A battery includes: a power generating element that includes a first electrode layer, a second electrode layer, and a solid electrolyte layer positioned between the first electrode layer and the second electrode layer; and an insulating member. A chamfered portion is provided at least in a part of corner portions of the power generating element. The insulating member covers at least a part of the chamfered portion.

A battery includes: a power generating element that includes a first electrode layer, a second electrode layer, and a solid electrolyte layer positioned between the first electrode layer and the second electrode layer; and an insulating member. A chamfered portion is provided at least in a part of corner portions of the power generating element. The insulating member covers at least a part of the chamfered portion.

According to various embodiments disclosed herein, a battery and/or an electronic device including the same may include: a battery cell; and a circuit board assembly including a charge protective circuit, the circuit board assembly being disposed on one side of the battery cell, wherein the circuit board assembly may include a first side surface disposed in a longitudinal direction or a width direction to face the battery cell, at least one first part having a first thickness in a thickness direction perpendicular to the longitudinal direction or the width direction, and at least one second part having a second thickness greater than the first thickness, and a portion of the second part may provide a dispersion area including at least a portion of the first side surface.

According to various embodiments disclosed herein, a battery and/or an electronic device including the same may include: a battery cell; and a circuit board assembly including a charge protective circuit, the circuit board assembly being disposed on one side of the battery cell, wherein the circuit board assembly may include a first side surface disposed in a longitudinal direction or a width direction to face the battery cell, at least one first part having a first thickness in a thickness direction perpendicular to the longitudinal direction or the width direction, and at least one second part having a second thickness greater than the first thickness, and a portion of the second part may provide a dispersion area including at least a portion of the first side surface.

A battery is provided that suppresses the occurrence of an internal short circuit due to a turned-up portion generated in a positive electrode. A secondary battery includes an electrode wound body, a positive electrode current collector plate, and an outer package can. The electrode wound body includes a positive electrode having a band shape and a negative electrode having a band shape, the positive electrode and the negative electrode being in a stacked arrangement with a separator interposed therebetween, and being wound. The outer package can contains the electrode wound body and the positive electrode current collector plate. The positive electrode includes a positive electrode active material covered part in which a positive electrode foil is covered with a positive electrode active material layer, and a positive electrode active material uncovered part. The secondary battery includes a flat surface formed by the positive electrode active material uncovered part that protrudes from one end of the electrode wound body being bent toward a central axis of the electrode wound body and portions of the positive electrode active material uncovered part overlapping each other. The flat surface is joined to the positive electrode current collector plate. The positive electrode active material uncovered part has a cutout at one end on an outer periphery side of the electrode wound body.

A battery pack core may include a cold plate comprising a plurality of apertures defined between a first major surface and a second major surface of the cold plate; a plurality of battery cells, a single battery cell positioned in each aperture of the plurality of apertures such that a first end of the battery cell projects beyond the first major surface and a second end of the battery cell projects beyond the second major surface; and a plurality of silicone bushings, a silicone bushing surrounding each battery cell of the plurality of battery cells and contacting a wall of the aperture in which the battery cell is positioned.

An electrochemical cell includes a positive electrode including a first current collector, one or more first tabs, and a first active material. A negative electrode includes a second current collector, one or more second tabs, and a second active material. A separator is disposed between the positive electrode and the negative electrode. A resistive coating is configured to at least partially coat one or both of the first current collector, the second current collector, the one or more first tabs, and the one or more second tabs.

In a battery module including a plurality of battery blocks, the battery block is configured such that a plurality of assembled batteries each of which is formed of the plurality of batteries are arranged in parallel. The battery has a positive-electrode terminal and a negative electrode terminal on one end portion of the battery. The assembled battery includes a positive electrode bus bar for connecting the plurality of batteries in parallel and a negative electrode bus bar for connecting the plurality of batteries in parallel, which are disposed on one end portions of the batteries. On a boundary portion between the battery blocks, the positive electrode bus bars of the respective assembled batteries of one battery block and the negative electrode bus bars of the respective assembled batteries of the other battery block are respectively connected to each other in series by an inter-block connecting bus bar.

A terminal includes a substrate made of metal, an electrode portion that is formed of the same material as the substrate and functions as an electrode, and an insulating resin that is provided between the substrate and the electrode portion so as to surround the electrode portion and insulates the substrate and the electrode portion from each other.

A terminal includes a substrate made of metal, an electrode portion that is formed of the same material as the substrate and functions as an electrode, and an insulating resin that is provided between the substrate and the electrode portion so as to surround the electrode portion and insulates the substrate and the electrode portion from each other.