JPH0295142A - Charge controller for solar light generating system - Google Patents
Charge controller for solar light generating systemInfo
- Publication number
- JPH0295142A JPH0295142A JP63243427A JP24342788A JPH0295142A JP H0295142 A JPH0295142 A JP H0295142A JP 63243427 A JP63243427 A JP 63243427A JP 24342788 A JP24342788 A JP 24342788A JP H0295142 A JPH0295142 A JP H0295142A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- battery
- solar cells
- switches
- control device
- 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 11
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、複数の太陽電池を用いて太陽電池による電力
を蓄電池に充電するシステムに関し、特に保守の回数を
減らした太陽光発電システムの充電制御装置に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a system that uses a plurality of solar cells to charge a storage battery with electricity generated by the solar cells, and in particular, a charging system for a solar power generation system that reduces the number of maintenance operations. Regarding a control device.
（従来の技術）
太陽電池を電源として負荷に電力を供給する太陽光発電
装置は、通常太陽電池を複数群に分け、それぞれ逆流防
止用ダイオードを介して蓄電池に接続し、この蓄電池に
充電した後に安定した電圧を負荷に供給するようにシス
テムが構成されている。(Prior art) A solar power generation device that supplies power to a load using solar cells as a power source usually divides the solar cells into multiple groups, each of which is connected to a storage battery via a backflow prevention diode, and after charging the storage battery. The system is configured to provide a stable voltage to the load.
第３図は、このようなシステムの一例を示すブロック図
である。第３図において、Ｐｖ、〜Ｐｖ４は複数群に分
かれて設置された太陽電池、Ｒｙ＋〜ＲＹ４は各太陽電
池ＰＶ１〜Ｐｖ４と蓄電池１１間に設けられた機械ラッ
チ式リレーであり、それぞれが逆流防止用ダイオード１
２ａ＝１２ｄを介して太陽電池Ｐｖ〜Ｐｖ４によって発
電された電力を蓄電池１１に充電するように配置してい
る。第３図中、１３は負荷、１４は蓄電池１１の端子電
圧を検知してリレーＲＹ＋〜Ｒｙ４の開閉を制御する制
御手段であり、この制御手段１４は、リレーＲＹ＋〜Ｒ
Ｙ ４の開閉回数を平均化するように制御する。FIG. 3 is a block diagram illustrating an example of such a system. In Fig. 3, Pv, ~Pv4 are solar cells installed in multiple groups, and Ry+~RY4 are mechanical latching relays installed between each solar cell PV1~Pv4 and the storage battery 11, each of which prevents backflow. diode 1
The storage battery 11 is arranged to be charged with power generated by the solar cells Pv to Pv4 via 2a=12d. In FIG. 3, 13 is a load, and 14 is a control means that detects the terminal voltage of the storage battery 11 and controls the opening and closing of relays RY+ to Ry4.
Control is performed to average the number of times Y4 is opened and closed.
即ち、前記制御手段１４は、蓄電池１１の端子電圧を検
知して所定値以上となったときに蓄電池１１から現在接
続されている太陽電池ＰＶを切り離し、蓄電池１１の端
子電圧が所定値以下となったときに内蔵されたリングカ
ウンタで次の太陽電池ｐＶ（ｎ＋＋１に接続するように
構成されていた（例えば特願昭６２−２３１４０９号参
照）。That is, the control means 14 detects the terminal voltage of the storage battery 11 and disconnects the currently connected solar cell PV from the storage battery 11 when the terminal voltage of the storage battery 11 becomes equal to or higher than a predetermined value. The built-in ring counter was configured to connect to the next solar cell pV(n++1) (for example, see Japanese Patent Application No. 62-231409).
