公开(公告)号：KR1020140056693A

公开(公告)日：2014-05-12

申请号：KR1020120121798

申请日：2012-10-31

Applicant: 한국전기연구원

Inventor： 배정효 ,  최흥관 ,  백지국 ,  조창희 ,  허주식 ,  이재덕

IPC: G01R31/36 ,  G01R19/165

Abstract: A method of estimating a state of charge of a battery relates to a method of estimating the state of charge (SOC) of a battery module having at least one battery cell through a battery management system (BMS) which includes (a) a step where a measuring unit included in the battery management system measures the off potential, which is the open circuit voltage of the battery cell; and (b) a step where a control unit of the battery management system estimates the state of charge corresponding with the off potential measured in step (a) based on a lookup table. The lookup table includes battery cell temperature, charging and discharging numbers and state of charge (SOC) corresponding with the off potential according to the discharge current amount.

Abstract translation: 估计电池的充电状态的方法涉及通过电池管理系统（BMS）估计具有至少一个电池单元的电池模块的充电状态（SOC）的方法，该电池管理系统包括：（a） 包括在电池管理系统中的测量单元测量作为电池单元的开路电压的关闭电位; 以及（b）电池管理系统的控制单元基于查找表来估计与步骤（a）中测量的关闭电位对应的电荷状态的步骤。 查找表包括根据放电电流量对应于关闭电位的电池单元温度，充电和放电次数以及充电状态（SOC）。