CN208522039U - Proton exchange membrane h2 fuel cell stack output protecting device - Google Patents
Proton exchange membrane h2 fuel cell stack output protecting device Download PDFInfo
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- CN208522039U CN208522039U CN201820837228.XU CN201820837228U CN208522039U CN 208522039 U CN208522039 U CN 208522039U CN 201820837228 U CN201820837228 U CN 201820837228U CN 208522039 U CN208522039 U CN 208522039U
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- Prior art keywords
- fuel cell
- cell stack
- membrane electrode
- electrode monomer
- voltage
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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 hydrogen fuel cell technical fields, more particularly to a kind of proton exchange membrane h2 fuel cell stack output protecting device, by membrane electrode monomer voltage detection circuit, h2 fuel cell stack governor circuit, pile output relay is constituted, wherein positive and negative electrode C0~Cn of concatenated n membrane electrode monomer E1~En is sequentially ingressed into membrane electrode monomer voltage detection circuit in h2 fuel cell stack, h2 fuel cell stack governor circuit is responsible for receiving the operating voltage data of membrane electrode monomer, the minimum voltage and average voltage value of calculating membrane electrode monomer and the ratio data of both, the solenoid valve of control hydrogen gas side and oxygen side is removed by digital I/O interface, blower, the working condition of the actuators such as hydro-thermal management system.The present apparatus is that by h2 fuel cell stack membrane electrode monomer minimum voltage and the detection of the environmental variances such as this 2 output protection Indexs measures of average voltage and temperature, pressure, the flow of battery pile is interrelated.
Description
Technical field
The utility model relates to hydrogen fuel cell technical field more particularly to a kind of proton exchange membrane h2 fuel cell stack are defeated
Protective device out.
Background technique
The desired output voltage Uo calculation formula of proton exchange film hydrogen fuel cell stack membrane electrode monomer are as follows:
In above formulaThe respectively pressure of hydrogen, oxygen and vapor, Eo are h2 fuel cell stack membrane electrode
The ideal standard electromotive force of monomer, R are universal gas constant, and T is h2 fuel cell stack operating temperature, and F is Faraday constant.
By formula (1) it can be seen that the output voltage Uo of h2 fuel cell stack membrane electrode monomer is made of 2 parts, the 1st
The numerical value for being divided into ideal standard the electromotive force Eo, Eo of membrane electrode monomer is mainly determined by the material property of membrane electrode monomer；2nd
It is divided into the environmental variance factor of membrane electrode monomer, mainly by work temperature, Hydrogen Vapor PressureOxygen pressureEqual environment become
The numerical value of amount determines.
Proton exchange film hydrogen fuel cell power generation principle is similar with primary battery, but compared with primary battery and secondary cell, needs
Have a set of relative complex management control system, mainly includes fuel supply, oxidant supply, hydro-thermal management and automatically controlled list
The subsystems such as member.In proton exchange membrane hydrogen fuel cell system, there are many crucial environmental variance parameters to need to control, such as
Water parameter, hydrogen supply, oxygen supply parameter and temperature, pressure parameter etc., and the control effect of these environmental variances can be from membrane electrode
It is embodied in monomer voltage, membrane electrode monomer voltage reflects the work of entire h2 fuel cell stack and its management control system
State can not only find the different of h2 fuel cell stack and its management control system by detecting membrane electrode monomer voltage in time
Normal situation, and the harmony of membrane electrode monomer voltage can directly reflect and influence performance and the longevity of entire h2 fuel cell stack
Life.
