The present invention relates to a bipolar battery having at least two battery cells comprising: a sealed housing, a negative end terminal, a positive end terminal, at least one biplate assembly arranged in a sandwich structure between said negative and positive end terminals, and a separator, inclu
The present invention relates to a bipolar battery having at least two battery cells comprising: a sealed housing, a negative end terminal, a positive end terminal, at least one biplate assembly arranged in a sandwich structure between said negative and positive end terminals, and a separator, including an electrolyte, arranged between each negative and positive electrode forming a battery cell. The biplate assembly is provided with an inner barrier of a hydrophobic material around the negative and the positive electrode, respectively, and an outer seal around the edge of each biplate. Each end terminal is provided with a terminal seal. The edge of each biplate is positioned close to the sealed housing to provide means to conduct heat from each biplate assembly to the ambient environment. The invention also relates to a method for manufacturing a bipolar battery and a biplate assembly.
대표청구항▼
The invention claimed is: 1. A bipolar battery comprising: a housing; a negative end terminal; a positive end terminal; at least one biplate assembly situated between said negative and said positive end terminals, said at least one biplate assembly having a biplate with a negative side and a positi
The invention claimed is: 1. A bipolar battery comprising: a housing; a negative end terminal; a positive end terminal; at least one biplate assembly situated between said negative and said positive end terminals, said at least one biplate assembly having a biplate with a negative side and a positive side, a negative electrode mounted on the negative side of the biplate, a positive electrode mounted on the positive side of the biplate, a barrier of a hydrophobic material provided on said biplate and surrounding the negative and the positive electrodes, respectively, to prevent electrolyte leakage to an adjacent cell, an outer seal arranged around an edge of said biplate to prevent adjacent biplates/end plates from touching each other, and the edge of said biplate extending into said outer seal to provide a heat conducting path away from said positive and said negative electrodes. 2. The bipolar battery according to claim 1, wherein the outer seal includes a ring of elastomer mounted on the negative and the positive sides of the biplate between the edge and the barrier. 3. The bipolar battery according to claim 2, wherein the outer seal further comprises a frame encompassing said ring of elastomer on both the negative and the positive sides of the biplate. 4. The bipolar battery according to claim 3, wherein at least one side of said frame has a tapered surface. 5. The bipolar battery according to claim 3, wherein the biplate is provided with openings through which the frame extends. 6. The bipolar battery according to claim 3, wherein said frame is provided with a guide to align the biplate assembly with adjacent biplate assemblies and end terminals. 7. The bipolar battery according to claim 6, wherein said guide comprises a tongue arranged on the frame on the positive side of the biplate, and a groove on the frame on the negative side of the biplate. 8. The bipolar battery according to claim 3, wherein said frame partly encompasses the barrier on both the negative and the positive sides of the biplate. 9. A biplate assembly comprising: a biplate having a first side and a second side; a positive electrode arranged on the first side of said biplate; a negative electrode arranged on the second side of said biplate; a barrier of a hydrophobic material provided on said biplate and surrounding the positive and the negative electrodes, respectively, to prevent electrolyte leakage to an adjacent cell; an outer seal arranged around an edge of said biplate; and the edge of said biplate extending into said outer seal to provide a heat conducting path away from said positive and said negative electrodes. 10. The biplate assembly according to claim 9, wherein the outer seal includes a ring of elastomer mounted on the first and the second sides of the biplate between the edge and the barrier. 11. The biplate assembly according to claim 10, wherein the outer seal further comprises a frame encompassing said ring of elastomer on both the first and the second sides of the biplate. 12. The biplate assembly according to claim 11, wherein at least one side of said frame has a tapered surface. 13. The biplate assembly according to claim 11, wherein the biplate is provided with openings through which the frame extends. 14. The biplate assembly according to claim 11, wherein said frame is provided with a guide to align the biplate assembly with adjacent biplate assemblies and end terminals. 15. The biplate assembly according to claim 14, wherein said guide comprises a tongue arranged on the frame on the first side of the biplate, and a groove arranged on the frame on the second side of the biplate. 16. The biplate assembly according to claim 11, wherein said frame partly encompasses the barrier on both the first and the second sides of the biplate. 17. The biplate assembly according to claim 9, wherein said outer seal is close to ambient environment. 18. The biplate assembly according to claim 17, wherein the edge of the biplate is positioned close to a part of the outer seal being close to the ambient environment.
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이 특허에 인용된 특허 (3)
Mrotek Edward N. (Grafton WI) Kao Wen-Hong (Brown Deer WI), Bipolar battery and method of making same.
Williams Mark T. (Hampstead MD) Briscoe James D. (Westminister MD) Oweis Salah M. (Ellicott City MD), Stacked cell array bipolar battery with thermal sprayed container and cell seal.
West, Jon Kenneth; Higgins, Martin Patrick; Regalado, Julius; George, Anthony, Dish shaped and pressure equalizing electrodes for electrochemical batteries.
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