公开(公告)号：US20150030932A1

公开(公告)日：2015-01-29

申请号：US14338635

申请日：2014-07-23

Applicant: DENSO CORPORATION

Inventor： Shuhei Yoshida ,  Daisuke Shibata

IPC: H01M4/38 ,  C01B33/32 ,  H01M10/054 ,  C01B33/06 ,  H01M4/134 ,  H01M10/0525

CPC classification number: C01B33/32 ,  C01B33/06 ,  H01M4/049 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M10/0525 ,  H01M10/054

Abstract: A method for producing an alkali-metal-including active material by pre-doping an active material with an alkali metal ion includes: mixing the alkali metal, an organic solvent with which the alkali metal is solvated, and a ligand having an electrophilic substitution reactivity to produce an alkali metal complex; and contacting and reacting the alkali metal complex and the active material with each other to pre-dope the active material with the alkali metal ion.

Abstract translation: 通过用碱金属离子预先掺杂活性物质来制造含碱金属的活性物质的方法包括：将碱金属，溶解有碱金属的有机溶剂与具有亲电取代反应性的配体混合 以制备碱金属络合物; 并使碱金属络合物和活性物质彼此接触和反应，以预先用碱金属离子掺杂活性物质。

公开(公告)号：US20140065480A1

公开(公告)日：2014-03-06

申请号：US14012186

申请日：2013-08-28

Applicant: DENSO CORPORATION

Inventor： Shuhei Yoshida ,  Daisuke Shibata

IPC: H01M4/133 ,  H01M4/131

CPC classification number: H01M4/133 ,  H01M2/0222 ,  H01M4/131 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/052 ,  H01M2220/30

Abstract: A positive-electrode active material for a non-aqueous electrolyte rechargeable battery includes a core portion and a shell portion. The core portion includes at least one of an inorganic oxide having a polyanionic structure and an inorganic compound oxide having a polyanionic structure and including a carbon. The shell portion includes a carbon and covers the core portion. The positive-electrode active material has a property that indicates a continuous pore distribution curve in a graph where a horizontal axis represents a pore diameter and a vertical axis represents a log differentiation pore volume. The positive-electrode active material is manufactured by wet-cracking the inorganic oxide or the inorganic compound oxide with an organic acid solution, and sintering a cracked substance in an inert atmosphere.

Abstract translation: 用于非水电解质可再充电电池的正极活性材料包括芯部和壳部。 核心部分包括具有聚阴离子结构的无机氧化物和具有聚阴离子结构并包括碳的无机复合氧化物中的至少一种。 壳部包括碳并覆盖芯部。 正极活性物质具有表示纵轴表示孔径且纵轴表示对数分解孔体积的曲线图中的连续孔分布曲线的性质。 正极活性物质通过有机酸溶液将无机氧化物或无机复合氧化物进行湿式裂化，并在惰性气氛中烧结破裂物质来制造。

公开(公告)号：US11585862B2

公开(公告)日：2023-02-21

申请号：US17188381

申请日：2021-03-01

Applicant: DENSO CORPORATION

Inventor： Yuta Shimonishi ,  Shuhei Yoshida

IPC: G01R31/392 ,  G01R31/367 ,  H01M10/42

Abstract: In the battery deterioration prediction system, a polarization calculation unit calculates negative and positive electrode polarizations from negative and positive electrode resistances, and an electrical current value flowing through the secondary battery. A CCP calculation unit calculates a negative electrode closed-circuit potential on the secondary battery negative electrode open circuit potential and the negative electrode polarization calculated by the polarization calculation unit, and calculates a positive electrode closed-circuit potential based on the secondary battery positive electrode open circuit potential and the positive electrode polarization calculated by the polarization calculation unit. A capacity prediction unit predicts the positive/negative electrode capacity, and positive/negative electrode SOC deviation capacity of a secondary battery based on at least one of the closed-circuit potential of the negative and positive electrodes calculated by the CCP calculation unit, and predicts the battery capacity based on the negative and positive electrode capacities, and the positive/negative electrode SOC capacity deviation.

