Daim ntawv thov ntawm cov kav dej kub thiab vapor chamber hauv 5G xov tooj ntawm tes

Los ntawm 4G era mus rau 5G era, tau muaj kev txhim kho tseem ceeb hauv kev ua haujlwm ntawm cov chips smartphone, cov ntaub ntawv xa mus, RF modules, thiab lwm yam nta. Kev them nyiaj wireless, NFC, thiab lwm yam kev ua haujlwm tau maj mam dhau los ua cov cuab yeej siv, thiab cov cua kub ntawm cov xov tooj ntawm tes txuas ntxiv mus. Vim tias kev nce qib txuas ntxiv hauv cov cim xws li kev sib xyaw ua ke, thiab kev sib dhos ua ke, cov khoom siv hluav taws xob tau txais kev ua haujlwm thiab kev ua haujlwm txuas ntxiv thaum lawv qhov kev ua tau zoo txuas ntxiv txhim kho. Raws li kev txheeb cais, cov khoom siv tsis ua haujlwm los ntawm thermal concentration hauv cov khoom siv hluav taws xob tso nyiaj rau 65-80% ntawm tag nrho cov kev ua haujlwm tsis ua haujlwm. Txhawm rau kom tsis txhob muaj cov khoom tsis ua haujlwm los ntawm kev kub dhau, thermal conductive silicone roj, thermal conductive gel, graphite thermal conductive ntawv, cov yeeb nkab kub, vapor chamber thiab lwm yam thev naus laus zis tau tshwm sim thiab txuas ntxiv mus. Kev tswj cov cua sov tau dhau los ua qhov kev xaiv tseem ceeb rau cov khoom siv hluav taws xob hauv 5G era.

Feem ntau hais lus, muaj ob txoj hauv kev rau cov khoom siv hluav taws xob kom tshem tawm cov cua sov: ua kom txias txias (kom txo cov cua sov ntawm lub xov tooj) thiab kev ua kom txias txias (kom ceev cov cua sov tawm sab nraud). Ntawm lawv, kev ua kom txias txias feem ntau yog siv cov khoom siv hluav taws xob tsis cuam tshuam rau cov cua sov kom yuam kom cov cua sov, uas feem ntau siv rau cov khoom siv hluav taws xob loj thiab cov khoom siv hluav taws xob loj, xws li cov kiv cua nruab rau hauv desktop computers thiab laptops, thiab kua txias txias rau cov ntaub ntawv. center servers; Passive heat dissipation feem ntau tso tawm cov cua sov uas tsim los ntawm cov khoom siv rau hauv ib puag ncig los ntawm cov khoom siv thermal conductive thiab cov khoom siv. Nws yog ib txoj kev tshav kub dissipation yam tsis muaj kev koom tes ntawm cov khoom siv hluav taws xob thiab tau siv dav hauv cov xov tooj ntawm tes, ntsiav tshuaj, smartwatches, chaw nres tsheb sab nraum zoov, thiab lwm yam.

Tam sim no, cov thev naus laus zis thev naus laus zis siv hauv cov khoom siv hluav taws xob feem ntau suav nrog cov khoom siv thermal xws li graphite heat dissipation, hlau backplane, thav duab tshav kub dissipation, thermal conductive gel heat dissipation, thiab thermal conductive li xws li cov kav dej kub thiab VC. Ntawm lawv, thermal conductive gel, thermal conductive silicone roj, graphite ntawv thiab hlau ntawv yog tsuas yog siv nyob rau hauv cov khoom me me thiab nruab nrab cov khoom siv hluav taws xob, thaum cov yeeb nkab kub thiab VC feem ntau yog siv hauv cov khoom siv hluav taws xob loj thiab nruab nrab xws li laptops, computers. thiab servers.

Cov kav dej kub thiab cov vapor chamber siv cov hluav taws xob hloov hluav taws xob sai ntawm cov khoom siv hluav taws xob thiab cov khoom cua txias, ua rau cov thermal conductivity nce ntau dua 10 npaug piv rau cov khoom siv hlau thiab graphite. Raws li cov kev daws teeb meem cua txias, lawv tau siv dav hauv kev lag luam smartphones hauv xyoo tas los no. Ntawm lawv, thermal conductivity ntawm cov yeeb nkab cua sov yog li ntawm 10000 txog 100000 W / mK, uas yog 20 npaug ntawm cov yeeb yaj kiab tooj liab ntshiab thiab 10 npaug ntawm ntau txheej graphite zaj duab xis; Raws li kev hloov kho ntawm cov yeeb nkab cua sov thev naus laus zis, lub vapor chamber ntxiv txhim kho cov thermal conductivity.

