Dɛn ne nkɔmhyɛ a wɔde hyɛ nkɔm?- Polinovel .

Nsiesiei a wɔde hyɛ nkɔm kyerɛ sɛ wɔbɛkyere batere ho haw ansa na wɔadan ɔhaw ahorow a ne bo yɛ den. Adwene no nya tow twa ho hyia pii wɔ adetɔn mu, nanso adwuma ankasa no hwehwɛ sɛ wohwɛ voltage curves na wo ne wo BMS vendor no gye akyinnye wɔ nea enti a wɔn kɔkɔbɔ ahorow no kɔ so tow tuo anɔpa nnɔn abiɛsa no ho.

Lithium-ion nkwammoaa no nnwu mpofirim. Wɔde kɔkɔbɔ ma. Afiri no ne sɛ wubehu nea ɛsɛ sɛ wohwehwɛ.

Nkwammoaa a ɛyera no betumi afi ase ada ahoɔden a ɛba fam adi wɔ tebea koro no ara mu bere a wɔde toto n’afipamfo ho no. Ebia millivolt 20 mfiase no. Ɛnyɛ den sɛ wobɛpa sɛ worehwɛ pack-level data nkutoo. Asram abiɛsa akyi no saa kwan no yɛ millivolt 80 na seesei wowɔ thermal management headache efisɛ nkwammoaa biako reyɛ adwumaden sen nea aka no.

Internal resistance creep yɛ kɛse foforo no. Yɛtwee module bi wɔ ahohuru bere a etwaam no mu fii grid storage system a na ɛreyɛ adwuma mfe anan no mu. Ná nkwammoaa no hwɛ yiye wɔ krataa so. Na tumi no da so ara wɔ 84%. Nanso na DC mu ɔsɔretia no akɔ soro afi millihms 1.2 akodu millihms 2.8. Na saa module no reto ɔhyew agu n’afipamfo mu bere biara a nhyehyɛe no bɛyɛ wɔn ade wɔ frequency regulation call ho no.

Li-ion motion during the charge (a) and discharge (b) process.

Battery sohwɛ nhyehyɛe biara boaboa voltage, current, ne ɔhyew ano. Saa fã no yɛ mmerɛw. Nneɛma a mfaso wɔ so no fi nea wode saa data no yɛ bere kɔ so no mu.

Capacity Fade Rate ka kyerɛ wo sen tumi a ɛyɛ pɛpɛɛpɛ. Nkwammoaa a ɛso tew fi 100% kosi 94% wɔ afe biako mu na afei ɛkɔ 91% wɔ afe abien mu no yɛ wɔn ade sɛnea ɛsɛ. Nkwammoaa a ɛkura 97% asram dunan na afei ɛkɔɔ fam koduu 88% wɔ asram abiɛsa mu no wɔ biribi a enye wɔ wɔn mu. Ebia awiei koraa no, adwinnan mu sintɔ bi kyeree. Ebia na ɛyɛ noa wɔ ɔhyew asorɔkye mu bere a na HVAC nhyehyɛe no akɔ fam ama nsiesie.

Coulombic efficiency ho hia ma nkwammoaa a wɔtaa de sakre tu kwan no. Ebia grid storage systems no behu cycle 300 afe biara. An EV Fast Charging Hub betumi apia nkwammoaa akɔ 500 anaa 600. Sɛ nkwammoaa bi resan aba 99.1% wɔ nea wode ahyɛ mu no mu sen sɛ wode 99.7% bedi dwuma a, biribi regye lithium wɔ mu. mpɛn pii no SEI nyin. Ɛtɔ mmere bi a, lithium plating sɛ pack no nya charge wɔ awɔw bere mu a wɔanhyɛ da antra ase yiye a.

Mahu sɛ batere a entumi nyɛ adwuma yiye ho asodi da so wɔ nkwammoaa bɔne ho bere a nea ɛde bae ankasa ne ɔhyew ho nhyehyɛe a enye. Kabinet bi a ɛwɔ awiabere awia mu tẽẽ. Fan a ɛma onwini a entumi nyɛ yiye na obiara anhu adapɛn abien. Intake vents a adekoradan mu mfutuma asiw ano.

Nkwammoaa mu hyew bere a wɔrebɔ charging no ho hia sen ɔhyew a atwa ho ahyia. Pack a ɛyɛ 0.5C no betumi ayɛ digrii Celsius 8 anaa 10 wɔ ambient so. Saa pack koro no ara a ɛwɔ 1C no betumi abɔ digrii 20 wɔ soro. Afei fa saa no gu kyinhyia ɔhaha pii so.

Yɛwɔ adetɔfoɔ bi a ɔwɔ Nevada a ɔrenwiinwii wɔ tumi a wɔhwere ntɛm ho wɔ wɔn afe a ɛtɔ so mmienu a wɔde yɛɛ adwuma no mu. no danee wɔn adwumayɛbea no anim a na ɛwɔ atɔe fam. Awiabere awiabere ahohuru bere mu owia maa wɔn batere dan no anafo fam awiei yɛɛ hyew koduu digrii F 95 bere a atifi fam awiei no traa ase wɔ 78℃F. Nkwammoaa a ɛwɔ ɔhyew no ano no dii mfe a ɛyɛ ntɛmntɛm no mmɔho abien. Nsiesiei a wɔde hyɛ nkɔm no maa mpaapaemu no bae, nanso na nneɛma a asɛe no ayɛ dedaw bere a obiara hwɛɛ data no aniberesɛm no.

