Battery Pack Protection Systems: Lawv Ua Li Cas?

Cov roj teeb lithium ntim lub zog txhua yam los ntawm e- tsheb kauj vab thiab cov cuab yeej hluav taws xob mus rau lub zog cia. Txawm li cas los xij, chemistry hauv cov hlwb no ua rau lawv nkag siab. Push voltage siab dhau lawm, ntws lawv tsawg dhau, lossis cia tam sim no spikes, thiab koj yuav muaj kev puas tsuaj mus tas li lossis, qhov phem tshaj plaws,thermal khiav.

Roj teeb pob tiv thaiv systemszaum ntawm lub hlwb thiab lub ntiaj teb sab nraud. Lawv saib xyuas qhov tseem ceeb ntawm lub sijhawm tiag tiag thiab txiav tawm lub zog thaum cov khoom txav mus rau sab nraud qhov kev txwv tsis pub dhau. NtawmGEB, peb tsim cov tshuab no rau hauv txhua pob peb tsim vim tias cov txheej txheem tiv thaiv zoo yog qhov hloov pauv ntawm cov cell mus rau hauv cov khoom lag luam txhim khu kev qha uas cov neeg siv khoom tuaj yeem ntseeg tau ntau xyoo.

Muaj ob txoj hauv kev: qhov yooj yim duaKev tiv thaiv Circuit Court Module (PCM)thiab muaj peev xwm ntau duaBattery Management System (BMS). Kev nkag siab tias txhua qhov ua haujlwm pab tau li cas thaum koj xaiv lossis qhia txog pob.

Dab tsi yog Roj Teeb Kev Tiv Thaiv Systems?

Lub roj teeb tiv thaiv kab ke yog ib qho hluav taws xob teeb uas txuas ntxiv saib qhov hluav taws xob, tam sim no, thiab qhov kub thiab txias, tom qab ntawd ua haujlwmntawm kom khaws cov pob hauv nws qhov chaw ua haujlwm nyab xeeb (SOA).

• PCM (Kev tiv thaiv Circuit Court Module)yog qhov yooj yim version. Nws yog qhov tseem ceeb ntawm kev tiv thaiv pawg thawj coj ua nyob ib puag ncig ib lossis ob qho kev tiv thaiv ICs thiabMOSFETs. Nws txoj hauj lwm yog ncaj nraim: txheeb xyuas cov xwm txheej txaus ntshai thiab txiav tawm lub voj voog. Feem ntau me me 1S rau 4S pob sivPCMvim nws yog compact thiab tsawg - nqi.
• BMS (Battery Management System)mus ntxiv. Xav tias nws yog lub hlwb ntawm pob. Nws siv ntau lub sensors, microcontroller, thiab software los saib xyuas txhua lub xov tooj ntawm tes, suavLub Xeev Tus Nqi (SOC)thiabLub Xeev Kev Noj Qab Haus Huv (SOH), tshuav cov hlwb, thiab feem ntau sib txuas lus nrog tus tswv cuab ntawm CAN, UART, lossis Bluetooth.

Ntawm no yog ib sab meej-los ntawm- sab saib seb lawv txawv li cas hauv kev xyaum:

PCM muab kev tiv thaiv tseem ceeb rau koj yam tsis muaj qhov nyuaj ntxiv.BMSmuab lub neej ntev dua, kev ua tau zoo dua, thiab qhov system- theem kev sib koom ua ke thaum koj daim ntawv thov xav tau.

Cov Txheej Txheem Kev Tiv Thaiv Roj Teeb Ua Haujlwm Li Cas

Cov txheej txheem tseem ceeb yog tib yam txawm tias koj siv PCM lossis BMS: saib → txiav txim siab → ua → rov qab.

Sensors (los yog kev tiv thaiv IC hauv PCM yooj yim) tas li ntsuas qhov hluav taws xob hla lub hlwb, tam sim no ntws los yog tawm, thiab kub ntawm cov ntsiab lus tseem ceeb. Lub logic tswj sib piv cov kev nyeem ntawv no tiv thaiv preset thresholds. Thaum tus nqi hla ib qho kev txwv, lub kaw lus kaw lub MOSFET keyboards kom tawg lub voj voog. Thaum qhov xwm txheej tau pom tseeb (piv txwv li, koj pib them ib qhotshaj - pob khoom tawm), qhov system reconnects.

