Yini iziIzihloli Zezinga Lokushisa ZePlatinum?
Bheka, uma ufunda lokhu, cishe usuyazi kakade izindaba zokushisa kumabhethri. Kodwa nansi into abantu abaningi abangakutsheli yona: ukuthola izinga lokushisa NGOKUQINILE kunzima kakhulu kunalokho okuzwakalayo, futhi ukuwenza kubi kuzokubiza. Kuningi.
Sakufunda lokhu kabuhlungu ngo-2019. Elinye lamakhasimende ethu emikhumbi ye-forklift eNyakatho ye-China lalinamayunithi 40+ asebenzisa amaphakethe ethu ebhethri. Ukushaya kwebusika, izinga lokushisa lehle lafika ku--25℃, futhi kungazelelwe sithola amakholi ngo-2 AM. Amaloli ngeke akhokhise. I-BMS ilokhu iphonsa-izixwayiso zesikhashana. Ngokususa amashumi amabili nanhlanu. Yebo.
Kuvele ukuthi ama-thermistors e-NTC ebesiwasebenzisa akhukhuleka acishe abe ngu-8℃kubanda. I-BMS yayicabanga ukuthi amaseli ayeshisa ngokweqile ngenkathi ebanda ngempela. Amashaja avaliwe. Imikhumbi yonke ishonele endaweni yokugcina izimpahla. Izijeziso, izindleko zokushintshwa, izindiza zokuhamba zixolisa mathupha... ake sithi othile enkampanini yethu usenayo leyo nkontileka efakwe odongeni njengesikhumbuzo. Sibize ngaphezu kwezigidi ezimbili zama-RMB.
Yilapho umphathi wethu eshaya khona isandla sakhe etafuleni futhi wathi "kusukela manje kuqhubeke, i-platinamu i-RTD kukho konke, futhi uma noma ubani ephakamisa i-NTC futhi ukulondoloza imali, iphuma ebhonasi yabo."
Ngakho yebo. Yingakho sibhala lokhu. Hhayi ngoba ama-RTD eplatinamu amahle. Ngoba sishisiwe (okuxakayo, ukufundwa kwezinga lokushisa elibi) futhi asisakwenzi lokho futhi.
Okuyisisekelo (Kodwa Empeleni Kuwusizo)
IPlatinum RTD imele iPlatinum Resistance Temperature Detector. Isimiso silula: intambo yeplatinamu ithola ukumelana nogesi njengoba ishisa. Kala ukumelana, uyazi izinga lokushisa. Yilokho kuphela.
Izinga lemboni libizwa nge-Pt100, okusho nje ukuthi i-100 ohms ku-0 degree. Kukhona futhi i-Pt1000 (1000 ohms at 0℃) ekunikeza isignali ekhudlwana ongasebenza ngayo, ewusizo uma unokugijima kwezintambo ezinde noma izindawo ezinomsindo. Sisebenzisa i-Pt1000 kunoma yini enezintambo ezinde kuno-2 metres manje ngoba sikhathele ukuxosha amaphutha angu-0.5℃avele amelela intambo yomthofu esikhohlwe ukuyinxephezela.
Kungani iplatinum ngokukhethekile? Ngempela sazama i-nickel nethusi kusenesikhathi. Kushibhile, impela. Kodwa i-nickel iyahlanya ngaphezu kwama-degree angu-300 futhi i-copper i-oxidizes uma uyibheka kabi. I-Platinum nje... isebenza. -200 ngedigri ukuya ku-+850℃, ayigqwali, ayikhukhuleki. Okuyisicefe futhi okuthembekile, okuyilokho kanye okufunayo uma ibhethri lakho lihlezi ngaphakathi kweforklift engamathani angu-3 anyakazayo azungeze indlu yokugcina impahla.
Omunye wonjiniyela bethu uyathanda ukuthi "i-platinum iyabiza ngoba iyavilapha" - ayiphenduli ngalutho, ayiwushintshi umqondo wayo, ihlezi nje inemba. Sizothatha amavila.
Izindlela Ezintathu Zokubakha (Futhi Iziphi Ezisebenza Ngempela)
Kunenxeba-locingo, into eboshiwe, nefilimu elincanyana. Nakhu esikucabangayo ngomunye nomunye:
Inxeba-lokungenantambo
Indlela yesikole esidala. Intambo yeplatinamu isonge ingqikithi ye-ceramic. Inembile kakhulu, izinzile kakhulu. Futhi kuyabiza kakhulu futhi uhlobo oluthambile. Sisebenzisa lezi njengereferensi yokulinganisa futhi imayelana nakho. Kwaba nekhasimende elilodwa elagcizelela ukuthi-inxeba lendiza kulo lonke izimoto zalo ngoba "elingcono kakhulu." Ezinyangeni eziyisithupha kamuva isigamu sazo sase sikhukhulekile ngenxa yokuthi ukuvevezela okuvela endaweni yakhe yokugcina impahla kwaxegisa amajika. Manje usebenzisa izakhi ezigoqiwe njengawo wonke umuntu.
