Connector, battery management unit and battery pack

A connector comprising:

• a mounting portion having a main body, and configured to be electrically connected to a printed circuit board of a battery management unit configured to manage voltages of a plurality of battery cells;
• and
• a connection portion comprising two or more connection terminals configured to contact a counterpart connection terminal and the connection portion comprising a concave-convex structure formed on an outer side surface and an inner side surface of each of the two or more connection terminals,
• wherein the concave-convex structure comprises a plurality of protrusions respectively formed in each of the two or more connection terminals,
• wherein the plurality of protrusions are formed on both the inner side surface of each of the two or more connection terminals that are facing each other, and the outer side surface that is an opposite surface to the inner side surface,
• wherein the two or more connection terminals extend side by side in one direction from the main body of the mounting portion,
• wherein the two or more connection terminals are configured to have the counterpart connection terminal be inserted between the two or more connection terminals,
• wherein an end portion of each of the plurality of protrusions formed on the inner side surface of each of the two or more connection terminals protrudes to contact the counterpart connection terminal, and
• wherein the end portion of each of the plurality of protrusions formed on the inner side surface of each of the two or more connection terminals comprises a bending structure bent in a direction in which the counterpart connection terminal is inserted.