Likoloi tsa MCPCB | Ho Tšepahala Tlas'a Maemo a Feteletseng

Selelekela: Mathata a Thermal ho Electronics ea Likoloi

Litsamaiso tsa elektroniki tsa likoloi li sebetsa maemong a boima haholo moo mocheso o ka fetang 125 ° C tlas'a maemo a hood, ha ka nako e ts'oanang li mamella ho thothomela, ho feto-fetoha ha mongobo le ho palama baesekele. Maemo ana a thata a baka mathata a bohlokoa a tsamaiso ea mocheso a amang ka kotloloho ho ts'epahala ha likarolo le nako e telele ea sistimi.

Theknoloji ea likoloi ea MCPCB e hlahile e le tharollo ea bohlokoa, e fanang ka bokhoni bo phahameng ba ho qhala mocheso bo bolokang ts'ebetso e tsitsitseng leha liboto tsa potoloho tse tloaelehileng li hloleha. Bokhoni ba ho fetisetsa mocheso ka katleho ho tloha likarolong tse bonolo bo fetohile ba bohlokoa ha lisebelisoa tsa elektroniki tsa likoloi li ntse li eketseha ka bongata ba matla le ho rarahana, e leng se etsang hore litharollo tsa PCB tsa mantlha tsa tšepe e be tsa bohlokoa bakeng sa ts'ebeliso ea motlakase ea lisebelisoa tsa elektroniki tsa likoloi.

Hobaneng ha Likoloi tsa MCPCB li Feta Lisebelisoa tsa Setso tsa PCB

Metal Core Printed Circuit Boards e na le sebopeho se ikhethileng sa mekato e meraro se nang le lesela la potoloho ea koporo, lesela la dielectric la thermally conductive, le setsi sa tšepe sa tšepe hangata se entsoeng ka aluminium kapa koporo. Kaho ena e hlile e fapane le liboto tse tloaelehileng tsa FR4, tse itšetlehileng ka thepa ea fiberglass-epoxy e nang le mocheso o fokolang oa mocheso o ka bang 0.3 W/mK.

Liqapi tsa likoloi tsa MCPCB li finyella mocheso oa mocheso ho tloha ho 1.0 ho ea ho 8.0 W / mK ho itšetlehile ka thepa ea dielectric e khethiloeng, e leng ho nolofalletsang mocheso hore o phalle ka ho toba karolong ea motheo ea tšepe moo e senyehang ka potlako. Melemo ea ts'ebetso e kenyelletsa:

• Boemo bo phahameng ba mocheso - Phallo ea mocheso litefiso tse fihlang ho makhetlo a 26 ka potlako ho feta FR4, li fokotsa ka kotloloho mocheso oa motsoako oa likarolo le ho lelefatsa bophelo ba ts'ebetso.
• Ho tsitsa ha mechine - The substrate ea tšepe e thata e fana ka botsitso bo ikhethang tlas'a khatello ea mocheso, ho fokotsa ntoa le ho boloka ho tsamaisana ho nepahetseng ha likarolo tsa bophelo bohle ba boto.
• Khanyetso ea khatello - Metal core kaho thibela boto flexure hore ka tloaelo etsa hore solder kopanelo hloleha ka thepa e tloaelehileng PCB tlas'a thothometsa kamehla koloi.

Libaka tsa Kopo tsa Likoloi tsa MCPCB

Lihlopha tsa Taolo ea Enjene le Tsamaiso ea Matla

Li-Engine Control Units (ECUs) li sebetsa libakeng tse phahameng ka ho fetisisa tsa mocheso oa koloi, moo tsamaiso ea mocheso ho lisebelisoa tsa motlakase tsa likoloi e leng boima haholo. Li-transistors tsa motlakase, li-regulator, le li-microcontrollers li hlahisa mocheso o mongata oa ho chencha, 'me ho se lekane ha matla ho ka baka ho baleha ha mocheso kapa ho hloleha ha sistimi.

Likopano tsa likoloi tsa MCPCB - tseo hangata li thehiloeng ho aluminium-li theha tsela e tobileng ea mocheso ho tloha likarolong ho ea ho chassis kapa heatsink. ECU e entsoeng hantle e sebelisang 2.0 W / mK dielectric layer e ka finyella khanyetso ea junction-to-case ka tlase ho 2 ° C / W, ha e bapisoa le 8-10 ° C / W ka meralo ea FR4.

Melemo ea mantlha e kenyelletsa:

• Tsela e khuts'oane ea mocheso - Phallo e tobileng ea mocheso ka setsing sa aluminium e boloka mocheso o sireletsehileng oa mateano.
• Bophelo ba karolo e atolositsoeng - Ho hanyetsa mocheso o tlase ho thibela ho chesa le ho senyeha.
• Matla a phahameng a matla - Phetiso e ntlafalitsoeng ea mocheso e ts'ehetsa meralo e kopaneng, e ts'epahalang haholo ea ECU.

Lisebelisoa tsa Leseli tsa Likoloi tse nang le Theknoloji ea MCPCB

Mabone a LED, li-DRL, le mabone a mohatla a hloka taolo e tiileng ea mocheso ho boloka khanya le botsitso ba mebala. Mocheso o mong le o mong oa 10 ° C oa mocheso oa mateano a LED o ka khutsufatsa nako ea bophelo ka ho fihla ho 50%, e totobatsa bohlokoa ba ho hasana ha mocheso ka katleho.

Meetso ea PCB ea mabone a likoloi e sebelisang theknoloji ea mantlha ea tšepe e netefatsa phetisetso e nepahetseng ea mocheso le ho tsitsa ha optical. Mehaho ea MCPCB e thehiloeng ho aluminium e thehiloeng ho aluminium hangata e sebelisa maske e tšoeu ea solder ho ntlafatsa ponahalo ea khanya ha e ntse e thusa ho felloa ke mocheso.

Melemo ea moralo:

• Ts'ebetso e tsitsitseng ea optical - Mocheso o laoloang oa mateano o boloka 'mala le khanya.
• Mosebetsi o kopantsoeng oa heatsink - Metal substrate e tlosa likarolo tse arohaneng tsa mocheso oa mocheso.
• Kopano e nolofalitsoeng - Lisebelisoa tse fokolang le li-interfaces li ntlafatsa ho tšepahala ha nako e telele.

Li-Modules tsa Matla le Mekhoa ea ho khanna ea Motlakase

Likoloi tsa motlakase le tse nyalisitsoeng li itšetlehile ka li-converter tsa DC-DC, li-inverter le li-module tse tsamaisang makholo a li-ampere. Li-module tsena tsa matla li hloka ho hasa mocheso o ikhethang ho boloka ts'ebetso le ho thibela khatello ea likarolo.

Likopano tsa likoloi tsa MCPCB bakeng sa li-module tsa motlakase li kopanya lipotoloho tsa koporo tse phahameng tsa hajoale le metheo ea tšepe e tsamaisang mocheso. Litharollo tsa MCPCB tse thehiloeng ho koporo li fana ka ts'ebetso e phahameng ea mocheso bakeng sa matla a matla a feteletseng.

Lintlha-khōlō tsa tšebetso:

• Phahameng mogote conductivity - Li-cores tsa koporo li fihla ho 400 W/mK, ho feta mefuta e meng ea aluminium.
• Ts'ebetso e ntlafalitsoeng ea hajoale - Mekhahlelo e metenya ea koporo e ts'ehetsa ts'ebetso ea ho fetola meroalo e boima.
• Moralo o kopaneng oa matla a holimo - E nolofalletsa litsamaiso tse nyane, tse bobebe, hape tse sebetsang hantle ho sa tsotellehe litšenyehelo tse phahameng.

Ho Tšepahala ha Likoloi tsa MCPCB Tlas'a Maemo a Feteletseng

Libaka tsa likoloi li pepesa likopano tsa elektroniki mochesong o matla, ho thothomela le mongobo. Litharollo tse tšepahalang tsa tšepe tsa PCB li tlameha ho boloka ts'ebetso e tsitsitseng tlasa lintlha tsena tse kopaneng tsa khatello ea maikutlo:

• Thermal cycling mamello - E pholoha -40 ° C ho ea ho +150 ° C liphetoho ka lipotoloho tse likete ntle le delamination kapa tahlehelo ea conductivity.
• Ho tšoarella ha mechine - E mamella ho thothomela ho tloha ho 10 Hz ho isa ho 2000 Hz ho fihla ho 30g ho potlakisa ho latela ISO 16750.
• Tšireletso ea tikoloho - E hanela kutu le mongobo ka lisebelisoa tse tsoetseng pele le boleng ba thepa.

