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Power reception device and vehicle including the same

  • US 10,017,065 B2
  • Filed: 03/26/2015
  • Issued: 07/10/2018
  • Est. Priority Date: 04/04/2014
  • Status: Active Grant
First Claim
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1. A power reception device which is mounted on a vehicle and receives, in a contactless manner, electric power output from a power transmission device provided outside said vehicle, the power reception device comprising:

  • a power reception coil configured to receive, in a contactless manner, the electric power output from a power transmission coil of said power transmission device;

    a rectifying circuit for rectifying the electric power received by said power reception coil; and

    a notifying device configured to notify detection of the rising of said voltage;

    said power reception coil is configured such that, when said vehicle moves such that said power reception coil comes closer to said power transmission coil, a voltage characteristic indicating a relation between said distance and said voltage has first rising and second rising at which said distance is smaller than a position where said first rising occurs,said rectifying circuit including;

    a rectifier; and

    a capacitor provided on an output side of said rectifier,a voltage sensor provided on an output side of said rectifying circuit; and

    a control device configured to detect a distance between said power transmission coil and said power reception coil,said control device detecting rising of a voltage detected by said voltage sensor, and detecting said distance based on a movement distance of said vehicle from a reference distance indicative of said distance at which the rising of said voltage occurs, said reference distance being prepared in advance, andwhen the rising of said voltage is detected, said notifying device notifies said reference distance,when said first rising is detected, said notifying device notifies the detection of said first rising, and when said second rising is detected, said notifying device notifies the detection of said second rising.

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