JPS6285648A - Solar power generator - Google Patents
Solar power generatorInfo
- Publication number
- JPS6285648A JPS6285648A JP60223566A JP22356685A JPS6285648A JP S6285648 A JPS6285648 A JP S6285648A JP 60223566 A JP60223566 A JP 60223566A JP 22356685 A JP22356685 A JP 22356685A JP S6285648 A JPS6285648 A JP S6285648A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- output
- solar cell
- solar
- charging
- 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.)
- Granted
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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は蓄″）！池を有する太陽光発電装置Ｋに係り特
に太陽蓄電の出力を常に発電ないし充電に利用しうる蓄
電池充放電保護機構を設けた太陽光発電装置に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a solar power generation device K having a storage battery, and particularly relates to a storage battery charging/discharging protection mechanism that can always use the output of solar storage for power generation or charging. Regarding the installed solar power generation device.
太陽光のエネルギーを利用し電力をつくり出す太陽光発
電装置では、太陽電池の出力が日中し、か取り出せない
ため通常は蓄電池を組込み夜間や悪天候時でも電力が取
り出せるようにしている。蓄電池は負荷が要求する電力
を太陽電池が供給しきれない場合放電して不足分を出力
回路へ供給し、太陽電池出力が負荷需要以上取り出せる
時は充電される。通常蓄電池は一定の容量しかないため
、適正量以上の電力を出し入れさせる過充放電金避け、
蓄電池の劣化消耗を防がねばならない。In photovoltaic power generation devices that use sunlight to generate electricity, the output of solar cells is generated during the day and cannot be extracted, so storage batteries are usually built in so that electricity can be generated at night or during bad weather. The storage battery is discharged when the solar cells cannot supply the power required by the load and supplies the shortfall to the output circuit, and is charged when the solar cell output exceeds the load demand. Normally storage batteries only have a certain capacity, so avoid overcharging and discharging charges that cause more power to be taken in and out than the appropriate amount.
It is necessary to prevent the deterioration and consumption of storage batteries.
従来の過充放電回避方式は、たとえば高橋他編著の［太
陽光発電Ｊ（１９８０，２月発行）第３２８頁に記載さ
れている。これを第３図に示す。太陽光を受光している
太陽電池１から出た成力は、逆流防止ダイオード２を通
って出力安定化装置３で調整されｔ上で負荷４で消費さ
れる。このとき蓄電池５は浮動充電状態にあり、太陽電
池１の出力特性と負荷４の必要電力に応じて充電もしく
は放電動作が定まり、蓄電池５の端子電圧は電圧検出回
路６で監視される。この端子電圧が、蓄′醒池５の過充
電電圧を越えた場合検出回路６は太陽電池出力短絡スイ
ッチ７を導通にし、蓄電池にこれ以上の充電電流を流し
込まないようにする。負荷４への電力供給は、ダイオー
ド２により短絡された太陽電池が切離され、蓄電池５か
ら継続して行なわれるため負荷側から見た場合本構成は
問題は生じない。しかし、この従来例では太陽電池出力
が十分るる場合でも蓄電池５が過充電の時は太陽電池の
出力を利用しない構成となる九め１本来有効に利用され
るべき太陽エネルギーを太陽電池の内部抵抗損失にだけ
供すこととなるため太陽エネルギー効率が悪くなるとい
う難点がめった。また、蓄電池５が過放電となり残存エ
ネルギーが過少となった場合、蓄電池５をとシはずし回
復充電を施さねばならない難点があった。A conventional overcharge/discharge avoidance method is described, for example, in Takahashi et al., editors, [Solar Power Generation J (February, 1980), p. 328. This is shown in FIG. The power output from the solar cell 1 receiving sunlight passes through the backflow prevention diode 2, is adjusted by the output stabilizing device 3, and is consumed by the load 4 at t. At this time, the storage battery 5 is in a floating charging state, and the charging or discharging operation is determined according to the output characteristics of the solar cell 1 and the required power of the load 4, and the terminal voltage of the storage battery 5 is monitored by the voltage detection circuit 6. When this terminal voltage exceeds the overcharge voltage of the storage battery 5, the detection circuit 6 turns on the solar cell output short-circuit switch 7 to prevent any more charging current from flowing into the storage battery. Since the short-circuited solar cell is disconnected by the diode 2 and power is continuously supplied to the load 4 from the storage battery 5, this configuration poses no problem when viewed from the load side. However, in this conventional example, even if the solar battery output is sufficient, when the storage battery 5 is overcharged, the output of the solar battery is not used. The problem was that the efficiency of solar energy deteriorated because it was used only for losses. Further, when the storage battery 5 is over-discharged and the remaining energy becomes too small, there is a drawback that the storage battery 5 must be removed and recovery charging performed.
