公开(公告)号：US20150276885A1

公开(公告)日：2015-10-01

申请号：US14225192

申请日：2014-03-25

Applicant: STMicroelectronics International N.V.

Inventor： Hariharasudhan K.R. ,  Ramkumar S.

IPC: G01R31/36

CPC classification number: H02J7/0047 ,  G01R31/367 ,  G01R31/3842 ,  H02J2007/005

Abstract: Disclosed herein are a method of computing an estimated SOC and a battery state of charge (SOC) monitor. An embodiment method for computing an estimated SOC includes periodically measuring a present battery current and a present battery voltage. A hysteresis compensation value is then computed based on a previous SOC, the present battery current, and the present battery voltage when a change in battery current exceeds a threshold. The estimated SOC is then determined based on the hysteresis compensation value and a baseline SOC determined based on the present battery voltage and the present battery current.

Abstract translation: 这里公开了一种计算估计的SOC和电池充电状态（SOC）监视器的方法。 用于计算估计SOC的实施例方法包括周期性地测量当前电池电流和当前电池电压。 然后，当电池电流的变化超过阈值时，基于先前的SOC，当前的电池电流和当前的电池电压来计算滞后补偿值。 然后基于滞后补偿值和基于当前电池电压和当前电池电流确定的基线SOC来确定估计的SOC。