公开(公告)号：US06524737B1

公开(公告)日：2003-02-25

申请号：US09555264

申请日：2000-07-25

申请人： Tadaaki Tanii ,  Satoshi Tsuzuki ,  Shiro Honmura ,  Takeo Kamimura ,  Kenji Sasaki ,  Masakazu Yabuki ,  Kiyonori Nishida

发明人： Tadaaki Tanii ,  Satoshi Tsuzuki ,  Shiro Honmura ,  Takeo Kamimura ,  Kenji Sasaki ,  Masakazu Yabuki ,  Kiyonori Nishida

IPC分类号： H01M1054

CPC分类号： C22B7/005 ,  C22B26/12 ,  H01M10/05 ,  H01M10/54 ,  Y02P10/212 ,  Y02W30/84

摘要： This invention provides a safe and efficient method of dismantling used lithium ion batteries. More specifically, the plastic cases which protect sealed battery cells are removed from the system in a stable and reliable fashion. Valuable materials such as lithium cobalt oxide, an oxide of a lithium-transition metal compound, aluminum and copper must be separated and recovered. The invention is distinguished by the fact that it entails the following processes. In the crushing process, the batteries are chilled to a temperature of −50° C. or lower. In this state they are repeatedly subjected to vibration and pressure by a number of objects whose rigidity and specific gravity are greater than those of the plastic. In this way the batteries are separated into sealed battery cells and plastic cases. In the heating process, the sealed battery cells separated in the process are heated to a temperature of at least 200° C. in a non-oxidizing atmosphere to separate mainly the organic materials. Finally, in one or more separation processes, the useless materials are removed and the targeted valuable materials are separated in a sequential fashion from the crushed fragments produced in the crushing process.

摘要翻译： 本发明提供一种安全有效的拆卸二次锂离子电池的方法。 更具体地说，保护密封的电池单元的塑料壳体以稳定和可靠的方式从系统中去除。 贵重物质如钴酸锂，锂 - 过渡金属化合物的氧化物，铝和铜必须分离和回收。 本发明的区别在于它需要以下过程。 在破碎过程中，将电池冷却至-50℃或更低的温度。 在这种状态下，它们被刚性和比重大于塑料的许多物体重复地受到振动和压力的影响。 以这种方式，电池被分成密封的电池单元和塑料盒。 在加热过程中，在非氧化气氛中将在该过程中分离的密封电池单元加热至至少200℃的温度，主要分离有机材料。 最后，在一个或多个分离过程中，去除无用的材料，并且以有序的方式将目标有价值的材料与在破碎过程中产生的破碎碎片分开。