Cov cua sov uas tsim los ntawm cov khoom siv hluav taws xob thaum lub sijhawm ua haujlwm ua rau qhov kub thiab txias ntawm cov khoom siv tau nce sai heev. Yog tias cov cua sov tsis tau ploj mus rau lub sijhawm, cov cuab yeej yuav ua kom sov ntxiv, cov cuab yeej yuav ua tsis tiav vim overheating, thiab kev ntseeg siab ntawm cov khoom siv hluav taws xob yuav poob qis. Yog li ntawd, nws yog ib qho tseem ceeb heev rau dissipate tshav kub rau lub Circuit Court board.

Factor Analysis ntawm Kub Rise ntawm Printed Circuit Board

Qhov ncaj qha ua rau qhov kub thiab txias ntawm cov ntawv luam tawm yog vim muaj cov khoom siv hluav taws xob siv hluav taws xob, thiab cov khoom siv hluav taws xob muaj hluav taws xob siv hluav taws xob sib txawv, thiab kev siv hluav taws xob hloov pauv nrog lub zog noj.

Ob qhov tshwm sim ntawm qhov kub nce hauv cov ntawv luam tawm:
(1) Qhov kub thiab txias hauv cheeb tsam nce los yog qhov loj ntawm qhov kub nce;
(2) Lub sij hawm luv luv kub nce los yog lub sij hawm ntev kub nce.

Thaum txheeb xyuas PCB thermal zog noj, feem ntau los ntawm cov hauv qab no.

Kev siv hluav taws xob
(1) Tshawb xyuas kev siv hluav taws xob hauv ib cheeb tsam;
(2) Txheeb xyuas qhov kev faib hluav taws xob siv hluav taws xob ntawm PCB Circuit Board.

2. Cov qauv ntawm cov ntawv luam tawm
(1) Qhov loj ntawm cov ntawv luam tawm;
(2) Cov khoom ntawm cov ntawv luam tawm.

3. Txoj kev teeb tsa ntawm cov ntawv luam tawm
(1) Txoj kev txhim kho (xws li kev teeb tsa ntsug thiab kab rov tav installation);
(2) Sealing mob thiab nyob deb ntawm lub casing.

4. Cov hluav taws xob cua sov
(1) Emissivity ntawm cov ntawv luam tawm saum npoo;
(2) Qhov sib txawv ntawm qhov kub thiab txias ntawm cov ntawv luam tawm thiab qhov chaw nyob ib sab thiab lawv qhov kub thiab txias;

5. Thaum tshav kub kub conduction
(1) Nruab lub radiator;
(2) Kev ua haujlwm ntawm lwm qhov kev teeb tsa kev teeb tsa.

6. Thermal convection
(1) Ntuj convection;
(2) Ua kom txias convection.

Kev tsom xam ntawm cov ntsiab lus saum toj no los ntawm PCB yog ib txoj hauv kev zoo los daws qhov kub thiab txias ntawm cov ntawv luam tawm. Cov yam ntxwv no feem ntau cuam tshuam thiab nyob ntawm cov khoom thiab qhov system. Feem ntau cov xwm txheej yuav tsum tau txheeb xyuas raws li qhov xwm txheej tiag tiag, tsuas yog rau qhov xwm txheej tshwj xeeb. Tsuas yog nyob rau hauv qhov xwm txheej no tuaj yeem ntsuas qhov ntsuas kub thiab kev siv hluav taws xob los yog kwv yees kom raug.

Circuit board txias txoj kev

1. Cov khoom siv hluav taws xob ua kom sov siab ntxiv rau lub dab dej kub thiab cov khoom siv hluav taws xob kub
Thaum ob peb cov khoom siv hauv PCB tsim kom muaj cua sov ntau (tsawg dua 3), lub dab dej kub lossis cov yeeb nkab cua sov tuaj yeem muab ntxiv rau cov khoom siv hluav taws xob. Thaum qhov kub tsis tuaj yeem txo qis, lub dab dej kub nrog lub kiv cua tuaj yeem siv los txhim kho cov cua sov dissipation. Thaum muaj cov khoom siv cua sov ntau dua (ntau dua 3), tuaj yeem siv cov khoom siv hluav taws xob loj. Nws yog ib qho tshwj xeeb radiator customized raws li txoj hauj lwm thiab qhov siab ntawm lub tshuab cua sov ntawm lub PCB board los yog nyob rau hauv ib tug loj ca radiator Txiav tawm qhov siab ntawm cov khoom sib txawv. Fasten lub tshav kub dissipation npog rau qhov chaw tiv thaiv, thiab tiv tauj txhua yam kom dissipate cua sov. Txawm li cas los xij, vim qhov tsis sib xws ntawm cov khoom siv thaum lub sij hawm sib dhos thiab vuam, cov nyhuv kub dissipation tsis zoo. Feem ntau ib qho kev hloov pauv thermal hloov thermal pad yog ntxiv rau ntawm qhov chaw tivthaiv txhawm rau txhim kho cov cua sov dissipation.

