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公开(公告)号：US11283278B2
公开(公告)日：2022-03-22
申请号：US16664274
申请日：2019-10-25
Applicant: Apple Inc.
Inventor： Soham Banerjee , Jeyakkrishnan Chengleput Srinivasan , Kirill Kalinichev , Antonio De Lima Fernandes , Jason Brinsfield , Mary-Ann Ionascu
Abstract: An electronic system can include a charged system and a charging system. The charged system can include a charger and a battery configured to be charged thereby. The charger may be configured to receive power from a charging system that includes a power converter configured to supply power to the charger and a controller configured to control the power converter. The controller may be configured to receive feedback information from the charged system, including one or more voltages. The controller may be further configured to determine an output voltage compensation value for the power converter as a function of the feedback information and to set an output voltage of the power converter as a function of the compensation value. The compensation value and output voltage may be selected to maintain a preselected headroom between a battery charging target voltage of the charger and a voltage supplied to the charger.
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公开(公告)号：US20210126470A1
公开(公告)日：2021-04-29
申请号：US16664274
申请日：2019-10-25
Applicant: Apple Inc.
Inventor： Soham Banerjee , Jeyakkrishnan Chengleput Srinivasan , Kirill Kalinichev , Antonio De Lima Fernandes , Jason Brinsfield , Mary-Ann Ionascu
Abstract: An electronic system can include a charged system and a charging system. The charged system can include a charger and a battery configured to be charged thereby. The charger may be configured to receive power from a charging system that includes a power converter configured to supply power to the charger and a controller configured to control the power converter. The controller may be configured to receive feedback information from the charged system, including one or more voltages. The controller may be further configured to determine an output voltage compensation value for the power converter as a function of the feedback information and to set an output voltage of the power converter as a function of the compensation value. The compensation value and output voltage may be selected to maintain a preselected headroom between a battery charging target voltage of the charger and a voltage supplied to the charger.
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公开(公告)号：US20210099002A1
公开(公告)日：2021-04-01
申请号：US16741631
申请日：2020-01-13
Applicant: Apple Inc.
Inventor： Soham Banerjee , Mary-Ann Ionascu
Abstract: Embodiments of the present disclosure provide systems, methods, and computer-readable storage devices for determining a state of charge of a battery. A temperature, electrical current value, and voltage of the battery of a computing device may be obtained. A charging tier of a multi-tiered charging scheme may be identified based at least in part on the temperature and the voltage. An electrical current rate to be applied to the battery may be obtained using the temperature, the voltage of the battery, and the identified charging tier. A mapping may be obtained based at least in part on whether the battery is being charged during a constant voltage phase or a constant electrical current phase of the charging tier. A state of charge of the battery may be determined using the mapping and either the voltage or the electrical current value. The state of charge may be presented at an output device.
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