ISO 19363:2020

Overview - ISO 19363:2020 (MF‑WPT for EVs)

ISO 19363:2020 specifies requirements for the on‑board equipment of electrically propelled road vehicles that use magnetic field wireless power transfer (MF‑WPT) for traction battery charging. Intended for passenger cars and light‑duty vehicles, the standard focuses on safety, interoperability and performance of the EV power circuit (EVPC), secondary (on‑board) devices and EV power electronics that enable wireless charging. Charging in motion and bi‑directional power transfer are explicitly not covered in this edition.

Key technical topics and requirements

• Safety requirements: protection against unintended power transfer, electric shock, thermal incidents, overheating and electromagnetic exposure to people. Special protection areas and requirements to safeguard AIMDs (active implantable medical devices) are included.
• Power transfer and efficiency: limits and performance expectations for transferred power, rated output power, output voltage behavior (ripple/overshoot) and minimum power transfer efficiency.
• Geometrical operating space and alignment: definitions for alignment, alignment tolerance area and centre alignment point to ensure reliable coupling between primary (off‑board) and secondary (on‑board) devices.
• Ground clearance and mechanical constraints: requirements for secondary device ground clearance and related mechanical installation considerations.
• Interoperability & functionality: on‑board EV device requirements to operate with supply devices that comply with the IEC 61980 series, promoting manufacturer‑independent compatibility.
• EMC and communication: electromagnetic compatibility limits and communication interfaces relevant to MF‑WPT operations (references IEC 61980‑2/3 where applicable).
• Testing and conformance: detailed test procedures, reference supply power circuits (Annex A/B for ≤3.7 kW and ≤11.1 kW) and guidance for demonstrating conformance.

Practical applications - who uses ISO 19363:2020

• Automotive OEMs developing EVs with integrated wireless charging systems.
• Tier‑1 and Tier‑2 suppliers of secondary coils, EV power electronics and mechanical modules.
• Infrastructure providers and charging network operators planning public wireless charging pads and supply devices.
• Test labs and certification bodies performing compliance and interoperability testing for MF‑WPT EV components.
• Regulators and safety engineers assessing electromagnetic exposure, EMC and vehicle electrical safety for wireless charging installations.

Related standards

• IEC 61980 series (off‑board WPT supply device requirements)
• IEC 61980‑2 / IEC 61980‑3 (communication and magnetic field power transfer specifics)
• SAE J2954 (U.S. wireless charging standard)
• ICNIRP 2010 (guidelines for exposure to time‑varying fields)
• ISO 6469‑3, CISPR 11, IEC 60664 (electrical safety, EMC, insulation coordination)

ISO 19363:2020 is essential for ensuring safe, interoperable and efficient implementation of wireless charging in modern EVs and public charging infrastructure. Keywords: ISO 19363:2020, MF‑WPT, magnetic field wireless power transfer, wireless charging, electric vehicle, EV power electronics, interoperability, safety requirements, IEC 61980.