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公开(公告)号：US12125631B2
公开(公告)日：2024-10-22
申请号：US16978924
申请日：2019-08-05
申请人： Google LLC
CPC分类号： H01F27/289 , H01F27/361 , H01F27/38 , H02M1/44 , H02M7/04
摘要： Shielded electrical transformers and power converters using those transformers are disclosed. In some implementations, a shielded electrical transformer includes a magnetic core, a primary winding, a first secondary winding, and a second secondary winding. The transformer includes a first shielding winding that has a same voltage potential direction as the primary winding and is connected in series with the primary winding to carry current that passes through the primary winding. The transformer also includes a second shielding winding that has a voltage potential direction opposite the primary winding and is connected from primary ground to a floating terminal. The first secondary winding, the second secondary winding, the first shielding winding, and the second shielding winding can each have an approximately equal number of turns.
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公开(公告)号：US20230179010A1
公开(公告)日：2023-06-08
申请号：US17997782
申请日：2020-05-04
申请人： Google LLC
CPC分类号： H02J7/342 , H02J7/0019 , H02J7/0063 , H02J2207/20 , G06F1/1652
摘要： In general, techniques are described that are directed to a device having a first power storage device and a second power storage device connected in series. A first power converter may generate, using electrical energy sourced from the first power storage device and the second power storage device, a first power signal to power a first set of components. A second power converter may generate, using electrical energy sourced from the first power storage device and not the second power storage device, a second power signal to power a second set of components.
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公开(公告)号：US20210366647A1
公开(公告)日：2021-11-25
申请号：US16978924
申请日：2019-08-05
申请人： Google LLC
摘要： Shielded electrical transformers and power converters using those transformers are disclosed. In some implementations, a shielded electrical transformer includes a magnetic core, a primary winding, a first secondary winding, and a second secondary winding. The transformer includes a first shielding winding that has a same voltage potential direction as the primary winding and is connected in series with the primary winding to carry current that passes through the primary winding. The transformer also includes a second shielding winding that has a voltage potential direction opposite the primary winding and is connected from primary ground to a floating terminal. The first secondary winding, the second secondary winding, the first shielding winding, and the second shielding winding can each have an approximately equal number of turns.
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公开(公告)号：US20200220368A1
公开(公告)日：2020-07-09
申请号：US16242517
申请日：2019-01-08
申请人： Google LLC
摘要： An adapter can include a voltage doubler rectifier, a first stage converter, and a second stage converter. The voltage doubler rectifier can have a switch and can be configured to rectify a received voltage in response to the switch being in a first position, and to rectify and effectively double the received voltage in response to the switch being in a second position. The first stage converter can be coupled to the voltage doubler rectifier and can be a first type of converter. The first type of converter can be either an isolated converter or a non-isolated converter. The second stage converter can be coupled to the first stage converter and can be a second type of converter. The second type of converter can be either the isolated converter or the non-isolated converter. The second type of converter can be different from the first type of converter.
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公开(公告)号：US11916478B2
公开(公告)日：2024-02-27
申请号：US17425375
申请日：2020-08-31
申请人： Google LLC
发明人： Chao Fei , Douglas Osterhout , Srikanth Lakshmikanthan , Liang Jia , Li Wang
CPC分类号： H02M3/156 , H02J7/00308 , H02J7/00716 , H02J7/342
摘要： In general, techniques are described that are directed to a device that includes a power storage device, an electrical load, and a first regulated power converter including components configured to generate, during a first time period and using electrical energy received from a power source external to the device, a first power signal to charge the power storage device. A second regulated power converter includes components configured to determine a charging current at which to charge the power storage device, determine a total amount of current flowing to the power storage device that includes current sourced by the second power converter less current sinked by the electrical load, and generate, during a second time period that is non-overlapping with the first time period, using electrical energy from the power source and based on determined the total amount of current, a second power signal to charge the power storage device.
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公开(公告)号：US20220302734A1
公开(公告)日：2022-09-22
申请号：US17425375
申请日：2020-08-31
申请人： Google LLC
发明人： Chao Fei , Douglas Osterhout , Srikanth Lakshmikanthan , Liang Jia , Li Wang
摘要： In general, techniques are described that are directed to a device that includes a power storage device, an electrical load, and a first regulated power converter including components configured to generate, during a first time period and using electrical energy received from a power source external to the device, a first power signal to charge the power storage device. A second regulated power converter includes components configured to determine a charging current at which to charge the power storage device, determine a total amount of current flowing to the power storage device that includes current sourced by the second power converter less current sinked by the electrical load, and generate, during a second time period that is non-overlapping with the first time period, using electrical energy from the power source and based on determined the total amount of current, a second power signal to charge the power storage device.
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