March 27, 2022
Base station lead-acid string bi tra ase wɔ float standby so, ɛtra apɔwmuden wɔ equalize charging so na ɛkura site no kɔ soro denam capacity design so. Nneɛma abiɛsa a ɛho hia wɔ nhyehyɛe mu no ni — ne sɛnea ɔyɛfo a ɔwɔ BMS a wɔasisi mu ne ɔhyew sohwɛ ma ahotoso ne ɔsom nkwa bom kɔ soro.
Afuw mu nhwehwɛmu a wɔtaa hu ne sɛ ahama bi hweree tumi efisɛ na wɔtaa yi fi mu dodo. Data no taa twe adwene si baabi foforo: nsu a ɛyera ne sulfation wɔ bere tenten float ase. Sɛ float voltage no tra nea nea ɔyɛe no nyansahyɛ so a, electrolyte no porɔw na mframa fi mu; bere a nsu fi hɔ no, nea ɛwɔ mu no kɔ soro na mprɛte no afã horow a ɛda adi no sɛe ntɛmntɛm. Bere koro no ara mu no, bere tenten a ɛba fam-rate float nyin coarse lead sulfate crystals wɔ active ade — sulfation — a tẽẽ yi adi dwuma tumi.
Nneɛma abien no nyinaa yɛ brɛoo araa ma obiara nhu na ɛboaboa ano araa ma wontumi nsakra. Mmara bi wɔ hɔ a wɔde di dwuma kɛse wɔ adwumayɛ mu: 20mV biara a float voltage tra bo a wɔkamfo kyerɛ no so no ma nkwa nna yɛ tiaa bɛyɛ nkyem abiɛsa mu biako. Dane saa na nea ɛkyerɛ no yɛ papa — lead-acid battery a wɔhwɛ so yiye wɔ telecom adwuma mu da so ara betumi ayɛ apɔwmuden wɔ mfe anum mu. Eyi nti na asɛmmisa biako tetew wɔn a wɔde nneɛma ma pa fi wɔn a aka no mu bere a wɔreyɛ mfiridwuma mu nhwehwɛmu no: so BMS no tu mmirika fixed parameters, anaasɛ ɛsakra charge strategy fi SOC ne SOH a wɔasusuw no mu?
Equalize charging nyɛ charge a wobɛbɔ bere tenten kɛkɛ. N’atirimpɔw ne sɛ ebesiesie nneɛma a enhyia wɔ nkwammoaa ntam. Kɔbere-acid hama yɛ nkɔnsɔnkɔnsɔn a ɛtoatoa so, na adwinnan mu abodwokyɛre ahorow a wɔde ka ho ne ɔhyew a ɛwɔ kabinet no mu no ma nkwammoaa biara nya ahoɔden ne emu ahoɔden a ɛsono kakra. Float charging nsiesie saa ntrɛwmu no — ɛtrɛw mu. Nkwammoaa a ɛka akyi no di akyi kɛse, na hama no nyinaa kowie sɛ ne nkwammoaa a enye koraa no anohyeto. Equalize ma charging voltage no kɔ soro bere tiaa bi enti wɔpia cell biara twa threshold koro no ara ho, afei ɛsan kɔ float bere a wɔato spread no mu pɛn no.
Adeyɛ a eye ne sɛ wobɛkanyan equalize wɔ ɔman so, na ɛnyɛ kalenda so. Battery yɛfo a FangService gyina n’akyi no yɛ BMS a nyansa wom wɔ nhyehyɛe a ɛhwɛ SOC ne SOH so wɔ cell biara mu no mu; bere a nkwammoaa biako kɔ akyiri sen nea wɔahyɛ ato hɔ a ɛtwe ne ho fi ahama no mu nkyekyem ho, anaasɛ bere a SOH nyinaa kɔ fam no, equalize nhyehyɛe no tu mmirika ankasa na afei ɛsan hwe ase kɔ float. Eyi kwati nwura abien no nyinaa a wɔtaa de di dwuma: anifuraefo bere ne bere mu pɛyɛ a ɛma nsu pii hwere, ne sɛ ɛnyɛ pɛ bere a nkwammoaa bi redi akyi ankasa no. Temperature compensation yɛ adwuma wɔ nnyinasosɛm koro no ara so — brɛ float voltage ase wɔ awɔw bere mu, ma so wɔ awɔw bere mu — ma drying ne sulfation kɔ so yɛ low-rate band afe mũ no nyinaa.
