131results about How to "Avoid chain reaction" patented technology

An improved method of photoresist removal is disclosed in which a treating solution of ozone and bicarbonate or other suitable radical scavengers is used to treat a substrate for use in an electronic device. The method is particularly well suited to photoresist removal where certain metals such as aluminum, copper and oxides thereof are present on the surface of the substrate. The method is also well suited to the removal of other organic materials as well.

The invention belongs to the technical field of lithium ion batteries and specifically relates to a high-safety lithium manganese iron phosphate battery. The high-safety lithium manganese iron phosphate battery comprises a positive plate, a negative plate, an isolating membrane, an electrolyte and a battery shell, wherein the positive plate includes a positive pole current collector and a positive pole active material layer which is coated on a surface of the positive pole current collector; the positive pole active material layer includes the following components by weight percentage: 90wt%-96wt% of positive pole active material, 1.5wt%-5wt% of positive pole conductive agent and 2wt%-5wt% of positive pole binding agent; the positive pole conductive agent is a mixture of conductive carbon black and at least one of a carbon nano tube or graphene; and the ratio of the conductive carbon black to at least another conductive agent is 1wt%:0.5wt% to 4wt%:1wt% based on the weight percentage in the positive pole active material layer; the isolating membrane is one of a polyolefin film or a non-woven cloth film; and the electrolyte is a high-temperature-resistant electrolyte. Compared with a nickel cobalt lithium manganate ternary battery and a lithium iron phosphate battery, the high-safety lithium manganese iron phosphate battery has relatively high weight specific energy and relatively high safety performance at the same time, has a long cycle life and is suitable for popularization and application in the field of new energy vehicles.

The invention relates to a method for processing a ternary material by being clad with lithium ferric manganese phosphate. The invention belongs to the technical field of a cathode material of lithium ion batteries. The method for processing the ternary material by being clad with the lithium the ferric manganese phosphate comprises the steps of 1, preparation of LFMP precursor slurry: respectively weighing iron, manganese, lithium and phosphorus sources in proportion required by 0.1-100g LFMP, weighing 0-50g ascorbic acid, and adding a dispersion solvent, wherein the solid content is 10%-80%; 2, mixture of materials: weighing 100g ternary material with the constitute of Li(z)Ni(1-x-y)Co(x)Mn(y)O(2), or the mixture of two or more constitutes with the above proportion, adding the slurry, mixing the slurry and the mixture, and carrying out vacuum drying; 3, preparation of the ternary material / lithium ferric manganese phosphate composite cathode material: putting the materials into an argon protective atmosphere sintering surface, keeping warm at the temperature of 250-400 DEG C for 2-6h, then heating to 500-700 DEG C and keeping for 6-16h, cooling along with the furnace, and sieving. The method provided by the invention has the advantages of being simple in technology, convenient to operate, accordant in material performance, small in influence on cell capacity density, and being capable of improving safety performance of the ternary material.

The present invention provides a battery block that accommodates unit cells having higher capacities, and, even in case of abnormal heat generation in the unit cell, does not cause abnormal heat generation in the neighboring unit cells, thereby preventing a chain reaction of degradations and abnormalities of the accommodated unit cells. The battery block of the present invention includes a battery case having a minimum thickness section satisfying the relationship “K2 / K1≧K3−1”. K1 is the thermal conductance between the battery case and the unit cell. K2 is the thermal conductance of the minimum thickness section of the battery case between two neighboring holes for accommodating the respective unit cells. K3 is a ratio between the abnormal heat temperature of a reference cell and the ambient temperature causing abnormal heat generation in this cell.

The present invention relates to a battery system comprising a housing, a separator plate having a plurality of vent holes and a plurality of sealing bodies, and a plurality of battery cells having safety valves. The housing encloses an accommodation space. The separator plate is arranged in the housing and separates the accommodation space into a battery area and an isolation area. The pluralityof vent holes are arranged in the surface of the separator plate. Each of the sealing bodies closes one of the vent holes. The plurality of battery cells are arranged in the battery area, and each ofthe battery cells is arranged opposite to one of the vent holes. The safety valve is arranged on the surface of the battery cell and opposite to the vent hole. As the heat of the battery cell is out of control, the sealing body is flushed open and eruption enters the isolation zone. The separator plate can isolate the eruption of the battery cell from other battery cells that are not out of control, reduce the possibility of thermal runaway spreading, greatly improve the safety of the battery module, and reduce the safety hidden danger.

A concrete storage module (26) is adapted to slideably receive a cylindrical canister assembly (12) therein. Heat dissipation fins (62) and a tubular heat shield (96) are disposed within the module to help dissipate heat emitted from nuclear fuel assemblies stored in the canister to air flowing through the module. The canister assembly (12) is composed of a basket assembly (70) constructed from multi-layer structural plates disposed in cross-cross or egg carton configuration. A single port tool (106) is provided for draining water from the canister (12) and replacing the drain water with make-up gas. The single port tool is mounted in the cover (100) of the canister and is in fluid flow communication with the interior of the canister.

The invention relates to a material for maintenance of tunnel asphalt pavement, in particular to a pavement maintenance mixture for solving the problems of organic flame retardance and environmental protection, belonging to the technical field of manufacture of road asphalt pavement materials. The mixture comprises the following components in percentage by weight: 71-86% of macadam, 6-10% of modified emulsified asphalt, 1-3% of padding, 1-2% of organic flame retardant, 1-2% of assistant and the balance water. The environment-friendly asphalt flame retardant is applied to micro-surfacing maintenance and treatment of the tunnel asphalt pavement, and the flame retardance of the micro-surfacing mixture is improved without changing each property of the micro-surfacing mixture for the pavement, thereby solving the problems of fire safety and environmental protection of the tunnel asphalt pavement. The formula can not influence various service properties of the original pavement and does not increase the construction difficulty. Thus, the environment-friendly flame-retardant micro-surfacing mixture for the tunnel has better popularization value and can better solve the problem of flame retardance of the tunnel asphalt pavement in the process of maintenance.

A driving assistance method executed by a driving assistance device including a tri-axial accelerometer, an information presentation controller, and an information presentation section. The driving assistance method includes: a congestion warning sign information acquisition step for acquiring congestion warning sign information based on change in the acceleration; a multi-lane information acquisition step for acquiring information regarding whether or not the position of the driving assistance device is on a multiple lane travel path; a restriction information presentation step for presenting information indicating lane change restriction when the position is on the multiple lane travel path and congestion warning sign information indicates traffic flow tending toward congestion; and a non-restriction information presentation step for presenting information indicating non-restriction of lane change when the position is on the multiple lane travel path and congestion warning sign information does not indicate traffic flow tending toward congestion.

The invention discloses a mobile phone APP communication system and a load balancing method and a car renting method. A communication system comprises a mobile phone APP and a network management platform, the mobile phone APP is connected with a member authentication service, a heartbeat and message push service and the APP service group of the network management platform through a HTTP request; the member authentication service, the heartbeat and message push service and the APP service group are respectively connected with a member logging status database, a message queue is respectively connected with the APP service group, the feed deduction service and the short message service. The application terminal is decoupled from the control terminal, the abnormal probability of a control terminal caused by the abnormality of the application terminal is effectively solved; the client is free from processing any service logic, so that the application terminal is lightweight. The scheme disclosed by the invention is suitable for all electric vehicle renting systems.

A battery includes a valve unit which is disposed on a first surface of a battery container to be broken when a gas pressure in the battery container increases to a predetermined value or greater, so as to guide a gas in the battery container in a direction inclined at a predetermined angle with respect to a normal direction of the first surface to discharge the gas to the outside.

The invention discloses a power battery module with a disaster prevention system. The power battery module comprises a single battery and a battery module, wherein the single battery comprises a battery core, an outer wall of the battery core, a phase-change material, a temperature sensor, a shell and a base; the battery module comprises a frame body, the phase-change material, a ventilation duct and a head cover; the phase-change material is a mixture of graphite, a flame retardant and more than one of a lauric acid, a stearic acid or paraffin; the part between the battery core and the shell is filled with the phase-change material as a buffer body and a temperature absorber of a spike; the outer wall of the battery core is made of plastic; the battery core is fixed in a screw hole in the upper end of the frame body and the base; and the temperature sensor is fixed on the surface of the plastic to control the temperature of the battery core at any time. According to an acupuncture experiment of the power battery module, overall cooling and temperature equilibrium distribution of a power battery in a severe environment can be achieved; and light weight of the power battery module is achieved by adopting a low-density high polymer material.

The invention discloses a hot-pressed flame-retardant power supply protection system and belongs to the field of power supplies. According to the system, lithium battery bodies are wrapped with a protection pad, so that the lithium battery bodies can be protected. When the lithium battery bodies are impacted by the outside, the protection pad can absorb a part of impact energy to prevent the shells of the lithium battery bodies from being broken; meanwhile, two adjacent lithium battery bodies are separated by the protection pad, chain reaction caused by thermal runaway of one lithium battery body is effectively avoided, then when the thermal runaway begins to occur, thermal expansion balls are expanded and enlarged by high-temperature heat so as to extrude a cflame retardant out of a capsule shell, so that expansion and spreading of fire can be effectively prevented after open fire occurs, absorption balls filled in the flame retardant can absorb leaked electrolyte, the amount of comburent is reduced to a certain extent, the spread of the fire is further prevented; and fire extinguishing particles release dry ice during battery combustion, absorb heat and sublimate into gas to isolate air, so that the spread of the fire is effectively prevented.

The invention discloses an environment friendly type tunnel flame-proof pitch water chestnut ether broken stone mixed material, which comprises the following steps: counting with the total weight proportion of the pitch mixed material as 0. 3%-0. 5% mineral fiber, 1. 0%-1. 2% organic fire retardant, 5. 5%-6. 0% pitch, 92. 3-93. 2% broken stone; choosing the mineral fiber with the density not less than 2. 5g / cm3 and strength for extension as 3500MPa; choosing the elastic modulus of the mineral fiber as 85GPa, percentage of breaking elongation as 2. 5%, the highest working temperature at 500 deg. c and the length more than 6mm; choosing the organic fire retardant with the density at 1. 2-2. 0g / cm3 and the effective content not less than 70%; setting the fusion temperature of the organic fire retardant not less than 120 deg. c, the moisture percentage less than 5% and the fire point not less than 260 deg. c. This mixed material can prevent burning of tunnel pitch water chestnut ether broken stone mixed material (SMA) pavement effectively, which possesses environmental protection function.

The invention discloses a rail transit intelligent early warning system based on an association relation and a realization method. A first association rule implicant form is generated according to the relation between the mimimal cut set of a fault tree and a top event. A data mining tool is used to dig the relation between the historical data in a history database, and a second association rule implicant form is generated. An expert evaluation system screens a third association rule implicant form, and a fault generation probability, a harm degree, an alarm grade and an alarm threshold are set. A background service module periodically each node state information. Finally the early warning is carried out through a man-machine interaction interface. The problem of the intelligent early warning of fault points with an association relation is solved, and a further link reaction is prevented. A process from a quantitative change to a qualitative change can be clearly displayed, and the early warning information is correct and timely. The association relation between faults is correctly and reasonably processed, the reliability and abundance of the early warning information are improved, and the safety of rail transit is established on active defense.

The invention discloses a peer-to-peer streaming media living broadcast system and a data transmission method therefor. The system comprises a data source server, an index server, and a plurality of client nodes which are distributed in N horizontal levels. One or more data compensation servers are deployed in every horizontal level or many of the horizontal levels The client nodes in the first level acquire content data of a streaming media program from the data source server and provide the content data for the one or more client nodes in the second level, the client nodes in the kth level acquire the content data from the client nodes in the (k-1)th level and provide the content data for the one or more client nodes in the (k+1)th level, and the client nodes in the Nth level acquire the content data from the client nodes in the (N-1)th level. The client nodes acquire the content data from the corresponding data compensation server when the client nodes can not acquire the content data from the data source server or the client nodes in the previous level. According to the invention, source nodes of data required by nodes can be positioned quickly, network congestion is avoided, and network stability is improved.

The invention provides a functional heat insulation device for a lithium battery, comprising a functional material which is a material having a fire extinguishing function and a heat absorption and cooling function, and the functional heat insulation device is fixedly mounted on a side surface of a lithium ion cell. Compared with the existing insulation cotton technology, the device can more effectively prevent the heat transfer phenomenon between lithium ion cells, reduce the energy produced by lithium battery deflagration, and avoid the occurrence of lithium ion battery ignition, thus effectively reducing the chain reaction caused by lithium ion battery ignition or explosion, and improving the safety performance of a lithium ion battery to a large extent.

The invention relates to the field of a lithium ion battery electrode material, and discloses metal element-doped lithium iron phosphate-coated lithium nickel-cobalt manganate and a preparation methodthereof. The preparation method comprises the steps of performing thermal treatment on the lithium nickel-cobalt manganate and a mixture of an M element-doped lithium iron phosphate precursor mixed liquid comprising a lithium source, a doped metal M source, an iron source and a phosphorus source; performing solid-liquid separation on a product obtained after thermal treatment, and drying to obtain a solid phase, wherein a solvent in the M element-doped lithium iron phosphate precursor mixed liquid comprising the lithium source, the doped metal M source, the iron source and the phosphorus source is used as an organic solvent. The organic solvent is used as a reaction liquid, the problem of serious water absorption of a lithium nickel-cobalt manganate ternary material, particularly a high-nickel ternary material is effectively solved, so that the metal element-doped lithium iron phosphate-coated lithium nickel-cobalt manganate having favorable electrochemical performance is prepared.

The invention provides a diffractive ring mangiferin in a mango leaf and an application of a mango leaf extract containing the diffractive ring mangiferin in the aspect of antioxidation activity, in particular to an application in preparing a medicine or a cosmetic for preventing or treating symptoms or diseases relevant to an oxygen radical. The symptoms or the diseases relevant to the oxygen radical comprise wrinkles, macula, allergic dermatitis, contact dermatitis or chronic eczema, and the like, and a composition for preventing or treating the symptoms or the diseases relevant to the oxygen radical comprises one or any composition of diffractive ring mangiferin A, diffractive ring mangiferin B or the mango leaf extract with a treating and / or preventing effective dose and an optional pharmaceutical or cosmetic acceptable excipient.

The invention discloses a new energy acceptance capability and minimum startup evaluation method based on transient safety margin. Sensitivity indexes for new energy output changes and conventional unit output changes are established respectively based on transient voltage safety margin quantization information. Under the constraint of the section quota of a power grid, the power supply organization form is coordinated based on the sensitivity indexes. The maximum output of the new energy of a system and the minimum startup mode of a conventional power supply for ensuring new energy transientvoltage safety under a bundling new energy delivery direct current fault are acquired. System chain reaction caused by new energy transient over-voltage disconnection is avoided. Decision guidance isprovided for dispatch and operation of the power grid.

The invention discloses a client communication system, load balancing method and vehicle renting method. The communication system includes a client and a network management platform, wherein the client includes a mobile phone APP, a vehicle-mounted APP and a WEB user platform; the mobile phone APP and the vehicle-mounted APP are connected with a member authentication service, a heartbeat and message pushing service and an APP service group of the network management platform through an HTTP request, the WEB user platform is connected with the member authentication service and the APP service group through the HTTP request, the member authentication service, the heartbeat and message pushing service and the APP service group are connected with a member login state database, and a message queue is connected with the APP service group, a fee deduction service and a short message service. The communication system decouples an application terminal with a control terminal, thereby effectively solving the problem of the occurrence of the probability that an abnormality of the application terminal causes an abnormality of the control terminal; and a client does not process any service logic, thereby enabling the application terminal to be lightweight. The scheme is suitable for all electric automobile leasing systems.

The invention discloses a heat-resistant thermoplastic elastomer and a preparation method thereof. According to the preparation method, by virtue of a theory that an antioxidant has relatively more lively hydrogen atoms molecules of EPDM and PP, the hydrogen atoms of the antioxidant can easily react with peroxy radicals generated by a blend molecular chain under heat and oxygen in a thermo-oxidative aging process of an EPDM / PP blend, the chain reaction of free radicals is inhibited, and the cleavage and the oxidative cleavage of the molecular chain are prevented, so that the heat resistance of EPDM / PP TPV is improved, and the aging resistance of EPDM / PP TPV is improved. Calcium sulfate whiskers modified by virtue of a silane coupling agent KH-550 form a 'hard core-soft shell' coating structure with EPDM in the blending process of EPDM / PP, and the disperse state of calcium sulfate has a certain blocking effect to gas during thermo-oxidative aging and impedes the conduction of gas and heat, so that the heat resistance stability of EPDM / PP TPV is improved, and the heat aging resistance of EPDM / PP TPV is meliorated.

A driving assistance method executed by a driving assistance device including a tri-axial accelerometer, an information presentation controller, and an information presentation section. The driving assistance method includes: a congestion warning sign information acquisition step for acquiring congestion warning sign information based on change in the acceleration; a multi-lane information acquisition step for acquiring information regarding whether or not the position of the driving assistance device is on a multiple lane travel path; a restriction information presentation step for presenting information indicating lane change restriction when the position is on the multiple lane travel path and congestion warning sign information indicates traffic flow tending toward congestion; and a non-restriction information presentation step for presenting information indicating non-restriction of lane change when the position is on the multiple lane travel path and congestion warning sign information does not indicate traffic flow tending toward congestion.

The invention discloses a synthesis method of improved efficient flame-retardant epoxy ethyl ester resin. Disphenol A epoxy resin is used as a synthesis material, and other synthesis materials includechain extender binary acid containing halogen element, unsaturated monoacid, flame-retardant aid, catalyst, polymerization inhibitor, antioxidant and crosslinking agent. By introducing the reactive chain extender containing flame-retardant element and adding the solvent-type organic phosphate flame-retardant aid for compounding, flame-retardant synergism between the chain extender and the flame-retardant aid is brought into full play to prepare the efficient flame-retardant epoxy ethyl ester resin.

The invention provides a multi-section anchoring automatic yielding anchor rod and an anchoring method, and relates to the technical field of yielding anchor rods. The anchor rod comprises a rod body,a tray, a lock nut, a yielding sleeve, an annular serrated knife, an annular rubber ring and a yielding stop block; the yielding stop block is welded to the anchor rod body, and the connection strength between the yielding stop block and the rod body is smaller than the tensile strength of the anchor rod; and the yielding sleeve is further arranged on the rod body, and the annular rubber ring andthe annular serrated knife are arranged on the yielding sleeve. When the anchor rod is used for anchoring, firstly, roadway surrounding rock is drilled, and the hole diameter is equal to the outer diameter of the annular rubber ring; secondly, an anchoring agent is installed on the yielding sleeve in the middle of the anchor rod body, then a drilling machine is used for driving the rod body to rotate; and finally the lock nut and the tray are arranged, and pre-tightening force is applied, so that the anchor rod realizes multi-section automatic yielding after anchoring. The technical problem that the whole anchor rod loses efficacy due to local deformation of surrounding rock is solved, and the anchor rod has the advantages of being high in adaptability, easy to operate and the like.

The invention discloses a mesoporous molecular sieve modified anti-rutting agent and a preparation method thereof, wherein the anti-rutting agent comprises the following raw material components by weight: 45-55 parts of high-density polyethylene, 45-55 parts of low-density polyethylene, 10-30 parts of styrene-butadiene rubber, 10-30 parts of polypropylene, and 5-8 parts of a modified mesoporous molecular sieve, wherein the modified mesoporous molecular sieve is a mesoporous molecular sieve modified with aminosilane, mercaptosilane and hindered phenol type antioxidant, and the hindered phenol type antioxidant contains a carboxyl group. According to the present invention, with the anti-rutting agent, the rutting resistance and the low temperature performance of the asphalt concrete are significantly increased, and the anti-aging performance of the asphalt concrete is improved so as to prolong the service life of the road.

The invention discloses an on-vehicle APP communication system, a load balancing method and a vehicle renting method. The communication system comprises an on-vehicle APP and a network management platform. The on-vehicle APP is connected with a member authentication service, a heartbeat and message pushing service and an APP service group of the network management platform through an HTTP request. The member authentication service, the heartbeat and message pushing service are connected with a member logging-on state database. A message queue is connected with the APP service group, a deduction service and a short message service. According to the on-vehicle APP communication system, the load balancing method and the vehicle renting method, an application terminal and a control terminal are decoupled, thereby effectively settling control end abnormity caused by application end abnormity. The client does not process any service logic, thereby realizing small weight of the application terminal. The on-vehicle APP communication system, the load balancing method and the vehicle renting method are suitable for all electric vehicle renting systems.

The invention discloses a battery pack with a short-circuit protection function. The battery pack comprises batteries and connection protecting sheets; the number of the batteries is at least two, and the batteries are in serial connection or in parallel connection through the connection protecting sheets; each battery is provided with a positive terminal and a negative terminal; each connection protecting sheet is provided with at least two lugs; the connection protecting sheet is connected with the positive terminal and the negative terminal through the lugs; and the connection protecting sheet is slotted between the lugs to form a narrowed conductive connection part capable of fusing in short circuit of the batteries. According to the battery pack, the connection protecting sheets are slotted in the current path in the section direction for being narrowed and shrunk; the slotted, narrowed and shrunk connection protecting sheets reduce the section area of the current path, namely, the overcurrent capability of the connection protecting sheets is reduced, however, the current-passing capability in normal use can be ensured, and meanwhile, the connection protecting sheet can be fused in time in encountering large current for realizing overcurrent and protection. The battery pack is simple in manufacturing process, and capable of improving the current-passing capability among the batteries, and the battery can be switched off in encountering higher current so as to avoid chain reactions.

The invention relates to the technical field of garment materials, and particularly discloses a flame-retardant lyocell fiber and a preparation method thereof. The flame-retardant lyocell fiber is prepared by blending and spinning the following raw materials in parts by weight: 20-80 parts of N-methyl morpholine oxide with the mass fraction of 50%; 5-8 parts of bamboo pulp; 1-2 parts of starch; 1-2 parts of phosphoric acid; and 1-2 parts of urea. The preparation method comprises the following steps: 1, preparing a composite organic solvent; 2, preparing a lyocell fiber spinning solution stocksolution; 3, preparing a flame-retardant lyocell fiber spinning solution stock solution; 4, preparing a flame-retardant lyocell fiber spinning solution; 5, extruding precursors through a screw extruder and a spinneret plate, and enabling the precursors to enter a coagulating bath to obtain flame-retardant lyocell fibers; 6, performing alcohol washing on the flame-retardant lyocell fibers; 7, washing the flame-retardant lyocell fibers with water; 8, oiling the flame-retardant lyocell fibers; and 9, drying the flame-retardant lyocell fibers. The flame-retardant lyocell fibers have the advantagethat the flame-retardant property of the lyocell fibers is improved.

The invention relates to the field of plastic purse nets, in particular to an anti-aging plastic purse net which is prepared by the following steps: uniformly mixing polyvinyl chloride, nylon, polyisoprene rubber, nano titanium dioxide, chlorinated paraffin and a high-temperature-resistant anti-aging additive to obtain a mixture, adding the mixture into an extruder for melting and extrusion molding to obtain an anti-aging net rope, weaving and forming the anti-aging net ropes, and obtaining the anti-aging plastic surrounding net. The high-temperature-resistant anti-aging additive in the anti-aging plastic purse seine endows the high-temperature-resistant anti-aging additive with good high-temperature resistance and ultraviolet resistance, and can endow the high-temperature-resistant anti-aging additive with better anti-aging performance, so that the service life of the anti-aging plastic purse seine is prolonged; the problem that an existing plastic purse net can be subjected to degradation reactions such as photooxidation and thermal oxidation under the conditions of light, oxygen, heat and the like, and the plastic purse net is aged is solved.