Title:
バッテリが平衡状態にないときのそのバッテリの充電状態の判定のための装置及び方法
Document Type and Number:
Japanese Patent JP2010508507
Kind Code:
A
Abstract:
The invention relates to a method and an apparatus, like a charger for determining the state-of-charge of a battery which has been charged or discharged and which has not reached its equilibrium state, the method comprising the steps of determining the EMF of the battery by extrapolation of the battery voltage sampled during relaxation after the charge or the discharge process, wherein the extrapolation is based on a model using only variables sampled during the relaxation process and deriving the state-of-charge from the EMF of the battery by using a predetermined relation between the EMF and the state-of-charge. This method is a voltage-prediction method without the need to store parameters beforehand. Instead, the voltage relaxation end value is determined based on the measured first part of a voltage relaxation curve and mathematical optimisation/fitting of a function to this measured part of the relaxation curve.
Inventors:
Belffeld, Hendrik Yeh
Pop, Varel
Notten, Petrus Haell
Pop, Varel
Notten, Petrus Haell
Application Number:
JP2009534032A
Publication Date:
March 18, 2010
Filing Date:
October 25, 2007
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G01R31/36; H01M10/48; H02J7/00
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito