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公开(公告)号：US10910610B2
公开(公告)日：2021-02-02
申请号：US16088332
申请日：2017-05-11
Inventor： Kazufumi Nishikawa , Takashi Iida
IPC: H01M2/10 , H02J7/34 , H01M10/615 , H01M10/633 , H01M10/6563 , H01M10/647 , H01M10/6568 , H01M10/6571 , H01M10/627 , H01M10/613 , H01M10/48 , H02J1/10 , H02J7/00
Abstract: A power storage unit includes a plurality of power storage module groups connected in parallel, each having a plurality of power storage modules connected in series or in series and parallel. A plurality of temperature adjustment units is installed in each of the power storage module groups constituting the power storage unit, and cools or heats the power storage module groups. A management unit controls the plurality of temperature adjustment units corresponding to each of the power storage module groups to make resistances of the plurality of power storage module groups come close.
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公开(公告)号：US10811889B2
公开(公告)日：2020-10-20
申请号：US16275242
申请日：2019-02-13
Inventor： Shinya Nishikawa , Yusuke Itakura , Takashi Iida
IPC: H02J7/00 , H01M10/44 , H02H7/18 , G01R31/392 , H01M10/48 , G01R31/396 , G01R31/3835
Abstract: A smoothing unit smoothes a detected voltage of each power storage block based on previous data during a certain period. A calculator calculates a difference between a smoothing voltage of one power storage block in the n power storage blocks and a representative value of the smoothing voltages of the other power storage blocks or all the power storage blocks. A determination unit determines a power storage block whose difference against the representative value enlarges more than or equal to a set value during a predetermined period as a power storage block containing an abnormal power storage cell.
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公开(公告)号：US12071026B2
公开(公告)日：2024-08-27
申请号：US17145302
申请日：2021-01-09
Inventor： Jun Yamasaki , Changhui Yang , Masaharu Amaike , Takashi Iida
IPC: B60L15/20 , B60L3/00 , B60L50/50 , B60L58/12 , G01R31/36 , G01R31/374 , G01R31/3842 , G01R31/392 , H01M10/42 , H01M10/44 , H01M10/48 , H02J7/00
CPC classification number: B60L15/2081 , B60L3/0046 , B60L15/2045 , B60L50/50 , G01R31/3842 , G01R31/392 , H01M10/425 , H01M10/48 , H01M10/482 , H01M10/486 , H02J7/0063 , B60L2240/549 , B60L2240/642 , H01M2010/4271
Abstract: Controller determines an output limit value that defines an upper limit of a current or power recommended for suppressing cell deterioration based on a voltage, a current, and a temperature of each cell, and notifies host controller in electric vehicle of the determined output limit value. When electric vehicle climbs a hill, controller calculates a current value or power value to be discharged from power storage unit, the current value or power value being required for electric vehicle to climb the hill at a speed not less than a set minimum speed, while suppressing an amount of deterioration of cells within an allowable range, and when the calculated current value or power value is larger than the output limit value, replaces the output limit value with the calculated current value or power value.
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4.发明授权公开(公告)号：US12071022B2
公开(公告)日：2024-08-27
申请号：US17762292
申请日：2020-07-27
Inventor： Masaharu Amaike , Changhui Yang , Takashi Iida , Shinya Nishikawa , Takashi Matsuda
Abstract: An information processing method executed by a computer includes: acquiring an acceleration request for a mobile body that moves using a battery; calculating an output current in the battery based or the acceleration request; calculating a degradation degree of the battery based on the output current; generating an acceleration control instruction in response to the acceleration request in accordance with the degradation degree of the battery; and outputting the generated acceleration control instruction.
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公开(公告)号：US20190109306A1
公开(公告)日：2019-04-11
申请号：US16088332
申请日：2017-05-11
Inventor： Kazufumi Nishikawa , Takashi Iida
IPC: H01M2/10 , H01M10/613 , H01M10/615 , H01M10/627 , H01M10/633 , H01M10/647 , H01M10/6563 , H01M10/6568 , H01M10/6571 , H02J7/34
Abstract: A power storage unit includes a plurality of power storage module groups connected in parallel, each having a plurality of power storage modules connected in series or in series and parallel. A plurality of temperature adjustment units is installed in each of the power storage module groups constituting the power storage unit, and cools or heats the power storage module groups. A management unit controls the plurality of temperature adjustment units corresponding to each of the power storage module groups to make resistances of the plurality of power storage module groups come close.
