CN212366007U - Monitoring circuit of hydrogen supply system of hydrogen fuel cell - Google Patents
Monitoring circuit of hydrogen supply system of hydrogen fuel cell Download PDFInfo
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- CN212366007U CN212366007U CN202021066270.XU CN202021066270U CN212366007U CN 212366007 U CN212366007 U CN 212366007U CN 202021066270 U CN202021066270 U CN 202021066270U CN 212366007 U CN212366007 U CN 212366007U
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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
Abstract
The utility model relates to the technical field of hydrogen supply system of hydrogen fuel cell, in particular to a monitoring circuit of hydrogen supply system of hydrogen fuel cell, which comprises a power supply circuit, a hydrogen filling opening monitoring circuit, a temperature monitoring circuit, a pressure monitoring circuit, a control circuit, a hydrogen outlet monitoring circuit, a flow valve control circuit, a communication circuit and a hydrogen concentration monitoring circuit, wherein the control circuit is respectively electrically connected with the power supply circuit, the hydrogen filling opening monitoring circuit, a temperature monitoring circuit, a pressure monitoring circuit, a hydrogen outlet monitoring circuit, a flow valve control circuit, a communication circuit and a hydrogen concentration monitoring circuit, and the hydrogen storage device can realize the real-time monitoring of hydrogen state in hydrogen storage equipment through the cooperation of the power supply circuit, the hydrogen filling opening monitoring circuit, the pressure monitoring circuit, the control circuit, the hydrogen outlet monitoring circuit, the flow valve control circuit, the communication circuit and the hydrogen concentration monitoring circuit, thereby ensuring the safety of hydrogen application.
Description
Technical Field
The utility model relates to a hydrogen fuel cell hydrogen supply system technical field, in particular to hydrogen fuel cell hydrogen supply system's monitoring circuit.
Background
With the increasing weight of the petroleum energy crisis and the increasing environmental awareness of people, the electric automobile becomes an important development direction of the automobile because zero emission can be realized, the electric automobile is not very known, the service life of the battery is short, the later recycling is difficult, and the soil environment is seriously polluted, so that a novel energy application-fuel cell technology is widely advocated; in the fuel cell technology, particularly the hydrogen fuel cell technology, the advantages of high conversion efficiency, real zero emission, rich resource reserves, renewability and the like are confirmed as the key direction of the future energy development; however, the inherent properties of hydrogen make hydrogen storage and transportation challenging, and real-time monitoring of hydrogen conditions is essential to ensure the safety of hydrogen applications.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: provided is a monitoring circuit for a hydrogen supply system of a hydrogen fuel cell, which can effectively monitor the real-time state of a hydrogen storage device.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a monitoring circuit of hydrogen fuel cell hydrogen supply system, includes power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, control circuit, hydrogen export monitoring circuit, flow valve control circuit, communication circuit and hydrogen concentration monitoring circuit, control circuit is connected with power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, hydrogen export monitoring circuit, flow valve control circuit, communication circuit and hydrogen concentration monitoring circuit electricity respectively.
Further, hydrogen filling opening monitoring circuit includes resistance R100, resistance R292 and optoelectronic coupler U80, optoelectronic coupler U80's first end is connected with the infrared sensor way electricity of peripheral hardware, optoelectronic coupler U80's second end is connected with resistance R292's one end electricity, resistance R292's the other end ground connection, optoelectronic coupler U80's third end ground connection, optoelectronic coupler U80's fourth end is connected with resistance R100's one end and control circuit electricity respectively, resistance R100's the other end and control circuit electricity are connected.
Further, the temperature monitoring circuit comprises an NTC temperature detection processing circuit, and the NTC temperature detection processing circuit comprises a resistor R89, a resistor R523, a resistor R524, a resistor R525, a resistor R526, a capacitor C249, a capacitor C250, a capacitor C251, a chip U81 and a chip U82;
a first pin of the chip U82 is electrically connected with one end of a resistor R523 and one end of a resistor R525 respectively, a second pin of the chip U82 is electrically connected with one end of a resistor R89, the other end of the resistor R89 is electrically connected with a third pin of the chip U82, a fourth pin of the chip U82 is electrically connected with an external NTC temperature sensor, a fifth pin of the chip U82 and a sixth pin of the chip U82 are both grounded, a seventh pin of the chip U82 is electrically connected with one end of a resistor R524, the other end of the resistor R524 is electrically connected with one end of a capacitor C251 and a control circuit respectively, an eighth pin of the chip U82 is electrically connected with one end of a capacitor C250 and the control circuit respectively, the other end of the capacitor C250 and the other end of the capacitor C251 are both grounded, the other end of the resistor R523 is electrically connected with one end of the resistor R526 and the second pin of the chip U81 respectively, and the other end of the resistor R526 is electrically connected with the external NT, the first pin of the chip U81 is electrically connected with one end of a capacitor C249 and a control circuit respectively, and the other end of the resistor R525 and the third pin of the chip U81 are both grounded.
