{"id":4993,"date":"2025-12-08T08:52:34","date_gmt":"2025-12-08T08:52:34","guid":{"rendered":"https:\/\/www.kmdpower.com\/?p=4993"},"modified":"2025-12-08T08:52:37","modified_gmt":"2025-12-08T08:52:37","slug":"low-temperature-performance-sodium-ion-vs-lfp-for-outdoor-monitoring-equipment","status":"publish","type":"post","link":"https:\/\/www.kmdpower.com\/cs\/news\/low-temperature-performance-sodium-ion-vs-lfp-for-outdoor-monitoring-equipment\/","title":{"rendered":"V\u00fdkon p\u0159i n\u00edzk\u00fdch teplot\u00e1ch: Iont sodn\u00fd vs. LFP pro venkovn\u00ed monitorovac\u00ed za\u0159\u00edzen\u00ed"},"content":{"rendered":"

V\u00fdkon p\u0159i n\u00edzk\u00fdch teplot\u00e1ch: Ionty sod\u00edku vs. LFP pro venkovn\u00ed monitorovac\u00ed za\u0159\u00edzen\u00ed. Je to zn\u00e1m\u00fd p\u0159\u00edb\u011bh pro pracovn\u00edky ve\u0159ejn\u00fdch zak\u00e1zek: va\u0161e syst\u00e9my LFP nap\u00e1jen\u00e9 sol\u00e1rn\u00edmi \u010dl\u00e1nky funguj\u00ed bezchybn\u011b v \u010dervenci, ale kdy\u017e ude\u0159\u00ed prvn\u00ed zimn\u00ed mrazy, p\u0159estanou fungovat. Nehroz\u00ed v\u00e1m porucha za\u0159\u00edzen\u00ed; bojujete s tvrd\u00fdm \"limitem nab\u00edjen\u00ed za studena\" standardn\u00edho lithia, kter\u00e9 fyzicky nem\u016f\u017ee p\u0159ijmout nab\u00edjen\u00ed p\u0159i teplot\u011b ni\u017e\u0161\u00ed ne\u017e 0 \u00b0C. Jedin\u00fdm \u0159e\u0161en\u00edm, jak udr\u017eet nep\u0159etr\u017eitou provozuschopnost kritick\u00e9ho outdoorov\u00e9ho vybaven\u00ed, bylo po l\u00e9ta zabalen\u00ed bateri\u00ed do energeticky n\u00e1ro\u010dn\u00fdch topn\u00fdch pol\u0161t\u00e1\u0159k\u016f - n\u00e1kladn\u00e1 a nespolehliv\u00e1 z\u00e1plata. Existuje lep\u0161\u00ed zp\u016fsob. Je na \u010dase, abychom si promluvili o Sady sod\u00edko-iontov\u00fdch bateri\u00ed<\/a><\/strong>, chemie, kter\u00e1 chlad nejen p\u0159e\u017eije, ale i prosp\u00edv\u00e1.<\/p>

\"\"<\/figure>

Kamada Power 12V 100Ah sod\u00edkoiontov\u00e1 baterie<\/a><\/strong><\/p>

Probl\u00e9m \"zamrzl\u00e9 baterie\": pro\u010d LFP v zim\u011b selh\u00e1v\u00e1<\/strong><\/h2>

Abychom pochopili, pro\u010d se sod\u00edkov\u00e9 baterie prosazuj\u00ed na pr\u016fmyslov\u00fdch trz\u00edch v EU a USA, mus\u00edme se nejprve pod\u00edvat, pro\u010d m\u00e1 lithium-\u017eelezo-fosf\u00e1t (LFP) probl\u00e9my, kdy\u017e kles\u00e1 rtu\u0165.<\/p>

Limit nab\u00edjen\u00ed (0\u00b0C\/32\u00b0F)<\/strong><\/h3>

V\u011bt\u0161ina datov\u00fdch list\u016f bateri\u00ed LFP uv\u00e1d\u00ed teplotu vyb\u00edjen\u00ed a\u017e -20 \u00b0C. Na pap\u00ed\u0159e to vypad\u00e1 dob\u0159e, ale je to past. Skute\u010dn\u00fdm \u00fazk\u00fdm hrdlem nen\u00ed vyb\u00edjen\u00ed<\/em>; je to nab\u00edjen\u00ed<\/strong>.<\/p>

Zde je technick\u00e1 realita: V lithiov\u00e9m \u010dl\u00e1nku se ionty pohybuj\u00ed mezi katodou a anodou prost\u0159ednictv\u00edm kapaln\u00e9ho elektrolytu. P\u0159i teplot\u00e1ch bl\u00ed\u017e\u00edc\u00edch se bodu mrazu (0 \u00b0C\/32 \u00b0F) se tento elektrolyt st\u00e1v\u00e1 pomal\u00fdm. Zvy\u0161uje se viskozita.<\/p>

Pokud se v tomto stavu pokus\u00edte do baterie vnutit nab\u00edjec\u00ed proud, lithiov\u00e9 ionty se nemohou dostate\u010dn\u011b rychle interkalovat (absorbovat) do grafitov\u00e9 anody. M\u00edsto toho se hromad\u00ed na povrchu anody v kovov\u00e9 form\u011b. To se naz\u00fdv\u00e1 Pokovov\u00e1n\u00ed lithiem<\/strong>.<\/p>

Pokryt\u00ed lithiem je katastrof\u00e1ln\u00ed. Trvale sni\u017euje kapacitu a m\u016f\u017ee vytv\u00e1\u0159et dendrity - mikroskopick\u00e9 hroty, kter\u00e9 proraz\u00ed separ\u00e1tor a zp\u016fsob\u00ed zkrat. Z tohoto d\u016fvodu m\u00e1 kvalitn\u00ed syst\u00e9m spr\u00e1vy bateri\u00ed (BMS) pevn\u011b zak\u00f3dovan\u00e9 pravidlo: P\u0159i teplot\u011b ni\u017e\u0161\u00ed ne\u017e 0 \u00b0C odpojte ve\u0161ker\u00fd nab\u00edjec\u00ed proud.<\/strong><\/p>

Tak\u017ee i kdy\u017e je slune\u010dn\u00fd zimn\u00ed den, va\u0161e baterie LFP sed\u00ed a odm\u00edt\u00e1 p\u0159ijmout jedin\u00fd watt energie.<\/p>

Skryt\u00e9 n\u00e1klady na topn\u00e9 podlo\u017eky<\/strong><\/h3>

In\u017een\u00fd\u0159i se sna\u017eili tento probl\u00e9m vy\u0159e\u0161it pomoc\u00ed vyh\u0159\u00edvac\u00edch pol\u0161t\u00e1\u0159k\u016f. Zd\u00e1 se, \u017ee logika je spr\u00e1vn\u00e1: pou\u017e\u00edt trochu energie z baterie, aby se \u010dl\u00e1nky zah\u0159\u00e1ly na 5 \u00b0C, a pak za\u010d\u00edt nab\u00edjet.<\/p>

Z na\u0161ich zku\u0161enost\u00ed s pr\u016fmyslov\u00fdmi z\u00e1kazn\u00edky v\u0161ak vypl\u00fdv\u00e1, \u017ee matematika v ter\u00e9nu funguje jen z\u0159\u00eddka.<\/p>

Typick\u00e1 topn\u00e1 f\u00f3lie spot\u0159ebuje 20-30 W. V zim\u011b je doba slune\u010dn\u00edho svitu kr\u00e1tk\u00e1 - asi 4 a\u017e 5 hodin \u00fa\u010dinn\u00e9ho sv\u011btla. Pokud m\u00e1te standardn\u00ed 50W nebo 100W sol\u00e1rn\u00ed panel, oh\u0159\u00edva\u010d se st\u00e1v\u00e1 parazitem. Sp\u00e1l\u00ed prvn\u00ed dv\u011b hodiny slune\u010dn\u00edho sv\u011btla jen ve snaze zah\u0159\u00e1t baterii. Ne\u017e se baterie zah\u0159eje natolik, aby se mohla nab\u00edt, slunce u\u017e zapad\u00e1. Nakonec se dostanete do energetick\u00e9ho deficitu a syst\u00e9m se nakonec vypne.<\/p>

Pokles nap\u011bt\u00ed a restarty za\u0159\u00edzen\u00ed<\/strong><\/h3>

I kdy\u017e je baterie je\u0161t\u011b nabit\u00e1, chladn\u00e9 po\u010das\u00ed zp\u016fsobuje, \u017ee se baterie Vnit\u0159n\u00ed odpor (IR)<\/strong> bun\u011bk LFP, aby se objevily \u0161pi\u010dky.<\/p>

