外文資料翻譯---鋰電池充電器的設(shè)計(存儲版)
【正文】 FLASH saving machine can get the new model very much However, this kind of method can shorten time that new product appear on market consumedly, and need a kind of hardware of stock design provide The in keeping with SLA, NiCd, NiMH of the integrity and the database function of the battery of Li Ion. 鋰 電池充電器的設(shè)計 介紹 根據(jù)其尺寸，重 量和能量儲存優(yōu)點，鋰 離子可再充電電池正在被用于許多的應(yīng)用領(lǐng)域。The design of the lithium battery charger Introduction LiIon rechargeable batteries are finding their way into many applications due to their size, weight and energy storage batteries are already considered the preferred battery in portable puter applications, displacing NiMH and NiCad batteries, and cellular phones are quickly being the second major marketplace for LiIon. The reason is clear. LiIon batteries offer many advantages to the end consumer. In portable puters, LiIon battery packs offer longer run times over NiCad and NiMH packs for the same form factor and size, while reducing weight. The same advantages are true for cellular phones. A phone can be made smaller and lighter using LiIon batteries without sacrificing run time. As LiIon battery costs e down, even more applications will switch to this lighter and smaller technology. Market trends show a continual growth in all rechargeable battery types as consumers continue to demand the convenience of portability. Market data for 1997 shows that approximately 200 million cells of LiIon will be shipped, pared to 600 million cells of NiMH. However, it is important to note that three cells of NiMH are equivalent to one LiIon cell when packaged into a battery pack. Thus, the actual volume is very close to the same for both. 1997 also marked the first year LiIon was the battery type used in the majority of portable puters, displacing NiMH for the top spot. Data for the cellular market showed a shift to LiIon in the majority of phones sold in 1997 in Europe and batteries are an exciting battery technology that must be watched. To make sense of these new batteries, this design guide explains the fundamentals, the charging requirements and the circuits to meet these requirements. Along with more and more the emergence of the handheld electric appliances, to the high performance, baby size, weight need of the light battery charger also more Come more battery is technical to progress to also request continuously to refresh the calculate way more plicatedly is fast with the realization, safety of need Want to carry on the more accurate supervision towards refreshing the process, to shorten to refresh time and attain the biggest battery capacity, and prevent176。這些電池已經(jīng)被考慮為優(yōu)先的電池于手提式計算機的應(yīng)用 ,移置 NiMH 和 NiCad 電池 ,而且行動電話正在飛快地成為鋰電池的第二個主要的市場。 根據(jù)以前市場的資料大約在 1997 年的時候表明大約二億個鋰 離子電芯將會被裝船運送 ,相比較于 600 百萬 個 NiMH的電芯 。電池技術(shù)的持續(xù)進步也要求更復(fù)雜的充電算法以實現(xiàn)快速、安全的充電。而其他方案為了達到此目的，可能需要外部的 ADC，不但占用PCB 空間，也提高了系統(tǒng)成本。只要電池單元電壓不超過生產(chǎn)商的規(guī)定 ( 典型值為)， SLA 電池可以無限制地充電。 NiCd 電池以恒定電流的方式進行充電。鋰電池以恒定電壓進行充電，同時要有電流限制以避免在充電過程的初期電池過熱。若涓流充電時電流為 C/40，則充電電流即為電池容量除以 40。 停止充電的判別方法 電池的不同應(yīng)用場合及工作環(huán)境限制了對判斷停止充電的方法的選擇。 V – 電壓 當(dāng)電壓超出上限時停止充電。對于某些類型的電池，當(dāng)電池充滿后繼續(xù)充電將導(dǎo)致電壓的下降。 dT/dt – 溫度上升速率 快速充電時溫度的變化率可以作為停止充電的依據(jù)。只需要將新的充電算法通過 ISP 下載到處理器的 FLASH 存儲器就可以得到新的型號。 適用于 NiCd電池和 NiMH 電池。 T – 溫度 絕對溫度可以作為 N
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