Hyundai Motor Company

Kia Motors Corporation

Hyunyoo Kim

Chang Ha Lee

Hyuckroul Kwon

Jeong Hee Park

Kyoung Ku Ha

JuHan Kim

Hyuck Roul Kwon

Sae Hoon Oh

Byeong Seung Lee

Sae Han Oh

A rotor assembly for a motor includes a rotor shaft having a journal portion formed in an axial direction and having a predetermined radius about an axis, and a center shaft portion extending along the axial direction from the journal portion and having a radius smaller than a radius of the journal portion about the axis; a cylindrical, integral permanent magnet inserted into the center shaft portion to surround an outer circumferential surface of the center shaft portion and being supported by the journal portion; and a sleeve inserted into the rotor shaft to surround an outer circumferential surface of the journal portion and an outer circumferential surface of the integral permanent magnet, supporting the integral permanent magnet in the axial direction, and supporting the outer circumferential surface of the center shaft portion in the radial direction.

Rotor assembly for motor

A valve device includes: a valve housing having a valve passage connected with an air flow passage; a valve disk rotatably disposed inside the valve housing through a valve driver and changing air flow cross-section of the valve passage; and a porous member installed at the valve disk and positioned in an open section between the valve disk and the valve passage.

Driving pressure adjusting valve device for fuel cell system

A humidifier for a fuel cell enables moisture exchange between supply air supplied from an air compressor and exhaust air discharged from the fuel cell. In particular, the humidifier of the fuel cell may include: i) a housing main body; ii) a humidification membrane module that is provided in the housing main body; and iii) a bypass unit that is provided in the housing main body to selectively bypass the supply air supplied from the air compressor and the exhaust air discharged from the fuel cell.

Humidification device for fuel cell

A humidifying device, which exchanges moisture between air supplied from an air compressor and air exhausted from the fuel cell, for a fuel cell, includes: a housing main body; at least one humidifying membrane module disposed in the housing main body; and a valve assembly which is disposed in the housing main body and adjusts a supply amount of exhaust air flowed into the at least one humidifying membrane module based on a predetermined supply amount of supply air flowed into the at least one humidifying membrane module.

Humidifying device for fuel cell

A fuel cell stack is provided and includes a plurality of unit cells in which manifolds are provided and an end structural body that includes a current collector and an end plate. The end structural body is disposed at each of outermost sides of the unit cells. Additionally, a heat transfer member is disposed between the end structural body and the outermost side of the unit cell and contacts the outermost side of the unit cell in a planar direction.

Fuel cell stack

An air foil bearing assembly includes: a bearing housing having a hollow into which a rotary shaft is fitted and having a slot formed in an axial direction on an inner circumference surface of the hollow; a bump foil having a bending end engaged to the slot formed at one end portion, rolled in a circumferential direction inside the hollow, and having a free end of another end portion located on the bending end; a top foil having a bending end engaged to the slot formed at one end portion, rolled in a second circumferential direction inside the bump foil, and having a free end of another end portion located on the bending end; and a stopper provided on each of both sides of the top foil in the circumferential direction and preventing the bump foil from protruding radially outwards from the hollow.

Air foil bearing assembly

A humidifier for a fuel cell includes a membrane module which accommodates therein a humidifying membrane, a first cap unit coupled to one side of the membrane module and supplies supply air to the membrane module, a second cap unit coupled to another side of the membrane module and discharges humidified air introduced from the membrane module, and a bypass tube provided in the second cap unit and bypasses condensate water introduced into the second cap unit to the membrane module.

Humidifier for fuel cell

Disclosed herein is a humidification device for a fuel cell. The humidification device for a fuel cell, which performs membrane humidification of exhaust gas exhausted from a cathode of a fuel cell and dried air supplied through an air compressor and supplies the humidified air to the cathode, includes: a main membrane module including several bundles of first hollow-fiber membranes disposed in the main membrane module and a sub-membrane module connected to the main membrane module and including several bundles of second hollow fiber membranes disposed in the sub-membrane module.

Humidification device for fuel cell and fuel cell system comprising the same

The present disclosure provides a membrane humidifier for a fuel cell including: a case; a hollow fiber membrane module covering the case; a housing coupled to both ends of the hollow fiber membrane module; a plurality of hollow fiber membranes arranged in the case; and a hollow fiber membrane guide structure installed at one end or both ends of the hollow fiber membrane module and having a potting material layer formed therein to fix the plurality of hollow fiber membranes.

Membrane humidifier for a fuel cell

A humidifier for a fuel cell is provided. The humidifier is configured to humidify discharged gas from a cathode of the fuel cell and dry air supplied via an air compressor using membrane, and supply humidified air to the cathode. The humidifier includes: a membrane module having bundles of hollow fiber membranes disposed therein and manifolds each of which is connected to both sides of the membrane module, configured to inject the discharge gas and the dry air into an interior of the membrane module, and discharge the discharged gas from which moisture is removed and the humidified air from the interior of the membrane module. At least one bypass line is inserted into interiors of the manifolds and is connected to the interior of the membrane module, and is selectively connected to a supplying path of the dry air supplied from the air compressor.

Growing community of inventors

Seoul, South Korea

Hyunyoo Kim