4 results about "Fuel cell bus" patented technology

The application provides a hydrogen fuel cell bus energy-saving driving control method and system, and the method comprises the following steps: a hierarchical double-layer deep reinforcement learning architecture is designed; the upper-layer deep reinforcement learning controls the longitudinal speed of the hydrogen fuel cell bus by acquiring the speed, acceleration and ramp road condition and other traffic environment information of the hydrogen fuel cell bus and the front vehicle, so as to ensure the safe and stable driving of the hydrogen fuel cell bus; the lower-layer deep reinforcement learning optimizes the energy management of the hydrogen fuel cell by the speed output by the upper layer; meanwhile, a rapid road comprising three ramps with different traffic flows is designed to perform offline training on the deep reinforcement learning algorithm, so as to obtain the optimized energy-saving driving control. The application realizes the longitudinal speed control and energy management optimization of the hydrogen fuel cell bus by using the double-layer deep reinforcement learning method, so that the hydrogen fuel cell bus can realize energy-saving driving.

This invention proposes an intelligent integrated thermal management system and method for fuel cell buses, comprising: a fuel cell thermal management circuit with a heat exchanger installed on it; a passenger compartment thermal management circuit connected to the heat exchanger, with a dual-core heat exchanger installed on it; a power battery thermal management circuit connected to the dual-core heat exchanger, with a four-way valve installed on it; a motor thermal management circuit connected to the four-way valve; and an air conditioning thermal management circuit connected in parallel to the dual-core heat exchanger.

This invention discloses a noise control method and system for fuel cell buses stopping at bus stops, relating to the field of fuel cell vehicle technology. The method includes: acquiring the distance between the vehicle's current position and the bus stop, and the current vehicle speed; when the distance is less than or equal to a set distance threshold and the vehicle speed is less than or equal to a set speed threshold, controlling the reduction of the fuel cell engine's output power, and acquiring the duty cycle of each fan in the fuel cell radiator; when the duty cycle of any fan is greater than a set proportional threshold, controlling the reduction of the fan duty cycle, disconnecting the connection between the fuel cell and the fuel cell radiator, and opening the connection between the fuel cell and the heat exchanger to reduce the temperature of the fuel cell coolant in the heat exchanger, thereby achieving short-term auxiliary cooling of the fuel cell, solving the problem of insufficient cooling of the fuel cell coolant, and balancing noise control and system thermal safety.