Abstract: Provided is an apparatus for battery diagnosis and module state change device capable of receiving power from a battery module through a connector connection with a battery module and operating, changing a diagnosis reference value for diagnosing, by a battery management system (BMS), a battery, and changing a setting value of the BMS to change a use of the battery module.

Abstract: A device for secure and automated enrollment-certificate bootstrapping on keys and certificates for a vehicle to everything (V2X) environment of a V2X end entity in a security credential management system (SCMS) for V2X communication, the device comprising: a processor; and a memory configured to store at least one instruction to be performed by the processor, the at least one instruction is configured to instruct the processor to perform steps of: by a secure bootstrapping service (SBS) agent, checking, for an SSB server, configuration information; by the SBS agent, making a request for bootstrapping data to the SBS server; and by the SBS agent, installing the bootstrapping data in the SBS server.

Abstract: Provided are a driving negotiation method and apparatus for supporting stability against a blind spot, an unexpected situation, etc. and a rapid judgment and response of an autonomous vehicle in various driving environments. The driving negotiation apparatus includes a wireless communication module configured to support vehicle to everything (V2X) communication and at least one processor connected to the wireless communication module. The at least one processor receives a cooperative request message from a first vehicle, broadcasts a cooperative request message and additional information required for a negotiation to surrounding vehicles, receives a cooperative response message from at least one second vehicle among the surrounding vehicles, and transmits a message indicating that the negotiation is possible or impossible to the first vehicle on the basis of the cooperative response message.

Abstract: The present invention relates to a water purifier of tap water. According to the present invention, a metal having a higher ionization tendency is ionized by exposing the metal to water to be purified. The metal having a higher ionization tendency is selected based on iron (Fe) and limited to metals having a higher ionization tendency as compared with iron (Fe). Electrons generated when a metal is ionized into water react with heavy metal ions that have already existed in the water to reduce the heavy metal ions. The heavy metal ions react with the electrons and are converted into heavy metal components. The heavy metals are pulled by magnets with a strong magnetism and removed from the water safely. When using a water purifier according to the present invention, users can drink water useful to the human body safely and hygienically since mineral components dissolved into water are not removed at all while removing the heavy metals although small quantities of heavy metals are dissolved into water.

Abstract: The present invention relates to a mineral eluting material for drinking water with granite as raw material and manufacturing method thereof and a structural body of mineral eluting material. The mineral eluting material includes granite crushed to sizes of 0.075.about.0.145 mm, submerged in 3.about.10% glucose solution for 24 hours, baked at 380.degree..about.400.degree. C. for 12.about.24 hours, and cooled at room temperature in a tightly sealed vessel. The structural body according to the present invention is manufactured by piling up granular granite and silver activated charcoal in 2-10 layers respectively and alternately in a cylindrical column. Water having passed the structural body according to the present invention comprising granular granite contains no impurities and abounds in minerals.