A multi-module fuel cell system includes a plurality of fuel cell stacks, at least one battery connected to the plurality of fuel cell stacks, and a controller configured to determine whether the plurality of fuel cell stacks and the at least one battery are allowed to provide outputs in response to input of a required output, and controls either the plurality of fuel cell stacks or the at least one battery, selectively, to provide an output to satisfy the required output based on a result of determination as to whether outputs are allowed to be provided, and a method of controlling the same.

The present disclosure relates to systems and methods for controlling hydrogen stack power and load. The systems include at least one hydrogen stack, a pressure sensor, and a controller, wherein the controller is operable to increase or decrease the power to the at least one hydrogen stack in response to a change in pressure. The methods include generating hydrogen using at least one hydrogen stack, measuring the pressure of the generated hydrogen, and increasing or decreasing the power supplied to the at least one hydrogen stack in response to an increase or decrease in the pressure.

If a difference between pressure values detected by a plurality of pressure detectors is equal to or greater than a predetermined value, a anode pressure in the fuel gas supply pipe is estimated based on a supply situation of the fuel gas supplied from a pressure regulator and a consumption situation of the fuel gas in a fuel cell stack, and it is determined that a pressure detector detecting a pressure value closer to an estimated pressure value is a normal pressure detector. Thereafter, a power generation operation of a fuel cell system is continued based on the pressure value of the pressure detector determined to be normal.

The present invention relates to a high voltage-type redox flow battery comprising: a plurality of modules (100.sub.1, 100.sub.2, 100.sub.3, . . . , 100.sub.n) which are serially connected; and a battery management system (BMS) for monitoring a state-of-charge (SOC) of each of the plurality of modules (100.sub.1, 100.sub.2, 100.sub.3, . . . , 100.sub.n), wherein each of the modules (100.sub.1) includes an SOC balancing device comprising a stack (10), a positive electrode electrolyte tank (30a), a positive electrode pump (20a) for providing a positive electrode electrolyte of the positive electrode electrolyte tank (30a) to the stack (10), a positive electrode inlet pipe (21a) connecting the positive electrode electrolyte pump (20a) to the stack (10), a positive electrode outlet pipe (11a) connecting the stack (10) to the positive electrode electrolyte tank (30a), a positive electrode tank outlet pipe (31a) connecting the positive electrode electrolyte tank (30a) to the positive electrode electrolyte pump (20a), a negative electrode electrolyte tank (30b), a negative electrode pump (20b) for providing a negative electrode electrolyte of the negative electrode electrolyte tank (30b) to the stack (10), a negative electrode inlet pipe (21b) connecting the negative electrode electrolyte pump (20b) to the stack (10), a negative electrode outlet pipe (11b) connecting the stack (10) to the negative electrode electrolyte tank (30b), and a negative electrode tank outlet pipe (31b) connecting the negative electrode electrolyte tank (30b) to the negative electrode electrolyte pump (20b).

A system and method for controlling transition of a fuel cell vehicle from a normal operating mode to a hot operating mode having a fuel saving operating mode is described. The method comprises determining a required value of a traction power from the fuel cell system for the fuel cell vehicle; determining a net electric power output value of the fuel cell system based on a fuel cell system power output and a cooling electrical power value; and controlling the fuel cell vehicle to transition from the normal operating mode to the hot operating mode via a first transition mode or via a second transition mode so that the net electric power output value is equal to the required value of the traction power and a coolant inlet temperature at a coolant inlet of a fuel cell stack of a fuel cell system of the fuel cell vehicle is equal to a hot coolant temperature.

A fuel cell system including a plurality of fuel cells, and an electronic control unit configured to control the plurality of fuel cells. The electronic control unit includes a microprocessor and a memory connected to the microprocessor, and each of the plurality of fuel cells includes a temperature detection part configured to detect a temperature of the each of the plurality of fuel cells. The microprocessor is configured to perform the controlling including controlling the plurality of fuel cells such that all of the plurality of fuel cells perform a predetermined warm-up operation when the temperature detected by the temperature detection part of at least one of the plurality of fuel cells is equal to or lower than a predetermined temperature, after a startup of the plurality of fuel cells.

A method for configuring an electrochemical cell system. Embodiments may include a balance of plant functional tester configured to retrieve a fuel cell module (FCM) configuration based on an identifier of a FCM and provide the FCM configuration to a module voltage input/output (MVIO) module of the FCM via a fieldbus message. Embodiments may also include storing the FCM configuration on a memory of the MVIO module and providing it to an electrochemical cell system controller.

A method for controlling power generation of a fuel cell of a vehicle is disclosed. The method may comprise obtaining driving information about an upcoming segment of a road to be driven by the vehicle driving on a current segment of the road. The method may further comprise determining, based on the driving information, a required fuel cell output value of the current segment. Based on the driving information and the required fuel cell output value, the method may comprise determining whether to limit power generation of the fuel cell. The method may further comprise controlling, based on the determining, reduction of power generation of the fuel cell such that a power supply for driving the vehicle in the current segment is provided from a battery of the vehicle.

A fuel cell electric vehicle (FCEV) includes an electric traction motor configured to drive the FCEV and generate power through regenerative braking, a high voltage (HV) battery system including a HV bus and a HV battery configured to power the electric traction motor, and a fuel cell stack (FCS) configured to generate electricity to recharge the HV battery and/or power the electric traction motor. A powertrain control system for preventing over-voltage of the HV bus and HV battery includes a controller having one or more processors configured to control (i) a fuel cell power limit of the FCS, and (ii) a regenerative braking power limit of the electric traction motor. The controller is programmed to measure a voltage of the HV battery system, and selectively limit the fuel cell power limit and/or the regenerative braking power limit when the measure voltage exceeds a predetermined threshold.

An electrochemical system includes fuel cell or electrolyzer modules, and a skid supporting the modules.