CN212542502U

CN212542502U - Hydrogen quantity monitoring device for hydrogen fuel cell exhaust gas

Info

Publication number: CN212542502U
Application number: CN202021370185.2U
Authority: CN
Inventors: 杨汉卿; 夏月
Original assignee: New Energy Technology Shandong Co ltd
Current assignee: New Energy Technology Shandong Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-02-12
Anticipated expiration: 2030-07-14

Abstract

A hydrogen fuel cell exhaust gas hydrogen amount monitoring device comprises a stabilized voltage power supply, a power plug, a power socket, a short message circuit, a hydrogen amount detection probe and a reference circuit; the reference circuit has the same multiple paths, the power sockets have the same multiple paths, and the multiple paths of reference circuits, the voltage-stabilized power supply, the short message circuit and the multiple power sockets are arranged in the element box; the hydrogen quantity detection probe is arranged in an exhaust pipe of the hydrogen fuel cell stack; the stabilized voltage supply is electrically connected with the hydrogen quantity detection probe, the short message circuit, the multi-path reference circuit, the power plug and the power socket. This novel can be according to a plurality of emitting diode receive the electricity luminous only, the audio-visual suggestion hydrogen content is how much, can reduce the maintenance personal and judge the time of hydrogen fuel cell group output voltage abnormal reason trouble, and is in unmanned running state at hydrogen fuel cell group, can give relevant personnel SMS suggestion the very first time when hydrogen volume is many in the exhaust waste gas, in time carry out the fault discharge, guaranteed hydrogen fuel cell safe operation.

Description

Hydrogen quantity monitoring device for hydrogen fuel cell exhaust gas

Technical Field

The utility model relates to a fuel cell field, especially a hydrogen fuel cell exhaust gas hydrogen volume monitoring devices.

Background

A Fuel Cell (Fuel Cell) is a power generation device that directly converts chemical energy existing in Fuel and oxidant into electric energy, and has the advantages of high electric energy conversion efficiency (the theoretical power generation efficiency can reach 85% -90%), environmental protection and the like, so the Fuel Cell has wider application in national defense, traffic and industry. The fuel cell is mainly composed of a plurality of single cells which are connected in series to form a fuel cell stack, and the single cell connected in series is more than one when the voltage is higher. The fuel cell using hydrogen as fuel has a higher power density than other fuel cells, and the discharged by-products are water or water vapor, which does not cause any environmental pollution, and thus is widely used in fuel cells.

In practical application of the existing hydrogen fuel cell stack, after the input hydrogen enters the hydrogen channel of each single cell, the full and complete reaction cannot be ensured, that is, the byproducts generated by the reaction not only contain water and water vapor, but also contain a certain amount of unreacted hydrogen. In practical situations, the amount of hydrogen discharged when the hydrogen fuel cell stack normally operates does not change much, and if the amount of discharged hydrogen increases, a single cell inside the hydrogen fuel cell stack may fail (the direct result is that the output voltage of the hydrogen fuel cell stack decreases, etc.), resulting in that relatively more unreacted hydrogen is directly discharged. Based on the above, in order to ensure the normal operation of the hydrogen fuel cell stack, it is necessary to monitor the amount of hydrogen in the exhaust gas discharged from the hydrogen fuel cell stack in real time. In the prior art, no real-time detection device is provided for the discharge amount of hydrogen in the exhaust gas of the hydrogen fuel cell stack, and in general, after the output voltage of the hydrogen fuel cell stack is reduced, maintenance personnel can eliminate the faults one by one. Because the output voltage abnormality of the hydrogen fuel cell stack is not only caused by insufficient reaction of hydrogen, but also possibly caused by low input total hydrogen amount or a fault caused by a voltage stabilizing output system of the hydrogen fuel cell stack, and the like, when maintenance personnel specifically maintain, the maintenance personnel can carry out one-to-one investigation on the possible fault reasons; because the corresponding discharged fault programs are more, the fault point is not easy to find by maintenance personnel as soon as possible, the maintenance efficiency is improved, and the normal application of the hydrogen fuel cell is more or less limited.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the existing hydrogen fuel cell can not effectively monitor the discharge amount of hydrogen in the waste gas of the hydrogen fuel cell set in real time due to the structure limitation, related personnel can not grasp the hydrogen amount in the waste gas in real time and can not provide technical support for maintaining the hydrogen fuel cell set and ensuring the safe operation of the hydrogen fuel cell set, the utility model provides a device which can monitor the hydrogen content in the waste gas discharged by the hydrogen fuel cell set in real time, visually prompt the hydrogen content according to the number of the LEDs which are electrified and luminous, and can judge the output voltage reduction reason of the hydrogen fuel cell set according to the luminous condition of the LEDs after the maintenance personnel arrives at the site, whether the hydrogen reaction of the single hydrogen fuel cell in the device is insufficient or not, further can reduce the time for judging the output voltage abnormal reason fault of the hydrogen fuel cell set and ensure that the hydrogen fuel cell set is in an unmanned operation state, when the amount of hydrogen in the discharged waste gas is large (a reference can be set), short message prompt can be given to related personnel at the first time, fault discharge can be carried out in time, and the hydrogen amount monitoring device for the discharged gas of the hydrogen fuel cell ensures safe operation of the hydrogen fuel cell set as far as possible.

