EP1719242A1 - Dispositif d'alimentation en courant electrique - Google Patents

Dispositif d'alimentation en courant electrique

Info

Publication number
EP1719242A1
EP1719242A1 EP05701652A EP05701652A EP1719242A1 EP 1719242 A1 EP1719242 A1 EP 1719242A1 EP 05701652 A EP05701652 A EP 05701652A EP 05701652 A EP05701652 A EP 05701652A EP 1719242 A1 EP1719242 A1 EP 1719242A1
Authority
EP
European Patent Office
Prior art keywords
generator
voltage
vehicle electrical
electrical systems
systems according
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Withdrawn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
EP05701652A
Other languages
German (de)
English (en)
Inventor
Herbert Labitzke
Andre Micko
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.)
Robert Bosch GmbH
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
Publication of EP1719242A1 publication Critical patent/EP1719242A1/fr
Withdrawn legal-status Critical Current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
    • H02J7/14—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
    • H02J7/1423—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 with multiple batteries
    • 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
    • H02J7/143—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 with multiple generators
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to devices for voltage supply, in particular in motor vehicle electrical systems according to the preamble of patent claim 1.
  • Conventional devices for power supply in motor vehicles have a generator, a battery and the various electrical consumers of the vehicle electrical system.
  • the generator is driven by suitable connecting means, for example the V-belt, from the internal combustion engine of the vehicle and supplies the electrical energy required for charging the battery and for supplying the consumer.
  • the output voltage of the generator is regulated to desired values by an assigned voltage regulator or generator regulator, the actual level of the output voltage U1 of the generator being able to be varied within certain limits and being adapted to specifiable requirements.
  • Generators commonly used are externally excited three-phase generators with an excitation winding, through which, after actuation of the ignition switch of the motor vehicle ("ignition on"), an excitation current which is clocked by the generator controller and which is supplied by the battery flows. So that a generator can "start” at all, it needs in the
  • Each generator which is constructed as a three-phase generator with an excitation winding and Séeswickhingen, is assigned a pulse inverter, via which a connection to a battery can be established.
  • the generators supply different output voltages, with the help of which two
  • the second generator When the individual, in particular two, voltage networks are completely decoupled, the second generator lacks the excitation current necessary for the starting. Particularly when only one battery is used, the second generator, that is to say the generator which is decoupled from the battery, lacks the excitation current required to tackle the problem.
  • the object of the invention is therefore to find a solution to this problem and to ensure that the second generator after actuation "ignition on” receives a sufficiently strong excitation current that enables it to be started reliably. This object is achieved by a device for voltage supply with the features of patent claim 1.
  • the device for voltage supply according to the invention has the advantage that the excitation current required for the necessary starting is reliably supplied to the second generator and thus both are fully functional Generators is ensured.
  • This advantage is achieved by connecting means creating additional connection options between the excitation winding of the second generator and a charge store, which are at least temporarily switched so that a conductive connection is established.
  • the conductive connection is advantageously started with actuation of the ignition switch and maintained until the generator has come on and generates an output voltage.
  • an additional connection is established between the voltage network with the battery and the second generator not belonging to this voltage network.
  • Converter is designed and thus can transmit power in both directions and compensates for existing voltage differences in the two voltage networks or adjusts the voltages. It is then possible to supply the voltage network comprising the battery by means of both generators. The excitation current required for the second generator is supplied "backwards" from the battery via the DC / DC converter.
  • the additional connection is made by means of a diode, if necessary using further components, in particular a resistor.
  • a switch either a relay or an electronic switch, advantageously a transistor switch.
  • ignition on the switch is closed and the connection to the battery is established, so that an excitation current can also flow in the second generator.
  • the switch is opened again and the two voltage networks are back on decoupled from each other.
  • One of the two voltage networks can advantageously be supplied by both when the two generators are operated in parallel, in which case the same output voltage of both generators is required.
  • the excitation current for switching on the second generator can flow via this sense path.
  • a predeterminable degree of coupling of the two voltage networks can be defined on the controller via an internal sound system of the sense path.
  • the excitation current for starting the second generator is obtained from an additional charge store which is part of the second voltage network and is designed, for example, as an additional battery, capacitor or supercap. It is then possible to completely decouple both voltage and vehicle electrical systems.
  • FIGS. 1 to 5 of the drawing Five exemplary embodiments of the invention are shown in FIGS. 1 to 5 of the drawing and are explained in more detail in the description below.
  • a first generator Gl for example an externally regulated three-phase generator, is connected on the voltage side to the charge store or the battery Bl and charges it in normal operation.
  • the generator Gl and the battery Bl also have a ground connection in the usual way.
  • Consumers VI can be connected to the battery B or the generator Gl via the ignition switch Z and any further switches S1 which may be present.
  • the generator Gl includes not shown
  • Stator windings also an excitation winding El and a voltage regulator or generator regulator Rl, which regulates the excitation current flowing through the excitation winding El in a known manner and thus regulates the desired output voltage Ul of the generator Gl.
  • the elements mentioned represent a first voltage or electrical system.
  • a second generator G2 with its own voltage regulator R2 and an excitation winding E2, which serves to supply the loads V2, which can be switched on or off via switch S2.
  • the output voltage of the generator G2 is regulated by the voltage regulator R2 to a voltage U2.
  • the second generator G2 would lack the excitation current IE2 required for starting through the excitation winding E2 and the generator could not start.
  • the generator current G2 can be provided with the excitation current IE required for starting from the battery B1.
  • the necessary excitation current IE for the second generator G2 is supplied “backwards” from the battery Bl via the DC-DC converter W.
  • the first generator Gl or its excitation winding El is connected to the battery B 1 in the usual way after actuation of the ignition switch, whereby an excitation current IE flows and enables the starting process of the generator Gl
  • the voltage converter W which is designed, for example, as a bidirectional DC / DC converter and can thus transmit power in both directions and existing ones
  • FIG. 2 shows a second exemplary embodiment of the invention. Except for the voltage converter W, it comprises the same components as the exemplary embodiment according to FIG. 1.
  • the additional connection between the two voltage networks and thus the coupling of the two voltage networks is made optional via a diode D and a resistor Wi and possibly other components.
  • the diode D is installed in such a way that the cathode is connected to the generator G2 and the anode is connected to the generator Gl and is therefore conductive for a current from the battery B1 to the excitation winding E2 if no voltage is yet induced in the generator G2 this connection is supplied to the second generator G2 with the excitation current required for starting from the battery B1.
  • FIG. 3 shows a third exemplary embodiment of the invention. Except for the voltage converter, it comprises the same components as the exemplary embodiment according to FIG. 1.
  • the additional connection between the two voltage networks and thus the excitation winding E2 of the generator G2 with the battery B1 takes place via a relay or a switch S3, via which the then excitation current IE2 required for addressing is supplied
  • the switch S3 can also be an electronic switch, advantageously a transistor switch.
  • ignition on the switch S2 is closed and the connection to the battery Bl is established, so that an excitation current IE2 can also flow in the second generator G2. After the second generator G2 has run up, the switch
  • the control of the switch S3 can take place, for example, by means of a control device, not shown.
  • FIG. 4 shows a fourth exemplary embodiment of the invention. Apart from the voltage converter, it comprises the same components as the exemplary embodiment according to FIG. 1.
  • FIG. 5 shows a fifth exemplary embodiment of the invention. It includes the same components as the exemplary embodiment except for the voltage converter
  • Capacitor or a super cap are used.
  • the exemplary embodiments can also be combined with one another with appropriate circuit adaptation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne des dispositifs d'alimentation en courant électrique, en particulier, pour les réseaux de bord de véhicules automobiles, consistant en deux réseaux électriques, par extension, deux réseaux de bord possédant chacun leur propre générateur (G1, G2). Le premier générateur et la batterie (B1) appartiennent au même réseau électrique et le deuxième générateur appartient au deuxième réseau électrique. Dans la cas d'une coupure des deux réseaux électriques, le deuxième générateur ne serait plus alimenté en courant d'excitation. Selon l'invention, des moyens relient le deuxième générateur à un accumulateur après la mise en service de l'allumage et mettent en application un courant d'excitation. Cet accumulateur peut également consister en la batterie du premier réseau électrique et le branchement peut être maintenu jusqu'à ce que le deuxième générateur démarre et produise une tension de sortie.
EP05701652A 2004-02-19 2005-02-09 Dispositif d'alimentation en courant electrique Withdrawn EP1719242A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004008433A DE102004008433A1 (de) 2004-02-19 2004-02-19 Vorrichtung zur Spannungsversorgung
PCT/EP2005/050570 WO2005081392A1 (fr) 2004-02-19 2005-02-09 Dispositif d'alimentation en courant electrique

