Circuit and method for monitoring the operational reliability of rechargeable lithium cells

    公开(公告)号:US06570364B2

    公开(公告)日:2003-05-27

    申请号:US10056854

    申请日:2002-01-25

    IPC分类号: H02J700

    摘要: A method for monitoring the operational reliability of rechargeable lithium cells including measuring the cell voltage and cell temperature, the cell is discharged if a predetermined cell limit voltage (UG) and a predetermined ambient limit temperature TG are exceeded at the same time, until a predetermined lower voltage level or a predetermined lower ambient temperature is reached. A circuit for carrying out the method has a first threshold value switch which responds when a predetermined upper limit voltage (UG) is exceeded in the cell, and a second threshold value switch (C) which responds when a predetermined ambient temperature limit (TG) is exceeded, and has a logic circuit (E) which connects (G) the cell to a load when the first and second threshold value switches respond at the same time, wherein both threshold value switches (C, D) are configured such that they trip when a lower cell voltage or a lower ambient temperature is reached.

    Process for the production of a positive electrode in ribbon form for
primary and secondary cells
    10.
    发明授权
    Process for the production of a positive electrode in ribbon form for primary and secondary cells 失效
    用于生产初级和次级细胞的RIBBON型阳极电极的方法

    公开(公告)号:US5158722A

    公开(公告)日:1992-10-27

    申请号:US696368

    申请日:1991-05-06

    摘要: Positive ribbon electrodes for primary and secondary cells are produced in a dry process wherein two strips of active material in powder form, preferably comprised of MnO.sub.2, FeS.sub.2, CuO, .alpha.-Cu.sub.2 V.sub.2 O.sub.7, and Li.sub.x MnO.sub.y, are simultaneously rolled and then fed into the gap of a roller mechanism, on opposite sides of an interposed metal net or mesh, to roll coat both sides of the lattice-like carrier strip. After excess mass is stripped off, the finished electrode ribbon has a thickness of less than 0.45 mm and a porosity of more than 24% which, because of its large active surface, is advantageously used in wound batteries incorporating Li or H.sub.2 electrodes.

    摘要翻译: 用于初级和次级电池的正带状电极是以干法生产的,其中粉末形式的两条活性材料,优选由MnO 2,FeS 2,CuO,α-Cu 2 V 2 O 7和LixMnO y组成,同时被轧制,然后进料到 在插入的金属网或网的相对侧上的滚子机构,以滚动涂覆格子状载体条的两侧。 在剥离多余质量之后,成品电极带的厚度小于0.45mm,孔隙率大于24%,由于其大的活性表面,有利地用于包含Li或H2电极的缠绕电池中。