Non-contact power receiving apparatus, non-contact power transmitting apparatus, and non-contact power transmitting/receiving system
A power receiving device, non-contact technology, applied in the direction of power consumption devices, circuit devices, electromagnetic wave systems, etc., can solve the problem of low transmission efficiency and achieve the effect of avoiding efficiency reduction
Active Publication Date: 2014-09-03
TOYOTA JIDOSHA KK
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Problems solved by technology
[0003] However, in the magnetic resonance method, there is an optimal distance, and when the distance is too short, the transmission efficiency will decrease
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[0058] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code|symbol is attached|subjected to the same or equivalent part in a figure, and the description is not repeated.
[0059] figure 1 is an overall configuration diagram of a power transmission and reception system according to an embodiment of the present invention.
[0060] refer to figure 1 , the power transmission and reception system 10 includes a vehicle 100 and a power transmission device 200 . Vehicle 100 includes power reception unit 110 and communication unit 160 .
[0061] Power reception unit 110 is provided on the underside of the vehicle body and configured to receive electric power transmitted from power transmission unit 220 of power transmission device 200 in a non-contact manner. Specifically, power receiving unit 110 includes a self-resonant coil (also referred to as a resonant coil) to be described later, and resonate...
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A non-contact electric power reception device receives in a non-contact manner, electric power transferred from an electric power transmission device (200). The electric power transmission device includes an electric power transmission portion (220) and a power supply portion (250) supplying AC power to the electric power transmission portion. The non-contact electric power reception device includes an electric power reception portion (110) receiving electric power in a non-contact manner from the electric power transmission portion and an electric load device (190, 120) using electric power received by the electric power reception portion. The electric power reception portion is configured such that best transmission efficiency at a power supply frequency of the power supply portion used for non-contact electric power transmission is achieved when the electric power reception portion is arranged with its position being displaced from a position of the electric power transmission portion. Preferably, the electric power reception portion is configured such that a peak frequency at which transmission efficiency at the time of change in power transmission frequency exhibits a peak and a power supply frequency match with each other when the electric power reception portion is arranged with positions in a horizontal direction of a central axis of the electric power reception portion and a central axis of the electric power transmission portion being displaced from each other.
Description
technical field [0001] The invention relates to a non-contact power receiving device, a non-contact power transmission device and a non-contact power transmission and power receiving system. Background technique [0002] In recent years, energy transmission using a magnetic field resonance method has attracted attention as a technology capable of transmitting electric energy in a non-contact manner. It is known that the magnetic resonance method can transmit power even when the distance between the power transmitting unit and the power receiving unit is larger than that of the electromagnetic induction method. [0003] However, in the magnetic resonance method, there is an optimum distance, and if the distance is too short, the transmission efficiency will decrease. Japanese Patent Laid-Open No. 2011-50140 (Patent Document 1) discloses a technique in which, in the case of carrying out transmission and reception of electric power in a non-contact manner using a resonance met...
Claims
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Login to View More IPC IPC(8): H02J17/00B60L50/16
CPCH02J7/025Y02T10/7022B60L11/1846Y02T90/14Y02T10/7241H02J7/0004B60L7/14Y02T10/7005B60L11/005B60L2240/549B60L2210/10Y02T90/122B60L11/1861B60L2240/423Y02T90/125B60L11/182H02J5/005B60L2210/40Y02T90/127B60L11/1824B60L15/2009B60L2240/547B60L11/1833Y02T90/12H01F38/14B60L11/14Y02T10/7077B60L2210/30Y02T10/642Y02T10/7088B60L2220/14Y02T10/70Y04S30/14Y02T10/7072B60L50/40B60L50/16B60L53/38B60L53/36B60L53/65B60L58/12H02J7/00036B60L53/126H02J50/90H02J7/00047Y02T10/64Y02T10/72Y02T90/167H02J50/12Y02T90/16
Inventor 市川真士堀内学
Owner TOYOTA JIDOSHA KK