Fast charging station for electric vehicles

The integration of a discharge circuit with a PTC heating element in fast charging stations addresses the challenge of safely dissipating stored energy during emergencies, ensuring high operational reliability and safety.

DE102023130950A1Inactive Publication Date: 2025-05-08COMPLEO CHARGING SOLUTIONS GMBH & CO KG
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Patent Information

Application Number
DE102023130950
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-11-08
Publication Date
2025-05-08
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Fast charging stations for electric vehicles face challenges in quickly and safely dissipating stored energy in the event of abrupt separation, maintenance, unauthorized interventions, or system failures, where controlled termination of the charging process and shutdown of the station are not possible.

Method used

Incorporating a discharge circuit that is normally in a discharging state but is actively prevented from discharging during operation. Upon failure or emergency shutdown, the discharge circuit automatically transitions to discharge the energy store quickly and safely, utilizing a non-programmable and supply-voltage-independent design with a PTC heating element to limit discharge current.

Benefits of technology

The solution ensures high operational reliability by quickly and effectively dissipating stored energy in emergency situations, even if essential components are destroyed, thus maintaining safety and efficiency.

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Abstract

The invention relates to a fast charging station for electric vehicles, wherein the fast charging station (1) has a power converter arrangement (9) for converting an alternating voltage as input voltage of the fast charging station (1) into a direct voltage as output voltage of the fast charging station (1), wherein the power converter arrangement (9) has at least one energy storage device (10).It is proposed that the converter arrangement (9) has a discharge circuit (12) connected to the energy storage device (10) for discharging the energy storage device (10), that the discharge circuit (12) is in a discharged state by default in which the energy storage device (10) is discharged via the discharge circuit (12), that the discharge circuit (12) is actively brought into an inactive state by a control unit (15) during operation of the converter arrangement (9) in which the discharge circuit (12) does not discharge the energy storage device (10), and that the discharge circuit (12) automatically enters the discharged state in the event of a failure, in particular an emergency shutdown, of the control unit (15).
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