GB2205009A - Power supply for electronic systems on vehicles or vessels - Google Patents

Power supply for electronic systems on vehicles or vessels Download PDF

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Publication number
GB2205009A
GB2205009A GB08711179A GB8711179A GB2205009A GB 2205009 A GB2205009 A GB 2205009A GB 08711179 A GB08711179 A GB 08711179A GB 8711179 A GB8711179 A GB 8711179A GB 2205009 A GB2205009 A GB 2205009A
Authority
GB
United Kingdom
Prior art keywords
supply
power supply
auxiliary
alternator
main
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Withdrawn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
GB08711179A
Other versions
GB8711179D0 (en
Inventor
Robert Throwell Burton
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB08711179A priority Critical patent/GB2205009A/en
Publication of GB8711179D0 publication Critical patent/GB8711179D0/en
Publication of GB2205009A publication Critical patent/GB2205009A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14Circuit 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
    • H02J7/1423Circuit 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric 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
    • B60R16/02Electric 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
    • B60R16/03Electric 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14Circuit 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
    • H02J7/143Circuit 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

Abstract

The power supply has a main alternator-driven supply 12 which is used to power heavy duty sub-systems 28,30 such as relays, motors, lights and the like, and an auxiliary power supply system working in tandem with the main alternator-driven supply, and having its own engine-driven auxiliary alternator 14 to provide a protected auxiliary power supply for electronic microprocessor control devices 24,26 in the vehicle/vessel independently of the main supply. The two alternators 12,14 can be housed in magnetically and electrically isolated sections of a single tandem alternator unit which share a common engine drive. The auxiliary supply maintains a rechargeable back-up battery system 22. Microprocessors 24,26 may control vehicle braking and suspension systems, 28,30 which receive power from the main supply 18. In the event of failure of the auxiliary supply a warning signal may be given, or fail-safe systems within controllers 24,26 may be initiated, or a temporary supply may be switched in from the main supply. <IMAGE>

