GB2128044A - Circuit arrangements for the rapid charging of a battery of a vehicle electrical system - Google Patents

Circuit arrangements for the rapid charging of a battery of a vehicle electrical system Download PDF

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Publication number
GB2128044A
GB2128044A GB08326201A GB8326201A GB2128044A GB 2128044 A GB2128044 A GB 2128044A GB 08326201 A GB08326201 A GB 08326201A GB 8326201 A GB8326201 A GB 8326201A GB 2128044 A GB2128044 A GB 2128044A
Authority
GB
United Kingdom
Prior art keywords
battery
electrical system
generator
voltage
charging
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.)
Granted
Application number
GB08326201A
Other versions
GB2128044B (en
GB8326201D0 (en
Inventor
Wunibald Frey
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 GB8326201D0 publication Critical patent/GB8326201D0/en
Publication of GB2128044A publication Critical patent/GB2128044A/en
Application granted granted Critical
Publication of GB2128044B publication Critical patent/GB2128044B/en
Expired legal-status Critical Current

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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
    • H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
    • H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
    • 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
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Landscapes

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

Abstract

A storage battery 5 is pulse- charged by connecting it via a voltage regulator 4 to a generator 1 which is driven by the vehicle engine 6 and which is operated in a fully excited state so that it has a non-regulated output voltage which increases with increase in its driver speed. The pulse-charging duty ratio can be charged when a high discharge current is measured. The duty ratio can also be varied in response to a timer or to the state of charge of the battery 5. A constant voltage is supplied by regulator 4 to a buffer battery 2 and loads 3. When the generator 1 is idling or not operating, battery 5 is connected to battery 2 by a voltage - or speed - dependent switch 7. <IMAGE>

Description

SPECIFICATION Improvements in or relating to circuit arrangements for the rapid or accelerated charging of a floating battery of a vehicle electrical system The invention relates to circuit arrangements for the rapid or accelerated charging of a floating or buffer battery of a vehicle electrical system whose loads are connectible to the floating battery, the vehicle electrical system containing a generator which supplies a direct current and which is driven by the vehicle engine and whose output voltage when fully excited and non regulated increases with increase in driven speed.
The object of the invention is to achieve an accelerated or rapid recharging of the battery during travelling operation, particularly after a preceding discharge caused during, for example, a halt at traffic lights. At the same time, the charging balance should be ensured when the speed of the engine is reduced to idling speed, the charging balance should be ensured particularly during start-stop operation, during overrun operation, during idling operation etc., that is to say in such operating conditions in which the engine is switched off for a long period of time such as when the vehicle is halted at traffic lights or is parked, and the generator is consequently not being driven.
According to the present invention there is provided a circuit arrangement for the rapid or accelerated charging of a battery of a vehicle electrical system, in which a voltage regulator is connected between the battery and a generator which supplies a direct current and which is driven by the vehicle engine and which when fully excited has a non-regulated output voltage which increases with increase in its driven speed and the voltage regulator connects the battery to the generator for pulse-like charging in a predetermined rhythm.
In operation, the generator in a vehicle electrical system, particularly an electrical system of a passenger motor vehicle, is driven at varying rotational speeds with maximum, constant excitation which can be produced electromagnetically or by means of a permanent magnet field, and supplies a generator output voltage which is at least approximately proportional to the driven speed of the generator. The voltage of the electrical system is maintained constant at a predetermined value of, for example, 14 volts by means of the electrical or electronic voltage regulator which is disposed at the three-phase current side or direct current side of the generator.
The electrical system comprises loads which can be connected selectively or permanently in parallel with a floating battery.
Preferably, said battery is a storage battery which is provided in addition to a floating or buffer battery of the electrical system and is connected to a second output of the voltage regulator and is connectible to the floating or buffer battery by way of a speed-dependent or voltage dependent switch.
A signal derived from one phase of the generator can thereby detect whether the generator is stationary or is being driven at a low rotational speed when, for example, the engine is idling. The discharge current of the battery is measured during such quiecent state. In the case of a high discharge current, the duty ratio can then be changed such that a battery charging current is obtained which has a higher average value with respect to time.
A timing member (in the case of a longer journey until the next stop) or detection of the state of charge of the storage battery can be used as a correction variable for varying the duty ratio. When the generator is not running, the storage battery is connected in parallel with the floating or buffer battery by way of electromechanical or electronic means and supplies the electrical system during,for example, starting, or supplies the loads of the electrical system when the engine is idling.
When charging the battery, accelerated or rapid changing can be achieved by pulse charging with a high amplitude particularly at low temperatures. The plates of the battery are heated as a result of the high current amplitude, so that the mixing of the acid in the battery is at the same time improved by natural convection. The pulse width can be chosen such that there is no local overheating which would lead to the formation of bubbles.The electrical system is only partially supplied by the generator when the engine idling speeds are very low or during start-stop operation (for example when the vehicle stopped at traffic lights), and the floating or buffer battery is thereby partially discharged. by way of example, when 40% of town travel involves halts at traffic lights, and with a given constant charging voltage, the battery is not able to recoup the charging loss during the remaining travelling time (60%), even if a corresponding supply of current is available from the generator.
An arrangement embodying the present invention has the advantage of compensating for the charging loss again during the remaining travelling time by pulse charging with a high amplitude. In addition, the efficiency and the output of the generator are increased by the non-regulated voltage of the generator when fully excited.
The invention will be further described by way of example, with reference to the accompanying drawing, which is a circuit diagram of one embodiment of the invention.
The circuit diagram illustrates a vehicle electrical system comprising a generator 1, a buffer or floating battery 2, a plurality of loads indicated at 3 and connectible in parallel with the floating battery 2 during operation of the motor vehicle (not illustrated), a voltage regulator 4, and a storage battery 5.
The generator 1 is driven by the internal combustion engine 6 of the vehicle (not illustrated) and is permanently fully excited either by a fixed excitation current taken from the floating battery 2 or by a permanent magnetic field produced in the generator by permanent magnets which are not illustrated in the drawings.
The function of the voltage regulator 4 is to ensure a constant electrical system voltage of, for example, 14 volts. The voltage regulator 4 has a second output ot which the storage battery 5 is connected. The storage battery receives charging current pulses with a charging voltage substantially in excess of 14 volts in a predetermined rhythm and/or a rhythm regulated in dependence upon the state of charge of the storage battery, and can consequently be rapidly recharged when it has to charge the floating battery 2 in order to meet the power requirement of the vehicle electrical system when the engine 6 is not running or when it is idling for a long period of time.
When the generator 1 is not operating or when it is idling the storage battery 5 can be connected to the buffer or floating battery 2 by way of a switch 7 which, for example, is dependent upon speed or upon the voltage of the generator 1.

