Abstract: A method of recovering metal from battery waste is provided. The method includes providing a battery waste leachate comprising metal ions and sulphate ions in an acidic medium, contacting the battery waste leachate with a reagent comprising ammonium ions to precipitate the metal ions as a double sulphate salt having formula (NH4)2M(SO4)2·6H2O, wherein M is one or more of Ni, Mn and Co, heating the precipitate at a temperature of 400° C. or more to form an anhydrous precipitate, dissolving the anhydrous precipitate in a solution comprising sulphate ions and crystallizing MSO4·6H2O from the resultant solution.

Abstract: A resonant converter, a control method of a resonant converter, and a related device. The resonant converter includes a control circuit, a drive circuit, and a switch circuit. The control circuit is configured to generate, based on a target output electrical parameter of the resonant converter, a first pulse signal and a second pulse signal that have different frequencies. The control circuit is further configured to: obtain a first drive signal based on the first pulse signal and the second pulse signal and send the first drive signal to the drive circuit. The drive circuit is configured to: convert the first drive signal into one or more second drive signals and send the one or more second drive signals to the switch circuit, to turn on or off a switch component in the switch circuit.

Abstract: A valve assembly configured to maintain fluid flow therethrough at a constant flow rate. The valve assembly including a flexible flow control member defining an inner fluid chamber within the flexible flow control member and an inlet opening to the inner fluid chamber. An outer fluid chamber is defined between the flexible flow control member and an inner surface of a valve housing. The flexible flow control member is configured to flex inward and shrink the inner fluid chamber in response to a pressure decrease in the inner fluid chamber relative to the outer fluid chamber resulting from an increase in an inlet flow rate to maintain an outlet flow rate from the valve assembly at the constant flow rate.

Abstract: A display panel and a method for manufacturing the same, and a tiled screen device. The display panel includes an array substrate, comprising a first surface, a second surface, and a first side surface connecting the first surface and the second surface, the first surface and the second surface being opposite to each other; a first pad, located on the first surface; a second pad, located on the second surface; a connecting trace, connecting the first pad and the second pad, the connecting trace is at least partially located on the first side surface; and a side boundary definition layer, located on an edge of the array substrate and located on a side of the connecting trace away from the array substrate. The display panel, the method for manufacturing the same, and the tiled screen device facilitate achieving narrow bezel.

Abstract: A valve assembly (10) configured to maintain fluid flow therethrough at a constant flow rate. The valve assembly (10) including a flexible flow control member (50) defining an inner fluid chamber (90) within the flexible flow control member (50) and an inlet opening (56) to the inner fluid chamber (90). An outer fluid chamber (92) is defined between the flexible flow control member (50) and an inner surface (74) of a valve housing (20). The flexible flow control member (50) is configured to flex inward and shrink the inner fluid chamber (90) in response to a pressure decrease in the inner fluid chamber (90) relative to the outer fluid chamber (92) resulting from an increase in an inlet flow rate to maintain an outlet flow rate from the valve assembly (10) at the constant flow rate.

Abstract: There is provided an aqueous electrolyte for a battery, including a water-based solvent having dissolved therein a mixture of a sodium-based salt and a trifluoromethanesulfonate-based salt, and a battery including an anode and a cathode, and the aqueous electrolyte ionically coupling the anode and the cathode.

Abstract: The embodiments provide a backplane and a power conversion method and apparatus. The power conversion apparatus includes a first power module, a second power module, and a controller. Each power module includes a signal processor and a corresponding power converter. The signal processor in the first power module sends a generated first carrier signal to the signal processor in the second power module. The signal processor in the second power module determines a second carrier signal by using a period of the first carrier signal, to drive the power converter in the first power module by using the first carrier signal, and drive the power converter in the second power module by using the second carrier signal. This improves operating efficiency of a device in a power conversion process and reduces a power loss.

