{"id":6122,"date":"2016-02-19T13:23:00","date_gmt":"2016-02-19T13:23:00","guid":{"rendered":"http:\/\/www.rc-tabor.com\/wordpress\/?p=6122"},"modified":"2016-02-19T14:18:06","modified_gmt":"2016-02-19T14:18:06","slug":"baterie-a-zase-baterie","status":"publish","type":"post","link":"https:\/\/www.rc-tabor.com\/wordpress\/?p=6122","title":{"rendered":"Baterie a zase baterie …"},"content":{"rendered":"

\"20160218_201638\"\u00a0\u00a0 Nen\u00ed to tak dlouho, co jsem zase s\u00a0n\u011bk\u00fdm \u0159e\u0161il, co vlastn\u011b znamenaj\u00ed ty C-\u010dka ud\u00e1van\u00e1 na bateri\u00edch, pro\u010d se baterie nafukuj\u00ed a dal\u0161\u00ed ot\u00e1zky ohledn\u011b baterek. Nev\u00edm, jestli tomu v\u0161ichni \u00fapln\u011b rozum\u00ed, a tak jsem si \u0159\u00edkal, \u017ee by nebylo \u0161patn\u00e9 se na to trochu pod\u00edvat. Pod\u011blit se o m\u00e9 post\u0159ehy nejen z\u00a0Rc Rally.<\/p>\n

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Ud\u00e1van\u00e1 hodnota na bateri\u00edch je r\u016fzn\u00e1, ale pro rally se objevuj\u00ed nej\u010dast\u011bji hodnoty od 20C a v\u00fd\u0161. Nen\u00ed to m\u00e1lo? Jsou ty baterie dobr\u00e9? Pro\u010d mi baterie ode\u0161la, v\u017edy\u0165 jsem j\u00ed nab\u00edjel spr\u00e1vn\u011b.<\/strong> Tak s\u00a0t\u011bmito dotazy se setk\u00e1v\u00e1m nej\u010dast\u011bji. Ka\u017ed\u00e1 baterie je \u201edobr\u00e1\u201c, ale ne ka\u017ed\u00e1 je dobr\u00e1 na v\u0161echno.<\/p>\n

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\"20160218_192202\"

LRP PulsarTouch v akci<\/p><\/div>\n

Za\u010dnu – Nen\u00ed to m\u00e1lo?<\/strong> V\u00a0Rc Rally je nejb\u011b\u017en\u011bji model osazen motorem 17,5T a odpov\u00eddaj\u00edc\u00edm regul\u00e1torem. Budu tedy vych\u00e1zet, \u017ee v\u00a0modelu je regul\u00e1tor 60A(380A) a motor 17,5T.<\/p>\n

