摘要:
An electromagnetic pump comprising a housing having a fluid receiving chamber (14) in communication with an inlet (18), a fluid pumping chamber (16) in fluid communication with an outlet (20), a check valve operatively associated with the fluid receiving chamber, and a barrier in the form of a thin diaphragm hermetically isolating the electromagnet from the fluid chambers. An armature of the pump includes both a pole portion located for magnetic attraction by the electromagnet and a piston portion to force fluid out of the chambers. The armature pole portion has a fluid-contacting section of material which is compatible with and corrosion resistant to the fluid. A controlled bypass (274) is provided for bubbles in the fluid. An outlet orifice (290) and accumulator (436) are provided in the path of fluid flow from the pump outlet.
摘要:
A bonding pad for connecting an electrical energy storage device to an implantable medical device, is described. The bonding pad comprises at least two contact surfaces, one have a channel for receiving the terminal lead of the electrical energy storage device, the other being relatively planar for contact to the medical device. That way, the channel provides for increased surface area contact with the terminal lead for a more robust connection while the opposite, planar contact surface provides flexibility for contact to a lead of the medical device.
摘要:
The present comprises an electrode having the configuration: first active material/current collector/second active material. One of the electrode active materials in a cohesive form is incapable of moving through the current collector to the other side thereof. However, in an un-cohesive form, the one electrode active material is capable of communication through the current collector. The other or second active material is in a form in-capable of communication through the current collector, whether it is in a cohesive or un-cohesive powder form. Then, the assembly of first active material/current collector/second active material is pressed from either the direction of the first electrode active material to the second electrode active material, or visa versa.
摘要:
A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one phosphate additive having the formula: (R 1 O)P(=O) (OR 2 ) (OR 3 ) and wherein R 1 , R 2 and R 3 are the same or different, wherein at least one, but not all three, of the R groups is hydrogen, or at least one of the R groups has at least 3 carbon atoms and contains an sp or sp 2 hybridized carbon atom bonded to an sp 3 hybridized carbon atom bonded to the oxygen atom bonded to the phosphorous atom.
摘要:
A header for an electrochemical cell is described. The header provides a boss for the terminal ferrule, a shield portion for the fill ferrule, and at least one boss disposed intermediate the terminal boss and shield portion to provide for alignment of the electrode assembly inside the case.
摘要:
The present invention is directed to a header assembly attachable to a medical device for the purpose of connecting its output terminals to at least one lead, the lead terminating at a target organ or portion of the body intending to be assisted. A number of leads are connectable to the header, including single and coaxial leads. The header assembly may be melded directly to the medical device or preformed and then attached to the device casing, either by mechanical fastener and/or chemical adhesive.
摘要:
In primary cells, the addition of gaseous carbon dioxide to the nonaqueous electrolyte has beneficial effects in terms of minimizing or eliminating voltage delay and reducing Rdc build-up when the cell is subjected to pulse current discharge conditions. For secondary systems, carbon dioxide provided in the electrolyte benefits cycling efficiency. The problem is that carbon dioxide readily degases from an electrolyte prepared'under an ambient atmosphere. To prevent this, the carbon dioxide-containing electrolyte is prepared and stored in a carbon dioxide atmosphere. Also, the thusly prepared electrolyte is filed into the casing in a carbon dioxide-containing atmosphere. This prevents degassing of the additive from the electrolyte.
摘要:
The invention is directed to an electrochemical cell. having at least one of its electrodes produced by coating a slurry mixture of an active material, possibly a conductive additive, and a binder dispersed in a solvent and contacted to a perforated current collector foil. It is particularly important that the active slurry does not move through the perforations of the current collector. For this reason, a barrier is placed against the opposite side of the current collector to block the perforations as the current collector is being coated with the slurry. After volatilizing the solvent, a second, different active material is coated to the opposite side of the current collector, either as a slurry, a pressed powder, a pellet or a free standing sheet. An example of this is a cathode having a configuration of: SVO/current collector CF x . The opposed active materials on the current collector can also be of the same chemistry.
摘要:
The present invention relates to a current collector for an electrochemical cell. The current collector has a unique grid structure comprised of a frame supporting a plurality of radial strands as conductors radiating outwardly from a focal point on a connector tab. The frame and radial conductors are maintained in a fan-like orientation with respect to each other by two groups of concentric conductor strands, one located adjacent to the tab, the other spaced a substantial distance therefrom. The radiating conductors provide a more direct path to the connector tab for electron flow. This results in the current collector having reduced internal resistance in comparison to conventional current collector designs.