A photovoltaic driven electrodialytic lithium extraction system and power distribution control method

Abstract

The present application relates to a photovoltaic driven lithium electrodialysis system and a power distribution control method. The system comprises a photovoltaic power generation module, a liquid supply driving module, a selective lithium extraction module, a sensor network and a central control module; wherein the liquid supply driving module comprises a centrifugal pump and a controlled governor; the selective lithium extraction module comprises an electrodialysis membrane stack and a current-controllable direct-current power supply; all modules are electrically connected through a direct-current bus, and the central control module is communicatively connected with the remaining modules. The power distribution control method provided by the present application is implemented on the central control module. The present application utilizes the controlled governor and the current-controllable direct-current power supply to make the overall system a "flexible dynamic load", combines the electric power distribution control method, establishes a cascade control architecture based on flow and power two-way feedback control, realizes precise energy division and efficiency control, and enables the lithium electrodialysis system to operate safely and efficiently without configuring large-capacity energy storage batteries.

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