20results about How to "Low heat generation" patented technology

Provided are a battery cell, a battery, an electrical apparatus, and a method and device for manufacturing a battery cell. The battery cell includes a case (110), an end cover (120), an electrode assembly (130) and a solder (140), the case (110) has an accommodating cavity (111) and an opening at one end; the end cover (120) is connected to the case (110); the electrode assembly (130) is provided in the accommodating cavity (111), the electrode assembly (130) has a first tab (131), and the first tab (131) faces the opening; the solder (140) is provided between the end cover (120) and the first tab (131) and connects the end cover (120) and the first tab (131); an insulating member (150) is also provided between the end cover (120) and the first tab (131), an insulating cavity (151) is provided on the insulating member (150), a feed port (152) is provided on one side of the insulating cavity (151), and the feed port (152) faces the solder (140).

The present invention relates to an electrode stack for a lithium secondary battery, in which one or more positive electrodes and one or more negative electrodes are alternatingly stacked with a separator therebetween, wherein an insulation layer having an average thickness of 1 um to 8 um is formed on the outermost positive electrode of the electrode stack, and the positive electrode includes a positive electrode collector; a positive electrode active material layer; and a protective layer including an inorganic compound which is disposed between the positive electrode collector and the positive electrode active material layer, and an electrode assembly and a lithium secondary battery which include the electrode stack.

Provided are a secondary battery and a preparation method thereof, and an electric device. The secondary battery includes a negative electrode plate and an electrolyte. The negative electrode plate includes a negative active material and a lithium supplement agent, and an insulating material is dissolved in the electrolyte. A mass ratio of the insulating material in the electrolyte ranges from 0.1% to 4%. The insulating material is derived from the negative electrode plate prior to injection the electrolyte, and the insulating material is arranged between the negative active material and the lithium supplement agent in the negative electrode plate prior to the injection the electrolyte.

The utility model discloses a compact single-action rotary clamping air cylinder, and belongs to the technical field of air cylinders. Comprising a rotating cylinder which is provided with a rotating shaft capable of rotating around the axis of the rotating shaft; the linear air cylinder is provided with a piston rod, and the piston rod can do linear motion independently in the axial direction; the rotating cylinder is detachably connected with the linear cylinder through a fastener, the rotating shaft is matched with the piston rod through a key groove, and when the rotating shaft is static, the piston rod can independently execute linear motion; when the rotating shaft rotates, the piston rod is driven to rotate synchronously. Due to the fact that the rotating action and the clamping action can be independently controlled, an operator can flexibly adjust the operation sequence according to different working condition requirements, the operation flexibility and logicality of the device are greatly improved, the device can better adapt to complex working scenes, and the production efficiency and the product quality are improved.

The application discloses a preparation method of modified white carbon black, modified white carbon black, and prepared masterbatch and vulcanized rubber. The preparation method of the modified white carbon black comprises the following steps: uniformly mixing silane coupling agent, sorbitan fatty acid ester surfactant, organic solvent and white carbon black to obtain the modified white carbon black. The application uses specific surfactant sorbitan fatty acid ester and silane coupling agent, modifies the white carbon black organic solvent dispersion liquid in a high-speed dispersion machine, and prepares the masterbatch filled with the white carbon black by liquid-phase compounding technology of the rubber solution, so as to prepare the rubber vulcanized rubber from the masterbatch. Compared with the traditional dry mixing technology or the wet mixing technology using the coupling agent alone, the dispersion of the white carbon black in the rubber matrix is better, the dynamic performance, heat generation and wear resistance of the rubber compound are improved, and the prepared vulcanized rubber can be used for preparing the tread rubber, so that the rolling resistance and heat generation of the tire are reduced.

The invention discloses a self-repairing rubber composite material and a preparation method thereof, and the self-repairing rubber composite material is prepared from the following raw materials in parts by mass: 100 parts of raw rubber, 1-5 parts of conductive carbon black ECP-600JD, 3-10 parts of an activating agent, 1-5 parts of an anti-aging agent, 1.5-7 parts of an accelerant, 2-10 parts of a vulcanizing agent, 10-20 parts of tackifying resin and 80-300 parts of a liquid olefin compound. The preparation method comprises the following steps: adding the raw rubber, the conductive carbon black ECP-600JD, the activating agent, the anti-aging agent and the accelerant into an internal mixer for mixing to obtain first mixed rubber; mixing the cooled first rubber compound with a vulcanizing agent on an open mill, and then batching off after rolling and triangular package making to obtain a second rubber compound; and adding the second rubber compound into a rubber kneading machine, and then adding tackifying resin and a liquid olefin compound for blending. The self-repairing rubber composite material disclosed by the invention is low in heat generation; in the preparation process, a low-temperature blending mode of combining an internal mixer and a rubber kneading machine is used, solid rubber and a large amount of liquid are mixed, energy consumption is low, and cost is low.

