DC charging pile charging method based on module maximum current output and shift

Abstract

A direct current charging pile charging method based on the module maximum current output and alternate rest comprises: and calculating the module maximum output current Imax in the required voltage according to the constant power curve of a single charging module, wherein the charging module number required being put into Num=IBCL / Imax, the minimum module communication address in the work modules is recorded through the charging pile, and the charging piles of the other modules stops work for rest. According to the algorithm mentioned above, the modules put into work starts from the next address recorded at the last time when the next charging is started. The direct current charging pile charging method based on the module maximum current output and alternate rest can reduce the standby loss of the charging piles, improve the operation efficiency of the charging piles and reduce the waste of electric power and the cost of users. Less harmonic wave and improved power factors can reduce the pollution in the electric energy, and the module alternate rest improves the service life of the modules and reduces the maintenance cost.

Description

technical field [0001] The invention relates to a method in which the charging module of a DC charging pile operates at the maximum current output and at the same time ensures that the charging module takes turns. Background technique [0002] With the deepening of the global energy crisis, the depletion of oil resources and the increasing harm of air pollution and global temperature rise, governments and automobile companies in various countries generally recognize that energy saving and emission reduction are the main direction of future automobile technology development. The development of electric vehicles will It is the best way to solve these two technical difficulties, and charging piles, as the necessary infrastructure for the development of electric vehicles, have also ushered in explosive development this year. [0003] At present, the DC charging piles on the market have a large standby loss, resulting in a large waste of electric energy when not charging. The roo...

AI Technical Summary

Problems solved by technology

Because the capacity of electric vehicles is not uniform, most DC charging piles are configured according to the maximum charging capacity of electric vehicles in order to meet the fast charging demand. Each charging module is not running at full load when the pile is charging the car

The DC charging modules in the charging power supply industry have the highest efficiency, the smallest harmonics, and the highest power factor at the maximum current output. Therefore, the charging modules working under the condition of partial load are not in good condition at this time. Will shorten the working life of the module

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