(1) Good safety performance: The electrolyte of Pouch Cell leaks less, and in the event of a safety hazard, the Pouch Cell will bulge and crack, unlike hard-shell batteries that will explode due to excessive internal pressure;
(2) Light weight: The weight of Pouch Cell is 40% lighter than that of steel-shell square batteries of the same capacity, and 20% lighter than that of aluminum-shell square batteries;
(3) Large battery capacity: Pouch Cell saves 20% of volume, has a capacity 50% higher than that of steel-shell batteries of the same specifications and size, and is 20-30% higher than that of aluminum-shell batteries;
(4) Good cycle performance: Pouch Cell has a longer cycle life, and the attenuation after 100 cycles is 4%-7% less than that of aluminum-shell batteries;
(5) Low internal resistance: The internal resistance of Pouch Cell is lower than that of lithium batteries. The minimum in China can be less than 35mΩ, which greatly reduces the battery’s self-consumption.
Pouch Cell have more comprehensive advantages in terms of performance and have broad application prospects in the future:
(1) Soft-pack batteries are more suitable for portable applications that require high space or thickness, such as 3C consumer electronics.
(2) Although the single cell capacity of square batteries is high, they are heavy and large, while Pouch Cell have obvious advantages in energy density. In addition, single cells are currently developing in the direction of large capacity and high rate, which will better meet the requirements of new energy vehicles and other fields for mobile power sources.
1. Good safety performance Lithium iron phosphate and lithium manganese oxide Pouch Cell use aluminum-plastic Pouch Cell in structure, which is different from the metal shell of liquid cells. Once a safety hazard occurs, the liquid cell is prone to explosion, while lithium iron phosphate and lithium manganese oxide cells will only swell at most.
2. Small thickness, can be made thinner Ordinary liquid lithium batteries use the method of first customizing the shell and then plugging the positive and negative electrode materials. There is a technical bottleneck when the thickness is less than 3.6mm. Lithium iron phosphate and lithium manganese oxide batteries do not have this problem. The thickness can be less than 2.5mm, which meets the current demand for electric bicycles.
3. Light weight Lithium iron phosphate and lithium manganese oxide Pouch Cell are 40% lighter than steel shell lithium iron phosphate batteries of the same specifications and 20% lighter than plastic shell batteries.
4. Large capacity Lithium iron phosphate and lithium manganese oxide Pouch Cell of the same specifications have a capacity 10-15% higher than steel shell batteries and 5-10% higher than aluminum shell batteries, becoming the first choice for electric motorcycles and electric vehicles. Most of the new electric motorcycles and electric vehicles on the market now use lithium iron phosphate batteries.
（1）安全性能好：软包电池电解液较少漏液，且在发生安全隐患的情况下软包电池会鼓气裂开，而不像硬壳电池那样内压过大会发生爆炸；
（2）重量轻：软包电池重量较同等容量的钢壳方形电池轻40%，较铝壳方形电池轻20%；
（3）电池容量大：软包节约体积20%，较同等规格尺寸的钢壳电池容量高50%，较铝壳电池高20～30%；
（4）循环性能好：软包电池的循环寿命更长，100次循环衰减比铝壳少4%～7%；
（5）内阻小：软包电池的内阻较锂电池小，国内最小可做到35mΩ以下，极大地降低电池的自耗电；
在性能方面软包电池更具综合优势，未来应用前景广阔：
（1）软包电池更适合便携式、对空间或厚度要求高的应用领域，例如3C消费类电子产品；
（2）虽然方形电池的单体容量高，但又重又大，而软包电池在能量密度方面优势明显，而且目前单体电芯也在往大容量、高倍率方向发展，将更符合新能源汽车等领域对移动电源的要求。1.安全性能好磷酸铁锂和锰酸锂软包装电池在结构上采用铝塑软包装，有别于液态电芯的金属外壳，一旦发生安全隐患，液态电芯容易爆炸，而磷酸铁锂和锰酸锂电芯最多只会鼓涨。
2.厚度小，能做得更薄普通液态锂电采用先订制外壳，后塞正负极材料的方法，厚度做到3.6mm以下时存在技术瓶颈，磷酸铁锂和锰酸锂电芯则不存在这一问题，厚度可做到2.5mm以下，符合时下电动自行车需求方向。
3.重量轻磷酸铁锂和锰酸锂软包装电池重量较同等规格的钢壳磷酸铁锂电池轻40％，较塑壳电池轻20％。
4.容量大同等规格的磷酸铁锂和锰酸锂软包装锂电池较钢壳电池容量高10-15％，较铝壳电池容量高5-10％，成为电动摩托车及电动汽车的首选，现在市面上新出的电动摩托车及电动汽车也大多采用磷酸铁锂电芯。
