A battery pack system is provided with an integrated battery disconnect mechanism. The battery pack system includes a circuit board and one or more battery packs connected to the circuit board. A battery pack of the one or more battery packs is connected to the circuit board via one or more connectors. The battery pack system also includes a disconnect mechanism configured to disconnect the battery pack from the circuit board with a failure event at the battery pack by disconnecting the one or more connectors connecting the battery pack to the circuit board. In an enhanced aspect, the battery pack is suspended from the circuit board by the one or more connectors, and the disconnecting of the one or more connectors by the disconnect mechanism with the failure event releases the battery pack to drop away from the circuit board.

A packaging material for a power storage device includes a structure made up of a cover layer, a barrier layer, a sealant adhesive layer, and a sealant layer laminated in this general order. In the packaging material, the barrier layer has an aluminum foil layer and an anticorrosion treatment layer that is provided to a sealant layer side surface of the aluminum foil layer and faces the sealant adhesive layer. The sealant layer side surface of the aluminum foil layer has a 60 glossiness that is 690 or less in both MD and TD, and has a difference in 60 glossiness between MD and TD that is 100 or less.

A prefabricated collector in a lithium ion battery module where the collector has a plurality of wells each of which to receive a lithium ion battery cell and to act both as a gas barrier and a conductor of current.

A connection conductor and a relay terminal are electrically connected together directly, the connection conductor being electrically connected to one of the two opposite electrode terminals of a battery cell, the relay terminal being provided to an extremity of a voltage detection conductor electrically connected to a voltage detector. The relay terminal has a fusible part operable to fuse and break when an overcurrent flows through the fusible part, wherein a sectional area of the fusible part perpendicular to a direction in which the voltage detection conductor extends is smaller than a sectional area of any other part of the relay terminal perpendicular to the direction.

Non-aqueous electrolyte secondary battery cell having safety and increased energy density, and battery using same. The cell is shaped as a rounded square tube. A core material for preventing electrolyte permeation is at the cell center, the core member being a hollow cylindrical insulator of square cross-section. A cell monitoring system such as a temperature sensor is provided in the hollow part of the core material. A cell base member including positive electrode member, separator, and negative electrode member of a non-aqueous electrolyte secondary battery is wound around the core material. Terminals made of electroconductive metal electrically connected to the collector of the positive electrode member or the collector of the negative electrode member are exposed to the cell exterior. The temperature sensor is attached to the center part of the hollow part of the core material in close contact with the core material.

An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention.

The present invention provides a unit cell for a nickel-zinc battery in the form of a cell pack having positive and negative electrodes reliably separated by a hydroxide ion-conductive separator, which can be readily handled and is very advantageous for forming an assembled battery. The nickel-zinc cell pack of the invention includes: a flexible bag comprising flexible films; a separation sheet liquid-tightly connected to the interior of the flexible bag to separate a positive-electrode chamber and a negative-electrode chamber for inhibiting liquid communication therebetween; a positive electrode and a positive-electrode electrolytic solution disposed in the positive-electrode chamber; a negative electrode and a negative-electrode electrolytic solution disposed in the negative-electrode chamber, wherein the separation sheet comprises a separator structure comprising a separator exhibiting hydroxide-ion conductivity and water impermeability.

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.

There is disclosed an electrode cartridge for use in a hermetic zinc secondary battery comprising a separator structure including a separator exhibiting hydroxide ion conductivity and water impermeability; a counter member liquid-tightly sealed to the separator structure so as to form an internal space and constituting an open-top water impermeable case together with the separator structure; and an electrode that is accommodated in the internal space of the water impermeable case and is a negative electrode containing zinc and/or zinc oxide or a positive electrode. According to the present invention, there is provided an electrode built-in component that can reliably isolate the positive and negative electrodes from each other with a hydroxide ion conductive separator, in the form of an electrode cartridge that is easy to handle and manufacture and that is more advantageous for assembling a stacked-cell battery, while reducing the number of sealing joints.

A battery cell of a venting structure using taping is disclosed. The battery cell includes a battery case including a first case and a second case, at least one of the first and second cases being provided with a receiving part for receiving the electrode assembly, thermally bonded edges for sealing the receiving part being provided outside the receiving part, a positive electrode lead and a negative electrode lead protruding outward from the battery case, and an electrode assembly received in the battery case, the electrode assembly having electrode tabs protruding from one end thereof, the electrode tabs being coupled to the positive electrode lead and the negative electrode lead, wherein seal reinforcement tapes are attached to some of the thermally bonded edges so as to surround outer ends of the some thermally bonded edges.