GB1197086A - Improvements relating to Charging of Storage Batteries - Google Patents

Improvements relating to Charging of Storage Batteries

Info

Publication number
GB1197086A
GB1197086A GB33033/67A GB3303367A GB1197086A GB 1197086 A GB1197086 A GB 1197086A GB 33033/67 A GB33033/67 A GB 33033/67A GB 3303367 A GB3303367 A GB 3303367A GB 1197086 A GB1197086 A GB 1197086A
Authority
GB
United Kingdom
Prior art keywords
thermistor
battery
temperature
bridge
hence
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
GB33033/67A
Inventor
Frederick John Cook
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.)
Catylators Ltd
Original Assignee
Catylators 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 Catylators Ltd filed Critical Catylators Ltd
Priority to GB33033/67A priority Critical patent/GB1197086A/en
Priority to DE19671588117 priority patent/DE1588117A1/en
Priority to FR1570292D priority patent/FR1570292A/fr
Priority to SE09481/68A priority patent/SE330568B/xx
Priority to NL6809787A priority patent/NL6809787A/xx
Priority to AT675368A priority patent/AT282769B/en
Priority to CH1042868A priority patent/CH466389A/en
Priority to BE718233D priority patent/BE718233A/xx
Publication of GB1197086A publication Critical patent/GB1197086A/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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery

Landscapes

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

Abstract

1,197,086. Overcharge protection for batteries. CATYLATORS Ltd. 13 May, 1968 [18 July, 1967], No. 33033/67. Heading H2H. A battery charging circuit comprises a temperature sensitive bridge having two fixed ratio arms, a third arm having a first thermistor T1 and an arm including a second thermistor T2 and a resistor R3, the thermistors being influenced by the temperature of a battery, one diagonal of the bridge circuit being connected to a source of constant D.C. current and the other diagonal to a means through which the battery is charged. Thermistor T1 has a higher resistance than that of thermistor T2 at the same temperature, and T1 may be exposed to hydrogen gas evolved from the battery. The thermistors will be equally effected by ambient temperature hence providing compensation for this effect. After connection of a supply and a battery to the circuit thermistor T1 will heat up more than thermistor T2 hence its resistance will fall more than that of the latter, thus the bridge circuit passes to an out-of-balance condition giving an output of the polarity indicated hence charging the battery. Hydrogen evolved from the battery on the gassing will cool the thermistor T1 returning the bridge towards a condition of balance which reduces the charging current. In low temperature ambient conditions the resistances of thermistors T1, T2 will be too high hence Zener diodes Z1 Z2 provide a bypass so the output voltage at terminals 2 temporarily reverses in sign until the resistance of thermistor T1 falls. If the battery temperature should become sufficiently high the output from the bridge will be zero. Terminals 2 are connected to a device controlling charging current.
GB33033/67A 1967-07-18 1967-07-18 Improvements relating to Charging of Storage Batteries Expired GB1197086A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB33033/67A GB1197086A (en) 1967-07-18 1967-07-18 Improvements relating to Charging of Storage Batteries
DE19671588117 DE1588117A1 (en) 1967-07-18 1967-10-18 Battery charger
FR1570292D FR1570292A (en) 1967-07-18 1968-06-27
SE09481/68A SE330568B (en) 1967-07-18 1968-07-10
NL6809787A NL6809787A (en) 1967-07-18 1968-07-10
AT675368A AT282769B (en) 1967-07-18 1968-07-12 Monitoring device for battery charging
CH1042868A CH466389A (en) 1967-07-18 1968-07-12 Device for controlling the charge of a battery
BE718233D BE718233A (en) 1967-07-18 1968-07-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33033/67A GB1197086A (en) 1967-07-18 1967-07-18 Improvements relating to Charging of Storage Batteries

Publications (1)

Publication Number Publication Date
GB1197086A true GB1197086A (en) 1970-07-01

Family

ID=10347622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33033/67A Expired GB1197086A (en) 1967-07-18 1967-07-18 Improvements relating to Charging of Storage Batteries

Country Status (8)

Country Link
AT (1) AT282769B (en)
BE (1) BE718233A (en)
CH (1) CH466389A (en)
DE (1) DE1588117A1 (en)
FR (1) FR1570292A (en)
GB (1) GB1197086A (en)
NL (1) NL6809787A (en)
SE (1) SE330568B (en)

Also Published As

Publication number Publication date
AT282769B (en) 1970-07-10
SE330568B (en) 1970-11-23
BE718233A (en) 1968-12-31
FR1570292A (en) 1969-06-06
DE1588117A1 (en) 1970-12-17
CH466389A (en) 1968-12-15
NL6809787A (en) 1969-01-21

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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