BATTERY CHARGE STATE EVALUATION COINCIDENT WITH CONSTANT CURRENT CHARGING

• US 20160099593A1
• Filed: 10/03/2014
• Published: 04/07/2016
• Est. Priority Date: 10/03/2014
• Status: Abandoned Application

• Current Assignee: Infineon Technologies Austria Ag (Infineon Technologies AG)
• Original Assignee: Infineon Technologies Austria Ag (Infineon Technologies AG)
• Inventors: Lim, Cheow Guan
• Application Number:
  US14/506,188
• Publication Number:
  US 20160099593A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• CPC Class Codes: H02J 2310/22 The load being a portable electronic device
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/007182 in response to battery voltage

Abstract

Disclosed techniques include delivering a substantially constant current to charge a battery including at least one electrochemical battery cell, and measuring a charging voltage of the battery while delivering the substantially constant current to the battery. The method further includes evaluating a state of charge of the battery based on the measured charging voltage and the measured test voltage, and storing, based on the evaluation of the state of charge of the battery, an indication of the state of charge of the battery in a non-transitory computer readable medium.

Claims