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Z\u00a0t\u011bchto dvou v\u011bc\u00ed je dobr\u00e9 vy\u010d\u00edst dal\u0161\u00ed hodnoty, kter\u00e9 ud\u00e1v\u00e1 v\u00fdrobce. U motoru je to p\u0159edev\u0161\u00edm v\u00fdkon, z\u00a0kter\u00e9ho zjist\u00edme orienta\u010dn\u011b proudov\u00e9 zat\u00ed\u017een\u00ed (pro sv\u00e9 v\u00fdpo\u010dty pou\u017e\u00edv\u00e1m I=v\u00fdkon\/nap\u011bt\u00edm 7,4V). Motory 17,5T maj\u00ed proudov\u00e9 zat\u00ed\u017een\u00ed n\u011bkde kolem 20-27A. Nap\u0159\u00edklad Robitronic 17,5T 20A a LRP X12 24,7A (po\u010d\u00edt\u00e1no z\u00a0v\u00fdkonu 183W\/7,4V). Ov\u0161em tyto hodnoty jsou pouze pro ust\u00e1len\u00fd chod. V\u00a0pr\u016fb\u011bhu vznikaj\u00ed tkz. „proudov\u00e9 \u0161pi\u010dky\u201c (nap\u0159. p\u0159i rozjezdu), kter\u00e9 se po\u010d\u00edtaj\u00ed z\u00a0proudu u st\u0159\u00eddav\u00fdch motor\u016f vyn\u00e1soben\u00edm koeficientem 1,5708 (dle norem). Z\u00a0toho n\u00e1m tedy pomalu vych\u00e1z\u00ed maxim\u00e1ln\u00ed ide\u00e1ln\u00ed zat\u00ed\u017een\u00ed pro motor 17,5T od 27A \u2013 38,8A<\/strong>. M\u00e1me ide\u00e1ln\u00ed zat\u00ed\u017een\u00ed motoru? Nic na modelu nejde ide\u00e1ln\u011b – bez odporu a s\u00a0t\u00edm je dobr\u00e9 tak\u00e9 po\u010d\u00edtat. D\u00e1le je dobr\u00e9 upozornit na \u201etvrd\u00fd zkratov\u00fd proud\u201c hodnota proudu, kter\u00e1 je p\u0159i zkratov\u00e9 z\u00e1t\u011b\u017ei motoru (a\u017e trojn\u00e1sobek \u0161pi\u010dkov\u00e9ho proudu). Tvrd\u00fd – zkratov\u00fd proud nast\u00e1v\u00e1 v\u00a0momentech zastaven\u00ed motoru vn\u011bj\u0161\u00ed silou. P\u0159ek\u00e1\u017ekou v\u00a0pohonu, mechanickou z\u00e1vadou a podobn\u011b. Hodnota tohoto proudu p\u0159i probl\u00e9mu se neust\u00e1le zv\u011bt\u0161uje a\u017e do p\u0159eh\u0159\u00e1t\u00ed, zni\u010den\u00ed motoru (i nap\u0159. odp\u00e1jen\u00ed kabel\u016f), a nebo zni\u010den\u00ed n\u011bjak\u00e9 jin\u00e9 elektroniky, baterie. Ne v\u017edy se tomu d\u00e1 p\u0159edej\u00edt. Pokud nastane n\u011bjak\u00fd podobn\u00fd probl\u00e9m, bu\u010f ho v\u016fbec nezaregistrujete a bude \u201epo\u201c nebo si neuv\u011bdom\u00edte, \u017ee vy sv\u00fdm chov\u00e1n\u00edm jste ho zavinili.<\/p>\n

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Proto nen\u00ed \u0161patn\u00e9 myslet i trochu na \u201ezkratov\u00fd\u201c proud. <\/strong>V\u00a0na\u0161em p\u0159\u00edpad\u011b hodnota kolem 90-120A. <\/strong><\/p>\n

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\u00a0\u00a0 Volba baterie <\/strong>by tedy m\u011bla zohlednit i tyto z\u00e1kladn\u00ed v\u00fdpo\u010dty. Pokud chci\u00a0jezdit s\u00a0modelem p\u0159ed bar\u00e1kem a nehodl\u00e1m jezdit na z\u00e1vody. Volil bych baterie s\u00a0velkou kapacitou a s\u00a0malou hodnotou C\u010dek (b\u00fdvaj\u00ed i levn\u011bj\u0161\u00ed). V\u00a0p\u0159\u00edpad\u011b z\u00e1vod\u016f bych \u0161el n\u011bjakou cestou kompromisu, aby model vydr\u017eel jezdit alespo\u0148 10-15min a nevybil bych baterii pod hodnotu 3,6V na \u010dl\u00e1nek.<\/p>\n

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\"20160218_201638\"

Nano-tech jedno\u010dl\u00e1nek<\/p><\/div>\n

Samotn\u00e1 C\u010dka<\/strong> na baterii jsou pouze koeficientem vypl\u00fdvaj\u00edc\u00edm z\u00a0vlastnost\u00ed baterie. P\u0159edev\u0161\u00edm z\u00a0vnit\u0159n\u00edho odporu baterie. Jedno C lze velmi jednodu\u0161e vypo\u010d\u00edtat a to p\u0159eveden\u00edm kapacity baterie z\u00a0mAh na Ah (pod\u011blen\u00edm kapacity 4200\/1000 = C = 4,2).<\/p>\n

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Kapacita baterie a magick\u00e1 hodnota C\u010dek jsou ov\u0161em st\u00e1le jen \u010diniteli proudu. Hodnota C na baterii ud\u00e1v\u00e1, v\u00a0z\u00e1vislosti na kapacit\u011b, maxim\u00e1ln\u00ed mo\u017en\u00fd odb\u011br z\u00a0baterie v\u00a0kr\u00e1tk\u00e9m \u010dasov\u00e9m \u00faseku \u2013 tzv. \u201e\u0161pi\u010dkov\u00fd proud\u201c baterie. Tento proud m\u016f\u017eeme spo\u010d\u00edtat jednoduch\u00fdm vzorcem a to vyn\u00e1soben\u00edm ji\u017e zm\u00edn\u011bn\u00fdch C\u010dek x kapacita baterie v\u00a0Ah. Nap\u0159. 30 (C) x 4,2 (4200mAh\/1000) = 126A<\/strong>. Ji\u017e z\u00a0tohoto p\u0159\u00edkladu vypl\u00fdv\u00e1, \u017ee zvolen\u00e1 baterie by v\u00a0na\u0161em p\u0159\u00edpad\u011b vyhov\u011bla s rezervou.<\/p>\n

