Wireless Charging for Electric mobility

Detailed overview of innovation with sample startups and prominent university research


What it is

Wireless charging for electric vehicles involves transferring electrical energy to the vehicle’s battery without the use of physical cables or connectors. This technology relies on the principles of electromagnetic induction to transmit power wirelessly from a charging pad on the ground to a receiver unit on the underside of the vehicle.

Impact on climate action

Wireless charging for electric mobility streamlines the charging process, reducing energy waste and carbon emissions. By eliminating the need for physical connections, it enhances user convenience, encouraging broader adoption of electric vehicles. This innovation accelerates the transition to sustainable transportation, significantly impacting climate action goals positively.

Underlying
Technology

  • Electromagnetic Induction: The core principle behind wireless charging is electromagnetic induction. An alternating current flowing through a coil in the charging pad creates a fluctuating magnetic field. When the receiver coil on the vehicle is placed within this magnetic field, an electric current is induced in the receiver coil, which then charges the battery.
  • Resonant Inductive Coupling: To improve efficiency and range, most wireless charging systems utilize resonant inductive coupling. This technique involves tuning the charging and receiving coils to the same resonant frequency, allowing for more efficient energy transfer over greater distances.
  • Alignment and Positioning: Accurate alignment between the charging pad and the receiver is crucial for efficient power transfer. Wireless charging systems incorporate positioning systems, such as magnetic guidance or ultrasonic sensors, to ensure optimal alignment.
  • Safety Features: Wireless charging systems are designed with multiple safety features to prevent electromagnetic interference, overcharging, and to detect foreign objects that could disrupt charging.

TRL : 6-7 (Moving towards 8)


Prominent Innovation themes

  • Dynamic Wireless Charging: This technology allows for charging while the vehicle is in motion, eliminating range anxiety and enabling continuous charging on specially equipped roads.
  • High-Power Wireless Charging: Research is focusing on developing high-power wireless charging systems that can deliver energy at rates comparable to wired fast chargers, reducing charging times.
  • Vehicle-to-Grid (V2G) Integration: Wireless charging systems can be integrated with V2G technology, allowing EVs to not only draw power from the grid but also feed energy back into the grid, contributing to grid stability and supporting renewable energy integration.

Other Innovation Subthemes

  • Electromagnetic Induction Charging
  • Resonant Inductive Coupling Systems
  • Precision Alignment Technology
  • Safety-enhanced Wireless Charging
  • Dynamic Charging for Moving Vehicles
  • High-Power Wireless Charging Solutions
  • Vehicle-to-Grid Integration
  • Wireless Charging Road Infrastructure
  • Smart City Wireless Charging Networks
  • Wireless Charging for Commercial Fleets
  • Partnership with Automotive Giants
  • Heavy-Duty Vehicle Wireless Charging
  • Advancements in Resonant Coupling Efficiency
  • Mobile Energy Storage Integration
  • High-Efficiency Wireless Charging Protocols
  • Wireless Charging for Public Transportation

Related Innovations

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Sample Global Startups and Companies

  1. WiTricity:
    • Technology Focus: WiTricity specializes in wireless charging technology, particularly for electric vehicles (EVs). Their technology enables charging EVs without the need for cables, using magnetic resonance or inductive charging methods.
    • Uniqueness: WiTricity stands out for its expertise in long-range wireless charging, allowing vehicles to charge while parked or even while in motion. Their technology is highly efficient and ensures safe charging without physical contact.
    • End-User Segments: Their target segments include EV manufacturers, fleet operators, and infrastructure providers looking to offer convenient and efficient charging solutions for electric vehicles in various settings, including homes, workplaces, and public spaces.
  2. Momentum Dynamics:
    • Technology Focus: Momentum Dynamics specializes in wireless charging solutions for electric vehicles, primarily focusing on dynamic charging systems for commercial and public transportation fleets. Their technology enables charging while vehicles are in motion, such as buses or trucks on designated routes.
    • Uniqueness: Momentum Dynamics is unique in its focus on dynamic wireless charging, allowing for continuous operation of electric vehicles without the need for frequent stops for charging. This can significantly extend the range and operational efficiency of electric fleets.
    • End-User Segments: Their target segments include public transportation agencies, logistics companies, and municipalities seeking to electrify their fleets while maintaining operational flexibility and efficiency.
  3. EVE:
    • Technology Focus: EVE is likely focused on wireless charging solutions for electric vehicles, although specific details may vary. They might offer innovative charging infrastructure or services tailored to specific user needs.
    • Uniqueness: EVE may differentiate itself through unique features or approaches to wireless charging, such as integration with renewable energy sources, smart grid capabilities, or user-friendly design.
    • End-User Segments: Their target segments could encompass a wide range of stakeholders in the electric mobility ecosystem, including EV manufacturers, charging network operators, utilities, and end-users such as individual EV owners or commercial fleet operators.

