CN202872443U - Fuel-cell-based communication power supply - Google Patents
Fuel-cell-based communication power supply Download PDFInfo
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- CN202872443U CN202872443U CN 201220434831 CN201220434831U CN202872443U CN 202872443 U CN202872443 U CN 202872443U CN 201220434831 CN201220434831 CN 201220434831 CN 201220434831 U CN201220434831 U CN 201220434831U CN 202872443 U CN202872443 U CN 202872443U
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Abstract
The utility model discloses a fuel-cell-based communication power supply, comprising a commercial-power supply loop, a fuel-cell power supply loop, a storage-battery power supply loop, a system control unit, a weak-current power supply unit and a man-machine interface. When the commercial power supply is normal, the system control unit starts the commercial power supply loop to supply power to a load, stops the fuel-cell power supply loop and charges a storage battery set. When the commercial power supply is in failure, the system control unit starts the storage-battery power supply loop to supply for the load, cuts off the commercial-power supply loop, starts a fuel-cell power generation system and switches to the fuel-cell power supply loop to supply for the load. The communication power supply provided by the utility model realizes seamless switching between the commercial-power supply loop and the fuel-cell power supply loop, ensures continuous power supply for the load in a switching process and provides power compensation for load abrupt change. The power supply system is clean, high-efficiency, reliable, and is suitable for various communication devices, and can stably provide electric power for the communication devices for a long time.
Description
Technical field:
The utility model relates to power supply, especially makes the field based on the communication of hydrogen fuel cell with power-supply system.
Background technology:
In recent years, along with becoming increasingly conspicuous of global energy shortage and environmental issue, the application study exploitation of new forms of energy has received the energetically concern of countries in the world, and the novel energy of therefore research and development cleaning, environmental protection is significant.Fuel cell is because efficient, clean, advantage easily, the great attention of countries in the world and energetically subsidy have been obtained in recent years, fuel cell technology based on Hydrogen Energy has also obtained fast development, existing a large amount of basic research and the research and development of application technology, and in the various fields application of succeeding, for good basis has been established in the application and development of fuel cell.
Along with the generally raising of social progress, living standards of the people and the fast development of the communication technology, communication power supply is widely used.Traditional communication generally comprises mains supply converting system and standby power system two large divisions with power-supply system, wherein the mains supply converting system is mainly exported afterwards by the conversion that civil power is correlated with and is fit to the DC power supply that communication equipment uses, standby power system provides the stand-by power supply of communication equipment operation when mains failure or fault, ensure the normal operation in the communication equipment short time.Traditional communication is generally adopted lead-acid batteries with standby power system in the power-supply system, the lead acid accumulator advantage is that relatively safety and purchase cost are lower, its shortcoming is that volume is large, heavy, useful life is short, can not carry out secondary recovery utilize, cause after discarded once with secondary environmental pollution, charging time is limited and uncertainty is arranged, ambient temperature is required harsh, it uses and popularization is very restricted.Traditional communication is two independently electric power systems with mains supply converting system and standby power system in the power-supply system in addition, between two systems without direct communication interface and administrative unit, need between to add watch-dog, coordinate both work, be not easy to administer and maintain, increase maintenance cost and the difficulty of system.
In view of the various shortcoming of traditional communication with power-supply system, the in addition raising of energy crisis and people's environmental consciousness is sought new communication more and more higher with the power-supply system cry.Because fuel cell is not limited by Carnot cycle, energy conversion efficiency is high, the cleaning, pollution-free, noise is low, specific power is high, be acknowledged as gradually and can replace storage battery as the stand-by power supply in the power supply system for communications, therefore research and development have wide application market based on the power supply system for communications of fuel cell.
A kind of standby electrical power system of fuel cell for communication has been proposed in the Chinese patent 200910061032.1, its outage judges it is to obtain by the detection to outside civil power, need to be in the different power loss detection means of the outside increase of system for different power consumption equipments, ease for use and versatility have certain deficiency; When outside civil power transient-power failure occurs or rises the stopping time frequently, system also can move thereupon accordingly.A kind of uninterrupted power supply electric power system based on fuel cell is disclosed in the Chinese patent 201110081524.4, this scheme is only as the ups power system, how to adjust its power supply when not considering load changing, auxiliary power supply is not managed, during without electricity or fault, the uninterrupted power supply electric power system can't be worked at auxiliary power supply.Chinese patent 200820157255.9 discloses a kind of standby power system for communication, this standby power system is connected afterwards by unilateral diode with energy-storage battery by fuel cell provides stand-by power supply for the communication load, the spread of voltage of in this system, exporting owing to fuel cell, has soft voltage characteristic, can not provide stable power supply for load, can only be as accessory power supply, and energy-storage battery is only main power source, does not realize that fuel cell is as the original intention of stand-by power supply.Chinese patent 200910187938.8 discloses a kind of fuel cell stand-by power supply, operation principle and system that fuel battery part has mainly been described by system consist of, do not describe the management of energy flow in the standby power system in detail, do not possess automatic decision mains-supplied situation, do not possess the automatic switchover powering mode yet.Some other published patented technology scheme, all be that fuel cell is replaced original storage battery as the stand-by power supply of power-supply system, do not consider from power-supply system integral body, need between standby power system and power-supply system, add corresponding detection control apparatus for different power consumption equipments, increase the complexity of system, also reduced stability and the reliability of power-supply system.
The utility model content
In view of the above deficiency of above prior art, the purpose of this utility model is a kind of power supply system for communications based on fuel cell of research, take hydrogen as fuel, provides stable, powerful direct current supply for communication equipment for a long time; System realizes that by internal state monitoring and automatically control uninterrupted power supply switches, and the Power supply of short time is provided for load by batteries in handoff procedure, and provides accessory power supply for fuel cell start-up and control unit.
The utility model is to realize by following means:
A kind of communication power supply based on fuel cell comprises mains-supplied loop 100, fuel cell-powered loop 200, storage battery power supply loop 300, system control unit 400, light current power supply unit 500 and man-machine interface; Wherein the output in mains-supplied loop 100, fuel cell-powered loop 200, storage battery power supply loop 300 is parallel to system's dc bus, for load provides electric power; System control unit 400 is the intelligent control unit of whole system, the fully automatic operation of control system; Light current power supply unit 500 provides light current for whole power-supply system; Man-machine interface provides the human-computer interaction functions such as demonstration, external communication interface for system;
System control unit 400 is connected with AC/DC control unit 130, charge in batteries administrative unit 320, fuel cell controller 220 and man-machine interface by the CAN bus, carries out the transmission of control command, parameter; System control unit 400 also is connected with DC/DC converter unit 230, DC/DC converter unit 240, electronic switch DK respectively by control signal wire;
Light current power supply unit 500 1 ends are connected with the system dc bus, and the other end is connected with DC/DC converter unit 230, DC/DC converter unit 240 and system control unit 400 respectively, and+5V ,+3.3V light current are provided respectively ± 15V.
Above-mentioned a few part consists of the overall structure framework of native system.By above technical scheme, a kind of power supply system for communications based on fuel cell of the utility model, can utilize hydrogen as main fuel, cooperate mains-supplied loop, storage battery power supply loop, consist of a complete power supply system for communications, the rated voltage that the communication standard regulation is satisfied in output is that DC48V, voltage range are the DC power supply of DC43.2V～DC57.6V.This power-supply system cleaning, efficient, reliable is fit to various communication equipments and uses, can be long-time, stable for communication equipment provides electric power, guarantee that communication equipment stablizes continued power.
The utility model compared with prior art has the following advantages:
1. the utility model utilizes the AC/DC control unit automatically to monitor the mains-supplied situation, realize the judgement of the actual power failure of civil power and civil power transient-power failure or frequent start-stop by internal control, do not need to increase the external monitoring device, ease for use and versatility are good, can be not frequently switched system current supply circuit back and forth.
2. the utlity model has the storage battery power supply loop, can not need externally fed to start operation, power back-off can be carried out in the storage battery loop simultaneously.When load changing because fuel cell output response is slower; in time responsive load sudden change; will cause dc bus voltage to descend and affect the normal operation of equipment; this moment, the storage battery power supply loop can be supported owing to load increases suddenly the power shortage that causes, the stable operation of protection fuel cell system.
3. the utlity model has high efficiency DC/DC unit 1; the unstable DC converting of fuel cell output can be become stable loading demand direct current; so that in fuel cell-powered loop the fuel cell-powered main supply electricity that becomes; and batteries is auxiliary power supply and power back-off; be conducive to protect batteries, prolong the useful life of storage battery.
4. the utlity model has the charge in batteries administrative unit, state that can the Real-Time Monitoring storage battery, the SOC value of prediction storage battery, with keep batteries SOC dynamic equilibrium in certain among a small circle in, dwindle the battery characteristics dispersion, prolong the useful life of storage battery.
5. the utlity model has system control unit, can realize that automatic monitoring, current supply circuit automatically switch, the management of storage battery automatic charging, and man-machine interface is provided.
6. the utility model is not a standby power system as an overall power system, has considered the coordination control of total system, has reduced complexity and the maintenance difficulties of system, has improved stability and the reliability of power-supply system.
Description of drawings
Fig. 1 is the power supply system for communications structured flowchart based on fuel cell.
Fig. 2 is the power-supply system workflow.
Fig. 3 is the efficiency curve in fuel cell-powered loop.
Fig. 4 is the efficiency curve in mains-supplied loop.
Embodiment
Below in conjunction with accompanying drawing structure of the present utility model is described in further detail.
System architecture diagram as shown in Figure 1, this power-supply system comprises mains-supplied loop 100, fuel cell-powered loop 200, storage battery power supply loop 300, system control unit 400, light current power supply unit 500 and man-machine interface.Wherein the output in mains-supplied loop 100, fuel cell-powered loop 200, storage battery power supply loop 300 is parallel to system's dc bus, for load provides electric power; System control unit 400 is the intelligent control unit of whole system, the fully automatic operation of control system; Light current power supply unit 500 provides light current for whole power-supply system.Man-machine interface provides the human-computer interaction functions such as demonstration, external communication interface for system.
Mains-supplied loop 100 comprises voltage detecting transducer, current detection sensor, Active Power Factor Correction APFC unit 110, isolation DC/DC converter unit 120 and the AC/DC control unit 130 that is connected successively.Civil power AC220V is connected with the input in mains-supplied loop 100 by K switch 2, then be connected with an input of Active Power Factor Correction APFC unit 110 behind a voltage detecting transducer in parallel, series connection one current detection sensor successively, the output of Active Power Factor Correction APFC unit 110 is connected with the input of isolation DC/DC converter unit 120, and the output of isolating DC/DC converter unit 120 is connected with the system dc bus; AC/DC control unit 130 is connected with Active Power Factor Correction APFC unit 110, isolation DC/DC converter unit 120 respectively by control signal wire, realization is to the control of Active Power Factor Correction APFC unit 110, isolation DC/DC converter unit 120, and be connected with system control unit 400 by the CAN bus, carry out the transmission of control command/parameter.
Storage battery power supply loop 300 comprises charge in batteries administrative unit 320, batteries 310, voltage detecting transducer, current detection sensor, electronic switch DK, surge protection resistance R and the heavy-duty diode that is connected successively.Be connected with the end of electronic switch DK behind an output of batteries 310 a voltage detecting transducer in parallel, series connection one current detection sensor, the other end of electronic switch DK is connected with an end of heavy-duty diode, and the other end of heavy-duty diode is connected with the system dc bus.One end of surge protection resistance R is connected with the input of electronic switch DK, the other end of surge protection resistance R is connected with K switch 1, the other end of K switch 1 is connected with the output of electronic switch DK, the control end of electronic switch DK is connected with system control unit 400, realizes gushing the automatic excision control of protective resistance R; Charge in batteries administrative unit 320 1 ends are connected with the system dc bus, and the other end is connected with batteries 310, realize the Charge Management to batteries 310.
Fuel cell-powered loop 200 comprises fuel cell controller 220, fuel cell generation 210, DC/DC converter unit 230, the DC/DC converter unit 240 that is connected successively.Wherein the output of fuel cell generation 210 successively a voltage detecting transducer in parallel, series connection one current detection sensor, series connection one fuse F1, series connection be connected with the input of DC/DC converter unit 230 behind one heavy-duty diode, the output of DC/DC converter unit 230 is connected with the system dc bus; The input of DC/DC converter unit 240 is connected with the system dc bus, the output of DC/DC converter unit 240 a successively voltage detecting transducer in parallel, series connection one current detection sensor, series connection is connected with fuel cell controller 220 behind the one fuse F2, for fuel cell controller 220 and fuel cell generation 210 provide accessory power supply; Fuel cell controller 220 is connected with fuel cell generation 210 by control line, realizes fuel cell power generation control; Fuel cell controller 220 is connected with system control unit 400 by the CAN bus, carries out the transmission of control command/parameter;
Light current power supply unit 500 1 ends are connected with the system dc bus, and the other end is connected with DC/DC converter unit 230, DC/DC converter unit 240 and system control unit 400 respectively, and being respectively them provides ± 15V ,+5V ,+3.3V light current.
System control unit 400 is connected with AC/DC control unit 130, charge in batteries administrative unit 320, fuel cell controller 220 and man-machine interface by the CAN bus, carries out the transmission of control command, parameter; System control unit 400 also is connected with DC/DC converter unit 230, DC/DC converter unit 240, electronic switch DK respectively by control signal wire, directly controls their operation.
System's dc bus is connected with an end of K switch 3 after exporting the protective tube F3 that connects successively, a voltage detecting transducer in parallel, series connection one current detection sensor, and the other end of K switch 3 directly is connected with traffic load.
