Absstract of: US20260081279A1
A battery pack includes: a first battery module and a second battery module that are stacked together; and a cooling plate disposed between the first battery module and the second battery module. Each of the first battery module and the second battery module includes a cell stack that is a plurality of battery cells stacked together, and a frame having a frame shape and surrounding the periphery of the cell stack. The frame of the first battery module has a protrusion protruding toward the second battery module. The frame of the second battery module has a recess that receives the protrusion of the first battery module. The cooling plate has a hole or a notch through which the protrusion passes.
Absstract of: US20260081319A1
A battery system includes a plurality of battery packs and a battery management system (BMS). The BMS is operably coupled to the plurality of battery packs. The plurality of battery packs includes a first battery pack and a second battery pack. The first battery pack includes a first plurality of battery cells, a first fuse, and first terminals. The second battery pack includes a second plurality of battery cells, a second fuse, second terminals, and a supplementary fuse. The second terminals are electrically connected in parallel with the first terminals. The BMS is configured to monitor operational parameters of the plurality of battery packs; detect a fault condition in at least one of the plurality of battery packs; and initiate actuation of the supplementary fuse in response to the detected fault condition. The supplementary fuse is configured to blow to isolate the second battery pack from the first battery pack.
Absstract of: US20260081330A1
A battery shell, a battery cell and a large-capacity battery, which mainly solve the problem of poor performance of existing large-capacity batteries. The battery shell is provided with a first through hole and is also provided with a pipeline covering the first through hole and extending along a thickness direction of the battery shell, the pipeline is provided with a second through hole on a pipe body, and the first through hole communicates with the second through hole. An electrolyte sharing channel of a large-capacity battery is formed through the pipeline, and battery cells in the large-capacity battery may be in a unified electrolyte environment, thereby improving the performance of the large-capacity battery.
Absstract of: US20260081276A1
An in-vehicle battery installation structure includes: a battery stack configured with multiple rectangular batteries stacked in a thickness direction of the rectangular batteries; a lower case that has an opening in an upper face; an upper case which is mounted on an upper part of the lower case so as to close the opening and of which a lower face is open; fastening members that fasten the lower case and the upper case together such that a force in the thickness direction is exerted from the lower case and the upper case onto the battery stack; and a cross-member which is a part of a vehicle body framework member supporting the lower case and the upper case and extends in a vehicle-width direction, and of which a lower face exerts a force in the thickness direction onto an upper face of the upper case.
Absstract of: US20260081239A1
A battery system includes a plurality of battery packs and a battery management system (BMS). The battery packs include a first battery pack and a second battery pack. The first battery pack includes a first plurality of battery cells, a first fuse, and first terminals. The second battery pack includes a second plurality of battery cells, a second fuse, second terminals, and a short circuit path extending between the second terminals. The second terminals are electrically connected in parallel with the first terminals. The BMS is configured to monitor operational parameters of the battery packs, detect a fault condition in at least one of the battery packs; and initiate a short circuit across the second terminals of the second battery pack via the short circuit path. The short circuit results in a current that causes the first fuse or second fuse to blow to electrically isolate the battery packs.
Absstract of: US20260081240A1
The present disclosure relates to a battery management method, a battery management apparatus, and an electronic device. The battery management method includes: acquiring a current power level of a battery for the electronic device when the electronic device receives a wake-up signal; determining an operation mode of the electronic device according to the current power level of the battery, wherein a maximum power in the determined operation mode is supportable by the current power level of the battery; and controlling the electronic device to operate in the determined operation mode.
Absstract of: US20260081238A1
Embodiments of the present application provide a separator, a preparation method thereof, a secondary battery, and an electric apparatus. The separator includes a first base film, a coating, and a second base film, where the coating is disposed between the first base film and the second base film, the coating includes an ion-trapping agent, and a reduction potential of the ion-trapping agent relative to lithium metal is 0 V to 2 V. A secondary battery containing the separator exhibits improved cycling performance.
Absstract of: US20260081235A1
A secondary battery comprises: an electrode body obtained by winding a negative electrode in which a negative electrode mixture layer is formed on a negative electrode core body and a positive electrode. The secondary battery is characterized in that: the negative electrode has, at the winding direction inner-end side of the electrode body, a non-facing part which does not face the positive electrode with the separator therebetween; the non-facing part has a mixture non-facing part in which the negative electrode mixture layer is formed on at least one surface of the negative electrode core body, from the winding direction outer end of the non-facing part and toward the winding direction inner side; and the average value of a mixture surface distance which is between the mixture non-facing part and the negative electrode positioned one turn outward of the mixture non-facing part is not less than 90 μm.
