Sandwich panels with battery cores

Patent metadata

Field	Value
Publication number	US-10439248-B2
Application number	US-201415111602-A
Country	US
Kind code	B2
Filing date	Nov 26, 2014
Priority date	Jan 27, 2014
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

Systems and methods are disclosed for enhancing the construction and application of batteries by providing a battery system comprising at least one electrochemical panel with at least one electrochemical cell disposed therein, which is configured to enable multi-purpose functionality and applicability of the battery system. Embodiments provide for electrodes and/or current collectors of each electrochemical cell that are transversely orientated with respect to each face of an electrochemical panel. Some embodiments provide for a separator pouch disposed about at least one electrode and/or current collector to electrically insulate the electrode and/or current collector from a structure component of the device. Each electrochemical panel is configured to enable electrical communication with another electrochemical panel and/or an ancillary electric circuit. Each electrochemical panel is configured enable utilization thereof as a structural component of an ancillary structure.

First claim

What is claimed is:

1. A device, comprising:
at least one electrochemical cell, comprising:
a first layer, a second layer adjacent the first layer, a third layer adjacent the second layer, and a fourth layer adjacent the third layer;
wherein:
the first layer is configured as a first insulative region made from a separator material;
the second layer is configured as a positive current collector coated with a cathode coating;
the third layer is configured as a second insulative region made from a separator material;
the fourth layer is configured as a negative current collector coated with an anode coating;
the separator material of the first and third insulative regions encases the positive current collector but not the negative current collector; and
the electrochemical cell is configured to receive and retain electrolyte;

at least one electrochemical panel, comprising a structure having a first face, a second face, a first sidewall, and a second sidewall that are attached to each other to enclose the at least one electrochemical cell, wherein the structure is configured to fluidly seal each electrochemical cell within the structure; and
wherein:
at least one of the second layer and the fourth layer is affixed to at least one of the first face and second face;
the structure is configured such that at least one of the second layer and fourth layer is transversely orientated with respect to at least one of the first face and the second face;
the separator material is configured to electrically insulate the positive current collector from each electrochemical panel; and

the first and second faces are configured to carry at least a portion of any in-plane loads and flexural loads induced upon the device, while at least one of the positive and the negative current collector is configured to carry at least a portion of transverse shear loads arising from bending moment gradients in the at least one electrochemical panel.

2. The device recited in claim 1 , further comprising at least one electrolyte fill port disposed on the structure and in fluid communication with at least one of the first layer and the third layer.

3. The device recited in claim 1 , wherein the first face is parallel to the second face.

4. The device recited in claim 1 , wherein at least one of the first layer and third layer is configured as a flat member and perpendicularly oriented with respect to at least one of the first face and second face.

5. The device recited in claim 1 , wherein the separator material is tri-layer polypropylene/polyethylene/polypropylene.

6. A device, comprising:
at least one electrochemical cell, comprising:
a first layer, a second layer adjacent the first layer, a third layer adjacent the second layer, and a fourth layer adjacent the third layer;
wherein:
the first layer is configured as a first insulative region made from a separator material; region,
the second layer is configured as a positive current collector coated with a cathode coating;
the third layer is configured as a second insulative region made from a separator material;
the fourth layer is configured as a negative current collector coated with an anode coating;
the first layer and the third layer form a separator pouch that encases the second layer but not the fourth layer; and
the electrochemical cell is configured to receive and retain electrolyte;

at least one electrochemical panel, comprising a structure having a first face, a second face, and a first sidewall, and a second sidewall that are attached to each other to enclose the at least one electrochemical cell, wherein the structure is configured to fluidly seal each electrochemical cell within the structure; and
wherein:
at least one of the second layer and the fourth layer is affixed to at least one of the first face and second face;
the structure is configured such that at least one of the second layer and fourth layer is transversely orientated with respect to at least one of the first face and the second face;
the second layer and/or the fourth layer is affixed to at least one of the first face and second face via a bond connecting through the separator pouch, the separator pouch and the bond being configured to electrically insulate the second layer from the first face and the second face; and
the first and second faces are configured to carry at least a portion of any in-plane loads and flexural loads induced upon the device, while at least one of the positive and the negative current collector is configured to carry at least a portion of transverse shear loads arising from bending moment gradients in the at least one electrochemical panel.

7. The device of claim 6 , wherein:
the separator pouch is configured to be porous to enable through-flow of electrolyte to and/or from the encased layer, but electrically insulating so as to at least impede electric conductance.

8. The device recited in claim 7 , further comprising at least one electrolyte fill port disposed on the structure and in fluid communication with at least one of the first layer and the third layer.

9. The device recited in claim 7 , wherein the first face is parallel to the second face.

10. The device recited in claim 7 , wherein at least one of the first layer and third layer is configured as a flat member and perpendicularly orientated with respect to at least one of the first face and second face.

11. The device recited in claim 7 , wherein the separator pouch comprises tri-layer polypropylene/polyethylene/polypropylene.

12. A device, comprising:
at least one electrochemical cell, comprising:
a first layer, a second layer adjacent the first layer, a third layer adjacent the second layer, and a fourth layer adjacent the third layer;
wherein:
wherein the first layer is configured as a first insulative region made from a separator material;
the second layer is configured as a positive current collector coated with a cathode coating;
the third layer is configured as a second insulative region made from a separator material;
the fourth layer is configured as a negative current collector coated with an anode coating;
the separator material of the first and third insulative regions encases the positive current collector but not the negative current collector; and
the electrochemical cell is configured to receive and retain electrolyte;

at least one electrochemical panel, comprising a structure having a first face, a second face, and a first sidewall, and a second sidewall that are attached to each other to enclose the at least one electrochemical cell, wherein the structure is configured to fluidly seal each electrochemical cell within the structure;
at least one electrolyte channel disposed within the structure to at least perform one of facilitate directional flow of the electrolyte and form galleries for the electrolyte to reside; and,
wherein:
at least one of the second layer and the fourth layer is affixed to at least one of the first face and second face;
the structure is configured such that at least one of the second layer and fourth layer is transversely orientated with respect to at least one of the first face and the second face;
at least one electrochemical cell comprises a wound strip of the first, second, third, and fourth layers;
the separator material is configured to electrically insulate the positive current collector from each electromechanical panel;
the first and second faces are configured to carry at least a portion of any in-plane loads and flexural loads induced upon the device, while at least one of the positive and the negative current collector is configured to carry at least a portion of transverse

Assignees

• Penn State Res Found

Inventors

• Rahn Christopher D
• Bakis Charles E
• Hickner Michael
• Zhang Yancheng

Classifications

• H01M50/457

  comprising three or more layers · CPC title

• H01M50/417

  Polyolefins · CPC title

• H01M10/058

  Construction or manufacture · CPC title

• H01M10/0431

  Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title

• H01M6/42

  Grouping of primary cells into batteries (H01M6/40 takes precedence) · CPC title