1305results about How to "Guaranteed work performance" patented technology

The invention discloses a distributed thermal management system for battery modules. The system comprises a plurality of battery modules. A thermal management control device is arranged on each battery module. Each thermal management control device comprises at least one temperature detection and control module, at least one heating module and at least one cooling module, wherein the temperature detection and control modules are used for detecting the temperatures of the battery modules in real time, comparing detected temperature values with a preset battery module working temperature value range, and correspondingly starting the heating modules for heating operation or starting the cooling module for cooling operation according to comparison results. According to the distributed thermal management system for the battery modules, thermal management over a plurality of batteries can be effectively realized, and the batteries can be ensured to work at normal working temperature all the time regardless of a high temperature environment or a low temperature environment, so that the overall working performance, long service life and stability of the batteries are ensured.

The present invention discloses a water-permeable concrete produced by using solid-state waste, and a preparation method thereof, wherein the water-permeable concrete comprises, by weight, 11.0-22.0 parts of cement, 6.0-11.0 parts of an active micro-powder admixture, 74.0-80.0 parts of a recycled aggregate, 0.3-0.6 part of a polycarboxylic acid water-reducing agent, 0.3-1.0 part of an interfacial binder, and 3.0-8.0 parts of water. According to the present invention, the strength and the water permeability of the concrete are improved, and the reasonable re-use of the waste is achieved; the preparation method comprises: mixing the recycled aggregate, the interfacial binder and 50% of water, carrying out first stirring, adding the active micro-powder admixture and the cement, carrying out second stirring for 15 s, adding the polycarboxylic acid water-reducing agent, carrying out third stirring, finally adding 50% of the water, and carrying out fourth stirring for 1-3 min; and the slurry easily wrap the aggregates, the adhesion is proper, the workability is easy to ensure, and the strength is high after hardening.

The invention discloses a high speed railway bridge bearing anchoring mortar material with is blended from components of, by weight: 37 to 45% of sulphoaluminate cement, 0 to 8% of Portland cement, 0 to 5% of an addition, 45 to 55% of graded river sand, 0.04 to 0.18% of a solidification retarder, 0.05 to 0.12% of an accelerant, 0.15 to 0.4% of a water reducing component, 0.05 to 0.15% of a defrothing component, and 0 to 0.1% of fiber. The material provided by the invention is specially used in anchoring and grouting of high speed railway bridge pot rubber bearings. The material has characteristics of good fluidity, high early strength, good filling properties, no strength reversing in later stage, low cost, convenient application, and the like. The material also can be applied in large equipment installation and pavement rush-repairing.

The invention discloses an integrated air conditioner and a condensed water processing method for the integrated air conditioner. The integrated air conditioner comprises an indoor water receiving plate, a drainage device connected with the indoor water receiving plate and used for leading the condensed water in the indoor water receiving plate to the outer side walls of multiple rows of condensers of the integrated air conditioner, the multiple rows of condensers used for heating condensed water on the outer side walls to at least vaporize part of the condensed water, a water tank arranged on a chassis of the integrated air conditioner and used for receiving non-vaporized condensed water on the outer side wall, and a water beating motor which comprises a plurality of water beating wheels and is used for beating the non-vaporized condensed water to the outer side walls of the condensers through the water beating wheels so as to enable the multiple rows of condensers to vaporize the non-vaporized condensed water again. By means of the technical scheme, the condensed water in the integrated air conditioner can be discharged automatically, and a user is protected from manually discharging the condensed water.

The invention relates to a non-aqueous coolant for an engine, which is characterized by comprising the following components in percent by weight: 10-80 percent of ethylene glycol, 10-80 percent of propylene glycol, 5-20 percent of polyol, 0.1-0.8 percent of phosphate-molybdate, 0.2-0.9 percent of silicate ester, 0.1-1 percent of 4-methyl 1H-benzotriazole, 0.2-0.8 percent of citric acid, 0.2-1 percent of sebacic acid, 0.1-1 percent of octanoic acid, 0.4-1.2 percent of citrate and 0.01-0.2 percent of cosolvent. The non-aqueous coolant has freezing point of -30--50 DEG C and boiling point of 130-150 DEG C, and ensures that the cold start of the engine is realized in cold weather; meanwhile, the working temperature of the engine is improved to 95-150 DEG C from the original 85-95 DEG C. The non-aqueous coolant belongs to a non-aqueous system, avoids electrochemical corrosion, and is a buffer system with pH of 7.5-9.5; and the added relevant auxiliaries have active corrosion resistance on aluminum and aluminum alloy and copper.

