`
`Continuous contact between the edge
`of the current collectors and the cell
`terminals
`Lowers impedance, lowers thermal
`resistance, vastly improves thermal
`exchange
`
`Solid internal cell structure
`Better suited to handle shock and vibration
`
`Hard case construction
`Rugged and durable, does not require
`additional protective hardware
`
`Positive pan
`terminal
`
`Rolled-Ribbon®
`roll
`
`Negative pan
`terminal
`
`Cross-section
`
`Rolled-Ribbon® Stacked-Cell Battery Construction
`
`Column structure:
`Mechanically rugged battery pack
`
`Direct ohmic contact between
`compressed cell faces:
`No need for tabs or welding
`
`Configurable series and parallel (S, P)
`arrangement of cells:
`Tailored battery pack voltage and capacity
`
`Re- usable battery pack hardware:
`Simple cell removal and repurposing
`
`The NEW STANDARD for High-Power
`
`High-Capacity Li-ion Batteries
`
`The ROLLED-RIBBON® Cell Design
`
`+1 (512) 387-2553 | info@rolled-ribbon.com | 14141 W Highway 290, Bldg #400, Austin, TX 78737 USA
`
`www.rolled-ribbon.com
`
`The stackable cell design lends
`itself to scalable, compact
`battery pack designs.
`
`Large format cells maximize
`power and minimize both heat
`generation and thermal gradients.
`
`VARTA Ex. 2029 Page 1 of 2
`PEAG/Audio Partnership v. VARTA
`IPR2020-01212
`
`
`
`THE ROLLED- RIBBON® DESIGN ultimately leads
`to an overall increase in the cell’s in- cycle performance —
`its efficiency and enhanced rate — and its cycle life.
`
` Use more capacity
`
` Charge faster
`
` Deliver higher power
`
` Replace less frequently
`
`Rolled-Ribbon® Roll Construction
`
`Rolled-Ribbon® Cells have a “continuous tab” current collector contacting the cell terminal surface
`
`Z-folded
`Separator
`
`Anode
`
`Cathode
`
`Low impedance
`• Better power capability: fast- charging, high- power delivery
`• Less waste heat generation: lower thermal management
`challenges and accompanying energy needs
`• More efficient energy conversion: more capacity, energy, power
`
`Maximum Power Delivery
`• Charge at 2C (many times faster than other cells)
`• Deliver at 5C
`• Pulse (short-duration) up to 10C
`
`Unparalleled Thermal Properties
`• Low thermal resistance axially through the cell, extending
`through the battery cell stack
`• Large thermal exchange surfaces on terminals of the cell
`• Uniform heat distribution (no “hotspots”)
`
`Minimum Heat Generation
`• Extend cycle life by naturally keeping cell temperature low
`• Eliminate added thermal management systems and
`associated component and energy costs
`
`A Rolled-Ribbon roll consists of long, narrow
`cathode and anode strips – “ribbons” – that are
`tucked into separate folds of a long length of
`separator folded into a Z-shape and together
`spiral wound.
`
`The result is a roll having on each face a different
`electrode presenting its edge – a “continuous
`tab” – to make contact with the inside surface of
`the respective cell terminal.
`
`For Cell Construction, see the back page.
`
`Conventional Cells (cylindrical, pouch and prismatic, stacked or wound)
`use narrow tabs between the current collectors and the cell terminals
`
`VARTA Ex. 2029 Page 2 of 2
`
`
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