Absstract of: US20260081138A1
Disclosed is a lithium ion battery. The lithium ion battery includes a positive electrode plate, a negative electrode plate and a separator. The positive electrode plate, the separator and the negative electrode plate are stacked successively and then wound from inside to outside. The positive electrode plate includes a positive electrode current collector. At least one functional surface of the positive electrode current collector is provided with a protective layer. A surface of the protective layer away from the positive electrode current collector is provided with a positive electrode active layer. A length of the protective layer is greater than a length of the positive electrode active layer in a winding direction of the positive electrode current collector. According to the present application, by increasing a protection area of the protective layer for a positive electrode current collector, safety performance of the lithium ion battery is improved.
Absstract of: US20260081143A1
A metalized separator includes: a separator substrate having a first surface; and a layer of metallic active anode material deposited on the first surface. The layer of metallic active anode material may be deposited by physical vapour deposition (PVD). A separator assembly including the metalized separator, a battery cell containing one or more of the metalized separators, and a process of producing the metalized separator, are also disclosed.
Absstract of: US20260081166A1
A cured product for lithium ion secondary batteries includes water-soluble polymers, a crosslinking agent and cellulose nanofibers. The crosslinking agent crosslinks different water-soluble polymers or the water-soluble polymer and the cellulose nanofibers. When wide-angle X-ray scattering (WAXS) measurement is performed using CuKα rays, the diffraction angle 2θ has a peak in a range of 16° or more and 21° or less. The half-value width of the peak is 5.5° or less.
Absstract of: US20260081164A1
A binder composition for a non-aqueous secondary battery electrode contains a polymer X that includes an acidic group-containing monomer unit in a proportion of not less than 3 mass % and not more than 20 mass % and a repeating unit derived from an unsaturated monomer A in a proportion of not less than 5 mass % and less than 50 mass %. The unsaturated monomer A has a solubility in water of not less than 1 g/100 mL and not more than 15 g/100 mL and has a glass-transition temperature of 40° C. or lower.
Absstract of: US20260081140A1
Provided herein are methods of preparing electrodes. The method comprises: combining an electroactive material, an electron conductive material, an electrolyte, and a polymeric binder, to form an active mixture; and shaping the active mixture to form an electrode. In some embodiments, the electrolyte comprises a salt and a nonaqueous solvent of the salt. In some embodiments, the solvent of the salt does not dissolve the polymeric binder. In some embodiments, the method does not include a drying step to remove the solvent and the nonaqueous solvent remains in the active mixture and the electrode. In some embodiments, the electrode as prepared has an areal capacity of at least 2 mAh/cm2 and a thickness of at least 30 μm.
Absstract of: US20260081451A1
An energy management device that interworks with an electric power grid, a power generation device, an Energy Storage System (ESS), and a bidirectional Electric Vehicle (EV) charger includes: at least one processor; and a memory storing at least one instruction executed via the at least one processor. At least one instruction may include: an instruction for collecting basic information including information regarding a power generation state and a power consumption state, and grid electric power cost information; an instruction for establishing, by using the collected basic information, an ESS operation schedule for controlling charging and discharging operations of an ESS battery and an EV operation schedule for controlling charging and discharging operations of an EV battery; and an instruction for controlling the ESS battery and the EV battery to be charged/discharged in accordance with the ESS operation schedule and the EV operation schedule.
Absstract of: US20260081455A1
A computer device includes a non-transitory storage medium configured to store a plurality of processor executive commands and a processor configured to execute the plurality of processor executive commands. By executing the processor executive commands, the processor may be configured to estimate a state of charge (SOC) based on at least one of a measured voltage value, a measured current value, and a measured temperature value, correct the estimated SOC based on a polarization voltage of a secondary battery, determine a magnitude of a charging current based on the corrected SOC and the measured temperature value, and provide information on the determined magnitude of the charging current to a charging device.
Absstract of: US20260081456A1
A power charging device with a direct charging mode includes a power conversion module, having a primary-side circuit electrically connected to a primary side of a transformer and an output rectifier circuit electrically connected to a secondary side of the transformer, configured to convert an AC input voltage to a DC output voltage, and a power control module electrically connected to the power conversion module, configured to provide a direct charging mode or a regular USB type-C output power supply mode. The direct charging mode is activated to perform programmable charging when a direct charging agreement is confirmed between the AC to DC power charging device and battery pack, otherwise the regular USB type-C output power supply mode is activated.