Cov yeeb nkab cua sov feem ntau yog tsim los ntawm lub plhaub, lub tshuab nqus tsev, thiab lub hau kawg, uas rub cov yeeb nkab sab hauv mus rau 1.3 × Tom qab lub siab ntawm (10-10-2) Pa, sau cov kua dej kom tsim nyog. sau cov khoom ntxeem tau capillary ntawm lub tshuab nqus tsev kom nruj rau sab hauv phab ntsa ntawm lub raj nrog cov kua thiab kaw nws. Ib qho kawg ntawm cov yeeb nkab yog qhov evaporation seem (sab cua sov), thiab lwm qhov kawg yog seem condensation (txias seem). Ib qho kev rwb thaiv tsev tuaj yeem npaj nruab nrab ntawm ob ntu raws li daim ntawv thov xav tau. Lub suction core txais cov khoom siv capillary microporous, uas siv capillary suction (tsim los ntawm cov kua nto nro) kom reflux cov kua. Cov kua hauv lub raj absorbs cua sov thiab evaporates nyob rau hauv lub tshav kub absorption seem, condenses thiab reflux nyob rau hauv lub txias seem, thiab circulates cua sov.

Lub hauv paus ntsiab lus ua haujlwm ntawm vpaor chamber zoo ib yam li cov yeeb nkab cua sov, uas kuj muaj plaub yam tseem ceeb: conduction, evaporation, convection, thiab condensation. Qhov sib txawv tseem ceeb ntawm ob qhov lus dag nyob rau hauv txoj kev sib txawv ntawm kev ua kom sov. Lub tshav kub conduction hom ntawm lub tshav kub yeeb nkab yog ib-dimensional, uas yog ib tug linear tshav kub conduction hom, thaum tshav kub conduction hom ntawm vpaor chamber yog ob-dimensional, uas yog ib tug nto tshav kub conduction hom. Piv nrog rau cov kav dej kub, qhov chaw sib cuag ntawm cov phaj homogenizing, qhov chaw tshav kub, thiab qhov nruab nrab kub dissipation yog loj dua, uas tuaj yeem ua rau qhov kub thiab txias dua; Thib ob, siv vpaor chamber tuaj yeem tiv tauj ncaj qha rau cov khoom siv hluav taws xob thiab cov khoom siv kom txo tau cov thermal tsis kam, thaum lub tshav kub yeeb nkab yuav tsum tau embedded nrog ib tug substrate ntawm lub tshav kub qhov chaw thiab lub tshav kub yeeb nkab; Thaum kawg, vpaor chamber yog sib dua thiab hloov tau yooj yim rau cov qauv ntawm kev sib xyaw ua ke thiab lub teeb yuag. Cov kev tshawb fawb cuam tshuam tau pom tias qhov kev ua tau zoo ntawm VC radiators tau txhim kho los ntawm 20% mus rau 30% piv rau cov kav dej kub.

Txawm hais tias cov thermal conductivity ntawm cov kav dej kub thiab cov vapor chamber yog siab dua, lub hauv paus ntsiab lus yog ua kom cov cua sov hloov ntawm cov khoom cua sov ntawm lub xov tooj mus rau ib puag ncig. Qhov kawg thermal nyhuv tseem nyob ntawm qhov thermal convection ntawm cov khoom siv thermal thiab cua. Yog li ntawd, cov yam ntxwv thermal ntawm cov khoom siv thermal muaj qhov cuam tshuam tsis zoo rau thermal nyhuv ntawm cov xov tooj ntawm tes. Tam sim no, tag nrho cov kev daws teeb meem ntawm "kub dab dej (graphene zaj duab xis / graphite ntawv) + cua sov yeeb nkab / vapor chamber" yog maj mam lees paub los ntawm kev ua lag luam.