Reconfigurable Battery Array for Scalable AC Power Synthesis
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Solution Overview
Problem
Current renewable energy systems face bottlenecks in efficiency and practicality, particularly in power management, due to the need for complex control strategies and high output voltage requirements in battery reconfiguration systems, which are not adequately addressed by existing technologies.
Innovation Solution
A three-phase expandable AC system based on battery reconfiguration, featuring a reconfigurable battery array that can connect to a load or grid, generating single-phase or three-phase AC voltages through battery configuration control and current mode switch converters, allowing for scalable power management and bi-directional charging/discharging without requiring complex conversion circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complex control strategies are used to achieve high output voltage in battery reconfiguration systems, then power management efficiency is improved, but device complexity increases
Solution Approach 1:
The battery array is divided into multiple battery modules that can be independently controlled and reconfigured. Each module can be switched in or out of the circuit through switching elements, allowing the system to achieve different output voltages by selecting appropriate combinations of modules, thereby avoiding the need for complex continuous control strategies.
Solution Approach 2:
The battery reconfiguration system dynamically adjusts the connection topology of battery modules based on power management requirements. The switching elements enable real-time reconfiguration of series/parallel connections, allowing the system to adapt output voltage and current characteristics dynamically without complex control algorithms.
2Power
If high output voltage is achieved through battery reconfiguration, then power management capability is improved, but device complexity increases
Solution Approach 1:
The battery array is segmented into multiple standardized modules, each capable of being independently connected in series to achieve different voltage levels. This modular approach simplifies the overall system architecture by breaking down the high-voltage requirement into manageable discrete units that can be easily reconfigured.
Solution Approach 2:
The battery modules are designed with universal interfaces and standardized switching mechanisms that can serve multiple functions: voltage regulation, current control, and safety protection. This multi-functionality reduces the need for separate dedicated components for each function, thereby reducing overall system complexity.
3Power
If conventional AC conversion circuits are used, then voltage conversion is achieved, but component stress and costs increase
Solution Approach 1:
The patent extracts and eliminates the need for conventional AC conversion circuits by implementing direct AC synthesis through the battery reconfiguration architecture. The switching elements directly generate AC waveforms by selectively connecting battery modules in series and parallel configurations, removing the intermediate conversion stages and reducing component stress.
Solution Approach 2:
The system replaces traditional electromagnetic conversion mechanisms with a direct switching-based AC synthesis approach. Instead of using motors, transformers, or complex inverters, the patent uses electronic switching elements to directly synthesize AC signals from DC battery sources, reducing mechanical and electromagnetic component stress.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances energy efficiency and practicality by directly synthesizing AC signals, reducing component stress and costs, and enabling flexible use of second-life batteries, suitable for high-power applications with large voltage and current requirements.
Implementation Method 1
a reconfigurable battery array capable of connecting to a load or being tied to a grid, and having a plurality of battery array modules
Implementation Method 2
generating single-phase or three-phase AC voltages through battery configuration control and current mode switch converters
Data Source
AI summary
A three-phase expandable AC system based on battery reconfiguration and a control method thereof are provided. The system includes a reconfigurable battery array capable of connecting to a load or being tied to a grid, and having a plurality of battery array modules. The reconfigurable battery array may perform charging or discharging with respect to the load or the grid, and may perform one of operations including: generating a single-phase AC voltage corresponding respectively to outputs of the battery array modules; generating a three-phase AC voltage corresponding to three battery array modules selected from the plurality of battery array modules; and generating a plurality of three-phase AC voltages in parallel from the plurality of battery array modules, and merging the three-phase AC voltages in parallel to scale power.