of each membrane electrode and the polar plate, and each membrane electrode and each polar plate are overlapped to form each fluid channel. That is, each membrane electrode and polar plate are provided with fluid holes for fuel inlet, fuel outlet, oxidant inlet, oxidant outlet, cooling fluid inlet and cooling fluid outlet, the membrane electrodes and the flow guide polar plates are vertically superposed to form a fuel cell pack, and the fluid holes form fuel inlet and outlet inside the fuel cell pack; oxidant inlet and outlet; the cooling fluid enters and exits the fluid guide channels, and the fluid guide channels are integrated on the front or rear end plate of the fuel cell stack to form a fuel inlet, a fuel outlet, an oxidant inlet, an oxidant outlet, a cooling fluid inlet and a cooling fluid outlet.
For example: the designs of two fuel cell flow directing plates used by Ballard Power Systems, Us patent5,773,160 and Us patent5,840,438 are shown in fig. 1 and 2, wherein 1 and 2 are flow directing plates of the fuel cells, respectively, and electrodes used therein are shown in fig. 3, 3 in fig. 3 is a membrane electrode, which is assembled into a corresponding fuel cell stack as shown in fig. 4, fig. 5 is an anatomical view of the fuel cell stack of fig. 4, and fig. 6 is an anatomical view of the fuel cell stack using the flow directing plates of fig. 2.
The design of the fluid holes and the diversion trenches of the diversion pole plates in the fuel cell stack has the following characteristics:
1. in order to combine a large number (up to one to two hundred) of guide plates and electrodes into a fuel cell stack, the fluid holes in the guide plates are often designed to have a large area, especially the fluid holes of oxidant air, because the air flow needs to be large, the fluid hole area is also large, so that the volume of the fluid hole channels in the stack of the cell is large enough, and the fluid with a large enough flow can be uniformly distributed on each guide plate.
2. In order to increase the rapid diffusion of fuel hydrogen and oxidant air to the electrode reaction zone on both sides of the electrode, the flow guide grooves on the flow guide polar plate are often designed into serpentine or bent shapes, so that the fluid forms turbulent flow through the flow guide grooves, which is beneficial to the diffusion to the electrode internal reaction zone.
The flow passage and flow guide groove of the flow guide polar plate in the fuel cell stack are designed with the following technical defects:
the flow holes on the flow guide polar plate have larger area, each fluid flows in from the inlet flow hole, and generally needs to be bent and bent along more than one flow guide groove to wind the whole flow guide field, and all the flow guide grooves flow out from the outlet flow hole together. Because more than one diversion trench has large flexibility and longer diversion trench length, the product water generated by the fuel cell is easy to appear on the cathode side of the electrode to block the air diversion trench, and the product water generated by the fuel cell is also easy to appear on the anode side of the electrode through reverse osmosis to block the hydrogen diversion trench. Especially when the fuel cell is used as a vehicle or ship power system or a movable power generation device, the working condition of the power system is greatly changed, the output power of the fuel cell is also greatly changed, and thus the air and hydrogen guide grooves are easily blocked by water generated by the fuel cell. In addition, in order to prevent the water generated by the fuel cell from blocking the diversion trench, the operation method of increasing the air-hydrogen metering ratio of the fuel cell operation is often adopted, that is, the air and hydrogen flow rate is increased, and the product water is carried out of the fuel cell by using excessive air and hydrogen.
And thirdly, when the air diversion groove or the hydrogen diversion groove of the diversion polar plate of the fuel cell is blocked in operation, the voltage of the blocked cell is very low or even has a negative value, so that the operation of the fuel cell is unstable, the electrode can be punctured in serious conditions, and the whole cell stack is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fuel cell's water conservancy diversion polar plate structure that can prevent that the guiding gutter from blockking up, improving battery operating stability in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme: a flow guide polar plate structure of a fuel cell comprises a flow guide polar plate body, wherein the flow guide polar plate body is provided with fluid holes for air inlet and outlet, hydrogen inlet and outlet and cooling water circulation, and a flow guide groove connected between the fluid inlet and outlet holes; it is characterized in that the air inlet and outlet or hydrogen inlet and outlet fluid holes are one or more pairs, and the diversion grooves arranged between the one or more pairs of air inlet and outlet fluid holes are in a plurality of parallel wave shapes or curved shapes.