（発明が解決しようとする問題点）
ところが、近時、太陽電池の価格低下により、大型の太
陽電池を採用する傾向にあり、太陽電池の特性自体に頼
った電流制限では、電流が大きくなりすぎる傾向となっ
てきた。また、蓄電池のメインテナンス上の問題から大
容量シール型電池なども商品化されてきたが、シール型
電池は密閉構造で過充電により発生した水素と酸素は内
部で水に戻されなければならない。このため、この能力
を超える過度の過充電は内圧が上昇して危険であり、蓄
電池の寿命を短くすることになるので制限されるべきで
ある。また、上述のような現象は、電池の原理や電池の
能力で異なるが、いずれにしても補水などによってメイ
ンテナンスできる従来形電池より制限が大きく、その対
策も必要となりつつある。(Problem to be solved by the invention) However, in recent years, as the price of solar cells has declined, there has been a trend to use larger solar cells, and current limiting that relies on the characteristics of the solar cells themselves will cause the current to become too large. This has become a trend. In addition, high-capacity sealed batteries have been commercialized due to storage battery maintenance issues, but sealed batteries have a sealed structure and the hydrogen and oxygen generated by overcharging must be returned to water inside. For this reason, excessive overcharging that exceeds this capacity is dangerous due to an increase in internal pressure and shortens the life of the storage battery, and should be restricted. Further, although the above-mentioned phenomenon differs depending on the principle of the battery and the capacity of the battery, in any case, it is more limited than conventional batteries that can be maintained by refilling with water, and countermeasures are becoming necessary.
本発明は、このような背景のもとに案出されたものであ
り、太陽光発電システムに複数の大型の太陽電池と大容
量シール型蓄電池を採用した場合でも太陽電池の起電力
を安定して蓄電池に充電することができる充電制御装置
を提供することを目的とするものである。The present invention was devised against this background, and is capable of stabilizing the electromotive force of solar cells even when multiple large solar cells and large-capacity sealed storage batteries are used in a solar power generation system. The object of the present invention is to provide a charging control device that can charge a storage battery.
（問題点を解決するための手段）
本発明によれば、複数の太陽電池と、該太陽電池の電力
を充電する蓄電池と、前記各太陽電池と蓄電池との闇に
設けられた複数の開閉器と、該複数の開閉器の開閉回数
を平均化して各開閉器の開閉を行わせるための開閉器制
御装置とからなり、該開閉器制御装置は、前記蓄電池の
端子電圧と充電電流を検出して前記各開閉器を開閉制御
することを特徴とする太陽光発電システムの充電制御装
置が提供される。(Means for Solving the Problems) According to the present invention, a plurality of solar cells, a storage battery for charging the power of the solar cells, and a plurality of switches provided between each of the solar cells and the storage battery are provided. and a switch control device for opening and closing each switch by averaging the number of openings and closings of the plurality of switches, and the switch control device detects the terminal voltage and charging current of the storage battery. There is provided a charging control device for a solar power generation system, which controls opening and closing of each of the switches.
（実施例） 以下、本発明を添付図面に基づき詳細に説明する。(Example) Hereinafter, the present invention will be explained in detail based on the accompanying drawings.
第１図は、本発明に係わる太陽光発電装置の制御装置の
一実施例を説明するためのブロック図である。FIG. 1 is a block diagram for explaining one embodiment of a control device for a solar power generation device according to the present invention.
Ｐｖ１〜Ｐｖ４は複数群にわかれて設置された太陽電池
、Ｒｆｆ＋〜ＲＹ４は各太陽電池ｐｖ、〜ｐｖ４と蓄電
池１１間に設けられた機械ラッチ式リレーであり、それ
ぞれが逆流防止ダイオード１２−１〜１２−４を介して
太陽電池ＰＶ＋〜ＰＶ４によって発電された電力を蓄電
池１１に充電するように配設されている。１３は負荷、
１４は蓄電池１１の端子電圧を検出してリレーＲＹ＋〜
Ｒ）＋＋の開閉を制御するための制御手段であり、該制
御手段１４は、リレーＲｙｌ〜Ｒｙａの開閉回数を平均
化するように制御する。Pv1 to Pv4 are solar cells installed in multiple groups, Rff+ to RY4 are mechanical latching relays provided between each solar cell pv, ~pv4 and the storage battery 11, and each is a backflow prevention diode 12-1 to The storage battery 11 is arranged to be charged with power generated by the solar cells PV+ to PV4 via the solar cells 12-4. 13 is load,
14 detects the terminal voltage of the storage battery 11 and connects the relay RY+~
This is a control means for controlling the opening and closing of R)++, and the control means 14 controls so as to average the number of times the relays Ryl to Rya are opened and closed.
