DE4420040A1 - Voltage measuring device for battery or rechargeable battery - Google Patents

Voltage measuring device for battery or rechargeable battery

Info

Publication number
DE4420040A1
DE4420040A1 DE4420040A DE4420040A DE4420040A1 DE 4420040 A1 DE4420040 A1 DE 4420040A1 DE 4420040 A DE4420040 A DE 4420040A DE 4420040 A DE4420040 A DE 4420040A DE 4420040 A1 DE4420040 A1 DE 4420040A1
Authority
DE
Germany
Prior art keywords
voltage
charge
battery
voltages
circuit
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Withdrawn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
DE4420040A
Other languages
German (de)
Inventor
Klaus Dr Bruchner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE4420040A priority Critical patent/DE4420040A1/en
Publication of DE4420040A1 publication Critical patent/DE4420040A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators

Abstract

One or more light emitting diodes with different forward voltages connected in parallel is or are used to indicate the charge of the batteries or accumulators. The type of diode is selected so that their individual threshold voltages bear a definite relationship to the maximum charge of the battery etc. When the battery etc. pole is applied to the diodes, only those diodes are illuminated whose forward voltages are exceeded by the residual battery voltage, thereby giving an approximate measure of the present voltage state of the battery.

Description

Die Bestimmung des Ladungszustandes bzw. der vorhandenen Restspannung von handelsüblichen Batterien oder Akkumulatoren erfolgt heute üblicherweise mittels Drehspulenmeßgeräten. Diese Methode ist zwar bei entsprechendem Aufwand sehr genau, doch sind die genannten Meßgeräte relativ teuer und oft für den Laien nicht ohne techn. Grundkenntnisse anwendbar.The determination of the state of charge or the existing one Residual voltage of standard batteries or accumulators today usually takes place by means of moving coil measuring devices. This method is very accurate with the corresponding effort, however, the measuring devices mentioned are relatively expensive and often for the layperson not without tech. Basic knowledge applicable.

In vielen Fällen, z. B. nach längerer Liegezeit, ist es jedoch meist ausreichend, den ungefähren Ladungszustand der Spannungsquelle zu kennen, um zu entscheiden, ob diese sofort erneuert oder geladen werden muß, oder ob die Ladung dem vorgesehenen Verwendungsfall noch genügt.In many cases, e.g. B. after a long period of lay, but it is usually sufficient to approximate the state of charge of the voltage source know to decide whether it should be renewed or loaded immediately must be, or whether the cargo is the intended use is still sufficient.

Eine kostengünstige und einfache Möglichkeit zur Ermittlung des Spannungszustandes einer Batterie oder eines Akkumulators bietet die Verwendung von Leuchtdioden mit unterschiedlichen Durchlaßspannungen, wobei diese Spannungen in einem vorgegebenen, bekannten Verhältnis zur max. Sollspannung der Spannungsquelle stehen (= 1.0 x Sollspannung) und so angeordnet werden, daß sie beim Aufleuchten der jeweiligen Dioden, d. h. beim Überschreiten deren Durchlaßspannungen, eine direkte Zuordnung und damit näherungsweise Aussage über den Ladungszustand der Batterie oder des Akkumulators zulassen.An inexpensive and easy way to determine the The voltage state of a battery or an accumulator offers Use of LEDs with different Forward voltages, these voltages in one predetermined, known ratio to the max. Target voltage of the Voltage source (= 1.0 x target voltage) and so arranged be that when the respective diodes, d. H. at the If their forward voltages exceed a direct assignment and thus an approximate statement about the state of charge of the Allow battery or accumulator.

Dabei ist die Genauigkeit abhängig von der Anzahl der verwendeten Dioden und deren unterschiedlichen Durchlaßspannungen.The accuracy depends on the number of used Diodes and their different forward voltages.

Die Anordnung in Bild 1 zeigt beispielhaft 4 Leuchtdioden, die parallel geschaltet sind und deren einzelne Durchlaßspannungen so gewählt wurden, daß sie 95%, 75%, 50% und 25% der max. Spannung der Batterie/ des Akkumulators aufweisen. Beim Anlegen der zu prüfenden Batterie-/Akkumulatoren-Istspannung leuchten nun nur diese Dioden auf, deren Durchlaßspannung überschritten wird, so daß eine ungefähre Aussage über die Restspannung der Spannungsquelle möglich ist, nämlich "fast voll", " mehr als 3/4 voll", "mehr als 1/2 voll", "mehr als 1/4 voll", "weniger als 1/4 voll". Je nach Bedarf ist auch jede andere Abstufung und Anzahl der Leuchtdioden-/Durchlaßspannungen möglich.The arrangement in Figure 1 shows an example of 4 light-emitting diodes that are connected in parallel and whose individual forward voltages have been selected so that they are 95%, 75%, 50% and 25% of the max. Have voltage of the battery / accumulator. When the actual battery / accumulator voltage to be tested is applied, only those diodes light up whose forward voltage is exceeded, so that an approximate statement about the residual voltage of the voltage source is possible, namely "almost full", "more than 3/4 full" , "more than 1/2 full", "more than 1/4 full", "less than 1/4 full". Depending on requirements, any other gradation and number of light emitting diodes / forward voltages is also possible.

