According to the latest European Patent Office documents show that Nokia has won a "folding Battery" patent. The patent was first submitted in 2012, and received the audit in 2013, the name called "BATTERY PACK".
In the patent map, we can see that the battery is divided into many small sections, and for coupling in the form of a watch-like strap, a plurality of collapsible small battery may be formed by laminating a manner standard size batteries. This design can take advantage of the limited space to the development of portable electronic device, this device may be similar to the appearance of the watch.
According to the description of the patent literature, on the part of the prototype device provided by Nokia, have begun to use such "folding battery."
Jenny