CN203386845U - Fuel cell reaction product emission control system - Google Patents
Fuel cell reaction product emission control system Download PDFInfo
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- CN203386845U CN203386845U CN201320452871.8U CN201320452871U CN203386845U CN 203386845 U CN203386845 U CN 203386845U CN 201320452871 U CN201320452871 U CN 201320452871U CN 203386845 U CN203386845 U CN 203386845U
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- fuel cell
- condenser
- master controller
- oxygen
- reaction product
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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 discloses a fuel cell reaction product emission control system. The fuel cell reaction product emission control system comprises an oxygen treatment control part connected with an oxygen exhaust hole of a fuel cell, a hydrogen treatment control part connected with a hydrogen exhaust hole of the fuel cell, and a master controller, wherein the oxygen treatment control part and the hydrogen treatment control part have the same structure; gas inlets are formed in condensers and are communicated with emission outlets of the fuel cell through pipelines; containing chambers for storing gas and water mixed emissions are formed on the bottoms of the condensers; water level float switches and thermoelectric couples are arranged in the containing chambers of the condensers; water discharging solenoid valves are connected with the bottoms of the containing chambers; fans are arranged on the condensers and are electrically connected with cooling temperature controllers through silicon controlled rectifiers. According to the fuel cell reaction product emission control system, the condensers can be automatically controlled to cool reaction products of the fuel cell and water separated from the reaction products is controlled to be discharged automatically according to the setting of a user.
Description
Technical field
The utility model relates to the Fuel Cell Control technical field, is specifically related to a kind of fuel cell reaction product emission control systems.
Background technology
Fuel cell is a kind ofly can will be stored in chemical energy in hydrogen fuel and oxidant and be converted into the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of electric energy, but its can produce air-water mixture after electrochemical reaction.In the design of fuel battery test system, how to process the product that the fuel cell test process produces, become problem demanding prompt solution.
Creator of the present utility model has necessity of improvement in view of the conventional fuel cell test macro to the processing of fuel cell reaction product, and proposes a kind of solution that can effectively solve fuel cell reaction product emission problem.
The utility model content
The purpose of this utility model is to provide a kind of fuel cell reaction product emission control systems: can, according to user's setting, automatically control condenser and carry out cooling to the fuel cell reaction product; And automatically control the water of separating and discharged from product.
The utility model realizes that the technical solution of above-mentioned purpose is: a kind of fuel cell reaction product emission control systems comprises the oxygen treatments applied control section that is connected in fuel cell oxygen outlet, hydrogen treat control section, the master controller that is connected in the fuel cell hydrogen outlet; Described master controller comprises central processing unit, communication module, output module; The composition structure of described oxygen treatments applied control section and described hydrogen treat control section is identical, comprises separately condenser, thermostat, thermocouple, controllable silicon, fan, water level float switch, drain solenoid valve;
Described condenser is provided with air inlet, and the exhaust outlet of this air inlet and fuel cell passes through pipeline connection; The condenser bottom all has for storing the room of mixing wastewater with air emission, and water level float switch and the installation of TC are in the room of condenser; Drain solenoid valve is connected in the bottom of room; Provided with fan on condenser, fan is electrically connected to cooling thermostat through controllable silicon;
Described master controller is expanded the RS485 bus by communication module and communicated with thermostat: described water level float switch is electrically connected to the input module in master controller; Described drain solenoid valve is electrically connected to the output module in master controller.
The utility model also comprises pressure transmitter, counterbalance valve; The top of described condenser is provided with exhaust outlet, and pressure transmitter is installed on the top of condenser, and described master controller expands the RS485 bus by communication module and pressure transmitter communicates; The air inlet that the top of condenser is provided with exhaust outlet and counterbalance valve passes through pipeline connection; The gas outlet of described counterbalance valve is communicated with atmosphere.
Housing on condenser described in the utility model all has the heat sink of the area of dissipation for increasing air-water mixture.
The utility model also comprises human-computer interface module, and described human-computer interface module is electrically connected to the driver module in master controller, for user and system are provided, carries out the interface of man-machine interaction.
