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公开(公告)号：US20190069246A1
公开(公告)日：2019-02-28
申请号：US15692546
申请日：2017-08-31
Applicant: Google LLC
Inventor： Enrique Romero Pintado , Liang Jia , Srikanth Lakshmikanthan , Eklavya Singh
Abstract: Methods, systems, and devices, including machine-readable media, for dynamic battery power management are disclosed. In some implementations, an electronic device that is powered by a battery senses a voltage provided by the battery and an electric current provided by the battery. The electronic device determines a present state of the battery. The electronic device determines a current limit for the electronic device based on the sensed voltage and electric current and the determined present state of the battery. The electronic device manages power use of the electronic device to maintain electric current draw from the battery at or below the electric current limit.
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公开(公告)号：US20240371565A1
公开(公告)日：2024-11-07
申请号：US18742738
申请日：2024-06-13
Applicant: Google LLC
Inventor： Li Wang , Liyu Yang , Stefano Saggini , Liang Jia , Yanchao Li , Zhenxue Xu , Haoquan Zhang , Mauricio Antonio Alvarado Ortega , Giulia Segatti , Pingsheng Wu , Srikanth Lakshmikanthan , Qi Tian , Veera Venkata Siva Nagesh Polu , Yung-Chih Chen , Yi Lin Chen , Wei Chen Tu
Abstract: A wireless charging receiver that includes a first coil, a second coil, and a nanocrystalline sheet is disclosed. The first coil is configured to be located within a recess in the nanocrystalline sheet and is positioned between the second coil and the nanocrystalline sheet. The first coil includes first and second terminals and the second coil includes third and fourth terminals. The first terminal is connected to the third terminal and the second terminal is connected to the fourth terminal to electrically connect the first coil to the second coil. The first coil may be formed of a flexible printed circuit board having a continuous trace or may be formed of litz wire. The first coil may be a hybrid coil with a first portion formed of a flexible printed circuit board having a continuous trace and with a second portion formed of litz wire.
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公开(公告)号：US20240204576A1
公开(公告)日：2024-06-20
申请号：US18591804
申请日：2024-02-29
Applicant: Google LLC
Inventor： Qi Tian , Liang Jia , Tressa Christie Scott , Srikanth Lakshmikanthan
Abstract: The present disclosure provides for a wearable device having a wireless power receiving system that may inductively receive or transmit power. The wireless power receiving system includes a receiver coil having a profile that follows a contour of a bottom cover of the wearable device. A transmitter coil from a wireless charging device has a complementary profile that mates with the profile defined by the receiver coil. In one example, the wireless power receiving system includes a shielding, and a receiver coil attached to the shielding. The receiver coil further includes an inner wall and an outer wall connected by a top surface of a coil body. The inner wall defines a center opening in the receiver coil, wherein the receiver coil is conical in shape.
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公开(公告)号：US12003113B2
公开(公告)日：2024-06-04
申请号：US17128326
申请日：2020-12-21
Applicant: Google LLC
Inventor： Liang Jia
CPC classification number: H02J50/005 , A44C5/0053 , H01F38/14 , H02J7/0042 , H02J50/10 , H02J50/90 , H01F27/36
Abstract: Devices for wireless charging with metal housings. The device comprises a wireless power receiving coil and an associated coil core, wherein the coil core defines a recess and at least a portion of the wireless power receiving coil is disposed in the recess; and a housing comprising one or more metal portions, wherein the housing is configured to receive at least a portion of the wireless power receiving coil and the associated coil core in an opening defined by the one or more metal portions. Alternatively, the device comprises a wireless power receiving coil and an associated coil core; a housing comprising one or more metal portions; and an alignment feature configured to interact with a magnet of a wireless charger to align the device with the wireless charger, wherein the alignment feature comprises a plurality of metal elements that are electrically insulated from each other.
