Patent ID: 11955610
Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC H

Claim 0:
1. A battery for a transportation vehicle, the battery comprising:
at least one battery cell; and
a battery management system including a controller and being programmed to manage battery operation by determining a categorization variable using a two-operation evaluation of at least one of operating variables and/or of a computed variable derived therefrom, wherein the operating variables include a plurality of safety and lifetime operating variables of at least one battery cell of the battery registered by the battery management system and/or an external database, wherein the battery management system categorizes the battery with respect to further handling based on the registered plurality of safety and lifetime operating variables,
wherein the two-operation evaluation includes a first operation wherein:
at least one safety operating variable is derived and compared to an assigned threshold value;
a failure prognosis is prepared for a plurality of the lifetime operating variables in response to the at least one safety operating variable falling below the threshold value or one of multiple threshold values;
the categorization variable is determined based on the prepared failure prognosis; and
a history variable is determined for at least one battery cell of the battery based on the at least one safety operating variable determined for the at least one battery cell, wherein the history variable indicates a preceding operating load of the at least one battery cell; and

wherein a second operation of the two-operation evaluation includes:
determination of the failure prognosis performed using the lifetime operating variables based on a statistical model for at least one battery cell of the battery that incorporates the operating variables including operating duration of the battery cell, number of cycles of the battery cell, capacitance of the battery cell, quick-charged total amount of power, and/or mileage of a transportation vehicle that includes the battery;
assignment of the failure prognosis to a value range of the categorization variable based on a numerical value of the failure prognosis, wherein the categorization variable is assigned to a value range indicative of further use of the battery; and
indication of recommendations or instructions for further handling of the battery.