A secondary battery pack includes: a first battery; a second battery; a third battery including positive, negative and bipolar terminals; a first connector electrically connecting a negative terminal of the first battery and the positive terminal of the third battery; and a second connector electrically connecting a positive terminal of the second battery and the negative terminal of the third battery. The third battery includes bipolar electrodes individually located in the spaces between positive electrodes and negative electrodes neighboring each other, the bipolar electrodes having an intermediate electrode potential between the positive electrode and the negative electrode; an electrolyte; a positive-electrode connection member electrically connecting the positive terminal of the third battery and the positive electrodes; a negative-electrode connection member electrically connecting the negative terminal and the negative electrodes; and a bipolar-electrode connection member electrically connecting the bipolar terminal and the bipolar electrodes.

Provided are a non-aqueous electrolyte secondary battery including a positive electrode having a positive electrode collector and a positive electrode active material layer in contact with the positive electrode collector; a negative electrode having a negative electrode collector and a negative electrode active material layer in contact with the negative electrode collector; and a separator disposed between the positive electrode and the negative electrode, in which at least one of the positive electrode collector or the negative electrode collector is a laminate having a resin film and a laminated structure of a conductive layer and a contact resistance reducing layer disposed on one or both surfaces of the resin film; a collector suitable for use in the non-aqueous electrolyte secondary battery; and a method for manufacturing the non-aqueous electrolyte secondary battery.

Energy storage devices, battery cells, and batteries of the present technology may include a first cell and a second cell disposed adjacent the first cell. The devices may include a stacked current collector coupled between the first cell and the second cell. The current collector may include a grid or matrix, and may include a combination of conductive and insulative materials.

An electrolytic solution for an electrochemical device, including: a cation (C) that is a monovalent to trivalent metal ion; an anion (A); a solvent (SO) that is a compound having a molecular weight of 1,000 or less; and a polymer (P) that has a weight-average molecular weight of more than 10,000, wherein a content ratio of the solvent (SO) relative to 1 mol of the cation (C) is 0.5 to 4 mol, and a content ratio of the polymer (P) is 0.5% by weight or more. Also provided are a plastic composition, an electrode sheet, an insulating layer, and an electrochemical device including the electrolytic solution, as well as producing methods of these.

A bipolar electrode comprising a cathode substrate loaded with a halogen complexing agent that has a structure of formula Q.sup.+(R.sup.A)(R.sup.B)(R.sup.C)(R.sup.D)X.sup.−, is disclosed. The bipolar electrode also comprises a bipolar electrode plate having a cathode surface and an anode surface, wherein the cathode surface opposes the anode surface. The cathode surface at least partially contacts the cathode substrate. An electrochemical cell and a battery stack comprising the bipolar electrode, and a process for manufacturing the bipolar electrode are also disclosed.

A bipolar current collector includes a porous substrate, a first metal, and a second metal. The first metal exists on one surface of the porous substrate. The second metal exists on another surface of the porous substrate. At least one of the first metal or the second metal exists inside the porous substrate. The porous substrate possesses advantages of oxidation resistance, reduction resistance, and ion insulation, and some mechanical strength. A metal layer of the bipolar current collector possesses advantages of high electron conductivity and ion insulativity, high mechanical strength, and high thermal stability. In addition, both surfaces of the bipolar current collector are rough to some extent, thereby optimizing interfacial bonding of positive and negative films on both sides to a composite bipolar current collector, and increasing the bonding force of the film.

A battery plate having a substrate with opposing surfaces and one or more nonplanar structures and one or more active materials disposed on at least one of the opposing surfaces; wherein the battery plate includes one or more of: i) one or more projections disposed within but do not extend beyond the active material; ii) one or more projections which project beyond the active material and substantially free of the active material or dust formed from the active material; and/or iii) a frame about the periphery of the substrate which projects beyond the active material and is substantially free of the active material or dust formed from the active material; and wherein the battery plate is adapted to form part of one or more electrochemical cells in a battery assembly.

A static battery with a non-conductive elastomeric or thermoplastic housing. The, battery housing is adapted to receive at least one anode assembly, at least one cathode assembly, and at least one bipolar electrode assembly. At least the bipolar electrode assembly is formed from a conductive plastic resin that is formed as a CPE sheet. A carbon material is affixed to the CPE sheet to form the bipolar electrode. The at least one cathode assembly, the at least one anode assembly and the at least one bipolar electrode assembly are received into the battery box such that a liquid, and/or gas seal is formed, between electrode assemblies. The battery housing has slots into which the electrode assemblies are received. When the electrode assemblies are received into the housing, cells are formed by the cooperation of the electrode assemblies and the battery housing. The cells are then filled with electrolyte such as zinc bromide and a lid is placed on the battery box. Once sealed the battery box is a liquid tight container for the battery.

Proposed is a transport device for transporting a carrier in the form of a foil for producing electrodes for energy accumulators, in particular electrodes for lithium-ion batteries, having at least two rollers on which the carrier is able to be borne, and of which at least one roller is provided with a drive so as to transport the carrier from roller to roller. Provided for reducing creasing is a drive device for generating an additional force that facilitates transport, wherein the drive device for generating an alternating magnetic field has an alternating field generator which generates a temporally alternating magnetic field, the magnetic field being oriented such that, in addition to the effect of force in the transport direction, an effect of force perpendicular to the transport direction is initiated in the plane of the carrier.

Disclosed is a battery comprising a cathode, an anode and an electrolyte; the cathode comprises a cathode material, the cathode material comprises a cathode active material which is capable of reversibly intercalating and deintercalating a first metal ions; the electrolyte comprises at least a solvent capable of dissolving solute, the solute being ionized to a second metal ions that can be reduced to a metallic state during a charge cycle and be oxidized from the metallic state to the second metal ions during a discharge cycle and the first metal ions that can deintercalate from the cathode active material during the charge cycle and intercalate into the cathode active material during the discharge cycle; and the anode and/or the electrolyte further comprise an additive which is a bismuth compound. The gas production amount could be effectively reduced when the battery is being used.