METHOD FOR DETERMINING A CURRENT CHARGE LEVEL OF A BATTERY, BATTERY ASSEMBLY AND MOTOR VEHICLE

• Main Authors: NAUMANN ROLF, KRAUS MATTHIAS
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2019
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a method for determining a current state of charge value (SOC0, SOC1, SOC2) of a battery (14) of a specific battery type, wherein a field of characteristic curves (22) is provided, which, for certain different predetermined temperature ranges (delta T), specifies an internal resistance (Ri) for (26) the specific battery type in dependence on the state of charge (SOC) for the specific battery type, a current temperature (T) of the battery (14) is measured, a current internal resistance value (Ri0, Ri1) of the battery (14) is determined, and, on the basis of the currenttemperature (T) and the current internal resistance value (Ri0, Ri1), the current state of charge value (SOC0, SOC1, SOC2) of the battery (14) is determined by means of the field of characteristic curves (22). 本发明涉及一种用于确定一种特定电池类型的电池(14)的当前荷电状态值(SOC0，SOC1，SOC2)的方法，其中提供特征曲线族(22)，对相应不同的预定的温度范围(ΔT)来说，所述特征曲线族说明相关于(26)特定电池类型的荷电状态(SOC)的特定电池类型的内阻(Ri)；测量电池(14)的当前温度(T)；确定电池(14)的当前内阻值(Ri0，Ri1)；以及借助于特征曲线族(22)基于当前温度(T)和当前内阻值(Ri0，Ri1)确