A method for manufacturing a spiral-wound battery is provided. The method includes the following steps: performing surface plasma treatment on a current collector; coating electrode slurry on a surface of the current collector, to form an electrode foil; performing surface plasma treatment on an isolating film, to improve hydrophilia of the isolating film; arranging and electrically connecting a plurality of metal conductive handles to the electrode foil, where the electrode foil is divided into a plurality of sections, and each section of the electrode foil corresponds to a jelly roll; and sequentially winding the isolating film and the electrode foil to form the spiral-wound battery. According to the method for manufacturing a spiral-wound battery provided in the present disclosure, internal impedance of a jelly roll is effectively reduced, and advantages of a high yield and low costs of a manufacturing process of the spiral-wound battery are maintained.

A method for manufacturing a spiral-wound battery is provided. The method includes the following steps: performing surface plasma treatment on a current collector; coating electrode slurry on a surface of the current collector, to form an electrode foil; performing surface plasma treatment on an isolating film, to improve hydrophilia of the isolating film; arranging and electrically connecting a plurality of metal conductive handles to the electrode foil, where the electrode foil is divided into a plurality of sections, and each section of the electrode foil corresponds to a jelly roll; and sequentially winding the isolating film and the electrode foil to form the spiral-wound battery. According to the method for manufacturing a spiral-wound battery provided in the present disclosure, internal impedance of a jelly roll is effectively reduced, and advantages of a high yield and low costs of a manufacturing process of the spiral-wound battery are maintained.

An energy storage device includes: a first electrode assembly formed by winding a first plate; and a second electrode assembly formed by winding a second plate, in which the first electrode assembly includes a first positive electrode tab and a first negative electrode tab protruding from a part of a first electrode assembly body portion, the second electrode assembly includes a second positive electrode tab and a second negative electrode tab protruding from a part of a second electrode assembly body portion, the first electrode assembly body portion includes a first plate terminal end portion at a position facing the second electrode assembly body portion, the second electrode assembly body portion includes a second plate terminal end portion at a position facing the first electrode assembly body portion, and the first plate terminal end portion and the second plate terminal end portion are disposed at positions which do not overlap each other as viewed in an arrangement direction of the first electrode assembly and the second electrode assembly.

Electrochemical cells are provided. An example electrochemical cell may include a container, an electrolyte; an anode; a cathode; a current collector, and a separator disposed between the anode and the cathode. In some embodiments, the anode and the cathode may define an interfacial area y and the separator defines a thickness x, wherein a relation between the interfacial area y and the separator thickness x is defined between 26.532x.sup.?0.15?y?284.5x.sup.?0.675.

A film structure for a battery for dispensing on a round body includes a carrier film having a first section and a subsequent second section and a first electrode layer for forming an anode or a cathode, and a second electrode layer for forming an anode, if the first electrode layer is formed as a cathode, or a cathode, if the first electrode layer is formed as an anode. The first and second electrode layers are arranged on a top side of the first section and the second section of the carrier film. While the underside of the second section of the carrier film is coated with an adhesive layer, the underside of the first section of the carrier film is free of adhesive. As a result, the first section of the carrier film can be folded over onto the second section of the carrier film during labeling and the battery can be thereby activated.

A film structure for a battery for dispensing on a round body includes a carrier film having a first section and a subsequent second section and a first electrode layer for forming an anode or a cathode, and a second electrode layer for forming an anode, if the first electrode layer is formed as a cathode, or a cathode, if the first electrode layer is formed as an anode. The first and second electrode layers are arranged on a top side of the first section and the second section of the carrier film. While the underside of the second section of the carrier film is coated with an adhesive layer, the underside of the first section of the carrier film is free of adhesive. As a result, the first section of the carrier film can be folded over onto the second section of the carrier film during labeling and the battery can be thereby activated.

A film structure for a battery for providing on a round body includes a carrier film, having a first section and a second section following the first section and a third section following the second section. The film structure has a first layer sequence of several layers, having a first electrode layer for forming an anode or a cathode, and a second layer sequence of several layers, having a second electrode layer for forming an anode or cathode different from the first electrode layer. The first and the second layer sequences are arranged on different sections of the carrier film in such a way that the first and the second layer sequences come in contact with each other and the film battery is thereby activated only once a body is labeled.

A film structure for a battery for providing on a round body includes a carrier film, having a first section and a second section following the first section and a third section following the second section. The film structure has a first layer sequence of several layers, having a first electrode layer for forming an anode or a cathode, and a second layer sequence of several layers, having a second electrode layer for forming an anode or cathode different from the first electrode layer. The first and the second layer sequences are arranged on different sections of the carrier film in such a way that the first and the second layer sequences come in contact with each other and the film battery is thereby activated only once a body is labeled.

A thermal battery includes a first conductive layer containing an anode material separated from a second conductive layer containing a cathode material by a separator layer containing a separator material; and a flexible pyrotechnic heat source, wherein the first conductive layer, the separator layer, and the second conductive layer are rolled together to form the spiral wound configuration. A method of manufacturing a thermal spiral wound battery includes preparing three slurries, each containing one of an anode material, a cathode material, and a separator material, depositing each of the materials from the slurries onto conductive substrates to form three layers, stacking the layers, and winding the layers together into a spiral wound configuration.

A thermal battery includes a first conductive layer containing an anode material separated from a second conductive layer containing a cathode material by a separator layer containing a separator material; and a flexible pyrotechnic heat source, wherein the first conductive layer, the separator layer, and the second conductive layer are rolled together to form the spiral wound configuration. A method of manufacturing a thermal spiral wound battery includes preparing three slurries, each containing one of an anode material, a cathode material, and a separator material, depositing each of the materials from the slurries onto conductive substrates to form three layers, stacking the layers, and winding the layers together into a spiral wound configuration.