WO2004042411A1 - Procede et dispositif pour identifier un fonctionnement sans batterie d'un vehicule - Google Patents

Procede et dispositif pour identifier un fonctionnement sans batterie d'un vehicule Download PDF

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Publication number
WO2004042411A1
WO2004042411A1 PCT/DE2003/003598 DE0303598W WO2004042411A1 WO 2004042411 A1 WO2004042411 A1 WO 2004042411A1 DE 0303598 W DE0303598 W DE 0303598W WO 2004042411 A1 WO2004042411 A1 WO 2004042411A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
vehicle
detecting
free
voltage
Prior art date
Application number
PCT/DE2003/003598
Other languages
German (de)
English (en)
Inventor
Marc Knapp
Wunibald Frey
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP03779675A priority Critical patent/EP1576379A1/fr
Publication of WO2004042411A1 publication Critical patent/WO2004042411A1/fr

Links

Classifications

    • 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
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • 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
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • 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
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle

Definitions

  • the invention relates to methods and devices for detecting battery-free vehicle operation according to the genus of the two independent claims.
  • the voltage supply in motor vehicle electrical systems is usually ensured with the aid of a generator which charges at least one battery.
  • the electrical vehicle components can usually be connected to the battery and are supplied with electrical energy by the battery. Since the battery is connected to the generator via a charging line, a supply of the electrical consumers can largely be ensured even when the battery is in bad condition and at the same time there is sufficient generator power available. However, it is problematic if the battery is largely discharged or if the battery is destroyed while driving or if there is a complete interruption between the battery and the vehicle electrical system.
  • Such battery-free operation represents an unfavorable mode of operation of a vehicle electrical system with regard to Stability of the on-board electrical system is therefore necessary. Detection of such battery-free operation is therefore necessary, this applies in particular to vehicles with safety-relevant electrical consumers.
  • safety-relevant consumers are, for example, electrical steering assistance or an electrical or electrohydraulic braking system. If battery-free operation is detected, countermeasures must be initiated and / or warning messages issued.
  • Battery or a completely defective battery closed Battery-free vehicle electrical system operation can then be maintained, for example, provided that sufficient electrical energy is generated by the generator. Determining the internal resistance of the battery, however, requires a relatively high level of metrological effort, since, for example, the battery current has to be measured. In addition, the computing power required for the quotient voltage / current is considerable.
  • Another possibility for detecting battery-free operation or for detecting a defective vehicle battery is to charge the battery from the generator to a higher value than the usual voltage setpoint when the engine is running and then discharge it again with the aid of an electrical load.
  • the operating state of the battery is determined by evaluating the voltage difference that occurs during charging or discharging within a time interval or by determining the time interval that expires until two voltage thresholds are reached or their functionality or storage capacity checked.
  • Such a method for detecting a defective motor vehicle battery is known for example from DE-P 19 964 057.2. This process is carried out, for example, in a control device which additionally triggers a display when a battery defect is detected.
  • the object of the invention is to detect a battery-free state or to identify a defective battery or an interrupted connection between the on-board electrical system and the battery without additional sensors, exclusively using information which is present in the vehicle on-board electrical system.
  • the method according to the invention and the device according to the invention with the features of the independent claims has the advantage that a battery-free state or an error in the battery or an interruption between the battery and the vehicle electrical system is reliably and reliably detected. It is particularly advantageous here that no complex measurements have to be carried out, so that the battery-free state can be identified without additional sensors, exclusively using information which is present anyway and is available, for example, as information or data on a CAN bus , These advantages are achieved by combining the data used and the way in which they are linked. These data essentially include voltages that are known in any case, for example the voltage at the input of the control device or the battery voltage. These known voltages are then advantageously processed in such a way that clear criteria for recognizing the battery-free state are obtained.
  • the AC voltage component of the voltages to be evaluated is filtered out in a particularly advantageous manner with the aid of a filter, for example a bandpass or lowpass filter.
  • a filter for example a bandpass or lowpass filter.
  • the amplitude of the AC voltage is evaluated with a variable correction factor.
  • the vehicle electrical system control unit or a microprocessor present in the vehicle electrical system control unit represents a device according to the invention, in which the evaluation processes run.
  • the figure shows a basic circuit diagram of a device according to the invention, with which a battery-free operation of a vehicle electrical system can be identified.
  • the figure shows a generator 10 which is driven by an internal combustion engine (not shown) and outputs an output voltage U Q for supplying the electrical components of a vehicle electrical system.
