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1. (WO2018080736) BATTERY CAPACITY ESTIMATION FOR A BATTERY PACK

Pub. No.:    WO/2018/080736    International Application No.:    PCT/US2017/054747
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Tue Oct 03 01:59:59 CEST 2017
IPC: G01R 31/36
Applicants: MOTOROLA SOLUTIONS, INC.
Inventors: CUTCHER, Jeffery L.
Title: BATTERY CAPACITY ESTIMATION FOR A BATTERY PACK
Abstract:
Methods and devices for battery capacity estimation. One embodiment provides a method (500) for battery (130) capacity estimation for a battery pack (120) of an electronic device (110), the battery pack (120) including a battery (130) and a writeable memory (310). The method (500) includes reading an accumulated charge count from the writeable memory (310) and detecting a connection of the battery (130) to a charger. The method (500) also includes determining an initial state of charge of the battery (130) when the connection of the battery (130) to the charger is detected and determining a second state of charge of the battery (130). The method (500) further includes determining a charge count change based on the initial state of charge and the second state of charge and determining a new accumulated charge count based on the charge count change and the accumulated charge count. The method (500) also includes writing the new accumulated charge count to the writeable memory (310).