Absstract of: FR3108208A1

L'invention porte sur un bloc batterie (10) notamment pour véhicule automobile, ledit bloc batterie (10) comportant un ensemble (11') de modules de puissance (11) connectés électriquement entre eux et à des bornes de sorties (B+, B-) par l'intermédiaire de pistes électriquement conductrices (12), chaque module de puissance (11) comprenant plusieurs cellules électrochimiques (14), - ledit bloc batterie (10) comportant en outre au moins un interrupteur électrique piloté (18), ledit interrupteur électrique piloté (18) étant conformé pour ouvrir une piste électriquement conductrice (12). Figure 3

Absstract of: US2021286018A1

Provided are a battery management system and a battery management method using the same. According to the present invention, it is possible to select high-risk battery cells that are highly likely to be out of an operating voltage range by applying a change amount according to SoH for each of the battery cells to each SoC for each of the battery cells, and calculate the representative SoH of the battery pack based on the selected high-risk battery cells, and then calculate the actual usable capacity of the battery pack.

Absstract of: US2021286015A1

An automated system and method to investigate degradation of cathode materials in batteries via atomistic simulations, and in particular by simulating the creation of atomistic defects in the cathode material, which occurs during charge cycling. A systematic procedure relates the degradation of battery performance metrics to underlying structural changes due to atomic rearrangements within the material, for example through density functional theory simulations. The performance metrics modeled with this approach include the Open Cell Voltage (OCV) as well as the discharge capacity curve.

Absstract of: US2021288353A1

Methods and electronic devices for estimating state of charge (SOC) of a battery pack. Various embodiments provide a model comprising an (electrical) equivalent circuit model, an electrochemical (thermal) model, and a (convective) thermal model. The model estimates parameters pertaining to each cell of the battery pack individually, and determines the variations in the values of the parameters among each of the cells of the battery pack. The parameters include capacity, temperature current, voltage, and SOC. The parameters are computed based on at current drawn by the battery pack, electrochemical parameters, thermal parameters, and cell internal and connection resistances of the individual cells. Various embodiments compute battery pack uptime, chargeable capacity of the battery pack and SOC of the battery pack, based on the values of the parameters.

Absstract of: US2021284554A1

A method of manufacturing electrodes from a lithium-containing brine, said method comprising the steps of: providing an electrochemical cell comprising at least a cathodic chamber filled with a lithium-containing brine; contacting a lithium-intercalating electrode material with the lithium-containing brine; applying an electrical current to the cell for a duration sufficient to allow intercalation of lithium from the brine onto electrode material; and stopping the electrical current.

Absstract of: US2021284805A1

A composition of matter useful in an electrolyte, comprising a polymer including: a repeat unit, the repeat unit including a backbone section; and a side chain attached to the backbone section, wherein the side chain includes a ligand moiety configured to ionically bond to a lithium ion. The polymer has a glass transition temperature (e.g., less than room temperature) wherein the polymer is in a solid state during operation of a lithium ion battery comprising an electrolyte including the polymer.

Absstract of: US2021283670A1

Presented are metalworking systems for forming metallic workpieces, methods for making such workpieces and methods for operating such systems, and battery cell tabs bent by a multistage plunger press. A metalworking system includes a plunger fixture that mounts adjacent metallic workpieces, and a plunger head movably mounted to the plunger fixture to move between activated and deactivated positions. A first row of plunger fingers is mounted to the plunger head and moves in one direction to press against and bend one metallic workpiece a predefined bend angle. Likewise, a second row of plunger fingers is mounted to the plunger head and moves in an opposite direction to press against and bend another metallic workpiece another predefined bend angle. The plunger head then moves to the activated position, in tandem with the plunger fingers bending the metallic workpieces, to cause the plunger fingers to bend the workpieces additional respective bend angles.

Absstract of: US2021283662A1

Methods for detecting electronics amongst a plurality of recycling materials.

Absstract of: US2021284005A1

A system is provided to prevent the burning of a vehicle or human injury caused by a fire spread from a battery to a vehicle in the event of a fire in the battery. The battery release system includes a controller that outputs a control signal to release a battery pack from a vehicle to separate the battery pack therefrom when the controller determines that a fire occurs in the battery pack. A mounting structure is rotatably mounted to a body frame and supports the battery pack. A locking device is mounted to the body frame and the locking device locks the mounting structure supporting the battery pack to the body frame, and releases the locked state of the mounting structure in response to the control signal of the controller.

Absstract of: US2021283978A1

A method of operating a cooling system for a vehicle including providing a cooling system including a coolant loop having a coolant valve, a first refrigerant loop having a first compressor and a first chiller configured to exchange heat with the coolant loop, a second refrigerant loop having a second compressor and a second chiller configured to exchange heat with the coolant loop, and a cooling system controller operably coupled to the first compressor, the second compressor, and the coolant valve. The coolant valve is configured to selectively direct or prevent the flow of coolant between the battery and each of the first chiller and the second chiller. The method further includes operating the cooling system in one of a second chiller only mode, a first chiller only mode, an air conditioning (AC) only mode, a first refrigerant loop only mode, and a dual refrigerant loop mode.

Absstract of: US2021289301A1

Embodiments of the invention include a method of preventing ferrite migration in a hearing aid including an antenna stack and a battery stack wherein the antenna stack sits on the battery stack, the method comprising the steps of: conformally coating the top and sides of the antenna stack using a conformal coating material; and separately coating all the surfaces of the battery stack using a separate material.

Absstract of: US2021288317A1

A novel hybrid lithium-ion anode material based on coaxially coated Si shells on vertically aligned carbon nanofiber (CNF) arrays. The unique cup-stacking graphitic microstructure makes the bare vertically aligned CNF array an effective Li+ intercalation medium. Highly reversible Li′ intercalation and extraction were observed at high power rates. More importantly, the highly conductive and mechanically stable CNF core optionally supports a coaxially coated amorphous Si shell which has much higher theoretical specific capacity by forming fully lithiated alloy. Addition of surface effect dominant sites in close proximity to the intercalation medium results in a hybrid device that includes advantages of both batteries and capacitors.

Absstract of: US2021284541A1

Provided are silicon fine particles that are effectively prevented from being oxidized and have a crystallite diameter close to that of an amorphous substance. The silicon fine particles of the present invention have an average diameter of primary particles of 30 to 900 nm, a crystallite diameter of less than 10 nm, a chlorine concentration of 1 to 10% by mass, and a ratio (Co/S) of an oxygen concentration (Co: % by mass) to a specific surface area (S: m2/g) of less than 0.05. The method for producing silicon fine particles of the present invention includes: heating a gas containing trichlorosilane to a temperature of 600 to 950° C. in a reactor and thermally decomposing the trichlorosilane to produce a silicon fine particle precursor containing chlorine, then collecting the silicon fine particle precursor, and then heating and dechlorinating the collected silicon fine particle precursor at a temperature of 750 to 900° C. under supply of an inert gas or under reduced pressure.

Absstract of: US2021284534A1

A method of production of a solid electrolyte, which comprises:a step of obtaining a mixture comprising a sulfide solid electrolyte and a tertiary alcohol including 9 or less carbon atoms, anda step of removing the tertiary alcohol from the mixture.

Absstract of: DE102020106414A1

Die vorliegende Erfindung bezieht sich auf eine Modulsicherung (102) für den Transport eines Batteriemoduls (100), wobei die Modulsicherung (102) ein Gehäuse (112) aus einem elektrisch isolierenden Material und ein elektrisches Trennelement (204) aufweist, wobei das Trennelement (204) so von dem Gehäuse (112) umschlossen ist, dass ein erster elektrischer Anschluss (206) des Trennelements (204) in einer ersten Schnittstelle (210) des Gehäuses (112) zugänglich ist und ein zweiter elektrischer Anschluss (208) des Trennelements (204) in einer zweiten Schnittstelle (114) des Gehäuses (112) zugänglich ist.

Absstract of: DE102020106600A1

Es wird ein Batteriemodulgehäuse (1) zum Aufnehmen von Batteriemodulen, insbesondere für ein Kraftfahrzeug (100), aufweisend eine Mehrzahl von Wandungen (2) und einen Kühlmittelanschluss (4) vorgeschlagen, wobei in einer Wandung (2) ein Kühlmittelkanal (5) vorgesehen ist, wobei die Wandung (2) eine Öffnung (6) vom Kühlmittelkanal (5) zu einer Außenseite (2.1) der Wandung (2) hin aufweist, wobei an der Außenseite (2.1) umlaufend um die Öffnung (6) und auf der Öffnung (6) eine Dichtung (7) angeordnet und vorzugsweise mit der Außenseite (2.1) verklebt ist, wobei in der Dichtung (7) eine den Kühlmittelkanal (5) mit dem Kühlmittelanschluss (4) verbindende Kühlmittelleitung (7.1) vorgesehen ist. Ferner wird ein Kraftfahrzeug (100) vorgeschlagen.

Absstract of: WO2021179300A1

An electrochemical device, comprising a positive electrode, a negative electrode, and an electrolyte, wherein the electrolyte comprises an anion of a phosphorus pentoxide functional group of the specific structure. By adding the anion to the electrolyte, both the low-temperature discharge performance and the high-temperature storage performance of the electrochemical device can be improved and considered, and the cycle stability of the electrochemical device at room temperature and high temperature can be improved.

