NOVELTY - A lithium air battery (1000) has housing unit (100) including primary housing (110) having opened space (111) on upper side, and secondary housing (120) having air receiver (122) in which lower side is opened and vent hole (121) connected with air receiver is formed when placing on upper portion of primary housing, primary electrode portion (200) including lithium metal (210) provided in space of the primary housing, secondary electrode portion (300) including porous air electrode (310) coupled to air receiver, and electrolyte portion (400).    USE - Lithium air battery is used for vehicle.    ADVANTAGE - The lithium air battery having firmly inter-coupled electrodes, improved reliability and excellent durability is economical and easily charged and discharged, and prevents ion leakage.    DETAILED DESCRIPTION - A lithium air battery (1000) has housing unit (100) including primary housing (110) having opened space (111) on upper side, and secondary housing (120) having air receiver (122) in which lower side is opened and vent hole (121) connected with air receiver is formed when placing on upper portion of primary housing, primary electrode portion (200) including lithium metal (210) provided in space of the primary housing, secondary electrode portion (300) including porous air electrode (310) coupled to air receiver on lower side of the secondary housing, and electrolyte portion (400) placed on upper portion of primary electrode portion when equipped in space of the primary housing. The secondary housing is accommodated on the space of the primary housing and tightly sealed.    DESCRIPTION OF DRAWING(S) - The drawing shows a disassembled perspective view of the lithium air battery.    Housing unit (100)    Primary housing (110)    Space (111)    Secondary housing (120)    Vent hole (121)    Air receiver (122)    Primary electrode portion (200)    Lithium metal (210)    Secondary electrode portion (300)    Porous air electrode (310)    Electrolyte portion (400)    Lithium air battery (1000)