Ka morao
Nakong ea ho tjhaja le ho ntša libeteri, matla a tla susumetsoa ke overvoltage e bakoang ke ho hanyetsa ka hare.E le paramente ea bohlokoa ea betri, ho hanyetsa ka hare ho bohlokoa ho etsa lipatlisiso bakeng sa ho hlahloba ho senyeha ha betri.Ho hanyetsa ka hare ho betri ho na le:
- Ohm ho hanyetsa ka hare (RΩ) -Ho hanyetsa ho tsoa ho li-tab, electrolyte, separator le likarolo tse ling.
- Ho hanyetsa ka hare ho phetiso ea litefiso (Rct) -Ho hanyetsa ha li-ion ho feta li-tab le electrolyte.Sena se emela bothata ba karabelo ea li-tab.Ka tloaelo re ka eketsa conductivity ho fokotsa khanyetso ena.
- Polarization Resistance (Rmt) ke ho hanyetsa ka hare ho bakoang ke ho se leka-lekane ha lithium ions pakeng tsacathodele anode.Polarization Resistance e tla ba holimo maemong a kang ho tjhaja ka tlasemochesokapa tefiso e phahameng haholo.
Ka tloaelo re lekanya ACIR kapa DCIR.ACIR ke khanyetso e ka hare e lekantsoeng ka 1k Hz AC hona joale.Khanyetso ena ea ka hare e boetse e tsejoa e le Ohm resistance.Thekhaelloya data ke hore e ke ke ka ho toba bontša tshebetso ya betri.DCIR e lekantsoe ka motlakase o qobelloang ka nako e khuts'oane, moo motlakase o lulang o fetoha.Haeba hona joale hang-hang ke I, 'me phetoho ea motlakase ka nako e khutšoanyane keΔＵ, ho ea ka molao oa OhmＲ＝ΔＵ／ＩRe ka fumana DCIR.DCIR ha e bue ka ho hanyetsa ka hare ho Ohm feela, empa hape le ho hanyetsa phetiso ea tefiso le ho hanyetsa polarization.
Tlhahlobo ea maemo a China le linaha tse ling
It'Kamehla ho thata ho etsa lipatlisiso tsa DCIR ea betri ea lithium-ion.Eona's haholo hobane khanyetso ea kahare ea betri ea lithium-ion e nyane haholo, hangata ke mΩ.Ho sa le joalo e le karolo e sebetsang, ho thata ho lekanya ho hanyetsa ka hare ka ho toba.Ntle ho moo, ho hanyetsa ka hare ho susumetsoa ke boemo ba tikoloho, joalo ka mocheso le maemo a litefiso.Ka tlase ke litekanyetso tse boletsoeng mabapi le mokhoa oa ho leka DCIR.
- Maemo a machaba:
IEC 61960-3: 2017:Lisele tsa bobeli le libeteri tse nang le alkaline kapa li-electrolyte tse ling tse se nang acid - Lisele tsa bobeli tsa lithium le libeteri bakeng sa lits'ebetso tse nkehang - Karolo ea 3: Lisele tsa prismatic le cylindrical lithium le libeteri tse entsoeng ka tsona..
IEC 62620:2014:Lisele tsa bobeli le libeteri tse nang le alkaline kapa li-electrolyte tse ling tse seng acid - Lisele tsa lithium tsa bobeli le libeteri tse sebelisoang lits'ebetsong tsa indasteri..
- Japane:JIS C 8715-1:2018: Lisele tsa bobeli tsa lithium le libeteri tse sebelisoang lits'ebetsong tsa indasteri - Karolo ea 1: Liteko le litlhoko tsa ts'ebetso
- China ha e na maemo a nepahetseng mabapi le tlhahlobo ea DCIR.
Mefuta e sa tšoaneng
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| IEC 61960-3:2017 | Tlhaloso: IEC 62620:2014 | JIS C 8715-1:2018 |
| Bophara | Betri | Sele le betri | |
| Teko ea mocheso | 20℃±5℃ | 25℃±5℃ | |
| Phekolo esale pele | 1. E qosoa ka ho feletseng; 2. lebenkele bakeng sa 1～4ｈ; | 1. E qosoa ka botlalo, ebe e tsoa ho 50％±10％ ea matla a lekantsoeng; 2. lebenkele bakeng sa 1～4ｈ; | |
| Mokhoa oa teko | 1.0.2C ho tsoa kamehla bakeng sa 10±0.1ｓ; 2. Hlakola kaＩ2＝1.0Ｃ bakeng sa 1±0.1ｓ; | 1. Hlakola ka hona joale e laoloang ho latela mofuta o fapaneng oa sekhahla; 2. Linako tse 2 tsa ho tjhaja ke 30±0.1ｓle 5±0.1ｓ ka ho latellana; | |
| Boemo ba ho amohela | Sephetho sa tlhahlobo se ke ke sa ba holimo ho feta se boletsoeng ke moetsi | ||
Mekhoa ea ho hlahloba e tšoana har'aIEC 61960-3:2017,Tlhaloso: IEC 62620:2014leJIS C 8715-1:2018.Likhetho tse kholo ke tse latelang:
- Lithempereichara tsa teko li fapane.IEC 62620: 2014 leJIS C 8715-1:2018e laola 5℃mocheso o phahameng oa tikoloho ho feta IEC 61960-3:2017.Mocheso o tlase o tla etsa hore ho be le viscosity e phahameng ea electrolyte, e leng ho tla etsa hore ho be le motsamao o tlase oa li-ion.Kahoo ts'ebetso ea lik'hemik'hale e tla lieha, 'me ho hanyetsa Ohm le ho hanyetsa polarization ho tla ba kholoanyane, e leng ho tla etsa hore mokhoa oa DCIR o eketsehe.
