Standby electrical power system of fuel cell for communication

Abstract

The invention relates to a communication fuel cell spare power supply system, which comprises a hydrogen generation and storage unit, a fuel cell unit, a DC/DC unit, an output unit, an electric control unit, a routing inspection unit, a monitoring unit and a communication unit, and is characterized in that: the hydrogen generation and storage unit generates hydrogen by using solar or wind energy and releases the hydrogen by absorbing the heat of the fuel cell unit; the fuel cell unit generates direct current electric energy and heat by the electrochemical reaction of the hydrogen and oxygen; the DC/DC unit adjusts and boosts the direct current electric energy and then supplies the direct current electric energy to the output unit; the output unit supplies power to a load when commercial power fails; the electric control unit acquires various data and sends control information to all units; the routing inspection unit acquires all individual cell voltage values for transmission; the monitoring unit displays various parameters and working states and realizes human-computer interaction; and the communication unit performs short-range and long-range communication and monitoring. The power supply system is clean, high efficient, reliable and applicable to various communication spare power supplies.

Description

technical field [0001] The invention belongs to a fuel cell power supply device, in particular to a communication fuel cell backup power supply system. Background technique [0002] With the general improvement of people's living standards and the rapid development of communication technology, communication power supplies have been widely used. The traditional communication power supply mainly converts the mains power to output a DC power supply suitable for communication equipment. The backup power supply is usually a bulky and heavy battery pack. Due to the low efficiency and short service life of the battery, it cannot be recycled and reused. , A series of disadvantages such as serious environmental pollution after being discarded, its use and promotion have been greatly restricted. In addition, once the mains power supply system fails, it will take a long time to repair it, especially when the mains power supply system is severely damaged by natural disasters (such as t...

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Problems solved by technology

[0004] At present, there are no relevant reports and patent authorizations on commercialized fuel cell backup power for communication in China. Most of the multi-machines are in the laboratory research stage, and they all use a single module to achieve an output power of 1-2KW, and do not support multi-module backup and thermal power. The special use requirements of communication power supplies such as plugging and unplugging, long-term low-temperature storage and uninterrupted work cannot be guaranteed, so commercialization is still difficult; the hydrogen source of the fuel cell backup power supply for communication base stations in foreign countries comes from processed Existing hydrogen is refilled and transported in high-pressure gas cylinders. The working time is limited by the capacity of the gas cylinder, so its sustainable working time is very limited; in addition, the heat generated by the electrochemical reaction between hydrogen and oxygen is directly dissipated and not fully utilized , so the hydrogen utilization rate and energy conversion efficiency are obviously low; at the same time, the number of fuel cell modules is too large, bulky and heavy, the low-temperature storage capacity is poor, the cold start time is too long, and the lack of good moisturizing ability; its monitoring function is simple, not It is beneficial to the observation and maintenance of the system as a whole, so the service life of the fuel cell is not high; in addition, the system does not have the function of remote monitoring, and it is necessary to dispatch staff to carry out on-site maintenance from time to time, so its maintenance cost is too high. The high cost is not conducive to the promotion and industrialization of the system

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