Charging method with pre-charging of an electric vehicle equipped with a bidirectional charging system
The bidirectional charging system addresses inrush current damage by pre-charging the DC bus capacitor in discharge mode, simplifying the charging system and maintaining EMC efficiency without pre-charge resistors and relays.
FR3170140A1Pending Publication Date: 2026-06-19AMPERE SAS
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- AMPERE SAS
- Filing Date
- 2024-12-12
- Publication Date
- 2026-06-19
Abstract
Pre-charging method for an electric vehicle equipped with a bidirectional charging system. The present invention relates to a method for charging (100) using an AC charging station, a battery of an electric vehicle equipped with a bidirectional charging system comprising: - a bidirectional DC-DC converter, referred to as the DC converter, connected to the battery and to a DC bus capacitor, - a bidirectional AC-DC converter, referred to as the AC converter, connected to the DC bus capacitor, - a charging socket, - relays between the charging socket and the AC side of the AC converter, - three input capacitors, the charging method (100) comprising a pre-charging step (110), including an activation (102) of the DC converter in battery discharge mode, to charge the DC bus capacitor. (Figure 2)
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