Ifilimu elincanyana
Impendulo eshibhile, encane, esheshayo. Ilungele izinto zabathengi noma ukuqapha{1}}okuphansi. Siwasebenzisa kumaphakethe ethu amancane angu-12V/24V lapho uma kukhona okungahambi kahle, kungabikho muntu olimalayo futhi kungabibikho lutho. Besingawafaka ku-600V forklift pack? Lutho neze. I-ceramic substrate nefilimu yeplatinamu ikhula ngamanani ahlukene, futhi ngemva kwezinkulungwane ezimbalwa zemijikelezo yokushisa uqala ukubona ukukhukhuleka. Ibhrendi eyodwa engenisiwe sizamile - ebizayo kakhulu - yehle ngo-1.5℃ngaphansi konyaka. Umhlinzeki usole ukufakwa kwethu. Sisole i-QC yabo. Noma iyiphi indlela, siyekile ukuwasebenzisa kunoma yini ebucayi.
Isici esihlanganisiwe
Yilokhu esikucacisela{0}}amaphekhi kagesi aphezulu. Amakhoyili eplatinamu ahlala ngokukhululeka kumashubhu e-ceramic agcwele impushana, ukuze akwazi ukunwebeka futhi anciphe ngaphandle kokucindezelwa kwentambo. Baphatha ukudlidliza, baphatha amabhayisikili ashisayo, abakhonondi. Ibiza kakhulu kunefilimu encane kodwa silala kangcono ebusuku. Noma yimuphi umphakeli wephakethe lebhethri le-lithium owenza izinhlelo zokusebenza zezimboni kufanele azibheke lezi.
2-Wire, 3-Wire, 4-Wire: Impikiswano Ecishe Yahlukanisa Ithimba Lethu
Lokhu kubangele izingxabano zangempela ehhovisi lethu. I-Hardware yethu eholayo ibifuna izintambo ezi-4 kukho konke. Unjiniyela wethu wezindleko ucishe waba ne-stroke ebala izikhonkwane zokuxhuma ezengeziwe nezindleko zekhebula. Kwaphela isonto bengakhulumisani.
Nansi isivumelwano:
2-intambokulungile uma ikhebula lakho lilifushane futhi awunandaba nedigri ewuhhafu lapha noma laphaya. Ukumelana nocingo ngokwalo kungeza ekufundeni kwakho. Ngokugijima kwekhebula lamamitha angu-10, ungase usuke ngo-1-2℃. Akulungile uma i-BMS yakho yenza izinqumo ngokusekelwe kuleyo nombolo.
3-intambokunxephezela ukumelana nomthofu futhi yilokho okusethwa kakhulu kwezimboni. Ilungele u-90% wezinhlelo zokusebenza. Lokhu kuwukuzenzakalelayo kwethu manje.
4-intamboiqeda ukumelana nomthofu ngokuphelele. Siyisebenzisela{1}ukuqapha izinga leselula ngesikhathi se-R&D nokuqinisekisa, kanye nanoma yiliphi ikhasimende elikhokhela ukunemba kwe-premium. Kuyadingeka futhi kunoma yiziphi izixazululo ze-OEM yebhethri ye-lithium lapho ikhasimende lenza khona izitifiketi zalo zokuphepha - abahloli bamabhuku bathanda ukubona izintambo ezi-4.
Ingxabano yaphela lapho umfana wethu wezingxenyekazi zekhompuyutha ethi "Ngingasebenzisa izintambo ezimbili ezengeziwe noma ngingakwazi ukuchazela ikhasimende ukuthi kungani ukuvikeleka kwalo kokushisa okushisayo kubangele sekwephuzile ngamadigri angu-3." Sisebenzisa izintambo ezingu-4- kuwo wonke amaphakethe e-high-voltage manje. Izindleko ezengeziwe zifana no-0.3% yenani lephakethe. Akufanele ulahlekelwe ubuthongo.
Lapho Uzobanamathisela Khona (Ukubekwa Okubalulekile Empeleni)
Sibone ezinye izinto zasendle ezivela kwabanye abakhiqizi bebhethri bezimboni. Izinzwa ze-zip{1}}ziboshelwe ezindaweni ezingahleliwe. Izinzwa zicindezele icala ngocezu lwegwebu. Olunye ucwaningo olukhumbulekayo lapho sathola khona inzwa eyayiwile ngokuphelele futhi yayilenga ngaphakathi kwendawo ebiyelwe, ifunda izinga lokushisa lomoya ngenkathi amaseli epheka.
