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    LITHIUM-ION SECONDARY BATTERY
    1.
    发明申请
    LITHIUM-ION SECONDARY BATTERY 审中-公开

    公开(公告)号：US20190296358A1

    公开(公告)日：2019-09-26

    申请号：US16351649

    申请日：2019-03-13

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hideaki OKA

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/587 ,  H01M4/36

    Abstract: A lithium-ion secondary battery includes at least a positive electrode and a negative electrode. The negative electrode is porous. The negative electrode includes a carbon fiber aggregate and a polymer film. The carbon fiber aggregate is an aggregate of a plurality of carbon fibers bound together in a three-dimensional fashion. The polymer film covers a surface of each of the carbon fibers. The positive electrode includes a group of particles and an electrolyte solution. The group of particles is dispersed in the electrolyte solution. The group of particles contains a positive electrode active material and a conductive material. Pores that are present within the negative electrode are filled with the positive electrode. The polymer film is swollen with the electrolyte solution.

    VEHICLE
    2.
    发明申请
    VEHICLE 有权
    车辆

    公开(公告)号：US20160023570A1

    公开(公告)日：2016-01-28

    申请号：US14805950

    申请日：2015-07-22

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kazuhisa TAKEDA ,  Hiroki TASHIRO ,  Hideaki OKA ,  Shuji TOMURA

    IPC: B60L11/18 ,  B60L7/12 ,  B60L11/04 ,  B60T7/04

    CPC classification number: B60L11/1864 ,  B60L3/0046 ,  B60L3/12 ,  B60L7/12 ,  B60L7/14 ,  B60L11/04 ,  B60L11/1859 ,  B60L11/1868 ,  B60L15/2009 ,  B60L2240/12 ,  B60L2240/16 ,  B60L2240/54 ,  B60L2240/549 ,  B60L2250/26 ,  B60T7/042 ,  G05G1/30 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7061 ,  Y02T10/7066 ,  Y02T10/72 ,  Y02T10/7275

    Abstract: A vehicle includes a controller. When a brake operation amount has increased, the controller calculates an estimated input value at the time when a main battery is charged in response to an increase in the brake operation amount, on the basis of a current speed and an amount of increase in brake operation amount. The controller discharges the main battery for charging an auxiliary battery at a current value that is calculated on the basis of the estimated input value by controlling an operation of a DC-DC converter before charging the main battery in response to an increase in the brake operation amount. Thus, it is possible to cancel a bias of salt concentration that is developed during charging by a bias of salt concentration that is developed during discharging, so, after the main battery has been charged, it is possible to suppress development of a bias of the salt concentration and suppress an increase in the internal resistance value of the main battery.

    Abstract translation: 车辆包括控制器。 当制动操作量增加时，控制器基于当前速度和制动操作的增加量来计算响应于制动操作量的增加而对主电池进行充电时的估计输入值 量。 控制器根据制动器操作的增加，以基于估计的输入值计算出的电流值对主电池进行放电，通过控制对主电池充电之前的DC-DC转换器的操作， 量。 因此，可以通过在放电期间产生的盐浓度的偏压来抵消在充电期间产生的盐浓度的偏差，因此，在主电池充电之后，可以抑制 盐浓度，抑制主电池的内阻值上升。

    BATTERY SYSTEM
    3.
    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。

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