Mun ye mun ye .Platinum resistance température detecteurs?
A filɛ, n’i bɛ nin kalan, n’a sɔrɔla i bɛ funteni hakɛ dɔn kaban batiriw kɔnɔ. Nka nin ye fɛn ye mɔgɔw fanba tɛ min fɔ i ye: Ka funteni sɔrɔ ka ɲɛ, o ka gɛlɛn ka tɛmɛ a mankan kan, wa ni a kɛra cogo jugu la, o bɛna bɔ i la. Caman.
An ye nin kalan sira gɛlɛn kan san 2019. An ka Forklift Fleet kuntigi dɔ tun bɛ Sinuwa woroduguyanfan fɛ 40+ unitw tun bɛ an ka batiriw baara. Tilemana gosi, temps jigira ka -25℃, ani yɔrɔnin kelen an bɛ weleli sɔrɔ 2 AM waati. Kamiyɔnw tɛna wari sara. BMS bɛ to ka fili-waati la lasɔminiw. ka bɔ san mugan ni duuru la. Awɔ.
An tun bɛ baara kɛ ni NTC thermistors minnu ye, olu sɔrɔla ka surunya degere 8 la nɛnɛ waati la. BMS y’a miiri ko seliw bɛ ka sumaya kojugu ni u bɛ ka nɛnɛ tiɲɛ na. Chargers bɛ da tugu. Fleet kuuru salen bɛ depo kɔnɔ. Jalakiw, u falenni musakaw, bɛlɛnw ka taa yafa ɲini u yɛrɛ fɛ... an k’a fɔ dɔrɔn ko mɔgɔ dɔ bɛ an ka sosiyete la hali bi o kontra bɛ karamɔgɔya la u ka kogo kan i n’a fɔ hakilijigin. A musaka ka ca ni miliyɔn 2 ye RMB.
O waati de la an ka patɔrɔn y'a bolo sɔgɔ tiɲɛ na tabali kan k'a fɔ ko "Kabini sisan, platinum RTD bɛ fɛn bɛɛ kan, wa ni mɔgɔ dɔ ye hakilina di NTC ma tugun walasa ka wari mara, o bɛ bɔ u ka bonyali la."
So yeah. O de y'a To an bɛ nin sɛbɛn. A tɛ kɛ bawo Platinum RTDw bɛ fɛn caman kɛ. Parce que (bari) an ye jeni (ironiquement, par températures températures) ani an t’o kɛ tugun.
A jɔnjɔnw (nka nafa bɛ minnu na tiɲɛ na) .
Platinum RTD bɛ jɔ platinum resistance temperature detector kan. Sariyasen in ka nɔgɔn: Platinum wire bɛ kuran kɛlɛ ka taa a fɛ ni a bɛ ka sumaya. Aw bɛ rezisti suman, aw bɛ funteni dɔn. O de ye o ye.
Industry standard bɛ wele ko PT100, o kɔrɔ ye 100 ohms dɔrɔn ye 0℃. PT1000 fana bɛ yen (1000 ohms at 0℃) min bɛ taamasiyɛnba di i ma ka baara kɛ n’a ye, i bɛ se ka min sɔrɔ n’i ye wire runs janw sɔrɔ walima mankan sigidaw. An bɛ PT1000 Kɛ fɛn o fɛn na ni kabali janya ye mɛtɛrɛ 2 ye sisan bari an sɛgɛnna ka Tɔnɔ 0,5 degɛrɛ filiw nɔfɛ minnu Kɛra plɔmu wire resistance ye an ɲinɛna ka min musaka.
Mun na platinum kɛrɛnkɛrɛnnenya la? An ye nikɛri ni kuran kɛcogo lajɛ tiɲɛ na kabini a daminɛ na. A sɔngɔ ka dɔgɔ, sure. Nka Nickel bɛ kɛ dibi ye ka tɛmɛ degere 300 kan ani kuran oksidan bɛ a la ni i y’a lajɛ cogo jugu la. Platinum just... bɛ baara kɛ. -200℃ka +850℃, a tɛ corrode, a tɛ drift. sɛgɛn ani dannaya bɛ min na, o ye fɛn ye tigitigi i b’a fɛ min na ni i ka batiri sigilen bɛ ton 3 forklift moving palets kɔnɔ ka fɛnmarayɔrɔ dɔ lamini.
An ka injiniyɛri dɔ ka di a ye k'a fɔ ko "Platinum ka gɛlɛn bawo a bɛ lafiya" - A tɛ kɛ ni foyi ye, a tɛ a hakilina Changé, a bɛ sigi dɔrɔn ka kɛ tiɲɛ ye. An bɛna lazy ta.
u jɔcogo saba (ani minnu bɛ baara kɛ tiɲɛ na) .
A bɛ wire-Wound, coiled element, ani fin film. An bɛ miiri min na tiɲɛ na kelen-kelen bɛɛ kan, o filɛ nin ye:
Fila-Jogo don .
Lakɔli kɔrɔ sira. Platinum wire min sirilen bɛ seramiki kɔnɔna na. Super actual, super stable. Fana super expensive ani suguya fragile. An bɛ baara Kɛ ni ninnu ye kalibration reference (jatebɔ-sɛbɛn) kama wa o de bɛ o kan. A tun bɛ ni kiliyan kelen ye min tun bɛ a sinsin wire kan-Wound for her etries bawo " dɔrɔn de ka fisa." Kalo wɔɔrɔ o kɔfɛ, u tilancɛ tun jiginna bawo a ka fɛnmarayɔrɔ gɛlɛn duguma yɛrɛyɛrɛ ye wulilanw lajɔ. Sisan a bɛ baara Kɛ ni fɛnw ye minnu bɛ ɲɔgɔn Bɔ i n'a fɔ mɔgɔ tɔw bɛɛ.
Filimu finman .
Jaabi sɔngɔ gɛlɛn, fitinin, teliya. A ka ɲi kosɛbɛ mɔgɔw ka fɛnw ma walima a ka dɔgɔ-Stakes monitoring. An bɛ baara kɛ n’u ye an ka 12V/24V pake misɛnninw kan yɔrɔ min na ni fɛn dɔ ma ɲɛ, mɔgɔ si tɛ joginni sɔrɔ ani foyi tɛ tasuma minɛ. Yala an bɛna u bila 600V forklift pake kɔnɔ wa? Absolutement tɛ. Seramiki substrat ni platinum film bɛ bonya ni hakɛ wɛrɛw ye, ani funteni sɛgɛsɛgɛli ba damadɔw kɔfɛ i bɛ daminɛ ka drift ye. Marka kelen min donna jamana kɔnɔ an y’a lajɛ - sɔngɔ gɛlɛn dɔ fana - drifted 1.5℃in under san kelen. Fournisseur ye jalaki da an ka installation kan. An ye u ka QC jalaki. A kɛra cogo o cogo, an ye baara kɛ n’u ye fɛn o fɛn na, an ye baara kɛ n’u ye.
Element coilé .
Nin ye an bɛ min spec ka ɲɛsin high-voltage packs ma. Platinum bobinew bɛ sigi ka ɲɛ seramikisɛw la minnu falen bɛ mugu la, o la u bɛ se ka u bonya ani ka u sɔgɔ k’a sɔrɔ u ma degun sɔrɔ nɛgɛ la. U bɛ yɛrɛyɛrɛli Kɛ, u bɛ thermal cycling (fɔlikan) Minɛ, u tɛ ŋunan. A sɔngɔ ka bon ka tɛmɛ filimu finman kan nka an bɛ sunɔgɔ ka ɲɛ su fɛ. Lithium batiri pake feerela o feereli bɛ kɛ ni izini baarakɛminɛnw ye, o ka kan ka ninnu lajɛ kosɛbɛ.
2-Wire, 3-Wire, 4-Wire: sɔsɔli min bɛ ɲini ka an ka kulu tila .
Nin kelen in ye sɔsɔli lakikaw lase an ka biro kɔnɔ. An ka hardware lead tun b’a fɛ ka 4-wire sɔrɔ fɛn bɛɛ kan. An ka musaka injiniyɛri tun bɛ ɲini ka kɛ ni sɔgɔsɔgɔninjɛ ye min bɛ kafoɲɔgɔnya pinɛw ni kabɛl musakaw jateminɛ. U ma kuma ɲɔgɔn fɛ dɔgɔkun kelen ɲɔgɔn.
Nin ye deal ye:
2-Wire .bɛ ɲɛ ni i ka kabali ka surun ani i tɛ i janto degere tilancɛ ɲɔgɔn na yan walima yen. Filɛri yɛrɛ ka rezisti bɛ dɔ fara i ka kalan kan. Ni aw bɛ mɛtɛrɛ 10 kabɔri boli, aw bɛ se ka bɔ ni degere 1-2 ye . A man bon kosɛbɛ ni i ka BMS bɛ ka latigɛw kɛ ka da o hakɛ kan.
3-Wire .A bɛ musaka bɔ plɔmu kɛlɛli la ani o de ye izini sigicogo fanba bɛ baara kɛ ni min ye. A ka ɲi ka se 90% ma baarakɛcogo la. Nin ye an ka default ye sisan.
4-Wire .A bɛ plɔmu kɛlɛli ban pewu. An bɛ baara kɛ n’a ye seli kama-Level monitoring waati la R&D ni validation waati la, ani kiliyan o kiliyan fɛ min bɛ wari sara premium accuracy la. Fana wajibiyalen don litiyɔmu batiri oEM furakɛli suguya bɛɛ la yɔrɔ min na kiliyan bɛ u yɛrɛ ka lakana seereyaw kɛ - jatebɔlaw bɛ 4-wire yecogo kanu.
O sɔsɔli in banna tuma min na an ka hardware guy ko "Ne bɛ se ka fili fila wɛrɛw boli walima ne bɛ se k'a ɲɛfɔ kiliyan dɔ ye mun na u ka thermal runaway protection daminɛna 3℃late." An bɛ boli 4-Wire kan minnu bɛ kɛ nivo sanfɛ-voltage pakew bɛɛ ye sisan. O musaka wɛrɛ bɛ i n’a fɔ 0,3% pake sɔngɔ la. A man kan ka sunɔgɔ ka tɛmɛ.
yɔrɔ min na u bɛ u nɔrɔ (yɔrɔ nafa ka bon tiɲɛ na) .
An ye kungo kɔnɔfɛn dɔw ye ka bɔ izini batiri dilanko wɛrɛw la. Sensors zip-A sirilen bɛ yɔrɔw la minnu bɛ kɛ cogo la. Sensorw bɛ digidigi ka kɛɲɛ ni ko ye min bɛ kɛ ni fomu ye. Jateminɛ kelen min bɛ to an hakili la, an ye sensɛri sɔrɔ yɔrɔ min na, min binna pewu, wa a tun bɛ ka jɛngɛ dɔrɔn da kɔnɔ, ka fiɲɛ hakɛ kalan k’a sɔrɔ seliw bɛ tobi.
An ka sariyaw sisan:
seliw kan .
Aw bɛ ɲɔgɔn sɔrɔ tigitigi ni kɛsu ye, ka thermal paste walima 3M VHB tape (an bɛ 9888T fɛ), o kɔ aw bɛ potted over ni epoxy ye. Ɔwɔ a bɛ mɔgɔ dimi ka baara kɛ kokura. O de ye kuma ye. Ni mɔgɔ dɔ ka kan ka chisel kɛ epoxy fɛ walasa ka sensor dɔ lamaga, a bɛna miiri siɲɛ fila n’a mago bɛ a la tiɲɛ na.
seliw ni ɲɔgɔn cɛ .
A bɛ yɔrɔ funtenimaw minɛ ka bɔ seliw la minnu bɛ tiɲɛ joona ka tɛmɛ u sigiɲɔgɔnw kan. Nin cogo in na, an ye seliluw kulu dɔ sɔrɔ ka bɔ fɛn dilanbaga dɔ fɛ min kɔnɔna nafa tun bɛ - seli kelen tun bɛ baara la ka tɛmɛ degere 8 kan ka tɛmɛ a sigiɲɔgɔnw kan. Minɛna sanni ko jugu si ka kɛ, ka modulu ɲɔgɔn falen-falen, k’a nɔfɛtaama ka taa fɛn dilanyɔrɔ dɔ la, ka ban batch bɛɛ la. Sensɔrɔlan ye a yɛrɛ sara siɲɛ 10 000 ɲɔgɔn o don na.
Busbars ani ɲɔgɔndanw .
Bolo lafiyalenw bɛ sumaya. Caman. An tun bɛ pake dɔ sɔrɔ min kɔnɔ, kontaktɛri kunbaba tun tɛ girinya ka ɲɛ, wa kuranba jukɔrɔ a tun bɛ se degere 85 ma k’a sɔrɔ seliw minnu tun bɛ a kɛrɛfɛ olu tun bɛ degere 35 la . Kunnafonidila ye ŋunankan fɔ "random" fanga derating kan. Was't random at all - BMS tun ka kan ka min kɛ tigitigi. Connection (jὲɲɔgɔnya) ɲɛnabɔra, gɛlɛya tɛmɛnen. Sisan, pake kelen-kelen bɛɛ bɛ ni sensɛri ye sisan siraba kan, non-negotiable.
Coolant in/out .
Ni nɛnɛba bɛ aw la, aw ka kan k’a dɔn ni a bɛ baara kɛ tiɲɛ na. A ye sitɛmu caman ye minnu bɛ pɔnpe sa ani mɔgɔ si ma kɔlɔsi fo seliw ka funu daminɛ.
u tɛ fɛn minnu don datashets kɔnɔ .
An ye fɛn minnu kalan ni u ye u yɛrɛ sɛgɛn, olu dɔw filɛ nin ye:
Yɛrɛ-Sumaya ye tiɲɛ ye .
I bɛ kurunba min Gɛn RTD fɛ k'a Sugandi fana o b'a Sumaya. Standard ye 1mA ye PT100 la. An ye injiniyɛri fitinin dɔ sɔrɔ siɲɛ kelen min y'a crank ka 5ma bawo "Bigger Signal, Better Actual, right?" Hakɛ. Sensɔrɔlan tun bɛ ka kalan kɛ 2℃sanfɛ. 48V Golf Cart pake kɔnɔ a kɔrɔ tun ye ko fan turn turn-on dɔɔnin dɔrɔn. 400V industrie pack kɔnɔ a tun bɛna kɛ nuisance shutdowns ye. Baara kɛ ni 1ma ye. walima a ka dɔgɔn o ma PT1000.
Wire Routing Matters .
Aw bɛ RTD filiw yɔrɔ janya kuran kabɔriw la, motɛriw, inverters - fɛn o fɛn na min bɛ ka kuranba caman wuli. An bɛ baara Kɛ ni shielded twisted pair ye sisan a kɛlen kɔ ka tile saba Kɛ "mankan-yɔrɔ-ko-siginiden" dɔ la min Kɛra EMI ye ka Bɔ VFD mounted 20cm yɔrɔ la. Lithium Battery Wholesale Distributors Aw ye aw janto nin na: Ni aw bɛ pakew feere kokura ani ni integrator bɛ BMS bila motɛri ɲɛminɛbaga kɛrɛfɛ yɛrɛ, funteni kalanni bɛna kɛ nɔgɔ ye.
Tolerance class tɛ tiɲɛni ye .
B PT100 kalasi bɛ se ka faga ni ±0,8 ye degere 100 na spec kelen na. O ye fili ye min bɛ Se ka Kɛ. ni aw ka BMS y' a miiri ko a bɛ tiɲɛ ani ka funteni dan sigi degere 60 la , tiɲɛ na , aw bɛ se ka dan sigi degere 59,2 na walima 60,8 na . Aw bɛ aw ka danw dilan ni muɲuli ye aw hakili la. An bɛ so jɔ degere 2 la an ka lakanani dakunw bɛɛ kan.
Sensors sɔngɔ gɛlɛnw drift. Sensor ɲumanw tɛ .
An ye sensɛriw nɔfɛtaama ka bɔ feerelikɛlaw la minnu tɛ kelen ye san 2 foro baara la. baarakɛnafolo taw (i n' a fɔ dɔrɔmɛ 0,80 kelen kelen ) ye 0,6 degere 1 bɔ . Mid{5}}Japonanɛw ($2.50) bɛ 0,1℃drif . The Premium Swiss Ones ($8) drifted basiki foyi ma kɛ ni C'mon, $8 ye sensor kelen na? An bɛ baara Kɛ ni Zapɔnkaw ye. Nafa min ka bon kosɛbɛ izini fɛnw na.
Mun na an ye sariya sigi PT100 kan fɛn bɛɛ kan .
An tun bɛ ni ɲagami ye: NTC thermistors on low-cost packs, PT100 on premium ones, dɔw weird KTY sensors on legacy products. O tun ye sugo jugu ye. curves calibration différentes, BMS firmware branches différentes, inventory de parts de rechanges différentes.
Sisan a bɛ PT100 yɔrɔ bɛɛ. Sensɔrɔlan kelen, feerekɛla kelen, a minɛcogo kelen. Ni fɛn dɔ ma ɲɛ, an man kan ka ɲininkali kɛ ko "A jira, sensɛri suguya jumɛn bɛ nin pake in kɔnɔ?" Batiri sitɛmuw ka ɲɔgɔnfaamu bɛ nɔgɔya cogo la ni i tɛ sensɛri suguya duuru dilan.
NTC ni PT100 musaka danfara bɛ i n’a fɔ dɔrɔmɛ 1,50 sensɛri kelen na. Batiri min bɛ $3000 na, o bɛ kɛ ni dɔrɔmɛ 3000 ye, o ye mankan ye. Ka da a kan dannaya ni dɛmɛ musakaw, o ye fɛn bɛɛ ye.
mɔgɔ o mɔgɔ bɛ speccing sensors sisan .
N'i ye dilan injiniyɛri ye min bɛ nin kalan, nin ye a surun ye:
Aw bɛ PT100 walima PT1000 kɛ. Coiled element for fɛn o fɛn ka tɛmɛ 100V kan walima fɛn o fɛn bɛ yɛrɛyɛrɛ. Filimu finman ka ɲi banbali sɛgɛsɛgɛli la ani dɔgɔya{4}}Kɔlɔsili la. 3-Wire minimum, 4-wire ni i bɛ seereyaw walima tiɲɛni baara kɛ.
Sani ka bɔ sensɛri dilannikɛlaw la minnu sigilen don ni tugu-tugu-ɲɔgɔn kɔ. An ye PT100 nkalonmaw ye minnu tun ye tiɲɛ na NTCw ye ni taamasiyɛn nkalonmaw ye. Ni a sɔngɔ bɛ i ko a ka ɲi kojugu, o ye.
Pot aw ka sensorw. Baara kɛ ni thermal interface material ye. degun-Aw ka kabali lajɔ. Aw ye aw ka sensor yɔrɔw sɛbɛn walasa tekinolojikɛla faantan san 5 ka bɔ sisan a bɛ yɔrɔ dɔn.
Ani mɔgɔ o mɔgɔ bɛ sɔrɔ ka pakew sɔrɔ: Aw bɛ aw ka feerekɛla ɲininka u bɛ baara kɛ ni sensɛri minnu ye ani mun na. Ni u ma se ka jaabi tilennen di i ma, o bɛ fɛn dɔ fɔ i ye. N'u y'a fɔ ko "An bɛ platini RTDw kɛ bawo an ye sira gɛlɛn dege min bɛ kɛ ni i ma o kɛ," o ye feerekɛla ye min bɛ yen kabini waati jan walasa k'a dɔn min nafa ka bon.
An bɛ litiyɔmu batiriw kɛ a bɛ san tan ni kɔ bɔ sisan - Forklifts, Golf Carts, AGVs, Floor Scrubbers, i b’a tɔgɔ fɔ. Funteni hakɛ dɔnni bɛ se ka kɛ 0,5% ye BOM musaka la ani 50% foro dɛsɛ ju la an ye min sɔrɔ. A nafa man bon dɔrɔn ka bɔ a la.
N'i bɛ ekipu dɔ Лini min bɛ tiɲɛ na 'sèn Bɔ nin ɲɔgɔnna fɛnw na, i b'a Dɔn i bɛ Se k'an Sɔrɔ yɔrɔ min na. An bɛ nisɔndiya tuma bɛɛ ka kuma thermal management kan ni mɔgɔ o mɔgɔ ye min bɛ se kosɛbɛ a sɔrɔli la ka ɲɛ.
Wa ni aw ka kulu kɔnɔ mɔgɔ dɔ ye hakilina di ko aw ka dɔrɔmɛ 1,50 mara pake kelen na ni aw ye NTCw wuli, aw kana siga ka nin barokun in ci u ma. walima fatura min bɔra o san 2019 ko la. Fɛn o fɛn bɛ baara kɛ.