Claims (3)

1. A circu it arrangement for the rapid or accelerated charging of a battery of a vehicle electrical system, in which a voltage regulator is connected between the battery and a generator which supplies a direct current and which is driven by the vehicle engine and which when fully excited has a non-regulated output voltage which increases with increase in its driven speed, and the voltage regulator connects the battery to the generator for pulse-like charging in a predetermined rhythm.
2. An arrangement as claimed in claim 1, in which said battery is a storage battery which is provided in addition to a buffer or floating battery of the electrical system and is connected to a second output of the voltage regulator and is connectible to the buffer or floating battery by way of a speed-dependent or voltage-dependent switch.
3. A circuit arrangement for the rapid or accelerated charging of a battery of a vehicle electrical system, constructed and arranged and adapted to operate substantially as hereinbefore particularly described with reference to and as illustrated in the accompanying drawing.
GB08326201A 1982-10-02 1983-09-30 Circuit arrangements for the rapid charging of a battery of a vehicle electrical system Expired GB2128044B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823236607 DE3236607A1 (en) 1982-10-02 1982-10-02 CIRCUIT FOR CHARGING THE RECHARGEABLE BATTERY BATTERY OF A VEHICLE FOLDER NETWORK

Publications (3)

Publication Number Publication Date
GB8326201D0 GB8326201D0 (en) 1983-11-02
GB2128044A true GB2128044A (en) 1984-04-18
GB2128044B GB2128044B (en) 1986-08-06

Family

ID=6174830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08326201A Expired GB2128044B (en) 1982-10-02 1983-09-30 Circuit arrangements for the rapid charging of a battery of a vehicle electrical system

Country Status (4)

