umatshini wokufaka isikhonkwane/ umatshini wokusika umatshini wokuhluba umatshini wokusika/ umatshini wokusika olungisayo

Cinezela-fit Isidibanisi se-Automobile ECUs II.IZIKHOKELO ZOKUYILWA

A. Isishwankathelo seNgcaciso
Inkcazo ye-press-fit connector esiyiphuhlisileyo
ishwankathelwe kwiThebhile II.
KwiTheyibhile II, "ubungakanani" buthetha ububanzi boqhagamshelwano lwendoda (okuthiwa "ubungakanani beTab") nge-mm.
B. Ukumiselwa koMmandla woQhagamshelwano olufanelekileyo
Njengenyathelo lokuqala loyilo lwetheminali yokucofa-fit, kufuneka
misela uluhlu olufanelekileyo lwamandla oqhagamshelwano.
Ngenxa yale njongo, imizobo deformation iimpawu ze
iitheminali kunye nemingxunya ephumelayo izotywe ngokwesicwangciso, njengoko kubonisiwe
kumfanekiso 2. Kuboniswa ukuba amandla oqhagamshelwano akwi-axis ethe nkqo,
ngelixa ubungakanani betheminali kunye nedayamitha yomngxuma ikwi
i-axis ethe tyaba ngokulandelelanayo.

Amandla oQhagamshelwano lokuqala

C. Ubuncinci boMnyanzelo woQhagamshelwano
Amandla onxibelelwano asezantsi amiselwe ngu-(1)
ukucwangcisa ukuchasana koqhagamshelwano olufunyenwe emva kokunyamezela
iimvavanyo kwi-axis ethe nkqo kunye namandla oqhagamshelwano okuqala ngokuthe tye
i-axis, njengoko kubonisiwe kumfanekiso wesi-3 ngokucwangcisekileyo, kunye (2) ukufumana i
ubuncinci bamandla oqhagamshelwano njengokuqinisekisa ukuxhathisa umfowunelwa
ngaphantsi kwaye uzinzile.
Kunzima ukulinganisa amandla oqhagamshelwano ngokuthe ngqo kuqhagamshelo olulungele ushicilelo ngokusebenza, ke silufumene ngolu hlobo lulandelayo:
(1) Ukufaka iitheminali kwimingxuma ephumela kwimingxuma, ene
iidayamitha ezahlukeneyo ngaphaya koluhlu olumiselweyo.
(2) Ukulinganisa ububanzi betheminali emva kokufaka ukusuka kwi
isampula yokusikwa kwecandelo lomnqamlezo (umzekelo, bona umfanekiso we-10).
(3) Ukuguqula ububanzi betheminali obulinganiswe ku-(2) kwi
amandla oqhagamshelwano usebenzisa uphawu loguqulo
Umzobo wetheminali efunyenwe ngokwenyani njengoko kubonisiwe kuyo
Umzobo 2.

Amandla oQhagamshelwano lokuqala

Imigca emibini ye-terminal deformation ithetha enye ye
ubukhulu kunye nobuncinci besayizi yetheminali ngenxa yosasazo phakathi
inkqubo yokuvelisa ngokulandelelanayo.
Uluhlu II Ukucaciswa kweSiqhagamshelo esiyiphuhlisiweyo

Uluhlu II Ukucaciswa kweSiqhagamshelo esiyiphuhlisiweyo
Cinezela-fit Isidibanisi see-ECUs zeMoto

Kucacile ukuba amandla oqhagamshelwano aveliswa phakathi
iitheminali kunye nangona-imingxuma inikwa ngokuhlangana ezimbini
imizobo yeetheminali kunye nemingxuma kwi-Fig. 2, leyo
lithetha imo elungeleleneyo yoxinzelelo lwetheminali nangokwandiswa komngxuma.
Sizimisele (1) oyena mbutho uphantsi wonxibelelwano
efunekayo ukwenza ukuchasana koqhagamshelwano phakathi kweetheminali kunye
nangona-imingxuma ephantsi kwaye izinzile ngakumbi ngaphambi / emva kokunyamezela
iimvavanyo zokudityaniswa kobungakanani obuncinci be-terminal kunye
ubuninzi bomngxuma we-diameter, kunye (2) namandla amakhulu
ngokwaneleyo ukuqinisekisa ukuxhathisa ukugquma phakathi kweendawo ezikufutshane
imingxunya idlula ixabiso elichaziweyo (109Q yale nto
uphuhliso) kulandela iimvavanyo zonyamezelo lwe
indibaniselwano yobukhulu bobukhulu bobukhulu betheminali kunye nobuncinci
Idayamitha yomngxuma, apho ukuwohloka kokugquma
ukumelana kubangelwa ukufunxa ukufuma kwi
indawo eyonakeleyo (delaminated) kwi-PCB.
Kula macandelo alandelayo, iindlela ezisetyenziselwa ukumisela
awona mandla asezantsi kunye nawona aphezulu ngokulandelelana kwawo.

