JP2008035589A - Power feeding method and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power feeding device which can maintain the feed of a required amount of electric energy to an electric load for a long period of time on the basis of electric energy which has been possessed by the device from an initial stage without newly taking in electric energy from the outside. <P>SOLUTION: The power feeding device (A) comprises a DC motor (1) connected in series to the device, a power supply (3), and a DC generator (2). The power supply (3) comprises batteries (30, 31) of plurality of systems which are arranged in parallel with each other, and is arranged between terminals of the DC generator (2) and the DC motor (1). The power supply comprises a changeover switch (5) which switches an energizing battery out of the batteries (30, 31) at each prescribed time, each of the switches (30, 31) is chargeable and has such a characteristic that performance is recovered when discharging is stopped, the DC generator (2) is driven by the DC motor (1) with the motor as a drive source, and the electric energy generated at the DC generator (2) is used for charging the power supply (3), also used for driving the DC motor (1), and used for feeding power to the electric load (8). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power feeding method and apparatus. More specifically, the present invention relates to an apparatus capable of maintaining a supply of a required amount of electric energy to an electric load for a long time or a long period of time based on the electric energy that has been originally provided without newly taking in electric energy from the outside.

A rechargeable DC power source is used as a power source for enabling an emergency power source, various portable devices, and the like to be used without depending on a commercial power source.
The DC power source must be charged before use. In addition, since the electric capacity is also determined, it is consumed when connected to an electric load and cannot function as a power source. That is, the DC power source cannot be used as a power source while it is charged, and the labor for charging is troublesome and inefficient.

  Furthermore, when charging a direct current power source, in order to store predetermined electrical energy, several times or more electrical energy is required, which is also very inefficient. In order to improve such waste, an apparatus for supplying electric energy described in Patent Document 1, for example, has been proposed.

The apparatus described in Patent Document 1 includes a discharge switching unit that connects or disconnects a plurality of DC power sources and an electrical load, and a charge switching unit that connects or disconnects a plurality of DC power sources via a charging device. And a control means for controlling them, and in order to supply electric energy to the electric load, an arbitrary DC power source is connected to the electric load, and at the same time, partly discharged, and after a predetermined time, the DC power source and the load Is a device that repeats the operation of cutting off the connection between the two and charging the unconnected DC power supply via the charging device.
According to the apparatus for supplying electric energy, the useful life of the DC power supply can be extended without increasing the capacity of the DC power supply and the volume and mass of the DC power supply associated therewith.

11-510679

The apparatus described in Patent Document 1 has the following problems.
In other words, the DC power supply is restored from the other DC power supply, so that the amount of stored electricity is somewhat recovered. As a result, the life is slightly extended as compared with the case where the DC power supply is simply used. However, there is no means for newly generating electrical energy in the circuit, and the electrical energy stored in the circuit is still decreasing. Therefore, it cannot be said that the device described in Patent Document 1 can supply electric energy over a sufficiently long period under various conditions.

  Accordingly, an object of the present invention is to maintain the supply of a required amount of electric energy to an electric load based on the electric energy that has been present from the beginning without taking in new electric energy from the outside for a longer period of time than before. It is to provide a power feeding method and apparatus.

  Means taken by the present invention to solve the above problems are as follows.

  The present invention electrically connects a DC generator, a DC motor, and a power supply unit having a plurality of batteries arranged in parallel to each other in series, and each battery can be charged and performance is restored when discharging stops. The DC motor is driven by the DC motor, and the electric energy generated by the DC generator is charged with the battery of the power supply unit or supplemented with electric energy, the driving of the DC motor and the electric power. This is a power feeding method that is used for power feeding to a load and switches a battery to be energized among the power supply units at every required time.

  The present invention includes a DC generator that supplies power, a DC motor that drives the DC generator, a plurality of systems of batteries that are provided in parallel, a power supply unit that supplies power to the DC motor, Switching means for switching a battery to be energized every required time, and the DC generator, the DC motor, and the power supply unit are electrically connected in series, and the battery can be charged and the performance stops when the discharge stops. The electric energy generated by the DC generator is used for charging the battery of the power supply unit or replenishing the electric energy, driving the DC motor and supplying power to the electric load. It is a power feeding device.

  In the power supply device according to the present invention, it is more preferable to employ a low voltage, high rotation type DC motor as compared to a DC generator.

