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1. WO2020110074 - MULTICAVITY ELECTRIC POWER ACCUMULATOR

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[ EN ]

CLAIMS

1. A high capacity and resistance electric power accumulator comprising:

- an outer insulating case (20), configured for containing an electrolyte,

- a block (10), accommodated inside said insulating case (20), comprising a plurality of conductive material regions, forming positive electrodes (11) and negative electrodes (12), alternating with a plurality of insulating material regions, forming separators (13),

- a plurality of adjacent cavities (14), forming the structure of said regions (11 , 12) and the spaces between said regions, each provided with a plurality of holes (142) on their own wall (141 ) so that, whenever the block (10) is dipped into the electrolyte, the latter can flow and also enter the inside of the cavity,

characterized in that

said cavities (14) are aligned and superimposed to each other in such a way as to form an alveolar structure suitable for accommodating alternatively ducts (40) passing through a portion of the block (10) and configured in such a way as to make the electrolyte flow internally to the accumulator and to extract it therefrom, or ducts (50) passing through the complete block (10) and configured in such a way as to define volumes separated from that delimited by the outer insulating case (20).

2. The electric power accumulator according to claim 1 characterized in that the ducts (40), passing through a portion of the block (10), are connected to means for extracting the electrolyte, sending it to means for varying its temperature, and for re inserting it in the case (20), said means being placed outside the accumulator.

3. The electric power accumulator according to claim 2 characterized in that the electrolyte temperature variation means are of a passive or active type.

4. The electric power accumulator according to claim 1 characterized in that the ducts (50), passing through the entire block (10), are connected to means for allowing a continuous flow of a fluid suitable for allowing an electrolyte temperature variation by induction, said means being placed outside the accumulator.

5. The electric power accumulator according to claim 1 characterized in that the ducts (50) extend all throughout the body of the accumulator and operate inside the block (10) capillary and in particular vascular way inside the electrodes and the separators.

6. The electric power accumulator according to the previous claims characterized in that every cavity (14) and every space between two adjacent cavities have a hole on their top, so as to make it easier for gas to go out upwards and prevent air bubbles from remaining trapped inside said cavity (14).

7. The electric power accumulator according to the previous claims characterized in that every cavity (14) of the conductive material regions forming the positive electrodes (11) and the negative electrodes (12) is permeable to electrolyte flow and is configured in such a way that the precipitate of the active material that forms during the operation can spread all over the inner surfaces of said cavities.

8. The electric power accumulator according to the previous claims characterized in that every cavity (14) has a shape suitable for forming an alveolar structure by way of an alignment and superimposition of a plurality thereof.

9. The electric power accumulator according to the previous claims characterized in that every cavity (14) has a spherical shape or alternatively a cubic, tetrahedron, octahedron, dodecahedron, or icosahedron shape.

10. The electric power accumulator according to the previous claims characterized in that the outer insulating case (20) is provided with holes, recesses, protrusions, or depressions which can be taken advantage of for assembling external components, as well as with inspection holes provided with transparent lids or removable lids.