Datasheet

使用指南 Application Guidelines
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Index
極性 Polarity
EDLC的電極設計具有相對稱的特性，即兩極有相似的成分。在EDLC初次組裝時，任一電極都可定
為正極或負極。但EDLC在100%質量測試時第一次充電，其電極將會形成極性化。每一EDLC都有
負極框或符號來標識極性。盡管其可以降低到零電壓，其電極還是會保留非常少的電荷。雖然之前
充電的EDLC會放電至–2.5V且在容量或ESR方面至極低，但還是不應進行反極使用。
EDLC are designed with symmetrical electrodes, meaning they are similar in composition. When an EDLC is
first assembled, either electrode can be designated positive or negative. Once the EDLC is charged for the
first time during the 100% QA testing operation, the electrodes become polarized. Every EDLC has a negative
stripe or sign denoting polarity. Although they can be shorted to zero volts, the electrodes maintain a very small
amount of charge. Reversing polarity is not recommended, however previously charged EDLC have been
discharged to –2.5V with no measurable difference in capacitance or ESR.
注： 在一方向上保留的電荷越久，EDLC就變得越極性化。如果在一方向上長期充電后再進行反向
充電，EDLC的壽命將會大大地縮短。
Note: The longer they are held charged in one direction, the more polarized they become. If reversely
charged after prolonged charging in one direction, the life of the EDLC may be shortened.
環境溫度 Ambient Temperature
DRE系列電容的標准溫度范圍為–25˚C~+70˚C，DRL系列電容的標准溫度范圍為–40˚C~+60˚C。
溫度及電壓會對EDLC壽命有影響。一般來說，環境溫度每提升10˚C，EDLC壽命就會縮短一半。因
此，建議盡可能在最低溫度下使用EDLC以降低內部劣化與ESR升高。在低於正常室溫環境下，可
使用稍高於額定工作電壓而不造成內部劣化和壽命縮短。在低溫下提升使用電壓將可抵消ESR的
升高。高溫下ESR的升高會導致EDLC永久性劣化/電解液分解。在低溫下，因電解液粘性的提升及
離子的緩性移動緣故，ESR升高只是一種短暫現象。
The standard temperature range is –25˚C to +70˚C for DRE series or –40˚C to +60˚C for DRL series.
Temperature in combination with voltage can affect the life time of an EDLC. In general, raising the ambient
temperature by 10˚C will decrease the life time of an EDLC by a factor of two. As a result, it is recommended
to use the EDLC at the lowest temperature possible to decrease internal degradation and ESR increase.
At temperature lower than normal room temperature, it is possible to apply voltages slightly higher than
the recommended working voltage without significant increase in degradation and reduction in life time.
Raising the applied voltage at low temperatures can be useful to offset the increased ESR. Increased ESR at
higher temperatures will result in permanent degradation/electrolyte decomposition inside the EDLC. At low
temperatures, however, increased ESR is only a temporary phenomenon due to the increased viscosity of the
electrolyte and slower movement of the ions.