The application relates to the technical field of rubber, and discloses a rubber processing modified masterbatch, vulcanized rubber, a preparation method of the rubber processing modified masterbatch and the vulcanized rubber and application of the rubber processing modified masterbatch in a tire tread, wherein the rubber processing modified masterbatch is composed of a modifier, a base material and white oil; the content of the modifier is 76-81 parts by weight; the content of the base material is 14-17 parts by weight; and the content of the white oil is 3-7 parts by weight; and the base material comprises a polyolefin elastomer, an ethylene-propylene-diene rubber and an ethylene-vinyl acetate copolymer. The rubber processing modified masterbatch can improve the compatibility and dispersibility of maleic acid monomers in a high-viscosity rubber base, so that the strength of the tire tread rubber can be better improved, the heat generation of the tire tread rubber can be reduced, and the wet skid resistance can be improved.

Disclosed in the present application are an electrode sheet, an electrode assembly, a battery cell, a battery, and an electric apparatus. The electrode sheet comprises: a body part, at least part of the surface of the body part being coated with an active substance; a tab part, arranged on at least one side of the body part, and connected to the body part; and an opening, passing through the tab part in the thickness direction of the tab part, and provided with a first end and a second end. The first end and the second end are sequentially arranged in the direction away from the body part; and the opening extends from the first end to the second end along a preset route. In a production and manufacturing process of the electrode sheet provided by the embodiment of the application, a folding phenomenon of the tab part can be reduced, so that the tab part is prevented from being insufficient in overcurrent area, and thus when a battery cell is charged and discharged, heat generated by the tab part is reduced and the safety performance of the battery cell is improved. As the folding phenomenon of the tab part is reduced, the tab part and the body part of the electrode sheet can be prevented from being overlapped with each other, the capacity of the battery cell is prevented from being reduced, and the probability of short circuit of the battery cell is reduced.

This invention belongs to the technical field of graphene and functional rubber composites, specifically a simplified preparation process for high tear strength graphene-modified natural rubber based on an interpenetrating double crosslinked network structure constructed with two vulcanizing agents. This invention uses two vulcanizing agents: sulfur and peroxide. Sulfur rapidly forms a high-density carbon-sulfur crosslinked network (-C-Sx-C-) in the natural rubber composite, constituting the mechanical load-bearing skeleton between the natural rubber main chains, imparting high tear strength and fatigue resistance. Peroxide has a relatively slow vulcanization rate, and it slowly decomposes at lower temperatures to generate free radicals, constructing a stable -C-C- secondary crosslinked network between the terminal segments of the carbon-sulfur main network outside the sulfur vulcanization skeleton network. This improves the three-dimensional structural integrity of the vulcanization network, reduces the loss modulus of the rubber, and thus reduces heat generation during dynamic compression. This invention effectively improves the tear strength of natural rubber vulcanizates through the synergistic effect of nanofiller reinforcement and the interpenetrating double crosslinked network structure.

The present disclosure relates to a secondary battery, and provides a secondary battery capable of reducing heat generation and improving safety by reducing a welding area. To this end, the present disclosure provides a secondary battery comprising: an electrode assembly having a first tab and a second tab provided at the opposite side to the first tab; a first current collector which is welded on the first tab of the electrode assembly and has a diameter that is greater than the diameter of the electrode assembly; and a case assembly comprising a case which accommodates the electrode assembly and the first current collector, a second current collector which is in close contact with the second tab of the electrode assembly, and a terminal unit which is electrically connected to the second current collector and penetrates through the case.