The invention discloses a pervious concrete special-purpose additive and a use thereof. The pervious concrete special-purpose additive comprises, by mass, 10-20% of a polycarboxylic acid water reducer, 5-25% of a polycarboxylic acid slump retaining agent, 0.5-3% of a water-retaining agent, 0.5-5% of a thickening agent, 1-5% of a delayed coagulant and 52-75% of water. A mass ratio of the additive to the gelling material in the pervious concrete is 1-2%. Ingredients of the pervious concrete special-purpose additive produce good synergism. The pervious concrete special-purpose additive guarantees water permeability, well keeps pervious concrete workability for 2h or more, improves strength after aging and realizes pervious concrete premixing production.

The invention relates to a mix proportion design and optimization method of machine-made sand self-compacting concrete. The method comprises the following steps: 1) determining the mass of coarse aggregate, the apparent density of the coarse aggregate and the bulk density of the coarse aggregate in a powder material, machine-made sand grains and unit volume concrete; 2) obtaining the use mount ofthe coarse aggregate and the volume of mortar according to performance requirements and the extra coefficient of the mortar; 3) determining a water-binder ratio according to design strength; 4) assuming the volume ratio of a net paste volume to the machine-made sand grains and calculating the mass of cement, the mass of the machine-made sand grains and the mass of mixing water; 5) adjusting the use amount of an additive in the machine-made sand self-compacting concrete according to the workability of the concrete; 6) optimizing a mix proportion meeting requirements on concrete performance according to an excellent-inferior coefficient. Compared with the prior art, the mix proportion design and optimization method has the advantages of simple steps, small calculation amount, wide application, workability and strength and the like.

The invention discloses a flexible spacecraft active fault tolerant control method based on dynamic output feedback control, which belongs to the field of spacecraft attitude control. The method comprises the steps that a dynamic equation of a flexible spacecraft attitude control system is transformed into a general state space equation; a fault model with additive sensor measurement offset is established; a fault detection and identification module composed of an unknown input observer and a filter is established; real-time detection and on-line estimation are carried out on unknown sensor fault; and a fault tolerant controller based on dynamic output feedback is designed based on acquired fault estimation information. According to the invention, when a flexible spacecraft can normally reach an expected posture in the case of an additive sensor measurement offset fault; the influence of disturbance generated by modeling uncertainty and flexible accessory is considered in a design process; and a fault diagnosis and identification module and the fault tolerant controller can be independently designed, and can be easily realized by a project.

The invention discloses a top cover of a power battery. The top cover of the power battery comprises a top cover sheet, a first terminal post, a second terminal post, a first mounting hole, a second mounting hole, an explosion-proof valve and a liquid filling hole, wherein the first terminal post, the second terminal post, the first mounting hole, the second mounting hole, the explosion-proof valve and the liquid filling hole are arranged on the top cover sheet; the first terminal post is mounted in the first mounting hole; the second terminal post is mounted in the second mounting hole; the first terminal post comprises a first matrix part and a second matrix part; a first column part is arranged between the first matrix part and the second matrix part; a first groove is formed among thefirst matrix part, the first column part and the second matrix part; a first seal ring sleeves the first column part; conductive plastic parts are arranged among the first matrix part, the first column part, the first seal ring and the top cover sheet; and a first insulating part is arranged among the second matrix part, the first seal ring and the top cover sheet. An H-shaped terminal post structure of the top cover of the power battery can achieve a good axial positioning effect on top cover parts, so the top cover of the power battery is compact and reliable in structure, dispenses with a riveting working procedure required by a T-shaped terminal post with a conductive block, reduces production cost and improves assembly efficiency.

