JPS58157066A - Alarm device used for warning about over-discharge of battery - Google Patents

Alarm device used for warning about over-discharge of battery

Info

Publication number
JPS58157066A
JPS58157066A JP57039021A JP3902182A JPS58157066A JP S58157066 A JPS58157066 A JP S58157066A JP 57039021 A JP57039021 A JP 57039021A JP 3902182 A JP3902182 A JP 3902182A JP S58157066 A JPS58157066 A JP S58157066A
Authority
JP
Japan
Prior art keywords
battery
reference voltage
voltage
warning
discharge
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
JP57039021A
Other languages
Japanese (ja)
Inventor
Masanori Tsugawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP57039021A priority Critical patent/JPS58157066A/en
Publication of JPS58157066A publication Critical patent/JPS58157066A/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
    • H01M10/44—Methods for charging or discharging
    • 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

Abstract

PURPOSE:To perform a detection when a battery comes to have a final discharge voltage by making a first constant reference voltage from the battery, and producing an alarm by comparing the first reference voltage with a second reference voltage which is proportional to the voltage of the battery. CONSTITUTION:A resistor 3 and a constant-voltage diode 4 are connected between the positive electrode and the negative electrode of a battery 1 through a switch 2 so as to make a first constant reference voltage. Resistors 5 and 6 are connected in a similar manner as above so as to make a second reference voltage which is proportional to the voltage of the battery 1. The first and the second voltages are compared by a comparing circuit 7, and an alarm circuit 8 operates and produces a warning when the second reference voltage becomes lower than the first reference voltage. Therefore, whether the battery 1 becomes unusable due to over discharge or not can be detected as soon as electric power is supplied from the battery 1 to a lead 9. Consequently, the handling of the battery 1, such as charging, exchange or the like, can be facilitated.
JP57039021A 1982-03-12 1982-03-12 Alarm device used for warning about over-discharge of battery Pending JPS58157066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57039021A JPS58157066A (en) 1982-03-12 1982-03-12 Alarm device used for warning about over-discharge of battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57039021A JPS58157066A (en) 1982-03-12 1982-03-12 Alarm device used for warning about over-discharge of battery

Publications (1)

Publication Number Publication Date
JPS58157066A true JPS58157066A (en) 1983-09-19

Family

ID=12541449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57039021A Pending JPS58157066A (en) 1982-03-12 1982-03-12 Alarm device used for warning about over-discharge of battery

Country Status (1)

Country Link
JP (1) JPS58157066A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727006A (en) * 1986-02-12 1988-02-23 The United States Of America As Represented By The Secretary Of The Army Method of monitoring electrochemical cells
JPH03276579A (en) * 1990-03-26 1991-12-06 Pfu Ltd Battery circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727006A (en) * 1986-02-12 1988-02-23 The United States Of America As Represented By The Secretary Of The Army Method of monitoring electrochemical cells
JPH03276579A (en) * 1990-03-26 1991-12-06 Pfu Ltd Battery circuit

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