弥合太阳能和电池之间的差距

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2016年，Solar Impulse 2成为第一架在世界各地飞行的太阳能飞机。
这架飞机将在30到60英里/小时之间飞行并需要16个月才能完成，尽管实际飞行时间要少得多。
这架单人客机白天将爬升至29,000英尺，为电池充电，并在夜间缓慢滑行至约5000英尺，以节省电池电量。
Solar Impulse 2拥有17,000个太阳能电池，翼展时间比波音747长。电池约占飞机重量的四分之一。
1
商业太阳能航空公司还有很长的路要走，但太阳能作为工业，商业和住宅应用的能源来源越来越受欢迎。
对设计用于将太阳能电池板连接到电池的电源管理集成电路（PMIC）的需求日益增长。
传统上，简单的方法是“通过二极管将电池连接到太阳能电池板。”2这种方法有许多限制，主要是处理非常窄的电压带。
使用太阳能，从晴天到阴天，从一天开始到结束，电力将大不相同。
这里有很多变化，没有配备二极管来处理。
如果功率水平增加或负载增加超出二极管的能力，系统将面临灾难性故障的风险。
现在有更好的解决方案。
凌力尔特公司/ ADI公司的电源产品广泛，可以补充太阳能，特别是在充电和维护电池方面。
“LTC4015是一款多功能同步降压充电器，能够支持各种电池化学，包括铅酸，锂离子和LiFePO4。”3
LTC4015是一款可控制输入电压，输入电流，电池充电电压和电池充电电流的控制器，非常适合太阳能应用中的电池存储解决方案。
这样做的方法是使用最大功率点跟踪（MPPT）算法。
利用MPPT算法，系统可以区分多个峰值功率电平，这对于太阳能产生的各种功率电平是理想的。
LTC4015可处理高达35 V的电压输入。大多数太阳能电池板的峰值输出电压为17 V.充电输入电压范围为4.5 V至35 V.
LTC4015是一款多化学降压控制器和充电器，适用于需要宽输入范围，充电电池和太阳能等电源负载的电池电源解决方案。
Solar Impulse 2取得了相当大的成就。
我想知道是否会有阳光动力3？
参考文献：
1  - 太阳飞机在完成环球旅行后创造历史。
https://www.theguardian.com/envi ... ound-the-world-trip
2  - 最大化太阳能电池板功率输出的威廉希尔官方网站。
http://www.analog.com/en/technic ... l-power-output.html
3  - 多化学电池充电器支持太阳能电池板的最大功率点跟踪http://www.analog.com/media/en/t ... C4015-TrevorBarcelo
.PDF

以上来自于谷歌翻译

以下为原文

In 2016, Solar Impulse 2 made history by being the first solar powered plane to fly around the world. The plane would fly between 30 and 60 mph and took 16 months to complete, although the actual air time was substantially less. This single passenger plane would climb to 29,000 feet during the day to charge the batteries and slowly glide to about 5000 feet during the night to conserve battery power. The Solar Impulse 2 had 17,000 solar cells and wing span longer than a Boeing 747. The batteries made up roughly quarter of the planes weight. 1

Commercial solar powered airlines are still a long way off, but solar power is gaining traction as a source of energy for industrial, commercial, and residential applications. There is a growing need for power management integrated circuits (PMICs) designed to connect solar panels to batteries. Traditionally, the simple way “is to connect a battery to the solar panel through a diode.” 2 This method has a number of limitations mainly dealing with a very narrow voltage band. With solar power, power will greatly vary from sunny days to cloudy days, from the start of the day to the end. There is a lot of variation here that a diode is not equipped to deal with. If power levels increase or the load increases beyond the ability of the diode, the system is at risk of catastrophic failure.
Now there are better solutions available. Power by Linear™ / Analog Devices has a wide range of products to complement solar power especially when it comes to charging and maintaining batteries. “The LTC4015 is a versatile synchronous step-down charger capable of supporting a variety of battery chemistries including lead-acid, Li-ion and LiFePO4.” 3
The LTC4015 is a controller that can regulate input voltage, input current, battery charge voltage, and battery charge current, which makes it ideal for battery storage solutions found in solar power applications. The way that this is done is by using the Maximum Power Point Tracking (MPPT) algorithm. With the MPPT algorithm the system can distinguish between multiple peak power levels, which is ideal for various power levels produced by solar power. The LTC4015 can handle voltage inputs up to 35 V. Most solar panels have a peak output voltage of 17 V. The charging input voltage range is from 4.5 V to 35 V.
The LTC4015 is a multi-chemistry buck controller and charger ideal for a battery power solution that requires wide input ranges, charging batteries, and supporting loads from power sources such as solar power.
Solar Impulse 2 was quite the accomplishment. I wonder if there will be a Solar Impulse 3?

References:
1 – Solar Plane makes history after completing round-the-world trip. https://www.theguardian.com/envi ... ound-the-world-trip
2 – Techniques to Maximize Solar Panel Power Output. http://www.analog.com/en/technic ... l-power-output.html
3 – Multi-Chemistry Battery charger Supports Maximum Power Point Tracking for Solar Panels http://www.analog.com/media/en/t ... 5-TrevorBarcelo.pdf

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