Abstract: A semi-solid state battery includes a cell and a gel electrolyte. The cell includes a cathode plate and an anode plate, in which a three-dimensional network structure coating is set on the cathode plate and/or the anode plate. Raw materials for preparing the three-dimensional network structure coating include a fiber material and an initiator. The gel electrolyte is condensed by a reaction of electrolyte precursor solution and the initiator. The electrolyte precursor solution includes a monomer and a cross-linking agent. A semi-solid state battery of this type has low resistance, high specific capacity, and good electrical performance and safety performance.

Abstract: An an energy storage apparatus is provided. the energy storage apparatus includes: a plurality of single batteries and a bipolar plate, each of the plurality of single batteries including a battery cell, the battery cell including a first electrode and a second electrode with opposite polarities and being insulated from each other; the bipolar plate is arranged between two adjacent single batteries, the first electrode or the second electrode of one of the adjacent single batteries forms an electrical connection with the bipolar plate through contacting, and the second electrode or the first electrode of the other of the adjacent single batteries forms an electrical connection with the bipolar plate through contacting.

Abstract: An olefin conversion catalyst and its preparation method and application are disclosed. The catalyst comprises the following components, in parts by mass: a) 50-90 parts of a molecular sieve with a structure of twelve-membered ring and above; b) calculated as oxide, 0.1-10 parts of an added component selected from Group IA metal elements, Group IIA metal elements, or a combination thereof; c) calculated as oxide, 0.1-10 parts of a modifying component selected from silicon, germanium, bismuth, tin, boron, gallium or a combination thereof; and d) 10-49 parts of a support component. When the catalyst is used to convert a small amount of olefins in an aromatic distillate oil, it has the characteristics of high activity and stability, long life and effective utilization of olefins.

Abstract: The present disclosure provides a management method and a management system of a secondary battery, the secondary battery comprises N battery cells connected in series, N being a positive integer greater than or equal to 2. The management method comprises: acquiring a voltage and a battery capacity parameter of both ends of the secondary battery in real time during at least one process of a charging process and a discharging process; determining a characteristic point of the voltage during its changing process, comprising: calculating a ratio of a change of the voltage relative to a change of the battery capacity parameter in real time when the voltage reaches a preset range, and determining that one characteristic point occurs during the changing process of the voltage when the ratio is greater than a characteristic threshold; and determining a uniformity of the secondary battery based on a number of the characteristic points.

Abstract: A power supply circuit is adapted to an electronic device. The power supply circuit includes a drive circuit, a feedback resistor circuit, a battery module and a controller. The drive circuit receives a charger boost indication signal and generates a drive signal accordingly. The feedback resistor circuit has a feedback resistance value changing in response to the drive signal and receives a DC power supply to supply power to a system component. The battery module provides a battery power supply to the system component. The controller controls the battery power supply provided by the battery module according to the feedback resistance value. When the system component is operating in a heavy load state, the controller transmits the corresponding charger boost indication signal to the drive circuit, so as to reduce the feedback resistance value through the drive signal.

Abstract: A control circuit for controlling a power module is provided. The power module drives a processing circuit. The control circuit includes a first resistor, a second resistor, a trigger circuit, and a switch circuit. The first resistor is coupled between a first reference voltage and a setting input terminal. The second resistor is coupled between a second reference voltage and the setting input terminal. The trigger circuit provides a switching signal in response to an operating signal. The switch circuit transmits a control signal to the setting input terminal in response to a first voltage level, and stops transmitting the control signal in response to a second voltage level. The power module executes one of a first power supply mode and a second power supply mode in response to a voltage value. When the control signal is not received, the power module executes a third power supply mode.

Abstract: A method for preparing an in-situ polymerized semi-solid state battery, comprising the following steps: assembling: assembling a cathode plate, a separator and an anode plate into a case to form a dummy cell; first injection: injecting a lithium battery liquid electrolyte; aging and formation; second injection: injecting a mixture of polymer monomers, a plasticizer and an initiator, wherein the polymer monomers are a combination of vinylene carbonate and tripropargyl phosphate; aging, and in-situ polymerization at 58-65° C. to form gel, thus obtaining a low impedance semi-solid state battery. The formulation of the second injection comprises a tridimensional monomer, and the liquid electrolyte can be locked in the three-dimensional structure after crosslinking.

Abstract: A battery cell, a battery, and an electric device relating to the field of battery.

Abstract: The present disclosure discloses a high-safety ternary positive electrode material and a method for preparing the same; wherein the ternary positive electrode material has a chemical composition of Lia(NixCoyMn1-x-y)1-bMbO2-cAc, wherein 0.75?a?1.2, 0.75?x<1, 0<y?0.15, 1?x?y>0, 0?b?0.01, 0?c?0.2, M is one or more selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg, and A is one or more selected from the group consisting of S, F and N; and CMn?(1?x?y)?0.07; CCo?y?0.05; 0?[CMn?(1?x?y)]/(CCo?y)?2.0. The ternary positive electrode material of the present disclosure is a high-nickel single crystal material with gradient concentration; it has the advantages of high capacity and high thermal stability, and the preparation method is simple, and is suitable for large-scale production.

Abstract: A load switch circuit is provided. The load switch circuit includes a control chip and a current limit protection circuit. The control chip is operated at a power supply voltage, configured to receive an input voltage, and controlled by an enable signal to provide an output voltage and an output current to a load. The current limit protection circuit is configured to provide a current limit control voltage to a current limit and low power pin of the control chip, so that the control chip may adjust a current limit of the output current.

