JPH1146451A - Solar battery power unit - Google Patents
Solar battery power unitInfo
- Publication number
- JPH1146451A JPH1146451A JP9198759A JP19875997A JPH1146451A JP H1146451 A JPH1146451 A JP H1146451A JP 9198759 A JP9198759 A JP 9198759A JP 19875997 A JP19875997 A JP 19875997A JP H1146451 A JPH1146451 A JP H1146451A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power storage
- circuit
- reference value
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Dc-Dc Converters (AREA)
- Photovoltaic Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば発光ダイオ
ード等を用いた自発光式の道路鋲や道路標識等において
好適に用いられる太陽電池式電源装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell type power supply suitably used for a self-luminous road tack or a road sign using a light emitting diode or the like.
【０００２】[0002]
【従来の技術】従来、発光ダイオード等を用いた自発光
式の道路鋲や道路標識等に用いられる太陽電池式電源装
置は、太陽電池から出力される電力を発光ダイオード等
の負荷に直接供給せずに、一般には太陽電池から出力さ
れる電力を一旦蓄電装置に充電し、そしてその充電電力
を定電圧回路で負荷が必要とする一定の電圧に昇圧した
後、負荷に供給するようになされている。かかる太陽電
池式電源装置としては、容量の小さな複数個の蓄電装置
を並列に接続して容量を大きくし、その並列電力を負荷
に供給するものがある。また上記の如き太陽電池式電源
装置においては、負荷が必要とする負荷電圧まで定電圧
回路で昇圧するためには、蓄電装置より定電圧回路に入
力される電圧、すなわち蓄電装置の端子電圧をその負荷
電圧に対して基準値以上にする必要があり、蓄電装置の
端子電圧が基準値以下になって蓄電装置の端子電圧と負
荷電圧との電圧差が大きくなるとうまく昇圧することが
できなくなる。2. Description of the Related Art Conventionally, a solar cell type power supply device used for a self-luminous road tack or a road sign using a light emitting diode or the like directly supplies power output from a solar cell to a load such as a light emitting diode. Instead, the power output from the solar cell is generally once charged in the power storage device, and the charged power is boosted to a constant voltage required by the load by a constant voltage circuit, and then supplied to the load. I have. As such a solar cell type power supply device, there is a type in which a plurality of power storage devices having a small capacity are connected in parallel to increase the capacity, and the parallel electric power is supplied to a load. Further, in the solar battery type power supply device as described above, in order to boost the load voltage required by the load by the constant voltage circuit, the voltage input to the constant voltage circuit from the power storage device, that is, the terminal voltage of the power storage device is used. The load voltage must be equal to or higher than the reference value. If the terminal voltage of the power storage device becomes equal to or lower than the reference value and the voltage difference between the terminal voltage of the power storage device and the load voltage increases, the voltage cannot be boosted well.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、並列に
接続した複数個の蓄電装置の合成電力を負荷に供給する
ものについて、蓄電装置の電力が負荷により消費されて
蓄電装置の端子電圧が基準値以下に低下し、定電圧回路
でうまく昇圧することができなくなった場合でも、蓄電
装置は完全に放電された訳ではなく、定電圧回路でうま
く昇圧することができないが、電力は残されており、こ
の残された電力は有効に消費されていない、と言った問
題がある。However, in the case where the combined power of a plurality of power storage devices connected in parallel is supplied to a load, the power of the power storage device is consumed by the load and the terminal voltage of the power storage device is lower than a reference value. Even if the voltage cannot be boosted well by the constant voltage circuit, the power storage device is not completely discharged and cannot be boosted well by the constant voltage circuit, but the power remains, There is a problem that this remaining power is not being consumed effectively.
