Multiple-track supercapacitor
The invention relates to a supercapacitor that comprises at least two juxtaposed complexes ( 1, 2 ) spaced by a distance d, and at least one common complex ( 3 ) located opposite the two juxtaposed complexes ( 1, 2 ) and spaced therefrom by at least one spacer ( 4 ), the spacer ( 4 ) and the complexes ( 1, 2, 3 ) being spirally wound together in order to form a coiled element.
1. A supercapacitor with a double electrochemical layer, comprising two juxtaposed complexes ( 1 , 2 ) spaced apart by a distance d along a direction parallel to a longitudinal axis, and a common complex ( 3 ) facing each of the juxtaposed complexes ( 1 , 2 ) and separated from the latter by at least one separator ( 4 ), each of said juxtaposed and common complexes including a current collector and at least one electrode, the separator ( 4 ) and said juxtaposed and common complexes ( 1 , 2 , 3 ) being wound together in turns along the longitudinal axis in order to form a wound element, wherein the separator ( 4 ) includes at least two portions spaced apart by a distance w of less than the distance d, each of the portions entirely separating said juxtaposed and common complexes ( 1 , 2 , 3 ) facing each other.
2. The supercapacitor according to claim 1 , wherein the distance w is greater than 1 mm.
3. The supercapacitor according to claim 1 , wherein said juxtaposed and common complexes ( 1 , 2 , 3 ) comprises two opposite electrodes ( 12 , 13 , 22 , 23 , 32 , 33 ) on either side of a current collector ( 11 , 21 , 31 ) so that each electrode has an electrically conducting surface common with a respective face of the current collector.
4. The supercapacitor according to claim 1 , wherein the common complex ( 3 ) comprises at least two juxtaposed electrodes ( 32 a , 32 b ) spaced apart by a distance g, each electrode being positioned facing an electrode ( 12 , 22 ) of said juxtaposed complexes ( 1 , 2 ).
5. The supercapacitor according to claim 4 , wherein the distance g is equal to the distance d.
6. The supercapacitor according to claim 4 , wherein the electrodes ( 32 a , 32 b , 33 a , 33 h ) of the common complex ( 3 ) are of different thicknesses.
7. The supercapacitor according to claim 4 , wherein the widths of the electrodes ( 32 a , 32 b , 33 a , 33 b ) of the common complex ( 3 ) are different.
8. The supercapacitor according to claim 1 , wherein the thicknesses of the electrodes ( 12 , 13 , 22 , 23 ) of the juxtaposed complexes ( 1 , 2 ) are different.
9. The supercapacitor according to claim 1 , wherein the lengths of the said juxtaposed and common complexes ( 1 , 2 , 3 ) facing each other are different.
10. The supercapacitor according to claim 1 , wherein the widths of the electrodes ( 12 , 13 , 22 , 23 ) of the juxtaposed complexes ( 1 , 2 ) are different.
11. The supercapacitor according to claim 1 , wherein the electrodes of said juxtaposed and common complexes ( 1 , 2 , 3 ) are of different natures.
12. The supercapacitor according to claim 1 , wherein the lengths, widths, thicknesses and natures of the electrodes of the juxtaposed complexes ( 1 , 2 ) are equal.
13. The supercapacitor according to claim 1 , wherein a base of the wound element orthogonal to the winding axis is of circular shape.
14. The supercapacitor according to claim 13 , wherein the angles of the wound element are non-protruding.
15. The supercapacitor according to claim 1 , wherein a base of the wound element orthogonal to the winding axis is of hexagonal shape.
16. The supercapacitor according to claim 1 , wherein a base of the wound element orthogonal to the winding axis is of triangular shape.
17. The supercapacitor according to claim 1 , wherein a base of the wound element orthogonal to the winding axis is of orthogonal shape.
18. The supercapacitor according to claim 1 , wherein a base of the wound element orthogonal to the winding axis is of rectangular shape.
19. The supercapacitor according to claim 1 , wherein a base of the wound element orthogonal to the winding axis is of elliptical shape.
20. The supercapacitor according to claim 1 , wherein the juxtaposed complexes have terminals exterior to said supercapacitor.
21. The supercapacitor according to claim 1 , further comprising at least a third juxtaposed complex and a corresponding common complex for each said juxtaposed complex.
22. A module comprising:
a casing; and
at least one supercapacitor disposed in said casing, said supercapacitor with a double electrochemical layer, comprising two juxtaposed complexes ( 1 , 2 ) spaced apart by a distance d along a direction parallel to a longitudinal axis, and a common complex ( 3 ) facing each of the juxtaposed complexes ( 1 , 2 ) and separated from the latter by at least one separator ( 4 ), each of said juxtaposed and common complexes including a current collector and at least one electrode, the separator ( 4 ) and said juxtaposed and common complexes ( 1 , 2 , 3 ) being wound together in turns along the longitudinal axis in order to form a wound element, wherein the separator ( 4 ) includes at least two portions spaced apart by a distance w of less than the distance d, each of the portions entirely separating said juxtaposed and common complexes ( 1 , 2 , 3 ) facing each other.
23. The module according to claim 22 , further comprising;
at least one standard supercapacitor including a cylindrical wound element including at least two electrodes and at least one separator wound together in turns in order to form a wound element positioned in the casing; and
a lid for closing the casing,
said standard supercapacitor being electrically connected to the supercapacitor having the two juxtaposed complexes and the common complex via at least one connecting strap.