公开(公告)号：US20230120151A1

公开(公告)日：2023-04-20

申请号：US17914426

申请日：2021-03-24

Applicant: SAFT

Inventor： Vincent PELE ,  Christian JORDY ,  Nadège ROUMEGOUS

IPC: H01M4/62 ,  H01M4/66 ,  H01M4/04 ,  H01M10/0562

Abstract: The present invention relates to a current collector for a negative electrode, coated with at least one electronically conducting and ionically insulating layer, to the method for producing such a collector, and to batteries containing same.

公开(公告)号：US11631866B2

公开(公告)日：2023-04-18

申请号：US16895399

申请日：2020-06-08

Applicant: SAFT AMERICA

Inventor： Thomas Greszler ,  Saori Tokuoka

IPC: H01M6/18 ,  H01M50/124 ,  H01M50/531 ,  H01M50/40 ,  H01M50/105 ,  H01M50/10 ,  H01M4/525 ,  H01M4/583 ,  H01M4/66 ,  H01M6/02 ,  H01M6/16 ,  H01M10/04

Abstract: Provided is pouch battery including an electrode assembly, and a case in which the electrode assembly is sealed and housed; the electrode assembly including a stacked structure of a sheet cathode, a sheet separator, and a sheet anode; the sheet cathode including a positive electrode active material disposed on a current collector; the sheet anode is thin conductive sheet on which lithium metal reversibly deposits on a surface thereof during discharging; the sheet anode being made of a conductive material other than lithium and having a surface substantially free from lithium metal prior to charging the battery. The pouch battery design is flexible and lightweight and provides high power density, making it a suitable replacement for conventional lithium-ion primary batteries and thermal batteries in many applications. Power can be further increased by the application of external compression. Additives and formation conditions can be tailored for forming a solid-electrolyte interface (SEI).

公开(公告)号：US11563212B2

公开(公告)日：2023-01-24

申请号：US16624632

申请日：2018-05-22

Applicant: SAFT ,  ENSICAEN ,  UNICAEN ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)

Inventor： Christian Jordy ,  Melanie Freire ,  Valerie Pralong

IPC: H01M4/505 ,  C01G45/12 ,  H01M4/36 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

Abstract: A sacrificial positive active material for a lithium-ion electrochemical element which is a compound of formula (Li2O)x (MnO2)y(MnO)z(MOa)t in which: x+y+z+t=1; 1−x−y≥0; 0.97≥x≥0.6; y≤0.45; x −0.17; y≥0; y+z>0; t≥0; 1≤a

公开(公告)号：US20220407106A1

公开(公告)日：2022-12-22

申请号：US17771287

申请日：2020-10-15

Applicant: SAFT

Inventor： Julien DEMEAUX ,  Marlène OSWALD ,  Apoline GILOT

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/58

Abstract: A gel-type electrolyte comprising a matrix which is a poly(vinylidene fluoride-co-hexafluoropropylene) polymer in which is embedded a liquid mixture comprising at least one lithium salt and a solvent comprising at least one linear carbonate, the poly(vinylidene fluoride-co-hexafluoropropylene) polymer matrix representing 5 to 95% by weight in relation to the weight of the gel-type electrolyte and the liquid mixture representing 95 to 5% by weight in relation to the weight of the gel-type electrolyte. This electrolyte exhibits increased stability with respect to oxidation and reduction.

公开(公告)号：US20220336882A1

公开(公告)日：2022-10-20

申请号：US17765534

申请日：2019-10-03

Applicant: SAFT

Inventor： Gilles HELSCHGER ,  Christophe LE GUERN ,  Jean-Louis LISKA ,  Christophe MORIN

IPC: H01M10/63 ,  H01M10/613 ,  H01M10/6567 ,  H01M10/6569 ,  H01M10/48

Abstract: A method for avoiding the spread of a thermal event in an enclosure containing several modules (1, 2, 3, 4) of electrochemical elements, said method comprising the following steps: —detecting one or more critical modules (1, 2, 3) situated in the enclosure, and affected by a thermal event (13), a module being critical when one or more parameters associated with the status of the module have reached or crossed a predetermined threshold, —spraying a coolant (12) onto, or into, the critical module or modules (1, 2, 3) for a determined duration and/or at a determined flow rate, one or more modules (4) not detected as being critical modules not receiving any coolant (12).

