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）。

公开(公告)号：US20150318726A1

公开(公告)日：2015-11-05

申请号：US14440526

申请日：2013-11-01

Applicant: NEC Corporation

Inventor： Yuan LUO ,  Shinya OHHATA ,  Junji KOGURE ,  Nobuhide YOSHIDA ,  Shingo TAKAHASHI ,  Noriyuki ITABASHI

IPC: H02J7/00

CPC classification number: H02J7/0047 ,  H01M10/441 ,  H01M10/482 ,  H02J7/0021 ,  H02J7/0022 ,  H02J7/007 ,  H02J7/0078 ,  H02J7/0083 ,  H02J2007/0049 ,  H02J2007/005

Abstract: A battery control device (100) includes: a measurement unit (110) that individually measures an amount of discharging current of a discharging secondary battery among a plurality of secondary batteries which are independently charged and discharged; a time calculating unit (120) that calculates time required until the secondary battery has a constant battery capacity for each of the discharging secondary batteries on the basis of a discharging current rate for each of the secondary batteries which is calculated on the basis of the amount of discharging current, and an SOC of the secondary battery; a number calculating unit (130) that calculates an expected number of the secondary batteries, which become fully charged in the required time, on the basis of a charging current rate for each of the secondary batteries which is calculated on the basis of an amount of charging current of the charging secondary battery, an SOC of the secondary battery, and the required time, and calculates a total value of the expected number and the existing number of secondary batteries which are already fully charged; and a control unit (140) that determines whether or not to raise the charging current rate on the basis of the total value.

Abstract translation: 电池控制装置（100）包括：测量单元（110），其单独地测量在独立地充放电的多个二次电池中的放电二次电池的放电电流量; 时间计算单元，其计算基于每个二次电池的放电电流率，根据二次电池的数量计算出二次电池对于每个放电二次电池具有恒定的电池容量所需的时间 的放电电流和二次电池的SOC; 数字计算单元（130），其基于每个二次电池的充电电流速率来计算在所需时间内完全充电的二次电池的预期数量，所述充电电流率是基于根据 充电二次电池的充电电流，二次电池的SOC和所需时间，并计算已经充满电的二次电池的预期数量和现有数量的总值; 以及基于总值确定是否提高充电电流速率的控制单元（140）。