Crimping structure for metal materials, and bus bar using said crimping structure

Abstract

To provide a crimping structure for metal materials, wherein it is possible to stably and tightly join metal materials and to reduce the electrical resistance even when the joined metal materials are formed from different materials. A crimping structure for metal materials, the crimping structure being provided with a metal plate (12) on which a hole (14) is formed, and a disk-shaped conductive member (13) which is crimped to the periphery of the hole (14) after being inserted into the hole (14), wherein a groove (17) is disposed on at least one surface in the periphery of the hole (14), and a perpendicular flange (21) protruding from at least one surface is disposed on the outer circumference of the conductive member (13). When the conductive member (13) is inserted into the hole (14) and is crimped to the metal plate (12), the perpendicular flange (21) of the conductive member (13) becomes crushed, and the groove (17) on the metal plate (12) becomes filled with the crushed perpendicular 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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