Inductive EV Charging Energy Store with Dynamic Switching
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Solution Overview
Problem
Existing vehicle charging systems are limited by the need for a cable connection and restrict charging options to DC voltage, lacking flexibility and efficiency in charging electric vehicle batteries.
Innovation Solution
The system employs multiple energy storage sections with switching elements connected to a coil for inductive charging, allowing dynamic reconfiguration to match varying voltages and frequencies, enabling wireless charging and direct AC voltage supply without a converter or additional switch apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cable connection is used for charging, then reliable power transmission is achieved, but charging flexibility and user convenience are reduced
Solution Approach 1:
The patent replaces the mechanical cable connection system with an inductive coupling system using magnetic fields. The charging device and energy store use electromagnetic induction to transfer power wirelessly, eliminating the need for physical cable connections while maintaining reliable power transmission through the magnetic coupling mechanism.
2Adaptability or versatility
If DC voltage charging is used, then simple charging circuit design is achieved, but charging option versatility is limited
Solution Approach 1:
The patent employs dynamic switching elements that can reconfigure the energy storage sections between series and parallel connections in real-time. This dynamic reconfiguration allows the charging system to adapt to different voltage levels and charging conditions, enabling versatile charging options while managing circuit complexity through controlled switching operations.
Solution Approach 2:
The energy store is designed with multiple energy storage sections that can be configured in different connections (series/parallel) to accommodate various charging voltages and types. This multi-functional design allows the same charging device to handle different charging scenarios without requiring separate dedicated circuits for each charging mode.
3Adaptability or versatility
If multiple switching elements are added for voltage matching, then charging adaptability is improved, but device complexity increases
Solution Approach 1:
The energy store is divided into multiple independent energy storage sections, each capable of being switched between series and parallel configurations. This segmentation allows for granular control of voltage matching by selectively connecting sections, providing adaptability while distributing the switching complexity across modular units rather than requiring a monolithic complex switching system.
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
This solution allows for flexible and efficient charging of electric vehicle batteries using inductive methods, eliminating the need for cable connections and simplifying the charging circuit, while enabling the use of AC voltage and dynamic voltage matching.
Implementation Method 1
The energy store is connected to a first coil, so that a voltage induced in the first coil is used to charge the energy storage elements of the energy storage modules of the energy store
Data Source
AI summary
An energy store (14a) has at least three energy storage sections (u, v, w) and at least two switching elements. Each energy storage sections (u, v, w) has multiple energy storage modules and each energy storage module has at least one energy storage element that receives and stores energy from an energy source (12). The energy store (14a) is connected to a first coil (50) so that a voltage induced in the first coil (50) is used to charge the energy storage elements. The energy store (14a) is matched to properties of the voltage provided by the first coil (50) by switching the switching elements. As a result, the energy storage modules of an energy storage section (u, v, w) 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 section (u, v, w) is bypassed.