Popanga kapena kukulitsa makina oyendetsa mabatire, funso lodziwika bwino limabuka: Kodi mapaketi awiri a batri okhala ndi mphamvu yofanana angalumikizike motsatizana? Yankho lalifupi ndiloinde, koma ndi chofunikira chofunikira:mphamvu yamagetsi yolimbana ndi chitetezo cha deraziyenera kuunika mosamala. Pansipa, tikufotokozera zaukadaulo ndi njira zodzitetezera kuti zitsimikizire kuti ntchito yotetezeka komanso yodalirika.
Kumvetsetsa Zomwe Zilipo: Chitetezo cha Voltage Voltage Tolerance
Ma batire a Lithium amakhala ndi Protection Circuit Board (PCB) kuti ateteze kuchulukitsitsa, kutulutsa mochulukira, komanso mabwalo aafupi. Chofunikira kwambiri pa PCB iyi ndivoteji kupirira mlingo wa MOSFETs ake(ma switch amagetsi omwe amawongolera kuyenda kwapano).
Chitsanzo:
Tengani mapaketi awiri a batire a 4-cell LiFePO4 mwachitsanzo. Phukusi lililonse lili ndi mphamvu yokwanira ya 14.6V (3.65V pa selo). Ngati alumikizidwa mu mndandanda, voteji yawo yophatikizidwa imakhala29.2V. PCB yoteteza batire ya 12V nthawi zambiri imapangidwa ndi ma MOSFET ovotera35-40V. Pamenepa, mphamvu yamagetsi yonse (29.2V) imagwera mkati mwamtundu wotetezeka, zomwe zimalola mabatire kuti azigwira ntchito bwino motsatizana.
Chiwopsezo Chopitilira Malire:
Komabe, ngati mulumikiza mapaketi anayi otere motsatizana, mphamvu yonseyo imatha kupitilira 58.4V—kupitilira kulekerera kwa 35–40V kwa ma PCB wamba. Izi zimapanga ngozi yobisika:
Sayansi Yoyambitsa Ngozi
Mabatire akalumikizidwa motsatizana, ma voltages awo amawonjezera, koma mabwalo achitetezo amagwira ntchito pawokha. Nthawi zonse, mphamvu yamagetsi yophatikizidwa imathandizira katundu (mwachitsanzo, chipangizo cha 48V) popanda zovuta. Komabe, ngatibatire imodzi imayambitsa chitetezo(mwachitsanzo, chifukwa chakuchulukirachulukira kapena kuchulukirachulukira), ma MOSFET ake amachotsa paketiyo kudera.
Panthawiyi, mphamvu zonse za mabatire otsala pamndandandawu zimagwiritsidwa ntchito pa ma MOSFET otsekedwa. Mwachitsanzo, pakukhazikitsa kwa mapaketi anayi, PCB yolumikizidwa ingayang'ane pafupifupi58.4V-kupitilira muyeso wake wa 35-40V. Ma MOSFET amatha kulephera chifukwa chakuwonongeka kwa magetsi, kuyimitsa kwanthawi zonse dera lachitetezo ndikusiya batire kukhala pachiwopsezo chamtsogolo.
Mayankho a Safe Series Connections
Kuti mupewe zoopsa izi, tsatirani malangizo awa:
1.Onani Zokhudza Wopanga:
Onetsetsani nthawi zonse ngati chitetezo cha batri yanu PCB idavoteledwa pamapulogalamu angapo. Ma PCB ena amapangidwa momveka bwino kuti azigwira ma voltages apamwamba pamasinthidwe amitundu yambiri.
2.Ma PCB Apamwamba Apamwamba:
Pama projekiti omwe amafunikira mabatire angapo motsatizana (monga, zosungirako zoyendera dzuwa kapena makina a EV), sankhani mabwalo achitetezo okhala ndi ma MOSFET okwera kwambiri. Izi zitha kukonzedwa kuti zipirire mphamvu zonse za khwekhwe lanu.
3.Kapangidwe Koyenera:
Onetsetsani kuti mapaketi onse a batri pamndandandawu akugwirizana ndi kuchuluka, zaka, komanso thanzi kuti muchepetse chiopsezo choyambitsa njira zodzitetezera.
Malingaliro Omaliza
Ngakhale kulumikiza mabatire amagetsi ofanana pamndandanda ndikotheka mwaukadaulo, vuto lenileni lili pakuwonetsetsa kutichitetezo chozungulira chimatha kuthana ndi kupsinjika kwamagetsi owonjezera. Pakuyika zofunikira pazigawo ndi kapangidwe kake, mutha kukulitsa mosamala makina anu a batri kuti agwiritse ntchito ma voltage apamwamba.
Ku DALY, timaperekamakonda PCB mayankhookhala ndi ma MOSFET apamwamba kwambiri kuti akwaniritse zosowa zapamwamba zolumikizira. Lumikizanani ndi gulu lathu kuti mupange njira yotetezeka, yodalirika yamagetsi yama projekiti anu!
Nthawi yotumiza: May-22-2025