So wubetumi de 200Ah datasheet adi dwuma tẽẽ? Ɛnyɛ mfiridwuma mu. Nsakrae abiɛsa gyina din krataa ne tumi a wotumi de di dwuma ntam. Nea edi kan ne discharge rate: lead-acid tumi so tew bere a discharge current kɔ soro no, na amp-hours a wɔde ma wɔ nnɔnhwerew abien rate no yɛ soronko kɛse wɔ nnɔnhwerew du rate no ho. Ɛsɛ sɛ wɔkenkan bere tenten a wɔde bɛkora so no fi curve no so wɔ discharge rate ankasa so, ɛnsɛ sɛ wobu ho akontaa sɛ nameplate tumi a wɔde nnɔnhwerew abɔ ho. Nea ɛto so abien ne ɔhyew: digrii Celsius 25 ne nea wɔde gyina hɔ ma, na abɔnten so kabinet wɔ awɔw bere mu betumi atra boro 45, a asotwe a wotumi hu wɔ tumi a ɛwɔ mu. Nea ɛto so abiɛsa ne nkwa awiei a wɔkora so — nhyehyɛe ho adeyɛ taa hwehwɛ sɛ ahama no da so ara kura anyɛ yiye koraa no ɔha biara mu aduɔwɔtwe a wɔahyɛ no tumi wɔ nhyehyɛe nkwa nna awiei.
Mfomso a wɔtaa di ne sɛ wɔde sizing ma mprempren adesoa nkutoo na wɔn werɛ fi ntrɛwmu. Sɛ wode 5G AAUs ne infill sectors ka ho a, akyiri yi ɛma site load no kɔ soro; sɛ na backup bere tenten no kɛse kodu anohyeto a ɛwɔ da a edi kan no a, ɛsɛ sɛ wɔsesa ahama no nyinaa wɔ nkɔso a edi kan no akyi. Nsusuwii a nyansa wom gyaw ɔha biara mu aduonu kosi aduasa tumi margin enti bere nyinaa discharge no tra battery no efficient region no mu. Ɔyɛfoɔ a FangService gyina n’akyi no de antweri a ɛdi mũ a ɛfiri 50Ah kɔsi 200Ah ma, enti adetɔfoɔ bɛtumi atoto tumi mu atia nnɛyi adesoa berɛ a ɔde parallel redundancy asie ama phase-two ntrɛmu.
Sɛ afuw mu nhyehyɛe ahorow a ɛwɔ akyi no kura nkutoo a, charge strategy a eye sen biara mpo yɛ adwuma. Nhyehyɛe a ɛyɛ adwuma ne dapɛn dapɛn, ɔsram biara ne asram abiɛsa biara din. Dapɛn biara: hwɛ ahama voltage, per-cell trɛw ne emu resistance trends wɔ monitoring platform — a trɛw trɛw yɛ mfitiase sɛnkyerɛnne a ɛkyerɛ sulfation anaasɛ lagging cell. Ɔsram biara: si so dua sɛ wɔayɛ nsakrae wɔ float voltage setpoint no mu ama bere no, na hwɛ inter-cell connectors no mu sɛ ebia corrosion anaasɛ loosening, efisɛ contact resistance a ɛkɔ soro no wia voltage komm fi string no nyinaa mu. Quarterly: yɛ capacity check discharge, anaa fa BMS SOH akontabuo toto trend ho, na fade rate no ho mfonini sɛdeɛ ɛbɛyɛ a steepening slope bɛkanyan intervention.
