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    CONTROL DEVICE FOR SECONDARY BATTERY, CONTROL METHOD OF SECONDARY BATTERY, BATTERY SYSTEM, AND MOTOR-DRIVEN VEHICLE
    1.
    发明申请
    CONTROL DEVICE FOR SECONDARY BATTERY, CONTROL METHOD OF SECONDARY BATTERY, BATTERY SYSTEM, AND MOTOR-DRIVEN VEHICLE 审中-公开

    公开(公告)号：US20190324093A1

    公开(公告)日：2019-10-24

    申请号：US16378998

    申请日：2019-04-09

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroki TASHIRO

    IPC: G01R31/3842 ,  H01M10/44 ,  H01M10/42 ,  B60L58/13

    Abstract: In a control device for a secondary battery, the secondary battery includes a monitoring sensor that detects battery information. An electronic control unit is configured to store first information. The electronic control unit is configured to set a lower-limit state of charge. The electronic control unit is configured to calculate a value of a rate of decrease of a full charging capacity using a value of the full charging capacity and to calculate a value of a state-of-charge variation using the value of the rate of decrease of the full charging capacity and the first information. The electronic control unit is configured to increase the lower-limit state of charge when the value of the state-of-charge variation is greater than a threshold value and to maintain the lower-limit state of charge when the value of the state-of-charge variation is less than the threshold value.

    SECONDARY BATTERY SYSTEM AND DETERIORATION STATE ESTIMATION METHOD FOR SECONDARY BATTERY
    2.
    发明申请
    SECONDARY BATTERY SYSTEM AND DETERIORATION STATE ESTIMATION METHOD FOR SECONDARY BATTERY 审中-公开

    公开(公告)号：US20190285702A1

    公开(公告)日：2019-09-19

    申请号：US16297902

    申请日：2019-03-11

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroki TASHIRO

    IPC: G01R31/392 ,  G01R31/389 ,  G01R31/3842 ,  G01R31/36 ,  H01M10/48

    Abstract: A secondary battery system includes a control device that estimates a reaction resistance based on the difference between a first impedance and a second impedance. Each of the first and second impedance is calculated based on first, second, and third change amount when the current value of the secondary battery is varied with corresponding period. The first change amount is a change amount of a detection value of a voltage sensor in a period in which the phase of the current value is inverted from an initial phase to an opposite phase, the second change amount is a change amount of the detection value of the voltage sensor in a period in which the phase of the current value is returned from the opposite phase to the initial phase, and the third change amount is a difference of the current value between the initial phase and the opposite phase.

    HEAT MANAGEMENT DEVICE
    3.
    发明申请
    HEAT MANAGEMENT DEVICE 有权

    公开(公告)号：US20210309075A1

    公开(公告)日：2021-10-07

    申请号：US17210204

    申请日：2021-03-23

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  SUBARU CORPORATION

    Inventor： Yoshio HASEGAWA ,  Hiroki TASHIRO ,  Makoto IKEGAMI

    IPC: B60H1/00 ,  B60H1/04 ,  B60H1/32

    Abstract: A heat management device may include: a heat circuit comprising a heat exchanger passage, a radiator passage communicating with the heat exchanger passage, and a battery passage communicating with the heat exchanger passage by bypassing the radiator passage; a heat exchanger cooling heat medium by heat exchange; a radiator exchanging heat between outside air and the heat medium in the radiator passage; a control valve changing a channel of the heat medium in the heat circuit; a pump pumping out the heat medium in the heat circuit from the heat exchanger passage to the battery passage and from the heat exchanger passage to the radiator passage; and a controller. The controller may execute: a heating operation for beating the heat medium in the battery passage by a battery; and a circulation operation for cooling the heat medium in the radiator passage by the radiator.

    ELECTRICALLY DRIVEN VEHICLE
    4.
    发明申请
    ELECTRICALLY DRIVEN VEHICLE 审中-公开

    公开(公告)号：US20190225086A1

    公开(公告)日：2019-07-25

    申请号：US16243631

    申请日：2019-01-09

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroki TASHIRO

    IPC: B60L3/00 ,  B60L58/26 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6561 ,  H01M10/48

    Abstract: In the event of an abnormality occurring in a temperature sensor that is used to detect the temperature of a battery, an electrically driven vehicle sets a drivable time by using a reference temperature of the battery and gives permission for emergency drive until a driving time of the electrically driven vehicle reaches the drivable time. When the reference temperature is used for the first time since the occurrence of the abnormality in the temperature sensor, a temperature detected before the occurrence of the abnormality in the temperature sensor is used as the reference temperature. When the reference temperature is used for the second or subsequent time since the occurrence of the abnormality in the temperature sensor, a temperature obtained by applying a resistance value based on an inter-terminal voltage of the battery and an electric current flowing in the battery, to a correlation between battery resistance and battery temperature is used as the reference temperature.

    BATTERY SYSTEM
    5.
    发明申请
    BATTERY SYSTEM 审中-公开
    电池系统

    公开(公告)号：US20170047622A1

    公开(公告)日：2017-02-16

    申请号：US15305266

    申请日：2015-04-16

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroki TASHIRO ,  Junko AMANO ,  Hideaki OKA ,  Shuji TOMURA

    IPC: H01M10/48

    Abstract: A battery system according includes a secondary battery, a temperature sensor and a controller. The secondary battery includes a power generation element configured to perform charging and discharging, an electrolyte, and a battery case. The electrolyte is impregnated inside the power generation element. The power generation element and the electrolyte is housed in the battery case. The temperature sensor is configured to specify a temperature of the secondary battery. The controller is configured to calculate a deviation in salt concentration in the electrolyte. The controller is configured to calculate a first flow velocity and a second flow velocity at each position in the power generation element in the flow direction of the electrolyte using an equation defining a flow of the electrolyte. The first flow velocity is a flow velocity when the electrolyte flows from an inside of the power generation element toward an outside of the power generation element. The second flow velocity is a flow velocity when the electrolyte flows from the outside of the power generation element toward the inside of the power generation element. The equation includes, as a parameter, a density of the electrolyte. The density is specified from the temperature. The density changes according to the temperature of the secondary battery. The controller is configured to calculate a salt concentration distribution in the power generation element based on the first flow velocity and the second flow velocity.

