1. WO2026174449 - BATTERY CELL, BATTERY APPARATUS, AND ELECTRIC DEVICE

Publication Number WO/2026/174449

Publication Date 27.08.2026

International Application No. PCT/CN2025/078007

International Filing Date 19.02.2025

IPC

H01M 4/136 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
13	Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
136	Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy

H01M 4/133 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
13	Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
133	Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx

H01M 4/587 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
36	Selection of substances as active materials, active masses, active liquids
58	of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583	Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587	for inserting or intercalating light metals

H01M 10/0525 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10	Secondary cells; Manufacture thereof
05	Accumulators with non-aqueous electrolyte
052	Li-accumulators
0525	Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

H01M 4/136 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
13	Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
136	Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy

H01M 4/133 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
13	Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
133	Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx

H01M 4/587 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
36	Selection of substances as active materials, active masses, active liquids
58	of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583	Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587	for inserting or intercalating light metals

H01M 10/0525 2010.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10	Secondary cells; Manufacture thereof
05	Accumulators with non-aqueous electrolyte
052	Li-accumulators
0525	Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

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Applicants

• 宁德时代新能源科技股份有限公司 CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED [CN]/[CN]

Inventors

• 时玮 SHI, Wei
• 景二东 JING, Erdong
• 刘桓基 LIU, Huanji
• 何勇 HE, Yong
• 蒋菡 JIANG, Han
• 余金城 YU, Jincheng
• 孙宏亮 SUN, Hongliang
• 陈晓 CHEN, Xiao
• 谢浩添 XIE, Haotian

Agents

• 北京龙双利达知识产权代理有限公司 LONGSUN LEAD IP LTD.

Priority Data

Publication Language Chinese (zh)

Filing Language Chinese (zh)

Designated States

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AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CV, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IQ, IR, IS, IT, JM, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, MG, MK, MN, MU, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UY, UZ, VC, VN, WS, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, CV, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SC, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

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Title

(EN) BATTERY CELL, BATTERY APPARATUS, AND ELECTRIC DEVICE

(FR) ÉLÉMENT DE BATTERIE, APPAREIL DE BATTERIE ET DISPOSITIF ÉLECTRIQUE

(ZH) 电池单体、电池装置、用电设备

Abstract

(EN) A battery cell, a battery apparatus, and an electric device, relating to the technical field of batteries. The battery cell comprises: a positive electrode sheet, comprising a positive electrode current collector and a positive electrode film layer provided on at least one side of the positive electrode current collector, wherein the positive electrode film layer comprises a lithium-containing phosphate, a first additive, and a second additive, the first additive comprises a lithium-containing transition metal oxide, and the second additive comprises a nickel-containing metal oxide; a negative electrode sheet, comprising a negative electrode current collector and a negative electrode film layer provided on at least one side of the negative electrode current collector, wherein the negative electrode film layer comprises graphite; and an electrolyte, comprising a chain carboxylic acid ester solvent, wherein the mass content of the chain carboxylic acid ester solvent is 32%-60% on the basis of the total mass of the electrolyte. The technical solution of the present application can reduce the gas production of the battery cell so as to improve the cycle performance of the battery cell, and the battery cell also has good fast charge performance.

(FR) La présente invention concerne un élément de batterie, un appareil de batterie et un dispositif électrique, relevant du domaine technique des batteries. L'élément de batterie comprend : une feuille d'électrode positive, comprenant un collecteur de courant d'électrode positive et une couche de film d'électrode positive disposée sur au moins un côté du collecteur de courant d'électrode positive, la couche de film d'électrode positive comprenant un phosphate contenant du lithium, un premier additif et un second additif, le premier additif comprenant un oxyde de métal de transition contenant du lithium, et le second additif comprenant un oxyde de métal contenant du nickel ; une feuille d'électrode négative, comprenant un collecteur de courant d'électrode négative et une couche de film d'électrode négative disposée sur au moins un côté du collecteur de courant d'électrode négative, la couche de film d'électrode négative comprenant du graphite ; et un électrolyte, comprenant un solvant ester d'acide carboxylique à chaîne, la teneur en masse du solvant ester d'acide carboxylique à chaîne étant comprise entre 32 % et 60 % sur la base de la masse totale de l'électrolyte. La solution technique de la présente invention consiste à réduire la production de gaz de l'élément de batterie de façon à améliorer les performances de cycle de l'élément de batterie, et l'élément de batterie présente également de bonnes performances de charge rapide.

(ZH) 一种电池单体、电池装置和用电设备，属于电池技术领域。电池单体包括：正极极片，包括正极集流体和设置于正极集流体至少一侧的正极膜层，正极膜层包括含锂磷酸盐、第一添加剂和第二添加剂，第一添加剂包括含锂过渡金属氧化物，第二添加剂包括含镍金属氧化物；负极极片，包括负极集流体和设置于负极集流体至少一侧的负极膜层，负极膜层包括石墨；电解液，包括链状羧酸酯类溶剂，基于电解液的总质量计，链状羧酸酯类溶剂的质量含量为32％-60％。本申请的技术方案可以降低电池单体的产气量以提升电池单体的循环性能、同时电池单体还具有较好的快充性能。

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