Manufacturing variations and uneven aging cause some cells in a battery pack to lose capacity more quickly. In a traditional fixed-link system, this means that the entire vehicle must adapt its performance to the cell that is in the worst condition. The researchers compare this to a group of hikers tied together by a rope, where the entire group must move at the speed of the slowest member.<\/p>\n\n\n\n
The new system solution, called \u201cadaptive\u201d or \u201creconfigurable battery packs,\u201d allows the connections between cells or groups of cells to be changed using switches and control systems. When an individual cell begins to limit its performance, the system simply removes it from the circuit, allowing the rest of the battery pack to continue operating. Data shows that idealized control at the individual cell level can extend battery life by more than 20 percent in high-voltage vehicles. In practice, control at the cell group level is more likely to be used, which simplifies the hardware but has a slightly smaller effect.<\/p>\n\n\n\n
Modeling results for an electric car with an 80 kWh battery and driving 12,000 kilometers per year show that the need to replace the battery pack could be postponed by about 14 months. While a conventional battery would need to be replaced after ten years, the flexible architecture would only reach the same level of wear after about eleven years. Since the benefits are more pronounced with a larger number of cells connected in series, the technology is particularly interesting for high-voltage, long-range vehicles and electric trucks.<\/p>\n\n\n\n
A techno-economic analysis shows that the additional investment in switches and control electronics can be recovered. The system is economically justified if the additional production cost does not exceed approximately 7 percent and the vehicle travels less than 12,150 kilometers per year.<\/p>","protected":false},"excerpt":{"rendered":"
Razlike v proizvodnji in neenakomerno staranje povzro\u010dajo, da nekatere celice v baterijskem sklopu hitreje izgubljajo zmogljivost. Pri klasi\u010dnih fiksnih vezavah to pomeni, da mora celotno vozilo svoje delovanje prilagoditi celici, ki je v najslab\u0161em stanju. Raziskovalci to primerjajo s skupino pohodnikov, povezanih z vrvjo, pri kateri se mora celotna skupina premikati s hitrostjo najpo\u010dasnej\u0161ega \u010dlana. […]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[90],"tags":[226],"class_list":["post-8267","post","type-post","status-publish","format-standard","hentry","category-avtomobilizem","tag-elektricni-avtomobili"],"acf":{"subtitle":"V dana\u0161njih baterijskih sklopih za elektri\u010dna vozila naj\u0161ibkej\u0161a celica pogosto dolo\u010da zmogljivost celotnega sistema, \u010deprav so preostale \u0161e vedno v odli\u010dnem stanju. Raziskovalci s \u0161vedske tehni\u0161ke univerze Chalmers so skupaj z industrijskimi partnerji preu\u010dili re\u0161itev, pri kateri se po\u0161kodovane ali degradirane celice preprosto izklju\u010dijo iz delovanja.","heading":"","summary":"Novi prilagodljivi baterijski sklopi z izklopom izrabljenih celic podalj\u0161ajo \u017eivljenjsko dobo baterije za ve\u010d kot 20 % in prelo\u017eijo njeno menjavo za 14 mesecev.","thumbnail_small":"https:\/\/racunalniske-novice.com\/wp-content\/uploads\/2021\/09\/Xiaomi_car_720-560x315.jpg","thumbnail_large":"https:\/\/racunalniske-novice.com\/wp-content\/uploads\/2021\/09\/Xiaomi_car_720-1024x576.jpg","thumbnail_caption":"","gallery":"","video_gallery":null,"author":"","links":null,"sources":null,"skip_language":[]},"yoast_head":"\n