\u0158ekn\u011bme, \u017ee bezpe\u010dnostn\u00ed kamera spust\u00ed sv\u00e9 LED diody no\u010dn\u00edho vid\u011bn\u00ed. To zp\u016fsob\u00ed n\u00e1hl\u00fd odb\u011br proudu. Proto\u017ee vnit\u0159n\u00ed odpor baterie je kv\u016fli chladu vysok\u00fd, nap\u011bt\u00ed okam\u017eit\u011b poklesne. Pokud klesne pod mezn\u00ed nap\u011bt\u00ed kamery (obvykle 10,8 V nebo 11 V u 12V syst\u00e9m\u016f), kamera se restartuje. Vstoup\u00ed do \"zav\u00e1d\u011bc\u00ed smy\u010dky\" a d\u00e1le vyb\u00edj\u00ed baterii, ani\u017e by zaznamen\u00e1vala data.<\/p>

Sod\u00edk-iontov\u00e9: Chladn\u00e9 po\u010das\u00ed m\u011bn\u00ed pravidla hry<\/strong><\/h2>

Sod\u00edkovo-iontov\u00e1 baterie<\/a><\/strong> (Na-ion) nen\u00ed jen levn\u011bj\u0161\u00ed alternativou k lithiu, ale je to i konstruk\u010dn\u011b dokonalej\u0161\u00ed zv\u00ed\u0159e pro extr\u00e9mn\u00ed teploty.<\/p>

Nab\u00edjen\u00ed p\u0159i -20 \u00b0C bez oh\u0159evu<\/strong><\/h3>

To je kl\u00ed\u010dov\u00e1 funkce pro v\u0161echny, kdo navrhuj\u00ed off-grid syst\u00e9my. D\u00edky jedine\u010dn\u00fdm vlastnostem elektrolyt\u016f na b\u00e1zi sod\u00edku a anod z tvrd\u00e9ho uhl\u00edku si ionty sod\u00edku zachov\u00e1vaj\u00ed vysokou pohyblivost i v mraziv\u00fdch podm\u00ednk\u00e1ch.<\/p>

Sod\u00edkovo-iontov\u00e9 baterie m\u016f\u017eete bezpe\u010dn\u011b nab\u00edjet p\u0159i -20\u00b0C<\/strong> p\u0159i p\u0159im\u011b\u0159en\u00fdch rychlostech (obvykle 0,5C a\u017e 1C), ani\u017e by hrozilo riziko vzniku pokoven\u00ed nebo dendrit\u016f.<\/p>

Zamyslete se nad t\u00edm, co to znamen\u00e1 pro dimenzov\u00e1n\u00ed sol\u00e1rn\u00edch za\u0159\u00edzen\u00ed. Nemus\u00edte pl\u00fdtvat energi\u00ed na topn\u00fd odpor. 100% energie, kterou v\u00e1\u0161 sol\u00e1rn\u00ed panel z\u00edsk\u00e1, jde p\u0159\u00edmo do chemick\u00e9ho z\u00e1sobn\u00edku. V podm\u00ednk\u00e1ch slab\u00e9ho osv\u011btlen\u00ed v seversk\u00e9 nebo severoamerick\u00e9 zim\u011b se po\u010d\u00edt\u00e1 ka\u017ed\u00e1 watthodina.<\/p>

Zachov\u00e1n\u00ed kapacity (90% vs 50%)<\/strong><\/h3>

Pod\u00edvejme se na data. Pokud vezmete standardn\u00ed LFP pack a vystav\u00edte jej teplot\u011b -20 \u00b0C, m\u016f\u017eete z n\u011bj - pokud budete m\u00edt \u0161t\u011bst\u00ed - z\u00edskat 50% a\u017e 60% jeho jmenovit\u00e9 kapacity. Spadne z \u00fatesu.<\/p>

Naproti tomu sod\u00edkov\u00e9 ionty si zachov\u00e1vaj\u00ed p\u0159ibli\u017en\u011b 85% a\u017e 90%<\/strong> sv\u00e9 kapacity p\u0159i -20 \u00b0C. Dokonce jsme vid\u011bli testy p\u0159i -30 \u00b0C, kdy st\u00e1le poskytuj\u00ed v\u00edce ne\u017e 80%. Pro pracovn\u00edka odpov\u011bdn\u00e9ho za z\u00e1sobov\u00e1n\u00ed to znamen\u00e1, \u017ee nemus\u00edte kupovat masivn\u011b p\u0159edimenzovanou baterii jen proto, abyste kompenzovali zimn\u00ed ztr\u00e1ty. Sod\u00edkov\u00e1 baterie s kapacitou 100 Ah se v zim\u011b chov\u00e1 jako 100Ah baterie, nikoliv jako 50Ah baterie.<\/p>