  A power supply device according to the present invention includes a spinning wheel provided on a rotating shaft of a DC motor or a rotating shaft of a DC generator, and means for converting the rotational energy of the spinning wheel into electric energy. More preferably, the power supply unit is used for charging a battery or replenishing electric energy, driving a DC motor or supplying power to an electric load.

  The term “battery performance is restored” as used in the present specification and claims is not limited to the meaning that the battery performance is completely restored to the original performance. For example, the performance tends to recover slightly or slightly better. Including meaning. In addition, it can be paraphrased that the performance of a battery recovers or improves when the storage capacity of the battery increases.

The DC motor is generally a commutator motor, but is not limited thereto.
The battery is not particularly limited as long as it has a characteristic that can be charged and performance is restored when the discharge stops. For example, a primary battery such as an alkaline battery or an oxyride battery, a nickel cadmium rechargeable battery, or a nickel hydrogen rechargeable battery. Secondary batteries such as batteries can be employed.
In addition, when charging when a primary battery is used as the battery, it is preferable to monitor the voltage of the primary battery during operation to prevent overcharging. In order to realize this, a protection device using a voltage detection circuit or the like can be adopted.

The DC generator is generally a commutator generator, but is not limited thereto.
Examples of the switching means include, but are not limited to, a switch that can automatically switch a switch every required time. Examples of the type of switch include, but are not limited to, a semiconductor switch such as a thyristor and a transistor in addition to a switch having a mechanical operation part such as a relay.

(Function)
The effect | action of the electric power feeder which concerns on this invention is demonstrated. Here, the constituent elements used in the description are assigned in correspondence with the reference numerals given to the respective parts in the embodiments described later. These reference numerals are the same as the reference numerals described in the claims of the claims. Similarly, it is only for the purpose of facilitating understanding of the contents, and the meaning of each component is not limited to the above-described parts.

In the power supply device (A) according to the present invention, the direct current motor (1) is activated by discharging the electric energy of the battery (30) of the power supply unit (3) energized by the switching means (5). The DC generator (2) is driven by the DC motor (1), and new electric energy is generated by the DC generator (2). Furthermore, the electricity passing through the DC motor (1) activates the DC generator (2) to assist the drive by the DC motor (1).
A part of the electric energy generated by the DC generator (2) is used to supply power to the electric load (8) such as various electric devices. The other part of the electric energy is used for charging the battery (30) of the power supply unit (3) or for replenishing the battery (30) with electric energy. Further, the remaining electric energy is used to drive the DC motor (1).

  In the battery (30) of the power supply unit (3) that is energized, discharging and charging or replenishment of electrical energy are performed simultaneously. In this case, the charge amount or the replenishment amount of electric energy is smaller than the discharge amount. When the above operation is performed for a required time, the battery of the power supply unit (3) to be energized is switched from the battery (30) to the battery (31) of another system by the switching means (5). This switching is repeated every required time. This time is appropriately set and is not limited. In the power feeding device (A), the same operation as described above is performed by the electric energy of the battery (31) that has been switched and started discharging.

  On the other hand, the energization of the battery (30) that has been energized is stopped, and the discharge is simultaneously stopped. The performance recovers when the discharge of the battery (30) stops. That is, in the battery part (30) where the discharge has stopped, the amount of stored electricity naturally recovers due to the internal chemical reaction. This is due to the characteristics of the battery (30, 31) used in the present invention, and no other electrical energy outside the device is required to restore this performance.

  When the battery (30) is not energized, that is, when it is not discharged, the amount of electricity stored increases, and charging or electrical energy from the DC generator (2) when energized It is possible to prevent the amount of power stored in the battery (30) of the power supply unit (3) from being greatly reduced by replenishment of. And it becomes possible to maintain the electrical storage amount of each battery (30, 31) by repeating switching of the battery which supplies electricity.

  In other words, if the amount of charge or the amount of electric energy replenished is adjusted to be the same as or slightly larger than the amount of discharge, the amount of electricity stored in the battery (30) of the power supply unit (3) is not reduced from a certain amount. Can be maintained, and permanent power supply becomes possible. In addition, even if the sum of the charge amount or the replenishment amount of electric energy is less than the discharge amount, if the difference is adjusted so as to be small, the decrease in the storage amount of the battery (30) can be suppressed and power supply It can be maintained for a long time.

