公开(公告)号：US11835836B1

公开(公告)日：2023-12-05

申请号：US17015974

申请日：2020-09-09

Applicant: Apple Inc.

Inventor： Yi-Kuei Wu ,  Jason Pelc ,  Mark Alan Arbore ,  Thomas C. Greening ,  Matthew A. Terrel ,  Yongming Tu ,  Mohamed Mahmoud

IPC: G02F1/21

CPC classification number: G02F1/21 ,  G02F1/212

Abstract: Disclosed herein is an integrated photonics device including an on-chip wavelength stability monitor. The wavelength stability monitor may include one or more interferometric components, such as Mach-Zehnder interferometers and can be configured to select among the output signals from the interferometric components for monitoring the wavelength emitted by a corresponding photonic component, such as a light source. The selection may be based on a slope of the output signal and in some examples may correspond to a working zone at or around a wavelength or wavelength range. In some examples, the interferometric components can be configured with different phase differences such that the corresponding working zones have different wavelengths. In some examples, the slopes of the output signals may be weighted based on the steepness of the slope and all of the output signals may include information for wavelength locking the measured wavelength to the target wavelength.

公开(公告)号：US10069319B2

公开(公告)日：2018-09-04

申请号：US15083917

申请日：2016-03-29

Applicant: Apple Inc.

Inventor： Thomas C. Greening ,  Kamran M. Hasan

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  H02J7/0055 ,  H02J7/007 ,  H02J7/0073 ,  H02J2007/0059

Abstract: Systems and methods for power management are disclosed herein. In one disclosed embodiment, a battery charging system includes a battery charger for simultaneously charging a battery (and/or providing power to a system load) with multiple power sources, using a closed-loop charging servo target based on measurements taken by one or more gauges. In some embodiments, the multiple power sources may be utilized simultaneously according to a charging profile that specifies, e.g., one or more battery charging parameters, as well as according to determined priority levels for one or more of the multiple power sources coupled to the battery. In some embodiments, the priority level of a given power source is not fixed; rather, the priority level for the given power source may change based upon the characteristics of the given power source. In some embodiments, the priority levels for the multiple power sources are implemented using cascaded voltage target values.

公开(公告)号：US20170146605A1

公开(公告)日：2017-05-25

申请号：US15336398

申请日：2016-10-27

Applicant: Apple Inc.

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

IPC: G01R31/36 ,  H01M10/48 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R31/367 ,  G01R31/3828 ,  H01M10/48 ,  H01M2220/30 ,  H02J7/0047

Abstract: A system for tracking the capacity of a battery in a portable electronic device is described. While the portable electronic device remains plugged in to a power adapter, the system estimates the capacity of the battery by performing the following operations. The system measures a first open-circuit voltage for the battery while the battery rests at a first state of charge. Next, the system causes the battery to transition to a second state of charge. While the battery transitions to the second state of charge, the system integrates a current through the battery to determine a net change in charge for the battery. Next, the system measures a second open-circuit voltage for the battery while the battery rests at the second state of charge. Finally, the system estimates a capacity for the battery based on the first open-circuit voltage, the second open-circuit voltage and the net change in charge. This capacity measurement is repeated and the multiple results are fit to a line. The slope of fitted line is then used to estimate how the true battery capacity has faded since last measured using traditional methods that require the battery to be rested at a low state of charge.

公开(公告)号：US09594122B2

公开(公告)日：2017-03-14

申请号：US14841095

申请日：2015-08-31

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：US09506987B2

公开(公告)日：2016-11-29

申请号：US13791328

申请日：2013-03-08

Applicant: Apple Inc.

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

IPC: G01R31/36

CPC classification number: G01R31/362 ,  G01R31/361 ,  G01R31/3651 ,  H01M10/48 ,  H01M2220/30 ,  H02J7/0047

Abstract: A system for tracking the capacity of a battery in a portable electronic device is described. While plugged in-to a power adapter, the system measures a first open-circuit voltage for the battery while the battery rests at a first state of charge. Next, the system causes the battery to transition to a second state of charge. During the transition, the system integrates a current through the battery to determine a net change in charge. Next, the system measures a second open-circuit voltage while the battery rests at the second state of charge. Finally, the system estimates a capacity for the battery based on the first and second open-circuit voltages and the net change in charge. This capacity measurement is repeated and the multiple results are fitted to a line. The slope of fitted line is used to estimate how the battery capacity has faded since last measured using traditional techniques.

Abstract translation: 描述了用于跟踪便携式电子设备中的电池的容量的系统。 当插入电源适配器时，系统测量电池的第一个开路电压，而电池则处于第一个充电状态。 接下来，系统使电池转换到第二充电状态。 在过渡期间，系统集成了通过电池的电流，以确定电量的净变化。 接下来，当电池处于第二充电状态时，系统测量第二开路电压。 最后，系统基于第一和第二开路电压和电荷的净变化来估计电池的容量。 重复该容量测量，并将多个结果拟合到一条线上。 拟合线的斜率用于估计上次使用传统技术测量电池容量是否褪色。

公开(公告)号：US09438054B2

公开(公告)日：2016-09-06

申请号：US13875106

申请日：2013-05-01

Applicant: Apple Inc.

