KR20100129680A - Charge pump apparatus for weak power recycling based on connection range control of series capacitor - Google Patents

Abstract

PURPOSE: A charging device for recycling weak power based on a serial connection control of a capacitor is provided to reduce installation costs by directly charging a storage battery with a high voltage using a generation facility with a low voltage. CONSTITUTION: A boosting unit is connected between a generation facility(1) and a storage battery system(2). A second weak power sensing controller(3-1b) control the output power of the generation facility within a sweep range by a plurality of switches(3-2-1 to 3-2-n). One ends of the plurality of switches are connected to a plurality of capacitors(C1-Cn). The other ends of the plurality of switches are connected to the generation facility. A second power boosting unit(3-2b) controls the voltage to the charging power of the storage battery system.

Description

Charge pump apparatus for weak power recycling based on connection range control of series capacitor}

The present invention is a switching control technology for interlocking a plurality of capacitors in series so that the battery can be charged even when the generator voltage is lower than that of the battery.

There are many kinds of power generation technologies using natural phenomena as a renewable energy source, such as wind power, wave power, tidal power, and solar power, and they are called wind power generators, wave power generators, tidal power generators, and solar power generators (solar cells). The generated power therefrom is configured to output alternating current (AC) to rectify as necessary to meet an appropriate load voltage, or to output direct current (DC) directly charging a storage battery connected to the load.

Here, in the case of the conventional natural force, for example, wind and wave power, changes in the 'strong', 'weak' and 'high' and 'low' of the wind, and in the case of tidal power Changes, and in the case of sunlight, always involve the difference between sunny and cloudy days, as well as changes in sunshine in the mornings and evenings, and in the region, which in turn results in a power factor (actually supplied to the load during the entire operating period of the plant). It refers to the time rate at which the effective power is obtained, and despite the conventional terminology, the power factor is defined as such in the present invention).

Conventionally, in order to increase the power factor as much as possible, the voltage of the generator is set relatively high so that the power can be supplied to the load even at the lowest possible energy, and when the voltage rises to the high voltage by the large energy, the unnecessary voltage is suppressed as the automatic voltage regulator. In this case, the difference between low power generation voltage at low energy and high power generation voltage at steady state becomes a problem of lowering efficiency.

That is, as shown in FIG. 1, when the generation voltage is set (A) so that the power (e) is properly supplied to the load only under the condition of high wind or wave strength, the power generation equipment operates effectively for the entire period (t). In order to improve this, even if the wind or the wave is weak, the power generation equipment is set for the whole period (t) when the generation voltage is set to supply the proper power (e) to the load (B). The period of effective operation (power factor) increases, but the loss of suppressing power through the automatic voltage regulator when strong energy (P point) occurs (that is, the difference between P point and B line becomes too large, hereinafter referred to as excess voltage) This is inevitably big. In addition, changing the setting criterion from point A to point B means that the power generation voltage is set to be high, and thus there is an inefficient problem such as an increase in the winding (capacity) of the power generation equipment. For example, if the reference point A that can be charged while the load is a 24V battery is set to 24V, it can be charged only during the voltage generation time higher than 24V, so there is a problem of only about 20% in terms of the overall period (the P point is about The name at 30V can also be expected as an eye guess in Figure 1). On the other hand, if the chargeable reference point B is set to 24V, the charging period between all generators reaches 80% or more, but in this case, the voltage at the P point is relatively high, so that the maximum point reaches 100 V or more, for example, as can be expected from the graph. As will be described later, it will be readily apparent to those skilled in the art that 100V-24V = 76V (76%), which is cut down in the automatic voltage regulator, is lost and safety problems are also raised due to high voltage.

In the case of photovoltaic power generation equipment (including solar cells), it is depicted as shown in FIG. 2, and in order to achieve an effective power generation effect on a cloudy day and morning and evening, the power generation voltage is set to B point, that is, It is necessary to set it high all the time. In this case, the loss with P point occurring at noon becomes a problem. In addition, increasing the power generation voltage in a photovoltaic power plant means increasing the number of solar cells, which is accompanied by problems such as installation cost, place (space), complexity of construction, and price due to the increase in the number of cells. . In view of this, modern solar cells are designed to charge only about 4 hours a day.

Therefore, it is not difficult to anticipate that the new idea of solving this problem is that the energy source can achieve a great effect of greatly improving the power factor in the non-constant wind, wave, tidal, solar and other non-constant renewable energy sectors. will be.

The first object of the present invention is to provide a weak power recycling charging apparatus that can obtain high efficiency power by adapting to natural phenomena varying from weak energy source to strong energy source.

The second object of the present invention is to provide a means for reducing the size of the power generation facilities, reducing the price, and efficiently producing power by being provided to directly charge a higher voltage storage battery even in the low voltage power generation facilities from the beginning. It's in Kozaham.

It is a third object of the present invention to provide a means or a method in which the present invention is utilized as a basic technology that can be utilized in various power generation facilities.

A weak power recycling and charging device according to a first example of the present invention (FIG. 8) for achieving the above technical problem includes: a booster unit 3 connected between a power generation facility 1 and a storage battery system 2; The booster 3 is provided with a connection control device for controlling the output power of the power generation equipment 1 to a sweep range by switching a plurality of switches 3-2-1 ... 3-2-n. A plurality of capacitors C1 ... Cn connected in series with one side end of the plurality of switches 3-2-1 ... 3-2-n; The second weak power detection control unit 3- by connecting the other terminal of the plurality of switches (3-2-1 ... 3-2-n) to the power generation facility (1). 1b) changes the series interlocking quantity of the charge and discharge capacitors C1 ... Cn as the plurality of switches 3-2-1 ... 3-2-n are connected to the sweep range and controlled. A second power boosting unit 3-2b in which the boosting is adjusted to reach the charging power of (2); It consists of; consisting of.

In addition, the weak power recycling and charging device according to a second example (Fig. 14) of the present invention for achieving the above technical problem: a boosting unit (3) connected between the power generation facility (1) and the battery system (2); The step-up unit 3 includes a sweep range by switching the output power of the power generation equipment 1 by switching a plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn). A third weak power detection control unit 3-1c for connection control to the plurality of capacitors; and a plurality of capacitors C1. Which are connected to the plurality of switches SH1... SHn, SL1 .. SLn, SC1 .. SCn. Cn) and the plurality of capacitors C1 ... Cn are connected in parallel as the plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn control switching connection. In combination so as to be charged and serially discharged, the third weak power detection control unit 3-1c controls the plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn to a sweep range. Number of interlocks of charge and discharge capacitors (C1 ... Cn) due to connection control Characterized in that it comprises; configuration consisting of; a third power change step-up portion (3-2c) is a step-up control so as to reach to the charging power of the battery system (2).