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Patent Agency Ranking
公开(公告)号：US12072387B2
公开(公告)日：2024-08-27
申请号：US17311370
申请日：2019-11-13
Inventor： Shinya Nishikawa , Takashi Iida , Tohru Watanabe
IPC: G01R31/3842 , G01R31/36 , G01R31/367 , G01R31/385 , H01M4/485 , H01M10/0525 , H01M10/48
CPC classification number: G01R31/3842 , G01R31/3648 , G01R31/367 , G01R31/385 , H01M4/485 , H01M10/48 , H01M10/482 , H01M10/0525
Abstract: A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. The equivalent circuit model is a model including a diffusion resistance component for each of the plurality of materials for use in the positive electrode and the negative electrode.
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公开(公告)号：US11808815B2
公开(公告)日：2023-11-07
申请号：US17311373
申请日：2019-11-13
Inventor： Shinya Nishikawa , Tohru Watanabe , Takashi Iida
IPC: G01R31/3842 , G01R31/367 , B60L58/12 , H02J7/00 , H01M10/44 , H01M10/48 , H02J7/02
CPC classification number: G01R31/3842 , B60L58/12 , G01R31/367 , H01M10/44 , H01M10/48 , H02J7/0048 , H01M2220/20 , H02J7/02
Abstract: A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell, and a state of charge (SOC) of the battery cell is estimated based on the estimated OCV, SOC-OCV characteristics on a charge side of the battery cell, and SOC-OCV characteristics on a discharge side of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. Estimated is a current flowing through a material in which capacity-OCV characteristics are different between the charge side and the discharge side, the material being included in the plurality of materials contained in the mixed electrode, and a ratio between the SOC-OCV characteristics on the charge side and the SOC-OCV characteristics on the discharge side is determined based on the current.
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公开(公告)号：US11277011B2
公开(公告)日：2022-03-15
申请号：US16961656
申请日：2019-02-08
Inventor： Ryosuke Nagase , Shinya Nishikawa , Takashi Iida
IPC: H02J7/00 , H02J7/02 , G01R31/396 , G01R31/3835 , B60L58/22 , H01M10/48 , H01M10/42
Abstract: A voltage detector detects a voltage of each cell of a plurality of cells that are series-connected. A plurality of discharge circuits are respectively parallel-connected to the plurality of cells. A controller performs a control to equalize voltages or capacities of the plurality of cells to a target value by controlling discharge time of the plurality of discharge circuits, based on the voltages of the plurality of cells detected by the voltage detector. The controller sets the target value higher as an amount of change in the voltages of the plurality of cells in a predetermined period is larger.
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公开(公告)号：US11239519B2
公开(公告)日：2022-02-01
申请号：US16088332
申请日：2017-05-11
Inventor： Kazufumi Nishikawa , Takashi Iida
IPC: H01M2/10 , H01M50/20 , H02J7/34 , H01M10/615 , H01M10/633 , H01M10/6563 , H01M10/647 , H01M10/6568 , H01M10/6571 , H01M10/627 , H01M10/613 , H01M10/48 , H02J1/10 , H02J7/00
Abstract: A power storage unit includes a plurality of power storage module groups connected in parallel, each having a plurality of power storage modules connected in series or in series and parallel. A plurality of temperature adjustment units is installed in each of the power storage module groups constituting the power storage unit, and cools or heats the power storage module groups. A management unit controls the plurality of temperature adjustment units corresponding to each of the power storage module groups to make resistances of the plurality of power storage module groups come close.
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公开(公告)号：US20240239225A1
公开(公告)日：2024-07-18
申请号：US18561837
申请日：2022-01-25
Inventor： Masaaki Takegata , Makoto Hashimoto , Takashi Iida , Masaharu Amaike
CPC classification number: B60L53/62 , B60L53/66 , B60L58/12 , B60L2240/545 , B60L2240/547 , G16Y10/40 , G16Y20/30 , H01M10/44 , H01M2220/20
Abstract: A charge control map for chargers specifies the relationship between an upper limit current and charging conditions including at least one of the temperature of the chargers, the state of charge (SOC) of a secondary battery mounted in an electrically driven vehicle to be charged, the voltage of the secondary battery, and time. A charge control map for an electrically driven vehicle specifies the relationship between an upper limit current and charging conditions including at least one of the temperature of the secondary battery, the SOC of the secondary battery, the voltage of the secondary battery, and time. A charger selection unit (118) selects a charger used for charging any electrically driven vehicle of a plurality of electrically driven vehicles from among the plurality of chargers. The charger selection unit (118) selects at least one charger that least limits the charging performance of the electrically driven vehicle to be charged.
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