本発明の目的は、蓄′ε池が過充・放電状態にｂっても
太陽４池と蓄−池及び出力安定化装置間を切離さず、太
陽゛電池の出力を無駄にすることなく有効に利用し、蓄
電池の適正充電状態を維持できる太陽発電装置を提供す
ることにある。The purpose of the present invention is to prevent the solar cell from being disconnected from the storage battery and the output stabilizing device even if the storage battery is overcharged or discharged, and to prevent the output of the solar battery from being wasted. It is an object of the present invention to provide a solar power generation device that can be used effectively and maintain an appropriate state of charge of a storage battery.
本発明は、太陽発電装置の太陽電池と出力安定化装置間
をつなぐ逆流防止ダイオードをはさみ、蓄電池入出力回
路を設け、蓄電池の端子電圧に応じてこの入出力回路を
入切する。すなわちｓｌに池が適正充電の時は逆流防止
ダイオードと出力安定化装置の接続点と蓄電池とを充放
電自由の接点で結び、蓄゛亀池が過充電の時は前記接点
のかわりに同じ箇所を蓄電池数′醒のみ許容する回路で
結び。The present invention provides a storage battery input/output circuit by sandwiching a backflow prevention diode that connects the solar cell of a solar power generation device and an output stabilizing device, and turns this input/output circuit on and off according to the terminal voltage of the storage battery. In other words, when the SL battery is properly charged, connect the connection point of the backflow prevention diode and output stabilization device to the storage battery using a contact that can be freely charged and discharged, and when the storage battery is overcharged, connect the same point instead of the above contact. Connect with a circuit that allows only the number of storage batteries to rise.
蓄電池が過放電の時は逆流防止ダイオードと太陽電池の
接続点と蓄電池とを蓄電池充電のみ許容する回路で結ぶ
。これにより、蓄電池が適正充電の時は、浮動充電状態
に維持されかつ逆流防止ダイオードと介して太陽電池と
接続するため太陽電池の出力が低下しても蓄電池の出力
が太陽電池へ流れ込むことはない。蓄を池が過充電の時
は電力は蓄電池から出力安定化装置へ流れ、蓄電池がそ
れ以上充電されることはなく、過放電の時は太陽電池か
ら蓄電池へ流れるだけでそれ以上放電することはなくな
り、いずれのケースでも太陽電池は負荷又は蓄電池へ発
１！ｍ力を供給することができるようにしたものである
。When the storage battery is over-discharged, a circuit that only allows charging of the storage battery connects the connection point between the backflow prevention diode and the solar cell and the storage battery. As a result, when the storage battery is properly charged, it is maintained in a floating charge state and connected to the solar cell through a backflow prevention diode, so even if the output of the solar cell decreases, the output of the storage battery will not flow into the solar cell. . When the storage battery is overcharged, power flows from the storage battery to the output stabilization device, and the storage battery is no longer charged. When the storage battery is overcharged, power only flows from the solar battery to the storage battery, and no further discharge occurs. In either case, the solar cell emits electricity to the load or storage battery! It is designed to be able to supply m force.
以下１本発明の一実施例を第１図に説明する。 An embodiment of the present invention will be described below with reference to FIG.
太陽′電池１と出力安定化装置３は逆流防止ダイオード
２を介して接続され、主回路を構成し、安定化装置３は
とり込んだ電力を負荷４へ供給する。The solar cell 1 and the output stabilizing device 3 are connected via a backflow prevention diode 2 to form a main circuit, and the stabilizing device 3 supplies the taken-in electric power to the load 4.
蓄電池５は通常据置形鉛蓄電池を用い、切換器８と、出
力回路９１，９２．９３を介し太陽電池１゜出力安定化
装置３と並列に接続される。出力回路９１は蓄電池５と
主回路とをダイオード２の出力側において直結し、出力
回路９２は蓄電池から出力のみ取出せるように蓄電池出
力方向を順方向とするダイオードを介して主回路に接続
する。出力回路９３Ｆｉ蓄電池入力のみ得られるように
蓄電池入力方向を順方向とするダイオードを介して主回
路に接続する。出力回路９１，９２，９３の切換えは、
蓄電池５の端子電圧を電圧検出器６で監視し過充電、適
正充電、過放電に応じた電圧＠を検出してそのつど切換
器８を動作させて実現する。The storage battery 5 is usually a stationary lead-acid battery, and is connected in parallel to the solar cell 1° output stabilizing device 3 via the switching device 8 and output circuits 91, 92, and 93. The output circuit 91 directly connects the storage battery 5 and the main circuit at the output side of the diode 2, and the output circuit 92 is connected to the main circuit via a diode whose forward direction is the output direction of the storage battery so that only the output can be extracted from the storage battery. Output circuit 93Fi is connected to the main circuit via a diode with the storage battery input direction as the forward direction so that only the storage battery input can be obtained. The switching of the output circuits 91, 92, 93 is as follows:
This is realized by monitoring the terminal voltage of the storage battery 5 with a voltage detector 6, detecting voltages corresponding to overcharging, proper charging, and overdischarging, and operating the switch 8 each time.
