Contactless Charging Device Wired Station Interface
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Solution Overview
Problem
Existing contactless charging systems for electric vehicles are expensive and inflexible, requiring both wired and wireless charging options for quick and convenient charging, which is economically unfeasible for users.
Innovation Solution
A contactless charging device that can be coupled to a conventional wall charging station for power supply, eliminating unnecessary components and allowing for both wired and wireless charging options, enabling economical and flexible charging by using a standardized communication protocol and converter devices for efficient power conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a user installs both wired DC charging and contactless charging systems at home, then both quick charging and convenient charging options are available, but the total cost becomes very expensive
Solution Approach 1:
The contactless charging device is designed to serve multiple functions: it can charge vehicles directly via contactless power transfer, and simultaneously function as a power source for other contactless charging devices through its interface. This multi-functionality eliminates the need for separate wired DC charging infrastructure, reducing overall system cost while maintaining both quick and convenient charging options.
Solution Approach 2:
The patent combines the contactless charging device with an interface that enables it to connect to and draw power from wired charging stations. This merging of contactless charging capability with wired charging infrastructure allows the system to leverage existing wall charging stations, avoiding duplicate installations and reducing total system cost.
2Power
If a contactless charging device is directly connected to the power grid, then it can provide full power capacity, but it requires numerous protective components and grid interface devices increasing size and cost
Solution Approach 1:
The patent extracts the protective devices and grid interface components (fault-current circuit breakers, contactors, relays, grid filters, excess voltage protective devices) from the contactless charging device and relocates them to the wired charging station. This extraction reduces the complexity and cost of the contactless charging device while maintaining full power capacity through the station's existing protection infrastructure.
Solution Approach 2:
The wired charging station serves as an intermediary between the power grid and the contactless charging device. It provides the necessary protection and power conversion, allowing the contactless charging device to operate at full capacity without requiring its own complete set of protective components. The station acts as a mediator that handles grid interface requirements.
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 solution provides a cost-effective and flexible charging system that allows users to choose between quick wired charging and convenient contactless charging, reducing the need for multiple systems and enhancing user convenience while minimizing component costs.
Implementation Method 1
contactless charging options, for example inductive charging systems
Implementation Method 2
converter devices for efficient power conversion
Data Source
AI summary
A contactless charging device for contactlessly charging an energy accumulator of a motor vehicle, wherein the contactless charging device has an interface for coupling the contactless charging device to a power source, wherein the interface is designed for communicative coupling and for wired electrical coupling to a charging station, wherein the charging station is designed for the wired charging of the energy accumulator.