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Pokud pou\u017eijeme baterii s\u00a0men\u0161\u00ed kapacitou nebo hodnotou C\u010dek nap\u0159. 2200mAh a 20C u\u017e bychom se mohli dostat do probl\u00e9m\u016f. V\u00fdsledn\u00e1 hodnota \u0161pi\u010dkov\u00e9ho proudu baterie 44A.<\/strong> Tato hodnota je ji\u017e na hranici a s\u00a0t\u00e9m\u011b\u0159 nulovou rezervou. D\u016fvod probl\u00e9m\u016f je jednoduch\u00fd. Hodnota C je z\u00e1visl\u00e1 i na vnit\u0159n\u00edm odporu baterie a ten se postupn\u011b zvy\u0161uje a t\u00edm se sni\u017euje i mo\u017en\u00fd vyb\u00edjec\u00ed proud. Regul\u00e1tor ov\u0161em z\u00a0baterek bere st\u00e1le stejn\u011b a baterie jsou t\u00edm p\u0159et\u011b\u017eov\u00e1ny, zah\u0159\u00edvaj\u00ed se a sni\u017euj\u00ed se jejich provozn\u00ed vlastnosti.<\/p>\n

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\"20160218_201459\"

Vnit\u0159n\u00ed odpor baterie<\/p><\/div>\n

Proto je pot\u0159eba si uv\u011bdomit, \u017ee baterie maj\u00ed i svou bezpe\u010dnou provozn\u00ed hodnotu nap\u011bt\u00ed z\u00e1vislou na hodnot\u011b nap\u011bt\u00ed na jednotliv\u00fdch \u010dl\u00e1nc\u00edch. Nikdy by nem\u011bla hodnota nap\u011bt\u00ed na jednotliv\u00fdch \u010dl\u00e1nc\u00edch lipol baterie klesnout pod doporu\u010den\u00e9 hodnoty prodejc\u016f. Tyto hodnoty b\u00fdvaj\u00ed kolem 3,3V na \u010dl\u00e1nek. Pod touto hodnotou je riziko minim\u00e1ln\u011b sn\u00ed\u017een\u00ed kapacity vysok\u00e9. K\u00a0tomuto \u00fa\u010delu slou\u017e\u00ed mnoho pom\u016fcek \u201ehl\u00edda\u010d\u016f\u201c nebo p\u0159\u00edmo i program\u016f v\u00a0regul\u00e1torech a nen\u00ed dobr\u00e9 toto podce\u0148ovat.<\/p>\n

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Nab\u00edjen\u00ed bateri\u00ed<\/strong> je jedna z\u00a0dal\u0161\u00edch v\u011bc\u00ed, kter\u00e9 ovliv\u0148uj\u00ed \u017eivotnost a hodnoty bateri\u00ed. V\u00a0z\u00e1sad\u011b plat\u00ed jednoduch\u00e1 pom\u016fcka kapacita mAh\/1000 = hodnota nab\u00edjec\u00edho proudu (=1C). N\u011bkte\u0159\u00ed v\u00fdrobci ud\u00e1vaj\u00ed i hodnoty nab\u00edjec\u00edho proudu vy\u0161\u0161\u00ed i 2C, ale v\u00edce bych u\u017e rad\u011bji neriskoval bez zapojen\u00ed alespo\u0148 teplotn\u00edho \u010didla a neodch\u00e1zel bych od baterie. Pro nab\u00edjen\u00ed star\u0161\u00edch baterek je pot\u0159eba i spr\u00e1vn\u011b nastavit kapacitu baterky do nab\u00edje\u010dky. Nab\u00edje\u010dka sice sb\u00edr\u00e1 zp\u011btn\u011b data z\u00a0baterie, ale z\u00e1kladn\u00ed nastaven\u00ed kapacity je tak\u00e9 d\u016fle\u017eit\u00e9. Nen\u00ed to jen o nastaven\u00ed 1C a a\u0165 se nab\u00edje\u010dka star\u00e1 sama. Ty levn\u011bj\u0161\u00ed to nab\u00edje\u010dky by s\u00a0t\u00edm mohly m\u00edt probl\u00e9m.<\/p>\n

