Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

Abstract: The present disclosure relates to an electrolyte injection system, and the electrolyte injection system is a system for injecting an electrolyte solution into a pouch in which an electrode assembly is embedded, the electrolyte injection system comprising: an injection pipe for injecting an electrolyte solution; an electrolyte solution supply portion supplying an electrolyte solution; and a manifold portion connecting an injection pipe and an electrolyte solution supply portion to prevent a reverse flow of the electrolyte solution and ensure precision of injection amount so that a large amount of electrolyte solution may be accurately and rapidly injected.

Abstract: A magnetoresistance memory device includes a lower electrode, a barrier layer, a variable resistance layer, an upper electrode, and a first layer stack. The lower electrode contains one of amorphous carbon and amorphous carbon nitride. The barrier layer is provided on the lower electrode and contains one of tungsten nitride (WN) and silicon tungsten nitride (WSiN). The variable resistance layer is provided on the barrier layer and contains a variable resistance material. The upper electrode is provided on the variable resistance layer and contains one of amorphous carbon and amorphous carbon nitride. The first layer stack is provided on the upper electrode and includes a first ferromagnetic layer, a second ferromagnetic layer, and an insulating layer between the first ferromagnetic layer and the second ferromagnetic layer.

Abstract: There is provided a wireless communication device capable of providing two-way communication while minimizing the consumption of power so as to be continuously operable for a long period of time simply with battery power, without the aid of a constant power source. The wireless communication device includes: a wireless network interface connected to an access point (AP), which provides wireless local area network (WLAN) access; and a session maintenance packet transmission controller controlling the wireless network interface to repeatedly transmit a session maintenance packet, wherein the session maintenance packet includes a MAC keep-alive message, an address resolution protocol (ARP) response message, and a hole punching message.

Abstract: A fixing structure of an opening weather strip for a vehicle may include a door frame molding having a variable cross-sectional width and installed at a front end portion of a door frame, an opening weather strip fixing molding having a cross-sectional height, which varies according to the variable width of the door frame molding and installed at a top end portion of the door frame, and the opening weather strip mounted between the opening weather strip fixing molding and the door frame molding and supported upwards by the opening weather strip fixing molding with a predetermined height to match a vehicle body, thus sealing a space between the vehicle body and the door frame.