  • the voltage U Q is regulated in a conventional manner to predeterminable values with the aid of a voltage regulator (not shown) connected to the generator.
  • the one flowing through the field winding 11 of the generator 10 Excitation current regulated in a known manner by the voltage regulator.
  • the clocked excitation current obtained by clocked actuation of the control transistor of the voltage regulator is evaluated with the aid of a so-called DF monitor 12, ie the excitation current-clock ratio is determined.
  • the information obtained from the DF monitor 12 is fed to the engine control unit 13 for further evaluation, for example for the detection of the electrical load exerted by the vehicle electrical system.
  • the on-board computer 17 denotes an on-board computer in which the methods according to the invention for detecting battery-free operation run.
  • the on-board computer 17 comprises at least one power supply unit 18, one or more filters 19, a processor 20 and a CAN controller 21 and a control 22 for a display 27.
  • the on-board computer naturally also includes a processor and associated memory.
  • the components of the on-board computer 17 are interconnected in a known manner.
  • the on-board computer 17 is connected to the positive pole of the battery 16 via a connection 23. Data or information is exchanged between the engine control unit 13 and the CAN controller 21 of the on-board computer 17 via a CAN connection 24.
  • This CAN connection 24 (CAN bus) can optionally also be connected to an electrical energy management system EEM 25, which can be, for example, its own control unit or a microprocessor and / or signal power distributors SLV 26.
  • EEM 25 electrical energy management system
  • a bit-synchronous interface BSS can also be provided, which ultimately also does that Excitation current sensing ratio forwards to the engine control unit 13.
  • the voltage USG is measured at the input of control unit 13 and taken into account by the control unit when calculating control variables for engine control. If this voltage is not measured anyway in some systems, at least the voltage UB at the battery 16 is then detected and taken into account by the control device for the generation of control signals. In addition, this voltage information is output from the CAN bus and is thus available to all systems that are connected to the CAN bus, including the on-board computer 17.
  • the alternating voltage component is filtered out of one of the two voltages USG or ÜB or from both voltages in the on-board computer 17 via a filter 19, in particular a bandpass or lowpass filter.
  • the amplitude of the AC voltage component is then assessed using a variable correction factor.
  • the current correction factor or a corresponding parameter is determined from the large generator speed nG and other variables, the generator speed nG either from the control device 13 itself or from the on-board computer 17 from the engine speed already present in the control device 13 and the
  • Genrator translation ratio is calculated.
  • the speed information is supplied via the CAN bus.
  • Another variable that is taken into account when determining the current correction factor or a corresponding parameter is the controller duty cycle or the excitation current duty cycle, which is determined with the aid of the DF monitor and a measure of the excitation of the generator and thus of the electrical one Load on the generator.
  • This size is also usually present in the engine control unit 13 anyway and is generally made available in the on-board electrical system via the CAN bus or is determined in the on-board computer 17 from the engine speed.
  • the limit value for the correction factor or for the parameter, upon reaching which a battery-free operation is recognized, is vehicle-specific and is applied for each vehicle type. Detecting the batteryless
  • Operation is usually carried out in the on-board computer 17, but it could also run in the computer of the engine control unit or in a centrally available on-board computer using suitable software.
  • Battery-free operation is recognized if the comparison of a currently determined correction factor with a predeterminable limit value results in at least reaching the limit value or exceeding the limit value.
  • one that is available via the CAN bus is used to form the correction factor
  • Such reliability in the detection of battery-free operation can be achieved that a uniform limit value can be used regardless of the vehicle type, and battery-free operation is then concluded if the calculated variable correction factor converts this uniform limit value by a predefinable value Value exceeds.
  • the procedures for recording the battery-free electrical system operation can be carried out continuously or at predefinable times or after the vehicle has been started up. If the continuously working evaluation is carried out and a battery-free condition is detected, the decision can be further secured by means of load connection.
  • voltage monitoring is carried out when switching on a defined and still uncritical load or a consumer 14, for example when switching on a rear window heater. Since the voltage drops to a known value when the defined load is switched on, it can be estimated by comparing the expected voltage value with the measured value whether a battery is present or is still functional. If the voltage drop is greater than an expected value, battery-free operation is recognized, in particular if the correction factor evaluation also suggests such battery-free operation.
  • the load connection will, for example, be initiated by a signal power distributor 26 without the driver being informed. If the voltage drop occurs within the expected tolerances, the detection of the battery-free operation confirmed. However, the connection of a load for battery status detection should only be carried out occasionally.
  • a corresponding display is triggered on the display 27 by the on-board computer via the control 22.
  • measures are initiated which still enable vehicle operation or at least emergency operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Control Of Charge By Means Of Generators (AREA)

