GB1128165A - Apparatus for indicating the state of charge of secondary batteries - Google Patents

Apparatus for indicating the state of charge of secondary batteries

Info

Publication number
GB1128165A
GB1128165A GB15284/65A GB1528465A GB1128165A GB 1128165 A GB1128165 A GB 1128165A GB 15284/65 A GB15284/65 A GB 15284/65A GB 1528465 A GB1528465 A GB 1528465A GB 1128165 A GB1128165 A GB 1128165A
Authority
GB
United Kingdom
Prior art keywords
battery
april
cut
transistors
charge
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
GB15284/65A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB15284/65A priority Critical patent/GB1128165A/en
Priority to FR57122A priority patent/FR1476087A/en
Publication of GB1128165A publication Critical patent/GB1128165A/en
Expired 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/04—Voltage dividers
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

1,128,165. Battery testing. H. MORTON. April 4, 1966 [April 9, 1965], No. 15284/65. Heading G1U. [Also in Division H3] A battery tester comprises a pair of normally conducting transistors TR1, TR2 and a normally cut-off transistor TR3. A fall in battery e. m. f. reduces the negative bias on TR1 until, at a point determined by variable resistor R3, transistors TR1 and TR2 cut-off to switch on oscillator TR3 producing an audible output at 6. The time constant of R3, R4, R5, C2 is adjusted to eliminate the effects of short transients, and in order to compensate for the reduced battery voltage on heavy load, the bias on TR2 is made dependent on the load current by means of resistor R10. This compensation circuit may be omitted, Fig. 1, (not shown)
GB15284/65A 1965-04-09 1965-04-09 Apparatus for indicating the state of charge of secondary batteries Expired GB1128165A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB15284/65A GB1128165A (en) 1965-04-09 1965-04-09 Apparatus for indicating the state of charge of secondary batteries
FR57122A FR1476087A (en) 1965-04-09 1966-04-08 Battery discharge indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15284/65A GB1128165A (en) 1965-04-09 1965-04-09 Apparatus for indicating the state of charge of secondary batteries

Publications (1)

Publication Number Publication Date
GB1128165A true GB1128165A (en) 1968-09-25

Family

ID=10056344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15284/65A Expired GB1128165A (en) 1965-04-09 1965-04-09 Apparatus for indicating the state of charge of secondary batteries

Country Status (2)

Country Link
FR (1) FR1476087A (en)
GB (1) GB1128165A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2518038A1 (en) * 1974-04-24 1975-11-13 Suwa Seikosha Kk ELECTRONIC CLOCK
US4306270A (en) * 1978-09-05 1981-12-15 Nartron Corporation Electrical system monitoring means

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3361343D1 (en) * 1982-07-08 1986-01-09 Thorn Emi Instr Measuring instrument having low charge detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2518038A1 (en) * 1974-04-24 1975-11-13 Suwa Seikosha Kk ELECTRONIC CLOCK
US4306270A (en) * 1978-09-05 1981-12-15 Nartron Corporation Electrical system monitoring means

Also Published As

Publication number Publication date
FR1476087A (en) 1967-04-07

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