A welding device according to an embodiment of the present disclosure includes a welding rod configured to be inserted into a winding center hole provided at a winding center of an electrode assembly inserted into a battery can to weld an electrode tab of ...

The present invention relates to a method for inspecting the weld states of a battery, in which the weld states of a cylindrical battery are inspected, the cylindrical battery comprising: a cylindrical jelly roll in which a first current collector, a first...

A battery cell assembly and a method of manufacturing the same. The battery cell assembly includes a plurality of battery cells including anode terminals and cathode terminals, a plurality of lead tabs disposed on at least one of the anode terminal and the...

Provided is a bonding method for bonding a pair of members to be bonded (10, 20) made of conductive material and having bonding surfaces which are not positioned on the same plane, the bonding method including a bonding step in which the bonding surfaces (...

Disclosed herein is a rotary jig for battery cells to successively manufacture battery cells having different sizes including a main body configured to have a hexahedral structure having a rotary rod mounted at a lower end thereof, the main body being prov...

A direct welding process for joining a current collector (34) to a terminal pin (52) in the construction of electrochemical cells (50) is described. The resistance welding process utilizes increased current combined with an applied force to bond dissimilar...