The flow guide polar plate body is an air flow guide plate or a hydrogen flow guide plate or a flow guide bipolar plate which is formed by combining the air flow guide plate and the hydrogen flow guide plate back into a whole; the air guide flow plate is provided with a pair of air inlet and outlet fluid holes, and a plurality of parallel wavy air guide flow grooves are arranged between the pair of fluid holes; the hydrogen guide flow plate is provided with a pair of fluid holes for hydrogen inlet and outlet, and a plurality of parallel wavy hydrogen guide flow grooves are arranged between the pair of fluid holes.
The flow guide polar plate body is an air flow guide plate or a hydrogen flow guide plate or a flow guide bipolar plate which is formed by combining the air flow guide plate and the hydrogen flow guide plate back into a whole; the air guide flow plate is provided with a plurality of pairs of air inlet and outlet fluid holes, and a plurality of parallel wavy air guide flow grooves are arranged between the plurality of pairs of fluid holes; the hydrogen guide flow plate is provided with a plurality of pairs of flow holes for feeding and discharging hydrogen, and a plurality of parallel wavy hydrogen guide flow grooves are arranged between the plurality of pairs of flow holes.
The flow guide polar plate body is an air flow guide plate or a hydrogen flow guide plate or a flow guide bipolar plate which is formed by combining the air flow guide plate and the hydrogen flow guide plate back into a whole; the air guide flow plate is provided with a pair of air inlet and outlet flow holes, wherein the air inlet flow hole is divided into a plurality of air guide flow grooves, the air guide flow grooves are divided into a plurality of parallel wavy branch air guide flow grooves, the branch air guide flow grooves are converged into a plurality of air guide flow grooves at the other end, and the air guide flow grooves enter the air outlet flow hole together; the hydrogen guide flow plate is provided with a pair of flow holes for feeding and discharging hydrogen, wherein the flow hole for feeding the hydrogen is divided into a plurality of hydrogen guide flow grooves, the hydrogen guide flow grooves are divided into a plurality of branch hydrogen guide flow grooves in parallel wavy shape, the branch hydrogen guide flow grooves are converged into a plurality of hydrogen guide flow grooves at the other end, and the hydrogen guide flow grooves enter the flow hole for discharging the hydrogen.
The diversion grooves of the diversion air flow plate on one side and the diversion grooves of the hydrogen flow plate on the other side are arranged in a 90-degree crossed manner.
The flow guide grooves of the air flow guide plate on one side and the flow guide grooves of the hydrogen flow guide plate on the other side are arranged in parallel in the forward direction or the reverse direction.
Compared with the prior art, the utility model is characterized in that the inlet of the same fluid on the flow guide polar plate does not flow in from a single flow guide inlet fluid hole with a large area, and winds around along the whole flow guide field in a bending way, and then flows out from a single flow guide outlet fluid hole with a large area; but flows in from a small flow guide inlet with small area or a flow guide inlet with a shape, flows out along a plurality of flow guide grooves which are bentand parallel, and respectively enters a plurality of small flow guide outlets or enters a flow guide outlet with a shape, as shown in figure 7, 4 and 5 in figure 7 are respectively an inlet-outlet fluid hole and a flow guide groove. Or a plurality of narrow flow guide grooves are formed, each narrow flow guide groove is branched into a plurality of bent branch flow guide grooves, the branch flow guide grooves are converged to the narrow flow guide grooves, and finally, the plurality of narrow flow guide grooves enter the outlet together as shown in fig. 15. The same fluid in figure 8 flows in from four inlet fluid ports 4 and along a plurality of curved, parallel channels 5 into four outlet fluid ports 4, which join into a single inlet or outlet fluid port on the face of the stack.
