Abstract: A negative electrode includes a negative current collector, a first negative active material layer and a second negative active material layer. The first negative active material layer is arranged on one side of a first portion of the negative current collector, and the second negative active material layers are arranged on two sides of a second portion, different from the first portion, of the negative current collector. A ratio of a weight per unit area of the first negative active material layer to a weight per unit area of the second negative active material layer on the negative current collector is 0.47 to 0.52, and a ratio of a compacted density of the first negative active material layer to a compacted density of the second negative active material layer is 0.9 to 1.1.

Abstract: A negative electrode includes silicon-based particles and graphite particles, where a quantity of graphite particles present within a vertical distance of about 0 to 6 ?m to respective edges of the silicon-based particles is N, and based on a total quantity of the silicon-based particles, more than about 50% of the silicon-based particles satisfy: 6?N?17. The negative electrode has good cycle performance, and a battery prepared by using the negative electrode has good rate performance and a low deformation rate.

Abstract: An anode active material provided by the present application includes anode active particles having silicon element, a first conductive material and a second conductive material, wherein the first conductive material and the second conductive material form a three-dimensional conductive network structure, at least a portion of the anode active particles are accommodated in the three-dimensional conductive network structure, and a ratio of the total surface area of the first conductive material to the total surface area of the anode active particles is less than 1000.

Abstract: An anode material includes a silicon compound SiOx, where x is about 0.5 to 1.5; an oxide MeOy layer, the MeOy layer coating the silicon compound SiOx, where y is about 0.5 to 3; and a carbon layer, the carbon layer coating the MeOy layer. Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co, and Zr. The surface of the MeOy layer adjacent to the carbon layer has an open pore structure, and at least part of the open pore structure is filled with the carbon layer. The anode material improves the cycle performance of the electrochemical device and significantly reduce the impedance of the electrochemical device.

Abstract: The present application relates to an anode active material and a preparation method thereof, and a device using the anode active material. The anode active material provided by the present application includes anode active particles having silicon element, a first conductive material and a second conductive material, wherein the first conductive material and the second conductive material form a three-dimensional conductive network structure, at least a portion of the anode active particles are accommodated in the three-dimensional conductive network structure, and a ratio of the total surface area of the first conductive material to the total surface area of the anode active particles is less than 1000. The capacity retention rate and expansion ratio of the anode active material with progression of the cycle are significantly improved.

Abstract: The present application relates to an anode material, and an electrochemical device and an electronic device using the same. The anode material of the present application includes: a silicon compound SiOx, where x is 0.5-1.5; an oxide MeOy layer, the MeOy layer coating at least a portion of the silicon compound SiOx, where Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, where y is 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the MeOy layer. The anode material can significantly enhance the cycle performance and rate performance of the electrochemical device, and significantly reduce the impedance of the electrochemical device.

Abstract: An anode material includes a lithiated silicon oxide material and a MySiOz layer. The lithiated silicon oxide material includes Li2SiO3, Li2Si2O5 or a combination thereof, and the MySiOz layer coats the lithiated silicon oxide material; M includes Mg, Al, Zn, Ca, Ba, B or any combination thereof; and 0<y<3, and 0.5<z<6. The anode material has high first discharge coulombic efficiency, high gram capacity, and good cycle performance.

Abstract: A numerical control device having a function of changing a set parameter for controlling a control object at a certain timing includes a main control unit for outputting various commands, a memory for storing various data including the set parameter, a parameter input part for inputting a changed set parameter, and a parameter change command part for outputting an update command, wherein the parameter change command part includes a determination data selecting section for selecting determination data for determining a timing of change in accordance with a set parameter, a data acquiring section for acquiring a detection value of the determination data in a real-time manner, and a determining section for creating an update command on the basis of an acquired detection value.

Abstract: A control apparatus with a setting data change function for controlling operation of a control-target object comprises: a main control section that makes an operation command to the control-target object; an input section that receives an input of trial setting data for checking the operation of the control-target object; a setting data storage section including a first storage section that stores the trial setting data and a second storage section that stores the setting data; and a setting data management section that manages an input and a record into the setting data storage section, wherein the setting data management section includes: a mode switch section that switches operation modes; a memory synchronization section that establishes synchronization between the first storage section and the second storage section; and a memory discard section that discards the trial setting data.

Abstract: To provide a control system of a machine tool that enables a changed parameter to be reflected to a machine side in an arbitrary timing according to a worker's intention. A control system of a machine tool automated by reflecting a parameter by computerized numerical control, includes a storage unit that, when the parameter is changed, stores the parameter thus changed as a changed parameter, a changed parameter reflection condition setting unit that sets a condition for reflecting the changed parameter, and a changed parameter reflection unit that, when the condition is detected, reflects the changed parameter not yet reflected.

Abstract: A packaging film including a protective layer, a first bonding layer, a metal layer. a second bonding layer and a sealing layer. The protective layer, the first bonding layer, the metal layer. the second bonding layer, and the sealing layer are sequentially stacked. The protective layer includes a polymer resin layer and a carbon material.

Abstract: A composite negative electrode material includes a Si-M-C composite material and graphene on a surface of the Si-M-C composite material, where M includes at least one of boron, nitrogen, or oxygen. Solid state nuclear magnetic resonance testing of the Si-M-C composite material shows that chemical shifts of element silicon include ?5 ppm±5 ppm, ?35 ppm±5 ppm, ?75 ppm±5 ppm, and ?110 ppm±5 ppm, and a peak width at half height at ?5 ppm±5 ppm satisfies 7 ppm<K<28 ppm. The composite negative electrode material and the negative electrode plate and electrochemical apparatus that use the composite negative electrode material have good cycling performance.