In addition, a weak power recycling and charging device according to a third example (Fig. 15) of the present invention for achieving the above-described technical problem: a boosting unit (3) connected between the power generation facility (1) and the battery system (2); The booster 3 includes: a fourth weak power for switching connection control of the output power of the power generation equipment 1 to a plurality of switches S1 ... Sn, Sg1, DS1, DS2, Sg2. A sensing controller 3-1d; and one end of the plurality of switches S1 ... Sn, Sg1 to each terminal of the plurality of capacitors C1 ... Cn connected in series, and the plurality of switches By connecting the other one end of the switches (S1 ... Sn, Sg1) to the power generation facility (1), the fourth weak power detection control unit (3-1d) is the plurality of switches (S1 ... Sn, Step-up voltage is adjusted to reach the charging power of the battery system 2 as a change in the series interlocking quantity of the charge and discharge capacitors (C1 ... Cn) according to the connection control of Sg1) to the sweep range, and the added capacitor ( Ccom) and a fourth power booster 3-2d for establishing a charge / discharge path as a control of the switches DS1, DS2, and Sg2.

In addition, the weak power recycling and charging device according to the fourth example (Fig. 16) of the present invention for achieving the above technical problem: a boosting unit (3) connected between the power generation facility (1) and the battery system (2); And, the booster 3; "The output power of the power plant 1 by switching a plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn) A third weak power detection control unit 3-1c for controlling connection in the sweep range; and a plurality of capacitors connected to the plurality of switches SH1... SHn, SL1 .. SLn, SC1 .. SCn. C1 ... Cn, and the plurality of capacitors C1 ... Cn as the plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn control switching connection. The third weak power detection control unit 3-1c sweeps the plurality of switches SH1... SHn, SL1 .. SLn, SC1 .. SCn. Interlocking of charge and discharge capacitors (C1 ... Cn) by connection control in the range A third power booster 3-2c in which boosting is controlled as a change in quantity; and " output power of the power plant 1 to a plurality of switches S1 ... Sn, Sg1, DS1, DS2, Sg2. A fourth weak power detection control unit 3-1d for switching connection control; and a plurality of capacitors C1 ... Cn connected in series with one end of the plurality of switches S1 ... Sn, Sg1. The fourth weak power detection control unit 3-1d is connected to each terminal, and the other one end of the plurality of switches S1 ... Sn and Sg1 is connected to the power generation facility 1. Step-up is controlled as the series interlocking quantity change of the charge and discharge capacitors C1 ... Cn according to the connection control of the switches S1 ... Sn, Sg1 to the sweep range, and the added capacitor Ccom and the switch ( And a fourth electric power boosting unit 3-2d for establishing a charge / discharge path as the control of DS1, DS2, Sg2), and the third electric power interlocked with the third weak power sensing control unit 3-1c. Step-up section 3-2c and fourth weak power A fifth power booster 3-2e configured to couple or selectively operate in series with or in series with the fourth power booster 3-2d interlocked with the sensing control unit 3-1d; It characterized in that it comprises a; configuration to boost to reach the charging power of 2).

In addition, a weak power recycling and charging device according to a fifth example (Fig. 17) of the present invention for achieving the above-described technical problem: between the power plant (1) having a plurality of output terminals and the conventional battery system (2) And a booster unit 3 connected to the booster unit 3, and the booster unit 3 supplies the output power of the power plant 1 to a plurality of switches Ss 1 -1 ... Ss n-1, Sp. A sixth weak power detection control unit 3-1f which switches to one or more of 1-1 ... Sp n-1); The sixth control transition detection weak power connecting the plurality of switches (Ss 1- 1 ... Ss n- 1, Sp 1- 1 ... Sp n-1) at least one switch contact of which is a (3-1f) According to the sixth power step-up section (3-2f) for changing the output terminal so that the electromotive force of the power generation equipment (1) is boosted, when the output potential of the power generation equipment (1) than the battery system (2) It characterized in that it comprises a configuration for automatically changing the connection of the power generation equipment (1) to be boosted.

The present invention as described above has the effect of significantly increasing the total chargeable period, that is, maximizing the power factor by allowing the battery to be charged even at low electromotive force (voltage) in a weak energy situation. Furthermore, this prevents excess voltage power loss occurring at high energy and enhances safety.

In addition, the present invention can reduce the number of windings of the generator by lowering the power generation voltage of the power generation equipment, and furthermore, in the case of solar cell power generation equipment to minimize the number of cells connected in series, the installation area and installation cost of the solar panel There is a saving effect.

In addition, the present invention has a multi-purpose effect that can be used in all power generation facilities, such as wind power, wave power, tidal power, solar power, charging function of a mobile phone, a vehicle, a ship using the swing characteristics, and also various There is also the effect of creating derivative application inventions or application technologies.

[Prior technology]

Since the present invention is capable of charging by pumping even if the electromotive force (voltage) of the power generation facility is lower than the voltage of the battery to be charged, the related art is not found. That is, the prior art using a natural drop is because charging is possible only when the electromotive force of the power generation equipment (in the present invention, the electromotive force refers mainly to the power generation voltage obtained from the power generation equipment) is higher than the charging voltage. Although it is possible to think of a configuration in which the output of the alternator is boosted by a transformer so that it can be charged even in the case of the micro electromotive force, in this case, the overvoltage becomes high in the normal electromotive force, so the loss is very large and the safety of the input power also becomes a problem. As described above is a problem of the prior art.

Korean Patent Laid-Open Publication No. 2002-0087100 (Nov. 21, 2002) relates to an 'ultra capacitor-based dynamically regulated charge pump power converter', so it can be contrasted with each other in the pump operation using a capacitor. have. In this regard, the prior art, for the purpose of a converter for supplying power to a load, which is a portable electronic device, by changing the switch matrix of the charge pump including the flying ultra-capacitor (CUF) as a dynamic operating frequency to a stable step-up to demand It can be seen that the configuration provides the step-down power. In other words, the stable response of the voltage is achieved by matching the frequency response characteristics of the ultra-capacitor (CUF) with the switching frequency. Therefore, it is naturally essential in the dynamic control part. In addition, the prior art is to adjust the switching operating frequency of only one pumping capacitor (CF) to adjust the voltage of the output stage capacitor (CL) within a maximum of 2 times, the present invention also targets a range higher than 2 times the pressure And the prior art is to 'switch to a single ultra capacitor + a plurality of dynamic operating frequencies', while the present invention is to 'sweep (swing) switching to a plurality of common capacitors + a fixed single operating frequency'. Are different from each other in concept. Whereas the prior art is to control the single capacitor at the operating frequency to achieve the step-up and step-down simultaneously, the present invention is different in concept in that the height of the step-up particularly by connecting a plurality of capacitors in a stack (stack) .

