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Uphando ngoNchaso oluthe ngqo lwangoku

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Ngexesha lokutshaja kunye nokukhutshwa kweebhetri, umthamo uya kuthotyelwa ngokugqithiswa kwe-overvoltage okubangelwa ukuchasana kwangaphakathi. Njengeparameter ebalulekileyo yebhetri, ukuchasana kwangaphakathi kulufanele uphando lokuhlalutya ukuhla kwebhetri. Ukuxhathisa kwangaphakathi kwebhetri kuqulethe:

  • Ohm ukuchasana kwangaphakathi (RΩ) -Ukuxhathisa kwiithebhu, i-electrolyte, isahluli kunye namanye amacandelo.
  • Intlawulo yosasazo lwangaphakathi ukumelana (Rct) -Ukumelana nee-ion ezidlulayo iithebhu kunye ne-electrolyte. Oku kubonisa ubunzima bokusabela kweethebhu. Ngokuqhelekileyo sinokunyusa i-conductivity ukunciphisa le nkcaso.
  • Ukumelana nePolarization (Rmt) kukuchasana kwangaphakathi okubangelwa ubuninzi bokungalingani kwe-lithium ion phakathiicathodekunye ne-anode. I-Polarization Resistance iya kuba phezulu kwiimeko ezinjengokutshaja kwindawo ephantsiubushushuokanye ixabiso eliphezulu.

Ngokuqhelekileyo silinganisa i-ACIR okanye i-DCIR. I-ACIR yinkcaso yangaphakathi elinganiswa kwi-1k Hz AC yangoku. Oku kuxhathisa kwangaphakathi kwaziwa ngokuba yi-Ohm resistance. Iukunqongophalayedatha kukuba ayikwazi ukubonisa ngokuthe ngqo ukusebenza kwebhetri. I-DCIR ilinganiswa ngokunyanzeliswa kwangoku ngokuqhubekayo ngexesha elifutshane, apho i-voltage iguquka ngokuqhubekayo. Ukuba i-current instantaneous i-I, kunye nokutshintshwa kwamandla ombane ngelo xesha elifutshaneΔＵ, ngokomthetho we-OhmＲ＝ΔＵ／ＩSingayifumana i-DCIR. I-DCIR ayisiyiyo kuphela i-Ohm yokuchasana kwangaphakathi, kodwa iphinda ihlawule ukuchasana nokugqithiswa kunye nokuxhathisa i-polarization.

Uhlalutyo lwemigangatho yaseTshayina nakwamanye amazwe

It's kuhlala kunzima kuphando lwe-DCIR yebhetri ye-lithium-ion. Yona's ikakhulu ngenxa yokuba ukuxhathisa lwangaphakathi ibhetri lithium-ion incinci kakhulu, ngokuqhelekileyo nje ezinye mΩ. Okwangoku njengecandelo elisebenzayo, kunzima ukulinganisa ukuchasana kwangaphakathi ngokuthe ngqo. Ngaphandle koko, ukuxhathisa kwangaphakathi kuphenjelelwa yimeko yemo engqongileyo, njengobushushu kunye nobume beentlawulo. Apha ngezantsi kukho imigangatho ekhankanyiweyo malunga nendlela yokuvavanya i-DCIR.

  • Umgangatho wamazwe ngamazwe:

IEC 61960-3: 2017:Iiseli zesibini kunye neebhetri eziqulethe i-alkaline okanye enye i-electrolyte engeyiyo-asidi-Iiseli ze-lithium yesibini kunye neebhetri zezicelo eziphathwayo-Icandelo 3: Iiseli zeprismatic kunye necylindrical lithium yesibini kunye neebhetri ezenziwe kuzo..

IEC 62620:2014:Iiseli zeSekondari kunye neebhetri eziqulethe i-alkaline okanye ezinye ii-electrolyte ezingekho-asidi-Iiseli ze-lithium zeSekondari kunye neebhetri ezisetyenziselwa ukusetyenziswa kwimizi-mveliso.

  • Japhan:I-JIS C 8715-1: 2018: Iiseli ze-lithium yesibini kunye neebhetri ezisetyenziselwa ukusetyenziswa kwimizi-mveliso-Icandelo 1: Uvavanyo kunye neemfuno zokusebenza
  • I-China ayinawo umgangatho ofanelekileyo malunga novavanyo lwe-DCIR.

Iindidi

 

IEC 61960-3:2017

IEC 62620:2014

I-JIS C 8715-1: 2018

Ububanzi

Ibhetri

Iseli kunye nebhetri

Uvavanyo lobushushu

20℃±5℃

25℃±5℃

Unyango lwangaphambili

1. Ichajiwe ngokupheleleyo;

2. ivenkile ye1～4ｈ;

1. Ichajiwe ngokupheleleyo, emva koko ikhuphe ukuya kwi-50％±10％ yomthamo olinganisiweyo;

2. ivenkile ye1～4ｈ;

Indlela yokuvavanya

1.0.2C ukukhutshwa rhoqo kwi-10±0.1ｓ;

2. Khupha ngeＩ2＝1.0Ｃ ye-1±0.1ｓ;

1. Ukukhutshwa ngokulawulwa ngoku ngokuhambelana nohlobo oluthile lomlinganiselo;

2. Amaxesha okutshaja ama-2 yi-30±0.1ｓkunye ne-5±0.1ｓngokulandelelanayo;

Inqobo yokwamkela

Iziphumo zovavanyo aziyi kuba phezulu kunezichazwe ngumenzi

Iindlela zokuvavanya ziyafana phakathiIEC 61960-3:2017,IEC 62620:2014kwayeI-JIS C 8715-1: 2018. Umahluko ophambili umi ngolu hlobo lulandelayo:

