Partager

Étude expérimentale et numérique sur les caractéristiques électriques et thermiques d’une cellule de batterie lithium-ion à forte densité énergétique pour une application sur un véhicule électrique à batterie.

Experimental and numerical study on the electrical and thermal characteristics of high energy density lithium-ion battery cell for application of battery electric vehicle.

Numéro : 210038

Auteurs : HAN U., LEE H.

Résumé

In this paper, the electrical and thermal characteristics of the high-energy density of 100 Ah (over 350 Wh/L) pouch-type lithium-ion battery (LIB) cell are analyzed experimentally. To determine the effects of applying current-rate (c-rate) on its behavior, the battery is charged and discharged in different c-rate ranging from 0.5C to 1.2C. The changes in discharged capacity and heat generation rates of battery cells are examined and its mechanism is analyzed deeply in the view of variations on internal resistance. The battery heat generation is considered with two heat sources, joule and entropic heat. A newly developed inverse calculation method is adopted to derive the entropic coefficient in the function of the state of charge. The heat capacity of the battery cell is determined from the convective cooling experiment of battery cell with aluminum block and the combined heat transfer coefficient to calculate the cooling rates of battery cells is also determined appropriately from the Nusselt number correlation. It is confirmed that the numerical model based on the above methods is well suited as a whole from the experiments. In addition, the cell is discharged in different ambient temperature ranging from -15℃ to 45℃ to find out the temperature effects on LIBs. The decrease of capacity and more heat generation of LIB is found under both low and high ambient temperature. As a result, the optimum operating temperature range is redefined as 25℃-35℃ through analyzing the change of electrical and thermal performances of the battery cells.

Documents disponibles

Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental and numerical study on the electrical and thermal characteristics of high energy density lithium-ion battery cell for application of battery electric vehicle.
  • Identifiant de la fiche : 30028608
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 05/2021
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

Liens


Voir d'autres communications du même compte rendu (184)
Voir le compte rendu de la conférence

Indexation