Inventor： Parin Patel ,  Thomas C. Greening ,  Carl D. Tappan

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  H02J7/0003 ,  H02J7/0031

Abstract: An on-chip digital communication interface circuit is to be directly coupled to a counterpart interface circuit of a separate battery-side gas gauge circuit. An on-chip battery charging control circuit controls battery charging voltage and current that is supplied from a separate power source interface circuit to a battery cell terminal, according to charging voltage and current limits. The charging limits are read from the gas gauge circuit and in effect carry out a selected one of several different battery charging profiles. Other embodiments are also described and claimed.

Abstract translation: 片上数字通信接口电路将直接耦合到单独的电池侧气量计电路的对方接口电路。 片上电池充电控制电路根据充电电压和电流限制来控制从单独的电源接口电路向电池单元端子提供的电池充电电压和电流。 从气量计电路读取充电限制，并且实际上执行几个不同电池充电曲线中所选择的一个。 还描述和要求保护其他实施例。

公开(公告)号：US20160011273A1

公开(公告)日：2016-01-14

申请号：US14798147

申请日：2015-07-13

Applicant: Apple Inc.

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

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/3679 ,  G01R19/0069 ,  G01R19/165 ,  G01R21/06 ,  G01R31/3606 ,  G01R31/361 ,  G01R31/362 ,  G01R31/3624 ,  G01R31/3648 ,  G01R31/3651 ,  H02J7/0052 ,  H02J7/007 ,  Y02E60/122

Abstract: Some embodiments of the present invention provide a system that accurately and reliably updates a full charge capacity of a battery. During operation, the system charges the battery from an initial state to a rest point prior to reaching a fully charged state. The system then interrupts the charging process to allow the battery to relax to a resting voltage. Next, the system measures the resting voltage. The system then resumes the charging process toward the fully charged state. The system subsequently estimates the capacity of the battery based on the measured resting voltage and one or more other parameters.

Abstract translation: 本发明的一些实施例提供了一种能够准确且可靠地更新电池的完全充电容量的系统。 在操作期间，系统在达到完全充电状态之前将电池从初始状态充电到静止点。 然后系统中断充电过程以允许电池放松至静止电压。 接下来，系统测量静止电压。 然后，系统恢复到充满电状态的充电过程。 系统随后基于测量的静止电压和一个或多个其他参数来估计电池的容量。

公开(公告)号：US20150022160A1

公开(公告)日：2015-01-22

申请号：US13946577

申请日：2013-07-19

Applicant: Apple Inc.

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

IPC: H02J7/00

CPC classification number: H02J7/0091 ,  H01M10/425 ,  H01M10/44 ,  H01M10/48 ,  H01M2010/4271 ,  H02J7/0077

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. Next, the system calculates an effective C-rate of the battery using the voltage and the state-of-charge. Finally, the system uses the effective C-rate to manage a charging process for the battery.

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。 接下来，系统使用电压和充电状态来计算电池的有效C率。 最后，系统使用有效的C速率来管理电池的充电过程。

公开(公告)号：US20230012376A1

公开(公告)日：2023-01-12

申请号：US17859912

申请日：2022-07-07

Applicant: Apple Inc.

Inventor： Mark Alan Arbore ,  Thomas C. Greening ,  Yongming Tu

IPC: G01J3/10 ,  G02B27/10 ,  G01J3/32 ,  G01J3/45

Abstract: Configurations for light source modules and methods for mitigating coherent noise are disclosed. The light source modules may include multiple light source sets, each of which may include multiple light sources. The light emitted by the light sources may be different wavelengths or the same wavelength depending on whether the light source module is providing redundancy of light sources, increased power, coherent noise mitigation, and/or detector mitigation. In some examples, the light source may emit light to a coupler or a multiplexer, which may then be transmitted to one or more multiplexers. In some examples, the light source modules provide one light output and in other examples, the light source modules provide two light outputs. The light source modules may provide light with approximately zero loss and the wavelengths of light may be close enough to spectroscopically equivalent respect to a sample and far enough apart to provide coherent noise mitigation.

公开(公告)号：US10401435B2

公开(公告)日：2019-09-03

申请号：US15336398

申请日：2016-10-27

Applicant: Apple Inc.

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

IPC: G01R31/3842 ,  H02J7/00 ,  H01M10/48 ,  G01R31/367 ,  G01R31/3828

Abstract: A system for tracking the capacity of a battery in a portable electronic device is described. While the portable electronic device remains plugged in to a power adapter, the system estimates the capacity of the battery by performing the following operations. The system measures a first open-circuit voltage for the battery while the battery rests at a first state of charge. Next, the system causes the battery to transition to a second state of charge. While the battery transitions to the second state of charge, the system integrates a current through the battery to determine a net change in charge for the battery. Next, the system measures a second open-circuit voltage for the battery while the battery rests at the second state of charge. Finally, the system estimates a capacity for the battery based on the first open-circuit voltage, the second open-circuit voltage and the net change in charge. This capacity measurement is repeated and the multiple results are fit to a line. The slope of fitted line is then used to estimate how the true battery capacity has faded since last measured using traditional methods that require the battery to be rested at a low state of charge.