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.

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.

公开(公告)号：US11955908B2

公开(公告)日：2024-04-09

申请号：US17386543

申请日：2021-07-28

Applicant: Apple Inc.

Inventor： Ashish K. Sahoo ,  Brandon Pierquet

IPC: H02M7/797 ,  H02M1/08 ,  H02M3/155

CPC classification number: H02M7/797 ,  H02M1/08 ,  H02M3/155

Abstract: An energy storage system can include a battery, a power converter comprising a first plurality of switching devices coupled to the battery and a second plurality of switching devices coupled between the first plurality of switching devices and an AC power system, and control circuitry that determines whether the AC power system is a single/split phase system or a three phase system and operates the first and second pluralities of switching devices accordingly. The control circuitry can include a microcontroller and a plurality of voltage sensors each configured to monitor a magnitude and a phase of a voltage to allow the control circuitry to determine whether the AC power system is a single/split phase system or a three phase system and whether the AC power system is connected with a line to line or line to neutral fault condition.

公开(公告)号：US11888406B2

公开(公告)日：2024-01-30

申请号：US17457379

申请日：2021-12-02

Applicant: Apple Inc.

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

IPC: 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 AC-AC converter can include a stack of four switches. An input of the converter can be coupled across the stack of four switches, and an output of the converter can be taken from first terminal coupled to a connection point of first and second switches of the stack and a second terminal coupled to a connection point of third and fourth switches of the stack. The converter can further include a controller that operates the switches such that during a positive half cycle of an AC input voltage, the first and second switches are operated with an alternating 50% duty cycle and the third and fourth switches are constantly on, and during the negative half cycle of the AC input voltage, the third and fourth switches are operated with an alternating 50% duty cycle and the first and second switches are constantly on.

公开(公告)号：US20230096722A1

公开(公告)日：2023-03-30

申请号：US17457376

申请日：2021-12-02

Applicant: Apple Inc.

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

IPC: H02J7/02 ,  H02J3/32 ,  H02M7/797

Abstract: An electrical system can include a first bidirectional AC-DC converter having an input couplable to a grid connection and an output couplable to a battery and a second bidirectional AC-DC converter having an input couplable to the grid connection or a convenience outlet and an output couplable to the battery. The electrical system can further include a controller that controls the first and second converters to operate in a plurality of modes including a two-stage charging mode in which the first and second converters operate in a forward direction to charge the battery, a single-stage charging mode in which the first converter operates in a forward direction to charge the battery and the second converter operates in a reverse direction to power the convenience outlet, and a non-charging mode in which the first converter is idle and the second converter operates in a reverse direction to power the convenience outlet.

公开(公告)号：US11545973B2

公开(公告)日：2023-01-03

申请号：US17647220

申请日：2022-01-06

Applicant: Apple Inc.

Inventor： Ashish K. Sahoo ,  Brandon Pierquet

IPC: H03K17/687 ,  H02M1/08 ,  H03K19/20

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.

公开(公告)号：US20220190607A1

公开(公告)日：2022-06-16

申请号：US17547318

申请日：2021-12-10

Applicant: Apple Inc.

Inventor： Philip W. Juang ,  Christopher D. Laws ,  Brandon Pierquet ,  Giridhar N. Murching ,  William A. Braff

IPC: H02J7/00 ,  H02J7/34 ,  H01M50/502 ,  H01M10/46 ,  H01M10/42

Abstract: A system includes a first bus, a second bus, a first battery that includes a first plurality of cells, and a second battery that includes a second plurality of cells, wherein the second battery is connected to the second bus. A first converter connects the high-voltage battery to the first bus. A second converter connects the first bus to the second bus. A controller is configured to control operation of the first converter and the second converter.

公开(公告)号：US12191776B2

公开(公告)日：2025-01-07

申请号：US18533486

申请日：2023-12-08

Applicant: Apple Inc.

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

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

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.

公开(公告)号：US12155251B2

公开(公告)日：2024-11-26

申请号：US18068412

申请日：2022-12-19

Applicant: APPLE INC.

Inventor： Philip W. Juang ,  Christopher D. Laws ,  Brandon Pierquet ,  Giridhar N. Murching ,  William A. Braff

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/46 ,  H01M50/502 ,  H02J7/34

Abstract: A system includes a first bus, a second bus, a first battery that includes a first plurality of cells, and a second battery that includes a second plurality of cells, wherein the second battery is connected to the second bus. A first converter connects the first battery to the first bus. A second converter connects the first bus to the second bus. A controller is configured to control operation of the first converter and the second converter.

公开(公告)号：US20240258902A1

公开(公告)日：2024-08-01

申请号：US18162177

申请日：2023-01-31

Applicant: Apple Inc.

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

IPC: H02M1/08 ,  H02M3/335 ,  H02M7/219

CPC classification number: H02M1/083 ,  H02M3/33573 ,  H02M7/219

Abstract: A power conversion system can include at least one stacked half bridge converter that further includes a first half bridge further comprising two switching devices in a half bridge configuration and a first capacitor coupled thereacross and a second half bridge further comprising two switching devices in a half bridge configuration and a second capacitor coupled thereacross. The at least one stacked half bridge converter can be disposed between an input of the power conversion system and an output of the power conversion system. The power conversion system can further include a transformer coupled to the at least one stacked half bridge converter by a blocking capacitor and control circuitry that operates the switching devices of the at least one stacked half bridge converter as a switched capacitor converter using the blocking capacitor as a flying capacitor to equalize charge between the first and second capacitors.