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Ucwaningo Ngokumelana Okuqondile Kwamanje

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Ngesikhathi sokushaja nokukhipha amabhethri, amandla azothonywa ukugcwala ngokweqile okubangelwa ukumelana kwangaphakathi. Njengepharamitha ebalulekile yebhethri, ukumelana kwangaphakathi kuwufanele ucwaningo ukuze kuhlaziywe ukuwohloka kwebhethri. Ukumelana kwangaphakathi kwebhethri kuqukethe:

  • Ohm ukumelana kwangaphakathi (RΩ) -Ukumelana namathebhu, i-electrolyte, isihlukanisi nezinye izakhi.
  • Ukumelana nokushaja kwangaphakathi kokudlulisela (Rct) -Ukumelana namathebhu adlula ama-ion kanye ne-electrolyte. Lokhu kumelela ubunzima bokusabela kwamathebhu. Ngokujwayelekile singakwazi ukukhulisa i-conductivity ukunciphisa lokhu kumelana.
  • Ukumelana ne-Polarization (Rmt) ukumelana kwangaphakathi okubangelwa ukuminyana okungalingani kwe-lithium ion phakathii-cathodekanye ne-anode. I-Polarization Resistance izoba phezulu ezimeni ezifana nokushaja okuphansiizinga lokushisanoma inkokhiso enesilinganiso esiphezulu.

Ngokujwayelekile sikala i-ACIR noma i-DCIR. I-ACIR ukumelana kwangaphakathi kukalwa ngo-1k Hz AC wamanje. Lokhu kumelana kwangaphakathi kwaziwa nangokuthi ukumelana kwe-Ohm. Iukushodayedatha ukuthi ayikwazi ukukhombisa ngqo ukusebenza kwebhethri. I-DCIR ikalwa ngokuphoqwa okungaguquki kwamandla ngesikhathi esifushane, lapho i-voltage ishintsha njalo. Uma i-current esheshayo ingu-I, futhi ukuguqulwa kwe-voltage kuleso sikhathi esifushaneΔＵ, ngokomthetho we-OhmＲ＝ΔＵ／ＩSingathola i-DCIR. I-DCIR ayikona nje ukumelana ne-Ohm yangaphakathi, kodwa futhi ukumelana nokushaja kokudlulisa kanye nokumelana ne-polarization.

Ukuhlaziywa kwamazinga e-China namanye amazwe

It'Kuhlala kunzima ocwaningweni lwe-DCIR yebhethri ye-lithium-ion. It's ikakhulukazi ngenxa yokuthi ukumelana kwangaphakathi kwebhethri le-lithium-ion kuncane kakhulu, ngokuvamile nje ama-mΩ. Okwamanje njengengxenye esebenzayo, kunzima ukukala ukumelana kwangaphakathi ngokuqondile. Ngaphandle kwalokho, ukumelana kwangaphakathi kuthonywa isimo sendawo, njengezinga lokushisa nesimo sezindleko. Ngezansi kunamazinga ashiwo mayelana nendlela yokuhlola i-DCIR.

  • Izinga lamazwe ngamazwe:

I-IEC 61960-3: 2017:Amaseli esibili namabhethri aqukethe i-alkaline noma amanye ama-electrolyte angewona ama-asidi - Amaseli e-lithium yesibili namabhethri ezinhlelo eziphathwayo - Ingxenye 3: Amaseli e-lithium yesibili namabhethri enziwe ngawo.

I-IEC 62620:2014:Amaseli esibili namabhethri aqukethe i-alkaline noma amanye ama-electrolyte angewona ama-asidi - Amaseli e-lithium yesibili namabhethri azosetshenziswa ezimbonini.

  • Japan:I-JIS C 8715-1:2018: Amaseli e-lithium esibili namabhethri azosetshenziswa ezinhlelweni zemboni - Ingxenye 1: Ukuhlolwa nezimfuneko zokusebenza
  • I-China ayinalo izinga elifanele mayelana nokuhlolwa kwe-DCIR.

Izinhlobonhlobo

 

I-IEC 61960-3:2017

I-IEC 62620:2014

I-JIS C 8715-1:2018

Ububanzi

Ibhethri

Iseli nebhethri

Ukuhlola izinga lokushisa

20℃±5℃

25℃±5℃

Ukwelashwa kwangaphambili

1. Ishajwe ngokugcwele;

2. gcina okungu-1～4ｈ;

1. Ishajwe ngokugcwele, bese ikhipha ifike ku-50±10％ womthamo olinganiselwe;

2. gcina okungu-1～4ｈ;

Indlela yokuhlola

1.0.2C ukukhishwa njalo kwe-10±0.1ｓ;

2. Khipha ngeＩ2＝1.0Ｃ kokungu-1±0.1ｓ;

1. Khipha nge-current elawulwayo ngokuya ngohlobo oluhlukile lwesilinganiso;

2. Izikhathi zokushaja ezi-2 zingu-30±0.1ｓkanye no-5±0.1ｓ ngokulandelana;

Umbandela wokwamukela

Umphumela wokuhlola ngeke ube phezulu kunalokho okushiwo umkhiqizi

Izindlela zokuhlola ziyefana phakathiI-IEC 61960-3:2017,I-IEC 62620:2014futhiI-JIS C 8715-1:2018. Umehluko omkhulu umi kanje:

