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  • Whenever my phone dies, I like to be tactful; I prefer to say that itpassed away.”

    每當我手機沒電的時候,我喜歡用圓滑一點的方法來表達;我喜歡說它「過世了」。

  • Hey there, power hungry people, I’m Jules, here for DNews.

    嗨,各位求電若渴的朋友們大家好,我是 DNews 的朱爾斯。

  • Smartphone batteries suck.

    智慧型手機電池爛透了

  • Actually, all commercial batteries suck, and that’s kind of a big problem.

    事實上,所有商用型的電池都很爛,而且這是一個滿大的問題

  • Every new smartphone iteration seems to have twice the megapixels, three times the storage space,

    每一支新推出的手機似乎都會有兩倍高的畫素、三倍大的儲存容量、

  • no headphone jack, andbarely better battery life.

    沒有耳機插孔,然後......只有好一點點的電池續航力

  • And that battery life isn’t even guaranteed.

    而且那還不是保證一定會有的續航力

  • On an average smartphone, the lithium-ion battery is generally expected to last between 300 and 500 charge cycles,

    以一支普通的智慧型手機來說,它的鋰電池至少要能夠充放電三百至五百次循環,

  • and many of us do go through an entire charge cycle every single day.

    而對大部分的我們來說,我們幾乎每天都會充放電一個循環

  • So the fact is, smartphone batteries aren’t really meant to stay fully functional for more than a year.

    所以實際上,手機電池的設計並不能維持其功能良好,超過一年的時間

  • The problem comes from the fact that since the late 1970s,

    問題的根源在於,自從 1970 年代末期以來,

  • there hasn’t really been a revolutionary commercial breakthrough in battery technology.

    電池技術在商用領域裡就一直沒有革命性的突破了

  • Nearly all rechargeable modern batteries work by creating electrical current from the movement of lithium ions between electrodes,

    幾乎所有充電式的現代電池,都是透過鋰離子在正負極間移動來產生電流

  • and for this purpose, lithium is amazing.

    而就以這種目的來說,鋰是最驚人的材質

  • It’s the least dense metal and has the highest energy-to-weight ratio of comparable metals.

    鋰是密度最小的金屬,也是擁有最高能量重量比的金屬

  • So when we made the shift from chunks of lead floating in acid to slick smooth lithium as a source of storable energy,

    所以當我們把可儲存能量的來源,從泡在酸液中的大鉛塊,改成光滑平順的鋰金屬,

  • batteries became portable and lightweight.

    電池變得更好攜帶也更輕了

  • It was an amazing breakthrough and changed consumer electronics irrevocably

    這是一個驚人的突破,也就此改變了消費性電子產品...

  • but that was 30 years ago.

    但...那已經是三十年前的事了。

  • Today, we still use those same batteries.

    直到今天,我們仍然使用一樣的電池

  • But that’s not to say that battery life isn’t getting better, and sometimes in unexpected ways.

    不過也不能說電池續航力沒有在進步,只是有時會以意想不到的方式呈現

  • Just this year, the iPhone 7 Plus came out with about an hour more battery life than the iPhone 6S Plus.

    就在今年 (2016),蘋果的 iPhone 7 Plus 正式推出,電池續航力比 iPhone 6S Plus 多了近一個小時

  • But the battery capacity is only a tiny bit larger.

    不過電池容量只有多出那麼一點點

  • The trick is that what we callbattery lifeis actually capacity divided by consumption, and while capacity is stagnant, power consumption is not.

    關鍵就在於,我們所說的「電池續航力」是真實的電容量除以消耗量,容量是不變的,但能源消耗量則相反

  • The new iPhone processor chip uses only two-thirds as much power as the previous iteration,

    相較於上一個版本,新 iPhone 的處理器只需使用舊版本三分之二的電力

  • while reportedly increasing performance by 40%.

    但是根據報告指出,效能卻能提升百分之四十

  • Basically, the less power your phone uses, the better its battery life, without making any substantial changes to the battery itself.

    基本上來說,你的手機使用越少的能源,那你的電池續航力就越好,所以電池本身不需要有太大的改變。

  • Every year, computers and smartphones are able to do more with less.

    所以每一年,新的電腦和智慧型手機都能夠以小改進帶來大改變

  • But that doesn’t quite solve the bigger problem: batteries wear out and become useless pretty quickly.

    但是這並不完全解決那個最大的問題:電池壽命太短,而且很快就沒用了

  • According to Apple, on their Macbooks, after about 1000 cycles,

    根據蘋果提供的資料,Macbook 的電池在使用超過一千次循環後

  • youre left with only about 80% of the battery’s original capacity, maybe less, and it only gets worse from there.