 

 

 

 

D. Ukumiselwa koNyanzelo oluPhezulu
Kuyenzeka ukuba i-interlaminar delaminations kwi-PCB ibangele
ukuhla kwe-insulation resistance kubushushu obuphezulu kunye nokungena
iatmosfera efumileyo xa iphantsi kwamandla oqhagamshelwano ngokugqithisileyo,
eveliswa ngokudityaniswa kobuninzi
ubungakanani betheminali kunye nedayamitha yokungena komngxuma omncinci.
Kolu phuhliso, awona mandla aphezulu avumelekileyo oqhagamshelwano
yafunyanwa ngolu hlobo lulandelayo;(1) ixabiso lovavanyo lwe
umgama omncinci ovumelekileyo wokugquma "A" kwi-PCB wawu
efunyenwe ngokomfuniselo kwangaphambili, (2) evumelekileyo
ubude be-delamination bubalwe ngokwejometri njenge (BC A)/2, apho "B" kunye no "C" ziyi-pitch yesiphelo kunye
Idayamitha yomngxuma ngokulandelelanayo, (3) eyona delamination
ubude kwi PCB ezahlukeneyo ngokusebenzisa-umngxuma idayamitha iye
ifunyenwe ngokomfuniselo kwaye yenziwe iyelenqe kubude obunyikinyiweyo
vs. Umzobo wokuqala wamandla oqhagamshelwano, njengoko kubonisiwe kwiSazobe sesi-4
ngokwesicwangciso.
Ekugqibeleni, awona mandla oqhagamshelwano aphezulu amiselwe ngoko
njengokungagqithisi kubude obuvumelekileyo bobudenge.
Indlela yoqikelelo lwamandla oqhagamshelwano iyafana ne
ichazwe kwicandelo elingaphambili.

IZIKHOKELO ZOKUYILWA

E. Uyilo lwemilo yetheminali
Imilo yetheminali yenzelwe ukuba ivelise
Amandla oqhagamshelwano afanelekileyo (i-N1 ukuya ku-N2) kumngxuma wokuphumela omiselweyo
Uluhlu lwedayamitha ngokusebenzisa isiqalelo esinemilinganiselo emithathu enomda
iindlela (FEM), kubandakanywa umphumo we-deformation yangaphambili yeplastiki
ukukhuthaza kwimveliso.
Ngenxa yoko, siye samkela i-terminal, emile njenge-
"N-shape cross section" phakathi kweendawo zoqhagamshelwano ezikufutshane ne
ezantsi, eye yavelisa amandla oqhagamshelwano aphantse afane
ngaphakathi koluhlu olumiselweyo lwedayamitha yomngxuma, kunye a
umngxuma-umngxuma kufutshane nencam evumela umonakalo we-PCB ukuba ube
kuncitshiswe (umzobo 5).
Kuboniswe kumfanekiso wesi-6 ngumzekelo we-three-dimensional
Imodeli ye-FEM kunye namandla okusabela (oko kukuthi, amandla oqhagamshelwano) vs
Idayagram yokufuduka ifunyenwe ngokuhlalutya.

Umzobo wesi-5 woMzobo weSitenari

F. Uphuhliso lwezinkcenkce eziqinileyo
Kukho iindlela ezahlukeneyo zonyango lokuthintela
oxidization ye-Cu kwi-PCB, njengoko ichaziwe kwi-II - B.
Kwimeko yonyango lwe-metallic plating surface, njenge
i-tin okanye isilivere, ukuthembeka koqhagamshelwano lombane kwi-press-fit
iteknoloji inokuqinisekiswa ngokudibanisa ne
iitheminali zokucwenga zeNi.Nangona kunjalo kwimeko ye-OSP,Ukufakwa kwenkcenkce kwiitheminali kufuneka kusetyenziselwe ukuqinisekisa ixesha elideixesha ukuthembeka koqhagamshelwano lombane.

Nangona kunjalo, ukufakwa kwetoti okuqhelekileyo kwiitheminali (for
umzekelo, ubukhulu be-1ltm) yenza i-scraping-offyetotingexesha lenkqubo yokufakwa kwetheminali.(Ifoto. "a" kwisazobe 7)

kwaye oku kukhuhla-off mhlawumbi kubangela iisekhethi ezimfutshane ngeiitheminali ezikufutshane.

Ngoko ke siye savelisa uhlobo olutsha lwetoti eqinileyo
ukucwenga, okungakhokeli kuyo nayiphi na inkonkxa ekhutshiweyo kunyeeqinisekisa ukuthembeka koqhagamshelwano lombane ixesha elidengaxeshanye.

Le nkqubo intsha yokucwenga iqulathe (1) inkonkxa ebhityileyo eyongezelelweyo
ukugquma kwindawo engaphantsi, (2) inkqubo yokufudumeza (i-tin-reflow)
eyenza umaleko wentsimbi elukhuni yealloyi phakathi kwe
ukufakwa phantsi komhlaba kunye nokufakwa kwenkcenkce.
Ngenxa yokuba intsalela yokugqibela ye-tin plating, engunobangela
yokukhuhla, kwiitheminali iba bhityile kakhulu kwaye
isasaza non-uniformly kwi ingxubevange umaleko, akukho ukukhuhla-offyei-tin yaqinisekiswa ngexesha lenkqubo yokufaka (Ifoto "b" kuyoUmzobo 7).

Ukucwenga kweTiXn enzima
Usetyenziso olugunyazisiweyo olunelayisensi kuphela: Ithala leencwadi leYunivesithi yaseCornell.Ikhutshelwe ngoNovemba 11,2022 ngo-05:14:29 UTC ukusuka kwi-IEEE Xplore.Izithintelo ziyasebenza.

Ixesha lokuposa: Dec-08-2022