Copper-aluminum composite material embedded with plurality of narrow copper strips

Abstract

The utility model aims to provide a copper-aluminum composite material embedded with a plurality of narrow copper strips, which relates to the technical field of copper-aluminum compositing, and comprises an aluminum substrate and a plurality of narrow copper strips embedded in the aluminum substrate, and the plurality of narrow copper strips are parallel to one another; the first surfaces of the narrow copper strips are flush with the first surface of the aluminum substrate, and the second surfaces of the narrow copper strips are embedded into the aluminum substrate. Through the technical scheme, the composite material has the technical effects that (1) the composite material consists of the aluminum substrate and the plurality of narrow copper strips embedded into the aluminum substrate, the combination surfaces of the copper strips and the aluminum substrate are increased, the composite strength is increased, and the service life of the composite material is prolonged; cutting or stamping is easy; and (2) the conductivity of copper is superior to that of aluminum, and the aluminum is light in weight and low in cost. By embedding the narrow copper strip, the conductivity of the material is improved under the condition that the weight is not obviously increased; and (3) the connection problems of welding, lapping, riveting and the like of the copper-aluminum adapter in an electric power system and a circuit are solved, the stable connection of the adapter is realized, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of copper-aluminum composites, in particular to a copper-aluminum composite material embedded with a plurality of narrow copper strips. Background Art

[0002] In the fields of new energy vehicle battery systems, aerospace, high-speed trains, etc., conductor materials are required to have good conductivity, be lightweight and corrosion-resistant. Copper-aluminum composite materials are one of the good choices.

[0003] At present, copper-aluminum composite materials are copper strips and aluminum strips that are composited face to face. They have defects such as insufficient bonding strength and a relatively large proportion of copper strips. There is still room for improvement in terms of lightweight and bonding strength.

[0004] In view of this, it is necessary to develop a copper-aluminum composite material embedded with several narrow copper strips to overcome the above defects. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a copper-aluminum composite material embedded with a plurality of narrow copper strips, wherein a plurality of parallel narrow copper strips are embedded on an aluminum substrate as a basis, and then the copper-aluminum composite material is cut or punched into a predetermined size, thereby greatly improving the processing efficiency of the copper-aluminum composite material.

[0006] In order to achieve the above-mentioned inventive object of the utility model, a copper-aluminum composite material embedded with a plurality of narrow copper strips is provided, comprising an aluminum substrate and a plurality of narrow copper strips embedded in the aluminum substrate, wherein the plurality of narrow copper strips are parallel to each other;

[0007] The first surface of the narrow copper strip is flush with the first surface of the aluminum substrate, and the second surface of the narrow copper strip is embedded in the aluminum substrate.

[0008] Preferably, the thickness of the aluminum substrate is 5 mm-14 mm.

[0009] Preferably, the thickness of the narrow copper strip is 1 mm-3.5 mm.

[0010] Preferably, the width of the aluminum substrate is 500 mm-1400 mm.

[0011] Preferably, the width of a single narrow copper strip is 5 mm-60 mm.

[0012] Preferably, the widths of the plurality of narrow copper strips are the same or different.

[0013] Preferably, the spacing between adjacent narrow copper strips is 10 mm-50 mm.

[0014] Preferably, the cross-section of the narrow copper strip is rectangular.

[0015] Preferably, the number of the narrow copper strips is 3-20.

[0016] Preferably, the narrow copper strip and the aluminum substrate are interfacially bonded.

[0017] Through the above technical solution, the technical effects achieved are as follows:

[0018] (1) The composite material is composed of an aluminum substrate and a plurality of narrow copper strips embedded therein. The bonding surface between the copper strips and the aluminum substrate is increased, the composite strength is increased, and at the same time, the composite material is made uniform as a whole; the first surface of the narrow copper strip is flush with the first surface of the aluminum substrate, and the first surface of the narrow copper strip is exposed, which is convenient for use as a composite conductor material and easy to cut or punch.

[0019] (2) Copper has better electrical conductivity than aluminum, while aluminum is light and low in cost. By embedding narrow copper strips, the electrical conductivity of the material can be improved without significantly increasing the weight. The composite material of the utility model can be widely used in fields that require lightweight and high electrical conductivity, such as power transmission, electronic equipment, and automobile manufacturing, especially in the fields of new energy vehicle battery systems, aerospace, high-speed trains, etc. This material can provide a lightweight solution while ensuring the electrical conductivity and brazing performance requirements.

[0020] (3) It solves the connection problems of copper-aluminum adapter welding, overlapping and riveting in power systems and circuits, realizes the stable connection of the adapter and improves its service life, thus greatly reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a top view of a copper-aluminum composite material having a plurality of narrow copper strips of the same width according to the utility model.

[0023] Figure 2 It is a top view of a copper-aluminum composite material of the utility model having a plurality of narrow copper strips with different widths.

[0024] Figure 3 It is a cross-sectional view of the copper-aluminum composite material of the utility model.