In proton exchange film hydrogen fuel cell generation, h2 fuel cell stack management control system is by membrane electrode monomer
Voltage detecting circuit and h2 fuel cell stack governor circuit are constituted, and wherein membrane electrode monomer voltage detection circuit is responsible for acquisition in real time
The operating voltage data of all membrane electrode monomers and h2 fuel cell stack governor circuit is reported in h2 fuel cell stack；Hydrogen fuel
Battery pile governor circuit is responsible for receiving the operating voltage data of membrane electrode monomer, and calculates the minimum voltage peace of membrane electrode monomer
Equal voltage value, if it find that some membrane electrode monomer operating voltage numerical exception, h2 fuel cell stack governor circuit have to
Output protection state is timely entered, the output electric current of h2 fuel cell stack is cut off, to prevent the membrane electrode in h2 fuel cell stack
Permanent damage occurs for monomer.
About proton exchange membrane h2 fuel cell stack output protecting device and its relevant prior art patent of control method
Open situation is mainly as follows:
(1) " a kind of vehicle fuel battery heap monolithic voltage monitor " (CN200410006242)
(2) " a kind of monomer battery voltage measurement circuit of fuel cell pile " (CN201010141215)
(3) " small-power fuel cell cell voltage data-logger " (CN201220267702)
(4) " connector, monitoring device and the method for the monitoring of fuel cell pack monomer battery voltage "
(CN201410457421)
(5) " the long-range Monitoring and control system of fuel cell " (CN201720585250)
(6) " a kind of full-sized car fuel cell management system and method " (CN201611071930)
(7) " the detection method and detection device (CN201410779579) of proton exchange film fuel cell electric piling consistency
H2 fuel cell stack management control system evaluates electricity using by the method for detecting membrane electrode monomer voltage at present
The performance and operating status of Chi Dui, 2 indexs usually chosen are the minimum voltage and average voltage of membrane electrode monomer, hydrogen fuel
Whether battery pile management control system whole or has by the minimum voltage and average voltage this 2 indexs for determining membrane electrode monomer
Any one triggers alarm setting value, then h2 fuel cell stack will enter output protection state.
There are following technologies to lack for current proton exchange membrane h2 fuel cell stack output protecting device and its control method
It falls into:
(1) because there are many factor for influencing membrane electrode monomer output voltage, the material property and temperature pressure of membrane electrode monomer
The environmental variances such as power factor can determine the output voltage numerical value of membrane electrode monomer, so in the minimum electricity for determining membrane electrode monomer
Before pressure and this 2 indexs of average voltage, it is necessary to first determine the environmental variances such as temperature, pressure, the flow of h2 fuel cell stack
Sensor signal whether within normal range (NR), this 2 fingers of the simple minimum voltage for determining membrane electrode monomer and average voltage
Indicate very big technical limitation.
(2) because the C-V characteristic of proton exchange membrane h2 fuel cell stack output is very soft, the work electricity of membrane electrode monomer
Press the change rate to output electric current also very big, so under different output electric currents, the minimum voltage of membrane electrode monomer and average
This 2 indexs of voltage numerically have very big floating respective, individually determine the minimum voltage peace of membrane electrode monomer
Whether this 2 numerical value of equal voltage, which transfinite, there will naturally be technical defect.
Utility model content
Purpose of the utility model is to overcome the shortcomings of the above technology, and to provide a kind of proton exchange membrane hydrogen fuel cells
Heap output protecting device.
In order to achieve the above object, the utility model adopts the following technical solutions: a kind of proton exchange membrane h2 fuel cell stack
Output protecting device, it is characterised in that: defeated by membrane electrode monomer voltage detection circuit, h2 fuel cell stack governor circuit, pile
Relay is constituted out, and wherein positive and negative electrode C0~Cn of concatenated n membrane electrode monomer E1~En is successively in h2 fuel cell stack
Access membrane electrode monomer voltage detection circuit, the circuit be responsible in real time acquisition h2 fuel cell stack in all membrane electrode monomer E1~
The operating voltage data of En are simultaneously reported to h2 fuel cell stack governor circuit, h2 fuel cell stack master control by CAN communication bus
On the one hand circuit is responsible for receiving the operating voltage data of membrane electrode monomer, calculate the minimum voltage and average voltage of membrane electrode monomer
Numerical value and the ratio data of both, on the other hand, h2 fuel cell stack governor circuit also passes through analog-to-digital conversion ADC interface and acquires
The signal of the sensors such as temperature, pressure, flow, the output electric current of h2 fuel cell stack, and according to the number of these sensor signals
According to the work of the actuators such as solenoid valve, blower, the hydro-thermal management system for going control hydrogen gas side and oxygen side by digital I/O interface
State.
