Précédent
Suivant
Brevet : EP3447838 - BATTERIE LITHIUM-PHOSPHATE DE FER
Titre
BATTERIE LITHIUM-PHOSPHATE DE FER
N° et date de publication de la demande
EP3447838 - 27/02/2019
Type de la demande
A1
N° et date de dépôt
EP17784825.6 - 24/08/2017
N° et date de priorité
CN201710486002 - 23/06/2017
Classification CIB
Classification CPC
H01M 10/0525 ; H01M 10/0566 ; H01M 10/0567 ; H01M 4/5825 ; H01M 4/583 ; H01M 10/0525 ; H01M 10/0567 ; Y02E 60/10 ; H01M 4/5825 ; H01M 10/0525 ; H01M 10/0567 ; H01M 10/0569 ; H01M2004/028 ; H01M2300/0037
Famille de brevets
WO2018232979A1 ; US2020020980A1 ; CN109119686A ; EP3447838A1
Abrégé
The present application provides a lithium iron phosphate battery. The lithium iron phosphate battery comprises: positive electrode plate comprising a positive current collector and a positive electrode film provided on the surface of the positive current collector; a negative electrode plate comprising a negative current collector and a negative electrode film provided on the surface of the negative current collector; a separator provided between the positive electrode plate and the negative electrode plate; and an electrolyte comprising an organic solvent, a lithium salt and an electrolyte additive. The electrolyte additive comprises a cyclic carbonate containing a double bond and a cyclic disulfonate represented by formula I. In formula I, A and B are each independently selected from an alkylene group having 1 to 3 carbon atoms. The disclosure can solve the problem that an electrode plate with high press density has poor wettability in the electrolyte, so that a low temperature electrochemical performance and a cycling electro chemical performance at normal temperature and high temperature of the lithium iron phosphate battery are improved, and the service life of the lithium iron phosphate battery is prolonged effectively.
INTERVENANTS
Déposant
Contemporary Amperex Technology Co., Limited - No. 1, Xingang Road, Zhangwan Town Jiaocheng DistrictNingde CityFujian 352100 - CN
Titulaire
Contemporary Amperex Technology Co., Limited - No.2 Xin'gang Road, Zhangwan Town Jiaocheng District Ningde City Fujian 352100 - CN
Inventeur
TIAN, Shaojie Ningde City Fujian 352100 - CN
HAN, Changlong Ningde City Fujian 352100 - CN
JU, Feng Ningde City Fujian 352100 - CN
ZHANG, Cui Ningde City Fujian 352100 - CN
Mandataire
Marks and Clerk Luxembourg LLP - 44 rue de la Vallée - 2661 Luxembourg - LU
STATUT EN FRANCE
Délivrance
11/11/2020
Registre national des brevets (RNB)
17/10/2023 - N°0260146 - OO : Dérogation à la compétence de la Juridiction Unifiée du Brevet (BOPI 2023-47)
Dernière annuité payée
02/07/2024
Quantième- N° de l'annuité payée
8
Date de paiement de la prochaine annuité
01/09/2025
