FR2435043A1 - Accumulator terminal voltage and electrolyte level indicator - uses operational amplifier circuits to monitor battery charging or discharge states - Google Patents

Accumulator terminal voltage and electrolyte level indicator - uses operational amplifier circuits to monitor battery charging or discharge states

Info

Publication number
FR2435043A1
FR2435043A1 FR7824867A FR7824867A FR2435043A1 FR 2435043 A1 FR2435043 A1 FR 2435043A1 FR 7824867 A FR7824867 A FR 7824867A FR 7824867 A FR7824867 A FR 7824867A FR 2435043 A1 FR2435043 A1 FR 2435043A1
Authority
FR
France
Prior art keywords
circuit
battery
terminal voltage
voltage
operational amplifier
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.)
Granted
Application number
FR7824867A
Other languages
French (fr)
Other versions
FR2435043B3 (en
Inventor
Pierre Belot
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.)
SAFT Societe des Accumulateurs Fixes et de Traction SA
Original Assignee
SAFT Societe des Accumulateurs Fixes et de Traction SA
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 SAFT Societe des Accumulateurs Fixes et de Traction SA filed Critical SAFT Societe des Accumulateurs Fixes et de Traction SA
Priority to FR7824867A priority Critical patent/FR2435043A1/en
Publication of FR2435043A1 publication Critical patent/FR2435043A1/en
Application granted granted Critical
Publication of FR2435043B3 publication Critical patent/FR2435043B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
    • G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

An oscillator (G) imposes a 2-3 kHz signal on a circuit loop containing a reference electrode (Q) in the battery. The potential of the output of a high pass filter indicates whether or not the electrode is immersed in the electrolyte. Acting in a similar fashion, a parallel circuit produces a voltage which indicates the existence and level, compared with a reference threshold, of any leak to earth in the battery circuit. Reference voltage circuit and voltage comparators monitor the battery terminal voltage via the potentiometer chain. The battery charge state is indicated by a switching circuit and delay circuits so that sustained departures beyond the upper and lower thresholds can be signalled. All circuit conditions are indicated by LED's (V1-V5) fed by a constant current source (Z).
FR7824867A 1978-08-29 1978-08-29 Accumulator terminal voltage and electrolyte level indicator - uses operational amplifier circuits to monitor battery charging or discharge states Granted FR2435043A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7824867A FR2435043A1 (en) 1978-08-29 1978-08-29 Accumulator terminal voltage and electrolyte level indicator - uses operational amplifier circuits to monitor battery charging or discharge states

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7824867A FR2435043A1 (en) 1978-08-29 1978-08-29 Accumulator terminal voltage and electrolyte level indicator - uses operational amplifier circuits to monitor battery charging or discharge states

Publications (2)

Publication Number Publication Date
FR2435043A1 true FR2435043A1 (en) 1980-03-28
FR2435043B3 FR2435043B3 (en) 1981-03-27

Family

ID=9212152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824867A Granted FR2435043A1 (en) 1978-08-29 1978-08-29 Accumulator terminal voltage and electrolyte level indicator - uses operational amplifier circuits to monitor battery charging or discharge states

Country Status (1)

Country Link
FR (1) FR2435043A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005537A2 (en) * 1997-07-25 1999-02-04 Minnesota Mining And Manufacturing Company In-situ fault detection apparatus and method for an encased energy storing device
CN104535929A (en) * 2014-11-14 2015-04-22 广州擎天实业有限公司 Polarity switching circuit of three-electrode battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005537A2 (en) * 1997-07-25 1999-02-04 Minnesota Mining And Manufacturing Company In-situ fault detection apparatus and method for an encased energy storing device
WO1999005537A3 (en) * 1997-07-25 1999-05-06 Minnesota Mining & Mfg In-situ fault detection apparatus and method for an encased energy storing device
CN104535929A (en) * 2014-11-14 2015-04-22 广州擎天实业有限公司 Polarity switching circuit of three-electrode battery
CN104535929B (en) * 2014-11-14 2017-08-25 广州擎天实业有限公司 Three-electrode battery polarity switching circuit

Also Published As

Publication number Publication date
FR2435043B3 (en) 1981-03-27

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