Abstract: An energy storage device may include a housing and an electrolyte-impermeable-barrier-member disposed within an internal space of the housing. The electrolyte-impermeable-barrier-member may partition the internal space of the housing into a receptacle space and an intervening space. The energy storage device may further include a first electrode disposed in the intervening space and a second electrode disposed in the receptacle space. The electrolyte-impermeable-barrier-member may define at least one through-hole serving as a channel connecting the receptacle space and the intervening space.

Abstract: A battery management system includes a sampling control unit, a DC/DC conversion unit, and an energy storage unit. When the battery pack needs to be heated, based on battery parameters of the battery pack and a voltage and a current limit value of the DC/DC conversion unit, the sampling control unit may control, in each of at least one consecutive first cycle, the battery pack to discharge to the energy storage unit by using the DC/DC conversion unit; control, in each of at least one consecutive second cycle, the energy storage unit to charge the battery pack by using the DC/DC conversion unit; and control, in the at least one consecutive first cycle and the at least one consecutive second cycle, an average charge/discharge current value of the battery pack to be less than or equal to a charge/discharge current limit value.

Abstract: A power conversion device includes a power conversion device includes an auxiliary power supply, a first load, a power conversion circuit, and a controller. When an output voltage of the auxiliary power supply in operation is greater than or equal to a first voltage threshold, the controller controls the first load to be connected to the power conversion device, so that the output voltage of the auxiliary power supply decreases. When the output voltage of the auxiliary power supply is greater than or equal to a second voltage threshold after the first load is connected to the power conversion device, the controller controls the first load to be disconnected from the power conversion device, and controls the output voltage of the auxiliary power supply to be a first target output voltage. The first voltage threshold is less than the second voltage threshold.

Abstract: A resonant converter, a control method of a resonant converter, and a related device. The resonant converter includes a control circuit, a drive circuit, and a switch circuit. The control circuit is configured to generate, based on a target output electrical parameter of the resonant converter, a first pulse signal and a second pulse signal that have different frequencies. The control circuit is further configured to: obtain a first drive signal based on the first pulse signal and the second pulse signal and send the first drive signal to the drive circuit. The drive circuit is configured to: convert the first drive signal into one or more second drive signals and send the one or more second drive signals to the switch circuit, to turn on or off a switch component in the switch circuit.

Abstract: A resonant converter, a control method of a resonant converter, and a related device. The resonant converter includes a control circuit, a drive circuit, and a switch circuit. The control circuit is configured to generate, based on a target output electrical parameter of the resonant converter, a first pulse signal and a second pulse signal that have different frequencies. The control circuit is further configured to: obtain a first drive signal based on the first pulse signal and the second pulse signal and send the first drive signal to the drive circuit. The drive circuit is configured to: convert the first drive signal into one or more second drive signals and send the one or more second drive signals to the switch circuit, to turn on or off a switch component in the switch circuit.

Abstract: Provided herein are desodiated, pre-aged sodium nickelates, which have been desodiated via acid leaching, and pre-aged using a hydroxide solution. The desodiated, pre-aged sodium nickelates exhibit improved stability. Mixtures of such nickelates with EMD, and methods of making such sodium nickelates, along with alkaline electrochemical cells comprising such are also provided herein.

Abstract: A valve assembly (10) configured to maintain fluid flow therethrough at a constant flow rate. The valve assembly (10) including a flexible flow control member (50) defining an inner fluid chamber (90) within the flexible flow control member (50) and an inlet opening (56) to the inner fluid chamber (90). An outer fluid chamber (92) is defined between the flexible flow control member (50) and an inner surface (74) of a valve housing (20). The flexible flow control member (50) is configured to flex inward and shrink the inner fluid chamber (90) in response to a pressure decrease in the inner fluid chamber (90) relative to the outer fluid chamber (92) resulting from an increase in an inlet flow rate to maintain an outlet flow rate from the valve assembly (10) at the constant flow rate.

