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: In one aspect, the present application provides a multilayer sheet including a metal layer, a bonding layer arranged on a first surface of the metal layer, and a buffer layer arranged on a second surface of the metal layer, wherein the buffer layer is provided with a hole. The present application further provides a battery including an electrode assembly, and a packaging bag prepared from the multilayer sheet. Wherein the packaging bag packages the electrode assembly. It is an object of the present application to provide a multilayer sheet and battery capable of reducing vibration damage.

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 second battery cell comprising first and second electrodes, first and second tabs, and a separator. The first electrode and second electrode include first and second current collectors and first and second active material layers respectively. The first and second electrodes are formed with first and second tab accommodating grooves for accommodating the first and second tabs respectively. The first tabs are arranged in pairs, and two first tabs in each pair are respectively located on the upper and lower sides of the first winding starting section of the first electrode along the thickness direction of the secondary battery cell; and/or the second tabs are arranged in pairs, and two second tabs in each pair are respectively located on the upper and lower sides of the second winding starting section of the second electrode along the thickness direction of the secondary battery cell.

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: Disclosed is an automatic isobaric dispensing machine for craft beer and a beer dispensing method by using the same. The automatic isobaric dispensing machine for craft beer comprises a housing; a beer dispensing head installed on the housing and hermetically placed at a container mouth of a container; a carbon dioxide supplying device connecting with a gas inlet of the beer dispensing head through a pre-pressure gas valve, a beer barrel connected with a beer inlet of the beer dispensing head through a beer outlet valve, a flowmeter for measuring a beer flow of the beer barrel, and a processor connected with the pre-pressure gas valve, the beer outlet valve, the flowmeter, the gas exhaust valve and the barometer. The isobaric dispensing machine has a simple machine structure and is convenient to use, and is capable of reducing the time cost and the beer waste thus providing better beer quality.

Abstract: The present application relates to the field of energy storage devices and, in particular, relates to a battery electrode, and a secondary battery using the battery electrode. The battery electrode comprises an electrode tab, a current collector, and a diaphragm attached onto at least one surface of the current collector, wherein the diaphragm is provided with a groove, the electrode tab is embedded into the groove and is electrically connected with the current collector, the electrode tab comprises an embedded portion embedded in the groove and an exposed portion protruded outside the groove; wherein an upper surface of the embedded portion is covered with an active material coating layer. According to the present application, an embedded electrode tab is adopted, and a diaphragm covers a surface of an embedded portion.

Abstract: In one aspect, the present application provides a multilayer sheet including a metal layer, a bonding layer arranged on a first surface of the metal layer, and a buffer layer arranged on a second surface of the metal layer, wherein the buffer layer is provided with a hole. The present application further provides a battery including an electrode assembly, and a packaging bag prepared from the multilayer sheet. Wherein the packaging bag packages the electrode assembly. It is an object of the present application to provide a multilayer sheet and battery capable of reducing vibration damage.

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: Embodiments of the present application provide a protective device for cell including a first conductive component and a second conductive component that are disposed oppositely and spaced apart. A switching unit disposed between the first conductive component and the second conductive component is configured to disconnect the first conductive component from the second conductive component based on a predetermined temperature of the cell. The purpose of the present application is to provide a protection device for cell to timely cut off the internal circuit of the cell when the internal temperature of the cell is high.

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 second battery cell comprising first and second electrodes, first and second tabs, and a separator. The first electrode and second electrode include first and second current collectors and first and second active material layers respectively. The first and second electrodes are formed with first and second tab accommodating grooves for accommodating the first and second tabs respectively. The first tabs are arranged in pairs, and two first tabs in each pair are respectively located on the upper and lower sides of the first winding starting section of the first electrode along the thickness direction of the secondary battery cell; and/or the second tabs are arranged in pairs, and two second tabs in each pair are respectively located on the upper and lower sides of the second winding starting section of the second electrode along the thickness direction of the secondary battery cell.

Abstract: The present disclosure provides a wound-type electrode assembly comprising a first and second electrode plates, a first and second electrode tabs, and a separator. The first and second electrode plates include a first current collector and active substance layer, and a second current collector and active substance layer. Two surfaces of the first current collector of the first winding start section of the first electrode plate are not coated with first active substance layer and defined as a first start blank current collector, the first start blank current collector is welded to a first electrode tab. The second pole piece comprises a second groove, a bottom of which is a second current collector and a circumference thereof is a second active substance layer; the second electrode tab is accommodated in the second groove and electrically connected to the second current collector at the second groove.

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.

Abstract: The present application relates to the field of energy storage devices and, in particular, relates to a battery electrode, and a secondary battery using the battery electrode. The battery electrode comprises an electrode tab, a current collector, and a diaphragm attached onto at least one surface of the current collector, wherein the diaphragm is provided with a groove, the electrode tab is embedded into the groove and is electrically connected with the current collector, the electrode tab comprises an embedded portion embedded in the groove and an exposed portion protruded outside the groove; wherein an upper surface of the embedded portion is covered with an active material coating layer. According to the present application, an embedded electrode tab is adopted, and a diaphragm covers a surface of an embedded portion.

Abstract: The present application provides a lithium-ion battery, which comprises: a wound-type cell formed by winding a positive electrode plate, a separator and a negative electrode plate, a width of the separator is greater than widths of the positive electrode plate and the negative electrode plate; an electrolyte; and a packaging film packaging the wound-type cell and accommodating the electrolyte; a wound ending of the wound-type cell is adhered with a single-sided adhesive layer, an adhesive of the single-sided adhesive layer is a flowable curing adhesive, the wound-type cell and the packaging film are adhered together by the curing adhesive which flows and flows out from a periphery of the single-sided adhesive layer. The single-sided adhesive layer can prevent the wound-type cell from loosening or deforming, rupturing of the positive electrode tab and the negative electrode tab and bursting open of a top-seal in the process of dropping or tumbling.

Abstract: The present invention provides a secondary battery cell and winding formation system thereof. The secondary battery cell comprises an anode electrode plate, an anode electrode tab, a cathode electrode plate, a cathode electrode tab and a separator.

Abstract: The present application relates to the field of energy storage devices and, in particular, relates to a battery electrode, and a secondary battery using the battery electrode. The battery electrode comprises an electrode tab, a current collector, and a diaphragm attached onto at least one surface of the current collector, wherein the diaphragm is provided with a groove, the electrode tab is embedded into the groove and is electrically connected with the current collector, the electrode tab comprises an embedded portion embedded in the groove and an exposed portion protruded outside the groove; wherein an upper surface of the embedded portion is covered with an active material coating layer. According to the present application, an embedded electrode tab is adopted, and a diaphragm covers a surface of an embedded portion.

Abstract: The present application relates to the field of Li-ion batteries and, specifically, relates to a packaging housing for a Li-ion battery, a method for preparing the packaging housing for a Li-ion battery. A bare cell of the Li-ion battery is packaged by the packaging housing, the packaging housing comprises, successively from inside to outside, a sealing housing layer, a metal coating layer and a plastic coating layer; after the sealing housing layer packages the bare cell and then is sealed, the metal coating layer and the plastic coating layer are successively provided on an external surface of the sealing housing layer. Since each layer of the materials of the packaging housing is processed onto the external surface of the product during preparing or packaging process, the thickness and strength of folding edges and folding corners thereof are kept unchanged, packaging defects caused by the impact molding process are avoided.