Inductive Charging Hood with Ferrite Plate for Water Protection
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Solution Overview
Problem
Existing inductive charging systems for energy storage vehicles lack effective protection against water and liquid intrusion, and they require a galvanic connection for charging, which can be unsafe and limit their use in different climatic zones.
Innovation Solution
The system incorporates an electronic circuit housed within a watertight hood on the underside of a cover, with a ferrite plate and primary winding for inductive coupling, allowing for safe, non-contact charging using alternating current, and utilizing a T-node for parallel supply from a public network, ensuring efficient energy transfer and protection against water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a galvanic connection is used for charging, then charging can be performed, but safety is reduced and use in different climatic zones is limited
Solution Approach 1:
The patent replaces the mechanical galvanic connection system with an inductive charging system using electromagnetic fields. The charging station includes a primary winding that generates an alternating magnetic field to induce current in the vehicle's secondary winding, eliminating the need for physical plug connections and improving both safety and adaptability to different environments
Solution Approach 2:
The patent introduces electromagnetic field as an intermediary between the charging station and the vehicle's energy storage device. The alternating current in the primary winding creates a magnetic field that couples with the secondary winding through the hood, enabling wireless energy transfer without direct electrical contact
2Ease of operation
If electronic circuitry is exposed for charging, then charging functionality is accessible, but protection against water and liquid intrusion is lost
Solution Approach 1:
The patent uses a hood made of non-conductive material that acts as a protective shell enclosing the electronic circuitry. The hood includes an opening that allows inductive coupling while maintaining protection against water and liquid intrusion, balancing accessibility with environmental protection
Solution Approach 2:
The hood serves as an intermediary structure that allows electromagnetic field penetration while blocking water and liquid intrusion. The non-conductive material and geometric design of the hood enable the magnetic field to pass through for charging while preventing direct contact between liquids and electronic components
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 provides reliable and safe inductive charging by preventing water contact with electronic components, enabling operation in various climatic conditions and allowing for efficient high-power transmission without a galvanic connection, thus enhancing safety and usability.
Implementation Method 1
charging can be carried out without a galvanic connection... the cover has a ferrite plate and a primary winding provided on this plate... inductive coupling to the secondary coil of the consumer is improved
Implementation Method 2
the vehicle has a secondary winding to which such a capacitance is connected in series or in parallel in such a way that the associated resonant frequency essentially corresponds to the frequency of the alternating current impressed on the primary winding
Data Source
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AI summary
The invention relates to a system for inductively charging a vehicle having an energy accumulator and to a charging station. According to the invention, an electronic circuit is provided in the interior of a hood, the opening of which is arranged on the bottom side of the hood.