Patent ID: 9520621
Filing Date: 2016-12-13
CPC Classification: B60L,G01R,H01M,Y02E,Y02T

Claim Text:
1. A method for identifying triggering of a safety device, wherein the safety device is associated with a battery cell and is triggered when there is a safety-critical situation in the battery cell, comprising: detecting an actual time profile of a voltage of the battery cell; determining an expected time profile of the voltage using a model; comparing the actual time profile of the voltage with the expected time profile of the voltage by comparing an actual change in the voltage over time with an expected change in the voltage over time; and making a decision, on the basis of the comparison, as to whether the safety device has been triggered, the decision being made that the safety device has been triggered when the actual change in the voltage over time deviates by more than a predefined amount from the expected change in the voltage over time.