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    Hybrid charger and inverter system
    1.
    发明授权
    Hybrid charger and inverter system 有权

    公开(公告)号：US11876458B2

    公开(公告)日：2024-01-16

    申请号：US17457377

    申请日：2021-12-02

    Applicant: Apple Inc.

    Inventor： Ashish K. Sahoo ,  Jie Lu ,  Brandon Pierquet ,  Anish Prasai

    IPC: H02J9/04 ,  H02M5/293 ,  H02M1/08 ,  H02J9/06 ,  H02M3/335 ,  H02M7/797 ,  H02J3/32 ,  H02J7/02

    CPC classification number: H02M5/2932 ,  H02J9/062 ,  H02M1/083 ,  H02M3/33584 ,  H02M7/797 ,  H02J3/32 ,  H02J7/02 ,  H02J2207/20

    Abstract: An electrical system can include an isolated bidirectional converter (having an input couplable to a grid connection and an output couplable to a battery) and an isolated converter (having an input coupled to the input of the isolated bidirectional converter and couplable to the grid connection, with an AC output coupled to a convenience outlet). The electrical system can further include a controller that controls operation of the converters to operate in one of a plurality of modes including a charging mode in which the isolated bidirectional converter operates in a forward direction to charge the battery and the non-isolated converter powers the convenience outlet from the grid connection, and a non-charging mode in which the isolated bidirectional converter operates in a reverse direction to power the non-isolated converter from the battery and the non-isolated converter powers the convenience outlet.

    Method and system for single stage battery charging
    2.
    发明授权
    Method and system for single stage battery charging 有权

    公开(公告)号：US11539231B1

    公开(公告)日：2022-12-27

    申请号：US16520036

    申请日：2019-07-23

    Applicant: Apple Inc.

    Inventor： Ashish K. Sahoo ,  Poornima Mazumdar ,  Nancy Y. Sun ,  Zaka Ullah Zahid ,  Dong Young Lee

    IPC: H02J7/00 ,  H02J7/04

    Abstract: Aspects of the present disclosure involve a system and method for providing a boosted voltage using a single stage dual active bridge converter. In one embodiment, the single stage dual active bridge converter is introduced for high voltage charging using phase shift and frequency control. Phase shift and frequency control can be implemented on duty cycled switches and pulse width modulated switches in order to achieve a desired output voltage. In another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a single-phase system that provides a voltage for charging a high voltage system. In yet another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a three-phase system that provides a voltage for charging a high voltage system.

    FAST ACTIVE CLAMP FOR POWER CONVERTERS
    4.
    发明申请
    FAST ACTIVE CLAMP FOR POWER CONVERTERS 有权

    公开(公告)号：US20220131539A1

    公开(公告)日：2022-04-28

    申请号：US17647220

    申请日：2022-01-06

    Applicant: Apple Inc.

    Inventor： Ashish K. Sahoo ,  Brandon Pierquet

    IPC: H03K17/687 ,  H02M1/08

    Abstract: A switching system can include a main switching device configured to switch a voltage, a gate driver having an output coupled to a drive terminal of the main switching device and configured to deliver a drive signal to the main switching device, and a clamp circuit. The clamp circuit can be coupled to the drive terminal of the main switching device. The clamp circuit can include a logic gate configured to drive a clamp switching device coupled to and configured to clamp a voltage at the drive terminal of the main switching device. A drive signal of the clamp switching device can be substantially complementary to the main switching device drive signal. The logic gate can provide at least a portion of a delay between switching transitions of the main switching device and switching transitions of the clamp switching device.

    Method and system for single stage battery charging
    7.
    发明授权
    Method and system for single stage battery charging 有权

    公开(公告)号：US10389166B1

    公开(公告)日：2019-08-20

    申请号：US15712795

    申请日：2017-09-22

    Applicant: Apple Inc.

    Inventor： Ashish K. Sahoo ,  Poornima Mazumdar ,  Nancy Y. Sun ,  Zaka Ullah Zahid ,  Dong Young Lee

    IPC: H02J7/04 ,  H02J7/00

    Abstract: Aspects of the present disclosure involve a system and method for providing a boosted voltage using a single stage dual active bridge converter. In one embodiment, the single stage dual active bridge converter is introduced for high voltage charging using phase shift and frequency control. Phase shift and frequency control can be implemented on duty cycled switches and pulse width modulated switches in order to achieve a desired output voltage. In another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a single-phase system that provides a voltage for charging a high voltage system. In yet another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a three-phase system that provides a voltage for charging a high voltage system.

