Unlock instant, AI-driven research and patent intelligence for your innovation.

Winding body and method for manufacturing winding body, and coil component

A technology for coil components and manufacturing methods, applied in transformer/inductor parts, coil manufacturing, inductance/transformer/magnet manufacturing, etc., can solve problems such as cracks and structural defects, and achieve the effect of suppressing cracks and reducing compressive stress

Pending Publication Date: 2021-10-22
MURATA MFG CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the figure, as shown in part a, the conductor of the inner part of the bent portion 116 protrudes in the width direction from the gap between the conductor part 113a and the conductor part 113b, and therefore, the conductors of the flat coil body may be caused to contact each other. short circuit
[0021] In addition, compressive stress is applied to each conductor portion 113a, 113b, . Structural defects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Winding body and method for manufacturing winding body, and coil component
  • Winding body and method for manufacturing winding body, and coil component
  • Winding body and method for manufacturing winding body, and coil component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0140] A Cu thin strip with a thickness of 0.3 mm and a width of 10 mm was prepared, and an example sample and a comparative example sample were produced, and workability was confirmed.

[0141] (Example sample)

[0142] Figure 13 ~ Figure 15 In , the processing procedure of the bending process was photographed with an optical microscope about the Cu ribbon of the example sample in which the notch part was formed.

[0143] First, if Figure 13 As shown, the bending portion 52 of the Cu ribbon 51 is etched to form a U-shaped notch portion 53 . In addition, the depth Dt of the notch 53 is about 3 / 4 (about 0.23 mm) of the thickness T of the Cu ribbon 51 .

[0144] Next, if Figure 14 As shown, if the Cu thin strip 51 is folded and folded through the bending portion 52, and further bent, as Figure 15 As shown, the notch 53 forms a hollow recess 54 . Also, the inner portion of the bent portion 52 is accommodated in the recessed portion 54 without protruding to the outside o...

Embodiment 2

[0157] Using magnetic field analysis software, the thickness T of the Cu thin strip (continuous thin strip) is 0.2mm, 0.33mm, and 0.5mm respectively, and under the condition that the driving frequency f of the coil component is 200kHz, the effective value is 28A ( Peak value: 80A) AC current is energized in the Cu thin strip, and the relationship between the Cu thin strip and the conductor loss at this time is simulated.

[0158] Figure 24 is the simulation result thereof, and shows the relationship between the thickness of the Cu ribbon and the conductor loss. In the figure, the horizontal axis represents the thickness (mm) of the Cu ribbon, and the vertical axis represents the conductor loss (W).

[0159] as from the Figure 24 As can be seen, when the thickness of the Cu ribbon is 0.3 mm or less, the conductor loss decreases rapidly.

[0160] On the other hand, the skin depth d of the Cu ribbon can be calculated by the formula (1) described in [Detailed Description of Emb...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
electrical resistivityaaaaaaaaaa
Login to View More

Abstract

The occurrence of structural defects such as cracks can be suppressed while avoiding the case of short-circuiting due to contact between conductors. The continuous ribbon is bent at a bent portion (6a) and wound in a spiral shape. A cutout portion is formed at the bent portion (6a), and the conductor portion (5b) and the conductor portion (5a) are bent so as to overlap at the bent portion (6a), whereby the cutout portion forms a recessed portion (10) having a space larger than a gap (delta) between the conductor portion (5b) and the conductor portion (5a), and the conductor portion inside the bent portion (6a) is accommodated in the recessed portion (10). It is preferable that the thickness of the continuous ribbon is twice or less of the skin depth (d) with respect to the drive frequency (f) of the coil component.

Description

technical field [0001] The present invention relates to a winding body, a method for manufacturing a winding body, and a coil component. A winding body for a coil component, a method for producing the same, and a coil component such as a reactor using the winding body. Background technique [0002] In recent years, coil components are mounted on various electronic devices, and are widely used as main components of high-frequency transformers and vehicle inverters, for example. Furthermore, conventionally, research and development have been actively carried out on coil conductors incorporated in coil components. [0003] For example, Patent Document 1 proposes a high-frequency transformer having a coil of a longitudinal winding structure wound helically around a central column of a core. [0004] In Patent Document 1, there are electromagnetically coupled primary side coils and secondary side coils, and each of the primary side coils and secondary side coils is formed of a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/08H01F27/34H01F41/061
CPCH01F27/2871H01F27/2847H01F27/2876H01F27/08H01F27/34H01F41/061H01F2027/2857H01F2027/2861H01F41/04H01F27/323H01F27/2823H01F41/063H01F27/24
Inventor 篠原刚太牧谦一郎
Owner MURATA MFG CO LTD