18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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Comparison between cylindrical lithium battery and square lithium battery

release time:2022-12-02 Hits:     Popular:AG11 battery

  Lithium-ion battery G500

  1. Battery shape: The square size can be designed arbitrarily, while the cylindrical battery cannot be compared.

  2. Multiplication characteristics: the process limit for welding multipole lug of cylindrical battery is slightly worse than that of square multipole lug battery.

  3. Discharge platform: for lithium batteries using the same positive and negative electrode materials and electrolyte, theoretically, the discharge platform should be the same, but the discharge platform in the square lithium battery is slightly higher.

  4. Product quality: The manufacturing process of the cylindrical battery is relatively mature, the probability of secondary slitting defects of the pole piece is low, and the maturity and automation of the winding process are relatively high. At present, the lamination process is still semi manual, which has a negative impact on the battery quality.

  5. Lug welding: cylindrical battery lug is easier to weld than square lithium battery; The square lithium battery is easy to produce faulty soldering, which affects the battery quality.

  6. PACK grouping: the cylindrical battery is easier to use, so the PACK technology is simple and the heat dissipation effect is good; The problem of heat dissipation shall be solved when the square lithium battery is packed.

  7. Structural characteristics: the chemical activity of square lithium battery is poor at the corners, the energy density of the battery is easy to decay after long-term use, and the battery life is short.


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