A secondary battery may include: an electrode assembly in which a positive electrode, a negative electrode, and a separator are wound or stacked; an insulator on at least one of an upper portion and a lower portion of the electrode assembly; and a battery case configured to accommodate the electrode assembly, the insulator, and an electrolyte and sealed by a cap assembly, wherein the insulator includes: a peripheral portion having a disk ring shape and made of a rigid material; and a central portion extending inward from an inner circumferential surface of the peripheral portion and including a textile fabric having high-temperature resistance.

The present disclosure provides a battery. The battery includes a separation structure having a resistance greater than a resistance threshold; a positive electrode of the battery and a negative electrode of the battery disposed on two sides of the separation structure; a liquid conductor configured to transport conductive ions between the positive electrode and the negative electrode; a storage structure configured to store supplementary material to release into the liquid conductor; and an enclosure configured to form an enclosed cavity to accommodate the separation structure, the positive electrode, the negative electrode, the liquid conductor, and the storage structure.

A laminated core includes a case, a laminated core, and a cap assembly. The laminated core includes multiple electrode clusters. Each electrode cluster includes multiple laminated electrodes and multiple tabs. Each tab extends out of a corresponding one of the electrodes. The multiple tabs of each electrode clusters form a tab bundle, and the tab bundle is connected to one pin. The cap assembly includes a connection portion and a pole, the pin is slidably connected to the connection portion, and electrically connected to the pole through the connection portion.

A laminated core includes a case, a laminated core, and a cap assembly. The laminated core includes multiple electrode clusters. Each electrode cluster includes multiple laminated electrodes and multiple tabs. Each tab extends out of a corresponding one of the electrodes. The multiple tabs of each electrode clusters form a tab bundle, and the tab bundle is connected to one pin. The cap assembly includes a connection portion and a pole, the pin is slidably connected to the connection portion, and electrically connected to the pole through the connection portion.

A tamper resistant device comprises an internal component, such as an electronic device, and a latent battery that is connected to the internal component. An activator material is separated from the latent battery by a rupturable barrier that is adapted to rupture, shatter, or otherwise degrade in response to a stimulus associated with a physical tampering event. The activator material is a material that causes the latent battery to output electrical power when in contact with the latent battery. In some examples, the electrical power provided when the activator material contacts the latent battery is used to trigger a security response which can include transmission of an alarm signal and/or erasure of data stored by the internal component.

An object is especially to provide a metal-air battery unit that has a compact configuration including a water supply space and an electrical system space. The metal-air battery unit of the present invention includes a unit main body including a plurality of metal-air battery cells, a water supply space supplying an electrolyte to the metal-air battery cells and an electrical system space coupling to a positive electrode and a negative electrode of the metal-air battery cell to control a battery output, disposed on an outer surface of the unit main body.

Thin magnesium plate 101, which contains metal magnesium, is enclosed by separator 102, which is made of fluid-permeable material and is used as magnesium fuel assembly 100 in magnesium battery 120 in this invention. Magnesium fuel assembly 100 is enclosed from both sides by cathode 103 and provided with electrolyte retention unit 106, which stores electrolyte 107, at its bottom. When magnesium fuel assembly 100 is pushed down from above, separator 102 is impregnated with electrolyte 107, thereby initiating the battery reaction.

A lithium secondary battery includes: an electrolyte replenishing unit filled with a preliminary electrolyte inside a packaging member; and a rupture member disposed adjacent to the electrolyte replenishing unit. The rupture member is deformed by a temperature change to form a hole in the packaging member so that the preliminary electrolyte inside the electrolyte replenishing unit can be injected.

A lithium secondary battery includes: an electrolyte replenishing unit filled with a preliminary electrolyte inside a packaging member; and a rupture member disposed adjacent to the electrolyte replenishing unit. The rupture member is deformed by a temperature change to form a hole in the packaging member so that the preliminary electrolyte inside the electrolyte replenishing unit can be injected.

A system includes a stack of battery cells within a container. An interior space of the container is filled with a coolant in direct contact with the cells. There need be no intervening containers between the coolant in the interior space of the container, and the cells. A method can include detecting a thermal runaway event in one or more of the cells, and admitting some of the coolant at a first pressure into the one or more cells at a second pressure lower than the first pressure.