TWI645927B - Electroplating welding element and preparation method thereof - Google Patents

Abstract

An electroplating fusion bonding element includes: a first metal member, a second metal member, and a connecting layer, wherein the connecting layer is plated on a surface of the first metal member, and the connecting layer is welded to the second metal member a surface for bonding the first metal member to the second metal member. The method for preparing the electroplating fusion component comprises: plating a connection layer on a surface of a first metal member; heating the connection layer to make the connection layer in a molten state; operating the first metal member to contact a second metal member, The connecting layer in a molten state is welded to the second metal member. Controlling the thickness of the connecting layer attached to the first surface by electroplating, and then attaching the connecting layer to the second metal member by welding to achieve the function of bonding the first metal member and the second metal member .

Description

Electroplating welding element and preparation method thereof

The present invention relates to the incorporation of a bimetal member; in particular, an electroplated fusion splice member comprising a tightly bonded bimetal member and a method of making the same.

Welding, also known as welding, welding, splicing, refers to the process and technique of joining two metals by heating.

The welding can be mainly divided into two ways to achieve the purpose of joining: First, the first metal piece is locally melted by heating one of the first metal pieces to form a molten pool, and the second metal piece is made The surface is in contact with the molten pool, and when the molten pool is cooled and solidified, the first metal member is joined to the second metal member; and second, by separately heating the solder having a lower melting point (hence, also called spot welding) a solder in a molten state is attached to a partial surface of a first metal member, and then a surface of a second metal member is brought into contact with the molten solder. When the solder is cooled and solidified, the first metal member is bonded. On the second metal member.

Since the temperature required for spot welding is lower, and the processing cost required is relatively low, it is widely used. However, spot welding has its disadvantages: since the first metal member and the second metal member are combined by a single or multiple points of solder, the contact area between the first metal member and the second metal member and the solder is small. The first metal member and the second metal member are easily separated.

In order to solve the above problem, a manufacturer attaches a large amount of molten solder between the first metal member and the second metal member to increase the contact area between the solder and the first metal member and the second metal member. Strengthen the combined effect.

However, a connection layer composed of a large amount of solder is not only thick in thickness, but also increases production processing, and there is a problem of uneven thickness. In addition, when the second metal member is sponge-like or has a porous structure on the surface, the thicker the connection layer may increase the risk of separating the first metal member from the second metal member.

In view of the above, an object of the present invention is to provide an electroplating fusion splicing component and a method for preparing the electroplating fusion splicing component, which respectively comprise a tightly bonded bimetal member, and a preparation method for preparing a tightly bonded bimetal member.

In order to achieve the above object, an electroplating fusion bonding element provided by the present invention includes: a first metal member, a second metal member, and a connecting layer, wherein the connecting layer is plated on the first of the first metal member. a surface, and the connecting layer is welded to a second surface of the second metal member to bond the first metal member to the second metal member.

The invention further provides a method for preparing a plating fusion component, the steps comprising: A. preparing a first metal member and a second metal member; B. plating a connecting layer on the first surface of the first metal member; C. heating the connecting layer to make the connecting layer in a molten state; D. operating the first metal member to contact the first surface with a second surface of the second metal member to weld the connecting layer in a molten state to The second surface of the second metal member.

The effect of the invention is to control the thickness of the connecting layer attached to the first surface by electroplating, and then attach the connecting layer to the second surface by welding to achieve bonding the first metal piece and the second The function of metal parts.

〔this invention〕

100‧‧‧Electroplating fusion elements

10‧‧‧First metal parts

12‧‧‧ first surface

20‧‧‧Second metal parts

22‧‧‧ second surface

30‧‧‧Connection layer

40‧‧‧Zinc air fuel cell

41‧‧‧Shell

42‧‧‧Anode conductive sheet

43‧‧‧Anode conductive mesh

44‧‧‧ cushion

45‧‧‧Separator

46‧‧‧Air electrode

47‧‧‧Cathode conductive sheet

48‧‧‧ Cover

49‧‧‧ tin layer

1 is a flow chart of a method for preparing an electroplated fusion splice component according to a preferred embodiment of the present invention.

Figure 2 is a schematic view of an electroplated fusion splicing element prepared by the preparation method of the above preferred embodiment.

Figure 3 is a combined side view of Figure 2.

