Background

Panguva yekuchaja uye kuburitsa mabhatiri, kugona kuchave kwakakonzerwa nekuwedzeredza kunokonzerwa nekupikiswa kwemukati.Seyakakosha parameter yebhatiri, kuramba kwemukati kwakakodzera kutsvagisa yekuongorora kuparara kwebhatiri.Kupikiswa kwemukati kwebhatiri kune:

• Ohm mukati kuramba (R_Ω) -Kupokana kubva kumatebhu, electrolyte, separator uye zvimwe zvikamu.
• Charge transmission internal resistance (R_ct) -Kupokana kweion passing tabs uye electrolyte.Izvi zvinomiririra kuoma kwemaitiro ematabo.Kazhinji tinogona kuwedzera conductivity kuderedza kupikisa uku.
• Polarization Resistance (R_mt) ndiko kupikisa kwemukati kunokonzerwa nekuwanda kusaenzana kwe lithium ions pakaticathodeuye anode.Polarization Resistance ichave yakakwirira mumamiriro ezvinhu senge kuchaja mune yakadereratembirichakana kuti high rated charge.

Kazhinji tinoyera ACIR kana DCIR.ACIR ndiko kupikisa kwemukati kuyerwa mu1k Hz AC ikozvino.Uku kupikisa kwemukati kunozivikanwawo seOhm resistance.Thekushomekayedata ndeyekuti haigone kuratidza zvakananga kuita kwebhatiri.DCIR inoyerwa nekumanikidzirwa nguva dzese munguva pfupi, umo voltage inoramba ichichinja.Kana iyo pakarepo ikozvino ndiri ini, uye shanduko yemagetsi mune iyo nguva pfupi ndeyeΔＵ, maererano neOm mutemoＲ＝ΔＵ／ＩTinogona kuwana iyo DCIR.DCIR haisi yeOm chete yemukati kuramba, asiwo kuchaja kutamisa kuramba uye polarization kuramba.

Ongororo yezviyero zveChina nedzimwe nyika

It's inogara ichinetsa pakutsvaga kweDCIR yerithium-ion bhatiri.It's kunyanya nekuti kupikisa kwemukati kwerithium-ion bhatiri idiki kwazvo, kazhinji ingori mamwe mΩ.Zvichakadaro sechikamu chinoshanda, zvakaoma kuyera kupikisa kwemukati zvakananga.Kunze kwezvo, kupikisa kwemukati kunokonzerwa nemamiriro ekunze, senge tembiricha uye mamiriro ekuchaja.Pazasi pane zviyero zvataurwa nezve nzira yekuyedza DCIR.

• International standard:

IEC 61960-3: 2017:Sekondari maseru nemabhatiri ane alkaline kana mamwe asiri-asidhi electrolytes - Sekondari lithium masero uye mabhatiri ezvinotakurika maapplication - Chikamu 3: Prismatic uye cylindrical lithium yechipiri maseru nemabhatiri akagadzirwa kubva kwavari..

IEC 62620:2014:Sekondari maseru nemabhatiri ane alkaline kana mamwe asiri-asidhi electrolytes - Sekondari lithium masero uye mabhatiri ekushandiswa mumaindasitiri ekushandisa..

• Japani:JIS C 8715-1:2018: Sekondari lithium maseru uye mabhatiri ekushandiswa mumaindasitiri ekushandisa - Chikamu 1: Miedzo uye zvinodiwa zvekuita
• China haina chiyero chakakodzera nezve DCIR kuyedzwa.

Varieties

Nzira dzekuyedza dzakafanana pakatiIEC 61960-3:2017,IEC 62620:2014uyeJIS C 8715-1:2018.Misiyano mikuru ndeyekutevera:

