Abstract: The invention resolves the problem of swelling of sealing electrochemical cells of prismatic format when they are assembled side by side in a grouping box by proposing a battery comprising at least two electrochemical cells (1a, 1b) of prismatic format, wherein the electrochemical cells are separated by a rigid wedge (2) having a hardness greater than or equal to 90 Shore A according to the standard ASTM D 2240 and by a flexible wedge (3) having a hardness of up to 60 Shore A according to the standard ASTM D 2240, the rigid wedge and the flexible wedge being electrically insulating.

Abstract: The invention resolves the problem of swelling of sealing electrochemical cells of prismatic format when they are assembled side by side in a grouping box by proposing a battery comprising at least two electrochemical cells (1a, 1b) of prismatic format, wherein the electrochemical cells are separated by a rigid wedge (2) having a hardness greater than or equal to 90 Shore A according to the standard ASTM D 2240 and by a flexible wedge (3) having a hardness of up to 60 Shore A according to the standard ASTM D 2240, the rigid wedge and the flexible wedge being electrically insulating.

Abstract: A safety device (1) for a lithium electrochemical generator battery, including a box (100), configured to house a plurality of lithium electrochemical generators; a cover (200) arranged gas-tightly on the opening (130) of the box; an opening (120) forming a vent situated in one of the walls of the box (100) or situated in the cover (200); a conduit (300) having two openings (311, 312) where one of the openings (311) is gas-tightly connected to the opening (120) forming a vent of the box; a covering part (400) positioned gas-tightly at an opening of a wall of the compartment and the second opening (312) of the conduit, and where said covering part comprises a portion (410) adapted to tear at a threshold pressure Ps; where the walls of the box, the cover, the conduit and the covering part are secured to each other so as to ensure sealing against the gases up to a pressure above the threshold pressure Ps.

Abstract: A safety device (1) for a lithium electrochemical generator battery, including a box (100), configured to house a plurality of lithium electrochemical generators; a cover (200) arranged gas-tightly on the opening (130) of the box; an opening (120) forming a vent situated in one of the walls of the box (100) or situated in the cover (200); a conduit (300) having two openings (311, 312) where one of the openings (311) is gas-tightly connected to the opening (120) forming a vent of the box; a covering part (400) positioned gas-tightly at an opening of a wall of the compartment and the second opening (312) of the conduit, and where said covering part comprises a portion (410) adapted to tear at a threshold pressure Ps; where the walls of the box, the cover, the conduit and the covering part are secured to each other so as to ensure sealing against the gases up to a pressure above the threshold pressure Ps.

Abstract: An electronics package for a battery (1) comprises connectors (14) providing connection to internal components of the battery, an interface connector (15) with an external application, and a charging circuit (20) for the battery. The charging circuit and connectors are integrated into a same package (10) designed to be fixed to the battery. Application to a battery providing back up power.