Resources Contact Us Home
Secondary cell

Image Number 7 for United States Patent #7273678.

A secondary cell comprises an electrode unit housed in a cell can comprising a cylinder having a bottom and a closed opening, and a current collector plate 50 is provided at one end of the electrode unit. The current collector plate 50 has a plurality of protrusions 52 extending radially thereof and joined to an edge of the electrode unit. The surface of the current collector plate 50 to be joined to the bottom wall of the cylinder has a flat region R extending on a predetermined closed-loop track on the surface, and the portions of the current collector plate 50 and the cylinder to be joined are subjected along the flat region R to laser welding from outside the cylinder.

  Recently Added Patents
Substituted bicyclic HCV inhibitors
Security authentication method, apparatus, and system
Method and system for encrypting data in a wireless communication system
Physiological measuring system comprising a garment in the form of a sleeve or glove and sensing apparatus incorporated in the garment
Method and system for modularized configurable connector system for ethernet applications
Process to extract quassinoids
Protective vest
  Randomly Featured Patents
Correction of errors in a memory array
Methods for multiplexing recombinase polymerase amplification
Imaging device, GPS control method, and computer program
3.2.1-bicyclo-octene and -octane compounds
Rotary electric machine
Structure of driving unit in drum type washing machine
Isolation circuitry for transmitter electronics in process control system
Switch and packet forwarding method
Retractable radiotelephone antennas and associated radiotelephone communication methods
Light-directing apparatus with protected reflector-shield and lighting fixture utilizing same