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Resonance-type non-contact power supply system

A power supply system, non-contact technology, applied in the direction of electromagnetic wave system, circuit, charging station, etc., can solve the problem of not considering the load change of the power receiving side, and achieve the effect of easy manufacturing

Inactive Publication Date: 2014-02-26
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The device of Patent Document 2 does not consider the load variation on the power receiving side

Method used

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  • Resonance-type non-contact power supply system
  • Resonance-type non-contact power supply system
  • Resonance-type non-contact power supply system

Examples

Experimental program
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no. 1 Embodiment approach ）

[0024] Below, refer to Figure 1 ~ Figure 4 A first embodiment in which the present invention is embodied as a resonance type non-contact charging system for charging an on-vehicle battery will be described.

[0025] Such as figure 1 As shown, the resonance-type contactless charging system as a resonance-type contactless power supply system is composed of a power supply device 10 installed on the ground side and a power receiving device 30 mounted on a vehicle as a mobile body.

[0026] The power supply device 10 includes a high-frequency power supply 11 as a power supply unit, a matching unit 12 connected to an output unit of the high-frequency power supply 11 , a primary coil 13 , an impedance measurement unit (impedance measurement unit) 14 , and a power supply-side controller 15 . As the impedance measuring means 14, a power measuring device and a phase measuring device are used.

[0027] The power receiving device includes a secondary coil 31 , a rectifier 32 , a charge...

no. 2 Embodiment approach ）

[0057] Next, refer to Figure 5 ~ Figure 7 A second embodiment of the present invention will be described. This embodiment differs from the above-described first embodiment in that the number of coils constituting the resonance system is one in both the power feeding device 10 and the power receiving device 30 . Parts that are the same as those in the first embodiment are given the same reference numerals, and detailed description thereof will be omitted.

[0058] Such as Figure 5 As shown, the primary-side resonant coil 13b is connected to the high-frequency power supply 11 via the matching unit 12 . The secondary side resonance coil 31b is connected to the rectifier 32 . That is, the primary side coil 13 does not include the primary coil 13a as the induction coil, but only the primary side resonant coil 13b, and the secondary side coil 31 does not include the secondary coil 31a as the induction coil, but only the secondary side resonant coil 31b. .

[0059] In this emb...

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PUM

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Abstract

A resonance-type non-contact power supply system is configured such that a power supply unit can alter the output frequency, and has an impedance measurement means (impedance measurement unit) that measures the input impedance of a resonance system. The system also has a control means that performs control such that official power supply to power receiving equipment occurs after the output frequency (fo) of the power supply unit is changed so as to be within a range among ranges of frequency f1<=fo<=frequency f2, frequency f3<=fo<= frequency f4, ..., frequency f[2n-1]<=fo=<f[2n]. Frequencies f1, f2, f3, f4, ..., f[2n-1], f[2n] (f1<f2<f3<...<f[2n-1]<f[2n]) are frequencies such that Z1=Z2, Z3=Z4, ..., Z[2n-1]=Z[2n] when the input impedance for the resonance system when power of said frequency is supplied to the resonance system is Z1, Z2, Z3, ..., Z[2n-1], Z[2n].

Description

technical field [0001] The present invention relates to a resonance type non-contact power supply system. Background technique [0002] Conventionally, a method of transmitting electric power using magnetic field resonance has been proposed (for example, refer to Patent Document 1). However, Patent Document 1 does not disclose a specific method of determining the resonance frequency of a resonance system that performs magnetic resonance. Therefore, it is difficult to design and manufacture a resonance type non-contact power supply system that efficiently transmits electric power. Therefore, a non-contact power transmission device that is easy to design and manufacture has been proposed (for example, refer to Patent Document 2). In the non-contact power transmission device of Patent Document 2, when the relationship between the input impedance and the frequency of the resonant system is shown in a graph, the frequency at which the input impedance becomes maximum, and the fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00B60L5/00B60L11/18B60M7/00H01M10/46H02J7/00B60K1/04
CPCY02E60/12H02J7/025B60L11/182H01M10/46Y02T90/122H02J5/005Y02T10/7088Y02T10/7005H02J17/00Y02T90/14Y02T10/7072H02J50/12B60L53/122B60L53/126H02J7/00034H02J7/00712Y02T10/70Y02E60/10H02J50/80Y02T90/12
Inventor 田口雄一山口敦
Owner TOYOTA IND CORP