Abstract: Disclosed are a packaging structure, a battery and an electronic device. The packaging structure includes a packaging film and a partition plate. The packaging film includes a first film housing, a second film housing and a connecting part between them. The connecting part is provided with a groove, and an opening of the groove faces the partition plate. The partition plate is provided in the groove. The partition plate separates the first film housing and the second film housing to form a first accommodating chamber for accommodating a first battery cell and form a second accommodating chamber for accommodating a second battery cell.

Abstract: The present disclosure provides a button cell and an electronic device. The button cell includes a case, a cell, a conductive member arranged on the case and connected to the case in an insulated manner, and a liquid injection port for injecting an electrolyte solution into an accommodating cavity. A cell is placed in an accommodating cavity of a bottom shell. A first tab is welded to an inner bottom wall of the bottom shell, and then the top cover having the conductive member is connected to the bottom shell in a sealed manner, with a second tab on the cell being electrically connected to the conductive member. Finally, an electrolyte solution is injected into the accommodating cavity. After the electrolyte solution is injected, a sealing member covers the liquid injection port, and the sealing member is connected to the liquid injection port in a sealed manner.

Abstract: An electrode plate of the battery includes an active material coating region and a tab, and the tab includes a foil uncoating region; and the foil uncoating region includes three outer sides, a second treating area is provided at an edge of at least one of the three outer sides, and a thickness of the second treating area is greater than or equal to a thickness of other areas, excluding the second treating area, of the foil uncoating region. The tab of the electrode plate has an increased strength, thereby eliminating a hidden factor of causing failure of a battery due to warping of a tab, and thus solving a problem of causing failure of a battery cell or affecting an electrochemical quality of a battery due to insufficient strength of a tab to fold or warp, and significantly improving an electrochemical quality and safety of a battery.

Abstract: Disclosed are a positive electrode material, a preparation method of a positive electrode material, a positive electrode plate, and a battery. The positive electrode material includes a sodium-containing oxide, an angle range of a first characteristic peak of the sodium-containing oxide is less than an angle range of a second characteristic peak, the first characteristic peak is a characteristic peak of the sodium-containing oxide at an initial voltage, the second characteristic peak is a characteristic peak of the sodium-containing oxide at a cut-off voltage, and a chemical formula of the sodium-containing oxide is LixNa1-xCo1-z MzO2. M includes a metal element or a non-metal element, 0.7<x<1, and 0.001<z<0.03.

Abstract: Disclosed are a positive electrode material, and a positive electrode plate and a battery including the positive electrode material. The positive electrode material provided by the present disclosure is good in structural stability, and a battery formed by the positive electrode material has excellent cycling performance. According to the positive electrode material provided by the present disclosure, through a type and a doping amount of a doped A element, on one hand, a morphology of the positive electrode material is directionally controlled, and a press density of the positive electrode material is improved, so that an energy density of a positive plate is improved; on the other hand, an oxygen stability in the positive electrode material is improved by an A-O bond formed by the doped element A and oxygen atoms in a crystal, so that the positive electrode material has relatively high gram volume and voltage platform.

Abstract: Disclosed is a battery, including: a housing having a cavity; a battery cell arranged in the cavity, the battery cell includes a positive electrode plate, a negative electrode plate, and a separator; and an electrolyte solution filled in the battery cell including fluoroethylene carbonate. A width of the separator is greater than that of the positive and the negative electrode plate. The battery satisfies following relationship: C?B/20A+1, where a content of fluoroethylene carbonate in the electrolyte solution is C %, A represents a distance between an edge of the separator and that of an electrode plate on the same side, and B represents a height of the cavity. When the foregoing relationship is satisfied, deterioration of performance of the battery cell caused by insufficient electrolyte solution may be alleviated, thereby improving a value of a self-discharge coefficient k and cycling performance of the battery.

Abstract: Disclosed are a battery electrolyte solution and a battery. The battery electrolyte solution includes an organic solvent, an additive, and an electrolyte salt, the organic solvent includes an ethyl group solvent, and the additive includes 1,3-propane sultone and a nitrile substance. The electrolyte solution is in contact with a positive electrode plate. Percentages of the ethyl group solvent, the 1,3-propane sultone, and the nitrile substance in a total mass of the electrolyte solution are configured as follows: 0.45?N3?A+B2+C2?516?N3. N denotes a peeling strength value of the positive electrode plate, in a unit of gf/mm, A, B, and C denotes a percentage of the mass of the ethyl group solvent, 1,3-propane sultone, and the nitrile substance in the total mass of the electrolyte solution.

