{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/1412471",
  "publishedAt": "2024-11-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L53/11",
    "NINGBO GEELY AUTOMOBILE RES & DEVELOPMENT CO LTD [CN]"
  ],
  "textContent": "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).",
  "title": "A POWER SUPPLY SYSTEM FOR AN ELECTRIC VEHICLE DRIVETRAIN"
}