Electric compressor for vehicle

An electric compressor for a vehicle, the electric compressor comprising:

• an electric motor provided with a stator, a rotor, and a rotary shaft, stator including a stator core;
• a compression unit configured to compress a refrigerant according to a rotation of the rotary shaft;
• an inverter unit configured to control driving of the electric motor;
• a first insulator and a second insulator configured to be inserted into opposite end portions of the stator core along an axial direction of the rotary shaft and respectively coupled to opposite ends of the stator core, the first insulator having an end portion in the form of a hollow cylinder, the end portion including an outer circumferential surface, an inner circumferential surface, and an end face, and including
• a connection terminal fixing unit integrally formed with the first insulator and protruding from the outer circumferential surface of the first insulator, such that a top surface of the connection terminal fixing unit and the end face of the first insulator lie in the same plane;
• a sealing terminal configured to electrically connect the electric motor and the inverter unit to each other, the sealing terminal including
• first connection pins, and
• second connection pins configured to be connected to the inverter unit;
• a plurality of connection terminals including
• male terminals configured to electrically connect a plurality of coils wound on the stator core, and
• female terminals configured to connect to the first connection pins provided at the sealing terminal;
• and
• a connection terminal covering unit surrounding a portion of the connection terminals and being coupled to the connection terminal fixing unit, wherein the connection terminal covering unit is detachably coupled to the connection terminal fixing unit and includes:
• a female terminal accommodating unit to accommodate a portion of the female terminals;
• a male terminal shielding unit formed to shield a portion of the male terminal fixed to the fixing groove;
• and
• a fastening unit part protruding on a first side of the male terminal shielding unit portion to be fastened to the connection terminal fixing unit,
• wherein a plurality of fixing grooves are formed to extend across the top surface of the connection terminal fixing unit and the end face of the first insulator, such that a portion of each male terminal is received and fixed in the fixing grooves, and
• wherein junction units having a ‘V’ shape are formed on each of the female terminals such that the male terminals are connected to the junction units, respectively, by welding while the male terminals are seated inside the junction units.