Supercapacitors are seen as an enabling technology for resolving critical vehicle power requirements.
Engine cranking and acceleration require significant bursts of power, whilst deceleration and braking can generate very high charging currents, which can be recaptured and reused. Batteries are too large, too heavy, too slow to charge, too limited in power delivery, and too sensitive to deep discharge, voltage cycling, and low temperatures to support many of these emerging applications in modern vehicles. Supercapacitors are smaller and lighter, quicker to charge and discharge, unconcerned by voltage cycling, much more efficient at low temperatures, and capable of delivering far more power than any commercially available battery, making them the ideal choice for a battery complement - or replacement - in automotive applications..
Recently, CAP-XX has developed a range of larger prismatic supercapacitors and multi-cell modules suitable for use in automotive Stop-Start, Kinetic Energy Recovery Systems (KERS) and Micro-Hybrid vehicles. These modules are smaller and lighter than competitive systems based on cylindrical supercapacitors, and offer much improved battery performance and operational life at low cost.
The standard CAP-XX automotive module contains 6 supercapacitor cells, each rated at 1400F and 0.2 mOhm. This translates to 230F and <3 mOhm for a 16V module, which weighs in at less than 2kg and delivers a class-leading energy density of >4 Wh/kg.
CAP-XX is currently working with automotive OEMs and Tier 1 components suppliers on licensing agreements to bring these modules to market. Evaluation units are available from CAP-XX now.
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Distributed Power & Accessory Power Solutions
The current range of small cell supercapacitors from CAP-XX can be used in distributed power and accessory power applications for cars, trucks and buses. Placing a supercapacitor close to a pulsed load can allow for a significant reduction in the weight and cost of the electrical cabling it requires, whilst their use in high feature set remote controls, location tracking, driver information and navigation systems, and emergency call services can enable support for high peak loads from low/limited power sources, and secure backup power in the event of a loss or fluctuation in vehicle power.
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