FIELD: electrical engineering.
SUBSTANCE: wireless power receiving device includes: a wireless power receiving coil, an AC-DC circuit, a capacitive step-down circuit and a storage battery, wherein capacitor step-down circuit includes at least two capacitors and switch; output terminal of wireless power receiving coil is connected to input terminal of AC-DC circuit, and output terminal of AC-DC circuit is connected to input terminal of capacitor-type step-down circuit, and output terminal of capacitor-type step-down circuit is connected to accumulator battery; when the switch is in the first connection state, at least two capacitors are in a serial state and accumulate energy; and when the switch is in the second connection state, at least two capacitors are in a parallel state and release energy.
EFFECT: higher efficiency of charging.
13 cl, 12 dwg
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