Management method of multi-module energy storage power supply

Abstract

The invention discloses a management method for a multi-module energy storage power supply, and the method comprises the steps: in an independent working mode, an energy storage power supply host independently outputs outwards, and an input / output control module in a battery module closes an input / output channel; according to the general working mode, when correct communication connection is established between the energy storage power supply host and the battery modules, the battery modules feed back voltage and residual capacity parameter information of the battery units to the main control module of the energy storage power supply host through the communication module, and the main control module selects the battery module with the highest voltage by comparing voltage values and sends the selected battery module with the highest voltage to the energy storage power supply host. And after the selected battery module receives the signal, an output channel is opened through the input and output control module, so that the battery unit is communicated with the main battery unit and provides power for the main battery unit, and the input and output channels of the other unselected battery modules are continuously kept closed. Therefore, the normal work of the energy storage power supply host is ensured, and the use safety is ensured.

Description

Technical field: [0001] The invention relates to the technical field of energy storage power supply products, in particular to a management method of a multi-module energy storage power supply. Background technique: [0002] Portable energy storage power supply, also called portable outdoor power supply, is a backup power supply or emergency power supply whose weight usually does not exceed 20kg. Lithium-ion batteries are generally used as energy storage components, and AC or DC is used for input charging (such as AC 220V, vehicle 12V, etc.), and the output is AC or DC (such as AC 220V, DC 12V, DC 5V, etc.). [0003] Portable energy storage power sources are generally used as backup backup power sources for outdoor travel and earthquake and disaster prevention. When users play and work outdoors, the portable energy storage power supply can charge and illuminate electronic devices such as mobile phones. When it is not in use, it can be charged by the mains or vehicle power ...

AI Technical Summary

Problems solved by technology

However, there is currently no perfect management method for connecting multiple battery modules to energy storage power sources, and the existing battery management system (BMS) cannot cope with this situation.

Since the current voltage of the energy storage power supply and the battery unit in the battery module cannot be guaranteed to be consistent, if the energy storage power supply is directly connected in parallel with the battery module, it may cause circulation between battery units of different voltages, burn the battery, or even cause a fire , explosion and other dangerous situations

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