Abstract: The present application provides a composite material and a preparation method thereof, and a lithium ion battery, and belongs to the technical field of lithium batteries. A specific solution is as follows: the composite material is an oxide electrolyte coated nano-attapulgite composite material, where a coating layer of an oxide electrolyte has a thickness less than or equal to 20 ?m, a rod crystal of a nano-attapulgite has a length of 100 nm-50 ?m and a width of 10 nm-120 nm, and the nano-attapulgite is an organically modified natural nano-attapulgite and/or a lithium cation exchanged natural nano-attapulgite. The attapulgite composite material coated with the oxide electrolyte has a rod-shaped fast lithium ion transmission channel at a nanometer level, which can improve a transmission of lithium ions and has good lithium ion conductivity and excellent mechanical properties.

Abstract: A battery cell includes: a first stacked cell and a second stacked cell that are stacked. The first stacked cell and the second stacked cell both include a plurality of first electrode plates and a plurality of second electrode plates that are alternately stacked, and on a plane parallel to the plurality of first electrode plates, a projection of the first stacked cell is within a range of a projection of the second stacked cell on the plane. The first stacked cell and the second stacked cell of different sizes are arranged in a stacked manner, so that the battery cell can be flexibly adapted to battery compartment structures of difference sizes, and a manufacturing process is simple and a mass production is easy to implement.

Abstract: Disclosed are a battery and an electronic device. The battery includes a film housing, a first cell, a second cell and a partition plate. The film housing is provided with an accommodating cavity, a first accommodating groove adapted for the first cell is formed on a side of the partition plate. The first cell is placed in the first accommodating groove, the second cell is placed on another side of the partition plate, the first accommodating groove and the second cell are disposed side by side in the accommodating cavity, and the first cell and the second cell are separated by the partition plate.

Abstract: Disclosed are an electrode plate and a battery. The electrode plate includes a current collector, a tab, and an adhesive paper; the tab is disposed in the tab welding region the electrode plate is divided into a plurality of planar regions and curved surface regions that are alternately disposed; the adhesive paper covers the tab welding region, partially covers a planar region, crosses over an adjacent curved surface region on one side, and partially covers an adjacent planar region; and a projection of the adhesive paper on the adjacent planar region has a dimension L1, and 0<L1?10 mm. The electrode plate in the present disclosure can solve a problem of poor flatness near a tab, and can solve a lithium deposition problem caused by the poor flatness near the tab.

Abstract: Disclosed are an electrode plate and a battery. An electrode plate provided in the present disclosure includes a first current collector and a first functional layer disposed on at least one side of the first current collector, where a plurality of first regions and a plurality of second regions are alternately distributed on a surface of the first functional layer. A content ratio of an element oxygen to an element silicon in the first functional layer within the first region is greater than 4:1. The present disclosure provides the electrode plate and the battery, to at least resolve a problem of low initial efficiency of a lithium-ion battery, and increase battery capacity, thereby improving battery energy density.

Abstract: A jelly roll includes a first electrode plate and a second electrode plate that are disposed in a stacked manner. The tail end of the first electrode plate is a first foil uncoating region; the tail end of the second electrode plate is a second foil uncoating region; and the jelly roll includes a first bending region disposed at an outermost side of the jelly roll, the tail end of the first electrode plate and the tail end of the second electrode plate are both located in the first bending region, and neither of projections, in a thickness direction of the jelly roll, of the first foil uncoating region and the second foil uncoating region exceeds the first bending region. The present disclosure solves problems of being unable to ensure both safety and an energy density of a battery.

Abstract: Disclosed are a positive electrode material, and a positive electrode plate and a battery including the positive electrode material. The positive electrode material has a special phase structure distinct from that of a conventional lithium cobalt oxide material. The positive electrode material may present a plurality of small charging and discharging platforms in a charging and discharging process. Compared with a conventional high-voltage lithium cobalt oxide material, the positive electrode material exhibits the following advantage in terms of electrochemical performance: under a condition that a charge-discharge cut-off voltage and a charge and discharge rate remain the same, the positive electrode material has higher gram capacity performance and cycling performance. Specifically, compared with an undoped compound that belongs to a P63mc space group and has an O2 phase packed structure, the compound has higher gram capacity and better cycling performance due to an effect of element potassium.

