Expansion Of Lithium Ion Pouch Cell Batteries

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Expansion of lithium ion pouch cell batteries.

In this paper the electrode expansion is quantified from in situ neutron images taken during cycling of pouch cells with lithium iron phosphate positive and graphite negative electrodes. When a safety problem occurs the pouch cell will generally be blown apart unlike the steel shell or the aluminum shell. Gorsich journal journal of the electrochemical society year. Observations from neutron imaging author j.

Stefanopoulou a patrick hagans b yi ding c and david gorsichc adepartment of mechanical engineering university of michigan ann arbor michigan 48109 usa bnavitas systems asg ann arbor michigan 48108 usa. Eliminating the metal enclosure reduces weight but the cell needs some alternative support in the battery compartment. Observations from neutron imaging article siegel2013expansionol title expansion of lithium ion pouch cell batteries. Expansion of lithium ion pouch cell batteries.

The pouch cell makes the most efficient use of space and achieves a 90 to 95 percent packaging efficiency the highest among battery packs. Pouch cell weight is 40 lighter than steel shell lithium battery of the same capacity 20 lighter than aluminum shell lithium battery. But how do they work. Types of battery cells the authour said this the 18650 has a higher energy density than a prismatic pouch li ion cell.

Observations from neutron imaging the expansion of battery material during lithium intercalation is a concern for the cycle life and. The expansion of battery material during lithium intercalation is a concern for the cycle life and performance of lithium ion batteries. Rather than using a metallic cylinder and glass to metal electrical feed through for insulation conductive foil tabs welded to the electrode and sealed to the pouch carry the positive and negative terminals to the outside. Request pdf expansion of lithium ion pouch cell batteries.

The pouch cell is packaged in aluminum plastic film. Pouch cell battery packs. Dahn is the principle battery. Ding and david j.

Siegel a z anna g. Without them today s mobile phones mp3 players notebooks and electric vehicles would be unthinkable. In 1995 the pouch cell surprised the battery world with a radical new design. Observations from neutron imaging jason b.