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
Method of operating an election ballot printing system
Data output apparatus and data output method
Content reproduction apparatus and content processing method therefor
Cytokine biomarkers as predictive biomarkers of clinical response for Glatiramer acetate
Imidazolidine-2,4-dione derivatives, and use thereof as a cancer drug
System for setting programmable parameters for an implantable hypertension treatment device
System and method for reducing the risks involved in trading multiple spread trading strategies
  Randomly Featured Patents
Shredder thickness with anti-jitter feature
Finely divided, precipitated silica with high structure, method of its preparation and use
Humeral head augment device and method for use in a shoulder prosthesis
Automatic worm hooker
Process for the manufacture of low gloss resins
Interconvertible solid and liquid states of Olestra
Benzothiophene-2-carboxamide S,S-dioxides and use
Semiconductor memory device and operating method with hidden write control
Constant velocity joint
Flow regulator