An off-grid mobile fast charging system and its management method

Abstract

The invention relates to an off-network removable fast charging system and a management method. The off-network removable fast charging system comprises a removable container fast charging unit and acentralized energy storage and dispatching management station, wherein the removable container fast charging unit comprises a removable container, a battery energy storage pile, a multi-line intelligent high-voltage case (MLiC), and an on-board fast charger are arranged in the removable container, and the off-network removable container fast charging unit adopts the battery energy storage pile torely on the built-in multi-line intelligent high-voltage case (MLiC) and the on-board fast charger of the removable container in the absence of grid power supply and other external facility supporting, so that the fast charging services can be independently provided for a plurality of new energy vehicles; and the centralized energy storage and dispatching management station provides grid fast charging or renewable energy recharging for the off-network movable container fast charging unit. According to the off-network removable fast charging system, the off-network removable container fast charging unit is not limited by distribution license and grid capacity limiting, on the basis of giving full play to a decommissioned battery standard case for conducting rapid charging of many electric vehicles, the large-scale commercial distribution of fast charging stations is promoted, the charging cost of the electric vehicles is effectively reduced, and the charging convenience is improved.

Description

technical field [0001] The invention relates to the field of new energy electric vehicles, in particular to fast charging of electric vehicles, cascade utilization of decommissioned batteries, development and operation management modes of off-grid charging systems, and the like. Background technique [0002] At present, the development of new energy vehicles is restricted by the lack of fast-charging facilities, and the construction of fast-charging stations is not only restricted by the mature power grid capacity in urban areas and the power distribution system, but also by the infrastructure of charging stations, including the cost of construction land. Constraints and constraints on fixed construction investment have attracted more and more attention. Due to the large construction area and high construction and maintenance costs of the existing fast charging stations, it is difficult to build a large number of them in the urban area. Occasionally, several fast charging st...

AI Technical Summary

Problems solved by technology

[0005] The battery energy storage device in the above two invention patent applications uses a large number of DC / DC converters to realize the static parallel connection between the battery packs, and then connects to the slow charging charging pile through the AC / DC converter, which not only requires high construction costs, but also has high operating costs. The cost is high, and the reliability of high-power AC / DC and DC / DC is poor, and it is not suitable for sustainable and large-scale commercial operation

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