Thermal Cycling Performance

Likopano tsa likoloi tsa MCPCB li mamella ho palama libaesekele tse sa khaotseng bophelo bohle ba koloi. Katoloso e sa tsamaellaneng ea mocheso lipakeng tsa thepa e ka baka delamination kapa mokhathala oa solder haeba e sa laoloe.

Metal core PCB meaho e fokotsa kotsi ena ka ho hokahanya thepa e ntlafalitsoeng. Aluminium substrates (≈23 ppm/°C) e bapisa haufi-ufi lipotoloho tsa koporo (≈17 ppm/°C), e fokotsa khatello ea kelello ea CTE ha e bapisoa le FR4, e atolohang ho fihla ho 70 ppm/°C ho latela Z-axis. Tlhokomelo ea AEC-Q200 e netefatsa ts'ebetso e tsitsitseng ea mocheso le motlakase ka lipotoloho tse 1000+ tsa mocheso.

Lintlha tsa bohlokoa tse tšepahalang:

• Khokahano e ntlafalitsoeng ea CTE - E fokotsa ho se lumellane ha katoloso mme e thibela ho peperana kapa ho putlama.
• Thermal botsitso - E boloka botšepehi ba motlakase tlas'a -40 ° C ho ea + 150 ° C ho palama baesekele.
• Pakiloeng thuto ea likoloi - E lekoa ho latela AEC-Q200 bakeng sa ho latela ts'epo ea nako e telele.

Mechanical Durability le Vibration Resistance

Meralo ea likoloi ea MCPCB e fana ka mokhoa o tsitsitseng o hananang le mokhathala o bakoang ke ho sisinyeha. Ho fapana le liboto tsa FR4, setsi sa tšepe se thibela ho fetoha, hoo hangata ho lebisang ho manonyeletso a solder kapa ho robeha ha morao.

Teko ho ISO 16750 e bonts'a hore likopano tsa mantlha tsa tšepe li mamella ho pepeseha ka botlalo ho sisinyeha ntle le ho hloleha ha mochini. Lera le thata la motheo le boetse le felisa tlhoko ea litšehetso tse eketsehileng tsa mochini, ho nolofatsa moralo le ho fokotsa boima ba sistimi.

Melemo ea moralo oa vibration:

• Motheo oa tšepe o thata - E thibela ho feto-fetoha ha boto le mokhathala oa solder.
• Likarolo tse fokotsehileng tsa sebopeho - E fokotsa lisebelisoa tse ntseng li eketseha le boima ka kakaretso.
• Ho tšepahala ho tsitsitseng - E boloka botšepehi ba mochine ho pholletsa le bophelo ba koloi.
• Tšireletso ea tikoloho

Kaho ea likoloi tsa MCPCB e fana ka tšireletso e matla khahlanong le mongobo le lik'hemik'hale. Liqeto tsa bokaholimo tse kang OSP, ENIG, kapa lipente tse kobehileng li sireletsa mesaletsa ea koporo le li-substrate tsa tšepe ho tsoa mafomeng.

Setsi sa tšepe ka boeona se sebetsa e le thibelo ea mongobo, e thibelang ho kenella ha mouoane ho tloaelehileng ho FR4 tlas'a mongobo o phahameng. Tlhahiso tlasa litekanyetso tsa IATF 16949 e netefatsa ts'ebetso ea thepa, taolo ea ts'ebetso, le boleng bo sa fetoheng ba sehlahisoa.

Mehato ea ts'epahalo ea tikoloho:

• Motheo oa thibelo ea mongobo - E emisa delamination e bakoang ke mongobo le litsela tsa ho lutla.
• Liqeto tse sireletsang - ENIG, OSP, le likhoele li sireletsa khahlanong le oxidation le kutu.
• Tlhahiso e netefalitsoeng - Ho latela melao ea IATF 16949 ho netefatsa ts'epo e phetoang ea boemo ba likoloi.

