摘要:
The present technology relates to laminates for lithium-ion batteries comprising at least one cathode layer; at least one anode layer; at least one electrolyte layer disposed between the at least one cathode layer and the at least one anode layer; and a viscosity modifier present on at least a portion of the laminate which limits the penetration of reactive fluids into the laminate and thereby controls the extent of oxidization of the anode, and prevents the formation of dendrites in said laminate. The present technology further relates to methods for preparing such laminates, and lithium-ion batteries comprising same.
摘要:
A working roller for a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film is disclosed. The working roller has a cylindrical center portion defining a central axis, the center portion having an outer surface defining a lamination surface; and first and second frustoconical portions extending from first and second ends of the center portion respectively. When the central axis is straight, an angle between the outer surface of the center portion and an outer surface of each of the first and second frustoconical portions is less than 0.05 degrees. A width of the center portion is greater than a width of each of the first and second frustoconical portions. The width of the center portion is less than a sum of the widths of the first and second portions. A rolling mill having two such working rollers is also disclosed.
摘要:
A cross-linked copolymer is provided, including at least repeating units of poly(alkylene oxide) and at least repeating units of lithium polystyrene-sulfonyl(trifluoromethylsulfonyl)imide (PSTFSILi), as well as the use of such a cross-linked copolymer for preparing a solid polymer electrolyte, a solid polymer electrolyte having the cross-linked copolymer, and a battery, for example a lithium metal polymer (LMP) battery, including the solid polymer electrolyte.
摘要:
A working roller for a rolling mill for laminating a sheet of alkali metal or alloy thereof into a film is disclosed. The working roller has a cylindrical center portion defining a central axis, the center portion having an outer surface defining a lamination surface; and first and second frustoconical portions extending from first and second ends of the center portion respectively. When the central axis is straight, an angle between the outer surface of the center portion and an outer surface of each of the first and second frustoconical portions is less than 0.05 degrees. A width of the center portion is greater than a width of each of the first and second frustoconical portions. The width of the center portion is less than a sum of the widths of the first and second portions. A rolling mill having two such working rollers is also disclosed. A laminated sheet of alkali metal or alloy thereof obtained by the working roller of the present technology is also disclosed.
摘要:
A solid polymer electrolyte for a battery is disclosed. The solid polymer electrolyte includes solid polymer electrolyte including a diblock copolymer AB or a triblock copolymer of the BAB type, in which block A is an unsubstituted polyethylene oxide chain having a number-average molecular weight less than 80,000 g/mol; block B is an anionic polymer prepared from one or more monomers selected from vinyl monomers and derivatives thereof to which is grafted an anion of lithium salt, and a second monomer having cross-linking functions.
摘要:
The present invention relates to the field of lithium-sulphur batteries having high energy and power densities. In particular the present invention relates to a lithium-sulphur battery comprising a porous separator made of biaxially oriented polypropylene and to its process of manufacture.
摘要:
The present invention relates to an energy storage module (10) able to contain a plurality of energy storage elements (14), the module comprising an envelope (16) comprising at least one plurality of lateral walls and two end walls (18A, 18B) dimensioned so as to surround the energy storage elements, at least one member for placing in contact (22) made at least partially from a thermally conducting material, intended to be placed between at least one energy storage element and a lateral wall of the module, termed the reference wall (20A), said member comprising a first contact face (24A) and a second contact face (30A) which are associated respectively with the reference wall (20A) and said energy storage element or elements (14), one at least of said first (24A) and second (30A) contact faces being adapted to abut against one of the reference wall (20A) or of said element or elements (14), and said member being configured so that the distance between the first and second contact faces can vary. The invention also relates to a method of assembling a module.
摘要:
The invention relates to a method for charging a battery comprising rechargeable cells. According to the invention, to perform the ith charge of the battery, where i≧2, connection of the charging terminals to the charger is detected triggering connection of the cells to their bypass circuit during a pre-emptive bypass time (TPji). Next, for each cell, during a second phase (Cji), the bypass circuit is disconnected from the cell until the voltage of the cell reaches a preset voltage, the pre-emptive bypass time (TPji) for the ith charge having been calculated as a function of the total connection time, during at least one preceding charge, of the bypass circuit associated with this cell, until all the cells have reached the preset voltage. At least one length of time allowing the first time (TPji) for the ith charge and/or said total connection time to be determined was memorized in a memory of the battery during this at least one preceding charge.
摘要:
The invention relates to a device for holding power storage assemblies (3), arranged side by side in a power storage module, in position, the device including: a plate (1) made of an electrically insulating material and extending along a main plane (P); recesses (2) provided in the plate, wherein each recess is to receive a respective power storage assembly such that the longitudinal axis of the storage assembly extends perpendicular to the main plane (P); and at least one holder made of an insulating material and intended for receiving an electrical connection means for electrically connecting at least one power storage assembly to an electronic board of the module.
摘要:
The invention relates to a cover (40) for an energy storage unit, which is to be inserted at an end of a casing (20) in which a capacitive element (30) of the unit is arranged, the cover comprising at least one sidewall (43) which to be arranged opposite at least one sidewall of the casing and two end walls (41, 42), characterized in that a plurality of cavities (46, 48) are provided in the cover, at least one first cavity (46) opening onto the sidewall(s) (43) and onto an end wall (41), and at least one second cavity (48) opening onto the sidewall(s) (43) and onto the other end wall (42), the first cavity or cavities opening onto the sidewall(s) (43) in one or more first portions extending over a portion of the periphery of the sidewall(s), while the second cavity or cavities (48) open onto the sidewall(s) (43) in one or more second portions extending over a portion of the periphery of the sidewall(s).