Be connected with respectively on drain solenoid valve described in the utility model, water level float switch and show the indicator light of operating state separately.
Compared with prior art, the utlity model has following beneficial effect:
The first, the utility model adopts the mode of collecting and distributing control, by master controller, the cooling control of hydrogen gas condenser and oxygen condenser is distributed to corresponding controller and independently controls, and has greatly improved the real-time of controlling.
The second, the utility model provides by the time interval controls condenser draining of setting, and meets the different demands of user, and the condenser water level reaches specified altitude assignment, just forced drainage, and anti-sealing overflows or flows backwards.
The 3rd, the utility model provides the comprehensive information of each switching value of system, physical quantity, quantity of state to the user by indicator light and man-machine interface, allows user's more convenient operation.
The accompanying drawing explanation
Fig. 1 is system syndeton schematic diagram of the present utility model;
Fig. 2 is electrical connection theory diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1 and Figure 2, the utility model comprises and follows condenser 2 and 15, fan 3 and 14, pressure transmitter 4 and 13, counterbalance valve 5 and 12, thermocouple 6 and 11, water level float switch 7 and 10, drain solenoid valve 8 and 9, thermostat 16 and 17, controllable silicon 18 and 19, man-machine interface 20, indicator light 21～24, master controller 25; Described master controller 25 comprises central processing unit 26, input module 27, output module 28, communication module 29, driver module 30.
Fuel cell 1 comprises hydrogen inlet, hydrogen outlet, oxygen inlet, oxygen outlet.Described condenser 2,15 is respectively used to realize the gas-water separation from the product of fuel cell 1 hydrogen outlet and oxygen outlet discharge; Described condenser 2,15 all has the mounting interface of an air inlet, an exhaust outlet, a discharge outlet, a pressure transmitter, the mounting interface of a liquid-level floater switch, the mounting interface of a thermocouple; The housing of described condenser 2,15 all has heat sink, for increasing the area of dissipation of air-water mixture; The bottom of described condenser 2,15 all has room, for storing water.
The hydrogen outlet of the air inlet of described condenser 2 and fuel cell 1 passes through pipeline connection; The air inlet of the exhaust outlet of described condenser 2 and counterbalance valve 5 passes through pipeline connection; The gas outlet of described counterbalance valve 5 is communicated with atmosphere; Described counterbalance valve 5 flows out the pressure of fuel cell 1 for regulating hydrogen;
The top setting pressure transmitter 4 of described condenser 2, described pressure transmitter 4 flows out the pressure of fuel cell 1 for detection of hydrogen.
The water inlet of the discharge outlet of described condenser 2 and drain solenoid valve 8 passes through pipeline connection; Delivery port and the water container of described drain solenoid valve 8 pass through pipeline connection.
Provided with fan 3 on described condenser 2, fan 3 is electrically connected to thermostat 16 through controllable silicon 18.
Described condenser 2 bottom rooms are installed thermocouple 6, and are electrically connected to thermostat 16.
Described condenser 2 bottom rooms are installed water level float switch 7, and are electrically connected to the input module 27 in master controller 25, and master controller 25 obtains the on off state of water level float switch 7 by input module 27; The open and close state representation water level of float switch water, anhydrous state arranged.
Pipeline connection is passed through in the oxygen gas outlet of the air inlet of described condenser 15 and fuel cell 1; The air inlet of the exhaust outlet of described condenser 15 and counterbalance valve 12 passes through pipeline connection; The gas outlet of described counterbalance valve 12 is communicated with atmosphere; Described counterbalance valve 12 flows out the pressure of fuel cell 1 for regulating oxygen;
The top setting pressure transmitter 13 of described condenser 15, described pressure transmitter 13 flows out the pressure of fuel cell 1 for detection of oxygen.
The water inlet of the discharge outlet of described condenser 15 and drain solenoid valve 9 passes through pipeline connection; Delivery port and the water container of described drain solenoid valve 9 pass through pipeline connection.
Provided with fan 14 on described condenser 15, fan 14 is electrically connected to thermostat 17 through controllable silicon 19.