Above all, the present invention is to raise the weak power to be above the required voltage of the battery system by acting as a pump to boil the groundwater, so that the conceptual concept and the detailed technology for achieving the idea cannot be found in the prior art. will be. The prior art is different from the concept since the concept of supplying the charge of the battery to the load to a certain range of stable voltage.

Although the specific design may be further added or modified in the implementation stage, the technical spirit of the present invention may be well understood by only the following configuration and operation description illustrated for a typical preferred configuration. However, the interworking system between circuits or components shown in the following embodiments is not meant to limit the present invention, and various embodiments may exist within the technical scope of the present invention according to the design of the parts.

First, FIG. 3 is a diagram illustrating a problem related to the prior art, and FIG. 3 illustrates a conventional power generation equipment 1, a rectifier 2-1, an automatic voltage regulator 2-2, and a storage battery 2-3. ) Shows the concatenated configuration. If the output of the power generation equipment 1 is a direct current, the rectifier 2-1 may be omitted, and in some cases, the automatic voltage regulator 2-2 may be omitted and may be directly connected to the storage battery 2-3.

In FIG. 3, when the battery 2-3 is DC24V, at least 24V or more voltage is required to enable charging. Actually, at least DC26V is required as a voltage difference that causes a natural drop to charge a DC24V battery. However, in the present invention, such local values will not be presented in order to explain in principle. Therefore, the specification of the present invention will be understood from the same level of view.

Since most generators have different magnitudes of electromotive force (voltage) depending on the rotational force, it is natural that the electromotive force will increase significantly at normal rotational speed when the generation voltage is set so that charging is possible based on the low rotational speed. In this case, the automatic voltage regulator 2-2 suppresses the rising portion by itself and serves to adjust the storage battery so that a certain range of voltage is applied thereto.

Here it can be seen that there are two problems in the prior art of wind, wave, tidal, vehicle, marine generators. First of all, in order to obtain sufficient electromotive force even at a low speed, the number of turns of the generator coil must be increased and the appearance and price increase accordingly. Secondly, suppressing high electromotive force results in a loss of generated power in a charging circuit that assumes a constant charging voltage or current. Nowadays, most generators have built-in rectifiers and automatic voltage regulators, which add a means to regulate the excitation current at a certain number of revolutions to keep the output voltage constant, but it is difficult to handle a wide range of minute voltages. The development at ultra low speed has not been realized. That is, a precise automatic voltage regulator causes a loss of power, and a conventional generator-adjusted automatic voltage regulator additional generator has a problem in that the electromotive force is lowered at a minute energy (rotational speed).

In particular, in the case of the solar cell configuration as shown in FIG. 4, the excitation coil using an automatic voltage regulator in the generator as shown in FIG. 3 cannot be configured. As the voltage of the storage battery increases, the number of cells to be connected in series increases. That is, in order to charge a DC24V battery, for example, it is necessary to connect 12 2V solar cells in series, and similarly, to charge a DC100V battery, 50 cells must be connected in series.

Even in the electromotive force of each cell, it is a voltage design considering the sunlight when it is cloudy. For example, when 40 2V cells are used for charging 24V, the voltage reaches 96V in normal sunlight. The regulator's function is eventually wasted by losses, and in this configuration, the safety and heat dissipation of the regulator is also a new problem. Therefore, in order to reduce such losses, practically, the number of cells is set to the middle part to make a trade-off between loss and power factor. Accordingly, the time period that can be charged as a solar cell is 4 days a day on average. It's about an hour. In other words, about 12 hours of sunshine a day, the remaining 8 hours will not be used as a charging time. One of the aims of the present invention is to at least increase this charging time.

In the configuration of FIG. 3 charging the AC power and the configuration of FIG. 4 charging the DC power, other parts corresponding to the power generation equipment 1 are collectively defined as the battery system 2, and the present invention is now implemented. Principle explanation through example.

FIG. 5 is a block diagram illustrating the principle of the present invention, wherein the booster 3 boosts the power of the power plant when power is weak between the conventional power plant 1 and the battery system 2. It is configured through the.

Here, the power generation equipment 1 and the battery system 2 are conventional technologies in which charging is performed when the proper voltage is reached. Here, the conventional technology means that, for example, when the battery system is based on DC24V, the power generation equipment can be charged only at a voltage higher than 24V. Therefore, when the power generation equipment is lower than DC24V, it cannot naturally supply current to the battery system. do. In other words, the boosting unit 3 of the present invention shows the idea that charging is performed even when the power generation equipment is lower than DC24V.

FIG. 6 is a block diagram showing a rudimentary method among the concepts of the configuration of the booster 3 in FIG. 5, wherein the power generation equipment 1 converts renewable energy into electrical energy; A battery system 2 for charging electric energy from the power generation facility 1; A converter circuit section 3-2 for boosting electric energy from the power generation facility 1; The converter circuit portion 3-2 is interposed between the power generation equipment 1 and the connection passage of the battery system 2 so that charging is possible even when the potential of the power generation equipment 1 is lower than that of the battery system 2.

Since the low voltage can be boosted only by the basic converter circuit section 3-2, such a configuration is also possible if the voltage is boosted unconditionally. However, since the converter is a principle of an active element that generates back electromotive force at a current interrupted by a chopper, there is power consumption consumed by the chopper driving itself for boosting. Also, in FIG. When the voltage is reached, excessive voltage loss occurs in the automatic voltage regulator 2-2 of FIGS. 1 and 2, and there is a problem in that the chopper cannot be driven unless the voltage or power of the power generation facility reaches a predetermined level or more.

FIG. 7 is a block diagram of the prior art which can improve FIG. 6, which includes a power generation facility 1 for converting renewable energy into electrical energy; A battery system 2 for charging electric energy from the power generation facility 1; A first power boosting unit 3-2a for boosting the electric energy from the power generation facility 1 but controlling a range of the boost according to the control of the control input terminal; A first weak power detection control unit 3-1a that senses a weak power of the power generation equipment 1 and controls a supply signal of a control input terminal of the first power boosting unit 3-2a; Between the power generation facility 1 and the connection passage between the battery system 2, via the first power boosting unit 3-2a interlocked with the first weak power detection control unit 3-1a, It is configured to be able to charge even when the potential of the power generation equipment 1 is low. The diode 3-3 is a route for supplying power to the battery system without passing through the first power booster 3-2a when the voltage of the power generation facility is higher than that of the battery system, but basically the first power accumulator. Since the route is formed as (3-2a), the diode (3-3) can be operated without addition.

