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公开(公告)号：US20240348072A1
公开(公告)日：2024-10-17
申请号：US18637208
申请日：2024-04-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shohei MATSUOKA , Yuko MARUYAMA , Yoshihiro UCHIDA , Koichi TSUJI , Yuki SUGO
CPC classification number: H02J7/005 , B60L53/62 , B60L58/13 , B60L58/16 , G01R31/392 , H01M10/44 , H02J7/007 , H01M2220/20
Abstract: A battery system is configured to estimate a presence or absence of deterioration of a battery. This deterioration is a phenomenon in which an internal resistance of the secondary battery increases due to uneven ion concentration in a non-aqueous electrolyte. The battery system includes a voltage sensor and an ECU. The voltage sensor detects a voltage value of the battery. The ECU is configured to perform a calculation process and an estimation process. The calculation process includes a process of calculating, in accordance with the voltage value, an evaluation value for evaluating a degree of polarization mitigation after charging or discharging of the battery. The estimation process includes a process of estimating the presence or absence of the deterioration in accordance with the evaluation value.
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公开(公告)号：US20230249572A1
公开(公告)日：2023-08-10
申请号：US18057297
申请日：2022-11-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuko MARUYAMA , Shohei MATSUOKA
CPC classification number: B60L53/65 , B60L50/64 , G07C5/0808 , G07C5/0816 , H01M10/441 , H01M10/482 , H01M10/4257 , H01M2220/20
Abstract: A diagnostic system for a battery module including a plurality of electric cells includes a displacement detector configured to detect a displacement of at least one of the electric cells during charging, and an electronic control unit configured to determine whether the battery module is a genuine product. The electronic control unit is configured to determine whether the battery module is the genuine product based on the displacement detected by the displacement detector.
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