Tapered Phase Lines for Vehicle Inductive Charging
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Solution Overview
Problem
Existing electromagnetic induction systems for vehicles, such as those described in WO 2010/031595 A2, fail to adequately reduce magnetic field intensity sideways of the generating and receiving devices, posing safety concerns for individuals entering or leaving the vehicle.
Innovation Solution
The system employs a tapered configuration for the phase lines of the receiving and generating devices, where the width of the line arrangement gradually decreases towards the ends, reducing field intensity sideways and compensating for field interference to minimize exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the primary side conductor arrangement produces a magnetic wave for efficient energy transfer, then energy transfer efficiency is improved, but field intensity sideways of the arrangement increases posing safety concerns
Solution Approach 1:
The primary side conductor arrangement is segmented into multiple conductor sections arranged in a specific geometric pattern. This segmentation allows the magnetic fields from individual sections to interfere destructively in sideways directions while constructively interfering in the direction of energy transfer, thus reducing harmful field exposure without compromising productivity.
Solution Approach 2:
The magnetic fields that would normally create harmful sideways exposure are intentionally arranged to interfere destructively in those directions. The same field generation mechanism that provides efficient energy transfer also creates field cancellation in sideways directions, converting the potentially harmful effect into a beneficial field reduction.
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 configuration effectively reduces magnetic field intensity sideways, enhancing safety by minimizing exposure to high field amplitudes near the ends of the devices, while maintaining efficient energy transfer.
Implementation Method 1
a receiving device adapted to receive the magnetic component of an alternating electromagnetic field and to produce an alternating electric current by magnetic induction
Implementation Method 2
The body bundles and redirects the field lines of the magnetic field and therefore reduces the field intensity above the body to nearly zero
Data Source
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AI summary
The invention relates to an arrangement for providing a vehicle (81) with electric energy, wherein the arrangement comprises a receiving device (85) adapted to receive the magnetic component of an alternating electromagnetic field and to produce an alternating electric current by magnetic induction, wherein the receiving device (85) comprises at least one phase line (U, V, W), each phase line (U, V, W) being adapted to carry a phase of the alternating electric current, wherein - the at least one phase line (U, V, W) is/are arranged to form a line arrangement which extends in a longitudinal direction transversely to a flux line direction, in which magnetic flux lines of the electromagnetic field penetrate the line arrangement, so that the line arrangement comprises a first end and a second end, the ends being located at opposite ends of the line arrangement in the longitudinal direction, - a width of the line arrangement, which width can be measured in a width direction extending transversely to the flux line direction and transversely to the longitudinal direction, gradually decreases along the extension of the line arrangement towards the first end and/or towards the second end.