Abstract: Provided is a duct docking device for a ventilation seat of a vehicle. The duct docking device enables air to be easily blown to a seatback and a seat cushion with a passenger in a seat using only one blower by enabling a seatback duct mounted at the seatback and a seat cushion duct mounted at the seat cushion to be hermetically docked through a connector duct, etc. at an unfolded position of the seatback in which a passenger can sit, and by enabling the seatback duct mounted at the seatback and the seat cushion duct mounted at the seat cushion to be separated from each other at a folded position of the seatback in consideration of that there is no passenger in the seat.

Abstract: The present invention relates to a device for uniformly charging a battery pack, the device charging the battery pack by variably adjusting a balancing current according to a voltage difference between battery cells using an Internet of Things method based on low power Bluetooth communication. A device for uniformly charging a battery pack by variably adjusting a balancing current using Internet of Things based on a Bluetooth communication includes: a balancing part; a voltage monitoring part; an integrated controller; measuring point selecting switches; DACs; Bluetooth receiving parts transmitting a control signal received from the integrated controller to the measuring point selecting switches and the DACs by being connected thereto; and a Bluetooth transmitting part transmitting a signal for controlling the measuring point selecting switches and the DACs.