Power Storage Devices | TAIYO YUDEN CO., LTD.

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TAIYO YUDEN's "Power Storage Devices (Capacitors)" include "Electric Double-Layer Capacitors" and "Lithium Ion Capacitors". These state-of-the-art power storage devices have superior durability as it relates to repeated charging and discharging operations. Our products enable a long life and a broad operating temperature range. TAIYO YUDEN is fully committed to the development of these devices with a focus on automotive and industrial equipment applications using the slogan "high temperature reliability and high safety".

Introductory Video

An easy to understand explanation of TAIYO YUDEN's "Power Storage Devices."

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."

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.

Electric Double-Layer Capacitors
-40℃–70℃
Lithium Ion Capacitors
-35℃–85℃

Broad operating temperature range

High temperature lifetime
Low temperature operation

Superior charging and discharging characteristics

Maintenance-free

Nail penetration test:
Does not emit smoke or fire even when pierced with a nail.

No rupturing or combustion due to an internal short

High level of safety

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

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TAIYO YUDEN

Lithium Ion Capacitors

LITHOSION™

Storage method

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Lithium Ion Batteries

LIB

Storage method

Internal resistance
- Low
- Medium
- High

Voltage

Temperature range
- 2.7–0V
  
  -40–70℃
  
  2.3–0V
  
  -40–85℃
- 3.5–2.5V
  
  -30–85℃
  
  3.8–2.2V
  
  -30–70℃
- to 4.3V
  
  -20–60℃

Voltage / Volume
- 1
- 2 to 3
- 100

Charging/discharging

cycles
- 100K+ Cycles
- 10K+ Cycles
- 500–1K Cycles

Self‐discharge

Safety

Necessity of voltage monitoring
- None
- Required
- Required

Advantages of Power Storage Devices

Learn more about the internal resistance, charging and discharging cycles, and safety.

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Power Storage Devices technical information

Learn more about the principles behind capacitors and the self‐discharge characteristics.

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Case Studies

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