Abstract: A battery module includes: a plurality of secondary battery cells, each including an electrode lead connected to an electrode assembly, a terrace portion forming a periphery of a cell body member in which the electrode assembly is accommodated, and a sealing portion formed to be connected to the terrace portion; a housing in which the plurality of secondary battery cells are accommodated; and a guard unit installed to face at least a portion of the terrace portion and at least a portion of the sealing portion to delay bursting of the sealing portion of at least one of the secondary battery cells. In the guard unit, a gap between internal surfaces facing the terrace portion is formed to be smaller than a thickness of the cell body member to limit expansion thickness of the terrace portion.

Abstract: The invention relates to nanostructured hybrid polymer composite membranes and methods for producing same. Specifically, the invention relates to nanofiber membranes produced through various methods, including electrospinning of at least one polymer into a non-woven nanofiber structure. The disclosed nanofiber membranes may also be compressed to further provide unique physical, chemical, and thermal properties that make such membranes suitable for a range of specific applications, including, but not limited to, use as nanostructured separators in lithium-ion batteries.

Abstract: A secondary battery includes a wound electrode body having a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are stacked on each other with the separator interposed therebetween and are wound about a winding axis. The wound electrode body has a section perpendicular to the winding axis. The section has an elongated shape that includes a flat part and a pair of curved parts. The curved parts oppose each other with the flat part interposed therebetween. The negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. A ratio of a second distance to a first distance is less than 1.

Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution that includes an alkoxy compound represented by CmX2m+1—O—(CX2)n—OH. Each X represents hydrogen (H) or a halogen, m is an integer of 1 or greater, n is an integer of 1 or greater, and (m+n) is 4 or greater.

Abstract: An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m2/g or more, preferably 20 m2/g or more, further, the crystallinity of the active material is increased by setting an XRD half width to greater than or equal to 0.12° and less than 0.17°, preferably greater than or equal to 0.13° and less than 0.16°.

Abstract: The present invention aims to provide an electrolyte composition from which an electrolyte film having a higher battery performance than typical electrolyte films is obtained. The present invention provides an electrolyte composition containing an alkali metal salt. The composition further contains a photocurable and/or thermosetting monomer; and a salt dissociating agent. A content ratio of the alkali metal salt is 50% by mass or more relative to 100% by mass of the total amount of the alkali metal salt, the photocurable and/or thermosetting monomer, and the salt dissociating agent.

Abstract: This application discloses a battery box, a battery pack, and a vehicle. The battery box includes: a lower box, including a bottom plate and a side plate connected to and disposed around the bottom plate; an upper box, connected to the side plate, where the upper box contains a cover plate disposed in opposition to the bottom plate, and the upper box and the lower box jointly close in to form an accommodation chamber; and a connector, disposed in the accommodation chamber and connected to the upper box and the lower box. The connector contains a guide channel, and the guide channel runs through the bottom plate and the cover plate along a first direction. The battery box, the battery pack, and the vehicle in this application satisfies requirements on strength of the battery box and connection strength between the battery pack and the vehicle.

Abstract: A main object is to provide a method of producing a cathode active material having a high average discharge potential, and a high degree of stability at high potential. A step of preparing a Na-doped precursor of making a transition metal oxide having a P2 structure belonging to a space group of P63/mmc; and an ion exchange step of substituting lithium for at least part of sodium contained in the transition metal oxide by an ion exchange method are included, wherein the transition metal oxide has the composition represented by NaaMnx?pNiy?qCoz?rM1p+q+rO2, where 0.5?a?1, x+y+z=1, 3?4x+2y+3z?3.5, and 0.05?p+q+r<0.25, M1 is Al or Mo, when M1 is Al, p is not equal to q, and any one of p and q is not 0.

Abstract: Embodiments of the present application provide a sleeve assembly, a cover plate assembly, a battery, and an electricity-consuming apparatus. The sleeve assembly is used for sealing a through hole. The sleeve assembly includes: a sleeve with an opening on at least one end; a nail body including a body portion. The size of the body portion is larger than the size of the barrel diameter of the sleeve. The body portion is configured to be inserted into the sleeve through the opening and press the inner wall of the sleeve after the sleeve is inserted into the through hole in the axial direction so as to form a protrusion for riveting the sleeve to the through hole on the outer wall of the sleeve.

Abstract: The present disclosure is directed to an electric power tool system with cordless power tools and removable, rechargeable battery packs that mate with the power tools to provide stored energy to the power tools. The battery packs may include a first battery pack having a basic interface and a second battery pack having an advanced interface. The power tools may include a first power tool having a basic interface and a second power tool having an advanced interface. The basic interface battery pack may mate with both the basic interface power tool and the advanced interface power tool. The advanced interface battery pack may mate with both the basic interface power tool and the advanced interface power tool.

