Korea Aerospace Research Institute

Lg Energy Solution, Ltd.

Jeong Eon Park

Tae Woo Kim

Gun Woo Moon

Wook Jang

Roun Kim

Seung Hyun Choi

Ju Hyun Bae

Jung Kyu Han

A secondary battery includes an electrode assembly, an electrolyte solution, a seal tape, and a can. The electrode assembly has a structure in which a positive electrode, a negative electrode, and a separator are in a wound state. The seal tape includes a base and an adhesive layer provided on one surface of the base. The can accommodates the electrode assembly and the electrolyte solution. The negative electrode is disposed along an outer circumferential surface of the electrode assembly and the seal tape is provided on the outer circumferential surface. The adhesive layer is configured to expand when in contact with the electrolyte solution.

Secondary battery comprising seal tape

Disclosed are a high-efficiency integrated power circuit with a reduced number of semiconductor elements and a control method thereof. A high-efficiency integrated power circuit of an integrated converter includes an input port, which is a first port, to which power for driving the integrated converter is input, a non-isolated port, which is a second port, for outputting, to outside the high-efficiency integrated power circuit, an allowable amount of power generated when power input through the input port passes through an inductor, and an isolated port, which is a third port, for conducing remaining power excepting power output through the non-isolated port and for maintaining the conducted remaining power inside the high-efficiency integrated power circuit.

High-efficiency integrated power circuit with reduced number of semiconductor elements and multiple output ports

Provided is an integrated DC/DC and AC/DC converter system including a main relay selectively connected to any one of an AC power supply unit and a DC power supply unit and a controller connecting the main relay to the AC power supply unit or the DC power supply unit. Electrical energy based on the AC power output from the AC power supply and electrical energy based on DC power output from the DC power supply unit may be selectively provided to a load.

Integrated DC/DC and AC/DC converter system

An alternating current (AC)-to-direct current (DC) (AC-DC) converter circuit system, and a method of designing the AC-DC converter circuit system. The AC-DC converter circuit system includes an AC-DC converter configured to receive an AC grid input from an electric power source and convert the AC grid input into DC battery power. The AC-DC converter may include a primary transformer including a plurality of field-effect transistors (FETs), and a secondary transformer configured to allow the DC battery power to be output from a grid that is allowed to have a positive value by the primary transformer.

Growing community of inventors

Daejeon, South Korea

Jeong Eon Park