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Coil device

A coil device and coil technology, applied in the direction of transformer/inductor coil/winding/connection, electrical components, transformer/inductor parts, etc., can solve the problems of unstable leakage characteristics and low coil coupling, and achieve helpful Stabilization, prevention of unevenness in the number of windings, and stabilization

Active Publication Date: 2018-06-29
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the coil device shown in Patent Document 1, it has been found that the primary coil and the secondary coil are arranged adjacent to each other in the direction of the winding axis, and the coupling between these coils tends to change, for example, when their turn ratios are different. Low, sometimes unstable leakage characteristics

Method used

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Examples

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Embodiment Construction

[0097] Hereinafter, the present invention will be described based on the embodiments shown in the drawings.

[0098] as figure 1 The shown transformer 10 of the coil device according to the present embodiment is used for, for example, an EV (Electric Vehicle: electric transmission equipment), a PHV (Plug-in Hybrid Vehicle: plug-in hybrid electric vehicle), or a vehicle for commuting (vehicles). A charger or the like is used to constitute a part of an LLC circuit, for example.

[0099] like figure 2 As shown, the transformer 10 has a frame 20 , magnetic cores 40 a and 40 b , a cover 50 , a lead winding cover 60 , a base 70 , a housing 90 for accommodating them, and a bottom plate 92 . In addition, in the drawings, the X-axis, Y-axis and Z-axis are perpendicular to each other, and the Z-axis corresponds to the height (thickness) of the transformer 10 . In the present embodiment, the lower side of the transformer 10 in the Z-axis direction serves as a transformer installation...

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PUM

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Abstract

The present invention provides a coil device having a stable leakage characteristic. A transformer (10) has a skeleton (20) and a coil (300) mounted to the outer circumference of the skeleton (20). The coil (300) has a first coil portion (301) and a second coil portion (302) along the winding axis of the coil (300), and an intermediate coil portion (303) between the first coil portion (301) and the second coil portion (302). The intermediate coil portion (303) is constituted by an intermediate wound wire (37), and the first coil portion (301) and the second coil portion (302) are formed by a acommon wound wire (38) for forming the first coil portion (301) and the second coil portion (302).

Description

technical field [0001] The present invention relates to a coil device that can be suitably used as a transformer such as a leakage transformer. Background technique [0002] Coil devices are used in various electrical products for various purposes. For example, coil devices can be used in EV (Electric Vehicle: electric transmission equipment), PHV (Plug-in Hybrid Vehicle: plug-in hybrid electric vehicle) or commuter (vehicle) in-vehicle chargers or LLC circuits, etc., and Usually used as transformers such as leakage transformers. [0003] As a coil device, for example, a coil device disclosed in Patent Document 1 described below is known. In the coil device disclosed in Patent Document 1, the adjustment of leakage characteristics is easy, and it is possible to cope with high frequency while achieving a large current. [0004] However, in the coil device shown in Patent Document 1, it has been found that the primary coil and the secondary coil are arranged adjacent to each...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/32
CPCH01F27/28H01F27/2823H01F27/324
Inventor 熊谷胜岩仓正明比嘉晋士
Owner TDK CORPARATION
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