公开(公告)号：US20170254857A1

公开(公告)日：2017-09-07

申请号：US15507912

申请日：2015-09-07

Applicant: NEC Corporation

Inventor： Junichi MIYAMOTO ,  Yuichi IMAMURA ,  Shingo TAKAHASHI ,  Sho OHTANI ,  Hiroshi KAJITANI

IPC: G01R31/36

CPC classification number: G01R31/388 ,  G01R31/3842

Abstract: A control device of the present invention includes: an OCV estimating unit that estimates, based on a voltage value and a current value of a controlled device, an OCV of the controlled device; a capacity calculating unit that calculates an integrated capacity of the controlled device based on the current value of the controlled device; and a control unit that controls discharging and charging of the controlled device, and calculates a full capacity of the controlled device based on: a first SOC and a second SOC at a predetermined first OCV and a predetermined second OCV during the discharging or the charging of the controlled device; a first integrated capacity and a second integrated capacity at the first OCV and the second OCV during the discharging; and a third integrated capacity and a fourth integrated capacity at the second OCV and the first OCV during the charging.

公开(公告)号：US20170254853A1

公开(公告)日：2017-09-07

申请号：US15505417

申请日：2015-09-02

Applicant: NEC Corporation

Inventor： Yuichi IMAMURA ,  Junichi MIYAMOTO ,  Shingo TAKAHASHI ,  Sho OHTANI

IPC: G01R31/36 ,  H02J3/32 ,  H02J7/00 ,  H01M10/44 ,  H01M10/48

Abstract: An information processing device according to the present invention includes: a reception unit which receives a state of an electricity storage unit which stores electric power; a charge and discharge control unit which controls charging in a charging period that includes a first period in which charging is performed from a second lower-limit voltage to a first lower-limit voltage and a second period in which charging is performed from the first lower-limit voltage to a first upper-limit voltage; and a capacity computation unit which calculates a capacity of the electricity storage unit, based on the state in the second period.

公开(公告)号：US20170214266A1

公开(公告)日：2017-07-27

申请号：US15515066

申请日：2015-09-18

Applicant: NEC Corporation

Inventor： Shingo TAKAHASHI ,  Junichi MIYAMOTO ,  Yuichi IMAMURA ,  Sho OHTANI

IPC: H02J7/00 ,  G01R31/36

CPC classification number: H02J7/0068 ,  G01R31/392 ,  H02J7/0019 ,  H02J7/0021 ,  H02J7/0047 ,  H02J7/007 ,  H02J2007/005

Abstract: A control device for measuring the capacity of a lithium ion secondary battery without inconveniencing the user of the secondary battery, wherein the control device controls operations for a plurality of charge and discharge cycles comprising charging of the secondary battery and discharging of the secondary battery following thereafter. The control device acquires a first voltage which indicates the maximum voltage value in a first charge/discharge cycle, a discharge end voltage which indicates a voltage in the period between the end of discharge in the first charge/discharge cycle and the start of the next charge, and a reference voltage which indicates a voltage at which capacity measurement of the secondary battery is started. When the discharge end voltage is higher than the reference voltage, a second voltage which indicates the maximum voltage value in a second charge/discharge cycle, which is the next cycle after the first charge/discharge cycle, is set lower than the first voltage.

公开(公告)号：US20180128880A1

公开(公告)日：2018-05-10

申请号：US15574518

申请日：2016-05-19

Applicant: NEC Corporation

Inventor： Junichi MIYAMOTO ,  Hiroshi KAJITANI ,  Sho OHTANI

IPC: G01R31/36 ,  H01M10/48 ,  H01M10/44 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R31/36 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  H02J7/0047 ,  H02J7/007 ,  H02J7/0073 ,  H02J2007/005

Abstract: A storage battery control device includes: a voltage measurement means for measuring terminal voltage of a storage battery; a current measurement means for measuring charge current and discharge current of the storage battery; a capacity calculation means for calculating a cumulative capacity of the storage battery by using the charge current measured by a current measurement unit; a control means for determining an operation of the storage battery, based on at least one of the terminal voltage, the charge current, the discharge current, and the cumulative capacity; and a charging/discharging control means for causing the storage battery to operate in accordance with an instruction from the control means, and the charging/discharging control means causes the storage battery to charge by a first charging method from a discharge end voltage to a first charge voltage, to charge by a second charging method at the first charge voltage, to charge by the first charging method from the first charge voltage to a second charge voltage, and to charge by the second charging method at the second charge voltage.

