JPS63133840A - Battery charging control system in solar generating system - Google Patents
Battery charging control system in solar generating systemInfo
- Publication number
- JPS63133840A JPS63133840A JP61281454A JP28145486A JPS63133840A JP S63133840 A JPS63133840 A JP S63133840A JP 61281454 A JP61281454 A JP 61281454A JP 28145486 A JP28145486 A JP 28145486A JP S63133840 A JPS63133840 A JP S63133840A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- charge
- solar cells
- charging control
- voltage
- 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
- 238000010248 power generation Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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】
〔産業上の利用分野〕
本発明は多数の太陽電池を具備する太陽光発電システム
において、蓄電池の充電状態に応じて該蓄電池に接続さ
れる太陽電池の数を制御し、蓄電池の適正な充電を図る
ようにした太陽光発電システムの蓄電池充電制御方式に
関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a solar power generation system equipped with a large number of solar cells, in which the number of solar cells connected to a storage battery is controlled according to the state of charge of the storage battery. This invention relates to a storage battery charging control method for a solar power generation system that aims to properly charge the storage battery.
第３図は従来の太陽光発電システムの蓄電池充電制御装
置の構成を示す図である。同図において、１１は太陽電
池、１２は開閉器、１３は蓄電池、１４はＤＣ−ＤＣ（
直流−直流）コンバータ、１５は負荷である。FIG. 3 is a diagram showing the configuration of a storage battery charging control device for a conventional solar power generation system. In the figure, 11 is a solar cell, 12 is a switch, 13 is a storage battery, and 14 is a DC-DC (
15 is a load.
上記構成の太陽光発電システムにおいて、蓄電池１３の
充電制御は開閉器１２を０Ｎ−ＯＦＦすることにより行
なっている。即ち蓄電池１３の端子電圧が所定値以上に
上昇した状態、所謂過充電の状態で開閉器１２をＯＦＦ
とし、蓄電池１３の端子重圧が所定値以下に低下した状
態、所謂過放電の状態で開閉器１２をＯＮするように制
御して充電制御を行なっている。In the solar power generation system having the above configuration, charging control of the storage battery 13 is performed by turning the switch 12 ON-OFF. In other words, the switch 12 is turned off when the terminal voltage of the storage battery 13 rises to a predetermined value or higher, a so-called overcharge state.
Charging control is performed by controlling the switch 12 to be turned on in a state where the terminal pressure of the storage battery 13 has decreased to a predetermined value or less, a so-called overdischarge state.
しかしながら、上記従来のような蓄電池の充電制御では
蓄電池１３への最適な充電が行なえない欠点がある。つ
まり太陽電池１１の電圧変動が大きいため、開閉器１２
の０Ｎ−ＯＦＦ動作が多くなり開閉器１２の接点が消耗
し、その寿命が短くなる。また、電圧安定化のためにＤ
Ｃ−ＤＣフンバータ１４を必要とするため、太陽光発電
システムが高価になるという欠点もあった。However, the conventional storage battery charging control described above has the drawback that the storage battery 13 cannot be optimally charged. In other words, since the voltage fluctuation of the solar cell 11 is large, the switch 12
The ON-OFF operation of the switch 12 increases, and the contacts of the switch 12 are worn out, shortening their lifespan. Also, for voltage stabilization, D
Since the C-DC humbator 14 is required, there is also a drawback that the solar power generation system becomes expensive.
本発明は上述の点に鑑みてなされたもので、ＤＣ−ＤＣ
Ｃコンバータの電圧安定化手段を必要としない安価な太
陽光発電システムで、且つ電圧変動の小さい最適な充電
が可能な太陽光発電システムの蓄１池充電制御方式を提
供することにある。The present invention has been made in view of the above points, and
An object of the present invention is to provide a single battery charging control method for a solar power generation system that is an inexpensive solar power generation system that does not require voltage stabilization means of a C converter, and that allows optimal charging with small voltage fluctuations.