    大概只會剩百分之八十左右的電池容量,甚至更少。而且狀況只會越來越糟

  • To solve this seemingly unavoidable issue, researchers from University of California,

    為了解決這個似乎無法避免的問題,加州大學爾灣分校的研究員

  • Irvine accidentally invented a battery that never dies.

    意外地發明一種永不衰退的電池

  • Well, seemingly never.

    至少看起來是永不衰退

  • Apparently, a doctoral candidate in their research lab was fooling around, and as we all do for fun, she coated a set of gold nanowires in manganese dioxide, and then sealed them in an electrolyte gel.

    很顯然地,一位博士生在研究室裡無所事事,就像我們喜歡找樂子一樣,她在一組黃金奈米線上塗上二氧化錳,然後把它封在電解質凝膠中

  • Hahaha, oh those scamps!

    哈哈哈,噢這些小淘氣!

  • Manganese!

    錳耶!

  • The trick is that nanowires conduct electricity very very well, and have a large surface area to store and transfer electrons.

    秘訣就在於,奈米線的導電效果非常好,而且有很大的表面積儲存與移動電子

  • But these wires are also SUPER fragile, and they tend to break down after use.

    但是這些線卻也「超級」脆弱,使用過後似乎都會斷掉

  • But coating the wires seems to have solved this major problem.

    不過,將奈米線塗上一層塗料,似乎解決了這個最大的問題

  • In the lab, this mini-battery went on to experience 200,000 charge cycles.

    在實驗室裡,這個迷你電池經歷過二十萬次的充放電循環

  • That's roughly 500 times more than the expected optimal lifecycle of a lithium-ion battery,

    而這樣的生命週期,大概是一顆理想狀態下的鋰電池,其最佳週期的五百倍,

  • while still operating between 94 and 96 percent efficiency.

    然而迷你電池仍保有百分之九十四至九十六的放電效率

  • Even after three months, the normally super-fragile wires were still fully functional.

    即便經過三個月的測試,這段應該是超級脆弱的線路,卻仍維持良好的運作

  • Although its in the early research stage, scientists think this battery could last up to 400 years.

    雖然這還在初期的實驗階段,但是研究者相信這顆電池能夠至少有近四百年的壽命

  • But your smartphone is still gonna die within a few years,

    不過你的智慧型手機依然會在幾年後掛掉

  • and that's because it's using technology from the 1970s.

    因為我們還在使用 1970 年代的電池科技

  • It's optimized, but obsolete.

    它是有進步,但是已經過時了

  • A number of tech groups have developed small scale solutions,

    許多技術團隊已經開發出小規模的解決方案,

  • a combination of which may prove to be the next big battery breakthrough, but as for now, most solutions are impractical

    這些組合都可能會是電池下一個重要的突破。但是直到現在,大部分的方案仍不實用

  • due to cost, longevity, and most importantly, safety.

    原因在於成本、壽命以及最重要的安全性

  • New batteries need to be tested for a long time before theyre introduced on the market.

    新型的電池在導入市場前,需要經過常時間的測試

  • Just look at the Note 7.

    看看三星 Note 7 的下場吧!

  • For now, it looks like battery life will continue to suck.

    以目前來說,電池續航力似乎還會繼續爛下去

  • If youre into finding out what makes things tick, like what’s in your electronics,

    如果你對了解事情背後的原理有興趣,像是你的電子產品,

  • youre probably like me and love the show How It’s Made.

    你或許會喜歡我和節目「製造的原理」。

  • Now you can watch this and other Science Channel shows on the Science Go App!

    現在你可以在 Science Go App 上收看這個節目以及其他科普頻道!

  • Check it out and download for free at your local App Store.

    快上你的 App Store 瞧瞧,現在免費下載

  • And if you want to know more how different types of batteries work in detail,

    然後,如果你還想知道更多不同型態電池的運作細節,

  • Trace has a video all about that here!

    這部的影片有完整的介紹!

  • Is battery life your biggest phone complaint?

    電池續航力是最困擾你的手機問題嗎?

  • What other phone improvements do you want to see?

    你還想看到手機在哪方面的進步呢?

  • Let us know down below in the comments and don't forget to like and subscribe for more

    在底下的留言告訴我們,也別忘了按讚及訂閱更多

  • videos everyday.

    每天的影片

Whenever my phone dies, I like to be tactful; I prefer to say that itpassed away.”

每當我手機沒電的時候,我喜歡用圓滑一點的方法來表達;我喜歡說它「過世了」。

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B1 中級 中文 美國腔 電池 續航力 手機 奈米線 容量 智慧型

為什麼你手機電池的續航力就是這麼糟?(Why Does Your Phone Battery Suck?)

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    韓澐   發佈於 2018 年 12 月 29 日
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