Battery with a precisely positioned construction

Abstract

A battery comprises at least one layer with anode material. For each layer with anode material, the battery comprises at least one layer with cathode material. Between each layer with anode material and each layer with cathode material there lies at least one separator as a separating layer. The battery also comprises a housing with an interior space. The housing is arranged such that it surrounds the layers, in each case such that each layer with anode material and each layer with cathode material is completely accommodated in it. The housing is substantially of a material that has no, or negligible, electrical conductivity. The housing is preferably of a nonconductor, with preference of plastic. The invention also relates to a method for producing the battery according to the invention, and to a use of the same.

1 .- 16 . (canceled) 
     
     
         17 . A battery, in particular a battery of a stacked construction, comprising
 a) at least one layer with anode material;   b) for each at least one layer with anode material, at least one layer with cathode material, and   c) between each at least one layer with anode material and at least one layer with cathode material, at least one separator as a separating layer,   d) a housing with an interior space, the housing surrounding the layers;   
       and whereby
 the housing consists substantially of a material that has no, or negligible, electrical conductivity. 
 
     
     
         18 . The battery according to  claim 17 , whereby the housing consists of a nonconductor. 
     
     
         19 . The battery according to  claim 17 , whereby the housing consists of plastic. 
     
     
         20 . The battery according to  claim 17 , whereby the battery is of a stacked construction. 
     
     
         21 . The battery according to  claim 17 , the separator protruding in surface area beyond the at least one layer with cathode material, so that the separator forms at least one overhang beyond at least one edge of the at least one layer with cathode material and the overhang of the separator is connected to a further overhang of the separator, or an overhang of a further separator, by way of a plurality of integral connecting locations. 
     
     
         22 . The battery according to  claim 17 , comprising at least two layers with at least one separator as a separating layer between the two layers, the at least two layers and the at least one separator as a separating layer being positively engaging and designed such that no shearing movement is possible between the layers and/or between the separator and the layers. 
     
     
         23 . The battery according to  claim 17 , comprising a first safety distance (S) between at least one wall of the housing and the at least one layer with anode material. 
     
     
         24 . The battery according to  claim 17 , comprising a first safety distance (S) between at least one wall of the housing and the at least one layer with anode material of less than 0.5 mm. 
     
     
         25 . The battery according to  claim 17 , comprising a first safety distance (S) between at least one wall of the housing and the at least one layer with anode material of less than 0.2 mm. 
     
     
         26 . The battery according to  claim 23 , the at least one layer with anode material being designed as positively engaging with at least one wall of the housing. 
     
     
         27 . The battery according to  claim 17 , comprising a second safety distance (T) between an outer edge of an at least one layer with anode material and an outer edge of an at least one layer with cathode material, said second safety distance (T) being less than 0.5 mm. 
     
     
         28 . The battery according to  claim 17 , comprising a second safety distance (T) between an outer edge of an at least one layer with anode material and an outer edge of an at least one layer with cathode material, said second safety distance (T) being less than 0.3 mm. 
     
     
         29 . The battery according to  claim 17 , comprising a second safety distance (T) between an outer edge of an at least one layer with anode material and an outer edge of an at least one layer with cathode material, said second safety distance (T) being approximately 0.2 mm. 
     
     
         30 . The battery according to  claim 27 , the separator having in the region of the second safety distance (T) a plurality of welding points, which fix the at least one layer with cathode material in place. 
     
     
         31 . The battery according to  claim 17 , the housing being of mechanically stable material. 
     
     
         32 . The battery according to  claim 17 , the housing being of nonconducting, mechanically stable plastic. 
     
     
         33 . The battery according to  claim 17 , the at least one layer with anode material being arranged with its narrow outer edges positively engaging in the housing, apart from a discharge region; in particular, the at least one separating layer of the separator being of the same size as the at least one layer with anode material. 
     
     
         34 . The battery according to  claim 21 , the at least one separator as a separating layer forming a discharge region at a defined region of the at least one layer with cathode material and this discharge region having a defined overhang, which protrudes in surface area beyond the remaining overhang of the separator. 
     
     
         35 . The battery according to  claim 17 , the at least one layer with anode material comprising an anode coated on a first metallic carrier band, and the at least one layer with cathode material comprising a cathode coated on a second metallic carrier band and the battery further comprising at least one anode discharge tab and at least one cathode discharge tab, which are of the same material as the first metallic carrier band and/or the second metallic carrier band. 
     
     
         36 . The battery according to  claim 17 , the housing being designed such that it closes off the interior space from the environment in a substantially gastight and watertight manner, in particular also prevents the escape of electrolyte vapors. 
     
     
         37 . The battery according to  claim 17 , the housing being designed such that it makes the at least one layer with the anode material substantially positively engage with the housing walls in its area extent, apart from a region with an anode discharge tab. 
     
     
         38 . The battery according to  claim 17 , the battery being a lithium-ion battery. 
     
     
         39 . The use of the battery according to  claim 17  as a battery for medical apparatuses, in particular as a battery for hearing aids, medical pumps or retinal implants. 
     
     
         40 . The method for producing a battery, in particular a battery according to  claim 17 , comprising the following steps:
 a) providing a housing with an interior space, the housing being substantially of a material that has no, or negligible, electrical conductivity, preferably of a nonconductor, preferably of plastic;   b) fitting at least one layer with anode material into the housing, this layer preferably being fitted in exactly;   c) providing a first separator as a separating layer;   d) placing onto the first separator a layer with cathode material, which is smaller in surface area than the first separator, and   e) placing on a second separator and subsequently integrally connecting, preferably welding, the further separator to the first separator;   f) fitting the layer with cathode material into the housing.