Toyota jidosha kabushiki kaisha (20240113565). POWER RECEIVING DEVICE AND CONTACTLESS POWER TRANSMISSION SYSTEM simplified abstract

POWER RECEIVING DEVICE AND CONTACTLESS POWER TRANSMISSION SYSTEM

Organization Name

toyota jidosha kabushiki kaisha

Inventor(s)

Ryosuke Ikemura of Susono-shi (JP)

Shogo Tsuge of Fuji-shi (JP)

Masato Maemura of Nisshin-shi (JP)

Toshiya Hashimoto of Miyoshi-shi (JP)

POWER RECEIVING DEVICE AND CONTACTLESS POWER TRANSMISSION SYSTEM - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240113565 titled 'POWER RECEIVING DEVICE AND CONTACTLESS POWER TRANSMISSION SYSTEM

Simplified Explanation

The patent application describes a power receiving device that includes a power receiving coil, a rectifier circuit, a smoothing capacitor, and a control device that can execute a short-circuit mode. The control device is able to acquire information about the drive frequency of the power transmission device, set the switching frequency of the rectifier circuit to a different value from the drive frequency, and execute the short-circuit mode based on the set switching frequency.

• Power receiving device components:

   - Power receiving coil
   - Rectifier circuit
   - Smoothing capacitor
   - Control device

• Control device functions:

   - Acquires drive frequency information
   - Sets switching frequency of rectifier circuit
   - Executes short-circuit mode based on set switching frequency

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1. 1. 1. Potential Applications

The technology described in the patent application could be applied in wireless charging systems for electronic devices, electric vehicles, and industrial machinery.

1. 1. 1. Problems Solved

This technology solves the problem of efficiently receiving and converting power wirelessly while ensuring safe operation through the implementation of a short-circuit mode.

1. 1. 1. Benefits

- Improved efficiency in wireless power transmission - Enhanced safety features with the short-circuit mode - Simplified power receiving device design

1. 1. 1. Potential Commercial Applications
         1. Wireless Charging Systems Optimization

This technology can be utilized to optimize wireless charging systems for various applications, including consumer electronics and electric vehicles.

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1. 1. 1. Possible Prior Art

One possible prior art related to this technology is the concept of resonant inductive coupling for wireless power transfer, where the resonance frequency of the power transmission and receiving coils is matched to maximize power transfer efficiency.

1. 1. 1. Unanswered Questions

1. 1. 1. 1. How does the control device determine the optimal switching frequency for the rectifier circuit?

The patent application does not provide specific details on the algorithm or method used by the control device to set the switching frequency.

1. 1. 1. 1. What safety measures are in place to prevent overheating or overloading of the power receiving device?

The patent application mentions a short-circuit mode as a safety feature, but it does not elaborate on other safety mechanisms implemented in the device.

Original Abstract Submitted

a power receiving device includes: a power receiving coil receiving power transmitted from a power transmission coil; a rectifier circuit between the power receiving coil and a load; a smoothing capacitor between the rectifier circuit and the load; and a control device executing a short-circuit mode of short-circuiting between output ends of the power receiving coil. further, the control device includes an acquisition unit acquiring information indicating a drive frequency of an inverter in the power transmission device, a setting unit setting a switching frequency of the rectifier circuit to a value different from the drive frequency of the inverter, and a control unit executing the short-circuit mode based on the switching frequency set by the setting unit.