【０００４】そこで本発明は、上記の如き問題点を解決
し、蓄電装置に充電された電力を有効に消費できる太陽
電池式電源装置を提供せんとするものである。The present invention has been made to solve the above-mentioned problems and to provide a solar battery type power supply device capable of effectively consuming the electric power charged in the power storage device.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は次のような構成としている。すなわち本発
明に係る太陽電池式電源装置は、太陽電池から出力され
る電力が蓄電回路に充電され、その蓄電回路よりの出力
電圧を定電圧回路に入力し、定電圧回路により一定の電
圧にして負荷に供給させるようになされた太陽電池式電
源装置であって、蓄電回路は蓄電装置が複数個設けられ
ると共に、各蓄電装置にスイッチ回路がそれぞれ直列に
接続され、この各スイッチ回路を開閉制御することによ
り、各蓄電装置の端子電圧が基準値以上の場合は各蓄電
装置を並列接続してその基準値以上の電圧を蓄電回路よ
り出力させ、各蓄電装置の端子電圧が基準値以下の場合
は適宜蓄電装置を直列に接続し、その直列電圧が基準値
以上となるようにしてその基準値以上の電圧を蓄電回路
より出力させるようになされたことを特徴とするもので
ある。In order to achieve the above object, the present invention has the following arrangement. That is, in the solar battery type power supply device according to the present invention, the power output from the solar battery is charged in the power storage circuit, the output voltage from the power storage circuit is input to the constant voltage circuit, and the constant voltage circuit makes the voltage constant. A solar battery type power supply device adapted to be supplied to a load, wherein a plurality of power storage devices are provided in a power storage circuit, and a switch circuit is connected in series to each of the power storage devices, and controls opening and closing of each switch circuit. By this, when the terminal voltage of each power storage device is equal to or higher than the reference value, each power storage device is connected in parallel and a voltage equal to or higher than the reference value is output from the power storage circuit, and when the terminal voltage of each power storage device is equal to or lower than the reference value, A power storage device is appropriately connected in series, and a voltage higher than the reference value is output from the power storage circuit so that the series voltage is equal to or higher than the reference value.
【０００６】なお前記基準値とは、定電圧回路により一
定の電圧に昇圧することのできる入力電圧の範囲におけ
る下限値の電圧であり、負荷が必要とする負荷電圧と定
電圧回路の特性に応じて設定されるが、使用される蓄電
装置の定格電圧が基準値となされていてもよい。定電圧
回路に入力される蓄電回路からの電圧が基準値以上で
は、定電圧回路によって一定の電圧に昇圧することがで
き、基準値以下では安定して昇圧することができなくな
る。The reference value is a lower limit voltage in a range of an input voltage that can be boosted to a constant voltage by a constant voltage circuit, and depends on a load voltage required by a load and characteristics of the constant voltage circuit. However, the rated voltage of the power storage device used may be set as the reference value. If the voltage from the power storage circuit input to the constant voltage circuit is higher than the reference value, the voltage can be boosted to a constant voltage by the constant voltage circuit, and if the voltage is lower than the reference value, the voltage cannot be stably boosted.
【０００７】本発明は、スイッチ回路がそれぞれ直列に
接続された蓄電装置が複数個蓄電回路に設けられてい
る。そしてこの各スイッチ回路を開閉制御することによ
り、充電された各蓄電装置の端子電圧が基準値以上であ
る通常の場合は、各スイッチ回路を開閉制御して各蓄電
装置を並列接続し、その基準値以上の電圧を蓄電回路よ
り出力させ、そしてこの電圧を定電圧回路に入力させ、
負荷電圧まで昇圧させて負荷に供給されるようになされ
ている。また蓄電装置の電力が負荷により消費されて蓄
電装置の端子電圧が基準値以下に低下した場合は、各ス
イッチ回路を開閉制御して適宜各蓄電装置を直列に接続
し、その直列電圧が基準値以上となるようにしてその基
準値以上の電圧を蓄電回路より出力させ、前記と同様に
この電圧を定電圧回路に入力させ、負荷電圧まで昇圧さ
せて負荷に供給されるようになされている。[0007] In the present invention, a plurality of power storage devices each having a switch circuit connected in series are provided in the power storage circuit. By controlling the opening and closing of each switch circuit, in a normal case where the charged terminal voltage of each power storage device is equal to or higher than a reference value, each switch circuit is controlled to open and close to connect the respective power storage devices in parallel. A voltage equal to or higher than the value is output from the storage circuit, and this voltage is input to the constant voltage circuit,
The voltage is raised to the load voltage and supplied to the load. When the power of the power storage device is consumed by the load and the terminal voltage of the power storage device falls below the reference value, each switch circuit is controlled to open and close, and each power storage device is appropriately connected in series. As described above, a voltage equal to or higher than the reference value is output from the power storage circuit, and this voltage is input to the constant voltage circuit in the same manner as described above, boosted to the load voltage, and supplied to the load.
