Cable type rechargeable battery

Abstract

The present invention relates to a cable type rechargeable battery, and more particularly the cable type rechargeable battery of the present invention comprises: inner electrodes comprising at least two cathodes disposed in parallel, each of which has a horizontal cross section of a predetermined shape, extends in the length direction and has an electrolyte layer constituting a pathway for ions formed on the outer surface; an outer electrode constituting an anode, which comprises an anode active material layer that envelops the inner electrode; and a protective covering which is disposed around the outer electrode. The cable type rechargeable battery can freely change shape in that it has a linear structure while at the same time being flexible. The battery rating is high because a plurality of inner electrodes are provided inside the outer electrode which is shaped as a pipe, and hence the contact surface area is increased. Also, it is easy to adjust the capacity balance between the inner electrodes and the outer electrode by adjusting the number of inner electrodes, and short circuiting (shorting) can be prevented since the electrolyte layers are formed on the inner electrodes.

Description

Technical field [0001] The present invention relates to a freely deformable cable-type secondary battery. Background technique [0002] This application claims priority from Korean Patent Application No. 10-2010-0009049 filed in Korea on February 1, 2010, the entire content of which is incorporated herein by reference. [0003] Secondary batteries are devices that can store energy in a chemical form and convert it into electrical energy when needed to generate electricity. The secondary battery is also called a rechargeable battery because it can be recharged repeatedly. Common secondary batteries include lead storage batteries, NiCd batteries, NiMH storage batteries, Li ion batteries, Li ion polymer batteries, and the like. When compared with disposable primary batteries, secondary batteries are not only more economical and effective, but also more environmentally friendly. [0004] At present, secondary batteries are used in applications that require low power, such as equipment...

AI Technical Summary

Problems solved by technology

Korean Patent Laid-Open 2005-0099903 discloses a filament-type flexible battery that contains inner electrodes, electrolytes and outer electrodes, but has a restrictive structure of one negative electrode and one positive electrode and thus has a low capacity balance

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