42results about How to "Improve elimination effect" patented technology

The invention relates to the technical field of defoaming stirring, and discloses a defoaming stirring barrel for flotation and a using method thereof.The defoaming stirring barrel comprises a round barrel, a mounting frame is fixedly mounted at the top of the round barrel, a driving motor is fixedly mounted at the top of the mounting frame, a rotating shaft is rotatably mounted on the mounting frame, and the rotating shaft penetrates through the mounting frame; the bottom end of the rotating shaft is rotatably connected with the inner wall of the bottom of the barrel, an output shaft of the driving motor is fixedly connected with the rotating shaft, the defoaming device further comprises a defoaming mechanism, the defoaming mechanism comprises a rectangular groove formed in the rotating shaft, and the rectangular groove is slidably sleeved with a circular sliding plate. In the rotating process of ascending and descending of the defoaming teeth, bubbles on the slurry surface and bubbles in vortexes including slurry can be effectively eliminated, the foam eliminating effect is improved, and the situation that due to the fact that the bubbles are concentrated at the vortexes and on the liquid surface, the bubbles overflow too much and concentrate is discharged out of a barrel, waste is caused, and the concentrate sinks again is avoided.

The invention discloses milk impurity filtering equipment with a bubble removing function, and belongs to the field of dairy product processing equipment.The milk impurity filtering equipment comprises a filtering cylinder, a discharging valve is inserted into the bottom wall of the filtering cylinder, a filtering net used for filtering milk is arranged in the filtering cylinder, a feeding pipe used for pouring milk into the filtering cylinder is inserted into the top wall of the filtering cylinder, and a discharging valve is arranged on the bottom wall of the filtering cylinder. A defoaming assembly is arranged in the filter cartridge; the bubble removing assembly comprises an annular plate fixedly installed on the inner wall of the filter cylinder, and a first spring is jointly and fixedly installed between the top wall of the annular plate and the filter screen. According to the scheme, the cleaning rod is arranged, in the rotating process of the rotating rod, the cleaning rod can be driven to rotate, impurities on the top wall of the filter screen can be cleaned, in the rotating process of the cleaning rod, the filter screen can be driven to shake, and bubbles on the top wall of the filter screen can be cut in the shaking process of the filter screen; therefore, impurities and bubbles are prevented from increasing the efficiency of milk passing through the filter screen, and the effect of improving the milk filtering efficiency is achieved.

The invention provides a robust online secondary path modeling active noise control method. The method comprises the following steps: S1, carrying out primary noise signal acquisition by using a microphone; s2, weight vector updating is carried out on the primary noise, and an error signal is obtained through calculation of the updated compensation signal and the main noise; s3, updating an adaptive filtering weight in secondary path modeling by using the error signal; and S4, enabling i to be equal to i + 1, and repeating the steps S1 to S3 until the noise is controlled. Compared with other robust cost functions, the cost function provided by the invention has better tolerance and smoothness, so that the cost function can show excellent performance in the aspect of suppressing pulse interference, and in addition, in consideration that the performance of the algorithm may be reduced when the secondary path changes, adaptive secondary path modeling is adopted to supplement the algorithm.

The invention relates to the technical field of optical lenses, and discloses a large-view-field large-aperture vehicle-mounted panoramic optical lens. Comprising a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power or negative focal power and a fifth lens with positive focal power or negative focal power which are sequentially arranged from an object side to an image side along an optical axis, the sixth lens has positive focal power; the seventh lens has negative focal power; wherein the fourth lens and the fifth lens form a balsaming lens; the sixth lens and the seventh lens form a balsaming lens; the aperture value of the panoramic optical lens meets the condition that FNO is less than or equal to 1.68. According to the panoramic optical lens provided by the invention, the shapes and parameters of the plurality of lenses are optimized, so that the panoramic optical lens has the characteristics that the field angle is greater than 200 degrees, and the large aperture value is less than or equal to 1.68; and meanwhile, the system also has the characteristics of high image quality, small size, low cost, obvious ghosting elimination effect of an imaging picture and the like.

The utility model belongs to the technical field of gas film buildings, and particularly relates to a gas film structure capable of effectively reducing sound focusing in a gas film, which comprises a gas film, a steel wire rope, a sound-absorbing plate and a reinforcing rope, a plurality of hanging rings are arranged at the top of the gas film, one end of the steel wire rope is connected with the hanging rings in a hanging manner, and the other end of the steel wire rope is connected with the sound-absorbing plate in a hanging manner. The adjacent sound absorption plates are arranged in an up-down staggered mode, and the reinforcing rope is connected with a plurality of steel wire ropes in a tying and hanging mode. The plurality of sound-absorbing plates which are arranged in an up-down staggered manner can enable part of sound waves reflected by the upper sound-absorbing plate to be reflected by the lower sound-absorbing plate again, so that the sound waves are absorbed for multiple times, and the sound attenuation effect is effectively improved; a plurality of steel wire ropes can be connected into a whole through the reinforcing ropes, and the hanging stability of the acoustic board is improved.

The invention relates to the technical field of plasma electrodes, in particular to an intelligent temperature control and bubble elimination plasma electrode system and a control method thereof.The intelligent temperature control and bubble elimination plasma electrode system comprises an electrode tip, a ceramic insulating layer, an outer electrode, a miniature temperature sensor array, an electromagnetic field modulation device and an optimized electrode surface microstructure design, the outer layer is a ceramic insulating layer, the outer layer of the ceramic insulating layer is an outer electrode, the miniature temperature sensor array covers a key working area and realizes a temperature acquisition function by connecting a temperature sampling circuit in parallel, and the electromagnetic field modulation device enables the ceramic insulating layer to generate micro vibration by regulating and controlling the electromagnetic field intensity and frequency so as to promote bubble discharge. The method has the effect that the size of the plasma electrode is not increased while temperature acquisition and bubble removal are achieved.

The utility model relates to the technical field of mine blasting mining, and discloses a charging device capable of effectively inhibiting mine blasting smoke, which comprises a vehicle body, a liquid storage barrel is fixedly connected to the inner side of the upper part of the vehicle body, a water outlet pipe is fixedly connected to the inner wall of the liquid storage barrel, and a water pump is fixedly connected to the water outlet end of the water outlet pipe. A hose is fixedly connected into the inner wall of the water pump, a connecting pipe is fixedly connected to the water outlet end of the hose, a rotating disc is movably connected to the outer side of the upper surface of the vehicle body, supporting frames are symmetrically and fixedly connected to the upper end of the rotating disc, and the rotating disc rotates to enable a fan barrel to enable atomized liquid medicine to be in a wave shape in the spraying direction. The contact opportunity with harmful gas and blasting smoke particles is increased, the concentration of the harmful gas and the blasting smoke particles in a blasting site are further reduced, the smoke removal effect is improved, the opening angle of the fan barrel can be controlled and adjusted by controlling the hydraulic telescopic rod to contract, the smoke removal range can be further expanded, and the dust removal effect is improved.

The application relates to a model training method and device, an artifact elimination method and device, a medium and a product. The method comprises the following steps: acquiring training sample data, wherein the training sample data comprises a first sample artifact image and a corresponding artifact-free label image; performing down-sampling on the first sample artifact image to obtain a second sample artifact image, and obtaining a first artifact capture image based on the second sample artifact image and an initial artifact elimination network; the initial artifact elimination network is a two-stage multi-scale artifact elimination network; superimposing the first artifact capture image on the first sample artifact image to obtain a first artifact ablation image corresponding to the first sample artifact image; determining a loss function based on the first artifact ablation image corresponding to the first sample artifact image and the artifact-free label image, and iteratively training the initial artifact elimination network based on the loss function to obtain a target artifact elimination model. The target artifact elimination model can improve the elimination effect of ring-shaped artifacts in a reconstructed image.

