JPH0353416Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a terminal for a storage battery of an assembled battery that is used by collecting a large number of cells by connecting each terminal of a single cell or a monoblock battery with a connecting rod. This relates to an interconnection device.

[Conventional technology]

Conventionally, to connect multiple batteries, an L-shaped part was welded to the terminal of a storage battery such as those used for stationary batteries, and a connecting plate was tightened to this part with a bolt. A connection method is used in which the pole pole of a storage battery and a lead alloy connecting rod, such as those used in forklift batteries, are integrated by lead welding.

[Problem that the invention aims to solve] However, in the former case, it is necessary to thoroughly polish the contact surfaces of the L-shaped terminal and the connecting plate to make the surfaces smooth and remove dirt, etc., due to the surface contact connection. In the case of , since the L-shaped terminal is made of lead,
Due to plastic deformation due to tightening of bolts and nuts, problems arise such as requiring cumbersome maintenance inspections such as retightening at regular intervals.

The latter method involves welding the terminal and the connecting rod with lead, but it is convenient for batteries used in forklifts, etc., where all the steps up to the battery connection are done on a factory production line. If the batteries are to be sent to the site and then joined there as necessary, welding tools must be prepared, which is not a realistic solution.
Furthermore, if the battery is a sealed lead-acid battery or the like, applying heat to the terminal section for connection may damage the sealing properties of the terminal penetration section, which is not a preferred method of connection.

[Means for solving problems]

The present invention eliminates the drawbacks of the conventional connection methods as described above, and provides an assembled battery equipped with a connection structure that can provide a reliable connection with low contact resistance.

That is, the present invention is a battery assembly in which the terminals of a large number of storage batteries are connected by connection rods, and the terminals of the storage batteries are provided with screw holes for tightening bolts, and the terminals of the connection rod connecting the terminals are connected. To provide an assembled battery having a connection structure in which a ribbon having a spring mechanism on its contact surface and whose surface is plated with a metal having low electric resistance is set, and a connecting rod is tightened to a terminal with a tightening bolt.

〔Example〕

The present invention will be explained below with reference to the drawings.

FIG. 1 is a top view and a partially cutaway side view showing an embodiment of the connection between storage batteries in an assembled battery equipped with the connection structure of the present invention, in which 1 is a storage battery, 2 is a terminal, and the center of the upper end of the terminal 2 is shown in FIG. As shown in FIG. 2, a screw hole 3 is provided in the portion. 4 is the terminal receiving part 8
As shown in FIGS. 2 and 3, the terminal receiving portion 8 is made of phosphor bronze with a spring mechanism, and the surface is plated with a metal with low electrical resistance such as silver. is embedded. The connecting rod 4 is covered with an insulating lining 6 except for the terminal receiving portion which is the contact surface with the terminal 2. Also 7
denotes a tightening bolt (in this embodiment, the bolt is used as a sarabisu). In addition, FIG. 2 is a longitudinal cross-sectional view of the main part showing the connection state of the connecting rod 4 of the terminal 2, and FIG. 3 is a longitudinal cross-sectional view and a bottom view of the main part of the terminal connecting part of the connecting rod 4. It shows the setting status.

In this embodiment of the present invention, the connection between adjacent storage batteries 1 is made by placing the connecting rod 4 with the ribbon 5 set in the terminal receiving part 8 on the contact surface of the terminal 2, and connecting it to the terminal 2 with the tightening bolt 7 from the top surface of the connecting rod 4. This can be done smoothly and reliably by tightening.

As described above, this embodiment has a spring mechanism in the terminal receiving part 8, which is the contact part between the surface of the terminal 2 and the connecting rod 4, and the ribbon 5 with low contact resistance is inserted along the contact surface. Therefore, by simply tightening the terminal 2 with the tightening bolt 7 from the top of the connecting rod 4, the ribbon 5 acts as an intermediate material to bring about a reliable connection between the surface of the terminal 2 and the contact surface of the connecting rod 4. Further, by using the present embodiment, the connecting rod 4 can be mass-produced even with an insulating cover provided by standardizing the size as necessary. In addition, this embodiment is a breakthrough in the assembled battery connection method in that it is easy to remove the connection between batteries, and the connection rod 4 can be reused, and maintenance inspections such as retightening during long-term use are not required. It can be said.

Furthermore, this embodiment allows a reliable connection to be obtained without applying heat, and even when applied to an assembled battery made of a sealed lead-acid battery, there is no risk of impairing the sealing performance of the terminal penetration part, and the connection is secure. This feature can be particularly utilized in the production of sealed lead-acid batteries, which require an extremely high level of space efficiency due to advantages such as the ability to have low-profile parts.

[Effect of idea]

As described above, the storage battery terminal connection device of the present invention has a spring mechanism on the contact surface with the terminal, and when a connecting rod on which a ribbon with low electrical resistance is set is fitted to the terminal and tightened to the terminal with a tightening bolt, A reliable connection with low contact resistance can be obtained using a simple method, and there is no need to retighten tightening bolts during long-term use.Furthermore, the connection can be made without applying heat, making it possible to use sealed batteries. Even when applied to assembled batteries, it has excellent advantages such as there is no risk of impairing the sealing performance of the terminal penetration portion.

[Brief explanation of the drawing]

Fig. 1 is a top view and partially cutaway side view of the main parts of an assembled battery equipped with the connecting device of the present invention, Fig. 2 is an enlarged vertical sectional view of the main parts showing the state of contact between the terminal and the connecting rod, and Fig. 3 The figures are an enlarged longitudinal cross-sectional view and an enlarged bottom view of the essential parts showing the terminal contact portion of the connecting rod. 1... Storage battery, 2... Terminal, 3... Screw hole, 4
... Connection rod, 5 ... Ribbon, 7 ... Tightening bolt,
8...Terminal receiving part.

Claims (1)

[Claims for Utility Model Registration] A storage battery terminal connection device having a connecting rod 4, a ribbon 5, and a tightening bolt 7, wherein the ribbon 5 is made of a spring material and has a surface coated with a metal having low electrical resistance. The connecting rod 4 has a terminal receiving part 8, and the terminal receiving part 8
A terminal-to-terminal connection device for a storage battery, in which a ribbon 5 is set on the terminal 2, the terminal 2 is received and connected, and the terminal 2 is fixed to the terminal 2 with a tightening bolt 7.