No. Prismatic lithium batteries generally use metal aluminum as the battery casing. Since the aluminum material is soft, the thickness of the battery changes when the internal pressure increases during the charging and discharging process and due to gas production. it could even cause the battery to swell.
In extreme cases, the battery explosion-proof valve opens, causing the battery to leak and causing safety accidents. Therefore, analyzing the relevant factors causing battery thickness problems is of great importance to improve battery thickness performance.
Advantages and disadvantages of square lithium batteries in aluminum case
Advantages: The packaging of square lithium battery in aluminum case has high reliability; high energy efficiency of the system,relatively light weight and high energy density; structure It is simple and relatively easy to extend. It is currently an important option to increase energy density by increasing cell capacity. If the cell capacity is large, the system structure is relatively simple, allowing cells to be monitored one by one. . Another advantage provided by the simplicity of the system. Stability is relatively good.
Disadvantages: Since square lithium batteries in aluminum case can be customized according to the size of the product, there are thousands of models on the market, and since there are too many models, the process is difficult to unify. ; production automation The level is not high and the monomers are very different. In large-scale applications, the system life is much less than the monomer life.
Why the bcan the soft pack lithium battery still be used if it is broken? The outer aluminum bag is broken and there is still 4.2V.
The PHA lithium battery film has excellent puncture resistance, impact resistance, friction resistance and d 'other properties, providing a super strong "inner core" which is one of the cores. materials of soft-pack lithium batteries. Aluminum-plastic film composed of lithium battery film and other materials has better ductility and can protect the internal base material when punching a pit or external impact, preventing rupture and penetration water vapor, significantly improving the depth of punching hole and battery. Capacity and extended battery life.
What about Ruanfu lithium battery?
Why can the soft lithium battery still be used if it is brokenee? The reason why the outer aluminum bag is broken and there is still 4.2V? is:
1. Once the aluminum-plastic film of the soft lithium battery is damaged, the electrolyte inside the battery will chemically react with the aluminum-plastic film, producing a large amount of gas, causing the internal pressure of the battery increase quickly. At this time, if the battery does not take safety measures, such as explosion-proof valves and ventilation, the battery may explode.
2. If only the outermost plastic film is damaged, it can still be used, but the injured part should be protected, because the damaged aluminum-plastic film can still protect the battery from the external environment while maintaining it. battery durability and electrochemical function.
3. In addition, if the damaged aluminum-plastic film enters the battery, the battery will be put to rest.ebut and can no longer be used. If you continue to use it at this time, there will be safety risks.
4. If the damaged aluminum-plastic film does not penetrate the battery, the battery can still be used, but the injured area must be handled carefully to avoid infection or affect the battery's performance.
To summarize, why can the soft pack lithium battery still be used if it is broken?The aluminum bag is broken and there is still 4.2V. The reason may be one or many of the reasons above. For safety reasons, it is recommended to take appropriate safety measures when using lithium batteries, such as avoiding excessive extrusion, avoiding high temperature environments, etc.
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1. Good safety: Ruanfu lithium batteries are packaged in aluminum-plastic film, which can release energyergy by swelling or cracking when safety hazards arise, thereby reducing safety hazards.
2. High specific energy: Ruanfu lithium batteries are 40% lighter than steel shell batteries of the same capacity and 20% lighter than aluminum shell batteries. They have a higher mass specific energy and volume specific energy.