CN114245943A - 二次电池及含有该二次电池的装置 - Google Patents

二次电池及含有该二次电池的装置 Download PDF

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CN114245943A
CN114245943A CN201980098827.1A CN201980098827A CN114245943A CN 114245943 A CN114245943 A CN 114245943A CN 201980098827 A CN201980098827 A CN 201980098827A CN 114245943 A CN114245943 A CN 114245943A
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secondary battery
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CN114245943B (zh
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李丽叶
吴则利
韩昌隆
付成华
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Contemporary Amperex Technology Co Ltd
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Abstract

本申请提供一种二次电池及含有该二次电池的装置，所述二次电池包括：负极极片，所述负极极片包括负极活性材料；隔离膜，所述隔离膜包括基材和设置在基材至少一个表面上的涂层；以及电解液，所述电解液包括有机溶剂；其中，负极活性材料包括硅基材料和碳材料；隔离膜的基材的厚度为7μm～12μm；有机溶剂包括碳酸乙烯酯，碳酸乙烯酯的含量在有机溶剂中的重量占比≤20％。本申请的二次电池及含有该二次电池的装置在具有高能量密度的前提下，还可以同时兼顾较好的高温循环性能、高温存储性能及较低的低温直流阻抗。

Description

PCT国内申请，说明书已公开。

Claims (16)

  1. PCT国内申请，权利要求书已公开。
CN201980098827.1A 2019-12-24 2019-12-24 二次电池及含有该二次电池的装置 Active CN114245943B (zh)

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CN115810874A (zh) * 2022-07-11 2023-03-17 宁德时代新能源科技股份有限公司 一种隔离膜、其制备方法及包含其的二次电池和用电装置
WO2024197838A1 (zh) * 2023-03-31 2024-10-03 宁德时代新能源科技股份有限公司 二次电池及用电装置

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CN110391414A (zh) * 2019-06-19 2019-10-29 重庆市维都利新能源有限公司 一种高能量密度聚合物锂离子电池及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115810874A (zh) * 2022-07-11 2023-03-17 宁德时代新能源科技股份有限公司 一种隔离膜、其制备方法及包含其的二次电池和用电装置
WO2024197838A1 (zh) * 2023-03-31 2024-10-03 宁德时代新能源科技股份有限公司 二次电池及用电装置

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US20220059867A1 (en) 2022-02-24
EP3930049A4 (en) 2022-05-04
EP4181264B1 (en) 2024-07-31
EP3930049A1 (en) 2021-12-29
US11777134B2 (en) 2023-10-03
HUE061683T2 (hu) 2023-08-28
PL3930049T3 (pl) 2023-05-02
KR20220064394A (ko) 2022-05-18
JP7460765B2 (ja) 2024-04-02

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