Mbiri

Pa kulipiritsa ndi kutulutsidwa kwa mabatire, mphamvuyo idzakhudzidwa ndi kuwonjezereka kwa mphamvu chifukwa cha kukana kwa mkati.Monga gawo lofunikira la batri, kukana kwamkati ndikofunikira kufufuza pakuwunika kuwonongeka kwa batri.Mphamvu ya mkati mwa batire ili ndi:

• Ohm internal resistance (R_Ω) -Kukana kwa ma tabo, electrolyte, olekanitsa ndi zigawo zina.
• Malipiro opatsirana mkati kukana (R_ct) -Kukana kwa ayoni akudutsa ma tabo ndi electrolyte.Izi zikuyimira zovuta zamachitidwe a ma tabo.Kawirikawiri tikhoza kuonjezera conductivity kuti tichepetse kukana uku.
• Polarization Resistance (R_mt) ndi kukana kwamkati komwe kumachitika chifukwa cha kusamvana kwa ma lithiamu ayoni pakaticathodendi anode.Polarization Resistance idzakhala yokwera kwambiri ngati kulipiritsa pang'onokutenthakapena mtengo wapamwamba.

Nthawi zambiri timayesa ACIR kapena DCIR.ACIR ndiye kukana kwamkati komwe kuyezedwa mu 1k Hz AC pano.Kukana kwamkati kumeneku kumadziwikanso kuti Ohm resistance.Thekuchepaza deta ndi kuti sangathe kusonyeza mwachindunji ntchito ya batire.DCIR imayesedwa ndi kukakamizidwa kosalekeza munthawi yochepa, momwe magetsi amasinthira mosalekeza.Ngati pompopompo ndi ine, ndipo kusintha kwa voteji munthawi yochepa ndikoΔＵ, malinga ndi lamulo la OhmＲ＝ΔＵ／ＩTitha kupeza DCIR.DCIR sikuti imangokhala kukana kwa Ohm mkati, komanso kukana kusamutsa komanso kukana polarization.

Kusanthula kwa miyezo ya China ndi mayiko ena

It'Nthawi zonse zimakhala zovuta pa kafukufuku wa DCIR wa batri ya lithiamu-ion.Iwo's makamaka chifukwa kukana kwamkati kwa batire ya lithiamu-ion ndi yaying'ono kwambiri, nthawi zambiri imangokhala mΩ.Pakalipano monga gawo logwira ntchito, ndizovuta kuyeza kukana kwamkati mwachindunji.Kupatula apo, kukana kwamkati kumatengera momwe chilengedwe chimakhalira, monga kutentha ndi kuchuluka kwa ndalama.Pansipa pali miyezo yomwe yanena za momwe mungayesere DCIR.

• Muyezo wapadziko lonse lapansi:

IEC 61960-3: 2017:Maselo achiwiri ndi mabatire okhala ndi alkaline kapena ma electrolyte ena omwe si a asidi - Maselo achiwiri a lithiamu ndi mabatire kuti agwiritse ntchito - Gawo 3: Ma cell a prismatic ndi cylindrical lithiamu sekondale ndi mabatire opangidwa kuchokera kwa iwo..

IEC 62620:2014:Maselo achiwiri ndi mabatire okhala ndi alkaline kapena ma electrolyte ena omwe si a asidi - Ma cell a lithiamu achiwiri ndi mabatire omwe amagwiritsidwa ntchito m'mafakitale.

• Japan:JIS C 8715-1: 2018: Maselo achiwiri a lithiamu ndi mabatire omwe amagwiritsidwa ntchito m'mafakitale - Gawo 1: Mayesero ndi zofunikira pakuchita
• China ilibe muyezo woyenera pakuyesa kwa DCIR.

Zosiyanasiyana

Njira zoyesera ndizofanana pakatiIEC 61960-3: 2017,Mtengo wa IEC 62620:2014ndiJIS C 8715-1: 2018.Kusiyanitsa kwakukulu kuli motere:

