Abstract: A battery, including a battery cell and a housing assembly accommodating the battery cell. The battery cell includes a first tab. The housing assembly includes a first housing body and a second housing body. The first housing body and the second housing body define an accommodation space to accommodate the battery cell. The first housing body and/or the second housing body include an installation portion provided with a via hole. A conductive member is disposed on an inner surface or an outer surface of the housing assembly and electrically connected to the first tab. In a through direction of the via hole, a projection of the conductive member is at least partially located in the via hole. The conductive member can avoid occupying internal space of the housing assembly, and increase the energy density of the battery. An electric device containing the battery is provided.

Abstract: A battery includes a housing, a cover, a sealing member, a connecting member, a cell, and a pole. The pole includes a substrate and a lead-out portion disposed on the substrate, where the lead-out portion includes a first portion, a second portion, and a mounting hole. The second portion is connected to an end of the first portion away from the substrate. The mounting hole is connected to the first portion and the second portion, where an opening of the mounting hole is located in the second portion. In a direction parallel to the substrate, minimum cross-sectional area of the first portion is greater than maximum cross-sectional area of the second portion. The pole has the first portion and the second portion of different cross-sectional areas disposed on the lead-out portion so that the second portion can be more easily riveted and bent against the first portion during riveting.

Abstract: An electrode assembly, including a positive electrode plate, a negative electrode plate, a separator, a positive electrode tab. The positive electrode plate includes a positive electrode current collector and a positive electrode active substance layer, the negative electrode plate includes a negative electrode current collector and a negative electrode active substance layer disposed on surface of the negative electrode current collector. The positive electrode active substance layer is provided with a first groove. The negative electrode active substance layer is provided with a second groove, the second groove is corresponding to the first groove, the second groove extends along a thickness direction of the electrode assembly to the negative electrode current collector. The second groove is provided with a first protective adhesive inside, so as to ensure thickness consistency between the groove and a body zone of the electrode plate and reducing the risk of short circuit.

Abstract: A battery includes a battery core and a packaging shell. The battery core includes a first side face and a second side face that intersect with the first side face, and the packaging shell includes a body enclosing the battery core and a side seal located on a side of the first side face. The side seal includes: a first folded edge including a first portion and a second portion, wherein the first portion extends along the second side face in a first direction away from the body. The second portion extends from the second end in a second direction toward the body, and a second folded edge extending from the fourth end along the first side face.

Abstract: A battery, including a battery cell and a housing assembly accommodating the battery cell. The battery cell includes a first tab. The housing assembly includes a first housing body and a second housing body. The first housing body and the second housing body define an accommodation space to accommodate the battery cell. The first housing body and/or the second housing body include an installation portion provided with a via hole. A conductive member is disposed on an inner surface or an outer surface of the housing assembly and electrically connected to the first tab. In a through direction of the via hole, a projection of the conductive member is at least partially located in the via hole. The conductive member can avoid occupying internal space of the housing assembly, and increase the energy density of the battery. An electric device containing the battery is provided.

Abstract: The present application discloses a cell and a battery, the cell comprising a first electrode, a second electrode, and a first separator and a second separator that are disposed between the first electrode and second electrode, wherein the first separator includes a first meshing structure beyond the first electrode and the second electrode, the second separator includes a second meshing structure beyond the first electrode and the second electrode, and the first meshing structure is meshed with the second meshing structure along a thickness direction of the cell. The cell provided by the present application can improve the dropping performance of the cell and enhance the safe use of cell.

Abstract: The present application is concerned with a battery, including a battery cell. The battery further includes: a first housing body housing the battery cell and including a first surface and a second surface that are opposite to each other, wherein the second surface is located between the battery cell and the first surface, and the first housing body is provided with a via hole that penetrates through the first surface and the second surface; and an electrode post fixed in the via hole by a binder and electrically connected to the battery cell. Space utilization efficiency and an energy density of the battery according to this application are relatively high. This application further provides an electric device including the battery.