すえ置型鉛蓄電池は１セル当り定格電圧ＺＯＶ。Stand-alone lead-acid batteries have a rated voltage of ZOV per cell.
過充電電圧！６〜３．０Ｖ過放電電圧１．６〜１．８
Ｖであるので、切換器８の切換基準電圧は上記電圧を、
セル直列倍した値に設定し、該端子電圧が過充奄榔過放
電設定゛眠圧内にある時は出力回路９１と蓄電池５を接
続し、浮動充電状態に維持し、充放電を自由に行うもの
とする。該端子電圧が過充電設定値を越えた場合は切換
器８は出力回路９２へ蓄電池５との接続を切換える。こ
れにより蓄電池５は太陽電池１からの電流は流れ込めず
、また蓄１！池５の放電電流は逆流防止ダイオード２に
より太陽電池１への流入が阻止され、太陽電池１の出力
、蓄電池５の出力はともに出力安定化装置３へ流れ込む
。したがって、蓄電池５が過充電であっても、蓄電池端
子電圧が太陽電池開放電圧金上回らぬ限り太陽電池１か
ら出力電流がとり出せ、太陽電池１で受光した太陽光エ
ネルギーが最大限利用できる。該端子電圧が過放電設定
値を下回った場合は切換器８は出力回路９３へ蓄電池と
の接続を切換える。これにより蓄電池５は主回路へ放′
直電流が流れ出せなくなり、太陽電池１の出力電流が充
電電流として蓄電池へ流れ込む上１日中太陽電池が高出
力のときは充電しつつ負荷への電力供給が実現可能でお
る。出力安定化装置との電流分配は、出力安定化装置の
入力電圧許容範囲を蓄電池過放電設定値以下に確保して
おくことにより蓄電池だけに太陽電池出力電流が向わぬ
ようにする。第２図に示すように、蓄電池充電器１０を
用いて積極的に回復充電を実施する場合も、出力回路９
３につなげることにより、太陽電池出力を利用しかつ蓄
電池を装置から切離さない状態で回復充電が可能である
。しかも、出力回路９３を逆流防止ダイオード２の入力
側に接続し九ことでダイオード電圧降下分の電力損失を
出力回路９３だけにとどめ、充電時のエネルギーロスの
低減を実現できる。Overcharge voltage! 6~3.0V over discharge voltage 1.6~1.8
Since the switching reference voltage of the switching device 8 is the above voltage,
When the terminal voltage is within the over-charge and over-discharge setting (sleep pressure), the output circuit 91 and the storage battery 5 are connected to maintain the floating charge state, allowing free charging and discharging. Assumed to be performed. When the terminal voltage exceeds the overcharge set value, the switch 8 switches the connection with the storage battery 5 to the output circuit 92. As a result, the current from the solar cell 1 cannot flow into the storage battery 5, and the storage battery 5 also stores 1! The discharge current of the battery 5 is prevented from flowing into the solar cell 1 by the backflow prevention diode 2, and both the output of the solar cell 1 and the output of the storage battery 5 flow into the output stabilizing device 3. Therefore, even if the storage battery 5 is overcharged, an output current can be extracted from the solar cell 1 as long as the storage battery terminal voltage does not exceed the solar cell open circuit voltage, and the sunlight energy received by the solar cell 1 can be utilized to the maximum extent. When the terminal voltage falls below the overdischarge setting value, the switch 8 switches the connection to the storage battery to the output circuit 93. As a result, the storage battery 5 is discharged to the main circuit.
Direct current cannot flow, and the output current of the solar cell 1 flows into the storage battery as a charging current, and when the solar cell has a high output all day long, it is possible to supply power to the load while charging. For current distribution with the output stabilizing device, ensure that the allowable input voltage range of the output stabilizing device is below the storage battery overdischarge setting value to prevent the solar cell output current from being directed only to the storage battery. As shown in FIG. 2, even when actively carrying out recovery charging using the storage battery charger 10, the output circuit 9
3, it is possible to perform recovery charging using the solar cell output without disconnecting the storage battery from the device. Moreover, by connecting the output circuit 93 to the input side of the backflow prevention diode 2, the power loss due to the diode voltage drop is limited to the output circuit 93, thereby reducing energy loss during charging.
