公开(公告)号：US20180067170A1

公开(公告)日：2018-03-08

申请号：US15809433

申请日：2017-11-10

Applicant: STMicroelectronics International N.V.

Inventor： Daniel Ladret

IPC: G01R31/36

CPC classification number: G01R31/3662 ,  G01R31/3675

Abstract: The state of charge of a rechargeable battery is determined by calculating the DC impedance of the battery. The impedance is calculated by: performing a two different constant current discharges of the battery at a first and second C-rates, respectively; measuring the voltage and current during the interval of each constant current discharge and calculating the amount of charge extracted from the battery up to a point where the battery voltage drops to a threshold value; calculating the state of charge of the battery; and calculating the DC impedance of the battery as a function of the difference between the battery voltages and discharge currents for the two different discharges.

公开(公告)号：US20150025823A1

公开(公告)日：2015-01-22

申请号：US14329227

申请日：2014-07-11

Applicant: STMICROELECTRONICS INTERNATIONAL N.V.

Inventor： Daniel Ladret

IPC: G01R31/36

CPC classification number: G01R31/3675 ,  G01R31/362 ,  G01R31/3624 ,  G01R31/3662

Abstract: The remaining state of charge of a rechargeable battery is calculated by: measuring the instantaneous voltage, impedance and temperature of the battery, and then inputting the measured voltage, impedance and temperature values into an equation, wherein the equation yields a state of charge value that is a function of the said measured voltage, impedance and temperature values.

Abstract translation: 可再充电电池的剩余充电状态通过以下方式计算：测量电池的瞬时电压，阻抗和温度，然后将测量的电压，阻抗和温度值输入到等式中，其中该方程产生电荷状态 是所测量的电压，阻抗和温度值的函数。

公开(公告)号：US10191118B2

公开(公告)日：2019-01-29

申请号：US15809433

申请日：2017-11-10

Applicant: STMicroelectronics International N.V.

Inventor： Daniel Ladret

IPC: G01R31/36

Abstract: The state of charge of a rechargeable battery is determined by calculating the DC impedance of the battery. The impedance is calculated by: performing a two different constant current discharges of the battery at a first and second C-rates, respectively; measuring the voltage and current during the interval of each constant current discharge and calculating the amount of charge extracted from the battery up to a point where the battery voltage drops to a threshold value; calculating the state of charge of the battery; and calculating the DC impedance of the battery as a function of the difference between the battery voltages and discharge currents for the two different discharges.

公开(公告)号：US09891287B2

公开(公告)日：2018-02-13

申请号：US14329227

申请日：2014-07-11

Applicant: STMicroelectronics International N.V.

Inventor： Daniel Ladret

IPC: G01R31/36

CPC classification number: G01R31/3675 ,  G01R31/362 ,  G01R31/3624 ,  G01R31/3662

Abstract: The remaining state of charge of a rechargeable battery is calculated by: measuring the instantaneous voltage, impedance and temperature of the battery, and then inputting the measured voltage, impedance and temperature values into an equation, wherein the equation yields a state of charge value that is a function of the said measured voltage, impedance and temperature values.

公开(公告)号：US09841465B2

公开(公告)日：2017-12-12

申请号：US14328183

申请日：2014-07-10

Applicant: STMicroelectronics International N.V.

Inventor： Daniel Ladret

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/3662 ,  G01R31/3675

Abstract: The state of charge of a rechargeable battery is determined by calculating the DC impedance of the battery. The impedance is calculated by: performing a two different constant current discharges of the battery at a first and second C-rates, respectively; measuring the voltage and current during the interval of each constant current discharge and calculating the amount of charge extracted from the battery up to a point where the battery voltage drops to a threshold value; calculating the state of charge of the battery; and calculating the DC impedance of the battery as a function of the difference between the battery voltages and discharge currents for the two different discharges.

公开(公告)号：US20150025822A1

公开(公告)日：2015-01-22

申请号：US14328183

申请日：2014-07-10

Applicant: STMicroelectronics International N.V.

Inventor： Daniel Ladret

IPC: G01R31/36

CPC classification number: G01R31/3662 ,  G01R31/3675

Abstract: The state of charge of a rechargeable battery is determined by calculating the DC impedance of the battery. The impedance is calculated by: performing a two different constant current discharges of the battery at a first and second C-rates, respectively; measuring the voltage and current during the interval of each constant current discharge and calculating the amount of charge extracted from the battery up to a point where the battery voltage drops to a threshold value; calculating the state of charge of the battery; and calculating the DC impedance of the battery as a function of the difference between the battery voltages and discharge currents for the two different discharges.

Abstract translation: 通过计算电池的直流阻抗来确定可再充电电池的充电状态。 阻抗通过以下方式计算：分别以第一和第二C速率执行电池的两种不同恒定电流放电; 在每个恒定电流放电的间隔期间测量电压和电流，并计算从电池提取的电荷量，直到电池电压下降到阈值的点; 计算电池的充电状态; 以及根据两种不同放电的电池电压和放电电流之差来计算电池的直流阻抗。