The conductive liquid to plate directly the printed board comprises graphite 2-5%, Na2SiO3 0.5-1%, anionic surface active agent 0.5-2%, NH4OH 2-4% and water 88-96%. The product has advantages: 1. well stability. There is no hydrogen separated out during absorption to copper covered plate to ensure layer interlinkage quality; there is no chemical reaction to consume other constituents; thereby, it needs not to analyze and adjust solution to add fresh liquid for real production; 2. it is convenient to operate and maintenance and reliable; 3. it saves labor and time, controls effectively the waste water discharge, and decreases consumption and cost.

The invention relates to an on-board automatic time accounting method which endows with the long and high accuracy punctuality performance and the automatic phase modulation performance of the prior time management unit. A time difference processor uses the latest filtration result estimated in real time by a time difference EKF filter to periodically replace the original stored variable estimation value by the time difference observed quantity; on the one hand, the time difference processor broadcasts the forecast time difference for a user, and judges whether the forecast time difference at the current time enters the phase modulation section or not, if entering the phase modulation section, a second pulse generator is driven to perform the corresponding phase modulation according to the calculated phase modulation quantity through calculating the phase modulation quantity and the name phase modulation residual error, and uses the name phase modulation residual error to replace the start forecast time difference quantity and the time difference prior estimation value in an on-board time difference forecast model, thereby the on-board automatic time unification is realized. The invention can lower the degree of dependence to a land station, helps to reduce the requirements of the on-board clock performance, saves the investment and the maintenance costs of a constellation system, and improves the reliability and the safety of the constellation system.

The invention discloses a method for real-time detection of falling from bed behaviors based on depth image information. The method includes the following steps: (1) a depth sensor acquiring a depth image of the indoor scene; (2) updating a tracking region of the depth image; (3) through a continuously changing offset dimension, extracting eight neighborhood differential characteristics of each pixel in the tracking region; (4) acquiring a head region; (5) positioning the center of the head region; (6) acquiring an above the waist region; (7) optimizing head positioning; (8) determining human body;(9) extracting height characteristics; (10) detecting falling from bed: adopting a well-trained falling from bed classifier to conduct classification detection on the height characteristics to acquire a falling from bed detection result. According to the invention, the method uses a random forest classifier to acquire the head region, and optimizes head positioning, which guarantee positioning accuracy, and also uses a support vector machine to detect falling from bed, which guarantees higher accuracy and robustness.

The invention discloses an anti-vortex wearable mechanical seal comprising a rotating ring assembly, a sealing base (24) and a stationary ring assembly composed of a stationary ring (22), a stationary ring base (23), a spring (19), a plug-proof (13), a stationary seal ring (10) and a drive ring (21); the stationary ring base (23) is sleeved on rear of the stationary ring (22); the stationary seal ring (10) is arranged between the stationary ring base (23) and the stationary ring (22); the spring (19), the drive ring (21) and the plug-proof (13) are located between the stationary ring (22) and the sealing base (24); the sealing base (24) is provided with a washing water inlet (3), an inlet channel I (4) and a screw hole (15); right end surface of the sealing base (24) is coated by a rubber protection cover (6); the stationary ring base (23) is sleeved on a step of the rubber protection cover (6). The invention can ensure that the sealing ring in the whole process is not brushed to loss, which effectively ensures sealing performance of mechanical seal.

The invention provides an energy-saving control system and control method for a vibrating road roller, and the vibrating road roller. The energy-saving control system for the vibrating road roller comprises an electronically-controlled operation handle, a controller, an electronically-controlled engine, an electronically-controlled running pump, a running module and a running system, wherein the electronically-controlled engine, the electronically-controlled running pump, the running module and the running system are sequentially connected; the controller is connected with the electronically-controlled engine, the electronically-controlled running pump and the electronically-controlled operation handle; and the controller is capable of adjusting the rotational speed of the electronically-controlled engine and the displacement of the electronically-controlled running pump according to the position of the electronically-controlled operation handle. Through the energy-saving control system and control method for the vibrating road roller, and the vibrating road roller, the controller is capable of adjusting the rotational speed of the electronically-controlled engine and the displacement of the electronically-controlled running pump according to the position of the electronically-controlled operation handle, and the electronically-controlled engine is enabled to work at a good rotational speed, so that the purposes of energy saving and noise reduction of the electronically-controlled engine are realized; and meanwhile, the displacement of the electronically-controlled running pump is automatically adjusted through the controller to meet the power need of the whole system, so that the working stability and reliability of the system are ensured.

