Transformer helix winding production

Patent metadata

Field	Value
Publication number	US-11657963-B2
Application number	US-202117466452-A
Country	US
Kind code	B2
Filing date	Sep 3, 2021
Priority date	Sep 15, 2020
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

Methods and apparatus for producing helix windings used for a transformer are provided. For example, apparatus comprise an electrically conductive mandrel comprising an elongated body, a head comprising an eyelet detail, and a winding structure disposed along the elongated body.

First claim

What is claimed is:

1. An apparatus for producing helix windings used for a transformer, comprising:
an electrically conductive mandrel comprising:
an elongated body;
a head comprising an eyelet detail; and
a winding structure disposed along the elongated body,
wherein the elongated body, the head, and a portion of the winding structure that is not to be electroplated are covered in an insulating material, and
wherein the eyelet detail is surrounded by the insulating material but is not covered by the insulating material.

2. The apparatus of claim 1 , wherein the insulating material is an epoxy paint.

3. The apparatus of claim 1 , wherein the portion of the winding structure that is to be electroplated comprises a top surface and a bottom surface of the winding structure.

4. The apparatus of claim 1 , wherein the electrically conductive mandrel is formed from titanium.

5. The apparatus of claim 1 , wherein the winding structure comprises two three-turn winding structures and a six-turn winding structure.

6. The apparatus of claim 1 , wherein the winding structure comprises a top surface and a bottom surface that are configured to be electroplated when the electrically conductive mandrel is disposed in an electrolyte solution for electro-deposition of high-purity copper.

7. The apparatus of claim 6 , wherein the electrolyte solution comprises at least one of copper sulfate, copper cyanide, of copper acetate.

8. The apparatus of claim 6 wherein the eyelet detail is configured to connect to a negative terminal of an electroplating power supply when the electrically conductive mandrel is disposed in the electrolyte solution for electro-deposition of high-purity copper.

Assignees

• Enphase Energy Inc

Inventors

• Harrison Michael J

Classifications

• H01F41/042 Primary

  by thin film techniques · CPC title

• C25D1/00

  Electroforming · CPC title

• H01F41/098 Primary

  Mandrels; Formers · CPC title

• C25D7/0614

  Strips or foils · CPC title

• C25D17/00

  Constructional parts, or assemblies thereof, of cells for electrolytic coating · CPC title