153results about How to "Relieve deformation" patented technology

The invention provides a lithium-rich pole piece of a lithium ion battery and a preparation method thereof. The lithium-rich pole piece comprises a current collector, a diaphragm and a porous lithium piece, wherein the diaphragm contains an active material and is formed on the current collector; the diaphragm and the current collector form an initial pole piece; and the porous lithium piece covers the diaphragm, and the capacity of the porous lithium piece is matched with the capacity of lithium added to the anode. The preparation method comprises the following steps of: preparing a slurry from the active material, a conductive agent, an adhesive and a solvent, and then applying the slurry on the current collector and drying to obtain the initial pole piece, so that the slurry applied on the current collector becomes the diaphragm after being dried; punching a metal lithium piece to obtain the porous lithium piece, so that the capacity of the porous lithium piece is matched with the capacity of lithium added to the anode; and covering the diaphragm surface of the initial pole piece with the porous lithium piece, to obtain the lithium-rich pole piece of the lithium ion battery. According to the invention, the lithium amount added to the anode can be precisely controlled, the lithium adding uniformity is increased, the first coulombic efficiency, the energy density and the electrochemical properties of the battery are increased, battery deformation is alleviated, the process is simple, and the cost is low.

The invention belongs to the technical field of lithium ion batteries, in particular relates to a composite anode material for the lithium ion battery. The composite anode material comprises an anode active substance and a coating layer coated on the surface of the anode active substance, wherein the anode active substance can be Si, SiOx or silicon alloy, the coating layer is polymer which is of a reticular structure, and the mass percent of the coating layer accounts for 1-20% of the anode material. Compared with the prior art, the composite anode material has the advantages that the polymer which is of the reticular structure and used as the coating layer is coated on the surface of the active substance in a cross-linking manner, the coating layer has the electron conduction property and the ion conduction property, so that the situation that the lithium ions can be inserted into and separated from the anode active substance particles smoothly is ensured; furthermore, the coating layer is of the reticular structure and has good mechanical strength, and therefore, the integrality of the anode active substance particles can be kept in the electrochemical cycle process, the deformation of an anode strip is relieved, the electrochemical cycle performance of the lithium ion battery is improved and the service life of the lithium ion battery is prolonged.

The invention provides an image generation apparatus and an image generation method through which a user can notice the object backward that exists in the direction opposite to the traveling direction of the vehicle. Therefore in the image display system, a shift determining part determines the traveling direction of a vehicle (9). The composite image CP1 which is generated by a composite image generator shows a peripheral area (A1) as the periphery of the vehicle (9) and a backward area (A2) as the area behind the vehicle (9) and includes the peripheral area (A1) that centers the image of the vehicle (9) and is viewed from a virtual viewpoint that looks down the vehicle (9). A display displays a display image (DP1) which includes the composite image (CP1). The display image (DP1) includes the composite (CP1) which shows the backward area (A2) which is opposite to the traveling direction of the vehicle (9). The user can notice the object backward that exists in the direction opposite to the traveling direction of the vehicle (9) by looking at the composite image (CP1).

The invention discloses a steel pipe concrete sleeper suitable for ballastless tracks, which comprises two or more sleeper concrete blocks and a sleeper connecting piece for connecting the sleeper concrete blocks, the sleeper concrete block is in a block structure, and is made of concrete It is made by pouring, and there are embedded parts for fixing the rails and steel mesh or stirrups connecting the sleeper connectors; the sleeper connectors are composed of a plurality of hollow steel pipes arranged horizontally between the concrete blocks of the sleeper. During the block pouring process, the hollow steel pipe is filled with concrete at the same time to form the concrete filled steel pipe, and then the sleeper connector and the concrete block of the sleeper are poured into one body. In the invention, the concrete-filled steel tube is applied in the concrete sleeper of ballastless track, the concrete-filled steel tube is used as the connector of the sleeper block, and the concrete-filled steel tube and the concrete block of the sleeper are integrally formed, so as to effectively increase the geometric shape and position retention capacity of the sleeper, reduce the amount of steel, and have the advantages of simple preparation , Strong constructability and so on.

The invention relates to a large-volume leather bag type constant-pressure energy accumulator and application thereof. The large-volume leather bag type constant-pressure energy accumulator comprisesa shell and further comprises a leather bag, a variable area piston, a floating piston, a piston and a flange which are arranged in the shell. The floating piston sleeves a piston rod of the variablearea piston. The bottom end of the piston rod of the variable area piston is connected with the piston, and a through hole is formed in the center axes of the variable area piston and the piston, an inflation valve is connected between the through hole and the leather bag, the bottom of the through hole is connected with a cover plate, the piston is provided with a one-way valve I and a one-way valve II, and the flange is connected with the inner wall of the bottom of the shell. The novel large-volume leather bag type constant-pressure energy accumulator has the advantages that leakage is notlikely to happen, the service life is long, inertia is small, the response is sensitive, and the applicable volume range is wide; and the novel large-volume leather bag type constant-pressure energy accumulator can be widely applicable to various hydraulic systems.

The invention discloses a lithium ion battery self-supporting silicon-based anode material with a multilayered film and a preparation method of the anode material. The anode material is made from silicon nano-particles and carbon nano-fibers through compounding, wherein the mass ratio of silicon to carbon is 1:0.5-1:6 and the thickness ratio of a carbon fiber layer to a silicon-carbon compound fiber layer is 1:1-1:5. The preparation method comprises the following steps: dispersing a mixture formed from silicon nano-particles / an organic high-molecular polymer and an organic high-molecular polymer in an organic agent, respectively, and performing fully stirring to obtain an uniform suspension and solution; through control of the injection volume and time of electrostatic spinning, obtaining a multilayered periodic structure of carbon-carbon silicon compound-carbon-carbon silicon compound...-carbon; and performing carbonization treatment in the protective atmosphere to obtain the lithium ion battery self-supporting silicon-based anode material with a multilayered film. The anode material has characteristics of self-supporting, high capacity, good cyclic stability and simple preparation.

The invention provides a power supply wire for high-frequency current which reduces a supply loss of current affected by the skin effect and has a high degree of freedom in laying. The power supply wire for high-frequency current (1) comprises: a corrugated tube made of metal (13); a combined electric wire (10) disposed inside the corrugated tube (13) and including a plurality of unit electric wires (20) and a sheath material (23), each of the unit electric wires (20) being formed by bundling together a plurality of conductive wires (11) individually coated with insulating films (12), and the sheath material (23) covering the plurality of unit electric wires (20); and a gap (14) formed between the corrugated tube (13) and the combined electric wire (10).