本発明によれば、蓄電池が過充電にある場合でも太陽電
池を短絡せずに済み、太陽電池出力と過充電にある蓄電
池の出力を負荷へ供給でき、また蓄電池が過放電にある
場合も蓄電池を主回路から切離さずに、太陽電池出力を
負荷へ供給する一方で充電電流として蓄電池へとり込め
る。さらに外部からの蓄１１ｔ池回復充電も太陽電池出
力を蓄電池にとり込みつつ可能とできるので、システム
トシて太陽電池出力を有効に利用しつつ蓄電池の過充・
放電保護を行なえる効果がめる。According to the present invention, even when the storage battery is overcharged, there is no need to short-circuit the solar cell, and the output of the solar cell and the output of the overcharged storage battery can be supplied to the load. The solar cell output can be supplied to the load without being disconnected from the main circuit, and can be taken into the storage battery as charging current. Furthermore, since recovery charging of the 11 t storage battery from outside is possible while incorporating the solar battery output into the storage battery, the system can efficiently utilize the solar battery output while overcharging and charging the storage battery.
The effect of providing discharge protection can be seen.
第１図は本発明の太陽光発電装置のブロック図、第２図
は本発明の太陽光発電装置に蓄電池充電器を接続した状
態を示すブロック図、第３図は従来の太陽光発電装置の
ブロック図。
１・・・太陽電池、２・・・逆流防止ダイオード％３・
・・出力安定化装置、４・・・負荷、５・・・蓄電池、
６・・・蓄電池端子電圧検出回路、７・・・太陽電池出
力短絡スイッチ、８・・・切換器、９１，９２．９３・
・・出力回路、１０・・・蓄電池充電器。Fig. 1 is a block diagram of a solar power generation device of the present invention, Fig. 2 is a block diagram showing a state in which a storage battery charger is connected to the solar power generation device of the present invention, and Fig. 3 is a block diagram of a conventional solar power generation device. Block Diagram. 1...Solar cell, 2...Backflow prevention diode%3.
...output stabilizing device, 4...load, 5...storage battery,
6...Storage battery terminal voltage detection circuit, 7...Solar cell output short circuit switch, 8...Switcher, 91,92.93.
... Output circuit, 10... Storage battery charger.
Claims (1)
出力安定化装置から構成されている太陽光発電装置にお
いて、前記太陽電池と出力安定化装置間に太陽電池から
出力安定化装置へ向う方向を順方向として接続するダイ
オードを設けるとともに、該ダイオード入力側と蓄電池
間に、ダイオード入力側から蓄電池へ向う方向を順方向
として接続された蓄電池入力回路と、該ダイオード出力
側から蓄電池へ向う方向を逆方向として接続された蓄電
池出力回路と、該出力回路と並列に接続されたスイッチ
から成り、かつ蓄電池の充放電状態に応じてこれら入出
力回路の切り換えを行い、発電及び充放電方向と逆方向
の導通を阻止する特性を有する蓄電池充放電保護機構を
設けたことを特徴とする太陽光発電装置。1. In a solar power generation device consisting of a solar cell, a storage battery coupled to the solar cell, and an output stabilizing device, there is a space between the solar cell and the output stabilizing device in the direction from the solar cell to the output stabilizing device. a storage battery input circuit connected between the diode input side and the storage battery with the direction from the diode input side to the storage battery as the forward direction, and a storage battery input circuit connected with the direction from the diode output side to the storage battery as the forward direction. It consists of a storage battery output circuit connected in the opposite direction and a switch connected in parallel with the output circuit, and these input/output circuits are switched according to the charging/discharging state of the storage battery, and the power generation and charging/discharging directions are reversed. 1. A solar power generation device characterized by being provided with a storage battery charging/discharging protection mechanism having a characteristic of preventing conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60223566A JPH0655010B2 (en) | 1985-10-09 | 1985-10-09 | Solar power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60223566A JPH0655010B2 (en) | 1985-10-09 | 1985-10-09 | Solar power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6285648A true JPS6285648A (en) | 1987-04-20 |
| JPH0655010B2 JPH0655010B2 (en) | 1994-07-20 |
Family
ID=16800166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60223566A Expired - Lifetime JPH0655010B2 (en) | 1985-10-09 | 1985-10-09 | Solar power generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0655010B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295936A (en) * | 1985-10-21 | 1987-05-02 | カシオ計算機株式会社 | Source circuit using solar battery |
-
1985
- 1985-10-09 JP JP60223566A patent/JPH0655010B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295936A (en) * | 1985-10-21 | 1987-05-02 | カシオ計算機株式会社 | Source circuit using solar battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0655010B2 (en) | 1994-07-20 |
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