Referring to the operation of FIG. 7, the voltage comparator 3-1-1 and the converter controller 3-1-2, which are internal members of the first weak power detection control unit 3-1a, are output from the power generation facility 1. Compared to the voltage of the battery and the battery voltage of the battery system 2, the power generation equipment 1 is weak power (weak power in the present invention is a range of voltage that can not supply the charging current to the battery system by natural drop, for example from 0V And the output of the first weak power detection control unit 3-1a in accordance with the degree of difference in voltage. The output voltage of 2a) is adjusted to compensate for undergenerated power. That is, the internal chopper of the converter 3-2a boosts the power to compensate for the insufficient voltage to compensate for the output power. As a result, the power loss that is lost in the automatic voltage regulator 2-2 may be improved due to the severe excess voltage. Although not shown in detail in FIG. 7, the battery voltage of FIG. 3 may be directly detected in measuring the voltage of the battery system.

The principle of the first weak power detection controller 3-1a to adjust the output voltage of the converter 3-2a is a switching modulated power supply (SMPS) of the pulse width modulation (PWM) in this field. By applying the control technology of), for example, as the voltage of the power generation equipment is lower than that of the battery, the pulse width can be changed to drive the chopper in the direction of increasing the output voltage of the converter, and such SMPS technology consumes the power consumed by the chopper itself. It also has the advantage of minimizing the overdrive start voltage within a certain range.

On the other hand, when applying the Republic of Korea Patent Publication No. 2002-0087100 (2002.11.21.) Of the Republic of Korea Patent Publication introduced as the prior art in the application of Figure 7 'ultra capacitor-based dynamically controlled charge pump power converter' (3a), which uses the configuration of 'switching to a single ultra-capacitor + dynamic multiple operating frequencies' which stabilizes the power of the load side as the charging function of the power supply itself. It becomes equivalent. For reference, the present invention has been described above in contrast with the concept of 'sweep switching to a plurality of common capacitors + a fixed single operating frequency' on the contrary. Hereinafter, the configuration and operation of the present invention will be described in detail.

FIG. 8 is a block diagram illustrating a first example of the present invention, and is an example of boosting a capacitor by stacking capacitors in series instead of a converter as shown in FIG. 7.

In other words, in FIG. 8, the converter is not a circuit for boosting the power based on the power of the power plant, but a voltage boosting operation that simply builds up the voltage from the power plant at the moment. The principle is different.

Specifically, referring to FIG. 8,

And a booster unit 3 connected between the power plant 1 and the battery system 2, while the booster unit 3 is configured to convert the output power of the power plant 1 into a plurality of switches 3; A second weak power detection control unit 3-1b for controlling connection in the sweep range by -2-1 ... 3-2-n) switching; and the plurality of switches 3-2-1 ... 3 One end of the terminal -2-n is connected to each terminal of the plurality of capacitors C1 ... Cn connected in series, and the other of the plurality of switches 3-2-1 ... 3-2-n One end is connected to the power generation equipment 1, so that the second weak power detection control unit 3-1b connects the plurality of switches 3-2-1 ... 3-2-n to a sweep range. A second power booster (3-2b) whose voltage is adjusted to reach the charging power of the battery system (2) as a change in the series interlocking quantity of the charge and discharge capacitors (C1 ... Cn) according to the control; It characterized by including. Here, the power generation equipment 1 and the battery system mean a conventional configuration, as described above.

The operation of FIG. 8 is explained as follows.

In the state of high power generation voltage, the positive voltage is connected to the diode system in the direction of the diode 3-3, and the negative voltage, or ground, is connected to the ground terminal of the battery system via the switch Sg. To form a route. It is a conventional natural drop charging circuit.

Here, when the positive potential of the power generation voltage 1 becomes lower than the positive potential of the battery system 2, it is natural that the diode 3-3 cannot pass a current, and accordingly, the battery system 2 Will not work with the charging function. In this voltage reversal operation, the comparator 3-1-1 operates to generate an output of the sweep switching driver 3-2-2, which first opens the switch Sg to open the power plant 1. After floating the negative power source from ground, connect the positive (+) (-) connection point of the power plant to the switches (3-2-1), (3-2-2) and (3- 2-n) is sequentially contacted with a swing to charge individual capacitors C1, C2, ... Cn with terminals connected to both ends of the switch.

First of all, it is easy to think of the syntheses in that the capacitors C1, C2, ... Cn are connected in series, so that in the battery system 2, the charge charged in each capacitor is drained from the voltage of the power generation equipment. Will reach. That is, whenever the capacitors are charged one by one in the swing, the uppermost capacitor (C1) voltage flowing into the battery system may be thought of as being pumped out in multiples.

However, in practice, only the initial voltage of the impact voltage by the initial capacitor C1 is doubled, and from the next capacitor C2, the voltage reaches almost the same value as the impact voltage of the first capacitor C1 (capacitor filling voltage *). n times), and the reason is as follows.

If the generation voltage is 22V and the required voltage of the battery system is 24V, the second capacitor (C2) is charged after the capacitor (C1) corresponding to the first contact point is charged, and the charging voltage of (C1) and the generation voltage are (C1). As a double voltage principle, 22V is summed, 44V voltage is supplied to the battery system, but from the third, (C1 = 22V) + (C2 = 22V) + (generation voltage = 22V) = 66V, instead of (C1 = 22V) Among the + (generation voltage = 22V) = 44V, only 24V, which is the same as the voltage of the battery system, remains and the voltage corresponding to the remaining 20V flows into the battery system (2) and the voltage is extinguished, so the third degree (C1 = 24V-22V = 2V) + (C2 = 22V) + (generated voltage 22V) = 46V, even though the capacitors (C1, C2, ... Cn) are sequentially charged as a whole, the voltage supplied to the battery system (2) is very large around 24V. There is no change. In other words, the voltage of 46V is pumped by the current (power) flowing when it meets the voltage of 24V, which means that the charge is increased only at the moment of switching each time as if water is pumped up.

If the weak power, that is, the generation voltage is 2V and the voltage of the battery system is 12V, six boosting capacitors (C1, C2, ... Cn) will be required. That is, because 6 * 2V reaches 12V. In this configuration, the voltage that can flow in the battery system 2 is not reached until the first swing is performed and all six capacitors are charged. However, in the next swing, the battery system can flow in the battery system 2 with the same pumping action as the previous action. do. In other words, as it may be associated with a manual pump, water is not discharged to the outside of the container until the water is accumulated in the initial stage of operation, but after the container is filled with water, the water that flows up after each pumping flows outward. It is the same principle as that which comes out.