Absstract of: WO2021183493A1

Thermal management multilayer sheet, including a first heat-spreading layer, a first side of a first integrity layer disposed on a side of the first heat spreading layer, a first side of a first adhesive layer disposed on an opposite second side of the first integrity layer, a second integrity layer, and a second heat-spreading layer, wherein a first side of the second integrity layer is disposed on an opposite second side of the adhesive layer, and the second heat-spreading layer is disposed on an opposite second side of the second integrity layer; or a first side of the second heat-spreading layer is disposed on an opposite second side of the first adhesive layer, a first side of the second integrity layer is disposed on an opposite second side of the second heat-spreading layer, and a second adhesive layer is disposed on an opposite second side of the second integrity layer.

Absstract of: WO2021184035A1

Described are substrates including a layer of an aluminum alloy with a conductive coating, also referred to as a protective overlayer. The conductive coating can prevent certain material from coming into contact with the aluminum alloy layer while allowing transmission of electrons to the aluminum alloy. The substrates may be used, for example, in electronics applications, such as current collectors or electrodes for batteries, electrochemical cells, capacitors, supercapacitors, or the like.

Absstract of: WO2021180923A1

The present invention relates to a method for monitoring the state of health of at least one contactor (1, 2) in a battery pack (3), wherein the battery pack (3) has at least one battery cell (4) for the electrochemical storage of electrical energy as well as a first interface line (5) and a second interface line (6) for providing the electrical energy at an interface (7), wherein at least one switchable first contactor (1) is arranged in the first interface line (5) between the interface (7) and the at least one battery cell (4) and at least one switchable second contactor (2) is arranged in the second interface line (6) between the interface (7) and the at least one battery cell (4), having the steps of measuring a first differential voltage (Udif, 1) across the open first contactor (1) and/or measuring a second differential voltage (Udif, 2) across the open second contactor (2) and monitoring the state of health of the first contactor (1) on the basis of the measured first differential voltage (Udif, 1) and/or determining the state of health of the second contactor (2) on the basis of the measured second differential voltage (Udif, 2).

Absstract of: WO2021181251A1

An electric Vehicle (EV) comprises a frame extending rearwards from the front portion of the EV towards a rear portion of the EV. A floorboard structure is disposed below the frame and is supported by the frame. A battery is disposed in a cavity defined between the floorboard structure and the frame. A first heat-generating component is disposed in the rear portion of the EV. The EV further comprises a duct extending from the front portion to the first heat-generating component to conduct air from the front portion to the first heat-generating component.

Absstract of: WO2021180674A1

The invention concerns a method for calibrating a current sensor (103) arranged for measurement of current from or to a battery system (100) provided with one or more battery cells (101), the method comprising the steps of: providing information on a relationship between a voltage and a charge level of the battery system (100); charging or discharging the battery system (100) so as to change the charge level and thereby the voltage of the battery system (100); measuring during said charging or discharging at least a first voltage and, at a later point in time, a second voltage; obtaining, based on the relationship between the voltage and the charge level of the battery system (100), a total reference charge corresponding to the change of voltage from the first voltage to the second voltage; measuring the current, using the current sensor (103), during said charging or discharging; obtaining a total measured charge based on the current sensor (103) measurement; and calibrating the current sensor (103) based on a difference between the total reference charge and the total measured charge.

Absstract of: WO2021180629A1

The present invention relates to a solid electrolyte comprising a polymer and a salt selected from the group consisting of a lithium salt, a sodium salt and mixtures thereof, wherein the polymer comprises at least 50 mol% of recurring units of formula (I), to a method for the preparation of said electrolyte, its uses and energy storage devices comprising said electrolyte.

Absstract of: WO2021180589A1

Process for making a partially coated electrode active material wherein said process comprises the following steps: (a) Providing an electrode active material according to general formula Li1+xTM1-xO2, wherein TM is Ni and, optionally, at least one of Co and Mn, and, optionally, at least one element selected from Al, Mg, and Ba, transition metals other than Ni, Co, and Mn, and x is in the range of from zero to 0.2, wherein at least 50 mole-% of the transition metal of TM is Ni, (b) treating said electrode active material with an aqueous medium, (c) partially removing water by solid-liquid separation method, (d) treating the solid residue with an aqueous formulation of at least one heteropolyacid or its respective ammonium or lithium salt, (e) treating the residue thermally.

Absstract of: WO2021180469A1

The invention relates to a bodyshell structure for an electrically powered car, comprising at least one ventilation channel formed by a plurality of structural components (22, 26) which are connected to one another and delimit respective hollow chambers, which ventilation channel has at least one inlet opening (40) for the inflow of venting gas exiting from a drive battery (10) of the car in the case of a thermal event, and at least one outlet (46) via which the venting gas can be released into the surroundings of the car, at least one venting gas treatment device (70) being arranged inside the ventilation channel (26) for targeted treatment of the venting gas and/or of the particles carried along by it.