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公开(公告)号：US11949251B2
公开(公告)日：2024-04-02
申请号：US17065595
申请日：2020-10-08
Applicant: Google LLC
Inventor： Qi Tian , Liang Jia , Tressa Christie Scott , Srikanth Lakshmikanthan
Abstract: The present disclosure provides for a wearable device having a wireless power receiving system that may inductively receive or transmit power. The wireless power receiving system includes a receiver coil having a profile that follows a contour of a bottom cover of the wearable device. A transmitter coil from a wireless charging device has a complementary profile that mates with the profile defined by the receiver coil. In one example, the wireless power receiving system includes a shielding, and a receiver coil attached to the shielding. The receiver coil further includes an inner wall and an outer wall connected by a top surface of a coil body. The inner wall defines a center opening in the receiver coil, wherein the receiver coil is conical in shape.
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Patent Agency Ranking
公开(公告)号：US20230221813A1
公开(公告)日：2023-07-13
申请号：US18002192
申请日：2020-08-31
Applicant: Google LLC
Inventor： Liang Jia , Srikanth Lakshmikanthan , Liyu Yang
IPC: G06F3/0354 , H02J50/00 , H02J50/90 , H02J7/00
CPC classification number: G06F3/03545 , H02J7/0044 , H02J50/005 , H02J50/90
Abstract: An example active stylus includes a core comprising: a main cylinder having a first end, a second end; a first supplemental cylinder disposed at the first end of the main cylinder and having a diameter that is larger than a diameter of the main cylinder; a second supplemental cylinder disposed between the first supplemental cylinder and the second end of the main cylinder and having a diameter that is larger than the diameter of the main cylinder; and a wireless charging receive coil configured to transduce flux of a magnetic field generated by a wireless charging transmit coil into electrical current, wherein the wireless charging receive coil is positioned around a longitudinal axis of the main cylinder of the core and between the first supplemental cylinder and the second supplemental cylinder.
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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
Applicant: Google LLC
Inventor： Chao Fei , Honggang Sheng , Douglas Osterhout , Liang Jia , Srikanth Lakshmikanthan
Abstract: 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：US10945213B2
公开(公告)日：2021-03-09
申请号：US16351639
申请日：2019-03-13
Applicant: Google LLC
Inventor： Enrique Romero Pintado , Liang Jia , Srikanth Lakshmikanthan , Eklavya Singh
IPC: H04W52/02 , H02J7/00 , G01R31/389 , G01R31/36
Abstract: Methods, systems, and devices, including machine-readable media, for dynamic battery power management are disclosed. In some implementations, an electronic device that is powered by a battery senses a voltage provided by the battery and an electric current provided by the battery. The electronic device determines a present state of the battery. The electronic device determines a current limit for the electronic device based on the sensed voltage and electric current and the determined present state of the battery. The electronic device manages power use of the electronic device to maintain electric current draw from the battery at or below the electric current limit.
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公开(公告)号：US20210050882A1
公开(公告)日：2021-02-18
申请号：US16986522
申请日：2020-08-06
Applicant: Google LLC
Inventor： Liang Jia , Jae-Won Hwang
Abstract: The technology provides for a wearable device including a body and an accessory adapted to be attached to the body. The body includes a first coil configured to inductively transmit power. The body may further include first power management circuitry configured to control the first coil to transmit power according to a wireless charging standard, and to modulate the power transmitted through the first coil to transmit data according to a wireless communication standard. The accessory may include a second coil configured to inductively receive power. The accessory may further include second power management circuitry configured to control the second coil to receive the power transmitted through the first coil according to the wireless charging standard, and to control the second coil to receive the data transmitted through the first coil according to the wireless communication standard.
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公开(公告)号：US20200343777A1
公开(公告)日：2020-10-29
申请号：US16393526
申请日：2019-04-24
Applicant: Google LLC
Inventor： Liang Jia , Qi Tian , Liyu Yang , Veera Venkata Siva Nagesh Polu , Srikanth Lakshmikanthan , Rahul Apte , Jae-won Hwang , Srenik Suresh Mehta
Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for improving wireless charging. In some implementations, an electronic device determines a power demand of the electronic device. The electronic device includes a wireless power receiver including a wireless power receiving coil configured to receive power through inductive coupling with a wireless charge. The electronic device determines an operating voltage or operating frequency for the wireless charger based on the power demand of the electronic device. The electronic device sends, to the wireless charger, data indicating the operating voltage or operating frequency for the wireless charger.
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