Novel hydrogen fuel cell

Abstract

The novel hydrogen fuel cell comprises a hydrogen fuel cell body, a short message module, an ampere meter, a high-voltage detection circuit, a low-voltage detection circuit, a control circuit and a detection mechanism, the detection mechanism comprises a magnet and a reed switch, the magnet is installed at the rear side end of a pointer rotating shaft of the ammeter, and the reed switch is longitudinally installed at the rear side end of an ammeter shell at the rear upper end of the rotating shaft; and the short message module, the high-voltage detection circuit, the low-voltage detection circuit and the control circuit are arranged in the element box and are electrically connected. Based on the hydrogen fuel cell body, in the application, the high-voltage detection circuit and the low-voltage detection circuit can monitor the voltage output by the hydrogen fuel cell body in real time, and the control circuit, the detection mechanism, the ampere meter and the like can monitor the electrical load in real time; related workers can be prompted to overhaul and maintain in a short message mode, and stable and reliable work of the hydrogen fuel cell body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a novel hydrogen fuel cell. Background Art

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of water electrolysis, supplying hydrogen and oxygen to the anode and cathode respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons and passes through the external electrical load to the cathode, thereby forming a circuit path and achieving the purpose of supplying power to the electrical load. Due to its advantages of being pollution-free, noise-free and highly efficient, it has a good application prospect.

[0003] Although the existing hydrogen fuel cell technology is relatively mature and meets the needs of use to a certain extent, it still has the following technical disadvantages due to structural limitations. First, when the staff does not go to the site, they cannot understand whether the power supply voltage output by the hydrogen fuel cell is high or low. In this way, when the hydrogen fuel cell outputs abnormal voltage due to various abnormalities and the relevant staff cannot carry out targeted treatment, it may be damaged due to the power load being in a state of too high or too low voltage. Second, it does not have the function of monitoring the power load. In this way, when the power load is short-circuited, etc., it may cause damage to the hydrogen fuel cell and its related auxiliary electrical equipment. In summary, it is particularly necessary to provide a hydrogen fuel cell that not only has the functions of an ordinary hydrogen fuel cell, but also can monitor the output voltage and power load in real time. Utility Model Content

[0004] In order to overcome the drawbacks of existing hydrogen fuel cells as described in the background due to structural limitations, the utility model provides a new type of hydrogen fuel cell based on a hydrogen fuel cell body. In application, under the joint action of relevant mechanisms, the voltage level output by the hydrogen fuel cell body and the load size of the power load can be monitored in real time. When the output voltage is too high or too low, or the power load is too large, the relevant staff can be prompted to perform inspection and maintenance by SMS.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A novel hydrogen fuel cell comprises a hydrogen fuel cell body, a short message module and an ammeter, and is characterized in that it also comprises a high-voltage detection circuit, a low-voltage detection circuit, a control circuit and a detection mechanism; the detection mechanism comprises a magnet and a reed switch, the magnet is mounted on the rear side end of the pointer shaft of the ammeter, and the reed switch is mounted on the rear side end of the ammeter housing located at the rear upper end of the shaft; the short message module, the high-voltage detection circuit, the low-voltage detection circuit and the control circuit are mounted in a component box; the power output end of the ammeter and the control power input end of the high-voltage detection circuit are electrically connected, the signal output ends of the high-voltage detection circuit and the low-voltage detection circuit, the other end of the reed switch and the signal input end of the control circuit are electrically connected, and the power output end of the control circuit and one end of the power input of the short message module are electrically connected; the trigger end of the high-voltage detection circuit and the signal input end of the low-voltage detection circuit are electrically connected.

[0007] Furthermore, the reed switch is a normally open contact type reed switch, and its static contact is horizontally located at the lower end. When the power load of the hydrogen fuel cell body exceeds a threshold value, the upper end of the magnet is located at the lower end of the reed switch shell, and the magnet force acts on the reed switch, and the moving contact and static contact inside the reed switch are closed.

[0008] Furthermore, the high-voltage detection circuit includes an electrically connected resistor, an adjustable resistor and an operational amplifier, the positive power supply input terminal of the operational amplifier is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the reverse input terminal of the operational amplifier, one end of the adjustable resistor is connected to one end of the third resistor and the same-direction input terminal of the operational amplifier, and the other end of the third resistor, the other end of the second resistor and the negative power supply input terminal of the operational amplifier are connected.

[0009] Furthermore, the low-voltage detection circuit includes an operational amplifier, a resistor and an operational amplifier that are electrically connected, the positive power supply input terminal of the operational amplifier is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the same-direction input terminal of the operational amplifier, and the other end of the second resistor is connected to the negative power supply input terminal of the operational amplifier.

[0010] Furthermore, the control circuit includes three electrically connected diodes, the cathodes of the three diodes are connected, and the negative power input terminal of the SMS module is connected to the first signal input terminal.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model is based on the hydrogen fuel cell body. During application, the high-voltage detection circuit and the low-voltage detection circuit can monitor the voltage output by the hydrogen fuel cell body in real time. The control circuit, the detection mechanism and the ammeter can monitor the size of the power load in real time. When the output voltage is too high or too low, or the power load is too large, the relevant staff can be prompted to perform inspection and maintenance via SMS, thereby ensuring the stable and reliable operation of the hydrogen fuel cell body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the overall structure and the partially enlarged structure of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in, a new type of hydrogen fuel cell includes a hydrogen fuel cell body G1, a power module A1, a short message module A5, an ammeter A, a battery G2, and also has a high-voltage detection circuit 1, a low-voltage detection circuit 2, a control circuit 3, and a detection mechanism; the detection mechanism includes a rectangular permanent magnet sheet CT and a reed switch GH, the lower end of the magnet sheet CT is longitudinally distributed and glued to the left end of the rear part of the pointer shaft 4 of the ammeter, and the reed switch GH is longitudinally distributed and glued to the right part of the rear side end of the ammeter housing located at the rear upper end of the shaft; the battery G2, the ammeter A, the power module A1, the short message module A5, the high-voltage detection circuit 1, the low-voltage detection circuit 2, and the control circuit 3 are installed on the circuit board in the component box 5, and the component box 5 is installed in the electric control box of the hydrogen fuel cell body.

[0016] Figure 1 , 2 As shown in , the reed switch GH is a normally open contact type reed switch, and its static contact is horizontally located at the lower end. When the power load of the hydrogen fuel cell body G1 exceeds the threshold, the upper end of the magnet CT is located at the lower end of the shell of the reed switch GH (2 mm), and the force of the magnet CT acts on the reed switch GH, and the internal moving contact and static contact of the reed switch GH are closed. The high-voltage detection circuit includes resistors R, R2, and R1 connected by circuit board wiring, an adjustable resistor RP1, and an operational amplifier A3. The positive power input terminal 7 pin of the operational amplifier A3 is connected to one end of the first resistor R, the other end of the first resistor R is connected to one end of the second resistor R2 and the reverse input terminal 2 pin of the operational amplifier A3, one end of the adjustable resistor RP1 is connected to one end of the third resistor R1 and the same direction input terminal 3 pin of the operational amplifier A3, and the other end of the third resistor R1, the other end of the second resistor R2, and the negative power input terminal 4 pin of the operational amplifier A3 are connected. The low voltage detection circuit includes resistors R3, R4 and an op amp A4 connected via circuit board wiring, the positive power input terminal 7 pin of the op amp A4 is connected to one end of the first resistor R3, the other end of the first resistor R3 is connected to one end of the second resistor R4 and the same direction input terminal 3 pin of the op amp A4, and the other end of the second resistor R4 is connected to the negative power input terminal 4 pin of the op amp A4. The control circuit includes three diodes VD1, VD2, and VD3 connected via circuit board wiring, the three diodes VD1, VD2, and VD3 are connected at their cathodes, and the negative power input terminal 2 pin of the SMS module A5 is connected to the first signal input terminal 3 pin via a wire.

[0017] Figure 1 , 2 As shown in , the positive power output terminal of the hydrogen fuel cell body G1 and the power input terminal of the ammeter A are connected via wires, and the power output terminal of the ammeter A and the negative power output terminal of the hydrogen fuel cell body G1 are connected via wires to the power input terminals 1 and 2 of the power module A1, the other end of the adjustable resistor RP1 at the control power input terminal of the high-voltage detection circuit, and the other end of the resistor R1. The power output terminals 3 and 4 of the power module A1 and the power input terminals 7 and 4 of the op amp A3 of the high-voltage detection circuit, the power input terminals 7 and 4 of the op amp A4 of the low-voltage detection circuit, the two poles of the battery G2, and one end of the reed switch GH (connected to the 3rd pin of the power module A1) are connected via wires. The signal output terminal op amp A3 of the high-voltage detection circuit, the signal output terminal op amp A4 of the low-voltage detection circuit, the other end of the reed switch GH, and the positive poles of the three diodes VD1, VD2, and VD3 are connected via wires. The negative electrodes of the three diodes VD1, VD2, and VD3, the negative power output terminal 4 of the power module A1, and the power input terminals 1 and 2 of the SMS module A5 are connected via wires. One end of the triggering end adjustable resistor RP1 of the high voltage detection circuit and the reverse input terminal 2 of the signal input end op amp A4 of the low voltage detection circuit are connected via wires. The power output terminals of the power load and ammeter A and the negative power output terminal of the hydrogen fuel cell body G1 are connected via wires.