Abstract

L'invention concerne des procédés et des dispositifs permettant d'identifier si un véhicule fonctionne sans batterie. A cet effet, à partir de grandeurs disponibles dans le système de commande du moteur, telles que la tension d'entrée dans ce système ou la tension de la batterie, un ordinateur de bord calcule des paramètres caractéristiques ou des facteurs de correction qui sont ensuite comparés à des paramètres caractéristiques ou des facteurs de correction escomptés.
PCT/DE2003/003598 2002-11-06 2003-10-29 Procede et dispositif pour identifier un fonctionnement sans batterie d'un vehicule WO2004042411A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03779675A EP1576379A1 (fr) 2002-11-06 2003-10-29 Procede et dispositif pour identifier un fonctionnement sans batterie d'un vehicule

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10251590A DE10251590A1 (de) 2002-11-06 2002-11-06 Verfahren und Vorrichtung zur Erkennung eines batterielosen Fahrzeugbetriebs
DE10251590.5 2002-11-06

Publications (1)

Publication Number Publication Date
WO2004042411A1 true WO2004042411A1 (fr) 2004-05-21

Family

ID=32115280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/003598 WO2004042411A1 (fr) 2002-11-06 2003-10-29 Procede et dispositif pour identifier un fonctionnement sans batterie d'un vehicule

Country Status (3)

Country Link
EP (1) EP1576379A1 (fr)
DE (1) DE10251590A1 (fr)
WO (1) WO2004042411A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1622430A3 (fr) * 2004-07-28 2010-01-13 Robert Bosch Gmbh Dispositif de stabilisation de tension
EP2372868A1 (fr) * 2010-03-31 2011-10-05 Valeo Etudes Electroniques Boîtier électrique pour véhicule automobile
WO2016177488A1 (fr) * 2015-05-04 2016-11-10 Robert Bosch Gmbh Procédé de détection d'un raccordement correct d'au moins un accumulateur d'énergie à un réseau de bord
WO2017089066A1 (fr) * 2015-11-26 2017-06-01 Robert Bosch Gmbh Procédé permettant de détecter un état d'un réseau de bord

