Abstract: This invention provides nonaqueous electrolyte solutions for lithium batteries. The nonaqueous electrolyte solutions comprise a liquid electrolyte medium; a lithium-containing salt; and at least one oxygen-containing brominated flame retardant.

Abstract: The present disclosure relates to a rail transit signal system with multi-network integration, including: a wayside train control subsystem for simultaneously supporting mixed tracking operation of a China train control system (CTCS)-based national railway train and a communication based train control (CBTC)-based urban rail transit train; a compatible carbome subsystem for realizing cross-line operation of a national railway line network, an intercity railway network, a municipal railway network, and an urban rail transit network; a networked intelligent dispatching subsystem for realizing intelligent dispatching management of rail transit line networks and cooperation of line network operation plans between different rail transit line networks; an interlocking subsystem being respectively communicatively connected to and interacting with the wayside train control subsystem, the compatible carbome subsystem, and the networked intelligent dispatching subsystem; and a wireless train-ground communication subsys

Abstract: An implementation method for an independent multimode train control system based on a trackside platform is provided. According to the implementation method, a trackside train control system and an interlocking system are provided independently to meet requirements of hybrid operation of trains having different systems; and at the same time, during operation of a train in a moving block mode, once a trackside control system fails or an on-board system fails, the multimode train control system can ensure that the train is degraded automatically and operates according to a degraded mode.

Abstract: A parachute system and a safety protection method of an unmanned aerial vehicle (UAV), and relates to the technical field of intelligent storage. The parachute system of the UAV includes: a sensor configured to detect the flight state of the UAV, a parachute; and a controller electrically connected with the sensor and the parachute, respectively, and configured to obtain the flight state of the UAV from the sensor, and control the parachute to open when the UAV is in an unstable state.