56results about How to "Fulfill usage requirements" patented technology

The invention discloses a method for surface modification of a ternary cathode material for lithium ion batteries by fluorine-based ionic liquid, which comprises the following steps: (1) a ternary cathode material is added into fluorine-based ionic liquid, which includes alkyl imidazole tetrafluoroborate, 1-ethyl acetate-3-methylimidazole tetrafluoroborate, and the like; and (2) stirring, filtering, washing, drying and calcining are carried out. The fluorine-based ionic liquid can interact with the lithium residue on the surface of the ternary cathode material through hydrolysis and form a lithium fluoride coating on the surface. The coating not only can reduce the side reaction between interfaces, but also can solve the problem that the ternary cathode material is sensitive to carbon dioxide/water in air and greatly improve the cycle life and rate performance of the material. The preparation method of the invention is simple, green and environment-friendly, can significantly improve the electrochemical performance of the material, and has a broad application prospect.

The invention discloses a power fiber to the home (PFTTH) access method based on an EPON (Ethernet passive optical network), which comprises the following steps: 1) analyzing a building structure and an electrical structure of a building to be accessed; 2) determining a node position of a power fiber; 3) allocating an optical divider; and 4) allocating an ONU (optical network unit) terminal. According to the PFTTH access method based on the EPON, a data model of the PFTTH is established, a plan on the PFTTH is guided, and site operation is convenient, so that the using requirements of different regions and environments on the terminal can be met; and the PFTTH access method has the advantages of high practicability and good prospect.

The invention discloses a steel bushing inlay casting method for motor casing front and rear end covers. The method comprises the steps that 1 a steel sleeve is manufactured; 2 the steel sleeve is heated through high-frequency plasma; 3 the steel sleeve is placed into a lower mold of a low-pressure casting apparatus and positioned, molten aluminum is injected into a mold from bottom to top, and the steel sleeve is covered with molten aluminum; and 4 a separation line is formed between the steel sleeve and an end cover. The invention further discloses the motor casing front and rear end covers. Compared with front and rear end covers of a permanent magnet servo motor of an existing new energy automobile, the motor casing front and rear end covers are cast with aluminum alloy under low pressure and are formed at one time, and the motor casing front and rear end covers have smooth appearance and clear arcs; because the steel sleeve is inlaid in a bearing, the problem that a bearing deforms due to heat is solved, the hardness of a bearing position is increased, and weight is reduced by 40% compared with an integrally machined steel part or a ball iron part; and a machine base is made of the same aluminum alloy as the end covers, the aluminum alloy has a better heat dissipation effect than steel parts, the motor has an attractive appearance, and labor cost is reduced by 20%.

The invention relates to a mechanism digital lock. A variable-pitch locking dog of a mechanical digital lock consists of a main locking dog and an auxiliary locking dog, wherein the main locking dog is a lock clamping end, the main locking dog and the auxiliary locking dog are connected in a sliding way by a sliding rail and a track slot, the lock clamping end is provided with a return spring hole parallel to the sliding rail, two side surfaces of the return spring hole are provided with lock clamping plate driving pins, the auxiliary locking dog is provided with a spring stabilizing penetrating pin corresponding to the return spring hole of the main locking dog, a spring is arranged on the spring stabilizing penetrating pin and is assembled with the return spring hole, and the main locking dog and the auxiliary locking dog are provided with relative travel limiting devices. The variable-pitch locking dog has a simple structure, and adopts a two-body structure; the main locking dog and the auxiliary locking dog are sheathed together coaxially in a sliding way, and can slide relatively to realize a variable-pitch integral structure; and variable-pitch control on the main locking dog and the auxiliary locking dog can be conducted freely by a handle indoors and outdoors, therefore, the mechanical digital lock can be freely controlled to be opened and closed from the inner side and the outer side, and can be used on a door body such as an antitheft door and the like.

Disclosed are a light solar photovoltaic power generation component and a stacking method in the production technology of the component. A component body sequentially comprises tempered glass layers, a thermoplastic resin layer (EVA), a solar cell string group piece, a thermoplastic resin layer (EVA) and a back plate layer from bottom to top, preferably, reinforcing ribs are bonded on the back face of the component body, screw holes are formed in the component body, and the photovoltaic component is in threaded connection with a bearing carrier. The stacking method in the production technology comprises the steps that the upper face and the lower face of the component body are respectively and additionally provided with the tempered glass layer with the thickness of 4 mm, the two short edges of the component body are respectively and manually held, the component body rotates by 180 degrees and is exchanged up and down, the two tempered glass layers with the thickness of 4 mm are removed, and the next working procedure is executed. According to the method, the problems that in the production process, the component in the stacking step is not easy to move, and the tempered glass is easily smashed are solved, and therefore the light solar photovoltaic power generation component which has the qualified quality and is light and high in power generation efficiency is obtained.