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\"20160218_202716\"

Pr\u016fb\u011bh nab\u00edjen\u00ed<\/p><\/div>\n

Vr\u00e1t\u00edm se k\u00a0prvn\u00edmu nabit\u00ed baterie – o\u017eiven\u00ed<\/strong>. Baterie mus\u00ed m\u00edt u\u017e po n\u00e1kupu v\u00a0sob\u011b n\u011bjak\u00e9 nap\u011bt\u00ed minim\u00e1ln\u011b kolem 75% nominalniho nap\u011bt\u00ed (3V na \u010dl\u00e1nek). Pokud baterie m\u00e1 ne\u00fam\u011brn\u011b m\u00e9n\u011b, tak si nechme baterii rad\u011bji vym\u011bnit ji\u017e po zakoupen\u00ed, abychom p\u0159ede\u0161li mo\u017en\u00fdm probl\u00e9m\u016fm. Prvn\u00ed p\u0159ipojen\u00ed na nab\u00edje\u010dku a nab\u00edjen\u00ed bych doporu\u010dil proudem kolem 0,7C. U vyb\u00edjen\u00ed bych byl tak\u00e9 obez\u0159etn\u011bj\u0161\u00ed a baterie nehonil \u00fapln\u011b na plno od za\u010d\u00e1tku, aby byla k\u0159ivka vyb\u00edjen\u00ed plynul\u00e1 i v\u00a0budoucnu. Nab\u00edjen\u00ed ni\u017e\u0161\u00edm proudem je dobr\u00e9 opakovat i 3x. Po t\u0159et\u00edm nabit\u00ed je baterie p\u0159ipravena na pln\u00e9 zat\u00ed\u017een\u00ed. Pokud v\u00a0t\u011bchto t\u0159ech nabit\u00edch nevznikl probl\u00e9m, m\u016f\u017eeme za\u010d\u00edt baterie pln\u011b zat\u011b\u017eovat.<\/p>\n

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Mnohdy se setk\u00e1v\u00e1m je\u0161t\u011b s\u00a0ot\u00e1zkou: Je nutn\u00e9 v\u017edy balancovat? <\/strong>Baterie, pokud je dob\u0159e naform\u00e1tov\u00e1na, dr\u017e\u00ed hodnoty jednotliv\u00fdch \u010dl\u00e1nk\u016f v setin\u00e1ch voltu. Nerovnom\u011brn\u00fdm vyb\u00edjen\u00edm jsou \u010dl\u00e1nky nam\u00e1h\u00e1ny r\u016fzn\u011b a m\u016f\u017eeme t\u00edm jeden z\u00a0\u010dl\u00e1nk\u016f baterie p\u0159et\u011b\u017eovat. Balancov\u00e1n\u00ed p\u0159i nab\u00edjen\u00ed n\u00e1m hl\u00edd\u00e1, aby byly \u010dl\u00e1nky nab\u00edjeny rovnom\u011brn\u011bji a budouc\u00ed z\u00e1t\u011b\u017e se v\u00a0baterii rozd\u011blovala p\u0159ibli\u017en\u011b stejn\u011b. Pokud ov\u0161em v\u017edy nepou\u017eijete balanc\u00e9r nen\u00ed to a\u017e takov\u00fd probl\u00e9m. Baterie se p\u0159i dal\u0161\u00edm nab\u00edjen\u00ed bude balancovat d\u00e9le. Proto se nebojte, pokud jste zapnuli nab\u00edje\u010dku bez balanc\u00e9ru, \u017ee jste hned zma\u0159ili baterii.<\/p>\n

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\"20160218_192421\"