Description

POWER SUPPLY FOR AUTOMOTIVE ELECTRONIC SYSTEMS.
The present invention relates to power supplies for automotive electronic systems, and in particular, but not exclusively, to power supplies for automotive microprocessors.
It is a common phenomenon that disturbances in computer power supplies disrupt the computer function causing process failure. In automotive applications, where vehicles now often incorporate a plurality of individual microprocessors, it is usual for each microprocessor to be provided with its own ir.tegral power supply circuit. These circuits provide protective isolation from power supply disturbances such as voltage transients and disturbances caused by heavy current devices, e.g motors and relays.
With the advent of multiple microprocessor applications-in vehicles and vessels, e.g. engine, driveline, driver information displays, vehicle suspension and vehicle braking systems, the use of multiple integral power supplies greatly increases the amount of equipment utilized for the purpose of supplying power to the microprocessors. This increase in the amount of power supply equipment presents problems since it increases the probability of a fault occurring in the power supply components that may have to be replaced during routine maintenance and also increases the physical size of the power supply unit (i.e. the unit producing the "clean" electrical supply, often in the form of a microprocessor control module) and therefore increasing the volume occur wed by the power supply unit.
It is important that the power supply for automotive microprocessors should be clean (free from disturbances) and secure, in order to provide the microprocessors with a continuous power source that will not cause a process failure. It would be logistically, financially and practically advantageous if a single clean and secure power supply, isolated -from other heavy current devices, e.g. motors and relays, could be provided to supply all the automotive microprocessors.
In accordance with the present invention, P power supply for an automotive electronic system comprises, in addition to a main alternator-driven supply which is used to power heavy duty sub-systems such as relays, motors, lights, etc., an auxiliary power supply system working in tandem with the main alternator-driven supply, and having its own enginedriven auxiliary alternator to supply power to electronic devices in the vehicle/vessel independently of the main supply.
In one embodiment of the present invention the main alternator and auxiliary alternator are housed in magnetically and electrically isolated sections of a single tandem alternator unit, and share a common engine drive.
Preferably, the auxiliary power supply maintains its own re-chargable battery system, sufficient to supply all vehicle electronic systems, e.g.
microprocessors, together with their sensor and signalling demands. The power supply for actuators and valves etc. is provided by the main vehicle/vessel electrical supply.
In another embodiment of the present invention the auxiliary power supply unit incorporates an auxiliary power failure warning system whereby, in the event of auxiliary power failure, a signal is generated which either initiates a warning signal, initiates a failsafe system within each controller or switches in a temporary supply from the main vehicle electrical supply system.
The invention is described further hereinafter, by way of example only, with reference to the accompanying drawing, which is a schematic diagram of the present invention as applied to automotive microprocessors.
A power supply alternator 10 comprises tandem units 12 and 14, electrically and magnetically isolated by a suitable isolating screen 16. On driving the alternator, one of the isolated alternator units 12 provides a main vehicle electrical power supply 18 and the other isolated unit 14 provides an auxiliary electrical power supply 20. This auxiliary supply 20 maintains a-re-chargeable back-up battery system 22 and provides a power supply 42 for a microprocessor 24 controlling a vehicle suspension system 28, and a power supply 44 for a microprocessor 26 controlling a vehicle braking system 30. The auxiliary supply 20 also provides adequate power for the sensor and signalling demands 34,36 and 32,38 of the microprocessors.
Although the signals 32,38 from the microprocessors 24,26 control the actuators and valves of the suspension system 28 and braking system 30 the power required to drive these. components is provided by the main vehicle electrical power supply 18 via supply route 40.
In the event of an auxiliary power failure the back-up battery system 22 switches in and provides the microprocessors 24,26 with the required electrical power, including the sensor and signalling demands.
Also, an appropriate warning signal, e.g. visual and/or audible, would be given so that an operator of the vehicle in which the system is fitted would be made aware of the presence of a failure.
The invention is not restricted to the details of the foregoing embodiment. For example, the power supply can be utilized for any electronic system, or vehicles or vessels, and the number of microprocessors or electronic systems is not restricted to the number illustrated. The two alternators 12,14 need not be part of a common unit (although this is preferable) but could be physically separate, each with its own drive system.

Claims (5)

1. A power supply for an automotive electronic system comprising, in addition to a main alternatordriven supply which is used to power heavy duty sub-systems, such as relays, motors, lights and the like, an auxiliary power supply system working in tandem with the main alternator-driven supply, and having its own engine-driven auxiliary alternator to provide a protected auxiliary power supply for electronic microprocessor control devices in the vehicle/vessel, independently of the main supply.
2. A power supply as claimed in claim 1, wherein said auxiliary alternator is incorporated in a tandem alternator unit, housing both said auxiliary alternator and said main alternator in electrically and magnetically isolated sections, and sharing a common engine drive.
3. A power supply for automotive electronic systems as claimed in claim 1 or claim 2, wherein said auxiliary power supply maintains a re-chargable battery providing a back-up auxiliary power supply.
4. A power supply for automotive electronic systems as claimed in claim 1, 2 or 3, wherein actuating apparatus controlled by said electronic microprocessor control devices is driven by power from said main vehicle/vessel supply.
5. Apparatus for the supply of power to an automotive electronic system, substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
GB08711179A 1987-05-12 1987-05-12 Power supply for electronic systems on vehicles or vessels Withdrawn GB2205009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08711179A GB2205009A (en) 1987-05-12 1987-05-12 Power supply for electronic systems on vehicles or vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08711179A GB2205009A (en) 1987-05-12 1987-05-12 Power supply for electronic systems on vehicles or vessels

Publications (2)

Publication Number Publication Date
GB8711179D0 GB8711179D0 (en) 1987-06-17
GB2205009A true GB2205009A (en) 1988-11-23

Family

ID=10617191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08711179A Withdrawn GB2205009A (en) 1987-05-12 1987-05-12 Power supply for electronic systems on vehicles or vessels

Country Status (1)

