DE102004003293A1 - Automobile battery condition is monitored by measuring quiescent current by transient disconnection of controller from power circuit - Google Patents
Automobile battery condition is monitored by measuring quiescent current by transient disconnection of controller from power circuit Download PDFInfo
- Publication number
- DE102004003293A1 DE102004003293A1 DE200410003293 DE102004003293A DE102004003293A1 DE 102004003293 A1 DE102004003293 A1 DE 102004003293A1 DE 200410003293 DE200410003293 DE 200410003293 DE 102004003293 A DE102004003293 A DE 102004003293A DE 102004003293 A1 DE102004003293 A1 DE 102004003293A1
- Authority
- DE
- Germany
- Prior art keywords
- voltage
- voltage regulator
- power supply
- control unit
- charge storage
- 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- Withdrawn
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
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
Abstract
Description
Die Erfindung betrifft eine Stromversorgungseinrichtung mit einer Batterie und ein Verfahren zu deren Betrieb gemäß den Oberbegriffen der unabhängigen Ansprüche 1 und 6. Eine derartige Stromversorgungseinrichtung wird besonders in Kraftfahrzeugen eingesetzt, deren Bordnetz Bleibatterien umfasst. Um bei allen klimatischen Bedingungen einen zuverlässigen Betrieb des Kraftfahrzeugs mit seinen zahlreichen elektrischen Verbrauchern zu gewährleisten, ist es unbedingt erforderlich, den Batteriezustand laufend zu überwachen. Zur Erkennung des Batteriezustands werden nach dem Stand der Technik üblicherweise die Werte von Spannung, Strom und Temperatur erfasst und ausgewertet. Bei einer Messung des Ruhestroms des Fahrzeugs wird jedoch dabei die Messung verfälscht, da bei der herkömmlichen Methode auch die Stromaufnahme des Steuergeräts mit gemessen wird, das sich nicht im Ruhezustand befindet. Der dadurch bedingte Fehler wurde häufig vernachlässigt.The The invention relates to a power supply device with a battery and a method of operation thereof according to the preambles of independent claims 1 and 6. Such a power supply device is particularly in Used motor vehicles whose on-board network includes lead acid batteries. To be reliable in all climatic conditions of the motor vehicle with its numerous electrical consumers to ensure, It is absolutely necessary to constantly monitor the battery condition. To detect the battery condition, the prior art usually The values of voltage, current and temperature are recorded and evaluated. In a measurement of the quiescent current of the vehicle is, however falsifies the measurement, because in the conventional Method also the power consumption of the control unit is measured with that not in hibernation. The resulting error was often neglected.
Aus
Vorteile der ErfindungAdvantages of invention
Die Erfindung geht von der Erkenntnis aus, dass eine Messung des Ruhestroms des Fahrzeugs mit noch größerer Genauigkeit ermöglicht wird, wenn systematische Fehler bei der Messung vermieden werden. Durch die verbesserte Messgenauigkeit kann der Zustand der im Fahrzeug eingesetzten Batterie noch viel präziser als bisher erfasst werden. Dies wiederum steigert die Betriebssicherheit des Fahrzeugs, da es bei der großen Vielzahl der heute in einem modernen Fahrzeug vorhandenen elektrischen Verbraucher außerordentlich wichtig ist, möglichst genaue Informationen über den Zustand der Batterie zu erhalten. Stehen derart genaue Informationen zur Verfügung, kann in kritischen Situationen rechtzeitig für geeignete Maßnahmen gesorgt werden, wie beispielsweise die Abschaltung entbehrlicher elektrischer Verbraucher.The The invention is based on the recognition that a measurement of the quiescent current of the vehicle with even greater accuracy allows when systematic errors in the measurement are avoided. Due to the improved measuring accuracy, the condition of the vehicle used battery much more precise than previously recorded. This In turn, it increases the operational safety of the vehicle, as it does at the big Variety of electric vehicles present in a modern vehicle today Consumer extraordinarily important, if possible accurate information about to get the condition of the battery. Are such accurate information to disposal, can be in critical situations in time for appropriate action be taken care of, such as the shutdown unnecessary electrical consumer.
Vorteilhafte und zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.advantageous and appropriate embodiments and further developments of the invention are characterized in the subclaims.
