| 词条 | Self-discharge | ||||||||||||||||||||||||||||||
| 释义 |
Self-discharge is a phenomenon in batteries in which internal chemical reactions reduce the stored charge of the battery without any connection between the electrodes. Self-discharge decreases the shelf life of batteries and causes them to initially have less than a full charge when actually put to use. How fast self-discharge in a battery occurs is dependent on the type of battery, state of charge, charging current, ambient temperature and other factors. Primary batteries aren't designed for recharging between manufacturing and use, thus have battery chemistry that has to have a much lower self-discharge rate than older types of Secondary cells, but they have lost that advantage with the development of rechargeable Secondary Cells with very low self discharge rates like Low Self Discharge NiMH cells. Self-discharge is a chemical reaction, just as closed-circuit discharge is, and tends to occur more quickly at higher temperatures. Storing batteries at lower temperatures thus reduces the rate of self-discharge and preserves the initial energy stored in the battery. Self-discharge is also thought to be reduced as a passivation layer develops on the electrodes over time. Typical self-discharge by battery type
References1. ^Umweltbundesamt: [https://www.umweltbundesamt.de/sites/default/files/medien/publikation/long/4414.pdf "BATTERIEN UND AKKUS"] (3,65 MB PDF), October 2012; visited 2018-02-14 2. ^Wikipedia: Lithium polymer battery; visted 2019-02-10 3. ^Panasonic: Further reading
External links
3 : Battery (electricity)|Battery charging|Rechargeable batteries |
||||||||||||||||||||||||||||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。