{
  "$type": "site.standard.document",
  "description": "A control unit manages idle time in a battery energy storage system. The battery energy storage system has a main high voltage battery pack, an auxiliary battery pack, and a bi-directional DC-DC circuit connecting the main high voltage battery pack and the auxiliary battery pack to facilitate…",
  "path": "/patents/1381514",
  "publishedAt": "2026-04-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/46",
    "VOLVO PENTA CORPORATION"
  ],
  "textContent": "A control unit manages idle time in a battery energy storage system. The battery energy storage system has a main high voltage battery pack, an auxiliary battery pack, and a bi-directional DC-DC circuit connecting the main high voltage battery pack and the auxiliary battery pack to facilitate energy transfer between the two. The control unit is configured to monitor idle time and state of charge (SoC) of the main high voltage battery pack, wherein the idle time reflects a period during which the SoC remains unchanged; and initiate a charge alternation mode in response to the idle time of the main high voltage battery pack exceeding a predetermined duration, wherein the charge alternation mode involves alternating between energy transfer from the main high voltage battery pack to the auxiliary battery pack, and energy transfer from the auxiliary battery pack to the main high voltage battery pack.",
  "title": "CONTROL UNIT AND A METHOD FOR MANAGING IDLE TIME IN A BATTERY ENERGY STORAGE SYSTEM"
}