Country Link
GB (1) GB2205009A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754611A1 (en) * 1995-07-18 1997-01-22 Daimler-Benz Aktiengesellschaft Brake and steering system for a vehicle
FR2750660A1 (en) * 1996-07-05 1998-01-09 Renault Management of energy produced by high power alternator on motor vehicle
WO1998001669A1 (en) * 1996-07-03 1998-01-15 Renault System for managing electric energy and alternator for motor vehicle
GB2410481A (en) * 2004-01-30 2005-08-03 Ultra Electronics Ltd Modular aircraft power control system and method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258387A (en) * 1925-07-21 1926-09-23 British Thomson Houston Co Ltd Improvements in and relating to dynamo electric machines
GB283110A (en) * 1927-01-03 1928-07-19 Louis Hemmeler Magneto-electric lighting machine
GB367454A (en) * 1930-11-22 1932-02-22 Atlantic Refining Co Electrical generating system applicable for the electrical propulsion of ships or other vehicles
GB619562A (en) * 1946-11-22 1949-03-10 Scammell Lorries Ltd Electrical operation of auxiliary apparatus mounted on or associated with motor vehicles
US3668419A (en) * 1970-12-30 1972-06-06 Motorola Inc Electrical power source and heat augmentation system for use in automotive vehicles
US3745366A (en) * 1971-11-04 1973-07-10 Gen Electric Dual source auxiliary power supply
US3930197A (en) * 1974-04-25 1975-12-30 Frederick A Saylor Voltage regulator system
EP0057730A1 (en) * 1980-08-19 1982-08-18 Mitsubishi Denki Kabushiki Kaisha Electric generator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258387A (en) * 1925-07-21 1926-09-23 British Thomson Houston Co Ltd Improvements in and relating to dynamo electric machines
GB283110A (en) * 1927-01-03 1928-07-19 Louis Hemmeler Magneto-electric lighting machine
GB367454A (en) * 1930-11-22 1932-02-22 Atlantic Refining Co Electrical generating system applicable for the electrical propulsion of ships or other vehicles
GB619562A (en) * 1946-11-22 1949-03-10 Scammell Lorries Ltd Electrical operation of auxiliary apparatus mounted on or associated with motor vehicles
US3668419A (en) * 1970-12-30 1972-06-06 Motorola Inc Electrical power source and heat augmentation system for use in automotive vehicles
US3745366A (en) * 1971-11-04 1973-07-10 Gen Electric Dual source auxiliary power supply
US3930197A (en) * 1974-04-25 1975-12-30 Frederick A Saylor Voltage regulator system
EP0057730A1 (en) * 1980-08-19 1982-08-18 Mitsubishi Denki Kabushiki Kaisha Electric generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WO A1 87/00703 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754611A1 (en) * 1995-07-18 1997-01-22 Daimler-Benz Aktiengesellschaft Brake and steering system for a vehicle
US6015193A (en) * 1995-07-18 2000-01-18 Daimlerchrysler Ag Braking and steering system for a vehicle
EP0999117A2 (en) * 1995-07-18 2000-05-10 DaimlerChrysler AG Vehicle with brake and steering system
EP0999117A3 (en) * 1995-07-18 2002-12-04 DaimlerChrysler AG Vehicle with brake and steering system
WO1998001669A1 (en) * 1996-07-03 1998-01-15 Renault System for managing electric energy and alternator for motor vehicle
FR2750660A1 (en) * 1996-07-05 1998-01-09 Renault Management of energy produced by high power alternator on motor vehicle
GB2410481A (en) * 2004-01-30 2005-08-03 Ultra Electronics Ltd Modular aircraft power control system and method
GB2410481B (en) * 2004-01-30 2008-06-04 Ultra Electronics Ltd Modular aircraft control system and method
US7580777B2 (en) 2004-01-30 2009-08-25 Ultra Electronics Limited Modular aircraft control system and method

Also Published As

Publication number Publication date
GB8711179D0 (en) 1987-06-17

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)