Abstract: The invention provides an electrode piece, a cell and an energy storage device. The electrode piece is used to form the cell, comprising: a current collector; a diaphragm; and a groove. Among them, the current collector exposed at the bottom of the groove is a blank current collector, and the blank current collector is formed with a connecting portion; the connecting portion is cut out from the blank current collector as a part of the blank current collector and bent on the blank current collector along the width direction; and at least a portion of the connecting portion extends beyond the outer edge of the current collector in the width direction. The electrode piece of the invention can increase the energy density of the cell and the connection strength of the blank current collector of the electrode tab and the electrode piece, and reduce the production cost.

Abstract: A cell and a battery are provided. The cell includes an electrode assembly and a packaging bag, the electrode assembly includes a first electrode sheet provided with a first coating layer and a first uncoated region, the packaging bag includes a first body, the electrode assembly is disposed in the packaging bag, and the first uncoated region is electrically connected with the first body. Further, the electrode assembly may further include a second electrode sheet provided with a second coating layer and a second uncoated region, the packaging bag may further include a second body, and the second uncoated region is electrically connected with the second body.

Abstract: The present application provides a package sealing structure, a preparation method thereof and a flexible packaging battery. In a package peripheral region of the package sealing structure, the insulating heat sealing layers of the two layers of packaging film face each other and are melted into one body to form an insulating fusion layer which seals and bonds the two layers of the packaging film together. The insulating fusion layer is formed with an overflow portion that overflows from the package peripheral region of the package sealing structure to the outer end surfaces of the core metal layers of the two layers of packaging film and covers completely the outer end surfaces of the core metal layer of the two layers of packaging film, so that the outer end surfaces of the core metal layers are insulated from the peripheral environment.

Abstract: The present application discloses a cell and a battery, the cell comprising a first electrode, a second electrode, and a first separator and a second separator that are disposed between the first electrode and second electrode, wherein the first separator includes a first meshing structure beyond the first electrode and the second electrode, the second separator includes a second meshing structure beyond the first electrode and the second electrode, and the first meshing structure is meshed with the second meshing structure along a thickness direction of the cell. The cell provided by the present application can improve the dropping performance of the cell and enhance the safe use of cell.

Abstract: A cell and a battery are provided. The cell includes an electrode assembly and a packaging bag, the electrode assembly includes a first electrode sheet provided with a first coating layer and a first uncoated region, the packaging bag includes a first body, the electrode assembly is disposed in the packaging bag, and the first uncoated region is electrically connected with the first body. Further, the electrode assembly may further include a second electrode sheet provided with a second coating layer and a second uncoated region, the packaging bag may further include a second body, and the second uncoated region is electrically connected with the second body.

Abstract: The present application provides a package sealing structure, a preparation method thereof and a flexible packaging battery. In a package peripheral region of the package sealing structure, the insulating heat sealing layers of the two layers of packaging film face each other and are melted into one body to form an insulating fusion layer which seals and bonds the two layers of the packaging film together. The insulating fusion layer is formed with an overflow portion that overflows from the package peripheral region of the package sealing structure to the outer end surfaces of the core metal layers of the two layers of packaging film and covers completely the outer end surfaces of the core metal layer of the two layers of packaging film, so that the outer end surfaces of the core metal layers are insulated from the peripheral environment.

Abstract: The invention provides an electrode piece, a cell and an energy storage device. The electrode piece is used to form the cell, comprising: a current collector; a diaphragm; and a groove. Among them, the current collector exposed at the bottom of the groove is a blank current collector, and the blank current collector is formed with a connecting portion; the connecting portion is cut out from the blank current collector as a part of the blank current collector and bent on the blank current collector along the width direction; and at least a portion of the connecting portion extends beyond the outer edge of the current collector in the width direction. The electrode piece of the invention can increase the energy density of the cell and the connection strength of the blank current collector of the electrode tab and the electrode piece, and reduce the production cost.