公开(公告)号：US11175344B2

公开(公告)日：2021-11-16

申请号：US16392786

申请日：2019-04-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuya Kodama ,  Masahiko Mitsui

IPC: G01R31/389 ,  H01M10/42 ,  H01M10/48 ,  G01R31/367

Abstract: A battery information processing system includes a storage device configured to store an equivalent circuit model which expresses an AC impedance of a battery module with a plurality of circuit constants. The plurality of circuit constants include first to eighth circuit constants. The first circuit constant is a junction inductance.
The second circuit constant is a junction resistance. The third circuit constant is a solution resistance and the fourth circuit constant is a charge transfer resistance. The fifth circuit constant is a CPE index of a diffusion resistance. The sixth circuit constant is a CPE constant of the diffusion resistance. The seventh circuit constant is a CPE index of an electric double layer capacitance. The eighth circuit constant is a CPE constant of the electric double layer capacitance.

公开(公告)号：US11480618B2

公开(公告)日：2022-10-25

申请号：US16722509

申请日：2019-12-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiko Mitsui ,  Junta Izumi ,  Juni Yasoshima

IPC: H02J7/00 ,  G01R31/36 ,  G01R31/389 ,  G01R31/3828

Abstract: A battery capacity estimation system executes a charging and discharging process (S1), an alternating current impedance acquiring process (S2 and S3), and a battery capacity estimating process (S4 to S6). The charging and discharging process involves charging and discharging a target secondary battery. The alternating current impedance acquiring process involves acquiring a measurement result of an alternating current impedance of a target secondary battery, by applying an alternating current signal within a specific frequency range to the target secondary battery after completion of the charging and discharging in the charging and discharging process and before a predetermined maximum waiting time elapses. The battery capacity estimating step involves estimating a battery capacity of the target secondary battery based on the measurement result of the alternating current impedance.

公开(公告)号：US11307257B2

公开(公告)日：2022-04-19

申请号：US16519138

申请日：2019-07-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Junta Izumi ,  Masahiko Mitsui ,  Juni Yasoshima ,  Kotaro Shibuya

IPC: G01R31/367 ,  G06N3/04 ,  G06N3/08 ,  G01R31/387

Abstract: A trained neural network model is a neural network model which has been trained based on Nyquist plots of a plurality of modules of which full charge capacity is within a reference range. A processing system determines to which of a first group of modules of which full charge capacity is within the reference range and a second group of modules of which full charge capacity is out of the reference range a module belongs, based on discriminant analysis in which at least one feature value extracted from the Nyquist plot of the module is adopted as an explanatory variable. When the processing system determines that the module M belongs to the first group, the processing system estimates a full charge capacity of the module by using the trained neural network model.

公开(公告)号：US11215671B2

公开(公告)日：2022-01-04

申请号：US16392786

申请日：2019-04-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuya Kodama ,  Masahiko Mitsui

IPC: G01R31/389 ,  H01M10/42 ,  H01M10/48 ,  G01R31/367

Abstract: A battery information processing system includes a storage device configured to store an equivalent circuit model which expresses an AC impedance of a battery module with a plurality of circuit constants. The plurality of circuit constants include first to eighth circuit constants. The first circuit constant is a junction inductance.
The second circuit constant is a junction resistance. The third circuit constant is a solution resistance and the fourth circuit constant is a charge transfer resistance. The fifth circuit constant is a CPE index of a diffusion resistance. The sixth circuit constant is a CPE constant of the diffusion resistance. The seventh circuit constant is a CPE index of an electric double layer capacitance. The eighth circuit constant is a CPE constant of the electric double layer capacitance.

公开(公告)号：US10923781B2

公开(公告)日：2021-02-16

申请号：US16223829

申请日：2018-12-18

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Masahiko Mitsui ,  Junta Izumi ,  Kazuya Kodama ,  Kenji Kimura

IPC: H01M10/54 ,  H01M10/34 ,  H01M4/04 ,  H01M10/44 ,  H01M10/48 ,  H01M10/633 ,  H01M10/42 ,  H01M10/613 ,  H01M2/12 ,  H01M10/6567

Abstract: A recovering device includes a charging chamber configured to overcharge a nickel-metal hydride battery. The charging chamber is provided with: a first water bath; a fixing device configured to fix the nickel-metal hydride battery with a portion of a container of the nickel-metal hydride battery being immersed in the water coolant in the first water bath; a pump; a dial gauge configured to detect a deformation amount of the container of the nickel-metal hydride battery; and a collection container configured to collect the gas exhausted from the exhaust valve of the nickel-metal hydride battery and exhaust the gas to outside the recovering device. The recovering device further includes a controller configured to perform the overcharging process for the nickel-metal hydride battery. The controller is configured to halt the overcharging process when the deformation amount of the container exceeds a threshold value.

公开(公告)号：US10466306B2

公开(公告)日：2019-11-05

申请号：US15655367

申请日：2017-07-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuya Kodama ,  Masahiko Mitsui ,  Junta Izumi

IPC: G01R31/36 ,  G01R31/385 ,  H01M10/6555 ,  H01M2/10 ,  H01M4/485 ,  H01M10/04 ,  H01M10/44 ,  H01M10/48 ,  H01M10/54 ,  G01R31/392 ,  H01M10/42 ,  H01M10/34

Abstract: (A) A used battery pack is prepared. (B) By disassembling the used battery pack, a cell etc. is collected from the used battery pack. The cell etc. are a nickel-metal hydride battery. (C) A state of charge of the collected cell etc. is adjusted to a state of charge within any of a first SOC range (0 to 3%), a second SOC range (3 to 20%), and a third SOC range (100 to 200%). (G) An amount of voltage lowering as a result of the cell etc. being left is calculated. (H) When the amount of voltage lowering is equal to or smaller than a reference value set in advance, the cell etc. is determined as a good product. (I) A battery pack including the cell etc. determined as the good product is manufactured.

公开(公告)号：US09413041B2

公开(公告)日：2016-08-09

申请号：US14171125

申请日：2014-02-03

Applicant: PRIMEARTH EV ENERGY CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke Koba ,  Sachio Takeda ,  Koichi Ichikawa ,  Masahiko Mitsui ,  Yasuhiro Takahashi

IPC: H02J7/00 ,  H01M10/44 ,  H01M2/12 ,  H01M10/34

CPC classification number: H01M10/44 ,  H01M2/1229 ,  H01M10/345 ,  H02J7/0057 ,  Y02E60/124

Abstract: In a method for adjusting a nickel-metal hydride storage battery, based on a correlation between a charge amount after valve opening and an increased amount of a discharge reserve capacity which are previously ascertained, the charge amount after valve opening corresponding to a target value of the set increased amount of the discharge reserve capacity is calculated and this calculated value is set as a target charge amount after valve opening. In a discharge reserve adjusting step, when a charge amount of the battery from the time when a safety valve device is opened after start of overcharge of the battery reaches the set target charge amount after valve opening, overcharge of the battery is terminated.

Abstract translation: 在镍氢蓄电池的调整方法中，基于阀开启后的充电量与预先确定的放电容量的增加量之间的相关关系，开阀后的充电量对应于 计算放电容量的设定增加量，将该计算值设定为开阀后的目标充电量。 在排出量调整步骤中，当从开启电池开始之后安全阀装置打开时的电池的充电量在阀打开之后达到设定的目标充电量时，电池的过充电终止。

公开(公告)号：US11327118B2

公开(公告)日：2022-05-10

申请号：US16718596

申请日：2019-12-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Junta Izumi ,  Masahiko Mitsui ,  Juni Yasoshima

IPC: G01R31/367 ,  G01R31/387 ,  G06N3/08 ,  G06N3/04

Abstract: A battery capacity estimation method includes first to third steps. The first step involves obtaining information about a Nyquist plot by a predetermined AC-IR measurement. The second step involves obtaining image data of a Nyquist diagram that is obtained when the AC-IR measurement is performed at a predetermined first temperature, based on the information about the Nyquist plot obtained in the first step and on an ambient temperature at which the AC-IR measurement is performed in the first step. The third step involves inputting the image data of the Nyquist diagram obtained in the second step to an input layer of a pre-trained neural network model, to obtain a battery capacity estimate value of a battery to be measured.

公开(公告)号：US11143706B2

公开(公告)日：2021-10-12

申请号：US16718829

申请日：2019-12-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Junta Izumi ,  Masahiko Mitsui ,  Juni Yasoshima

IPC: G01R31/367 ,  G01R31/387 ,  G01R31/36 ,  G06N3/04 ,  B60R16/033 ,  G01R31/389

Abstract: A battery capacity estimation method includes a first step and a second step. The first step is a step of obtaining image data of a Nyquist diagram drawn by a predetermined method, based on a Nyquist plot obtained by a predetermined AC-IR measurement. The second step is a step of obtaining a battery capacity estimate value of a battery to be measured by inputting the image data of the Nyquist diagram obtained in the first step into an input layer of a pre-trained neural network model.

公开(公告)号：US20190331737A1

公开(公告)日：2019-10-31

申请号：US16392786

申请日：2019-04-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuya KODAMA ,  Masahiko Mitsui

IPC: G01R31/389 ,  H01M10/42 ,  H01M10/48 ,  G01R31/367

Abstract: A battery information processing system includes a storage device configured to store an equivalent circuit model which expresses an AC impedance of a battery module with a plurality of circuit constants. The plurality of circuit constants include first to eighth circuit constants. The first circuit constant is a junction inductance.The second circuit constant is a junction resistance. The third circuit constant is a solution resistance and the fourth circuit constant is a charge transfer resistance. The fifth circuit constant is a CPE index of a diffusion resistance. The sixth circuit constant is a CPE constant of the diffusion resistance. The seventh circuit constant is a CPE index of an electric double layer capacitance. The eighth circuit constant is aCPE constant of the electric double layer capacitance.