公开(公告)号：US20250158423A1

公开(公告)日：2025-05-15

申请号：US18822847

申请日：2024-09-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yohei OGAWA ,  Hiroshi YOSHIDA ,  Takashi OGURA ,  Yuki SUGO

IPC: H02J7/00

Abstract: The battery system is a system for equalizing the capacity of each cell included in a battery in which a plurality of cells having a plateau region in a charge-discharge curve are connected in series, and includes an equalization unit for adjusting the capacity of each cell, and an ECU for controlling the charge-discharge of the battery. ECU determines which control method is used according to a predetermined determination condition for determining which of the first control method and the second control method is suitable for equalization in the present situation, and controls the equalization unit.

公开(公告)号：US20230271522A1

公开(公告)日：2023-08-31

申请号：US18086780

申请日：2022-12-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshiaki KIKUCHI ,  Hiroshi YOSHIDA ,  Akira KIYAMA ,  Yu SHIMIZU ,  Kensaku MIYAZAWA ,  Takayuki OSHINO

IPC: B60L53/62

CPC classification number: B60L53/62

Abstract: A vehicle configured to perform external charging for charging an in-vehicle power storage device using electric power supplied from a system power supply outside the vehicle, wherein the vehicle includes a control device and a storage device. The control device is configured to set a command value of a charging current supplied from the system power supply to the power storage device through the charging device during the external charging, and to control the charging current by transmitting the command value to the charging device. The storage device is configured to store a program executed by the control device. The control device calculates an integrated value of the command value when the command value is larger than a threshold value. The control device is configured to execute a reduction process of reducing the command value when the integrated value is large than when the integrated value is small.

公开(公告)号：US20220294029A1

公开(公告)日：2022-09-15

申请号：US17674493

申请日：2022-02-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YOSHIDA ,  Yuto BABA

IPC: H01M10/42 ,  B60L58/10

Abstract: A battery resistance measurement system measures an electrical resistance of a battery and comprises a determination unit and a measurement unit. The determination unit determines, based on whether a predetermined condition is satisfied, whether a target battery has switched from a charged state to a discharged state in which while the target battery receives supplied electric power the target battery outputs electric power larger than the supplied electric power. The measurement unit starts measuring the electrical resistance of the target battery at a time when the determination unit determines that the target battery is switched from the charged state to the discharged state.

公开(公告)号：US20210138931A1

公开(公告)日：2021-05-13

申请号：US17072353

申请日：2020-10-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YOSHIDA ,  Nobuyuki TANAKA ,  Kazuki KUBO

IPC: B60L58/26 ,  H01M10/625 ,  B60L58/12

Abstract: An ECU performs processing including obtaining a full charge capacity when a cooling apparatus remains stopped, showing textual information that inquires about whether or not cooling can be carried out when a battery temperature is equal to or lower than a threshold value TB(1), when the full charge capacity is equal to or lower than a threshold value C(1), and when the battery temperature is equal to or higher than a threshold value TB(2), carrying out battery cooling control when a request for carrying out cooling has been issued, and maintaining a standstill state of the cooling apparatus when no request for carrying out cooling has been issued.

公开(公告)号：US20190235030A1

公开(公告)日：2019-08-01

申请号：US16251756

申请日：2019-01-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YOSHIDA

IPC: G01R31/3842 ,  B60W10/08 ,  G01R19/165 ,  G01R31/389 ,  G01R31/36 ,  H01M10/48

CPC classification number: G01R31/3842 ,  B60W10/08 ,  G01R19/16542 ,  G01R31/3646 ,  G01R31/389 ,  H01M10/486

Abstract: An electrically-driven vehicle includes a power storage device that stores power to be supplied to a motor, and a controller that controls output of the power storage device. The controller estimates a SOC of the power storage device. The controller detects output power of the power storage device and calculates an output power upper limit value of the power storage device by using the SOC when a voltage of the power storage device reaches a lower limit voltage during discharge of the power storage device. The controller stops the electrically-driven vehicle in the case where the detected output power is lower than the output power upper limit value.