[0018] Figure 1 , 2As shown in , after the hydrogen fuel cell body G1 is powered on, hydrogen and oxygen are supplied to the anode and cathode respectively through the reverse reaction of water electrolysis. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons through the external power load to reach the cathode, thereby forming a circuit path to achieve the purpose of supplying power to the power load (the above is a mature technology, and this application does not repeat it, nor does it provide any protection for this technical solution). After the DC power output by the hydrogen fuel cell body G1 enters the power input terminal of the power module A1, the 3rd and 4th pins of the power module A1 output a stable DC 12V power supply to enter the high-voltage detection circuit and the low-voltage detection circuit and the power input terminal of the detection mechanism (the battery G2 is usually floating charged to ensure that when the hydrogen fuel cell body stops outputting power, the relevant circuits can still be powered on). The greater the power load of the hydrogen fuel cell body G1, the greater the rightward rotation angle of the pointer of the ammeter A, and vice versa, the smaller the rightward rotation angle. In actual situations, when the load is relatively small (for example, less than 100A), the pointer shaft 4 rotates to the right at a relatively small angle, the magnet CT will not be at the lower end of the reed switch GH, and the internal contacts of the reed switch GH will be open, so the SMS module A5 will not send out the first SMS; when the load is relatively large (for example, greater than 100A), the pointer shaft 4 rotates to the right at a relatively large angle, the magnet CT will be at the lower end of the reed switch GH, and the internal contacts of the reed switch GH will be closed, then the 12V power supply will be unidirectionally conducted through the reed switch GH through the diode VD3 into the positive power input terminal 1 of the SMS module A5. Since the 2nd and 3rd pins of the SMS module A5 are connected together, the SMS module A5 will be powered on and send out a SMS at this moment, indicating that the power load current of the hydrogen fuel cell body G1 is too large.

[0019] Figure 1 , 2As shown, after the high-voltage detection circuit works, the 12V power supply enters the 2nd pin of the operational amplifier A3 through the adjustable resistors R and R2, and the voltage is about 6V. When the voltage output by the hydrogen fuel cell body G1 is normal (for example, lower than 79V, and the output no-load voltage of the hydrogen fuel cell body G1 is generally higher than 10% of the rated voltage like a battery), the voltage signal enters the 3rd pin of the operational amplifier A3 through the adjustable resistors RP1 and R1, and the voltage is lower than the 2nd pin voltage. The 6th pin of the operational amplifier A3 outputs a low level, and then the SMS module A5 will not be powered on, indicating that the output voltage of the hydrogen fuel cell body G1 is not too high. When the voltage output by the hydrogen fuel cell body G1 is abnormal (for example, higher than 79V), the voltage signal enters the 3rd pin of the operational amplifier A3 through the adjustable resistor RP1 and the resistor R1, and the voltage is higher than the 2nd pin voltage. The 6th pin of the operational amplifier A3 outputs a high level, and the high level is unidirectionally conducted through the diode VD1 to enter the positive power input terminal 1st pin of the SMS module A5. Since the 2nd and 3rd pins of the SMS module A5 are connected together, the SMS module A5 will be powered to work and send a text message at this moment, indicating that the output voltage of the hydrogen fuel cell body G1 is too high. After the low-voltage detection circuit works, the 12V power supply enters the 3rd pin of the operational amplifier A4 through the adjustable resistor R3 and R4, and the voltage is about 5.5V. When the voltage output by the hydrogen fuel cell body G1 is normal (for example, higher than 72V when loaded), the voltage signal enters the 2nd pin of the operational amplifier A3 through the adjustable resistor RP1 and the resistor R1, and the voltage is higher than the 3rd pin voltage. The 6th pin of the operational amplifier A3 outputs a low level, then the SMS module A5 will not be powered to work, indicating that the output voltage of the hydrogen fuel cell body G1 is not too low. When the voltage output by the hydrogen fuel cell body G1 is abnormal (for example, lower than 72V when under load), the voltage signal is divided by the adjustable resistors RP1 and R1 and enters the voltage at pin 2 of the operational amplifier A3, which is lower than the voltage at pin 3. Pin 6 of the operational amplifier A3 outputs a high level, which is unidirectionally conducted through the diode VD2 and enters the positive power input terminal pin 1 of the SMS module A5. Since pins 2 and 3 of the SMS module A5 are connected together, the SMS module A5 will be powered and send a text message at this moment, indicating that the output voltage of the hydrogen fuel cell body G1 is too low.