Stabiln\u00ed provozn\u00ed nap\u011bt\u00ed<\/strong><\/h3>

Vzpom\u00edn\u00e1te si na probl\u00e9m \"poklesu nap\u011bt\u00ed\"? Iont sod\u00edku m\u00e1 p\u0159irozen\u011b vy\u0161\u0161\u00ed iontovou vodivost. To m\u00e1 za n\u00e1sledek ni\u017e\u0161\u00ed vnit\u0159n\u00ed odpor za studena. Kdy\u017e se modem zapne, aby p\u0159en\u00e1\u0161el data, nap\u011bt\u00ed z\u016fst\u00e1v\u00e1 strnul\u00e9. Va\u0161e za\u0159\u00edzen\u00ed z\u016fstane v provozu.<\/p>

P\u0159\u00edpadov\u00e1 studie: Sol\u00e1rn\u00ed kamera pro voln\u011b \u017eij\u00edc\u00ed zv\u00ed\u0159ata v Kanad\u011b (-25 \u00b0C)<\/strong><\/h2>

Ned\u00e1vno jsme konzultovali projekt zahrnuj\u00edc\u00ed monitorovac\u00ed stanice pro voln\u011b \u017eij\u00edc\u00ed \u017eivo\u010dichy v severn\u00ed Albert\u011b v Kanad\u011b. Tamn\u00ed prost\u0159ed\u00ed je krut\u00e9, teploty se cel\u00e9 t\u00fddny pohybuj\u00ed kolem -25 \u00b0C.<\/p>

Ne\u00fasp\u011b\u0161n\u00e9 nastaven\u00ed LFP (p\u0159edimenzovan\u00e9 a slo\u017eit\u00e9)<\/strong><\/h3>

P\u016fvodn\u00ed nastaven\u00ed pou\u017e\u00edvalo 12V 100Ah baterii LiFePO4 s integrovanou samo\u010dinnou BMS. Pro podporu oh\u0159evu museli instalovat 100W sol\u00e1rn\u00ed panel.<\/p>

V\u00fdsledek?<\/strong> Selh\u00e1n\u00ed. B\u011bhem t\u00fddenn\u00edho zata\u017een\u00e9ho po\u010das\u00ed nedok\u00e1zal sol\u00e1rn\u00ed panel generovat dostate\u010dn\u00fd proud pro provoz oh\u0159\u00edva\u010de. a<\/em> nab\u00edjen\u00ed baterie. Topen\u00ed vy\u010derpalo rezervn\u00ed energii a syst\u00e9m byl t\u0159i t\u00fddny v \u00fatlumu, dokud nemohl p\u0159ijet technik (se zna\u010dn\u00fdmi n\u00e1klady), aby jednotku vym\u011bnil.<\/p>

\u00dasp\u011bch sod\u00edkov\u00fdch iont\u016f (jednoduch\u00e9 a robustn\u00ed)<\/strong><\/h3>

Vym\u011bnili jsme jednotku za sod\u00edko-iontov\u00fd akumul\u00e1tor a skute\u010dn\u011b jsme sn\u00ed\u017een\u00e1 kategorie<\/em> sol\u00e1rn\u00edho panelu na 50 W.<\/p>

V\u00fdsledek?<\/strong> \u00dasp\u011bch. I p\u0159i v\u00fdchodu slunce a teplot\u011b vzduchu -20 \u00b0C sod\u00edkov\u00e1 baterie okam\u017eit\u011b p\u0159ijala nab\u00edjec\u00ed proud. Nebylo t\u0159eba p\u0159ikrmovat \u017e\u00e1dnou topnou vlo\u017eku. Syst\u00e9m z\u016fstal v provozu 24 hodin denn\u011b po celou zimu. Jednoduchost odstran\u011bn\u00ed syst\u00e9mu tepeln\u00e9ho \u0159\u00edzen\u00ed ve skute\u010dnosti zv\u00fd\u0161ila celkovou spolehlivost.<\/p>

Velikost vs. v\u00fdkon: Kompromis mezi tvarov\u00fdm faktorem a v\u00fdkonem<\/strong><\/h2>

Chci b\u00fdt transparentn\u00ed - sod\u00edk nen\u00ed magie a st\u00e1le plat\u00ed fyzik\u00e1ln\u00ed z\u00e1kony. Existuje kompromis, kter\u00fd se obvykle t\u00fdk\u00e1 hustoty.<\/p>