【０００８】すなわち、蓄電装置の端子電圧が基準値以
下になると、または基準値以下の場合は、適宜所定数の
蓄電装置が直列に接続されて基準値以上の電圧が蓄電回
路より出力されるようになされているので、蓄電装置の
電力が消費されて端子電圧が基準値以下になっても、こ
れらの蓄電装置に残されている電力は、直列に接続され
て基準値以上の電圧にして再び蓄電回路より出力される
ことにより有効に消費される。That is, when the terminal voltage of the power storage device becomes equal to or lower than the reference value, or when the terminal voltage is equal to or lower than the reference value, a predetermined number of power storage devices are appropriately connected in series so that a voltage higher than the reference value is output from the power storage circuit. Therefore, even if the power of the power storage device is consumed and the terminal voltage becomes equal to or lower than the reference value, the power remaining in these power storage devices is connected in series to make the voltage equal to or higher than the reference value, and again. It is effectively consumed by being output from the storage circuit.
【０００９】なお本発明においては、蓄電装置に直列に
接続された各スイッチ回路を、蓄電回路よりの出力電圧
または／及び定電圧回路より負荷に供給される負荷側の
電圧を検出し、その検出された電圧に基づいて開閉制御
するのが好ましい。In the present invention, each switch circuit connected in series to the power storage device detects an output voltage from the power storage circuit or / and a load-side voltage supplied to the load from the constant voltage circuit, and detects the voltage. It is preferable to control the opening and closing based on the applied voltage.
【００１０】すなわち蓄電回路よりの出力電圧を検出し
て各スイッチ回路を開閉制御する場合は、蓄電回路より
の出力電圧を出力電圧検出回路より検出すると共に検出
された出力電圧を予め設定された基準値と比較し、蓄電
回路よりの出力電圧が基準値以下になると、すなわち各
蓄電装置の端子電圧が基準値以下になったと判断された
場合は、各スイッチ回路を開閉して蓄電装置を適宜直列
に接続し、蓄電回路よりの出力電圧が基準値以上になる
ように制御すればよい。That is, when opening and closing each switch circuit by detecting the output voltage from the power storage circuit, the output voltage from the power storage circuit is detected by the output voltage detection circuit and the detected output voltage is set to a predetermined reference value. When the output voltage from the power storage circuit becomes equal to or lower than the reference value, that is, when it is determined that the terminal voltage of each power storage device becomes equal to or lower than the reference value, each switch circuit is opened and closed to appropriately connect the power storage device in series. And control is performed so that the output voltage from the power storage circuit becomes equal to or higher than the reference value.
【００１１】また定電圧回路より負荷に供給される負荷
側の電圧を検出して各スイッチ回路を開閉制御する場合
は、定電圧回路より負荷に供給される負荷側の電圧を負
荷電圧検出回路より検出すると共に検出された負荷側の
電圧を予め設定された負荷電圧と比較し、負荷電圧以下
では蓄電回路よりの出力電圧が基準値以下になっている
と判断されるので、負荷電圧以下になると各スイッチ回
路を開閉して前記と同様に蓄電装置を適宜直列に接続
し、蓄電回路よりの出力電圧が基準値以上になるように
制御すればよい。In the case of controlling the opening and closing of each switch circuit by detecting the load side voltage supplied to the load from the constant voltage circuit, the load side voltage supplied to the load from the constant voltage circuit is detected by the load voltage detection circuit. The detected and detected voltage on the load side is compared with a preset load voltage, and when the load voltage is lower than the load voltage, it is determined that the output voltage from the power storage circuit is lower than the reference value. Each of the switch circuits may be opened and closed, the power storage devices may be appropriately connected in series similarly to the above, and control may be performed so that the output voltage from the power storage circuit becomes equal to or higher than the reference value.
【００１２】さらに各スイッチ回路の開閉制御をより正
確に行う場合は、上記蓄電回路よりの出力電圧と定電圧
回路より負荷に供給される負荷側の電圧とを検出し、そ
の検出された両電圧に基づいて、各スイッチ回路を開閉
して蓄電回路よりの出力電圧が基準値以上になるように
制御すればよい。In order to more accurately control the opening and closing of each switch circuit, the output voltage from the power storage circuit and the load voltage supplied to the load from the constant voltage circuit are detected. May be controlled so that the output voltage from the power storage circuit is equal to or higher than the reference value by opening and closing each switch circuit.
