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
Radiation protective garment with forced ventilation and method
Substituted phenylsulfur trifluoride and other like fluorinating agents
Reaction medium for detecting and/or identifying bacteria of the Legionella genus
Security authentication method, apparatus, and system
Xylitol-based anti-mucosal compositions and related methods and compositions
Method of publicly displaying a person's relationship status
System and method for passing PLC signals from a first electrical line to a second electrical line
  Randomly Featured Patents
Uplink power headroom calculation and reporting for OFDMA carrier aggregation communication system
Menu driven heat treatment control of thin walled bodies
Laser distance meter
Method of forming a dual damascene interconnect by selective metal deposition
System for processing synchronization signals with phase synchronization in a mobile communication network
Apparatus and method for detecting developing ability of an image forming apparatus with varied LED continuous lighting time for image forming and process control modes
Methods for testing optical transmitter components
Data conversion circuit and method in a computing and printing system
Water closet
Door mirror angle control device for car