Monitoring system for aluminum air fuel cell in communication base station use process
Technical Field
The invention relates to the field of power supply monitoring, in particular to a monitoring system for an aluminum air fuel cell in a communication base station use process.
Background
The communication base station is generally powered by commercial power, in order to ensure the normal work of the base station, a standby power supply system such as a lead-acid storage battery pack and a mobile oil engine needs to be equipped for the base station to charge when the power is off, and in order to ensure the normal operation of equipment, the standby power supply system supplies power to loads in the base station in time. The lead-acid storage battery has the advantages of safe use and low purchasing cost, and has the disadvantages of large volume, heavy weight, primary and secondary environmental pollution, limited power preparation time, uncertainty and strict requirement on environmental temperature, so most base stations are equipped with air conditioners. The movable oil engine can also be used as a standby power supply, but the logistics guarantee of the movable oil engine is complex, the movable oil engine needs to be attended by people, and noise pollution and waste gas pollution exist.
The aluminum air fuel cell has the advantages of high specific power and specific energy, long service life and the like, and is an environment-friendly, energy-saving and high-efficiency power generation system. Under the conditions of current resource shortage and increasingly worsened environment, the aluminum air fuel cell has stable performance and low maintenance cost, and has the advantages of low noise, low consumption, no pollution and the like during operation.
Aiming at various defects of the current lead-acid storage battery pack and the mobile oil engine, and increasing energy crisis and environmental awareness of people, the idea of seeking a new standby power supply is more and more intensive, so that the aluminum-air fuel cell is one of ideal choices of the standby power supply of the communication base station. At present, a high-power aluminum air fuel cell system is directly used as a standby power supply of a communication base station, and electric energy can be output only after electrolyte is circulated, so that the high-power aluminum air fuel cell system has the defects of low response speed and the like.
Disclosure of Invention
According to the problem that the response speed of a high-power aluminum air fuel cell serving as a standby power supply of a communication base station in the prior art is low, the invention discloses a monitoring system of the aluminum air fuel cell in the use process of the communication base station, which specifically comprises the following steps: the alternating voltage sensor is used for detecting a voltage signal of the commercial power in a working state in real time;
the electronic control unit is used for controlling the aluminum air fuel cell to start to be used as a communication base station to supply power according to the received voltage information, and the lithium battery supplies power to the communication base station in the response stage of the aluminum air fuel cell;
the direct current sensor is used for detecting a current signal of the aluminum air fuel cell in a power supply state, the direct current sensor transmits the detected current signal to the electronic control unit, and when the electronic control unit receives that the power supply current of the aluminum air fuel cell is 0, the electronic control unit controls the power supply system to stop working;
the system also comprises a protection circuit, wherein the protection circuit is connected with the lithium battery and is used for controlling the lithium battery to be charged in a safe range.
The output end of the electric control unit is connected with the output end of the protection circuit in parallel and then connected with the input end of the DC/DC converter, and the DC/DC converter converts the output voltage of the aluminum air fuel cell or the lithium battery to the power supply voltage required by the communication base station.
The liquid path input end of the aluminum air fuel cell is connected with a circulating pump, the circulating pump is connected with an electrolyte storage tank, and the electrolyte storage tank is connected with a heat exchanger.
The system further comprises a charging circuit, wherein the output end of the charging circuit is connected with the lithium battery, and the input end of the charging circuit is connected with the input end of the commercial power of the communication base station.
The protection circuit at least comprises an ideal diode control chip and a field effect transistor.
The lithium battery is used as energy supplement of a load at the initial starting stage of the aluminum air fuel cell, and can quickly respond to power supply of the communication base station to prevent the equipment from being in a power-off state.
By adopting the technical scheme, the monitoring system for the aluminum-air fuel cell in the use process of the communication base station solves the problem of low response speed of the high-power aluminum-air fuel cell as a standby power supply of the communication base station, adopts the lithium battery to supply power to the communication base station in the reaction stage of the aluminum-air fuel cell to ensure the safe and stable work of the communication base station, and solves the problem of long no-load running time and self-power consumption of the aluminum-air fuel cell by acquiring a mains supply voltage signal and a direct current signal as a starting and stopping signal of the aluminum-air fuel cell, so that the system can be widely applied to a monitoring system for the work of the aluminum-air fuel cell.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic circuit diagram of the protection circuit of the present invention.