Publications (1)

Publication Number Publication Date
EP1719242A1 true EP1719242A1 (fr) 2006-11-08

Family

ID=34832882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05701652A Withdrawn EP1719242A1 (fr) 2004-02-19 2005-02-09 Dispositif d'alimentation en courant electrique

Country Status (4)

Country Link
US (1) US7679219B2 (fr)
EP (1) EP1719242A1 (fr)
DE (1) DE102004008433A1 (fr)
WO (1) WO2005081392A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006052525B4 (de) 2006-11-06 2024-09-19 Man Truck & Bus Se Vorrichtung zum Parallelbetrieb von Generatoren
DE102007015996A1 (de) * 2007-04-03 2008-10-09 Zf Friedrichshafen Ag Fahrzeug mit einem elektrischen Bordnetz
DE102008002358A1 (de) 2008-06-11 2009-12-17 Robert Bosch Gmbh Spannungsversorgung und Bordnetz für ein Kraftfahrzeug
JP5192922B2 (ja) * 2008-06-24 2013-05-08 本田技研工業株式会社 発電機の並列運転接続装置
US10158248B2 (en) 2014-12-15 2018-12-18 Kohler Co. Communication failure handling
JP6875907B2 (ja) * 2017-03-30 2021-05-26 本田技研工業株式会社 発電機システム
DE102017124943A1 (de) * 2017-10-25 2019-04-25 Man Truck & Bus Ag Bordnetz für ein Kraftfahrzeug, insbesondere eines Mildhybrid- oder Mikrohybrid-Fahrzeugs

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069555A (en) * 1960-02-11 1962-12-18 Westinghouse Electric Corp Automatic paralleling system
US4539515A (en) 1982-03-18 1985-09-03 Mitsubishi Denki Kabushiki Kaisha Vehicular direct-current three-wire electric system
EP0232828B1 (fr) * 1986-02-14 1992-07-15 Hitachi, Ltd. Système d'alimentation pour véhicule ayant plusieurs tensions d'alimentation de puissance
DE3812577A1 (de) 1988-04-15 1989-10-26 Bosch Gmbh Robert Bordnetz fuer ein kraftfahrzeug
US4829228A (en) 1988-05-06 1989-05-09 General Motors Corporation Dual generator electrical system
JP2619539B2 (ja) 1989-11-02 1997-06-11 株式会社日立製作所 自動車用発電機
DE10106723B4 (de) 2001-02-14 2005-01-27 Robert Bosch Gmbh Vorrichtung zur Energieversorgung mehrerer Spannungsbordnetze und Batterien

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005081392A1 *

Also Published As

Publication number Publication date
US7679219B2 (en) 2010-03-16
DE102004008433A1 (de) 2005-09-08
US20070284948A1 (en) 2007-12-13
WO2005081392A1 (fr) 2005-09-01

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