前記蓄電池１１の端子部には、充電電流を検知するため
の電流センサ２６が設けられている。A current sensor 26 for detecting charging current is provided at a terminal portion of the storage battery 11.
第２図に基づきリレーＲｙ＋〜Ｒｙ４の制御をさらに詳
しく説明する。The control of relays Ry+ to Ry4 will be explained in more detail based on FIG.
制御手段１４は、２つのリングカウンタ＋５．１６、Ａ
ＮＤゲート回路１７．１’８、ＯＲゲート回路】９、タ
イミング信号発生回路２０．２１ 、蓄電池１１の電圧
ラインからセット電圧及びリセット電圧を検知する電圧
センサ２２．２３、及び電流検出回路２４とから構成さ
れている。The control means 14 has two ring counters +5.16, A
ND gate circuit 17.1'8, OR gate circuit] 9, timing signal generation circuit 20.21, voltage sensor 22.23 that detects the set voltage and reset voltage from the voltage line of storage battery 11, and current detection circuit 24. It is configured.
電圧センサ２２は、蓄電池１１の電圧レベルを検出し、
電流検出回路２４は、電流センサ２６からの信号に基づ
いて蓄電池１１への充電電流を検出する。この電圧セン
サ２２の出力信号と電流検出回路２４の出力信号をＯＲ
ゲート回路２５に入力する。Voltage sensor 22 detects the voltage level of storage battery 11,
The current detection circuit 24 detects the charging current to the storage battery 11 based on the signal from the current sensor 26. The output signal of this voltage sensor 22 and the output signal of the current detection circuit 24 are ORed.
It is input to the gate circuit 25.
太陽電池Ｐｖ１〜Ｐｖ４の切り離しを必要とするときに
、タイミング信号発生回路２０からの出力とＯＲゲート
回路２５の出力とのアンドをとりＡＮＤゲート回路１７
をを介してリングカウンタ１５にカウントパルスを出力
する。リングカウンタ１５はリレーＲＹ＋〜Ｒｙ４のセ
ット信号を出力するためのものでリレーＲＹ＋〜Ｒｙ４
がサイクリックにセットされるようにセット信号が出力
される。今、蓄電池１１の電圧が６□
過充電防止回路の設定電圧（セット電圧）になるか、又
は充電電流が設定値になると、電圧センサ２２か電流検
出回路２４がこれを検知し、リングカウンタ１５にカウ
ント信号を送り、リレースイッチＲＹがセット（開放）
され、太陽電池Ｐｖ、が切り離される。蓄電池１１の電
圧が上昇して過充電防止の設定電圧に達するか、充電電
流が設定値に達すればさらにカウント信号がリングカウ
ンタ５に送られ、リレースイッチＲｙ２がセットされ太
陽電池Ｐｖ２が切り離される。When it is necessary to disconnect the solar cells Pv1 to Pv4, the output from the timing signal generation circuit 20 and the output of the OR gate circuit 25 are ANDed and the AND gate circuit 17
A count pulse is output to the ring counter 15 via. Ring counter 15 is for outputting a set signal for relays RY+ to Ry4.
A set signal is output so that the is set cyclically. Now, when the voltage of the storage battery 11 reaches the set voltage (set voltage) of the overcharge prevention circuit or the charging current reaches the set value, the voltage sensor 22 or the current detection circuit 24 detects this, and the ring counter 15 Sends a count signal to , and relay switch RY is set (open)
Then, the solar cell Pv is separated. When the voltage of the storage battery 11 rises and reaches the set voltage for overcharging prevention, or when the charging current reaches the set value, a count signal is further sent to the ring counter 5, the relay switch Ry2 is set, and the solar cell Pv2 is disconnected.