Preferably, the membrane electrode monomer voltage detection circuit is using S32K144 microcontroller as main control chip.
Preferably, the battery pile governor circuit is using S32K144 microcontroller as main control chip, S32K144 micro-control
Device processed acquires the temperature, pressure, flow, output current sense of h2 fuel cell stack by analog-to-digital conversion pin ADC0~ADC15
The signal of device, by numeral input pin IN0~IN15 receive external control signal, by numeral output pin OUT0~
OUT15 controls fuel supply, oxidant supply, hydro-thermal management subsystem, controls hydrogen fuel by numeral output pin RELAY+
Battery pile anode output relay controls h2 fuel cell stack cathode output relay by numeral output pin RELAY-.
It is protected the beneficial effects of the utility model are: being exported using proton exchange membrane h2 fuel cell stack proposed by the invention
Protection unit and its control method can overcome the technological deficiency of existing h2 fuel cell stack output protecting device and its method,
New method is in the case where determining the normal situations of sensor signals such as temperature, pressure, the flow of battery pile, further according to membrane electrode monomer electricity
The n membrane electrode monomer voltage data that pressure detection circuit reports, calculate membrane electrode monomer minimum voltage data and average voltage
Data, h2 fuel cell stack governor circuit is by protecting the ratio data of membrane electrode monomer minimum voltage and average voltage and shutdown
The method that shield preset value compares, generates output protection signal.The beneficial effect of new method shows two aspects, one is energy
It is enough to realize h2 fuel cell stack membrane electrode monomer minimum voltage and this 2 output protection Indexs measures of average voltage and battery pile
The environmental variances such as temperature, pressure, flow detect interrelated, the variable causality in coincidence formula (1), in technical solution
On more fully rationally；The second is it is contemplated that h2 fuel cell stack exports the partially soft feature of C-V characteristic, using film is electric
The method of this 2 numerical value linkage processing of the minimum voltage and average voltage of pole monomer, particularly as being minimum according to membrane electrode monomer
New method of the ratio data of voltage and average voltage compared with stoppage protection preset value, to determine whether to enter output protection
State can reach under different output current conditions, can accurately detect that current C-V characteristic is worst in battery pile
That membrane electrode and all membrane electrode average characteristics between values of disparity.
Detailed description of the invention
Fig. 1 is the system block diagram of the utility model；
Fig. 2 is the step flow chart of the utility model；
Fig. 3 is membrane electrode monomer voltage detection circuit schematic diagram in the utility model；
Fig. 4 is battery pile governor circuit schematic diagram in the utility model.
Specific embodiment
With reference to the accompanying drawing and specific embodiment of the present utility model is described in detail in preferred embodiment.As shown in Figure 1, matter
Proton exchange h2 fuel cell stack is in series by n membrane electrode monomer E1~En, this output protecting device and its control method
Hydrogen fuel electricity is formed using by membrane electrode monomer voltage detection circuit, h2 fuel cell stack governor circuit, pile output relay
Pond heap manager control system, wherein in h2 fuel cell stack concatenated n membrane electrode monomer E1~En positive and negative electrode C0~Cn
It is sequentially ingressed into membrane electrode monomer voltage detection circuit, which is responsible for all membrane electrode monomers in acquisition h2 fuel cell stack in real time
The operating voltage data of E1~En are simultaneously reported to h2 fuel cell stack governor circuit by CAN communication bus.H2 fuel cell stack
On the one hand governor circuit is responsible for receiving the operating voltage data of membrane electrode monomer, calculate the minimum voltage of membrane electrode monomer and average
Voltage value and the ratio data of both, on the other hand, h2 fuel cell stack governor circuit also passes through analog-to-digital conversion ADC interface
The signal of the sensors such as temperature, pressure, flow, the output electric current of h2 fuel cell stack is acquired, and according to these sensor signals
Data the actuators such as solenoid valve, blower, hydro-thermal management system of control hydrogen gas side and oxygen side are removed by digital I/O interface
Working condition.
Proton exchange membrane h2 fuel cell stack output protection control method proposed by the invention is as follows:
(1) membrane electrode monomer voltage detection circuit acquires the work of all membrane electrode monomer E1~En in h2 fuel cell stack
Voltage data.
(2) membrane electrode monomer voltage detection circuit reports membrane electrode monomer E1~En operating voltage data by communication bus
Give h2 fuel cell stack governor circuit.
(3) temperature, pressure of h2 fuel cell stack governor circuit acquisition h2 fuel cell stack, flow, output electric current etc. pass
The signal of sensor calculates actuator according to sensor signal data and controls signal number if all the sensors signal is without exception
According to being then transferred to step (4)；If sensor signal has exception, output protection signal, pile output relay coil are generated
Power-off, cuts off the output electric current of h2 fuel cell stack, h2 fuel cell stack and its management control system enter output protection state.
(4) the membrane electrode monomer E1 that h2 fuel cell stack governor circuit is reported according to membrane electrode monomer voltage detection circuit~
The minimum voltage and average voltage value of En operating voltage data calculating membrane electrode monomer.
(5) h2 fuel cell stack governor circuit calculates the ratio data of membrane electrode monomer minimum voltage and average voltage, this
Ratio data represents institute in that membrane electrode and the h2 fuel cell stack that current C-V characteristic is worst in h2 fuel cell stack
There is the values of disparity between membrane electrode average characteristics.
(6) ratio data of this membrane electrode monomer minimum voltage and average voltage is compared with stoppage protection preset value,
It is then transferred to step (1) again if it is less than stoppage protection preset value and continues cycling through operation；If it is greater than or be equal to stoppage protection it is pre-
If value then generates output protection signal, h2 fuel cell stack output relay coil blackout cuts off the output of h2 fuel cell stack
Electric current, h2 fuel cell stack and its management control system enter output protection state.
It is with 1 LTC6804 multiple batteries monitor chip as main control chip using S32K144 microcontroller in Fig. 3
Example, using S32K144 as SPI serial communication host, using LTC6804 as serial communication slave, using four-way isolator
ADuM5401 generates the+5VA voltage of isolation pressure stabilizing output as SPI isolating chip, turns using non-isolated DC-DC boosting
Parallel operation provides+24VA supply voltage for LTC6804 chip.Each LTC6804 chip can acquire the work of 12 road membrane electrode monomers
Voltage data C00~C12 can go selection monomer voltage inspection according to the numerical value of membrane electrode monomer populations n in h2 fuel cell stack
The LTC6804 number of chips in element circuit is surveyed, S32K144 microcontroller reads whole LTC6804 chip by spi bus and adopts
The membrane electrode monomer operating voltage data value of collection, and pin realization is communicated by CAN1.TXD and CAN1.RXD and reports membrane electrode list
Body E1~En operating voltage data are to h2 fuel cell stack governor circuit and receive the function of its control command.
As shown in figure 4, battery pile governor circuit uses S32K144 microcontroller as main control chip, S32K144 passes through mould
The signal of the sensors such as temperature, pressure, flow, the output electric current of number conversion pin ADC0~ADC15 acquisition h2 fuel cell stack,
External control signal is received by numeral input pin IN0~IN15, fuel is controlled by numeral output pin OUT0~OUT15
It is defeated to control h2 fuel cell stack anode by numeral output pin RELAY+ for the subsystems such as supply, oxidant supply, hydro-thermal management
Relay out controls h2 fuel cell stack cathode output relay by numeral output pin RELAY-.S32K144 in Fig. 4
Microcontroller communicates pin by CAN1.TXD and CAN1.RXD and realizes that the CAN between membrane electrode monomer voltage detection circuit is logical
Communication function.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (3)
1. a kind of proton exchange membrane h2 fuel cell stack output protecting device, it is characterised in that: detected by membrane electrode monomer voltage
Circuit, h2 fuel cell stack governor circuit, pile output relay are constituted, wherein concatenated n film electricity in h2 fuel cell stack
Positive and negative electrode C0~Cn of pole monomer E1~En is sequentially ingressed into membrane electrode monomer voltage detection circuit, which is responsible for acquisition in real time
The operating voltage data of all membrane electrode monomer E1~En and hydrogen fuel is reported to by CAN communication bus in h2 fuel cell stack
On the one hand battery pile governor circuit, h2 fuel cell stack governor circuit are responsible for receiving the operating voltage data of membrane electrode monomer, meter
The minimum voltage and average voltage value of calculation membrane electrode monomer and the ratio data of both, on the other hand, h2 fuel cell stack
Governor circuit also passes through the sensings such as temperature, pressure, flow, the output electric current of analog-to-digital conversion ADC interface acquisition h2 fuel cell stack
The signal of device, and the electromagnetism of control hydrogen gas side and oxygen side is removed according to the data of these sensor signals by digital I/O interface
The working condition of the actuators such as valve, blower, hydro-thermal management system.
2. proton exchange membrane h2 fuel cell stack output protecting device according to claim 1, it is characterised in that: the film
Electrode monomer voltage detection circuit is using S32K144 microcontroller as main control chip.
3. proton exchange membrane h2 fuel cell stack output protecting device according to claim 1, it is characterised in that: the electricity
For pond heap governor circuit using S32K144 microcontroller as main control chip, S32K144 microcontroller passes through analog-to-digital conversion pin
ADC0~ADC15 acquires the temperature, pressure, flow, the signal for exporting current sensor of h2 fuel cell stack, passes through numeral input
Pin IN0~IN15 receives external control signal, controls fuel supply, oxidant by numeral output pin OUT0~OUT15
Supply, hydro-thermal management subsystem control h2 fuel cell stack anode output relay by numeral output pin RELAY+, pass through
Numeral output pin RELAY- controls h2 fuel cell stack cathode output relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820837228.XU CN208522039U (en) | 2018-05-31 | 2018-05-31 | Proton exchange membrane h2 fuel cell stack output protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820837228.XU CN208522039U (en) | 2018-05-31 | 2018-05-31 | Proton exchange membrane h2 fuel cell stack output protecting device |
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| Publication Number | Publication Date |
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| CN208522039U true CN208522039U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820837228.XU Withdrawn - After Issue CN208522039U (en) | 2018-05-31 | 2018-05-31 | Proton exchange membrane h2 fuel cell stack output protecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729502A (en) * | 2019-10-24 | 2020-01-24 | 武汉格罗夫氢能汽车有限公司 | Information acquisition system of proton exchange membrane fuel cell engine |
| CN113793956A (en) * | 2021-08-27 | 2021-12-14 | 深圳市氢蓝时代动力科技有限公司 | Membrane electrode state detection method, membrane electrode state detection system, electronic device and storage medium |
-
2018
- 2018-05-31 CN CN201820837228.XU patent/CN208522039U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729502A (en) * | 2019-10-24 | 2020-01-24 | 武汉格罗夫氢能汽车有限公司 | Information acquisition system of proton exchange membrane fuel cell engine |
| CN113793956A (en) * | 2021-08-27 | 2021-12-14 | 深圳市氢蓝时代动力科技有限公司 | Membrane electrode state detection method, membrane electrode state detection system, electronic device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190219 Effective date of abandoning: 20190402 |