Stromversorgungssystem für einen Elektrofahrzeugantrieb

Details

Veröffentlichungs-Nr.

EP3960532

Aktenzeichen

EP20193154

Anmeldetag

27. August 2020

Veröffentlichung

13. November 2024

Erteilung

13. November 2024

Rechtsraum

EP

IPC

B60L58/18B60L58/19B60L58/21

Abstract

A power supply system for an electric vehicle drivetrain comprising a first high-voltage battery unit (21), a second high-voltage battery unit (22) connected in series with the first high-voltage battery unit (21), a circuit arrangement (23) having a plurality of high-power switching semiconductor devices (31-34) connected to the first and second high-voltage battery units (21, 22), and an electronic control system (24). The electronic control system (24) is configured for controlling operation of the plurality of high-power switching semiconductor devices (31-34) for, during a charging mode of the first and second high-voltage battery units (21, 22), routing high-voltage DC received from a vehicle external charging source (25) alternatingly to the first high-voltage battery unit (21) and to the second high-voltage battery unit (22), with an alternating frequency of at least 100 Hz, specifically at least 500 Hz, and more specifically in the range of 100 - 10 000 Hz. Moreover, the electronic control system (24) configured for controlling operation of the plurality of high-power switching semiconductor devices (31-34) for, during a power supply mode of the power supply system, supplying high-voltage DC from both the first and second high-voltage battery units (21,22) for driving a vehicle electrical traction machine (26) of the electric vehicle drivetrain, wherein the supplied high-voltage DC has a voltage level corresponding to the accumulated voltage level of the series connected first and second high-voltage battery units (21, 22).

Anmelder

Firmen

Ningbo Geely Automobile Research & Development Co. Ltd.
Zhejiang Geely Holding Group Co., Ltd.

Land

🇨🇳 China

Fachgebiete