2. Thaum tshav kub kub dissipation los ntawm PCB board nws tus kheej
Tam sim no, PCB daim hlau siv dav yog tooj liab-clad / epoxy iav ntaub substrates los yog phenolic resin iav ntaub substrates, thiab ib qho me me ntawm daim ntawv tooj liab-clad phaj yog siv. Txawm hais tias cov substrates no muaj kev ua tau zoo ntawm hluav taws xob thiab kev ua haujlwm, lawv muaj cov cua sov tsis zoo. Raws li txoj kev tshav kub dissipation rau cov khoom siv hluav taws xob siab, PCB nws tus kheej tsis tuaj yeem xav tias yuav ua kom sov los ntawm cov resin ntawm PCB, tab sis kom dissipate cua sov los ntawm qhov chaw ntawm cov khoom mus rau ib puag ncig huab cua. Txawm li cas los xij, raws li cov khoom siv hluav taws xob tau nkag mus rau lub sijhawm ntawm miniaturization ntawm cov khoom siv, kev teeb tsa siab ceev, thiab cov khoom siv hluav taws xob siab, nws tsis txaus rau kev cia siab rau ntawm cov khoom siv nrog thaj tsam me me kom dissipate tshav kub. Nyob rau tib lub sijhawm, vim yog kev siv hnyav ntawm cov khoom siv saum npoo av xws li QFP thiab BGA, cov cua sov tsim los ntawm cov khoom siv tau raug xa mus rau PCB board hauv ntau qhov ntau. Yog li, txoj hauv kev zoo tshaj plaws los daws cov cua sov dissipation yog los txhim kho lub peev xwm ntawm cov cua sov ntawm PCB nws tus kheej hauv kev sib cuag ncaj qha nrog cov cua sov. Coj los yog emit.

3. Txais kev tsim qauv tsim nyog kom ua tiav cov cua sov dissipation
Vim hais tias cov thermal conductivity ntawm cov resin nyob rau hauv daim ntawv yog tsis zoo, thiab cov tooj liab ntawv ci kab thiab qhov yog zoo conductors ntawm tshav kub, kev txhim kho cov tooj liab foil residual tus nqi thiab nce lub thermal conduction qhov yog lub ntsiab txhais ntawm tshav kub dissipation.
Txhawm rau ntsuas qhov muaj peev xwm ntawm cov cua sov ntawm PCB, nws yog ib qho tsim nyog los xam qhov sib npaug thermal conductivity (cua eq) ntawm cov khoom sib xyaw uas muaj ntau yam khoom siv sib txawv thermal conductivity coefficients - insulating substrate rau PCB.

4. Rau cov khoom siv uas siv cov cua txias txias, nws yog qhov zoo tshaj plaws los npaj cov kev sib xyaw ua ke (lossis lwm yam khoom siv) vertically lossis horizontally.

5. Cov khoom siv ntawm tib lub rooj tsavxwm luam tawm yuav tsum tau npaj raws li lawv cov khoom tsim hluav taws xob thiab cov cua sov dissipation kom ntau li ntau tau. Cov cuab yeej siv hluav taws xob me me los yog cov cua sov tsis zoo (xws li cov teeb liab me me transistors, me me integrated circuits, electrolytic capacitors, thiab lwm yam) tau muab tso rau hauv cov kwj dej saum toj kawg nkaus ntawm cov cua txias (ntawm qhov nkag), cov khoom siv hluav taws xob loj los yog Cov cua kub zoo (xws li fais fab transistors, loj-scale integrated circuits, thiab lwm yam) yog muab tso rau hauv feem ntau downstream ntawm cov cua txias.

6. Nyob rau hauv txoj kab rov tav, cov cuab yeej siv hluav taws xob siab yuav tsum tau muab tso rau ze li sai tau rau ntawm ntug ntawm cov ntawv luam tawm kom luv txoj kev hloov tshav kub; nyob rau hauv txoj kab ntsug, cov cuab yeej siv hluav taws xob siab yuav tsum tau muab tso rau ze li sai tau rau saum lub rooj tsavxwm luam ntawv kom txo tau qhov kub ntawm cov khoom siv no thaum ua haujlwm ntawm lwm yam khoom siv cuam tshuam.

7. Cov cuab yeej ntsuas kub zoo tshaj plaws yog muab tso rau hauv qhov chaw uas muaj qhov kub thiab txias (xws li hauv qab ntawm lub cuab yeej). Tsis txhob tso ncaj qha rau saum lub tshuab hluav taws xob tsim hluav taws xob. Ntau yam khoom siv tau zoo dua staggered ntawm lub dav hlau kab rov tav.

8. Lub tshav kub dissipation ntawm cov ntawv luam tawm hauv cov khoom siv feem ntau yog nyob ntawm cov huab cua ntws, yog li txoj kev khiav ntawm huab cua yuav tsum tau kawm hauv kev tsim, thiab cov cuab yeej lossis cov ntawv luam tawm Circuit Board yuav tsum tau teeb tsa kom tsim nyog. Thaum cov huab cua ntws, nws ib txwm nyiam ntws qhov twg qhov kev tiv thaiv me me, yog li thaum teeb tsa cov khoom siv ntawm lub rooj tsav xwm luam tawm, nws yog qhov tsim nyog kom tsis txhob tawm hauv qhov chaw huab cua loj hauv ib cheeb tsam. Kev teeb tsa ntawm ntau lub rooj tsav xwm luam tawm hauv lub tshuab tag nrho yuav tsum tau them sai sai rau tib qho teeb meem.

9. Zam kom tsis txhob muaj qhov kub ntawm qhov kub thiab txias ntawm PCB, faib lub zog sib npaug ntawm PCB kom ntau li ntau tau, thiab ua kom qhov kub thiab txias ntawm PCB nto zoo ib yam. Nws yog ib qho nyuaj rau ua tiav cov kev faib tawm nruj me ntsis hauv cov txheej txheem tsim, tab sis nws yog ib qho tsim nyog yuav tsum tsis txhob muaj cov cheeb tsam uas muaj lub zog loj heev kom tsis txhob muaj qhov kub kub uas cuam tshuam rau kev ua haujlwm ntawm tag nrho cov Circuit Court. Yog tias muaj kev tso cai, kev ntsuas thermal efficiency ntawm cov ntawv luam tawm yog tsim nyog. Piv txwv li, thermal efficiency Performance index tsom xam software modules ntxiv nyob rau hauv ib co kev PCB tsim software yuav pab tau cov tsim optimize Circuit Court tsim.