Pro\u010d je sod\u00edko-iontov\u00e1 baterie objemn\u011bj\u0161\u00ed<\/strong><\/h3>

Atomy sod\u00edku jsou fyzik\u00e1ln\u011b v\u011bt\u0161\u00ed a t\u011b\u017e\u0161\u00ed ne\u017e atomy lithia. V d\u016fsledku toho je gravimetrick\u00e1 hustota energie sou\u010dasn\u00fdch sod\u00edkov\u00fdch iontov\u00fdch \u010dl\u00e1nk\u016f p\u0159ibli\u017en\u011b stejn\u00e1 jako u jin\u00fdch \u010dl\u00e1nk\u016f. 140-160 Wh\/kg<\/strong>, ve srovn\u00e1n\u00ed s LFP, kter\u00e1 dosahuje 160-170 Wh\/kg (a NCM, kter\u00e1 je mnohem vy\u0161\u0161\u00ed).<\/p>

Z praktick\u00e9ho hlediska m\u016f\u017ee b\u00fdt sod\u00edkov\u00e1 baterie 20% a\u017e 30% fyzicky v\u011bt\u0161\u00ed<\/strong> ne\u017e ekvivalentn\u00ed balen\u00ed LFP.<\/p>

Z\u00e1le\u017e\u00ed na velikosti sk\u0159\u00edn\u011bk pro mont\u00e1\u017e na sloup?<\/strong><\/h3>

U elektromobilu z\u00e1le\u017e\u00ed na velikosti. Ale pro stacion\u00e1rn\u00ed sk\u0159\u00ed\u0148 NEMA na sloupu elektrick\u00e9ho veden\u00ed? Obvykle ne.<\/p>

Po\u017eadavek na instala\u010dn\u00ed firmu, aby pou\u017eila o n\u011bco hlub\u0161\u00ed vodot\u011bsnou schr\u00e1nku, je jen drobnou nep\u0159\u00edjemnost\u00ed. Ve skute\u010dnosti je zv\u011bt\u0161en\u00ed velikosti sk\u0159\u00edn\u011b o 2 palce v\u00fdrazn\u011b levn\u011bj\u0161\u00ed a jednodu\u0161\u0161\u00ed ne\u017e modernizace sol\u00e1rn\u00edho panelu, dr\u017e\u00e1k\u016f v\u011btrn\u00e9ho zat\u00ed\u017een\u00ed a kabel\u00e1\u017ee pro podporu vyh\u0159\u00edvan\u00e9ho lithiov\u00e9ho syst\u00e9mu.<\/p>

Anal\u00fdza syst\u00e9mov\u00fdch n\u00e1klad\u016f: Pro\u010d je sod\u00edk celkov\u011b levn\u011bj\u0161\u00ed<\/strong><\/h2>

Pokud se dnes pod\u00edv\u00e1te pouze na cenu \u010dl\u00e1nku, m\u016f\u017ee se zd\u00e1t, \u017ee sod\u00edk je o n\u011bco dra\u017e\u0161\u00ed nebo na stejn\u00e9 \u00farovni jako LFP, a to kv\u016fli novink\u00e1m v dodavatelsk\u00e9m \u0159et\u011bzci. Pracovn\u00edci odpov\u011bdn\u00ed za zad\u00e1v\u00e1n\u00ed ve\u0159ejn\u00fdch zak\u00e1zek se v\u0161ak mus\u00ed pod\u00edvat na Celkov\u00e9 n\u00e1klady na vlastnictv\u00ed (TCO)<\/strong>.<\/p>

Matematika \"sni\u017eov\u00e1n\u00ed ratingu\"<\/strong><\/h3>

U syst\u00e9mu LFP v chladn\u00e9m podneb\u00ed mus\u00ed konstrukt\u00e9\u0159i syst\u00e9m \"p\u0159edimenzovat\". Aby v zim\u011b z\u00edskali 50 Ah pou\u017eiteln\u00e9ho v\u00fdkonu, koup\u00ed baterii LFP o kapacit\u011b 100 Ah. Pro nab\u00edjen\u00ed t\u00e9to baterie a provoz topen\u00ed si koup\u00ed 200W sol\u00e1rn\u00ed baterii.<\/p>

