公开(公告)号：US20180034288A1

公开(公告)日：2018-02-01

申请号：US15662408

申请日：2017-07-28

Applicant: Apple Inc.

Inventor： Thomas C. Greening ,  Karthik Kadirvel ,  Gary L. Stirk ,  Saroj K. Sahu ,  Kamran M. Hasan

IPC: H02J7/00

CPC classification number: H02J7/0019 ,  H01M10/425 ,  H01M10/441 ,  H01M2010/4271 ,  H02J7/0022 ,  H02J7/0026 ,  H02J7/0077 ,  H02J2007/0098

Abstract: This disclosure describes a battery pack that includes a plurality of asymmetrical banks, with different capacities and/or voltages, and multiple taps, coupled to the corresponding banks, to power electrical loads. The battery pack also comprise a balancing circuit and a battery management unit. The battery pack may regulate voltages among the banks and/or balance the states of charge among the asymmetrical banks, by moving charges among the banks, by controlling one or more converters. The battery pack monitors the status of its banks and communicate with a host system via the battery management unit. Based on the monitored information and/or communication, the battery management unit generates control signals to drive the one or more converters.

公开(公告)号：US20160087461A1

公开(公告)日：2016-03-24

申请号：US14746665

申请日：2015-06-22

Applicant: Apple Inc.

Inventor： Thomas C. Greening ,  P. Jeffrey Ungar ,  William C. Athas

IPC: H02J7/00

CPC classification number: H02J7/007 ,  G01P3/56 ,  G01P15/00 ,  H01M2/00 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/443 ,  H01M10/48 ,  H01M2300/00 ,  H02J7/00 ,  H02J7/0042 ,  H02J7/0052 ,  H02J7/0072 ,  Y02E60/122 ,  Y02T10/7011

Abstract: Some embodiments of the present invention provide a system that adaptively charges a battery, wherein the battery is a lithium-ion battery which includes a transport-limiting electrode governed by diffusion, an electrolyte separator and a non-transport-limiting electrode. During operation, the system determines a lithium surface concentration at an interface between the transport-limiting electrode and the electrolyte separator based on a diffusion time for lithium in the transport-limiting electrode. Next, the system calculates a charging current or a charging voltage for the battery based on the determined lithium surface concentration. Finally, the system applies the charging current or the charging voltage to the battery.

公开(公告)号：US20150372526A1

公开(公告)日：2015-12-24

申请号：US14749466

申请日：2015-06-24

Applicant: APPLE INC.

Inventor： Thomas C. Greening ,  Qing Liu ,  William C. Athas

IPC: H02J7/00

CPC classification number: H02M3/1582 ,  G06F1/263 ,  H02J7/0068 ,  H02J9/061 ,  H02J2007/0067 ,  H02M3/158

Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system provides a charging circuit for converting an input voltage from a power source into a set of output voltages for charging the battery and powering a low-voltage subsystem and a high-voltage subsystem in the portable electronic device. Upon detecting discharging of the battery in a low-voltage state, the system uses the charging circuit to directly power the low-voltage subsystem from a battery voltage of the battery and up-convert the battery voltage to power the high-voltage subsystem.

Abstract translation: 所公开的实施例提供一种管理便携式电子设备中的电池的使用的系统。 在操作期间，系统提供充电电路，用于将来自电源的输入电压转换成用于对电池充电并为便携式电子设备中的低电压子系统和高电压子系统供电的一组输出电压。 当检测到电池在低电压状态下的放电时，系统使用充电电路从电池的电池电压直接对低压子系统供电，并升压转换电池电压以为高压子系统供电。

公开(公告)号：US09128162B2

公开(公告)日：2015-09-08

申请号：US13622852

申请日：2012-09-19

Applicant: Apple Inc.

Inventor： Thomas C. Greening ,  Jeffrey G. Koller ,  Nils E. Mattisson ,  P. Jeffrey Ungar

IPC: G01R31/36 ,  H01M10/48 ,  H01M10/42 ,  H01M10/0525

CPC classification number: G01R31/362 ,  G01R31/3634 ,  G01R31/3648 ,  G01R31/3651 ,  G01R31/3679 ,  H01M10/0525 ,  H01M10/4285 ,  H01M10/48

Abstract: Some embodiments of the present invention provide a system that estimates a state of charge for a battery. During operation, while the battery is relaxing toward a fully rested state, the system determines if a modified state of charge of the battery is substantially consistent with a predetermined decay pattern. If so, the system estimates the state of charge of the battery as a value of the modified state of charge determined at the time when the consistency is observed. Otherwise, the system continues monitoring the modified state of charge of the battery. In one embodiment, the predetermined decay pattern is a single exponential decay. After estimating the state of charge of the battery, the system may determine an uncertainty of the estimated state of charge. More specifically, the system can estimate the uncertainty as substantially equal to a fraction of the difference between the value of the modified state of charge and the value of the voltage-based state of charge at the time when the consistency is observed.

Abstract translation: 本发明的一些实施例提供一种估计电池的充电状态的系统。 在操作期间，当电池正在朝着完全静止状态放松时，系统确定电池的修改的充电状态是否与预定的衰减模式大致一致。 如果是这样，系统将电池的充电状态估计为在观察到一致性时确定的充电状态的值。 否则，系统继续监视电池的修改充电状态。 在一个实施例中，预定衰减模式是单指数衰减。 在估计电池的充电状态之后，系统可以确定估计的充电状态的不确定性。 更具体地，系统可以将不确定度估计为基本上等于修正充电状态的值与观察到一致性时的基于电压的充电状态的值之间的差的一小部分。

公开(公告)号：US20150236383A1

公开(公告)日：2015-08-20

申请号：US14184167

申请日：2014-02-19

Applicant: Apple Inc.

Inventor： Jeffrey G. Koller ,  Nils E. Mattisson ,  Thomas C. Greening ,  P. Jeffrey Ungar

IPC: H01M10/42

CPC classification number: H01M10/48 ,  G01R31/361 ,  G01R31/3651 ,  G01R31/3675 ,  H01M2010/4271 ,  H01M2220/30

Abstract: The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system obtains a voltage of the battery and a state-of-charge of the battery and calculates an effective C-rate of the battery using the voltage and the state-of-charge. Next, the system uses the effective C-rate to estimate an inaccessible capacity of the battery. Finally, the system manages use of the battery with the portable electronic device based on the inaccessible capacity.

Abstract translation: 所公开的实施例提供一种管理便携式电子设备中的电池的使用的系统。 在操作期间，系统获得电池的电压和电池的充电状态，并且使用电压和充电状态来计算电池的有效C率。 接下来，系统使用有效的C速率来估计电池的不可接近的容量。 最后，该系统基于不可访问的容量来管理电池与便携式电子设备的使用。