  The amount of discharge of the battery (30, 31) of the power supply unit (3) mainly depends on the size of the electric load (8), so the size of the electric load (8) is adjusted or selected, Or conversely, assuming the size of the electrical load (8), the power supply unit (3) capacity of the battery (30, 31), the specifications of the DC motor (1) and DC generator (2), etc. By adjusting the scale of A), it is possible to adjust the period during which the power supply can be maintained.

  Compared to the DC generator (2), the DC motor (1) of the power supply device (A) uses a lower voltage, higher rotation type, and the higher voltage, lower rotation type. Compared with the case, the power generation efficiency in the DC generator (2) is improved.

  Further, the rotating wheel (60) provided on the rotating shaft (10) of the DC motor (1) or the rotating shaft (20) of the DC generator (2), and the rotational energy of the spinning wheel (60) are converted into electric energy. Means (6) are provided, and the obtained electric energy is charged to the battery (30, 31) of the power supply section (3) or supplemented with electric energy, the drive of the DC motor (1) or the electric load (8). In the device used for power feeding, first, the rotation of the rotating shaft (10) of the DC motor (1) and the rotating shaft (20) of the DC generator (2) becomes smooth and stable. As a result, power generation by the DC generator (2) is stably performed. In addition, electric energy can be generated and used separately from the DC generator (2) by means (6) for converting the rotational energy of the spinning wheel into electric energy.

(A) According to the present invention, when the discharge of the battery of the power supply unit stops, the amount of stored electricity increases due to the spontaneous recovery of performance, and charging from the DC generator or replenishment of electric energy when energized It is possible to prevent the amount of power stored in the battery of the power supply unit from being greatly reduced. Therefore, the present invention provides a long-term supply of a required amount of electric energy to various electric devices and other electric loads based on the electric energy stored in the power supply unit from the beginning without newly taking in electric energy from the outside. Can be maintained over time.

(B) By adopting a low-voltage, high-rotation type DC motor for the power supply device as compared with a DC generator, conversely, compared to the case of adopting a high-voltage, low-rotation type, the direct current The power generation efficiency of the power generator is improved, and the performance of the power feeding device such as the amount of power feeding and the operation maintenance period can be improved.

(C) It has a spinning wheel provided on the rotating shaft of the DC motor or the rotating shaft of the DC generator, and means for converting the rotational energy of the spinning wheel into electric energy, and the obtained electric energy is stored in the battery of the power supply unit. The one used for charging or replenishing electric energy, driving a DC motor or supplying power to an electric load first makes the rotation of the rotating shaft of the DC motor and the rotating shaft of the DC generator smooth and stable. To do. Thereby, the power generation by the DC generator is stably performed. Further, since the electric energy can be generated separately from the DC generator by means for converting the rotational energy of the spinning wheel into electric energy, it can be utilized, so that the performance of the power feeding device can be further improved.

  The present invention will be described in detail based on the embodiments shown in the drawings.

FIG. 1 is a wiring diagram showing an embodiment of a power feeding apparatus according to the present invention.
The structure of the power feeding device will be described with reference to FIG.

  The power feeding device A according to the present embodiment includes a main circuit C having a DC generator 2 that feeds an electric load 8 such as an electric device. In the main circuit C, the DC generator 2, the DC motor 1, and the power supply unit 3 are connected so as to be electrically in series. In the present embodiment, the DC motor 1 and the DC generator 2 employ commutator motors having essentially the same structure, but are not limited thereto.

  Each specification of the DC motor 1 and the DC generator 2 is 8000 rpm at 3 V for the DC motor 1 and 5000 rpm at 6 V for the DC generator 2. That is, since a DC motor 1 having a lower voltage and a higher rotation type than that of the DC generator 2 is adopted, good power generation efficiency can be obtained in the DC generator 2. The DC motor 1 may be a higher voltage, lower rotation type than the DC generator 2, or the same specifications may be adopted for both.

  The rotating shaft 10 of the DC motor 1 and the rotating shaft 20 of the DC generator 2 are directly connected, and the rotating shafts 10 and 20 are interlocked. Thus, the DC motor 1 becomes a drive source for driving the DC generator 2, and the DC generator 2 can generate DC electric energy by the operation of the DC motor 1. Both poles of the DC generator 2 are connected to an electric load 8.