The novel design of the fluid pore channel and the diversion trench of the diversion polar plate of the fuel cell has the following advantages:
the same fluid hole is composed of a narrow strip or a plurality of narrow strips, so that the situation that the effective utilization area on an electrode or a flow guide polar plate is increased due to the adoption of a large-area fluid hole is avoided, more important same fluid can flow through a plurality of flow guide grooves which are parallel to each other and are bent, the flow guide grooves are not easily blocked by water generated by the fuel cell, and the flow guide grooves are bent, so that the fluid can generate flocculent flow and is favorable for diffusion to an electrode reaction area.
Drawings
FIG. 1 is a schematic structural diagram of a conventional flow guide plate;
FIG. 2 is a schematic structural diagram of another conventional flow guide plate;
FIG. 3 is a schematic structural diagram of a conventional electrode;
FIG. 4 is a schematic structural diagram of a current-guiding plate and an assembled electrode;
FIG. 5 is the anatomical diagram of FIG. 4;
FIG. 6 is a schematic view of another prior art assembled flow guide plate and electrode;
fig. 7 is a schematic structural view of a flow guide polar plate of the present invention;
fig. 8 is a schematic structural view of another flow guide plate of the present invention;
fig. 9 is a schematic structural view of an air deflector of a flow guiding bipolar plate according to embodiment 1 of the present invention;
fig. 10 is a schematic structural view of a hydrogen gas flow guide plate of a flow guide bipolar plate according to embodiment 1 of the present invention;
fig. 11 is a schematic structural view of an air deflector of a flow-guiding bipolar plate according to embodiment 2 of the present invention;
fig. 12 is a schematic structural view of a hydrogen gas flow guide plate of a flow guide bipolar plate according to embodiment 2 of the present invention;
fig. 13 is a schematic structural view of an air deflector of a flow-guiding bipolar plate according to embodiment 3 of the present invention;
fig. 14 is a schematic structural view of a hydrogen gas flow guide plate of a flow guide bipolar plate according to embodiment 3 of the present invention;
fig. 15 is a schematic structural view of a hydrogen gas flow guide plate of a flow guide bipolar plate according to embodiment 4 of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
As shown in fig. 9 and 10, a flow guide plate structure of a fuel cell includes a flow guide plate body, which is a flow guide bipolar plate, and has an air flow guide plate a on one side and a hydrogen flow guide plate B on the other side; the air guide flow plate is provided with four pairs of air inlet and outlet fluid holes 6, and three parallel wavy air guide flow grooves 7 are arranged between the four pairs of fluid holes 6; the hydrogen guide flow plate is provided with three pairs of hydrogen inlet and outlet flow holes 8, three parallel wavy hydrogen guide flow grooves 9 are arranged between the three pairs of flow holes 8, and the flow guide bipolar plate is provided with a pair of cooling water inlet and outlet flow holes 10.
The flow guide bipolar plate adopts a design that four pairs of air inlets and outlets and three pairs of hydrogen inlets and outlets are mutually spaced and respectively concentrated on the upper end and the lower end of the flow guide polar plate.
Example 2
As shown in fig. 11 and 12, a flow guide plate structure of a fuel cell includes a flow guide plate body, which is a flow guide bipolar plate, and has an air flow guide plate a on one side and a hydrogen flow guide plate B on the other side; the air guide flow plate is provided with five pairs of air inlet and outlet fluid holes 6, and three parallel wavy air guide flow grooves 7 are arranged between the five pairs of fluid holes 6; the hydrogen guide flow plate is provided with four pairs of hydrogen inlet and outlet flow holes 8, three parallel wavy hydrogen guide flow grooves 9 are arranged between the four pairs of flow holes 8, and the flow guidebipolar plate is provided with a pair of cooling water inlet and outlet flow holes 10.
