GB9309829D0 - A battery charging saturation detecting circuit - Google Patents

A battery charging saturation detecting circuit

Info

Publication number
GB9309829D0
GB9309829D0 GB939309829A GB9309829A GB9309829D0 GB 9309829 D0 GB9309829 D0 GB 9309829D0 GB 939309829 A GB939309829 A GB 939309829A GB 9309829 A GB9309829 A GB 9309829A GB 9309829 D0 GB9309829 D0 GB 9309829D0
Authority
GB
United Kingdom
Prior art keywords
voltage
comparator
battery
charged
pin
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.)
Withdrawn
Application number
GB939309829A
Other versions
GB2278022A (en
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.)
LEAD ELECTRONIC CO Ltd
E Lead Electronic Co Ltd
Original Assignee
LEAD ELECTRONIC CO Ltd
E Lead Electronic Co 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
Priority to JP026379U priority Critical patent/JPH0677448U/en
Application filed by LEAD ELECTRONIC CO Ltd, E Lead Electronic Co Ltd filed Critical LEAD ELECTRONIC CO Ltd
Priority to GB9309829A priority patent/GB2278022A/en
Priority to DE9307801U priority patent/DE9307801U1/de
Publication of GB9309829D0 publication Critical patent/GB9309829D0/en
Publication of GB2278022A publication Critical patent/GB2278022A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient

Abstract

A first input pin 11 of a comparator 10 works to constantly detect the voltage of a battery 20 being charged, and the detected voltage is transmitted, via voltage reduction resistors R1, R2 (R2 >> R1), to the second input pin 12 of the comparator 10 so as to charge a memory capacitor 30. A fixed-value voltage dropping unit 50 may be in parallel connection to the voltage reduction resistors R1, R2 to keep the voltage difference between the first and second pins 11, 12 at a small value. When a charged battery is charged to saturation and the voltage thereof drops, the voltages of the first and second pins 11, 12 of the comparator 10 drop at the same time, but the voltage at the second pin 12 is affected by the memory capacitor 30 and drops at a lower speed than the first pin 11 causing the comparator output to change state and turn off the charger 40. The unit 50 may be a diode or a zener diode. The battery voltage may be applied to the detector via an amplifier (60),(Fig 3), to improve the detection sensitivity. <IMAGE>
GB9309829A 1993-04-12 1993-05-13 Circuit for detecting charged state of a battery by sensing -DELTA V Withdrawn GB2278022A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP026379U JPH0677448U (en) 1993-04-12 1993-04-12 Battery saturation charge detection circuit
GB9309829A GB2278022A (en) 1993-04-12 1993-05-13 Circuit for detecting charged state of a battery by sensing -DELTA V
DE9307801U DE9307801U1 (en) 1993-04-12 1993-05-24

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP026379U JPH0677448U (en) 1993-04-12 1993-04-12 Battery saturation charge detection circuit
GB9309829A GB2278022A (en) 1993-04-12 1993-05-13 Circuit for detecting charged state of a battery by sensing -DELTA V
DE9307801U DE9307801U1 (en) 1993-04-12 1993-05-24

Publications (2)

Publication Number Publication Date
GB9309829D0 true GB9309829D0 (en) 1993-06-23
GB2278022A GB2278022A (en) 1994-11-16

Family

ID=49585855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9309829A Withdrawn GB2278022A (en) 1993-04-12 1993-05-13 Circuit for detecting charged state of a battery by sensing -DELTA V

Country Status (3)

Country Link
JP (1) JPH0677448U (en)
DE (1) DE9307801U1 (en)
GB (1) GB2278022A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101373903B (en) * 2008-06-19 2010-06-02 何岳明 Charging control circuit for charging battery
CN112415294A (en) * 2019-08-22 2021-02-26 上海中兴软件有限责任公司 Detection circuit for instantaneous voltage drop and vehicle-mounted diagnosis system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665370A (en) * 1980-09-15 1987-05-12 Holland John F Method and apparatus for monitoring and indicating the condition of a battery and the related circuitry

Also Published As

Publication number Publication date
GB2278022A (en) 1994-11-16
JPH0677448U (en) 1994-10-28
DE9307801U1 (en) 1993-07-22

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)