公开(公告)号：US20240372140A1

公开(公告)日：2024-11-07

申请号：US18774445

申请日：2024-07-16

Applicant: DENSO CORPORATION

Inventor： Shuhei YOSHIDA ,  Hitoshi ONODERA ,  Yuta SHIMONISHI

IPC: H01M10/0565 ,  H01M4/02 ,  H01M4/134 ,  H01M10/0525

Abstract: An electricity storage device includes a negative electrode, a positive electrode, a polymer electrolyte layer provided between the negative electrode and the positive electrode and having lithium ion conductivity, an electrolyte layer provided between the negative electrode and the positive electrode and having lithium ion conductivity, and an alloy-forming layer capable of forming an alloy with lithium. The polymer electrolyte layer contains cyclic polycarbonate and chain polycarbonate. The polymer electrolyte layer contains lithium salt. Concentration of lithium salt in the polymer electrolyte layer is 3 mol/L or more. The polymer electrolyte layer and the alloy-forming layer are formed at least on a surface of the electrolyte layer facing the negative electrode. The alloy-forming layer is located closer to the electrolyte layer than the polymer electrolyte layer. The polymer electrolyte layer is located closer to the negative electrode than the alloy-forming layer.

公开(公告)号：US20230417840A1

公开(公告)日：2023-12-28

申请号：US18363511

申请日：2023-08-01

Applicant: DENSO CORPORATION

Inventor： Hiroyoshi YAMAMOTO ,  Shuhei YOSHIDA ,  Yuta SHIMONISHI ,  Sho NAGASHIMA ,  Kazuya TAKIZAWA

IPC: G01R31/396 ,  G01R31/392 ,  G01R31/3842 ,  G01R31/3828 ,  G01R31/36

CPC classification number: G01R31/396 ,  G01R31/392 ,  G01R31/3648 ,  G01R31/3828 ,  G01R31/3842

Abstract: A battery management system includes a usage history acquisition unit, a deterioration estimation unit, a battery load acquisition unit, a deterioration change degree identification unit, and a battery management unit. The usage history acquisition unit acquires usage history information. The deterioration estimation unit estimates a current deterioration state and a deterioration factor of the secondary battery based on the usage history information. The battery load acquisition unit acquires battery load information indicating a future battery load. The deterioration change degree identification unit identifies a deterioration change degree by using the current deterioration state, the deterioration factor and the battery load information of the secondary battery. The battery management unit uses the deterioration change degree to associate secondary batteries with future use modes so that an evaluation value indicating a degree of deterioration of the secondary battery in use devices becomes a minimum value.

公开(公告)号：US20210268927A1

公开(公告)日：2021-09-02

申请号：US17182897

申请日：2021-02-23

Applicant: DENSO CORPORATION

Inventor： Yuta SHIMONISHI ,  Shuhei YOSHIDA

IPC: B60L53/62 ,  H01M10/42 ,  G05B17/02 ,  G07C5/00 ,  B60L53/66 ,  B60L58/12 ,  B60L58/16 ,  B60L53/63

Abstract: An information calculation system acquires a battery load history of a secondary battery that has been used. The information calculation system calculates first degradation states of a plurality of battery constituent elements of the secondary battery, based on the battery load history acquired and a plurality of degradation factors related to each of the battery constituent elements. The information calculation system acquires estimated load information on a load that is estimated to act on the secondary battery when the secondary battery is used in a future application. The information calculation system calculates future second degradation states of the plurality of battery constituent elements of the secondary battery when the secondary battery is used in the future application, based on the first degradation states related to the battery constituent elements calculated, the estimated load information acquired, and the plurality of degradation factors related to the battery constituent elements.

公开(公告)号：US20240385250A1

公开(公告)日：2024-11-21

申请号：US18788857

申请日：2024-07-30

Applicant: DENSO CORPORATION

Inventor： Shuhei YOSHIDA ,  Yuta SHIMONISHI ,  Kazuya TAKIZAWA

IPC: G01R31/367 ,  G01R31/389 ,  G01R31/392

Abstract: A SOH indicating a deterioration degree of a secondary battery is estimated. SOH information of the secondary battery is acquired. Information indicating a battery state of the secondary battery and information indicating the battery state having a correlation with the SOH higher than a predetermined correlation are acquired. A SOH estimation model is built by synthesizing a regression model using a variance-covariance matrix, in which the SOH information is defined as an output, and the information indicating the battery state that has the correlation with the SOH higher than the predetermined correlation is defined as an input The SOH is estimated by inputting information indicating a current battery state of the secondary battery into the SOH estimation model.

公开(公告)号：US20230375637A1

公开(公告)日：2023-11-23

申请号：US18363558

申请日：2023-08-01

Applicant: DENSO CORPORATION

Inventor： Shuhei YOSHIDA ,  Kazuya TAKIZAWA ,  Yuta SHIMONISHI ,  Hiroyoshi YAMAMOTO ,  Sho NAGASHIMA

IPC: G01R31/392 ,  H01M10/42 ,  G01R31/36 ,  G16Y40/20 ,  G16Y20/20

CPC classification number: G01R31/392 ,  H01M10/4285 ,  G01R31/3648 ,  G16Y40/20 ,  G16Y20/20 ,  H01M2220/20

Abstract: A battery diagnostic system includes an interpolation processing unit, a degradation estimation unit, a degradation prediction unit, and an output unit. When a part of the battery load history is missing, the interpolation processing unit interpolates the missing part using the rest of the constituent data. The degradation estimation unit estimates, based on the battery load history, a present degradation state of the secondary battery and a cause of degradation that has brought about the degradation state. The degradation prediction unit predicts, using a predicted battery load, the present degradation state and the cause of degradation of the secondary battery, a predicted degradation state of the secondary battery that will occur in the future upon having been used in the use mode. The output unit outputs the predicted degradation state of the secondary battery.

公开(公告)号：US20170018771A1

公开(公告)日：2017-01-19

申请号：US15124142

申请日：2015-03-20

Applicant: DENSO CORPORATION

Inventor： Yoshinori SATOU ,  Shigeki KOMINE ,  Nobuo YAMAMOTO ,  Yuta SHIMONISHI ,  Yuki TACHIBANA

IPC: H01M4/525 ,  H01M4/131 ,  C30B29/68 ,  H01M4/66 ,  H01M10/0525 ,  C30B29/32 ,  H01M4/505 ,  H01M4/62

CPC classification number: H01M4/525 ,  C30B29/32 ,  C30B29/68 ,  H01B1/08 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/505 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode material includes Li2NiαM1ηM2βO4-γ, where 0

Abstract translation: 正极材料包括Li2Ni1M1ηM2βO4-γ，其中0 <（α+η）≤2; 0≤η<0.5; 0 <β≤2; 0≤γ≤1; 1≤（α+η+β）≤2.1; 0.8 <β/（α+η）; M1是Mn; M2是选自Ge和Sn中的至少一种; Ni和M1具有六协调的局部结构。 正极材料用于非水电解质二次电池用正极和非水电解质二次电池。

公开(公告)号：US20150072239A1

公开(公告)日：2015-03-12

申请号：US14481132

申请日：2014-09-09

Applicant: DENSO CORPORATION

Inventor： Syuuhei YOSHIDA ,  Yuta SHIMONISHI ,  Daisuke SHIBATA

IPC: H01M4/136 ,  H01M4/04 ,  H01M4/1397 ,  H01M4/58 ,  H01M4/62

CPC classification number: H01M4/136 ,  C01B25/30 ,  C01B25/377 ,  C01B25/45 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  Y02T10/7011

Abstract: A positive electrode active material includes a conductive matrix and a lithium metal compound of a polyanion structure provided on the surface of the conductive matrix. The lithium metal compound is expressed as LiαM0βXηO4-γZγ, in which: M0 is one or more selected from Mn, Co, Ni, Fe, Cu, Cr, Mg, Ca, Zn, and Ti; X is one or more selected from P, As, Si, Mo, and Ge; Z is one or more selected from Al, Mg, Ca, Zn, and Ti, being optionally includable; α satisfies 0≦α≦2.0; β satisfies 0≦β≦1.5; η satisfies 1≦η≦1.5; and γ satisfies 0≦γ≦1.5.

Abstract translation: 正极活性材料包括导电基体和设置在导电基体表面上的聚阴离子结构的锂金属化合物。 锂金属化合物表示为LiαM0＆bgr; X＆eegr; O4-γZγ，其中：M0是选自Mn，Co，Ni，Fe，Cu，Cr，Mg，Ca，Zn和Ti中的一种或多种; X是选自P，As，Si，Mo和Ge中的一种或多种; Z是选自Al，Mg，Ca，Zn和Ti中的一种或多种，​​可选地包括; α满足0＆nlE;α＆nlE; 2.0; ＆bgr 满足0＆nlE;＆bgr;＆nlE; 1.5; ＆eegr 满足1＆nlE;＆eegr;＆nlE; 1.5; γ满足0＆nlE;γ＆nlE; 1.5。

公开(公告)号：US20210270907A1

公开(公告)日：2021-09-02

申请号：US17188381

申请日：2021-03-01

Applicant: DENSO CORPORATION

Inventor： Yuta SHIMONISHI ,  Shuhei YOSHIDA

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

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：US20200259224A1

公开(公告)日：2020-08-13

申请号：US16785982

申请日：2020-02-10

Applicant: DENSO CORPORATION

Inventor： Yuta SHIMONISHI ,  Shuhei YOSHIDA ,  Daisuke SHIBATA ,  Hiroyoshi YAMAMOTO

IPC: H01M10/613 ,  H01M2/10 ,  H01M10/647 ,  H01M10/6557 ,  H01M10/0525 ,  H01M10/617

Abstract: A battery structure includes a plurality of batteries each made of lithium-ion secondary battery; and a plurality of arrangement portions in which the plurality of batteries are arranged. The plurality of arrangement portions are divided into two groups of: a upper heat transfer group having heat transfer orders higher than a center value of the heat transfer orders, where the heat transfer orders are respective amount of heat transfer from the batteries being ranked in descending order; and a lower heat transfer group having the heat m transfer orders lower than the center value. A battery among the plurality of batteries showing the highest value of a lithium deposition tolerance which represents a degree of lithium being unlikely to deposit during charge/discharge operation, is disposed in a high tolerance arrangement portion in the plurality of arrangement portions, the high tolerance arrangement portion belonging to the upper heat transfer group.

公开(公告)号：US20200041576A1

公开(公告)日：2020-02-06

申请号：US16530640

申请日：2019-08-02

Applicant: DENSO CORPORATION

Inventor： Yoshinori SATO ,  Shuhei YOSHIDA ,  Nobuo YAMAMOTO ,  Yuta SHIMONISHI

IPC: G01R31/392 ,  G01R31/389 ,  G01R31/367

Abstract: An apparatus for estimating a degradation degree of a secondary battery includes a pulse current applying unit that applies a pulse current; a voltage acquiring unit that acquires a charge voltage and a discharge voltage which are produced at the secondary battery by applying the pulse current; a relative value calculation unit that calculates a relative value between the charge voltage and the discharge voltage; a correlation storage unit that stores a correlation between a relative value between the charge voltage and the discharge voltage, and a degradation degree of the secondary battery; and a degradation degree estimation unit that obtains a degradation degree of the secondary battery from the correlation storage unit, based on the relative value calculated by the relative value calculation unit.