The present invention relates to a closing surge suppression device for reactive compensation in the field of reactive compensation in distribution networks. The device is installed on the incoming line side of a capacitor group for reactive compensation, and includes a voltage transformer, a current sensor, a circuit breaker, a fast switch, a phase control device, and a controller. When the capacitor group needs to be put into operation, the capacitor group can be put into operation by first closing the circuit breaker, so that the surge generated when closing the circuit breaker is first suppressed by the phase control device; then the fast switch is closed to exit the phase control device, and the capacitor group remains in operation. In the case of presetting multiple protection branches, each protection branch is connected to a control device respectively, and the control device can realize automatic control by using the size of the closing surge current, so that a corresponding number of protection branches can be put into operation as needed in the process of eliminating the surge peak.

The present application discloses a method and a switch for processing network congestion, and the method for processing network congestion includes the following steps: judging the network state, the network state includes a non-network congestion state and a network congestion state; formulating a processing strategy, including: in a non-network congestion state, the switch maintains the current receiving and sending state of the network data flow, and in a network congestion state, the switch blocks the reception of the data receiving port and forwards the newly sent data flow to the collaborative switch for data collaborative processing; congestion processing check, sending a test data flow to the data receiving port of the switch, the switch opens the data receiving port and only receives the test data flow, and at the same time, judging the current network state based on the response of the test data flow, when the current network is in a non-network congestion state, the data receiving port is opened, otherwise the data receiving port is kept blocked until the current network is converted to a non-network congestion state. The present application also discloses a switch.

The invention relates to the technical field of emulsion explosive filling, in particular to emulsion explosive pumping and filling equipment capable of achieving rapid discharging, and the emulsion explosive pumping and filling equipment comprises a base, and a screw pump is installed at the upper end of the base; the side wall of the base is fixedly connected with a fixing ring through a vertical plate, an annular groove is formed in the inner side wall of the fixing ring, the inner wall of the annular groove is slidably connected with a conveying disc capable of rotating in a sealed mode, the side wall of the vertical plate is fixedly connected with a motor, and the side wall of a movable shaft of the motor is fixedly connected with the side wall of the conveying disc. A sliding mechanism is arranged, extrusion plates can drive sliding frames to move left and right through a plurality of first rods, the effect of eliminating bubbles in emulsion explosives is improved, the inclined distribution positions of a plurality of inclined discs are different, so that the left-right moving paths of the extrusion plates are inconsistent, the left-right moving paths of the sliding frames are inconsistent, and the bubble removing effect is improved. The effect of eliminating the bubbles in the emulsion explosive is further accelerated, and rapid conveying of the emulsion explosive is not affected.

The utility model relates to a laser projection device. Comprising a laser light source used for generating coherent light; the quantum mechanism is used for converting the coherent light into incoherent light, the quantum mechanism comprises a red quantum unit, a blue quantum unit and a green quantum unit which are used for receiving the coherent light at different moments, and quantum dots included in the red quantum unit, the blue quantum unit and the green quantum unit are different in particle size; and the shaping mechanism is used for transmitting the incoherent light from the red quantum unit, the blue quantum unit and the green quantum unit along the same direction. The red quantum unit, the blue quantum unit and the green quantum unit receive coherent light at different moments and convert the coherent light into incoherent light under the action of the quantum dots, so that interference generated by the coherent light can be effectively avoided, speckles on an image formed by the laser projection device are reduced, and the image quality is improved. And finally, the speckle elimination performance of the laser projection device is improved.

A method for efficiently and synchronously eliminating CO toxic products comprises the steps that a plurality of CO eliminating assemblies preloaded with explosive cartridges and an ascending non-return mechanism are sequentially installed in a preset blast hole, the CO eliminating assemblies embedded with detonators are located on the side close to the hole opening, a supporting base of the ascending non-return mechanism is located on the side close to the hole opening, and meanwhile a blast line is led out of the hole opening; the positioned ascending non-return mechanism is used for preventing the CO eliminating assemblies from sliding towards the hole opening direction; a plurality of sections of columnar hole sealing stemming are used for hole sealing operation; high temperature and high pressure generated at the moment of explosion of the explosive act on a CO eliminating slurry roll in the CO eliminating assembly, so that CO eliminating slurry evaporates and makes full contact with CO toxic gas to achieve CO eliminating operation, meanwhile, part of dust is taken away through part of liquid drops of the CO eliminating slurry, and synchronous dust falling and reducing operation is achieved. The method is simple in implementation process, CO can be eliminated from the source, meanwhile, the synchronous dust falling effect can be achieved, and the environmental protection effect can be effectively improved.