[0020] Figure 1 , 2 As shown above, the new type is based on the hydrogen fuel cell body. During application, it can monitor the voltage output by the hydrogen fuel cell body in real time and monitor the size of the power load. When the output voltage is too high or too low, or the power load is too large, it can remind the relevant staff to carry out inspection and maintenance via SMS, thus ensuring the stable and reliable operation of the hydrogen fuel cell body. Figure 2In the embodiment, the power module A1 is a finished product of a DC to DC 12V switching power module (input between 12V-120V, output 12V); the SMS module A5 is a SMS alarm module of model GSM 800, the finished SMS alarm module has two power input terminals 1 and 2, and signal input ports 3-8. After a low-level signal is input to each signal input port, the finished SMS alarm module will send a SMS message via a wireless mobile network. The SMS alarm module stores SMS messages. In this embodiment, a "working abnormality" SMS message is stored. After a low-level signal is input to the signal input port 3 of the SMS alarm module, the SMS alarm module can send a SMS message; the operational amplifiers A3 and A4 are UA741; the diodes VD1, VD2, and VD3 are 1N4007; the resistance values ​​of the resistors R, R2, R1, R3, and R4 are 10K, 10K, 6K, 6.5K, and 5.5K, respectively; the battery G2 is a lithium battery of model 12V / 5A; and the ammeter A is a 200A DC ammeter.

[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0022] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of hydrogen fuel cell, including a hydrogen fuel cell body, a short message module, and an ammeter, characterized in that: It also has a high-voltage detection circuit, a low-voltage detection circuit, a control circuit, and a detection mechanism; the detection mechanism includes a magnet and a reed switch, the magnet is installed on the rear side end of the pointer shaft of the ammeter, and the reed switch is installed on the rear side end of the ammeter housing located at the rear upper end of the shaft; the SMS module, high-voltage detection circuit, low-voltage detection circuit, and control circuit are installed in a component box; the power output end of the ammeter and the control power input end of the high-voltage detection circuit are electrically connected, the signal output ends of the high-voltage detection circuit and the low-voltage detection circuit, the other end of the reed switch and the signal input end of the control circuit are electrically connected, and the power output end of the control circuit is electrically connected to one end of the power input of the SMS module; the trigger end of the high-voltage detection circuit is electrically connected to the signal input end of the low-voltage detection circuit.

2. A novel hydrogen fuel cell according to claim 1, characterized in that: The reed switch is a normally open contact type reed switch, and its static contact is horizontally located at the lower end. When the power load of the hydrogen fuel cell body exceeds the threshold, the upper end of the magnet is located at the lower end of the reed switch shell, and the magnet force acts on the reed switch, and the moving contact and static contact inside the reed switch are closed.

3. A novel hydrogen fuel cell according to claim 1, characterized in that: The high-voltage detection circuit includes an electrically connected resistor, an adjustable resistor and an operational amplifier, wherein the positive power supply input terminal of the operational amplifier is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the reverse input terminal of the operational amplifier, one end of the adjustable resistor is connected to one end of the third resistor and the same-direction input terminal of the operational amplifier, and the other end of the third resistor, the other end of the second resistor and the negative power supply input terminal of the operational amplifier are connected.

4. A novel hydrogen fuel cell according to claim 1, characterized in that: The low voltage detection circuit includes an operational amplifier, a resistor and an operational amplifier which are electrically connected. The positive power supply input terminal of the operational amplifier is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the same direction input terminal of the operational amplifier, and the other end of the second resistor is connected to the negative power supply input terminal of the operational amplifier.

5. A novel hydrogen fuel cell according to claim 1, characterized in that: The control circuit comprises three electrically connected diodes, wherein the cathodes of the three diodes are connected, and the cathode power input terminal of the SMS module is connected to the first signal input terminal.

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