Zeichnungendrawings
Die
Erfindung wird nachstehend anhand der Zeichnung erläutert. Es
zeigen
Beschreibung der Ausführungsbeispieledescription the embodiments
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen beschrieben. Hierbei handelt es sich um eine Stromversorgungseinrichtung für ein Fahrzeug. Die Erfindung ist jedoch nicht auf Stromversorgungseinrichtungen für Fahrzeuge beschränkt, sondern lässt sich zweckmäßig auch bei anderen Stromversorgungseinrichtungen einsetzen, die Batterien und Steuergeräte umfassen und bei denen es wichtig ist, den Batteriezustand möglichst genau zu erfassen.The The invention will be described below with reference to exemplary embodiments. This is a power supply device for a vehicle. However, the invention is not limited to power supplies for vehicles limited, but let yourself also useful for other power supplies, use the batteries and controllers and where it is important to keep the battery level as close as possible to grasp exactly.
Kern der Erfindung ist es, bei einer Stromversorgungseinrichtung der eingangs genannten Art ein Steuergerät mit einem Betriebsmodus bereitzustellen, bei dem die Stromaufnahme des Steuergeräts aus dem Bordnetz nahezu gegen Null geht. In diesem Betriebsmodus entspricht der gemessene Batteriestrom im Wesentlichen der Stromaufnahme des Fahrzeugs. Dadurch wird es beispielsweise möglich, den Ruhestrom des Fahrzeugs ohne zusätzlichen Sensor zu messen.core The invention is, in a power supply device of to provide a control device with an operating mode of the type mentioned at the outset, in which the power consumption of the control unit from the electrical system almost goes to zero. In this operating mode, the measured corresponds to Battery current substantially the power consumption of the vehicle. Thereby For example, it becomes possible to use the Quiescent current of the vehicle without additional sensor to eat.
Zur Messung des Ruhestroms wird die Versorgung des Steuergeräts auf einen integrierten Energiespeicher umgeschaltet, so dass der externe Stromverbrauch gegen Null geht. Die Messung des Stroms erfolgt so schnell, dass die Messung abgeschlossen ist, bevor der Energiespeicher entladen ist.to Measurement of the quiescent current will supply the controller to a integrated energy storage switched so that the external power consumption goes to zero. The measurement of the current takes place so fast that the measurement is completed before the energy storage is discharged.
Die
Stromversorgungseinrichtung
In
einem weiteren Ausführungsbeispiel
der Erfindung ist zusätzlich
ein Schaltmittel
- 11
- StromversorgungseinrichtungPower supply means
- 1010
- Batteriebattery
- 2020
- Steuergerätcontrol unit
- 2121
- Stromsensorcurrent sensor
- 2222
- Spannungsreglervoltage regulators
- 2323
- Energiespeicherenergy storage
- 2424
- Spannungsreglervoltage regulators
- 2525
- Schaltmittelswitching means
- 3030
- Bordnetzboard network
- U1U1
- Spannungtension
- U2U2
- Spannungtension
- VV
- Spannungtension
- tt
- ZeitTime
- t1t1
- Zeitpunkttime
- t2t2
- Zeitpunkttime
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410003293 DE102004003293A1 (en) | 2004-01-22 | 2004-01-22 | Automobile battery condition is monitored by measuring quiescent current by transient disconnection of controller from power circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410003293 DE102004003293A1 (en) | 2004-01-22 | 2004-01-22 | Automobile battery condition is monitored by measuring quiescent current by transient disconnection of controller from power circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004003293A1 true DE102004003293A1 (en) | 2005-08-11 |
Family
ID=34745009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410003293 Withdrawn DE102004003293A1 (en) | 2004-01-22 | 2004-01-22 | Automobile battery condition is monitored by measuring quiescent current by transient disconnection of controller from power circuit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004003293A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043419A1 (en) * | 2006-09-15 | 2008-04-03 | Audi Ag | On-board electrical system`s quiescent current determining method for automobile, involves forming measuring unit for detecting current measuring values characterizing momentary quiescent current, and storing values in memory unit |
CN110780212A (en) * | 2018-07-25 | 2020-02-11 | 罗伯特·博世有限公司 | Method for adjusting a measuring device in a motor vehicle |
-
2004
- 2004-01-22 DE DE200410003293 patent/DE102004003293A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006043419A1 (en) * | 2006-09-15 | 2008-04-03 | Audi Ag | On-board electrical system`s quiescent current determining method for automobile, involves forming measuring unit for detecting current measuring values characterizing momentary quiescent current, and storing values in memory unit |
DE102006043419B4 (en) * | 2006-09-15 | 2017-03-09 | Audi Ag | Method and current measuring device for determining a quiescent current of a vehicle electrical system of a motor vehicle during the manufacture of motor vehicles or a car maintenance |
CN110780212A (en) * | 2018-07-25 | 2020-02-11 | 罗伯特·博世有限公司 | Method for adjusting a measuring device in a motor vehicle |
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8141 | Disposal/no request for examination |