公开(公告)号：EP2269281A2

公开(公告)日：2011-01-05

申请号：EP09733946.9

申请日：2009-04-17

申请人： SK Energy Co., Ltd. ,  Korea Advanced Institute of Science and Technology

发明人： LEE, JoongHui ,  LIM, Jae Hwan ,  PARK, Sang Hyun ,  MOON, Gun-Woo ,  PARK, Hong-Sun ,  KIM, Chol-Ho

IPC分类号： H02J7/02

CPC分类号： H02J7/34 ,  H02J7/0014 ,  H02J7/0016 ,  H02J7/345

摘要： A two-stage charge equalization apparatus for a series-connected battery string according to the present invention comprises a two-stage DC-DC converter including a first DC-DC converter which is inputted with a total voltage of the battery string and outputs a voltage lower than the voltage inputted; and a second DC-DC converter which is inputted with an output of the first DC-DC converter and outputs a charge current for charging a particular battery cell, wherein the battery string is divided into one or more battery modules having a plurality of battery cells connected in series and the second DC-DC converter is provided for each battery module; a current conversion switch module which forms a path of the charge current between the battery module and the second DC-DC converter to allow the charge current to be applied to the particular battery cell composing the battery module and controls an application direction of the charge current; and a microprocessor which determines a battery cell to be charged of a low-charged battery cell and controls the current conversion switch module to allow the charge current to be applied to the battery cell to be charged.

公开(公告)号：EP2233938A2

公开(公告)日：2010-09-29

申请号：EP09700841.1

申请日：2009-01-12

申请人： SK Energy Co., Ltd.

发明人： JIN, Shanshan ,  LIM, Jae Hwan ,  OH, Jeonkeun ,  HAN, Chonghun ,  CHO, Sungwoo

IPC分类号： G01R31/36 ,  G01R19/00

CPC分类号： B60L11/1861 ,  B60L3/0046 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2260/44 ,  G01R31/3606 ,  G01R31/3651 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705

摘要： According to an embodiment of this invention, a method for measuring SOC (State Of Charge) of a battery comprises the steps of: obtaining current data, voltage data and temperature by measuring the current, the voltage and the temperature of a battery; calculating SOCi (State Of Charge based on current) by accumulating the current data; calculating open circuit voltage by using an equivalent circuit model which simply presents the current data, the voltage data and the battery through an electric circuit; calculating SOCv (State Of Charge based on voltage) by using the temperature data and the open circuit voltage; and choosing at least one of the SOCi and the SOCv as SOC of the battery by using the SOCi and the SOCv based on the judgment on the current state of the battery for a certain time interval.

摘要翻译： 在本发明的实施方式。据，用于测量电池的SOC（充电状态）的方法，包括以下步骤：通过测量电流，电压和电池的温度获得电流数据，电压数据和温度; 通过累加所述电流数据计算索契（基于电流的充电状态）; 通过使用在等效电路模型，该模型简单地呈现的当前数据，所述电压数据和电路上的电池通过计算开路电压; 通过使用温度数据和所述开路电压计算出的SOCv（基于电压的充电状态）; 并通过使用SOCI和基于所述电池的电流状态的判断在一定时间间隔内的SOCv选择SOCi中的至少一个和所述的SOCv作为电池的SOC。

公开(公告)号：EP2233939A2

公开(公告)日：2010-09-29

申请号：EP09701388.2

申请日：2009-01-12

申请人： SK Energy Co., Ltd.

发明人： LIM, Jae Hwan ,  JIN, Shanshan

IPC分类号： G01R31/36 ,  G01R19/00

CPC分类号： B60L11/1861 ,  B60L3/0046 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2260/44 ,  G01R31/3606 ,  G01R31/3651 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705

摘要： This invention is related to a method and an apparatus for choosing SOCi (State Of Charge based on current) or SOCv (State Of Charge based on voltage) as the SOC (State Of Charge) of a battery depending on a condition in a battery management system by using an equivalent circuit model. In this invention, a method for measuring SOC of a battery in a battery management system is characterized by comprising the steps of: obtaining voltage data and temperature by measuring the current, voltage and temperature of a battery; calculating SOCi by accumulating the current data; calculating open circuit voltage by using an equivalent circuit model which simply presents the current data, the voltage data and the battery through an electric circuit; calculating SOCv by using the temperature data and the open circuit voltage; and choosing at least one of the SOCi and the SOCv as SOC of the battery by using the SOCi and the SOCv based on the judgment on the current state of a vehicle for a certain time interval.

摘要翻译： 本发明涉及根据电池管理中的状况选择SOCi（基于电流的充电状态）或SOCv（基于电压的充电状态）作为电池的SOC（充电状态）的方法和装置） 系统通过使用等效电路模型。 在本发明中，一种用于测量电池管理系统中的电池的SOC的方法的特征在于包括以下步骤：通过测量电池的电流，电压和温度来获得电压数据和温度; 通过累积当前数据计算SOCi; 通过使用简单地通过电路呈现当前数据，电压数据和电池的等效电路模型来计算开路电压; 通过使用温度数据和开路电压来计算SOCv; 并且基于对车辆的当前状态的判定，使用SOCi和SOCv，选择SOCi和SOCv中的至少一个作为电池的SOC。

公开(公告)号：EP2227850A2

公开(公告)日：2010-09-15

申请号：EP08868255.4

申请日：2008-12-03

申请人： SK Energy Co., Ltd.

发明人： LIM, Jae Hwan ,  HAN, Se Kyung

IPC分类号： H02J7/02

CPC分类号： H02J7/0016 ,  H02J7/0014

摘要： The present invention relates to a cell balancing method for a high-voltage battery pack, and the method comprises steps of a) measuring an electromotive force of each cell composing the battery pack; b) selecting the cell to be balanced based on the electromotive force of the each cell; c) computing a total amount of charges used for balancing of the cell to be balanced; d) obtaining an accumulative amount of charges by accumulating an amount of current consumed for the balancing while performing the balancing of the cell to be balanced; and e) completing the balancing of the cell to be balanced when the accumulative amount of charges equals the total amount of charges.