The application discloses a bubble eliminating device for a car front end drainage structure and an electrophoresis tank, which comprises a plurality of first connecting pipes, the liquid inlet of each of the first connecting pipes is connected with a liquid outlet on an electrophoretic liquid conveying pipe located at the front end of the electrophoresis tank; a plurality of first spray pipes, which are parallel to each other and in the same plane, the first spray pipes are arranged in an inclined upward manner, the top end of each of the first spray pipes is directed to the opening direction of the drainage structure when a car is immersed in the electrophoretic liquid, the bottom end of each of the first spray pipes is connected with the liquid outlet of each of the first connecting pipes; a plurality of first nozzles, which are of a nozzle type with a diameter gradually decreasing from the bottom end to the top end, and the bottom end of each of the first nozzles is connected with the top end of each of the first spray pipes; a connecting rod, which is connected with each of the first spray pipes; two supporting rods, which are located at the two ends of the connecting rod, the top end of each of the supporting rods is connected with the end of the connecting rod, and the bottom end of each of the supporting rods is connected with a fixing frame of the electrophoretic liquid conveying pipe. The application is helpful to improve the bubble eliminating effect in the car drainage structure in the electrophoresis process.

The invention discloses an audio power amplifier module, a plosive elimination method thereof and audio playing equipment, in the audio power amplifier module, a front-end operational amplifier unit comprises at least one operational amplifier which is connected in sequence; the tail end operational amplifier unit comprises a first operational amplifier and a second operational amplifier which are connected in parallel, the non-inverting input ends of the first operational amplifier and the second operational amplifier are respectively connected with one output end of the front end operational amplifier unit, and the inverting input ends of the first operational amplifier and the second operational amplifier are respectively connected with the other output end of the front end operational amplifier unit; the output end of the first operational amplifier is connected with the loudspeaker, and the output end of the second operational amplifier is suspended; the first end of the feedback network is connected with one input end of the front-end operational amplifier unit, and the second end of the feedback network is used for being connected with one output end of the second operational amplifier in the direct-current working point establishing time period and connected with one output end of the first operational amplifier in the power amplification time period. Jumping of electric signals at the two ends of the loudspeaker can be restrained, so that the plosive sound can be reduced, and the plosive sound eliminating effect is improved.

The present invention provides a large-diameter tongue-and-groove reinforced concrete drainage pipe production device and a process thereof, which relates to the technical field of drainage pipe processing, and includes: a first seat body, the first seat body is an I-shaped structure, and a vibration part is installed on the first seat body. A forming part and an auxiliary part are provided, and through the setting of the forming part and the auxiliary part, on the one hand, the extension of the first electric cylinder can drive the extrusion head to move downward, and the extrusion molding of the concrete can be realized through the downward movement of the extrusion head; on the other hand, when the second electric cylinder is plugged into the plug-in slot, the first electric cylinder is controlled to move downward, which can drive the second seat body to move downward, and the plug-in of the pipe fitting can be automatically formed through the extrusion of the second seat body and the concrete. In summary, both can be processed by the first electric cylinder, saving costs and realizing structural coordination.

The present invention discloses a high-strength white facing concrete and a preparation method thereof, and relates to the technical field of building materials; the concrete comprises white cement, white high-activity mineral admixture, limestone machine-made sand, limestone crushed stone, water, viscosity-reducing admixture, carbonation inhibition auxiliary agent and functional defoamer. The present invention also provides a preparation method of the above concrete. The concrete of the present invention has good aesthetic and decorative effects, eliminates the processes of coating and facing, meets the needs of low-carbon green development, and effectively solves the problems of concrete bubbles, inconsistent color, voids, cracks and poor carbonation resistance in the prior art.