Absstract of: US20260081454A1
A battery charging and discharging system includes bidirectional power supply and bypass module. Bidirectional power supply provides a charge current to charge a battery in a charge operation. Bypass module includes a first current path and a second current path that are coupled in parallel to each other. First current path includes a first resistor unit and battery coupled to first resistor unit. Second current path includes a second resistor unit. Charge current is a sum of a first charge current flowing through first current path and a second charge current flowing through second current path. Impedances of first resistor unit and second resistor unit are adjusted to gradually increase and to decrease respectively, so that a current value of first charge current gradually changes from a first current value to zero and a current value of second charge current gradually changes from zero to a second current value.
Absstract of: US20260081252A1
This application discloses a packaging bag, a secondary battery, and an electronic device, where the packaging bag includes an encapsulation layer, a metal layer, an adhesive layer, and a packaging layer arranged in a stacked manner. The adhesive layer includes a first thermally conductive material, where a mass percentage of the first thermally conductive material in the adhesive layer is denoted as G1, and 1%≤G1≤30%. By incorporating the first thermally conductive material into the adhesive layer, heat generated during operation of the secondary battery can be more effectively conducted away, mitigating temperature rise inside the secondary battery, thereby improving the performance and safety of the secondary battery. Additionally, this enables more uniform heat distribution between the interior of the secondary battery and the packaging bag, reducing localized overheating and extending the service life of the secondary battery.
Absstract of: US20260081241A1
A battery assembly includes a battery cell that accommodates an electrode assembly and includes a first electrode terminal on a first side surface of the battery cell and a second electrode terminal on a second side surface of the battery cell different from the first side surface, a protective circuit module on the first side surface of the battery cell, and a connection unit electrically connecting the first electrode terminal to the protective circuit module and the second electrode terminal to the protective circuit module.
Absstract of: US20260081236A1
A secondary battery, a pack, and an electronic apparatus are provided. The secondary battery includes an electrode assembly formed by sequentially stacking and winding a first electrode sheet, a first separator, a second electrode sheet, and a second separator and an insulating film configured to fix a tail end of the electrode assembly. A protruding end of a tail end of the first separator and a tail end of the second separator constitutes the tail end of the electrode assembly. A tail end of the second electrode sheet extends beyond a tail end of the first electrode sheet. The tail end of the electrode assembly extends beyond the tail end of the second electrode sheet. A starting end of the insulating film extends beyond the tail end of the electrode assembly.
Absstract of: US20260081254A1
Fluid-cooled electrochemical cell configurations and related articles, systems, and methods are generally described.
Absstract of: US20260081258A1
A battery enclosure system and method are disclosed. The battery enclosure system may include a housing configured to enclose battery cells. The housing may include one or more baffles extending along a first direction, each baffle including a first section disposed along the first direction and a second section angled from the first section by a baffle angle. The housing may also include one or more first fans coupled to a first side wall and one or more second fans coupled to a second side wall, which is at an opposing end of the housing relative to the first side wall along the first direction. Additionally, the housing may include a set of battery cells disposed along a floor of the housing and a controller with one or more processors configured to execute a set of program instructions stored in a memory.
Absstract of: US20260081234A1
A secondary battery, including an electrode assembly including a first electrode, a second electrode, and a separator therebetween, a case including a bottom portion, a side wall portion connected to the bottom portion, and an opening portion facing the bottom portion, the case accommodating the electrode assembly, and a cap assembly coupled to one end of the side wall portion of the case to seal the opening portion, wherein the case includes a groove region formed on an inner peripheral surface of the side wall portion.
Absstract of: US20260081158A1
An anode material having 0.8≤0.06×(Dv50)2−2.5×Dv50+Dv99≤12, where Dv50 represents a numerical value of a particle size measured at a cumulative volume of 50% in a volume-based particle size distribution of the anode material, and Dv99 represents a numerical value of a particle size measured at a cumulative volume of 99% in the volume-based particle size distribution of the anode material, wherein Dv50 and Dv99 are expressed in μm. The anode material is capable of significantly improving the rate performance of electrochemical devices.
Nº publicación: US20260081136A1 19/03/2026
Applicant:
GM GLOBAL TECH OPERATIONS LLC [US]
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Absstract of: US20260081136A1
Aspects of the disclosure include the electrochemical deposition of a metal oxide coating on cathode active materials and resulting battery cells. An exemplary vehicle includes an electric motor and a battery pack electrically coupled to the electric motor. The battery pack includes a battery cell that includes an anode current collector, an anode active material layer in direct contact with a surface of the anode current collector, a cathode current collector, a cathode active material layer in direct contact with a surface of the cathode current collector, and a separator positioned between the anode active material layer and the cathode active material layer. The cathode active material layer includes cathode active materials having a metal oxide coating. The metal oxide coating is electrochemically deposited onto the cathode active materials.