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公开(公告)号：US09612288B2
公开(公告)日：2017-04-04
申请号：US14169667
申请日：2014-01-31
Applicant: Analog Devices Global
Inventor： Hua-Jung Yang , Janne Klemetti
CPC classification number: G01R31/3651 , G01R31/3624 , G01R31/3675 , H02J7/0016 , H02J7/0021 , H02J7/0031 , H02J7/0036 , H02J7/0073
Abstract: A device to determine a state of a battery is disclosed. One or more transistors provide a resistance between first and second nodes. The one or more transistors are configured to conduct a supply current from a battery between the first node and the second node. A measurement circuit measures the voltage generated between the first node and the second node. The measurement circuit further measures the supply voltage. A calculation circuit generates an estimate of the supply current based on the voltage measured between the first node and the second node and the resistance of the one or more transistors. The calculation circuit generates an estimate of the state of charge of the battery based on the measured supply voltage and the estimate of the supply current.
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公开(公告)号：US20180191192A1
公开(公告)日：2018-07-05
申请号：US15415055
申请日：2017-01-25
Applicant: Analog Devices Global
Inventor： Hua-Jung Yang , Suyi Yao
CPC classification number: H02J7/355 , H02J7/0052 , H02J7/007 , H02J50/30 , H02J50/80 , H02J2007/0059 , H02J2007/0062
Abstract: Embodiments of the disclosure can provide an optical charging system with an integrated sensor and power receiver. An electronic device (e.g., a wearable) can include an optical sensor for performing photometric measurements. A photodiode of the sensor can be shared and used for generating an electrical signal when exposed to a light source (e.g., LED) of a light power transmitter. The electrical signal can be conditioned by a power management circuit and can be used to charge a device battery. The light power transmitter can include a photodiode, which can be used for establishing a connection with the device using an optical signal emitted by a light source of the optical sensor. The light power transmitter can be power by, e.g., a USB connection. The intensity of the power transmitter light source can be regulated via a feedback signal from the device, based on the battery charging status.
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公开(公告)号：US10468906B2
公开(公告)日：2019-11-05
申请号：US15415055
申请日：2017-01-25
Applicant: Analog Devices Global
Inventor： Hua-Jung Yang , Suyi Yao
Abstract: Embodiments of the disclosure can provide an optical charging system with an integrated sensor and power receiver. An electronic device (e.g., a wearable) can include an optical sensor for performing photometric measurements. A photodiode of the sensor can be shared and used for generating an electrical signal when exposed to a light source (e.g., LED) of a light power transmitter. The electrical signal can be conditioned by a power management circuit and can be used to charge a device battery. The light power transmitter can include a photodiode, which can be used for establishing a connection with the device using an optical signal emitted by a light source of the optical sensor. The light power transmitter can be power by, e.g., a USB connection. The intensity of the power transmitter light source can be regulated via a feedback signal from the device, based on the battery charging status.
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公开(公告)号：US09306452B2
公开(公告)日：2016-04-05
申请号：US14229048
申请日：2014-03-28
Applicant: Analog Devices Global
Inventor： Hua-Jung Yang , Bin Shao , Suyi Yao , Yanfeng Lu
CPC classification number: H02M3/156 , H02J1/00 , H02J1/102 , H02J7/00 , H02J7/345 , H02M1/36 , Y10T307/313
Abstract: An apparatus comprises an output port for a circuit load, a first input port for an energy harvest source, an input/output port a second energy source, a first circuit path from the energy harvest source to the second energy source at the input/output port and to the variable load at the output port, a second circuit path from the second energy source to the output port, a cold start circuit that produces a first voltage level at the output port by charging a capacitor at the output port using energy of the energy harvest source, and a main converter circuit that produces a second regulated voltage level at the input/output port using energy of the energy harvest source when the voltage at the output port capacitor is above a specified voltage value and uses the energy of the capacitor at the output port during startup of the main converter circuit.
Abstract translation: 一种装置包括用于电路负载的输出端口，用于能量收集源的第一输入端口，第二能量源的输入/输出端口，输入/输出端处的能量收集源至第二能量源的第一电路路径 端口和输出端口处的可变负载，从第二能量源到输出端口的第二电路路径，冷启动电路，其通过在输出端口处对电容器充电而在输出端口处产生第一电压电平， 能量收集源和主转换器电路，其在输出端口电容器处的电压高于指定电压值时使用能量收集源的能量在输入/输出端口处产生第二调节电压电平，并且使用 在主转换器电路启动期间输出端口处的电容器。
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