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Coil position detection method for non-contact power supply system, and power reception device

A coil position, power supply system technology, applied in the direction of circuit devices, transportation and packaging, electric vehicle charging technology, etc., to achieve the effect of high-precision positioning

Active Publication Date: 2019-01-04
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention was made to solve such conventional problems, and its object is to provide a coil position detection method and a receiving coil for a non-contact power supply system that can position the receiving coil with high precision without switching the relay during positioning. electrical device

Method used

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  • Coil position detection method for non-contact power supply system, and power reception device
  • Coil position detection method for non-contact power supply system, and power reception device
  • Coil position detection method for non-contact power supply system, and power reception device

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Embodiment Construction

[0023] Embodiments of the present invention will be described below with reference to the drawings.

[0024] [Structure of Contactless Power Supply System]

[0025] figure 1 It is a block diagram showing the configuration of a contactless power supply system employing the coil position detection method according to this embodiment. Such as figure 1 As shown, the contactless power supply system 1 includes a power supply device 100 as a ground-side unit and a power reception device 200 as a vehicle-side unit. This contactless power supply system 1 supplies electric power in a non-contact manner from a power supply device 100 disposed at a power supply post or the like to a power receiving device 200 mounted on a vehicle 10 such as an electric vehicle or a hybrid vehicle to charge a vehicle-mounted storage battery.

[0026] The power supply device 100 includes a power transmission coil 12 arranged in the parking space 2 near the power supply pole. On the other hand, power r...

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Abstract

A coil position detection method for detecting a position of a power reception coil (22) of a non-contact power supply system for supplying electric power from a power transmission coil (12) installedon the ground side to the power reception coil (22) installed on the vehicle side, wherein an output end of a rectification circuit (53) for rectifying an alternating current received by the power reception coil (22) is connected to a drive circuit (50) and to a battery (27). In addition, a relay switch (26) is disposed between the output end of the rectification circuit (53) and the battery (27). With this, when the relay switch (26) is on, the coil position is detected on the basis of an alternating-current voltage detected by a first voltmeter (51) disposed on the front stage of the rectification circuit (53). In addition, when the relay switch (26) is off, the coil position is detected on the basis of a direct-current voltage detected by a second voltmeter (52) disposed on the back stage of the rectification circuit (53).

Description

technical field [0001] The invention relates to a coil position detection method and a power receiving device of a non-contact power supply system. Background technique [0002] In a non-contact power supply system that supplies electric power to a storage battery mounted on an electric vehicle or the like in a non-contact manner, a power transmitting coil installed on the ground is arranged to face a power receiving coil mounted on a vehicle, and the power transmitting coil is excited. to supply power to the receiving coil. In such a non-contact power feeding system, it is necessary to position the power receiving coil so that the power receiving coil and the power transmitting coil face each other, and conventionally, a non-contact power feeding system disclosed in Patent Document 1 is known. [0003] In Patent Document 1, the power transmission coil is excited with a voltage lower than the normal power supply voltage, and the power received by the power reception coil is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/90H02J50/10
CPCH02J50/10H02J50/90B60L53/12B60L53/38Y02T10/70Y02T90/14Y02T10/7072Y02T90/12B60Y2200/91B60L53/126
Inventor 塚本幸纪
Owner NISSAN MOTOR CO LTD
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