Patent ID: 11967694
Assignee: I-TEN
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. The method according to claim 13, wherein between steps (10) and (11):
an encapsulation system is deposited on the assembled stack formed by an alternating succession of layers, namely a sequence, comprising:
a first covering layer, chosen from parylene, parylene of the F type, polyimide, epoxy resins, silicone, polyamide or any combination thereof, deposited on the assembled stack,
a second covering layer comprised of an electrically-insulating material, deposited by atomic layer deposition on said first covering layer,
wherein the sequence is repeated z times when z>1,

a last covering layer is deposited in this succession of layers of a material chosen from epoxy resin, polyethylene napthalate (PEN), polyimide, polyamide, polyurethane, silicone, sol-gel silica or organic silica,
the assembled stack in the encapsulation system is cut along two cutting planes to expose on each one of the cutting planes anode and cathode connections of the assembled stack, in such a way that the encapsulation system covers four of six faces of said assembled stack, continuously, in such a way as to obtain an elementary battery,, and after step (11),
is deposited successively, on and around, these anode and cathode connections:
a first layer of a material charged with graphite, or an epoxy resin charged with graphite,
a second layer comprising metal copper obtained from an ink charged with nanoparticles of copper deposited on the first layer,

the layers obtained are thermally treated, by infrared flash lamp in such a way as to obtain a covering of the cathode and anode connections by a layer of metal copper,
is deposited successively, on and around the layer of metal copper:
a first layer of a tin-zinc alloy deposited, by dipping in a molten tin-zinc bath, to ensure tightness of the battery at minimum cost, and
a second layer with a pure tin base deposited by electrodeposition or a second layer comprising an alloy with a silver, palladium and copper base deposited on the first layer of a tin-zinc alloy.