The utility model provides a technical scheme that its technical problem adopted is:

a hydrogen fuel cell exhaust gas hydrogen amount monitoring device comprises a stabilized voltage power supply, a power plug, a power socket and a short message circuit, and is characterized by also comprising a hydrogen amount detection probe and a reference circuit; the reference circuit has the same multiple paths, the power sockets have the same multiple paths, and the multiple paths of reference circuits, the voltage-stabilized power supply, the short message circuit and the multiple power sockets are arranged in the element box; the hydrogen quantity detection probe is arranged in an exhaust pipe of the hydrogen fuel cell stack; the two ends of the power output of the stabilized voltage power supply are respectively and electrically connected with the two ends of the power input of the hydrogen quantity detection probe, the short message circuit and the multi-path reference circuit, and the signal output end of the hydrogen quantity detection probe is electrically connected with the signal input end of the multi-path reference circuit; the power sockets are electrically connected with the signal output ends of the multi-path reference circuit respectively, the power plug is electrically connected with the signal input end of the short message circuit, and the power plug is inserted into the jack of one of the sockets.

Further, the regulated power supply is an alternating current direct current switching power supply module.

Further, the short message circuit is a short message alarm module.

Furthermore, the positive power supply input end of the hydrogen quantity detection probe is connected with a resistor in series.

Furthermore, each standard circuit comprises an adjustable resistor, an NPN triode, a light emitting diode and a resistor, wherein the adjustable resistor, the NPN triode, the light emitting diode and the resistor are connected through a circuit board in a wiring mode, one end of the adjustable resistor is connected with a base electrode of the NPN triode, a collector electrode of the NPN triode is connected with a negative electrode of the light emitting diode, and a positive electrode of the light emitting diode is connected with one end of the.

Further, the adjustable resistance values of the multiple paths of reference circuits are adjusted differently.

This novel beneficial effect is: this novel hydrogen volume test probe can real-time supervision hydrogen fuel cell group exhaust in the waste gas hydrogen content, and output voltage signal gets into multichannel reference circuit's signal input part, the bigger signal voltage of hydrogen volume of leaking is higher, otherwise lower, because multichannel reference circuit's adjustable resistance is different, and like this, multichannel reference circuit's input signal voltage can be different, and then multichannel reference circuit's emitting diode can get electric according to the hydrogen volume size of leaking luminous, it is luminous that the emitting diode who gets electric only more represents the hydrogen volume of leaking more, otherwise less. Therefore, the hydrogen content can be visually prompted by the plurality of light-emitting diodes which are powered on and emit light, and a maintenance worker can judge the reason of the reduction of the output voltage of the hydrogen fuel cell set according to the number of light-emitting diodes when arriving at the site, and whether the hydrogen reaction of one or more single hydrogen fuel cells inside the hydrogen fuel cell set is insufficient or not, so that the time for judging the fault of the abnormal reason of the output voltage of the hydrogen fuel cell set can be reduced (if the discharged hydrogen quantity is appropriate, the hydrogen reaction of the single hydrogen fuel cell inside the hydrogen fuel cell set is not required to be checked, and the maintenance efficiency is correspondingly improved). This novel hydrogen fuel cell group is in unmanned running state, and when hydrogen volume was many in the exhaust waste gas (can set up the benchmark), SMS circuit can give relevant personnel SMS suggestion the very first time, in time carries out the trouble and discharges, has guaranteed hydrogen fuel cell group's safe operation as far as possible. Based on the above, this is novel has good application prospect.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention:

fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, a hydrogen amount monitoring device for hydrogen gas discharged from a hydrogen fuel cell comprises a regulated power supply 1, a power plug 2, a power socket 3, a short message circuit 4, a hydrogen amount detection probe 5 and a reference circuit 6; the reference circuit 6 has the same multiple paths (the embodiment is set to 3 paths for descriptive convenience), the power sockets 3 have the same multiple paths (3 in the embodiment), the multiple paths of reference circuits 6, the stabilized voltage power supply 1, the short message circuit 4 and the multiple power sockets 3 are installed on a circuit board, and the circuit board is installed in the component box 7; the hydrogen quantity detection probe 5 is independently installed in a plastic box 8 with a plurality of vent holes at the front end, and the plastic box 8 of the hydrogen quantity detection probe is installed in an exhaust pipe 9 of the hydrogen fuel cell set through a screw nut.

Referring to fig. 2, the regulated power supply a is a finished product of a 220V/6V/50W ac 220V to 6V dc switching power supply module, and has two

input terminals

1 and 2 pins and two

output terminals

3 and 4 pins. The power plug CT is a coaxial single-wire power plug, and the power socket CZ is a coaxial single-wire power socket. The short message circuit is a short message module A1, the short message module A1 is a short message alarm module finished product of a GSM DTU SIM800C model, the short message alarm module finished product A1 has two

power input ends

1 and 2, eight signal input ends 3-10, after each signal input end inputs a low level signal, the short message alarm module finished product A1 sends a short message through a wireless mobile network, the short message alarm module finished product A1 can store short messages with different contents (in the embodiment, a manager edits a short message in advance through the self function of the short message alarm module finished product, the content is 'abnormal operation of a hydrogen fuel cell', and the like, each short message content corresponds to one signal input end, after one signal input end is triggered by the low level, the short message alarm module finished product A1 can automatically send the short message, at most three telephone numbers can send the short message simultaneously, the hydrogen gas quantity detection probe T is a gas-sensitive device of the model QM-N5, the positive power supply input end of the hydrogen quantity detection probe T is connected in series with a resistor R, and a pin 1 (the other end of the resistor R) at the positive power supply input end of the hydrogen quantity detection probe T is connected with a pin 3 at the first measuring electrode. The first reference circuit comprises an adjustable resistor RP1, an NPN triode Q1, a light emitting diode VL1 and a resistor R1 which are connected through circuit board wiring, one end of the adjustable resistor RP1 is connected with the base electrode of the NPN triode Q1, the collector electrode of the NPN triode Q1 is connected with the negative electrode of the light emitting diode VL1, and the positive electrode of the light emitting diode VL1 is connected with one end of the resistor R1. The second circuit of reference circuit comprises an adjustable resistor RP2, an NPN triode Q2, a light emitting diode VL2 and a resistor R2 which are connected through circuit board wiring, one end of the adjustable resistor RP2 is connected with the base electrode of the NPN triode Q2, the collector electrode of the NPN triode Q2 is connected with the negative electrode of the light emitting diode VL2, and the positive electrode of the light emitting diode VL2 is connected with one end of the resistor R2. The third reference circuit comprises an adjustable resistor RPN, an NPN triode QN, a light emitting diode VLN and a resistor RN, and is connected through circuit board wiring, one end of the adjustable resistor RPN is connected with a base electrode of the NPN triode QN, a collector electrode of the NPN triode QN is connected with a negative electrode of the light emitting diode VLN, and a positive electrode of the light emitting diode VLN is connected with one end of the resistor RN. The resistances of the adjustable resistors RP1, RP2 and RPN of the three-way reference circuit are adjusted differently, and the resistance values of the adjustable resistors RP1, the resistance values of the adjustable resistors RP2 and the resistance values of the RPN are the smallest, the resistance values of the adjustable resistors RP2 are smaller, and the resistance values of the adjustable resistors RPN are larger.