Described condenser 15 bottom rooms are installed thermocouple 11, and are electrically connected to thermostat 17.
Described condenser 15 bottom rooms are installed water level float switch 10, and are electrically connected to the input module 27 in master controller 25, and master controller 25 obtains the on off state of water level float switch 10 by input module 27; The open and close state representation water level of float switch water, anhydrous state arranged.
Described drain solenoid valve 8,9 is electrically connected to the output module 28 in master controller 25, and master controller 25 is realized the switch control of drain solenoid valve 8,9 by output module 28.
Described master controller 25, by communication module 29 expansion RS485 buses, is set up and pressure transmitter 4,13 bridge of thermostat 16,17 communications.
Described man-machine interface 20 is electrically connected to the driver module 30 in master controller 25, for user and system are provided, carries out the interface of man-machine interaction;
Described indicator light 21 is electrically connected to water level float switch 7, and what be used to indicate condenser 2 middle water levels has water, an anhydrous state: when water level has water, indicator light 21 brightens; When water level is anhydrous, indicator light 21 extinguishes.
Described indicator light 22 is electrically connected to water level float switch 10, and what be used to indicate condenser 15 middle water levels has water, an anhydrous state: when water level has water, indicator light 22 brightens; When water level is anhydrous, indicator light 22 extinguishes.
Described indicator light 23 is electrically connected to drain solenoid valve 8, is used to indicate the on off state of drain solenoid valve 8: when water drain solenoid valve 8 is opened, indicator light 23 brightens; When drain solenoid valve 8 is closed, indicator light 23 extinguishes.
Described indicator light 24 is electrically connected to drain solenoid valve 9, is used to indicate the on off state of drain solenoid valve 9: when water drain solenoid valve 9 is opened, indicator light 24 brightens; When drain solenoid valve 9 is closed, indicator light 24 extinguishes.
The central processing unit 26 of master controller 25 of the present utility model can be selected general single-chip microcomputer or microprocessor; Described man-machine interface 20 can be selected touch-screen commonly used, or forms man-machine interface 20 by liquid crystal commonly used and keyboard; Described water level float switch 7,10 can be selected conventional water level float switch; Described drain solenoid valve 8,9 is mainly selected liquid electromagnetic valve according to medium temperature, proof pressure, these parameters of pipe diameter; Described indicator light 21,22,23,24 selects conventional indicator light to get final product; Described condenser 2,15 flow of the product of fuel cell hydrogen outlet and oxygen outlet respectively designs the condenser of suitable heat-sinking capability; Described thermostat 16,17 selects the conventional thermostat with the RS485 communication interface to get final product; Described thermocouple 6,11 selects conventional thermocouple to get final product; Described fan 3,14 is selected fan commonly used according to the requirement of condenser 2,15 heat-sinking capabilities respectively; Described controllable silicon 18,19 is selected controllable silicon commonly used according to the power of fan 3,14 respectively; Described pressure transmitter 4,13 mainly carrys out the pressure transmitter of select tape RS485 communication interface according to medium temperature, maximum pressure, these parameters of pressure interface; Described counterbalance valve 5,12 fuel cell hydrogen outlet and oxygen outlet pressure adjustable range is respectively selected pressure-regulating valve commonly used.
Operation principle of the present utility model:
The initial condition that native system powers on: drain solenoid valve 8,9 is all in closed condition; Thermostat 16,17 is all in forbidding the state of cooling; Counterbalance valve 5,12 keeps the state before outage.
Native system has following function: cooling control, draining control, back pressure control, data acquisition, data show.The operation principle of each function is as follows:
(1) cooling control
When the user sets the cooling control temperature of hydrogen gas condenser 2 and oxygen condenser 15 by described man-machine interface 20: at first master controller 25 obtains user's request by driver module 30, then master controller 25 is communicated by letter with thermostat 16,17 by communication module 29, sets the control temperature of thermostat 16,17.