公开(公告)号：US20170261561A1

公开(公告)日：2017-09-14

申请号：US15509647

申请日：2015-09-08

Applicant: NEC Corporation

Inventor： Yuichi IMAMURA ,  Junichi MIYAMOTO ,  Shingo TAKAHASHI ,  Sho OHTANI

IPC: G01R31/36 ,  H01M10/48 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R31/367 ,  H01M10/48 ,  H01M10/486 ,  H02J7/0052 ,  H02J2007/005

Abstract: Through the present invention, a residual capacity is measured with good precision even when a system for calculating the residual capacity of a storage cell on the basis of voltage and a system for calculating the residual capacity of a storage cell according to current integration are combined. In the present invention, as a first differential residual capacity, a difference value is calculated between a first residual capacity indicating the residual capacity of a storage cell at a first time, calculated by a voltage estimation system from the voltage and current of the storage cell at the first time, and the residual capacity of the storage cell at a second time, calculated by a voltage estimation system from the voltage and current from the storage cell at the second time. A second differential residual capacity is then calculated indicating the difference value between the residual capacity of the storage cell at the first time and the residual capacity of the storage cell at the second time, by a current integration system, on the basis of the integrated amount of current in the period between the first time and the second time. A current increase/decrease range indicating the increase/decrease of the current from the current at the first time and the current at the second time is then calculated, the first differential residual capacity or the second differential residual capacity is switched as the differential residual capacity on the basis of the current increase/decrease range, and the sum of the first residual capacity and the switched differential residual capacity is outputted as the residual capacity of the storage cell at the second time.

公开(公告)号：US20160294194A1

公开(公告)日：2016-10-06

申请号：US15034452

申请日：2014-10-14

Applicant: NEC CORPORATION

Inventor： Junichi MIYAMOTO ,  Hiroshi KAJITANI ,  Muneo FUKAISHI

IPC: H02J4/00

CPC classification number: H02J4/00 ,  H02J7/0063 ,  H02J2007/0067

Abstract: A unit selector (120) selects a predetermined number of power storage units from a plurality of power storage units (110) and connects the selected power storage units to an input/output terminal (140). A control unit (130) controls the unit selector (120). Specifically, during continuous discharge from the input/output terminal (140), the control unit (130) switches the power storage units (110) selected by the unit selector (120), and repeatedly selects the same power storage units (110) at intervals of time.

Abstract translation: 单元选择器（120）从多个蓄电单元（110）中选择预定数量的蓄电单元，并将所选择的蓄电单元连接到输入/输出端子（140）。 控制单元（130）控制单元选择器（120）。 具体而言，在从输入输出端子（140）的连续放电期间，控制单元（130）切换由单元选择器（120）选择的蓄电单元（110），并且重复地选择相同的蓄电单元（110） 时间间隔

公开(公告)号：US20210090376A1

公开(公告)日：2021-03-25

申请号：US16634662

申请日：2017-08-02

Applicant: NEC Corporation

Inventor： Yuko OHTA ,  Shingo TAKAHASHI ,  Eisuke SANEYOSHI ,  Junichi MIYAMOTO ,  Shigeru KOUMOTO

IPC: G07F9/02 ,  G07F13/00 ,  G06Q10/00

Abstract: A maintenance monitoring apparatus includes: a maintenance management part that manages, based on a monitoring result of a current or power of a vending machine that provides a beverage by extracting the beverage from a raw material, whether an operation performed on the vending machine is a predetermined maintenance operation and whether the maintenance has been executed at an appropriate time interval and as many times as necessary; and a notification part that notifies that a maintenance has been executed or not.