Running electrochemical impedance spectroscopy a ɛwɔ live system so no nyɛ nea mfaso wɔ so ma adwumayɛfo dodow no ara. Adwinnade no bo yɛ sika ankasa na wuhia obi a onim sɛnea ɔbɛkyerɛ nea efi mu ba no ase.

Nea site dodow no ara yɛ mmom ne track DC resistance bere a ɛyɛ adwuma sɛnea ɛsɛ. Sua voltage sag wɔ adesoa ase. Fa toto susudua a efi commissioning ho no ho. Nkwammoaa a ɛkyerɛ 40% resistance a ɛkorɔn sen n’afipamfo no reka biribi akyerɛ wo.

BMS platform ahorow bi bu resistance no ho akontaa ankasa fi charge ne discharge events mu. Ɛsono sɛnea ɛyɛ pɛpɛɛpɛ. Mehunuu nhyehyɛeɛ a ɛde nnadewa bɔ mu wɔ 5% mu ne nhyehyɛeɛ a ɛma wo nwura ɛfiri sɛ wɔreyɛ sampling wɔ mmerɛ a ɛnteɛ mu wɔ kyinhyia no mu.

BMS operation inside the EV.

80% tebea a akwahosan aboboano no nya mpɛn pii wɔ baabiara te sɛ nea ɛbaa fam fi bepɔw bi so wɔ abo tablets so. Gyinaesi ahorow a wɔde besi ananmu ankasa yɛ basabasa.

Grid storage system a wɔrenya akatua ama capacity no betumi ayɛ swap modules wɔ 82% ɛfiri sɛ sika a wɔhwere firi output a wɔatew so no boro module no ka so. A backup power installation wɔ data center betumi ayɛ run cells down to 70% efisɛ wɔyɛ discharge mpɛn kakraa bi pɛ afe biara wɔ bere a ɛretwa mu.

Waranti ho nsɛm ma wosi gyinae pii. Nkwammoaa a wɔyɛ no dodow no ara ma kwan ma wotumi yɛ 70% anaa 80% wɔ cycle count bi mu. Sɛ wo data kyerɛ sɛ module bi bɛkɔ fam asen warranty threshold asram asia ansa na, saa nkɔmmɔbɔ a wo ne wo supplier no bɔ no yɛ anigye kɛse.

Agodifo akɛse no tɔn analytics packages a ɛhyɛ mfiri adesua ho bɔ na AI-ɛma nhumu. Ebi wɔ hɔ a, mfaso wɔ so. A lot of it is trend lines a ɛwɔ mfonini ahorow a ɛyɛ fɛ.

Nea ɛboa ankasa ne sɛ wobɛhyehyɛ abakɔsɛm mu nsɛm wɔ ɔkwan bi so a ɛma wotumi de nhyehyɛe a ɛte saa ara toto ho. Sɛ wode batere a ɛyɛ pɛ dunum yɛ adwuma na emu biako yɛ mmerɛw ntɛmntɛm sen afoforo no a, wopɛ sɛ wuhu saa. Sɛ Cell Lot 2847 a efi wo supplier mu no reda ɔhaw ahorow adi wɔ site ahorow pii so a, wopɛ sɛ wuhu saa ankasa.

Data a wɔkora so ahwehwɛde ahorow no nyɛ ade ketewaa bi. Cell-level logging wɔ biako-second intervals ma bɛyɛ 2 gigabytes wɔ megawatt biara mu-dɔnhwerew afe biara. Adwumayɛfo dodow no ara ntaa nsɔ nhwɛ sɛnea ɛbɛyɛ a nneɛma a wɔkora so ho ka bɛkɔ fam, nanso afei wopa nsɛm a esisi bere tiaa bi no.

General flowchart of the BMS.

Nsiesiei a wɔde hyɛ nkɔm no ntumi nsiesie nkwammoaa bɔne. Ɛrentumi nnyi ɔhyew a ɛsɛe ade no. Ɛrentumi nsi beae bi a wɔanhyehyɛ no yiye no ananmu.

Nea ebetumi ayɛ ne sɛ ɛbɛma woanya bere a edi kan. Module bi a anka ɛbɛdi nkogu wɔ awɔw bere mu ahwehwɛde a ɛsen biara ho dwumadi mu no di nkogu mmom wɔ nsiesie mfɛnsere a wɔayɛ ho nhyehyɛe wɔ April mu no mu. Ebia saa nsonsonoe no bɛma woagye asotwe a wode bɛma wo anaasɛ insurance ho krataa.

Sites a wonya mfaso ankasa fi predictive maintenance mu no ne nea ɛyɛ adwuma ankasa wɔ data no so. Mede dashboard ahorow a ɛyɛ fɛ a ɛkyerɛ kɔkɔbɔ ahorow nyinaa a obiara nhwɛe wɔ asram pii mu no anantew mu. Ɛno nyɛ nsiesie ho nkɔmhyɛ. Ɛno yɛ data a wɔaboaboa ano a ne bo yɛ den.