U sod\u00edkov\u00fdch iont\u016f nemus\u00edte sni\u017eovat nap\u011bt\u00ed tak agresivn\u011b. M\u016f\u017eete pou\u017e\u00edt 60Ah sod\u00edkov\u00fd bal\u00ed\u010dek a 80W panel, abyste dos\u00e1hli stejn\u00e9 spolehlivosti. U\u0161et\u0159\u00edte pen\u00edze za panel, mont\u00e1\u017en\u00ed hardware, p\u0159epravn\u00ed hmotnost a kabel\u00e1\u017e. Baterie m\u016f\u017ee st\u00e1t o p\u00e1r dolar\u016f v\u00edce, ale... syst\u00e9m<\/em> stoj\u00ed m\u00e9n\u011b.<\/p>

Srovn\u00e1n\u00ed: LFP (LiFePO4) vs sod\u00edko-iontov\u00e9 (Na-iontov\u00e9) n\u00edzkoteplotn\u00ed specifikace<\/strong><\/h2>

Zde je stru\u010dn\u00fd pr\u016fvodce pro v\u00e1\u0161 t\u00fdm in\u017een\u00fdr\u016f:<\/p>

Metrick\u00e9<\/th>LFP (LiFePO4)<\/th>Sod\u00edkov\u00e9 ionty (Na-ionty)<\/th><\/tr><\/thead>
Min. Bezpe\u010dn\u00e1 teplota nab\u00edjen\u00ed<\/strong><\/td>0\u00b0C<\/td>-20 \u00b0C a\u017e -40 \u00b0C<\/strong><\/td><\/tr>
Kapacita p\u0159i -20 \u00b0C<\/strong><\/td>~50-60%<\/td>~85-90%<\/strong><\/td><\/tr>
Pot\u0159ebujete vyh\u0159\u00edvac\u00ed podlo\u017eku?<\/strong><\/td>Ano (povinn\u00e9)<\/strong><\/td>Ne<\/strong><\/td><\/tr>
Stabilita nap\u011bt\u00ed (za studena)<\/strong><\/td>\u0160patn\u00fd (vysok\u00fd Sag)<\/td>Vynikaj\u00edc\u00ed<\/strong><\/td><\/tr>
Hustota energie<\/strong><\/td>Vysok\u00e1 (kompaktn\u00ed)<\/td>St\u0159edn\u011b t\u011b\u017ek\u00fd (objemn\u011bj\u0161\u00ed)<\/td><\/tr>
Nejlep\u0161\u00ed pro<\/strong><\/td>Letn\u00ed\/temper\u00e1tn\u00ed z\u00f3ny<\/td>Zimn\u00ed\/arktick\u00e9\/alpsk\u00e9<\/td><\/tr><\/tbody><\/table><\/figure>

Pr\u016fvodce kupuj\u00edc\u00edho: Konfigurace sod\u00edkov\u00e9ho syst\u00e9mu<\/strong><\/h2>

P\u0159ipraveno k testov\u00e1n\u00ed Sod\u00edkov\u00e9 iontov\u00e9 baterie<\/a><\/strong> pro va\u0161e dal\u0161\u00ed nasazen\u00ed? M\u011bjte na pam\u011bti tyto dva tipy, abyste se vyhnuli probl\u00e9m\u016fm s integrac\u00ed.<\/p>

V\u00fdb\u011br spr\u00e1vn\u00e9ho regul\u00e1toru MPPT<\/strong><\/h3>

Sod\u00edkov\u00e9 ionty maj\u00ed jinou nap\u011b\u0165ovou k\u0159ivku ne\u017e LFP. Standardn\u00ed 12V sod\u00edkov\u00e9 sady maj\u00ed \u010dasto jmenovit\u00e9 nap\u011bt\u00ed zhruba 12.4V<\/strong> (3,1 V na \u010dl\u00e1nek), zat\u00edmco LFP je 12.8V<\/strong> (3,2 V na \u010dl\u00e1nek).<\/p>

Pokud pou\u017eijete standardn\u00ed nastaven\u00ed \"LiFePO4\" na sol\u00e1rn\u00edm regul\u00e1toru nab\u00edjen\u00ed, mohlo by doj\u00edt k p\u0159ebit\u00ed sod\u00edkov\u00e9 sady. Ujist\u011bte se, \u017ee v\u00e1\u0161 regul\u00e1tor MPPT m\u00e1 \"Definov\u00e1no u\u017eivatelem\"<\/strong> kde m\u016f\u017eete ru\u010dn\u011b nastavit nap\u011bt\u00ed bulk a float, nebo se pod\u00edvejte po nov\u011bj\u0161\u00edch regul\u00e1torech, kter\u00e9 v\u00fdslovn\u011b uv\u00e1d\u011bj\u00ed podporu \"Sodium\/Na-ion\".<\/p>