Abstract: A battery pack includes a main frame supporting a battery cell, the main frame including a hook hole and a reinforcer adjacent to the hook hole; and a main cover coupled to the main frame, the main cover including a hook inserted into and retained in engagement with the hook hole, wherein the reinforcer faces the hook hole with the hook therebetween to support the hook.

Abstract: Aspects of the disclosure relate to a service port for an electrical power supply such as a battery. The service port may be an integrated pressure equalization and electrical probe port. In one or more implementations, the service port may include a housing have an open bore within which an electrical header is disposed. A gap may be provided between the electrical header and the housing to allow airflow though the service port into and/or out of an internal chamber of the electrical power supply for pressure equalization of the internal chamber. In one or more implementations, a breather element may be disposed in a distal end of the housing of the service port.

Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.

Abstract: A method for manufacturing a solventless multilayered electrode may include mixing electrode particles with binders to form dry electrode mixtures, compressing the dry electrode mixtures to form electrode films, stacking the electrode films, and compressing the stacked electrode films. Suitable electrode films may include active material particles, conductive particles, electrochemically inactive ceramic particles, and/or the like. In some examples, compressing the stacked electrode films may include compressing the electrode films between pairs of rollers having patterns disposed on one or more exterior surfaces, thereby increasing surface roughness of the electrode films. A system for manufacturing solventless multilayered electrodes may comprise a first plurality of rollers configured to compress dry electrode mixes into electrode films, and a second plurality of rollers configured to compress a stack of electrode films into a single electrode stack.

Abstract: A method for producing a high-nickel positive electrode active material, a positive electrode active material produced thereby, and a positive electrode and a lithium secondary battery including the same is provided. The method includes preparing a lithium composite transition metal oxide having a nickel content of 80 atm % or greater among transition metals, washing the lithium composite transition metal oxide, and mixing the washed lithium composite transition metal oxide with an aluminum raw material and heat treating the mixture at a temperature of 650° C. to 690° C. to obtain a positive electrode active material having a surface portion doped with aluminum.

Abstract: A frame structure assembly kit is provided. The frame structure assembly kit includes: a bottom frame structure including a plurality of longitudinal bottom frames and a plurality of lateral bottom frames assembled into a grid or ladder, wherein a part of the longitudinal bottom frames and/or the lateral bottom frames bends or extends upward to form at least one guide for determining the position of each battery unit; a top frame structure including a plurality of top longitudinal frames and a plurality of top lateral frames assembled into a grid or ladder; and a plurality of pillars having a length corresponding to the height of the battery units for connecting four corners of the bottom frame structure to the respective four corners of the top frame structure into a rectangular housing capable of accommodating the battery units.

Abstract: A configuration is adopted in which a terminal module includes a voltage detection terminal having a terminal connection part connected to an electrode terminal and a wire connection part connected to a wire, and a protector housing at least part of the voltage detection terminal, with two liquid draining parts each including a first extension part extending downward in the direction of gravity being provided between the terminal connection part and the wire connection part in the voltage detection terminal, and the protector having a housing part housing the liquid draining parts and accumulating liquid that travels along the first extension part.

Abstract: This application provides a positive-electrode plate, including a current collector, and a first active substance layer and a second active substance layer that are sequentially disposed on a surface of the current collector. The first active substance layer includes a first positive-electrode active material, and the first positive-electrode active material includes at least one of a compound represented by Formula (I) Li1+x1Mna1M1-a1O2-y1Ay1 or a compound represented by Formula (II) Li1+x2Mna2N2-a2O4-y2By2. The second active substance layer includes a second positive-electrode active material having a pH value of from 10˜12. In this application, the active substance layer that includes high-pH positive-electrode active material is disposed outside the active substance layer that includes a lithium manganese-based positive-electrode active material, so as to make a layered electrode plate.

Abstract: A negative electrode active material according to one embodiment of the present disclosure comprises: a composite oxide phase that contains Li, Si, Al and B; and Si particles that are dispersed in the composite oxide phase. Relative to the total number of moles of elements (excluding O) contained in the composite, oxide phase, the content of Li is from 5% by mole to 20% by mole (inclusive), the content of Si is from 50% by mole to 70% by mole (inclusive), the content of Al is from 12% by mole to 25% by mole (inclusive), and the content of B is from 12% by mole to 25% by mole (inclusive).

Abstract: In various embodiments, an energy storage mounting system includes an inverter wall bracket mounted to a wall, wherein an inverter is coupled to the inverter wall bracket. The system includes a battery wall bracket to which a battery block is coupled. The battery wall bracket interfaces with an auxiliary bracket that is mounted to the wall, is vertically translatable relative to the auxiliary bracket, and is at least in part ground-supported. The battery block is electrically connected to the inverter.