Regulating device and control method for balance of demand side battery pack

Abstract

The invention relates to the field of intelligent control of battery packs. An embodiment of the invention discloses a regulating device and a control method for balance of a demand side battery pack. According to the regulating device and the control method for balance of the demand side battery pack, a demand side battery pack balance control system structure and control module functions, a battery pack n-order resistance-capacitance equivalent circuit model and a parameter battery pack balance control method and an interactive process of a demand response (DR) communication interface and a communication power supply control cabinet control module are contained. A communication battery control system is composed of a multi-channel selecting switch, a battery pack monitoring module and a control module. A battery pack participation demand response incidents are finished in a coordinated mode through the communication battery control system, a communication device end, a communication power system and a power grid demand response server. Battery single body difference detection and control in the battery pack are controlled through the multi-channel selecting switch, and the communication battery pack which is in a floating charge state for a long term is controlled to charge and discharge electricity so as to participate in power demand response. The control method is characterized in that the communication battery control system balances charge and discharge of the battery pack according to demand response signals on the premise of considering service life of the battery pack so as to participate in the demand response incidents and assist a power grid in achieving demand side management.

Description

technical field [0001] The invention relates to the field of intelligent control of battery packs, and more specifically, relates to a demand-side battery pack balance adjustment device and a control method. Background technique [0002] With the acceleration of industrial development and the tense trend of power supply, relevant power departments in various places are starting to formulate relevant technical and economic means to encourage users on the power demand side to cut peaks and fill valleys independently. From the point of view of the power consumption department, making more use of off-peak power can effectively reduce the maintenance cost of the system. Under the condition of having a grid-connected inverter device, it can further transmit power to the grid and obtain benefits. From the perspective of the power management department, peak shaving and valley filling can reduce the installed capacity required by the peak load. As an energy storage device, battery ...

AI Technical Summary

Problems solved by technology

If the battery pack is in the floating state for a long time, it will lead to the passivation of the anode plate of the battery and the sulfation of the active material inside the plate, and the internal resistance of the battery will also increase accordingly, resulting in a decrease in capacity

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