Figure 4 is an exploded view of a zinc air fuel cell to which the above preferred embodiment is applied.

In order to explain the present invention more clearly, a preferred embodiment will be described in detail with reference to the drawings. Referring to FIG. 1 to FIG. 3, a flow chart of a method for preparing an electroplated fusion splice component 100 according to a preferred embodiment of the present invention, and an electroplated fusion splice component 100 prepared by the preparation method are shown.

The electroplating frit element 100 includes a first metal member 10, a second metal member 20, and a connecting layer 30. The manufacturing method includes the following steps: A. preparing the first metal member 10 and the second metal The connecting layer 30 is electroplated on the first surface 12 of the first metal member 10, wherein the melting point of the plating layer is lower than the melting points of the first metal member 10 and the second metal member 20; Heating the connecting layer 30 to make the connecting layer 30 in a molten state; D. operating the first metal member 10 to contact the first surface 12 with a second surface 22 of the second metal member 20, so that The connecting layer 30 in a molten state is welded to the second surface 22 of the second metal member 20. After the connecting layer 30 is cooled and solidified, the first metal member 10 is bonded to the second metal member 20.

Since the connection layer 30 is bonded to the first surface 12 of the first metal member 10 by electroplating, and then bonded to the second surface 22 of the second metal member 20, the connection layer is Not only can 30 be uniformly attached to the first surface 12, but the thickness of the connection layer 30 can be controlled by controlling parameters of plating, such as applied current, time of plating, and the like. The user can comprehensively consider the quality of the first metal member 10 and the second metal member 20, the surface area of the first surface 12 and the second surface 22, and the like, and adjust the thickness of the connecting layer 30 to control the production and processing. The cost, and at the same time, the combined effect of the first metal member 10 and the second metal member 20.

The electroplating fusing component can be applied to many different fields as needed, and is applied to the zinc air fuel cell 40 as an example. As shown in FIG. 4, the zinc air fuel cell 40 includes a casing 41 and is stacked on the casing 41. An anode conductive sheet 42, an anode conductive mesh 43, a gasket 44, a separator 45, an air electrode sheet 46, a cathode conductive sheet 47, and a cover plate 48, wherein the air electrode sheet 46 is the first The metal piece, the cathode conductive piece 47 is used as the second metal piece, and the connection layer is exemplified by the tin layer 49, but is not limited thereto.

The air electrode sheet 46 has a porous structure, and the tin layer 49 is uniformly coated on the surface of the air electrode sheet 46 to be connected to the cathode conductive sheet 47 by electroplating, and then the tin layer 49 is heated to be After being melted, it is welded to the surface of the cathode conductive sheet 47, that is, the air electrode sheet 46 and the cathode conductive sheet 47 can be bonded.

Compared with the air electrode sheet 46 and the cathode conductive sheet 47 which are combined by spot welding or bolt locking, the air electrode sheet 46 and the cathode are bonded by first plating the tin layer 49 by fusion bonding. The conductive sheet 47 is not only relatively strong but not separated, and the combined contact area is large, so that the impedance value between the air electrode sheet 46 and the cathode conductive sheet 47 is greatly reduced. In addition, problems such as leakage, rust, and the like caused by leakage of the electrolyte of the zinc-air fuel cell 40 from between the air electrode sheet 46 and the cathode conductive sheet 47 can be further reduced.

The above is only a preferred embodiment of the present invention, and equivalent changes to the scope of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.

Claims (3)

An electroplating fusion splicing component comprising: a first metal member; a second metal member; and a connecting layer plated on a first surface of the first metal member, and the connecting layer is welded to the second metal member And a second surface, the first metal member is bonded to the second metal member; wherein the first metal member is an air electrode sheet having a porous structure, and the second metal member is a cathode conductive sheet. The electroplated fusion element of claim 1, wherein the connection layer is a tin layer. A method for preparing a plating fusion component, the method comprising: A. preparing a first metal member and a second metal member, wherein the first metal member is an air electrode sheet having a porous structure, and the second metal member is a cathode conductive sheet; B. electroplating a connection layer on the first surface of the first metal member; C. heating the connection layer to make the connection layer in a molten state; D. operating the first metal member to the first surface Contacting a second surface of the second metal member to weld the connecting layer in a molten state to the second surface of the second metal member.