【００１３】[0013]
【発明の実施の形態】以下に本発明の実施の形態につき
図面に基づき具体的に説明する。図１は本発明の実施の
一形態を示す回路構成図であり、図２〜４は蓄電回路に
おけるスイッチ回路の動作例を示す回路構成図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention, and FIGS. 2 to 4 are circuit configuration diagrams showing an operation example of a switch circuit in a power storage circuit.
【００１４】図面において、１は太陽電池であり、単結
晶や多結晶の結晶系シリコン太陽電池、非結晶系のアモ
ルフアスシリコン太陽電池、化合物半導体系太陽電池等
の適宜太陽電池が使用され、特に限定されるものではな
い。In the drawings, reference numeral 1 denotes a solar cell, and an appropriate solar cell such as a monocrystalline or polycrystalline crystalline silicon solar cell, an amorphous amorphous silicon solar cell, or a compound semiconductor solar cell is used. It is not limited.
【００１５】２は太陽電池１から出力される電力を充電
するための蓄電回路であり、蓄電装置３が複数個用いら
れ、各蓄電装置３にはスイッチ回路４がそれぞれ直列に
接続されている。なお蓄電装置３は、一般には鉛蓄電池
やＮｉ−Ｃｄ電池等の蓄電池や、電気二重層コンデンサ
ー等のコンデンサーが用いられ、また一般には太陽電池
１の発電量に対して小さい容量のものが用いられ、その
複数個の蓄電装置３の総容量が、ほぼ太陽電池１の発電
量に相当する程度となるようになされるが、特に限定さ
れるものではない。Reference numeral 2 denotes a power storage circuit for charging the power output from the solar cell 1. A plurality of power storage devices 3 are used, and a switch circuit 4 is connected to each power storage device 3 in series. The power storage device 3 generally uses a storage battery such as a lead storage battery or a Ni-Cd battery, or a capacitor such as an electric double layer capacitor, and generally has a capacity smaller than the amount of power generated by the solar cell 1. The total capacity of the plurality of power storage devices 3 is set so as to substantially correspond to the power generation amount of the solar cell 1, but is not particularly limited.
【００１６】５は太陽電池１と蓄電回路２との間に接続
された逆流防止ダイオードであり、太陽電池１から出力
される電圧が蓄電回路２の電圧より低くなる夜間等に、
蓄電回路２から太陽電池１側に電流が逆流するのを防止
するためのものである。Reference numeral 5 denotes a backflow prevention diode connected between the solar cell 1 and the power storage circuit 2, such as at night when the voltage output from the solar cell 1 becomes lower than the voltage of the power storage circuit 2.
This is for preventing a current from flowing backward from the power storage circuit 2 to the solar cell 1 side.
【００１７】６は蓄電回路２と並列に接続された出力電
圧検出回路であり、蓄電回路２からの出力電圧が検出さ
れ、予め設定された基準値と比較される。Reference numeral 6 denotes an output voltage detection circuit connected in parallel with the power storage circuit 2, which detects an output voltage from the power storage circuit 2 and compares it with a preset reference value.
【００１８】７は定電圧回路であり、スイツチング回路
７１、コイル７２、ダイオード７３、コンデンサー７４
により構成されている。定電圧回路７は蓄電回路２から
入力された充電電力の電圧変動をトランジスター等で制
御し、安定化して常に一定の電圧に昇圧して後記の負荷
９に供給するものである。負荷９が必要とする負荷電圧
まで定電圧回路７により昇圧するためには、蓄電回路２
より入力される電圧をその負荷電圧に対して所定の基準
値以上にする必要があり、蓄電回路２よりの電圧が基準
値以下になって負荷電圧との電圧差が大きくなるとうま
く昇圧することができなくなる。前記基準値は負荷９が
必要とする負荷電圧と定電圧回路７の特性に応じて設定
されるが、蓄電装置３の定格電圧に設定されていてもよ
い。Reference numeral 7 denotes a constant voltage circuit, which includes a switching circuit 71, a coil 72, a diode 73, and a capacitor 74.
