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1. 发明申请

US20220285707A1 CONTROL SYSTEMS AND METHODS TO MEET FUEL CELL FUEL DEMAND 有权
公开(公告)号：US20220285707A1
公开(公告)日：2022-09-08
申请号：US17191658
申请日：2021-03-03
申请人： Toyota Motor Engineering & Manufacturing North America, Inc. , Toyota Jidosha Kabushiki Kaisha
发明人： Jared M. Farnsworth , Daniel C. Folick , Shigeki Hasegawa , Nobukazu Mizuno
IPC分类号： H01M8/04746 , H01M8/04119 , H01M8/04223 , H01M8/04858
摘要： Systems and methods for controlling fluid flow in a fuel cell circuit of a vehicle. A system may have a fuel cell stack configured to receive hydrogen gas. The system may have a current sensor configured to detect current flowing through the fuel cell stack. The system may have a plurality of actuators, which may include at least one injector, a pump, and a shut valve. The system may have an electronic control unit (ECU). The ECU may estimate pressures of the hydrogen gas and non-hydrogen gases in the circuit. The ECU may determine a current increase rate based on the detected current. The ECU may apply a compensatory hydrogen gas stoic to a base hydrogen gas stoic to meet a target hydrogen gas stoic by controlling one or more of the actuators based on the estimated pressures when the current increase rate is above a predetermined threshold value.

2. 发明申请

US20140335435A1 FUEL CELL SYSTEM, AND CONTROL METHOD FOR FUEL CELL SYSTEM 审中-公开
标题翻译：燃料电池系统和燃料电池系统的控制方法
公开(公告)号：US20140335435A1
公开(公告)日：2014-11-13
申请号：US14364480
申请日：2012-12-06
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Nobukazu Mizuno , Yoshiaki Naganuma
IPC分类号： H01M8/04
CPC分类号： H01M8/04104 , H01M8/04097 , H01M8/04753 , H01M8/04761 , H01M8/04776 , H01M2250/20 , Y02T90/32
摘要： A fuel cell system includes: a fuel cell supplied with fuel gas for power generation; a fuel supply flow passage flowing fuel gas, supplied from a fuel supply source, to the fuel cell; a pressure regulating valve regulating a pressure of fuel gas flowing through the fuel supply flow passage; a fuel circulation flow passage returning gas, emitted from the fuel cell, to the fuel supply flow passage; a circulation pump delivering gas in the fuel circulation flow passage to the fuel supply flow passage; an emission valve emitting gas in the fuel circulation flow passage to an outside; and a control device controlling the pressure regulating valve, the circulation pump and the emission valve such that the sum of losses of crossover hydrogen, circulation pump power and purge hydrogen is minimum while a hydrogen stoichiometric ratio required for power generation of the fuel cell is ensured.
摘要翻译：燃料电池系统包括：燃料电池，其供应用于发电的燃料气体; 燃料供给流路，其将从燃料供给源供给的燃料气体流向所述燃料电池; 调节流经燃料供给流路的燃料气体的压力的压力调节阀; 燃料循环流路将从燃料电池排出的气体返回到燃料供给流路; 将燃料循环流路中的气体输送到燃料供给流路的循环泵; 在燃料循环流路中向外部排出气体的排出阀; 以及控制压力调节阀，循环泵和排放阀的控制装置，使得交叉氢，循环泵功率和净化氢的损失之和最小，同时确保燃料电池发电所需的氢化学计量比。

3. 发明授权

US11539062B2 Fuel cell system 有权
公开(公告)号：US11539062B2
公开(公告)日：2022-12-27
申请号：US17223811
申请日：2021-04-06
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Seiichi Tanaka , Nobukazu Mizuno , Kazuo Yamamoto
IPC分类号： H01M8/04 , H01M8/04746 , H01M8/04089
摘要： A fuel cell system includes a fuel cell, a fuel gas supply channel, a regulator, an injector, and a controller. The controller drives the regulator in conjunction with the injector. The controller compares a fuel gas flow amount necessary for the fuel cell to generate electricity with a predetermined fuel gas flow amount, selects the fuel gas flow amount that is larger, and issues commands to the regulator and the injector. The predetermined fuel gas flow amount is set to be larger than the fuel gas flow amount necessary for the fuel cell to generate the electricity when a generated current or output of the fuel cell is smaller than a predetermined threshold value.

4. 发明授权

US11611094B2 Fuel cell system and method of controlling fuel cell system 有权
公开(公告)号：US11611094B2
公开(公告)日：2023-03-21
申请号：US16269902
申请日：2019-02-07
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Yusuke Miyamoto , Shigeki Hasegawa , Naoki Tomi , Nobukazu Mizuno , Masafumi Yamagata
IPC分类号： H01M8/04746 , H01M8/04082 , H01M8/04111
摘要： A fuel cell system is equipped with a control unit that controls a rotational speed of the turbo compressor that supplies air to an air supply flow passage and an opening degree of at least one valve that adjusts a flow rate and a pressure of the air supplied to a fuel cell such that an operating point of the turbo compressor becomes a target operating point. The control unit sets the target operating point within an operating point range that is on the higher flow rate side than at least part of a first region where an amount of change in flow rate is larger than a predetermined value when a pressure ratio of the turbo compressor is changed by a predetermined amount at a same rotational speed, on a higher flow rate side than a surging region, when a predetermined condition is fulfilled.

