Apparatus for forming structured material for energy storage device and method
View Patent ↗A method and an apparatus of the present invention is used for the high-rate deposition of materials, such as carbon, silicon, metals, metal oxides, and the like, onto a metal substrate defined by a metal tape. The particles of the material are mixed with fluid and are injected against the metal tape at high pressure and high velocity. The particles of the material form a current collection surface of the metal tape. The metal tape is used as cathode or anode combined with a separator to form a fuel cell of a secondary battery, metal-ceramic membranes, film composite metal-ceramic materials for electronic devices.
1. An apparatus for forming a cell producing electric power and having a first electrode and a second electrode formed from a metal tape for collecting current and a separator disposed between the first and second electrodes, said apparatus comprising:
a work surface presenting terminal ends;
a deposition device defined at one of said terminal ends for processing the metal tape and depositing particles of active material onto the metal tape for forming a grid of active layer;
a calibrating device disposed at the other of said terminal ends for removing excess of the particles of active material from the metal tape and for forming pores in the grid and for rolling the metal tape into at least one roll; and
a recycling mechanism adjacently disposed and fluidly communicating with said calibration device and said deposition device for collecting the excess of the particles of active material from said calibrating device and returning the particles of active material to said deposition device to be applied to the metal tape.
2. An apparatus as set forth in claim 1 wherein said recycling mechanism includes at least one receiving roll adjacent said calibration device for rolling the metal tape to the roll.
3. An apparatus as set forth in claim 2 wherein said work surface is further defined by a support platform extending along an assembly path and having a plurality of channels defined therein for reducing the weight of said support platform.
4. An apparatus as set forth in claim 3 including a heating element positioned on said support platform and extending along said assembly path between said calibration device and said deposition device for continuously heating the metal tape to remove elastic stress as the metal tape is moved between said calibration device and said deposition device.
5. An apparatus as set forth in claim 3 including a plurality of support rollers connected to and extending from said support platform for supporting and moving the metal tape between said calibration device and said deposition device.
6. An apparatus as set forth in claim 5 wherein said heating element is further defined by a plurality of sections disposed between said support rollers along said assembly path.
7. An apparatus as set forth in claim 6 wherein said deposition device includes an injector mechanism for deposition of the particles of active material under increased speed and injecting the particles of active material mixed with pressurized fluid against the metal tape.
8. An apparatus as set forth in claim 7 wherein said deposition device includes an accelerating mechanism for increasing a speed of the particles of active material mixed with the pressurized fluid.
9. An apparatus as set forth in claim 8 wherein said deposition device includes a Laval nozzle having at least one ultrasonic chamber.
10. An apparatus as set forth in claim 8 wherein said accelerating mechanism is further defined by a spiral member.
11. An apparatus as set forth in claim 7 including a funnel for introducing the particles of active material to said deposition device.
12. An apparatus as set forth in claim 7 including a tubular member connecting with said funnel and said recycling mechanism for transferring the excess of the particles of active material from said calibrating device and returning the particles of active material to said deposition device through said funnel.
13. An apparatus as set forth in claim 1 including a controller operably communicating with each of said deposition device and said calibrating device and said recycling mechanism.
14. An apparatus as set forth in claim 13 wherein said controller is further defined by a Digital Process Parameter Control unit (DPPC) having a comparative software storing pre-determined size of the particles of active material and adaptable to receive multiple signals from said DPPC to integrate said signals thereby determining the offset between the particles of active material as applied onto the metal tape.
15. An apparatus as set forth in claim 14 including a stroboscopic laser device communicating with said DPPC to determine the size of the particles of active material.