Energy Storage Charging Module with Selective Switching
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Solution Overview
Problem
Existing charging-discharging circuits for energy storage units face inefficiencies in charge and discharge modes, with increased voltage or current leading to circuit heating and reduced efficiency, and the use of batteries in series requiring converters that decrease discharge efficiency.
Innovation Solution
A charging-discharging module comprising two energy storage units and a processing unit that selectively switches between them based on voltage levels to supply power, eliminating the need for additional converters and balancing voltage levels, thereby improving overall system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If voltage or current is increased to improve charging speed, then charging speed is improved, but circuit heating increases and charge efficiency decreases
Solution Approach 1:
The system divides the energy storage function into multiple separate energy storage units instead of using a single unit. This segmentation allows selective operation of individual units based on voltage levels, enabling efficient power delivery without requiring excessive voltage or current from a single source, thus reducing heat generation and improving charge efficiency.
Solution Approach 2:
The system dynamically switches between different energy storage units based on real-time voltage conditions. The processing unit monitors voltage levels and selectively activates appropriate units during charging and discharging operations, optimizing performance and efficiency adaptively rather than using a fixed configuration.
2Loss of energy
If a converter is added to handle series battery configuration, then charge efficiency is improved, but device complexity increases and discharge efficiency decreases
Solution Approach 1:
The invention removes the converter component from the system architecture by adopting a parallel energy storage configuration with selective switching. This extraction of the converter eliminates the associated complexity while maintaining charge efficiency through alternative means (selective unit activation).
Solution Approach 2:
The system segments the power delivery function across multiple independent energy storage units with individual switching control. This segmentation replaces the need for a centralized converter, distributing the control function across multiple simple switches and reducing overall circuit complexity while maintaining efficiency.
Data Source
AI summary
A charging-discharging module of the energy storage unit is provided. The charging-discharging module of the energy storage unit includes a first energy storage unit; a second energy storage unit; a first switching unit electrically connected to a first terminal of the second energy storage unit; a selecting circuit electrically connected to a first terminal of the first energy storage unit and the first switching unit to selectively conduct the first energy storage unit or the second energy storage unit to a system circuit; and a processing unit electrically connected to the first switching unit. A charging and discharging method is also provided.