上記問題点を解決するため本発明は、蓄電池を多数の太
陽電池で充電するように構成した太陽光発電システムに
おいて、前記多数の太陽電池を複数に分割し、該分割し
た太陽電池を蓄電池に対して開閉器を介して並列に接続
すると共に、蓄電池の充電状態に応じて蓄電池の充電量
が少ない時は開閉器により多数の太陽電池を該蓄電池に
接続し、充電量が多くなるに従い太陽電池を蓄電池から
切離すように太陽光発電システムの蓄電池充電制御方式
を構成した。In order to solve the above problems, the present invention provides a solar power generation system configured to charge a storage battery with a large number of solar cells, in which the large number of solar cells is divided into a plurality of parts, and the divided solar cells are connected to the storage battery. At the same time, depending on the state of charge of the storage battery, when the amount of charge in the storage battery is low, a large number of solar cells are connected to the storage battery by the switch, and as the amount of charge increases, the solar cells are connected in parallel via a switch. The storage battery charging control method for the solar power generation system was configured to be disconnected from the storage battery.
上記の如く構成することにより、蓄電池の充電状態に応
じて充電が少ない時は開閉器により多数の太陽電池を該
蓄電池に接読し、充電量が多くなるに従い太陽電池を蓄
電池から切離すから、蓄電池の充電制御において、その
端子電圧の変動範囲を狭くすることが可能となる。また
、電圧安定化のためＤＣ−ＤＣコンバータのような電圧
安定化手段が不要となるから太陽光発電システムを安価
に構成できる。By configuring as described above, depending on the state of charge of the storage battery, when the charge is low, a large number of solar cells are connected to the storage battery using the switch, and as the amount of charge increases, the solar cells are disconnected from the storage battery. In charging control of a storage battery, it is possible to narrow the range of fluctuation of its terminal voltage. Further, since voltage stabilization means such as a DC-DC converter is not required for voltage stabilization, the solar power generation system can be constructed at low cost.
以下、本発明の一実施例を図面に基づいて説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明に係る蓄電池充電制御方式を適用する太
陽光発電システムの構成を示す図である。同図において
、１１−、、１１−、・・・・・・１１−０は太陽電池
め総電流容量をＩｍとして、該総電流容量Ｉｍを後述す
るように所定のｔ温容量Ｉｏでｎ分割した太陽電池、１
２−Ｉ、 １２−ｔ・・・・・・１２−１はそれぞれ前
記太陽電池１１−Ｉ＋１ｌ−２・・・・・・１１−ａの
直流電流を０Ｎ−ＯＦＦ制御する開閉器、１３は蓄電池
、１５は負荷、１６は制御回路、１７は前記蓄電池１３
の端子電圧を検出する電圧センサである。FIG. 1 is a diagram showing the configuration of a solar power generation system to which a storage battery charging control method according to the present invention is applied. In the same figure, 11-, 11-, ... 11-0 are the total current capacity of the solar cells Im, and the total current capacity Im is divided into n by a predetermined temperature capacity Io as described later. solar cells, 1
2-I, 12-t...12-1 are switches for controlling the direct current of the solar cells 11-I+1l-2...11-a ON-OFF, respectively, and 13 is a storage battery. , 15 is a load, 16 is a control circuit, 17 is the storage battery 13
This is a voltage sensor that detects the terminal voltage of.
上記構成の太陽光発電システムにおいて、電圧センサ１
７で蓄電池１３の端子電圧から該蓄電池１３の充電状態
を検出し、その充電状態に応じて、制御回路１６は開閉
器１１．．１１．・・・・・・１２−１を制御する。即
ち、充電初期は開閉器１２−１＋１２−１・・・・・・
１２−１を全部ＯＮとし、全部の太陽電池１１−＋ 、
１１−ｔ・・・・・・１１−、、で蓄電池１３を充電
する。蓄電池１３が充電されその端子電圧が上昇するに
従い、例えば開閉器１１．、開閉器１２−８・・・・・
・と順に０ＦＦＩ、、蓄電池１３から太陽電池ｉｆ、、
１１．・・・・・・１１−１を順次切離して行く。In the solar power generation system having the above configuration, the voltage sensor 1
7, the state of charge of the storage battery 13 is detected from the terminal voltage of the storage battery 13, and depending on the state of charge, the control circuit 16 controls the switch 11. ．． 11. ...Controls 12-1. That is, at the beginning of charging, the switches 12-1+12-1...