The invention provides a novel anti-virus intelligent helmet, relates to the technical field of sanitation and health, and solves the technical problems of poor air permeability, poor leakproofness and poor comfort of an anti-virus medical mask. The helmet comprises a full-helmet type helmet body, a transparent mask, an air filtering assembly, a neck sealing assembly, an intelligent electronic assembly and a reserved external interface, the transparent mask is arranged on the front side of the helmet body in an openable manner; the air filtering assembly is arranged on the rear side of the helmet body; the neck sealing assembly is arranged at the lower part of the helmet body; the intelligent electronic assembly is arranged on the helmet body; the reserved external interface is arranged onthe front side and/or the rear side of the helmet body; after the helmet body is worn, the top and/or the side portion of the inner cavity of the helmet body are/is provided with a channel for air circulation so that air in the helmet can flow front and back. Spreading of air droplets of viruses can be effectively blocked, the same protection effect of the medical mask is achieved, a wearer cannot breathe difficultly, and the medical mask is comfortable to wear.

The invention discloses a powder metallurgy iron-based material suitable for high speed boring and a preparation method. The powder metallurgy iron-based material comprises the following raw materials in percentage by weight: 1-2% of copper, 1-2% of manganese sulfide, 0.5-1% of molybdenum disulfide, 0.3% of calcium fluoride, 0.3% of magnesium fluoride, 0.6-0.8% of graphite, and the balance of iron, wherein the iron, the copper and the graphite are added in the form of elemental powder, while the manganese sulfide, the molybdenum disulfide, the calcium fluoride and the magnesium fluoride are added in the form of compounds. The preparation method comprises the following three steps of mixing, molding and sintering heat treatment. According to the invention, the preparation method is simple and feasible, the prepared powder metallurgy iron-based material has good high-speed fine machining properties and mechanical properties and can meet requirements of an existing high-speed boring machine tool on the machining surface quality and the use of a cutter, and the use requirements of related household appliances on sliding bearing part products. Due to the application of the invention, the purpose of replacing grinding with boring can be realized, the production cost can be reduced significantly, and the machining surface quality can be improved. The invention is suitable for industrial popularization and application.

The invention relates to a multifunctional end beam mechanical arm welding clamp. The multifunctional end beam mechanical arm welding clamp is matched with universalized and standardized clamp fixtures, the clamping fixtures are rapidly replaced according to different use objects, and the rapid positioning effect and the rapid clamping effect on workpieces are achieved. The multifunctional end beam mechanical arm welding clamp is beneficial for improving the clamp use efficiency and meets the use requirements of multiple products. Based on the multifunctional end beam mechanical arm welding clamp, the design thought of the multifunctional end beam mechanical arm welding clamp can be widely applied to the machinery industry, the idea of the multifunctional end beam mechanical arm welding clamp can be widely applied to designing weld part clamps of similar structures, and as the use requirements of multiple products are met by using one clamp, the multifunctional end beam mechanical arm welding clamp has the advantages of being high in adaptability, high in use efficiency, low in composite cost ad the like. The concept of the multifunctional end beam mechanical arm welding clamp is drawn from practical work, a device, a thought and a method are provided, and the multifunctional end beam mechanical arm welding clamp has the advantages of being simple, high in practicability and the like.

The invention discloses an intelligent cold water and hot water supply system. The intelligent cold water and hot water supply system comprises a solar water heater, a hot water storage tank, a cold water storage tank and a controller. The solar water heater is composed of a water tank and solar collector pipes mounted on the water tank. An inlet of the water tank is communicated with a cold water pipe A. An outlet of the water tank is communicated with the hot water storage tank through a hot water pipe. A cold water pipe B is arranged on the cold water pipe A and communicated with the cold water storage tank. A hot water filtering device is arranged on the lower portion of the interior of the hot water storage tank. A cold water filtering device is arranged on the lower portion of the interior of the cold water storage tank. A hot water level detector is arranged on the upper portion of the hot water storage tank, and a cold water level detector is arranged on the upper portion of the cold water storage tank. A hot water quality detector is arranged on the lower portion of the hot water storage tank, and a cold water quality detector is arranged on the lower portion of the cold water storage tank. The hot water level detector, the hot water quality detector, the cold water level detector and the cold water quality detector are connected with the controller through wires. By adopting the intelligent cold water and hot water supply system, the water levels and water quality information are controlled and displayed through the controller, and intelligent water supply is realized.