Further, the temperature monitoring circuit also comprises a PTC temperature detection processing circuit, the PTC temperature detection processing circuit comprises a resistor R70, a resistor R63, a resistor R517, a resistor R518, a capacitor C247, a diode D102 and a diode D103, one end of the resistor R63 is electrically connected with one end of the resistor R518, one end of the resistor R70, one end of the capacitor C247 and one end of the resistor R517 respectively, the other end of the resistor R63 is electrically connected with the control circuit, the other end of the resistor R518 is electrically connected with an external PTC temperature sensor, the other end of the resistor R70 is electrically connected with the other end of the capacitor C247, the other end of the resistor R70 and the other end of the capacitor C247 are both grounded, the other end of the resistor R517 is respectively and electrically connected with the cathode of the diode D103, the anode of the diode D102 and the control circuit, the anode of the diode D103 is grounded, and the cathode of the diode D102 is electrically connected to the control circuit.
Further, the flow valve control circuit comprises a resistor R35, a resistor R33, a resistor R37, a resistor R227, a resistor R228, an inductor L16, an inductor L17, a diode D10, a diode D81, a triode Q5, a field effect transistor Q3 and a relay U8;
a first pin of the relay U8 is electrically connected with a source of a field effect transistor Q3 and a cathode of a diode D10, respectively, a second pin of the relay U8 is electrically connected with an anode of a diode D10, a second pin of the relay U8 and an anode of a diode D10 are both grounded, a gate of the field effect transistor Q3 is electrically connected with one end of a resistor R33 and a collector of a triode Q5, respectively, a collector of the field effect transistor Q3 is electrically connected with one end of an inductor L17, one end of an inductor L16 and the other end of a resistor R33, an emitter of the triode Q5 is electrically connected with the other end of a resistor R37, an emitter of the triode Q5 and one end of a resistor R37 are both grounded, a base of the triode Q5 is electrically connected with one end of a resistor R6959 and the other end of a resistor R37, the other end of a resistor R35 is electrically connected with a control circuit, respectively, a fifth pin of the relay U8 is electrically connected with, the other end of the diode D81 is connected to ground.
Further, the hydrogen concentration monitoring circuit includes a resistor R111, a resistor R112, a resistor R535, a resistor R536, a resistor R537, a resistor R538, a capacitor C254, a diode D106, a diode D107, and a transistor Q7, wherein a base of the transistor Q7 is electrically connected to one end of the resistor R537 and one end of the resistor R536, respectively, a second end of the resistor R536 is electrically connected to an external hydrogen concentration sensor, an emitter of the transistor Q7 is electrically connected to one end of the resistor R112 and one end of the resistor R535, respectively, a second end of the resistor R535 is electrically connected to another end of the resistor R537 and one end of the capacitor C254, respectively, a second end of the resistor R537 and one end of the capacitor C254 are all grounded, a second end of the resistor R112 is electrically connected to another end of the capacitor C254, a cathode of the diode D107, a cathode of the diode D106 and one end of the resistor R111, an anode of the diode D107 is grounded, the cathode of the diode D106 is electrically connected to the control circuit, the collector of the transistor Q7 is electrically connected to the other end of the resistor R111 and one end of the resistor R538, respectively, and the other end of the resistor R538 is electrically connected to the control circuit.
The beneficial effects of the utility model reside in that:
monitoring and distributing a system power supply by setting a power supply circuit; a hydrogen injection port monitoring circuit is arranged to monitor the state of the hydrogen at the injection port; a flow valve control circuit is arranged to collect and output signals of the flowmeter and the regulating valve; a hydrogen concentration monitoring circuit is arranged to monitor the hydrogen concentration state of the hydrogen storage equipment; this scheme passes through power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, control circuit, hydrogen export monitoring circuit, flow valve control circuit, the cooperation between communication circuit and the hydrogen concentration monitoring circuit, realizes carrying out real time monitoring to the hydrogen state in the hydrogen storage equipment to guarantee the security that hydrogen was used.
Drawings
Fig. 1 is a circuit connection block diagram of a monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 2 is a schematic circuit diagram of a hydrogen inlet monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 3 is a schematic circuit diagram of an NTC temperature detection processing circuit of a monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 4 is a schematic circuit diagram of a PTC temperature detection processing circuit of a monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 5 is a schematic circuit diagram of a flow valve control circuit of a monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 6 is a schematic circuit diagram of a hydrogen concentration monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 7 is a schematic circuit diagram of a communication circuit of a monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 8 is a schematic circuit diagram of a pressure monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
fig. 9 is a schematic circuit diagram of a power circuit of a monitoring circuit of a hydrogen supply system for a hydrogen fuel cell according to the present invention;
description of reference numerals:
1. a power supply circuit; 2. a hydrogen gas injection port monitoring circuit; 3. a temperature monitoring circuit; 4. a pressure monitoring circuit; 5. a control circuit; 6. a hydrogen outlet monitoring circuit; 7. a flow valve control circuit; 8. a communication circuit; 9. a hydrogen concentration monitoring circuit.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the technical solution provided by the present invention is:
the utility model provides a monitoring circuit of hydrogen fuel cell hydrogen supply system, includes power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, control circuit, hydrogen export monitoring circuit, flow valve control circuit, communication circuit and hydrogen concentration monitoring circuit, control circuit is connected with power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, hydrogen export monitoring circuit, flow valve control circuit, communication circuit and hydrogen concentration monitoring circuit electricity respectively.