  Reference numeral 6 denotes an auxiliary generator. The auxiliary generator 6 includes a spring wheel (flywheel) 60 provided on the rotary shaft 10 of the DC motor 1 and a coil 62 provided in a non-contact position with the circular rotation surface of the spring wheel 60. A permanent magnet 61 is provided on the circular rotating surface of the flywheel 60, and DC electric energy can be generated by the coil 62 by the rotation of the flywheel 60.

  Both poles of the coil 62 are connected to both poles of the DC motor 1, and the electric energy generated by the coil 62 is used to drive the DC motor 1. The electric energy can also be used for power supply to the electric load 8, charging of the batteries 30 and 31 of the power supply unit 3, or replenishment of electric energy. The structure of the auxiliary generator 6 is not limited to the above structure, and other structures may be employed as long as the energy loss is sufficiently small.

  The power supply unit 3 is provided between a terminal on one side of the DC generator 2 and a terminal on one side of the DC motor 1, and includes two systems of batteries 30, 31 provided in parallel. Have. As the batteries 30 and 31, alkaline batteries that are direct current power sources are employed. Alkaline batteries have the property that they can be charged and their performance recovers when the discharge stops. Each of the batteries 30 and 31 of the power supply unit 3 is provided with a capacitor (capacitor) 4 in parallel.

  A changeover switch 5 and a main switch 7 which are switching means are provided between the positive pole of the power supply unit 3 and one terminal of the DC motor 1. As the changeover switch 5, a semiconductor switch is employed in the present embodiment, and either one of the two systems of batteries 30 and 31 of the power supply unit 3 can be selectively energized.

  In the power supply device A, the DC generator 2 and the auxiliary generator 6 are provided as generators. However, the present invention is not limited to this, and only one of the DC generator 2 and the auxiliary generator 6 is used alone. You may make it provide. When the DC generator 2 is provided alone, the structure is such that the spring wheel 60 and the coil 62 are removed as they are from the structure shown in FIG. When the auxiliary generator 6 is provided alone, the DC generator 2 is removed from the structure shown in FIG. 1, and both poles of the coil 62 are connected to the electric load 8 in the same manner as the connection when the DC generator 2 is provided. It becomes the structure.

(Function)
With reference to FIG. 1, the operation of the power feeding device A according to the present embodiment will be described.
When the main switch 7 of the power feeding device A is turned on, the DC motor 1 is operated by the electric energy of the battery 30 of the power supply unit 3 on the side energized by the changeover switch 5. At the same time, the rotating shaft 20 of the DC generator 2 is driven by the rotation of the rotating shaft 10 of the DC motor 1, and new electric energy is generated by the DC generator 2. Furthermore, the electricity passing through the DC motor 1 activates the DC generator 2 to help drive the DC motor 1. Also, new electrical energy is generated by the auxiliary generator 6. In addition, the rotation of the rotary shaft 20 of the DC generator 2 is extremely stable because the spring wheel 60 is provided on the rotary shaft 10 of the DC motor 1, and the above-described power generation is performed stably.

  A part of the electric energy generated by the DC generator 2 is used to supply power to the electric load 8. Thereby, the electric load 8 such as an electric device can perform a predetermined operation and operation. The other part of the electric energy is used for charging the battery 30 of the power supply unit 3 that is energized or for supplementing the electric energy. Further, the remaining electric energy is used for driving the DC motor 1. Further, the electric energy generated by the auxiliary generator 6 is used to drive the DC motor 1 as described above. Note that the electric energy generated by the auxiliary generator 6 may be used for feeding the electric load 8 or charging the battery 30 (or 31) of the power supply unit 3 or replenishing the electric energy.

In the battery 30 of the power supply unit 3 that is energized, the electrical energy consumed mainly by the DC motor 1 is discharged. At the same time, charging or replenishment of electric energy is performed by energization from the DC generator 2. In this case, the amount of charge or the amount of electrical energy replenished is smaller than the amount of discharge, so the amount of stored electricity gradually decreases.
When the above operation is performed for a required time, the battery to be energized is switched from the battery 30 to the other battery 31 by the changeover switch 5. This switching is repeated at regular intervals (for example, every hour). In the power feeding device A, the same operation as described above is performed by the electric energy in the battery 31 that has been switched and started to discharge.