If the swing speed (ie pumping speed) is slow, the capacity of the capacitor must be increased and the ripple becomes large. On the other hand, if the swing speed is high, the capacity can be lowered and the content of the ripple is also small. Faster noise can cause noise in wireless communications, so a compromise must be set in the appropriate range. According to the experiment, the swing speed was appropriate between several tens of HZ and several hundred KHz. Of course, the more current required for the battery system, the larger the capacity of the capacitor.

In the boosting circuit using the capacitor, since the capacitor itself operates as a resistance during overcurrent, even if the battery is charged with a double voltage, the battery of the battery system 2 can damp it and there is no change in the voltage. . However, the present invention also includes a scheme for preventing such a sudden voltage supply, and a method of finely controlling the voltage will be described below with an example. In particular, the configuration of FIG. 8 is effective when the negative polarity of the power generation equipment 1 can be floated (insulated) from the ground.

Controlling the connection in the sweep switching to the sweep range in FIG. 8 means that the sweep (swing) range is controlled to connect only a part from the uppermost capacitor C1 in FIG. 8 in view of the low voltage of the power generation equipment 1. Or a term that includes a sweeping action of sequentially connecting all capacitors as a whole as a principle, which is commonly applied to the specification of the present invention.

9 to 13 are block diagrams showing that the switch 3-2-1 shown in FIG. 8 can be actually achieved by various circuit designs, and FIG. 9 is composed of transistors or GTRs, TRIACs, SCRs, and the like. 10 is a photo-transistor, etc., FIG. 11 is a bidirectional switch, etc., FIG. 12 is a photo-FET switch, etc., and FIG. 13 is a configuration using a mechanical relay. In other words, the configuration of the switch can be designed innumerable according to the alternating current and direct current characteristics.

(A1) and (b1) in Figs. 9 to 13 respectively show (a1) and (b1) in the switch 3-2-1 in Fig. 8, for example, (Q1) and ( The conduction of Q2) performs the same operation as that in which the contact (a1) and the contact (b1) are connected and conducting in FIG. 8, which is a common principle in all of FIGS. 9 to 13. Meanwhile, it will be readily apparent to those skilled in the art from (a) and (b1) that the terminal (c) in FIG. 9 to FIG. That is, although not shown, the input of the (c) terminal is connected to the output of the swept switching driver 3-2-2, for example, according to the switch control range generated in the swept switching driver. As an input principle, an input is supplied so that any one or more of the switches 3-2-1, 3-2-2, and 3-2-n in the control target range are swing-connected.

14 is a block diagram showing a second example of another configuration of the present invention, comprising: a booster unit 3 connected between a power generation facility 1 and a storage battery system 2; (3); is a third weakness for connecting and controlling the output power of the power generation equipment 1 to the sweep range by switching a plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn). A power sensing controller 3-1c; and a plurality of capacitors C1 ... Cn connected to the plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn. As the plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn control switching connection, the plurality of capacitors C1 ... Cn may be parallel charged and series discharged. In combination, the third weak power detection control unit 3-1c charges and discharges as the plurality of switches SH1... SHn, SL1 .. SLn, SC1 .. SCn are connected to the sweep range. The battery system as a change in the interlocking quantity of the capacitor (C1 ... Cn) Characterized in that it comprises, (2) a third power step-up portion (3-2c) is a step-up control so as to reach to the charging power of; the configuration was made.

14 is particularly effective when the negative polarity of the power generation equipment 1 cannot be insulated from the ground, that is, when the battery system 2 and the power generation equipment 1 have to be configured in a common grounding manner. to be.

In FIG. 14, when the voltage of the power generator 1 is higher than the battery system 2, charging is performed through the diode 3-3, and when the voltage is low, the third weak power sensing controller 3-1c generates an output. The principle of driving the switches SH, SL, and SC is the same as in FIG. 8.

In FIG. 14, the third weak power detection control unit 3-1c normally conducts both the switches SH1, SH2,... SHn and (SL1, SL2, .. SLn) to the capacitors C1, C2. In addition to charging at a time, ... Cn) at the same time, the switch (SC1, SC2, ... SCn) is kept open in this normal charging state. (The switches depicted in FIGS. 9-13 are shown with the same circuit symbols as SHn from FIG. 14).

Next, if the output voltage of the power generation equipment 1 has a lower inversion voltage, the third weak power detection control unit 3-1c switches the switch range corresponding to the lower generation voltage difference, for example, a capacitor ( Opening the switches SH1 and SL1 to use the charge charged in C1 for level up and conducting the switch SC1 at the same time to boost the voltage as the voltage + generation voltage of C1. It supplies electric power to the battery system 2, and these (SH1 and SL1) and (SC1) are alternately connected at a high speed, and eventually performs the action of boosting the original power plant voltage by pumping.

Although not shown, if the pumping voltage does not reach the battery system voltage, the third weak power detection control unit 3-1c operates up to the second capacitor C2, and its action is (SH1, SH2) and (SL1). , SL2) is opened and the electric charges of (C1) and (C2) are connected in series by conducting (SC1, SC2) to perform the multistage step-up pumping action as shown in FIG. The operation range setting of such a switch may be initially designated as a result of weak power detection, or one of the steps (C1) may be selected to additionally reset the range if it is not met.

In FIG. 14, the switches (SH1, ...) and (SL1, ...) are switches that are normally open to prevent short circuits during the pumping action while the capacitor is conducted to charge. It is an open switch that couples capacitors in series with conduction in the set range only when pumping action is required. As described above, the pumping action refers to pumping, which is a voltage boosting action at each switching time or period as the switch is switched at a high speed. In FIG. 14, (SH1, ..., SL1, ...) and ( As SC1, ... are alternately connected to each other, pumping is performed as a cycle each time (SC1, ...) is conducted.

15 is a block diagram showing a third example of another embodiment of the present invention, comprising: a boosting unit 3 connected between a power generation facility 1 and a storage battery system 2; 3); The fourth weak power detection control unit (3-1d) for switching and controlling the output power of the power generation equipment 1 to a plurality of switches (S1 ... Sn, Sg1, DS1, DS2, Sg2); And one end of the plurality of switches S1 ... Sn, Sg1 to respective terminals of the plurality of capacitors C1 ... Cn connected in series, and the plurality of switches S1 ... The other weak end of Sn, Sg1 is connected to the power generation equipment 1, so that the fourth weak power detection control unit 3-1d connects the plurality of switches S1 ... Sn, Sg1 to the sweep range. Step-up voltage is adjusted to reach the charging power of the battery system 2 as a change in the series interlocking quantity of the charge and discharge capacitors (C1 ... Cn) according to the control, and the added capacitor (Ccom) and the switches (DS1, DS2) , Sg2) A fourth power control step-up portion (3-2d), which constitute the charge-discharge path; characterized in that it comprises; configuration of one.

