CN-115606042-B - Lead wire component

CN115606042BCN 115606042 BCN115606042 BCN 115606042BCN-115606042-B

Abstract

A lead member includes a lead conductor having a first main surface and a second main surface on the opposite side of the first main surface, and a resin portion that covers the first main surface, the second main surface, and both side surfaces between both end portions of the lead conductor while both end portions in a first direction of the lead conductor are exposed, wherein the lead conductor includes a metal base material and a colored layer formed on at least a part of the surface of the metal base material, wherein the regular reflectance of the colored layer is 0.3 or less when the total reflectance of barium sulfate is defined as 1.0 in the entire wavelength band of 220nm to 850 nm.

Inventors

TSUMURA TAKASHI
SAITO KENGO
Twilight stone youyou
INASAWA SHINJI

Assignees

住友电气工业株式会社

Dates

Publication Date: 20260508
Application Date: 20200610

Claims (13)

1. A lead component, comprising: A lead conductor having a first major surface and a second major surface on an opposite side of the first major surface, and A resin portion that exposes both end portions of the lead conductor in a first direction and covers the first main surface, the second main surface, and both side surfaces between the both end portions of the lead conductor, Wherein the lead conductor comprises Metal substrate, and A colored layer formed on at least a part of the surface of the metal base material, Wherein the regular reflectance of the colored layer is 0.3 or less when the total reflectance of barium sulfate is defined as 1.0 in the entire wavelength band of 220nm to 850 nm.
2. The lead component of claim 1, wherein the metal substrate comprises aluminum, an aluminum alloy, nickel, a nickel alloy, copper, a copper alloy, nickel plated aluminum alloy, nickel plated copper alloy, nickel clad aluminum alloy, nickel clad copper, or nickel clad copper alloy.
3. The lead member according to claim 2, Wherein the metal substrate is made of aluminum or an aluminum alloy, and Wherein the colored layer comprises a black anodic oxide coating.
4. The lead member according to claim 3, wherein the black anodic oxide coating has an regular reflectance of 0.2 or less when the total reflectance of the barium sulfate is defined as 1.0 in the entire band of 220nm or more and 850nm or less.
5. The lead member according to claim 2, Wherein the metal substrate is made of nickel-plated aluminum, nickel-plated aluminum alloy, nickel-plated copper or nickel-plated copper alloy, and Wherein the coloring layer comprises a black nickel plating layer, wherein an arithmetic average curvature Spc of a peak top point of the black nickel plating layer measured according to ISO 25178 is 5000mm -1 or more.
6. The lead member according to claim 5, wherein the positive reflectance of the black nickel plating layer is 0.2 or less when the total reflectance of the barium sulfate is defined as 1.0 in the entire band of 220nm to 850 nm.
7. The lead member according to claim 2, Wherein the metal substrate is made of nickel, nickel alloy, nickel plated aluminum alloy, nickel plated copper alloy, nickel clad aluminum alloy, nickel clad copper or nickel clad copper alloy, and Wherein the colored layer comprises a black chrome plating.
8. The lead member according to claim 7, wherein the black chromium plating layer has an regular reflectance of 0.2 or less when the total reflectance of the barium sulfate is defined as 1.0 in an entire wavelength band of 220nm or more and 850nm or less.
9. The lead member according to any one of claims 1 to 8, wherein the coloring layer is provided at least between the metal base material and the resin portion.
10. The lead member according to any one of claims 1 to 9, wherein the colored layer is provided on all of the first main surface and the second main surface.
11. The lead member according to any one of claims 1 to 10, wherein the resin portion comprises polypropylene.
12. A lead component, comprising: A lead conductor having a first major surface and a second major surface on an opposite side of the first major surface, and A resin portion including polypropylene, the resin portion exposing both end portions of the lead conductor in a first direction and covering the first main surface, the second main surface, and both side surfaces between the both end portions of the lead conductor, Wherein the lead conductor comprises A metal substrate made of aluminum or an aluminum alloy, and A colored layer formed on a surface of the metal substrate, the colored layer including a black anodic oxide coating, Wherein the black anodic oxide coating has a regular reflectance of 0.2 or less in the entire wavelength band of 220nm or more and 850nm or less when the total reflectance of barium sulfate is defined as 1.0, and Wherein the colored layer is disposed on all of the first major surface and the second major surface.
13. A lead component, comprising: A lead conductor having a first major surface and a second major surface on an opposite side of the first major surface, and A resin portion including polypropylene, the resin portion exposing both end portions of the lead conductor in a first direction and covering the first main surface, the second main surface, and both side surfaces between the both end portions of the lead conductor, Wherein the lead member comprises A metal substrate made of nickel-plated aluminum, nickel-plated aluminum alloy, nickel-plated copper or nickel-plated copper alloy, and A colored layer formed on a surface of the metal base material, the colored layer including a black nickel plating layer, wherein an arithmetic average curvature Spc of peak top points of the black nickel plating layer measured according to ISO 25178 is 5000mm -1 or more, Wherein the black nickel plating layer has a regular reflectance of 0.2 or less in the entire wavelength band of 220nm to 850nm when the total reflectance of barium sulfate is defined as 1.0, and Wherein the colored layer is disposed on all of the first major surface and the second major surface.

