Lg Electronics Inc.

Korea Institute of Science and Technology

Lg Magna E-Powertrain Co., Ltd.

Byoungkuk Lee

Yong Bok Lee

Jeon Kook Lee

Sanghoon Park

Donghee Kim

Jungbum Kim

Seunghee Ryu

Bokseong Choe

Yunchul Jung

Sol-Ji Ryu

Chanheung Park

A bearing test apparatus has a bearing cap coupled to an outer ring of a bearing to be tested (a 'test bearing'), a driving rotary shaft coupled to an inner ring of the test bearing to rotate the inner ring, and a bearing torque meter for measuring a single torque of the test bearing, wherein an extension bar is formed at the bearing cap to protrude thereon, wherein the bearing torque meter includes a measurement rod configured to contact the extension bar and be fixed to support the extension bar in a direction opposite to a rotating direction of the driving rotary shaft, and a power sensor for measuring a force applied to the measurement rod, wherein the single torque of the test bearing is calculated based on a distance from the driving rotary shaft to the measurement rod and a force applied to the measurement rod.

Bearing test apparatus for testing durability of bearing

A charging apparatus and an electric vehicle including the same are disclosed. The charging apparatus includes a rectifier to rectify input alternating current (AC) power in a charging mode, an interleaved buck-boost converter to convert the rectified power into direct current (DC) power to supply the converted DC power to a battery, the interleaved buck-boost converter including a plurality of buck-boost converters, and a converter controller to control the interleaved buck-boost converter, wherein a first buck-boost converter of the interleaved buck-boost converter includes a first buck switching element connected to the rectifier, a first boost switching element, an inductor connected between the first buck switching element and the first boost switching element, a first diode connected in parallel between the first buck switching element and the inductor, and a second diode connected between the first boost switching element and an output of the interleaved buck-boost converter.

Charge apparatus and electric vehicle including the same

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Seoul, South Korea

Byoungkuk Lee