Mu 2025, zochitika zoposa 68% za mabatire amagetsi okhala ndi mawilo awiri zinayambitsidwa ndi Battery Management Systems (BMS) yomwe inawonongeka, malinga ndi deta ya International Electrotechnical Commission. Ma circuitry ofunikira awa amayang'anira maselo a lithiamu nthawi 200 pa sekondi, akuchita ntchito zitatu zosunga moyo:
1. Voltage Sentinel
• Kulowetsa mphamvu zambiri: Kumachepetsa mphamvu pa >4.25V/selo (monga, 54.6V ya ma paketi a 48V) kuteteza kuwonongeka kwa ma electrolyte
• Kupulumutsa Mphamvu Yopanda Mphamvu: Kumakakamiza kugona pa <2.8V/selo (monga, <33.6V pamakina a 48V) kupewa kuwonongeka kosatha
2. Kulamulira kwa Mphamvu
| Zochitika Zoopsa | Nthawi Yoyankha ya BMS | Zotsatira Zaletsedwa |
|---|---|---|
| Kukwera mapiri mopitirira muyeso | Malire a pano kufika pa 15A mu 50ms | Kutopa kwa olamulira |
| Chochitika chafupikitsa | Kupuma kwa dera mu masekondi 0.02 | Kuthamanga kwa kutentha kwa maselo |
3. Kuyang'anira Kutentha Mwanzeru
- 65°C: Kuchepetsa mphamvu kumaletsa kuwira kwa electrolyte
- <-20°C: Imatenthetsa maselo asanayikidwe kuti apewe kuyika kwa lithiamu
Mfundo Yoyang'ana Katatu
① Chiwerengero cha MOSFET: ≥6 MOSFET yofanana imagwira ntchito yotulutsa 30A+
② Kulinganiza Mphamvu: >80mA kumachepetsa kusiyana kwa mphamvu ya maselo
③ BMS imapirira kulowa kwa madzi
Kupewa Kofunika Kwambiri
① Musamayike ndalama pa bolodi la BMS lomwe lili ndi ma board owonekera (ngozi ya moto imawonjezeka ndi 400%)
② Pewani kunyalanyaza malire amagetsi ("waya wamkuwa" umachotsa chitetezo chonse)
"Kusiyana kwa mavoteji opitilira 0.2V pakati pa maselo kukuwonetsa kulephera kwa BMS," akuchenjeza Dr. Emma Richardson, wofufuza za chitetezo cha EV ku UL Solutions. Kuyang'ana mavoteji pamwezi pogwiritsa ntchito ma multimeter kumatha kuwonjezera nthawi ya moyo wa paketi ndi katatu.
Nthawi yotumizira: Ogasiti-16-2025
