{
  "$type": "site.standard.document",
  "description": "The invention relates to a method for estimating or predicting an internal battery state of at least one battery unit (203) within an electric energy storage system (201), such as in a vehicle (200), the method comprising: - obtaining operational data of the electric energy storage system relating…",
  "path": "/patents/1406007",
  "publishedAt": "2023-12-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L3/12",
    "VOLVO TRUCK CORP [SE]"
  ],
  "textContent": "The invention relates to a method for estimating or predicting an internal battery state of at least one battery unit (203) within an electric energy storage system (201), such as in a vehicle (200), the method comprising: - obtaining operational data of the electric energy storage system relating to operating conditions of the electric energy storage system, - feeding the obtained operational data to a non-linear state observer adapted to estimate and/or predict the internal battery state of the at least one battery unit in a series of time steps, such that an observer error of the non-linear state observer converges towards zero, or towards a value close to zero, - based on at least the obtained operational data, estimating or predicting the internal battery state using the non-linear state observer. [0002] The non-linear state observer is a switched multi-gain observer switching between at least two different static observer gains, wherein the observer gain to be used is selected based on a predicted or estimated value of the internal battery state as determined by the nonlinear state observer.",
  "title": "A METHOD FOR ESTIMATING OR PREDICTING AN INTERNAL BATTERY STATE OF A BATTERY UNIT"
}