Secondary battery using system and material for negative electrode of secondary battery
    6.
    发明公开
    Secondary battery using system and material for negative electrode of secondary battery 失效
    二次电池使用系统和二次电池负极材料

    公开(公告)号:EP0729194A3

    公开(公告)日:1996-09-18

    申请号:EP96101409.9

    申请日:1996-02-01

    申请人: HITACHI, LTD.

    IPC分类号: H01M4/58

    摘要: A lithium secondary battery suitable for use as a power source for a secondary battery using system such as an electric automobile, motor bicycle or portable equipment includes a negative electrode (17) composed of a carbon material including carbon particles carrying fine particles of a metal which forms an alloy with lithium. The carbon particles have a face-to-face dimension which is 3.354 to 3.369 Å and a crystal grain size in a C-axis direction which is equal to or greater than 300 Å. The metal forming an alloy with lithium has a particle size which is equal to or smaller than 1000 Å. With the use of the charge/discharge capacity of an alloy of the metal and lithium, a value exceeding the theoretical capacity 372 mAh/g of graphite can be obtained. The lithium secondary battery is capable of discharge with an output energy density equal to or higher than 350 W/kg.

    摘要翻译: 一种适合用作使用诸如电动汽车,摩托车或便携式设备之类的二次电池系统的电源的锂二次电池包括由碳材料构成的负电极(17),所述碳材料包含承载金属细颗粒的碳颗粒 与锂形成合金。 碳颗粒具有3.354至3.369的面对面尺寸和在等于或大于300的C轴方向上的晶粒尺寸。 与锂形成合金的金属具有等于或小于1000的粒径。 通过使用金属与锂的合金的充放电容量,可以获得超过石墨的理论容量372mAh / g的值。 锂二次电池能够以等于或高于350W / kg的输出能量密度放电。

    Secondary battery power storage system
    9.
    发明公开
    Secondary battery power storage system 失效
    二次电池蓄电系统。

    公开(公告)号:EP0660489A2

    公开(公告)日:1995-06-28

    申请号:EP94120263.2

    申请日:1994-12-21

    申请人: HITACHI, LTD.

    IPC分类号: H02J7/34

    摘要: The present invention provides a distributed secondary battery type power storage system capable of maintaining the soundness of the secondary battery and of efficient electric power charging and discharging operations. The secondary battery power storage system comprises a secondary battery connected to a load, a charge/discharge unit connectable to a power system and connected to the secondary battery, and a plurality of loads connected to the charge/discharge unit. A power receiving object is selected and a capacity is determined on the basis of information about the operating condition of the plurality of loads, and the surplus electric power remaining in the secondary battery after feeding electric power from the secondary battery to the load is fed to the selected power receiving object through the charge/discharge unit. The secondary battery power storage system is capable of maintaining the soundness of the secondary battery and of efficient charging and discharging operation.