Supercapacitor banks for energy storage

Author: EIS Release Date: Aug 24, 2023

Kyocera AVX has announced a range of high-capacity supercapcitor banks with low leakage.

 

Kyocera KAVX057 supercapacitor modules

“SCM Series supercapacitor modules are rated for operating temperatures from -40°C to +65°C and lifetimes that extend to millions of cycles,” according to the company. “They are also lead-free compatible, RoHS compliant, and compliant with the UL 810A standard for electrochemical capacitors.”

 

Initially there are five versions:

 

 

16V 58F SCMA63K586SPPB2 – 5mA max leakage, 15mΩ ESR, 226.2 x 48.6mm plastic case, terminal screws.

160V 5.8F SCMA63S586SPPB2 – 25mA max leakage, 150mΩ ESR, 364.5 x 234mm plastic case, terminal screws

16V 500F SCMZ1EK507STAB2 6mA max leakage, 2.5mΩ ESR, 418 x 68mm aluminium case, four-pin connector

48V 165F SCMZ1EP1F6STAB2, 6mA max leakage, 5.22mΩ ESR, 418 x 194mm aluminium case, four-pin connector

48V 83F SCMZ85P836STAB2, 3mA max leakage , 9mΩ ESR, 418 x 194mm aluminium case, four-pin connector

All capacitances are +30%, -10%.

 

 

Picking the 16V 58F SCMA63K586SPPB2 as an example, maximum operating current is 21.1A at 15°C, although peak up to 249A can be handled. Capacity is 2.07Wh and it weighs 680g.

 

Lifetime if cycled from rated voltage to half voltage and back is 500,000 cycles at +25°C – to a 30% or less capacitance loss.

 

IEC 60068-2-27, 29 / IEC 60068-2-6 vibration resistance is claimed to the same capacitance change.

 

Active cell balancing is supported, said the company.

 

Applications are foreseen with batteries or alone in uninterruptable power supplies, micro-grid storage, wind turbine pitch control, energy harvesting and regenerative energy capture.