1. Kutentha koyesa kumasiyana.IEC 62620:2014 ndiJIS C 8715-1: 2018amayendetsa 5℃kutentha kozungulira kwambiri kuposa IEC 61960-3: 2017.Kutentha kwapang'onopang'ono kumapangitsa kuti ma electrolyte akhale apamwamba kwambiri, zomwe zingayambitse kutsika kwa ayoni.Chifukwa chake, kusintha kwamankhwala kumachepa, ndipo kukana kwa Ohm ndi kukana kwa polarization kudzakhala kwakukulu, zomwe zingayambitse kuwonjezeka kwa DCIR.
2. SoC ndi yosiyana.SoC ikufunikaMtengo wa IEC 62620:2014ndiJIS C 8715-1: 2018ndi 50± ±10％, pameneIEC 61960-3: 2017ndi 100%.Mkhalidwe wa chiwongola dzanja ndi wokhudza kwambiri ku DCIR.Nthawi zambiri zotsatira zoyesa za DCIR zimatsika ndikuwonjezeka kwa SoC.Izi zikugwirizana ndi ndondomeko ya zomwe zimachitika.Mu SoC yotsika,kukana kutengerapo ndalamaR_ct adzakhala apamwamba;ndiR_ct idzachepa ndi kuwonjezeka kwa SoC, monganso DCIR.
3. Nthawi yotulutsa ndi yosiyana.IEC 62620: 2014 ndi JIS C 8715-1: 2018 imafuna nthawi yayitali yotulutsa kuposaIEC 61960-3: 2017.Kuthamanga kwa nthawi yayitali kumayambitsa kutsika kwa DCIR, ndikuwonetsa kupatuka kuchokera pamzere.Chifukwa chake ndikuti kuchuluka kwa nthawi ya kugunda kumapangitsa kuti pakhale kuchulukaR_ct ndi kukhalawolamulira.
4. Miyendo yotuluka imasiyanasiyana.Komabe, kutulutsa kwamagetsi sikukhudzana kwenikweni ndi DCIR.Mgwirizano umatsimikiziridwa ndindikupanga.
5. NgakhaleJIS C 8715-1: 2018amanena zaMtengo wa IEC 62620:2014, ali ndi matanthauzo osiyanasiyana pa mabatire okwera kwambiri.Mtengo wa IEC 62620:2014imatanthawuza kuti mabatire okwera kwambiri amatha kutulutsa zosachepera 7.0C zapano.WnthawiJIS C 8715-1: 2018amatanthawuza mabatire okwera kwambiri ndi omwe amatha kutulutsa ndi 3.5C.

Analysis pa Mayeso

Pansipa pali tchati chamagetsi chanthawi yamagetsi cha kuyezetsa kwa DCIR.Mzerewu umasonyeza kukana kwa maselo, kuti tithe kuyesa ntchitoyo.

• Monga momwe chithunzichi chikusonyezera, mivi yofiira imayimiraR_Ω. Mtengowo umagwirizana ndi iR-drop.iR-drop imatanthauza kusintha kwadzidzidzi kwa magetsi pambuyo pa kusintha kwatsopano.Nthawi zambiri selo likakhala ndi magetsi, pamenepo'kutsika kwa voltage.Kotero ife tikhoza kudziwa kutiR_Ω wa cell ndi0.49mΩ.
• Muvi wobiriwira ukuimiraR_ct. R_ct ndiR_mt amafunika nthawi kuti ayambitse.Nthawi zambiri zimachitika pambuyo pakugwa kwa Ohm Voltage.Mtengo waR_ct ikhoza kuyeza 1ms pambuyo pa kusintha kwatsopano.Mtengo ndi0.046mΩ.Nthawi zambiriR_ct idzachepa ndi kukwera kwa SoC.
• Muvi wabuluu umayimira kusintha kwaR_mt. Mphamvu yamagetsi ikucheperachepera chifukwa cha kufalikira kwa lithiamu-ion.Mtengo waR_mt is 0.19mΩ 

Mapeto

Kuyesa kwa DCIR kumatha kuwonetsa magwiridwe antchito a mabatire.Iwo'ndi gawo lofunikira kwambiri la R&D.Komabe pali zinthu zina zomwe ziyenera kuganiziridwa kuti musunge kulondola kwa kuyeza.

• Njira yolumikizirana pakati pa mabatire ndi zida zopangira ndi kutulutsa ziyenera kuganiziridwa.Kukaniza kwa kulumikizana kuyenera kukhala kotsika momwe kungathekere (lingaliro losakulirapo kuposa0.02mΩ).
• Kulumikizana kwa ma voliyumu ndi mawaya osonkhanitsira pano ndikofunikiranso.It zingakhale bwino kulumikiza mbali yomweyo ya tabu.Zindikirani kuti musagwirizane ndi mawaya osonkhanitsa ndi mawaya opangira zida.
• Kulondola kwa zida zolipiritsa ndi kutulutsa komanso nthawi yoyankha ziyeneranso kuganiziridwa.Nthawi yoyankhira imaperekedwa kuti isapitirire 10ms.Kufupika kwa nthawi yoyankha, zotsatira zake zimakhala zolondola kwambiri.