An energy flow control apparatus based on a fuel cell hybrid power supply

Abstract

The invention provides an energy flow control device based on a fuel cell hybrid power supply, belonging to the technical field of fuel cells. The energy flow control device based on the fuel cell hybrid power supply comprises a fuel cell module and a storage cell module, wherein the fuel cell module is provided with a power control part, and the storage cell module is provided with a battery capacity part. The power control element reduces the output power when the real-time capacity is greater than the first capacity, the power control means increases the output power when the real-time capacity is smaller than the second capacity while supplying power to the load and charging the storage battery module so that the real-time capacity detected by the battery capacity means is a preset capacity, Ensure the fuel cell module tends to stable operation, prolong the life of the fuel cell module, optimize the state of the storage cell module, make it avoid overshoot and overdischarge, work in a better state, combine the respective advantages of the fuel cell module and the storage cell module, improve the reliability of the system.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and relates to an energy flow control device based on a fuel cell hybrid power supply. Background technique [0002] Fuel cells have many advantages as a power supply system, but their dynamic response has a certain time lag. When the load power fluctuates, the output power of the fuel cell needs to be adjusted for a period of time to adapt to the load change. Therefore, an auxiliary power supply device with high energy density and power density is required to complement the fuel cell to jointly supply power to the load and improve energy utilization while ensuring operational performance. The fuel cell has the advantages of long power supply time and high efficiency; the auxiliary power supply device has the characteristics of fast response and easy energy feedback to make up for the defect of the fuel cell's slow dynamic response. [0003] In the actual application environment of the fuel ...

AI Technical Summary

Problems solved by technology

These two energy sources have different power variation gradients, continuous charging and discharging time characteristics and constraints, and because of the violent output power fluctuations, the DC / DC and other power devices in the power system work in a non-stationary state for a long time, and the system operating point is at In the midst of dynamic changes, it will be a challenge to ensure that the hybrid power system can still operate with high quality and stability in harsh working environments

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