Abstract: A system and method for battery charge/discharge equalization, the method including performing, for each battery module of M battery modules of a battery component, determining, by a control unit of the respective battery module, a reference value of a power parameter, wherein M is a positive integer greater than 1, where each battery module of the M battery modules includes the control unit, a direct current-direct current (DCDC) converter, and an energy storage unit, wherein the control unit is electrically connected to the DCDC converter, and the DCDC converter of each battery module is electrically connected to a load or a power supply, and where the reference value is associated with equalizing charging/discharging of the M battery modules, and controlling, by the control unit of the battery module using the DCDC converter, an value of the power parameter to be equal to the reference value.

Abstract: A malto-dextrin composition with low DE value and low viscosity and the method for making the same is provided. The malto-dextrin comprises a blue value in the range of 0.02 to 0.28; a dextrose equivalent (DE) in the range of 3 to 10; and a viscosity lower than 26.3185*DE{circumflex over (?)}(?0.7593). The method for preparing the malto-dextrin composition comprises: dispersing raw starch in water to obtain a starch-water slurry; preheating the starch-water slurry with a jet-cooker for a first duration at a first temperature above 100° C. having a temperature variation no more than 0.8° C.; hydrolyzing the slurry by treating the slurry with ?-amylases for a second duration at a second temperature; and filtering the hydrolyzed slurry to remove insoluble residual proteins and fibers and obtain an un-fractionated malto-dextrin composition.

Abstract: A fusion protein, an amino acid sequence thereof, a coding nucleotide sequence thereof, a preparation method thereof and a use thereof are in the technical field of agricultural biotechnology. The fusion protein contains or consists of at least three, four, five, six, seven, or eight same and/or different PAMP (Pathogen-Associated Molecular Pattern) polypeptides. Optionally, there is at least one linker or no linker between two adjacent PAMP polypeptides. A plurality of PAMP polypeptides are assembled into the fusion protein having multiple immune epitopes. The fusion protein may induce defense immune responses of plants, weaken infestation ability of pathogenic microorganisms and substantially improve the disease resistance of plants. The method for preparing the fusion protein combines technologies of PTI (PAMP-Triggered Immunity) mechanism and gene engineering to obtain the fusion protein having multiple immune epitopes can be used in preparation of plant immune PAMP polypeptides.

Abstract: A malto-dextrin composition with low DE value and low viscosity and the method for making the same is provided. The malto-dextrin comprises a blue value in the range of 0.02 to 0.28; a dextrose equivalent (DE) in the range of 3 to 10; and a viscosity lower than 26.3185*DE{circumflex over (?)}(?0.7593). The method for preparing the malto-dextrin composition comprises: dispersing raw starch in water to obtain a starch-water slurry; preheating the starch-water slurry with a jet-cooker for a first duration at a first temperature above 100° C. having a temperature variation no more than 0.8° C.; hydrolyzing the slurry by treating the slurry with ?-amylases for a second duration at a second temperature; and filtering the hydrolyzed slurry to remove insoluble residual proteins and fibers and obtain an un-fractionated malto-dextrin composition.

Abstract: Provided are a staircase code decoding method and a staircase code decoding apparatus. The method includes: step 1, obtaining the length L of a sliding window, and continuously obtaining, starting from a P-th subcode block, L subcode blocks as first to-be-decoded subcode blocks in the sliding window; step 2, dividing the first to-be-decoded subcode blocks into a plurality of first to-be-decoded groups, respectively decoding the plurality of to-be-decoded groups to be decoded, and updating the plurality of first to-be-decoded groups according to a decoding result to obtain first updated subcode blocks; step 3, sliding the sliding window forwards by a length of N subcode blocks; step 4, dividing second to-be-decoded subcode blocks into a plurality of second to-be-decoded groups, decoding the plurality of second to-be-decoded groups, obtaining second updated subcode blocks, and outputting first M subcode blocks among the second updated subcode blocks; and step 5, sliding the sliding window backwards by S.