Dynamic Energy Store Topology for Multi-Source Charging
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Solution Overview
Problem
Existing vehicle battery charging systems are limited by the use of DC voltage as the sole charging option, restricting flexibility and independence from specific energy sources.
Innovation Solution
A method and apparatus that allow energy storage modules to be dynamically reconfigured by switching elements to connect in parallel, series, or bypass, enabling charging with either DC or AC voltage sources, making the energy store independent of specific energy sources by matching it to the available energy source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DC voltage source is used as the only charging option, then the charging system is simple, but the adaptability to different energy sources is limited
Solution Approach 1:
The patent implements dynamic reconfiguration of energy storage modules through switching elements that can change connection topologies in real-time. The system transitions from static DC-only charging to dynamic multi-mode charging (DC, AC single-phase, AC three-phase) by actively switching between series and parallel connections of modules, allowing adaptation to different energy sources while managing complexity through controlled dynamic behavior
Solution Approach 2:
The energy storage system is designed with universal charging capability by incorporating switching elements that enable the same hardware to accept multiple types of energy sources (DC voltage sources, AC single-phase sources, AC three-phase sources). The switching network allows the system to function as different electrical configurations (series-connected strings, parallel-connected strings, or combinations) to match various charging standards and energy sources
2Adaptability or versatility
If energy storage modules are fixed in series connection, then the voltage matching is simple, but the flexibility to match different energy sources is reduced
Solution Approach 1:
The patent divides the energy storage system into modular energy storage modules that can be independently controlled. Each module can be switched between series and parallel connections, allowing the system to segment and reconfigure its voltage output. This segmentation enables flexible voltage matching with different energy sources (e.g., high voltage for DC fast charging, lower voltage for AC charging) while keeping the switching network manageable through modular architecture
Solution Approach 2:
The switching network dynamically reconfigures the connection topology of energy storage modules based on the detected energy source type and voltage requirements. The system transitions from fixed series connection to dynamic reconfiguration, adjusting the number of series/parallel connections in real-time to match the electrical characteristics of the connected energy source, thereby achieving flexibility without excessive complexity through intelligent control
3Adaptability or versatility
If the energy store is designed for specific energy source compatibility, then the design is straightforward, but the independence from specific energy sources is lost
Solution Approach 1:
The charging system incorporates automatic detection and self-adjustment capabilities that allow it to independently identify the connected energy source type (DC, AC single-phase, AC three-phase) and automatically configure the appropriate connection topology without user intervention. The control system autonomously manages the switching elements to match the energy source, providing energy source independence while maintaining ease of operation through automated processes
Solution Approach 2:
The energy storage system is designed with universal charging interfaces and control logic that enable it to accept and adapt to multiple energy source types. The system incorporates multiple charging ports and switching configurations that allow it to function with DC voltage sources, AC single-phase sources, and AC three-phase sources, achieving independence from specific energy sources while maintaining operational simplicity through integrated multi-functionality
Data Source
AI summary
A method for charging an energy store that has at least three energy storage strings each having plural energy storage modules. The energy storage modules have at least one energy storage element that receives and stores energy from an energy source and at least two switching elements. The energy store is connected to an energy source that provides a charging voltage and to an electric machine, and the energy storage modules are supplied with energy by the energy source. A DC voltage source and/or an AC voltage source are used in a selectable manner as energy source and the energy store is matched to properties of the selected energy source by switching the switching elements. Thus, the energy storage modules of a string are connected in parallel and/or in series with one another and/or at least one energy storage module of at least one energy storage string is bypassed.