公开(公告)号：US5750288A

公开(公告)日：1998-05-12

申请号：US538252

申请日：1995-10-03

申请人： Like Xie ,  David T. Fouchard ,  Walter B. Ebner ,  El-Sayed Megahed

发明人： Like Xie ,  David T. Fouchard ,  Walter B. Ebner ,  El-Sayed Megahed

IPC分类号： C01G53/00 ,  H01M4/131 ,  H01M4/48 ,  H01M4/485 ,  H01M4/52 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/36 ,  H01M4/02

CPC分类号： H01M4/525 ,  C01G53/42 ,  C01P2002/20 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2006/40 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/131 ,  H01M4/485 ,  Y02P70/54

摘要： The present invention relates to electrochemical cells, and more particularly to secondary lithium intercalation cells. Nickel is employed as a component "M" in an active cathode material represented by the formula Li.sub.x M.sub.y O.sub.z, where "x" and "y" are generally about 1, and "z" is generally about 2. In the present invention "M.sub.y " is divided into two components, a first major component of nickel, corresponding to at least 70% of "M.sub.y," and a second minor component comprising at least one of a non-transition metal selected from the group consisting of aluminum, gallium, tin, and zinc, and in some embodiments at least one transition metal selected from the group consisting of scandium and the Period 5 metals having atomic numbers between 39 and 42. A two-stage reaction process for making the compounds of the active cathode materials of the present invention is described.

摘要翻译： 本发明涉及电化学电池，更具体地说涉及二次锂嵌入电池。 镍用作由式LixMyOz表示的活性阴极材料中的组分“M”，其中“x”和“y”通常为约1，“z”通常为约2.在本发明中，“My”为 分为两部分，镍的第一主要成分，相当于“My”的至少70％，第二次要成分包含选自铝，镓，锡， 和锌，并且在一些实施方案中为至少一种选自由钪和原子序数为39至42的周期5金属组成的组中的至少一种过渡金属。用于制备本发明的活性阴极材料的化合物的两阶段反应方法 描述本发明。

公开(公告)号：US5594320A

公开(公告)日：1997-01-14

申请号：US303703

申请日：1994-09-09

申请人： David R. Pacholok ,  David T. Fouchard ,  Walter B. Ebner

发明人： David R. Pacholok ,  David T. Fouchard ,  Walter B. Ebner

IPC分类号： H02J7/00

CPC分类号： H02J7/0018

摘要： An equalizer for equalizing the charge on several series-connected cells includes a transformer having plural windings on a core corresponding to the number of cells. The windings are tightly coupled to one another. A switching device such as a MOSFET is connected to each of the windings, and a winding and a switching device are connected across each of the cells. The switching devices are simultaneously switched at a relatively high frequency, e.g., 20 Hz, and the voltage across the highest charged cell appears across each of the windings when the switching devices are on. Current flows from the most highly charged cell to a cell or to cells of lower charge, with the charging current being proportional to the difference in voltage between the highest charged cell and each of the lesser charged cells. Equalization is carried out with very little power consumption by the equalizer, allowing charging to take place in a rapid manner.

摘要翻译： 用于均衡几个串联电池的电荷的均衡器包括在核心上具有与单元数相对应的多个绕组的变压器。 绕组彼此紧密耦合。 每个绕组连接诸如MOSFET的开关装置，并且绕组和开关装置连接在每个电池单元之间。 开关器件以相对较高的频率（例如20Hz）同时切换，并且当开关器件导通时，跨越最高充电单元的电压出现在每个绕组上。 电流从最高电荷的电池流向电池或较低电荷的电池，充电电流与最高充电电池和每个较小充电电池之间的电压差成比例。 通过均衡器进行均衡化，功率消耗非常小，允许充电以快速方式进行。