KranKing Ultracapacitors

IC Engine Cranking Very high initial peak power required to drive the flywheel Batteries have high specific energy capacity but low specific power capacity (<1kW/kg) Hence batteries of higher capacity are needed in order to provide the initial peak power required Improper cranking reduces the starter and alternator life as well as incurs higher maintenance costs www.cartoonstock.com

Battery issues Battery Maintenance Charging Short Life Requires regular maint. of electrolyte level, clean terminals, etc. Maintenance free batteries are usually heavy duty versions and hence costlier Requires proper charging: overcharging or charging at over voltage may reduce performance and life Maintenance Charging Short Life Repeated Cranking Battery Battery life is generally only 18 to 20 months or 1000 charge - discharge cycles Performance affected by SOC, SOH and temperature If cranking fails, repeated cranking not possible due to non availability of alternator supply and high charging time of battery

Ultracapacitor – the technology An ultra capacitor is an electrochemical device consisting of two porous electrodes immersed in an electrolyte solution that stores charge electro statically. It stores electrical charge in an electric double layer at the interface between a high-surface-area carbon electrode and a liquid electrolyte

Ultracapacitors contd… advanced material science and nanotech allow high surface-area electrodes for large electric-double-layer capacitance, low ESR these have capacitance values of several hundred Farads, enabling adequate energy storage for several short-duration, high-power applications depending on their design and construction, the specific power capacity (w/kg) of Ultracapacitors can be 10 to 100 times higher than that of most batteries

Ultracapacitors contd… Ultracapacitors have very high specific power capacity while low specific energy capacity. Hence they bridge the gap between conventional electrolytic capacitors and batteries

Engine cranking with Ultracapacitor

Ultracapacitors Technology and Performance Features:- Electrochemical Double Layer Capacitor (EDLC) Construction Bipolar Symmetric Carbon/Carbon Electrodes Aqueous (KOH) Electrolyte Internal Cell Balancing Circuits

range of Ultracapacitors 2 wheelers & low capacity cars 500W to 8000W 12V (nom.) - 5F / 0.5kJ to 50F / 8kJ Combustion engine (on board) 100hp to 600hp 12 V (nom.) - 55F / 4kJ to 695F / 50kJ 24 V (nom.) - 52F / 15kJ to 174F / 50kJ Potable Engine Starting system 1300W to 2200W 12 V (nom.) - 63F / 4kJ to 1400F / 100kJ 24 V (nom.) - 210F / 60kJ to 350F / 100kJ High capacity engine starting 96 V (nom.) - 17.8F / 81kJ 64 V (nom.) - 64F / 131 kJ Mobile Cranking Carts for fleet applications 12 V (nom.) - 879F / 50kJ 24 V (nom.) - 264F / 50kJ

for IC engine Cranking Proven Technology - More than 15 years of Rich Experience High Specific Cranking Power – up to 17kW/kg Deep Charge - Discharge Handling Capacity Power Cycling Capacity > 300,000 Cycles Wide Operating Temperature (-45 Deg C to +55 Deg C) Lowest Internal ESR in its Class ( only few mOhms) Fast Transient Response (~ 20 micro-seconds) Easy Installation and Interface, Flexible Mounting Quick Recharge (< 10 s) Low Maintenance & Long Service Life Safe - Can Handle Short Circuit / Reverse Polarity Rugged - No Fire and Explosion Hazard

Commercial heavy vehicles Off shore Marine application Defence vehicles Commercial heavy vehicles D G sets Railway Locomotive Fleet Application Off shore Marine application

benefits reliable engine starts from -45 degc to 55 degc life in excess of 300,000 cycles very low recharging time significant increase in life of battery, starter and alternator can handle short circuit and reverse polarity can be charged even from depleted batteries and gives successful cranking with lower rating batteries environmental friendly, no shipping restrictions maintenance free

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