It consists of. The constant voltage circuit 7 controls the voltage fluctuation of the charging power input from the power storage circuit 2 by a transistor or the like, stabilizes the voltage, constantly boosts the voltage to a constant voltage, and supplies the voltage to a load 9 described later. In order to boost the voltage by the constant voltage circuit 7 to the load voltage required by the load 9, the power storage circuit 2
The input voltage must be equal to or higher than a predetermined reference value with respect to the load voltage. When the voltage from the power storage circuit 2 becomes equal to or lower than the reference value and the voltage difference from the load voltage increases, the voltage can be boosted well. become unable. The reference value is set according to the load voltage required by the load 9 and the characteristics of the constant voltage circuit 7, but may be set to the rated voltage of the power storage device 3.
【００１９】８は負荷電圧検出回路であり、定電圧回路
７より負荷９に供給される負荷側の電圧を検出し、負荷
９を動作させるために負荷９に応じて予め設定された負
荷電圧と比較される。Reference numeral 8 denotes a load voltage detection circuit which detects a load-side voltage supplied from the constant voltage circuit 7 to the load 9, and determines a load voltage set in advance according to the load 9 to operate the load 9. Be compared.
【００２０】そして前記出力電圧検出回路６と負荷電圧
検出回路８とにより、蓄電回路２よりの出力電圧が予め
設定された基準値と比較され、また定電圧回路７より負
荷９に供給される負荷側の電圧が予め設定された負荷電
圧と比較され、これによって前記各スイッチ回路４が開
閉制御される。The output voltage from the power storage circuit 2 is compared with a preset reference value by the output voltage detection circuit 6 and the load voltage detection circuit 8, and the load supplied to the load 9 from the constant voltage circuit 7. The side voltage is compared with a preset load voltage, whereby each of the switch circuits 4 is controlled to open and close.
【００２１】この各スイッチ回路４が開閉制御されるこ
とにより、まず各蓄電装置３は端子電圧が基準値以上の
電圧になるように太陽電池１の電力が充電される。なお
各蓄電装置３は予め並列に接続されて、それらの全蓄電
装置３に同時に充電するようになされていてもよいし、
一の蓄電装置３から他の蓄電装置３へと１個づつ順に太
陽電池１の電力が充電されるようになされていてもよ
い。When each switch circuit 4 is controlled to open and close, first, each power storage device 3 is charged with the electric power of the solar cell 1 so that the terminal voltage becomes equal to or higher than the reference value. Each of the power storage devices 3 may be connected in parallel in advance to charge all the power storage devices 3 at the same time,
The power of the solar cell 1 may be charged from one power storage device 3 to another power storage device 3 one by one.
【００２２】そして充電された蓄電装置３の電力は定電
圧回路７に入力される。この場合、充電された各蓄電装
置３の端子電圧が基準値以上である通常の場合は、各ス
イッチ回路４を開閉制御して各蓄電装置３を並列接続
し、その基準値以上の電圧を蓄電回路２より出力させ、
そしてこの電圧を定電圧回路７に入力させ、負荷電圧ま
で昇圧させて負荷９に供給されるようになされている。
また蓄電装置３の電力が負荷９により消費されて蓄電装
置３の端子電圧が基準値以下に低下した場合は、各スイ
ッチ回路４を開閉制御して適宜各蓄電装置３を直列に接
続し、その直列電圧が基準値以上となるようにしてその
基準値以上の電圧を蓄電回路２より出力させ、前記と同
様にこの電圧を定電圧回路７に入力させ、負荷電圧まで
昇圧させて負荷９に供給されるようになされている。The charged power of the power storage device 3 is input to the constant voltage circuit 7. In this case, in a normal case where the charged terminal voltage of each power storage device 3 is equal to or higher than the reference value, each switch circuit 4 is opened and closed to connect each power storage device 3 in parallel, and the voltage equal to or higher than the reference value is stored. Output from circuit 2,
Then, this voltage is input to the constant voltage circuit 7, the voltage is increased to the load voltage, and the voltage is supplied to the load 9.
When the power of the power storage device 3 is consumed by the load 9 and the terminal voltage of the power storage device 3 falls below the reference value, each switch circuit 4 is controlled to open and close, and each power storage device 3 is connected in series as appropriate. The series voltage is equal to or higher than the reference value, and a voltage equal to or higher than the reference value is output from the power storage circuit 2. This voltage is input to the constant voltage circuit 7, boosted to the load voltage and supplied to the load 9 in the same manner as described above. It has been made to be.