When the user allows thermostat 16 by described man-machine interface 20, 17 while carrying out cooling control: at first master controller 25 obtains user's request by driver module 30, then master controller 25 is by communication module 29 and thermostat 16, 17 communications, allow thermostat 16, the following rule of 17 basis completes the cooling control of air-water mixture in hydrogen gas condenser 2 and oxygen condenser 15: wherein thermostat 16 is by the Current Temperatures of air-water mixture in thermocouple 6 periodic monitor hydrogen gas condensers 2, when design temperature is less than Current Temperatures, thermostat 16 is undertaken air-cooled by 3 pairs of condensers of controllable silicon 18 drive fan 2, accelerating air-water mixture is dispelled the heat by condenser 2, the air-water mixture temperature is reduced, thereby realize hydrogen, the separation of water, when design temperature is more than or equal to Current Temperatures, thermostat 16 stops cooling, wherein thermostat 17 is by the Current Temperatures of air-water mixture in thermocouple 11 periodic monitor oxygen condensers 15, when design temperature is less than Current Temperatures, thermostat 17 is undertaken air-cooled by 14 pairs of condensers of controllable silicon 19 drive fan 15, accelerating air-water mixture is dispelled the heat by condenser 15, the air-water mixture temperature is reduced, thereby realize the separation of oxygen, water, when design temperature is more than or equal to Current Temperatures, thermostat 17 stops cooling.
When the user forbids that by described man-machine interface 20 thermostat 16,17 carries out cooling control: at first master controller 25 obtains user's request by driver module 30, then master controller 25 is communicated by letter with thermostat 16,17 by communication module 29, forbids that thermostat 16,17 carries out cooling control.
(2) draining is controlled
When the user opens the draining control of hydrogen gas condenser 2 and oxygen condenser 15 by described man-machine interface 20 requests: at first master controller 25 obtains user's request by driver module 30; Then master controller 25 is by output module 28 opening water discharge electromagnetically operated valve 8,9 successively, and hydrogen gas condenser 2 starts draining with oxygen condenser 15.
When the user closes the draining control of hydrogen gas condenser 2 and oxygen condenser 15 by described man-machine interface 20 requests: at first master controller 25 obtains user's request by driver module 30; Then master controller 25 cuts out drain solenoid valve 8,9 successively by output module 28, and hydrogen gas condenser 2 stops draining with oxygen condenser 15.
When the user controls with the draining of oxygen condenser 15 by described man-machine interface 20 request circulating open close hydrogen gas condensers 2: at first master controller 25 obtains user's request by driver module 30; Then master controller 25 is by output module 28 opening water discharge electromagnetically operated valve 8,9 successively, and hydrogen gas condenser 2 starts draining with oxygen condenser 15; When the opening water discharge time, arrive, master controller 25 cuts out drain solenoid valve 8,9 successively by output module 28, and hydrogen gas condenser 2 stops draining with oxygen condenser 15; Arrive when closing water discharge time, be switched to again opening water discharge, so circulation is gone down.
In the draining control procedure, master controller 25 regularly (supposes out that state table is shown with water by the state of the water level float switch 7 in input module 27 monitoring hydrogen condensers 2 and the water level float switch 10 in oxygen condenser 15, off status means anhydrous): when monitoring water level float switch 7 water arranged, master controller 25 makes drain solenoid valve 8 in normally open by output module 28, hydrogen gas condenser 2 starts draining, once monitor water level float switch 7 from there being water to become anhydrous state again, hydrogen gas condenser 2 drainage patterns that master controller 25 is set according to the last user are controlled, in like manner, when monitoring water level float switch 10 water arranged, master controller 25 makes drain solenoid valve 9 in normally open by output module 28, oxygen condenser 15 starts draining, once monitor water level float switch 10 from there being water to become anhydrous state again, oxygen condenser 15 drainage patterns that master controller 25 is set according to the last user are controlled,
(3) data acquisition:
Described master controller 25 is regularly by communication module 29 and pressure transmitter 4,13, thermostat 16,17 communicates, read respectively the current pressure of fuel cell 1 hydrogen outlet and oxygen outlet, and the Current Temperatures of air-water mixture in hydrogen gas condenser 2 and oxygen condenser 15.
