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1323
results.
Updated on
25/04/2025 [07:36:00]
Results 450 to 475 of 1323
Absstract of: WO2025077564A1
The present application relates to a flattening mechanism, comprising a support plate, and an adhesive pressing head and a hot pressing assembly which are mounted on the support plate. The adhesive pressing head comprises a hot pressing cavity, a feeding port, and a guide section by means of which the feeding port is in communication with the hot pressing cavity. A battery cell after completing the welding of a current collecting disk and the pasting of an adhesive tape can be fed into the hot pressing cavity from the feeding port, making the battery cell abut against the hot pressing head. An inner wall of the guide section is an inclined surface and then has a guiding effect, such that in a process of passing through the guide section, the adhesive tape on the current collecting disk can be bent under the action of the inner wall of the guide section, and is gradually collapsed towards the middle of the battery cell. Further, under the abutting action of the hot pressing head, the adhesive tape is flattened on the current collecting disk. In addition, the hot pressing head can also generate heat to heat the adhesive tape, such that the adhesive tape is hot-pressed and ironed. Thus, the flattening mechanism can enable an adhesive tape and a current collecting disk to be reliably attached and prevented from warping, such that the attaching effect of the adhesive tape can be effectively improved. In addition, further provided in the present application is a flattening device.
Absstract of: WO2025077513A1
A battery (100), comprising: a first battery cell module (1), which comprises a first electrode sheet assembly and a first separator (12), wherein the first electrode sheet assembly comprises a plurality of first electrode sheets (11), which are stacked in a Z direction and are arranged spaced apart from each other, two adjacent first electrode sheets (11) have opposite polarities, the first separator (12) comprises a plurality of first folding portions (121), which are sequentially connected end to end and are arranged in a stacked manner, and two adjacent first electrode sheets (11) are separated by a first folding portion (121); and a second battery cell module (2), which comprises a second electrode sheet assembly and a second separator (22), wherein the second electrode sheet assembly comprises a plurality of second electrode sheets (21), which are stacked in the Z direction and are arranged spaced apart from each other, two adjacent second electrode sheets (21) have opposite polarities, the second separator (22) comprises a plurality of second folding portions (221), which are sequentially connected end to end and are stacked, and two adjacent second electrode sheets (21) are separated by a second folding portion (221). The first battery cell module (1) and the second battery cell module (2) are arranged in a stacked manner, and the first separator (12) and the second separator (22) are integrally continuous. The battery can reduce production processes and increase the
Absstract of: WO2025077529A1
A battery thermal management method for an aircraft (800) and a thermal management system (100). A battery mounting chamber (110) is provided in the aircraft (800), and a battery (120) is at least partially mounted in the battery mounting chamber (110). The battery thermal management method comprises: in a ground heat exchange state, introducing a liquid heat exchange medium into a battery mounting chamber (110), and performing direct heat exchange between the liquid heat exchange medium and a battery (120); and in a flight preparation state, introducing a gaseous heat exchange medium into the battery mounting chamber (110), so that the liquid heat exchange medium is discharged out of an aircraft (800), and the gaseous heat exchange medium directly exchanges heat with the battery (120) in the flight state of the aircraft (800). The battery thermal management method can reduce the weight of the aircraft while satisfying the thermal management requirements of the battery (120), thereby satisfying the structural lightweight design requirements of the aircraft.
Absstract of: WO2025077277A1
Disclosed in the present invention is an energy storage system switching management method, comprising: determining a working state of each battery system on the basis of the current of each battery system, wherein the working state includes a static state, a charging state and a discharging state; for the battery systems in the static state, carrying out static open-circuit voltage calibration on the battery systems; for the battery systems in the charging state, carrying out switching management on the charging process of each battery system on the basis of the total battery voltage or the state of charge of each battery system; and for the battery systems in the discharging state, carrying out switching management on the discharging process of each battery system on the basis of the total battery voltage or the state of charge of each battery system. Therefore, according to the present invention, different working states can be accurately distinguished, and then corresponding switching management is carried out on the basis of different working conditions, so that the efficiency is relatively high, and the effect of switching management is good.