Hauv PCM ib txwm siv qee yam xws li DW01+ IC ua ke nrog 8205A MOSFETs:

• Kev ua haujlwm li qub (cell voltage kwv yees li 2.5 V - 4.3 V): IC khaws cov MOSFETs rau, yog li tam sim no ntws dawb.
• Thaum qhov hluav taws xob poob qis dhau thaum tawm mus, IC txiav txoj kev tawm.
• Thaum voltage nce siab dhau thaum them nqi, nws txiav txoj kev them nqi.
• Overcurrent lossis luv Circuit Court raug kuaj pom los ntawm qhov me me ntawm -kev tiv thaiv ntawm MOSFETs lawv tus kheej - tam sim ntawd qhov hluav taws xob poob hla lawv cov teeb liab ntau dhau tam sim no thiab ua rau kaw.

BMS tag nrho ntxiv cov khaubncaws sab nraud povtseg ntawm qhov no. Nws sau cov ntaub ntawv los ntawm ntau lub sensors, khiav algorithms hauv nws lub microcontroller, thiab tuaj yeem txiav txim siab zoo dua xws li txo cov nqi tam sim no es tsis txhob txiav tawm nyuaj lossis nquag txav zog ntawm cov hlwb kom lawv sib npaug.

Qhov tshwm sim yog tib yam nyob rau hauv ob qho tib si: lub pob nyob rau hauv kev nyab xeeb voltage, tam sim no, thiab kub qhov rais kom cov chemistry nyob rau hauv lub hlwb tsis degrade sai los yog khiav tawm.

Kev Tiv Thaiv Tseem Ceeb tau piav qhia

Nov yog cov kev tiv thaiv tseem ceeb uas koj yuav ntsib thiab vim li cas lawv tseem ceeb.

Kev tiv thaiv overcharge

Yog hais tias lub cell voltage nce siab tshaj nws qhov kev nyab xeeb siab tshaj plaws (feem ntau nyob ib ncig ntawm 4.2 V - 4.25 V rau feem ntau NMC lossis LCO hlwb), qhov kev tiv thaiv Circuit Court disconnects txoj kev them nyiaj. Txuas ntxiv overcharges lov cov electrolyte, ua kom sov, thiab tuaj yeem pibthermal khiav. Cov txheej txheem zoo suav nrog qhov pib rov qab qis dua me ntsis kom them rov qab tuaj yeem rov pib dua thaum qhov hluav taws xob poob.

Tshaj -Kev tiv thaiv tawm

Tshem tawm hauv qab li ntawm 2.5 V - 3.0 V ntawm ib lub xov tooj ua rau tooj liab dissolution ntawm lub anode thiab tsis muaj peev xwm mus tas li. Lub kaw lus tiv thaiv txiav tawm tam sim no ua ntej qhov hluav taws xob ntog deb. Ntau pob khoom tso cai rov qab tau txais thaum lub charger txuas nrog thiab nqa qhov hluav taws xob rov qab rau hauv ntau yam.

Overcurrent thiab luv Circuit Court tiv thaiv

High tam sim no generates tshav kub thiab stresses lub hlwb.PCMthiab BMS ob qho tib si saib xyuas tam sim no, feem ntau siv qhov hluav taws xob poob thoob plaws MOSFETs. Ib qho luv luv Circuit Court tsuas yog ib qho kev tshaj tawm ntawm overcurrent - lub cev ua haujlwm hauv milliseconds los tiv thaiv kev puas tsuaj lossis hluav taws.

Kub thiab Thermal Management

Qhov kub thiab txias yog qhov tseem ceeb. Feem ntau cov lithium hlwb ua tau zoo tshaj plaws ntawm 15℃thiab 35 degree. Tshaj li qhov ntau, tshwj xeeb tshaj yog thaum lub sij hawm ceev ceev lossis hnyav tawm, cua sov ua kom sai. BMS units saib xyuas qhov kub ntawm ntau lub ntsiab lus thiab tuaj yeem cuam tshuam tam sim no lossis kaw tag nrho. Nyob rau hauv siab dua - pob fais fab peb kuj ntxiv cov kev ntsuas passive xws li thermal barriers ntawm cov hlwb los yog active cooling paths.

Cell Balancing

Hauv ib lub pob nrog ntau lub hlwb hauv koob, qhov sib txawv me me hauv lub peev xwm ua rau qee lub hlwb mus txog tag nrho lossis khoob sai dua lwm tus. Yog tias tsis muaj qhov sib npaug, koj poob peev xwm siv tau thiab muaj kev pheej hmoo ntau dua - kev ntxhov siab rau ib leeg. BasicPCMtsis tshua muaj nuj nqis. BMS tsim nyog ua haujlwm lossis ua ntu zus hloov lub zog kom txhua lub hlwb nyob sib ze, uas ncaj qha txhim kho lub voj voog lub neej thiab kev nyab xeeb.

