Ukuqonda umehluko phakathi kwangaphakathi nokubambezeleka kokumelana kubalulekile kunoma ubani osebenza ngamabhethri e-UPS, amasistimu e-BMS, noma izinto zikagesi zamandla. Ngenkathi evame ukusetshenziswa ngokushintshana, amele izakhiwo zikagesi ezihluke kakhulu - eyodwa yamasekhethi e-DC, enye eye-AC. Lo mhlahlandlela unikeza ukuqhathanisa okucacile, kobuchwepheshe nemithelela engokoqobo yokuqapha ibhethri.
Ukumelana kwangaphakathi ukumelana nokugeleza kwamanje ngaphakathi kwebhethri uma kusetshenziswa i-direct current (DC). Kuvela ekuphikisweni kwe-electrolyte, ama-electrode, nokuxhumana kwangaphakathi. Ukumelana kwangaphakathi kuyinombolo yangempela (isb, 5.3 mΩ) futhi ayishintshi nemvamisa. Ingenye yezinkomba ezibaluleke kakhulu zempilo yebhethri - ukwanda kokumelana kwangaphakathi kuvame ukukhomba i-sulfation, ukugqwala kwegridi, noma ukulahlekelwa amandla.
Ukuphazamiseka ukuphikiswa okuphelele kokushintshashintsha kwamandla (AC) kusekethe. Kuhlanganisa kokubili ukumelana (ingxenye yangempela) kanye nokusabela (ingxenye ecatshangelwayo, kusuka ku-capacitance kanye ne-inductance). I-impedance incike ku-frequency futhi ivezwa njengenombolo eyinkimbinkimbi (R + jX). Ekuqaphelweni kwebhethri, izilinganiso ze-AC impedance zisetshenziselwa ukuhlola izici zangaphakathi ngaphandle kokukhipha ibhethri.
Ithebula 1: Umehluko omkhulu phakathi kokumelana kwangaphakathi (DC) kanye ne-impedance (AC) kubunjiniyela bakagesi.
| Isici | Sokumelana Kwangaphakathi Kwempahla Kagesi (R) | Impedance (Z) |
|---|---|---|
| Isicelo Sesifunda | Isetshenziswa ngokuyinhloko kumasekhethi asebenza ku-direct current (DC). | Isetshenziswa kakhulu kumasekhethi aklanyelwe ukushintshana kwamanje (AC). |
| Ubukhona Besifunda | Iyabonakala kuwo womabili amasekhethi ashintshayo wamanje (AC) kanye namanje aqondile (DC). | Ikhethekile kumasekhethi ashintshanayo wamanje (AC), awekho ku-DC. |
| Umsuka | Isuka ezintweni ezivimbela ukuhamba kwamandla kagesi. | Ivela ekuhlanganiseni kwezinto eziphikisanayo futhi ezisabela kumbane kagesi. |
| Ukuvezwa Kwezinombolo | Kuvezwe kusetshenziswa izinombolo zangempela eziqondile, isibonelo, 5.3 mΩ. | Kuvezwe ngazo zombili izinombolo zangempela nezingxenye ezicatshangwayo, eziboniswa ngu-R + jX. |
| Ukuncika Kwemvamisa | Inani layo lihlala linjalo kungakhathaliseki ukuthi imvamisa ye-DC yamanje. | Inani layo liyashintshashintsha ngokushintshashintsha kwemvamisa yamanje ye-AC. |
| Isici sesigaba | Ayibonisi noma iyiphi i-engeli yesigaba noma izibaluli zobukhulu. | Ibonakala yikho kokubili i-engeli yesigaba esiqondile nobukhulu. |
| Ukuziphatha Ensimini ye-Electromagnetic | Ibonisa kuphela ukuchithwa kwamandla lapho kuvezwe endaweni ye-electromagnetic. | Ibonisa kokubili ukuchithwa kwamandla kanye namandla okugcina amandla endaweni ye-electromagnetic. |
Kumasistimu okuphatha ibhethri yesimanje (BMS), kokubili ukumelana kwangaphakathi kanye nokungaphumeleli kuyagadwa ukuze kwakhiwe isithombe esiphelele sempilo yebhethri. Ukwenyuka kokumelana kwangaphakathi yisixwayiso sangaphambi kwesikhathi sokuwohloka, kuyilapho i-impedance spectroscopy ingadalula izinguquko zangaphakathi zamakhemikhali. I-DFUN BMS isebenzisa izindlela zokulinganisa ezinembayo ze-AC ukuze ilandelele izitayela zokumelana nangaphakathi futhi ithole okudidayo ngaphambi kokuthi kuholele ekwehlulekeni.
I-BMS ye-DFUN isebenzisa imvamisa ye-AC yamanje kuseli yebhethri ngayinye futhi ikala ukwehla kwamandla kagesi. Ukumelana kwangaphakathi kubalwa kusetshenziswa umthetho we-Ohm, ngokunemba okungu-±1-2%. Le ndlela ayihlaseli, ayidingi ukunqanyulwa kwebhethri, futhi inikeza idatha yesikhathi sangempela yokulungiswa okubikezelwayo.
Ukumelana kwangaphakathi (R) kuyimpahla ye-DC ephikisana nokugeleza kwamanje, kuyilapho i-impedance (Z) iyindawo ye-AC ehlanganisa kokubili ukumelana nokusabela.
Ukwenyuka kokungazweli kwangaphakathi kungenye yezinkomba zokuqala zokuwohloka kwebhethri, ukucwenga kanye nokulahlekelwa amandla.
I-DFUN BMS isebenzisa indlela yamanje yomjovo we-AC ye-fixed-frequency ukuze ilinganise ukumelana kwangaphakathi ngokunemba okungu-1-2%, ngaphandle kokuphazamisa ukusebenza kwebhethri.