In FIG. 15, the comparator 3-1-1 performs the function of detecting how low the power generation equipment is than the battery system as described above. As a result, for example, if the voltage is in the range of 22V or more and 24V from the voltage requiring 24V charging (hereinafter, this is defined as one step), the sweep range controller 3-1-2 is capable of driving the first-stage switch S2. To generate an output in the range, and thus the switch alternates between the contact S1 and the contact S2, and as a switched action, the charge charged in the first step-up capacitor C1 is transferred to the contact S2. Each time it is contacted is supplied to the battery system (2) by the pumping action.

More specifically, assuming that the fourth power booster 3-2d is configured in series of 12 capacitors C1 to Cn, the voltage of the power generation equipment is 24V or higher, which is higher than that of a normal voltage battery system. When a high voltage is applied, since the contact point of the switch is in contact with (S1), both ends of the boost capacitor C1 are 24V / 12, and charging of 2V or more is performed. At this time, when the generation voltage becomes 22V, the sweep range controller 3-1-2 switches the contact point from (S1) to (S2), and at the time of switching, the 2V that was charged in the boost capacitor C1 is the generation voltage (1). ), And finally, 22V + 2V = 24V is supplied to the battery system to supply power to the battery system 2 higher than the power generation (1) voltage. By reciprocating at high speed, each time it comes into contact with S2, it is possible to supply power to the battery system. However, as described above in principle in FIG. 8, even when switching to the range of (C1, C2, ... Cn) in FIG. 15 does not actually exceed the voltage of the battery system, the switching range here establishes a path for charging and discharging. It is good to understand that it is.

Capacitor Ccom equally charges the generator voltage charging potential at both ends when it reaches the lowest switch Sg1 to the capacitors C1, C2, ... Cn connected in series in the next stroke. It is a capacitor for the purpose of discharge. The effect is that (Scom) is opened by (Sg1) and (Sg2) immediately after (Sg1) contacts and supplies the charge charged in (Cn) to the battery system (2). ) Is discharged through the path of (DS1) → (C1, C2, ... Cn) → (DS2), and according to the capacity of the entire capacitor (C1, C2, ... Cn) In order to distribute the charge evenly, this discharge path not only functions to subtly charge the charge of (Ccom) to each capacitor (C1, C2, ... Cn) as 1 / n, but also (Ccom) When the same, it also serves to prevent the charging path of the capacitor (C1, C2, ... Cn) can not be established. Accordingly, the switching of the contact point to (S2, ... Sn, Sg) swinging again after (Ccom) is discharged is to act to boost the supply of the battery system (2) by pumping.

If a Zener diode (or resistor bridge) is connected at both ends of each capacitor, the voltage distribution can be made constant for each capacitor. However, even if the capacity of each capacitor connected in series is the same, it is uniform within a considerable range. The distribution of the voltage is possible, and the meaning of uniformly distributing the voltage to each capacitor means that the embodiment of FIG. 8 (pumping action of floating ground) and FIG. 14 (pumping action of common ground) are shown in the power generation equipment 1 voltage. 15 shows pumping by 1 / n times, compared with pumping by n times, which is to minimize ripple supplied to the battery system.

FIG. 16 shows a combination of the embodiment of the third power booster 3-2c of FIG. 14 and the embodiment of the fourth power booster 3-2d of FIG. 15 to obtain a high voltage up to n times from a minute voltage boost of 1 / n. It is a block diagram which is the 4th example which changed the pressure up to a straight line.

Specifically, FIG. 16 is provided with a boosting unit 3 connected between the power plant 1 and the battery system 2, while the boosting unit 3 is “the“ of the power plant 1; A third weak power detection controller 3-1c for controlling the output power to be connected to a sweep range by switching a plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn; and the plurality of A plurality of capacitors (C1 ... Cn) connected to the switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn) of the plurality of switches (SH1 ... SHn, SL1) The third weak power detection control unit 3 is coupled to the plurality of capacitors C1 ... Cn so that parallel charging and series discharge can be performed as SLn, SC1 ... SCn control switching connection. 1c) is a change in the interlocking quantity of the charge and discharge capacitors C1 ... Cn according to the connection control of the plurality of switches SH1 ... SHn, SL1 ... SLn, SC1 ... SCn in the sweep range. A third power boosting unit 3-2c in which the boosting is controlled; A fourth weak power detection control unit 3-1d for switching and controlling the output power to the plurality of switches S1 ... Sn, Sg1, DS1, DS2, Sg2; and the plurality of switches S1 ... Sn , One end of Sg1 is connected to each terminal of a plurality of capacitors C1 ... Cn connected in series, and the other one end of the plurality of switches S1 ... Sn, Sg1 is connected to the power generation facility ( Charge and discharge capacitors C1 ... Cn as the fourth weak power detection control unit 3-1d connects and controls the plurality of switches S1 ... Sn, Sg1 to a sweep range in connection with 1). The fourth power booster (3-2d) for which the voltage boost is adjusted as a series interlocking quantity change of the < Desc / Clms Page number 5 > And a fourth power boosting unit 3-2c interlocked with the third weak power sensing control unit 3-1c and the fourth power boosting unit 3-1c interlocked with the fourth weak power sensing control unit 3-1d ( 3-2d) combine or optional alternatives in series Hayeoseo connected to "," configured to step-up so as to reach to the charging power of the battery system (2);; fifth power boosting section (3-2e) configured to the same is characterized in that it comprises a.

In brief, only the mixed action described above, in FIG. 16, when (Sg3) is opened and (Sg4) is turned off and the operation of the third power booster 3c is stopped, the generated voltage is lowered by 1 / n. As described above with reference to FIG. 15, the fourth power boosting unit 3-2d operates, and at this time, the power output from the 3-3d is (Sg4) → (SL1) → (SC1) → (SH2) → ( It is supplied in the path of SH1) or in the path of (Sg4) → (SL1) → (C1).

If the power generation voltage is lowered to exceed the capacity of the fourth power booster 3-2d, the principle of the third power booster 3-2c as shown in FIG. 14 is operated. In this case, (Sg4) Open and conduct the action by conducting (Sg3).