Eyinom mu biara nyɛ den; nea ɛyɛ den ne sɛ wobɛyɛ no daa wɔ mmeae ɔhaha pii. Nhyehyɛe bi a wɔde BMS ahyɛ mu no ma nneɛma a wɔhwɛ so no fã kɛse no ara yɛ adwuma, na ɛma adwumayɛfo di alarm ahorow ho dwuma sen sɛ wɔbɛkyerɛw mita ahorow. Ɔyɛfoɔ a FangService gyina n’akyi no de SOC/SOH a ɛka ho ne over-discharge, over-charge, over-current ne temperature protection to battery fã a ɛwɔ SDA10 system no so, na ne monitoring data no ne operator bi environment monitoring platform no bom tẽẽ, enti network operations center no hu battery health ma site biara. Wɔ abantenten nnwumakuw a wɔhwɛ mmeae ɔhaha pii so wɔ ɔmantam bi mu fam no, saa a wotumi hu no taa yɛ ade biako pɛ a ɛsom bo sen biara wɔ nneɛma a wɔde ahyɛ mu no nyinaa mu.
Lead-acid fade nyɛ linear, na inflection no taa ba bere a nkwammoaa bi a aka akyi fi ase hwe ase ntɛmntɛm no. Ɛfata sɛ wokyekye suban abien a ne bo nyɛ den: kyerɛw nkwammoaa biara mu ahoɔden a ɛkɔ soro fi charge ne discharge biara mu, efisɛ drift a ɛwɔ cell a ɛka akyi so no da adi kɛse wɔ curve no so sen sɛ wɔkyekyem pɛpɛɛpɛ a; na hwɛ sɛ charge current a ɛkɔ soro a wontumi nkyerɛkyerɛ mu wɔ float voltage koro no ara mu, a mpɛn pii no ɛkyerɛ sɛ emu resistance akɔ soro.
Nsɛnkyerɛnne abien no mu biara nhia nnwinnade titiriw — nhwehwɛmu a wɔyɛ no daa kyere abien no nyinaa. Mmuae no yɛ mmerɛw saa ara: fa charge a ɛma ɛyɛ pɛ tu mmirika wɔ cell a aka akyi no so na hwɛ sɛ ebia ɛsan nya ahoɔden anaa; sɛ ɛnsan nsan mprenu a, fa to ntonto a wɔde besi ananmu no mu. Gyinabea no huammɔdi a ɛkɔ soro dodow no ara fi saa nsɛnkyerɛnne a edi kan no a wobu no sɛ mmere mu nsakrae a ɛfata no mu.
Ka wo project scenario ne ahwehwɛdeɛ kyerɛ yɛn, na yɛbɛma ano aduru a ɛfata no ahyia na yɛde quote ama wɔ nnɔnhwereɛ 24 ntam.
Nya Quote a Wɔde Ma KwaSDA10 series (48V, 50-200Ah, 3U-7U), kɔ so 1C high current discharge, cycle nkwa bɛyɛ mmɔho 3 sɛ batere a ɛyɛ mpapahwekwa, built-in BMS (SOC / SOH, overdischarge / overcharge / overcurrent / ɔhyew ahobammɔ) ne DC ɔhyew + ɔhyew management, wide temperature range adaptability. Mfiridwuma nkɔnsɔnkɔnsɔn a ɛde ne ho koraa fi batere nkwammoaa so kosi nhyehyɛe a wɔde ka bom so no atwam ISO9001 / ISO14001 / CE / UL / UN38.3 adansedi. Wɔabu adwumayɛbea atitiriw abien a wɔyɛ nneɛma no sɛ adwumayɛbea ahorow a nyansa wom a ɛkɔ anim wɔ ɔmantam no mu na wɔakɔ so aka BNEF Tier 1 wiase nyinaa ahoɔden a wɔkora so no ho.
Sua lead-acid battery ano aduru a wɔde yɛ nkitahodi base stations ho ade →