Method for producing lithium-ion batteries, in particular high-power batteries, and battery obtained by this method

A method of manufacturing batteries, the method comprising:

• supplying a stack of alternating anode foils and cathode foils, each anode foil and each cathode foil having a primary body separated from a secondary body by a space that is free of any electrode material, and current-collecting substrate, each anode foil forming an anode layer of a plurality of batteries and includes at least one anode groove devoid of any anode to delimit at least a part of the space that is free of any electrode material, and current-collecting substrate, each cathode foil forming a cathode layer of the plurality of batteries and includes at least one cathode groove devoid of any cathode to delimit at least a part of the space that is free of any electrode material, electrolyte, and current-collecting substrate;
• heat treating and/or mechanically compressing the stack;
• producing, for each anode layer and each cathode layer, at least one first through-hole in the primary body and at least one second through-hole in the secondary body in a manner such that said first through-hole made in the primary body of the cathode extends in continuation of the second through-hole made in the secondary body of the anode to thereby form a first through-passage which passes through the battery from end to end, and such that said first through-hole made in the primary body of the anode extends in continuation of the second through-hole made in the secondary body of the cathode to form a second through-passage which passes through the battery from end to end;
• inserting a cathode conductor into the first through-passage to collect at least a part of the battery current and an anode conductor into the second through-passage to collect at least a part of the battery current;
• making cuts to the stack to insulate a given battery in the plurality of batteries.

An electric energy-consuming device, comprising:

• a body;
• and
• a battery to supply electric energy to said electric energy-consuming device, the battery including:
• at least one anode that includes a current-collecting substrate, at least one anode layer, and a layer of an electrolyte material or a separator impregnated with an electrolyte;
• at least one cathode that includes a current-collecting substrate, at least one cathode layer, and a layer of an electrolyte material or of a separator impregnated with an electrolyte;
• lateral edges including at least one anode connection zone and at least one cathode connection zone laterally opposite the anode connection zone;
• longitudinal edges opposed to one another,
• wherein:
• the at least one anode and the at least cathode are alternately disposed one above the other to form a unit stack successively formed by at least one anode layer, at least one layer of the electrolyte material or the separator impregnated with an electrolyte, and at least one cathode layer,
• each anode in the at least one anode and each cathode in the at least one cathode having a primary body separated from a secondary body by a space that is free of any electrode material, and current-collecting substrate, said space connecting the opposing longitudinal edges,
• each anode and each cathode includes, when viewed from overhead, at least one first through-hole made in the primary body and one second through-hole made in the secondary body,
• each first through-hole made in the primary body of the cathode extends in continuation of each second through-hole made in the secondary body of the anode so as to form a first through-passage which passes through the battery from end to end, and
• each first through-hole made in the primary body of the anode extends in the continuation of each second through-hole made in the secondary body of the cathode so as to form a second through-passage which passes through the battery from end to end,
• at least one cathode conductor received in said first through-passage to collect at least a part of the battery current flowing towards at least one cathode connection zone;
• at least one anode conductor received in said second through-passage to collect at least a part of the battery current flowing towards at least one anode connection zone;
• and
• an electrical connection support, fastened to said body.