Secondary battery terminal and method for manufacturing secondary battery terminal

Abstract

Provided are a terminal for a secondary battery and a method for manufacturing the terminal for the secondary battery, the terminal being capable of manufacturing an electrode terminal made of different types of metals having excellent bonding strength. The method for manufacturing a terminal disclosed herein comprises: a step for preparing a first member and a second member which are each made of metal and which constitute a terminal, the first member being formed in a plate shape and having, on one surface thereof, a recess into which a part of the second member is fitted, and the second member having a flange portion housed in the recess; and a step for fixing the first member and the second member to each other by ultrasonic pressure bonding, in which ultrasonic vibration is applied while applying pressure in the stacking direction of the first member and the second member in a state in which the flange portion of the second member is disposed in the recess of the first member, thereby fixing the first member and the second member to each other. As a result, the flange part is extended, and a part of the extended flange part is pressed against the inner wall surface of the recessed part, thereby performing the ultrasonic pressing.

Description

Technical field [0001] The present invention relates to terminals of electrode terminals for secondary batteries and a manufacturing method thereof. In detail, it is related to terminals composed of two metals and a method of fabricating their manufacturing. Background technique [0002] Non-aqueous electrolyte secondary batteries such as lithium ion secondary batteries Since the energy density is high than the existing battery, it has been used as a power source for electricity-driven source, or is mounted in a personal computer and mobile terminal. Electric products such as electric products. In particular, the battery pack constituted by a closed-type lithium ion secondary battery which is light and obtained as a single battery is preferably used as an electric vehicle (EV), plug-in hybrid vehicle (PHV), hybrid vehicle ( HV) The driving of the drive is high output power supply. [0003] The closed type secondary battery constituting such a battery pack is provided: the battery...

AI Technical Summary

Problems solved by technology

[0009] However, an electrode terminal made of a composite material such as that described in Patent Document 1 is generally expensive to manufacture.

In addition, as described in Patent Document 2, the connecting terminals are joined by ultrasonic welding, and thereafter, in the caulking method, there is a possibility that parts may be deformed by the caulking.

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