From the above description, the beneficial effects of the present invention are:
monitoring and distributing a system power supply by setting a power supply circuit; a hydrogen injection port monitoring circuit is arranged to monitor the state of the hydrogen at the injection port; a flow valve control circuit is arranged to collect and output signals of the flowmeter and the regulating valve; a hydrogen concentration monitoring circuit is arranged to monitor the hydrogen concentration state of the hydrogen storage equipment; this scheme passes through power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, control circuit, hydrogen export monitoring circuit, flow valve control circuit, the cooperation between communication circuit and the hydrogen concentration monitoring circuit, realizes carrying out real time monitoring to the hydrogen state in the hydrogen storage equipment to guarantee the security that hydrogen was used.
Further, hydrogen filling opening monitoring circuit includes resistance R100, resistance R292 and optoelectronic coupler U80, optoelectronic coupler U80's first end is connected with the infrared sensor way electricity of peripheral hardware, optoelectronic coupler U80's second end is connected with resistance R292's one end electricity, resistance R292's the other end ground connection, optoelectronic coupler U80's third end ground connection, optoelectronic coupler U80's fourth end is connected with resistance R100's one end and control circuit electricity respectively, resistance R100's the other end and control circuit electricity are connected.
As can be seen from the above description, the signal of the non-contact infrared sensor is connected to the first end of the photoelectric coupler U80, when the filling gun state sensor is connected, the photoelectric coupler U80 is turned on, the signal of the control circuit connected to the fourth end of the photoelectric coupler U80 is pulled down by 5V, and therefore it is determined that the hydrogen filling gun is in the inserted state, otherwise, the filling gun is not inserted.
Further, the temperature monitoring circuit comprises an NTC temperature detection processing circuit, and the NTC temperature detection processing circuit comprises a resistor R89, a resistor R523, a resistor R524, a resistor R525, a resistor R526, a capacitor C249, a capacitor C250, a capacitor C251, a chip U81 and a chip U82;
a first pin of the chip U82 is electrically connected with one end of a resistor R523 and one end of a resistor R525 respectively, a second pin of the chip U82 is electrically connected with one end of a resistor R89, the other end of the resistor R89 is electrically connected with a third pin of the chip U82, a fourth pin of the chip U82 is electrically connected with an external NTC temperature sensor, a fifth pin of the chip U82 and a sixth pin of the chip U82 are both grounded, a seventh pin of the chip U82 is electrically connected with one end of a resistor R524, the other end of the resistor R524 is electrically connected with one end of a capacitor C251 and a control circuit respectively, an eighth pin of the chip U82 is electrically connected with one end of a capacitor C250 and the control circuit respectively, the other end of the capacitor C250 and the other end of the capacitor C251 are both grounded, the other end of the resistor R523 is electrically connected with one end of the resistor R526 and the second pin of the chip U81 respectively, and the other end of the resistor R526 is electrically connected with the external NT, the first pin of the chip U81 is electrically connected with one end of a capacitor C249 and a control circuit respectively, and the other end of the resistor R525 and the third pin of the chip U81 are both grounded.
As can be seen from the above description, the chip U81 actually provides power for the acquisition balanced bridge of the NTC temperature sensor, the NTC temperature sensor signal actually is a resistance signal, the temperature value corresponding to the resistance value can be found out through the graduation table provided by the sensor manual, the resistance R526, the resistance R523 and the accessed NTC temperature sensor signal are connected into the balanced bridge to convert the resistance value signal of the NTC temperature sensor into a voltage signal to be input to the fourth pin of the chip U82, the voltage signal is amplified by the operational amplifier circuit formed by the chip U82 and then output from the seventh pin of the chip U82, and then the voltage signal passes through the current limiting resistor R524 and then is connected to the signal acquisition port of the control circuit to complete the signal acquisition of the NTC temperature sensor, so as to determine the temperature state of the current sensor detection area.
Further, the temperature monitoring circuit also comprises a PTC temperature detection processing circuit, the PTC temperature detection processing circuit comprises a resistor R70, a resistor R63, a resistor R517, a resistor R518, a capacitor C247, a diode D102 and a diode D103, one end of the resistor R63 is electrically connected with one end of the resistor R518, one end of the resistor R70, one end of the capacitor C247 and one end of the resistor R517 respectively, the other end of the resistor R63 is electrically connected with the control circuit, the other end of the resistor R518 is electrically connected with an external PTC temperature sensor, the other end of the resistor R70 is electrically connected with the other end of the capacitor C247, the other end of the resistor R70 and the other end of the capacitor C247 are both grounded, the other end of the resistor R517 is respectively and electrically connected with the cathode of the diode D103, the anode of the diode D102 and the control circuit, the anode of the diode D103 is grounded, and the cathode of the diode D102 is electrically connected to the control circuit.
As can be seen from the above description, the resistor R63, the resistor R518, and the resistance signal of the PTC temperature sensor constitute a voltage divider circuit for converting the signal of the PTC temperature sensor into a voltage signal, and then the resistor R517 is connected to the analog acquisition port of the control circuit after limiting the current, so as to complete the detection processing of the signal acquired by the PTC temperature sensor; the resistor R70 is an occupation resistor which is not required to be mounted, the capacitor C247 is a filter capacitor, and the diode D102 and the diode D103 are ESD protection devices of the input interface of the control circuit.
