公开(公告)号：US20230073761A1

公开(公告)日：2023-03-09

申请号：US17901942

申请日：2022-09-02

Applicant: DENSO CORPORATION

Inventor： Naomi AWANO ,  Junichi NARUSE ,  Hironari SUZUKI

IPC: H02K1/14 ,  H02K1/2753 ,  H02K1/02 ,  H02K3/28

Abstract: A plurality of conductive films are arranged so that their thickness directions intersect with respect to a direction of a magnetic flux generated from a plurality of magnetic poles. Each of the plurality of conductive films is configured so that a conductivity in a longitudinal direction is larger than a conductivity in a thickness direction, and a conductivity in a longitudinal direction is larger than a conductivity in a width direction.

公开(公告)号：US20180267106A1

公开(公告)日：2018-09-20

申请号：US15921312

申请日：2018-03-14

Applicant: DENSO CORPORATION

Inventor： Yoshikazu KUSANO ,  Koji OHIRA ,  Naomi AWANO

IPC: G01R31/36

CPC classification number: G01R31/382

Abstract: A battery state estimating device periodically estimates a battery state of a secondary battery. The battery state estimating device has a current amount acquiring section, a threshold amount memory, a current amount comparing section, a cycle setting section, and a battery state estimating section. The current amount acquiring section acquires a current amount flowing in the secondary battery. At least one current threshold amount is stored in advance in the threshold amount memory. The current amount comparing section compares the current amount acquired by the current amount acquiring section with the current threshold amount stored in the threshold amount memory. The cycle setting section sets an estimation cycle for estimating the state of the secondary battery based on this comparison result. The battery state estimating section periodically estimates the battery state of the secondary battery based on the estimation cycle set by the cycle setting section.

公开(公告)号：US20180261889A1

公开(公告)日：2018-09-13

申请号：US15914312

申请日：2018-03-07

Applicant: DENSO CORPORATION

Inventor： Yoshikazu KUSANO ,  Koji OHIRA ,  Naomi AWANO

IPC: H01M10/42 ,  G01R31/36 ,  H01M10/48 ,  H01M10/44 ,  G01R19/165

CPC classification number: H01M10/4285 ,  G01R19/16542 ,  G01R31/3648 ,  G01R31/374 ,  G01R31/3828 ,  G01R31/3842 ,  H01M10/44 ,  H01M10/48

Abstract: A battery state estimating device estimates a battery state in a battery module having a plurality of secondary batteries. The battery state estimating device is configured to be able to change a number of targets which is a number of the secondary batteries subject to estimation of the battery state of the secondary battery based on a specific value acquired from the plurality of secondary batteries, or the battery state estimating device is configured to be able to change a calculation formula for estimating the battery state of the battery to a calculation formula with a small calculation load.

公开(公告)号：US20150127281A1

公开(公告)日：2015-05-07

申请号：US14534259

申请日：2014-11-06

Applicant: DENSO CORPORATION

Inventor： Yoshikazu KUSANO ,  Hisashi UMEMOTO ,  Naomi AWANO ,  Manabu YAMADA

IPC: G01R31/36 ,  G06N99/00

CPC classification number: G01R31/3648 ,  G01R31/367 ,  G01R31/382 ,  G06N20/00

Abstract: A battery characteristics learning apparatus is provided for calculating learning values of circuit constants of an equivalent circuit of a rechargeable battery. The apparatus includes: (1) means for acquiring values of terminal voltage of the battery sensed by voltage-sensing means and values of current of the battery sensed by current-sensing means and storing the acquired values in time series; (2) means for determining, based on the acquired values of the current, whether there has occurred a predetermined change in the current; and (3) means for calculating, when it is determined that the predetermined change has occurred, the learning values of the circuit constants based on those values of the terminal voltage and the current which are acquired at sampling time points or during sampling periods, each of the sampling time points and the sampling periods being set according to a corresponding one of time constants defined by the circuit constants.

Abstract translation: 提供一种用于计算可再充电电池的等效电路的电路常数的学习值的电池特性学习装置。 该装置包括：（1）用于获取由电压感测装置感测的电池的端子电压的值和由电流感测装置感测的电池的电流值并且以时间序列存储所获取的值的装置; （2）用于基于所获取的电流值确定当前是否发生预定变化的装置; 和（3）用于当确定发生了预定变化时计算基于在采样时间点或采样周期期间获得的端电压和电流值的电路常数的学习值的装置，每个 的采样时间点和采样周期根据由电路常数定义的相应的一个时间常数来设置。

公开(公告)号：US20130249490A1

公开(公告)日：2013-09-26

申请号：US13846530

申请日：2013-03-18

Applicant: DENSO CORPORATION

Inventor： Hisashi UMEMOTO ,  Naomi AWANO

IPC: H02J7/00

CPC classification number: H02J7/0021 ,  G01R31/367 ,  G01R31/3828 ,  G01R31/396 ,  H02J7/0078 ,  H02J7/008

Abstract: A charge/discharge current Iij where an absolute value of a difference of an estimated value (estimated cell voltage Vije(n)) of a terminal voltage of a battery cell and a detected value (cell voltage Vij(n)) that becomes equal to or less than a prescribed value ΔVth is searched by Newton's method. The charge/discharge current Iij searched in this way is equalized in all the battery cells. A charging rate SOCij(n) of the battery cell is calculated by an integration calculation of a calculated average value Ia (n).

Abstract translation: 充电/放电电流Iij，其中电池单元的端子电压的估计值（估计电池电压Vije（n））与检测值（单元电压Vij（n））的差的绝对值等于 或小于规定值，则用牛顿法搜索DeltaVth。 以这种方式搜索的充电/放电电流Iij在所有电池单元中均衡。 通过计算的平均值Ia（n）的积分计算来计算电池单元的充电率SOCij（n）。