A battery pack includes a module stack body having a plurality of stacked battery modules; first and second connecting members each provided on the same surface of the module stack body in order to hold the stacked battery modules and extending in the stacking direction of the battery modules; a first reinforcing member fixed to the first and second connecting members at first and second fixed points; and a second reinforcing member fixed to the first and second connecting members at third and fourth fixed points. Orientation of the components along the stacking direction of the battery modules of vectors having respectively the first and third fixed points as a start point and the second and fourth fixed points as an end point are opposed to each other.

An electrode structure for use in an energy storage device, the electrode structure comprising a population of electrodes, a population of counter-electrodes and an electrically insulating material layer separating members of the electrode population from members of the counter-electrode population, each member of the electrode population having a longitudinal axis A.sub.E that is surrounded by the electrically insulating separator layer.

A flexible secondary battery includes: an electrode stack structure including a first electrode layer, a second electrode layer, and a separator disposed between the first and second electrode layers; and a binding structure surrounding the electrode stack structure, where the binder structure is in fixed contact with a first side of the electrode stack structure and is in slidable contact with a second side of the electrode stack structure.

A battery pack includes a thermally conductive plate that can be cooled or heated, and an array of electrochemical cells. The cells include a stacked or rolled arrangement of electrode plates, and a current collector disposed in the battery cell that forms an electrical connection with the electrode plates and provides a thermal conduction pathway for conducting heat from the electrode plates to the thermally conductive plate.

Various methods and apparatus relating to three-dimensional battery structures and methods of manufacturing them are disclosed and claimed. In certain embodiments, a three-dimensional battery comprises a battery enclosure, and a first structural layer within the battery enclosure, where the first structural layer has a first surface, and a first plurality of conductive protrusions extend from the first surface. A first plurality of electrodes is located within the battery enclosure, where the first plurality of electrodes includes a plurality of cathodes and a plurality of anodes, and wherein the first plurality of electrodes includes a second plurality of electrodes selected from the first plurality of electrodes, each of the second plurality of electrodes being in contact with the outer surface of one of said first plurality of conductive protrusions. Some embodiments relate to processes of manufacturing energy storage devices with or without the use of a backbone structure or layer.

A secondary battery includes a first electrode collector layer and a second electrode collector layer, which face each other, a plurality of first active material layers that electrically contact the first electrode collector layer and are substantially perpendicular to the first electrode collector layer, a plurality of second active material layers that electrically contact the second electrode collector layer and are substantially perpendicular to the second electrode collector layer, and a first conductor layer that electrically contacts the first electrode collector layer and is inserted into the plurality of first active material layers.

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To provide a solid-state battery that can improve layout by allowing a current collecting position to be optionally disposed and that can suppress the occurrence of short circuits. A solid-state battery includes a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode. A first electrode selected from one of the positive electrode and the negative electrode includes a material mixture filled portion including a metal porous body filled with an electrode material mixture. The solid electrolyte layer is disposed so as to cover a periphery of the material mixture filled portion. A second electrode selected from the other of the positive electrode and the negative electrode is disposed so as to cover the solid electrolyte layer.

An electrode structure for use in an energy storage device, the electrode structure comprising a population of electrodes, a population of counter-electrodes and an electrically insulating material layer separating members of the electrode population from members of the counter-electrode population, each member of the electrode population having a longitudinal axis A.sub.E that is surrounded by the electrically insulating separator layer.

The present application provides a layer-built tab, which includes a plurality of metal pieces and adhesives, the metal pieces being stacked and bonded by the adhesives. The metal pieces are stacked and spaced apart from each other, which increases the heat dissipation area of the tab while supporting a large current flow, the heat dissipation capability of the tab is improved. An electrode plate, a battery core, and a battery including the layer-built tab are also disclosed.

A manufacturing method of a secondary battery is provided to improve a manufacturing efficiency of a non-rectangular electrode. The manufacturing method is provided for a secondary battery and includes forming the non-rectangular electrode. The step of forming the electrode includes, prior to forming an electrode precursor by applying an electrode material layer raw material to a metal sheet material that becomes a current collector, controlling a wettability of a local portion of a surface of the metal sheet material to the electrode material layer raw material and forming a wettability control region in the local portion. The local portion becomes a cutaway region of the non-rectangular electrode.