As shown in fig. 2,

pins

1 and 2 of the power input terminal of the regulated power supply a and two poles of the ac 220V power supply are connected by leads,

pins

3 and 4 of the power output terminal of the regulated power supply a and pins 2 and 1 (the other end of the resistor R performs the functions of voltage reduction and current limitation) of the power input terminal of the hydrogen quantity detection probe T,

pins

1 and 2 of the power input terminal of the short message module a1, the other end of the power input terminal of the three-way reference circuit, the other end of the resistor R1 and the emitter of the NPN triode Q1, the other end of the resistor R2 and the emitter of the NPN triode Q2, and the other end of the resistor RN and the. The 4 pins (second measuring electrodes) of the signal output end of the hydrogen quantity detecting probe T are connected with the other ends of the adjustable resistors RP1, RP2 and RPN of the signal input end of the three-way reference circuit through leads; the jacks of the three power sockets CZ1, CZ2 and CZN are respectively positioned outside a plurality of holes at the upper left end of the element box, the collectors of NPN triodes Q1, Q2 and QN at the signal output ends of the three power sockets CZ1, CZ2 and CZN and the three-way reference circuit are respectively connected through a lead, the power plug CT and the pin 3 at the signal input end of the short message module A1 are connected through a lead, the power plug CT is positioned outside the element box, and the power plug CT is inserted into the jack of one of the sockets.

As shown in fig. 2, after the 220V ac power enters

pins

1 and 2 of regulated power supply a1, its

pins

3 and 4 will output stable 5V power under the action of its internal circuit, and enter the short message circuit, hydrogen quantity detection probe T, and two power input ends of the three-way reference circuit, so that the circuits are in power-on operation. In the first path of reference circuit and the hydrogen amount detection probe T, when the amount of hydrogen in the exhaust gas discharged from the site exhaust pipe 9 is relatively small (for example, lower than 125ppM m), the resistance between the first and

second measurement electrodes

3 and 4 of the gas sensitive device T is relatively large, the conductivity is relatively small, the voltage is reduced and the current is limited by the second measurement electrode 4 through the adjustable resistor RP1, the base voltage of the NPN triode Q1 entering the NPN triode Q1 is lower than 0.7V, and the NPN triode Q1 is in a cut-off state, so that the diode VL1 does not receive an electric light-emitting prompt; when the amount of hydrogen in the exhaust gas discharged from the site exhaust pipe 9 is relatively large (for example, close to 125ppM), the resistance between the first and second measurement electrodes of the gas sensitive device T is relatively small, the conductivity is relatively large, the voltage is reduced and limited by the second measurement electrode 4 through the adjustable resistor RP1, the current enters the base voltage of the NPN triode Q1 to be higher than 0.7V, the NPN triode Q1 is in a conducting state, the collector outputs a low level to enter the negative power input end of the light emitting diode VL1, and the light emitting diode VL1 is powered on to prompt maintenance personnel that the hydrogen discharge is relatively large at the moment (at this moment, the NPN triodes Q2 and QN cannot be powered on because the adjustable resistors RP2 and RPN are relatively large in resistance, and the light emitting diodes VL2 and VLN cannot be powered on. In the second circuit of reference circuit and the hydrogen amount detection probe T, when the amount of hydrogen in the exhaust gas discharged from the site exhaust pipe 9 is relatively small (for example, lower than 150ppM), the resistance between the first and second measurement electrodes of the gas sensitive device T is relatively large, the conductivity is relatively small, the voltage is reduced and the current is limited by the adjustable resistor RP2 through the second measurement electrode 4, the base voltage of the NPN triode Q2 is lower than 0.7V, and the NPN triode Q2 is in a cut-off state, so that the diode VL2 cannot be powered to emit light for prompting; when the amount of hydrogen in the exhaust gas discharged from the site exhaust pipe is large (for example, higher than 150ppM), the resistance between the first measuring electrode and the second measuring electrode of the gas sensitive device T is relatively small, the conductivity is large, the voltage is reduced and limited by the second measuring electrode pin 4 through the adjustable resistor RP2, the current enters the base voltage of the NPN triode Q2 to be higher than 0.7V, the NPN triode Q2 is in a conducting state, the collector outputs a low level to enter the negative power input end of the light emitting diode VL2, and then the light emitting diode VL2 is powered on to emit light to prompt maintenance personnel that the hydrogen discharge amount is relatively large at the moment (at the moment, the light emitting diodes VL1 and VL2 are powered on to emit light, and the triode QN cannot be conducted due to the large resistance of the adjustable resistor RPN. In the third reference circuit and the hydrogen quantity detection probe T, when the quantity of hydrogen in the exhaust gas discharged by the site exhaust pipe is relatively small (for example, lower than 200ppM), the resistance between the first measuring electrode and the second measuring electrode of the gas sensitive device T is large, the conductivity is small, the voltage is reduced and limited by the second measuring electrode 4 through the adjustable resistor RPN, the base voltage of the base electrode; when the amount of hydrogen in the exhaust gas discharged by the site exhaust pipe is large (for example, higher than 200ppM), the resistance between the first measuring electrode and the second measuring electrode of the gas sensitive device T is small, the electric conductivity is larger, the voltage of the base electrode of the NPN triode QN is higher than 0.7V after the second measuring electrode 4 passes through the adjustable resistor RPN for voltage reduction and current limiting, the NPN triode QN is in a conducting state, the collector electrode outputs low level and enters the cathode power input end of the light emitting diode VLN, and then the light emitting diode VLN is electrified to emit light to prompt maintenance personnel that the hydrogen discharge is relatively large at the moment (at the moment, all the light emitting diodes VL1 and VL2 are electrified.

