Txheej txheem cej luam ntawm lub zog tshiab tsheb them

Roj teeb tsis

1.1 Roj teeb lub zog

Chav tsev ntawm roj teeb lub zog yog kilowatt-teev (kWh), tseem hu ua "degree". 1kWh txhais tau tias "lub zog siv los ntawm cov khoom siv hluav taws xob nrog lub zog ntawm 1 kilowatt rau ib teev." Kom nkag siab yooj yim, tus account pej xeem no feem ntau siv "degree" los qhia nws. Cov neeg nyeem tsuas yog yuav tsum paub tias nws yog ib chav tsev ntawm hluav taws xob hluav taws xob thiab tsis tas yuav delve rau hauv nws lub ntsiab lus.

[Piv txwv] Lub roj teeb muaj peev xwm ntawm cov tsheb thiab SUVs nrog thaj tsam ntawm 500km yog kwv yees li 60 degrees thiab 70 degrees feem. Tam sim no loj-tsim hluav taws xob hluav taws xob tsheb muaj peev xwm yuav nruab nrog roj teeb nrog lub peev xwm siab tshaj plaws ntawm 150 kwh thiab kev tsav tsheb theoretical txog li 1,000km.

Muaj ib daim ntawv teev npe nrog lub tsheb cov ntaub ntawv nyob rau sab xis pem hauv ntej lub qhov rooj (los yog sab xis rear qhov rooj) ntawm lub zog tshiab. Lub roj teeb degree yog xam los ntawm kev siv qhov ntsuas hluav taws xob × qhov peev xwm / 1000. Cov txiaj ntsig tau suav yuav txawv me ntsis ntawm tus nqi ntawm lub tuam txhab tsheb.

1.2 TSI

SOC yog lub ntsiab lus ntawm "Xeev tus nqi“, uas yog hais txog lub roj teeb lub xeev ntawm tus nqi, uas yog, cov roj teeb uas tseem tshuav, feem ntau qhia raws li feem pua.

1.3 Roj teeb hom

Feem ntau ntawm lub zog tshiab tsheb nyob rau hauv kev ua lag luam siv lithium-ion roj teeb, uas yuav muab faib ua lithium hlau phosphate roj teeb thiab ternary lithium roj teeb.

Ntawm lawv, muaj ob qhov tshwj xeeb tshwm sim ntawm "tsis zoo sib xws" ntawm lithium hlau phosphate roj teeb. Ua ntej, SOC zaub tsis raug: piv txwv li, tus sau tsis ntev los no tau ntsib Xpeng P5, uas siv 50 feeb kom them los ntawm 20% mus rau 99%, thaum them los ntawm 99% mus rau 30 feeb kom ncav cuag 100%, uas yog pom tseeb. teeb meem nrog SOC zaub; Thib ob, lub hwj chim-down ceev tsis sib npaug (tseem tsuas yog tshwm sim thaum them tag nrho): qee lub tsheb tsis muaj kev hloov pauv hauv roj teeb lub neej tom qab tsav tsheb 10km tom qab them tag nrho, thaum qee lub tsheb tsis hloov. Lub roj teeb lub neej poob mus rau 5 km tom qab ob peb kauj ruam xwb. Yog li ntawd, lithium hlau phosphate roj teeb yuav tsum tau them tag nrho ib zaug ib lub lim tiam los kho qhov sib xws ntawm cov hlwb.

Ntawm qhov tsis sib xws, vim yog cov khoom siv, ternary lithium roj teeb tsis haum rau qhov chaw nres tsheb tom qab tau them tag nrho (tab sis lawv tuaj yeem tsav tsheb mus rau tsawg dua 90% tam sim ntawd tom qab them tag nrho).Tsis tas li ntawd, txawm hais tias nws yog lub roj teeb zoo li cas, nws yuav tsum tsis txhob tsav tsheb hauv cov roj teeb qis (SOC <20%), thiab nws yuav tsum tsis txhob them rau qhov chaw huab cua (kub siab tshaj 30 ° C lossis qis dua 0 ° C).

Raws li kev them nqi ceev, txoj kev them nyiaj tuaj yeem muab faib ua kev them nqi ceev thiab them qeeb.

(1)Them ceev

Kev them nqi hluav taws xob ntawm kev them ceev ceev feem ntau yog qhov ua haujlwm ntawm lub tsheb hluav taws xob (feem ntau nyob ib puag ncig 360-400V). Nyob rau hauv lub siab zog ntau yam, tam sim no muaj peev xwm ncav cuag 200-250A, coj mus rau 70-100kW ntawm lub hwj chim. Qee cov qauv nrog them raws li lawv qhov muag khoom tuaj yeem ncav cuag 150kW los ntawm qhov hluav taws xob siab. saum toj no. Feem ntau cov tsheb tuaj yeem them los ntawm 30% mus rau 80% hauv ib nrab teev.

[Piv txwv] Siv lub tsheb nrog lub roj teeb muaj peev xwm ntawm 60 degrees (nrog rau thaj tsam li 500km) ua piv txwv, them ceev ceev (hwj chim 60kW) tuaj yeemthem ib lub roj teebLub neej ntawm 250km hauv ib nrab ib teev (siab zog ntau)