Apparatus and Method for Inspecting Welding of Secondary Battery

An apparatus for inspecting welding for a secondary battery, which inspects whether a defective welding occurs in a welding apparatus that welds overlapping portions of an electrode tab and an electrode lead to each other by using electrical energy, the apparatus comprising:

• a measuring unit measuring a power value (P) supplied to the welding apparatus and a taken time (S) when the electrode tab and the electrode lead are welded to each other to obtain measured welding data (Data);
• an instrument unit obtaining a waveform representing a relationship between the power value (P) and the taken time (S) by using the measured welding data obtained by the measuring unit to display the waveform on a graph;
• and
• an inspection unit comparing the measured welding waveform displayed on the graph with a normal welding waveform to inspect, in real-time, whether a defective welding occurred.