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公开(公告)号：US20230253802A1
公开(公告)日：2023-08-10
申请号：US17650322
申请日：2022-02-08
Applicant: Apple Inc.
Inventor： Baifeng Chen , Xingqun Li , Di Zhao , Chao Ma
IPC: H02J7/00
CPC classification number: H02J7/0013 , H02J7/005 , H02J7/0031 , H02J2207/20
Abstract: A multi-cell battery powered device can include at least one power input, a first power converter coupled between the power input and a battery bus, a second power converter coupled between the battery bus and a system load of the electronic device, a plurality of cells, and a plurality of primary battery protection switches. The primary battery protection switches can be selectively operable to couple the plurality of cells in: (1) a parallel configuration in which the cells are coupled to the battery bus so as to charge or discharge in parallel, (2) a series configuration in which the cells are coupled to the battery bus so as to charge or discharge in series, and (3) an isolated configuration in which at least one of the plurality of cells is coupled to the battery bus and at least one of the plurality of cells is disconnected from the battery bus.
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公开(公告)号：US11095119B2
公开(公告)日：2021-08-17
申请号：US16259983
申请日：2019-01-28
Applicant: Apple Inc.
Inventor： Roderick D. Bacon , Nagendra Bage Jayaraj , Derek J. DiCarlo , Chi Kin Ho , Xingqun Li , Jahan C. Minoo , Surya Musunuri , Tony Chi Wang Ng , Carlos Ribas , Ching Yu John Tam , Evan J. Thompson , Daniel C. Wagman , Di Zhao , Robert D. Zupke
IPC: H02H9/04 , G06F13/40 , H04L12/40 , H01R13/66 , H01R13/713 , H01R24/60 , H01R107/00
Abstract: A voltage of a first pin that is one of several pins of an external connector of a system is measured, while the first pin is un-driven except for being pulled to ground through a first resistance, and a second pin of the external connector is being used as a power supply rail of the system. The measured voltage is compared to a short circuit threshold and in response to that threshold being exceeded, the power supply voltage on the second pin is reduced. In such an embodiment, no test stimulus needs to be applied to any of the pins of the external connector. Other embodiments are also described and claimed.
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公开(公告)号：US20240077932A1
公开(公告)日：2024-03-07
申请号：US18122410
申请日：2023-03-16
Applicant: Apple Inc.
Inventor： Talbott M. Houk , Wenxun Huang , Nikola Jovanovic , Floyd L. Dankert , Sanjay Pant , Alessandro Molari , Siarhei Meliukh , Nicola Florio , Ludmil N. Nikolov , Nathan F. Hanagami , Hartmut Sturm , Di Zhao , Chad L. Olson , John J. Sullivan , Seyedeh Maryam Mortazavi Zanjani , Tristan R. Hudson , Jay B. Fletcher , Jonathan A. Dutra
IPC: G06F1/3296 , G06F1/3212 , G06F1/3234
CPC classification number: G06F1/3296 , G06F1/3212 , G06F1/3278
Abstract: The present disclosure describes a system with a power management device, a wakeup circuit, a battery management device, and a connector. During a powered down mode of operation, the battery management device can provide, via the connector, a bias voltage to the wakeup circuit. In response to a wakeup switch being activated, the battery management device can provide a power supply (e.g., from a battery) to the power management device. Benefits of the wakeup circuit include (1) a reduction of battery consumption—and thus improving battery lifetime—when the electronic system is in a powered down mode of operation because the wakeup circuit has lower number of active components compared to other designs and (2) a non-complex wakeup circuit design because one or more existing connector interconnects between the power management device and the battery management device can be re-used during electronic system's powered down mode of operation.
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Patent Agency Ranking
公开(公告)号：US20230006450A1
公开(公告)日：2023-01-05
申请号：US17447488
申请日：2021-09-13
Applicant: Apple Inc.
Inventor： Weiyun Chen , Di Zhao
Abstract: A battery powered electronic device can include a wireless power system configured to receive power from a wireless power transmitter, a converter coupled to the wireless power system that converts a voltage from the wireless power system to a battery charging voltage, a battery comprising at least two cells, a power management unit that delivers power from one or more of the at least two cells to one or more subsystems of the electronic device, and a plurality of switching devices connecting the at least two cells, the converter, and the power management unit. The plurality of switching devices can be arranged so that a first switching configuration connects the cells in series for charging from the converter and a second switching configuration connects the cells in parallel for delivering power to the power management unit.
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公开(公告)号：US11183864B2
公开(公告)日：2021-11-23
申请号：US16125611
申请日：2018-09-07
Applicant: Apple Inc.
Inventor： Bin Gu , Yongxuan Hu , Stephen C. Terry , Di Zhao , Ruchi J. Parikh , Michael D. Black , Weiyun Chen
Abstract: An electronic device may receive or provide power using bidirectional wired and wireless power converters. A bypass path may be included to bypass the battery charger and to allow direct power transfers from a connector of the electronic device to the wireless power converter or from the wireless power converter to the connector of the electronic device. Current limiting and regulation circuitry may also be included.
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公开(公告)号：US10855179B2
公开(公告)日：2020-12-01
申请号：US15471042
申请日：2017-03-28
Applicant: Apple Inc.
Inventor： Khaleel Shaik , Di Zhao , Sivasankari Krishnanji
Abstract: A power converter may be adapted to provide an output voltage from one of two input voltages. The power converter may include two or more buck converters that share a plurality of power converter components and each converts an individual input voltage to the output voltage. The power converter may include any of a variety of charge equalizing components that may be coupled between input terminals and optional input capacitors, which are coupled between the input terminals and ground. The charge equalizing component(s) provide(s) a fast conduction path for the equalization of input voltages and charge/voltage of the optional input capacitors. The charge equalizing component(s) can mitigate large currents created by differential voltages between the input terminals, which currents would otherwise flow through and potentially damage or destroy the power converter's switching devices.
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公开(公告)号：US20190222122A1
公开(公告)日：2019-07-18
申请号：US16365748
申请日：2019-03-27
Applicant: Apple Inc.
Inventor： Jamie L. Langlinais , Di Zhao
IPC: H02M3/158
CPC classification number: H02M3/158 , H02M2001/0009
Abstract: A method for dc-dc power conversion using a switching phase. While a high side switch of the phase is closed, detecting that a high side current of the phase has risen to a set peak limit, and in response opening the high side switch. While the high side switch is open, preventing the high side switch from closing so long as a valley limit reached condition has not been detected, wherein the valley limit reached condition is detected when a low side current of the phase has dropped to a set valley limit. Other embodiments are also described and claimed.
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公开(公告)号：US20180198368A1
公开(公告)日：2018-07-12
申请号：US15471042
申请日：2017-03-28
Applicant: Apple Inc.
Inventor： Khaleel Shaik , Di Zhao , Sivasankari Krishnanji
CPC classification number: H02M3/158 , H02J7/0052 , H02J7/0055 , H02J7/025 , H02J7/35 , H02J2007/0059 , H02J2007/0062
Abstract: A power converter may be adapted to provide an output voltage from one of two input voltages. The power converter may include two or more buck converters that share a plurality of power converter components and each converts an individual input voltage to the output voltage. The power converter may include any of a variety of charge equalizing components that may be coupled between input terminals and optional input capacitors, which are coupled between the input terminals and ground. The charge equalizing component(s) provide(s) a fast conduction path for the equalization of input voltages and charge/voltage of the optional input capacitors. The charge equalizing component(s) can mitigate large currents created by differential voltages between the input terminals, which currents would otherwise flow through and potentially damage or destroy the power converter's switching devices.
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