Other

Hyosung Corporation

Hyosung Heavy Industries Corporation

Taewoong Medical Co., Ltd.

Bauer Hammar International, Inc.

Panax Etec Co., Ltd.

Jeong Min Lee

Byung Hwan Jeong

Seong Jae Lee

Jin Hee Lee

Kyong Min Shin

Byeng Joo Byen

Hyun Chul Rhim

Ho Seok Yang

Hyo Keun Lim

Young Ger Seo

Hak Soo Kim

The present invention relates to a composite charging system and method capable of producing charging power for an electric vehicle by utilizing hydrogen energy supplied to a hydrogen vehicle, and compositely connecting hydrogen energy with a power system to efficiently perform charging of the electric vehicle, and more flexibly coping with the use of energy. The composite charging system according to the present invention comprises: a hydrogen charger which charges hydrogen into a vehicle; a hydrogen power supply system which generates and supplies power on the basis of hydrogen; a system power supply system which supplies power from a power system; an electric charger which charges the electric vehicle; and a battery power supply system which stores power supplied from the hydrogen power supply system and the system power supply system, and supplies the stored power to the electric charger.

Composite charging system and method

Provided is a switching control method for an isolated bidirectional DC-DC converter, wherein the isolated bidirectional DC-DC converter connected between a DC grid system and a battery uses multiple switching controls together depending on a voltage of the battery, thereby facilitating high efficiency control. In the isolated bidirectional DC-DC converter according to the present invention, switching of a first switching unit and a second switching unit is controlled to control the flow of power by changing the bidirectional DC-DC voltage between the DC grid system and the battery, and the first and the second switching unit are switched using PSM switching control, SPWM switching control, and DPWM switching control together depending on a voltage with which the battery is charged and load capacity, thereby enhancing efficiency of the system.

Switching control method for isolated bidirectional DC-DC converter

The present invention relates to a method for driving an emergency generator using an energy storage system in which, when the power of an emergency generator is applied, an energy storage system is allowed to handle the load demand, thereby driving the emergency generator at maximum efficiency. For this purpose, the method for driving an emergency generator using an energy storage system (ESS), including, after an emergency generator has been applied and until the emergency generator reaches a preset maximum efficiency driving state, handling, by an ESS, load demand using previously stored power, and, when the emergency generator reaches the preset maximum efficiency driving state, maintaining the driving of the emergency generator in the maximum efficiency driving state.

Method for driving emergency generator using energy storage system

The storage chamber for secondary material applicable to the discharging direction of contents stored in the container consists of body with storage space and inseparable operating section mounted around the globe. If above operating section moves up, opening and closing hole made or formed in the storage space of storage is opened and contents stored in the storage space is dropped and mixed with contents stored in the container. The mixed contents are discharged via a vent mounted on the top of operating section. A vent is not opened until the operating section is opened, and closing section of opening and closing hole is provided so that the opening and closing hole may not be not clogged after being opened.

Cap assembly having storage chamber for secondary material with movable working member

The object of the present invention is to provide an electrode device for high frequency thermotherapy, including a main casing, an electrode needle, a first engaging part, and a guide unit coupled to the engaging part to be longitudinally moved relative to the electrode needle. The guide unit has a guide tube to receive therein the electrode needle to expose a tip of the electrode needle to the outside of an end of the guide tube. Thus, the exposed length of the tip of the electrode needle is varied according to a position that the guide unit is coupled to the engaging part. The electrode device may further include a three-way valve -provided between the main casing and the guide unit to supply a liquid medicine or water t a desired part of a patient body.

Electrode device for high frequency thermotherapy

A moveable and sectional block toy, including: a main frame which has a motor operating by receiving the input of a switching signal from the external and driving gears rotating by receiving the driving force of the motor; a plurality of gears which rotate with engaging the driving gear and a plurality of wheels which operate with assembling at a selected gear among the gears; and, a plurality of connection stands for one another connecting the main frame, the gears, and the wheels, thereby shaping one unitary body.

Moveable and sectional block toy

A bottle cap having an integral opener on a side thereof, which is capable of opening a bottle cap made of high strength metal sheet, is disclosed. The opener includes: two reinforcing portions, a head portion, two arms, a body and two branches. The head portion is rectangularly but gently bent or its edge is curled up inwardly in order to eliminate a sharp edge therefrom. The two arms connect the upper end of the body of the opener to the side of the bottle cap, and the body is reinforced with two reinforcing portions which are added to the left and right of a longitudinal center ridge. The two branches are divided from the lower end of the body of the opener, and are outwardly bent away from the bottle. Instead of the two branches, a ring may be attached to the lower end of the body, and, in this way, the user is not hurt, and the bottle cap can be opened with a reinforced strength.

Bottle cap having integral opener

Thermoplastic cores reinforced with strong magnetic shots or/and particles are molded and then thermosets are molded around this thermoplastic core. The thermoplastic core is decored by a magnet at a high temperature above the softening point of thermoplastic matrix to produce a hollow curved internal space.

Growing community of inventors

Seoul, South Korea

Jeong Min Lee