(4) data show:
Described master controller 25 regularly shows below data by driver module 30 in man-machine interface: fuel cell 1 hydrogen outlet current pressure; Fuel cell 1 oxygen outlet current pressure; The Current Temperatures of air-water mixture and target control temperature in hydrogen gas condenser 2; The Current Temperatures of air-water mixture and target control temperature in oxygen condenser 15; The draining control mode of hydrogen gas condenser 2 (often open, normally closed, circulating open close), if the circulating open close control mode, also comprise the target opening and closing time of setting, and current the unlatching and the current shut-in time; The draining control mode of oxygen condenser 15 (often open, normally closed, circulating open close), if the circulating open close control mode, also comprise the target opening and closing time of setting, and current the unlatching and shut-in time; Thermostat 16,17 cooling controls are in allowing or illegal state.
(5) back pressure is controlled
When manual adjustments hydrogen counterbalance valve 5, observe the fuel cell 1 hydrogen outlet current pressure shown on man-machine interface, when the hydrogen outlet pressure shown meets the required pressure of expection, stop regulating hydrogen counterbalance valve 5; In like manner, when manual adjustments oxygen counterbalance valve 12, observe the fuel cell 1 oxygen outlet current pressure shown on man-machine interface, when the oxygen outlet pressure shown meets the required pressure of expection, stop regulating oxygen counterbalance valve 12.
The native system operational instances:
Operational instances 1: by fuel cell and hydrogen source gas, oxygen source, and system connects, and system powers on, and enters init state.The user carries out discharge test to fuel cell, and according to working condition requirement, the user can set the cooling control temperature of hydrogen gas condenser and oxygen condenser and allow cooling control by man-machine interface.Along with test is carried out, in hydrogen gas condenser and oxygen condenser, the temperature of air-water mixture surpasses the target control temperature of setting, and corresponding thermostat is automatically controlled fan condenser is dispelled the heat, and accelerates the separation of gas, water.Along with hydrogen gas condenser and oxygen condenser bottom room middle water level all rise gradually, once the liquid-level floater switch indication light of hydrogen gas condenser and oxygen condenser brightens, hydrogen gas condenser and oxygen condenser start draining, and the drain solenoid valve indicator light that now can be observed hydrogen gas condenser and oxygen condenser brightens.Along with hydrogen gas condenser and oxygen condenser bottom room middle water level all descend gradually, once the liquid-level floater switch indication light of hydrogen gas condenser and oxygen condenser extinguishes, hydrogen gas condenser and oxygen condenser stop draining, and the drain solenoid valve indicator light that now can be observed hydrogen gas condenser and oxygen condenser extinguishes.
Operational instances 2: at the test process of fuel cell, the user can set the control mode work with circulating open close of hydrogen gas condenser and oxygen condenser drain solenoid valve by man-machine interface, when the water level indicator light of hydrogen gas condenser and oxygen condenser when extinguishing state, hydrogen gas condenser and oxygen condenser automatically with the pumpway of appointment every draining, the user can understand by man-machine interface and indicator light the operating state of hydrogen gas condenser and oxygen condenser drain solenoid valve.
Operational instances 3: at the test process of fuel cell, the user can regulate hydrogen and oxygen counterbalance valve on one side, observe fuel cell hydrogen and the oxygen outlet current pressure shown on man-machine interface on one side, when the hydrogen shown and the required pressure of the satisfied expection of oxygen outlet current pressure, can stop regulating hydrogen and oxygen counterbalance valve.
The utility model does not limit to and above-mentioned embodiment; according to foregoing; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite; the utility model can also be made equivalent modifications, replacement or the change of other various ways, all drops among protection range of the present utility model.