- SoC e fapane.SoC e ne e hloka ho kenaTlhaloso: IEC 62620:2014leJIS C 8715-1:2018ke 50±10％, haIEC 61960-3:2017ke 100%.Boemo ba tefiso bo na le tšusumetso e kholo ho DCIR.Ka tloaelo sephetho sa tlhahlobo ea DCIR se tla theoha ka keketseho ea SoC.Sena se amana le mokhoa oa ho itšoara.Ka SoC e tlase,kganyetso ya phetiso ya tefisoRct e tla ba holimo;leRct e tla fokotseha ka keketseho ea SoC, joalo ka DCIR.
- Nako ea ho tsoa e fapane.IEC 62620: 2014 le JIS C 8715-1: 2018 e hloka nako e telele ea ho tsoa ho fetaIEC 61960-3:2017.Nako e telele ea ho otla ha pelo e tla baka mokhoa o tlase o ntseng o eketseha oa DCIR, 'me o hlahise ho kheloha ho tloha molaetseng.Lebaka ke hore ho eketseha ha nako ea pulse ho tla baka ho phahamaRct mme ebae laolang.
- Maqhubu a ho ntša metsi a fapane.Leha ho le joalo, motlakase oa motlakase ha o amane ka ho toba le DCIR.Kamano e khethoa kethemoralo.
- Leha ho le joaloJIS C 8715-1:2018e bua kaTlhaloso: IEC 62620:2014, li na le litlhaloso tse fapaneng holim'a libeteri tse nang le litekanyetso tse phahameng.Tlhaloso: IEC 62620:2014e hlalosa hore li-betri tse lekantsoeng holimo li ka ntša ka tlase ho 7.0C ea hajoale.WhileJIS C 8715-1:2018e hlalosang libeteri tse lekantsoeng holimo ke tse ka ntšang ka 3.5C.
Analysis on Testing
Ka tlase ke chate ea ts'ebetso ea nako ea motlakase ea tekanyo ea tlhahlobo ea DCIR.Mokokotlo o bontša ho hanyetsa ha lisele, e le hore re ka hlahloba ts'ebetso.
- Joalokaha ho bontšitsoe setšoantšong, metsu e khubelu e emelaRΩ. Theko e amana le iR-drop.iR-drop e bolela phetoho ea tšohanyetso ea motlakase ka mor'a phetoho ea hona joale.Ka tloaelo ha sele e kentsoe motlakase, moo'ho theoha ha voltage.Ka hona re ka tseba horeRΩ ea sele e0.49mΩ.
- Motsu o motala o emetseRct. Rct leRmt hloka nako e itseng ho kenya tshebetsong.Hangata sena se etsahala ka mor'a ho theoha ha Ohm Voltage.Boleng baRct e ka lekanyetsoa 1ms ka mor'a phetoho ea hona joale.Boleng ke0.046mΩ.Ka tloaeloRct e tla fokotseha ka ho phahama ha SoC.
- Motsu o moputsoa o emela phetoho eaRmt. Motlakase o lula o fokotseha ka lebaka la ho se lekane ha lithium-ion.Boleng baRmt is 0.19mΩ
Qetello
Teko ea DCIR e ka bonts'a ts'ebetso ea libeteri.Eona'Hape ke paramente ea bohlokoa bakeng sa R&D.Leha ho le joalo ho na le lintlha tse ling tse lokelang ho nahanoa e le ho boloka ho nepahala ha tekanyo.
- Tsela ea ho hokahanya pakeng tsa libeteri le thepa ea ho tjhaja le ea ho ntša e lokela ho nkoa.Khanyetsano ea khokahano e lokela ho ba tlase kamoo ho ka khonehang ( sisinya e se kholo ho feta0.02mΩ).
- Khokahano ea lithapo tsa motlakase le tsa hona joale tsa pokello e bohlokoa hape.It ho ka ba molemo ho hokahanya ka lehlakoreng le le leng la li-tab.Ho lokela ho hlokomeloa hore u se ke ua kopanya lithapo tsa pokello ho lithapo tsa ho tjhaja tsa thepa.
- Ho nepahala ha lisebelisoa tsa tefiso le ho lahla le nako ea karabelo le tsona li lokela ho nahanoa.Nako ea karabo ha e khothalletsoe ho feta 10ms.Nako e khuts'oane ea karabo, sephetho se nepahetse haholoanyane.
Nako ea poso: Feb-01-2023