Page 99 - Lindens Handbook of Batteries
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3.18 PRINCIPLES OF OPERATION
FIGURE 3.21 Cell design; typical internal configurations. (a) Bobbin construction. (b) Spiral wound construction. (c) Flat-
plate construction. (d) Bipolar-plate construction.
The second design is the “spiral wound” electrode construction, typically used in sealed portable
rechargeable batteries and high-rate primary and rechargeable lithium batteries (Fig. 3.21b). In this
design, the electrodes are prepared as thin strips and then rolled, with a separator in between, into
a “jelly roll” and placed into the cylindrical can. This design emphasizes surface area to enhance
high-rate performance, but at the expense of active material and capacity. Lithium/sulfur dioxide
primary cells employ this design.
