Technology txhais
Tsawg-Voltage Residential BESS (≤ 60 V)
Ib qho kev faib tawm uas 40-60 V roj teeb modules sib npaug ntawm qib txee. Ib qho kev sib cais DC-DC theem nyob rau hauv lub hybrid inverter boosts lub roj teeb voltage mus rau lub internal DC-bus, qhov twg nws yog ua ke nrog PV zog ua ntej inversion.
High-Voltage Residential BESS (85-600V)
Lub centralised, series-stacked architecture: ntau lub modules txuas nrog hauv series los tsim 85-600 V roj teeb hlua. Lub thawv tswj hluav taws xob siab (kev sib xyaw fuses, contactors, pre-charge thiab cais tawm) pub cov hlua ncaj qha rau hauv inverter's DC-bus los ntawm puck / boost regulator.
Kev sib piv
Tsawg-voltage
Pros
- Extra-low-voltage (ELV) kev ruaj ntseg tswj; tsawg kawg touch-risk
- Modular, plug-thiab-ua si installation; qis dua CapEx rau cov tsev neeg tsis muaj nyiaj txiag
- Simplified parallel BMS algorithms
Cons
- Kev poob siab dua (I²R) → 3-5% lub zog nplua
- Tsawg zog tawm; tsis tsim nyog rau> 3 kW sustained loads
- Lub peev xwm mus sij hawm ntev drift hla cov kab sib txuas ua kom nce kev txij nkawm
High-Voltage
Pros
- Txog li 96% kev ua haujlwm ib puag ncig (RTE) ua tsaug rau qhov qis qis thiab txo qis thermal load
- Nruam 5-10 kW tso zis; txhawb HVAC, cua sov-tswj lossis instant-dej-heater surges
- Cov kab me me hla ntu → sib dua, ntau cov hlua khi hlua khi thiab inverter sib nqus
Cons
- Yuav tsum tau ntawv pov thawj HV kws kho mob; IEC 63056 / UL 9540A kev ntsuas hluav taws
- Lub zog ntawm tes-theem voltage thiab kub sib txuam; advanced BMS nrog active balancing
- Tus nqi siab dua (roj teeb + HV kev nyab xeeb iav)
Daim ntawv thov Scenario
Tsawg-voltage
- Cov tsev me me / cov tsev hnub so nrog <10 kWh txhua hnub thiab tsis muaj cov khoom siv siab
- Kev tsav tsheb lossis cov khoom xauj tsev uas tshem tawm sai npaum li qhov ua tau zoo tshaj plaws
High-Voltage
- Lub tsev nruab nrab-rau-loj ib tsev neeg tsom ntawm> 90% lub zog siv tus kheej
- Yav tom ntej-proofing rau V2H / thaub qab generator kev koom ua ke lossis 15 kWh-30 kWh expansion pob
Tus Nqi Them Nqi Cia (LCOS)
Tsawg-voltage
CAPEX qis dua, tab sis 5% -8% ntxiv zog poob rau ib lub voj voog thiab kev hloov pauv ntawm tes ua ntej tuaj yeem nce 10-xyoo LCOS los ntawm 12-15% piv rau HV.
High-Voltage
20–30 % CAPEX premium offset los ntawm> 90 % RTE thiab 8 000–10 000 lub neej voj voog; tawg-txawm tias feem ntau ua tiav xyoo 5-6 nyob rau hauv German lossis California TOU tariffs.
Kev Nyab Xeeb & Kev Ua Raws Cai
Tsawg-voltage
Poob hauv SELV (Kev Nyab Xeeb Ntxiv-Low Voltage); tsis tas yuav tsum tau arc-fault disconnection; DIY-phooj ywg nyob rau hauv ntau txoj cai.
High-Voltage
Yuav tsum ua kom tau raws li IEC 62109-1/2, UL 1973 thiab cov lej HV hauv zos; Yuav tsum tau saib xyuas kev tiv thaiv hluav taws xob, arc-fault circuit interruption (AFCI) thiab kaw cov txheej txheem <5 s tom qab kuaj pom qhov txhaum.
Xaus:
Xaiv qhov tsawg-voltage thaum peev yog nruj, loads yog lub teeb thiab ceev ntawm nruab yog qhov tseem ceeb. Qhia txog high-voltage thaum koj xav tau kev ua haujlwm siab tshaj plaws, lub zog siab tam sim ntawd thiab tus nqi qis tshaj lub neej ib kWh. Txawm li cas los xij, phim cov qauv tsim rau cov ntaub ntawv thauj khoom - tsis yog lwm txoj hauv kev - thiab hais kom muaj kev sib koom ua ke los qhib tag nrho cov nqi lav ntawm koj lub tsev BESS.