Absstract of: WO2025077298A1
The present application relates to the field of battery management systems of electric vehicles, and in particular to a battery level correction method for a battery management system, and a system. The method comprises: upon receiving a power-off signal, an MCU chip starts a built-in RTC to perform power-off timing, and the MCU chip enters a low-power-consumption mode to operate, wherein during a power-off timing process, the RTC determines whether the duration of the power-off timing is longer than or equal to a time threshold value; if the duration is longer than or equal to the time threshold value, the RTC wakes up the MCU chip to exit the low-power-consumption mode; after the MCU chip exits the low-power-consumption mode, the MCU chip stores a correction flag bit; after the MCU chip stores the correction flag bit, the MCU chip sends a first feedback signal to a power supply chip; when the power supply chip recovers power supply of the MCU chip and the MCU chip enters a working mode again, the MCU chip determines whether the correction flag bit has been stored; and if yes, the MCU chip performs battery level correction. The correction method for a battery management system and the system provided by the present application can realize static OCV correction at relatively low cost and power consumption.
Absstract of: WO2025077326A1
The present disclosure provides a low-conductivity compressed air foam, a preparation method therefor, and a use thereof. The method comprises first mixing high-purity water, a cosolvent, an antifreeze, and an emulsifier, adding a surfactant in the mixing and stirring process, mixing evenly to obtain a low-conductivity foam liquid, then mixing pressurized water and the low-conductivity foam liquid at a mixing ratio of 0.4-5% to form a mixed foam liquid, and then injecting a gas into the mixed foam liquid under positive pressure to yield the low-conductivity compressed air foam that is fine and uniform and has low conductivity and high stability. The conductivity of the low-conductivity compressed air foam prepared in the present disclosure is 0.0546-10 μS/cm, and the corresponding resistivity is 18.3-0.1 MΩ/cm. The low-conductivity compressed air foam prepared in the present disclosure is applied to electrical fire extinguishing and battery fire extinguishing, and is applicable to energy storage battery compartments, in-compartment battery packs, vehicle-mounted devices, ultra-high-voltage converter stations and the like, effectively preventing battery short circuit and electrical short circuit and the like, improving the safety and reliability of fire extinguishing, and reducing useless fire loss.
Absstract of: WO2025077342A1
A busbar assembly, comprising a plurality of battery connecting pieces (100), wherein each battery connecting piece (100) can enable battery cells (300) in adjacent rows to be connected in series, and the plurality of battery connecting pieces (100) can enable a plurality of battery cells (300) in the same row to be connected in parallel, thereby adapting to the connection requirements of various arrangement modes of the battery cells (300). The contour of a positive-electrode connecting area (110) is similar to that of a positive electrode post (310) of a battery cell (300), so that the connection is more stable and convenient; and a negative-electrode connecting area (120) has a width greater than that of the positive-electrode connecting area (110), and is used for connecting to a negative electrode (320) in the circumferential direction of the positive electrode post (310), and thus each battery connecting piece (100) has a high structural strength, can withstand relatively large tensile and compressive stress, and is not easily broken. In addition, a positioning hole (101) is further provided in the positive-electrode connecting area (110) of each battery connecting piece (100); by means of the positioning hole (101), the position of each battery connecting piece (100) can be determined, the positioning between each battery connecting piece (100) and battery cells (300) is accurate, and the battery connecting piece (100) is well connected to the battery cells (300).
Absstract of: WO2025077299A1
A negative electrode sheet, a secondary battery and an electrical device. The negative electrode sheet comprises a current collector and coatings provided on two sides of the current collector， each coating comprising a first active substance layer and a second active substance layer, and the first active material layer being located between the second active material layer and the negative electrode current collector; the surface density of the first active material layers is CW1, and a compaction density upper limit window is PD1; the surface density of the second active material layers is CW2, and a compaction density upper limit window is PD2; a compaction density upper limit window PD4 of the negative electrode sheet satisfies the following formula: PD4≤(CW1+CW2)/(CW1/PD1+CW2/PD2). The compaction density of the negative electrode sheet can be greatly improved while taking into account the charging capacity of the negative electrode sheet, thus giving full play to the energy density advantage of double-layer coating.
