Battery Management Device for Grid Stability via Virtual Segmentation
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Solution Overview
Problem
The existing battery energy storage systems for renewable power generation face challenges in efficiently managing and stabilizing power fluctuations across peak and off-peak times, leading to increased installation costs and limited capacity, which affects the stability of the power grid.
Innovation Solution
A battery management system (BMS) that virtually divides the battery capacity into two areas: one for storing energy and another for smoothing energy, using a control circuit to dynamically manage charging and discharging based on real-time power demands, allowing for optimized energy distribution and stabilization without the need for additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional ESS is installed to stabilize power fluctuations, then power grid stability is improved, but installation costs and ESS capacity requirements increase
Solution Approach 1:
The patent segments the battery capacity into two distinct areas: a first area for energy storage and a second area for energy smoothing. This segmentation allows the system to perform both peak load management and power fluctuation stabilization using a single ESS, eliminating the need for additional equipment while maintaining grid reliability.
Solution Approach 2:
The patent makes the single energy storage system universal by enabling it to perform multiple functions: storing energy for peak load periods and smoothing power fluctuations for grid stability. The control circuit dynamically manages both functions within the same ESS, reducing overall system complexity and installation costs.
2Quantity of substance
If battery capacity is increased to handle both storage and smoothing, then energy availability is improved, but system cost increases
Solution Approach 1:
The patent divides the existing battery capacity into two functional areas without increasing total capacity. The first area handles energy storage while the second area handles smoothing operations, allowing the system to maximize utilization of available capacity and avoid unnecessary cost increases.
Solution Approach 2:
The control circuit dynamically adjusts the operation of battery modules between storage and smoothing functions based on real-time grid conditions. This dynamic management optimizes the use of existing capacity, ensuring that the full battery capacity is effectively utilized for both purposes without requiring expansion.
Data Source
AI summary
Provided is a battery managing device that stores surplus power provided from a system via a power managing device, and controls the charging and discharging of a battery formed of multiple battery modules which supply stored power to the system. The battery managing device includes: a switch block that connects the multiple battery modules to the power managing device; a charging circuit that charges the battery by means of the power input from the power managing device; a smoothing circuit that discharges or charges the battery according to the real-time power deficit/surplus state of the system; and a control circuit that controls the operation of the switching block, the charging circuit, and the smoothing circuit.