Die Abhängigkeit zwischen Strom und Spannung von Halbleiterdioden mit ihrer typischen Kennlinie, d. h. Hochohmigkeit bis zur Schwellspannung, danach Niederohmigkeit der Diode ist Stand der Technik und wird hier zur Bestimmung von Ladungszuständen genutzt.The dependence between current and voltage of Semiconductor diodes with their typical characteristic, i.e. H. High impedance up to the threshold voltage, then the diode is low-impedance State of the art and is used here to determine Charge states used.

Durch das Vorschalten verschiedener fester, oder eines einstellbaren Widerstandes besteht die Möglichkeit, alle heute im Handel vertriebenen Batterie-/Akkumulatoren-Spannungen nach dem oben dargestellten Prinzip zu erfassen (Bild 2).By connecting various fixed or adjustable resistors, it is possible to record all battery / accumulator voltages sold today in accordance with the principle outlined above ( Figure 2).

Claims (4)

1. Die Vorrichtung zur Ermittlung der IST-Spannung von Batterien und 3 Akkumulatoren ist also dadurch gekennzeichnet, daß zur Bestimmung der Ladung von Batterien oder Akkumulatoren eine oder mehrere parallelgeschaltete Leuchtdioden mit unterschiedlicher Durchlaßspannung verwendet werden, wobei die Diodenart so ausgewählt wird, daß deren einzelne Schwellspannungen in einem def. Verhältnis zur max. Ladung der Spannungsquelle liegen. Beim Anlegen der Batterie-/ Akkumulatorenpole an die Diodenschaltung leuchten dann nur die Dioden auf, deren Durchlaßspannungen von der Restspannung der Spannungsquelle überschritten werden und geben somit ein angenähertes Maß für den vorliegenden Spannungszustand des Prüflings.1. The device for determining the actual voltage of batteries and 3 accumulators is thus characterized in that one or more parallel-connected LEDs with different forward voltage are used to determine the charge of batteries or accumulators, the type of diode being selected so that its individual Threshold voltages in a def. Relationship to the max. Charge of the voltage source. When the battery / accumulator poles are applied to the diode circuit, only the diodes light up, the forward voltages of which are exceeded by the residual voltage of the voltage source and thus give an approximate measure of the present voltage state of the test specimen. 2. Die Vorrichtung nach Anspruch 1 ist insbesondere dadurch gekennzeichnet, daß die Größe der Schwellspannungen der zur Spannungsermittlung eingesetzten Leuchtdioden abhängig von der max. Sollspannung des Prüflings gewählt wird, wobei über entsprechende feste oder einstellbare Vorwiderstände ein großer Bereich unterschiedlicher Prüfspannungen abgedeckt werden kann, und daß die Genauigkeit der Aussage über den Ladungszustand der Batterie / des Akkumulators über die Anzahl der verwendeten Leuchtdioden be­ einflußbar ist (Bild 2).2. The device according to claim 1 is particularly characterized in that the size of the threshold voltages of the light-emitting diodes used for voltage determination depends on the max. The target voltage of the device under test is selected, whereby a large range of different test voltages can be covered by means of appropriate fixed or adjustable series resistors, and that the accuracy of the statement about the state of charge of the battery / accumulator can be influenced via the number of LEDs used ( Figure 2). 3. Die Vorrichtung nach Anspruch 1 ist weiterhin dadurch gekennzeichnet, daß diese Schaltung in allen mit galvanischen Spannungselementen betriebenen Geräten integriert werden kann, so daß hier immer, oder z. B. durch Zuschalten der Meßanordnung, der Ladungszu­ stand der Stromquelle feststellbar ist.3. The device of claim 1 is further characterized characterized in that this circuit in all with galvanic voltage elements operated devices can be integrated, so that here, or z. B. by switching on the measuring arrangement, the charge the current source can be determined. 4. Ferner ist die Vorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß o.g. Schaltung bereits - mit einem vertretbaren Umfang - in der Spannungsquelle selbst integrierbar ist, so daß deren Istspannung sofort bestimmt werden kann. Die Prüfschaltung kann dabei so angelegt sein, daß eine permanente Anzeige des Ladungszustandes gegeben ist, oder daß sie über ein Schaltelement zugeschaltet werden kann.4. Furthermore, the device according to claim 1 characterized in that o.g. Circuit already - with a reasonable scope - in the Voltage source itself can be integrated, so that its actual voltage can be determined immediately. The test circuit can do so be created that a permanent display of the state of charge is given, or that it is switched on via a switching element can be.
DE4420040A 1994-06-08 1994-06-08 Voltage measuring device for battery or rechargeable battery Withdrawn DE4420040A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4420040A DE4420040A1 (en) 1994-06-08 1994-06-08 Voltage measuring device for battery or rechargeable battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4420040A DE4420040A1 (en) 1994-06-08 1994-06-08 Voltage measuring device for battery or rechargeable battery

