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transformer

A technology of transformer and winding frame, applied in the direction of transformer/inductor magnetic core, transformer/inductor parts, transformer/inductor coil/winding/connection, etc. To achieve the effect of ensuring heat dissipation performance

Active Publication Date: 2018-10-12
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since the transformer 10 is placed in the casing 17 and filled with heat dissipation resin, in order to transmit the heat generated by the winding to the heat dissipation member (in the lower part) through the heat dissipation resin part 18 Image 6 (not shown in the figure) heat dissipation to ensure heat dissipation requires a large amount of heat dissipation resin, so that the transformer 10 becomes heavier and more expensive

Method used

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Embodiment Construction

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0025] Such as figure 1 As shown, the transformer 20 according to the embodiment of the present invention has an inner winding frame 21 , an outer winding frame 22 , a pair of covers 23 , and a pair of magnetic cores 24 . The winding frame portion 40 is constituted by the inner bobbin 21 , the outer bobbin 22 , and the pair of covers 23 .

[0026] And, if figure 2 As shown, the inner bobbin 21 includes an inner bobbin winding portion 21a, upper and lower inner bobbin flange portions 21b, and an inner bobbin hollow tube portion 21c, and each part is integrally manufactured by injection molding or the like. The inner bobbin winding portion 21a is disposed on the outer periphery of the inner bobbin hollow tube portion 21c. The upper and lower inner bobbin flange portions 21b are arranged on the upper end and lower end of the inner bobbin hollow tube portion 21c, respe...

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Abstract

The invention provides a transformer which ensures heat dispersion, light weight and low cost. An inner side winding frame (21) formed by resin containing a heat radiating filler, and a cover (23) are configured in a manner of clamping an outer side winding frame (22) which is formed by resin not containing the heat radiating filler. The upper surface of the outer side winding frame which is formed by the resin not containing the heat radiating filler is connected with the cover, and the lower surface is connected with the inner side winding frame which is formed by resin containing the heat radiating filler. The inner side winding frame and the lower surface of the cover are reliably connected with a heat radiating component (28). According to the transformer (20), heat generated by a winding portion (43) of the transformer is efficiently radiated. Provided is a transformer which can ensure heat dispersion, light weight and low cost without filling heat radiating resin from a bottom surface to certain height.

Description

technical field [0001] The invention relates to a transformer with high heat dissipation performance, in particular to a heat dissipation structure of the transformer. Background technique [0002] The transformer is used as a DC voltage conversion circuit, that is, the main part of an isolated DC-DC converter, which converts the voltage input to the primary winding side to another value on the secondary winding side according to the turns ratio of the primary winding and the secondary winding function of the voltage. [0003] Figure 6 The conventional transformer described in Patent Document 1 is shown. exist Figure 6 Among them, the conventional transformer 10 has a pair of magnetic cores 14 , an inner winding frame 11 , an outer winding frame 12 , a cover 13 , a case 17 , and a heat radiation resin portion 18 . The transformer 10 is manufactured by winding an inner winding 15 on an inner former 11 and an outer winding 16 on an outer former 12, as Figure 6 As shown, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/30H01F27/24
CPCH01F27/24H01F27/306
Inventor 加藤桂史前出正人小岛俊之五闲学
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD