Abstract: A thermal regulation device for a member to be heated or to be cooled includes a fluid-circulation conduit having at least one flexible part able to deform according to the pressure of the fluid within the conduit, and at least one contact zone coming into contact with said member when the pressure of the fluid in the conduit is higher than a given pressure and which is moved away from said member when the pressure of the fluid in the conduit is below the given pressure, the thermal regulation device including regulation means able to vary the pressure of the fluid in the conduit.

Abstract: The invention relates to an electrochemical element and a battery comprising one or more electrochemical elements, with integrated sensors and/or actuators, in particular including an application for monitoring the operation of an electrochemical element or a Li-ion battery, and/or triggering actions in such an element or such a battery, intended to secure the element or the battery. The electrochemical element (1) comprises a closed shell (2) defining an internal volume and a beam (3) arranged therein having alternating positive and negative electrodes respectively connected to two positive and negative electrical output terminals housing separators, the beam (3) being impregnated with electrolyte and further connected by connection means (4) to one (5) of the electrical output terminals.

Abstract: A method for treating a surface of a strip or film, the strip or film being made of lithium or a lithium-based alloy, the method comprising a step of radiating at least one portion of the surface of the strip or film with a laser beam, the radiating step being carried out in a controlled atmosphere, the laser beam radiating the entire area of the at least one portion of the surface of the strip or film.

Abstract: The invention relates to an electrochemical element and a battery comprising one or more electrochemical elements, with integrated sensors and/or actuators, in particular including an application for monitoring the operation of an electrochemical element or a Li-ion battery, and/or triggering actions in such an element or such a battery, intended to secure the element or the battery. The electrochemical element (1) comprises a closed shell (2) defining an internal volume and a beam (3) arranged therein having alternating positive and negative electrodes respectively connected to two positive and negative electrical output terminals housing separators, the beam (3) being impregnated with electrolyte and further connected by connection means (4) to one (5) of the electrical output terminals.

Abstract: A lithium accumulator including: a current collector; a stack of at least two layers arranged on at least one surface of the current collector, wherein a first layer is in contact with the surface of the current collector and includes a mixture of at least two compounds selected from a lithiated manganese phosphate, a lithiated transition metal oxide, and a lithiated spinel-type manganese oxide; and an outer layer including an active material having at least 90% of a lithiated iron phosphate.

Abstract: The invention relates to a lithium accumulator comprising: a) a current collector (4); and b) a stack of at least two layers (1, 2, 3) arranged on at least one surface of the current collector, wherein a first layer (1) is in contact with the surface of the current collector and comprises a mixture of at least two compounds selected from: a lithiated manganese phosphate, a lithiated transition metal oxide, and a lithiated spinel-type manganese oxide; and an outer layer (2) comprises an active material comprising at least 90% of a lithiated iron phosphate.

Abstract: A safety current interrupter device for a rechargeable cell is provided comprising a deformable material (2) adapted to deform when the temperature reaches a threshold value, a deformable membrane (3) adapted to deform under the effect of pressure and/or deformation of the deformable material (2), and an electrically conductive link member (4), adapted to break as a result of the deformation of the deformable membrane (3).

Abstract: A safety current interrupter device for a rechargeable cell is provided comprising a deformable material (2) adapted to deform when the temperature reaches a threshold value, a deformable membrane (3) adapted to deform under the effect of pressure and/or deformation of the deformable material (2), and an electrically conductive link member (4), adapted to break as a result of the deformation of the deformable membrane (3).

Abstract: A method is disclosed in which the plates 2 of an electrode 1 are connected to a terminal 3 of a storage cell by clamping the plates 2 between the terminal 3 and a holding member such as a ring 6 or a washer 12 and then welding the plates 2 to the terminal 3 by transparent laser welding through the holding member. The plates 2 are preferably bent over a face of the terminal 3 before they are clamped. A tool 14 presses on an area 15 of the washer 12 to clamp the plates 2. The washer 12 and the plates 2 are then transparent laser welded to the terminal 3 along a weld line 16 around the area 15 on which the washer 12 bears. A storage cell that can be obtained by the above method is also disclosed.

Abstract: A method is disclosed in which the plates 2 of an electrode 1 are connected to a terminal 3 of a storage cell by clamping the plates 2 between the terminal 3 and a holding member such as a ring 6 or a washer 12 and then welding the plates 2 to the terminal 3 by transparent laser welding through the holding member. The plates 2 are preferably bent over a face of the terminal 3 before they are clamped. A tool 14 presses on an area 15 of the washer 12 to clamp the plates 2. The washer 12 and the plates 2 are then transparent laser welded to the terminal 3 along a weld line 16 around the area 15 on which the washer 12 bears. A storage cell that can be obtained by the above method is also disclosed.