Country Link
JP (1) JPS5983542A (en)
DE (1) DE3236607A1 (en)
FR (1) FR2534081B1 (en)
GB (1) GB2128044B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236917A (en) * 1989-10-12 1991-04-17 Peter Richard Stott Battery charging
WO1999022434A1 (en) * 1997-10-27 1999-05-06 Johnson Controls Technology Company Method and circuit for controlling charging in a dual battery electrical system
US6057666A (en) * 1997-09-17 2000-05-02 Johnson Controls Technology Company Method and circuit for controlling charging in a dual battery electrical system
US6222341B1 (en) 1997-09-17 2001-04-24 Johnson Controls Technology Company Dual battery charge maintenance system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1429441A3 (en) 2002-12-12 2006-10-11 Robert Bosch Gmbh Method of charging a battery

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1144126A (en) * 1965-07-16 1969-03-05 Lucas Industries Ltd Battery charging systems
GB1162505A (en) * 1965-12-29 1969-08-27 Accumulateurs Fixes Quickly Bringing a Second Source of Direct Current into Operation to Continue to Supply a Load when a First Source of Direct Current Previously Feeding it has Failed.
GB1166867A (en) * 1966-03-25 1969-10-15 Lucas Industries Ltd Battery Charging Systems
GB1239766A (en) * 1968-01-29 1971-07-21 Lucas Industries Ltd Battery charging systems
GB1276103A (en) * 1969-10-01 1972-06-01 Syncro Corp Heat sink construction for electrical generator
GB1358056A (en) * 1971-08-13 1974-06-26 Yuasa Battery Co Ltd Battery charging equipment
EP0049102A1 (en) * 1980-09-25 1982-04-07 Tecumseh Products Company Internal combustion engine electrical systems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089073A (en) * 1958-02-28 1963-05-07 Fox Prod Co Electrical systems
FR1469141A (en) * 1965-12-28 1967-02-10 Accumulateurs Fixes Electrical power supply system for vehicles and machines with internal combustion engines
BE791646A (en) * 1971-12-31 1973-03-16 Berliet Automobiles ELECTRONIC TACHOMETRIC SWITCH
JPS5310771Y2 (en) * 1974-08-20 1978-03-23
DE2831588A1 (en) * 1977-07-20 1979-02-01 Simmet Snc CENTRAL FEEDING DEVICE, IN PARTICULAR FOR COMMERCIAL AND TRAVEL VEHICLES, E.G. FOR DELIVERY VEHICLES, MOTOR CARAVANS, CAMPING VANS AND BOATS
GB2015212B (en) * 1978-01-24 1982-08-18 Nada Electronics Ltd Voltage regulation
GB2036468B (en) * 1978-02-13 1982-08-25 Pettersson D Battery separator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1144126A (en) * 1965-07-16 1969-03-05 Lucas Industries Ltd Battery charging systems
GB1162505A (en) * 1965-12-29 1969-08-27 Accumulateurs Fixes Quickly Bringing a Second Source of Direct Current into Operation to Continue to Supply a Load when a First Source of Direct Current Previously Feeding it has Failed.
GB1166867A (en) * 1966-03-25 1969-10-15 Lucas Industries Ltd Battery Charging Systems
GB1239766A (en) * 1968-01-29 1971-07-21 Lucas Industries Ltd Battery charging systems
GB1276103A (en) * 1969-10-01 1972-06-01 Syncro Corp Heat sink construction for electrical generator
GB1358056A (en) * 1971-08-13 1974-06-26 Yuasa Battery Co Ltd Battery charging equipment
EP0049102A1 (en) * 1980-09-25 1982-04-07 Tecumseh Products Company Internal combustion engine electrical systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236917A (en) * 1989-10-12 1991-04-17 Peter Richard Stott Battery charging
US6057666A (en) * 1997-09-17 2000-05-02 Johnson Controls Technology Company Method and circuit for controlling charging in a dual battery electrical system
US6222341B1 (en) 1997-09-17 2001-04-24 Johnson Controls Technology Company Dual battery charge maintenance system and method
WO1999022434A1 (en) * 1997-10-27 1999-05-06 Johnson Controls Technology Company Method and circuit for controlling charging in a dual battery electrical system

Also Published As

Publication number Publication date
GB2128044B (en) 1986-08-06
FR2534081B1 (en) 1990-03-23
GB8326201D0 (en) 1983-11-02
JPS5983542A (en) 1984-05-15
DE3236607A1 (en) 1984-04-05
FR2534081A1 (en) 1984-04-06
DE3236607C2 (en) 1991-09-12
JPH0421419B2 (en) 1992-04-10

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19941007

PE20 Patent expired after termination of 20 years