Here, if it is necessary to exceed the capability of the fourth power boosting unit 3-2d while minimizing a sudden double voltage shock, after opening (Sg3) and conducting (Sg4), the third part of FIG. The operation of the power booster 3-2c and the operation of the fourth power booster 3-2d of FIG. 15 are simultaneously applied. Accordingly, the pumping voltage can be linearly changed from 1 / n times → n times → n + (1 / n) ... → 2n + (1 / n), so that the voltage supplied to the battery system 2 is The ripple is minimized while boosting extensively.

FIG. 17 is a block diagram showing a fifth example of another embodiment of the present invention, in which a boosting unit 3 connected between a power generation unit 1 having a plurality of output terminals and a conventional battery system 2 is shown. The booster 3 includes a plurality of switches Ss 1-1 to Ss n-1 and Sp 1-1 to Sp n for output power of the power plant 1. A sixth weak power detection control unit 3-1f which switches to one or more of -1); Switching at least one of the plurality of switches Ss 1-1 ... Ss n-1, Sp 1-1 ... Sp n-1 connected to the switching unit as the sixth weak power detection control unit 3-1f. According to the sixth power step-up section (3-2f) for changing the output terminal so that the electromotive force of the power generation equipment (1) is boosted, when the output potential of the power generation equipment (1) is lower than the battery system (2) It characterized in that it comprises a configuration for automatically changing the connection of the power generation equipment (1) to be boosted.

In FIG. 17, the power generation equipment 1 is different from the above embodiment, for example, in the case of a solar cell, for example, parallel connection or serial connection of each cell (Cell 1, Cell 2, Cell 3, ... Cell n) as an output terminal. This configuration is connected to each switch of the sixth power booster (3-2f) to obtain the generation (1) voltage in series according to the switch contact switching or the generation (1) voltage in parallel Obtained.

That is, the switches Sp 1-1 and Sp 1-2, Sp 2-1 and Sp 2-2, and Sp n-1 and Sp n-2 of the sixth power booster 3-2f are When the switch is electrically connected to the power supply and the negative power supply, the voltages of the cells 1, 2, 3, and n of the power generation facility 1 are supplied to the battery system 2 in parallel. Switches (Ss 1-1, Ss 1-2), (Ss 2-1, Ss 2-2) and (Ss n-1, Ss n-2) are assigned and connected to (+) power and (-) power respectively. When the switch is turned on, the voltages of the cells 1, 2, 3, and n of the power generation equipment 1 are supplied to the battery system 2 in series. Here single switch pairs are alternatively operated with each other, for example (Ss 1-1, Ss 1-2) is open when (Ss 1-1, Ss 1-2) is conductive.

In the normal electromotive force, the operation of FIG. 17 will be described in detail after assuming that each cell of the power generation equipment 1 is connected in parallel to reach the charging voltage of the battery system 2.

In normal normal electromotive force, the switches (Sp 1-1, Sp 1-2) and (Sp 2-1, Sp 2-2) and (Sp n-1, Sp n-2) are turned on, and all cells ( Cell 1, Cell 2, Cell 3, ... Cell n) are connected in parallel so that a voltage, for example, 12V, obtained from each cell is supplied at 12V to the battery system 2 so that the 12V battery system 2 is normal. Perform a filling operation.

For example, if the sunlight is weakened and each cell outputs a voltage lower than 12V, the sixth weak power detection controller 3-1f detects the difference in voltage and the sweep range controller 3-1-2 switches the switching range. To be set. In other words, if the generation voltage of each cell is 10V, only the (Ss 1-1, Ss 1-2) and (Sp 1-1, Sp 1-2) can be switched and driven. 1, Ss 1-2) and (Sp 1-1, Sp 1-2) in addition to the conversion of (Ss 2-1, Ss 2-2) and (Sp 2-1, Sp 2-2) It is to set the range of switch switching according to the detection result to activate.

Accordingly, when the power generation voltage is 10V, the cell 1 is boosted and connected in series to the parallel connection of the cells 2, 3, and n, so that the overall voltage becomes 10V + 10V = 20V. In the case where the voltage is 6V, it can be seen that the cells 1 and 2 are boosted in series with the parallel connection of the cells 3 and n, so that the voltage as a whole becomes 6V + 6V + 6V = 18V. It can be seen that the voltage supplied to the battery system 2 is always 12V or more as the boosting action, where the excess voltage exceeding 12V is previously suppressed by the automatic voltage regulator 2-2 in FIGS. 3 and 4. Of course. On the other hand, when setting the switching range of the switch, it is possible to set a margin range for switching the switch only when it falls below an appropriate voltage. It is also possible to have a single cell or a plurality of cells switched at high speed.

Although not shown in the present invention, all circuits may include means for inserting an inductor such as a choke coil into an output terminal connected to the battery system 2 to minimize a shock current supplied from a capacitor when switching a switch. Ripple reduction and safety can be ensured. In addition, a reverse blocking diode (3-3, etc.) may be inserted at the connection point of each circuit.

In the configuration of FIG. 17, the direct parallel connection control for variable connection as the weak power detection control unit prevents excessive voltage which is greatly increased in the normal electromotive force, and also stores and utilizes the renewable energy in the battery system 2 without missing the weak power. It works. On the other hand, it will be apparent to those skilled in the art that the configuration of FIG. 17 can also be used for direct parallel connection control of an alternator.

The terms of the present disclosure are summarized as follows.

The power generation equipment (1) for converting renewable energy into electrical energy is a general term for power generation equipment that generates electric energy by using irregular energy such as natural force, not artificial energy supply such as an engine.

Detecting a weak power condition of the power plant 1 is a result of measuring the voltage difference between the power plant 1 and the battery system 2 (including measuring the voltage of the battery) as described above. In addition to the means for sensing, in some cases, a method of measuring the voltage difference between the separate reference voltage and the power generation equipment 1 may detect only the voltage of the power generation equipment 1 and determine that the voltage is low when the voltage is low. have. Furthermore, detecting the weak power means to sense whether the current is weak by detecting the charging current.

As described above, switching control of a plurality of switches is not only a means for switching the sequential switches by the range set by the sweep range, but also an arbitrary switching of the switches corresponding to the step-up capacitors located in the middle within a range in which the circuit is not shorted or opened. Even if the capacitors are stacked in series, the capacitors actually act as resistors in overcurrent, so they can be used to switch the switch from swing to swing without specifying a range. Therefore, the present invention has been described in the sense that it includes any one or more of these optionally.

Pumping in the present invention is a term describing a pump (pump) action in which current flows into the battery system by a difference in voltage at the instant of an equivalent series connection of a capacitor added to the power generation equipment 1 as described above.

In the present invention, the range of the boost is controlled to mean that the quantitative magnitude of the voltage or current with respect to the power from the power generation facility 1 is controlled.