    Abstract translation: 一种电池系统，包括二次电池，温度传感器和控制器。 二次电池包括配置为执行充电和放电的发电元件，电解质和电池壳体。 电解液浸渍在发电元件内部。 发电元件和电解质容纳在电池壳体中。 温度传感器被配置为指定二次电池的温度。 控制器被配置为计算电解质中盐浓度的偏差。 控制器被配置为使用限定电解质流动的方程来计算电解液流动方向上的发电元件的每个位置处的第一流速和第二流速。 第一流速是当电解质从发电元件的内部朝向发电元件的外部流动时的流速。 第二流速是当电解质从发电元件的外部朝向发电元件的内部流动时的流速。 作为参数，该方程式包括电解质的密度。 密度由温度指定。 密度根据二次电池的温度而变化。 控制器被配置为基于第一流速和第二流速来计算发电元件中的盐浓度分布。

    BATTERY SYSTEM
    7.
    发明申请
    BATTERY SYSTEM 审中-公开
    电池系统

    公开(公告)号：US20150338468A1

    公开(公告)日：2015-11-26

    申请号：US14758890

    申请日：2013-02-01

    Applicant: Toyota Jidosha Kabushiki Kaisha

    Inventor： Hiroyuki KAIYA ,  Kenji TAKAHASHI ,  Yuji NISHI ,  Hiroki TASHIRO

    IPC: G01R31/36

    CPC classification number: G01R31/3679 ,  G01R31/3606 ,  G01R31/3648 ,  H01M10/486 ,  H02J7/00

    Abstract: A battery system includes a chargeable and dischargeable secondary battery and a controller that estimates the deterioration state or the charge state of the secondary battery. When estimating the deterioration state or the charge state, the controller uses an average ion concentration between a positive electrode and a negative electrode. The average ion concentration varies depending on an electric current flowing through the secondary battery. The average ion concentration between the electrodes can be calculated with a computing expression that includes a surface pressure of the secondary battery as a variable. The surface pressure of the secondary battery can be detected by a pressure sensor. The surface pressure of the secondary battery can also be estimated from an electric current flowing through the secondary battery.

    Abstract translation: 电池系统包括可充放电二次电池和估计二次电池的劣化状态或充电状态的控制器。 当估计劣化状态或充电状态时，控制器使用正极和负极之间的平均离子浓度。 平均离子浓度根据流过二次电池的电流而变化。 可以用包含二次电池的表面压力作为变量的计算表达式来计算电极之间的平均离子浓度。 二次电池的表面压力可以通过压力传感器检测。 二次电池的表面压力也可以从流过二次电池的电流来估计。

    HEAT MANAGEMENT DEVICE
    8.
    发明申请
    HEAT MANAGEMENT DEVICE 有权

    公开(公告)号：US20210300154A1

    公开(公告)日：2021-09-30

    申请号：US17210074

    申请日：2021-03-23

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  SUBARU CORPORATION

    Inventor： Yoshio HASEGAWA ,  Hiroki TASHIRO ,  Makoto IKEGAMI

    IPC: B60H1/32 ,  B60H1/00

    Abstract: A heat management device may include: a first heat circuit in which first heat medium circulates; a second heat circuit in which second heat medium circulates; a first radiator disposed in the first heat circuit; a second radiator disposed in the second heat circuit; and vehicle equipment exchanging heat with the first heat medium. The first and the second radiator may be disposed such that the first heat medium and the second heat medium are able to exchange heat with each other, the first heat medium may be heated by heat exchange between the first and the second heat medium in a case where a temperature of the second heat medium flowing into the second radiator is higher than a temperature of the first heat medium flowing into the first radiator, and the first heat medium heats the vehicle equipment by exchanging heat with the vehicle equipment.

    FIXING STRUCTURE AND ELECTRICAL CONNECTION BOX
    10.
    发明申请
    FIXING STRUCTURE AND ELECTRICAL CONNECTION BOX 审中-公开

    公开(公告)号：US20180102635A1

    公开(公告)日：2018-04-12

    申请号：US15722024

    申请日：2017-10-02

    Applicant: Yazaki Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroki TASHIRO ,  Nobutaka KANEKO ,  Fumiyoshi OHASHI ,  Kouji YONEZU ,  Yuya YOSHIKAWA

    IPC: H02G3/08 ,  B60R16/02

    CPC classification number: H02G3/08 ,  B60R16/02 ,  B60R16/0238 ,  H02G3/10

    Abstract: A fixing structure includes an attaching portion, a nut, and a spacer. The attaching portion has an attaching hole through which an attaching bolt provided to a vehicle body is inserted. The nut fixes the attaching portion to the vehicle body by being tightened to the attaching bolt with a washer interposed between the nut and the attaching portion. The spacer is disposed between an inner circumferential surface of the attaching hole and an outer circumferential surface of the attaching bolt, and is in contact with the vehicle body and the washer in an axial direction of the attaching bolt in a state where the attaching bolt and the nut are tightened. The spacer has an opening on a cylindrical side surface thereof and is capable of rotating around the axial direction of the attaching bolt in a state where the attaching bolt is inserted into the opening.

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