Mehopolo ea Moralo le Tlhahiso bakeng sa MCPCB ea Likoloi

Baenjiniere ba nts'etsapele likopano tsa likoloi tsa MCPCB ba tlameha ho leka-lekanya lintlha tse 'maloa tse hlolisanoang ho ntlafatsa ts'ebetso ea mocheso ha ba ntse ba kopana le litšenyehelo le lithibelo tsa tlhahiso. Li-parameter tsa bohlokoa tsa moralo li kenyelletsa:

• Ntlafatso ea lera la dielectric - Khetho ea botenya pakeng tsa 50 μm le 150 μm e leka-lekaneng ho hanyetsa mocheso khahlanong le litlhoko tsa ho itšehla thajana.
• Khetho ea thepa ea substrate - Ho khetha pakeng tsa aluminium bakeng sa litharollo tse theko e tlaase le koporo bakeng sa lisebelisoa tse feteletseng tsa mocheso oa mocheso.
• Ho lumellana ha sefahleho - Ho khetha ENIG bakeng sa bokhoni ba ho kopanya terata kapa OSP bakeng sa katleho ea theko e phahameng.
• Moqapi oa tsela ea mocheso - Maano a ho beha likarolo a fokotsang ho kopanya mocheso le ho felisa libaka tse chesang tsa lehae.

Ketsiso ea mocheso e sebelisang tlhahlobo ea likarolo tse lekanyelitsoeng e lokela ho etsahala qalong ea ts'ebetso ea moralo ho netefatsa maano a ho qhala mocheso pele o itlama ho latela mehlala. Likarolo tsa bohlokoa li hloka tlhahlobo e hlokolosi ea ho beha ho netefatsa hore libaka tse chesang tsa lehae li lula li le ka har'a meeli e amohelehang.

Setšoantšo sa bopaki ba boto tlas'a maemo a sebele a ts'ebetso se tiisa hore moralo o finyella lipakane tsa ho tšepahala 'me o tsebahatsa lintlafatso leha e le life tse hlokahalang pele tlhahiso ea molumo e qala. Karolo ena ea netefatso e bonahala e le ea bohlokoa bakeng sa ho qoba likhakanyo tse bitsang chelete e ngata ka mor'a ho sebelisa matsete.

Qetello: Ho netefatsa ho Tšepahala ha Nako e telele ho Litsamaiso tsa Likoloi

Theknoloji ea likoloi ea MCPCB e tšehetsa tsamaiso e tšepahalang ea mocheso likoloing tsa sejoale-joale, e netefatsa ts'ebetso e tsitsitseng ho pholletsa le taolo ea matla, mabone le lits'ebetso tsa ho khanna motlakase. Motsoako oa eona oa conductivity e phahameng ea mocheso, ho tiea ha mochine, le ho hanyetsa tikoloho ho nolofalletsa ts'ebetso e tsitsitseng tlas'a maemo a feteletseng a likoloi.

Ha matla a matla le ho rarahana ha sistimi ho ntse ho eketseha, litharollo tse tsoetseng pele tsa tšepe tsa PCB li fetoha tsa bohlokoa bakeng sa ho boloka ts'epo le ho fihlela litekanyetso tsa indasteri bakeng sa ho tšoarella le polokeho. Highleap Electronics e fana ka tharollo ea MCPCB ea boemo ba likoloi ka:

• Bopaki ba ho tšepahala - Tlhahiso e netefalitsoeng ea IATF 16949 e nang le lisebelisoa tse felletseng le ts'ebetso ea ts'ebetso.
  
• Tsebo ea moralo oa mocheso - Li-stack-ups tse ntlafalitsoeng le litlhophiso tsa dielectric bakeng sa phetisetso e nepahetseng ea mocheso.
• Ts'ehetso e felletseng ea boenjiniere - Ho tloha tlhahlobong ea prototype ho isa tlhahiso ea bongata.
• Kopo e feto-fetohang - Litharollo tse etselitsoeng taolo ea enjine, mabone a LED, le li-module tsa taolo ea matla.

Selekane le Highleap Electronics ho nts'etsapele likopano tsa MCPCB tse fihlelang litlhoko tse matla tsa tikoloho ea likoloi le ho netefatsa ts'epahalo ea nako e telele ea sistimi.