An electrochemical cell comprising a cathode and an anode residing within a casing, the anode being positioned distal of the cathode. The cathode having a cathode current collector having an angled configuration that encourages the cathode active material to move in an axial distal direction during cell discharge. The cathode current collector may be configured having at least one fold thereby dividing the current collector into at least two portions having an angle therebetween. The cathode current collector may comprise a wire having a helical configuration or the cathode current collector may comprise a post with a thread having a helical orientation about the post exterior. A preferred chemistry is a lithium/CF.sub.x activated with a nonaqueous electrolyte.

A film covered battery has a battery element equipped with a plurality of electrode plates laminated via separators, and an exterior film for hermetically sealing the battery element. A cover film is attached to a hollow present in predetermined regions set on a surface of the exterior film. The predetermined regions are regions obtained by removing overlap regions from projected regions obtained by projecting the electrode plates to the surface of the exterior film, the overlap regions being regions where the projected regions overlap with members interposed between the electrode plates at the outermost layers and the exterior film. It is possible to cover the hollow on the surface, without increasing the thickness of the film covered battery.

A metal-air battery cell includes an electrode assembly and a sealed pouch. The electrode assembly includes an air electrode, a negative electrode, a separator in contact with and disposed between the electrodes, and a hydrophobic gas diffusion layer in contact with a side of the air electrode opposite the separator. The pouch envelops the electrode assembly and contains an electrolyte therein. The pouch is defined by a gas permeable hydrophobic flexible layer in contact with the hydrophobic gas diffusion layer, and a gas and liquid impermeable flexible layer in contact with the negative electrode. The electrode assembly further includes a terminal extending from and away at least one of the electrodes, and through the pouch. The layers of the pouch are sealed to each other and around the terminal.

An electrochemical cell has a prismatic cell housing and an electrode assembly disposed in the cell housing. The cell housing is six-sided and includes a first end, a second end, and a sidewall that extends between the first and second ends. The sidewall includes a pair of major sides joined by a pair of minor sides, where each side of the pair of major sides is larger in area than each side of the pair of minor sides. The electrode assembly includes positive electrode plates alternating with negative electrode plates and separated by at least one separator to form an electrode stack. The electrode stack is oriented within the cell housing such that a stack axis that extends parallel to a stacking direction of the positive and negative electrode plates is normal to, and passes through, each side of the pair of minor sides.

An apparatus includes a battery stack including a plurality of alternating anodes and cathodes, wherein each of the anodes is positioned between first and second separators, and wherein a tab of the anode extends out from between the first and second separators, and an edge tape extending across a top of the first and second separators.

Provided is a secondary battery, which can prevent a protective circuit board and an electrode terminal from colliding with each other by providing a gasket including a support unit protruding from a top surface of a cap plate to be higher than the electrode terminal. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, an electrode terminal electrically connected to the electrode assembly and upwardly protruding through a terminal throughhole of the cap plate, and a gasket interposed between the cap plate and the electrode terminal and electrically insulating the cap plate and the electrode terminal from each other. The gasket includes a support unit protruding from the cap plate to be higher than the electrode terminal.

The invention relates to a battery cell, in particular a lithium-ion battery cell, wherein compared to conventional battery cells, a number of components can be reduced. The battery cell has at least one winding element, two current collectors each electrically connected to one of the electrodes of the winding element, and a metal housing. In order to be able to establish an electrical contact between one of the electrodes of the winding element and the housing, one of the current collectors is specifically configured and arranged such that said current collector is in direct mechanical and electrically conductive contact with the housing. To this end, said housing contact current collector (29) can be provided with a suitably wide plate-shaped area (35), which in edge regions (37) that are bent away at a right angle can rest against an interior wall of the housing of the battery cell in a planar manner, and can establish an electrical contact therewith.

A terminal covering resin film for secondary cell, which is attached so as to cover part of an outer surface of a terminal connected to a power generation element of a secondary cell, comprises an innermost layer contacting the terminal, and an outermost layer forming a surface opposite to the innermost layer wherein the innermost layer is a layer of not less than 20 μm in thickness containing an acid-modified polyolefin and a melt flow rate of the innermost layer is not less than 2.0 g/10 minutes.

The present invention relates to a battery module for storage of electrochemical cells, including a cover assembly including an inner frame that encloses an end of the cells and applies a compressive force thereto, an intermediate frame that is snap fit to an outer surface of the inner frame and supports ancillary structures of the battery system, and an outer cover that is snap fit to an outer surface of the intermediate frame.

A battery pack includes a pack body that includes a battery cell and that has an external shape substantially symmetric with respect to the horizontal and vertical axes, viewed from a front face on which terminals are arranged, and a terminal unit on the front face. The terminal unit includes a positive terminal, a negative terminal, a control terminal, and a temperature detection terminal for outputting temperature data. The positive terminal and the negative terminal are arranged on one side with respect to a center line in the width direction of the pack body. The control terminal is arranged symmetrically to the temperature detection terminal with respect to the center line in the width direction of the pack body.