Abstract: A secondary battery comprises a secondary battery assembly, the secondary battery assembly comprises an electric cell assembly, a transfer conductor and an insulation plate, wherein the electric cell assembly comprises at least two electric cells arranged side by side, and each electric cell has a tab extending from the top surface of the electric cell. The transfer conductor is provided with a transfer conductor tab assembly part. The insulation plate is located between the electric cell assembly and the transfer conductor, and the insulation plate is provided with a plate tab matching part, wherein, the folded tab passes through the plate tab matching part of the base plate and the transfer conductor tab assembly part in turn, and then is welded with the transfer conductor. The secondary battery of the application features short tabs, good battery performance, high safety, high assembly efficiency and low cost.

Abstract: The top cover structure for a secondary battery includes: an insulating plate, provided with a lower through hole penetrating up and down; a top cover plate located on the top of the insulating plate, provided with an upper through hole interconnected with the lower through hole and penetrating up and down; a conductor, passing through the upper through hole and the lower through hole and fixedly connecting with the top cover plate and the insulating plate, and the conductor is provided with an intersecting hole penetrating through the conductor. An intersecting hole penetrating through the conductor is provided on the conductor, so that the conductor can not only connect and conduct the secondary battery from the outside to the inside of the secondary battery, but also can conveniently inject or replenish liquid into the secondary battery through the intersecting hole, thereby improving the production efficiency of the secondary battery.

Abstract: The present application relates to the technical field of battery equipment and electric vehicles, disclosing a battery pack liquid-cooled plate and a battery pack. A battery pack liquid-cooled plate comprises: a liquid-cooled bottom plate for bottom cooling of a battery, wherein a first cooling channel is provided in the liquid-cooled bottom plate; multiple liquid-cooled side plates used for side cooling of the battery, wherein a second cooling channel is provided in each liquid-cooled side plate, each liquid-cooled side plate and the liquid-cooled bottom plate are arranged perpendicular to each other, and a flow channel of each liquid-cooled side plate interconnects with each other through a multi-pass device to form a flow-channel structure.

Abstract: A current collector has a pore-forming functional coating layer, an electrode sheet and a battery. The current collector having a pore-forming functional coating layer comprises an electrically conductive substrate layer and a functional coating layer applied on at least one surface of the substrate layer, wherein the functional coating layer comprises a gas-generating compound which has a decomposition temperature of 250° C. or less and is capable of producing gas. A compound capable of generating gas by decomposition is applied in the functional layer of the current collector. Hence, through holes extending through the coating layer can be produced by decomposing the pore-forming compound at the bottom of the active coating layer to generate gas with no need to change the existing coating process, thereby improving the kinetic performance of battery products. The method is simple, practicable, cost efficient, suitable for popularization, and has high application value.

Abstract: A ternary positive electrode material, a method for preparing the same, a positive electrode sheet and a lithium ion battery in which the ternary positive electrode material has a chemical composition of Lia(NixCoyM1-x-y)1-bM?bO2-cAc, wherein 0.75?a?1.2, 0.5?x<1, 0<y?0.1, 0?b?0.01, 0?c?0.2; M is at least one selected from the group consisting of Mn and Al; M? is at least one selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg; A is at least one selected from the group consisting of S, F and N; and 2%?CCol?CCo, 5%?CAl?CAll. The lithium ion battery shows better short-term kinetic performances and long-term kinetic performances, and it also exhibits excellent stability in long-term cycles.

Abstract: The present disclosure proposes a secondary battery and welding method thereof.

Abstract: A safe lithium-ion battery and a manufacturing method therefor in which a positive or negative plate contain a redox shuttle agent. A battery positive electrode material is lithium iron phosphate, or a mixture of lithium iron phosphate and one or more of lithium nickel cobalt manganese oxide, lithium manganate, and lithium cobalt oxide, or a mixture of lithium iron phosphate and one or two of lithium manganese iron phosphate and lithium-rich lithium iron oxide. The lithium iron phosphate accounts for more than 60% (mass ratio). In the manufacturing process of an electrode plate (a positive plate or a negative plate), a redox shuttle agent is added as an additive. The additive can start a redox shuttle reaction at a specific voltage to convert redundant electrical energy into thermal energy; continuous charging can be tolerated under a voltage of 3.8-3.95V, thereby improving safety performance of the battery.

Abstract: Preparation of a silicon composite material, and a negative electrode plate containing same, relating to the field of silicon-based composite materials. The silicon composite material comprises silicon nanoparticles, carbon nanotubes, silicon oxide, lithium oxide, and lithium metasilicate. The carbon nanotubes and the silicon nanoparticles are dispersed and cross-linked to form a three-dimensional network structure. Silicon oxide, lithium oxide, and lithium metasilicate cover the three-dimensional network structure to form secondary particles. The secondary particles and graphite are homogenized and coated according to a specific particle size ratio to prepare the negative electrode plate containing the silicon composite material and having high-capacity development, good conductivity, high coulombic efficiency, small volume expansion, and high cycling stability.

Abstract: A battery module comprises a fixing component including a plurality of insertion posts, the insertion posts being sandwiched between a plurality of the cells. Further, the cell is provided with a fillet structure on the edges and the insertion post is connected to the fillet structure. According to the battery module, a plurality of removable reinforcement points are provided by a plurality of insertion posts, which do not affect the stacking density of the cells in the battery pack, and increasing the mechanical connection strength of the battery module. The removable design of the battery module and insertion posts solves the maintenance problem of the integrated battery pack and improves the safety of the battery module, featuring high structural strength, integrity and stability. A battery pack can include the battery module and an electric vehicle can include the battery pack.

Abstract: A top cover for a power battery including a top cover plate, a first post, a first fastener, a second post, a first sealing member, and an insulation plate.