The invention provides a lithium ion battery and a preparation method thereof, a LiFe < 1-a > MnaPO4 material and a ternary material are mixed to serve as a positive electrode active material of a positive electrode plate, and the positive electrode active material in a first positive electrode coating close to a positive electrode current collector is controlled to comprise the LiFe < 1-a > MnaPO4 material, the positive electrode active material in the second positive electrode coating far away from the positive electrode current collector comprises a ternary material, and the defined parameter Y is in the range of-7 to 4.5 and the parameter Z is in the range of 0 to 6 by controlling the proportion of the two materials in each layer. Therefore, the battery can be ensured to have relatively high energy density and excellent safety performance. The invention further provides a power vehicle.

    本申请提供了一种锂离子电池及其制备方法,将LiFe1‑aMnaPO4材料和三元材料混合作正极极片的正极活性材料,且控制靠近正极集流体的第一正极涂层中的正极活性材料包括LiFe1‑aMnaPO4材料,远离正极集流体的第二正极涂层中的正极活性材料包括三元材料,并通过这两种材料在各分层中的比例控制,使得所定义参数Y在‑7至4.5的范围、参数Z在0‑6的范围内。这样可保证该电池能兼顾较高的能量密度以及优异的安全性能。本申请还提供了一种动力车辆。


    Access

    Download


    Export, share and cite



    Title :

    Lithium ion battery, preparation method thereof and power vehicle


    Additional title:

    一种锂离子电池及其制备方法及动力车辆


    Contributors:
    DENG XUANWEI (author) / CHEN NA (author) / YANG XIAOBO (author) / GE LIPING (author) / PAN YI (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Lithium ion battery electrolyte and preparation method thereof, lithium ion battery and electric vehicle

    PENG XIAOLI / XIANG YONG / LIU SHENGNAN et al. | European Patent Office | 2021

    Free access

    Lithium ion battery electrolyte and preparation method thereof, lithium ion battery and electric vehicle

    PENG XIAOLI / XIANG YONG / LIU SHENGNAN et al. | European Patent Office | 2021

    Free access


    Positive plate and preparation method thereof, lithium battery and vehicle

    LIU YANG / HE KEFENG / YUAN XIAOTAO et al. | European Patent Office | 2024

    Free access

    Electrolyte and preparation method thereof, lithium ion battery and electric vehicle

    PENG XIAOLI / XIANG YONG / LIU SHENGNAN et al. | European Patent Office | 2022

    Free access