【００２３】９は制御回路を含む発光ダイオード等の負
荷であり、負荷９は定電圧回路７により負荷９に応じて
負荷電圧まで昇圧されて供給された電圧により安定して
動作することができる。Reference numeral 9 denotes a load such as a light emitting diode including a control circuit. The load 9 is boosted to a load voltage by the constant voltage circuit 7 according to the load 9, and can operate stably with the supplied voltage.
【００２４】次に上記の如く出力電圧検出回路６と負荷
電圧検出回路８とにより、開閉制御させたスイッチ回路
４の動作手順の一例を図２〜４により次に説明する。Next, an example of an operation procedure of the switch circuit 4 which is opened and closed by the output voltage detection circuit 6 and the load voltage detection circuit 8 as described above will be described with reference to FIGS.
【００２５】充電時においては、まず第１〜６スイッチ
回路４１〜４６を図２の如く接続することにより、第１
〜４蓄電装置３１〜３４を並列に接続し、全ての第１〜
４蓄電装置３１〜３４について端子電圧が基準値以上に
なるように太陽電池１の電力を同時に充電させる。At the time of charging, first, the first to sixth switch circuits 41 to 46 are connected as shown in FIG.
To 4 power storage devices 31 to 34 are connected in parallel,
The electric power of the solar cell 1 is simultaneously charged so that the terminal voltages of the four power storage devices 31 to 34 are equal to or higher than the reference value.
【００２６】次に充電された電力を負荷９に供給する場
合は、前記充電時と同様にまず図２の如く第１〜６スイ
ッチ回路４１〜４６を接続することにより、並列に接続
した第１〜４蓄電装置３１〜３４の並列電力を出力させ
ることにより、基準値以上の電圧を蓄電回路２より出力
させ、この電圧を定電圧回路７に入力させ、負荷電圧ま
で昇圧させて負荷９に供給させる。Next, when the charged power is supplied to the load 9, the first to sixth switch circuits 41 to 46 are first connected as shown in FIG. By outputting the parallel power of the power storage devices 31 to 34, a voltage equal to or higher than the reference value is output from the power storage circuit 2, and this voltage is input to the constant voltage circuit 7, boosted to the load voltage, and supplied to the load 9. Let it.
【００２７】そしてこの第１〜４蓄電装置３１〜３４の
電力が負荷９により消費され、出力電圧検出回路６と負
荷電圧検出回路８とにより蓄電回路２の出力電圧が基準
値以下になったと判断されると、すなわち全ての第１〜
４蓄電装置３１〜３４について端子電圧が基準値以下に
なったと判断されると、例えば図３の如く第１〜６スイ
ッチ回路４１〜４６を適宜切り換えて第１蓄電装置３１
と第２蓄電装置３２、及び第３蓄電装置３３と第４蓄電
装置３４とを直列に接続し、その直列電圧が基準値以上
となるようにしてその基準値以上の電圧を蓄電回路２よ
り出力させ、定電圧回路７により負荷電圧まで昇圧させ
て負荷９に供給させる。次にこの状態から電力が消費さ
れてさらに蓄電回路２よりの出力電圧が基準値以下にな
ると、再び例えば図４の如く、第１〜第４蓄電装置３１
〜３４を全て直列に接続し、その直列電圧が基準値以上
となるようにして基準値以上の電圧を蓄電回路２よりさ
らに継続して出力させる。The power of the first to fourth power storage devices 31 to 34 is consumed by the load 9, and the output voltage detection circuit 6 and the load voltage detection circuit 8 determine that the output voltage of the power storage circuit 2 has fallen below the reference value. That is, all the first to first
When it is determined that the terminal voltages of the four power storage devices 31 to 34 have become equal to or lower than the reference value, the first to sixth switch circuits 41 to 46 are appropriately switched as shown in FIG.
And the second power storage device 32, and the third power storage device 33 and the fourth power storage device 34 are connected in series, and a voltage higher than the reference value is output from the power storage circuit 2 so that the series voltage is higher than the reference value. Then, the voltage is increased to the load voltage by the constant voltage circuit 7 and supplied to the load 9. Next, when power is consumed from this state and the output voltage from the power storage circuit 2 becomes equal to or lower than the reference value, the first to fourth power storage devices 31 are again returned as shown in FIG.
To 34 are connected in series, and the voltage above the reference value is further continuously output from the power storage circuit 2 so that the series voltage is higher than the reference value.