The invention discloses a liquid reservoir which comprises a lower reservoir body and a filter barrel, wherein a refrigerant inlet and a refrigerant outlet are formed at the lower end of the lower reservoir body; the filter barrel is matched with the inner wall of the lower reservoir body to form a liquid flow cavity; the filter barrel comprises a barrel wall made of a filter material, an upper liquid flow barrel and a lower liquid flow barrel; the upper liquid flow barrel and the lower liquid flow barrel are arranged at two ends of the barrel wall and communicated with each other; the lower liquid flow barrel and the liquid flow cavity are communicated with the refrigerant inlet and the refrigerant outlet respectively; and a refrigerant is at least filtered once in a process of flowing from the refrigerant inlet to the refrigerant outlet. The invention also discloses an air conditioner refrigeration system with the liquid reservoir. The refrigerant flows into the liquid flow cavity from the refrigerant inlet, further flows through the filter barrel and flows out from the refrigerant outlet, thus impurities in the refrigerant are stopped in the liquid reservoir, and an aim of filtering the refrigerant is achieved. According to the liquid reservoir, the filter barrel, instead of a non-woven cloth, is utilized as a filter part for the refrigerant, so that the own filter precision of the liquid reservoir is guaranteed, and simultaneously the flow resistance is reduced.

The invention relates to a method for controlling the hydrogen passing ratio of a vehicle fuel cell based on deep learning-prediction control, and the method comprises the following steps: S1, constructing a vehicle fuel cell electrochemical output characteristic model and an anode hydrogen supply system model; S2, designing a hydrogen passing ratio controller for the vehicle fuel cell based on deep learning-prediction control; S3, predicting a vehicle speed sequence at N moments in the future, and calculating the current of a fuel cell stack; S4, taking the current of the fuel cell stack, thereal-time output hydrogen flow and anode pressure of a flow control valve and a hydrogen circulating pump and model linear constant interference terms as the input of a model prediction control module of the hydrogen passing ratio; and setting the target hydrogen passing ratio as lambda ref, and controlling the output flow control valve and the control voltage of the hydrogen circulating pump byusing the hydrogen passing ratio model prediction control module to realize the control of the hydrogen passing ratio of the fuel cell. Working performance of the flow control valve and the circulating pump is guaranteed, power consumption of the system is reduced, and meanwhile, the damage to an exchange membrane is avoided.

An efficient wall drilling machine comprises a base, a first cylinder is arranged on the base, and a piston rod of the first air cylinder is fixedly connected to the lower side of a rotating device; fixing frames are arranged on the two sides of the rotating device, and a telescopic scale rod is fixedly connected between each fixing frame and the base; the upper end of the rotating device is connected with a fixing base, and a sliding groove is formed in the horizontal direction of the fixing base; a drilling device is slidably connected with the interior of the sliding groove, and a damping device is connected to the vertical direction of the fixing base; the damping device is connected with a second cylinder, and a piston rod of the second cylinder is connected with the drilling device;a hollow connecting pipe is fixedly connected to the upper end of the fixing base, and a scale rod is inserted into the front end of the connecting pipe; the scale rod is fixed into the connecting pipe through a locking bolt, and a vacuum suction cup is arranged at the front end of the scale rod. The drilling machine is reasonable in design, the working efficiency can be effectively improved, thedrilling positioning precision and quality are improved, and the flexibility and the safety are achieved.

The invention provides a comprehensive system of a horizontal two-way earthquake simulation shaking table. The comprehensive system consists of a table surface unit of the well-shaped rail beam-stiffened horizontal two-way earthquake simulation shaking table, a support operation mechanism unit of the horizontal two-way earthquake simulation shaking table and a vibration exciter connecting device of the horizontal two-way earthquake simulation shaking table; the table surface unit has light self-weight and large effective load, the large internal damping causes small local vibration and low noise; the vibration exciter connecting device of the shaking table has no geometric coupling, easy ensured rigidness of a connector and small extra work of the vibration exciter; the support operation mechanism unit carries a heavy model test piece, the table surface of the table surface of the shaking table can slide in any direction on the horizontal plane, the operation friction is small and the horizontal displacement ability of the shaking table is not constrained by overturning moment. The maximum displacement which can be achieved by the horizontal two-way earthquake simulation shaking table is that X is equal to plus or minus 300mm and Y is equal to plus or minus 300mm, and the horizontal two-way earthquake simulation shaking table has simple structure, low cost, small energy consumption, high energy efficiency, easy upgrade and ability of realizing the further development of loading and displacement abilities.