Description

Lead wire component Technical Field The present disclosure relates to a lead component. Background A nonaqueous electrolyte battery such as a lithium ion battery has a structure in which a positive electrode, a negative electrode, and an electrolyte are contained in a package body made of a laminate film, and lead members (sheet-shaped leads) connected to the positive electrode and the negative electrode are sealed and taken out. The lead member is constituted by welding a multilayer sealing film made of a resin film such as polypropylene (PP) from both surfaces to regions other than both ends in the longitudinal direction of an aluminum lead conductor for positive electrode or a nickel or nickel-plated copper lead conductor for negative electrode. Patent document 1 discloses a sheet-like lead continuum in which a colored tape is attached to an insulating film at a defective position. [ Prior Art literature ] [ Patent literature ] [ Patent document 1] Japanese patent laid-open publication No.2010-218752 Disclosure of Invention According to the present disclosure, a lead member includes a lead conductor having a first main surface and a second main surface on an opposite side of the first main surface, and a resin portion that covers the first main surface, the second main surface, and both side surfaces between both end portions of the lead conductor while exposing both end portions of the lead conductor in a first direction. The lead conductor includes a metal base material, and a coloring layer formed on at least a portion of a surface of the metal base material. When the total reflectance of barium sulfate is defined as 1.0 in the entire wavelength band of 220nm to 850nm, the regular reflectance of the colored layer is 0.3 or less. Drawings Fig. 1 is a plan view showing a lead member according to a first embodiment; Fig. 2 is a sectional view (part 1) showing a lead member according to a first embodiment; Fig. 3 is a sectional view (part 2) showing a lead member according to a first embodiment; FIG. 4 is a schematic diagram showing a black nickel plating layer; fig. 5 is a plan view (part 1) showing a method of manufacturing a lead member according to the first embodiment; fig. 6 is a plan view (part 2) showing a method of manufacturing a lead member according to the first embodiment; fig. 7 is a plan view (part 3) showing a method of manufacturing a lead member according to the first embodiment; fig. 8 is a plan view (part 4) showing a method of manufacturing a lead member according to the first embodiment; fig. 9 is a plan view showing a lead member according to a second embodiment, and Fig. 10 is a sectional view showing a lead member according to a second embodiment. Detailed Description [ Problem to be solved by the present disclosure ] According to the technique disclosed in patent document 1, although the intended purpose is achieved, it is difficult to visually find defects occurring on the lead conductors. [ Effect of the present disclosure ] According to the present disclosure, defects occurring on the lead conductors are easily visually found. Embodiments for implementation will be described below. [ Description of embodiments of the disclosure ] First, aspects of the present disclosure are listed and described below. In the following description, the same reference numerals are used for the same or corresponding elements, and the same description thereof will not be repeated. According to one aspect of the present disclosure, a lead member includes a lead conductor having a first main surface and a second main surface on an opposite side of the first main surface, and a resin portion that covers the first main surface, the second main surface, and both side surfaces between both end portions of the lead conductor while exposing both end portions of the lead conductor in a first direction, wherein the lead conductor includes a metal base material, and a colored layer formed on at least a part of a surface of the metal base material, wherein in an entire band of 220nm to 850nm, when a total reflectance of barium sulfate is defined as 1.0, a regular reflectance of the colored layer is 0.3 or less. In the lead member according to one aspect of the present disclosure, when the total reflectance of barium sulfate is defined as 1.0, a colored layer having a regular reflectance of 0.3 or less is formed on the surface of the metal base material of the lead conductor. Therefore, when a defect is formed on the colored layer, the defect is easily visually found. <2> According to <1>, the metal substrate may comprise aluminum, aluminum alloy, nickel alloy, copper alloy, nickel-plated aluminum alloy, nickel-clad aluminum alloy, nickel-plated copper alloy, nickel-clad copper, or nickel-clad copper alloy. In this case, a lead conductor having good conductivity is easily obtained. <3> According to <2>, the metal substrate may be made of aluminum or an aluminum alloy, and the coloring layer may include a black