公开(公告)号：US11422198B2

公开(公告)日：2022-08-23

申请号：US16418128

申请日：2019-05-21

Applicant: DENSO CORPORATION

Inventor： Yuta Shimonishi ,  Shuhei Yoshida

IPC: G01R31/392 ,  H01M10/42 ,  H01M10/0525 ,  H01M10/052 ,  H01M10/48 ,  H01M6/50 ,  H01M10/04

Abstract: To provide a battery service life estimation system capable of improving estimation accuracy, a new battery service life estimation system includes an intersection time estimation unit and a service life estimation unit. In view of a relation between a cumulative usage period and a capacity retention0 rate of a secondary battery containing a non-aqueous electrolyte, the intersection time estimation unit estimates a prediction line intersection time tx when an anode service life prediction line intersects with a cathode service life prediction line on a plane coordinate system. The service life estimation unit estimates a battery service life by using the anode service life prediction formula before a point of the prediction line intersection time tx and the cathode service life prediction formula described the prediction line intersection time tx.

公开(公告)号：US10553859B2

公开(公告)日：2020-02-04

申请号：US15133250

申请日：2016-04-20

Applicant: DENSO CORPORATION

Inventor： Shuhei Yoshida ,  Koji Ohira ,  Masaki Uchiyama ,  Daisuke Shibata

IPC: H01M4/36 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/54 ,  H01M4/56 ,  H01M4/57 ,  H01M4/62 ,  H01M10/0525

Abstract: An electrode active material for a nonaqueous electrolyte secondary battery includes: a core part including at least one of an inorganic oxide and a carbon-composite inorganic composite oxide; and a shell part for carbon coating on the core part. The electrode active material has a specific surface area of 6.0 m2/g or more. The electrode active material has a moisture content of 400 ppm or less, which is measured by a Karl Fischer method such that the electrode active material is heated in a heat-evaporating manner, and continuously maintained at 250° C. for 40 minutes without exposing to an atmosphere after the electrode active material is exposed to the atmosphere to absorb moisture to be saturated.

公开(公告)号：US09455480B2

公开(公告)日：2016-09-27

申请号：US14451767

申请日：2014-08-05

Applicant: DENSO CORPORATION

Inventor： Shuhei Yoshida ,  Daisuke Shibata

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/48 ,  G01R31/36 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/58 ,  H01M10/42

CPC classification number: H01M10/441 ,  G01R31/362 ,  H01M4/505 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/482 ,  H01M2010/4271 ,  H01M2220/20 ,  H02J7/0016 ,  H02J7/0073 ,  H02J7/008 ,  Y02E60/122 ,  Y02T10/7011 ,  Y02T10/7055

Abstract: An assembled battery includes a plurality of secondary cells, a first arithmetic operator, a second arithmetic operator, and a discharger. The first arithmetic operator calculates a voltage change rate of each of the secondary cells during charging/discharging thereof. The second arithmetic operator determines a discharge condition for each of the secondary cells from the voltage change rate calculated in the first arithmetic operator and a state of charge of each of the secondary cells. The discharger performs discharging of each of the secondary cells on the basis of the discharge condition when the assembled battery is neither being charged nor being discharged. The second arithmetic operator determines the discharge condition of each of the secondary cells such that each of the secondary cells after the discharging has the same state of charge.

Abstract translation: 组合电池包括多个二次电池，第一算术运算器，第二算术运算器和放电器。 第一算术运算器计算每个二次电池在其充电/放电期间的电压变化率。 第二算术运算器根据在第一算术运算器中计算的电压变化率和每个二次电池的电荷状态来确定每个二次电池的放电条件。 当组电池既不充电也不放电时，放电器基于放电条件执行每个二次电池的放电。 第二算术运算器确定每个二次电池的放电条件，使得放电之后的每个二次电池具有相同的充电状态。