Absstract of: WO2025077340A1
The present application provides a thermal runaway early-warning method in a power battery system, an electronic device, and a storage medium. The power battery system comprises multiple battery cells and a pressure relief channel, and the pressure relief channel is used for pressure relief protection of the battery cells. The method comprises: acquiring the content of a target gas in the pressure relief channel; on the basis of the content of the target gas, determining whether a thermal runaway event occurs; and when it is determined that the thermal runaway event occurs, outputting a thermal runaway early-warning signal.
Absstract of: WO2025077183A1
Provided are a separator, and a preparation method therefor and the use thereof. The separator comprises a base film, wherein a positive electrode region and a negative electrode region are respectively located at two sides of the base film, the positive electrode region is used for being connected to a positive electrode sheet, and the negative electrode region is used for being connected to a negative electrode sheet; a fluoropolymer material layer is provided on a surface of the positive electrode region; and an Al-containing inorganic material layer is provided on a surface of the negative electrode region, the Al-containing inorganic material layer further comprises non-fluoropolymer particles, the non-fluoropolymer particles are arranged in the Al-containing inorganic material layer or partially embedded into the Al-containing inorganic material layer, and the height of the non-fluoropolymer particles embedded into the Al-containing inorganic material layer is 20-50% of the particle size of the non-fluoropolymer particles. A coating of the separator has strong adhesion to a negative electrode and can meet the requirements of high-speed lamination of a battery.
Absstract of: WO2025077178A1
Provided are a die cutting and slitting system, and a visual inspection method for die cutting and slitting. The die cutting and slitting system comprises: an inner electrode-sheet inspection mechanism (1004), an outer electrode-sheet inspection mechanism (1005), a conveying apparatus and an upper computer, wherein the inner electrode-sheet inspection mechanism (1004) acquires first image information, the outer electrode-sheet inspection mechanism (1005) acquires second image information, and the upper computer performs quality inspection on the basis of the first image information and the second image information,. Inspections are respectively performed on inner and outer electrode sheets on the basis of an inner inspection mechanism and an outer inspection mechanism, such that the product quality of electrode sheets is confirmed by means of two paths of electrode sheet images, thereby effectively increasing the yield of a die cutting stage in a cutting process, and effectively screening out electrode sheets with poor quality.
Absstract of: WO2025077152A1
A sodium ion battery positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) injecting a nickel-iron-manganese mixed salt solution, a complexing agent and a precipitant in parallel into a bottom liquid, carrying out a primary coprecipitation reaction, then injecting a copper-iron-manganese mixed salt solution, a complexing agent and a precipitant in parallel into the bottom liquid, and carrying out a secondary coprecipitation reaction to obtain a positive electrode precursor; (2) mixing the positive electrode precursor, a metal oxide and an organic solvent, stirring to obtain a coated precursor, and mixing and sintering the coated precursor and a sodium source to obtain a semi-finished positive electrode material; and (3) coating the semi-finished positive electrode material with a coating agent to obtain the sodium ion battery positive electrode material. The sodium ion battery positive electrode material has good structural stability, the capacity and rate performance of the material are improved while ensuring the cycle performance thereof, and dissolution of transition metal can be effectively prevented.
Absstract of: WO2025077181A1
A lithium battery, comprising: a battery stack with a noise source, a loudspeaker, a microphone and a processor, wherein the loudspeaker and the microphone are arranged in the battery stack; the microphone is connected to a signal input end of the processor, and is used for acquiring a main noise signal of the noise source and sending the main noise signal to the processor; the processor is used for generating a noise-reduction analog signal on the basis of the main noise signal; and the loudspeaker is connected to a signal output end of the processor, and is used for outputting the noise-reduction analog signal.