  1. Ukuvavanya amaqondo obushushu ahlukile. IEC 62620:2014 kunyeI-JIS C 8715-1: 2018ilawula i-5℃ngaphezulu kobushushu be-ambient kune-IEC 61960-3:2017. Ukushisa okuphantsi kuya kuyenza ibe yi-viscosity ephezulu ye-electrolyte, eya kubangela ukunyakaza okuphantsi kweeyoni. Ngaloo ndlela ukusabela kweekhemikhali kuya kucotha, kwaye ukuxhathisa kwe-Ohm kunye nokumelana ne-polarization kuya kuba kukhulu, okuya kubangela ukunyuka kwe-DCIR.
  2. I-SoC yahlukile. I-SoC ifuna ukungenaIEC 62620:2014kwayeI-JIS C 8715-1: 2018yi 50％±10％, ngelixaIEC 61960-3:2017yi 100%. Ubume bentlawulo bunefuthe elikhulu kwi-DCIR. Ngokwesiqhelo iziphumo zovavanyo lwe-DCIR ziyakwehla ngokunyuka kwe-SoC. Oku kuhambelana nenkqubo yokusabela. Kwi-SoC ephantsi,ukuchasana nokudluliselwa kwentlawuloRct iya kuba phezulu; kwayeRct iya kuncipha ngokunyuka kwe-SoC, njenge-DCIR.
  3. Ixesha lokukhupha lihlukile. I-IEC 62620: 2014 kunye ne-JIS C 8715-1: 2018 idinga ixesha elide lokukhupha kuneIEC 61960-3:2017. Ixesha elide lokubetha kwe-pulse liya kubangela ukunyuka okusezantsi kwe-DCIR, kwaye kubonise ukutenxa kumgca. Isizathu kukuba ukwanda kwexesha le-pulse kuya kubangela ukuphakamaRct kwaye ubeukongamela.
  4. Imisinga yokukhupha iyahluka. Nangona kunjalo ukukhutshwa kombane akuhambelani ngokuthe ngqo ne-DCIR. Unxulumano lumiselwa nguiuyilo.
  5. NangonaI-JIS C 8715-1: 2018ibhekisele kwiIEC 62620:2014, zineenkcazo ezahlukeneyo kwiibhetri eziphezulu.IEC 62620:2014ichaza ukuba iibhetri ezilinganiswe kakhulu zinokukhupha akukho ngaphantsi kwe-7.0C yangoku.WngelixaI-JIS C 8715-1: 2018ichaza iibhetri ezikumgangatho ophezulu zezo zinokukhutshwa nge-3.5C.

Uhlalutyo kuVavanyo

Apha ngezantsi kukho itshati yokusebenza kwexesha lombane lomlinganiselo wovavanyo we-DCIR. Ijika libonisa ukuxhathisa kweeseli, ukuze sikwazi ukuvavanya ukusebenza.

  • Njengoko kubonisiwe emfanekisweni, iintolo ezibomvu zimeleRΩ. Ixabiso linxulumene ne-iR-drop. I-iR-drop ithetha utshintsho olukhawulezileyo lombane emva kotshintsho lwangoku. Ngokuqhelekileyo xa iseli ifakwe umbane, apho'sa ukwehla kwamandla ombane. Ngoko ke sinokwazi ukuba iRΩ yeseli yi0.49mΩ.
  • Utolo oluluhlaza lumeleRct. Rct kwayeRmt kufuneka ixesha elithile ukuze isebenze. Ngokuqhelekileyo kwenzeka emva kokuhla kwe-Ohm Voltage. Ixabiso leRct inokulinganiswa 1ms emva kotshintsho lwangoku. Ixabiso li0.046mΩ. NgokuqhelekileyoRct iya kuncipha ngokunyuswa kwe-SoC.
  • Utolo oluluhlaza lumele utshintsho lweRmt. Amandla ombane ahlala ehla ngenxa yokusasazeka kwe-lithium-ion engalinganiyo. Ixabiso leRmt is 0.19mΩ 

Ukuqukumbela

Uvavanyo lwe-DCIR lunokubonisa ukusebenza kweebhetri. Yona's ikwayiparameter ebalulekileyo yeR&D. Nangona kunjalo kukho imiba ethile ekufuneka iqwalaselwe ukuze kugcinwe ukuchaneka komlinganiselo.

  • Indlela yokudibanisa phakathi kweebhetri kunye nentlawulo kunye nezixhobo zokukhupha kufuneka zithathelwe ingqalelo. Uxhathiso loqhagamshelo kufuneka lube phantsi kangangoko (cebisa ungabi nkulu kuno0.02mΩ).
  • Ukudityaniswa kombane kunye neengcingo zokuqokelela zangoku nazo zibalulekile.It kungangcono ukudibanisa kwicala elinye leethebhu. Kufuneka kuqatshelwe ukuba musa ukudibanisa iingcingo zokuqokelela kwiingcingo zokutshaja zezixhobo.
  • Ukuchaneka kwentlawulo kunye nezixhobo zokukhupha kunye nexesha lokuphendula kufuneka kwakhona kuthathelwe ingqalelo. Ixesha lokuphendula licetyiswa ukuba lingabi ngaphezu kwe-10ms. Lifutshane lexesha lokuphendula, kokukhona ichaneka ngakumbi isiphumo.

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Ixesha lokuposa: Feb-01-2023
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