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US 2026/0285178 A1Published application
Battery system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshiki SUGINO, Yuki Moriya, Yuki Imade, Yuma Kumagai
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Abstract
An ECU executes processing including, in a case where direct current charging is started, a step of acquiring a temperature difference stored last time, a step of acquiring an elapsed time, a step of calculating a correction coefficient, a step of calculating a temperature difference, and a step of executing a direct current charging process, and in a case where charging is ended, a step of storing, as the temperature difference stored last time, a temperature difference when charging is ended.
Claims6
A battery system comprising:
- a power storage device mounted in a vehicle;
- a cooling device configured to cool the power storage device;
- a detection device configured to detect a surface temperature of the power storage device;
- and
- a control device configured to control charging of the power storage device,
- wherein the control device is configured to
- estimate, by using an elapsed time from an end time point of previous charging to a start time point of current charging and a temperature difference between the surface temperature and an internal temperature of the power storage device at the end time point of the previous charging, the temperature difference at the start time point of the current charging,
- control the charging of the power storage device by using the temperature difference that is estimated, and
- store the temperature difference after the charging of the power storage device is ended.
6 more elements
Dependencies are inferred from the claim text.