12-1 are all turned on, and all solar cells 11-+,
11-t...Charges the storage battery 13 with 11-, . As the storage battery 13 is charged and its terminal voltage increases, for example, the switch 11. , switch 12-8...
・In order, 0FFI,, from storage battery 13 to solar cell if,,
11. ...11-1 are separated one by one.
第２図は蓄電池１３の充電時の電流Ｉと端子電圧Ｖとの
関係を示す図である。同図において、■、は定格電圧（
蓄電池１３の場合、単セル電圧と直列セル数で決まる）
である。同図に示すように、蓄電池１３の端子電圧は充
電状態（７０％充電、９０％充電、１１０％充電）に応
じ、同じ充電電流■でも蓄電池１３の端子電圧が異なる
。FIG. 2 is a diagram showing the relationship between the current I and the terminal voltage V during charging of the storage battery 13. In the same figure, ■, is the rated voltage (
In the case of storage battery 13, it is determined by the single cell voltage and the number of series cells)
It is. As shown in the figure, the terminal voltage of the storage battery 13 varies depending on the charging state (70% charged, 90% charged, 110% charged) even with the same charging current (2).
従って充電量が少ないときは大きい充電電流で蓄電池１
３を充電し、充電量が大きくなるに伴い順次充電電流工
の量を小さくなるように制御すると蓄電池１３の端子電
圧の変動範囲が小きくなる。Therefore, when the amount of charge is small, a large charging current is used to charge the storage battery 1.
When the battery 13 is charged and the amount of charging current is controlled to become smaller as the amount of charge increases, the variation range of the terminal voltage of the storage battery 13 becomes smaller.
本実施例では、第２図において、負荷の許容電圧上限値
をＶ。Ｃとし、１１０％充電のもとで該許容電圧上限値
Ｖ。Ｃにて充電きれる充電電流Ｉｏを求め、該充電電流
Ｉｏで太陽電池の総発電寛流容量Ｉｍをｎ分割して上記
太陽電池１ ！、、 １１−。In this embodiment, in FIG. 2, the upper limit of allowable voltage of the load is V. C, and the allowable voltage upper limit V under 110% charging. A charging current Io that can be fully charged at C is determined, and the total power generation current capacity Im of the solar cell is divided by n by the charging current Io, and the solar cell 1! ,, 11-.
・・・・・・１１−０のに温容量を決めている。そして
電圧センサ１７で検出される蓄電池１３の端子電圧が前
記許容電圧上限値Ｖ。Ｃ以上になったら開閉器ｉｌｌ、
１１．・・・・・・１２−ｎを順次開放し、太陽電池１
１． 、１１−ｚ・・・・・・１１−０を順次蓄電池１
３から切離して行く。これにより、蓄電池１３の端子電
圧を許容電圧上限値ｖ０゜以下に抑えることが可能とな
る。...The temperature capacity is determined for 11-0. The terminal voltage of the storage battery 13 detected by the voltage sensor 17 is the allowable voltage upper limit value V. When it becomes C or more, switch ill,
11.・・・・・・Sequentially open 12-n, solar cell 1
1. , 11-z...11-0 are sequentially connected to storage battery 1
Separate from 3. This makes it possible to suppress the terminal voltage of the storage battery 13 to below the allowable voltage upper limit value v0°.
なお、上記例では許容電圧上限値ｖ０゜を１１０％充電
で示したが、アルカリ蓄電池の場合は８０％の充電状態
で求めるとよい。また、許容電圧上限値Ｖ。Ｃは蓄電池
の種類によって所定の値に決定すればよい。Note that in the above example, the allowable voltage upper limit value v0° was shown at 110% charge, but in the case of an alkaline storage battery, it may be determined at 80% charge state. Also, the allowable voltage upper limit value V. C may be determined to a predetermined value depending on the type of storage battery.