公开(公告)号：US20160211677A1

公开(公告)日：2016-07-21

申请号：US14915119

申请日：2014-06-26

Applicant: NEC CORPORATION

Inventor： Kenji KOBAYASHI ,  Yuan LUO ,  Junichi MIYAMOTO ,  Shingo TAKAHASHI ,  Nobuhide YOSHIDA

IPC: H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0021 ,  H02J7/0026

Abstract: A power storage system (10) comprises the following: a battery unit (11) in which a plurality of battery cells are connected; an acquisition unit (12) for continuously acquiring, while the battery unit (11) is discharging, (V) which represents the extent of the discharge from the battery unit (11) and the temperature (T) of the battery unit (11) when the degree of discharge is (V); a balancing unit (13) for executing cell balancing by which the difference in the amount of charging between battery cells is reduced; and a balancing control unit (14) for controlling the balancing unit (13) so that when a reference state is detected on the basis of (V) and (T), cell balancing is not executed, in accordance with the results of the detection.

Abstract translation: 蓄电系统（10）包括：电池单元（11），其中连接有多个电池单元; 用于在电池单元（11）正在放电的同时，持续地获取表示从电池单元（11）排出的程度和电池单元（11）的温度（T）的（V）的获取单元（12） 当放电程度为（V）时; 用于执行电池平衡的平衡单元（13），通过该平衡单元减少电池单元之间的充电量的差异; 以及用于控制平衡单元（13）的平衡控制单元（14），使得当基于（V）和（T）检测到基准状态时，根据检测结果不执行单元平衡 。

公开(公告)号：US20160043578A1

公开(公告)日：2016-02-11

申请号：US14780930

申请日：2014-03-27

Applicant: NEC CORPORATION

Inventor： Junichi MIYAMOTO ,  Shingo TAKAHASHI ,  Yuan LUO ,  Nobuhide NOSHIDA

IPC: H02J7/00 ,  H01M10/48 ,  H01M10/44

CPC classification number: H02J7/0016 ,  H01M10/441 ,  H01M10/482 ,  H01M2010/4271 ,  H02J7/0014 ,  H02J7/0019 ,  H02J7/0021 ,  H02J7/345 ,  Y02T10/7055

Abstract: A charge and discharge device (10) includes: a battery unit (110) in which m (m is an integer of 3 or more) battery cells (112) that are connected in series are grouped into plural groups (114) including n (n is an integer equal to or larger than 2 and smaller than m) battery cells (112) that are continuously arranged and a part of the battery cells (112) that belong to a certain group is shared by a different group; a cell balance unit (120) that is provided for each group (114) and uniformizes voltages of the battery cells (112) that belong to the group (114); and a control unit (130) that stops the operation of the cell balance unit (120), when a voltage difference of the battery cells (112) that belong to an arbitrary one of the groups (114) is within a predetermined value, and when a total average voltage in all the battery cells (112) and a partial average voltage which is an average voltage of the battery cells (112) that belong to the arbitrary group (114) satisfy a specific condition, the cell balance unit (120) corresponding to the arbitrary group (114).

Abstract translation: 充放电装置（10）包括：将串联连接的m（m为3以上的整数）电池单元（112）的电池单元（110）分组为包括n（ n是等于或大于2且小于m的整数）连续布置的电池单元（112），属于某个组的电池单元（112）的一部分由不同组共享; 为每个组（114）提供并使属于组（114）的电池单元（112）的电压均匀化的单元平衡单元（120）; 以及当属于任意一个组（114）的电池单元（112）的电压差在预定值内时，停止电池平衡单元（120）的操作的控制单元（130），以及 当所有电池单元（112）中的总平均电压和属于任意组（114）的电池单元（112）的平均电压的部分平均电压满足特定条件时，单元平衡单元（120 ）对应于任意组​​（114）。