JPS5841631B2 - rinsetsuchikudenchikannosetsuzokuhouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting adjacent storage batteries in a storage battery device that uses a plurality of storage batteries as a set.

As a connection structure for a storage battery device, for example, the present applicant has proposed a connection structure that eliminates the disadvantages of the conventional structure using bolts and nuts and the structure using solder joints, as described in Utility Application No. 1983-4055, which the present applicant previously filed. As described above, a structure has been proposed in which a connecting conductor is joined to the terminals of adjacent storage batteries using a corrosion-resistant low-melting point alloy having a melting point of 40° C. to 180° C.

Also, directly connect the terminals of adjacent storage batteries with a melting point of 40°C to 18°C.
At the same time, a structure in which a corrosion-resistant low-melting point alloy at 0° C. is used for joining has also been proposed.

That is, the connection of adjacent storage batteries is, for example, pb-8n-B.
This method uses a corrosion-resistant low-melting-point alloy made of a ternary eutectic alloy or a quaternary eutectic alloy of Pb-8n-Bi-Cd to melt and join, which is a drawback of the connection structure that is tightened with bolts and nuts. Soldering is used to improve the corrosion of connections caused by acid and alkali mist generated from storage batteries, as well as poor conductivity and voltage drop caused by poor contact when simply tightening bolts and nuts, and to improve the shortcomings of solder-based structures. This is an extremely excellent connection structure that improves the problem of poor airtightness at the part where the terminal passes through the battery case lid due to the heat generated during the process, as well as the complexity of joining work.

In addition, in joining using the above-mentioned low melting point alloy, in order to improve workability, a foil-like material is used as the low melting point alloy, this low melting point alloy foil is inserted into the joint part, and the low melting point alloy foil is heated and melted. A method of joining has been proposed.

However, even though the degree of melting of the low melting point alloy foil has a great effect on the quality of the connection, insufficient consideration was given to the melting time, resulting in poor connections. There were drawbacks.

For example, if a low melting point alloy foil is inserted between the joined bodies and the degree of melting cannot be confirmed from the outside and the melting time is short, it may not melt at all and cannot be joined, or the melting may be due to the low melting point alloy foil Only a portion of the material is connected, and the bond is not completely bonded, resulting in poor reliability and uncertainty.

Conversely, if the melting time is long, the heating time will be longer.
Construction is time-consuming, and the low-melting point alloy leaves the joint and flows to the bottom, resulting in an insufficient amount of the low-melting point alloy and making it impossible to obtain a perfect joint.

Furthermore, in cases where a high heat source is used to shorten the melting time, if the melting time is longer than the appropriate time, the high temperature low melting point alloy will flow out from the joint to the bottom.
This may damage the storage battery lid, and heat may be conducted through the storage battery terminals, causing the storage battery lid to melt and deform.

The present invention provides a method for connecting adjacent storage batteries that eliminates the above-mentioned drawbacks, that is, a conductor that connects terminals of adjacent storage batteries or terminals of adjacent storage batteries, and a terminal connected to the conductor that has a melting point of 40° C. In the connection method of joining using low melting point alloy foil of 180 ° C., a melting check piece is provided integrally with the low melting point alloy foil protruding from the joint part, and the low melting point alloy foil provided with the melting check piece is attached to the joint part. The present invention provides a connection method characterized by insertion and heating and melting.

Next, the present invention will be explained in detail using the drawings.

Figure 1 shows an example of a storage battery device completed using the method of connecting adjacent storage batteries according to the present invention, where 1.1/ is a storage battery, 2 is a cathode terminal of storage battery 1, and 2' is an anode of storage battery 1'. Terminal 3 is a connecting conductor, and 4 is a corrosion-resistant low melting point alloy for joining the cathode terminal 2 and the connecting conductor 3 and the anode terminal 2' and the connecting conductor 3.

