Systems and methods for identifying a reuse value of used battery using a residual value and market data
AssigneesToyota Motor Engineering & Manufacturing North America, Inc.a, Toyota Jidosha Kabushiki Kaisha
InventorMasanori Ishigaki
Life of this patent
Estimating the term…
Abstract
Systems, methods, and other embodiments described herein relate to estimating a residual value using derivative computations of a safety state and utilizing market data for identifying the reuse value. In one embodiment, a method includes removing interference sources by computing first derivatives of real-parts from measured impedance of a used battery. The method also includes estimating a residual value from a safety state and a health state derived with changes of the first derivatives. The method also includes identifying a reuse value using the residual value and market data. The method also includes installing the used battery to a device according to the reuse value.
Claims20
An estimation system comprising:
- a memory storing instructions that, when executed by a processor, cause the processor to:
- measure impedance using testing equipment externally coupled with a battery module of a used battery acquiring data from an internal sensor of the battery module, the battery module having battery cells;
- remove interference associated with the impedance by computing first derivatives of real-parts from the impedance;
- detect plating of a terminal within the used battery using the testing equipment by comparing a difference between two values of the first derivatives with a threshold without the testing equipment disassembling one or more of the battery cells;
- estimate a residual value from a safety state and a health state derived with changes of the first derivatives;
- identify a reuse value using the residual value and market data;
- and
- assign the used battery to a device according to the reuse value.
A non-transitory computer-readable medium comprising:
- instructions that when executed by a processor cause the processor to:
- measure impedance using testing equipment externally coupled with a battery module of a used battery acquiring data from an internal sensor of the battery module, the battery module having battery cells;
- remove interference associated with the impedance by computing first derivatives of real-parts from the impedance;
- detect plating of a terminal within the used battery using the testing equipment by comparing a difference between two values of the first derivatives with a threshold without the testing equipment disassembling one or more of the battery cells;
- estimate a residual value from a safety state and a health state derived with changes of the first derivatives;
- identify a reuse value using the residual value and market data;
- and
- assign the used battery to a device according to the reuse value.
A method comprising:
- measuring impedance using testing equipment externally coupled with a battery module of a used battery acquiring data from an internal sensor of the battery module, the battery module having battery cells;
- removing interference associated with the impedance by computing first derivatives of real-parts from the impedance;
- detecting plating of a terminal within the used battery using the testing equipment by comparing a difference between two values of the first derivatives with a threshold without the testing equipment disassembling one or more of the battery cells;
- estimating a residual value from a safety state and a health state derived with changes of the first derivatives;
- identifying a reuse value using the residual value and market data;
- and
- installing assigning the used battery to a device according to the reuse value.
Dependencies are inferred from the claim text.