公开(公告)号：US20250135944A1

公开(公告)日：2025-05-01

申请号：US18926643

申请日：2024-10-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YOSHIDA ,  Takashi Ogura ,  Yuki Sugo

IPC: B60L58/12

Abstract: The display system includes an instrument panel, a battery, a current sensor, and an ECU. The battery stores electric power for traveling of the vehicle. The current sensor detects a charge/discharge current of the battery. ECU calculates SOC of the battery according to the current sensor. SOC includes a control SOC used for charge/discharge control of the battery, and a display SOC displayed on the instrument panel and calculated according to the control SOC. When the index value indicating the degree of decrease in the calculation accuracy of the control SOC exceeds the threshold value, ECU starts a calculation process of calculating the display SOC lower than the control SOC.

公开(公告)号：US20250076398A1

公开(公告)日：2025-03-06

申请号：US18744709

申请日：2024-06-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YOSHIDA ,  Takashi OGURA ,  Yuki SUGO ,  Koichi NISHINO

IPC: G01R31/388 ,  G01R31/36 ,  G01R31/374 ,  H01M10/44

Abstract: The threshold cumulative value calculation unit calculates a threshold cumulative value. The current cumulating unit cumulates the charging current. When the first current cumulative value, which is the cumulative value from the start of charging, becomes equal to or larger than the threshold cumulative value, the maximum value detecting unit starts detection of the local maximum value of the amount of change in the voltage. The full charge capacity calculation unit calculates a full charge capacity by adding a first current cumulative value, which is a current cumulative value from when the maximum value is detected to when the full charge is detected, to a reference capacity when the maximum value is detected.

公开(公告)号：US20230118921A1

公开(公告)日：2023-04-20

申请号：US17820021

申请日：2022-08-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsubasa MIGITA ,  Yoshihiro UCHIDA ,  Hiroshi YOSHIDA

IPC: G01R31/3835 ,  H02J7/35 ,  H01M10/48 ,  H02J7/00 ,  B60L50/60

Abstract: A monitoring device for a battery that supplies electric power to a traction motor of a vehicle includes a sensor that detects a voltage of a battery cell of the battery, and a processing circuit that executes abnormality detection processing for detecting an abnormality in the battery, based on a detected voltage value that is detected by the sensor. The processing circuit executes processing for identifying a first elapsed time from a main switch of the vehicle being turned off until charging or discharging is started between the battery and predetermined on-board equipment, processing for identifying a second elapsed time from starting of the charging or discharging between the battery and the on-board equipment to a current point in time, and the abnormality detection processing when a total time of the first elapsed time and the second elapsed time reaches a predetermined threshold value.

公开(公告)号：US20190160946A1

公开(公告)日：2019-05-30

申请号：US16181896

申请日：2018-11-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YOSHIDA

IPC: B60L3/00 ,  B60L11/18 ,  B60L3/12

Abstract: An electrically driven vehicle comprises a battery configured by connecting a plurality of cells in series; and a motor configured to transmit electric power to and from the battery. When an abnormality occurs in a cell voltage detection system configured to detect cell voltages of the respective cells of the battery, the electrically driven vehicle prohibits regenerative control of the motor. The electrically driven vehicle determines whether the battery is being charged, based on an open circuit voltage of a block that is comprised of at least two or more cells among all the cells constituting the battery. The open circuit voltage of the block is calculated from a voltage of the block and a battery current flowing in the battery.

公开(公告)号：US20210247450A1

公开(公告)日：2021-08-12

申请号：US17162278

申请日：2021-01-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hirotaka ITO ,  Hiroshi YOSHIDA ,  Yoshihiro UCHIDA ,  Tetsuya WATANABE

IPC: G01R31/36 ,  B60L58/12 ,  H01M10/48 ,  H01M10/44 ,  G01R31/382

Abstract: A battery diagnosis apparatus includes an SOC calculator, a ΔSOC obtaining unit, a largest block identification unit, and a diagnosis unit. The SOC calculator calculates an SOC for each parallel cell block included in a battery assembly based on an output from a battery sensor that detects a state of the battery assembly. When charging or discharging of the battery assembly is carried out, the ΔSOC obtaining unit obtains ΔSOC for each parallel cell block. The largest block identification unit identifies a largest block in a diagnosis target. When a degree of deviation between ΔSOC of the largest block and a ΔSOC reference value exceeds a prescribed level, the diagnosis unit determines that abnormality has occurred in the largest block in the diagnosis target.