公开(公告)号：US20080265841A1

公开(公告)日：2008-10-30

申请号：US12076645

申请日：2008-03-20

申请人： Cheonsoo Kim

发明人： Cheonsoo Kim

IPC分类号： H02J7/00

CPC分类号： G01R31/387 ,  G01R31/3648 ,  G01R31/3828

摘要： The provided are two test methods for the cycle life test of a lithium rechargeable battery, which measures charge/discharge capacity by repeating charging and discharging lithium rechargeable battery. In one method, a constant current-constant voltage of charge rate of 1.5C and 4.2V, and a cut-off current of 0.1C are set to charge the battery, and a discharge rate of 1.0C and a cut-off voltage of 3.0V are set to discharge the battery, and there is no rest period between the charging and discharging. In another method, a constant current-constant voltage charge condition of charge rate of 1.0C and 4.2V, and a cut-off current of 0.1C are set to charge the battery, and a discharge rate of 1.3C and a cut-off voltage of 3.3V are set to discharge the battery, and there is no rest period between the charging and discharging. The present invention is appropriate to the cycle life test method of 500 cycles.

摘要翻译： 提供的两种锂充电电池的循环寿命试验方法，通过重复充电和放电锂可充电电池测量充电/放电容量。 在一种方法中，设定充电速率为1.5C和4.2V的恒定电流恒定电压以及0.1C的截止电流以对电池充电，并且放电速率为1.0℃和截止电压 3.0V设置为放电电池，充电和放电之间没有休息期。 在另一种方法中，设定充电速率为1.0℃和4.2V的恒定电流恒定电压充电条件以及0.1C的截止电流，以对电池充电，并且放电速率为1.3℃和截止 设定3.3V的电压使电池放电，充放电之间没有休息期。 本发明适用于500循环的循环寿命试验方法。

公开(公告)号：US20080233469A1

公开(公告)日：2008-09-25

申请号：US12029246

申请日：2008-02-11

申请人： Piotr Drozdz ,  Lorne Edward Gettel ,  Stewart Neil Simmonds

发明人： Piotr Drozdz ,  Lorne Edward Gettel ,  Stewart Neil Simmonds

IPC分类号： H01M6/02 ,  H01M10/48

CPC分类号： H02J7/0016 ,  B60L50/64 ,  G01R31/3648 ,  G01R31/374 ,  G01R31/3828 ,  H01M2/1072 ,  H01M10/052 ,  H01M10/482 ,  H02J7/0077 ,  Y02E60/122 ,  Y02T10/7011 ,  Y02T10/7016 ,  Y02T10/705 ,  Y02T10/7055

摘要： Disclosed herein is a battery management system for lithium ion batteries capable of determining a battery pack's state of capacity; determining a battery pack's state of charge limits; adjusting for voltage drops and power losses over a battery's internal and/or connector impedances; adjusting the upper and lower voltage limits of a battery pack; and of actively balancing the cells making up the battery pack. In order to achieve this functionality, the battery pack management system includes an electronic control unit, which unit is coupled to module and cell-level circuitry that is designed to measure operating conditions of the battery such as voltage and current at any given time.

摘要翻译： 这里公开了一种能够确定电池组的容量状态的锂离子电池的电池管理系统; 确定电池组的充电状态; 调整电池内部和/或连接器阻抗的电压降和功率损耗; 调整电池组的上限和下限电压; 并且主动平衡构成电池组的电池。 为了实现该功能，电池组管理系统包括电子控制单元，该单元耦合到模块和电池级电路，该电路被设计为在任何给定时间测量诸如电压和电流之间的电池的操作条件。

公开(公告)号：US20010009361A1

公开(公告)日：2001-07-26

申请号：US09800054

申请日：2001-03-05

发明人： Richard E. Downs ,  James M. Douglass ,  Richard William Ezell

IPC分类号： H02J007/00

CPC分类号： H02J7/044 ,  G01R31/3828 ,  H01M10/48 ,  Y10S320/21

摘要： A method for monitoring various parameters and conditions of a rechargeable battery to accurately determine the remaining charge level of the rechargeable battery, and includes using a temperature sensor to monitor the temperature of the rechargeable battery. The potential level of the rechargeable battery is monitored with a voltage meter coupled to the rechargeable battery. The current flow into and out of the rechargeable battery is monitored with current meter coupled to the rechargeable battery. A current accumulator coupled to the current meter is used to accumulate the net total of current flow, and an oscillatory circuit is used to generate a timing signal to time selected functions.

