WO2008075246A3 - Battery low indication - Google Patents

Battery low indication Download PDF

Info

Publication number
WO2008075246A3
WO2008075246A3 PCT/IB2007/054984 IB2007054984W WO2008075246A3 WO 2008075246 A3 WO2008075246 A3 WO 2008075246A3 IB 2007054984 W IB2007054984 W IB 2007054984W WO 2008075246 A3 WO2008075246 A3 WO 2008075246A3
Authority
WO
WIPO (PCT)
Prior art keywords
battery
load
vth
threshold value
battery low
Prior art date
Application number
PCT/IB2007/054984
Other languages
French (fr)
Other versions
WO2008075246A2 (en
Inventor
Schelte Heeringa
Oedilius J Bisschop
Original Assignee
Koninkl Philips Electronics Nv
Schelte Heeringa
Oedilius J Bisschop
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 Koninkl Philips Electronics Nv, Schelte Heeringa, Oedilius J Bisschop filed Critical Koninkl Philips Electronics Nv
Publication of WO2008075246A2 publication Critical patent/WO2008075246A2/en
Publication of WO2008075246A3 publication Critical patent/WO2008075246A3/en

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
    • G01R31/36—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
    • G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
    • 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

Landscapes

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

Abstract

An apparatus (A) comprises a battery (3), a load (5), a switch (4) arranged between the battery (3) and the load (5), and a battery charge indicator (1). The battery charge indicator (1) comprises a detector (10) which detects whether a battery voltage (VB) across the battery (3) drops below a threshold value (VTH), an indicator (15) which indicates to a user that the battery voltage (VB) dropped below the threshold value (VTH), and a controller (13) which determines whether the load (5) is connected to the battery (3) to activate the detector (10) for comparing the battery voltage (VB) with the threshold value (VTH) after the load (5) has been disconnected from the battery (3).
PCT/IB2007/054984 2006-12-15 2007-12-10 Battery low indication WO2008075246A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06126218 2006-12-15
EP06126218.4 2006-12-15

Publications (2)

Publication Number Publication Date
WO2008075246A2 WO2008075246A2 (en) 2008-06-26
WO2008075246A3 true WO2008075246A3 (en) 2008-11-06

Family

ID=39410007

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/054984 WO2008075246A2 (en) 2006-12-15 2007-12-10 Battery low indication

Country Status (1)

Country Link
WO (1) WO2008075246A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2887085B1 (en) * 2013-12-17 2016-09-14 Braun GmbH Method and apparatus for indicating a low battery level

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536757A (en) * 1982-11-30 1985-08-20 U.S. Philips Corporation Device for signalling a specific charge condition of an accumulator battery
US5717256A (en) * 1994-06-08 1998-02-10 Fujitsu Limited Power supply apparatus and electronic appliance equipped with the power supply apparatus
US5869952A (en) * 1997-08-07 1999-02-09 Wahl Clipper Corporation Battery charge indicator having improved resolution
DE102005003058A1 (en) * 2005-01-22 2006-07-27 Braun Gmbh Small electrical device e.g. electrical razor, has load supplied by battery, display for battery charge state, and device for measuring battery voltage if load is separated from battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536757A (en) * 1982-11-30 1985-08-20 U.S. Philips Corporation Device for signalling a specific charge condition of an accumulator battery
US5717256A (en) * 1994-06-08 1998-02-10 Fujitsu Limited Power supply apparatus and electronic appliance equipped with the power supply apparatus
US5869952A (en) * 1997-08-07 1999-02-09 Wahl Clipper Corporation Battery charge indicator having improved resolution
DE102005003058A1 (en) * 2005-01-22 2006-07-27 Braun Gmbh Small electrical device e.g. electrical razor, has load supplied by battery, display for battery charge state, and device for measuring battery voltage if load is separated from battery

Also Published As

Publication number Publication date
WO2008075246A2 (en) 2008-06-26

Similar Documents

Publication Publication Date Title
EP2360806A3 (en) Protection circuit and electronic device
WO2009034728A1 (en) Battery controller of vehicle
EP1686672A3 (en) Electronic apparatus
WO2008114734A1 (en) Accumulation system
EP2259376A4 (en) Secondary cell system
WO2009005097A1 (en) Secondary battery recharge control circuit and recharge control device using the same
EP2202864A3 (en) Charger for electronic device, electronic device, and charging method
WO2009001844A1 (en) Battery pack
WO2008102528A1 (en) Charging system, charger, and battery pack
EP2953202A3 (en) Battery charger with automatic voltage detection
EP2421112A3 (en) Protection circuit for battery pack
JP2011211870A5 (en) Power supply apparatus and power supply method
EP3327892A3 (en) Charging and discharging control circuit and battery pack
WO2008004009A3 (en) Switch mode power supply systems
WO2011001251A3 (en) Power supply system, electric vehicle provided with same, and control method of power supply system
WO2009078167A1 (en) Accumulation device
WO2009001843A1 (en) Battery pack
MY191199A (en) Battery control system and vehicle control system
EP2400626A3 (en) Battery control circuit
WO2009068960A3 (en) Vehicle control apparatus
TW200742221A (en) Battery device
EP2267862A3 (en) Charging system and method for managing the charging process depending on temperature and voltage
WO2010111451A3 (en) Under frequency/under voltage detection in a demand response unit
EP1826863A3 (en) Charging apparatus
MY186038A (en) Battery control system and vehicle control system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07849389

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07849389

Country of ref document: EP

Kind code of ref document: A2