公开(公告)号：US20200259354A1

公开(公告)日：2020-08-13

申请号：US16724546

申请日：2019-12-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshihiro UCHIDA ,  Kiyohito MACHIDA ,  Yuki MORIYA ,  Nobuyuki TANAKA ,  Kazuki KUBO ,  Masaki UCHIYAMA

IPC: H02J7/00

Abstract: An ECU performs a process routine including a step of acquiring a voltage, a current, and a battery temperature, a step of estimating an SOC, a step of performing a parallel gain calculating process, a step of performing an IWin calculating process, a step of performing DWin/DWout calculating process, a step of performing an NWin/NWout calculating process, and a step of setting Win and Wout.

公开(公告)号：US20190198945A1

公开(公告)日：2019-06-27

申请号：US16227768

申请日：2018-12-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyohito MACHIDA ,  Yoshihiro UCHIDA ,  Masaki UCHIYAMA

IPC: H01M10/48 ,  H02J7/00 ,  H01M10/46

Abstract: A battery pack includes a plurality of modules connected in series to one another. Each of the plurality of modules includes a plurality of cells connected in parallel to one another. If a first condition and a second condition are satisfied, an ECU diagnoses an abnormality in which a current path of a cell included in any module breaks. The first condition is a condition that the voltage difference between the maximum voltage and the minimum voltage among a plurality of voltage values is less than a reference value before execution of plug-in charging control, each of the plurality of voltage values being detected by a corresponding one of a plurality of voltage sensors. The second condition is a condition that the voltage difference between the maximum voltage and a voltage is more than or equal to the reference value after execution of the plug-in charging control.

公开(公告)号：US20170125861A1

公开(公告)日：2017-05-04

申请号：US15285874

申请日：2016-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyohito MACHIDA

IPC: H01M10/633 ,  H01M10/6563 ,  H01M10/613 ,  H01M10/625 ,  B60K1/04 ,  H01M10/48

CPC classification number: H01M10/633 ,  B60K1/04 ,  B60K11/06 ,  B60K2001/005 ,  B60Y2400/302 ,  H01M10/486 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6563 ,  H01M2220/20

Abstract: To provide a battery device including a battery; a first cooling system having a first cooling fan and a first temperature sensor; a second cooling system having a second cooling fan and a second temperature sensor; and a controller, wherein the controller carries out abnormality determination with respect to a temperature sensor when a difference between the first cooling air temperature and the second cooling air temperature, detected by the first temperature sensor and the second temperature sensor, respectively, after elapse of a predetermined set period after a start switch of the vehicle is turned off while the first cooling fan and the second cooling fan remain stopped, is equal to or greater than a predetermined amount.

公开(公告)号：US20160301119A1

公开(公告)日：2016-10-13

申请号：US15094216

申请日：2016-04-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Junta IZUMI ,  Kiyohito MACHIDA ,  Masakazu HABU ,  Kiyoe OCHIAI

IPC: H01M10/66 ,  H01M10/613 ,  H01M10/6563 ,  H01M10/0525 ,  H01M10/34 ,  H01M10/63 ,  H01M10/625

CPC classification number: H01M10/6563 ,  H01M10/48 ,  H01M10/613 ,  H01M10/625 ,  H01M10/633

Abstract: If the battery temperature TB of the main battery is equal to or higher than the first temperature T0 and a noise level within a vehicle interior is equal to or higher than a predetermined value Lo during inhibition of the first constant control under a predetermined condition, the cooling system performs second constant control for driving the cooling fan with a second command value D3 and also performs the problem detection processing based on an actual rotation rate of the cooling fan during the second constant control.

Abstract translation: 如果主电池的电池温度TB等于或高于第一温度T0，并且在预定条件下禁止第一恒定控制期间车辆内部的噪声电平等于或高于预定值Lo，则 冷却系统执行用第二指令值D3驱动冷却风扇的第二恒定控制，并且还在第二恒定控制期间基于冷却风扇的实际旋转速率执行问题检测处理。

公开(公告)号：US20200303787A1

公开(公告)日：2020-09-24

申请号：US16768376

申请日：2018-11-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kiyohito MACHIDA ,  Hiroki TASHIRO ,  Yoshihiro UCHIDA ,  Nobuyuki TANAKA ,  Masaki UCHIYAMA

IPC: H01M10/44 ,  B60L58/12 ,  B60L58/21 ,  H01M10/42 ,  H01M10/48 ,  G01R31/389

Abstract: A secondary battery system includes an assembled battery that includes a plurality of blocks that are connected in series to one another. Each of the plurality of the blocks includes same number of cells that are connected in parallel to one another. A control device is configured to calculate an internal resistance ratio and a protection current. The internal resistance ratio is a value obtained by dividing the higher one of internal resistances by the lower one of the internal resistances of two of the plurality of the blocks. The protection current is a value obtained by multiplying the internal resistance ratio by a current value of the assembled battery detected by a current sensor. The control device is configured to perform the charge-discharge control based on the protection current.

公开(公告)号：US20190221898A1

公开(公告)日：2019-07-18

申请号：US16245834

申请日：2019-01-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kiyohito MACHIDA ,  Yoshihiro UCHIDA ,  Masaki UCHIYAMA

IPC: H01M10/48 ,  H01M10/613 ,  G01R19/02 ,  G01R31/3842 ,  H01M10/42

Abstract: An ECU performs a process including the steps of: acquiring a lowest temperature TBmin and a temperature TC of cooling air; acquiring a fan airflow volume; setting a cooling coefficient; calculating a resistance value Rtmin; calculating a root-mean-square value of a current; setting TBoffset1; calculating a resistance value Rtmax; calculating a temperature index Ftmax; calculating a temperature index Ftmin; calculating an evaluation function ΔF; calculating a maximum current correction gain G; and calculating a maximum current value Imax.

