公开(公告)号：US09873351B2

公开(公告)日：2018-01-23

申请号：US15647434

申请日：2017-07-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuji Kakeno ,  Mitsuhiro Nada ,  Kenji Umayahara ,  Yusuke Nishida

IPC: B60L11/18 ,  H01M8/04537 ,  H01M8/0432 ,  H01M8/04828 ,  H01M16/00 ,  H01M10/48

CPC classification number: B60L11/1887 ,  B60L11/1861 ,  H01M8/04373 ,  H01M8/04626 ,  H01M8/0494 ,  H01M10/486 ,  H01M16/006 ,  H01M2250/402 ,  Y02B90/12 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T90/34

Abstract: A fuel cell system to be installed on a vehicle includes a fuel cell, a secondary battery, an SOC detector that detects a temperature and a state of charge of the secondary battery, an accelerator position detector that detects an accelerator depressed amount, and a controller that controls power to be generated by the fuel cell. The controller includes: a required generation power calculator that calculates required generation power based on the accelerator depressed amount and the temperature and the state of charge of the secondary battery; and a maximum required power calculator that calculates maximum required power based on the accelerator depressed amount and the temperature and the state of charge of the secondary battery. The maximum required power includes allowable charging power correlated with a maximum value of charging power. If determining that a condition for rapid reduction in consumption power of a motor is satisfied, the controller sets the allowable charging power to zero and calculates the maximum required power. If the required generation power exceeds the maximum required power, the controller makes the fuel cell generate power responsive to the maximum required power.

公开(公告)号：US11799102B2

公开(公告)日：2023-10-24

申请号：US17182297

申请日：2021-02-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi Toida ,  Yusuke Nishida ,  Hiroyuki Tsunekawa ,  Masahiro Ito

IPC: H01M8/04223 ,  H01M8/04119 ,  H01M8/0432 ,  H01M8/04029 ,  H01M8/043 ,  H01M8/04694 ,  H01M8/04228 ,  H01M8/04955

CPC classification number: H01M8/04231 ,  H01M8/043 ,  H01M8/04029 ,  H01M8/0432 ,  H01M8/04179 ,  H01M8/04358 ,  H01M8/04694 ,  H01M8/04156 ,  H01M8/04228 ,  H01M8/04955 ,  H01M2250/20

Abstract: A fuel cell system includes: a fuel cell; a temperature acquisition unit that acquires a temperature at a specific position in a vehicle equipped with the fuel cell system; a purge unit that purges the fuel cell when an operation of the fuel cell is stopped; and a control unit that acquires the temperature at the specific position from the temperature acquisition unit at least once from when the fuel cell system is stopped until the fuel cell system is started again, and uses the temperature at the specific position to determine whether purging at a stop by the purge unit is necessary when the fuel cell system is stopped next.

公开(公告)号：US11611093B2

公开(公告)日：2023-03-21

申请号：US17224267

申请日：2021-04-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Mahiro Ozeki ,  Tomotaka Ishikawa ,  Yusuke Nishida

IPC: H01M8/04701 ,  H01M8/04223

Abstract: A fuel cell system includes a fuel cell, a first temperature sensor configured to acquire a first temperature that is a temperature of the fuel cell, a plurality of accessories that is used to operate the fuel cell, a second temperature sensor configured to acquire a second temperature that is a temperature of at least any one of the plurality of accessories, and a controller configured to perform control on the plurality of accessories to execute a warming-up operation of the fuel cell. The controller is configured to execute the warming-up operation when any of a first condition that the first temperature is lower than a predetermined first threshold temperature and a second condition that the first temperature is equal to or higher than the first threshold temperature and the second temperature is lower than a predetermined second threshold temperature is satisfied.

公开(公告)号：US11258084B2

公开(公告)日：2022-02-22

申请号：US16919646

申请日：2020-07-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke Nishida ,  Tomotaka Ishikawa

IPC: H01M8/04746 ,  H01M8/0438

Abstract: A fuel cell system includes: a fuel cell generating electricity when being supplied with anode gas and cathode gas; a supply channel through which the anode gas to be supplied to the fuel cell flows; a discharge channel through which anode-off gas discharged from the fuel cell flows; a discharge valve provided on the discharge channel and opened to discharge the anode-off gas; and a control section controlling opening/closing of the discharge valve. The control section calculates a valve open time of the discharge valve corresponding to a target value of a discharge amount of the anode-off gas by using an aperture ratio of the discharge channel and the target value, and closes the discharge valve based on the valve open time, the aperture ratio of the discharge channel being calculated from a first discharge amount of the anode-off gas, which is discharged by opening of the discharge valve.

公开(公告)号：US11367885B2

公开(公告)日：2022-06-21

申请号：US17221023

申请日：2021-04-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke Nishida ,  Masashi Toida ,  Tomotaka Ishikawa

IPC: H01M8/04 ,  H01M8/04537 ,  H01M8/04791 ,  H01M8/04119 ,  H01M8/04302

Abstract: A fuel cell system herein may include a battery configured to supply electric power to a fuel cell auxiliary device used for activating a fuel cell stack. When remaining electric energy in the battery is higher than an electric energy threshold upon activation of the fuel cell stack, a controller of the fuel cell system may start outputting current from the fuel cell stack after a fuel concentration in the fuel cell stack reaches a predetermined fuel concentration threshold, and when the remaining electric energy decreases below the electric energy threshold while the fuel concentration is being increased, the controller may start outputting current from the fuel cell stack regardless of the fuel concentration in the fuel cell stack. The current can be obtained from the fuel cell stack even when the remaining electric energy in the battery is low.