摘要翻译： 一种用于监视可再充电电池的各种参数和条件以准确地确定可再充电电池的剩余电量的方法，并且包括使用温度传感器来监测可再充电电池的温度。 用可再充电电池连接的电压表监测可充电电池的电位。 进入和离开可充电电池的电流由连接到可再充电电池的电流表监测。 耦合到电流表的电流累加器用于累积电流的总和，并且使用振荡电路来产生定时信号以对所选择的功能进行时间​​。

公开(公告)号：US20190204391A1

公开(公告)日：2019-07-04

申请号：US16238336

申请日：2019-01-02

申请人： BLOOM ENERGY CORPORATION

发明人： Carl COTTULI

IPC分类号： G01R31/374 ,  H01M8/04701 ,  G01R31/3828 ,  H01M8/0432 ,  G01R31/378

CPC分类号： G01R31/374 ,  G01R31/38 ,  G01R31/3828 ,  H01M8/0432 ,  H01M8/04701

摘要： Various embodiments manage a fuel cell IT grid system to maintain fuel cell temperatures above a threshold temperature. The system may include power modules each including a fuel cell, DC/DC converters each connected to a power module, a DC power bus connected to the DC/DC, IT loads each connected to the DC power bus, a load balancing load connected to the DC power bus, and a control device connected to a first power module. The control device may determine whether a temperature of the first power module exceeds the temperature threshold, determine whether an electrical power output of the power modules exceeds an electrical power demand of the IT loads in response to the temperature exceeding the temperature threshold, and direct excess electrical power output to the load balancing load in response to the electrical power output exceeding the electrical power demand.

公开(公告)号：US20190184846A1

公开(公告)日：2019-06-20

申请号：US15946755

申请日：2018-04-06

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION ,  HONGIK UNIVERSITY INDUSTRY-ACADEMIA COOPERATION FOUNDATION

发明人： Seung Won KANG ,  Jee Hwan JEON ,  Hyun Jong OH ,  Sung Jin PARK ,  Min Gyu PARK

IPC分类号： B60L11/18 ,  G01R31/36 ,  H02J7/00

CPC分类号： B60L58/12 ,  G01R31/3828 ,  H02J7/0078 ,  H02J2007/0049 ,  H02J2007/005

摘要： A vehicle includes a vehicle battery; a vehicle sensor configured to detect a current, a voltage and a temperature of the vehicle battery; and an alternator configured to output a target voltage to the vehicle battery. A controller is configured to calculate state of charge (SOC) estimation based on the current, voltage and temperature of the vehicle battery, calculate an initial SOC based on a direct current internal resistance (DCIR) map and apply the initial SOC to the SOC estimation, when an open circuit voltage (OCV) is maintained in a predetermined range after engine-off, and adjust an available SOC range based on a difference between an actual battery charge current amount, to which the initial SOC is applied, and the calculated SOC estimation.

公开(公告)号：US10073145B2

公开(公告)日：2018-09-11

申请号：US14764434

申请日：2013-07-04

申请人： LG CHEM, LTD.

发明人： Kyung Jik Kim ,  Ho Sang Kwon ,  Jae Chan Lee

IPC分类号： G01R31/36 ,  H01M10/48 ,  H01M10/42

CPC分类号： G01R31/3842 ,  G01R31/3648 ,  G01R31/374 ,  G01R31/3828 ,  G01R31/392 ,  G01R31/396 ,  H01M10/425 ,  H01M10/48

摘要： Disclosed is a method for estimating a state of charge (SOC) of a secondary battery using a full charge capacity (FCC) of the battery, the method including (S1) measuring voltage and current of the battery, (S2) calculating the FCC using a voltage change and a current integral of the battery during a specific time, (S3) estimating a time remaining until the battery is fully discharged using the calculated FCC and the measured voltage and current to calculate a self-discharge rate, (S4) calculating a capacity deterioration rate of each charge cycle of the battery, and (S5) applying the calculated self-discharge rate and the calculated capacity deterioration rate to estimate the SOC of the battery.

