{"id":121,"date":"2019-05-21T17:02:23","date_gmt":"2019-05-21T15:02:23","guid":{"rendered":"http:\/\/www.airenergy.de\/en\/?page_id=121"},"modified":"2025-07-22T13:45:43","modified_gmt":"2025-07-22T11:45:43","slug":"solar-impulse-i","status":"publish","type":"page","link":"https:\/\/www.airenergy.de\/en\/referenzprojekte\/solar-impulse-i\/","title":{"rendered":"Solar Impulse I & II"},"content":{"rendered":"

The Solar Impulse team aims to circle the earth with a solar and battery-powered aircraft lacking other energy sources (e.g., fuel). To such end, the aircraft must fly non-stop for several days. In particular, driving energy must be provided by highly efficient batteries during the night.<\/p>

Air Energy is proud to be the specialised partner and battery supplier to this pioneering project.<\/p>

HB-SIA<\/h1>

On 26 June 2009, project initiators Bertrand Picard and Andr\u00e9 Boschberg presented the first test vehicle, the Solar Impulse I (HB-SIA). This solar-powered aircraft features a wingspan of 63.4 m and is powered by 11,628 solar cells, storing any excess energy in four of Air Energy-supplied battery packs.<\/p>

Only a revolutionary technology and the most efficient and lightweight materials could make this project a reality. Undeterred by this challenge, we developed a Li-ion energy storage solution from scratch. In this case, Kokam cells delivered an energy density of 243 Wh\/kg.<\/p>

On 7 July 2010, Solar Impulse I flew overnight on battery power alone for the first time. With a state of charge of 40% at sunrise, the aircraft had sufficient battery reserve to ascend during the day, recharge its batteries and, theoretically, fly through another night.<\/p><\/div><\/div><\/div>

Solar Impulse I records
<\/strong><\/p>

max. flight altitude:<\/span>
<\/strong>9235m
max. height gain:
<\/span>8744m
endurance:<\/span>
26:10:19
flight range:<\/span>
1116 km<\/p><\/div><\/div><\/div><\/div>

\"Solarimpulse1\"<\/a><\/div><\/div><\/div>
<\/div>
<\/div>
<\/div><\/div>

HB-SIB<\/h1>\n

At the end of 2013, following the successful test of Solar Impulse I, Air Energy delivered new batteries for its much larger successor, Solar Impulse II (HB-SIB). The four correspondingly larger batteries from Aachen were refitted with improved cell technology, accounting thus for approximately 25% of the take-off weight. Energy density was increased to 260 Wh \/ kg.<\/p>\n

This aircraft should circle the world in 10 stages spread over 120 days. The first test flights were successfully completed in the spring of 2014, and the round-the-world trip is planned from April to July 2015.<\/p>\n<\/div><\/div><\/div>

Specifications of Solar Impulse II<\/strong><\/p>

energy density of\u00a0 batteries:<\/span>\u00a0
<\/strong>260 Wh\/kg
weight of the aircraft:
<\/span>2,3 t
wingspan:<\/span>
72 m
amount of solar cells:<\/span>
>\u00a017000
volume of Cockpit:
<\/span><\/span>3,8 m^3
<\/span><\/span><\/p><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

The Solar Impulse team aims to circle the earth with a solar and battery-powered aircraft lacking other energy sources (e.g., fuel). To such end, the aircraft must fly non-stop for several days. In particular, driving energy must be provided by highly efficient batteries during the night.Air Energy is proud to be the specialised partner and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":14,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-121","page","type-page","status-publish","hentry","post"],"yoast_head":"\nLightweight battery system for the Solar Impulse I & II - Air Energy<\/title>\n<meta name=\"description\" content=\"Air Energy provides efficient lightweight battery systems for Bertrand Piccard und Andre Borschberg's world record-breaking project Solar Impulse I & II.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.airenergy.de\/en\/referenzprojekte\/solar-impulse-i\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lightweight battery system for the Solar Impulse I & II - 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