【００２８】かようにしてまず全ての蓄電装置３の電力
を並列接続で消費し、次に並列接続した蓄電装置３では
基準値以上の電圧を蓄電回路２より出力できなくなった
場合には、蓄電装置３の端子電圧に応じて所定数の蓄電
装置３を適宜選択して基準値以上の電圧になるように直
列に接続することにより、継続して基準値以上の電圧を
蓄電回路２より出力させ、定電圧回路７により負荷電圧
まで昇圧させる。なお上記形態において、蓄電装置３は
４個設けられているが、特にその数は限定されるもので
はない。なおスイッチ回路４に自己保持型接点を使用
し、状態保持に電力の消費を必要としない低消費電力回
路とするのが好ましい。As described above, first, the power of all the power storage devices 3 is consumed in parallel connection. Then, when the power storage device 3 connected in parallel cannot output a voltage higher than the reference value from the power storage circuit 2, By appropriately selecting a predetermined number of power storage devices 3 according to the terminal voltage of the device 3 and connecting them in series so that the voltage is higher than the reference value, the voltage higher than the reference value is continuously output from the power storage circuit 2. , The voltage is increased by the constant voltage circuit 7 to the load voltage. In the above embodiment, four power storage devices 3 are provided, but the number is not particularly limited. Note that it is preferable to use a self-holding contact for the switch circuit 4 and use a low power consumption circuit that does not require power consumption for state holding.
【００２９】[0029]
【発明の効果】本発明によれば、蓄電装置の端子電圧が
基準値以下になると、または基準値以下の場合は、適宜
所定数の蓄電装置が直列に接続されて基準値以上の電圧
が蓄電回路より出力されるようになされているので、蓄
電装置の電力が消費されて端子電圧が基準値以下になっ
ても、これらの蓄電装置に残されている電力は、直列に
接続されて基準値以上の電圧にして再び蓄電回路より出
力されることにより有効に消費される。According to the present invention, when the terminal voltage of the power storage device is equal to or lower than the reference value, or when the terminal voltage is equal to or lower than the reference value, a predetermined number of power storage devices are appropriately connected in series to store the voltage higher than the reference value. Since the power is output from the circuit, even if the power of the power storage device is consumed and the terminal voltage falls below the reference value, the power remaining in these power storage devices is connected in series to the reference value. The power is effectively consumed by setting the above voltage and outputting again from the power storage circuit.
【図１】本発明の実施の一形態を示す回路構成図であ
る。FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention.
【図２】蓄電回路におけるスイッチ回路の動作例を示す
回路構成図である。FIG. 2 is a circuit configuration diagram illustrating an operation example of a switch circuit in a power storage circuit.
【図３】蓄電回路におけるスイッチ回路の他の動作例を
示す回路構成図である。FIG. 3 is a circuit configuration diagram illustrating another operation example of the switch circuit in the power storage circuit.
【図４】蓄電回路におけるスイッチ回路の他の動作例を
示す回路構成図である。FIG. 4 is a circuit configuration diagram showing another operation example of the switch circuit in the power storage circuit.
１ 太陽電池 ２ 蓄電回路 ３ 蓄電装置 ３１ 第１蓄電装置 ３２ 第２蓄電装置 ３３ 第３蓄電装置 ３４ 第４蓄電装置 ４ スイッチ回路 ４１ 第１スイッチ回路 ４２ 第２スイッチ回路 ４３ 第３スイッチ回路 ４４ 第４スイッチ回路 ４５ 第５スイッチ回路 ４６ 第６スイッチ回路 ５ 逆流防止ダイオード ６ 出力電圧検出回路 ７ 定電圧回路 ７１ スイッチング回路 ７２ コイル ７３ ダイオード ７４ コンデンサー ８ 負荷電圧検出回路 ９ 負荷 REFERENCE SIGNS LIST 1 solar cell 2 power storage circuit 3 power storage device 31 first power storage device 32 second power storage device 33 third power storage device 34 fourth power storage device 4 switch circuit 41 first switch circuit 42 second switch circuit 43 third switch circuit 44 fourth Switch circuit 45 Fifth switch circuit 46 Sixth switch circuit 5 Backflow prevention diode 6 Output voltage detection circuit 7 Constant voltage circuit 71 Switching circuit 72 Coil 73 Diode 74 Capacitor 8 Load voltage detection circuit 9 Load
Claims (2)
に充電され、その蓄電回路よりの出力電圧を定電圧回路
に入力し、定電圧回路により一定の電圧にして負荷に供
給させるようになされた太陽電池式電源装置であって、
蓄電回路は蓄電装置が複数個設けられると共に、各蓄電
装置にスイッチ回路がそれぞれ直列に接続され、この各
スイッチ回路を開閉制御することにより、各蓄電装置の
端子電圧が基準値以上の場合は各蓄電装置を並列接続し
てその基準値以上の電圧を蓄電回路より出力させ、各蓄
電装置の端子電圧が基準値以下の場合は適宜蓄電装置を
直列に接続し、その直列電圧が基準値以上となるように
してその基準値以上の電圧を蓄電回路より出力させるよ