Hodnocen\u00ed IP pro zimu<\/strong><\/h3>

Chemie baterie funguje i v chladu, ale funguje va\u0161e sk\u0159\u00ed\u0148? V zim\u011b doch\u00e1z\u00ed ke kondenzaci a t\u00e1n\u00ed sn\u011bhu. I kdy\u017e je baterie robustn\u00ed, ujist\u011bte se, \u017ee je va\u0161e balen\u00ed ut\u011bsn\u011bn\u00e9, aby Normy IP67<\/strong>. Vid\u011bli jsme, \u017ee perfektn\u00ed sod\u00edkov\u00e9 baterie selhaly, proto\u017ee na svorky BMS uvnit\u0159 levn\u00e9ho krytu IP54 kapala voda.<\/p>

Z\u00e1v\u011br<\/strong><\/h2>

V p\u0159\u00edpad\u011b venkovn\u00edch monitorovac\u00edch a pr\u016fmyslov\u00fdch za\u0159\u00edzen\u00ed nejde o maxim\u00e1ln\u00ed kapacitu, ale o to, aby se nep\u0159etr\u017eit\u00e1 dostupnost<\/strong>. Je irelevantn\u00ed, zda baterie LFP udr\u017e\u00ed v\u00edce energie v \u010dervenci, pokud se odm\u00edt\u00e1 nab\u00edjet v lednu. Sod\u00edko-iontov\u00e1 technologie vysp\u011bla natolik, \u017ee je nejlogi\u010dt\u011bj\u0161\u00ed volbou pro vysokohorsk\u00e9 a vysokohorsk\u00e9 aplikace. Odstra\u0148uje slo\u017eitost topn\u00fdch syst\u00e9m\u016f, udr\u017euje stabiln\u00ed nap\u011bt\u00ed p\u0159i v\u00fdkyvech v dod\u00e1vk\u00e1ch energie a zaji\u0161\u0165uje, \u017ee kdy\u017e za mraziv\u00e9ho r\u00e1na vyjde slunce, v\u00e1\u0161 syst\u00e9m se skute\u010dn\u011b nabije. Nedovolte, aby chlad ohrozil integritu va\u0161ich dat.<\/p>

P\u0159esta\u0148te bojovat se zimou pomoc\u00ed topen\u00ed a p\u0159edimenzovan\u00fdch panel\u016f.\u00a0Kontaktujte n\u00e1s<\/a><\/strong> vylep\u0161it sv\u00e9 monitorovac\u00ed za\u0159\u00edzen\u00ed pomoc\u00ed na\u0161eho Kamada Power Sodium-Ion Battery<\/a><\/strong> a zajist\u011bte si nep\u0159etr\u017eitou provozuschopnost bez ohledu na po\u010das\u00ed.<\/p>

\u010cASTO KLADEN\u00c9 DOTAZY<\/strong><\/h2>

Mohu nab\u00edjet sod\u00edkov\u00e9 baterie b\u011b\u017enou olov\u011bnou nab\u00edje\u010dkou?<\/strong><\/h3>

Obecn\u011b ano, ale s opatrnost\u00ed. Nab\u00edjec\u00ed profily sod\u00edkov\u00fdch akumul\u00e1tor\u016f jsou p\u0159ekvapiv\u011b podobn\u00e9 profil\u016fm olov\u011bn\u00fdch akumul\u00e1tor\u016f (k\u0159ivky CC\/CV). Mus\u00edte v\u0161ak zkontrolovat mezn\u00ed hodnoty nap\u011bt\u00ed. Pokud m\u00e1 olov\u011bn\u00e1 nab\u00edje\u010dka re\u017eim \"desulfatace\" nebo \"vyrovn\u00e1v\u00e1n\u00ed\", kter\u00fd zp\u016fsobuje vysok\u00e9 nap\u011b\u0165ov\u00e9 \u0161pi\u010dky (nad 15 V u 12V syst\u00e9mu), mohlo by doj\u00edt k po\u0161kozen\u00ed sod\u00edkov\u00e9 BMS. V\u017edy pou\u017e\u00edvejte nab\u00edje\u010dku, u kter\u00e9 m\u016f\u017eete vyrovn\u00e1v\u00e1n\u00ed vypnout.<\/p>

