Both lithium batteries are good.
Advantages of flexible lithium batteries:
1. Safer: Soft lithium batteries will not catch fire or explode.
2. Lightweight: Soft lithium batteries have higher energy density and are smaller in size for the same amount of electricity.
3. Soft-pack lithium batteries have low requirements for battery protection boards: low internal resistance and good high-current discharge performance.
Advantages of large cell lithium batteries:
1. Large capacity, low internal resistance and good group coherence: Large cell lithium batteries replace the need for many small capacity batteries. to be connected in parallel. The energy module has good consistency, and the data collected by the module via BMS has credibility.
2. Less stupid pointsxion and low failure rate: The fewer connection points in the power system of a single large-capacity lithium battery, the lower the probability of accidents.
3. Fast Charging and Long Life: Large lithium batteries charge quickly and can charge 90% in 1 hour, keeping the battery in optimal condition forever.
Are Ningde era lithium batteries packed in soft packaging or aluminum packaging?
Although lithium batteries in soft packaging are not not popular in China, their share in the international market reaches 70%. %. The following are the advantages and disadvantages of soft-pack lithium batteries:
1. Advantages
1. Good safety performance: soft lithium batteries. The structure is wrapped in aluminum-plastic film. In the event of a safety risk, the pilSoft lithium batteries will usually expand first or crack from the joint to release energy. the same risk of explosion as lithium batteries packed in rigid packaging;
2. Lightweight: Soft batteries are 40% lighter than steel-cased lithium batteries of the same capacity and 20% lighter than aluminum-cased batteries ;
3. Small internal resistance: The minimum internal resistance of domestic soft pack battery cells can be less than 35m?, which greatly reduces the battery's self-consumption ;
4. Flexible design: The size and shape of soft batteries can be designed according to actual needs, unlike rigid batteries which only have round and square options.
2. Disadvantages
1. Imperfect supply chain: purchasing certain raw materials and equipmente production for lithium soft-pack batteries The channel is still relatively single. Once problems arise with suppliers, it will have a certain impact on the production and operation of battery companies and the stability of supply of Car manufacturers ;
2. High cost: At present, the high-end aluminum-plastic film used in domestic soft lithium batteries still depends on imports, and the cost is very high ;
3. Few models: existing soft-pack lithium batteries The models are very limited and the cost of developing new models is too high. At this point, soft-pack lithium batteries can only meet a small portion of market demand.
Will soft lithium batteries explode?
As the above shows, soft lithium batteries will not explode. InIn extreme cases, this type of battery can crack from the joint to release energy. will not explode like a packed lithium battery to a certain extent. Lithium-ion batteries are at risk of exploding once the energy has accumulated.
In foreign markets, the number of models equipped with soft-pack batteries is still very large. According to incomplete statistics, more than 30 models are equipped with soft-pack batteries, among which Among the 20 best-selling new energy passenger cars in Europe in 2020, 15 models are equipped with soft-pack lithium batteries, there are no There is therefore no need to worry too much about battery safety.
Soft bag. According to the official website of Ningde Times, we learned that the soft packaging of lithium batteries is customized according to the specific size of the PACK box. The cells are arranged in various battery layouts to make full use of theinternal space of the case. battery box. Because soft battery is a battery in which the positive and negative electrode materials are separated by a membrane or composite membrane to form a foldable and foldable package. Soft batteries have the advantages of small size, high energy density and high flexibility, so they are suitable for applications in electric vehicles and power tools with limited space.