摘要：【中文】本发明公开了一种高倍率锂离子动力电池，包括正极片、负极片、隔膜、电解液和电池外壳，负极片负极涂层中的负极活性物质包括不同粒径的人造石墨A和人造石墨B，以及包覆在人造石墨A和人造石墨B上的软碳材料，正极片正极涂层中的正极活性物质包括镍钴铝酸锂和622镍钴锰酸锂，结合倍率型隔膜和高倍率型电解液，实现容量高、倍率放电能力强、充/放循环寿命长的效果。发明还公开了一种高倍率锂离子动力电池的制备方法，可获得综合性能优良的锂离子电池。本发明电池可应用于锂离子动力电池市场领域，同时可以延伸应用到储能市场领域和数码市场领域。 【EN】The invention discloses a high-rate lithium ion power battery which comprises a positive plate, a negative plate, a diaphragm, electrolyte and a battery shell, wherein negative active substances in a negative coating of the negative plate comprise artificial graphite A and artificial graphite B with different particle sizes and soft carbon materials coated on the artificial graphite A and the artificial graphite B, and the positive active substances in the positive coating of the positive plate comprise lithium nickel cobalt aluminate and 622 lithium nickel cobalt manganese oxide and are combined with the rate type diaphragm and the high-rate electrolyte to realize the effects of high capacity, strong rate discharge capacity and long charge/discharge cycle life. The invention also discloses a preparation method of the high-rate lithium ion power battery, and the lithium ion battery with excellent comprehensive performance can be obtained. The battery can be applied to the market field of lithium ion power batteries, and can be extended to the fields of energy storage market and digital market.

摘要：【中文】本发明公开了一种正极极片、锂离子电池及其制造方法，选用单晶高镍三元材料作为正极活性物质，正极活性物质选用单晶高镍三元材料并掺杂了Mg，单晶高镍三元材料的颗粒表面呈多孔状结构，颗粒粒径小，电导率得到提高，在高倍率放电时，锂离子能迅速嵌入到单晶高镍三元材料的晶格中，提高了正极活性物质、涂覆有该正极活性物质的正极极片以及以该正极极片作为正极的锂离子电池的倍率性能。 【EN】The invention discloses a positive pole piece, a lithium ion battery and a manufacturing method thereof, wherein a single crystal high nickel ternary material is selected as a positive active material, the positive active material is selected from the single crystal high nickel ternary material and is doped with Mg, the particle surface of the single crystal high nickel ternary material is of a porous structure, the particle size is small, the conductivity is improved, lithium ions can be rapidly embedded into crystal lattices of the single crystal high nickel ternary material during high-rate discharge, and the rate capability of the positive active material, the positive pole piece coated with the positive active material and the lithium ion battery taking the positive pole piece as the positive pole are improved.

摘要：【中文】本发明公开了一种高电压电解液，包括电解液溶剂、锂盐和电解液添加剂，其中电解液添加剂包括氟代碳酸乙烯酯、硫酸乙烯酯、亚硫酸丙烯酯、三氟甲基苯硫醚、烯丙氧基三甲烷和三(三甲基硅烷)硼酸酯，电解液适用于高电压锂离子电池，高电压状态下电解液体系稳定性强，可有效提高电池的循环寿命和综合性能。本发明还公开了一种高电压锂离子动力电池，包括正极片、负极片、隔膜和上述高电压电解液，高电压电解液配合改进的正极高镍单晶三元材料和负极高温石墨化的人造石墨，提高了电极的机械强度和电化学稳定性，提升了充电截止电压，电池容量和电池续航能力高，电池循环寿命长。 【EN】The invention discloses a high-voltage electrolyte, which comprises an electrolyte solvent, lithium salt and an electrolyte additive, wherein the electrolyte additive comprises fluoroethylene carbonate, ethylene sulfate, propylene sulfite, trifluoromethylphenylsulfide, allyloxytrimethylsilane and tris (trimethylsilane) borate, the electrolyte is suitable for a high-voltage lithium ion battery, the stability of an electrolyte system is strong in a high-voltage state, and the cycle life and the comprehensive performance of the battery can be effectively improved. The invention also discloses a high-voltage lithium ion power battery, which comprises a positive plate, a negative plate, a diaphragm and the high-voltage electrolyte, wherein the high-voltage electrolyte is matched with the improved positive high-nickel single crystal ternary material and the negative high-temperature graphitized artificial graphite, so that the mechanical strength and the electrochemical stability of the electrode are improved, the charge cut-off voltage is improved, the battery capacity and the battery endurance are high, and the battery cycle life is long.

摘要：【中文】本发明公开了负极极片、锂离子电池及其制造方法，选用改性的人造石墨作为负极活性物质，人造石墨掺杂了Cu、Ni和Ag中的一种或几种，人造石墨表面包覆有经酚醛树脂热解后的无定形碳，人造石墨的表面还经过热处理，有效提升了负极活性物质、涂覆有该负极活性物质的负极极片以及以该负极极片作为负极的锂离子电池的大电流放电能力。 【EN】The invention discloses a negative pole piece, a lithium ion battery and a manufacturing method thereof.A modified artificial graphite is selected as a negative active material, the artificial graphite is doped with one or more of Cu, Ni and Ag, the surface of the artificial graphite is coated with amorphous carbon pyrolyzed by phenolic resin, and the surface of the artificial graphite is also subjected to heat treatment, so that the large-current discharge capacity of the negative active material, the negative pole piece coated with the negative active material and the lithium ion battery taking the negative pole piece as the negative pole are effectively improved.

摘要：【中文】本发明公开了一种圆柱型锂离子电池，包括正极片、负极片、隔膜、电解液和电池外壳，并在正极片长度方向的1/4‑1/2处设置了正极耳，在负极片长度方向的两端各设置了1pcs短负极耳和1pcs长负极耳，同时对电池正、负极片的配方和制备工艺进行了改进；本发明电池使用循环寿命长、温度适应性强、电池成本低。本发明还公开了一种圆柱型锂离子电池的制备方法，生产工艺简单，成本低，与改进的原料配方和电极片结构相结合，可获得综合性能优良的锂离子电池，应用于数码、动力、储能等市场领域，可以完全替代铅酸电池、镍氢电池等。 【EN】The invention discloses a cylindrical lithium ion battery, which comprises a positive plate, a negative plate, a diaphragm, electrolyte and a battery shell, wherein a positive lug is arranged at the position 1/4-1/2 in the length direction of the positive plate, a 1pcs short negative lug and a 1pcs long negative lug are respectively arranged at the two ends in the length direction of the negative plate, and meanwhile, the formula and the preparation process of the positive plate and the negative plate of the battery are improved; the battery has the advantages of long service cycle life, strong temperature adaptability and low battery cost. The invention also discloses a preparation method of the cylindrical lithium ion battery, which has simple production process and low cost, can obtain the lithium ion battery with excellent comprehensive performance by combining the improved raw material formula and the electrode plate structure, is applied to the market fields of digital, power, energy storage and the like, and can completely replace lead-acid batteries, nickel-hydrogen batteries and the like.