Balancov\u00e1n\u00ed baterie<\/p><\/div>\n

Co ov\u0161em mnoz\u00ed p\u0159ehl\u00ed\u017eej\u00ed je odpo\u010dinek baterie<\/strong> po z\u00e1t\u011b\u017ei p\u0159ed dal\u0161\u00edm nab\u00edjen\u00edm. Baterie by si m\u011bla po j\u00edzd\u011b chvilku \u201eodd\u00e1chnout\u201c. Nen\u00ed to z\u00a0d\u016fvodu toho, \u017ee je \u201eunaven\u00e1\u201c, ale chemick\u00e1 reakce by se m\u011bla v\u00a0baterii ust\u00e1lit a vyrovnat. Pokud budeme baterii hned po vypnut\u00ed vyp\u00edna\u010de nab\u00edjet, m\u016f\u017eeme se \u010dasem t\u011b\u0161it z\u00a0kr\u00e1sn\u00e9ho \u201ekopa\u010d\u00e1ku\u201c. U n\u011bkter\u00fdch bateri\u00ed d\u0159\u00edve u n\u011bkter\u00fdch pozd\u011bji. Pokud nejsou baterie po j\u00edzd\u011b zah\u0159\u00e1t\u00e9 (co\u017e by nem\u011bli!) nech\u00e1me jim alespo\u0148 10-15min. Pokud jsou baterie zah\u0159\u00e1t\u00e9, tak do t\u00e9 doby dokud se nedostanou na teplotu okol\u00ed, ale op\u011bt minim\u00e1ln\u011b alespo\u0148 15min.<\/p>\n

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\"20160218_201132-1\"

Vyb\u00edjen\u00ed – STORGE<\/p><\/div>\n

Uskladn\u011bn\u00ed bateri\u00ed<\/strong>. Tato \u010d\u00e1st je mnohdy tak\u00e9 podce\u0148ov\u00e1na. Baterie po vykon\u00e1n\u00ed sv\u00e9 pr\u00e1ce je pot\u0159eba nejen vybalancovat, ale p\u0159i del\u0161\u00edm nepou\u017e\u00edv\u00e1n\u00ed (v\u00edce jak t\u00fdden) i vyb\u00edt na hodnotu uskladn\u011bn\u00ed. Tato hodnota, nen\u00ed jak se mnoz\u00ed miln\u011b domn\u00edvaj\u00ed, pln\u011b nabit\u00e1 baterie, ale pohybuje se kolem 90%<\/strong> pln\u00e9 baterie. V\u00a0na\u0161em p\u0159\u00edpad\u011b kolem 3,8V na \u010dl\u00e1nek. Tato hodnota je pro uskladn\u011bn\u00ed baterek dle v\u00fdrobc\u016f nejlep\u0161\u00ed a nejm\u00e9n\u011b baterie zat\u011b\u017euje. Pro vyb\u00edjen\u00ed na tuto hodnotu jsou v\u00a0nab\u00edje\u010dk\u00e1ch i programy, kter\u00e9 baterie vybij\u00ed na po\u017eadovan\u00e9 skladovac\u00ed nap\u011bt\u00ed \u2013 funkce STORAGE.<\/p>\n

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\"20160218_201616\"

Vhodn\u00e1 pom\u016fcka pro nab\u00edjen\u00ed – ochrann\u00fd s\u00e1\u010dek<\/p><\/div>\n

Dlouhos\u00e1hl\u00e9 pov\u00edd\u00e1n\u00ed, ale snad to n\u011bkomu trochu pom\u016f\u017ee t\u0159eba i p\u0159i v\u00fdb\u011bru baterie. Netvrd\u00edm, \u017ee v\u0161e co je v\u00a0\u010dl\u00e1nku, mus\u00ed b\u00fdt striktn\u011b dodr\u017eov\u00e1no. J\u00e1 se toho sna\u017e\u00edm dr\u017eet a s\u00a0baterkami jsem velmi spokojen.<\/p>\n

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Osobn\u011b pou\u017e\u00edv\u00e1m baterie minim\u00e1ln\u011b s\u00a030C v\u00a0rally. Na okruz\u00edch se pohybuji kolem 60-100C. Nekupuji ty nejlevn\u011bj\u0161\u00ed, ale dr\u017e\u00edm se zlat\u00e9 st\u0159edn\u00ed cesty a zat\u00edm se to v\u017edy vyplatilo.<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u00a0\u00a0 Nen\u00ed to tak dlouho, co jsem zase s\u00a0n\u011bk\u00fdm \u0159e\u0161il, co vlastn\u011b znamenaj\u00ed ty C-\u010dka ud\u00e1van\u00e1 na bateri\u00edch, pro\u010d se baterie nafukuj\u00ed a dal\u0161\u00ed ot\u00e1zky ohledn\u011b baterek. Nev\u00edm, jestli tomu v\u0161ichni<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-6122","post","type-post","status-publish","format-standard","hentry","category-reportaz"],"_links":{"self":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/6122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6122"}],"version-history":[{"count":0,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/6122\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rc-tabor.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}