Provided is a sodium ion conductor whose sodium ion conductivity is improved more than the conventional. The sodium ion conductor is a molecular crystal constituted of NaCB.sub.9H.sub.10, NaCB.sub.11H.sub.12, and a sodium halide, the sodium halide having a mol fraction of more than 0 and at most 70 on the basis of the total mol ratio of NaCB.sub.9H.sub.10, NaCB.sub.11H.sub.12, and the sodium halide.

The invention relates to an electrochemical cell unit for storing electrical energy, in which the electrochemical cell unit includes at least two lithium-ion pouch cells, a planar element for orienting the at least two lithium-ion pouch cells, and a cell carrier. The at least two lithium-ion pouch cells are provided in the cell carrier and are in electrical contact. The at least two lithium-ion pouch cells also have a first and a second terminal lug. The planar element is provided, preferably centrally, in the cell carrier and in addition, is sandwiched between the at least two lithium-ion pouch cells, at least some portions of the planar element being in contact with the pouch cells.

A battery module includes a battery cell assembly having a plurality of battery cells, a sensing assembly which covers a front and rear of the battery cell assembly when mounted thereto, a module case which receives the battery cell assembly and the mounted sensing assembly, and a thermally conductive adhesive interposed between an upper inner surface of the module case and an upper side of the battery cell assembly. The sensing assembly includes a first busbar frame assembly positioned at the front of the battery cell assembly, a second busbar frame assembly positioned at the rear of the battery cell assembly, and a sensing wire which connects the first and second busbar frame assemblies and runs across the upper side of the battery cell assembly in a diagonal direction. The thermally conductive adhesive is disposed on two sides of the sensing wire.

A rechargeable battery using a solution of an aluminum salt as an electrolyte is disclosed, as well as methods of making the battery and methods of using the battery.

Systems and methods for using an ultrasonic vibration generator to apply vibrational energy to a metal negative electrode of a rechargeable battery. In some examples, the application of vibrational energy to the metal negative electrode occurs during a charging event.

A bus bar module includes bus bars electrically connected with battery cells included in a battery module, and an insulating case including a housing unit that accommodates the bus bars and a routing path in which a voltage detection line connected with the bus bars is routed. The bus bars include a first bus bar group arrayed in a direction in which the battery cells are arranged, and a second bus bar group parallel to the first bus bar group and arrayed in the direction in which the battery cells are arranged. The routing path includes a first routing path extending along the first bus bar group, a second routing path extending along the second bus bar group, and at least one connection path connecting the first routing path and the second routing path.

The present invention provides a secondary battery. The secondary battery comprises a first electrode tab and a first electrode plate. The first electrode plate first electrode plate comprises a first current collector, a first active layer, a first electrode tab receiving groove and a first electrode plate notch. The first active layer is disposed on a surface of the first current collector. The first electrode tab receiving groove is configured to receive the first electrode tab, and the first electrode tab is electrically connected with the first current collector through the first electrode tab receiving groove. The first electrode plate notch is disposed on an edge of the first electrode tab receiving groove.

Provided is a rectangular secondary cell enabling seal performance of a gasket to be improved with a simple structure without enlarging a shaft of a terminal. A rectangular secondary cell according to the present invention includes a cell can housing a winding group and having an opening portion, a lid provided with a positive electrode terminal electrically connected to the winding group and closing the opening portion, and a gasket having an interposed portion interposed between the lid and a lower surface of the positive electrode terminal. In the gasket, an external shape of the interposed portion is smaller than an external shape of the lower surface of the positive electrode terminal.

A slurry is prepared by mixing active material particles, capsule-shaped particles, a binder, and an organic solvent. The slurry is applied to a surface of a substrate to form a coating film. The coating film is heated to dry to form an active material layer. The active material layer is compressed to produce an electrode. Each of the capsule-shaped particles includes a thermoplastic resin. The thermoplastic resin softens when heated in the presence of the organic solvent. When the thermoplastic resin softens, the capsule-shaped particles shrink to form voids in the active material layer.

Embodiments of the disclosure provide a battery management system (BMS) including: a first controller monitoring a first battery cell array having at least one battery cell and configured to measure an operating parameter of the first battery cell array; and a second controller monitoring a second battery cell array having at least one battery cell and configured to measure an operating parameter of the second battery cell array, and communicatively coupled to the first controller. The first controller is selectable between: an active mode for receiving the measured operating parameter of the second battery cell array from the second controller, and detecting a fault in the first or the second battery cell array based upon the measured operating parameters thereof, and a passive mode for measuring the operating parameter of the first battery cell array, and transmitting the measured operating parameter to the second controller.