公开(公告)号：US20230093677A1

公开(公告)日：2023-03-23

申请号：US17538897

申请日：2021-11-30

Applicant: Apple Inc.

Inventor： Wei He ,  Jun Hou ,  Junyi Shen ,  Yiming Lou ,  Nalin Chaturvedi

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/36 ,  G01R31/374

Abstract: Based on changes in a battery (e.g., age, temperature) of an electronic device, battery power prediction and correction logic of the electronic device may correct a power capability and/or regulate power associated with the battery. For example, the battery power prediction and correction logic may operate the battery to supply up to a maximum of a power capability with an applied correction factor based on a voltage measurement and a cutoff voltage associated with the battery.

公开(公告)号：US11728668B2

公开(公告)日：2023-08-15

申请号：US15682331

申请日：2017-08-21

Applicant: Apple Inc.

Inventor： Nalin Chaturvedi ,  Yiming Lou ,  Wei He ,  Stephen D. Sterz

IPC: G03B7/16 ,  G03B7/17 ,  H02J7/00 ,  G01R31/382 ,  G01R31/392 ,  G01R31/36 ,  G06F1/28 ,  G06F1/3206 ,  B60L58/10 ,  H01M10/48 ,  G01R31/367

CPC classification number: H02J7/007194 ,  B60L58/10 ,  G01R31/3647 ,  G01R31/382 ,  G01R31/392 ,  G03B7/16 ,  G03B7/17 ,  G06F1/28 ,  G06F1/3206 ,  H02J7/00 ,  H02J7/007 ,  H02J7/00714 ,  H02J7/007182 ,  G01R31/367 ,  H01M10/48 ,  H02J7/00034

Abstract: An electronic device may have a power system with a battery. The device may include power management circuitry that helps distribute power from the battery to components within the device. To prevent an excessive load from being applied to the battery and the battery from dropping below a cut-off voltage, power management circuitry may control power consumption by components in the device. Power consumption models in the power management circuitry may be used to ensure that maximum allowable power consumption levels are not exceeded. To help accurately and quickly manage power consumption decisions, each component may have characteristic power consumption values that characterize the power consumption profile of the component. These characteristic power consumption values may be provided to the power management circuitry with a request for power consumption and the power management circuitry may determine maximum allowable power consumption for the component based on the characteristic power consumption values.

公开(公告)号：US10830821B2

公开(公告)日：2020-11-10

申请号：US14605914

申请日：2015-01-26

Applicant: Apple Inc.

Inventor： Yiming Lou ,  Soundararajan Manthiri

IPC: H02J7/00 ,  H02J9/00 ,  G06F17/40 ,  G06F19/00 ,  G01R31/36 ,  G01R31/367 ,  G01R31/387

Abstract: This application relates to methods and apparatus for predicting power and energy availability of a battery. The prediction is made based on a given amount of time, which represents a period in which the battery may be required to operate. Additionally, a learning cycle is incorporated to update a battery model of the battery with certain parameters. The battery model is updated by introducing a time-varying current to the battery and analyzing the voltage response of the battery. A model-based predictive algorithm is used in combination with the battery model to predict battery output parameters based on variables derived from the learning cycle and additional inputs supplied to the model-based predictive algorithm. After one or more iterations, or using a simplified model-based equation, the model-based predictive algorithm can provide an accurate prediction for the maximum current that the battery can supply for a predetermined period of time.

公开(公告)号：US20180345812A1

公开(公告)日：2018-12-06

申请号：US15682331

申请日：2017-08-21

Applicant: Apple Inc.

Inventor： Nalin Chaturvedi ,  Yiming Lou ,  Wei He ,  Stephen D. Sterz

IPC: B60L11/18 ,  G01R31/36 ,  H01M10/48

Abstract: An electronic device may have a power system with a battery. The device may include power management circuitry that helps distribute power from the battery to components within the device. To prevent an excessive load from being applied to the battery and the battery from dropping below a cut-off voltage, power management circuitry may control power consumption by components in the device. Power consumption models in the power management circuitry may be used to ensure that maximum allowable power consumption levels are not exceeded. To help accurately and quickly manage power consumption decisions, each component may have characteristic power consumption values that characterize the power consumption profile of the component. These characteristic power consumption values may be provided to the power management circuitry with a request for power consumption and the power management circuitry may determine maximum allowable power consumption for the component based on the characteristic power consumption values.