Further, the flow valve control circuit comprises a resistor R35, a resistor R33, a resistor R37, a resistor R227, a resistor R228, an inductor L16, an inductor L17, a diode D10, a diode D81, a triode Q5, a field effect transistor Q3 and a relay U8;
a first pin of the relay U8 is electrically connected with a source of a field effect transistor Q3 and a cathode of a diode D10, respectively, a second pin of the relay U8 is electrically connected with an anode of a diode D10, a second pin of the relay U8 and an anode of a diode D10 are both grounded, a gate of the field effect transistor Q3 is electrically connected with one end of a resistor R33 and a collector of a triode Q5, respectively, a collector of the field effect transistor Q3 is electrically connected with one end of an inductor L17, one end of an inductor L16 and the other end of a resistor R33, an emitter of the triode Q5 is electrically connected with the other end of a resistor R37, an emitter of the triode Q5 and one end of a resistor R37 are both grounded, a base of the triode Q5 is electrically connected with one end of a resistor R6959 and the other end of a resistor R37, the other end of a resistor R35 is electrically connected with a control circuit, respectively, a fifth pin of the relay U8 is electrically connected with, the other end of the diode D81 is connected to ground.
As can be seen from the above description, the control circuit outputs a high level to be connected from the other end of the resistor R35, one end of the resistor R35 is connected to the base of the transistor Q5, so as to drive the transistor Q5 to be turned on, because the collector of the transistor Q5 is connected to the gate of the fet Q3, when the transistor Q5 is turned on, the fet Q3 is driven to be turned on, the fet Q3 conducts a large current through the coil of the relay U8, so as to drive the relay U8 to be connected with the normally open contact, the fourth pin of the relay U8 is connected to the power supply 24V, and when the relay U8 is turned on, the fifth pin output of the relay U8 controls; the diode D10 is a freewheeling diode of the relay U8, and prevents the back electromotive force from damaging the drive field effect transistor; wherein diode D81 is a freewheeling diode for an external inductive load; the resistor R227 and the resistor R228 are feedback circuits for detecting the output state of the fifth pin of the relay U8, and the control signal state of the electromagnetic valve is fed back to the control circuit through resistance voltage division.
Further, the hydrogen concentration monitoring circuit includes a resistor R111, a resistor R112, a resistor R535, a resistor R536, a resistor R537, a resistor R538, a capacitor C254, a diode D106, a diode D107, and a transistor Q7, wherein a base of the transistor Q7 is electrically connected to one end of the resistor R537 and one end of the resistor R536, respectively, a second end of the resistor R536 is electrically connected to an external hydrogen concentration sensor, an emitter of the transistor Q7 is electrically connected to one end of the resistor R112 and one end of the resistor R535, respectively, a second end of the resistor R535 is electrically connected to another end of the resistor R537 and one end of the capacitor C254, respectively, a second end of the resistor R537 and one end of the capacitor C254 are all grounded, a second end of the resistor R112 is electrically connected to another end of the capacitor C254, a cathode of the diode D107, a cathode of the diode D106 and one end of the resistor R111, an anode of the diode D107 is grounded, the cathode of the diode D106 is electrically connected to the control circuit, the collector of the transistor Q7 is electrically connected to the other end of the resistor R111 and one end of the resistor R538, respectively, and the other end of the resistor R538 is electrically connected to the control circuit.
As can be seen from the above description, the signal of the hydrogen concentration sensor is accessed from the other end of the resistor R536, the signal of the hydrogen concentration sensor is a digital PWM signal in reality, and the signal of the hydrogen concentration sensor is accessed to the base of the triode Q7 through the resistor R536 to drive the triode Q7 to be turned on and off, wherein the resistor R111 is an occupation resistor which is not attached when attached, the emitter of the triode Q7 is connected to the digital PWM signal which is output by the resistor R112 and synchronous with the sensor, and the other end of the resistor R112 is connected to the control circuit and directly transmits the signal to the acquisition port of the control circuit, so as to realize the signal acquisition and analysis of the hydrogen concentration sensor and realize the monitoring; the diode D106 and the diode D107 in the circuit are ESD protection devices of the acquisition port of the control circuit.
Referring to fig. 1 to 9, a first embodiment of the present invention is:
referring to fig. 1, a monitoring circuit of a hydrogen supply system of a hydrogen fuel cell includes a power circuit 1, a hydrogen inlet monitoring circuit 2, a temperature monitoring circuit 3, a pressure monitoring circuit 4, a control circuit 5, a hydrogen outlet monitoring circuit 6, a flow valve control circuit 7, a communication circuit 8 and a hydrogen concentration monitoring circuit 9, wherein the control circuit 5 is electrically connected to the power circuit 1, the hydrogen inlet monitoring circuit 2, the temperature monitoring circuit 3, the pressure monitoring circuit 4, the hydrogen outlet monitoring circuit 6, the flow valve control circuit 7, the communication circuit 8 and the hydrogen concentration monitoring circuit 9, respectively.
