GB1349933A - Battery charging systems for road vehicles - Google Patents

Battery charging systems for road vehicles

Info

Publication number
GB1349933A
GB1349933A GB3834770A GB3834770A GB1349933A GB 1349933 A GB1349933 A GB 1349933A GB 3834770 A GB3834770 A GB 3834770A GB 3834770 A GB3834770 A GB 3834770A GB 1349933 A GB1349933 A GB 1349933A
Authority
GB
United Kingdom
Prior art keywords
thyristors
field winding
transistor
alternator
resistors
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.)
Expired
Application number
GB3834770A
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
Joseph 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, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB3834770A priority Critical patent/GB1349933A/en
Priority to AU31564/71A priority patent/AU464959B2/en
Priority to ES394120A priority patent/ES394120A1/en
Priority to DE712139235A priority patent/DE2139235C3/en
Priority to JP5909971A priority patent/JPS474377A/ja
Publication of GB1349933A publication Critical patent/GB1349933A/en
Expired 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
    • H02J7/16—Regulation of the charging current or voltage by variation of field
    • H02J7/24—Regulation of the charging current or voltage by variation of field using discharge tubes or semiconductor devices
    • H02J7/2437—Regulation of the charging current or voltage by variation of field using discharge tubes or semiconductor devices using thyristors or triacs as final control devices
    • 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 Eletrric Generators (AREA)
  • Control Of Charge By Means Of Generators (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

1349933 Charging batteries JOSEPH LUCAS (INDUSTRIES) Ltd 16 July 1971 [8 Aug 1970] 38347/70 Heading H2H An electrical system for a road vehicle comprises an alternator 12, having a wound field winding 21, the alternator being arranged to charge the vehicle battery 11 by way of a full-wave rectifier 13, the system being provided with means whereby the field winding 21 is energized only when the battery voltage is below a predetermined value. The field winding 21 is energized by way of three thyristors 14, 15, 16 which are connected to the phase points of the alternator 12, gating signals being applied to the thyristors by a circuit sensitive to the battery voltage. Resistors 24, 25 are connected across the battery 11 such that when the battery voltage is below a predetermined value a Zener diode 26 is non-conductive and hence a transistor 27 is non-conductive. Gate current thus flows through a resistor 31 to the gates of the thyristors thereby causing the field winding 21 to be energized. When a predetermined voltage is reached the Zener diode 26 conducts, the transistor 27 then becoming conductive, thus removing the gate current from the thyristors to de-energize the field winding 21. A capacitor 29 is connected to the base of the transistor 27 to render the transistor unsusceptible to transients and resistors 35, 36, 37 are provided to minimize the difference in gate cathode voltages required to fire the thyristors. A resistor 38 is provided to provide energization of the field winding 21 at starting when the ignition switch 22 is closed and resistors 17, 18, 19 are provided to minimize the risk of the thyristors being turned on by transients.
GB3834770A 1970-08-08 1970-08-08 Battery charging systems for road vehicles Expired GB1349933A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3834770A GB1349933A (en) 1970-08-08 1970-08-08 Battery charging systems for road vehicles
AU31564/71A AU464959B2 (en) 1970-08-08 1971-07-22 Battery charging systems for road vehicles
ES394120A ES394120A1 (en) 1970-08-08 1971-07-23 Battery charging systems for road vehicles
DE712139235A DE2139235C3 (en) 1970-08-08 1971-08-05 Battery charger in a motor vehicle
JP5909971A JPS474377A (en) 1970-08-08 1971-08-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3834770A GB1349933A (en) 1970-08-08 1970-08-08 Battery charging systems for road vehicles

Publications (1)

Publication Number Publication Date
GB1349933A true GB1349933A (en) 1974-04-10

Family

ID=10402881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3834770A Expired GB1349933A (en) 1970-08-08 1970-08-08 Battery charging systems for road vehicles

Country Status (5)

Country Link
JP (1) JPS474377A (en)
AU (1) AU464959B2 (en)
DE (1) DE2139235C3 (en)
ES (1) ES394120A1 (en)
GB (1) GB1349933A (en)

Also Published As

Publication number Publication date
AU464959B2 (en) 1975-09-11
DE2139235C3 (en) 1979-03-01
DE2139235A1 (en) 1972-02-17
JPS474377A (en) 1972-03-03
DE2139235B2 (en) 1978-07-06
ES394120A1 (en) 1974-03-01
AU3156471A (en) 1973-01-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee