9results about How to "Improve puncture strength" patented technology

This invention relates to the field of battery technology, specifically to a separator layer and a battery including the separator layer. The separator layer comprises nanofibers and inorganic particles embedded within the nanofibers. The separator layer of this invention combines high air permeability and high puncture strength; batteries including the separator layer of this invention have low self-discharge levels, low impedance, and high safety performance.

The utility model belongs to the technical field of medical instruments, and discloses a puncture guide wire which comprises a puncture body and a rigidity balancing sleeve. The puncture body comprises at least two first puncture sections which are connected in sequence, and in every two adjacent first puncture sections, the diameter of the first puncture section close to the far end of the puncture guide wire is smaller than that of the other first puncture section; the number of the rigidity balance sleeves is at least two, the rigidity balance sleeves correspond to the first puncture sections in a one-to-one mode, the corresponding first puncture sections are fixedly sleeved with the rigidity balance sleeves, and in every two adjacent rigidity balance sleeves, the outer diameter of the rigidity balance sleeve close to the far end of the puncture guide wire is larger than that of the other rigidity balance sleeve. The flexural rigidity of the rigidity balance sleeve close to the far end of the puncture guide wire is larger than that of the other rigidity balance sleeve. Puncture guide wires with different strengths do not need to be replaced repeatedly, so that the operation time is saved, and the operation risk is reduced. And the size of the included angle opening of the U-shaped puncture head cannot be increased along with the feeding of the puncture guide wire, so that the blood vessel is prevented from being burst.

The present invention relates to a pouch-type battery case and a pouch-type secondary battery, the pouch-type battery case for accommodating an electrode assembly formed by stacking a positive electrode, a separator, and a negative electrode and comprising a pouch film laminate including: a sealing layer formed as an innermost layer from a first polymer, a gas barrier layer formed as an innermost layer from a second polymer, and a surface protection layer formed as an innermost layer from a third polymer; the surface protection layer is formed by a second polymer as an outermost layer; the gas barrier layer is laminated between the surface protection layer and the sealing layer and is formed of an aluminum alloy thin film having a thickness of 60 [mu] m to 100 [mu] m and a grain size of 10 [mu] m to 13 [mu] m.

This invention belongs to the field of polyethylene film technology and discloses a puncture-resistant linear low-density polyethylene composition and film. The polyethylene composition contains component A and component B, wherein component A is metallocene linear low-density polyethylene with a density of 0.90-0.92 g / cm³. 3 Component B: Linear low-density polyethylene, whose comonomer distribution, as determined by temperature leaching curve analysis, exhibits peaks above 93°C, and the proportion of molecules leached above 93°C is not less than 75%; based on the total weight of components A and B, the weight content of component B is 10-30 wt%. The polyethylene composition and film of the present invention exhibit excellent puncture resistance.

The application relates to the technical field of building waterproof materials, in particular to SBS elastomer modified asphalt waterproof coiled material and a production process thereof; the SBS elastomer modified asphalt waterproof coiled material comprises a bottom isolation layer, a lower coating cover layer, a polyester base reinforcing layer, an upper coating cover layer and a top isolation layer, and is formed through a composite molding step; the system combines multilayer co-extrusion and interface anchoring to construct an overall layered interlocking structure; the core is to utilize SBS and hydrogenated styrene-butadiene-styrene block copolymer dynamic micro-crosslinking to form a three-dimensional semi-interpenetrating polymer network, introduce microwave pre-activation waste rubber powder to produce mechanical interlocking, and supplement coupling modified talc powder to strengthen the interface anchoring of the coating material and the pre-impregnated base layer; through multiple phase interface synergy and network micro-crosslinking, the application improves the puncture resistance and weather resistance and crack resistance of the coiled material, and overcomes the technical defects of interlayer peeling and aging cracking under complex working conditions.

The utility model relates to the field of medical apparatus and instruments, and the utility model discloses a simple sampling forceps of multi -functional, including the shell, and its both ends are equipped with the opening, puncture needle, and the shell is penetrated through the both sides opening, and its front end is equipped with the sampling mouth, outer sheath, the sleeve is established on puncture needle, push handle, and the solid is established at puncture needle rear end, and with shell inner wall sliding cooperation, spring, and the clamping is established between shell inner wall front side and push handle front end, is used for driving puncture needle reset, limiting component sets up between push handle and shell, is used for fixing the front travel of puncture needle. The utility model structure is simple, and the operation is simple, is applicable to the operation field situation such as suturing, sampling, surgical area flushing, can improve the operation efficiency.

The application provides a single battery, an energy storage device and an energy storage system. The single battery comprises a shell having an open receiving cavity, and an electric core assembly arranged in the receiving cavity. The electric core assembly comprises a plurality of winding cores connected in parallel, and the winding cores are arranged in sequence along the thickness direction of the winding cores. The winding cores comprise a first winding core and a second winding core, and the first winding core is closer to the shell than the second winding core along the arrangement direction of the winding cores. The first winding core comprises a first diaphragm, and the second winding core comprises a second diaphragm. The puncture strength of the first diaphragm is greater than the puncture strength of the second diaphragm, and the thermal shrinkage rate of the first diaphragm is greater than the thermal shrinkage rate of the second diaphragm.

The present application relates to a laminate for an electric power storage device outer packaging material, and provides a laminate for an electric power storage device outer packaging material capable of obtaining sufficient moldability. A laminate for an electric power storage device outer packaging material (1) of the present application is characterized by comprising: a barrier layer (3) made of metal; a base material layer (2) formed of a heat-resistant resin, which is laminated to an outer side surface of the barrier layer (3); and a sealing layer (4) formed of a heat-fusible resin, which is laminated to an inner side surface of the barrier layer (3), the base material layer (2) is composed of a polyester film layer (21) as an outer side layer and a polyamide film layer (22) as an inner side layer, in terms of the polyester film layer (21), the sum of the tensile breaking strength in the MD and the tensile breaking strength in the TD is 500 MPa to 600 MPa, and the ratio of the tensile breaking strength in the TD to the tensile breaking strength in the MD is 0.8 to 1.1, and the tensile breaking elongation in the MD and the tensile breaking elongation in the TD are 110% to 200%. Here, MD: mechanical flow direction, TD: direction orthogonal to the MD.

The utility model discloses a kind of lithium ion battery separators prepared using inorganic organic composite material, specifically related to lithium ion battery field, including battery and the protective film of surface setting thereof, battery inside is provided with positive pole, separator and negative pole, and positive pole, separator and negative pole are sequentially arranged from inside to outside, the surface of the separator is provided with porous substrate, and the inside of porous substrate is provided with first coating, second coating and ceramic coating, the utility model is fused below 130 DEG C due to temperature-sensitive polymer microsphere, the air permeability value is promoted to 3500s / 100ml above from 150-300s / 100ml, can quickly block ion transmission path, simultaneously, by nano fiber network and ceramic particle form three-dimensional skeleton, after 1 hour is baked at 180 DEG C, MD direction shrinkage rate≤5%, again using substrate and coating between setting polydopamine coating layer, to enhance interface bonding force, puncture strength>3000g, greatly improve the puncture strength of battery separator.