Kumvetsetsa kusiyana pakati pa kukana kwamkati ndi kulepheretsa ndikofunikira kwa aliyense wogwira ntchito ndi mabatire a UPS, machitidwe a BMS, kapena zamagetsi zamagetsi. Ngakhale amagwiritsidwa ntchito mosinthasintha, amayimira magetsi osiyanasiyana - imodzi ya mabwalo a DC, ina ya AC. Bukhuli limapereka kufananitsa komveka bwino, kwaukadaulo ndi zotsatira zake pakuwunika kwa batri.
Kukaniza kwamkati ndiko kutsutsana ndi kuyenda kwamakono mkati mwa batri pamene magetsi olunjika (DC) amagwiritsidwa ntchito. Zimachokera ku kukana kwa electrolyte, ma electrodes, ndi maulumikizidwe amkati. Kukana kwamkati ndi nambala yeniyeni (mwachitsanzo, 5.3 mΩ) ndipo sisintha ndi mafupipafupi. Ndi chimodzi mwa zizindikiro zofunika kwambiri za thanzi la batri - kuwonjezeka kwa kukana kwa mkati nthawi zambiri kumawonetsa sulfation, grid corrosion, kapena kutaya mphamvu.
Impedance ndiye kutsutsa kwathunthu kwa alternating current (AC) mudera. Zimaphatikizapo kukana (gawo lenileni) ndi kuyankha (gawo longoyerekeza, kuchokera ku mphamvu ndi inductance). Impedance imadalira pafupipafupi ndipo imawonetsedwa ngati nambala yovuta (R + jX). Pakuwunika kwa batri, miyeso ya AC impedance imagwiritsidwa ntchito kuyesa mawonekedwe amkati popanda kutulutsa batire.
Gulu 1: Kusiyana kwakukulu pakati pa kukana kwamkati (DC) ndi impedance (AC) muukadaulo wamagetsi.
| Mbali ya Electrical Property | Internal Resistance (R) | Impedance (Z) |
|---|---|---|
| Circuit Application | Amagwiritsidwa ntchito makamaka m'mabwalo omwe akugwira ntchito pa Direct current (DC). | Amagwiritsidwa ntchito kwambiri m'mabwalo opangira ma alternating current (AC). |
| Kukhalapo Kwa Dera | Zowoneka m'mabwalo osintha apano (AC) ndi Direct current (DC). | Kupatula ma circuit alternating current (AC), osapezeka mu DC. |
| Chiyambi | Amachokera ku zinthu zomwe zimalepheretsa kuyenda kwa magetsi. | Zimachokera kuzinthu zosakanikirana zomwe zimatsutsa ndikuchitapo kanthu pamagetsi. |
| Kufotokozera Nambala | Amawonetsedwa pogwiritsa ntchito manambala enieni, mwachitsanzo, 5.3 mΩ. | Kuwonetsedwa kudzera mu manambala enieni ndi zigawo zongoyerekeza, zowonetsedwa ndi R + jX. |
| Kudalira pafupipafupi | Mtengo wake umakhalabe wokhazikika mosasamala kanthu za ma frequency a DC pano. | Mtengo wake umasinthasintha ndikusintha pafupipafupi kwa AC pano. |
| Khalidwe la Gawo | Simawonetsa gawo lililonse kapena kukula kwake. | Amadziwika ndi mbali yotsimikizika ya gawo ndi kukula kwake. |
| Khalidwe mu Electromagnetic Field | Imawonetsa kokha kutha kwa mphamvu ikawonetsedwa pagawo lamagetsi. | Imawonetsa kutha kwa mphamvu komanso kuthekera kosunga mphamvu pagawo lamagetsi. |
M'machitidwe amakono a Battery Management Systems (BMS), kukana kwamkati ndi kulepheretsa kumayang'aniridwa kuti apange chithunzi chonse cha thanzi la batri. Kukwera kukana kwamkati ndi chenjezo loyambirira lakuwonongeka, pomwe mawonekedwe a impedance amatha kuwulula kusintha kwamankhwala mkati. DFUN BMS imagwiritsa ntchito njira zoyezera zolondola za AC kuti iwunikire zomwe zikuchitika mkati ndikuzindikira zolakwika zisanachitike.
BMS ya DFUN imagwiritsa ntchito ma frequency a AC pa batire iliyonse ndikuyesa kutsika kwamagetsi komwe kumabwera. Kukaniza kwamkati kumawerengedwa pogwiritsa ntchito lamulo la Ohm, ndi kulondola kwa ± 1-2%. Njirayi ndiyosasokoneza, sifunikira kutulutsa batire, ndipo imapereka chidziwitso chanthawi yeniyeni yokonzekeratu.
Internal resistance (R) ndi katundu wa DC yemwe amatsutsana ndi kayendedwe kamakono, pamene impedance (Z) ndi katundu wa AC womwe umaphatikizapo kukana ndi kukhudzidwa.
Kukwera kukana kwamkati ndi chimodzi mwazizindikiro zoyambirira za kuwonongeka kwa batri, sulfation, ndi kutaya mphamvu.
DFUN BMS imagwiritsa ntchito jakisoni wanthawi zonse wa AC poyesa kukana kwamkati ndi kulondola kwa 1-2%, popanda kusokoneza batire.
