18522429. POWER SUPPLY SYSTEM simplified abstract (DENSO CORPORATION)
Contents
POWER SUPPLY SYSTEM
Organization Name
Inventor(s)
Yusei Nakayashiki of Kariya-city (JP)
Masaya Takahashi of Kariya-city (JP)
Nobuhisa Yamaguchi of Kariya-city (JP)
Eisuke Takahashi of Kariya-city (JP)
POWER SUPPLY SYSTEM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18522429 titled 'POWER SUPPLY SYSTEM
Simplified Explanation
The patent application describes a power supply system that includes a power transmission circuit, a high frequency generation circuit, a measurement unit, and a control unit. The system can adjust the impedance of the power transmission circuit based on the degree of coupling between the power transmission circuit and a power reception circuit in a vehicle, setting it to either a resonant or non-resonant state.
- Power supply system with adjustable impedance
- High frequency electric power transmission
- Measurement of coupling between circuits
- Control unit for impedance adjustment based on coupling degree
Potential Applications
The technology could be used in wireless charging systems for electric vehicles, medical devices, or consumer electronics.
Problems Solved
This technology solves the problem of inefficient power transfer due to varying degrees of coupling between the power transmission and reception circuits.
Benefits
The system allows for optimized power transfer efficiency by adjusting the impedance of the power transmission circuit accordingly.
Potential Commercial Applications
"Wireless Charging System with Adjustable Impedance for Electric Vehicles"
Possible Prior Art
Prior art may include existing wireless power transfer systems that do not have the capability to adjust impedance based on coupling degree.
=== What are the specific physical quantities measured by the measurement unit in the system? The specific physical quantities measured by the measurement unit could include voltage, current, or phase difference between the power transmission and reception circuits.
=== How does the control unit determine whether to set the power transmission circuit to a resonant or non-resonant state? The control unit determines whether to set the power transmission circuit to a resonant or non-resonant state based on the measured degree of coupling between the circuits. If the coupling is below a predetermined threshold, the circuit is set to a non-resonant state; otherwise, it is set to a resonant state.
Original Abstract Submitted
A power supply system includes: a power transmission circuit provided on the ground side; a high frequency generation circuit that supplies high-frequency electric power to the power transmission circuit; a measurement unit that measures a physical quantity corresponding to the degree of coupling between the power transmission circuit and a power reception circuit provided in a vehicle; and a control unit. When the degree of coupling is determined, based on the measured physical quantity, to be lower than a predetermined degree, the control unit sets the impedance of the power transmission circuit to a first impedance and thereby sets the power transmission circuit to a non-resonant state. In contrast, when the degree of coupling is determined to be not lower than the predetermined degree, the control unit sets the impedance of the power transmission circuit to a second impedance and thereby sets the power transmission circuit to a resonant state.