Abstract: A negative electrode material, and a negative electrode plate, an electrochemical device, and an electronic device including the same. The negative electrode material includes SiMxCy, where 0.5?x?2, 0.5?y?4, and M includes at least one of boron, nitrogen, oxygen, or aluminum; for SiMxCy, a particle size at a quantity accumulation degree of A % is DNA, a particle size at a volume accumulation degree of B % is DVB, and a half-peak width of a quantity distribution curve is ?DN; and 2 ?m?(DV50?DN50)?6 ?m, and 1?(DN99?DN1)/?DN?1.3. The use of the negative electrode material, and the negative electrode plate, the electrochemical device and the electronic device including the same according to the present application achieve good cycle performance and energy density.

Abstract: A negative electrode material includes a silicon-based material, where a particle of the silicon-based material includes at least one recessed portion, and the recessed portion is 50 nm to 20 ?m in width, and 50 nm to 10 ?m in depth. The recessed structure leaves room for the silicon-based material to swell, thereby solving the problem of large volume swelling of the silicon-based material. In addition, when the silicon-based material with the recessed structure is composited with a carbon material, a conductive agent, and the like to form a negative electrode plate, small particles of the carbon material and the conductive agent are embedded into the recessed portion of the silicon-based material, solving the problem of low compacted density of the silicon-based negative electrode material with a recessed structure, and compensating for the low volumetric energy density of the recessed structure.

Abstract: A negative electrode material includes a composite of a silicon-based material (1), a polymer (2), and carbon nanotubes (3), where the polymer (2) contains a first group and a second group, the first group is chemically bonded to the carbon nanotubes (3), and the second group is chemically bonded to the silicon-based material (1). Both the carbon nanotubes (3) and the polymer (2) containing two groups are applied to surfaces of particles of the silicon-based material (1). The two groups of the polymer (2) are chemically bonded to the silicon-based material (1) and the carbon nanotubes (3) respectively, so that bonding force between the silicon-based material (1) and the carbon nanotubes (3) is enhanced and a uniform carbon nanotube (3) coating layer is formed. This can significantly improve conductive performance of the silicon-based material (1), thereby improving cycling performance and rate performance of an electrochemical apparatus.

Abstract: A negative electrode material includes a silicon-based material, where for a test cell including an electrode containing the negative electrode material and a counter electrode made of lithium metal, first-cycle efficiency of the test cell is 81% to 86%, and a discharge capacity at an electric potential of the electrode in the test cell being 0.17V accounts for 35% to 65% of a first-cycle discharge capacity of the test cell. A lithiation platform of particles of a silicon-based material is so defined that a lithiation capacity when an electric potential of the silicon-based negative electrode material in a test half cell is 0.17V accounts for 35% to 65% of a first-cycle lithiation capacity of the test half cell, thereby ensuring amorphous characteristics of the silicon-based material, significantly improving cycling performance of the negative electrode material, and reducing a swelling rate of an electrode assembly during cycling.

Abstract: A negative electrode material includes silicon-based particles and graphite particles. In a case that a Dn50/Dv50 ratio of the graphite particles is A and a Dn50/Dv50 ratio of the silicon-based particles is B, the following conditional expressions (1) to (3) are satisfied: 0.1?A?0.65 (1); 0.3?B?0.85 (2); and B>A (3), where, Dv50 is a particle diameter of particles measured when a cumulative volume fraction in a volume-based distribution reaches 50%, and Dn50 is a particle diameter of particles measured when a cumulative number fraction in a number-based distribution reaches 50%. The present invention further provides a negative electrode plate, a lithium-ion secondary battery or electrochemical device containing the negative electrode plate, and an electronic device containing the lithium-ion secondary battery and/or electrochemical device.

Abstract: A negative electrode plate includes a current collector and an active substance layer provided on the current collector, where the active substance layer includes a silicon-based material, and a proportion by mass of element silicon in the active substance layer has a minimum value X1 and a maximum value X2 among different locations of a same area size, where a value of X1/X2 is M, and M?0.7; and a weight loss rate of the active substance layer under thermogravimetric (TG) analysis within 800° C. has a minimum value Y1 and a maximum value Y2 among different locations of a same area size, where a value of Y1/Y2 is N, and N?0.7. In this disclosure, the silicon-based material and a binder in the active substance layer are uniformly dispersed, improving C-rate performance and cycling performance of the electrochemical apparatus and reducing swelling of an electrode assembly.

Abstract: A lithium-ion battery, including a battery cell, an electrolytic solution, and a packaging film. The battery cell is formed by winding a positive electrode plate and a negative electrode plate that are separated by a separator. The lithium-ion battery is half-charged to obtain a half-charged full battery. The half-charged full battery is stripped of the packaging film to obtain a half-charged cell. When a width of the half-charged full battery is w1, a width of the half-charged cell is w2, and g=w2/w1, the following conditional expression (1) is satisfied: 0.4<g<0.997. A negative active material of the negative electrode plate includes a silicon-based material. When a capacity per unit volume of the negative electrode plate is a, a and g satisfy the following conditional expression (2): 420 mAh/cm3<g×a<2300 mAh/cm3, where 619 mAh/cm3<a<3620 mAh/cm3. The present invention further provides an electronic device.

Abstract: An anode material includes silicon-based particles and graphite particles, wherein the average sphericity degree of the graphite particles is A, the average sphericity degree of the silicon-based particles is B, and A and B meet: 0<B?A?0.3. The anode material has good cycle performance, and the battery prepared with the anode material has better rate performance and lower deformation rate.