DISH SHAPED AND PRESSURE EQUALIZING ELECTRODES FOR ELECTROCHEMICAL BATTERIES
First Claim
1. A bi-polar battery comprising:
- a positive mono-polar electrode unit;
a negative mono-polar electrode unit;
at least one bi-polar electrode unit stacked between said positive electrode unit and said negative electrode unit, wherein each of said electrode units are dish shaped.an electrolyte layer provided between each pair of adjacent electrode units; and
a gasket positioned about each of said electrolyte layers, wherein each of said electrolyte layers is sealed by its respective gasket and its respective pair of adjacent electrode units.
1 Assignment
0 Petitions
Accused Products
Abstract
A stacked battery has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. One or more gaskets may be included in each cell segment to seal the electrolyte within the cell segment. The electrode units may be “dish shaped” and may contain a pressure equalization valve to reduce electrode unit deflection and improve pressure equalization between cell segments. The pressure equalization valve may allow a gas to diffuse through adjacent cell segments and may substantially prevent electrolyte from diffusing through.
-
Citations
23 Claims
-
1. A bi-polar battery comprising:
-
a positive mono-polar electrode unit; a negative mono-polar electrode unit; at least one bi-polar electrode unit stacked between said positive electrode unit and said negative electrode unit, wherein each of said electrode units are dish shaped. an electrolyte layer provided between each pair of adjacent electrode units; and a gasket positioned about each of said electrolyte layers, wherein each of said electrolyte layers is sealed by its respective gasket and its respective pair of adjacent electrode units. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A bi-polar battery comprising:
-
a positive mono-polar electrode unit; a negative mono-polar electrode unit; at least one bi-polar electrode unit stacked between said positive electrode unit and said negative electrode unit, wherein the at least one bi-polar electrode unit comprises a pressure equalization valve; an electrolyte layer provided between each pair of adjacent electrode units; and a gasket positioned about each of said electrolyte layers, wherein each of said electrolyte layers is sealed by its respective gasket and its respective pair of adjacent electrode units. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A bi-polar battery comprising:
-
a positive mono-polar electrode unit; a negative mono-polar electrode unit; at least one bi-polar electrode unit stacked between said positive electrode unit and said negative electrode unit, wherein the at least one bi-polar electrode unit comprises a rupture disk valve; an electrolyte layer provided between each pair of adjacent electrode units; and a gasket positioned about each of said electrolyte layers, wherein each of said electrolyte layers is sealed by its respective gasket and its respective pair of adjacent electrode units. - View Dependent Claims (17, 18, 19, 20, 21)
-
-
22. A method for producing a stacked bi-polar battery, the method comprising:
-
providing a positive mono-polar electrode unit (MPU) that comprises a first impermeable conductive substrate and a first positive active material electrode layer coated thereon, wherein each of the MPU, the first substrate, and the first positive electrode layer are dish shaped; providing a first gasket upon the first substrate, wherein the space between the inner side walls of the first gasket and the portions of the MPU therebetween comprise a first space; providing a first separator and a first electrolyte within the first space, wherein the first separator and the first electrolyte comprise a first electrolyte layer; providing a plurality of bi-polar electrode units (BPUs) stacked upon the first gasket, wherein each of the plurality of BPUs are dish shaped; providing a terminal gasket upon the terminal BPU, wherein the space between the inner side walls of the terminal gasket and the portions of the terminal BPU therebetween comprise a terminal space; providing a terminal separator and a terminal electrolyte within the terminal space, wherein the terminal separator and the terminal electrolyte comprise a terminal electrolyte layer; providing a negative MPU stacked on top of the terminal BPU, comprising a terminal impermeable conductive substrate and a terminal negative active material electrode layer coated thereon, wherein each of the negative MPU, the terminal substrate, and the terminal negative electrode layer are dish shaped. - View Dependent Claims (23)
-
Specification