Absstract of: WO2025077096A1
Provided are a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electric device. The positive electrode active material comprises Na4-aAbFe3-cBd(PO4)2-eDf(P2O7), wherein A comprises at least one of Li and K, B comprises a metal element, D comprises at least one of a halogen anion, a silicate ion, a sulfate ion, or a borate ion, -0.12≤a≤0.12, b≥0, 0≤c≤0.3, d≥0, f>0, and 0
Absstract of: WO2025077149A1
The present application discloses a lithium-rich manganese-based precursor, and a preparation method therefor and a use thereof. The lithium-rich manganese-based precursor is an element-doped nickel-cobalt-manganese hydroxide, and doping elements in the lithium-rich manganese-based precursor include zirconium (Zr) and tungsten (W). In the present application, co-doping of the nickel-cobalt-manganese hydroxide with Zr and W helps to improve the electrochemical properties of a material, especially the cycle performance and the initial coulombic efficiency.
Absstract of: WO2025077163A1
An electrode assembly (20), a battery cell (100), a battery (200), and an electrical device (1000). The electrode assembly (20) comprises a first electrode sheet (21), a second electrode sheet (22), a first separator (23) and a second separator (24), the first separator (23), the first electrode sheet (21), the second separator (24) and the second electrode sheet (22) being stacked in sequence and wound, to form an integrated body, and the polarities of the second electrode sheet (22) and the first electrode sheet (21) being opposite. A length end of the first electrode sheet (21) is fixedly connected to at least one of the first separator (23) and the second separator (24), and length ends of both the first separator (23) and the second separator (24) extend past the length end of the first electrode sheet (21), and are fixedly connected to each other.
Absstract of: WO2025077041A1
The present disclosure relates to the technical field of battery production. Disclosed are a welding protection device, a welding system, a position adjusting method, and a welding method. A housing comprises a protection main body and protection covers, the protection main body and the protection covers define a protection cavity, and the protection covers can extend and retract. Multiple protection assemblies are arranged on the housing, each protection assembly is provided with a welding area communicated with the protection cavity, the welding area penetrates through the protection assembly, and the welding area is used for allowing a tip to pass through and perform welding. A driving assembly is arranged on the protection main body, the driving assembly is used for driving the protection assemblies and/or the protection main body to move so as to enable at least one protection assembly and a corresponding protection cover to move, and the direction of extension and retraction of each protection cover is arranged in the corresponding direction of movement of the protection assembly so as to limit a welding material from being separated from the protection cavity.
Absstract of: WO2025077083A1
Provided in the present application are a negative electrode sheet, a secondary battery and an electric device. The negative electrode sheet comprises a negative electrode current collector, a buffer layer and an active layer, wherein the buffer layer is located between the negative electrode current collector and the active layer; the buffer layer comprises a first binder; and an active material of the active layer comprises silicon-carbon composite particles, the silicon-carbon composite particles comprising a porous carbon material and a silicon material located in pores of the porous carbon material. By introducing the silicon-carbon composite particles into the active layer, a relatively good foundation can be provided for improving the energy density of a battery. In addition, by arranging the buffer layer, which comprises the first binder, between the negative electrode current collector and the active layer, the acting force of the silicon-carbon composite particles on the negative electrode current collector during a cold pressing process can be buffered, and the risk of damaging the negative electrode current collector by the silicon-carbon composite particles is reduced, such that good structural stability of the negative electrode current collector can be kept, thereby improving the cycling performance of the battery.
Absstract of: WO2025077151A1
A positive electrode precursor material, a preparation method therefor and a use thereof. The positive electrode precursor material sequentially comprises a core, an intermediate layer, and a shell from inside to outside; the core comprises a first hydroxide precursor material, the intermediate layer comprises a hydroxide material doped with an element, and the shell comprises a second hydroxide precursor material; the molar content of nickel in the second hydroxide precursor material is smaller than the molar content of nickel in the first hydroxide precursor material. The intermediate layer is added into the positive electrode precursor material to function as a transition between the core and the shell, so that the binding force between the core and the shell is enhanced, and the shell is effectively prevented from being separated, thereby improving the structural stability of the positive electrode precursor material, and a positive electrode material prepared by using the positive electrode precursor material as a raw material having excellent cycle performance and rate capability.
