NOVELTY - The lithium-ion type bipolar battery comprises: first and second electrochemical cells (C1, C2) that are piled up one on the other, where each of the cells comprises an anode, a cathode (18) and an electrolyte; a bipolar current collector (1) whose surface is covered with the anode made of a lithium insertion material of the first cell and an opposite surface is covered with the cathode made of a lithium insertion material of the second cell; and a first current collector (13) that is adjacent to the bipolar collector, and comprises a surface covered with the cathode of the first cell.    USE - Lithium-ion type bipolar battery.    ADVANTAGE - The lithium-ion type bipolar battery with the sealing wall can be robustly and simply manufactured, thus reliably preventing the risk of leakage of electrolyte into the compartments of the battery.    DETAILED DESCRIPTION - The lithium-ion type bipolar battery comprises: first and second electrochemical cells (C1, C2) that are piled up one on the other, where each of the cells comprises an anode, a cathode (18) and an electrolyte; a bipolar current collector (1) whose surface is covered with the anode made of a lithium insertion material of the first cell and an opposite surface is covered with the cathode made of a lithium insertion material of the second cell, where the bipolar collector comprises, on each one of its faces, a cord of an electrical insulating material forming a peripheral zone of a sealing wall with the electrolyte of the first or second cells; a first current collector (13) that is adjacent to the bipolar collector, and comprises a surface covered with the cathode of the first cell and a cord of electrical insulating material forming a peripheral zone of a sealing wall with the electrolyte of the first cell; and a second current collector (21) that is adjacent to the bipolar collector and comprises a surface covered with the anode of the second cell and a cord of electrical insulating material forming a peripheral zone of a sealing wall with the electrolyte of the second cell. Each sealing wall consists of a cord consisting of a honeycomb matrix and is covered, on each of its two faces, with layers or sheets of electrical insulating and thermal sealing material, where each layer is connected with the current collectors. The electrical insulating and thermal sealing material fills the cells, and is provided between the two layers. Each current collector is an aluminum substrate. Thickness of each cord is approximately equal to the thickness of the electrochemical cell, preferably 5-150 mu m. Width of each cord is 0.1-2 cm. Parts of the cells of the honeycomb matrix, which are closest to the fuel cells, are filled with salts or mucilaginous compounds adapted to react with the electrolyte and to react with the moisture of the ambient air. An INDEPENDENT CLAIM is included for a method for forming a bipolar battery.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of a lithium-ion type bipolar battery.    Bipolar current collector (1)    First current collector (13)    Cathode (18)    Second current collector (21)    Electrochemical cells. (C1, C2)