Electric vehicle battery replacing system and method in charging and replacing separation mode

Abstract

The invention relates to an electric vehicle battery replacing system and a method which are in a charging and replacing separation mode. The system comprises a battery replacing station, a centralized charging field, a battery pack data management system and an operation and control center. The battery replacing station is provided with a battery replacing channel, a pallet truck channel and a transportation channel; the pallet truck channel is provided with a pallet truck; the battery replacing channel is arranged to be corresponding to a battery replacing operation area, a power-lack battery pack is unloaded and placed in the pallet truck in the battery replacing operation area, and a full-charge battery pack is loaded to a battery replacing vehicle; and the transportation channel is arranged to be corresponding to a transportation operation area and is used for the pallet truck to transfer the power-lack battery pack and the full-charge battery pack between the battery replacing station and the centralized charging field in the pallet truck. The battery pack data management system comprises a plurality of battery pack monitoring and diagnosing devices, and the operation and control center exchanges data with the battery packs of the battery replacing station, the centralized charging field and the transfer link through a battery pack monitoring and diagnosing device. The system can overcome the defect of charging in a charging and replacing integrated mode, has good practicability and is easy to popularize.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to an electric vehicle battery replacement system and method in a charge-swap separation mode. Background technique [0002] There are basically three energy supplement methods for electric new energy vehicles: charging mode, range-extending mode and battery swapping mode. Among them, the charging mode is to charge the on-board battery pack when the vehicle is stopped; the range extension mode is to recharge the battery pack while the vehicle is running, or use a third-party energy source to increase the mileage of the vehicle; the battery replacement mode is , drive the vehicle to the designated location, remove the battery pack that has lost power, and replace it with a fully charged battery pack. [0003] At present, the energy supplement mode in the battery swap mode is mainly the integrated charging and swapping mode, that is, charging facilities and equipmen...

AI Technical Summary

Problems solved by technology

[0004] First, in the battery replacement structure that integrates charging and replacement, charging dozens of power-deficient battery packs at the same time while the machine is still running, there are potential safety hazards

For example, due to the integration of charging and replacement, the space for installing the battery pack is too closed and narrow, which may easily cause the battery pack to overheat and catch fire.

[0005] Second, in the charging and swapping integrated battery replacement structure, fully charged battery packs and deficient battery packs are mixed together, making it difficult to identify a single pack; at the same time, the complex stacking structure is likely to cause full and deficient battery packs to be replaced Problems such as jamming and collisions occur in the motor

[0006] Third, in the battery swapping structure that integrates charging and swapping, due to the limited space, it is impossible to store too many battery packs, and compared with the battery swapping time, the charging time is long, and it is difficult for the replaced battery packs to be charged in the ideal time. Therefore, it cannot meet the needs of fully charged battery packs for battery replacement operations.

[0007] Fourth, based on the need for customer convenience, charging and swapping stations usually need to be set up in densely populated and building-intensive areas and blocks in urban areas. It is difficult to set up the municipal planning of the power station in the area, and it is difficult to obtain the approval of the urban planning and power department, and the investment cost is high

[0008] In addition, the cost of electric energy required to set up a power station for charging in the above-mentioned areas is high, and it is impossible to use some clean energy such as photovoltaic energy storage, wind power or other economical and cheap new energy power resources such as power plant surplus power, which aggravates the burden on the power company. load

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