Referring to fig. 2, the hydrogen injection port monitoring circuit 2 includes a resistor R100 (having a resistance of 1K Ω), a resistor R292 (having a resistance of 1K Ω), and a photocoupler U80 (having a model number of CT357), a first end of the photocoupler U80 is electrically connected to an external infrared sensor circuit, a second end of the photocoupler U80 is electrically connected to one end of the resistor R292, another end of the resistor R292 is grounded, a third end of the photocoupler U80 is grounded, a fourth end of the photocoupler U80 is electrically connected to one end of the resistor R100 and the control circuit, and another end of the resistor R100 is electrically connected to the control circuit.
Referring to fig. 3, the temperature monitoring circuit 3 includes an NTC temperature detection processing circuit, which includes a resistor R89 (with a resistance of 2K Ω), a resistor R523 (with a resistance of 2K Ω), a resistor R524 (with a resistance of 100 Ω), a resistor R525 (with a resistance of 80 Ω), a resistor R526 (with a resistance of 2K Ω), a capacitor C249 (with a capacitance of 0.1uF), a capacitor C250 (with a capacitance of 0.1uF), a capacitor C251 (with a capacitance of 0.1uF), a chip U81 (with a model REF3030), and a chip U82 (with a model AD 8226);
a first pin of the chip U82 is electrically connected with one end of a resistor R523 and one end of a resistor R525 respectively, a second pin of the chip U82 is electrically connected with one end of a resistor R89, the other end of the resistor R89 is electrically connected with a third pin of the chip U82, a fourth pin of the chip U82 is electrically connected with an external NTC temperature sensor, a fifth pin of the chip U82 and a sixth pin of the chip U82 are both grounded, a seventh pin of the chip U82 is electrically connected with one end of a resistor R524, the other end of the resistor R524 is electrically connected with one end of a capacitor C251 and a control circuit respectively, an eighth pin of the chip U82 is electrically connected with one end of a capacitor C250 and the control circuit respectively, the other end of the capacitor C250 and the other end of the capacitor C251 are both grounded, the other end of the resistor R523 is electrically connected with one end of the resistor R526 and the second pin of the chip U81 respectively, and the other end of the resistor R526 is electrically connected with the external NT, the first pin of the chip U81 is electrically connected with one end of a capacitor C249 and a control circuit respectively, and the other end of the resistor R525 and the third pin of the chip U81 are both grounded.
Referring to fig. 4, the temperature monitoring circuit 3 further includes a PTC temperature detection processing circuit, the PTC temperature detection processing circuit includes a resistor R70 (with a resistance value of 10K Ω), a resistor R63 (with a resistance value of NC), a resistor R517 (with a resistance value of 10K Ω), a resistor R518 (with a resistance value of 51K Ω), a capacitor C247 (with a capacitance value of 1nF), a diode D102 (with a model of BAT54S/SOT), and a diode D103 (with a model of BAT54S/SOT), one end of the resistor R63 is electrically connected to one end of the resistor R518, one end of the resistor R70, one end of the capacitor C247, and one end of the resistor R517, respectively, the other end of the resistor R63 is electrically connected to the control circuit, the other end of the resistor R518 is electrically connected to the external PTC temperature sensor, the other end of the resistor R70 is electrically connected to the other end of the capacitor C247, the other end of the resistor R70 and the other end of the capacitor C247 are both grounded, and the other, The anode of the diode D102 is electrically connected to the control circuit, the anode of the diode D103 is grounded, and the cathode of the diode D102 is electrically connected to the control circuit.
Referring to fig. 5, the flow valve control circuit 7 includes a resistor R35 (with a resistance value of 1K Ω), a resistor R33 (with a resistance value of 20K Ω), a resistor R37 (with a resistance value of 10K Ω), a resistor R227 (with a resistance value of 210K Ω), a resistor R228 (with a resistance value of 40K Ω), an inductor L16, an inductor L17, a diode D10 (with a model of M1), a diode D81 (with a model of SMAJ36A), a triode Q5 (with a model of MMS9013-L-TP), a field effect transistor Q3 (with a model of DMP30 3098L), and a relay U8 (with a model of NV23KQCZ20DC24V 057);
a first pin of the relay U8 is electrically connected with a source of a field effect transistor Q3 and a cathode of a diode D10, respectively, a second pin of the relay U8 is electrically connected with an anode of a diode D10, a second pin of the relay U8 and an anode of a diode D10 are both grounded, a gate of the field effect transistor Q3 is electrically connected with one end of a resistor R33 and a collector of a triode Q5, respectively, a collector of the field effect transistor Q3 is electrically connected with one end of an inductor L17, one end of an inductor L16 and the other end of a resistor R33, an emitter of the triode Q5 is electrically connected with the other end of a resistor R37, an emitter of the triode Q5 and one end of a resistor R37 are both grounded, a base of the triode Q5 is electrically connected with one end of a resistor R6959 and the other end of a resistor R37, the other end of a resistor R35 is electrically connected with a control circuit, respectively, a fifth pin of the relay U8 is electrically connected with, the other end of the diode D81 is connected to ground.