This invention relates to the field of tobacco machinery processing technology, and provides a packaging edge cutting system for cigarette tipping paper winding. The winding machine body is equipped with packaging paper, and an edge cutting adjustment roller is installed on one side of the winding machine body. An edge cutting blade holder is movably mounted on the edge cutting adjustment roller. An upper blade sleeve is rotatably mounted inside the edge cutting blade holder, and an upper blade body is fixedly connected to the outside of the upper blade sleeve. A lower blade sleeve is rotatably mounted on the outer wall of the edge cutting blade holder, and a lower blade body is fixedly connected to the outside of the lower blade sleeve. The upper and lower blade sleeves are rotatably connected to the outside of the edge cutting blade holder in a spliced ​​manner. With the assistance of a quick-change structure consisting of an installation rod, a limiting rod, and a double spring assembly, the system can quickly release the blade sleeve locking state by pressing the limiting rod to retract after the machine stops, achieving tool-free disassembly and assembly of the blade assembly.

The present application provides a positive electrode current collector disc. The positive electrode current collector disc is located between a positive electrode tab and a positive electrode cover plate; the positive electrode current collector disc comprises a disc body and an electrical connection portion; the electrical connection portion extends from the disc body toward the positive electrode cover plate and protrudes; the disc body is in contact with the positive electrode tab; the electrical connection portion is in contact with the positive electrode cover plate. The present application greatly reduces the internal resistance of the positive electrode current collector disc, thereby improving the electrical conductivity of a battery; in addition, the electrical connector on the positive electrode current collector disc does not need to be bent in a "Z" shape, cracks are not prone to occurrence, assembly efficiency is high, and thus the positive electrode current collector disc satisfies industrial production requirements. The present application also provides a cylindrical battery.

The utility model provides a kind of locomotive diesel locomotive hook rapid butt joint calibration device, it is related to train technical field, including connecting base, the surface of connecting base is equipped with fixed hole, the right side fixed connection of connecting base has mounting plate, the inside of mounting plate is equipped with butt joint groove, the direction component is installed, the direction component includes the fixed shaft of installation on mounting plate upper surface, the surface of fixed shaft is equipped with direction gyro wheel;Through the setting of butt joint component, through the elastic rotation's two-way triangular clamping block structure, realize the closely and stable clamping of car hook, even if train operation is impacted by external force, can also guarantee connection firm, butt joint column and butt joint base provide stable connection point, enhance structural strength, can bear larger tension and pressure, threaded connection design facilitates installation and removal, it is beneficial to maintenance, two groups of butt joint groove design expands application range, satisfies different butt joint demand, improves device applicability.

A radiation probe including an optical fiber having a leak section that outputs leaking light to an outer side in a radial direction as at least part of a section in a longitudinal direction, wherein the optical fiber has a scattering area that causes the leaking light by scattering light in a predetermined area in a circumferential direction of the optical fiber in the leak section, and has directionality by which an intensity of the leaking light in two radial directions that are approximately parallel to each other is higher than an intensity of the leaking light in another radial direction in an intensity distribution of the leaking light in the circumferential direction in a cross-section intersecting an axial direction of the leak section. In the radiation probe, an intensity of the leaking light in one of the two radial directions approximately parallel to each other and an intensity of the leaking light in the other one of the two radial directions approximately parallel to each other may be different from each other.

The present disclosure relates to a negative electrode and a secondary battery including the same, wherein safety against external short circuit is improved by increasing resistance in the battery. In an aspect of the present disclosure, the electrode includes: a current collector; and a plurality of negative electrode active material layers provided on at least one side of the current collector, wherein the plurality of negative electrode active material layers include a first negative electrode active material layer including lithium titanium oxide (LTO) and carbon nanotube (CNT) and one or more second negative electrode active material layer including a negative electrode active material other than the lithium titanium oxide (LTO), the loading amount of the first negative electrode active material layer is 0.2 mAh / cm2 or less, and the first negative electrode active material layer is in contact with the current collector or is located between the two or more second negative electrode active material layers.

This invention relates to the field of rubber product technology, and provides a rubber composition and a rubber tire. The rubber composition comprises: 5-70 phr of natural rubber, 10-40 phr of light butadiene rubber, 1-70 phr of high cis-conjugated diene polymer, 1-20 phr of precipitated silica, 1-15 phr of silane coupling agent, 30-50 phr of general-purpose rubber carbon black, 1-10 phr of processing oil, 7-20 phr of resin, 3-6 phr of processing aid, 1-6 phr of activator, 1-6 phr of vulcanizing agent, and 1.5-5.5 phr of accelerator. The rubber composition includes one or both of light butadiene rubber and high cis-conjugated diene polymer. The rubber composition provided in this application, when applied to the bead of a rubber tire, exhibits excellent fatigue and tear resistance properties, extending the tire's service life.

