Fɔ ɔndastand di difrɛns bitwin intanɛnt rɛsistɛns ɛn impedans rili impɔtant fɔ ɛnibɔdi we de wok wit UPS bateri, BMS sistem, ɔ pawa ilɛktroniks. Pan ɔl we dɛn kin yuz dɛn bɔku tɛm fɔ chenj dɛnsɛf, dɛn kin riprizent fondamɛnt difrɛn ilɛktrik prɔpati dɛn – wan fɔ DC sɔrkwit, di ɔda wan fɔ AC. Dis gayd de gi klia, tɛknikal kɔmpiashɔn wit prɛktikal implikashɔn fɔ bateri monitarin.
Intanɛt rɛsistɛns na di opɔzishɔn to kɔrɛnt flɔ insay batri we dɛn aplay dairekt kɔrɛnt (DC). I de kכmכt frכm di rεsistεns fכ εlektrolayt, εlektrod, εn intanεt kכnεkshכn dεm. Intanɛt rɛsistɛns na rial nɔmba (ɛgz., 5.3 mΩ) ɛn i nɔ de chenj wit frikshɔn. Na wan pan di impɔtant tin dɛn we de sho se di bateri gɛt wɛlbɔdi – we di intanɛnt rɛsistɛns go ɔp bɔku tɛm i kin sho se sɔlfeshɔn, grid kɔrɛshɔn, ɔ di kapasiti lɔs.
Impedans na di totɛl opɔzishɔn to ɔltɛnatin kɔrɛnt (AC) na wan sɛrkyut. I inklud ɔl tu di rɛsistɛns (rial pat) ɛn riaktans (imajinari pat, frɔm kapasiti ɛn induktans). Impedans na frikshɔn-dipɛndent ɛn dɛn de ɛksprɛs am as kɔmpleks nɔmba (R + jX). Insay bateri monitarin, dɛn de yuz AC impedans mɛzhɔmɛnt fɔ evaluate intanɛnt kwaliti dɛn we dɛn nɔ dischaj di bateri.
Tebul 1: Ki difrɛns bitwin intanɛnt rɛsistɛns (DC) ɛn impedans (AC) insay ilɛktrik injinɛri.
| Aspek fɔ Ilɛktrik Prɔpati | Intanɛt Rɛsistɛns (R) | Impedans (Z) . |
|---|---|---|
| Aplikeshɔn fɔ di Sakit | Yutilayz prɛshɔ insay sɔrkwit dɛn we de ɔpreshɔn pan dairekt kɔrɛnt (DC). | Predominantly employed in sirkit dɛn we dɛn mek fɔ ɔltɛnatin kɔrɛnt (AC). |
| Sakit Prɛzɛns | Observable in ɔl tu di ɔltɛn kɔrɛnt (AC) ɛn dairekt kɔrɛnt (DC) sɔrkwit. | Eksklusiv to ɔltɛn kɔrɛnt (AC) sɛrkyut, nɔ de na DC. |
| Usay i kɔmɔt | I kɔmɔt frɔm ɛlimɛnt dɛn we de ambɔg di flɔ ɔf ilɛktrik kɔrɛnt. | Aris frɔm wan kɔmbaynshɔn ɔf ɛlimɛnt dɛn we de rɛsist ɛn riak to di ilɛktrik kɔrɛnt. |
| Numɛrik Ɛksprɛshɔn | Eksprεs yuz difinitiv rial nכmba dεm, fכ egzampl, 5.3 mΩ. | εksprεs tru כl tu di rial nכmba dεm εn imajinari kכmכpכnt dεm, we dεn egzampl bay R + jX. |
| Frikyuɛnsi Dipɛnsin | I valyu de kɔntinyu fɔ de kɔnstant ilɛksɛf di frɛkuɛns na di DC kɔrɛnt. | I valyu de chenj wit di chenj we di AC kɔrɛnt de chenj. |
| Faz Karakta | Nɔ de sho ɛni faz angul ɔ magnitud atribyut. | Karakta bay ɔl tu wan difinitiv faz angul ɛn magnitud. |
| Bihayvya na wan Ilɛktromagnetik Fild | Solely de sho pawa dissipeshɔn we i de ɛkspos to ilɛktromagnetik fil. | De sho ɔl tu di pawa dissipeshɔn ɛn di kapasiti fɔ kip ɛnaji na ilɛktromagnetik fil. |
Insay di mɔdan Batri Manejmɛnt Sistɛm (BMS), dɛn de wach ɔl tu di intanɛnt rɛsistɛns ɛn impedans fɔ bil wan kɔmplit pikchɔ bɔt di bateri wɛlbɔdi. Rising intanεt rεsistεns na εli wכnin fכ dεgradashכn, we impedans spεktroskopi kin sho intanεt kεmikכl chenj dεm. DFUN BMS de yuz prɛsishɔn AC mɛzhɔmɛnt mɛtɔd fɔ trak intanɛnt rɛsistɛns tren ɛn detekt anomaly bifo dɛn lid to fayl.
DFUN in BMS de aplay fiks-frikyuɛnsi AC kɔrɛnt to ɛni bateri sɛl ɛn mɛzhɔ di vɔlɔt drɔp we de kɔmɔt frɔm am. di intanal rεsistεns dεn kכl am yuz Ohm in lכ, wit akכda ±1-2%. Dis we ya nɔ de invayv, i nɔ nid fɔ diskɔnekt di bateri, ɛn i de gi rial-taym data fɔ prɛdiktiv mentenɛns.
Intanɛt rɛsistɛns (R) na DC prɔpati we de agens kɔrɛnt flɔ, we impedans (Z) na AC prɔpati we inklud ɔl tu rɛsistɛns ɛn riaktans.
Rising internal resistance na wan pan di fɔs tin dɛm we de sho se di bateri de pwɛl, di sɔlfeshɔn, ɛn di kapasiti dɔn lɔs.
DFUN BMS de yuz fiks-frikyuɛnsi AC kɔrɛnt injɛkshɔn we fɔ mɛzhɔ intanɛnt rɛsistɛns wit 1-2% akkuracy, we nɔ de ambɔg di bateri ɔpreshɔn.