公开(公告)号：US20180050681A1

公开(公告)日：2018-02-22

申请号：US15555171

申请日：2016-02-26

申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

发明人： Keiichiro OHKAWA ,  Ryohhei NAKAO

IPC分类号： B60W20/13 ,  B60W20/40 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26

CPC分类号： B60W20/13 ,  B60L58/12 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2260/42 ,  B60W10/06 ,  B60W10/08 ,  B60W10/26 ,  B60W20/40 ,  B60W2510/244 ,  G01R31/3828 ,  G01R31/3835 ,  G01R31/3842 ,  H01M10/48 ,  H02J7/00 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y10S903/93

摘要： A device for controlling current for charging/discharging a battery with a high accuracy includes a time-point setting unit which calculates a voltage difference by subtracting a calculated open-circuit voltage from a measured closed-circuit voltage, and sets first and second time points, at which an absolute value of the voltage difference becomes equal to or less than a predetermined value and an absolute value of a difference in the open-circuit voltage becomes equal to or less than a predetermined value. The control device further includes a current correction amount calculation unit to obtain the current integral amount, calculate the current error in a detection signal and set the current error as the current correction amount on the basis of the current integral amount and the time from the first time point to the second time point. The current correction unit corrects the detection signal using the current correction amount.

公开(公告)号：US20180017628A1

公开(公告)日：2018-01-18

申请号：US15547109

申请日：2016-01-22

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： Tomoki TAKEGAMI ,  Toshihiro WADA

IPC分类号： G01R31/36

CPC分类号： G01R31/3842 ,  G01R31/3648 ,  G01R31/367 ,  G01R31/382 ,  G01R31/3828 ,  G01R31/392 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  H02J7/0047 ,  H02J2007/005

摘要： Provided is a battery state estimation device configured to: calculate a first state of charge and a first open circuit voltage corresponding to the first state of charge by using a detection current output from a current detection unit and state-of-charge estimation parameters; calculate a second open circuit voltage and a second state of charge corresponding to the second open circuit voltage by using a detection voltage output from a voltage detection unit and equivalent circuit parameters; recursively estimate and update the state-of-charge estimation parameters by using a state-of-charge error, which is a value obtained by subtracting the first state of charge from the second state of charge; and recursively estimate and update the equivalent circuit parameters by using an open circuit voltage error, which is a value obtained by subtracting the first open circuit voltage from the second open circuit voltage.

公开(公告)号：US20170176544A1

公开(公告)日：2017-06-22

申请号：US15379982

申请日：2016-12-15

申请人： ROHM CO., LTD.

发明人： Takahiro SHIMIZU

IPC分类号： G01R31/36 ,  G01R31/00

CPC分类号： G01R31/392 ,  G01R31/374 ,  G01R31/3828

摘要： A method for estimating degradation of a rechargeable battery, includes determining a coulomb count value by integrating a charging/discharging current of the battery, monitoring a state of the battery, detecting that the battery is charged/discharged with a predetermined amount of charges, based on the coulomb count value, and changing an index X indicating degradation of the battery by a variation ΔX in accordance with the state of the battery, which is measured in a period during which the battery is charged/discharged with the predetermined amount of charges, if the charging/discharging of the battery with the predetermined amount of charges is detected.

公开(公告)号：US20170010328A1

公开(公告)日：2017-01-12

申请号：US14792703

申请日：2015-07-07

申请人： Hand Held Products, Inc.

发明人： Jeffrey Wayne Mullen ,  Mark Alan Howe ,  Ramon Redondo

IPC分类号： G01R31/36

CPC分类号： G01R31/3648 ,  G01R31/382 ,  G01R31/3828 ,  G01R31/392

摘要： A device is disclosed that determines the actual capacity of a battery. The device determines the charge state of the battery and monitors discharge events. Before additional charge is applied, a minimum useful capacity is recorded based on passed charge values recorded by a battery gas gauge during discharge. Before a low voltage shut down, a full capacity is recorded based on passed charge values. The battery capacity information can be used to provide insights on the timing for battery replacement and for improvement in workflows involving the device.

摘要翻译： 公开了一种确定电池的实际容量的装置。 该设备确定电池的充电状态并监视放电事件。 在应用额外的费用之前，基于在放电期间由电池气量计记录的通过的电荷值记录最小有用容量。 在低电压关闭之前，根据通过的电荷值记录满容量。 电池容量信息可用于提供有关电池更换的时间以及涉及设备的工作流程改进方面的见解。