Referring to fig. 6, the hydrogen concentration monitoring circuit 9 includes a resistor R111 (with a resistance of 330 Ω), a resistor R112 (with a resistance of 330 Ω), a resistor R535 (with a resistance of 10K Ω), a resistor R536 (with a resistance of 5.1K Ω), a resistor R537 (with a resistance of 10K Ω), a resistor R538 (with a resistance of 10K Ω), a capacitor C254 (with a capacitance of 1nF), a diode D106 (with a model BAT54S/SOT), a diode D107 (with a model BAT54S/SOT), and a transistor Q7 (with a model MMBT4401), wherein a base of the transistor Q7 is electrically connected to one end of the resistor R537 and one end of the resistor R536, a second end of the resistor R536 is electrically connected to an external hydrogen concentration sensor, an emitter of the transistor Q7 is electrically connected to one end of the resistor R112 and one end of the resistor R535, and a second end of the resistor R535 are electrically connected to a second end of the resistor R537, a first end of the capacitor C254, a second end of, The other end of the resistor R537 and one end of the capacitor C254 are both grounded, the other end of the resistor R112 is respectively electrically connected with the other end of the capacitor C254, the cathode of the diode D107, the cathode of the diode D106 and one end of the resistor R111, the anode of the diode D107 is grounded, the cathode of the diode D106 is electrically connected with the control circuit, the collector of the triode Q7 is respectively electrically connected with the other end of the resistor R111 and one end of the resistor R538, and the other end of the resistor R538 is electrically connected with the control circuit.
The communication circuit 8 includes a resistor R20 (with a resistance value of 1K Ω), a resistor R21 (with a resistance value of 10K Ω), a resistor R22 (with a resistance value of 10K Ω), a resistor R23 (with a resistance value of 10K Ω), a resistor R24 (with a resistance value of 60.4 Ω), a resistor R25 (with a resistance value of 60.4 Ω), a resistor R26 (with a resistance value of 0 Ω), a resistor R27 (with a resistance value of 0 Ω), a capacitor C37 (with a capacitance value of 10pF), a capacitor C38 (with a capacitance value of 10uF), a capacitor C39 (with a capacitance value of 0.1uF), a capacitor C40 (with a capacitance value of 10nF), a capacitor C41 (with a capacitance value of 10pF), a capacitor C42 (with a capacitance value of 0.1uF), a triode Q1 (with an sd of MMS 9013-L-1050), a common mode filter T1 (with a model B82789C0513N001), a chip U6 (with a model of TJA model of 1050T) and a chip 18 (with a relationship of CAN 1), and the components and;
as shown in fig. 7, a chip U6 is a bus signal transceiver, a first pin and a fourth pin of U6 are respectively connected to a bus signal transmitting and signal receiving port of a control circuit, a seventh pin and a sixth pin of U6 are respectively high and low level pins of bus data, and the pins are filtered by a filter formed by a common mode filter T1, a capacitor C37, a capacitor C41 and a capacitor C40 and then accessed to a bus network for information interaction of the bus data, so as to implement bus communication between the controller and other external devices; a chip U18 in the communication circuit is a bus ESD protection device, a resistor R24 and a resistor R25 are terminal matching resistors of a bus communication network, a resistor R20, a resistor R21 and a triode Q1 are enabling control pins of a chip U6 and are directly connected to a control circuit for enabling control, a resistor R22, a resistor R23, a resistor R26 and a resistor R27 are occupation resistors of the circuit, and the chip U18 is selectively occupied by a 0 omega resistor during mounting and mounting.
The pressure monitoring circuit 4 includes a resistor R527 (with a resistance value of 10K Ω), a resistor R528 (with a resistance value of 10K Ω), a resistor R529 (with a resistance value of 51K Ω), a resistor R530 (with a resistance value of NC), a capacitor C252 (with a capacitance value of 1nF), a diode D104 (with a model BAT54S/SOT), and a diode D105 (with a model BAT54S/SOT), and the specific connection relationship among the components is as shown in fig. 8;
as shown in fig. 8, the pressure monitoring circuit 4 is an analog voltage signal acquisition circuit, one end of the resistor R529 is connected to the pressure sensor, and a voltage divider circuit is formed by the resistor R530 and a resistor signal of the connected pressure sensor, so as to convert the pressure sensor signal into a voltage signal, and then the voltage divider circuit is connected to the resistor R527 for current limiting and then connected to an analog quantity acquisition port of the control circuit, so as to complete detection processing of the signal acquired by the pressure sensor; the resistor R528 is an occupancy resistor, and does not need to be mounted, the capacitor C252 is a filter capacitor, and the diode D104 and the diode D105 are ESD protection devices of the input interface of the control circuit.
The power supply circuit 1 includes a resistor R1 (having a resistance value of 47K Ω), a resistor R2 (having a resistance value of 100K Ω), a resistor R3 (having a resistance value of 11.3K Ω), a resistor R273 (having a resistance value of 12K Ω), a capacitor C7 (having a capacitance value of 10nF), a capacitor C8 (having a capacitance value of 10uF), a capacitor C9 (having a capacitance value of 10uF), a capacitor C10 (having a capacitance value of 10uF), a capacitor C12 (having a capacitance value of 0.1F), a capacitor C13 (having a capacitance value of 220uF), a capacitor C14 (having a capacitance value of 10nF), a capacitor C15 (having a capacitance value of 0.1uF), a capacitor C16 (having a capacitance value of 22uF), a capacitor C17 (having a capacitance value of 0.1uF), a capacitor C5 (having a capacitance value of 4.7uF), a capacitor C23 (having a capacitance value of 10uF), an inductor L2 (having an inductance value of 15uH), a diode D4 (having a diode SS 6342-28), a fuse id 686), a fuse No. 869 (No. 3), a fuse No. 4), and No. 7F), and No. 7 No., Please refer to fig. 9 for a specific connection relationship among the chips U2 (model number TPS5430), U3 (model number NX1117C50Z) and U91 (model number MBR20100 CS-LX);
as shown in fig. 9, an external DC24V power supply is connected to a circuit from one end of a fuse F3, passes through a chip U91, is protected by a diode D92 (clamp diode), and enters a chip U2 after being filtered by a capacitor C8, a capacitor C9 and a capacitor C10, the chip U2 is a power supply DC-DC conversion chip, and converts a direct-current 24V power supply into a DC12V power supply required by a circuit board system, where the diode D4 is a zener diode, the capacitor C23, the capacitor C12, the capacitor C13 and the capacitor C14 are filter capacitors, and the converted DC12V power supply is filtered; the chip U3 is a DC-DC linear power supply chip, and in fact, the DC12V power supply is converted into a DC5V power supply required by the control circuit board system, wherein the capacitor C15 and the capacitor C16 are the front-stage filter capacitors of the conversion chip U3, and the capacitor C17 and the capacitor C18 are the rear-stage filter capacitors of the conversion chip U3.
Referring to fig. 4, the circuit structure of the hydrogen outlet monitoring circuit 6 is the same as that of the hydrogen inlet monitoring circuit 2.
The control circuit 5 comprises a control chip, and the model of the control chip is FS32K 146.
In summary, the monitoring circuit of the hydrogen supply system for the hydrogen fuel cell provided by the utility model monitors and distributes the system power supply by arranging the power circuit; a hydrogen injection port monitoring circuit is arranged to monitor the state of the hydrogen at the injection port; a flow valve control circuit is arranged to collect and output signals of the flowmeter and the regulating valve; a hydrogen concentration monitoring circuit is arranged to monitor the hydrogen concentration state of the hydrogen storage equipment; this scheme passes through power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, control circuit, hydrogen export monitoring circuit, flow valve control circuit, the cooperation between communication circuit and the hydrogen concentration monitoring circuit, realizes carrying out real time monitoring to the hydrogen state in the hydrogen storage equipment to guarantee the security that hydrogen was used.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (6)
1. The utility model provides a monitoring circuit of hydrogen fuel cell hydrogen supply system, its characterized in that, includes power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, control circuit, hydrogen export monitoring circuit, flow valve gate control circuit, communication circuit and hydrogen concentration monitoring circuit, control circuit is connected with power supply circuit, hydrogen filling opening monitoring circuit, temperature monitoring circuit, pressure monitoring circuit, hydrogen export monitoring circuit, flow valve gate control circuit, communication circuit and hydrogen concentration monitoring circuit electricity respectively.
2. The monitoring circuit of the hydrogen supply system of the hydrogen fuel cell according to claim 1, wherein the hydrogen injection port monitoring circuit comprises a resistor R100, a resistor R292, and a photocoupler U80, a first end of the photocoupler U80 is electrically connected to an external infrared sensor circuit, a second end of the photocoupler U80 is electrically connected to one end of the resistor R292, the other end of the resistor R292 is grounded, a third end of the photocoupler U80 is grounded, a fourth end of the photocoupler U80 is electrically connected to one end of the resistor R100 and the control circuit, respectively, and the other end of the resistor R100 is electrically connected to the control circuit.
3. The monitoring circuit of the hydrogen supply system of the hydrogen fuel cell according to claim 1, wherein the temperature monitoring circuit comprises an NTC temperature detection processing circuit, the NTC temperature detection processing circuit comprising a resistor R89, a resistor R523, a resistor R524, a resistor R525, a resistor R526, a capacitor C249, a capacitor C250, a capacitor C251, a chip U81, and a chip U82;
a first pin of the chip U82 is electrically connected with one end of a resistor R523 and one end of a resistor R525 respectively, a second pin of the chip U82 is electrically connected with one end of a resistor R89, the other end of the resistor R89 is electrically connected with a third pin of the chip U82, a fourth pin of the chip U82 is electrically connected with an external NTC temperature sensor, a fifth pin of the chip U82 and a sixth pin of the chip U82 are both grounded, a seventh pin of the chip U82 is electrically connected with one end of a resistor R524, the other end of the resistor R524 is electrically connected with one end of a capacitor C251 and a control circuit respectively, an eighth pin of the chip U82 is electrically connected with one end of a capacitor C250 and the control circuit respectively, the other end of the capacitor C250 and the other end of the capacitor C251 are both grounded, the other end of the resistor R523 is electrically connected with one end of the resistor R526 and the second pin of the chip U81 respectively, and the other end of the resistor R526 is electrically connected with the external NT, the first pin of the chip U81 is electrically connected with one end of a capacitor C249 and a control circuit respectively, and the other end of the resistor R525 and the third pin of the chip U81 are both grounded.
