Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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 and system for producing fluoride gas and fluorine-doped glass or ceramics
Bioelectric battery for implantable device applications
Battery module
Belt with light
Semiconductor memory device
Battery loading and unloading mechanism
Fail-safe upgrading of portable electronic device software
  Randomly Featured Patents
Dielectric filter
Soybean cultivar S07-02KG242708
Objective lens and optical pickup apparatus
Telecommunication terminal equipment responding with electronic mail containing schedule and response method using electronic mail containing schedule
Ceiling fan housing
Hydrodynamically operated multifocal contact lens
Fluid bearing device
Method and apparatus for cleaning roots, tubers, bulbs, and the like
Optical microscope
Low modulus belt for automotive applications