Imithetho yethu manje:
Kumaseli
Ukuthintana ngqo nekesi, i-thermal paste noma i-3M VHB tape (siyayithanda i-9888T), bese ifakwa epoxy. Yebo kuyacasula ukusebenza kabusha. Yilokho iphuzu. Uma othile kufanele ashiyize ku-epoxy ukuze ahambise inzwa, uzocabanga kabili ngokuthi uyayidinga ngempela yini.
Phakathi kwamaseli
Ibamba izindawo ezishisayo kumaseli ehlisa isithunzi ngokushesha kunomakhelwane bawo. Lena yindlela esithole ngayo inqwaba yamaseli avela kumnikezeli owayenokukhubazeka kwangaphakathi - iseli elilodwa lalishisa ngo-8℃kunomakhelwane balo. Iyibambe ngaphambi kokuthi kwenzeke noma yini embi, yashintsha imojuli, yayilandelela yabuyela endaweni yokukhiqiza, yenqaba yonke inqwaba. Inzwa izikhokhele izikhathi ezingaba ngu-10,000 ngalolo suku.
Amabhasi kanye nokuxhumana
Amabhawodi axegayo ayashisa. Kuningi. Sibe nephekhi lapho itheminali ye-contactor eyinhloko ingazange ifakwe i-torque ngendlela efanele, futhi ngaphansi kwamandla aphezulu ibishaya amadigri angu-85 kuyilapho amaseli aseduze aku-35 degree. Ikhasimende likhononde ngokuncishiswa kwamandla "okungahleliwe". Ayizange izenzekele nhlobo - i-BMS yayenza lokho okufanele ikwenze. Kulungiswe uxhumo, inkinga ihambile. Manje iphakethe ngalinye linenzwa endleleni yamanje eyinhloko,{9}}okungaxoxiswana ngayo.
Ukupholisa ngaphakathi/ngaphandle
Uma unokupholisa okusebenzayo, udinga ukwazi ukuthi kuyasebenza ngempela yini. Kubone amasistimu amaningi kakhulu lapho iphampu yafa khona futhi akekho owaqaphela kwaze kwaba yilapho amaseli eqala ukuvuvukala.
Izinto Abangazifaki Kuma-Datasheets
Nazi ezinye izinto esizifundile ngokwenza iphutha:
Ukuzifudumeza-kungokoqobo
I-current oyiphushayo ku-RTD ukuze uyikale nayo iyayishisa. Okujwayelekile ngu-1mA ku-Pt100. Besinonjiniyela omncane owake wayiphonsa ku-5mA ngoba "isiginali enkulu, ukunemba okungcono, akunjalo?" Akulungile. Inzwa ibifunda amadigri angu-2 ukuphakama. Enqoleni yegalofu engu-48V ivele yasho ukuvuleka kwabalandeli ngaphambi kwesikhathi-. Ephaketheni lezimboni elingu-400V bekungasho ukuvalwa kwenkathazo. Sebenzisa i-1mA. Noma ngaphansi nge-Pt1000.
Umzila wezintambo ubalulekile
Gcina izintambo ze-RTD zikude namakhebuli kagesi, amadrayivu ezimoto, ama-inverter - noma yini eshintsha amaza amakhulu. Sisebenzisa ipheya esontekile evikelekile manje ngemva kokuchitha izinsuku ezintathu silungisa "isignali yezinga lokushisa elinomsindo" evele yaba yi-EMI esuka ku-VFD ekhwezwe ngo-20cm kude. Abasabalalisi be-wholesale yebhethri ye-lithium bayaqaphela: uma uthengisa kabusha amaphekhi futhi isihlanganisi sibeka i-BMS eduze kwesilawuli semoto, ukufundwa kwezinga lokushisa kuzoba udoti.
Isigaba sokubekezelelana asikona ukunemba
I-Class B Pt100 ingacishwa ngo-±0.8℃at 100℃per spec. Lelo iphutha OKUMELELE. Uma i-BMS yakho ithatha ngokuthi ifile inemba futhi ibeka imikhawulo yokushisa ku-60℃, ungase empeleni ukhawule ku-59.2℃noma 60.8℃. Yakha imikhawulo yakho ngokubekezelela engqondweni. Sakha ngemajini engu-2℃kuyo yonke imikhawulo yethu yokuvikela.