As shown in FIG. 2, the cathode terminal 2 and the connecting conductor 3 are made of a corrosion-resistant material having a melting check piece 6 integrally provided at the joint between the cathode terminal 2 and the connecting conductor 3 as shown in FIG. A low melting point alloy foil 5 of high quality is inserted, and then the low melting point alloy foil 5 is heated and melted to join.

Further, the anode terminal 2' and the connecting conductor 3 are also joined by the same method as the method of joining the cathode terminal 2 and the connecting conductor 3.

FIG. 3 shows another example of a storage battery device completed using the method of connecting adjacent storage batteries according to the present invention, and in the figure, the same reference numerals as in FIG. 1 are the same members.

Further, such a storage battery device does not use the connecting conductor 3 shown in FIG. 1, but the cathode terminal 2 of the storage battery 1 and the anode terminal 2' of the storage battery 1' are directly connected by a low melting point alloy 4.

This joining of the cathode terminal 2 and anode terminal 2' is carried out by integrally attaching a melting confirmation piece 6 protruding from the joint as shown in FIG. Insert the provided low melting point alloy foil 5, and then insert the low melting point alloy foil 5.
This is done by heating and melting.

A low melting point alloy foil 5 integrally having a melting check piece 6 protruding from the joint as shown in FIG.
When it is inserted into the joint between the cathode terminal 2 and the anode terminal 2' and heated, the upper melting check piece 5, which conducts heat the fastest, starts to melt, and then the low melting point alloy foil 5 melts. It melts sequentially from the top, and then the melting confirmation piece 6 at the bottom melts, and finally, the low melting point alloy foil 5 is completely cured.

In this way, by observing the state of the melting confirmation piece 6, the melting state of the low melting point alloy foil 5 can be judged from the outside, so that the low melting point alloy foil 5 can be properly melted, and a good condition can be obtained over the entire surface of the joint. connection can be easily obtained.

In addition, the heating and melting time of the low melting point alloy foil 5 can be set to an optimum time, which improves workability, and also makes the heating time too long, which may cause the molten low melting point alloy to separate from the joint. Things like this can be prevented.

Furthermore, even in cases where a high heat source is used for shortening the melting time, the heating and melting time can be adjusted to an appropriate value, and damage to the storage battery due to excessive heating and melting can therefore be prevented.

As described above, according to the present invention, in a device that connects adjacent storage batteries using low melting point alloy foil, a melting check piece is provided integrally with the low melting point alloy foil and protrudes from the joint, and the state of the melting check piece is checked. This makes it possible to judge the melting state of the low-melting point alloy foil, making it easy to properly melt the low-melting point alloy foil and obtain a good connection over the entire surface of the joint. It is possible to improve workability by optimizing the heating and melting time, and also to prevent the molten low-melting point alloy from separating from the joint, and to prevent it from heating and melting too much and damaging the storage battery. It is possible to achieve excellent effects such as being able to prevent such problems.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a storage battery device completed using the method of connecting adjacent storage batteries of the present invention, and FIG. 2 is an enlarged view of essential parts showing the state of the storage battery device shown in FIG. 1 before completion. A front view, FIG. 3 is a perspective view showing another example of a storage battery device completed using the method for connecting adjacent storage batteries of the present invention, and FIG. 4 is a state of the storage battery device shown in FIG. 3 before completion. FIG. 5 is a perspective view showing an example of a low melting point alloy foil used in the method for connecting adjacent storage batteries of the present invention. 1.1'... Storage battery, 2... Cathode terminal, 2'... Anode terminal, 3... Connection conductor, 5... Low melting point alloy foil, 6... Melting confirmation piece.

Claims (1)

[Claims] 1. In a connection method in which the terminals of adjacent storage batteries or the connecting conductor and the terminal connected to the conductor are joined using a low melting point alloy foil with a melting point of 408C to 180°C, a melting confirmation piece protruding from the joint part A method for connecting adjacent storage batteries, characterized by inserting a low melting point alloy foil integrally into a joint part and melting it.