An electrode core assembly includes an encapsulation film, and an electrode core and a spacer that are disposed in an accommodating cavity defined by the encapsulation film. The electrode core includes an electrode core body and two electrode lead-out members that are electrically connected to the electrode core body. The length of the electrode core body extends along a first direction. Each of two opposite ends of the electrode core body in the first direction includes a V-shaped end in a cross-sectional view with a tip protruding outward from the electrode core body. The two electrode lead-out members are connected to the electrode core body at the tips of the two V-shaped ends. The spacer includes an inclined portion disposed on one of the V-shaped ends and has an electrode lead-out hole penetrating through the spacer and being configured to allow the electrode lead-out member to pass through.

An all solid battery includes a multilayer chip in which each of a plurality of solid electrolyte layers including solid electrolyte and each of a plurality of internal electrodes including an electrode active material are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two side faces of the multilayer chip other than two end faces of a stacking direction of the multilayer chip, and a pair of external electrodes that contacts the two side faces. At least one of the pair of external electrodes includes an electrode active material of which a pole is a same as that of an electrode active material of the internal electrode which contacts the one of the pair of external electrodes.

A secondary battery assembly includes an electrode assembly having mutually perpendicular transverse, longitudinal, and vertical axes corresponding to X, Y and Z axes, respectively. A constraint is disposed on an outer surface of the electrode assembly. At least one of the electrode assembly or constraint has a protrusion extending in an X-Y plane defined by the X and Y axes and having a first radius of curvature in the X-Y plane. A battery enclosure encloses the electrode assembly and the constraint. An enclosure protection layer is disposed over at least a portion of the protrusion and between the protrusion and the battery enclosure. The enclosure protection layer defines a second radius of curvature overlying the first radius of curvature in the X-Y plane. The second radius of curvature is greater than the first radius of curvature to thereby reduce the potential of the protrusion causing damage to the battery enclosure.

The present disclosure provides a secondary battery in which an anti-corrosion layer of an organic/inorganic mixed layer is formed on a part of an inner surface of the battery case of a cylindrical secondary battery and the battery case of a prismatic secondary battery.

The present invention relates to a pouch-shaped battery cell having an electrode assembly in a pouch-shaped battery case, the electrode assembly including positive electrodes and negative electrodes, each of the positive electrodes and the negative electrodes having a structure in which the length of the electrode in a width direction is less than the length of the electrode in a length direction, each of the positive electrodes and the negative electrodes has an uncoated portion extending parallel to outer peripheries of the electrode in the overall width direction or outer peripheries of the electrode in the overall length direction and a coated portion, which is coated with an electrode mixture, formed at the remaining portion of the electrode excluding the uncoated portion, and a stepped structure is formed at the part of the pouch-shaped battery case corresponding to the uncoated portion so as to be recessed inwards.

The present invention relates to a pouch-shaped battery cell having an electrode assembly in a pouch-shaped battery case, the electrode assembly including positive electrodes and negative electrodes, each of the positive electrodes and the negative electrodes having a structure in which the length of the electrode in a width direction is less than the length of the electrode in a length direction, each of the positive electrodes and the negative electrodes has an uncoated portion extending parallel to outer peripheries of the electrode in the overall width direction or outer peripheries of the electrode in the overall length direction and a coated portion, which is coated with an electrode mixture, formed at the remaining portion of the electrode excluding the uncoated portion, and a stepped structure is formed at the part of the pouch-shaped battery case corresponding to the uncoated portion so as to be recessed inwards.

A battery cell, suitable for use in an electric vehicle, includes a prismatic conductive casing having an electrically conductive casing body with a width (W), a height (H) and a thickness (T) and having a generally rectangular cross-section when seen in the thickness direction (z). A stack of layer assemblies is accommodated in the casing body, each layer assembly including a cathode layer, an anode layer and a separator layer there between, the layers extending in a width direction (x) and in a height direction (y) and being of a generally rectangular shape, a stack height extending in the thickness direction (z). The cathode and anode layers each include a cathode tab and an anode tab, respectively, one set of tabs extending in the width direction (x) along a lower part, substantially along the width (W) of the casing and being in conductive contact with a bottom of the casing.

The application discloses a lithium-ion cell, a battery and a power device, which belongs to the technical field of lithium-ion battery structure. A side surface of an end portion of a cell body of the lithium-ion cell has a thin area relative to a middle portion of the cell body, and the lithium-ion cell further includes adhesive paper attached to the thin area. In this application, a special adhesive paper is designed and attached to the thin area formed due to thinning processing at the edge of the end portion of the lithium-ion cell body, and is suitable for compensating for the thin area of the lithium-ion cell, so that the cell has a flat surface, is stressed uniformly during hot-pressing formation and has a good bonding.

The application discloses a lithium-ion cell, a battery and a power device, which belongs to the technical field of lithium-ion battery structure. A side surface of an end portion of a cell body of the lithium-ion cell has a thin area relative to a middle portion of the cell body, and the lithium-ion cell further includes adhesive paper attached to the thin area. In this application, a special adhesive paper is designed and attached to the thin area formed due to thinning processing at the edge of the end portion of the lithium-ion cell body, and is suitable for compensating for the thin area of the lithium-ion cell, so that the cell has a flat surface, is stressed uniformly during hot-pressing formation and has a good bonding.

A battery includes a casing, a cover plate, and a core. The cover plate is configured to cover the casing, and the core is disposed in the casing. A plurality of tabs is connected between the core and the cover plate. A tab bending space is formed between the cover plate and the core, and the tabs are disposed in the tab bending space. A height of the tab bending space along a first direction is greater than D/10 and less than 3D/4, and D is a thickness of the core.