The difference between soft lithium batteries and hard lithium batteries from Pacific Automotive Network mainly lies in the material of the lithium battery shell. The weight of steel case batteries will be heavier than batteries of the same volume, but it is not easy to distinguish between aluminum case batteries and soft case batteries. However, soft case batteries are more flexible than aluminum case batteries and are easy to leave. deformed when broken by hand. Regarding the question of whether soft packaging or hard packaging of lithium iron phosphate batteries is better, we can first understand the characteristics of the two.
The packaging difference between soft lithium batteries and lithium iron phosphate batteries. What is the difference between flexible lithium batteries and rigid lithium batterieses? There are many ways to condition lithium batteries. The most common are soft-packaged lithium-ion batteries and rigid-packaged square lithium-ion batteries. The main difference between flexible packaged lithium ion batteries and rigid packaged lithium ion batteries is the packaging method. Compared to the same period last year, soft lithium-ion batteries are often found in small and micro digital electronic devices, and rigid lithium-ion batteries are often used in larger electrical equipment: Batteries Soft lithium-ion batteries are a simple polymer-cased liquid lithium-ion battery. In the aluminum-plastic film packaging structure, the soft battery will expand, posing safety hazards.
The advantages of soft lithium-ion batteries: compared to hard lithium-ion batteries, they have the advantagesadvantages of small size, light weight, high specific energy, high security and flexible scheduling. Specific advantages include: Soft lithium-ion battery packs are safe, unlike steel and aluminum battery packs, which can explode.
Lightweight, soft-pack batteries are 40% lighter than steel lithium-ion batteries of the same capacity and 20% lighter than aluminum batteries.
The capacity of flexible lithium-ion batteries is 10-15% larger than that of steel-cased batteries of the same size and 5-10% larger than that of aluminum-cased batteries.
Soft-packaged lithium-ion batteries and hard-packaged lithium-ion batteries refer to the difference between lithium-ion battery case materials. If there is packaging, it will not be simple. You need to look at the body weight of the lithium-io batteryn, the steel case of the battery and the volume of the battery. However, the difference between aluminum enclosures and flexible packaging is not simple. batteries are more likely to warp and break than aluminum cases.
Regarding the shape, since the battery inside the lithium-ion soft-pack battery is liquid, its shape can generally have a variety of shapes in terms of specific requirements for the form of lithium. Lithium-ion batteries, it is better than that of hard-packaged lithium-ion batteries, have great advantages.
In fact, the packaging characteristics of lithium-ion batteries are the same, but the packaging methods are different due to different occasions. The first thing to look at is the application. If you have strict protection requirements for lithium-ion batteries, it is best to use a hard case.What is the difference between flexible lithium-ion batteries and rigid lithium-ion batteries? I think you can understand the difference between soft-packaged lithium-ion batteries and hard-packaged lithium-ion batteries from the above analysis. The energy storage lithium iron phosphate battery has won praise from users in various industries for its stable performance and excellent technology. It is a reliable high-tech product in lithium ion battery inverter industry.
(Images/Text/Photos: Pacific Automotive Network Q&A)
What are the advantages and disadvantages of soft-pack lithium batteries? pack and hard-pack Lithium batteries Comparison of advantages and disadvantages)
Aluminum plastic film, positive and negative electrode materials, separatorMembrane, electrolyte, additives. 3.7 Soft batteries are the mainConsisting of aluminum plastic film, positive and negative electrode materials, separators and electrolytes. Aluminum-plastic film is the key material for packaging lithium battery cells in flexible packaging. Aluminum plastic film is mainly composed of nylon layer, aluminum foil layer, heat sealing layer and adhesive for bonding.
Although soft lithium batteries are not popular in China, their international market share reaches 70%. The following are the advantages and disadvantages of soft lithium batteries:
1. Advantages
1. Good safety performance: Soft-packaged lithium batteries are structurally packaged in lithium-packaged aluminum-plastic film. batteries usually swell first or crack because of the seal to release energy, and there is no risk of explosion like lithium batteries packed in rigid packaging.
2. Light weight: The weight of the soft pack battery is 40% lighter than the same capacity lithium battery with steel case and 20% lighter than the battery with aluminum housing
3. Small internal resistance: domestic; soft pack The minimum internal resistance of the battery core can be less than 35m?, which greatly reduces the battery's self-consumption
4. Flexible design: size and The shape of soft battery can be designed according to actual needs, unlike hard batteries which only have round and square options.
2. Disadvantages
1. Imperfect supply chain: purchasing certain raw materials and production equipment for the lithium soft-pack batteries The channel is still relatively single. Once problems arisewith suppliers, it will have a certain impact on the production and operation of battery companies and the stability of supply of automobile 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. In extreme cases, this type of battery can crack from the seam to release energy. won't explode like a batlithium battery packed to some 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.