Absstract of: WO2025079745A1
The present invention provides a novel method for providing power to an insulin pump in order to facilitate the full return of a diabetic patient to normal daily life. The present invention includes: an insulin pump that is connected inside the body and administers insulin; and a portable battery pack that can provide power to the insulin pump by coming into contact with one side of the insulin pump. The insulin pump comprises: an injection unit for injecting insulin into the body: a first battery unit that stores power for operating the insulin pump and can be repeatedly charged and discharged; an operation unit, provided on a portion of one surface of the insulin pump, for operating the insulin pump; a first charging unit provided on a portion of the one surface of the insulin pump and connected to the first battery unit in contact with the portable battery pack in order to provide power; and a control unit for controlling the injection unit, the first battery unit, and the operation unit. The portable battery pack comprises: a second battery unit that can charge the first battery unit by using the stored power; and a second charging unit that comes into contact with the first charging unit in order to charge the first battery unit.
Absstract of: WO2025079549A1
Provided is a method for producing a regenerated positive electrode material precursor from a lithium-ion secondary cell that is an object to be processed, the method comprising performing a heat treatment step, a crushing step, a classification and sorting step, a magnetic separation step, an acid leaching step, an iron removal step, an ion exchange step, an alkali treatment step, and a washing step on the lithium-ion secondary cell that is the object to be processed.
Absstract of: WO2025079515A1
Provided are: a lithium-ion-selective permeable membrane containing an oxide solid electrolyte and a resin, the lithium-ion-selective permeable membrane including either a single film, in which a film having at least one of the below-mentioned properties (1) to (4) is provided independently, or a laminated film, in which a plurality of such films are provided; a lithium-ion recovery device comprising the lithium-ion-selective permeable membrane; and a sensor. (1) The volume-based particle size distribution of the oxide solid electrolyte has a peak within a particle diameter range of at least 0.1 μm or higher to less than 2 μm. (2) The oxide solid electrolyte has a bimodal or higher volume-based particle size distribution. (3) The oxide solid electrolyte has a bimodal volume-based particle size distribution, said distribution having one peak within a particle diameter range of 0.1 μm or higher to less than 2 μm and one peak within a particle diameter range of 10 μm or higher to less than 50 μm. (4) The oxide solid electrolyte has a trimodal volume-based particle size distribution, said distribution having one peak within a particle diameter range of 0.1 μm or higher to less than 2 μm, one peak within a particle diameter range of 2 μm or higher to less than 10 μm, and one peak within a particle diameter range of 10 μm or higher to less than 50 μm.
Absstract of: US2025125367A1
Provided is a secondary battery including: a positive electrode including a positive electrode current collector and a positive electrode active material layer located on the positive electrode current collector and including a positive electrode active material, a positive electrode conductive material and a positive electrode binder, wherein the positive electrode binder is fiberized and binds the positive electrode active material and the positive electrode conductive material; a negative electrode including a negative electrode current collector and a negative electrode active material layer located on the negative electrode current collector and including a plurality of granules including a negative electrode active material and a negative electrode binder, and formed as the negative electrode binder binds the negative electrode active material; and a separator disposed between the positive electrode and the negative electrode.
Absstract of: US2025125336A1
An electrode for a secondary battery and a method for manufacturing the same are disclosed, which reduces lithium side reactions, has a simple process, and can reduce cracks caused by external impact. The electrode material for a secondary battery according to an exemplary embodiment of the present invention comprises a base film with a plurality of through holes, a binder and a current collector. The binder includes active material particles dispersed therein and is fixed to the through holes. The current collector is attached to the base film.
Nº publicación: US2025125366A1 17/04/2025
Applicant:
KOREA KUMHO PETROCHEMICAL CO LTD [KR]
SAMSUNG SDI CO LTD [KR]
KOREA KUMHO PETROCHEMICAL CO., LTD,
SAMSUNG SDI CO., LTD
Absstract of: US2025125366A1
Disclosed are a binder for forming a solid electrolyte film, which includes a copolymer including structural units derived from a non-polar aromatic vinyl-based first monomer, an aliphatic conjugated diene-based second monomer, and a conjugated polyene-based third monomer, a film-type structure for a secondary battery including the same, and a secondary battery including the film-type structure.
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