The flow guide bipolar plate adopts a design that five pairs of air inlets and outlets and four pairs of hydrogen inlets and outlets are respectively concentrated on the left side and the right side as well as the upper end and the lower end of the flow guide bipolar plate; the guide groove 7 of the air flow guide plate on one side and the guide groove 9 of the hydrogen flow guide plate on the other side are arranged in a 90-degree crossed manner.
Example 3
As shown in fig. 13 and 14, a flow guide plate structure of a fuel cell includes a flow guide plate body, which is a flow guide bipolar plate, and has an air flow guide plate a on one side and a hydrogen flow guide plate B on the other side; the air guide flow plate is provided with a pair of air inlet and outlet flow holes 6, and two air guide flow grooves 7 which are arranged in a snake-shaped parallel manner are arranged between the pair of flow holes 6; the hydrogen guide flow plate is provided with five pairs of hydrogen inlet and outlet flow holes 8, three parallel wavy hydrogen guide flow grooves 9 are arranged between the five pairs of flow holes 8, and the flow guide bipolar plate is provided with a pair of cooling water inlet and outlet flow holes 10.
The flow guide bipolar plate adopts a pair of air inlet and outlet and five pairs of hydrogen inlet and outlet which are respectively concentrated on the upper end, the lower end, the left side and the right side of the flow guide bipolar plate; the guide groove 7 of the air flow guide plate on one side and the guide groove 9 of the hydrogen flow guide plate on the other side are arranged in a 90-degree crossed manner.
Example 4
As shown in fig. 15, a flow guide plate structure of a fuel cell includes a flow guide plate body, which is a flow guide bipolar plate, and includes a hydrogen guide flow plate B on one side and an air guide flow plate a (not shown) on the other side; the hydrogen guiding flow plate is provided with a pair of hydrogen inlet and outlet flow holes 8, wherein the hydrogen inlet flow holes are divided into four hydrogen guiding flow grooves 9, the four hydrogen guiding flow grooves are respectively divided into three to four parallel wavy branched hydrogen guiding flow grooves 11, the branched hydrogen guiding flow grooves 11 are converged into the four hydrogen guiding flow grooves at the other end, and the four hydrogen guiding flow grooves enter the hydrogen outlet flow holes 8; the air guide flow plate is provided with a pair of air inlet and outlet flow holes, and the structure of the air guide flow plate is the same as that of the hydrogen guide flow plate.
The flow guide bipolar plate is divided into a plurality of narrow strip-shaped flow guide grooves by using air and hydrogen respectively at an inlet, then the narrow strip-shaped flow guide grooves are branched into a plurality of wave-shaped branch flow guide grooves, and finally the wave-shaped branch flow guide grooves are converged into the narrow strip-shaped flow guide grooves and then are merged into an outlet.
Claims (6)
1. A flow guide polar plate structure of a fuel cell comprises a flow guide polar plate body, wherein the flow guide polar plate body is provided with fluid holes for air inlet and outlet, hydrogen inlet and outlet and cooling water circulation, and a flow guide groove connected between the fluid inlet and outlet holes; it is characterized in that the air inlet and outlet or hydrogen inlet and outlet fluid holes are one or more pairs, and the diversion grooves arranged between the one or more pairs of air inlet and outlet fluid holes are in a plurality of parallel wave shapes or curved shapes.
2. The fuel cell flow guiding plate structure of claim 1, wherein the flow guiding plate body is an air flow guiding plate or a hydrogen flow guiding plate or a flow guiding bipolar plate formed by combining the air flow guiding plate and the hydrogen flow guiding plate back into a whole; the air guide flow plate is provided with a pair of air inlet and outlet fluid holes, and a plurality of parallel wavy air guide flow grooves are arranged between the pair of fluid holes; the hydrogen guide flow plate is provided with a pair of fluid holes for hydrogen inlet and outlet, and a plurality of parallel wavy hydrogen guide flow grooves are arranged between the pair of fluid holes.
