Riveted structure of metal parts and bus bar using the riveted structure

Abstract

A riveting structure of metal pieces is provided in which joining of metal pieces becomes stable and strong, and resistance can be reduced even if metal pieces to be joined are of different kinds of materials from each other. The riveting structure of the metal piece includes: a metal plate (12) with a hole (14); and a disc-shaped conductive member that is riveted around the hole (14) after being inserted into the hole (14) (13), around the hole (14), a groove (17) is provided on at least one side, and on the other hand, a groove protruding from at least one side is provided on the outer periphery of the conductive member (13). Vertical flange (21), when the conductive component (13) is embedded in the hole (14) and the conductive component (13) is riveted to the metal plate (12), the vertical flange of the conductive component (13) ( 21) is crushed, and the groove (17) of the metal plate (12) is filled by the crushed vertical flange (21).

Description

technical field [0001] The invention relates to a riveting structure of a metal part which embeds and fixes other metal parts in a metal part and a bus bar using the riveting structure. Background technique [0002] Conventionally, riveting structures have been used in many cases for joining and fixing metal parts. In this riveting structure, for example, after fitting a fitting body formed of other metal parts into a hole provided in one metal part, crush the claw part provided in the fitting body so that it hooks. Hang on the one metal piece. Such a riveting structure is often used for terminals such as batteries and various connectors. [0003] As an example using the above-mentioned caulking structure, there is a connecting plate (bus bar) for connecting terminal electrodes between batteries. In recent years, demand for such bus bars has increased in battery packs (battery modules) installed in hybrid vehicles and electric vehicles that replace conventional gasoline-p...

AI Technical Summary

Problems solved by technology

In this way, to form a battery module, a plurality of bus bars are used depending on the number of battery cells combined, so the resistance of the bus bars themselves also becomes high.

Also, as mentioned above, the bus bars used in lithium-ion batteries, which are widely used in hybrid vehicles and electric vehicles, etc., are formed by combining conductive members made of different types of metal materials on a metal plate, Therefore, the resistance of the joint part cannot be ignored, which affects the power conversion efficiency and durability

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