4. The monitoring circuit of a hydrogen supply system of a hydrogen fuel cell according to claim 1, wherein the temperature monitoring circuit further comprises a PTC temperature detection processing circuit, the PTC temperature detection processing circuit comprises a resistor R70, a resistor R63, a resistor R517, a resistor R518, a capacitor C247, a diode D102 and a diode D103, one end of the resistor R63 is electrically connected to one end of the resistor R518, one end of the resistor R70, one end of the capacitor C247 and one end of the resistor R517 respectively, the other end of the resistor R63 is electrically connected to a control circuit, the other end of the resistor R518 is electrically connected to an external PTC temperature sensor, the other end of the resistor R70 is electrically connected to the other end of the capacitor C247 and the other end of the resistor R70 and the capacitor C247 are all grounded, the other end of the resistor R517 is electrically connected to a cathode of the diode D103, an anode of the diode D102 and the control circuit respectively, and an anode of the diode D103 is grounded, the cathode of the diode D102 is electrically connected to the control circuit.
5. The monitoring circuit of the hydrogen supply system of the hydrogen fuel cell according to claim 1, wherein the flow valve control circuit comprises a resistor R35, a resistor R33, a resistor R37, a resistor R227, a resistor R228, an inductor L16, an inductor L17, a diode D10, a diode D81, a triode Q5, a field effect transistor Q3 and a relay U8;
a first pin of the relay U8 is electrically connected with a source of a field effect transistor Q3 and a cathode of a diode D10, respectively, a second pin of the relay U8 is electrically connected with an anode of a diode D10, a second pin of the relay U8 and an anode of a diode D10 are both grounded, a gate of the field effect transistor Q3 is electrically connected with one end of a resistor R33 and a collector of a triode Q5, respectively, a collector of the field effect transistor Q3 is electrically connected with one end of an inductor L17, one end of an inductor L16 and the other end of a resistor R33, an emitter of the triode Q5 is electrically connected with the other end of a resistor R37, an emitter of the triode Q5 and one end of a resistor R37 are both grounded, a base of the triode Q5 is electrically connected with one end of a resistor R6959 and the other end of a resistor R37, the other end of a resistor R35 is electrically connected with a control circuit, respectively, a fifth pin of the relay U8 is electrically connected with, the other end of the diode D81 is connected to ground.
6. The monitoring circuit of the hydrogen supply system of the hydrogen fuel cell according to claim 1, wherein the hydrogen concentration monitoring circuit comprises a resistor R111, a resistor R112, a resistor R535, a resistor R536, a resistor R537, a resistor R538, a capacitor C254, a diode D106, a diode D107 and a transistor Q7, a base of the transistor Q7 is electrically connected with one end of the resistor R537 and one end of the resistor R536 respectively, the other end of the resistor R536 is electrically connected with an external hydrogen concentration sensor, an emitter of the transistor Q7 is electrically connected with one end of the resistor R112 and one end of the resistor R535 respectively, the other end of the resistor R535 is electrically connected with one end of the resistor R537 and one end of the capacitor C254 respectively, the other end of the resistor R535, the other end of the resistor R537 and one end of the capacitor C254 are all grounded, the other end of the resistor R112 is electrically connected with the other end of the capacitor C537 and one end of the capacitor C111 respectively, the anode of the diode D107 is grounded, the cathode of the diode D106 is electrically connected to the control circuit, the collector of the transistor Q7 is electrically connected to the other end of the resistor R111 and one end of the resistor R538, respectively, and the other end of the resistor R538 is electrically connected to the control circuit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437335A (en) * | 2021-08-27 | 2021-09-24 | 潍柴巴拉德氢能科技有限公司 | Purging control circuit of fuel cell box |
| CN113451619A (en) * | 2021-05-13 | 2021-09-28 | 浙江大学 | Control device of proton exchange membrane fuel cell system |
| CN116404206A (en) * | 2023-06-05 | 2023-07-07 | 西北工业大学 | Control device and control method for cathode open hydrogen fuel cell system |
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2020
- 2020-06-11 CN CN202021066270.XU patent/CN212366007U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113451619A (en) * | 2021-05-13 | 2021-09-28 | 浙江大学 | Control device of proton exchange membrane fuel cell system |
| CN113437335A (en) * | 2021-08-27 | 2021-09-24 | 潍柴巴拉德氢能科技有限公司 | Purging control circuit of fuel cell box |
| CN113437335B (en) * | 2021-08-27 | 2022-01-04 | 潍柴巴拉德氢能科技有限公司 | Purging control circuit of fuel cell box |
| CN116404206A (en) * | 2023-06-05 | 2023-07-07 | 西北工业大学 | Control device and control method for cathode open hydrogen fuel cell system |
| CN116404206B (en) * | 2023-06-05 | 2023-08-29 | 西北工业大学 | Control device and control method for cathode open hydrogen fuel cell system |
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Effective date of registration: 20210525 Address after: 350000 No.8, Dongjiang West Road, Liren Industrial Zone, Hangcheng street, Changle District, Fuzhou City, Fujian Province Patentee after: Fujian Snowman Hydrogen Technology Co.,Ltd. Address before: 350000 No.8, Dongjiang West Road, Liren Industrial Zone, Hangcheng street, Changle District, Fuzhou City, Fujian Province Patentee before: Fuzhou Snowman New Energy Technology Co.,Ltd. |