GB1204387A - Improvements in or relating to pressure transducers for use in charging batteries - Google Patents

Improvements in or relating to pressure transducers for use in charging batteries

Info

Publication number
GB1204387A
GB1204387A GB5371867A GB5371867A GB1204387A GB 1204387 A GB1204387 A GB 1204387A GB 5371867 A GB5371867 A GB 5371867A GB 5371867 A GB5371867 A GB 5371867A GB 1204387 A GB1204387 A GB 1204387A
Authority
GB
United Kingdom
Prior art keywords
charging
battery
gas
pressure
transducer
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
GB5371867A
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.)
Dynamic Instrument Corp
Original Assignee
Dynamic Instrument Corp
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 Dynamic Instrument Corp filed Critical Dynamic Instrument Corp
Priority to GB5371867A priority Critical patent/GB1204387A/en
Publication of GB1204387A publication Critical patent/GB1204387A/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
    • H02J7/22—Regulation of the charging current or voltage by variation of field due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
    • G01L9/0058—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of pressure sensitive conductive solid or liquid material, e.g. carbon granules
    • 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

Abstract

1,204,387. Automatic voltage control. DYNAMIC INSTRUMENT CORP. Nov.25, 1967, No.53718/67. Heading G3R. [Also in Divisions G1 and H2] A battery charging system comprises a pressure sensitive transducer responsive to the pressure of the gas produced in the battery during the charging process thereby to control the charging current and hence the production of gas. The transducer 10 comprises a body portion 11 affixed to a battery 17 together with a diaphragm 22 carrying a carbon disc 24 which discs cooperate with terminals 25, 26 to form a resistor the resistance of which varies with pressure of the gas in the battery 17 on the diaphragm 22. An orifice 20 is provided to prevent damage should the gas-pressure become excessive. The charging apparatus comprises a generator 27 having a field winding 29 controlled by a regulating device 34, 44, 45, the operation of which is determined by the transducer resistive element which is connected in parallel with a resistor 36 in series with the operating coil 34 of the field regulator. Initially, with a low gas-pressure in the battery 17, the diaphragm 22 will be in its normal condition and the resistance of the transducer will be infinite. In this condition the regulator 34, 44, 45 will operate to produce maximum output from the generator 27 and thus, maximum charging current. As the gas-pressure in the battery 17 rises the resistance of the transducer gradually decreases thereby causing the regulator 34, 44, 45 to operate such that the generator 27 produces a decreasing charging current until a stable charging and gas producing process is attained. The state of charge of the battery 17 is reflected in the value of charging current required to maintain a given gas-pressure in the battery during charging. Thus an ammeter 38 may be connected in the charging circuit and calibrated in terms of the state of charge. In other embodiments the charging apparatus may comprise conventional voltage control, current control and cut-out devices or may comprise a three phase generator/ rectifier device with a control arrangement including transistors.
GB5371867A 1967-11-25 1967-11-25 Improvements in or relating to pressure transducers for use in charging batteries Expired GB1204387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5371867A GB1204387A (en) 1967-11-25 1967-11-25 Improvements in or relating to pressure transducers for use in charging batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5371867A GB1204387A (en) 1967-11-25 1967-11-25 Improvements in or relating to pressure transducers for use in charging batteries

Publications (1)

Publication Number Publication Date
GB1204387A true GB1204387A (en) 1970-09-09

Family

ID=10468757

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5371867A Expired GB1204387A (en) 1967-11-25 1967-11-25 Improvements in or relating to pressure transducers for use in charging batteries

Country Status (1)

Country Link
GB (1) GB1204387A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124777A (en) * 1982-08-02 1984-02-22 Illinois Tool Works Force or pressure sensitive devices
GB2305292A (en) * 1995-09-18 1997-04-02 Nokia Mobile Phones Ltd Pressure sensing device located within a sealed cell wall controls charging current
WO2011088325A1 (en) * 2010-01-15 2011-07-21 G4 Synergetics, Inc. Methods and systems for measuring state of charge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124777A (en) * 1982-08-02 1984-02-22 Illinois Tool Works Force or pressure sensitive devices
GB2305292A (en) * 1995-09-18 1997-04-02 Nokia Mobile Phones Ltd Pressure sensing device located within a sealed cell wall controls charging current
GB2305292B (en) * 1995-09-18 1999-02-10 Nokia Mobile Phones Ltd Recharging electrical cells
WO2011088325A1 (en) * 2010-01-15 2011-07-21 G4 Synergetics, Inc. Methods and systems for measuring state of charge

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees