DE4026526A1 - Battery charging circuit using photovoltaic system - has voltage regulator and switch between respective solar generator and battery - Google Patents

Battery charging circuit using photovoltaic system - has voltage regulator and switch between respective solar generator and battery

Info

Publication number
DE4026526A1
DE4026526A1 DE4026526A DE4026526A DE4026526A1 DE 4026526 A1 DE4026526 A1 DE 4026526A1 DE 4026526 A DE4026526 A DE 4026526A DE 4026526 A DE4026526 A DE 4026526A DE 4026526 A1 DE4026526 A1 DE 4026526A1
Authority
DE
Germany
Prior art keywords
battery
solar
charging current
photovoltaic system
solar generator
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.)
Withdrawn
Application number
DE4026526A
Other languages
German (de)
Inventor
Ulrich Dipl Ing Bieringer
Klaus Dipl Ing Seidler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken Systemtechnik AG
Original Assignee
Telefunken Systemtechnik AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken Systemtechnik AG filed Critical Telefunken Systemtechnik AG
Priority to DE4026526A priority Critical patent/DE4026526A1/en
Publication of DE4026526A1 publication Critical patent/DE4026526A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The circuit is inserted between a photovoltaic system with a number of solar generators (1...7) and the battery (10) to be charged. One of the solar generators (1) is coupled to the battery (10) via a charge regulator (10), the remaining solar generators (2...7) coupled to it via a switch (9). - The first solar generator (1) and the charge regulator (8) provide a charging current (I), which is varied between zero and a max permissible value, each of the remaining solar generators (2...7) providing a respective charging current (I2...I7) which is a respective multiple of the previous max charging current (I).

Description

Die Erfindung betrifft eine Schaltungsanordnung nach dem Oberbegriff von Anspruch 1.The invention relates to a circuit arrangement according to the Preamble of claim 1.

Photovoltaiksysteme bestehen bekannterweise aus minde­ stens zwei Solargeneratoren, die Gruppen von Solarzellen­ module besitzen. Sie dienen zur Erzeugung großer elek­ trischer Leistungen in der Größenordnung von 5 KW bis 100 KW und hoher Systemspannungen von 110 bzw. 220 V Gleichspannung. Diese Leistungen werden über Speicherbat­ terien, die vorzugsweise aus mehreren Teilbatterien be­ stehen, an Verbraucher allgemeiner Art abgegeben.As is known, photovoltaic systems consist of minde At least two solar generators, the groups of solar cells own modules. They are used to generate large elec services in the order of 5 KW to 100 KW and high system voltages of 110 or 220 V. DC voltage. These services are via storage bat terien, preferably from several sub-batteries are given to consumers of a general nature.

Der Erfindung liegt die Aufgabe zugrunde, eine Schaltungs­ anordnung der eingangs genannten Art zu schaffen, mit der bei einer Minimierung des technischen Aufwandes eine kon­ tinuierliche Ladestromeinstellung über den gesamten Lade­ strombereich und damit eine Konstantspannungsladung möglich ist.The invention has for its object a circuit to create arrangement of the type mentioned, with the with a minimization of the technical effort a con Continuous charge current setting across the entire charge  current range and thus constant voltage charging possible is.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Solargenerator über einen Laderegler und die restlichen Solargeneratoren jeweils über ein Schaltelement an die Bat­ terie angeschlossen sind, daß die Einheit aus erstem Solar­ generator und Laderegler einen zwischen Null und einem oberen Höchstwert einstellbaren Ladestrom liefert, und daß die übrigen Solargeneratoren derart ausgelegt sind, daß sie jeweils einen Ladestrom liefern, der entweder das 1-, 2-, 3- oder 4-fache usw. des Höchstwertes des einstellbaren La­ destromes beträgt.The object is achieved in that a Solar generator via a charge controller and the rest Solar generators each have a switching element on the bat terie are connected that the unit from the first solar generator and charge controller one between zero and one upper maximum value adjustable charging current delivers, and that the other solar generators are designed so that they each deliver a charging current that either the 1-, 2-, 3 or 4 times the maximum value of the adjustable La destromes.

Vorteilhafterweise wird durch die teilweise binär gestuften Schaltgruppen eine fein gestufte Ladestromeinstellung ge­ stattet. Von Vorteil ist auch, daß die Schalthäufigkeit der einzelnen Gruppen und damit die Belastung der Schütze re­ duziert wird.Advantageously, the partially binary graded Switching groups a finely graduated charging current setting equips. It is also an advantage that the switching frequency of the individual groups and thus the burden on the shooter right is induced.

Eine Ausgestaltung der Erfindung ist im Unteranspruch 2 be­ schrieben.An embodiment of the invention is in the dependent claim 2 be wrote.

In der Zeichnung sind zwei Ausführungsbeispiele nach der Erfindung dargestellt und zwar zeigen:In the drawing are two embodiments according to the Invention shown and show:

Fig. 1 eine für 88 KW Leistung und eine Spannung von 220 V Gleichspannung ausgelegte Anlage, und Fig. 1 is designed for 88 KW power and a voltage of 220 V DC system, and

Fig. 2 eine Anlage für etwa 9 KW Leistung und eine Spannung von 110 V Gleichspannung. Fig. 2 shows a system for about 9 KW power and a voltage of 110 V DC.

In Fig. 1 wird ein Photovoltaiksystem von insgesamt sieben Solargeneratoren 1 bis 7 gebildet, von denen der Solarge­ nerator 1 über einen Laderegler 8 und die übrigen Solarge­ neratoren 2 bis 7 über Schaltelemente 9, z. B. Schütze, an eine Speicherbatterie 10 angeschlossen sind. Der Lade­ stromregler 8 kann als getaktete Stufe als sogenannter Shuntregler ausgebildet sein, wobei eine Pulsbreitenmodu­ lation des Stromes erfolgen kann. Solargenerator 1 und Laderegler 8 sind derart ausgelegt, daß ein Ladestrom im Bereich von Null bis 20 Ampere bereitgestellt werden kann. Die Solargeneratoren 2 und 3 liefern jeweils einen Lade­ strom von nahezu 20 bzw. 40 Ampere, während jeder der So­ largeneratoren 4 bis 7 jeweils einen Ladestrom von 80 Am­ pere bereitstellt. Je nach Auswahl der auf die Batterie 10 geschalteten Solargeneratoren 1 bis 7 läßt sich somit ein Ladestrom im Bereich von 0 bis 400 Ampere erzeugen.In Fig. 1, a photovoltaic system of a total of seven solar generators 1 to 7 is formed, of which the solar generator 1 via a charge controller 8 and the remaining solar generators 2 to 7 via switching elements 9 , z. B. contactors, are connected to a storage battery 10 . The charging current regulator 8 can be designed as a clocked stage as a so-called shunt regulator, wherein a pulse width modulation of the current can take place. Solar generator 1 and charge controller 8 are designed such that a charging current in the range from zero to 20 amperes can be provided. The solar generators 2 and 3 each deliver a charging current of almost 20 or 40 amperes, while each of the solar generators 4 to 7 each provides a charging current of 80 amps. Depending on the selection of the solar generators 1 to 7 connected to the battery 10 , a charging current in the range from 0 to 400 amperes can thus be generated.

In Fig. 2 sind die entsprechenden Bauelemente mit den Be­ zugszeichen aus Fig. 1 versehen. Die Solargeneratoren 1 und 2 liefern einen Ladestrom von jeweils 20 Ampere, während Solargenerator 3 einen Ladestrom von 40 Ampere bereitstellt. Mit der dargestellten Anlage läßt sich so­ mit ein Ladestrom im Bereich von 0 bis 80 Ampere erzeugen.In Fig. 2, the corresponding components are provided with the reference numerals from Fig. 1. The solar generators 1 and 2 deliver a charging current of 20 amperes each, while the solar generator 3 provides a charging current of 40 amperes. With the system shown, a charging current in the range from 0 to 80 amperes can be generated.

Claims (2)

1. Schaltungsanordnung zum Aufladen einer einem Photovolta­ iksystem großer Leistung nachgeschalteten Batterie, wobei die Batterie vorzugsweise aus Teilbatterien aufgebaut ist, und wobei das Photovoltaiksystem vorzugsweise aus mindestens zwei Gruppen von Solarzellenmodulen aufweisenden Solarge­ neratoren besteht, dadurch gekennzeichnet, daß ein Solarge­ nerator (1) über einen Laderegler (8) und die restlichen Solargeneratoren (2-7) jeweils über ein Schaltelement (9) an die Batterie (10) angeschlossen sind, daß die Einheit aus erstem Solargenerator (1) und Laderegler (8) einen zwischen Null und einem oberen Höchstwert einstellbaren Ladestrom (I1) liefert, und daß die übrigen Solargeneratoren (2-7) derart ausgelegt sind, daß sie jeweils einen Lade­ strom (I2, I3, I4, .....) liefern, der entweder das 1-, 2-, 3- oder 4-fache usw. des Höchstwertes des einstellbaren La­ destromes (I1) beträgt.1. Circuit arrangement for charging a battery downstream of a high-performance photovoltaic system, the battery preferably being constructed from sub-batteries, and the photovoltaic system preferably consisting of at least two groups of solar cell modules having solar generators, characterized in that a solar generator ( 1 ) has a charge controller ( 8 ) and the remaining solar generators ( 2-7 ) are each connected to the battery ( 10 ) via a switching element ( 9 ) that the unit consisting of the first solar generator ( 1 ) and charge controller ( 8 ) one between zero and an upper one Maximum adjustable charging current (I 1 ) delivers, and that the other solar generators ( 2-7 ) are designed such that they each deliver a charging current (I 2 , I 3 , I 4 , .....) that either 1, 2, 3 or 4 times, etc. the maximum value of the adjustable La destromes (I 1 ). 2. Schaltungsanordnung nach Anspruch 1, gekennzeichnet durch die Verwendung eines getakteten Shuntreglers als Laderegler (8).2. Circuit arrangement according to claim 1, characterized by the use of a clocked shunt regulator as a charge regulator ( 8 ).
DE4026526A 1990-08-22 1990-08-22 Battery charging circuit using photovoltaic system - has voltage regulator and switch between respective solar generator and battery Withdrawn DE4026526A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4026526A DE4026526A1 (en) 1990-08-22 1990-08-22 Battery charging circuit using photovoltaic system - has voltage regulator and switch between respective solar generator and battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4026526A DE4026526A1 (en) 1990-08-22 1990-08-22 Battery charging circuit using photovoltaic system - has voltage regulator and switch between respective solar generator and battery

Publications (1)

Publication Number Publication Date
DE4026526A1 true DE4026526A1 (en) 1992-02-27

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Family Applications (1)

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DE4026526A Withdrawn DE4026526A1 (en) 1990-08-22 1990-08-22 Battery charging circuit using photovoltaic system - has voltage regulator and switch between respective solar generator and battery

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527740C1 (en) * 1995-06-30 1996-12-05 Webasto Systemkomponenten Gmbh Circuit arrangement of solar cells
DE10118728B4 (en) * 2001-04-06 2005-03-10 Solarc Innovative Solarprodukt Solar recharging system for a motor vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1447527A (en) * 1972-10-20 1976-08-25 Acec Apparatus for regulating the voltage of an electric source
EP0051959A1 (en) * 1980-10-31 1982-05-19 Solarex Corporation Voltage regulator for photovoltaic charging systems
DE3105972A1 (en) * 1980-02-22 1982-08-19 Garrett, Lane S., 85260 Scottsdale, Ariz. "VOLTAGE SUPPLY ARRANGEMENT"
DE3730440A1 (en) * 1986-09-10 1988-03-17 Rca Corp LINEAR VOLTAGE CONTROL FOR A SOLAR CELL ARRANGEMENT
DE3912283A1 (en) * 1989-04-14 1989-12-07 Ernst Maass Circuit arrangement for solar cells

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1447527A (en) * 1972-10-20 1976-08-25 Acec Apparatus for regulating the voltage of an electric source
DE3105972A1 (en) * 1980-02-22 1982-08-19 Garrett, Lane S., 85260 Scottsdale, Ariz. "VOLTAGE SUPPLY ARRANGEMENT"
EP0051959A1 (en) * 1980-10-31 1982-05-19 Solarex Corporation Voltage regulator for photovoltaic charging systems
DE3730440A1 (en) * 1986-09-10 1988-03-17 Rca Corp LINEAR VOLTAGE CONTROL FOR A SOLAR CELL ARRANGEMENT
DE3912283A1 (en) * 1989-04-14 1989-12-07 Ernst Maass Circuit arrangement for solar cells

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527740C1 (en) * 1995-06-30 1996-12-05 Webasto Systemkomponenten Gmbh Circuit arrangement of solar cells
DE10118728B4 (en) * 2001-04-06 2005-03-10 Solarc Innovative Solarprodukt Solar recharging system for a motor vehicle

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