The embodiment of the present invention described above is only one of many embodiments that can be configured while including the technical idea of the present invention. For example, the configuration of FIG. 17 is a combination of windings of induction generators in series and parallel to boost or depressurize. It can also be used as a configuration. In particular, as the specific circuit is not shown in detail in the drawings on the premise of using the conventional technical common sense, the components not illustrated are not intended to be limited to a particular shape or material, and the construction or general level of detail in this field is not limited to a specific shape or material. Encompasses

The present invention is a method or apparatus technology for charging control or load control of all power generation facilities in which the electromotive force is not constant, such as a charging function of a mobile phone, a vehicle, a ship, as well as wind power, wave power, tidal power and solar power. There is also industrial utility to motivate and direct use in existing battery charging systems as products.

1 and 2 is a diagram illustrating a state in which energy is changed in the renewable energy power generation facility

3 and 4 is a block diagram showing a conventional battery charging system

5 is a block diagram collectively illustrating the concept of the present invention.

6 and 7 are block diagrams showing an embodiment of the present invention.

8 is a block diagram showing another embodiment of the present invention.

9 to 13 are various circuit diagrams illustrating the switch configuration of FIG. 8.

14 to 17 are block diagrams each showing yet another exemplary embodiment of the present invention.

Claims (5)

And a booster unit 3 connected between the power generation facility 1 and the battery system 2, while the booster unit 3 is provided. A second weak power detection control unit 3-1 b for controlling the output power of the power generation equipment 1 to be in a sweep range by switching a plurality of switches 3-2-1... , One end of the plurality of switches 3-2-1 ... 3-2-n is connected to each terminal of the plurality of capacitors C1 ... Cn connected in series, and the plurality of switches (3- The second weak power detection control unit 3-1b connects the other one end of 2-1 ... 3-2-n to the power generation facility 1 so that the plurality of switches 3-2-1 Step-up is adjusted to reach the charging power of the battery system 2 as a change in the series interlocking quantity of the charge and discharge capacitors (C1 ... Cn) by controlling the connection to the sweep range ... 3-2-n) A second power boosting unit (3-2b); consisting of; a weak power recycling charging device comprising a. And a booster unit 3 connected between the power generation facility 1 and the battery system 2, while the booster unit 3 is provided. Third weak power detection control unit (3-) for connecting and controlling the output power of the power generation equipment 1 to the sweep range by switching a plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn). 1c); A plurality of capacitors (C1 ... Cn) connected to the plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn), the plurality of switches (SH1 ... SHn) The plurality of capacitors C1 ... Cn are coupled to be parallel-charged and series-discharged according to the switching connection control of SL1 ... SLn, SC1 ... SCn, so that the third weak power sensing control unit ( 3-1c) the interlocking quantity of the charge and discharge capacitors C1 ... Cn as the connection control of the plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn) in the sweep range And a third power boosting unit (3-2c) in which the boost is adjusted to reach the charging power of the battery system (2) as a change. And a booster unit 3 connected between the power generation facility 1 and the battery system 2, while the booster unit 3 is provided. A fourth weak power detection control unit 3-1d for switching and controlling the output power of the power generation facility 1 to a plurality of switches S1 ... Sn, Sg1, DS1, DS2, Sg2; and One end of the plurality of switches S1 ... Sn, Sg1 is connected to each terminal of the plurality of capacitors C1 ... Cn connected in series, and the plurality of switches S1 ... Sn, Sg1 By connecting the other end of the) to the power generation equipment 1, the fourth weak power detection control unit 3-1d is connected to control the plurality of switches (S1 ... Sn, Sg1) in the sweep range Step-up voltage is adjusted to reach the charging power of the battery system 2 as the series interlocking quantity change of the charge and discharge capacitors (C1 ... Cn), and the added capacitor (Ccom) and the switches (DS1, DS2, Sg2) The fourth power booster (3-2d) to establish a charge and discharge path as a control of; consisting of; weak power recycling charging device comprising a. And a booster unit 3 connected between the power generation facility 1 and the battery system 2, while the booster unit 3 is provided. "The third weak power detection control unit for connecting and controlling the output power of the power generation equipment 1 to the sweep range by switching a plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn) ( 3-1c); A plurality of capacitors (C1 ... Cn) connected to the plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn), the plurality of switches (SH1 ... SHn) The plurality of capacitors C1 ... Cn are coupled to be parallel-charged and series-discharged according to the switching connection control of SL1 ... SLn, SC1 ... SCn, so that the third weak power detection control unit ( 3-1c) the interlocking quantity of the charge and discharge capacitors C1 ... Cn as the connection control of the plurality of switches (SH1 ... SHn, SL1 ... SLn, SC1 ... SCn) in the sweep range A third power boosting unit 3-2c in which the boosting is adjusted as a change; and "Fourth weak power detection control unit 3-1d for switching and controlling the output power of the power generation facility 1 to a plurality of switches S1 ... Sn, Sg1, DS1, DS2, Sg2; One end of the plurality of switches S1 ... Sn, Sg1 is connected to each terminal of the plurality of capacitors C1 ... Cn connected in series, and the plurality of switches S1 ... Sn, Sg1 By connecting the other end of the) to the power generation equipment 1, the fourth weak power detection control unit 3-1d is connected to control the plurality of switches (S1 ... Sn, Sg1) in the sweep range The fourth step of establishing a charge / discharge path under the control of the added capacitor Ccom and the switches DS1, DS2, Sg2 is controlled by the change in the series interlocking quantity of the charge and discharge capacitors C1 ... Cn. A power boosting unit 3-2d; " The third power booster 3-2c interlocked with the third weak power sensing controller 3-1c and the fourth power booster 3-2d interlocked with the fourth weak power sensing controller 3-1d. A fifth power boosting unit (3-2e) configured to combine or selectively operate in series; and to increase the charging power of the battery system (2); Weak power recycling charger. And a booster unit 3 connected between the power plant 1 having a plurality of output terminals and a conventional battery system 2, while the booster unit 3 is provided. A sixth weak power for switching and connecting the output power of the power generation equipment 1 to at least one of a plurality of switches Ss 1-1 ... Ss n-1, Sp 1-1 ... Sp n-1 Detection control unit 3-1f; Switching at least one of the plurality of switches Ss 1-1 ... Ss n-1, Sp 1-1 ... Sp n-1 connected to the switching unit as the sixth weak power detection control unit 3-1f. According to the sixth power step-up section (3-2f) for changing the output terminal so that the electromotive force of the power generation equipment (1) is boosted, when the output potential of the power generation equipment (1) is lower than the battery system (2) Weak power recycling charging device, characterized in that it comprises a configuration for automatically changing the connection of the power generation equipment (1) to be boosted.

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