Charging device
The charging device addresses voltage mismatch issues by using a capacitor, inverter, and relays to form boost or buck chopper circuits, ensuring efficient charging across different voltage conditions, reducing size and cost.
WO2026140229A1PCT designated stage Publication Date: 2026-07-02ASTEMO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ASTEMO LTD
- Filing Date
- 2024-12-27
- Publication Date
- 2026-07-02
Smart Images
Figure JP2024046414_02072026_PF_FP_ABST
Abstract
This charging device comprises: a capacitor connected in parallel with a battery; an inverter circuit including a plurality of upper arm switches and lower arm switches; and a rotary electric machine having a plurality of coils respectively electrically connected to the plurality of upper arm switches and lower arm switches and constituting a plurality of phases. The charging device further comprises: a first connection line electrically connecting a positive electrode terminal of an external DC power supply and the high potential side terminal of the upper arm switches; and a second connection line electrically connecting the neutral point of the rotary electric machine and one end of the capacitor.
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