以上説明したように本発明によれば、蓄電池の充電状態
に応じて充電量が少ない時は開閉器により多数の太陽電
池を該蓄電池に接続し、充電量が多くなるに従い太陽電
池を蓄電池から切離すように制御するからＤＣ−ＤＣコ
ンバータのような電圧安定化手段を必要としないで、蓄
電池電圧の変動範囲が小さい充電制御を行なうことが可
能となるという優れた効果が得られる。As explained above, according to the present invention, depending on the state of charge of the storage battery, when the amount of charge is low, a large number of solar cells are connected to the storage battery using a switch, and as the amount of charge increases, the solar cells are disconnected from the storage battery. Since the control is carried out so that the voltage is separated, a voltage stabilizing means such as a DC-DC converter is not required, and an excellent effect can be obtained in that charging control can be performed in which the range of variation in the storage battery voltage is small.
第１図は本発明に係る蓄電池充電制御方式を適用する太
陽光発電システムの構成を示す図、第２図は蓄電池の充
電時の電流と端子電圧の関係を示す図、第３図は従来の
太陽光発電システムの蓄電池充電制御装置の構成を示す
図である。
図中、１１．．１１−１・・・・・・１１−ａ・・・・
太陽電池、ｉｌｌ、１！、・・・・・・１２−０・・・
・開閉器、１３・・・・蓄電池、１５・・・・負荷、１
６・・・・制御回路、１７・・・・電圧センサ。Figure 1 is a diagram showing the configuration of a solar power generation system to which the storage battery charging control method according to the present invention is applied, Figure 2 is a diagram showing the relationship between current and terminal voltage when charging a storage battery, and Figure 3 is a diagram showing the relationship between the current and terminal voltage when charging a storage battery. 1 is a diagram showing the configuration of a storage battery charging control device of a solar power generation system. In the figure, 11. ．． 11-1...11-a...
Solar cells, ill, 1! ,...12-0...
・Switch, 13...Storage battery, 15...Load, 1
6...Control circuit, 17...Voltage sensor.
Claims (1)
光発電システムにおいて、前記多数の太陽電池を複数に
分割し、該分割した太陽電池を前記蓄電池に対して開閉
器を介して並列に接続すると共に、蓄電池の充電状態に
応じて蓄電池の充電量が少ない時は前記開閉器により多
数の太陽電池を該蓄電池に接続し、充電量が多くなるに
従い太陽電池を蓄電池から切離すことを特徴とする太陽
光発電システムの蓄電池充電制御方式。In a solar power generation system configured to charge a storage battery with a large number of solar cells, the large number of solar cells is divided into a plurality of parts, and the divided solar cells are connected in parallel to the storage battery via a switch. In addition, according to the state of charge of the storage battery, when the amount of charge of the storage battery is low, a large number of solar cells are connected to the storage battery by the switch, and as the amount of charge increases, the solar cells are disconnected from the storage battery. Storage battery charging control method for solar power generation systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61281454A JPS63133840A (en) | 1986-11-25 | 1986-11-25 | Battery charging control system in solar generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61281454A JPS63133840A (en) | 1986-11-25 | 1986-11-25 | Battery charging control system in solar generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63133840A true JPS63133840A (en) | 1988-06-06 |
Family
ID=17639407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61281454A Pending JPS63133840A (en) | 1986-11-25 | 1986-11-25 | Battery charging control system in solar generating system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63133840A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000175374A (en) * | 1998-12-08 | 2000-06-23 | Sonoda Keiki Kogyo Kk | Power supply for aviation obstruction lamp at power line steel tower |
-
1986
- 1986-11-25 JP JP61281454A patent/JPS63133840A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000175374A (en) * | 1998-12-08 | 2000-06-23 | Sonoda Keiki Kogyo Kk | Power supply for aviation obstruction lamp at power line steel tower |
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