[0025] Among them, 1, aluminum substrate; 11, first surface; 2, narrow copper strip; 21, first surface; 22, second surface. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described in detail below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Example 1

[0029] A copper-aluminum composite material with several narrow copper strips embedded in it, see Figures 1 to 3 , including an aluminum substrate 1 and a plurality of narrow copper strips 2 embedded in the aluminum substrate 1, wherein the plurality of narrow copper strips 2 are parallel to each other; a first surface 21 of the narrow copper strip 2 is flush with a first surface 11 of the aluminum substrate 1, and a second surface 22 of the narrow copper strip 2 is embedded in the aluminum substrate 1.

[0030] Specifically, see Figures 1 to 3 The width of the aluminum substrate 1 is 500mm-1400mm, preferably 800mm, the thickness of the aluminum substrate 1 is 5mm-14mm, preferably 6mm, the width of a single narrow copper strip 2 is 5mm-60mm, preferably 15mm, the thickness of the narrow copper strip 2 is 1mm-3.5mm; preferably 1.5mm, the widths of several narrow copper strips 2 are the same or different, Figure 1 It is a top view of several narrow copper strips 2 with the same width. Figure 2 It is a top view of several narrow copper strips 2 with different widths. Figure 3It is a cross-sectional view of a copper-aluminum composite material, in which a plurality of narrow copper strips 2 are embedded on the surface of an aluminum substrate 1 with a width of 500mm-1400mm, the spacing between adjacent narrow copper strips is 10mm-50mm, preferably 20mm, the number of narrow copper strips is 3-20, and after rolling, the first surface 21 of the narrow copper strip 2 is flush with the first surface 11 of the aluminum substrate 1, and the second surface 22 of the narrow copper strip 2 is embedded in the aluminum substrate 1. The narrow copper strip 2 and the aluminum substrate 1 are interfacially composited, the cross section of the narrow copper strip 2 is rectangular, and the composite surface includes two side surfaces of the narrow copper strip 2 in addition to the second surface 22, which increases the bonding area between the narrow copper strip 2 and the aluminum substrate 1, increases the bonding strength, and provides a strength basis for subsequent cutting, stamping, and brazing.

[0031] Through the above technical solution, the technical effects achieved by Example 1 are as follows:

[0032] (1) The composite material is composed of an aluminum substrate 1 and a plurality of narrow copper strips 2 embedded therein, the bonding surface between the narrow copper strips 2 and the aluminum substrate 1 is increased, the composite strength is increased, and at the same time, the composite material is uniform as a whole; the first surface 21 of the narrow copper strips 2 is flush with the first surface 11 of the aluminum substrate 1, and the first surface 21 of the narrow copper strips 2 is exposed, which is convenient for use as a composite conductor material and easy to cut or punch; taking the preparation of battery negative poles as an example, when cutting or punching, a plurality of copper-aluminum composite negative poles with aluminum as the base material can be cut or punched out at one time on the basis of the entire aluminum substrate 1, which greatly improves the production efficiency of the negative poles; taking a long copper-aluminum composite material as an example, cutting can be performed in the gap between adjacent narrow copper strips 2, and a plurality of copper-aluminum composite materials can be cut out at one time, which greatly improves the production efficiency of the long copper-aluminum composite material.

[0033] (2) Copper has better electrical conductivity than aluminum, while aluminum is light and low in cost. By embedding narrow copper strips, the electrical conductivity of the material can be improved without significantly increasing the weight. The composite material of this embodiment can be widely used in fields that require lightweight and high electrical conductivity, such as power transmission, electronic equipment, and automobile manufacturing, especially in the fields of new energy vehicle battery systems, aerospace, and high-speed trains. This material can provide a lightweight solution while ensuring the electrical conductivity and brazing performance requirements.

[0034] (3) It solves the connection problems of copper-aluminum adapter welding, overlapping and riveting in power systems and circuits, realizes the stable connection of the adapter and improves its service life, thus greatly reducing costs.

Claims

1. A copper-aluminum composite material embedded with a plurality of narrow copper strips, characterized in that: It comprises an aluminum substrate and a plurality of narrow copper strips embedded in the aluminum substrate, wherein the plurality of narrow copper strips are parallel to each other; The first surface of the narrow copper strip is flush with the first surface of the aluminum substrate, and the second surface of the narrow copper strip is embedded in the aluminum substrate.

2. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 1, characterized in that: The thickness of the aluminum substrate is 5 mm to 14 mm.

3. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 1, characterized in that: The thickness of the narrow copper strip is 1 mm to 3.5 mm.

4. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in any one of claims 1 to 3, characterized in that: The width of the aluminum substrate is 500 mm-1400 mm.

5. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 4, characterized in that: The width of a single narrow copper strip is 5 mm to 60 mm.

6. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 4, characterized in that: The widths of the plurality of narrow copper strips are the same or different.

7. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 4, characterized in that: The spacing between adjacent narrow copper strips is 10 mm to 50 mm.

8. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 4, characterized in that: The cross section of the narrow copper strip is rectangular.

9. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 4, characterized in that: The number of the narrow copper strips is 3 to 20.

10. The copper-aluminum composite material embedded with a plurality of narrow copper strips as claimed in claim 4, characterized in that: The narrow copper strip and the aluminum substrate are interfacially bonded.

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