The invention discloses an integrated cold water and hot water storage device. The integrated cold water and hot water storage device comprises a solar water heater, a hot water storage tank and a cold water storage tank. The solar water heater is composed of a water tank and solar collector tubes mounted on the water tank. An inlet of the water tank is communicated with a cold water pipe A. An outlet of the water tank is communicated with the hot water storage tank through a hot water pipe. A cold water pipe B is further arranged on the cold water pipe A and communicated with the cold water storage tank. A hot water filtering device is arranged in the lower portion of the hot water storage tank. A cold water filtering device is arranged in the lower portion of the cold water storage tank. The part, above the hot water filtering device, of the hot water storage tank is communicated with the part, above the cold water filtering device, of the cold water storage tank through a communicating pipe B. The bottom of the hot water storage tank and the bottom of the cold water storage tank are communicated through a communicating pipe A. A thermometer A is connected with a water mixing valve A in series, and a thermometer B is connected with a water mixing valve B in series. By adopting the integrated cold water and hot water storage device, the requirement for hot water supply or cold water supply can be met, and meanwhile the requirements for drinking water and clean water can be met.

The invention relates to the technical field of energy utilization and provides a multivariate heat recovery air conditioner system. The multivariate heat recovery air conditioner system comprises anoutdoor device and an indoor device. The outdoor device comprises a compressor and an outdoor unit arranged outdoors. The compressor is used for converting coolants from the low-pressure gas state into the high-pressure gas state. The indoor device comprises at least two indoor units arranged in different rooms indoors. The indoor units can be used for cooling or heating. The indoor units are mutually connected. The indoor units are connected with the compressor and the outdoor unit. After being output from the compressor, the coolants pass through the outdoor unit and the indoor units and then return to the compressor. The multivariate heat recovery air conditioner system can make full use of heat energy and cold energy in the different rooms where the indoor units are located, and the energy consumption is effectively reduced. There is no need to adopt a cooling water pump, a chilled water pump and a cooling tower, energy consumption is reduced, the system maintenance cost is reduced, and the multivariate heat recovery air conditioner system is more flexible in installation.

The invention relates to a geological hammer, in particular to a quick-release multi-functional geological hammer which comprises an octagonal hammer head, a hard rock hammer head, a soft rock hammer head, main taper pins, a main hammer handle, an extended hammer handle inner connector, a built-in objective lens, an extended hammer handle, a non-slip shock-mitigating rubber sleeve, a built-in prism, a main hammer handle connector, a compass bottom cover, a compass, a bottom cover, a bottom cover base, an eyepiece, an eyepiece bottom cover and an auxiliary taper pin, wherein the octagonal hammer head is mounted at the upper part of the main hammer handle through a hammer handle mounting hole; and the hard rock hammer head and the soft rock hammer head are mounted on the octagonal hammer head through the hammer handle mounting hole or mounted at the upper part of the main hammer handle through the hammer handle mounting hole. Compared with a conventional geological hammer, the quick-release multi-functional geological hammer provided by the invention is solid and durable, and can be disassembled and assembled quickly; the quick-release multi-functional geological hammer can be combined and compressed, so as to save the transportation and storage space; the hammer handle of the quick-release multi-functional geological hammer is telescopic for assembly and can be assembled into a simple cane, so as to realize simple length measurement; and the quick-release multi-functional geological hammer has the functions of the compass and a telescope, and the objective lens is flexible to use, so that quick-release multi-functional geological hammer can serve as an emergency ignition source.

The invention belongs to the technical field of vertical water stop, and particularly relates to a construction method of a vertical water stop structure of hydraulic engineering. Water stop plates adopted in the method comprise substrates, rocking bars and light baffles. First sliding grooves are formed in the upper surfaces of the substrates. Lifting plates are in sliding connection in the firstsliding grooves. Jacks are fixedly connected between the lower surfaces of the lifting plates and the groove bottoms of the first sliding grooves. The surfaces of the substrates are fixedly connectedwith fixed blocks. The positions, under the fixed blocks, of the substrates are fixedly connected with air cylinder bars. Connecting bars are connected between the air cylinder bars and the fixed blocks. The rocking bas are fixedly connected to the surfaces of the connecting bars. Second sliding grooves are formed in the upper surfaces of the lifting plates. The light baffles are in sliding connection in the second sliding grooves. By means of the construction method, the height of the water stop plates can be rapidly adjusted effectively, the requirements of water stop of different grades offlood disasters are greatly met, integrality is high, transporting and adjusting are convenient, and the process that professionals carry out professional splicing operation is not needed.