He pai, he huakore hoki ngā matū matua e rua o te pākahiko e whakamahia ana i roto i ngā kaupapa rokiroki pūngao rā me te pūngao hiko. Kua roa te wā e ora ana ngā pākahiko waikawa-mata, ā, he māmā ake te mārama ki ēnei engari he iti noa iho te kaha rokiroki.Pūhiko lithium-ionHe roa ake te ora huringa o ēnei, he mama ake hoki te taumaha engari he nui ake te utu.

Kotahi te momo pākahiko o ngā whakaurunga rokiroki, pērā i a LG Chem, i konei. He whakaahua nā GreenBrilliance

Ka taea te whakakotahi i ngā painga o ia matū hei hanga i tētahi pēke pākahiko iti te kaha, he iti te utu?

Me wetewete rānei te pēke pākahiko waikawa-mata hei whakamahi noa i ngā mahi a te pākahiko lithium-ion hou? Ka taea te tāpiri i ētahi pākahiko waikawa-mata iti ake te utu ki tā rātou pūnaha lithium kia tutuki ai te kaha o tētahi kilowatt-haora?

He pātai nui katoa, engari kāore i te tino mārama te whakautu: kei te āhua tonu. He māmā ake, he iti ake hoki te mōrearea o te piri ki te kotahi matū, engari he huarahi hei whakatika.

I kī a Gordon Gunn, he miihini hiko i Freedom Solar Power i Texas, tera pea ka taea te hono i ngā pākahiko mata-waikawa me ngā pākahiko lithium, engari mā te hononga AC anake.

"Kāore rawa e taea te hono i ngā pākahiko waikawa-mata me te lithium i runga i te pahi DC kotahi," tana kī. "I te pai rawa atu, ka whakangaromia ngā pākahiko, ā, i te kino rawa atu...he ahi? he pahūtanga? he pānui i te haere tonu o te wāhi-wā? Kāore au i te mōhio."

Nā K. Fred Wehmeyer, te tumuaki tuarua matua o te hangarau i te kamupene pākahiko waikawa-mata, US Battery Manufacturing Co., i whakarato ētahi atu whakamārama.

"Ka taea te hanga, engari kāore e rite ki te tāpiri noa i ngā pākahiko waikawa-mata ki te pūnaha pākahiko lithium. Ko te tikanga, ka mahi motuhake ngā pūnaha e rua," te kī a Wehmeyer. "Me whakahaere tonu te pūnaha pākahiko lithium e tana ake BMS me tana ake rihi me te kaiwhakahaere utu. Me hiahia te pūnaha pākahiko waikawa-mata ki tana ake rihi me/ranei te kaiwhakahaere utu engari kāore e hiahiatia he BMS. Tērā pea ka tukuna e ngā pūnaha e rua ngā kawenga ōrite i te wā kotahi engari me whai mana whakahaere pea kia pai ai te tohatoha i te tohatoha kawenga i waenga i ngā matū e rua."

Kāore a Troy Daniels, te kaiwhakahaere ratonga hangarau mō te kaihanga pākahiko LFP, a SimpliPhi Power, e tūtohu kia whakaranua te matū pākahiko kotahi, kaua hoki ngā matū rerekē ki roto i te pūnaha kotahi, engari e whakaae ana ia ka taea tēnei.

"Ko ētahi huarahi hei whakakotahi ko te whai i ngā pūnaha motuhake e rua (te rihi me te inverter) ka taea te tohatoha i te kawenga kotahi, te wehewehe rānei i ngā kawenga hiko e hiahiatia ana," tana kī. "Ka taea hoki te whakamahi i te pana whakawhiti; heoi, ko te tikanga o tēnei kotahi anake te huinga pākahiko, te matū rānei ka taea te utu, te tuku rānei i te wā kotahi, ā, me whakawhiti ā-ringa pea."

Ko te wehewehe i ngā kawenga me te whakatū i ngā pūnaha e rua he mahi uaua ake i tā te tini e hiahia ana kia mahia.

"Kāore anō mātou kia mahi tahi me tētahi pūnaha lithium/waikawa-mata ranu i Freedom Solar nā te mea ehara i te mea he tāpiringa iti te utu, ā, e ngana ana mātou ki te pupuri i te tāutanga o ā mātou pākahiko kia māmā noa mā te whakamahi i te matū pākahiko kotahi me te hua pākahiko kotahi," te kī a Josh Meade, PE me te kaiwhakahaere hoahoa.

Kotahi te kamupene e ngana ana ki te whakangawari ake i te whakakotahitanga o ngā matū e rua. Kei te kaihanga hua hiko kawe a Goal Zero he Teihana Hiko Kawe Yeti e hangai ana ki te lithium ka taea te whakamahi hei tautoko ā-wāhanga o te kāinga. Ko te Yeti 3000 he pākahiko lithium NMC 3-kWh, 70-lb ka taea te tautoko i ngā ara iahiko e whā. Mena e hiahiatia ana he hiko ake, ka tukuna e Goal Zero tana Yeti Link Expansion Module e taea ai te tāpiri i ngā pākahiko whakawhānui waikawa-mata. Ae, he tika tēnā: Ka taea te hono i te pākahiko Yeti lithium ki te waikawa-mata.

"He pākahiko waikawa-mata ngaro tō mātou tāke whakawhanui. Mā tēnei ka taea e koe te whakamahi i ngā hikohiko i roto i te Yeti [pūnaha lithium] engari ka whakawhanui i te pākahiko," te kī a Bill Harmon, Kaiwhakahaere Matua i Goal Zero. "Mā te 1.25-kWh ia pākahiko, ka taea e koe te tāpiri i te maha o ngā [pākahiko waikawa-mata] e hiahiatia ana e koe. Ka taea e te kiritaki te mono noa i a rātou. Kātahi ka kitea te ngāwari o te kawe o te pākahiko lithium me ngā pākahiko waikawa-mata utu iti e noho ana i te kāinga."

Ko ngā raruraru nui rawa atu i te wā e hono ana i te lithium me te waikawa mata ko ō rāua ngaohiko rerekē, ngā āhua utu me ngā rohe utu/tukunga. Mena he rite te ngaohiko o ngā pākahiko, he rerekē rānei te tere tukunga, ka tere te rere o te hiko i waenganui i a rāua. Ina tere te rere o te hiko, ka puta ake ngā raruraru whakamahana, ā, ka pā kino ki te pai o te huringa pākahiko.

Mā te Goal Zero tēnei āhuatanga e whakahaere. Ko te Yeti Link he pūnaha whakahaere pākahiko matatau e tika ana mō te pākahiko lithium Yeti taketake e whakahaere ana i ngā ngaohiko me te utu i waenga i ngā matū rerekē.

"Kei te whakahaere a Yeti Link i taua whakawhiti hiko i waenga i ngā pākahiko." te kī a Harmon. "Ka tiakina e mātou i roto i tētahi huarahi haumaru, kia kore ai te pākahiko lithium e mōhio kei te honoa ki te pākahiko waikawa-mata."

Ahakoa he iti ake te Yeti 3000 i ngā pākahiko lithium tuku iho mō te kāinga – ko te LG Chem. Ko te mana o ngā tauira Tesla me ngā sonneti he 9.8 kWh te iti rawa – engari koinā te mea e kukume ana i a ia, e ai ki a Harmon. Ā, ki te taea e tetahi te whakanui ake ki taua tohu 9-kWh me ētahi pākahiko mata iti ake te utu, me te kawe hoki i te pākahiko lithium i a rātou e puni ana, e eke ana rānei i te hiku, he aha ai?

"Ko tā mātou pūnaha he mea mō ngā tāngata katoa o te motu kāore he $15,000 hei haumi ki tētahi whakaurunga rokiroki hiko. Ā, ina oti ahau, ko tāku anake he mea kua tāutahia ki roto i tōku kāinga," te kī a Harmon. "Ko Yeti he mea mō te hunga e pāngia ana e te mea e whakapaua ana e rātou te moni. Ko tā mātou pūnaha he $3,500 katoa kua tāutahia."

Kua tae a Goal Zero ki tōna whakatupuranga tuarima o ngā hua, nō reira e māia ana ki ōna āheinga whakakotahitanga lithium-lead. Engari mō te tini ke atu kāore i te tino pai ki te whakaranu i te matū o te pākahiko, ka taea te tāuta i ngā pūnaha motuhake e rua i roto i te pakihi kotahi, i te whare kotahi rānei – mena ka whakatūria e te tohunga hiko.

"Ko tētahi huarahi māmā ake, haumaru ake hoki ki te tāpiri i te kaha rokiroki iti ake te utu ki tētahi pūnaha lithium o nāianei ko te wehewehe i ngā kawenga me te tohatoha motuhake i aua kawenga ki ngā pūnaha pākahiko e rua," te kī a Wehmeyer o te US Battery. "Ahakoa pēhea. Me mahi tēnei e tētahi tohunga whakangungu hei pupuri i te haumaru."