公开(公告)号：US20180313906A1

公开(公告)日：2018-11-01

申请号：US15963579

申请日：2018-04-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenji TAKAHASHI ,  Kazushi AKAMATSU ,  Kiyohito MACHIDA

IPC: G01R31/36

Abstract: A battery system includes: a battery; a voltage detector that detects a voltage of the battery as a detected voltage value; a current detector that detects a current flowing through the battery as a detected current value; and an electronic control unit. The electronic control unit is configured to estimate an aging deterioration of the battery based on an open circuit voltage value that is calculated from the detected voltage value and an integrated current value that is calculated from the detected current value, and estimate the aging deterioration of the battery based on the open circuit voltage value and the integrated current value that are calculated when a charge level of the battery is in the non-hysteresis region.

公开(公告)号：US20170240065A1

公开(公告)日：2017-08-24

申请号：US15514631

申请日：2015-09-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyohito MACHIDA ,  Nobuyuki TANAKA ,  Teruo ISHISHITA ,  Keiichi MINAMIURA

IPC: B60L11/18 ,  H01M10/6563 ,  H01M10/633 ,  H01M10/48 ,  H01M10/613 ,  H01M10/625

Abstract: A cooling device for a battery that is mounted in a vehicle includes: a cooling fan that is configured to suck air in a vehicle interior, and to blow the sucked air to the battery; an intake air temperature sensor that is configured to detect a temperature of the air sucked by the cooling fan; and an electronic control unit that is configured (i) to control the cooling fan, and (ii) to prohibit the cooling fan from being operated when a detected value of the intake air temperature sensor is lower than a first temperature.

公开(公告)号：US20160301116A1

公开(公告)日：2016-10-13

申请号：US15092089

申请日：2016-04-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyoe OCHIAI ,  Junta IZUMI ,  Kiyohito MACHIDA ,  Masakazu HABU

IPC: H01M10/633 ,  H01M10/6563 ,  H01M10/625 ,  H01M10/34 ,  H01M10/0525

CPC classification number: H01M10/633 ,  B60H1/00278 ,  B60H1/00335 ,  B60H1/00392 ,  B60H2001/003 ,  B60L3/0046 ,  B60L58/26 ,  B60L2240/545 ,  B60L2240/662 ,  B60L2240/80 ,  B60L2260/42 ,  H01M10/0525 ,  H01M10/345 ,  H01M10/625 ,  H01M10/6563 ,  H01M2220/20 ,  Y02T10/7011 ,  Y02T10/705 ,  Y02T10/7291 ,  Y02T90/16

Abstract: A secondary battery is installed on an electric vehicle and includes a cooling fan, a temperature sensor and a controller. The controller is configured to drive the cooling fan at a fixed command value for a predetermined period, when the temperature of the secondary battery becomes equal to or higher than a first predetermined temperature after the electric vehicle is started. The controller is configured to detect a presence or absence of an abnormality in the cooling fan based on an actual rotational speed of the cooling fan during the predetermined period. The controller is configured to inhibit driving of the cooling fan at the fixed command value when the temperature of the secondary battery is equal to or higher than a second predetermined temperature that is higher than the first predetermined temperature.

Abstract translation: 二次电池安装在电动车辆上，包括冷却风扇，温度传感器和控制器。 控制器被配置为当电动汽车启动后二次电池的温度等于或高于第一预定温度时，以固定的指令值驱动冷却风扇预定的时间。 控制器被配置为基于在预定时段期间冷却风扇的实际转速来检测冷却风扇中是否存在异常。 控制器被配置为当二次电池的温度等于或高于高于第一预定温度的第二预定温度时，禁止以固定指令值驱动冷却风扇。

公开(公告)号：US20160301115A1

公开(公告)日：2016-10-13

申请号：US15092166

申请日：2016-04-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Junta IZUMI ,  Noritaka IKEJIRI ,  Kiyoe OCHIAI ,  Kiyohito MACHIDA ,  Masakazu HABU

IPC: H01M10/625 ,  H01M10/613 ,  H01M10/66

CPC classification number: H01M10/625 ,  B60H1/00278 ,  H01M10/0525 ,  H01M10/486 ,  H01M10/613 ,  H01M10/6563 ,  H01M10/663 ,  Y02E60/122

Abstract: A cooling system includes a cooling fan that blows cooled air to a main battery and a temperature sensor. When the temperature of the main battery is equal to or higher than a first predetermined temperature after start up of an electric drive vehicle, the cooling fan is driven with a constant command value for a predetermined time period and detection process of abnormal condition is performed for detecting presence or absence of abnormal condition of the cooling fan based on an actual rotation speed of the cooling fan. When the start up of the electric drive vehicle is based on an external charging operation of the secondary battery, driving of the cooling fan with the constant command value is inhibited. This structure ensures sufficient opportunities for detecting presence or absence of abnormal condition of the cooling fan.

Abstract translation: 冷却系统包括将冷却的空气吹到主电池和温度传感器的冷却风扇。 当主电池的温度等于或高于电动车辆启动后的第一预定温度时，以恒定的指令值驱动冷却风扇达预定时间段，并且执行异常状态的检测处理 基于冷却风扇的实际转速来检测冷却风扇的异常状况。 当电动车辆的启动是基于二次电池的外部充电操作时，以恒定的指令值驱动冷却风扇。 这种结构确保了足够的机会来检测冷却风扇的异常状况的存在或不存在。