3. The fuel cell flow guiding plate structure of claim 1, wherein the flow guiding plate body is an air flow guiding plate or a hydrogen flow guiding plate or a flow guiding bipolar plate formed by combining the air flow guiding plate and the hydrogen flow guiding plate back into a whole; the air guide flow plate is provided with a plurality of pairs of air inlet and outlet fluid holes, and a plurality of parallel wavy air guide flow grooves are arranged between the plurality of pairs of fluid holes; the hydrogen guide flow plate is provided with a plurality of pairs of flow holes for feeding and discharging hydrogen, and a plurality of parallel wavy hydrogen guide flow grooves are arranged between the plurality of pairs of flow holes.
4. The fuel cell flow guiding plate structure of claim 1, wherein the flow guiding plate body is an air flow guiding plate or a hydrogen flow guiding plate or a flow guiding bipolar plate formed by combining the air flow guiding plate and the hydrogen flow guiding plate back into a whole; the air guide flow plate is provided with a pair of air inlet and outlet flow holes, wherein the air inlet flow hole is divided into a plurality of air guide flow grooves, the air guide flow grooves are divided into a plurality of parallel wavy branch air guide flow grooves, the branch air guide flow grooves are converged into a plurality of air guide flow grooves at the other end, and the air guide flow grooves enter the air outlet flow hole together; the hydrogen guide flow plate is provided with a pair of flow holes for feeding and discharging hydrogen, wherein the flow hole for feeding the hydrogen is divided into a plurality of hydrogen guide flow grooves, the hydrogen guide flow grooves are divided into a plurality of branch hydrogen guide flow grooves in parallel wavy shape, the branch hydrogen guide flow grooves are converged into a plurality of hydrogen guide flow grooves at the other end, and the hydrogen guide flow grooves enter the flow hole for discharging the hydrogen.
5. The fuel cell flow-guide plate structure of claim 2, 3 or 4, wherein the flow-guide grooves of the flow-guide plate on one side of the flow-guide bipolar plate are arranged to intersect with the flow-guide grooves of the hydrogen-guide plate on the other side of the flow-guide bipolar plate at 90 °.
6. The fuel cell flow-guiding plate structure of claim 2, 3 or 4, wherein the flow-guiding grooves of the flow-guiding plate on one side and the flow-guiding grooves of the hydrogen-guiding plate on the other side are arranged in parallel in a forward or reverse direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02283431U CN2588554Y (en) | 2002-12-20 | 2002-12-20 | Carrent leading polar board structure for fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02283431U CN2588554Y (en) | 2002-12-20 | 2002-12-20 | Carrent leading polar board structure for fuel battery |
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| Publication Number | Publication Date |
|---|---|
| CN2588554Y true CN2588554Y (en) | 2003-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02283431U Expired - Lifetime CN2588554Y (en) | 2002-12-20 | 2002-12-20 | Carrent leading polar board structure for fuel battery |
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| Country | Link |
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| CN (1) | CN2588554Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473692A (en) * | 2017-09-08 | 2019-03-15 | 徐煜 | The metal double polar plates of Proton Exchange Membrane Fuel Cells |
| CN109904484A (en) * | 2019-03-01 | 2019-06-18 | 山东大学 | A kind of fuel cell bipolar plate structure and fuel cell |
-
2002
- 2002-12-20 CN CN02283431U patent/CN2588554Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473692A (en) * | 2017-09-08 | 2019-03-15 | 徐煜 | The metal double polar plates of Proton Exchange Membrane Fuel Cells |
| CN109904484A (en) * | 2019-03-01 | 2019-06-18 | 山东大学 | A kind of fuel cell bipolar plate structure and fuel cell |
| CN109904484B (en) * | 2019-03-01 | 2020-12-04 | 山东大学 | Fuel cell bipolar plate structure and fuel cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090722 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |