JPH1132432A - Power supply - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple generating power supply to be driven by manpower in an emergency case, where no commercial power is available even though optical fibers are linked in an optical fiber communication terminal. SOLUTION: A hand (or foot) DC motor-generator 1, connected to an electric double layer capacitor 2 and a load (power supply of a terminal) in series, is driven for a while, and then its rotating shaft is locked. Once electric charge has been stored in the electric double layer capacitor 2 since the start of the motor-generator 1 and the rotation of the motor-generator 1 is locked, the electric double layer capacitor 2 discharges the stored electric charge. In this way, a power supply is can be obtained which allows communication for a few minutes, after the stop of the rotation if the rotation is stopped after being driven for about a minute.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply which is mainly driven by human power or by simple mechanical driving means when a commercial power supply is interrupted. It is used as an emergency power supply to secure the power. Although the present invention has been developed as a power supply device for a communication device, it can be widely used as a power supply device for other uses. The present invention relates to a new electric double layer capacitor application technique. 2. Description of the Related Art It is anticipated that optical fiber communication systems will become widespread and optical fiber communication terminals will be installed in general user homes in the near future. In the optical fiber communication system, only the optical fiber is connected between the station device and the communication terminal device, and in principle, the metal wire pair is not connected. The required minimum power supply current cannot be supplied to the terminal device. In general, in the optical fiber communication system, an advanced electronic device for processing a high-speed digital communication signal is provided in a communication terminal device. In order to operate such an electronic device, a commercial power supply (AC 100 V, 60 in Japan) is used.
Or a power supply circuit for obtaining a necessary power supply current from 50 Hz. [0003] In such an apparatus, it is expected that the commercial power supply is stopped and communication becomes impossible when there is no failure in the communication line at the time of emergency or the like. To this end, it is a conventionally known technique to provide a battery power supply or a generator as a backup power supply device for the communication terminal device. On the other hand, an electric double layer capacitor having a small size and a large capacitance has been developed. In this method, an electric double layer is formed using a solid activated carbon electrode, and a larger capacitance is realized by making the equivalent area of the electrode extremely large. Moreover, the series resistance component of the electric double layer capacitor can be extremely reduced by selecting the electrolyte. The structure, operating principle and manufacturing method are described in, for example, Japanese Patent Publication No. Hei 7-91449, Japanese Patent Laid-Open Publication No. Hei 7-201677, Saito et al., "Development of High Power Electric Double Layer Capacitors", NEC Technical Report, Vol. Ten
Pp. 91-96, Saito et al., "High Power Capacitors Using Solid Activated Carbon Electrodes," New Ceramics, Vol. 9, No. 12 (19
(December 96), pages 21 to 25. An example of an electric double layer capacitor prototyped by the inventors of the present application and already announced is a 15 V, 470 F (Farad), an equivalent series resistance of 4 mΩ, and a maximum discharge current of 600 A. This can store about 15 Wh (watt-hour) of power when charged to the maximum terminal voltage. [0005] As an emergency power supply for a communication device, there are techniques such as the use of a battery and the use of a small generator as described above. A dry battery that is small and easy to use as a battery power source will deteriorate over time without using it.Therefore, regular maintenance such as replacement of batteries in a backup power supply is necessary. Sometimes useless. It is well known that a power supply using a large lead-acid battery requires facilities such as a special room, and maintenance and operation thereof require special technology. The generator, such as an internal combustion engine that drives the generator, tends to be large, and involves troublesome work such as long-term maintenance in normal times and periodic test runs. In addition, human-powered communication power generators have long been used for military purposes, etc. as simple devices, but they are suitable for general users to use because they must keep rotating for the entire time of communication. It is not a simple device. The inventors of the present application focused on using the electric double-layer capacitor for an emergency power supply device of a communication device and conducted various tests to arrive at the present invention. The present invention is an application of an electric double layer capacitor to a communication power supply device. That is, the electric double-layer capacitor is characterized in that it is small in size, can obtain a very large capacitance, and has a very small internal resistance. Therefore, by generating electricity for a short period of time by a manual generator such as a manual one and storing the resulting electrical energy in the electric double layer capacitor, the electrical energy can be used for a long time even after the generator is stopped. Thought that they could communicate. That is, according to the present invention, as described above, unlike a communication terminal device of an optical fiber communication system, there is no connection by a metal wire to a station device, and a minimum necessary power supply current is supplied from the station device. An object of the present invention is to provide an emergency power supply device suitable for a communication terminal device that cannot transmit. The present invention
An object of the present invention is to provide a communication power supply device for coping with an emergency in which a commercial power supply cannot be used even though a communication line is normal by an optical fiber communication system. An object of the present invention is to provide a power supply device that is also suitable as a power supply device for an isolated wireless communication device. According to the present invention, electric energy generated by rotationally driving the generator by manual power such as stepping can be used for a long time not only during the period when the generator is rotationally driven but also after the rotational drive is stopped. It is an object to provide a power supply device.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a power supply device of a communication device which does not require replacement of components without exhaustion of components such as a dry battery. An object of the present invention is to provide a power supply device of a communication device that does not require maintenance work such as management of an electrolyte and charging operation unlike a storage battery. An object of the present invention is to provide a power supply device of a communication device having a small shape. SUMMARY OF THE INVENTION The present invention provides a power supply device comprising a combination of a DC generator and an electric double layer capacitor, and comprises a DC generator (two terminals), an electric double layer capacitor, (Two terminals) and a DC input terminal (two terminals) of the DC power supply circuit are connected in series. The DC generator used here is a DC motor generator, the directions of currents when operating as a motor and when operating as a generator are opposite, and when operating as a motor and as a generator. It is preferable to use a rotating shaft having the same rotation direction when operating. That is, the DC generator or the DC motor generator having this structure has a simple structure and does not require a separate power supply such as a field power supply. In the DC motor generator having this structure, when the rotating shaft is driven by an external force, a DC current is generated at terminals (two terminals). When a current is externally applied to these terminals, that is, when the motor operates as a motor. When the rotation of the rotating shaft is mechanically and forcibly stopped at this time, the terminals are electrically short-circuited. Therefore, when the DC generator (two terminals), the electric double layer capacitor (two terminals), and the DC input terminal (two terminals) of the DC power supply circuit serving as a load are connected in series, the rotation of the DC generator By locking the shaft by mechanical means, the DC generator is short-circuited, and the electric double layer capacitor (two terminals) and the DC input terminal (two terminals) are electrically connected directly. In this state, the electric charge accumulated in the electric double layer capacitor is supplied to the DC input terminals (two terminals) of the DC power supply circuit. The mechanical means for forcibly stopping the rotation of the rotating shaft includes, for example, a handle for rotating the generator,
Mechanism means for locking the rotation of the pedal and other rotating mechanisms by means of fixed pins and the like. A motor generator, an electric double layer capacitor,
With the DC input terminal of the DC power supply circuit connected in series,
When a certain amount of electric charge is accumulated in the electric double-layer capacitor when electric power is generated by the motor-generator and the rotating shaft of the motor-generator is mechanically locked, current flows from the electric double-layer capacitor to the DC input terminal of the DC power circuit. Flows, but the current direction at that time is reversed. Therefore, in this structure, a circuit in which a polarity inversion circuit whose polarity is inverted between the time of charging and the time of discharging of the electric double layer capacitor is suitably connected to the DC input terminal of the DC power supply circuit. This polarity reversing circuit can be a double pole double throw switch or a semiconductor rectifier circuit. Further, a DC input terminal of the DC power supply circuit
By connecting a constant voltage circuit (for example, a Zener diode), when an excessive current exceeding the current required for the DC power supply circuit is generated by the generator, the excess current bypasses the constant voltage circuit and the electric power is generated. The multilayer capacitor will be charged. When a constant current circuit is connected to the DC input terminal of the DC power supply circuit, when the electric energy stored in the electric double layer capacitor is released, an excessive current is generated at the initial stage when the stored electric charge is large. Supply to the circuit can be avoided. The present invention can be implemented by connecting an electric double layer capacitor in parallel to a DC input terminal of a DC power supply circuit. That is, the present invention includes a DC generator, and an electric double-layer capacitor connected via a rectifying element connected to a direction in which the generated current is conducted to an output current terminal of the DC generator. And a DC input terminal of a DC power supply circuit is connected in parallel with the terminal. With this configuration, it is preferable to connect a constant current circuit to the DC input terminal of the DC power supply circuit for use. Thus, when the electric energy stored in the electric double-layer capacitor is released, it is possible to prevent an excessive current from being supplied to the DC power supply circuit at the initial stage when the stored electric charge is large. The above-described power supply device of the present invention can be used as an emergency device for supplying a power supply current required for communication when commercial power is cut off, provided in a terminal device of an optical fiber communication device. FIG. 1 is a basic circuit configuration diagram showing an embodiment of the present invention. That is, a DC generator (motor generator 1 in the embodiment) and an electric double layer capacitor 2
And a DC input terminal 3, 3 of the DC power supply circuit are connected in series. The resistance R is a DC load resistance of the DC power supply circuit. This DC generator is a DC motor generator 1, the current direction when the motor generator 1 operates as a motor is an arrow M, and the current direction when the motor generator 1 operates as a generator is an arrow G, The directions are opposite to each other. The motor generator 1 has the same rotation direction of the rotating shaft when operating as a motor and when operating as a generator. That is, as shown in FIG. 2, when the motor generator 1 and the electric double layer capacitor 2 are directly connected by a pair of conductors, when a rotating force is applied to the rotating shaft of the motor generator 1 from the outside to generate electricity, The electric double layer capacitor 2 is charged by the generated direct current (arrow G). Its polarity (+-) is as shown in FIG. Then, when the charging is properly performed, if the rotating force applied from the outside is stopped and the rotating shaft is freed, for example, if the hand is released while the handle is being turned by hand, the electric double layer capacitor 2 is charged. Is discharged, a current flows in the motor generator 1 in the direction of arrow M, and the motor generator 1 rotates as a motor. The direction of rotation of the rotating shaft is the same as the direction of rotation when operating as a generator. This configuration was filed as a separate application filed by the same inventor (Japanese Patent Application No. 9-112699, unpublished at the time of filing the present application). In the configuration shown in FIG. 1, the rotating shaft of the motor generator 1 is rotationally driven to operate as a generator, and the electric double layer capacitor 2 is charged while supplying current to the load R of the power supply circuit. At this time, the current direction is indicated by arrow G. The polarity (+-) of the electric double layer capacitor 2 is as shown in FIG.
Then, after the electric double layer capacitor 2 is appropriately charged, when the rotation of the rotating shaft of the motor generator 1 is stopped, discharging starts from the electric double layer capacitor 2 and the motor generator 1 becomes a motor and the rotating shaft is Rotates. The current direction at that time is indicated by an arrow M according to the polarity of the electric double layer capacitor 2. Therefore, the current flowing through the load R of the power supply circuit is reversed between charging and discharging. For this purpose, a polarity inversion circuit is required for the DC input terminals 3 of the power supply circuit. Further, after the electric double layer capacitor 2 is appropriately charged in the configuration shown in FIG. 1, the motor generator 1 is operated as a motor, and while the electric current M is being discharged, the motor generator 1
Forcibly mechanically lock the rotating shaft. Then, an infinite load was imposed on the motor generator 1, the resistance between both terminals of the motor generator 1 became almost zero, and the terminals were apparently electrically short-circuited. become. In this state, the electric charge charged in the electric double layer capacitor 2 becomes a current, flows to the load R and is consumed. As the means for mechanically locking, a means for locking the handle attached to the rotating shaft of the motor generator 1 so that it cannot be rotated by a projection, a pin, a hook or the like is suitable. The motor generator 1 can be easily driven and rotated manually, by a foot pedal, by other human power, or by a simple internal combustion engine.
The device of the present invention can generate power for an appropriate time when starting to use, and can supply power current for a long time by using the electric energy charged in the electric double layer capacitor even after the power generation is stopped. it can. According to experimental studies by the inventors, when an apparatus is prototyped and power is generated by hand, an emergency power supply apparatus that performs communication for 5 to 10 times as long as the generator is running Is obtained. For example, when power is manually generated for about one minute, the power supply current is started from the start of the power generation, and even if the power generation is stopped, the power supply current is supplied to the optical fiber terminal device for about 10 minutes thereafter to perform communication. Can design a device that can To explain the contents of this test, FIG. 3 is a perspective view showing a mechanism of a prototype motor generator according to the present invention. FIG. 4 is an explanatory view of the mechanism of the motor generator of the embodiment, and FIG. 5 is a plan view of the motor generator of the embodiment. This device is arranged on a suitable table so that the handle 4 can be rotated by a human hand. A handle gear 5 rotates coaxially with the handle 4, and a flywheel gear 6 is attached to the handle gear 5. And the drive gear 8 meshes. The flywheel 7 is rotated by the flywheel gear 6. The motor generator 1 is rotationally driven by the drive gear 8.
In FIG. 3, the terminal of the motor generator 1 is connected to the terminal 2a of the electric double layer capacitor 2. That is, the electrical connection is made as shown in FIG. 2, and the standard value of the electric double layer capacitor 2 is a withstand voltage of 12 V (volt), 8 F (farad)
It is. FIG. 6 is a characteristic diagram showing the results of a test performed using this prototype device. FIG. 6 shows the result of measuring the voltage and current characteristics of the electric double layer capacitor 2 connected as shown in FIG. FIG. 6A shows time on the horizontal axis and current on the vertical axis, and FIG. 6B shows time on the horizontal axis and voltage on the vertical axis. That is, when the power is generated by turning the handle of the motor generator 1 by hand at time “0”, a generated current is generated as shown by an arrow G in FIG. 2 and the generated current is charged in the electric double layer capacitor 2 as electric charge. Is done. As the charge is accumulated and the terminal voltage of the electric double layer capacitor 2 gradually increases, the current flowing into the electric double layer capacitor 2 gradually decreases. When approximately 30 seconds have elapsed, it is assumed that the electric double layer capacitor 2 has been fully charged, and the hand of the motor generator 1 is released. Then, the current flows in the direction indicated by the arrow M in FIG. 2, and the motor generator 1 rotates as a motor. This is the state displayed as “Left” in FIG. When approximately 90 seconds have elapsed, the handle of the motor generator 1 is locked with a pin to forcibly disable rotation. In this state, both terminals of the motor generator 1 are short-circuited, and a large current flows in a direction indicated by an arrow M in FIG. This current is generated by discharging the electric charge stored in the electric double layer capacitor 2 at a stroke, and the energy generated by this current is consumed by the internal resistance of the motor generator 1, and the current is gradually reduced. In addition, the terminal voltage of the electric double layer capacitor 2 gradually decreases. When the discharge is completed, this current becomes zero, and the terminal voltage becomes zero. When the test result shown in FIG. 6 is read, it means that the current flows from 6 A to 2 A while changing from time 0 to about 30 seconds. Expressing this as a linear function, the current I is I = (4/30) t + 6. When this current I is integrated from t = 0 seconds to 30 seconds, the integrated value becomes 240 C (coulomb). If the minimum terminal voltage that can be supplied as a power supply is 5 V, that is, if the terminal voltage of the electric double layer capacitor 2 falls below 5 V, it is assumed that the terminal voltage becomes too low and cannot be used, and 5 (V) × 8 ( F) = 40 (C) remains in the electric double layer capacitor 2 as an unusable charge. Therefore, a charge of 240-40 = 200 C (coulomb) can be used. Assuming that a constant current of 500 mA is supplied to the optical fiber terminal as a power supply current, about 4
It can be seen that the power supply current can be supplied for 00 seconds. That is, when this test result is simply evaluated, when power is manually generated for only about 30 seconds, about 400 seconds (6
Over 40 minutes). The required value of the power supply current differs depending on the terminal device, and if it is designed by connecting the capacitances of a plurality of electric double-layer capacitors in parallel according to this value, the power is manually turned for about one minute to generate power. An emergency power supply device capable of performing communication for the next approximately 10 minutes can be realized. FIG. 7 is a block diagram of a device according to a first embodiment of the present invention. Communication terminal device 1 where optical fiber 11 is terminated
2 is provided with a power supply circuit 13 for supplying a power supply current. The communication terminal device 12 includes an interface for connecting the optical fiber 11, a communication modem, a transmission / reception device for transmitting and receiving high-speed digital communication signals, a computer device for storing and processing received digital data and digital data to be transmitted, Includes operation key board and others. The power supply circuit 13 uses a commercial power supply (100 V AC) from the terminal 14 in normal times, and the power supply device of the present invention is connected to the DC input terminal 3 in an emergency when the commercial power supply cannot be used. The DC input terminal 3 has a polarity reversing circuit 1 for reversing the polarity when the electric double layer capacitor 2 is charged and discharged.
0 is connected. This polarity inversion circuit is a double pole double throw switch. The operation of the first embodiment shown in FIG. 7 will be described. When the commercial power becomes unavailable, a DC current is supplied from the power supply of the present invention connected to the terminal 3. At this time, the switch of the polarity reversing circuit 10 is first turned to the left in the figure, and the motor generator 1 is driven to rotate manually. The generated current in the direction of arrow G is supplied to the DC input terminal 3 while charging the electric double layer capacitor 2, and the power supply circuit 13 is ready for use.
Power is supplied to the communication terminal device 12, and communication can be continued. For example, the motor generator 1 is turned on for about 5 to 10 minutes.
After being driven to rotate by human power, the switch of the polarity reversing circuit 10 is switched to the right to mechanically lock the rotating shaft of the motor generator 1. Thereby, the motor generator 1 becomes a motor, and the electric charge charged in the electric double layer capacitor 2 is discharged as a current in the direction of the arrow M. Motor generator 1
Since the motor cannot rotate, the impedance between the two terminals is substantially zero, and the current flowing from the electric double layer capacitor 2 is supplied to the DC input terminal 3 to operate the power supply circuit 13. The current generated from the power supply circuit 13 is supplied to the communication terminal device 12 and used. FIG. 8 is a block diagram of a device according to a second embodiment of the present invention. This figure is the same as the apparatus of the first embodiment described with reference to FIG. This example is an example in which a rectifier circuit using a diode is used for the polarity inversion circuit 10. Due to the operation of the rectifier circuit, when the direction of the current is the arrow G, that is, the motor generator 1
Also operates as a generator, and when the direction of the current is as indicated by the arrow M, that is, when the motor generator 1 operates as a motor, a current in a fixed direction is supplied to the DC input terminal 3. FIG. 9 is a block diagram of a device according to a third embodiment of the present invention. This example shows that the constant voltage circuit 16 is connected between both ends of the DC input terminal 3. The motor generator, the electric double layer capacitor, and the polarity reversing circuit are the same as those shown in FIG. 7 or FIG. The constant voltage circuit 16 is actually a Zener diode. The voltage of the DC input terminal 3 is kept constant by the constant voltage circuit 16 without being changed by the rotation speed of the motor generator (not shown). When the zener diode is turned on, the voltage of the motor generator is reduced. The generated current is shunted to the Zener diode and the power supply circuit 13, and the excess current is charged to the electric double layer capacitor 2. FIG. 10 is a block diagram of a device according to a fourth embodiment of the present invention. In this example, in addition to the circuit configuration shown in FIG.
