Nuvolta Technologies (hefei) Co., Ltd.

Kaiyong Cui

Zeng Li

Zhengyu Li

Zhijun Luo

Min Yang

An apparatus includes a receiver coil configured to be magnetically coupled to a transmitter coil, and a rectifier circuit coupled to two terminals of the receiver coil, wherein in response to a high system gain of the apparatus, the rectifier circuit is configured as a half-bridge rectifier, and in response to a low system gain of the apparatus, the rectifier circuit is configured as a full-bridge rectifier.

Rectifier in low gain wireless power transfer system

An apparatus includes a controller configured to control switches of a rectifier circuit, wherein the rectifier circuit is coupled to two terminals of a receiver coil configured to be magnetically coupled to a transmitter coil of a wireless power transfer system, and wherein in response to a high system gain of the wireless power transfer system, the controller configures the rectifier circuit as a half-bridge rectifier, and in response to a low system gain of the wireless power transfer system, the controller configures the rectifier circuit as a full-bridge rectifier.

An apparatus includes a controller configured to control switches of a receiver, the receiver comprising a first receiver coil configured to be magnetically coupled to a transmitter coil of a wireless power transfer system, a rectifier circuit coupled to two terminals of the first receiver coil, a second receiver coil and a first auxiliary switch, wherein the second receiver coil is connected in series with the first auxiliary switch, and the second receiver coil is configured to be magnetically coupled to the transmitter coil, and wherein in response to a low power mode of the apparatus, the controller is configured to turn on the first auxiliary switch such that the first receiver coil and the second receiver coil are connected in series to boost a gain of the wireless power transfer system.

Low gain wireless power transfer system and method

An apparatus includes a first receiver coil configured to be magnetically coupled to a transmitter coil, a rectifier circuit coupled to two terminals of the first receiver coil, a second receiver coil and a first auxiliary switch connected in series, wherein the second receiver coil is configured to be magnetically coupled to the transmitter coil, and in response to a low power mode of the apparatus, the first auxiliary switch is configured to be turned on such that the first receiver coil and the second receiver coil are connected in series to boost a gain of the apparatus.

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Shanghai, China

Kaiyong Cui