Izinzwa ezishibhile ziyakhukhuleka. Izinzwa ezinhle azikwenzi
Silandele izinzwa ezivela kubahlinzeki abathathu abahlukene phakathi neminyaka engu-2 yokusebenza ensimini. Isabelomali (esifana no-$0.80 lilinye) sehle ngokwesilinganiso esingu-0.6℃. Aphakathi-nobubanzi obungama-Japanese ($2.50) akhukhulekile ngo-0.1℃. Ama-Swiss aphambili ($8) awahambanga lutho ngaphandle kokuthi, $8 inzwa ngayinye? Sisebenzisa amaJapane. Inani elingcono kakhulu lezinto zezimboni.
Kungani Silinganisa ku-Pt100 Kuyo Yonke Into
Sasivame ukuba nengxubevange: Ama-thermistors e-NTC kumaphekhi-ezindleko eziphansi, i-Pt100 kwephezulu, ezinye izinzwa ze-KTY eziyinqaba emikhiqizweni yefa. Kwakuyiphupho elibi. Amajika okulinganisa ahlukene, amagatsha e-firmware e-BMS ahlukene, i-inventory yezingxenye eziyisipele.
Manje sekuyi-Pt100 yonke indawo. Inzwa efanayo, umphakeli ofanayo, izinqubo zokuphatha ezifanayo. Uma kukhona okungahambanga kahle, akumele sibuze ukuthi "linda, yiluphi uhlobo lwenzwa olukuleli phakethe?" Ukuhlanganiswa kwesistimu yebhethri kuba lula kakhulu uma ungaxoxi ngezinhlobo zezinzwa ezinhlanu ezihlukene.
Umehluko wezindleko phakathi kwe-NTC ne-Pt100 ufana no-$1.50 inzwa ngayinye. Ephaketheni lebhethri le-forklift elingu-$3000, lowo ngumsindo. Ezindlekweni zokwethembeka nokwesekwa, kukhona konke.
Kunoma ubani Ohlola Izinzwa Khona Manje
Uma ungunjiniyela wokuklama ufunda lokhu, nansi inguqulo emfushane:
Sebenzisa i-Pt100 noma i-Pt1000. Into ehlanganisiwe yanoma yini engaphezu kuka-100V nanoma yini edlidlizayo. Ifilimu elizacile lilungele ukuhlolwa kwebhentshi kanye{4}}nokuqapha iziteki eziphansi. 3-ubuncane bezintambo, izintambo ezi-4 uma wenza umsebenzi wokuqinisekisa noma onembile.
Thenga kubakhi bezinzwa abaqinisekisiwe ngokulandeleka kwangempela. Sibone ama-Pt100 omgunyathi empeleni okwakungama-NTC anomaka omgunyathi. Uma intengo ibonakala inhle kakhulu ukuthi ingaba yiqiniso, kunjalo.
Faka izinzwa zakho. Sebenzisa okubonakalayo okushisayo. Cindezela{2}}khulula izintambo zakho. Bhala phansi izindawo zezinzwa zakho ukuze uchwepheshe ompofu eminyakeni engu-5 kusukela manje azi ukuthi abheke kuphi.
Futhi kunoma ubani obheka amaphakethe: buza umphakeli wakho ukuthi yiziphi izinzwa ezizisebenzisayo nokuthi kungani. Uma bengakwazi ukukunikeza impendulo eqondile, lokho kukutshela okuthile. Uma bethi "sisebenzisa ama-RTD e-platinamu ngoba sifunde kabuhlungu ukuthi kwenzekani uma ungakwenzi," lowo umphakeli osekunesikhathi eside ekhona ukuze azi ukuthi yini ebalulekile.
Besilokhu senza amaphakethe ebhethri ye-lithium iminyaka engaphezu kweshumi manje - ama-forklift, amakalishi egalufu, ama-AGV, ama-floor scrubber, ukusho lokho. Inzwa yezinga lokushisa mhlawumbe ingu-0.5% wezindleko ze-BOM kanye no-50% wezimbangela zokwehluleka kwenkambu esizitholile. Akufanele nje ukhokhe imali.
Uma ufuna iqembu elijulukisa imininingwane ngezinto ezifana nalezi, uyazi ukuthi ungasithola kuphi. Sihlala sikujabulele ukukhuluma nokuphatha okushisayo nanoma ubani ozimisele ngokukulungisa.
Futhi uma othile eqenjini lakho ephakamisa ukulondoloza u-$1.50 ngephekhi ngayinye ngokushintshela kuma-NTC, zizwe ukhululekile ukubathumelela lesi sihloko. Noma i-invoyisi yaleso sigameko sango-2019. Noma yini esebenzayo.
