公开(公告)号：US20240021853A1

公开(公告)日：2024-01-18

申请号：US18254908

申请日：2021-11-29

申请人： Robert Bosch GmbH

发明人： Tobias Reinhard Ott ,  Andreas Knoop ,  Wolfgang Sander

IPC分类号： H01M8/0438 ,  H01M8/04111 ,  H01M8/04223 ,  H01M8/04746 ,  H01M8/0432

CPC分类号： H01M8/0441 ,  H01M8/04111 ,  H01M8/04231 ,  H01M8/04761 ,  H01M8/0435

摘要： A fuel-cell system has at least one fuel cell, an oxidant line, a compressor, an exhaust-air line, a turbine, which is arranged in the exhaust-air line and is coupled to the compressor, an anode-purging line, which is connected to the exhaust-air line and has an anode-purging valve, and a control unit. The fuel-cell system is characterized in that a temperature-detecting unit is arranged at a turbine input, or upstream of the turbine input, for detecting the temperature of exhaust air flowing into the turbine, in that a pressure-detecting unit is coupled at least to the turbine input or a component lying upstream and is designed to detect a pressure of the exhaust air flowing into the turbine, in that the control unit is designed to ascertain a momentary mass flow of the exhaust air from the measured temperature of the exhaust air, the pressure upstream of the turbine and a specified turbine characteristic map, and in that the control unit is designed to activate the compressor and/or the turbine so as to achieve a minimum mass flow of the exhaust air.

公开(公告)号：US12123427B2

公开(公告)日：2024-10-22

申请号：US17766901

申请日：2020-08-27

申请人： Robert Bosch GmbH

发明人： Andreas Knoop

IPC分类号： F04D29/28 ,  F04D17/10 ,  F04D25/08 ,  F04D29/051 ,  F02B39/00 ,  F04D29/26 ,  F04D29/58 ,  H01M8/04111

CPC分类号： F04D29/284 ,  F04D17/10 ,  F04D25/082 ,  F04D29/0513 ,  F02B39/005 ,  F04D29/266 ,  F04D29/5806 ,  F04D29/582 ,  F04D29/584 ,  F04D29/5846 ,  H01M8/04111

摘要： The invention relates to a turbomachine (1) for supplying air to a fuel cell system, comprising at least one compressor wheel (3) conjointly connected to a shaft (2), and an electric motor (4) for driving the shaft (2), the compressor wheel (3) being connected via a hub portion (5) to a preferably hollow-cylinder-shaped shaft portion (6) of the shaft (2). According to the invention, at least one air channel (7, 8) is formed in the hub portion (5), by means of which air channel a compressor inlet (9) is connected to an annular space (10) on the side of the compressor wheel (3) facing away from the compressor inlet (9) such that substantially the same air pressure is present on both sides of the compressor wheel (3). The invention further relates to a method for operating a turbomachine (1).

公开(公告)号：US20240093695A1

公开(公告)日：2024-03-21

申请号：US17766901

申请日：2020-08-27

申请人： Robert Bosch GmbH

发明人： Andreas Knoop

IPC分类号： F04D29/28 ,  F04D17/10 ,  F04D25/08 ,  F04D29/051

CPC分类号： F04D29/284 ,  F04D17/10 ,  F04D25/082 ,  F04D29/0513 ,  F04D29/266

摘要： The invention relates to a turbomachine (1) for supplying air to a fuel cell system, comprising at least one compressor wheel (3) conjointly connected to a shaft (2), and an electric motor (4) for driving the shaft (2), the compressor wheel (3) being connected via a hub portion (5) to a preferably hollow-cylinder-shaped shaft portion (6) of the shaft (2). According to the invention, at least one air channel (7, 8) is formed in the hub portion (5), by means of which air channel a compressor inlet (9) is connected to an annular space (10) on the side of the compressor wheel (3) facing away from the compressor inlet (9) such that substantially the same air pressure is present on both sides of the compressor wheel (3). The invention further relates to a method for operating a turbomachine (1).

公开(公告)号：US12080922B2

公开(公告)日：2024-09-03

申请号：US17766271

申请日：2020-09-18

申请人： Robert Bosch GmbH

发明人： Andreas Knoop

IPC分类号： H01M8/04082

CPC分类号： H01M8/04197 ,  H01M2250/20

摘要： The invention relates to a fuel cell closing valve (36) having a valve closing body (5), which is electromagnetically movable from a first position to a second position by the energizing of an electrical coil (10) in order to close or open at least one medium passage of a fuel cell. In order to optimize the operation of the fuel cell system, the fuel cell closing valve (36) comprises two permanent magnets (13, 14), by means of which the valve closing body (5) can be held both in the first position and in the second position when the electrical coil (10) is in a currentless state.

公开(公告)号：US20240055629A1

公开(公告)日：2024-02-15

申请号：US17766271

申请日：2020-09-18

申请人： Robert Bosch GmbH

发明人： Andreas Knoop

IPC分类号： H01M8/04082

CPC分类号： H01M8/04197 ,  H01M2250/20

摘要： The invention relates to a fuel cell closing valve (36) having a valve closing body (5), which is electromagnetically movable from a first position to a second position by the energizing of an electrical coil (10) in order to close or open at least one medium passage of a fuel cell. In order to optimize the operation of the fuel cell system, the fuel cell closing valve (36) comprises two permanent magnets (13, 14), by means of which the valve closing body (5) can be held both in the first position and in the second position when the electrical coil (10) is in a currentless state.