公开(公告)号：US20240295605A1

公开(公告)日：2024-09-05

申请号：US17768468

申请日：2020-10-14

申请人： Benning CMS Technology GmbH

发明人： Wolfgang Bessler

IPC分类号： G01R31/367 ,  G01R31/374 ,  G01R31/3835 ,  G01R31/392

CPC分类号： G01R31/367 ,  G01R31/374 ,  G01R31/3835 ,  G01R31/392

摘要： The invention relates to a method and a device for determining the state of charge (SOC) of a rechargeable battery (106) of a specified battery type, or a parameter physically related thereto, in particular a remaining charge amount Q contained in the battery, wherein the method operates by means of a voltage-controlled battery model (102), which is parameterized for the battery (106) in question or a corresponding battery type. It is merely necessary to measure the battery voltage Umeas and to provide it to the battery model (102) as an input variable. The invention further relates to a method and a device for determining the state of health (SOH) of a battery (102), wherein the battery model (102), which is also used to determine the SOC, provides a modelled battery current Imod. Modelled charge amounts during charging and discharging phases of the battery (106) can be determined therefrom and compared with measured charge amounts, which are determined from the measured battery current Imeas. Because the battery model (102) does not age, the SOH of the battery can thereby be determined.