A wound battery which relates to the field of batteries. The wound battery is formed by winding a battery sheet. The battery sheet is flexible and includes a flexible current collector, a positive active layer, a negative active layer, and an insulating separator which is formed on a surface of the positive active layer and/or a surface of the negative active layer, and is configured to prevent the positive active layer from directly contacting the negative active layer.

The invention relates to battery modules, battery devices and to methods for producing a battery module.

An electrochemical cell includes a winding comprising a ribbon-shaped negative electrode with an anode current collector and a ribbon-shaped positive electrode with a cathode current collector. An assembly comprises the negative electrode and the positive electrode, the assembly is wound spirally around a winding axis to form the winding, the winding comprises a central cavity, two terminal end faces, and a circumferential winding shell. The electrochemical cell further includes a contact sheet metal member in direct contact with a protruding longitudinal edge of the anode current collector or the cathode current collector. In addition, the electrochemical cell includes a housing, a sensor apparatus configured detect changes in a state of the winding, and a display and/or a contact configured to display measured values and/or via which the measured values can be transmitted.

A lithium battery includes a wound core and tabs, in which the wound core is formed by stacking and winding an inner separator, a first electrode sheet, an outer separator, and a second electrode sheet; the inner separator is located at the innermost layer of the wound core, and each of the inner separator and the outer separator has a clamping section, a first straight section, and a tail laminating section, where the first straight section is located in front of the first electrode sheet, and the clamping section, the first straight section and the tail laminating section of the inner separator are respectively laminated with the clamping section, the first straight section and the tail laminating section of the outer separator; and a dry peeling force of each of the first straight sections of the inner separator and the outer separator is less than 8 N/m.

An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis, where each of the electrodes in the stack is separated along the stacking axis from a successive one of the electrodes in the stack by a respective separator portion positioned therebetween. At least one outer surface of the stack may include a pattern defining a first region and a second region, where a second portion of the stack corresponding to the second region has a different property or height from a first portion of the stack corresponding to the first region. The property may include any one of shading or color of the at least one outer surface of the stack, air permeability of the separator portions in the first and second regions, and adhesive force between the electrodes and separator portions in the first and second regions.

An electronic device is provided. The electronic device includes a frame, a first partition wall protruding from the frame in a first direction and dividing the frame into a first area and a second area, a second partition wall portion protruding from the frame in the first direction and dividing the frame into a second area and a third area, a first printed circuit board disposed in the first area, a battery disposed in the second area, a second printed circuit board disposed in the third area, and a display circuit including at least two flexible printed circuit boards. The flexible printed circuit boards include an overlapping area in which at least some areas overlap, the overlapping area being disposed in the second area, and, in the frame, an opening is formed in a portion facing the overlapping area.

In an embodiment, a battery includes a container, a lid member, an electrode group, an electrode terminal and an electrode group retainer. The lid member is attached to a peripheral wall of the container with an opening of an inner cavity being closed. The electrode terminal is electrically connected to the current collecting tab. The electrode group retainer is arranged between the electrode group and the lid member. A proximity plate portion of the electrode group retainer is close to the electrode group from a side where the lid member is located and forms a space between the lid member and thereof. A facing surface of the proximity plate portion is formed to have a shape that is along an outer surface of an end portion of the electrode group on a side where the lid member is located.

A flexible battery and a display device are provided. The flexible battery includes: a plurality of flexible electric core blocks; wherein the plurality of flexible electric core blocks are arranged at intervals along a curling traveling direction, a spacing between adjacent flexible electric core blocks is gradually increased along the curling traveling direction; at least one flexible connecting bridge is arranged between the adjacent flexible electric core blocks, and two ends of the flexible connecting bridge are electrically connected with the adjacent flexible electric core blocks respectively.

A secondary battery includes an electrode assembly disposed within a constraint. The electrode assembly comprises a population of unit cells comprising an electrode current collector layer, an electrode layer, a separator layer, a counter-electrode layer, and a counter-electrode current collector layer in stacked succession. A subset of the unit cell population includes extended spacer members between the electrode current collector layer and the counter-electrode current collector layer. One of the spacer members is spaced in a transverse direction from the other extended spacer member, at least a portion of the counter-electrode active material of the counter-electrode layer being located between the spacer members such that the portion of the counter-electrode active material and the spacer members lie in a common plane defined by x and z axes, wherein each of the extended spacer members extend a distance SD in the x-axis direction beyond an x-axis edge of the constraint.

Provided is a rectangular secondary battery with improved rigidity against vibrations and impacts. A rectangular secondary battery of the present invention includes: a flat-shaped electrode group; a current-collecting plate electrically connected to the electrode group; a battery case accommodating the current-collecting plate and the electrode group; a battery cover that closes an opening of the battery case; an electrode terminal penetrating through the battery cover, the electrode terminal being connected to the current-collecting plate via a connecting member; and a gasket that is inserted between the electrode terminal and the battery cover for insulating and sealing. An insulator is disposed between the current-collecting plate and the battery cover, the battery cover includes a battery cover side fixing part that fixes the insulator, and the insulator includes a current-collecting plate side fixing part that fixes the current-collecting plate.