In-Motion EV Wireless Charging via Vehicle-to-Vehicle Synchronization

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Solution Overview

Problem

Existing electric vehicle charging systems face challenges such as lengthy charging times and spatial limitations of wireless charging infrastructure, particularly at intersections, which complicates maintenance and accessibility.

Innovation Solution

An in-motion wireless charging system that enables inter-vehicle wireless charging by using a wireless charging vehicle to match dynamic driving tasks with a target vehicle through V2X communication, adjusting speed, braking, and steering, and synchronizing movements to efficiently charge the battery while en route to a destination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless power transmission pads are buried in the road surface at intersections to enable wireless charging for multiple electric vehicles, then wireless charging availability is improved, but maintenance difficulty increases

Engineering Contradiction:

Improvewireless charging availabilityVSAvoidmaintenance difficulty

Core Design Contradiction:

Adaptability or versatilityVSEase of repair

Solution Approach 1:

The system divides the wireless charging function into mobile individual charging vehicles instead of having all charging pads fixed at intersections. Each charging vehicle operates independently and can be maintained separately, avoiding the complexity of maintaining multiple buried pads at intersection locations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The charging system transitions from static buried pads to dynamic mobile charging vehicles that move to provide charging services. This allows the charging infrastructure to be flexible and adaptable without requiring fixed installations at multiple intersection points, thereby reducing maintenance complexity.

Inventive Principle:

Principle #15Dynamics

2Reliability

If electric vehicles are connected to separate charging stations or dedicated charging plugs to perform charging, then charging reliability is improved, but charging time increases and spatial limitations occur

Engineering Contradiction:

Improvecharging reliabilityVSAvoidcharging time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The mobile charging vehicle autonomously navigates to the target vehicle and establishes charging connection without requiring the target vehicle to stop or the driver to intervene. The charging system performs self-service by automatically detecting, approaching, and initiating charging, thereby maintaining reliability while reducing charging time and eliminating spatial limitations.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The mobile charging vehicle can position itself and prepare for charging before the target vehicle needs power. The system performs preliminary navigation and positioning actions, so when charging is initiated, the process begins immediately without waiting for vehicle stopping or connection setup, reducing overall charging time.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If conventional wireless charging requires the vehicle to be positioned on a power transmitting pad, then wireless charging functionality is achieved, but spatial limitations and accessibility issues occur

Engineering Contradiction:

Improvewireless charging functionalityVSAvoidaccessibility

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Instead of requiring the target vehicle to stop and position itself on a fixed charging pad, the system inverts the approach by having the mobile charging vehicle actively navigate to and position itself relative to the moving target vehicle. This eliminates the need for the target vehicle to stop or find specific charging locations, thereby improving accessibility and ease of operation while maintaining wireless charging functionality.

Inventive Principle:

Principle #13The other way round (Inversion)

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

Facilitates safe and efficient wireless charging of in-motion vehicles, allowing them to reach desired destinations or charging stations without the need for traditional charging stations, enhancing mobility and convenience.

Implementation Method 1

charging a vehicle battery by delivering electrical energy to a wireless charging receiving pad of the vehicle through magnetic resonance induction

Methodology Applied

Scientific EffectMagnetic resonance induction: Electromagnetic Induction

Data Source

PatentUS20250340150A1In-motion wireless charging system for electric vehicle and control method thereof

Publication Date: 2025.11.06 HYUNDAI MOBIS CO LTD

AI summary

An in-motion wireless charging system and a method therefor are provided. The system includes: a receiver to receive an in-motion wireless charging request signal including position information from a target vehicle; a controller to control movement of a wireless charging vehicle in relation to a position of the target vehicle by using the position information of the target vehicle, and perform an inter-vehicle link with the target vehicle to match a dynamic driving task (DDT) of the wireless charging vehicle with the target vehicle in the position of the target vehicle; and a charger positioned in the wireless charging vehicle and to wirelessly charge a battery of the target vehicle.