In the figure: 1. an aluminum air fuel cell; 2. a heat exchanger; 3. an electrolyte storage tank; 4. a circulation pump; 5. an electronic control unit; 6. a lithium battery; 7. a protection circuit; 8. a DC/DC converter; 9. a direct current sensor; 10. an alternating voltage sensor; 11. a communication base station; 12. a charging circuit.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
the monitoring system of the aluminum air fuel cell in the use process of the communication base station as shown in fig. 1 comprises an aluminum air fuel cell 1, an electric control unit 5, a lithium battery 6, a protection circuit 7, a DC/DC converter 8, a heat exchanger 2, a circulating pump 4, an electrolyte storage tank 3, a direct current sensor 9, an alternating voltage sensor 10 and a charging circuit 12. The alternating voltage sensor 10 is used for detecting the working state of the mains supply, when the mains supply fails, the lithium battery 6 provides energy for supplement in time, meanwhile, the electric control unit 5 starts the circulating pump 4, and the aluminum air fuel cell system starts to work and normally outputs electric energy. The direct current sensor 9 is used for detecting the power supply current of the aluminum air fuel cell 1 and transmitting the power supply current to the electronic control unit 5, when the electronic control unit 5 detects that the power supply current of the aluminum air fuel cell 1 is 0, the normal power supply state of the commercial power is confirmed, and the electronic control unit 5 stops the operation of the circulating pump 4.
Further, as shown in fig. 2, the positive electrode and the negative electrode of the aluminum air fuel cell 1 are connected to the input end of the electronic control unit 5, the output end of the electronic control unit 5 is connected to the input end of the DC/DC converter 8, and the output end of the DC/DC converter 8 is connected to the communication base station 11 through the direct current sensor 9; the lithium battery 6 is used for providing energy supplement when the aluminum air fuel cell 1 is started, the output end of the lithium battery 6 is connected with the input end of the protection circuit 7, the protection circuit 7 consists of an ideal diode control chip and a field effect tube, the output end of the protection circuit 7 and the output end of the electric control unit 5 are connected in parallel to the input end of the DC/DC converter 8, and the lithium battery 6 is prevented from being charged with large current; the commercial power input end of the communication base station is connected with the input end of a charging circuit 12, and the output end of the charging circuit 12 is connected with a lithium battery 6; the mains supply supplies power to the communication base station 11 on one hand, and simultaneously charges the lithium battery 6 through the charging circuit 12, so that the lithium battery 6 is always kept in a full charge state; the circulating pump 4 is used for enabling the electrolyte in the electrolyte storage tank 3 to flow through the aluminum air fuel cell 1 and the heat exchanger 2, and the electrolyte can flow in a circulating mode conveniently. The DC/DC converter 8 converts the output voltage of the aluminum air fuel cell 1 to the supply voltage required by the communication base station 11. The input end of the alternating voltage sensor 10 is connected to the commercial power input end of the communication base station, and the output end of the alternating voltage sensor 10 is connected with the input end of the electric control unit 5 and used for detecting the working state of commercial power.
Furthermore, the protection circuit 12 adopts a field effect transistor with model number FDH3632 and a diode management chip LTC4537 to form an ideal diode protection circuit, and field effect transistors and diode management chips with other model numbers are all suitable for the protection circuit, so that 3 groups are used in parallel in order to reduce the on-resistance of the protection circuit.
The invention discloses a monitoring system of an aluminum air fuel cell in the use process of a communication base station, which ensures the normal work of the communication base station under the condition of combining a commercial power, the aluminum air fuel cell and a lithium battery, simultaneously charges the lithium battery in real time in the power supply process to ensure that the lithium battery is always in a full charge state, and solves the problem of long no-load operation time and self-power consumption of the aluminum air fuel cell by acquiring a commercial power voltage signal and a direct current signal as a starting and stopping signal of the aluminum air fuel cell.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.