The invention discloses a multi-channel multi-stage circulating CO eliminating system and eliminating method. The system is characterized in that a smoke dust filtering and dehumidifying cabin, a multi-stage CO eliminating cabin and a drainage device are connected in sequence; a flow equalizing plate, a particle filter and an air dehumidification module are sequentially arranged in the smoke dust filtering and dehumidifying cabin from left to right, a gas sensor and a first CO sensor are installed on the air inlet side, a second CO sensor is installed on the air outlet side, and a first air volume control valve and a first exhaust fan are assembled on the upper portion of the air outlet side of the smoke dust filtering and dehumidifying cabin. The multi-stage CO eliminating cabin is divided into an airflow circulating cavity and a CO eliminating cavity, a second exhaust fan, a heating assembly and a temperature sensor are arranged in the airflow circulating cavity, and a multi-stage CO eliminating assembly and a third CO sensor are arranged in the CO eliminating cavity; and a fan is arranged in the drainage device. The method comprises the following steps: providing drainage negative pressure by using the fan, sequentially carrying out filtering dry treatment on the airflow, and effectively eliminating CO in the airflow in a triple elimination mode. The system and the method can effectively eliminate CO in the gas flow.

This invention relates to the field of water pollution treatment equipment technology, specifically disclosing a multi-element ozone catalytic water pollution treatment device, including a treatment tank, a stirring rod disposed within the treatment tank, and stirring blades disposed on the stirring rod for stirring wastewater. The treatment tank is equipped with a defoaming device, which includes an mounting sleeve disposed on the stirring rod, multiple defoaming frames rotatably fitted onto the mounting sleeve, and an adjustment mechanism for adjusting the vertical rotation of the defoaming frames. The defoaming frames are inclined vertically upwards from one end near the mounting sleeve to the other end. The adjustment mechanism drives the defoaming frames to move, adjusting their inclination angle. When the stirring rod rotates, it drives the mounting sleeve and defoaming frames to rotate, thus defoaming the air bubbles on the liquid surface. This multi-element ozone catalytic water pollution treatment device can improve wastewater treatment efficiency.

This application provides a silencer, an oxygen generator, and a device with a silencer. The silencer includes: a housing; a flow-guiding silencer assembly disposed inside the housing, including: at least one longitudinal flow-guiding baffle extending axially along the housing; at least one transverse flow-guiding baffle, each transverse flow-guiding baffle penetrating the longitudinal flow-guiding baffle and extending to the inner wall of the housing; an air inlet disposed in the housing; and an exhaust outlet disposed in the housing. The longitudinal and transverse flow-guiding baffles divide the inner cavity of the housing into multiple chambers, the air inlet corresponds to one of the multiple chambers, and the exhaust outlet corresponds to another of the multiple chambers. The silencer of this application embodiment can significantly improve noise reduction without affecting gas flow efficiency.

The invention belongs to the technical field of electric appliances, and particularly relates to an air conditioner control method, device and equipment. According to the control method, device and equipment of the air conditioner, the air conditioner comprises an air conditioner body and a noise reduction module, and the method comprises the steps that a first sound spectrum and an object of the first sound spectrum when the air conditioner body operates are obtained; when the first sound spectrum is greater than a preset spectrum, namely the first sound spectrum is a noise spectrum, starting a noise reduction module to emit anti-noise sound; and a second sound spectrum during operation of the air conditioner body is obtained, and when the second sound spectrum is larger than the preset spectrum, that is, the anti-noise sound cannot effectively counteract the noise, the operation parameters of the object of the first sound spectrum are lowered. By means of the method, when the anti-noise audio spectrum cannot effectively counteract the noise, the operation parameters of the object making the noise can be further adjusted, the good noise elimination effect is achieved, and the user experience is improved.