うになされたことを特徴とする太陽電池式電源装置。An electric power output from a solar battery is charged in a power storage circuit, an output voltage from the power storage circuit is input to a constant voltage circuit, and a constant voltage is supplied to the load by the constant voltage circuit. A solar-powered power supply,
In the power storage circuit, a plurality of power storage devices are provided, and a switch circuit is connected to each power storage device in series, and by controlling the opening and closing of each switch circuit, when the terminal voltage of each power storage device is equal to or higher than the reference value, A power storage device is connected in parallel and a voltage equal to or higher than the reference value is output from the power storage circuit.If the terminal voltage of each power storage device is equal to or lower than the reference value, the power storage devices are appropriately connected in series, and the series voltage is higher than the reference value. A solar cell type power supply device wherein a voltage equal to or higher than the reference value is output from a power storage circuit.
電圧回路より負荷に供給される負荷側の電圧を検出し、
その検出された電圧に基づいてスイッチ回路を開閉制御
するようになされたことを特徴とする請求項１記載の太
陽電池式電源装置。Detecting an output voltage from a power storage circuit and / or a load-side voltage supplied to a load from a constant voltage circuit;
2. The solar cell type power supply according to claim 1, wherein the switching circuit is controlled to open and close based on the detected voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9198759A JPH1146451A (en) | 1997-07-24 | 1997-07-24 | Solar battery power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9198759A JPH1146451A (en) | 1997-07-24 | 1997-07-24 | Solar battery power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1146451A true JPH1146451A (en) | 1999-02-16 |
Family
ID=16396487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9198759A Pending JPH1146451A (en) | 1997-07-24 | 1997-07-24 | Solar battery power unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1146451A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010239709A (en) * | 2009-03-30 | 2010-10-21 | Japan Research Institute Ltd | Battery controller, battery control method and vehicle |
| JP2011097771A (en) * | 2009-10-30 | 2011-05-12 | Honda Motor Co Ltd | Electric vehicle and power supply control method for the same |
| JP2011114949A (en) * | 2009-11-26 | 2011-06-09 | Mitsubishi Heavy Ind Ltd | Power receiving device and wireless power transmission system |
| JP2011239603A (en) * | 2010-05-12 | 2011-11-24 | Tamura Seisakusho Co Ltd | Charge and discharge system |
| KR101347211B1 (en) * | 2012-05-29 | 2014-01-10 | 주식회사 아이티엠반도체 | Battery system for controling of parallel or serial connection |
-
1997
- 1997-07-24 JP JP9198759A patent/JPH1146451A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010239709A (en) * | 2009-03-30 | 2010-10-21 | Japan Research Institute Ltd | Battery controller, battery control method and vehicle |
| US8928174B2 (en) | 2009-03-30 | 2015-01-06 | The Japan Research Institute, Limited | Battery control apparatus, battery control method, and vehicle |
| JP2011097771A (en) * | 2009-10-30 | 2011-05-12 | Honda Motor Co Ltd | Electric vehicle and power supply control method for the same |
| JP2011114949A (en) * | 2009-11-26 | 2011-06-09 | Mitsubishi Heavy Ind Ltd | Power receiving device and wireless power transmission system |
| US9287717B2 (en) | 2009-11-26 | 2016-03-15 | Mitsubishi Heavy Industries, Ltd. | Power receiving device and wireless power transmission system |
| JP2011239603A (en) * | 2010-05-12 | 2011-11-24 | Tamura Seisakusho Co Ltd | Charge and discharge system |
| KR101347211B1 (en) * | 2012-05-29 | 2014-01-10 | 주식회사 아이티엠반도체 | Battery system for controling of parallel or serial connection |
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