Abstract: A battery includes a first half housing, a second half housing and an arc-shaped battery cell. The first half housing and the second half housing are connected to enclose and form an arc-shaped accommodating cavity that matches the arc-shaped battery cell, and the arc-shaped battery cell is accommodated in the arc-shaped accommodating cavity. Disposal of the arc-shaped accommodating cavity enables a structure of an aluminum laminated film housing to match a structure of an arc-shaped battery cell, so as to facilitate an operation of encapsulating the arc-shaped battery cell in the aluminum laminated film housing, and to improve an effect of fixing the arc-shaped battery cell in the aluminum laminated film housing, thereby reducing a probability of the arc-shaped battery cell moving relative to the aluminum laminated film housing, and thus achieving an technical effect of improving a safety of an arc-shaped battery.

Abstract: Disclosed are a separator and a battery including the same. An adhesive layer of the separator includes a composite material with a fibrous core-shell structure. In the composite material with a fibrous core-shell structure, the nitrogen-containing phosphate compound is encapsulated in a vinylidene fluoride polymer. When the battery is used at room temperature, the encapsulation structure is stable, the nitrogen-containing phosphate compound is encapsulated in the vinylidene fluoride polymer and stably exists in the separator, without affecting the electrical performance of the battery. In addition, the fibrous vinylidene fluoride polymer can perform excellent at bonding, and tightly bonds the separator to the positive electrode plate and negative electrode plate together, ensuring that the battery does not deform during the cycle. The battery can effectively improve the safety performance while taking into account performance of the battery at high and low temperatures.

Abstract: A battery includes a battery cell and a packaging body, an edge of at least one side of the packaging body is provided with a sealing region to seal and wrap the battery cell body in the packaging body, and the packaging body includes a heat sealing layer; and in the sealing region, a side, away from the battery cell body, of the heat sealing layer is an outer sealing side, a side, close to the battery cell body, of the heat sealing layer is an inner sealing side, and a crystallinity of the outer sealing side is greater than a crystallinity of the inner sealing side. The battery includes the packaging body with a high packaging strength and a strong resistance to bending, which may more effectively block water vapor from entering a battery, and also improves safety performance and a service life of a battery.

Abstract: Disclosed are a battery separator and a battery. The battery separator includes a substrate, a first coating layer and a second coating layer, and the first coating layer and the second coating layer are arranged opposite to one another on two sides of the substrate; the first coating layer includes first polymer particles and inorganic particles; and the second coating layer includes second polymer particles; Dv10 of the first polymer particles is denoted as A, and Dv50 of the first polymer particles is denoted as B; Dv90 of the inorganic particles is denoted as C; and 0.2?A/C?5; and 1?B/C?40. The battery separator of the present disclosure adheres well to an electrode plate in a battery cell, giving the battery cell excellent low-temperature dynamic performance. Meanwhile, the battery containing the battery has excellent safety performance and cycling performance.

Abstract: A battery cell includes a battery cell body and a packaging body having a sealing strip that surrounds the battery cell body. The sealing strip is sequentially formed with a first edge, a middle line and a second edge; and a peel force of the sealing strip at the first edge is greater than a peel force of the sealing strip at the middle line. When the battery cell body has a tendency to rupture the sealing strip and subsequently detach from the packaging body, even if first line of protection at a side, close to the battery cell body, of the sealing strip is ruptured, a sealing is also reinforced at the first edge on a side, away from the battery cell body, of the sealing strip, which constructs second line of protection on the sealing strip, thereby solving a problem of safety risks caused by insufficient packaging strength.

Abstract: Disclosed are a battery electrolyte solution and a battery. The battery electrolyte solution includes an organic solvent, an additive, and an electrolyte salt, and the electrolyte solution is in contact with a negative electrode plate; the organic solvent includes an ethyl group solvent, the additive includes fluoroethylene carbonate, the electrolyte salt includes a lithium salt, and percentages of the ethyl group solvent, the fluoroethylene carbonate, and the lithium salt in a total mass of the electrolyte solution are configured as follows: 0.4?N3?A+B2+C2?5.2?N3, where N denotes a peeling strength value of the negative electrode plate, A, B, and C respectively denote a percentage of the mass of the ethyl group solvent, the fluoroethylene carbonate and the lithium salt in the total mass of the electrolyte solution.