このようにリングカウンタ１５によりサイクリックに各
リレースイッチＲｙｌ〜Ｒｙ４がセットされる。In this way, the ring counter 15 cyclically sets each of the relay switches Ryl to Ry4.
一方、蓄電池１１の電圧がリセット（閉じる）電圧にな
ると電圧センサ２３がこれを検知し、ＡＮＤ回路１８に
信号を送り、セット信号が出ている時のみＡＮＤ回路１
８よりカウント信号がリングカウンタ１６に送られ、リ
レースイッチＲｙｌから順にサイクリックにリセットさ
れる。On the other hand, when the voltage of the storage battery 11 reaches the reset (close) voltage, the voltage sensor 23 detects this and sends a signal to the AND circuit 18, and only when the set signal is output, the AND circuit 1
8, a count signal is sent to the ring counter 16, which is cyclically reset in order from the relay switch Ryl.
以上のように、サイクリックにリレースイッチＲｙｌ〜
Ｒｙ４のＯＮ、ＯＦＦが行われるため、リレースイッチ
の開閉回数が平均化される。As mentioned above, the relay switch Ryl ~
Since Ry4 is turned on and off, the number of times the relay switch is opened and closed is averaged.
第２図中、２７はフィルタ回路である。このように、電
流検出センサ２６と電流検出回路２４との間に、フィル
タ回路２７を設けると、蓄電池１１の分極作用のために
短時間低い電圧でも大きな電流が流れる時間があるが、
コンデンサに一時的な大電流を充電することにより、こ
のような短時間の大電流には応答しないようにすること
ができ、システム全体を安定して作動させることができ
る。In FIG. 2, 27 is a filter circuit. In this way, when the filter circuit 27 is provided between the current detection sensor 26 and the current detection circuit 24, there is a time when a large current flows even at a low voltage for a short time due to the polarization effect of the storage battery 11.
By temporarily charging the capacitor with a large current, it is possible to prevent the capacitor from responding to such a short-term large current, and the entire system can operate stably.
なお、上記実施例は、本発明を実施するための一例に過
ぎず、リングカウンタを用いて別の回路構成をとっても
よいし、またマイクロコンピュータを用いて各リレース
イッチの閉器数を記憶させ、開閉回数の少ないものから
使用していくこともできる。Note that the above embodiment is only an example for implementing the present invention, and a different circuit configuration may be used using a ring counter, or a microcomputer may be used to store the number of closed connections of each relay switch. You can also start using items that are opened and closed less often.
（発明の効果）
以上のように、本発明に係わる太陽光発電システムの充
電制御装置によれば、複数の太陽電池と、該太陽電池の
電力を充電する蓄電池と、前記各太陽電池と蓄電池との
間に設けられた複数の開閉器と、該複数の開閉器の開閉
回数を平均化して各開閉器の開閉を行わせるための開閉
器制御装置とからなり、該開閉器制御装置は、前記蓄電
池の端子電圧と充電電流を検出して前記各開閉器を開閉
制御することから、太陽電池群に接続されたリレースイ
ッチの開閉回数を平均化するように制御するのでリレー
スイッチの寿命が均一化され、保守点検が容易になると
共に、蓄電池の容量に比して大きな太陽電池を使用した
場合でも、蓄電池を完全に保護することができ一蓄電池
の寿命が増大して蓄電池自体の保守も容易になる太陽光
発電システムの充電制御装置を提供できる。(Effects of the Invention) As described above, according to the charging control device for a solar power generation system according to the present invention, a plurality of solar cells, a storage battery for charging the power of the solar cells, and a plurality of solar cells and storage batteries are provided. The switch control device includes a plurality of switches provided between the switches and a switch control device for opening and closing each switch by averaging the number of times of opening and closing of the plurality of switches. Since the terminal voltage and charging current of the storage battery are detected to control the opening and closing of each of the switches, the relay switches connected to the solar cell group are controlled to average the number of times they are opened and closed, which equalizes the lifespan of the relay switches. This makes maintenance and inspection easier, and even when using solar cells that are larger than the capacity of the storage battery, the storage battery can be completely protected, increasing the lifespan of the storage battery and making maintenance of the storage battery itself easier. It is possible to provide a charging control device for a solar power generation system.
