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US 11,143,706 B2Granted
Battery capacity estimation method and battery capacity estimation device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsJunta Izumi, Masahiko Mitsui, Juni Yasoshima
Life of this patent
Estimating the term…
Abstract
A battery capacity estimation method includes a first step and a second step. The first step is a step of obtaining image data of a Nyquist diagram drawn by a predetermined method, based on a Nyquist plot obtained by a predetermined AC-IR measurement. The second step is a step of obtaining a battery capacity estimate value of a battery to be measured by inputting the image data of the Nyquist diagram obtained in the first step into an input layer of a pre-trained neural network model.
Claims10
A battery capacity estimation method comprising:
- a first step of obtaining image data of a Nyquist diagram drawn by a predetermined method, based on a Nyquist plot obtained by a predetermined AC-IR measurement;
- and
- a second step of obtaining a battery capacity estimate value of a battery to be measured, by inputting the image data of the Nyquist diagram obtained in the first step into a pre-trained neural network model, wherein:
- the neural network model comprises:
- an input layer configured to receive the image data of the Nyquist diagram of the battery to be measured;
- an intermediate layer configured to obtain a battery capacity estimate value according to the image data input to the input layer;
- and
- an output layer configured to output the battery capacity estimate value obtained by the intermediate layer.
5 more elements
A battery capacity estimation device comprising:
- an input layer configured to receive image data of a Nyquist diagram of a battery to be measured;
- an intermediate layer configured to obtain a battery capacity estimate value by performing a computation based on a weighting factor of a pre-trained neural network model based on the image data input to the input layer;
- and
- an output layer configured to output the battery capacity estimate value obtained by the intermediate layer.
1 more element
Dependencies are inferred from the claim text.