Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Denso Corporation

Nobuyuki Tanaka

Yoshihiro Uchida

Kazuki Kubo

Masaya Amano

Junta Izumi

Kiyohito Machida

Yuki Sugo

Kenta Onishi

Shoji Nagata

Hiroshi Yoshida

Kenji Uchida

Masaki Uchiyama

Yuki Hayakawa

Masahiro Naito

Yoshiki Sugino

Yuki Moriya

Kenta Fujimoto

Ryota Takizawa

Go Hayasaka

Noritake Mitsutani

Hiroki Nagai

Hiroki Tashiro

Keiji Kaita

Koji Hokoi

Teruo Ishishita

Shunsuke Oyama

Masakiyo Horie

Keiichi Minamiura

Takahiko Hirasawa

Takeshi Hoshiba

Takuya Harada

Masashi Yoshimi

Takeshi Kishimoto

Takuya Honda

Shunya Kobayashi

Kimihito Nakamura

Kentaro Suzuki

Takahiro Noguchi

Satoshi Nishimoto

Kimio Saito

Daisuke Okanishi

Hiroki Kakui

Kouji Miyazaki

Atsushi Kato

Yuji Iwama

Takayuki Oshino

Koichi Tsuji

Yusuke Funabashi

Ryo Inoue

A method for inspecting an energy storage device, the method includes: estimating a degree of degradation of the energy storage device; determining, based on the estimated degree of degradation, a measurement condition such that time required to measure a full charge capacity of the energy storage device decreases or increases; and measuring the full charge capacity according to the determined measurement condition.

Method for inspecting energy storage device, non-transitory storage medium, and computer device

An estimation system includes a power storage device and one or more processors. The one or more processors are configured to execute a charge process of controlling a charge device so as to charge the power storage device, and an estimation process of estimating a full charge capacity of the power storage device. The one or more processors are configured to execute the charge process with an upper limit state of charge of the power storage device set to a value that is more than a first upper limit state of charge when a predetermined condition is met, the first upper limit state of charge being the upper limit state of charge at the time when the predetermined condition is not met.

Estimation system, estimation method, and vehicle

In representation processing, when a capacity retention is higher than a threshold value while a warranty condition is satisfied, an ECU has the capacity retention shown in a first manner. When the capacity retention is equal to or lower than the threshold value while the warranty condition is satisfied, the ECU has the capacity retention shown in a second manner.

Display system and vehicle including the same, and method of showing state of secondary battery

A tractor includes: a work machine connected to a vehicle body; an elevator mechanism configured to move the work machine up and down; an electric motor; a battery; an electric leakage detection circuit configured to detect electric leakage in the battery; and a control device. The control device controls the elevator mechanism either in a lowered state or a raised state, the lowered state being a state where the work machine is placed at a position making contact with a ground, the raised state being a state where the work machine is placed at a position distanced from the ground. In a case where the electric leakage detection circuit detects electric leakage in the battery at the time when the elevator mechanism is in the lowered state, the control device performs a state change process of bringing the elevator mechanism into the raised state.

Tractor

The battery system includes a secondary battery, a voltage sensor, a current sensor, a temperature sensor, and a processor. The processor is configured to calculate a polarization overvoltage by subtracting a voltage drop amount caused by a DC resistance and a reactive resistance of the secondary battery determined in accordance with a temperature and an SOC of the secondary battery from a voltage difference between OCV and CCV of the secondary battery.

Battery system, vehicle including the same, and method for monitoring secondary battery

A vehicle includes: an instrument panel; and an ECU that controls the instrument panel so that the instrument panel displays an icon representing a status of a battery. The icon represents one of a first indication and a second indication by an increase or decrease of a scale in a display region of the icon, and the other one of the first indication and the second indication by an amount indicated by a size of a display area of the icon, the first indication representing SOC of the battery, the second indication representing a full charge capacity of the battery.

Display system and vehicle including the same, and method of display of status of secondary battery

A display system includes an instrument panel and an ECU for controlling the instrument panel so that the instrument panel displays an indication related to a battery. The ECU controls the instrument panel so that the instrument panel continuously displays a second indication. The ECU also controls instrument panel so that instrument panel does not display a first indication when a predetermined condition does not hold true, and displays the first indication when the predetermined condition holds true, the predetermined condition being a condition that a display-related user operation has been performed. The first indication can be prevented from being mistaken as the second indication, without requiring a display-related user operation.

Display system, vehicle, and method of display of status of secondary battery

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(), when the full charge capacity is equal to or lower than a threshold value C(), and when the battery temperature is equal to or higher than a threshold value TB(), 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.

Cooling system for power storage

A vehicle includes: an engine; an exhaust pipe through which exhaust gas from the engine is released; a battery pack located near the exhaust pipe; and an ECU that executes, during limp-home traveling of the vehicle, control in which the battery pack is not charged and discharged, and output suppression control in which output of the engine is suppressed. In the output suppression control, when the catalyst temperature is above a threshold value, the ECU suppresses the output of the engine, as compared to when the catalyst temperature is below the threshold value, while maintaining a state in which the engine can output power.

Hybrid vehicle and method for controlling the same

An ECU sets a SOC estimated from an OCV at the time of activating a system of a vehicle as an initial SOC value in the case where the SOC during a stop of the system is higher than a first SOC, which represents the SOC estimated from the OCV at the time of activating the system by using a discharging curve line, or the SOC during the stop of the system is lower than a second SOC, which represents the SOC estimated from the OCV at the time of activating the system by using a charging curve line. The ECU sets the SOC during the stop of the system as the initial SOC value in the case where the SOC during the stop of the system is equal to or lower than the first SOC and is equal to or higher than the second SOC.

Battery system and SOC estimation method for secondary battery

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.

Secondary battery system and control method for secondary battery

A flue gas detection system includes: a temperature sensor configured to detect a temperature in a duct; a temperature sensor configured to detect a temperature in a duct; and an ECU. The ECU is configured to determine that a high-temperature gas is released from an assembled battery, when a period during which a temperature increase amount in the duct is more than a reference amount and a period during which a temperature increase amount in the duct is more than a reference amount are included in a predetermined period.

Flue gas detection system and flue gas detection method

An air-fuel ratio (A/F) sensor control device includes: an impedance detector detecting an impedance of an A/F sensor; and a pump current controller performing a digital control on a supply of electric current to the A/F sensor. The pump current controller includes a PID calculator calculating an instruction current value according to a difference of two input values, i.e., the difference between a PID control target value and a detection value of an inter-terminal voltage of a Nernst cell; and a protection clamper limiting a supply of electric current to a pump cell based on the instruction current value and the impedance. The protection clamper includes: a current clamp threshold calculator calculating an upper limit value and a lower limit value of the electric current based on the impedance of the Nernst cell, a first current value limiter limiting the instruction current value by the upper limit value and the lower limit value, and a second current value limiter performing a constant current limitation on an instruction current limit value by using an instruction constant current value.

Gas sensor controller

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.

Cooling device for battery including an intake air temperature sensor

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Toyota, Japan

Nobuyuki Tanaka