Processing equipment for using organic vapor to remove water from electrode materials and cell cores

Patent metadata

Field	Value
Publication number	US-9937481-B1
Application number	US-201715405364-A
Country	US
Kind code	B1
Filing date	Jan 13, 2017
Priority date	Jan 13, 2017
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A reaction vessel in the form of a box is sized to closely contain electrode elements or core cell elements of a lithium-based or sodium-based battery or capacitor for contacting of the electrode material, placed in the reaction vessel, with a flowing gaseous stream of an inert carrier gas and vapor of an organic solvent of water for removing residual water from the porous electrode material elements which are to be infiltrated with a non-aqueous electrolyte solution. Complementary equipment is provided for delivering the gaseous stream to the reaction vessel with predetermined portions of carrier gas and organic vapor at a predetermined temperature, pressure, and flow rate.

First claim

What is claimed is:

1. A combination of a reaction vessel and organic vapor stream delivery equipment for contacting battery or capacitor electrode elements, or core cells of battery or capacitor electrode elements and separator elements, with a flowing, water-removing stream of an organic vapor in a carrier gas,
the reaction vessel comprising:
a box with a bottom wall surface, two side wall surfaces, a top wall surface, and two end wall surfaces which define an interior volume for receiving a predetermined quantity of water-containing electrode material elements or core cell elements, one end surface of the box having an opening for entry of a flowing stream of organic vapor in a carrier gas into the interior volume of the box, and the second end surface of the box having an opening for the exit of the water-containing, flowing stream from the interior volume of the box, the interior volume of the box further comprising a sieve plate placed adjacent the entry end surface for directing the entering flowing stream of organic vapor in a carrier gas over the full cross-section of the interior volume of the box as it flows toward the exit end of the volume of the box; and
the organic vapor stream delivery equipment comprising:
a container for enclosing a volume of liquid organic solvent, isolated from water-containing ambient air, the container having an inlet for admitting a pressurized flow of dry inert gas, the inlet being located above the intended volume of organic liquid, the inlet being connected with a flow passage inside the container for receiving and directing a pressurized flow of inert carrier gas into the container and below the surface of a contained liquid organic solvent volume, and the container having an outlet for the exit of a gaseous stream of inert carrier gas and vapor of the liquid organic solvent, the outlet being located above the intended volume of the organic liquid;
a single first flow line connected to the outlet of the container for conducting the flow of the gaseous stream from the outlet of the container;
a single second flow line for conducting a pressurized flow of an inert carrier gas, the first flow line and the second flow line each terminating in a flow junction in which their flow streams are combined; and
a third flow line for conduct of the inert gas and organic vapor from the outlet of the flow junction to the inlet of the reaction vessel.

2. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 1 in which the sieve is a flat plate with flow-through holes distributed over the surface of the plate and through the thickness of the plate.

3. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 2 in which the sieve plate has four edges which respectively engage the bottom wall surface, two side wall surfaces, a top wall surface, such the entire flowing stream must pass through the holes of the sieve plate.

4. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 1 in which the first flow line has a first valve for controlling the rate of flow of the gaseous stream through the flow line, the second flow line has a second valve for controlling the flow rate of the inert carrier gas through the second flow line, and the proportions of the inert gas and organic vapor in the third flow line are determined by the respective positions of the valves in the first and second flow lines.

5. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 1 in which the side wall surfaces of the box of the reaction vessel are parallel vertical rectangles which have the same lengths and heights and their lengths are longer than their heights, and in which the bottom wall surface and the top wall surface of the box are parallel horizontal rectangles which have the same lengths as the side wall surfaces.

6. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 5 in which the width of the box is sized to receive a flat stack of like-sized rectangular electrodes such that the edges of the electrodes fit against the side wall surfaces of the box and such that a flowing vapor stream is directed through pores of the electrodes.

7. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 5 in which the width of the box is sized to receive a vertical stack of like-sized rectangular electrodes such that faces of the electrodes fit against the side wall surfaces of the box and such that a flowing vapor stream is directed through pores of the electrodes.

8. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 5 in which the width of the box is sized to receive a flat stack of like-sized rectangular electrodes such that the edges of the electrodes fit against the side wall surfaces of the box and such that a flowing stream is directed through pores of the electrodes, the box further containing at least one vertical baffle, placed on top of the flat stack when the top of the stack does not extend the full height of the side wall surfaces, to prevent a flowing stream from flowing over the top of the stack of electrodes.

9. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 5 in which the width of the box is sized to receive a flat stack of like-sized rectangular cell cores of electrodes and separators such that the edges of the cell cores fit against the side wall surfaces of the box and such that a flowing stream is directed through pores of the electrodes of the cell cores.

10. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 5 in which the width of the box is sized to receive a vertical stack of like-sized rectangular cell cores such that faces of the cell cores fit against the side wall surfaces of the box and such that a flowing stream is directed through pores of the electrodes of the cell cores.

11. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 5 in which the width of the box is sized to receive a flat stack of like-sized rectangular cell cores such that the edges of the cell cores fit against the side wall surfaces of the box and such that a flowing stream is directed through pores of the electrodes of the cell cores, the box further containing at least one vertical baffle placed on top of the flat stack when the top of the stack does not extend the full height of the side wall surfaces to prevent a flowing stream from flowing over the top of the stack of cell cores.

12. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 1 in which the third flow line of the vapor stream delivery equipment contains a flow meter for measuring the flow rate of the predetermined proportions of the stream into the inlet of the reaction vessel box.

13. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 1 in which the third flow line of the vapor stream delivery equipment contains a manometer for measuring the pressure of the flow stream.

14. A combination of a reaction vessel and organic vapor stream delivery equipment as stated in claim 1 in which the exit end of the reaction vessel box contains a flow line with a valve for controlling the rate of removal of the water-containing flow stream from the reaction vessel box.

15. A combination of a reaction vessel and organic vapor stream delivery equip

Assignees

• Gm Global Tech Operations Llc

Inventors

• Liu Haijing
• Wu Meiyuan
• Yu Zhiqiang
• Zhang Xiusheng

Classifications

• F26B21/40

  using gases other than air · CPC title

• H01M4/23

  Drying or preserving electrodes after forming · CPC title

• B01J19/24 Primary

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• H01G13/04

  Drying; Impregnating · CPC title

• B01J2219/24

  Stationary reactors without moving elements inside · CPC title