1. Kuyedza tembiricha dzakasiyana.IEC 62620:2014 uyeJIS C 8715-1:2018inogadzirisa a5℃yakakwirira ye ambient tembiricha kupfuura IEC 61960-3:2017.Kudzikira tembiricha kunoita kuti ive yakakwirira viscosity ye electrolyte, izvo zvinokonzeresa kufamba kwakadzika kwemaion.Saka kemikari ichaita zvishoma nezvishoma, uye Ohm kuramba uye polarization kuramba ichave yakakura, izvo zvichaita kuti muitiro weDCIR uwedzere.
2. SoC yakasiyana.Iyo SoC inoda mukatiIEC 62620:2014uyeJIS C 8715-1:2018i50±10％, apoIEC 61960-3:2017iri 100%.Mamiriro ekubhadharisa ane simba zvakanyanya kuDCIR.Kazhinji DCIR yekuyedza mhedzisiro inodzikira nekuwedzera kweSoC.Izvi zvinoenderana nemaitiro ekuita.Mune yakaderera SoC,iyo charge transfer kurambaR_ct zvichava zvakakwirira;uyeR_ct ichaderera nekuwedzera kweSoC, senge DCIR.
3. Nguva yekubuda yakasiyana.IEC 62620: 2014 uye JIS C 8715-1: 2018 inoda nguva yakareba yekubuda kupfuuraIEC 61960-3:2017.Iyo yakareba pulse nguva ichakonzera yakaderera kuwedzera maitiro eDCIR, uye kuratidza kutsauka kubva mumutsara.Chikonzero ndechekuti kuwedzera kwenguva yepulse kunokonzera kukwiriraR_ct uye kuvadominant.
4. Kubuda kwemvura kwakasiyana.Nekudaro iyo yekuburitsa ikozvino haifanire kuenderana zvakananga neDCIR.Hukama hunotsanangurwa nethedesign.
5. NyangweJIS C 8715-1:2018zvinorevaIEC 62620:2014, vane tsananguro dzakasiyana pamabhatiri ane mwero wepamusoro.IEC 62620:2014inotsanangura kuti mabhatiri akayerwa akakwira anogona kuburitsa zvisingasviki 7.0C yemazuva ano.WukuJIS C 8715-1:2018inotsanangura mabhatiri ane mwero wepamusoro ndeaya anogona kubuda ne3.5C.

Analysis on Testing

Pazasi pane voltage-nguva basa chati yeDCIR yekuyedza chiyero.Iyo curve inoratidza kuramba kwemasero, kuitira kuti tikwanise kuongorora mashandiro.

• Sezvinoratidzwa pamufananidzo, miseve mitsvuku inomiririraR_Ω. Kukosha kwakabatana ne iR-drop.iR-drop inoreva kushanduka kamwe kamwe kwemagetsi mushure mekuchinja kwazvino.Kazhinji kana sero raiswa magetsi, ipapo'sa drop of voltage.Naizvozvo tinogona kuziva kutiR_Ω kwesero ndiko0.49mΩ.
• Museve wegirini unomiririraR_ct. R_ct uyeR_mt vanoda imwe nguva kuti activate.Kazhinji zvinoitika mushure mekudonha kweOm Voltage.Kukosha kweR_ct inogona kuyerwa 1ms mushure mekuchinja kwazvino.Kukosha ndiko0.046mΩ.KazhinjiR_ct ichaderera nekusimudzwa kweSoC.
• Museve webhuruu unomiririra shanduko yeR_mt. Iyo voltage inoramba ichidzikira nekuda kwe lithium-ion isina kupararira kupararira.Kukosha kweR_mt is 0.19mΩ 

Mhedziso

DCIR bvunzo inogona kuratidza kushanda kwemabhatiri.It's zvakare yakakosha parameter yeR&D.Zvakadaro pane dzimwe nyaya dzinofanirwa kutariswa kuitira kuchengetedza kurongeka kwekuyera.

• Nzira yekubatanidza pakati pemabhatiri nechaji uye yekuburitsa michina inofanirwa kutariswa.Iko kupikisa kwekubatanidza kunofanira kunge kwakaderera sezvinobvira (kurudzira kwete kukura kupfuura0.02mΩ).
• Kubatana kwemagetsi uye ikozvino kuunganidza waya kwakakosha zvakare.It zvingave nani kubatana mudivi rimwe chete rematebhu.Izvo zvinofanirwa kucherechedzwa kuti usabatanidza kuunganidza waya kune waya yekuchaja yemidziyo.
• Kurongeka kwechaji uye midziyo yekuburitsa uye nguva yekupindura inofanirawo kutariswa.Nguva yekupindura inokurudzirwa kuti isapfuure 10ms.Iyo ipfupi yenguva yekupindura, ndiyo yakanyanya kurongeka yemhedzisiro.