JPS5618375A - Battery liquid level alarm - Google Patents

Battery liquid level alarm

Info

Publication number
JPS5618375A
JPS5618375A JP9265779A JP9265779A JPS5618375A JP S5618375 A JPS5618375 A JP S5618375A JP 9265779 A JP9265779 A JP 9265779A JP 9265779 A JP9265779 A JP 9265779A JP S5618375 A JPS5618375 A JP S5618375A
Authority
JP
Japan
Prior art keywords
liquid level
current
detection electrode
resistor
level alarm
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.)
Pending
Application number
JP9265779A
Other languages
Japanese (ja)
Inventor
Tetsuo Senoo
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP9265779A priority Critical patent/JPS5618375A/en
Publication of JPS5618375A publication Critical patent/JPS5618375A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Secondary Cells (AREA)

Abstract

PURPOSE:To prevent a detection circuit from being deteriorated and a battery from being consumed by applying current to a liquid level detection electrode instead of removing it, detecting the charge in this flow-in current, and detecting the liquid level. CONSTITUTION:A diode D1 for inverse flow prevention is inserted between a liquid level detection electrode DE and a resistor R1 in the direction where current is prevented from flowing from the detection electrode DE to a detection circuit. A resistor R5 is connected between the plus end of a power supply and the base of a transistor T3 and a circuit which applies current to the detection electrode DE is formed through the resistor R1 and the diode D1. The change in the current (i) applied to the detection electrode DE is detected by the PNP type transistor T3.
JP9265779A 1979-07-23 1979-07-23 Battery liquid level alarm Pending JPS5618375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9265779A JPS5618375A (en) 1979-07-23 1979-07-23 Battery liquid level alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9265779A JPS5618375A (en) 1979-07-23 1979-07-23 Battery liquid level alarm

Publications (1)

Publication Number Publication Date
JPS5618375A true JPS5618375A (en) 1981-02-21

Family

ID=14060531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9265779A Pending JPS5618375A (en) 1979-07-23 1979-07-23 Battery liquid level alarm

Country Status (1)

Country Link
JP (1) JPS5618375A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992340A (en) * 1989-04-20 1991-02-12 Motorola, Inc. Intrinsic safe battery having self test capability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992340A (en) * 1989-04-20 1991-02-12 Motorola, Inc. Intrinsic safe battery having self test capability

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