The utility model discloses a tire with a low-heat-generation four-rubber tread, which belongs to the technical field of tread structures and comprises a first crown rubber area, a second crown rubber area, a wing rubber area and a base rubber area which are sequentially arranged from outside to inside to form a tread layer. The wing rubber areas are arranged on the two transverse sides of the base rubber, the first tire crown rubber area and the second tire crown rubber area are each of a structure with the two sides higher than the middle, and the base rubber area is of a plane structure. According to the tire with the low-heat-generation four-rubber tread, rolling resistance and control are controlled through the first tread rubber area combination mode and the second tread rubber area combination mode, low rolling resistance and high wet grabbing can be provided after vulcanization, the upper wing rubber area and the base layer rubber area are matched, the four-rubber tread adopts a four-composite technology, rolling resistance is reduced, heat generation is reduced, and the service life of the tire is prolonged.

The invention discloses a tire pattern and a tire. The tire pattern comprises a central pattern area, the central pattern area comprises a plurality of rows of V-shaped grooves which are uniformly distributed in the circumferential direction of the tire tread, and two main grooves which are parallel to each other are formed in the two sides of the central pattern area; the tire further comprises a first pattern area and a second pattern area, the first pattern area is located on the left side of the central pattern area, the corresponding main grooves are located between the first pattern area and the central pattern area, the first pattern area comprises a plurality of Z-shaped grooves evenly distributed in the circumferential direction of the tire, and the second pattern area is located on the right side of the central pattern area, and the corresponding main grooves are located between the second pattern area and the central pattern area. The second pattern area comprises a plurality of transverse grooves evenly distributed in the circumferential direction of the tire. Through symmetrical use of the tire, the driving stability and the uniform wear resistance of the tire can be improved, the phenomenon of low-deflection wear is reduced, meanwhile, the problem of driving direction deflection caused by different friction coefficients of a traditional asymmetric tire can be avoided, the driving safety is improved, and meanwhile, the oil consumption can be further reduced.

The application discloses a composite buffer type low-damage brake performance enhancing device, which comprises a brake disc, a first brake assembly and a U-shaped block arranged on the brake disc, a blocking mechanism arranged on the U-shaped block, a driving mechanism arranged on the U-shaped block and a second brake assembly arranged on the driving mechanism, and the U-shaped block is inverted U-shaped; the second brake assembly comprises double-cylinder friction mechanisms and single-cylinder friction mechanisms which are simultaneously arranged on the output end of the driving mechanism, an E-shaped block is arranged on the double-cylinder friction mechanisms, and the lower middle part of the E-shaped block is slidably connected with the upper end of the single-cylinder friction mechanisms; the blocking mechanism is used for blocking the E-shaped block, so as to block the movement of the double-cylinder friction mechanisms and make the single-cylinder friction mechanisms be able to be compressed on both sides of the brake disc; air inlet mechanisms and air outlet mechanisms are arranged on the upper end of the E-shaped block, and a first air outlet groove for air outlet is arranged on the blocking mechanism. The application has the advantages of high-efficiency heat dissipation, adjustable composite brake mode, low abrasion and buffering and damping.

The present application relates to the technical field of composite materials, in particular to a sidewall rubber composition, a sidewall rubber and a tire. The sidewall rubber provided by the present application contains an environmentally friendly bio-based itaconate rubber, which is used to replace natural rubber or butadiene rubber in the traditional sidewall formula in equal amount, thereby reducing the dependence on petrochemical raw materials, being conducive to energy saving and carbon reduction, and the sidewall rubber composite obtained at the same time has excellent physical and mechanical properties, in particular has outstanding fatigue resistance and aging resistance, and has low heat generation and low rolling resistance, and other basic mechanical properties also meet the requirements. In addition, the processing technology of the sidewall rubber is simple, and the requirement for equipment is low. Experiments show that the sidewall rubber with high fatigue resistance, low compression heat generation and low rolling resistance is successfully prepared, wherein the sidewall rubber prepared by using aromatic oil and petroleum resin as plasticizer has a flex fatigue resistance of more than 5 million times, and the compression heat generation can be reduced to below 10 DEG C.