Mobile photovoltaic power generation and off-peak electricity energy storage control system for lithium batteries

Abstract

The invention relates to the field of energy storage systems for lithium batteries, in particular to a mobile energy storage control system for lithium batteries. The mobile energy storage control system comprises a solar panel set, a bus unit, an access switching unit, an energy storage chopping unit, a battery equalizer, an energy storage lithium battery set and a system controller, and is characterized in that a channel of control contact points of the access switching unit is sequentially connected with a bidirectional inverter and an electric switching unit, and the electric switching unit is respectively connected with a supply network, an electric load and the system controller; and a system computer in the system controller is respectively connected with the bus unit, the access switching unit, the bidirectional inverter, the energy storage chopping unit, the battery equalizer, a battery temperature detecting unit and the electric switching unit by Profibus-DP (decentralized periphery) and Modbus field buses to form an intelligent network control system. Compared with the prior art, the mobile energy storage control system has the advantages that photovoltaic power generation is integrated with off-peak electricity utilization, photovoltaic power generation is implemented and generated electricity is stored in daytime when sunlight is sufficient, and off-peak electricity is stored at night.

Description

technical field [0001] The invention relates to the field of energy storage systems using lithium batteries as energy storage components, in particular to a mobile photovoltaic power generation and off-peak lithium battery energy storage control system. Background technique [0002] At present, due to the progress of society, the power consumption has increased sharply, and the gradual depletion of non-renewable energy raw materials has led people to enter the stage of developing new energy sources, such as wind power, photovoltaic power generation and other emerging energy sources have been developed rapidly, and some of them have achieved grid-connected use , Large-scale photovoltaic power generation devices using battery energy storage have been on trial; small-scale photovoltaic power generation and battery energy storage devices have been widely used, but they have a fixed location and cannot meet the needs of users' mobile requirements. In addition, lithium iron phosph...

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Problems solved by technology

[0004] In addition, in traditional small-scale photovoltaic power generation devices with battery energy storage, the control system mostly uses analog signal detection and transmission, and its circuit is complex, susceptible to interference, and poor in operation reliability. There is an urgent need for a network intelligent control system with field bus

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