  On the other hand, the energization of the battery 30 that has been energized stops, and the discharge also stops. When the discharge of the battery 30 stops, a predetermined chemical reaction proceeds inside the battery 30, and the amount of stored electricity naturally increases and recovers. In other words, due to the characteristics of the alkaline battery employed in the battery 30 (or 31), the amount of electricity stored in the battery 30 increases without requiring other electrical energy outside the apparatus. And the said effect | action is repeated by switching the batteries 30 and 31 of the power supply part 3 by the changeover switch 5. FIG.

  That is, during the above operation, when the batteries 30, 31 of the power supply unit 3 are not discharged, the amount of electricity stored in the batteries 30, 31 is naturally increased to restore the performance and the power is supplied. When it is, charging from the DC generator 2 or replenishment of electric energy is performed. Thereby, it is possible to prevent the amount of power stored in the batteries 30 and 31 of the power supply unit 3 from being greatly reduced.

  That is, for example, the size of the electric load 8 is adjusted or selected so that the sum of the charge amount or the supplement amount of electric energy is at least the same as the discharge amount or larger than the discharge amount, or the size of the electric load 8 is Assuming that the power storage capacity of the batteries 30 and 31 of the power supply unit 3 and the specifications of the DC motor 1 and the DC generator 2 are adjusted so as not to reduce the charged amount of the batteries 30 and 31 from a certain amount. Can be maintained, and permanent power supply becomes possible. Further, even if the sum of the charge amount or the replenishment amount of electric energy is smaller than the discharge amount, if the difference is adjusted so as to be small, the decrease in the charged amount of the batteries 30 and 31 can be suppressed to a small extent. Can be maintained over a long period of time.

  According to the power supply device A according to the present embodiment, since extremely efficient power supply is possible in this way, for example, as a power source for outdoor lighting such as camping, or as a power source for cooking and lighting in a stall, etc. Furthermore, it can be used for charging electric devices such as mobile phones. Note that the power feeding device A is excellent and useful in that it hardly generates noise unlike an engine generator, for example.

  The terms and expressions used in the present specification are merely explanatory and not restrictive, and do not exclude terms and expressions equivalent to the above terms and expressions. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.

The wiring diagram which shows one Embodiment of the electric power feeder which concerns on this invention.

Explanation of symbols

A Power supply device C Main circuit 1 DC motor 10 Rotating shaft 2 DC generator 20 Rotating shaft 3 Power supply unit 30, 31 Battery 4 Capacitor 5 Changeover switch 6 Auxiliary generator 60 Handwheel 61 Permanent magnet 62 Coil 7 Main switch 8 Electric load

Claims (4)

  A DC generator (2) for supplying power, a DC motor (1), and a power supply unit (3) having a plurality of systems of batteries (30, 31) provided in parallel are electrically connected in series, and each battery (30 , 31) has the characteristic that it can be charged and the performance recovers when the discharge stops, and the DC generator (2) is driven by the DC motor (1) and is generated by the DC generator (2). Is used for charging the battery (30, 31) of the power supply unit (3) or replenishing the electrical energy, driving the DC motor (1) and supplying power to the electrical load (8). A power feeding method in which the battery (30, 31) to be energized among 3) is switched every required time. A DC generator (2) for supplying power,
A DC motor (1) for driving the DC generator (2);
A power supply unit (3) having a plurality of systems of batteries (30, 31) provided in parallel and supplying power to the DC motor (1);
Switching means (5) for switching the battery (30, 31) to be energized among the power supply unit (3) for each required time,
With
The DC generator (2), the DC motor (1), and the power supply unit (3) are electrically connected in series, and the battery (30, 31) can be charged and the performance is restored when the discharge stops. Has the characteristics,
The electric energy generated by the DC generator (2) is charged to the battery (30, 31) of the power supply unit (3) or supplemented with electric energy, the driving of the DC motor (1) and the electric load (8). Used to power
Power supply device. The DC motor (1) uses a lower voltage, higher rotation type compared to the DC generator (2).
The power feeding device according to claim 2. A spinning wheel (60) provided on the rotating shaft (10) of the DC motor (1) or the rotating shaft (20) of the DC generator (2), and means for converting the rotational energy of the spinning wheel (60) into electric energy ( 6), and the obtained electric energy is used for charging the battery (30, 31) of the power supply unit (3) or replenishing the electric energy, driving the DC motor (1), or supplying power to the electric load (8). used,
The power feeding device according to claim 2 or 3.

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