Publications (1)

Publication Number Publication Date
DE4420040A1 true DE4420040A1 (en) 1995-12-14

Family

ID=6520103

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4420040A Withdrawn DE4420040A1 (en) 1994-06-08 1994-06-08 Voltage measuring device for battery or rechargeable battery

Country Status (1)

Country Link
DE (1) DE4420040A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640248C2 (en) * 1996-04-18 2000-07-20 Suzuki Motor Co Device for indicating the remaining capacity of a battery for an electrically assisted two-wheeler
DE102010040031A1 (en) * 2010-08-31 2012-03-01 Continental Automotive Gmbh Electronic circuit for use in circuit arrangement for monitoring cell voltage of battery-energy storage, comprises galvanic separating element having input stage and output stage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640248C2 (en) * 1996-04-18 2000-07-20 Suzuki Motor Co Device for indicating the remaining capacity of a battery for an electrically assisted two-wheeler
DE102010040031A1 (en) * 2010-08-31 2012-03-01 Continental Automotive Gmbh Electronic circuit for use in circuit arrangement for monitoring cell voltage of battery-energy storage, comprises galvanic separating element having input stage and output stage
DE102010040031B4 (en) * 2010-08-31 2019-01-03 Continental Automotive Gmbh Monitoring the voltage of a cell of a battery energy storage device to an over and / or falling below a reference voltage

Similar Documents

Publication Publication Date Title
DE2911136A1 (en) VOLTAGE TESTER AND CIRCUIT TESTER
DE19636226A1 (en) Lambda probe internal resistance determination
DE2703880B2 (en) Electrical test device with acoustic, quantitative analog display for resistance and voltage
DE2946690A1 (en) CIRCUIT TEST DEVICE
DE4420040A1 (en) Voltage measuring device for battery or rechargeable battery
US11016148B1 (en) Self-configuring relay tester
DE69830467T2 (en) Circuit for automatically switching on a battery-operated voltage measuring device
DE10229760A1 (en) Position determination method for an inductive position sensor
DE3226253C2 (en)
DE2846674B2 (en) Test device for displaying an electrical voltage and, if necessary, its polarity
DE1673366A1 (en) Measuring device for determining a positive or negative acceleration
DE732447C (en) Device for measuring the speed or rotational speed of mechanically moved bodies
DE10342633B4 (en) Charge state determination by means of highly dynamic current pulses
DE3818034A1 (en) Meter for the display of the internal resistance of a battery
DE932119C (en) Circuit arrangement for measuring the ratio of mean value time to base time of individual electrical impulses of any shape, in particular for measuring the degree of transmission of photographic shutters
DE2043660C3 (en) Method and device for testing batteries
DE2830323A1 (en) Voltage measurement with human body in current circuit - uses low current liq. crystal or solid state display
DE3308793A1 (en) Battery-operated insulation measuring instrument
DE2003937A1 (en) Battery tester
DE823902C (en) Calibration control circuit for electrical measuring devices
DE3011499A1 (en) Low power voltage meter for dry cells - contains bridge circuit with temp. dependent resistor and semiconductor diode
DE88649C (en)
DE958677C (en) Peak voltmeter with multiple measuring ranges
DE3009319A1 (en) CIRCUIT ANALYZER
DE2745003A1 (en) Monitor checking charge of primary cell - measures residual HF voltage of applied HF signal without loading cell

Legal Events

Date Code Title Description
8101 Request for examination as to novelty
8105 Search report available
8141 Disposal/no request for examination