Battery mounting assembly and battery replacement system

A battery mounting assembly comprising:

• a battery portion;
• and
• a battery mounting portion on which the battery portion is mounted as sliding thereto,
• wherein the battery portion comprises:
• a first guide configured to guide a sliding movement of the battery portion;
• a first connection terminal arranged on a first surface of the battery portion, the first surface of the battery portion facing the battery mounting portion;
• a fixing pin provided on the battery portion and configured to protrude from the battery portion or retract into the battery portion;
• and
• a fixing pin retreat button configured to control the fixing pin to protrude out of the battery portion or retract into the battery portion based on the fixing pin retreat button moving in a sliding direction of the battery portion,
• wherein the battery mounting portion comprises:
• a second guide configured to guide the sliding movement of the battery portion with the first guide;
• a second connection terminal arranged on a second surface of the battery mounting portion, the second surface of the battery mounting portion facing the battery portion, and connected to the first connection terminal;
• and
• a fixing hole formed in the second surface of the battery mounting portion facing the battery portion, and into which the fixing pin is inserted.