Sample Research At Top-Tier Universities

  1. University of Auckland:
    • Technology Enhancements: Researchers at the University of Auckland are working on enhancing wireless charging technology for electric mobility by improving efficiency and reliability. They are developing advanced electromagnetic field modeling techniques to optimize the design of wireless charging systems for electric vehicles (EVs).
    • Uniqueness of Research: The University of Auckland’s research focuses on addressing the challenges associated with wireless charging, such as energy loss and alignment issues. They are exploring innovative approaches, including dynamic charging systems and adaptive control algorithms, to improve the performance and usability of wireless charging technology.
    • End-use Applications: The research at the University of Auckland has implications for the widespread adoption of electric mobility, particularly in urban areas where infrastructure constraints limit the deployment of traditional charging stations. Wireless charging technology can enable seamless charging experiences for EV owners, enhancing convenience and encouraging the transition to sustainable transportation solutions.
  2. Oak Ridge National Laboratory (ORNL):
    • Technology Enhancements: ORNL researchers are leading advancements in wireless charging technology for electric mobility by developing high-power charging systems and novel charging protocols. They are leveraging their expertise in power electronics and materials science to overcome technical barriers and improve the efficiency of wireless charging systems.
    • Uniqueness of Research: ORNL’s research integrates principles of energy storage and distribution into the design of wireless charging infrastructure for electric mobility. They are exploring innovative battery technologies, such as solid-state batteries and lithium-sulfur batteries, to enable faster charging rates and longer driving ranges for EVs.
    • End-use Applications: The research at ORNL has implications for various sectors, including automotive, transportation, and renewable energy industries. By enabling wireless charging for electric mobility, ORNL aims to accelerate the adoption of EVs and reduce dependence on fossil fuels, leading to cleaner air and lower greenhouse gas emissions.
  3. Korea Advanced Institute of Science and Technology (KAIST):
    • Technology Enhancements: KAIST researchers are at the forefront of wireless charging technology for electric mobility, focusing on improving the efficiency and scalability of charging infrastructure. They are developing innovative coil designs and resonance-based charging systems to achieve higher power transfer rates and greater charging distances.
    • Uniqueness of Research: KAIST’s research emphasizes the integration of wireless charging technology into existing infrastructure, such as roads and parking lots, to create seamless charging experiences for EV owners. They are exploring smart grid solutions and vehicle-to-grid (V2G) technologies to optimize energy management and reduce grid congestion.
    • End-use Applications: The research at KAIST has implications for urban planning, transportation policy, and energy sustainability. By deploying wireless charging infrastructure for electric mobility, KAIST aims to transform cities into cleaner, greener, and more livable environments while promoting the widespread adoption of EVs as a viable alternative to conventional vehicles.

commercial_img Commercial Implementation

Wireless charging is already being commercially implemented in a limited capacity. Several automotive manufacturers, including BMW and Genesis, offer wireless charging as an option on certain EV models. Additionally, wireless charging systems are being deployed in pilot projects for public transportation and commercial fleets. The wider adoption of wireless charging is anticipated to grow in the coming years as technology matures and infrastructure development progresses.



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