Why are
18650 lithium batteries so popular?Let me take you all to learn about it!
Lithium ion batteries are currently mainly divided into three categories: square, cylindrical, and soft pack; The square and cylindrical shells mainly use hard shells such as aluminum alloy and stainless steel, while the soft pack shell uses aluminum-plastic film. Compared with the square and cylindrical shells, what are the special advantages of soft pack lithium batteries?
Chengdu soft pack lithium battery
(1) Good performance: Soft pack batteries have less electrolyte leakage, and in the event of hidden dangers, soft pack batteries will burst and crack, unlike hard shell batteries where excessive internal pressure can cause explosions;
(2) Lightweight: Soft pack batteries are 40% lighter than steel shell square batteries of the same capacity and 20% lighter than aluminum shell square batteries;
(3) Large battery capacity: Soft pack saves 20% of volume, with a capacity 50% higher than steel shell batteries of the same size and 20-30% higher than aluminum shell batteries;
(4) Good cycle performance: Soft pack batteries have a longer cycle life, with 4% to 7% less attenuation after 100 cycles compared to aluminum shells;
Performance comparison of three types of batteries:
(1) Soft pack batteries are more suitable for portable applications that require high space or thickness, such as 3C consumer electronics products;
(2) Although square batteries have a high single capacity, they are heavy and large, while soft pack batteries have obvious advantages in energy density. Currently, single cell batteries are also developing towards large capacity and high rate, which will better meet the requirements of mobile power sources in fields such as new energy vehicles;
The Dacheng Precision 2D Offline Laser Thickness Gauge is designed to provide various thickness measurement solutions for lithium-ion battery production sites. Capable of high-precision thickness measurement of samples in the XY plane. According to different measurement requirements, the measuring fixture can be replaced to complete the thickness scanning measurement of the established sample. Each installation position can measure a thickness profile. Placed in the top side sealing workshop of soft pack batteries, used for offline sampling of sealing edge thickness to indirectly determine sealing quality. The thickness measurement of the seal on the soft pack battery can be easily achieved on this device.
Overall, soft pack batteries have comprehensive advantages in terms of performance and have broad prospects for future applications.
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