dry cell battery.Introduction to the advantages, disadvantages and technical parameters of lithium manganate batteries

　　Introduction to the advantages, disadvantages and technical parameters of lithium manganate batteries. As a lithium battery system that has attracted less market attention, lithium manganate batteries have begun to erode the market. Relying on cost advantages and performance improvements, they have launched an impact on the new energy bus market dominated by iron-lithium.

　　Introduction to the advantages, disadvantages and technical parameters of lithium manganate batteries. As a lithium battery system that has attracted less market attention, lithium manganate batteries have begun to erode the market. Relying on cost advantages and performance improvements, they have launched an impact on the new energy bus market dominated by iron-lithium. Lithium manganese oxide battery has the characteristics of power performance, discharge rate performance, good low temperature performance and high voltage frequency, which can fully meet the market demand.

　　Advantages and Disadvantages of Lithium Manganese Oxide Batteries

　　Lithium manganate battery refers to a battery that uses lithium manganate material as the positive electrode. The nominal voltage of lithium manganate battery is 2.5~4.2v. Lithium manganate battery is widely used for its low cost and good safety.

　　The advantages of lithium manganate batteries are good rate performance, relatively easy preparation, and low cost. The disadvantage is that the dissolution of manganese results in poor high-temperature performance and cycle performance. By doping aluminum and sintering granulation, the high-temperature performance and cycle have been greatly improved, which can basically meet the actual use. In general, lithium manganate batteries have low cost, strong stability at low temperatures, poor high temperature performance, and slightly faster decay.

　　Classification of lithium manganate batteries

　　1. Layered lithium manganate LiMnO2, theoretical capacity 285mA·h/g, voltage platform 4V. The layered structure is difficult to synthesize and unstable. It is easy to generate a Li2Mn2O4 spinel structure, resulting in a drop in the voltage platform, poor stability, and irreversible capacity attenuation.

　　2. High-voltage spinel lithium manganate LiMn2O4, theoretical capacity 148mA·h/g, voltage platform 4.15. High temperature performance is poor, and capacity attenuation is severe above 55°C. It is also easy to generate the Li2Mn2O4 spinel structure, which can lead to a drop in the voltage platform, poor stability, irreversible capacity attenuation, etc. This is the type of lithium manganate currently used in industry.

　　3. Spinel lithium manganese oxide Li2Mn2O4 has low voltage (3V), low capacity, and poor cycle. We are studying how to avoid this kind of thing.

　　Technical parameters of lithium manganate battery

　　Output voltage range: 2.5~4.2v Nominal capacity: 7500mAh

　　Standard continuous discharge current: 0.2C

　　Maximum continuous discharge current: 1C

　　Working temperature: Charging: 0~45℃

　　Discharge: -20~60℃

　　Lead wire model: National standard wire UL3302/26#, 50mm long white wire is 10KNTC

　　Protection board parameters: (Each parameter can be set according to the customer's product)

　　Overcharge protection voltage/4.28±0.025V per string

　　Over-discharge protection voltage 2.4±0.1V

　　Overcurrent value: 2~4A

　　The application system of lithium manganate batteries is still mainly plug-in hybrid. It should not be ignored that there are 36 pure electric bus models with lithium manganate as the main application, accounting for 10% of the models equipped with lithium manganate. 17%. BAIC New Energy has applied the most lithium manganate to pure electric bus models, followed by Xiamen King Long and CSR. In addition, ZTO, Yutong, Yangtze River, Ankai, Sunlong, Yaxing, etc. have all started to apply lithium manganate in pure electric bus models. Applications of lithium manganate.

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