CYLINDER CELL PREPARATION

The cylindrical cell continues to be one of the most widely used packaging styles for primary and secondary batteries. The advantages are ease of manufacture and good mechanical stability. The tubular cylinder can withstand high internal pressures without deforming.

Most lithium and nickel-based cylindrical cells include a Positive Thermal Coefficient (PTC) switch. When exposed to excessive current, the normally conductive polymer heats up and becomes resistive, acting as short circuit protection. Once the short is removed, the PTC cools down and returns to conductive state.

Most cylindrical cells also feature a pressure relief mechanism. The most simplistic design utilizes a membrane seal that ruptures under high pressure. Leakage and dry-out may occur after the membrane breaks. Re-sealable vents with a spring-loaded valve are the preferred design. Some Li-ion cells connect the pressure relief valve to an electrical fuse that opens the cell if an unsafe pressure builds up.

Typical applications for the cylindrical cell are power tools, medical instruments and laptops. To allow variations within a given size, manufacturers use fractural cell length, such as half and three-quarter formats.

Rotalab provides a wide range of instruments and products for cylindrical cell research and manufacture. Some of our products in this line are:

   · Tape Casting Coater Vacuum Bed
   · Grooving Machine
   · Crimping Machine
   · Sealing Machine
   · Slitting Machine
   · Disassembling Machine
   · Winding Machine
   · Pneumatic Welding Machine
   · Roll-to-Sheet Cutting Machine
   · Ultrasonic Metal Welder
   · Roll-to-Roll Tape Casting Machine

  • MSK-500
    Grooving Machine

    MTI
    Desktop Semi-Automatic Grooving Machine
    Cylinder Cell Grooving Machine
  • MSK-500-L
    Grooving Machine

    MTI
    Desktop Semi-Automatic Grooving Machine
    Cylinder Cell Grooving Machine
  • MSK-510M
    Crimping Machine

    MTI
    Hydraulic Crimping Machine
    Cylinder Cell Crimping Machine
  • MSK-510L
    Sealing Machine

    MTI
    Hydraulic Sealing Machine
    Cylinder Cell Sealing Machine
  • MSK-530
    Disassembling Machine

    MTI
    Compact Disassembling Machine
    Cylinder Cell Disassembling Machine
  • MSK-CSE-300
    Slitting Machine

    MTI
    Semi-Automatic Slitting Machine
    Cylinder Cell Slitting Machine
  • MSK-540
    Edge Slitting Machine

    MTI
    Roll-to-Roll Edge Slitting Machine
    Cylinder and Pouch Cell Slitting Machine
  • MSK-170
    Degassing Chamber

    MTI
    Electrolyte Diffusion and Degassing Chamber
    Diffusion and Degassing Chamber
  • MSK-112A-Cylinder
    Winding Machine

    MTI
    Semi-Automatic Winding Machine
    Cylinder Cell Winding Machine
  • MSK-330A
    Welding Machine

    MTI
    Single Point Pneumatic Welding Machine
    Cylinder Cell Welding Machine
  • MSK-520
    Cutting Machine

    MTI
    Automatic Roll-to-Sheet Cutting Machine
    Cutting Machine
  • MSK-AFA-E200
    Tape Casting Machine

    MTI
    Compact Roll-to-Roll Tape Casting Machine
    Roll-to-Roll Thick Film Coater
  • MSK-800W
    Ultrasonic Metal Welder

    MTI
    Desktop 800W Ultrasonic Metal Welder
    Ultrasonic Metal Welder