Disclosed is a compact secondary battery module, which includes a cartridge assembly having a plurality of cartridges stacked while accommodating cells, respectively, so that a plurality of lead overlapping portions where leads of adjacent cells overlap with each other are located at a cartridge sidewall with a predetermined pattern; and a sensing housing having a plurality of bus bars located and welded corresponding to the lead overlapping portions, respectively, the sensing housing being capable of being arranged at a side of the cartridge assembly, wherein a first lead of a cell of each lead overlapping portion is configured to have a shorter width than a second lead having a polarity opposite to the first lead as much as a predetermined width, and in a state where the sensing housing is coupled to the cartridge assembly, a corresponding bus bar comes into contact with the second lead substantially on the same line as the first lead, and the second lead and the bus bar are welded to each other.

A copper bar protection structure (10) includes an upper housing (11) and a lower housing (12) that are engaged with each other. A receiving groove (14) is provided on each of engagement surfaces (15) of the upper housing (11) and the lower housing (12). The two receiving grooves (14) are combined into a copper bar accommodating space. A phase change material layer (30) is laid on an inner wall (13) of the receiving groove (14). The copper bar (20) is wrapped by the phase change material layer (30) when the copper bar accommodating space accommodates a copper bar (20).

A copper bar protection structure (10) includes an upper housing (11) and a lower housing (12) that are engaged with each other. A receiving groove (14) is provided on each of engagement surfaces (15) of the upper housing (11) and the lower housing (12). The two receiving grooves (14) are combined into a copper bar accommodating space. A phase change material layer (30) is laid on an inner wall (13) of the receiving groove (14). The copper bar (20) is wrapped by the phase change material layer (30) when the copper bar accommodating space accommodates a copper bar (20).

A battery cell includes: an electrode assembly; an exterior container; two electrode terminals provided on an upper surface of the exterior container and arranged side by side in a first direction; and an insulating sheet that is in a form of a film and that is provided on the outer surface of the exterior container. The insulating sheet has a folded portion that reaches the upper surface from a short side surface of the exterior container. The folded portion includes a peak portion and valley portions, the peak portion protruding from the short side surface side to the two electrode terminals side along the first direction, the valley portions being located on both sides with respect to the peak portion in a second direction orthogonal to the first direction, each of the valley portions being recessed toward a side away from the two electrode terminals.

A battery cell includes: an electrode assembly; an exterior container; two electrode terminals provided on an upper surface of the exterior container and arranged side by side in a first direction; and an insulating sheet that is in a form of a film and that is provided on the outer surface of the exterior container. The insulating sheet has a folded portion that reaches the upper surface from a short side surface of the exterior container. The folded portion includes a peak portion and valley portions, the peak portion protruding from the short side surface side to the two electrode terminals side along the first direction, the valley portions being located on both sides with respect to the peak portion in a second direction orthogonal to the first direction, each of the valley portions being recessed toward a side away from the two electrode terminals.

Provided is a battery wiring module that can reduce damage of electric wires. The battery wiring module has: a module-side terminal electrically connected to a bus bar connecting battery terminals of a plurality of battery cells; an electric wire with one end side to which the module-side terminal is connected; and a housing for accommodating the electric wire and the module-side terminal. The housing has a terminal accommodating portion for accommodating the module-side terminal. The battery wiring module includes a partition wall portion that is provided such that the module-side terminal disposed on the bottom portion of the terminal accommodating portion is located between the partition wall portion and the bottom portion, and separates the module-side terminal and the electric wire.

The present application provides an electrical cigarette and a battery assembly thereof, wherein a first charging electrode assembly is arranged at a front end of the battery assembly, such that the battery assembly can be directly inserted into a charger to be charged without removing an atomizing assembly, therefore the operation is more convenient and disadvantages caused by frequent disassembling and assembling may be avoided. In addition, under the action of a charging management circuit, the electrode assembly at the front end can only be charged but cannot discharge, thereby avoiding an occurrence of a short circuit when the charging terminal discharges, extending the service life of the battery, and further avoiding a hidden danger of battery liquid leakage caused by the short circuit. In addition, since the front end of the electronic cigarette can not discharge, a situation that the electronic cigarette still has a low battery even been charged for a long time will not happen.

The purpose of the present disclosure is to provide a cylindrical battery in which a short circuit between an outer can and a sealing body can be suppressed. In a cylindrical battery (10) according to an embodiment of the present disclosure, a gasket (28) includes an extension part (29) extending from between a sealing body (17) and a tip (33a) on a radially inward side of a shoulder (33) of an outer can (16). The extension part (29) is arranged so that the gasket (28) intersects any straight lines connecting an upper surface (47) of the shoulder (33) opposite to the electrode body side in the axial direction and an upper surface (41) of an inner portion (40) opposite to the electrode body side in the axial direction, the inner portion (40) being located radially inward of the shoulder (33) in the sealing body (17).

A secondary battery includes an electrode body including a positive-electrode sheet and a negative-electrode sheet, an exterior body having an opening and accommodating the electrode body, a sealing body sealing the opening, a terminal electrically connected to the positive-electrode sheet and extending through a through-hole formed in the sealing body, and a conductive member connected to the terminal outside the sealing body. The conductive member includes a fuse. The fuse is covered by a cover. An insulating member is disposed between the conductive member including the fuse and the sealing body.

A prismatic lithium ion battery cell includes a packaging having a cover. A power assembly disposed within the packaging has a first (e.g., negative) side and a second (e.g., positive) side. A terminal pad is electrically coupled to the first side, while the cover is electrically coupled to the second side, of the power assembly. The cover includes a spiral disk feature disposed below the terminal pad and a reversal disk disposed below the spiral disk feature. The reversal disk is configured to deflect upwards to displace the spiral disk feature to contact the terminal pad in response to a pressure within the packaging being greater than a first predefined pressure threshold, forming an external short-circuit between the first and second sides of the power assembly. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow within the power assembly.