Lg Electronics Inc.

Lg Magna E-powertrain Co., Ltd.

Taehee Kwak

Yoonho Yoo

Doyong Ha

Jaeheuk Choi

Jongsu Kim

Changhum Jo

Jungwook Moon

Minjung Kim

Youngjin Kim

Sangil Park

Seungmo Jung

Hyeongjun Kim

Taemin Yoon

The present invention relates to a motor comprising: a motor housing; a stator which is provided in the motor housing and has a coil; a rotor installed in the stator to be rotatable about a rotary shaft; and a spray hole which is formed in the circumferential surface of the rotor by passing through the circumferential surface in a radial direction and which sprays a cooling fluid in the motor housing onto the coil according to the rotation of the rotor. Therefore, cooling by oil convection can be accelerated while minimizing resistance due to the oil.

Motor

Disclosed herein is a power device of an electric vehicle including a motor housing that is configured to accommodate a motor which generates a driving force, and an inverter housing that has the shape of a cylinder which has first and second opened surfaces, that is coupled to the motor housing such that a shaft which delivers the driving force is coupled to the motor, and that is configured to accommodate an inverter module which supplies first, second and third AC power to the motor.

Power device of electric vehicle

Disclosed herein is a motor including a shaft, a rotor, a motor housing forming an inner space to receive the shaft and the rotor therein, a stator received in the motor housing and disposed outside the rotor based on a radial direction of the shaft, a first flow path disposed outside the stator based on the radial direction of the shaft such that a first fluid flows in the first flow path, the first fluid being discharged to the inner space and cooling the stator and the rotor, and a second flow path disposed between the first flow path and the stator based on the radial direction of the shaft such that a second fluid flows in the second flow path, the second fluid absorbing heat of the stator transferred through a flow path wall.

A case for an electric motor includes a case body provided with an inner case and an outer case together forming a cooling fluid flow path penetratingly formed in an axial direction of the case body, and a circuit component mounting portion protruding from an outer surface of the outer case to mount a circuit component such that the circuit component is cooled by cooling fluid. Case covers are coupled to both end portions of the case body so that the electric motor and the circuit component can be simultaneously cooled by the single cooling fluid flow path. In this way, a separate circuit component case for mounting the circuit component can be excluded, thereby reducing a size and weight of the case.

Case for electric motor

An air conditioner including a suction channel module having a suction module housing with a first and a second suction channel provided therein, and a suction connection channel to guide air between the first and second suction channels; a discharge channel module having a discharge module housing with a first and a second discharge channel provided therein, and a discharge connection channel to guide air between the first and second discharge channels; a first heat exchanger disposed between the first suction channel and the first discharge channel to exchange heat with air that passed through the first suction channel and operate as one of a condenser and an evaporator; and a second heat exchanger disposed between the second suction channel and the second discharge channel to exchange heat with air that passed through the second suction channel and operate as the other of the condenser and the evaporator.

Air conditioner apparatus with partitioned suction and discharge channels

Provided is a cascade heat pump. The cascade heat pump includes a first refrigerant cycle including a first compressor and a first indoor heat exchanger, a second refrigerant cycle including a second compressor and a second indoor heat exchanger, an outdoor heat exchanger in which a refrigerant compressed in the first compressor or the second compressor is condensed, a bypass tube allowing the refrigerant compressed in the second compressor to bypass the first compressor, thereby flowing into a discharge side of the first compressor, and a first flow rate regulating part disposed on a discharge side of the second compressor to introduce the refrigerant discharged from the second compressor into one of the first compressor and the bypass tube.

Cascade heat pump

A cooling system and a control method thereof are provided. The cooling system may include a first compressor, a second compressor disposed downstream of the first compressor, an outdoor heat exchanger the performs heat exchange between refrigerant compressed in the first and/or second compressor and external air, an expansion device that decompresses the refrigerant condensed in the outdoor heat exchanger, a cooling evaporator evaporating the refrigerant decompressed in the expansion device, a bypass tube that guides refrigerant compressed in the first compressor to the outdoor heat exchanger, bypassing the second compressor, and a valve device controlling the flow of refrigerant discharged from the first compressor so as to selectively introduce refrigerant into the second compressor.

Cooling system and control method thereof

An air conditioner includes a first compressor and a first indoor heat exchanger, and the air conditioner forming a first refrigeration cycle. A cooler includes a second compressor and a second indoor heat exchanger, and the cooler forming a second refrigeration cycle The cooler includes a sensing part to detect a pressure and/or temperature of a refrigerant circulating in the second refrigeration cycle; and a branch part includes a plurality of branches for dividing the refrigerant to be introduced into the second heat exchange part.

Growing community of inventors

Seoul, South Korea

Taehee Kwak