NON-CONTACT CHARGE SYSTEM

• Main Authors: SUGIYAMA YOSHINOBU, SUZUKI DAISUKE
• Format: Patent
• Language: English; Japanese
• Published: 13.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; INDUCTANCES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MAGNETS; PERFORMING OPERATIONS; POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSFORMERS; TRANSPORTING; VEHICLES IN GENERAL

To provide a non-contact charge system in which, even when a coupling coefficient between a power feeding coil and a power receiving coil is not equal to a reference coupling coefficient, an output current of an inverter can be reduced to enhance the charge efficiency.SOLUTION: A power receiving device of a non-contact charge system includes a capacitor that is connected in parallel with a resonance circuit, and a coil that is connected in series with the resonance circuit. When a coupling coefficient between a power feeding coil and a power receiving coil is not equal to a reference coupling coefficient, the capacitance of the capacitor is adjusted to be inhibited from changing with respect to a reactance based on a reference coupling coefficient of a reactance in association with a mutual inductance. The inductance of the coil is adjusted in such a way that the reactance of the coil matches the reactance of the capacitor.SELECTED DRAWING: Figure 1 【課題】送電コイルと受電コイル間の結合係数が基準結合係数と異なる場合であっても、インバータの出力電流を低減し充電効率を高めることが可能な非接触充電システムを提供する。【解決手段】非接触充電システムの受電装置は、共振回路に並列に接続されるコンデンサと、共振回路に直列に接続されコイルと、を備える。コンデンサのキャパシタンスは、送電コイルと受電コイル間の結合係数が基準結合係数と異なる場合、相互インダクタンスに伴うリアクタンスの基準結合係数のもとでのリアクタンスに対する変化を抑えるように調整されている。コイルのインダクタンスは、コイルのリアクタンスがコンデンサのリアクタンスと一致するように調整されている。【選択図】図１