Is inserted. By the operation of the constant current circuit 17, a stable current is supplied to the power supply circuit 13 over a wide range of the rotation speed of the motor generator (not shown), that is, from a very low speed state to a very high speed state. . FIG. 11 is a block diagram showing the arrangement of a fifth embodiment of the present invention. This configuration is a circuit for supplying a power supply current to a communication terminal device 12 accommodating an optical fiber 11, and a power supply circuit 13 is a commercial power supply terminal 1 used in normal times.
4 and a DC input terminal 3 used in an emergency.
The electric double layer capacitor 2 is connected in parallel to the DC input terminal 3, and a charging current is supplied to the electric double layer capacitor 2 from the DC generator 1 via the rectifier 21. When the rotation of the DC generator 1 is stopped, the rectifier 21 is turned off, and the current charged in the electric double layer capacitor 2 is supplied to the DC input terminal 3. FIG. 12 is a block diagram of a device according to a sixth embodiment of the present invention. In this configuration, a constant current circuit 17 is inserted into the circuit shown in FIG. By the operation of the constant current circuit 17, even if the terminal voltage of the electric double layer capacitor 2 fluctuates, the current supplied to the power supply circuit 13 can be kept constant. Although the configuration shown in FIG. 12 is simple, it is a device useful as an emergency power supply for a communication terminal device for optical fiber. The emergency power supply device of the optical fiber communication terminal device shown in FIGS. 7 to 12 rotates the motor generator 1 manually to charge the electric double layer capacitor 2 when starting communication. While stopping the rotation of the motor generator 1,
In addition, when charging is performed intermittently, such as when the motor generator 1 is manually rotated when the charge amount of the electric double layer capacitor 2 becomes insufficient, communication can be engaged for an extremely long time. As described above, according to the present invention, it is possible to provide an emergency power supply device for easily supplying a DC power supply current to a power supply circuit in which a commercial power supply cannot be used. The power supply device of the present invention can be driven simply, for example, by human power. Moreover, since the electric double layer capacitor is used in the device of the present invention, it is not necessary to drive the generator for a period during which communication is continued. Communication can be continued for minutes. Therefore, it can be easily used as an emergency power supply device. Since the device of the present invention utilizes an electric double layer capacitor, it does not require periodic maintenance and does not require frequent replacement of parts.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram for explaining the principle of the present invention. FIG. 2 is a circuit diagram illustrating the principle of the present invention. FIG. 3 is a perspective view illustrating the structure of the motor generator according to the embodiment of the present invention. FIG. 4 is a partially broken side view illustrating the structure of the motor generator according to the embodiment of the present invention. FIG. 5 is a plan view illustrating the structure of the motor generator according to the embodiment of the present invention. FIG. 5 is a diagram illustrating characteristics of the power supply device according to the embodiment of the present invention. FIG. 7 is a circuit block diagram of a first embodiment of the present invention. FIG. 8 is a circuit block diagram of a second embodiment of the present invention. FIG. 9 is a circuit block diagram of a third embodiment of the present invention. FIG. 10 is a circuit block diagram of a fourth embodiment of the present invention. FIG. 11 is a circuit block diagram of a fifth embodiment of the present invention. FIG. 12 is a circuit block diagram of a sixth embodiment of the present invention. [Description of Signs] 1 Motor generator 2 Electric double layer capacitor 3 DC input terminal 4 Handle 5 Handle gear 6 Flywheel gear 7 Flywheel 8 Drive gear 10 Polarity inversion circuit 11 Optical fiber 12 Communication terminal device 13 Power supply circuit 14 Terminal for connecting commercial power supply 16 Constant voltage circuit (Zener diode) 17 Constant current circuit 21 Rectifier