The startup flow process of power-supply system as shown in Figure 2.After system's Installation and Debugging were finished, at first Closing Switch K1 provided the startup accessory power supply by batteries 310 to power-supply system; Behind the Closing Switch K1, the light current power supply unit 500 that is connected on system's dc bus begins to start, and output system needs ± 15V ,+5V, the light current such as+3.3V; At light current ± 15V ,+5V, after+3.3V power supply was normal, system control unit 400 started each controller of system control unit 400 at first initialization whole systems, the state parameter of each unit of detection system; Start DC/DC converter unit 230,240 work of DC/DC converter unit; After DC/DC converter unit 240 starts, provide accessory power supply, the starting fluid battery system for fuel cell controller 220; Closing Switch K2 subsequently, with the mains-supplied loop 100 of civil power AC220V access power-supply system, system control unit 400 just enters the fully automatic working pattern.Last Closing Switch K3 connects the communication equipment load, externally output power.
System control unit 400 constantly detects the mains-supplied situation, when detecting mains-supplied when normal, system control unit 400 starts the 100 pairs of load supplyings in mains-supplied loop, stop 200 work of fuel cell-powered loop, under 320 controls of charge in batteries administrative unit, batteries 310 is charged simultaneously; When detecting mains-supplied power failure or fault, 300 pairs of loads of system control unit 400 starting storage battery current supply circuits are powered temporarily, cut off mains-supplied loop 100, starting fluid battery generating system 210 begins generating, switch to 200 power supplies of fuel cell-powered loop after fuel cell generation 210 sends stabilized power supply, storage battery power supply loop 300 is current supply circuit by way of compensation; When system control unit 400 when detecting civil power for loop 100, fuel cell-powered loop 200 equal fault; by 310 pairs of load supplyings of batteries; and produce warning message and be uploaded to man-machine interface, when batteries 310 voltages are lower than the protection threshold value, automatically cut off load.
Claims (4)
1. the communication power supply based on fuel cell comprises mains-supplied loop (100), fuel cell-powered loop (200), storage battery power supply loop (300), system control unit (400), light current power supply unit (500) and man-machine interface; Wherein the output in mains-supplied loop, fuel cell-powered loop, storage battery power supply loop is parallel to dc bus, for load provides electric power; System control unit is the intelligent control unit of whole power supply, the fully automatic operation of control system; The light current power supply unit provides light current for whole power-supply system; Man-machine interface provides demonstration, external communication interface human-computer interaction function for system;
System control unit (400) is connected with AC/DC control unit (130), charge in batteries administrative unit (320), fuel cell controller (220) and man-machine interface by the CAN bus, carries out the transmission of control command, parameter; System control unit (400) also is connected with DC/DC converter unit (230), DC/DC converter unit (240), electronic switch DK respectively by control signal wire;
Light current power supply unit (500) one ends are connected with the system dc bus, the other end is connected with DC/DC converter unit (230), DC/DC converter unit (240) and system control unit (400) respectively, + 5V ,+3.3V light current are provided respectively ± 15V.
2. the described communication power supply based on fuel cell according to claim 1, it is characterized in that, described fuel cell-powered loop (200) comprises fuel cell controller (220), fuel cell generation (210), DC/DC converter unit (230), the DC/DC converter unit (240) that is connected successively.
3. the described communication power supply based on fuel cell according to claim 1; it is characterized in that, described storage battery power supply loop (300) comprises charge in batteries administrative unit (320), batteries (310), voltage detecting transducer, current detection sensor, electronic switch DK, surge protection resistance R and the heavy-duty diode that is connected successively.
4. the described communication power supply based on fuel cell according to claim 1, it is characterized in that, described mains-supplied loop (100) comprises voltage detecting transducer, current detection sensor, Active Power Factor Correction APFC unit (110), isolation DC/DC converter unit (120) and the AC/DC control unit (130) that is connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220434831 CN202872443U (en) | 2012-08-30 | 2012-08-30 | Fuel-cell-based communication power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220434831 CN202872443U (en) | 2012-08-30 | 2012-08-30 | Fuel-cell-based communication power supply |
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| CN202872443U true CN202872443U (en) | 2013-04-10 |
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| CN 201220434831 Expired - Fee Related CN202872443U (en) | 2012-08-30 | 2012-08-30 | Fuel-cell-based communication power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647342A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Novel uninterrupted power supply method and uninterrupted power source system |
| CN103647341A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Uninterrupted power supply method and uninterrupted power source system |
| CN104681829A (en) * | 2013-12-02 | 2015-06-03 | 陕西荣基实业有限公司 | Hydrogen fuel cell for communication base station |
-
2012
- 2012-08-30 CN CN 201220434831 patent/CN202872443U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681829A (en) * | 2013-12-02 | 2015-06-03 | 陕西荣基实业有限公司 | Hydrogen fuel cell for communication base station |
| CN103647342A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Novel uninterrupted power supply method and uninterrupted power source system |
| CN103647341A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Uninterrupted power supply method and uninterrupted power source system |
| CN103647341B (en) * | 2013-12-15 | 2015-12-09 | 中国科学院工程热物理研究所 | A kind of free of discontinuities method of supplying power to and power-supply system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20150830 |
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| EXPY | Termination of patent right or utility model |