The embodiment of the invention provides a physiological signal sensing method and device and electronic equipment, and the device part comprises one or more light emitters which are used for emitting first light; the one or more photoelectric sensors are used for detecting second light, reflected by the biological tissue, of the first light and generating corresponding first signals; the capacitive sensor is used for detecting the change of capacitance in contact with the biological tissue and generating a corresponding second signal; and the signal processing module is used for performing motion artifact elimination on the first signal according to the second signal so as to obtain a third signal. In some embodiments, the one or more photosensors are multiplexed as the capacitive sensor. The spatial correlation of the first signal and the second signal is better, and the motion artifact elimination effect is better.

The embodiment of the invention relates to the field of image detection, and discloses a tunnel surface crack image automatic detection method, device and equipment and a storage medium, and the method comprises the steps: carrying out the image preprocessing of a tunnel surface image, and obtaining a binary image, the image preprocessing comprises the filtering processing, the local image histogram stretching processing and the binary processing, the filtering processing comprises the steps of judging whether the image contains salt-and-pepper noise or not, and if the image contains the salt-and-pepper noise, sequentially performing median filtering processing and bilateral filtering processing on the image; removing residual noise in the binarized image to obtain a crack image by analyzing crack characteristics of a connected region in the binarized image; and carrying out crack refining processing on the crack image to obtain a crack skeleton image. According to the tunnel surface crack image automatic detection method disclosed by the invention, the problem that the accuracy of crack detection is influenced by noise existing in the tunnel surface image is solved, and the effect of eliminating the noise existing in the tunnel surface image can be effectively improved.

The invention discloses a laser cladding system, method and equipment capable of reducing residual stress and a medium, and relates to the technical field of laser cladding, the laser cladding system capable of reducing residual stress comprises a first movement mechanism, a second movement mechanism, a third movement mechanism and a fourth movement mechanism, the first temperature detection piece is installed on the first movement mechanism and used for detecting the temperature of an impact area, and the impact area is the area irradiated by the impact laser on the workpiece at the current moment; and a controller. According to the laser cladding system capable of reducing the residual stress, the problems that an existing workpiece subjected to laser cladding treatment has the residual stress, consequently, the mechanical performance of the workpiece is poor, and cracks are likely to be generated can be solved, the mechanical performance of the workpiece can be improved, the workpiece is prevented from generating the cracks, resources can be saved, and the residual stress eliminating effect is good.

The invention discloses an environment-friendly antistatic polyester DTY (Draw Textured Yarn) twisting oil agent and a production process thereof, and relates to the technical field of polyester DTY oil agents. The raw materials comprise the following components: 28-38 parts of soybean oil, 5-10 parts of straight-chain fatty alcohol-polyoxyethylene ether, 5-10 parts of branched-chain fatty alcohol-polyoxyethylene ether, 3-8 parts of a composite antistatic agent, 20-30 parts of water, 0.1-3 parts of a bundling agent, 0.5-2 parts of a boundary lubricant and 1-2 parts of an anti-splashing agent. The oil agent is treated by utilizing a microencapsulation technology, so that the oil agent exists in a microencapsulation form, and microencapsulation can effectively protect the oil agent from being influenced by an external environment, reduce oxidation and deterioration of the oil agent and reduce pollution to the environment, so that the lasting stability of the oil agent is improved, the oil agent is convenient to store, and the service life of the oil agent is prolonged; and meanwhile, the microencapsulated oil agent is more easily dispersed on the surface of the fiber during subsequent use to form a uniform lubricating film, so that the processability of the fiber and the product quality are improved.

The invention belongs to but is not limited to the technical field of motion control, and particularly relates to a high-order all-wheel-drive system control method and system of a networked multi-axis motion system, and the method comprises the steps: S1, analyzing a networked multi-axis motion system model with time delay, system uncertainty and nonlinearity, noise and external interference, and on the basis of giving a differential equation of the networked multi-axis motion system model, carrying out the analysis of the system uncertainty and nonlinearity; discretization is carried out after the system meets all-drive conditions, and a high-order all-drive system model is obtained; s2, designing a high-order all-drive system control law, establishing a system linearization state-space equation, and performing normalization processing on system time delay, system uncertainty and nonlinearity and external interference to obtain system lumped interference; and S3, designing an equivalent input interference estimator based on a filter to realize good estimation of lumped interference, and further designing a controller with an interference elimination function to realize that the networked multi-axis motion system with time delay, system uncertainty and nonlinearity, noise and external interference has control performance.

