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  "description": "A battery pack comprises series-connected battery groups (1-M). At least one battery group comprises one or more high charge rate battery cells (81,81a; 82,82a) with first battery switches (85;86), and one or more regular charge rate battery cells (83,83a; 84) with second battery switches (87;88)…",
  "path": "/patents/1408802",
  "publishedAt": "2023-11-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J7/485",
    "GBATTERIES ENERGY CANADA INC [CA]"
  ],
  "textContent": "A battery pack comprises series-connected battery groups (1-M). At least one battery group comprises one or more high charge rate battery cells (81,81a; 82,82a) with first battery switches (85;86), and one or more regular charge rate battery cells (83,83a; 84) with second battery switches (87;88). A controller (2) produces pulsed switching signals to control the battery switches (85-88), each pulsed switching signal corresponding to one of the battery switches (85-88). The controller partially charges the battery pack (1) using an ultra high charging rate for the high charge rate battery cells (81, 81a; 82, 82a). Then the controller switches in the regular charge rate battery cells (83,83a; 84) via the second battery switches (87;88). The ON times of switches (85-88) overlap, to ensure that there is always at least one battery switch (85-88) in each battery group in a closed state, at all times during charging of the battery pack (1).",
  "title": "SYSTEM AND METHOD FOR BATTERY PACK"
}