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公开(公告)号:US20220255329A1
公开(公告)日:2022-08-11
申请号:US17590342
申请日:2022-02-01
发明人: Naoki Yanagizawa , Teckchiang Goh , Kazuo Ootsuka , Hiroshi Tsukada , Shuji Tomura , Junta Izumi , Kenji Kimura , Junichi Matsumoto , Masakazu Habu
摘要: A power supply system includes a power supply circuit that includes a plurality of battery modules, each of which has a battery. The power supply circuit is configured such that the batteries in the battery modules are connected to each other in series in response to a gate driving signal from a controller. An alternating current voltage having a different phase is output by temporally changing the number of the batteries connected in series in each of a plurality of power supply circuits.
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公开(公告)号:US11196271B2
公开(公告)日:2021-12-07
申请号:US16594753
申请日:2019-10-07
发明人: Shuji Tomura , Shigeaki Goto , Naoki Yanagizawa , Kyosuke Tanemura , Kazuo Ootsuka , Junta Izumi , Kenji Kimura , Toshihiro Katsuda , Kohei Matsuura , Takayuki Ban
IPC分类号: H02J7/00 , G01R31/392
摘要: Provided is a full-charge-capacity estimating device that has one or more of a plurality of battery modules, as battery-modules-to-be-measured, charged or discharged by means of a first switch element and a second switch element according to whether a power supply device is in a powering state or a regenerating state, measures an integrated current value and a change in the state-of-charge of the battery-module-to-be-measured, and then estimates the full charge capacity of the battery-module-to-be-measured from the integrated current value and the change in the state-of-charge.
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公开(公告)号:US12027893B2
公开(公告)日:2024-07-02
申请号:US17503489
申请日:2021-10-18
发明人: Junta Izumi , Kenji Kimura , Masakazu Habu , Hiroshi Tsukada , Atsuhiro Takahashi , Takashi Kojima , Shuji Tomura , Kazuo Ootsuka , Naoki Yanagizawa , Kyosuke Tanemura
CPC分类号: H02J7/0013 , H01M10/425 , H01M10/441 , H01M2010/4271
摘要: A power supply device includes: a first high-voltage line for exchanging the electric power externally; a second high-voltage line for applying current flowing in a direction opposite to the first high-voltage line; a plurality of batteries; a plurality of SUs, the SUs being provided corresponding to the respective batteries, switching a connection state of the batteries to the first high-voltage line, and being disposed in a circle; and an SCU that controls the SUs. The SU can switch between a first state in which the battery corresponding to the SU is connected in series to the first high-voltage line and a second state in which the battery is not connected to the first high-voltage line. The SCU controls the SUs to switch to the first state or the second state in accordance with a voltage of the electric power to be charged and discharged.
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公开(公告)号:US11635469B2
公开(公告)日:2023-04-25
申请号:US16656772
申请日:2019-10-18
发明人: Kazuo Ootsuka , Shuji Tomura , Naoki Yanagizawa , Kyosuke Tanemura , Shigeaki Goto , Junta Izumi , Kenji Kimura
IPC分类号: G01R31/387 , G01R31/36 , H02J7/00
摘要: Provided is a power supply device which includes a plurality of battery modules each having a secondary battery and in which the battery modules are connected in series with one another according to a gate driving signal from a controller. An SOC control target value that is a target value for states-of-charge of the battery modules is changed according to the number of the battery modules that are available to be connected in series.
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公开(公告)号:US11411414B2
公开(公告)日:2022-08-09
申请号:US16655042
申请日:2019-10-16
发明人: Shigeaki Goto , Kyosuke Tanemura , Shuji Tomura , Naoki Yanagizawa , Kazuo Ootsuka , Junta Izumi , Kenji Kimura
IPC分类号: H02J7/00
摘要: There is provided a power supply device including a plurality of battery modules, the battery modules being connected in series with one another according to a gate driving signal from a controller, the power supply device transmitting the gate driving signal from upstream of the series connection toward downstream of the series connection after the gate driving signal is delayed at delay circuits included in the respective battery modules, and returning the gate driving signal to the controller from a most downstream battery module, wherein the power supply device performs malfunction determination of the delay circuits based on a time difference from a transmission time of a signal from the controller to a reception time of the signal.
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公开(公告)号:US11101648B2
公开(公告)日:2021-08-24
申请号:US16682125
申请日:2019-11-13
发明人: Juni Yasoshima , Junta Izumi , Kenji Kimura , Toshihiro Katsuda , Kohei Matsuura , Junichi Matsumoto , Shuji Tomura , Shigeaki Goto , Naoki Yanagizawa , Kyosuke Tanemura , Kazuo Ootsuka , Takayuki Ban , Hironobu Nishi
摘要: A power supply system includes a main line, a plurality of sweep modules, and a control unit. Each sweep module includes a battery module and a power circuit module. The power circuit module switches between connection and disconnection between the battery module and the main line. The control unit executes sweep control for sequentially switching the battery modules which are to be connected to the main line. The control unit maintains connection of a refreshing module which is to be subjected to refreshing charging/discharging to the main line while sweep control is being executed in a state in which the refreshing module is excluded in at least one of outputting of electric power to the outside and inputting of electric power from the outside.
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公开(公告)号:US20240266860A1
公开(公告)日:2024-08-08
申请号:US18421135
申请日:2024-01-24
发明人: Yasuhiro Endo , Junta Izumi , Hironori Miki , Kenji Kimura , Takayuki Ban , Takuya Mizuno , Shuji Tomura , Naoki Yanagizawa , Kazuo Ootsuka , Hiroshi Tsukada
IPC分类号: H02J7/00
CPC分类号: H02J7/007186 , H02J7/0024 , H02J7/0025 , H02J7/0016
摘要: The battery string is configured so that a plurality of battery circuit modules can be connected in series. The drive circuit SU5 from the drive circuit SU0 of the battery circuit module transmits a gate signal for ON/OFF of the switch to the downstream drive circuit SU while delaying the gate signal by a predetermined delay time Td. When a particular battery circuit module (drive circuit SU4 in FIG. 4) is passed through, the delay time is switched from the delay time Td to the delay time Tds. The delay time Tds is longer than the delay time Td. As a result, the period of the gate signal, which is the “delay time×the number of battery circuit modules to be operated”, can be suppressed from becoming short (the increase in frequency can be suppressed), and an increase in loss can be suppressed.
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公开(公告)号:US11302970B2
公开(公告)日:2022-04-12
申请号:US16657969
申请日:2019-10-18
发明人: Kyosuke Tanemura , Shuji Tomura , Naoki Yanagizawa , Kazuo Ootsuka , Junta Izumi , Kenji Kimura
IPC分类号: H01M10/42 , G01R31/3842 , H01M10/44 , H01M10/48
摘要: A power supply system includes a controller, and a plurality of battery modules. The battery modules are connected in series, according to a gate drive signal from the controller, to provide series connection, and each of the battery modules has a disconnecting device configured to force the battery module to be disconnected from the series connection. The controller is configured to estimate the internal resistance of the battery module disconnected from the series connection by the disconnecting device, from a module voltage of the battery module before the battery module is disconnected from the series connection, a module voltage immediately after the battery module is disconnected, and a module current delivered from the battery module.
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公开(公告)号:US11218013B2
公开(公告)日:2022-01-04
申请号:US17012581
申请日:2020-09-04
发明人: Hiroshi Tsukada , Shuji Tomura , Kazuo Ootsuka , Naoki Yanagizawa , Kyosuke Tanemura , Junta Izumi , Kenji Kimura
摘要: A power supply system includes a plurality of battery modules and a control unit, and supplies electric power from the battery modules in an uppermost stage and a lowermost stage to a load. The control unit is configured to perform ON/OFF control for setting the battery modules to an ON state in an active time, setting the battery modules to an OFF state in a non-active time, and alternately repeating the active time and the non-active time. The control unit is configured to delay an ON/OFF control timing for the battery module in a lower stage adjacent to the battery module in a higher stage by a control delay time in comparison with the battery module in the higher stage. The control unit is configured to randomly determine the control delay times for the battery modules in lower stages than the battery module in the uppermost stage.
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公开(公告)号:US10985606B2
公开(公告)日:2021-04-20
申请号:US16686435
申请日:2019-11-18
发明人: Juni Yasoshima , Junta Izumi , Kenji Kimura , Toshihiro Katsuda , Kohei Matsuura , Junichi Matsumoto , Shuji Tomura , Shigeaki Goto , Naoki Yanagizawa , Kyosuke Tanemura , Kazuo Ootsuka , Takayuki Ban , Hironobu Nishi
摘要: A power supply system disclosed here is connected to an electric power system through a distribution device. The power supply system includes a plurality of strings connected to the distribution device and a failure detector. The failure detector of the power supply system is configured to perform a first process of connecting at least one battery module to a main line to set a voltage detected by a string voltage detector at a voltage higher than a predetermined voltage in a state where a switch disconnects the distribution device and the main line, a second process of sending a disconnecting signal for disconnecting all the sweep modules from the main line, and a third process of determining whether the voltage detected by the string voltage detector is lower than the predetermined determination voltage or not after the second process.
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