Lg Energy Solution, Ltd.

Neuros Co., Ltd.

Myung-Hwan Kim

Seung-Woo Kim

Jong-Seon Kim

Won-Tae Joe

Doo-Kyung Yang

Jin-Hyung Lim

Du-Seong Yoon

Min-Seo Kim

Se-Ho Park

Ii-Hyung Jang

Il-Hyung Jang

There is provided a method for collecting and reusing an active material from positive electrode scrap. The positive electrode active material reuse method of the present disclosure includes (a) thermally treating positive electrode scrap comprising an active material layer on a current collector in air for thermal decomposition of a binder and a conductive material in the active material layer, to separate the current collector from the active material layer, and collecting an active material in the active material layer, (b) washing the collected active material using a lithium precursor aqueous solution which is basic in an aqueous solution and drying, and (c) annealing the washed active material to obtain a reusable active material.

Method for reusing active material using positive electrode scrap

Disclosed is a technique capable of improving the life span of a battery by managing the charging of the battery. The battery charging management apparatus includes a degradation rate estimating unit configured to estimate a degradation rate of a secondary battery; a ceiling calculating unit configured to calculate a charge ceiling voltage based on the degradation rate estimated by the degradation rate estimating unit; a charge control unit configured to control the charging of the secondary battery so that the secondary battery is charged only up to the charge ceiling voltage calculated by the ceiling calculating unit; and a memory unit configured to store information required for operating at least one of the degradation rate estimating unit, the ceiling calculating unit and the charge control unit.

Battery charging management apparatus and meihod

An ornithopter with an airframe structure that is lightweight, simple and stable and can generate sufficient lift and thrust. The ornithopter comprises a body, a main wing attached to an upper portion of a front section of the body, and a tail wing attached to a rear section of the body. The ornithopter further comprises a power source and a power transmission mechanism installed within a housing of the body. The main wing includes a wing frame composed of a plurality of frame rods and a skin attached to the wing frame for forming an outline of the main wing. The wing frame of the main wing is supported by a support means exposed to the outside at the upper portion of the front section of the body. The power transmission mechanism includes a gear train for adjusting the rotational motion of the power source at a proper speed and transferring it to the main wing, and connecting rods for converting the rotational motion into a swing motion of the main wing. Flight time of the ornithopter can be prolonged considering its weight and the power source can be easily manipulated.

Power-driven ornithopter

A power-driven ornithopter piloted by a remote controller wherein a takeoff and landing motion, a climbing and descending motion, and a turning motion of the ornithopter can be controlled using the remote controller. The ornithopter comprises a body, a main wing attached to an upper portion of a front section of the body, and tail wings attached to a rear section of the body. An electric motor, a power transmission mechanism, a battery, first and second servo motors and a controller are installed within a housing of the body. A crank arm is connected to a rotating shaft of the first servo motor and a connecting rod attached to a free end of the crank arm is then pivotally connected to a lower edge of the horizontal tail support. The second servo motor is mounted into a recess formed at an upper side of a rectangular parallelepiped of the horizontal tail support and a rotating shaft of the second servo motor is disposed on a central axis of the horizontal tail. A vertical tail support is supported by the rotating shaft of the second servo motor so that it can be swung on the rotating shaft of the second servo motor in a right and left direction as the rotating shaft of the second servo motor rotates.

Power-driven ornithopter piloted by remote controller

Growing community of inventors

Daejeon, South Korea

Myung-Hwan Kim