Power Storage Devices｜TAIYO YUDEN CO., LTD.

Positioning of Power Storage Devices

The following figure shows the positioning of various Power Storage Devices based on the two indices of "power density" and "energy density."

ADVANTAGE

Advantages of Power Storage Devices

TAIYO YUDEN's Power Storage Devices possess power density, safety, and durability features that secondary batteries lack. The various advantages of "Electric Double-Layer Capacitors" and "Lithium Ion Capacitors" are introduced below.

Broad operating temperature range

High temperature lifetime
Low temperature operation

Superior charging and discharging characteristics

Maintenance-free

No rupturing or combustion due to an internal short

High level of safety

CASE STUDY

Here are various cases where the advantages and features of TAIYO YUDEN's "Power Storage Devices" can be utilized as well as actual case studies.

Backup

Capacitors immediately supply power when the power is shut off from the main power source.

Low resistance
Long lifetime

Peak assist

Capacitors supply power when the power exceeds the capacity of the main power source.

Low resistance

Battery replacement

Repeated charging and discharging enables the storage of even unstable power.

Long lifetime

TECHNICAL INFORMATION

The following explains the characteristics of the Power Storage Devices while comparing them to other devices.

	TAIYO YUDEN Electric Double-Layer Capacitors EDLC Storage method	TAIYO YUDEN Lithium Ion Capacitors LITHOSION™ Storage method	Lithium Ion Batteries LIB Storage method
Internal resistance	Excellent Low	Good Medium	Average High
Voltage Temperature range	2.7 to 0V -40 to 70℃2.3 to 0V -40 to 85℃	3.5 to 2.5V -30 to 85℃3.8 to 2.2V -30 to 70℃	to 4.3V -20 to 60℃
Voltage / Volume	Average 1	Good 2 to 3	Excellent 100
Charging/discharging cycles	Excellent 100K+ Cycles	Good 10K+ Cycles	Average 500–1K Cycles
Self‐discharge	Average	Excellent	Excellent
Safety	Excellent	Excellent	Average
Necessity of voltage monitoring	None	Required	Required