────────────────────────────────────────────────── ───
[Procedure amendment] [Submission date] August 12, 1997 [Procedure amendment 1] [Document name to be amended] Description [Item name to be amended] Brief explanation of drawings [Amendment method] Change [Amendment content] [ BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram for explaining the principle of the present invention. FIG. 2 is a circuit diagram illustrating the principle of the present invention. FIG. 3 is a perspective view illustrating the structure of the motor generator according to the embodiment of the present invention. FIG. 4 is a partially broken side view illustrating the structure of the motor generator according to the embodiment of the present invention. FIG. 5 is a plan view illustrating the structure of the motor generator according to the embodiment of the present invention. FIG. 6 is a diagram illustrating characteristics of the power supply device according to the embodiment of the present invention. FIG. 7 is a circuit block diagram of a first embodiment of the present invention. FIG. 8 is a circuit block diagram of a second embodiment of the present invention. FIG. 9 is a circuit block diagram of a third embodiment of the present invention. FIG. 10 is a circuit block diagram of a fourth embodiment of the present invention. FIG. 11 is a circuit block diagram of a fifth embodiment of the present invention. FIG. 12 is a circuit block diagram of a sixth embodiment of the present invention. [Description of Signs] 1 Motor generator 2 Electric double layer capacitor 3 DC input terminal 4 Handle 5 Handle gear 6 Flywheel gear 7 Flywheel 8 Drive gear 10 Polarity inversion circuit 11 Optical fiber 12 Communication terminal device 13 Power supply circuit 14 Terminal for connecting commercial power supply 16 Constant voltage circuit (Zener diode) 17 Constant current circuit 21 Rectifier

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H02J 9/06 505 H01G 9/00 301Z

Claims (1)

Claims 1. A power supply device, comprising: a DC generator, an electric double layer capacitor, and a DC input terminal of a DC power supply circuit connected in series. 2. The DC generator is a DC motor generator, the current directions when operating as a motor and when operating as a generator are opposite, and when operating as a motor, it operates as a generator. 2. The power supply according to claim 1, wherein the rotation directions of the rotating shafts are the same. 3. The power supply device according to claim 2, further comprising mechanical means for forcibly stopping the rotation of the rotating shaft. 4. The power supply device according to claim 2, wherein a polarity inversion circuit that inverts the polarity when charging and discharging the electric double layer capacitor is connected to a DC input terminal of the DC power supply circuit. 5. The power supply device according to claim 4, wherein the polarity inversion circuit is a double-pole double-throw switch. 7. The power supply device according to claim 4, wherein the polarity inversion circuit is a semiconductor rectification circuit. 8. The power supply device according to claim 4, wherein a constant voltage circuit is connected to a DC input terminal of the DC power supply circuit. 9. The power supply device according to claim 4, wherein a constant current circuit is connected to a DC input terminal of the DC power supply circuit. 10. An optical fiber equipped with the power supply device according to claim 4 as an emergency device for supplying a power supply current required for communication when commercial power is cut off. Terminal device for communication device. 11. A direct-current generator, and an electric double-layer capacitor connected to an output current terminal of the direct-current generator via a rectifying element connected in a direction for conducting a generated current,
A power supply device, wherein a DC input terminal of a DC power supply circuit is connected in parallel to a terminal of the electric double layer capacitor. 12. A DC input terminal of the DC power supply circuit,
The power supply device according to claim 11, wherein a constant current circuit is connected. 13. A terminal for an optical fiber communication device, comprising the power supply device according to claim 11 or 12 as an emergency device for supplying a power supply current required for communication when commercial power supply is cut off. apparatus.