公开(公告)号：US11227737B2

公开(公告)日：2022-01-18

申请号：US16727523

申请日：2019-12-26

Applicant: SAFT AMERICA

Inventor： Alain Emery ,  Gary Leasure

IPC: H01H85/02 ,  H01M50/543 ,  H01H85/165 ,  H01M10/42 ,  H01M10/48 ,  H02G3/02 ,  H02J7/00

Abstract: Provided is a battery that may include a first terminal or cable, a second terminal or a cable, a thermal fuse configured to connect to the first terminal or cable and the second terminal or cable, a first sleeving layer that is disposed on the thermal fuse, and that is configured to muffle an arc explosion of the thermal fuse and encapsulate molten material generated by the arc explosion of the thermal fuse, and a second sleeving layer that is disposed on the first sleeving layer, and that is configured to encapsulate the molten material generated by the arc explosion of the thermal fuse that penetrates the first sleeving layer. An overcurrent protection system and a sleeving are also provided.

公开(公告)号：US11224118B2

公开(公告)日：2022-01-11

申请号：US16716827

申请日：2019-12-17

Applicant: SAFT AMERICA

Inventor： James Snyder ,  Jared Good

IPC: H05K1/02 ,  H01M50/50 ,  H01M50/519 ,  H01M50/502 ,  H01M50/505 ,  H01M10/42 ,  H05K1/14

Abstract: A power electronics assembly may include a power component having a thermally and electrically conductive surface; a printed circuit board having a slot; and a bussing element having a protrusion that directly contacts the thermally and electrically conductive surface of the power component via the slot of the printed circuit board, the printed circuit board being disposed between the power component and the bussing element.

公开(公告)号：US20210376384A1

公开(公告)日：2021-12-02

申请号：US16772060

申请日：2018-12-21

Applicant: SAFT

Inventor： Julien DEMEAUX ,  Marlène OSWALD

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/0569 ,  H01M10/0567 ,  H01M4/133 ,  H01M4/583 ,  H01M4/505 ,  H01M4/525

Abstract: An electrolyte composition for a lithium-ion electrochemical element, comprising: —at least one lithium tetrafluoride or hexafluoride salt, —the salts of lithium bis(fluorosulfonyl)imide LiFSI, —vinylene carbonate, —ethylene sulfate, —at least one organic solvent chosen from the group consisting of cyclic or linear carbonates, cyclic or linear esters, cyclic or linear ethers and a mixture of same. The use of this composition in a lithium-ion electrochemical element increases the service life of the element, in particular under low and high temperature cycling conditions.

公开(公告)号：US20210218095A1

公开(公告)日：2021-07-15

申请号：US16771521

申请日：2018-12-21

Applicant: SAFT

Inventor： Alexandre NARBONNE ,  Gerard RIGOBERT ,  Thierry BERLUREAU ,  Matthieu LEYKO

IPC: H01M50/152 ,  H01M50/166 ,  H01M50/531 ,  H01M50/56 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/6567 ,  H01M10/6553 ,  H01M10/6556 ,  H01M10/643 ,  H01M10/647

Abstract: The invention relates to an electrochemical element (1) comprising: a) a container (2) comprising an opening allowing the introduction of at least one electrochemical beam (7); and b) a closing part (3) for closing said container, comprising: i) at least one flat inner surface (4a, 4b, 4c) which is oriented towards the inside of the container and can be directly electrically connected to a current collector (6), ii) at least one flat outer surface (5a, 5b, 5c) which is oriented towards the outside of the container and can act as a terminal of the electrochemical element, and iii) at least one wall (8a, 8b, 8c) connecting said at least one flat inner surface to said at least one flat outer surface, said wall forming an angle of between 70 and 120° in relation to one of the two flat surfaces. The closing part of the container allows heat dissipation to be improved in the direction of the longitudinal axis of the element.

公开(公告)号：US11035906B2

公开(公告)日：2021-06-15

申请号：US16093404

申请日：2017-04-12

Applicant: SAFT

Inventor： Sebastien Laurent ,  Philippe Desprez ,  Gerard Barrailh

IPC: G01R31/392 ,  G01R31/396 ,  G01R31/388 ,  G01R31/3842

Abstract: The invention relates to a method for determining the value of one or more parameters relating to the state of health of at least one accumulator of a battery that is intended to provide electrical energy to an external application, an electronic battery management system implementing this method, and a battery provided with this system. The method comprises the steps consisting in particular in: making a series of measurements of N samples, where N≥3, of at least the voltage, the current and the cumulative capacitance, at the terminals of said accumulator, when charging or discharging said accumulator; —creating a minimization loop by varying a current value of the first parameter of the accumulator from a determined initial value, comprising the following steps: (i) calculating N estimated values of a second parameter linked to the state of charge of the accumulator from the current value of the first parameter and said N samples, respectively (ii) calculating N theoretical values of the second parameter (iii) varying the current value of the first parameter, repeating the preceding calculation steps for each variation of said current value of the first parameter, and determining the value of the first parameter as being the current value of the first parameter that minimizes the difference between the estimated values and the theoretical values of the second parameter.