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1.发明申请METHOD AND APPARATUS FOR HIGH EFFICIENCY AC/DC CONVERSION OF LOW VOLTAGE INPUT 审中-公开低电压输入高效交流/直流转换的方法与装置公开(公告)号：US20140347902A1
公开(公告)日：2014-11-27
申请号：US14293727
申请日：2014-06-02
发明人： Shuo Cheng , Yuan Rao
IPC分类号： H02M7/06
CPC分类号： H02M7/06 , H02M7/217 , H02M2007/2195 , Y02B70/1408
摘要： Embodiments of the subject invention relate to a method and apparatus for providing a low-power AC/DC converter designed to operate with very low input voltage amplitudes. Specific embodiments can operate with input voltages less than or equal to 1 V, less than or equal to 200 mV, and as low as 20 mV, respectively. Embodiments of the subject low-power AC/DC converter can be utilized in magnetic induction energy harvester systems. With reference to a specific embodiment, a maximum efficiency of 92% was achieved for a 1 V input, and efficiencies exceeding 70% were achieved for a 200 mV input. A specific embodiment functioned properly when connected to a magnetic energy harvester device operating below 200 mV input.
摘要翻译： 本发明的实施例涉及一种用于提供设计成以非常低的输入电压幅度工作的低功率AC / DC转换器的方法和装置。 具体实施例可以分别在小于或等于1V，小于或等于200mV以及低至20mV的输入电压下工作。 本发明的低功率AC / DC转换器的实施例可以用于磁感应能量收集器系统中。 参考具体实施例，对于1V输入，实现了92％的最大效率，并且对于200mV输入实现了超过70％的效率。 当连接到工作在低于200mV输入的磁能收集器装置时，特定的实施例适当地起作用。
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公开(公告)号：US20220247213A1
公开(公告)日：2022-08-04
申请号：US17719472
申请日：2022-04-13
摘要： Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.
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公开(公告)号：US20200153280A1
公开(公告)日：2020-05-14
申请号：US16735437
申请日：2020-01-06
摘要： Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.
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公开(公告)号：US11689089B2
公开(公告)日：2023-06-27
申请号：US17719472
申请日：2022-04-13
IPC分类号： H02K35/02 , H02J50/10 , H02J50/50 , H02K99/00 , H02N1/08 , H02J50/00 , H02J50/70 , H02J50/90 , H02J50/12
CPC分类号： H02K35/02 , H02J50/00 , H02J50/001 , H02J50/10 , H02J50/12 , H02J50/50 , H02J50/70 , H02J50/90 , H02K99/10 , H02N1/08
摘要： Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.
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公开(公告)号：US11309736B2
公开(公告)日：2022-04-19
申请号：US16735437
申请日：2020-01-06
摘要： Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.
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