  1. Amazinga okushisa okuhlola ahlukile. I-IEC 62620:2014 kanyeI-JIS C 8715-1:2018ilawula a 5℃izinga lokushisa eliphakeme kakhulu kune-IEC 61960-3:2017. Ukushisa okuphansi kuzokwenza kube ne-viscosity ephakeme ye-electrolyte, okuzobangela ukunyakaza okuphansi kwama-ion. Ngakho-ke ukusabela kwamakhemikhali kuzohamba kancane, futhi ukumelana ne-Ohm nokumelana ne-polarization kuzoba kukhudlwana, okuzobangela ukuthambekela kokunyuka kwe-DCIR.
  2. I-SoC ihlukile. I-SoC iyadingekaI-IEC 62620:2014futhiI-JIS C 8715-1:2018ngi 50±10％, ngenkathiI-IEC 61960-3:2017kungu-100%. Isimo sokukhokhiswa sinomthelela omkhulu ku-DCIR. Ngokuvamile umphumela wokuhlola we-DCIR uzokwehla ngokunyuka kwe-SoC. Lokhu kuhlobene nenqubo yokusabela. Nge-SoC ephansi,ukumelana nokudlulisa icalaRct kuzoba ngaphezulu; futhiRct izokwehla ngokunyuka kwe-SoC, kanjalo ne-DCIR.
  3. Isikhathi sokukhipha sihlukile. I-IEC 62620:2014 kanye ne-JIS C 8715-1:2018 idinga isikhathi eside sokukhipha kuneI-IEC 61960-3:2017. Isikhathi eside sokushaya kwenhliziyo sizodala ukuthambekela okwandayo okuphansi kwe-DCIR, futhi siveze ukuchezuka emugqeni womugqa. Isizathu siwukuthi ukwanda kwesikhathi sokushaya kwenhliziyo kuzodala ukuphakamaRct futhi ubeobusayo.
  4. Amandla okuphuma ahlukile. Kodwa-ke amandla okukhipha awahlobene ngokuqondile ne-DCIR. Ubudlelwano bunqunywa nguiumklamo.
  5. NokhoI-JIS C 8715-1:2018libhekisela kuI-IEC 62620:2014, anezincazelo ezihlukile kumabhethri anesilinganiso esiphezulu.I-IEC 62620:2014ichaza ukuthi amabhethri anesilinganiso esiphezulu angakhipha okungaphansi kuka-7.0C wamanje.WngenkathiI-JIS C 8715-1:2018ichaza amabhethri anesilinganiso esiphezulu yilawo angaphuma ngo-3.5C.

Ukuhlaziya Ekuhloleni

Ngezansi ishadi lokusebenza lesikhathi se-voltage lesilinganiso sokuhlola i-DCIR. Ijika libonisa ukumelana kwamaseli, ukuze sikwazi ukuhlola ukusebenza.

  • Njengoba kuboniswe esithombeni, imicibisholo ebomvu imeleRΩ. Inani lihlobene ne-iR-drop. I-iR-drop isho ukushintsha okungazelelwe kwamandla kagesi ngemva koshintsho lwamanje. Imvamisa uma iseli lifakwa ugesi, lapho'sa ukwehla kwamandla kagesi. Ngakho-ke singakwazi ukuthi i-RΩ kweseli yi0.49mΩ.
  • Umcibisholo oluhlaza umeleRct. Rct futhiRmt zidinga isikhathi esithile ukuze zisebenze. Ngokuvamile kwenzeka ngemva kokwehla kwe-Ohm Voltage. Inani leRct ingalinganiswa 1ms ngemva koshintsho lwamanje. Inani lithi0.046mΩ. NgokujwayelekileRct izokwehla ngokukhuphuka kwe-SoC.
  • Umcibisholo oluhlaza okwesibhakabhaka umele ushintsho lweRmt. Amandla kagesi alokhu ehla ngenxa yokusabalala kokungalingani kwe-lithium-ion. Inani leRmt is 0.19mΩ 

Isiphetho

Ukuhlolwa kwe-DCIR kungabonisa ukusebenza kwamabhethri. It'futhi iyipharamitha ebalulekile ye-R&D. Nokho kunezinto ezithile okufanele zicatshangelwe ukuze kugcinwe ukunemba kokulinganisa.

  • Indlela yokuxhumana phakathi kwamabhethri kanye nemishini yokushaja neyokukhipha kufanele kubhekwe. Ukumelana nokuxhumeka kufanele kube phansi ngangokunokwenzeka (phakamisa kungabi kukhulu kuno0.02mΩ).
  • Ukuxhumeka kwezintambo ze-voltage kanye nezintambo zamanje zokuqoqa nakho kubalulekile.It kungaba ngcono ukuxhuma ohlangothini olufanayo lwamathebhu. Kufanele kuqashelwe ukuthi ungaxhumi izintambo zokuqoqa ezintanjeni zokushaja zemishini.
  • Ukunemba kwemishini yokushaja neyokukhipha kanye nesikhathi sokuphendula nakho kufanele kucatshangelwe. Isikhathi sokuphendula siphakanyiswa ukuthi singabi ngaphezu kuka-10ms. Isikhathi esifushane sokuphendula, umphumela onembe kakhulu.

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Isikhathi sokuthumela: Feb-01-2023
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