An electric charging system and a method for supplying operating power to a control system of the same
The electric charging system addresses reliability and cost challenges by using a transformer-based power converter with energy storage and auxiliary circuitry for redundancy, ensuring reliable power supply and reduced complexity.
WO2026114506A1PCT designated stage Publication Date: 2026-06-04KEMPOWER OYJ
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- KEMPOWER OYJ
- Filing Date
- 2024-11-29
- Publication Date
- 2026-06-04
Smart Images
Figure EP2024084158_04062026_PF_FP_ABST
Abstract
An electric charging system comprises a charging cable (101) for supplying direct voltage (VDC) to an electric vehicle, a power converter (103) for converting alternating supply voltage (VAC_Grid) to the direct voltage (VDC) of the charging cable, and a control system (105) connected to an energy storage (111) and configured to control the power converter The power converter comprises a transformer (106), a first converter circuitry (107) for converting the alternating supply voltage to alternating voltage (VAC1) of a first winding of the transformer, and a second converter circuitry (109) for converting alternating voltage (VAC2) of a second winding of the transformer to the direct voltage (VDC) of the charging cable. The transformer comprises a third winding (112), and the power converter comprises an auxiliary converter circuitry (113) for converting alternating voltage (VAC3) of the third winding to direct voltage (VDC_aux) of the energy storage.
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