5. 发明授权

US11569516B2 Fuel cell system 有权
公开(公告)号：US11569516B2
公开(公告)日：2023-01-31
申请号：US17538004
申请日：2021-11-30
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Nobukazu Mizuno , Shigeki Hasegawa , Miyu Haga , Seiichi Tanaka
IPC分类号： H01M8/04746 , H01M8/0438
摘要： A fuel cell system includes a fuel cell stack, a fuel gas supply path, an injector, an ejector, a circulation path, an outlet port pressure detection unit, and a control device. The control device stops driving the injector when an ejector outlet port pressure is equal to or more than a required upper limit value with the injector driven, and drives the injector when the ejector outlet port pressure is equal to or less than a required lower limit value with the injector stopped. The control device reduces the required upper limit value stepwise and reduces the required lower limit value stepwise in a range defined by a first target upper limit value and a second target upper limit value when a required load is varied from a first required load to a second required load and a load reduction amount is more than a first predetermined load.

6. 发明授权

US09509005B2 Fuel cell system 有权
标题翻译：燃料电池系统
公开(公告)号：US09509005B2
公开(公告)日：2016-11-29
申请号：US14498482
申请日：2014-09-26
申请人： Toyota Jidosha Kabushiki Kaisha
发明人： Yoshiaki Naganuma , Hiromi Tanaka , Osamu Yumita , Takayoshi Tezuka , Nobukazu Mizuno , Masashi Fuji
IPC分类号： H01M8/04 , H01M8/10
CPC分类号： H01M8/04701 , H01M8/04029 , H01M8/04253 , H01M8/04268 , H01M8/04298 , H01M8/0432 , H01M8/04358 , H01M8/04768 , H01M2008/1095 , Y02E60/50
摘要： A fuel cell system suppresses the deterioration of an electrolyte membrane of a fuel cell. The fuel cell system comprises: a temperature rise speed calculation unit for calculating a target temperature rise speed of the fuel cell using a temperature of the fuel cell and a water content of the fuel cell; and a drive control unit for controlling a drive of the cooling water pump using the temperature rise speed of the fuel cell and the target temperature rise speed calculated by the temperature rise speed calculation unit. The drive control unit controls the drive of the cooling water pump such that a circulation amount of the cooling water is decreased when the temperature rise speed of the fuel cell is below the target temperature rise speed and controls the drive of the cooling water pump such that the circulation amount of the cooling water is increased when the temperature rise speed of the fuel cell is equal to or greater than the target temperature rise speed.
摘要翻译：燃料电池系统抑制燃料电池的电解质膜的劣化。燃料电池系统包括：温度上升速度计算单元，用于使用燃料电池的温度和燃料电池的含水量来计算燃料电池的目标升温速度; 以及驱动控制单元，用于使用所述燃料电池的升温速度和由所述升温速度计算单元计算出的所述目标温度上升速度来控制所述冷却水泵的驱动。驱动控制单元控制冷却水泵的驱动，使得当燃料电池的升温速度低于目标温度上升速度时冷却水的循环量减少，并控制冷却水泵的驱动，使得当燃料电池的升温速度等于或大于目标温度上升速度时，冷却水的循环量增加。

7. 发明授权

US11548408B2 Control systems and methods to meet fuel cell fuel demand 有权
公开(公告)号：US11548408B2
公开(公告)日：2023-01-10
申请号：US17191658
申请日：2021-03-03
申请人： Toyota Motor Engineering & Manufacturing North America, Inc. , Toyota Jidosha Kabushiki Kaisha
发明人： Jared M. Farnsworth , Daniel C. Folick , Shigeki Hasegawa , Nobukazu Mizuno
IPC分类号： B60L58/30 , H01M8/04746 , H01M8/04119 , H01M8/04858 , H01M8/04223
摘要： Systems and methods for controlling fluid flow in a fuel cell circuit of a vehicle. A system may have a fuel cell stack configured to receive hydrogen gas. The system may have a current sensor configured to detect current flowing through the fuel cell stack. The system may have a plurality of actuators, which may include at least one injector, a pump, and a shut valve. The system may have an electronic control unit (ECU). The ECU may estimate pressures of the hydrogen gas and non-hydrogen gases in the circuit. The ECU may determine a current increase rate based on the detected current. The ECU may apply a compensatory hydrogen gas stoic to a base hydrogen gas stoic to meet a target hydrogen gas stoic by controlling one or more of the actuators based on the estimated pressures when the current increase rate is above a predetermined threshold value.

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