第１図は本発明に係わる太陽光発電システムの充電制御
装置の構成の概略を示すブロック図、第２図は制御装置
部分の構成の一例を示す回路図、第３図は従来の太陽光
発電システムを示すブロック図である。
Ｒｙｌ〜Ｒｙ４ 、リレースイッチFig. 1 is a block diagram showing the outline of the configuration of the charging control device of the solar power generation system according to the present invention, Fig. 2 is a circuit diagram showing an example of the configuration of the control device part, and Fig. 3 is a conventional photovoltaic power generation system. FIG. 1 is a block diagram showing the system. Ryl~Ry4, relay switch
Claims (2)
蓄電池と、前記各太陽電池と蓄電池との間に設けられた
複数の開閉器と、該複数の開閉器の開閉回数を平均化し
て各開閉器の開閉を行わせるための開閉器制御装置とか
らなり、該開閉器制御装置は、前記蓄電池の端子電圧と
充電電流を検出して前記各開閉器を開閉制御することを
特徴とする太陽光発電システムの充電制御装置。(1) A plurality of solar cells, a storage battery that charges the power of the solar cells, a plurality of switches provided between each of the solar cells and the storage battery, and an average of the number of times the switches are opened and closed. and a switch control device for opening and closing each switch, and the switch control device detects terminal voltage and charging current of the storage battery to control opening and closing of each switch. Charging control device for solar power generation system.
充電電流検出器と前記開閉器制御装置との間に、フィル
タ回路を設けたことを特徴とする特許請求の範囲第１項
に記載の太陽光発電システムの充電制御装置。(2) A charging current detector is provided at a terminal portion of the storage battery, and a filter circuit is provided between the charging current detector and the switch control device. A charging control device for the solar power generation system described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63243427A JPH0295142A (en) | 1988-09-28 | 1988-09-28 | Charge controller for solar light generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63243427A JPH0295142A (en) | 1988-09-28 | 1988-09-28 | Charge controller for solar light generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0295142A true JPH0295142A (en) | 1990-04-05 |
Family
ID=17103712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63243427A Pending JPH0295142A (en) | 1988-09-28 | 1988-09-28 | Charge controller for solar light generating system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0295142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000114573A (en) * | 1998-10-01 | 2000-04-21 | Misawa Homes Co Ltd | Solar battery power generating device |
| EP2322375A2 (en) * | 2008-09-01 | 2011-05-18 | LG Chem, Ltd. | Apparatus and method for controlling a switch unit between battery pack and a load, and battery pack and battery management apparatus including the apparatus |
-
1988
- 1988-09-28 JP JP63243427A patent/JPH0295142A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000114573A (en) * | 1998-10-01 | 2000-04-21 | Misawa Homes Co Ltd | Solar battery power generating device |
| EP2322375A2 (en) * | 2008-09-01 | 2011-05-18 | LG Chem, Ltd. | Apparatus and method for controlling a switch unit between battery pack and a load, and battery pack and battery management apparatus including the apparatus |
| JP2012501620A (en) * | 2008-09-01 | 2012-01-19 | エルジー・ケム・リミテッド | Switch unit control device and method, and battery pack and battery management device including the device |
| EP2322375A4 (en) * | 2008-09-01 | 2014-07-09 | Lg Chemical Ltd | Apparatus and method for controlling a switch unit between battery pack and a load, and battery pack and battery management apparatus including the apparatus |
| US8896160B2 (en) | 2008-09-01 | 2014-11-25 | Lg Chem, Ltd. | Apparatus and method of controlling switch units, and battery pack and battery management apparatus comprising said apparatus |
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