Claims (5)
1. a fuel cell reaction product emission control systems, is characterized in that: comprise the oxygen treatments applied control section that is connected in fuel cell oxygen outlet, hydrogen treat control section, the master controller that is connected in the fuel cell hydrogen outlet; Described master controller comprises central processing unit, communication module, output module; The composition structure of described oxygen treatments applied control section and described hydrogen treat control section is identical, comprises separately condenser, thermostat, thermocouple, controllable silicon, fan, water level float switch, drain solenoid valve;
Described condenser is provided with air inlet, and the exhaust outlet of this air inlet and fuel cell passes through pipeline connection; The condenser bottom all has for storing the room of mixing wastewater with air emission, and water level float switch and the installation of TC are in the room of condenser; Drain solenoid valve is connected in the bottom of room; Provided with fan on condenser, fan is electrically connected to cooling thermostat through controllable silicon;
Described master controller is expanded the RS485 bus by communication module and communicated with thermostat: described water level float switch is electrically connected to the input module in master controller; Described drain solenoid valve is electrically connected to the output module in master controller.
2. a kind of fuel cell reaction product emission control systems according to claim 1, characterized by further comprising pressure transmitter, counterbalance valve; The top of described condenser is provided with exhaust outlet, and pressure transmitter is installed on the top of condenser, and described master controller expands the RS485 bus by communication module and pressure transmitter communicates; The air inlet that the top of condenser is provided with exhaust outlet and counterbalance valve passes through pipeline connection; The gas outlet of described counterbalance valve is communicated with atmosphere.
3. a kind of fuel cell reaction product emission control systems according to claim 1 and 2, is characterized in that the housing on described condenser all has the heat sink of the area of dissipation for increasing air-water mixture.
4. a kind of fuel cell reaction product emission control systems according to claim 3, characterized by further comprising human-computer interface module, described human-computer interface module is electrically connected to the driver module in master controller, for user and system are provided, carries out the interface of man-machine interaction.
5. a kind of fuel cell reaction product emission control systems according to claim 4, is characterized in that on described drain solenoid valve, water level float switch being connected with respectively and show the indicator light of operating state separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452871.8U CN203386845U (en) | 2013-07-26 | 2013-07-26 | Fuel cell reaction product emission control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452871.8U CN203386845U (en) | 2013-07-26 | 2013-07-26 | Fuel cell reaction product emission control system |
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| CN203386845U true CN203386845U (en) | 2014-01-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684408A (en) * | 2016-08-30 | 2017-05-17 | 绍兴俊吉能源科技有限公司 | Gas-water separator for fuel cell |
| CN106884744A (en) * | 2017-04-14 | 2017-06-23 | 庞骏鹏 | Engine oxygen-enriched combustion device combustion method |
| CN107195927A (en) * | 2017-06-02 | 2017-09-22 | 浙江瀚广新能源科技有限公司 | A kind of gas pressure control system and method |
| CN112490473A (en) * | 2020-10-28 | 2021-03-12 | 广州汽车集团股份有限公司 | Dynamic water management system of electric pile of proton exchange membrane fuel cell and working method thereof |
-
2013
- 2013-07-26 CN CN201320452871.8U patent/CN203386845U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684408A (en) * | 2016-08-30 | 2017-05-17 | 绍兴俊吉能源科技有限公司 | Gas-water separator for fuel cell |
| CN106684408B (en) * | 2016-08-30 | 2023-07-14 | 绍兴俊吉能源科技有限公司 | Gas-water separator for fuel cell |
| CN106884744A (en) * | 2017-04-14 | 2017-06-23 | 庞骏鹏 | Engine oxygen-enriched combustion device combustion method |
| CN107195927A (en) * | 2017-06-02 | 2017-09-22 | 浙江瀚广新能源科技有限公司 | A kind of gas pressure control system and method |
| CN107195927B (en) * | 2017-06-02 | 2020-08-18 | 浙江瀚广新能源科技有限公司 | Gas pressure control system and method |
| CN112490473A (en) * | 2020-10-28 | 2021-03-12 | 广州汽车集团股份有限公司 | Dynamic water management system of electric pile of proton exchange membrane fuel cell and working method thereof |
| CN112490473B (en) * | 2020-10-28 | 2022-09-27 | 广州汽车集团股份有限公司 | Dynamic water management system of electric pile of proton exchange membrane fuel cell and working method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20180726 |