The invention relates to a low cementitious material self-compact concrete with rice husk ash as an internal curing agent. The low cementitious material self-compact concrete comprises Portland cement, rice husk ash, slag micro-powder, a modified polycarboxylate superplasticizer and a filler. The self-compact concrete has the characteristics of low consumption of Portland cement, good workability, stable later-stage strength development, low cost and substantial environment benefit. Compared with concretes in the prior art, the low cementitious material self-compact concrete has the advantages of self-compact concrete performance guaranteeing, reduction of the high burden and treatment cost of unused rice husk ash, slag micro-powder and other agricultural and industrial solid wastes to environment, and good application prospect.

The invention discloses a dual-clutch structure which is used for solving the problems that the processing process of a main hub is complex, the assembling quality is difficult to guarantee and the structure is not compact. The dual-clutch structure comprises an input shaft, a clutch front cover, a main hub, an outer clutch, an inner clutch, an output shaft I and an output shaft II, wherein one end of the improved input shaft is connected to an engine shaft, while the other end of the input end is connected to the clutch front cover; the clutch front cover is assembled with an outer clutch element; the main hub is in an integral structure and is sleeved outside the output shaft II by means of clearance fit; the outer and inner clutches are arranged on the corresponding elements of the main hub; the output shaft I is assembled with the outer clutch element; and the output shaft II is assembled with an inner clutch element. As the main hub of the double clutches is designed to be in the integral structure, the number of the main hub parts and the manufacturing cost of the double clutches are reduced, the working performance of the double clutches is guaranteed, and the axial sizes of the double clutches are reduced, thereby being beneficial for the space distribution of the integral car.

The invention relates to a Monte Carlo simulating and optimization design method of an underwater laser active imaging system. According to the scattering and absorbing characteristics of different water qualities, for the underwater laser active imaging system, parameters and performance of the system are correspondingly optimized and designed through a Monte Carlo simulating method, and therefore the imaging contrast of reflection light spots or light strips is improved, and the implementation of a system measuring principle is ensured. The method includes the steps of establishing a three-dimensional entity model according to the specific imaging system, and completing the tracking and statistics of the whole movement trajectory of photons through the movement of iterative photons through the inherent characteristics of a defined light source and a defined water body and a target surface scattering model. According to the method, the synchronous scanning triangular ranging underwater laser active imaging system serves as an embodiment; by means of the method, the contrast of a scanning light spot reflection image is obtained; by changing system parameters and repeating the simulation, a corresponding relation curve is obtained; finally, through comprehensive consideration, system optimization design parameters are determined.

The invention discloses a curing agent in ceramsite carrier concrete. A preparation method of the curing agent comprises the following steps that an acrylic acid solution, 2-acrylamide-2-methacrylic acid, initiators and crosslinking agents are uniformly mixed to prepare a reaction solution a; an etherificated sodium alginate solution, an acrylamide solution, initiators and crosslinking agents areuniformly mixed to prepare a reaction solution b; ceramsite is sequentially soaked in the reaction solution a and the reaction solution b, and is sequentially subjected to microwave treatment. Firstly, the ceramsite is used as a carrier; the polymerization of water absorption resin is performed inside and outside the ceramsite; meanwhile, a hole-inside hole-outside two-step method is used; the building of polymers with different water absorption rates inside and outside holes is realized; the prepared curing agent in the ceramsite carrier concrete can greatly improve the humidity inside the concrete; the early-period reduction and shrinkage effect of the concrete is obvious; meanwhile, the curing agent in the ceramsite carrier concrete has the advantages that the water absorption and waterrelease rate is slow; the use performance such as concrete strength is favorably guaranteed; important application and promotion values are realized.