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004035513A1 (de) * 2004-07-22 2006-02-16 Robert Bosch Gmbh Verfahren zur Detektion der Verbindung zwischen Energiespeicher und dem Bordnetz eines Fahrzeugs
DE102017218312A1 (de) * 2017-10-13 2019-04-18 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zum Betreiben eines Kraftrads sowie Kraftrad mit einer solchen Vorrichtung
CN108802654B (zh) * 2018-07-06 2019-12-06 山东大学 一种化成分容测试电源的自动标定采集系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379990A (en) * 1980-05-22 1983-04-12 Motorola Inc. Fault detection and diagnostic system for automotive battery charging systems
FR2766991A1 (fr) * 1997-07-30 1999-02-05 Valeo Equip Electr Moteur Procede pour la regulation par traitement numerique du courant d'excitation d'un alternateur de vehicule automobile et dispositif regulateur mettant en oeuvre un tel procede
DE19948968A1 (de) * 1999-10-12 2001-04-19 Bosch Gmbh Robert Vorrichtung zur Erkennung einer Unterbrechung der Ladeleistung zwischen einem Generator und einer Batterie eines Kraftfahrzeuges
US6275161B1 (en) * 1998-09-18 2001-08-14 C.K. Electronics Sdn. Bhd. Method and apparatus for automotive battery condition indication
DE10021602A1 (de) * 2000-05-04 2001-11-08 Bayerische Motoren Werke Ag Vorrichtung und Verfahren zur Erkennung einer Unterbrechung in der Ladeleitung zwischen einen Generator und einer elektrischen Batterie in einem Kraftfahrzeug
WO2002001689A2 (fr) * 2000-06-26 2002-01-03 Snap-On Technologies, Inc. Procede et systeme permettant de tester un alternateur dans lesquels on utilise une application minutee de la charge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379990A (en) * 1980-05-22 1983-04-12 Motorola Inc. Fault detection and diagnostic system for automotive battery charging systems
FR2766991A1 (fr) * 1997-07-30 1999-02-05 Valeo Equip Electr Moteur Procede pour la regulation par traitement numerique du courant d'excitation d'un alternateur de vehicule automobile et dispositif regulateur mettant en oeuvre un tel procede
US6275161B1 (en) * 1998-09-18 2001-08-14 C.K. Electronics Sdn. Bhd. Method and apparatus for automotive battery condition indication
DE19948968A1 (de) * 1999-10-12 2001-04-19 Bosch Gmbh Robert Vorrichtung zur Erkennung einer Unterbrechung der Ladeleistung zwischen einem Generator und einer Batterie eines Kraftfahrzeuges
DE10021602A1 (de) * 2000-05-04 2001-11-08 Bayerische Motoren Werke Ag Vorrichtung und Verfahren zur Erkennung einer Unterbrechung in der Ladeleitung zwischen einen Generator und einer elektrischen Batterie in einem Kraftfahrzeug
WO2002001689A2 (fr) * 2000-06-26 2002-01-03 Snap-On Technologies, Inc. Procede et systeme permettant de tester un alternateur dans lesquels on utilise une application minutee de la charge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1622430A3 (fr) * 2004-07-28 2010-01-13 Robert Bosch Gmbh Dispositif de stabilisation de tension
EP2372868A1 (fr) * 2010-03-31 2011-10-05 Valeo Etudes Electroniques Boîtier électrique pour véhicule automobile
FR2961963A1 (fr) * 2010-03-31 2011-12-30 Valeo Etudes Electroniques Boitier electrique pour vehicule automobile.
WO2016177488A1 (fr) * 2015-05-04 2016-11-10 Robert Bosch Gmbh Procédé de détection d'un raccordement correct d'au moins un accumulateur d'énergie à un réseau de bord
US10809291B2 (en) 2015-05-04 2020-10-20 Robert Bosch Gmbh Method for detecting a proper connection of at least one energy store to an on-board electrical system
WO2017089066A1 (fr) * 2015-11-26 2017-06-01 Robert Bosch Gmbh Procédé permettant de détecter un état d'un réseau de bord
US10992162B2 (en) 2015-11-26 2021-04-27 Robert Bosch Gmbh Method for detecting a state of a vehicle electric system

Also Published As

Publication number Publication date
EP1576379A1 (fr) 2005-09-21
DE10251590A1 (de) 2004-05-19

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