As shown in fig. 2, through the above circuit function, the novel hydrogen fuel cell stack can monitor the hydrogen content in the exhaust gas discharged by the hydrogen fuel cell stack in real time, and output a voltage signal to the signal input end of the three-way reference circuit, the larger the leaked hydrogen amount is, the higher the signal voltage is, and vice versa, because the resistances of the adjustable resistors RP1, RP2 and RPN of the three-way reference circuit are different, the input signal voltage of the three-way reference circuit will be different, and further the light emitting diodes VL1, VL2 and VLN of the three-way reference circuit can obtain electric light according to the leaked hydrogen amount, the more the light emitting diodes which obtain electric light represent the more the leaked hydrogen amount, and vice versa. Therefore, the three light-emitting diodes are powered to emit light, the content of hydrogen in the waste gas can be visually prompted, and a maintenance worker can judge whether the reason for the reduction of the output voltage of the hydrogen fuel cell set is caused by insufficient hydrogen reaction of one or more single hydrogen fuel cells in the hydrogen fuel cell set according to the light-emitting condition of the light-emitting diodes after arriving at the site (the three light-emitting diodes emit light to represent that the hydrogen discharge amount is large, the hydrogen reaction of a plurality of single hydrogen fuel cells in the hydrogen fuel cell set is insufficient, the two light-emitting diodes emit light to represent that the hydrogen discharge amount is large, the hydrogen reaction of a plurality of single hydrogen fuel cells in the hydrogen fuel cell set is insufficient, one light-emitting diode emits light to represent that the hydrogen discharge amount is small, and the hydrogen reaction of a plurality of single hydrogen fuel cells in the hydrogen fuel cell set is insufficient), so that the time for judging the fault caused by, after the hydrogen fuel cell is in failure, the reason for whether the hydrogen reaction of the hydrogen fuel cell inside the hydrogen fuel cell is sufficient does not need to be checked, and accordingly, the maintenance efficiency is improved).

