电动搬运车用锂电池优化设计

Optimization design of lithium battery for electric stacker

对电动搬运车用锂电池正极配方和浆料制备工艺进行调整和优化,从源头上改善涂布浆料混合的分散性和均匀性。通过导电炭黑与碳纳米管的优化组合构建了点、线二维导电网络,提升电极的离子导电性和倍率性能。优化设计的实验电池一次配组率提升了3.8%,在5C放电倍率条件下倍率效率提升了12%,1000次循环容量保持率上升了4%,工况模拟试验结果比对比电池多了5个运行周期。所以,综合性能达到或超过了电动搬运车用锂电池技术规格书中关于5C倍率效率和1000次循环容量保持率,以及工况模拟的技术条件。

The positive electrode formula and slurry preparation process of lithium battery for electric stacker were adjusted and optimized to ensure the dispersion and uniformity of coating slurry mixing from the source,and the point and line two-dimensional conducting network was constructed through the optimal combination of conductive carbon black and carbon nanotubes to improve the ion conductivity and rate performance of the electrode.The primary pairing rate of experimental battery increased by 3.8%,and under the condition of 5C discharge rate,the current efficiency was increased by 12%.The capacity retention rate of 1000 cycles was increased by 4%.The simulation test lasted 5 more cycles than the comparison battery.The comprehensive performance meets or exceeds the technical conditions of 5C current efficiency,1000 cycles capacity retention rate and working condition simulation in the technical specifications of lithium batteries for electric transport vehicles.