Distributed type self-cooling electricity-storage charging pile and charging method thereof

Abstract

The invention provides a distributed type self-cooling electricity-storage charging pile and a charging method thereof. The distributed type self-cooling electricity-storage charging pile comprises aflow battery stack, a current converter, a flow battery electrolyte circulating pipeline flowing through the current converter, and other structures. In the circulating process of electrolyte in the flow battery, the electrolyte flows through the interior of the current converter to effectively cool the current converter under the situation that extra work doing is not needed, waste heat generatedduring operation of the current converter can preheat the electrolyte to improve the operation efficiency of the battery, and cooperative and complementary operation of the current converter and theflow battery are achieved under the premise that extra work doing is not needed; meanwhile, a charging device can overall play the role in power grid peak shaving when charging is conducted through apower grid at night or at idle hours, and thus the charging cost is reduced; direct charging can further be achieved through renewable energy sources such as solar energy and wind energy which have the problems of intermittency and volatility, and thus the difficulty of grid connection of the renewable energy sources is reduced; and meanwhile, the electrolyte after charging can further be directlyreplaced to complete the quick charging process, and charging modes are more diverse and free.

Description

technical field [0001] The invention relates to a charging device and a charging method, in particular to a distributed self-cooling electric storage charging pile and a charging method thereof. Background technique [0002] With the continuous development of new energy utilization technology, new energy vehicles have ushered in great development in the world, especially in China. With the dual support of technology and policy, my country's new energy vehicles, especially pure electric vehicles, continue to grow at a rate of nearly 300,000 per year. The emergence of a large number of pure electric vehicles means that my country's demand for charging piles and charging and swapping stations is increasing. At present, the ratio of domestic charging facilities to new energy vehicles is maintained at about 1:4, which is far from the standardized 1:1. Far. According to the plan, it is estimated that by 2020, the number of centralized charging and swapping stations will increase ...

AI Technical Summary

Problems solved by technology

[0005] However, the energy efficiency of the flow battery is relatively low during the cycle. Experiments have proved that an appropriate increase in temperature can improve the working efficiency of the battery. At the same time, the heat dissipation technology of the charging pile has always affected the efficient, stable and long-term operation of the charging device.

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