Je t\u0159eba sod\u00edkovo-iontovou baterii izolovat?<\/strong><\/h3>

Zat\u00edmco vy ne pot\u0159ebujete<\/em> vyh\u0159\u00edvac\u00ed podlo\u017eka, z\u00e1kladn\u00ed izolace (nap\u0159. p\u011bnov\u00e1 v\u00fdstelka v krabici) je st\u00e1le dobr\u00fd n\u00e1pad. Pom\u00e1h\u00e1 zadr\u017eovat teplo vznikaj\u00edc\u00ed p\u0159i vlastn\u00edm provozu baterie a udr\u017euje co nejni\u017e\u0161\u00ed vnit\u0159n\u00ed odpor. Na rozd\u00edl od LFP v\u0161ak nen\u00ed aktivn\u00ed oh\u0159ev vy\u017eadov\u00e1n z hlediska bezpe\u010dnosti nebo nab\u00edjen\u00ed.<\/p>

Jak\u00e1 je nejni\u017e\u0161\u00ed teplota pro sod\u00edkov\u00e9 baterie?<\/strong><\/h3>

V\u011bt\u0161ina komer\u010dn\u00edch sod\u00edkov\u00fdch \u010dl\u00e1nk\u016f je dimenzov\u00e1na na vyb\u00edjen\u00ed a\u017e do hodnoty -40 \u00b0C<\/strong>. Nab\u00edjen\u00ed je obvykle bezpe\u010dn\u00e9 a\u017e do -20\u00b0C<\/strong> nebo -30\u00b0C<\/strong> v z\u00e1vislosti na konkr\u00e9tn\u00edm v\u00fdrobci \u010dl\u00e1nk\u016f. V\u017edy se pod\u00edvejte na konkr\u00e9tn\u00ed datasheet pro v\u00e1\u0161 bal\u00ed\u010dek, ale o\u010dek\u00e1vejte v\u00fdkon v\u00fdrazn\u011b vy\u0161\u0161\u00ed ne\u017e u lithiov\u00fdch \u010dl\u00e1nk\u016f.<\/p>

Co kdy\u017e omylem sm\u00edch\u00e1m sod\u00edkov\u00e9 a LFP baterie v bance?<\/strong><\/h3>

Ned\u011blejte to.<\/strong> Maj\u00ed r\u016fzn\u00e9 vyb\u00edjec\u00ed k\u0159ivky a jmenovit\u00e1 nap\u011bt\u00ed. Jejich paraleln\u00ed zapojen\u00ed zp\u016fsob\u00ed, \u017ee proud z baterie s vy\u0161\u0161\u00edm nap\u011bt\u00edm bude p\u0159ech\u00e1zet do baterie s ni\u017e\u0161\u00edm nap\u011bt\u00edm, co\u017e m\u016f\u017ee zp\u016fsobit vypnut\u00ed BMS nebo ohro\u017een\u00ed bezpe\u010dnosti. V\u017edy udr\u017eujte chemick\u00e9 slo\u017een\u00ed bateri\u00ed odd\u011blen\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"

V\u00fdkon p\u0159i n\u00edzk\u00fdch teplot\u00e1ch: Ionty sod\u00edku vs. LFP pro venkovn\u00ed monitorovac\u00ed za\u0159\u00edzen\u00ed. Je to zn\u00e1m\u00fd p\u0159\u00edb\u011bh pro pracovn\u00edky ve\u0159ejn\u00fdch zak\u00e1zek: va\u0161e syst\u00e9my LFP nap\u00e1jen\u00e9 sol\u00e1rn\u00edmi \u010dl\u00e1nky funguj\u00ed bezchybn\u011b v \u010dervenci, ale kdy\u017e ude\u0159\u00ed prvn\u00ed zimn\u00ed mrazy, p\u0159estanou fungovat. Nehroz\u00ed v\u00e1m porucha za\u0159\u00edzen\u00ed; bojujete s tvrd\u00fdm \"limitem nab\u00edjen\u00ed za studena\" standardn\u00edho lithia, kter\u00e9 fyzicky nem\u016f\u017ee p\u0159ijmout...<\/p>","protected":false},"author":1,"featured_media":1181,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[19,26],"tags":[],"class_list":["post-4993","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news_catalog","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/4993","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/comments?post=4993"}],"version-history":[{"count":1,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/4993\/revisions"}],"predecessor-version":[{"id":4994,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/posts\/4993\/revisions\/4994"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/media\/1181"}],"wp:attachment":[{"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/media?parent=4993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/categories?post=4993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kmdpower.com\/cs\/wp-json\/wp\/v2\/tags?post=4993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}