The present invention relates to the field of filling technology, and specifically to a bagged pesticide and herbicide filling device, including an infusion frame, a bending tube mechanism, a rotating mechanism, a rotating mechanism and a transmission mechanism. The present invention ensures that the arc plate can drive the lower end of the sealing bag to bend during the sliding process along the connecting strip through the magnetic connection between the magnetic block and the magnet, and can ensure that the liquid impacts the inner wall of the sealing bag during the filling process, avoiding direct impact on the liquid to generate a large amount of foam. When the infusion tube and the infusion head are in a vertical state, the connecting ring drives the liquid bag to be located at the bottom of the infusion head, which can buffer the liquid during filling, further reduce the generation of bubbles through the form of porous diversion, and drive the connecting teeth to rotate by moving the infusion tube upward, and finally drive the shifting block to rotate on the upper layer of the liquid through the conical teeth, and cooperate with the impact block to further eliminate a small amount of bubbles on the upper layer of the liquid, thereby improving the effect of bubble elimination.

The utility model discloses a kind of battery and bluetooth device, wherein battery includes shell, electric core and insulation structure.The shell has accommodating cavity and the mounting hole being communicated with accommodating cavity;Electric core includes electric core main body and first tab, and electric core main body includes the first pole piece and the second pole piece woundly arranged, first tab is connected to first pole piece and extends to the outside of accommodating cavity via mounting hole along first direction, and first tab includes connecting portion, and connecting portion is located at the outside of accommodating cavity, for being connected with external circuit;Insulation structure is used to make first tab and shell insulation arrangement.Therefore, when the battery of the present embodiment is installed on bluetooth device, the extension direction of first tab can be directly observed to adjust the angle of external circuit, without the need to refer to the identification outside the shell, thereby eliminating the position error of first tab due to the installation error of electric core and top cover, thereby enhancing the elimination effect of external circuit on current noise.

The utility model provides a leveling device for unreeled coiled materials, and relates to the technical field of coiled material processing equipment. The leveling device for the unreeled coiled material comprises a rack, wherein a coiled material mechanism, a guide mechanism, a pretreatment mechanism, a rolling mechanism and a leveling mechanism are sequentially arranged in the rack; the pretreatment mechanism is sequentially provided with upper straightening rollers and lower straightening rollers which are distributed in a staggered mode in the moving direction of coiled materials, an S-shaped straightening path is formed between the upper straightening rollers and the lower straightening rollers, and the upper straightening rollers and the lower straightening rollers are rotationally connected with the rack. The rolling mechanism comprises a conveying belt and a rolling piece, and the rolling piece is movably connected with the rack and located over the conveying belt. The leveling device can eliminate the internal stress of the coiled material and improve the leveling effect of the coiled material.

The invention provides a cascade H-bridge energy storage system DC side current ripple suppression and frequency boosting method, which comprises the steps of determining a target main frequency of DC side current ripple of a sub-module according to a switching frequency and a filtering cost of the sub-module; according to the target main frequency, determining frequency components of odd harmonics of modulation waves injected into the cascaded H-bridge battery energy storage system; according to the working insulation voltage of the cascaded H-bridge battery energy storage system, determining the maximum amplitude of the output voltage of the sub-module; determining the phase of odd harmonic of the injected modulated wave; according to the maximum amplitude of the output voltage of the sub-module, determining the modulation wave of the cascaded H-bridge battery energy storage system after the odd harmonic is injected; and inputting the modulation wave into which the odd harmonics are injected into a modulation algorithm, and determining a switching signal of the sub-module power device. According to the invention, the harmonic wave is injected into the modulation wave to effectively reduce and even eliminate the double frequency generation pulsating current at the DC side of the cascaded H-bridge battery energy storage system, and the frequency of the pulsating current at the DC side is improved, so that low-cost filtering is facilitated.