公开(公告)号：US20250123335A1

公开(公告)日：2025-04-17

申请号：US18999761

申请日：2024-12-23

Applicant: DENSO CORPORATION

Inventor： Satoru SHIMIZU ,  Kazuaki MAWATARI ,  Hiroshige MATSUI ,  Naoki ARISAKA ,  Tomoya JOMORI ,  Tomoyuki HARADA

IPC: G01R31/392 ,  G01R31/378 ,  H01M10/0525 ,  H01M10/48 ,  H02J7/00

Abstract: A charging system includes a charger for a storage battery including a lithium-ion battery, and a battery-side device that monitors a battery state including a lithium precipitation amount in the lithium-ion battery. The charger includes an information acquisition unit that acquires battery information including the battery state from the battery-side device, a charging determination unit that determines whether charging of the storage battery is possible based on the battery information, and a charging control unit that charges the storage battery based on a determination result of the charging determination unit.

公开(公告)号：US20250130287A1

公开(公告)日：2025-04-24

申请号：US18999591

申请日：2024-12-23

Applicant: DENSO CORPORATION

Inventor： Satoru SHIMIZU ,  Kazuaki MAWATARI ,  Hiroshige MATSUI ,  Naoki ARISAKA ,  Tomoya JOMORI ,  Tomoyuki HARADA

IPC: G01R31/392 ,  G01R31/378 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396 ,  H01M10/0525 ,  H01M10/48

Abstract: The battery evaluation system is a system for evaluating a storage battery including a lithium-ion battery. The battery evaluation system includes a battery monitoring unit that monitors a battery state of the storage battery, and an evaluation device that acquires battery state information including a monitoring result of the battery state from the battery monitoring unit and evaluates the storage battery based on the battery state information. The battery monitoring unit calculates a lithium precipitation amount in the lithium-ion battery as one index indicating the battery state. The evaluation device determines safety of the storage battery based on the lithium precipitation amount.

公开(公告)号：US20240345173A1

公开(公告)日：2024-10-17

申请号：US18750771

申请日：2024-06-21

Applicant: DENSO CORPORATION

Inventor： Satoru SHIMIZU ,  Kazuaki MAWATARI ,  Kazuyuki ONO ,  Kumiko KAWABATA ,  Hiroshige MATSUI

IPC: G01R31/392 ,  G01R31/36 ,  G01R31/374 ,  G01R31/387 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48

CPC classification number: G01R31/392 ,  G01R31/3646 ,  G01R31/3647 ,  G01R31/374 ,  G01R31/387 ,  H01M10/425 ,  H01M10/44 ,  H01M10/486 ,  H01M2010/4271

Abstract: A battery monitoring device monitors a battery. The battery monitoring device includes a deterioration detection unit that detects a physical quantity having a higher correlation with a capacity deterioration of the battery than a voltage and a current of the battery, and a capacity ratio estimation unit that estimates a capacity ratio of the battery based on the physical quantity.

公开(公告)号：US20240347795A1

公开(公告)日：2024-10-17

申请号：US18750764

申请日：2024-06-21

Applicant: DENSO CORPORATION

Inventor： Satoru SHIMIZU ,  Kazuaki MAWATARI ,  Kazuyuki ONO ,  Hiroshige MATSUI ,  Kumiko KAWABATA

IPC: H01M10/48 ,  G01R31/3842 ,  G01R31/392 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M10/482 ,  G01R31/3842 ,  G01R31/392 ,  H01M10/0525 ,  H01M10/425 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A battery monitoring device monitors a battery that is rechargeable and dischargeable. The battery monitoring device includes a factor monitoring unit that monitors a factor that leads to an abnormal heat generation phenomenon in which a temperature of the battery continues to rise unintentionally, and an abnormality detection unit that detects an abnormality in the battery. The abnormality detection unit reduces occurrence of the abnormal heat generation phenomenon in advance based on a monitoring result of the factor, and detects an abnormal state occurring in the battery at an initial stage of the occurrence of the abnormal heat generation phenomenon to implement a countermeasure against the abnormal heat generation phenomenon based on a detection result of the abnormal state.

公开(公告)号：US20240345174A1

公开(公告)日：2024-10-17

申请号：US18750795

申请日：2024-06-21

Applicant: DENSO CORPORATION

Inventor： Satoru SHIMIZU ,  Kazuaki MAWATARI ,  Kazuyuki ONO ,  Kumiko KAWABATA ,  Hiroshige MATSUI

IPC: G01R31/392 ,  B60L58/10 ,  G01R31/374 ,  G01R31/389 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/48 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/6571 ,  H02J7/00

CPC classification number: G01R31/392 ,  G01R31/374 ,  G01R31/389 ,  H01M10/0525 ,  H01M10/4285 ,  H01M10/486 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/6571 ,  H02J7/0047 ,  B60L58/10

Abstract: A battery monitoring device monitors a lithium precipitation amount in a lithium ion battery. The battery monitoring device includes a precipitation amount detection unit that has a short circuit for discharging the lithium ion battery by temporarily shorting both ends of the lithium ion battery. The lithium precipitation amount detection unit calculates an estimation value of the lithium precipitation amount based on a change in at least one of current or voltage when both the ends of the lithium ion battery is shorted by the short circuit. The battery monitoring device includes a temperature sensor that detects a battery temperature of the lithium ion battery.

公开(公告)号：US20240345169A1

公开(公告)日：2024-10-17

申请号：US18753842

申请日：2024-06-25

Applicant: DENSO CORPORATION

Inventor： Satoru SHIMIZU ,  Kazuaki MAWATARI ,  Kazuyuki ONO ,  Kumiko KAWABATA ,  Hiroshige MATSUI ,  Keisuke UCHIDA ,  Satoshi TAKADA ,  Ken TANAKA

IPC: G01R31/367 ,  G01R31/371 ,  G01R31/392 ,  H04L9/00 ,  H04L9/40

CPC classification number: G01R31/367 ,  G01R31/371 ,  G01R31/392 ,  H04L63/0869 ,  H04L9/50

Abstract: A battery monitoring system includes a monitoring unit that monitors a battery and a higher device that is provided with monitoring data obtained by monitoring of the battery by the monitoring unit and saves, by using a blockchain, at least part of specific information included in the monitoring data. The higher device includes a block generation unit that generates a new block including a hash value based on the at least part of the specific information and a last block linked at an end of the blockchain, and an external communication device configured to save, in a distributed manner in a plurality of external devices, the new block generated by the block generation unit. At least one of the monitoring unit or the higher device is provided with a data protection unit configured to ensure reliability of the monitoring data.