An energy storage device includes: a conductive member (shaft portion) which penetrates a case and is connected to a terminal main body (bus bar connecting portion. The case includes: a through hole through which the conductive member penetrates; a concave portion which is at least a portion of a periphery of the through hole and is formed on one of an inner surface and an outer surface of the case, and a convex portion which is formed at a position opposite to the concave portion on an other of the inner surface and the outer surface of the case. In a plan view of the outer surface of the case, the terminal main body has a shape such that at least a portion of the terminal main body is larger than the concave portion.

A secondary battery including a pouch having recessed portions inwardly recessed at at least one of opposite sides of the pouch, an electrode assembly including first electrode plates, second electrode plates and separators, the separators being disposed between the first electrode plates and second electrode plates, the electrode assembly being inside the pouch, and a lead tab coupled to the electrode assembly and exposed to the outside of the pouch. The separators protrude from the first electrode plates or the second electrode plates by different protruding lengths at different regions corresponding to the recessed portions of the pouch in a thickness direction of the electrode assembly.

An electric storage module includes an electric storage cell and an enclosure, wherein the electric storage cell includes an electric storage element and an exterior body in which the electric storage element is sealed; the enclosure has a housing space in which the electric storage cell is housed; the enclosure has a through hole that connects the housing space and the exterior space; and the through hole is formed at a position corresponding to the part of the electric storage cell where the electric storage element does not exist.

A battery or an accumulator including an anode case, an anode situated inside the anode case, a cathode case joined to the anode case, a seal sealing the cathode case to the anode case, a cathode situated inside the cathode case between the anode and the cathode case, and a membrane between the anode and the cathode. An outer surface of the battery includes at least one marking.

A battery system has a cell including a container, a substrate mounted to the container, and circuitry on the substrate. The substrate defines antennas, a microprocessor, switches, and a transceiver. The microprocessor sequentially activates the switches to respectively connect the transceiver to the antennas to establish a location relative to a transmitter, and prevents communications with the transmitter responsive to the location falling outside a predefined range.

A pouch cell includes a generally rectangular cell housing formed of a metal laminated film that includes a box portion and a lid portion that is formed separately from the box portion. The active material including the electrode and an electrolyte is placed into the box portion and the lid portion is welded to the box portion. The box portion and the lid portion are formed and assembled together without using a drawing or a punching process. Instead, the pouch cell housing is formed via a series of folding and welding steps, whereby the pouch cell size is not limited by the draw depth of the metal laminated film.

A battery, a battery pack for the battery, and a busbar for connecting battery cells, the busbar having an electrically conductive metal sheet and having at least one sheet metal connector piece, which is incorporated into the metal sheet with the aid of a cutting method and which protrudes from the metal sheet; the sheet metal connector piece has a contacting part for electrically connecting to a pole of the battery cell and a safety part embodied in the form of a fuse. In order to create a busbar that is durable and simply designed and nevertheless has a high degree of fire safety, it is proposed that the safety part be embodied in the form of a coiled helical spring.

Improvements in the structural components and physical characteristics of lithium battery articles are provided. Standard lithium ion batteries, for example, are prone to certain phenomena related to short circuiting and have experienced high temperature occurrences and ultimate firing as a result. Structural concerns with battery components have been found to contribute to such problems. Improvements provided herein include the utilization of thin metallized current collectors (aluminum and/or copper, as examples), high shrinkage rate materials, materials that become nonconductive upon exposure to high temperatures, and combinations thereof. Such improvements accord the ability to withstand certain imperfections (dendrites, unexpected electrical surges, etc.) within the target lithium battery through provision of ostensibly an internal fuse within the subject lithium batteries themselves that prevents undesirable high temperature results from short circuits. Battery articles and methods of use thereof including such improvements are also encompassed within this disclosure.

A composite sheet includes a thermally-conductive sheet, a first insulating sheet that covers one surface of the thermally-conductive sheet; a second insulating sheet that covers another surface of the thermally-conductive sheet, and seals the thermally-conductive sheet between the first insulating sheet and the second insulating sheet, and a thermal insulation layer that is laminated between the thermally-conductive sheet and the first insulating sheet to cover at least a part of the thermally-conductive sheet.

The present disclosure provides secondary battery top cover assembly, secondary battery and vehicle. The top cover assembly includes: a top cover plate; an electrode terminal disposed on the top cover plate; an insulating cover; and a short-circuit component including a deformable plate and a conductive plate disposed above the deformable plate, the deformable plate is connected to the top cover plate, and the conductive plate is connected to the electrode terminal. The conductive plate includes a body portion and a protruding portion protruding upwardly from the body portion, and is provided with gas hole, and the protruding portion surrounds the gas hole. The insulating cover includes a covering portion disposed above the conductive plate and covering the protruding portion, a gas flow channel is formed between the protruding portion and the covering portion, and the gas hole communicates with outside of the top cover plate via the gas flow channel.