| abstract |
The present invention provides an electrochemical cell capable of increasing the connection strength between the terminal and the current collector, reducing the electrical resistance of the connection portion, and improving the uniformity and reliability of the connection portion. A positive electrode and a negative electrode having an active material layer formed on the current collector and having a current collector extension connected to a terminal; An electrode assembly in which a strip is inserted between the current collector extension of the electrode having at least one polarity and the current collector extension of the positive electrode and the current collector extension of the negative electrode are opposite to each other; And a terminal connected to the side of the electrode assembly, wherein at least one of welding, conductive bonding means, and soldering is used as a method of connecting the terminal to the side of the electrode assembly.n n n n Electrodes, Beads, Bulkheads, Electrochemical Cells |