公开(公告)号：US09776526B2

公开(公告)日：2017-10-03

申请号：US14926254

申请日：2015-10-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuji Kakeno ,  Mitsuhiro Nada ,  Kenji Umayahara ,  Yusuke Nishida

IPC: B60L11/18 ,  H01M16/00 ,  H01M8/04828 ,  H01M8/0432 ,  H01M8/04537 ,  H01M10/48

CPC classification number: B60L11/1887 ,  B60L11/1861 ,  H01M8/04373 ,  H01M8/04626 ,  H01M8/0494 ,  H01M10/486 ,  H01M16/006 ,  H01M2250/402 ,  Y02B90/12 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T90/34

Abstract: A fuel cell system to be installed on a vehicle includes a fuel cell, a secondary battery, an SOC detector that detects a temperature and a state of charge of the secondary battery, an accelerator position detector that detects an accelerator depressed amount, and a controller that controls power to be generated by the fuel cell. The controller includes: a required generation power calculator that calculates required generation power based on the accelerator depressed amount and the temperature and the state of charge of the secondary battery; and a maximum required power calculator that calculates maximum required power based on the accelerator depressed amount and the temperature and the state of charge of the secondary battery. The maximum required power includes allowable charging power correlated with a maximum value of charging power. If determining that a condition for rapid reduction in consumption power of a motor is satisfied, the controller sets the allowable charging power to zero and calculates the maximum required power. If the required generation power exceeds the maximum required power, the controller makes the fuel cell generate power responsive to the maximum required power.

公开(公告)号：US11431007B2

公开(公告)日：2022-08-30

申请号：US17207832

申请日：2021-03-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi Toida ,  Mahiro Ozeki ,  Yusuke Nishida ,  Ryouichi Namba

IPC: H01M8/04 ,  H01M8/04223 ,  H01M8/04007 ,  H01M8/04225 ,  H01M8/04701 ,  H01M8/04992 ,  H01M8/0432 ,  H01M8/04302

Abstract: A fuel cell system includes a fuel cell stack, a temperature measurement unit, and a controller. The controller is configured to, when the stack temperature is equal to or lower than a predetermined first threshold temperature at the time of startup of the fuel cell system, control a heat generation amount per unit time of the fuel cell stack to a set heat generation amount to perform a warming-up operation until the stack temperature increases to a target temperature, and when the stack temperature is equal to or higher than a predetermined second threshold temperature, execute at least one of setting the target temperature to be lower than the target temperature when the stack temperature is lower than the second threshold temperature and setting the set heat generation amount to be smaller than the set heat generation amount when the stack temperature is lower than the second threshold temperature.

公开(公告)号：US11387475B2

公开(公告)日：2022-07-12

申请号：US17218361

申请日：2021-03-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi Toida ,  Tomotaka Ishikawa ,  Yusuke Nishida

IPC: H01M8/04858 ,  H01M8/04537 ,  H01M8/0432 ,  H01M8/04302

Abstract: A fuel cell system includes a fuel cell a temperature acquisition unit that acquires a temperature of the fuel cell, a cell unit voltage sensor that detects a voltage of each of fuel cell units, and a controller that controls the fuel cell system. The controller restricts an output current of the fuel cell when the voltage of the individual fuel cell unit becomes equal to or lower than a predetermined value in a warm-up operation, execute the warm-up operation when the temperature of the fuel cell is equal to or lower than a predetermined temperature, after the fuel cell system receives a start-up request, and stop an operation of the fuel cell system when a stop condition including that the voltage of the fuel cell unit is continuously equal to or lower than a predetermined voltage value for a predetermined time is satisfied after start of the warm-up operation.

公开(公告)号：US09796294B2

公开(公告)日：2017-10-24

申请号：US14940296

申请日：2015-11-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke Nishida ,  Kenji Umayahara ,  Mitsuhiro Nada

IPC: B60L15/20 ,  B60L11/18 ,  B60K1/04

CPC classification number: B60L15/20 ,  B60K1/04 ,  B60L11/18 ,  B60L11/1887 ,  B60L2210/12 ,  B60L2210/14 ,  B60L2240/423 ,  B60L2250/26 ,  B60L2250/28 ,  Y02T10/645 ,  Y02T10/7225 ,  Y02T10/7233 ,  Y02T10/7275 ,  Y02T90/34

Abstract: A vehicle driven by an electric motor, includes: an accelerator operation amount detection unit that detects an accelerator operation amount; a speed detection unit that detects a vehicle speed; and a control unit configured to calculate a required torque of the electric motor on a basis of the accelerator operation amount and the vehicle speed, calculate a torque increase rate, which is a required rate at which an effective torque for driving the electric motor is increased, on a basis of the required torque, and control the electric motor on a basis of the calculated torque increase rate. The control unit is configured to control the electric motor to operate at a predetermined torque increase rate until the effective torque reaches a predetermined threshold torque, and to reduce the torque increase rate below the predetermined torque increase rate after the effective torque reaches the predetermined threshold torque.