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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
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.
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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
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.
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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
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.
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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.
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公开(公告)号：US12047010B2
公开(公告)日：2024-07-23
申请号：US17457376
申请日：2021-12-02
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Jie Lu , Brandon Pierquet , Anish Prasai
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 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.
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Patent Agency Ranking
公开(公告)号：US12021401B2
公开(公告)日：2024-06-25
申请号：US18153744
申请日：2023-01-12
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
CPC classification number: H02J7/0014 , H02J3/38 , H02J7/04 , H02M7/219
Abstract: A charger for a battery power system can include first and second switching bridges with inputs couplable to an AC source, at least one transformer having two or more primary windings (connected in series and coupled to the switching bridges) and at least two secondary windings, and second rectifier/chargers, each coupled to at least one of the secondary windings and couplable to at least one battery. The switching bridges may be respectively operable during positive and negative half cycles of the AC source to deliver an AC voltage to the transformer. The rectifier/chargers may be operable in a first mode to receive an AC voltage from the transformer and deliver a DC voltage for charging the respective battery. In some multi-battery embodiments, the rectifier/chargers may also be operable in a second mode to deliver an AC voltage from a respective battery to the transformer to balance charge between the batteries.
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公开(公告)号：US20230030746A1
公开(公告)日：2023-02-02
申请号：US17387093
申请日：2021-07-28
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet , Derryk C. Davis , Javier Ruiz , John M. Brock
IPC: H01L29/20 , H01L23/31 , H01L23/36 , H01L23/14 , H01L23/522 , H01L23/532 , H01L27/088
Abstract: Integrated power modules according to the present technology may include a printed circuit board characterized by a first surface and a second surface. The integrated power modules may include one or more surface-mounted components coupled with the first surface of the printed circuit board. The integrated power modules may include a heat-transfer substrate. The integrated power modules may include one or more gallium nitride transistors coupled between and soldered to each of the second surface of the printed circuit board and the heat-transfer substrate. The integrated power modules may include one or more spacers coupled between and soldered to each of the printed circuit board and the heat-transfer substrate.
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公开(公告)号：US20230029981A1
公开(公告)日：2023-02-02
申请号：US17386543
申请日：2021-07-28
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
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
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公开(公告)号：US20220271646A1
公开(公告)日：2022-08-25
申请号：US17182856
申请日：2021-02-23
Applicant: Apple Inc.
Inventor： Jie Lu , Brandon Pierquet , Ashish K. Sahoo
Abstract: A stacked half bridge converter may be configured to provide an AC output voltage from either a DC or an AC input voltage. The switching devices of the converter may be operated according to a plurality of switching sequences, each switching sequence including one or more switching patterns, each switching pattern including one or more switching states of the switching devices. The switching sequences, patterns, and states may be selected to improve operation of the converter, by regulating the voltage at a neutral point of the converter to reduce ripple, increase switching efficiency, protect the switching devices from overvoltages, and the like.
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公开(公告)号：US20220102986A1
公开(公告)日：2022-03-31
申请号：US17032721
申请日：2020-09-25
Applicant: Apple Inc.
Inventor： Ashish K. Sahoo , Brandon Pierquet
Abstract: A charger for a battery power system can include first and second switching bridges with inputs couplable to an AC source, at least one transformer having two or more primary windings (connected in series and coupled to the switching bridges) and at least two secondary windings, and second rectifier/chargers, each coupled to at least one of the secondary windings and couplable to at least one battery. The switching bridges may be respectively operable during positive and negative half cycles of the AC source to deliver an AC voltage to the transformer. The rectifier/chargers may be operable in a first mode to receive an AC voltage from the transformer and deliver a DC voltage for charging the respective battery. In some multi-battery embodiments, the rectifier/chargers may also be operable in a second mode to deliver an AC voltage from a respective battery to the transformer to balance charge between the batteries.
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