單車環島 筆電上網 全靠太陽能 自行車達人Billy Wang 13天實驗旅行

原文連結
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具22年單車旅行經驗的Billy，在5/23展開一段摺疊單車環島旅行，除騎單車上路之外，這趟旅行與之前最不同之處，就是Billy還帶著一個太陽能發電箱，實驗太陽能在旅行中，對途中的用電可以給予多大的幫助，但在旅途中即使有了發電箱，還是要靠天吃飯，碰到下雨無法充電還是沒輒，無法全程使用太陽能板達到電力自給自足。
旅行中提供太陽能發電箱的蓄源科技業者，和Billy正好認識，當Billy看到這個發電箱時，帶著太陽能板旅行的想法冒然而生，加上最近的單車熱潮，讓他決定開始這趟名為撞日向前行的實驗旅行。
靠太陽能難供全程用電
13天的行程中，天氣時陰時晴，有一半的天數把太陽能板拿出來曬過，但曬足8~10小時的只有幾天，大部分是下午才拿出來曬3至5個小時，而且到了傍晚的日照，發電功率已經很小了，所以很難以太陽能板支援全程用電，曬半天的發電箱，約可供筆電用2小時(包含使用3.5G上網、修圖、寫網誌)，以及4顆3號電池充半飽，Billy覺得可能在新疆那種日照強，沿途又很難找電的地方，太陽能發電工具會顯得比較實用；而且4.2公斤重的箱子對單車旅行來說太重了，尤其遇到上坡時就騎得非常辛苦。
蓄電力與攜帶性要平衡
設計此款太陽能發電箱的蓄源科技，目的是想開發出一項適合戶外活動，又可攜帶的發電設備，不過它的重量似乎影響了攜帶的便利性，適合騎機車的旅行，且4萬8000元的售價也不低，蓄源科技行銷部主任劉銘仁表示，以後類似產品因為原料開採技術進步，開發的量也多了，一定會降價，未來也會考慮多加電池增加蓄電量，大小也會再設計得更好攜帶，讓應用更廣。
原文連結

我的觀點:我喜歡她用"曬"這個字 超可憐的感覺 哈哈哈 當然啦 如果是去南極或是大沙漠或是爬玉山之類的 這是唯一的Solution,可是在台灣騎腳踏車就不是個好Solution 應該這麼說啦可以當Plan B但是不應該是Plan A 所以電池應該是不要帶才對 直接對Notebook電池充電就好了

Comments

[Fred]

This type of experiment has been done by "solar car race" in the US and the world for at least 20 years. www.americansolarchallenge.org and www.wsc.org.au Note where the race was taken place and the size of the battery. My old school (UMR or Missouri S&T) has been in the race (and won a couple of world championship trophies). If there is no Sun, the car is not running at all! The folding bike is not designed for long distance travel. Dragging along a heavy battery was a bad idea. Three key elements for all solar car is low wing drag, largest surface area and highly efficient Lithium Ion battery. The battery itself cost upward of 50K USD (usually a donation from the manufacturer). So even after 20 years, this remains the critical piece of the technology that has not seen much improvements.

[Fred]

BTW, you are absoultely right about charging the laptop battery directly. He can fit his bike with a small bike generator (usually used to power head lamp) and charge the laptop, cell phone and other 3C products that he carries along the trip. I think he can get more power out of his own leg (and gravity) than solar!! One of our freshman engineering project is to design an efficient bike generator for regular 5V/12V/19V charging circuits. The product itself already contain a battery so there is no need to add additional battery.

[Tze-Chien Chu]

I agree, that it is much easy to get the power from his wheel .
Anyway.I think it is fun to let people know the reality of solar power.