Cov haujlwm no ua haujlwm ua ke. Ib pob uas tsuas muaj kev tiv thaiv hluav taws xob tab sis tsis quav ntsej qhov kub thiab txias tseem yog qhov tsis zoo. Ntawm GEB peb tsim cov txheej txheem tiv thaiv raws li kev ua tiav tag nrho tsis yog cov yam ntxwv sib cais.

PCM vs BMS: Xaiv Txoj Kev Zoo

Rau ntau yam tsawg- fais fab lossis nqi- tej yaam num rhiab heev, lub qhov dej - tsim PCM yog txaus. Nws tswj hwm plaub qhov kev tiv thaiv tseem ceeb (overcharge, tshaj- tawm, overcurrent, luv Circuit Court) ntseeg tau thiab khaws cov pob me me thiab pheej yig.

Txav mus rau BMS thaum koj daim ntawv thov xav tau ib qho ntawm cov hauv qab no:

• Lub neej voj voog ntev duacell balancing
• Cov ntaub ntawv SOC raug rau tus neeg siv lossis lub kaw lus
• Kev sib txuas lus nrog cov chargers, inverter, lossis cov tswj tsheb
• Kev ua haujlwm nyob rau hauv qhov chaw sib txawv lossis hnyav hnyav
• Kev nyab xeeb siab dua rau cov pob khoom loj dua

Peb pom qhov kev xaiv no ua si tawm txhua lub lim tiam nrog cov neeg siv khoom. Tus tsim khoom siv portable feem ntau nyob nrog PCM. Ib qho e- tsheb kauj vab lossis hnub ci qhov project yuav luag ib txwm txav mus rau BMS vim tias qhov kev soj ntsuam ntxiv thiab ntsuas nyiaj them rov qab sai sai hauv qhov tseeb-kev ua haujlwm hauv ntiaj teb thiab muaj teeb meem tsawg dua.

Vim li cas Kev Tiv Thaiv Muaj Zog Tseem Ceeb rau Koj Lub Pob Roj Teeb

Ib pob khoom tiv thaiv zoo siv sijhawm ntev dua, ua haujlwm zoo ib yam, thiab ua rau muaj kev mob taub hau tsawg dua hauv qab. Nws txo qhov kev ua tsis tiav, ua kom yooj yim cov ntawv pov thawj, thiab muab koj cov neeg siv khoom kawg kev ntseeg siab tias cov khoom yuav tsis cia lawv poob rau lub sijhawm tseem ceeb.

NtawmGEB peb kho kev tiv thaiv tsis yog ib qho ntxiv- rau tab sis yog ib feem tseem ceeb ntawm pob tsim. Seb peb siv lub compactPCMrau lub roj teeb lub cuab yeej compact lossis puv - tshwj xeebBMSnrogCAN kev sib txuas lusrau lub zog khaws cia, lub hom phiaj tseem nyob ib yam: ua kom cov hlwb ua haujlwm zoo hauv lawv cov kev txwv tsim kom ntau li ntau tau.

Thaum kawg

Roj teeb pob tiv thaiv kab ke - seb puas yooj yim PCM lossis siab heevBMS- yog dab tsi hloov cov lithium roj ntsha mus rau hauv cov khoom muaj kev nyab xeeb, siv tau. Lawv saib xyuas qhov voltage, tam sim no, thiab qhov kub thiab txias, tom qab ntawd ua sai sai thaum cov kev txwv ze ze. Kev nkag siab txog cov txheej txheem no yuav pab koj txheeb xyuas cov kev daws teeb meem zoo rau koj daim ntawv thov thiab zam cov teeb meem uas ua rau lub roj teeb luv luv lossis tsim kev nyab xeeb.

Yog tias koj tab tom tsim cov khoom tshiab lossis nrhiav kev txhim kho qhov uas twb muaj lawmroj teeb pob, xav tias dawb mus cuag. Ntawm GEB peb tsim thiab tsim ob qho tib siPCM{0}} tiv thaivthiabBMS{0}} tau nruablithium roj teeb packs haum rau txawv zog theem, ib puag ncig, thiab kev ua haujlwm xav tau. Qhia rau peb koj cov kev xav tau thiab peb tuaj yeem pom zoo rau txoj hauv kev tiv thaiv uas haum tshaj plaws.