Fig. 1 and 2 show, in this novel, in actual conditions, receive the difference that consumer power demand needs (in order to save energy, when consumer power consumption is low, some hydrogen fuel cell of hydrogen fuel cell group can be closed to managers), hydrogen fuel cell group's output can be different, output is big, so hydrogen volume is relatively many in its blast pipe exhaust waste gas, output is great, so hydrogen volume is relatively more in its blast pipe exhaust waste gas, output is less, so hydrogen volume is relatively less in its blast pipe exhaust waste gas. This novel unusual SMS warning of on-the-spot emission that can realize, just SMS remote alarm when too much in order to realize blast pipe exhaust hydrogen volume, consequently need set for different alarm threshold values (that is insert power plug CT in one in supply socket CZ1, CZ2, CZN as required). If the output power of the hydrogen fuel cell is high, when the hydrogen amount in the exhaust gas discharged by the exhaust pipe is large, the short message module A1 sends a short message when the hydrogen amount in the exhaust gas discharged by the subsequent exhaust pipe is large; when the hydrogen amount in the exhaust gas discharged by the exhaust pipe is relatively large, the power plug power socket CZ2 is connected with the short message module A1 to send short messages when the hydrogen amount in the exhaust gas discharged by the subsequent exhaust pipe is relatively large; when the hydrogen amount in the exhaust gas discharged by the exhaust pipe is relatively small, the power plug power socket CZ1 is connected with the short message module A1 to send short messages when the hydrogen amount in the exhaust gas discharged by the subsequent exhaust pipe is relatively small. The short message module A1 is prevented from sending short messages (for example, when the power plug CT is plugged into the power socket CZ 1) due to relatively small hydrogen amount when the hydrogen amount in the exhaust gas exhausted by the exhaust pipe is relatively large, and the short message module A1 cannot send short messages (for example, when the power plug CT is plugged into the power socket CZN) due to relatively large exhausted hydrogen amount when the hydrogen amount in the exhaust gas exhausted by the exhaust pipe is relatively small, so that related personnel cannot master whether the site hydrogen discharge is normal or not. When the power plug CT is plugged into the power socket CZ1, the amount of hydrogen discharged on site is relatively small, and the low level output by the collector enters pin 3 of the short message module a1 after the NPN triode Q1 is turned on, the short message module a1 will automatically push a short message for the mobile phone of the relevant manager, and the content is "the hydrogen fuel cell works abnormally". When the power plug CT is plugged into the power socket CZ2, the amount of hydrogen discharged on site is relatively large, and the low level output by the collector enters pin 3 of the short message module a1 after the NPN triode Q2 is turned on, and the short message module a1 automatically pushes a short message for the mobile phone of a relevant manager. When the power plug CT is plugged into the power socket CZN, the amount of hydrogen discharged on site is relatively large, and the low level output by the collector enters pin 3 of the short message module a1 after the NPN triode QN is turned on, and the short message module a1 can automatically push a short message for the mobile phone of the relevant manager. Through the aforesaid, this is novel is in unmanned running state at hydrogen fuel cell group, and hydrogen volume is when many in the exhaust waste gas (can set up the benchmark value according to fuel cell group actual load exhaust hydrogen volume, makes SMS module A1 just report to the police when the hydrogen discharge capacity that needs, and it is more nimble to use) SMS circuit ability very first time gives relevant personnel SMS suggestion, in time carries out the trouble and discharges, has guaranteed hydrogen fuel cell group safe operation as far as possible. The resistance value of the resistor R is 40 omega, and the light emitting diodes VL1, VL2 and VLN are red light emitting diodes (the light emitting surface is positioned outside a plurality of openings at the front end of the element box); the resistances of the resistors R1, R2 and RN are 600 omega (which plays a role in reducing voltage and limiting current); the adjustable resistors RP1, RP2, RPN were 4.7M (adjusted to 2.2M, 2.64M, 3.52M, respectively).

The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but rather can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydrogen fuel cell exhaust gas hydrogen amount monitoring device comprises a stabilized voltage power supply, a power plug, a power socket and a short message circuit, and is characterized by also comprising a hydrogen amount detection probe and a reference circuit; the reference circuit has the same multiple paths, the power sockets have the same multiple paths, and the multiple paths of reference circuits, the voltage-stabilized power supply, the short message circuit and the multiple power sockets are arranged in the element box; the hydrogen quantity detection probe is arranged in an exhaust pipe of the hydrogen fuel cell stack; the two ends of the power output of the stabilized voltage power supply are respectively and electrically connected with the two ends of the power input of the hydrogen quantity detection probe, the short message circuit and the multi-path reference circuit, and the signal output end of the hydrogen quantity detection probe is electrically connected with the signal input end of the multi-path reference circuit; the power sockets are electrically connected with the signal output ends of the multi-path reference circuit respectively, the power plug is electrically connected with the signal input end of the short message circuit, and the power plug is inserted into the jack of one of the sockets.

2. The hydrogen fuel cell exhaust gas hydrogen amount monitoring device according to claim 1, wherein the regulated power supply is an ac dc switching power supply module.

3. The device for monitoring the amount of hydrogen discharged from a hydrogen fuel cell according to claim 1, wherein the short message circuit is a short message alarm module.

4. The apparatus for monitoring the amount of hydrogen in the exhaust gas of a hydrogen fuel cell according to claim 1, wherein a resistor is connected in series to the positive power input of the hydrogen amount detection probe.

5. The apparatus according to claim 1, wherein each reference circuit includes an adjustable resistor, an NPN transistor, a light emitting diode, and a resistor, which are wired together via a circuit board, one end of the adjustable resistor is connected to a base of the NPN transistor, a collector of the NPN transistor is connected to a cathode of the light emitting diode, and an anode of the light emitting diode is connected to one end of the resistor.

6. The hydrogen fuel cell discharged gas hydrogen amount monitoring device according to claim 5, wherein the adjustable resistance values of the plurality of reference circuits are adjusted to be different.