    MULTI-PHASE CASCADED BRIDGE FOR DC/DC, AC/DC, AND DC/AC APPLICATIONS
    8.
    发明申请
    MULTI-PHASE CASCADED BRIDGE FOR DC/DC, AC/DC, AND DC/AC APPLICATIONS 有权

    公开(公告)号：US20240405686A1

    公开(公告)日：2024-12-05

    申请号：US18326557

    申请日：2023-05-31

    Applicant: Apple Inc.

    Inventor： Anish Prasai ,  Ashish K. Sahoo ,  Brandon Pierquet ,  Jie Lu

    IPC: H02M3/335 ,  H02M7/219 ,  H02M7/5387 ,  H02P27/06

    Abstract: An isolated switching converter can include an inverting bridge, a transformer, a rectifying bridge, and control circuitry. The inverting bridge can receive an input voltage and deliver an output voltage to the transformer primary windings. The inverting bridge can include a plurality of half bridges cascaded across the input voltage. Each half bridge can include an input capacitor; upper and lower switches coupled across the input capacitor and connected at a switch node; and a DC blocking capacitor coupled between the switch node and a primary winding terminal. The rectifying bridge can have an input coupled to the secondary windings of the transformer and can deliver an output voltage of the isolated switching converter. The control circuitry can monitor inverter feedback signal(s) and generate phase staggered inverter drive signal(s). The control circuitry can also monitor rectifier feedback signal(s) and generate rectifier drive signals that operate the rectifying bridge.

    USING BATTERY CHARGER AS A HEATER
    9.
    发明公开
    USING BATTERY CHARGER AS A HEATER 审中-公开

    公开(公告)号：US20240291304A1

    公开(公告)日：2024-08-29

    申请号：US18175884

    申请日：2023-02-28

    Applicant: Apple Inc.

    Inventor： Ashish K. Sahoo ,  Brandon Pierquet ,  Jie Lu ,  Anish Prasai

    IPC: H02J7/00 ,  H01M10/44 ,  H01M10/615 ,  H01M10/637 ,  H01M10/657 ,  H02M7/219

    CPC classification number: H02J7/0068 ,  H01M10/44 ,  H01M10/615 ,  H01M10/637 ,  H01M10/657 ,  H02M7/219

    Abstract: A battery charging system can include a first charger module having a first AC side couplable to an AC source and a first DC side couplable to a battery and first control circuitry that operates the first charger to charge or discharge the battery; and a second charger module having a second AC side couplable to the AC source and a second DC side couplable to the battery and second control circuitry that operates the second charger to generate heat, wherein: if the first charger module is charging the battery from the AC source, the second control circuitry operates the second charger to generate heat without delivering charging current to the battery; and if the second charger is discharging the battery to the AC source, the second control circuitry operates the second charger to generate heat without delivering current to the AC source.

    CHARGING AND BALANCING BATTERIES
    10.
    发明公开
    CHARGING AND BALANCING BATTERIES 审中-公开

    公开(公告)号：US20240258801A1

    公开(公告)日：2024-08-01

    申请号：US18162325

    申请日：2023-01-31

    Applicant: Apple Inc.

    Inventor： Ashish K. Sahoo ,  Brandon Pierquet ,  Matteo Telli

    IPC: H02J7/00 ,  H02J50/12 ,  H02M1/00 ,  H02M3/335

    CPC classification number: H02J7/0014 ,  H02J50/12 ,  H02M1/0058 ,  H02M3/33571 ,  H02M3/33576

    Abstract: A battery charging system can include a stacked half bridge rectifier having an upper half bridge (“UHB”) and a lower half bridge (“LHB”); a blocking capacitor and a winding coupled between a midpoint of the UHB and a midpoint of the LHB; a battery coupled between an upper terminal of the UHB and a lower terminal of the LHB; and control circuitry that can selectively operate the stacked half bridge rectifier as a switched capacitor converter using the blocking capacitor as a flying capacitor by alternating between: a first switching state in which lower switches of the UHB and LHB are closed while upper switches of the UHB and LHB are opened; and a second switching state in which upper switches of the UHB and LHB are closed; wherein the switched capacitor converter operates as a booster to charge the battery from a DC voltage lower than the battery voltage.

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