GB1382246A - Battery charging circuits - Google Patents

Battery charging circuits

Info

Publication number
GB1382246A
GB1382246A GB1496271A GB1496271A GB1382246A GB 1382246 A GB1382246 A GB 1382246A GB 1496271 A GB1496271 A GB 1496271A GB 1496271 A GB1496271 A GB 1496271A GB 1382246 A GB1382246 A GB 1382246A
Authority
GB
United Kingdom
Prior art keywords
thyristor
battery
source
capacitor
inductor
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
GB1496271A
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.)
Sevcon Ltd
Original Assignee
Sevcon 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 Sevcon Ltd filed Critical Sevcon Ltd
Priority to GB1496271A priority Critical patent/GB1382246A/en
Publication of GB1382246A publication Critical patent/GB1382246A/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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

1382246 Charging batteries SEVCON Ltd 12 May 1972 [14 May 1971] 14962/71 Heading H2H A circuit for charging a battery having a terminal voltage higher than that of the supply source comprises means whereby energy can be stored in the inductive content of the circuit which energy is then supplied to the battery. A battery 21 is arranged to be charged from a source 1 by way of an inductor 3 and a thyristor 15, the battery having a terminal voltage higher than the voltage of the source. When a thyristor 9 is rendered conductive a capacitor 7 charges up to a given voltage whereupon thyristor 9 extinguishes. Thyristors 5, 11 are now rendered conductive whereupon the charge on the capaci- tor 7 is reversed and the thyristor 11 extinguishes. At the same time a gradually increasing current flows in the inductor 3 by way of the thyristor 5. The thyristor 9 is again rendered conductive to whereupon the capacitor 7 causes the thyristor 5 to extinguish and the capacitor 7 recharges from the source 1. When the charge on the capacitor reaches a given value a diode 27 becomes forward biased and a transistor 29 turns on causing a second transistor 31 to turn on. Turning on of this transistor 31 causes a current pulse to flow in the primary winding 33 of a transformer from a stabilized current source 37. A pulse is thereby induced in the secondary winding 39 of the transformer such as to cause conduction of the thyristor 15 thus to allow the energy stored in the inductor 3 to be passed to the battery 21, the cycle then being repeated. The control circuitry for switching the thyristors 5, 9, 11 into conduction is as described in Specification 1,301,852.
GB1496271A 1971-05-14 1971-05-14 Battery charging circuits Expired GB1382246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1496271A GB1382246A (en) 1971-05-14 1971-05-14 Battery charging circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1496271A GB1382246A (en) 1971-05-14 1971-05-14 Battery charging circuits

Publications (1)

Publication Number Publication Date
GB1382246A true GB1382246A (en) 1975-01-29

Family

ID=10050631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1496271A Expired GB1382246A (en) 1971-05-14 1971-05-14 Battery charging circuits

Country Status (1)

Country Link
GB (1) GB1382246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283377B (en) * 1993-10-29 1998-03-04 Gardiner Technology Ltd Burglar alarm apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283377B (en) * 1993-10-29 1998-03-04 Gardiner Technology Ltd Burglar alarm apparatus

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees