3910results about How to "Reduce processing difficulty" patented technology

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and is used for cutting off or prolonging a transmission path of transverse leakage current between two adjacent sub-pixels and ensuring the connection reliability of second electrodes of the sub-pixels. In the display panel, at least one of a non-notch part of a first partition part, a non-notch part of a second partition part and a supporting part is arranged between a first sub-pixel and a second sub-pixel which are adjacent to each other; moreover, at least one of the first sub-pixel and the second sub-pixel comprises a first protruding part and a main body part, the edge, away from the main body part, of the first protruding part comprises an arc segment, and the arc segment protrudes towards the side, away from the main body part, of the first protruding part.

The invention discloses a metal grain three-dimensional manufacturing method based on double-laser powder bed melting. The method comprises the following steps that a double-laser printing parameter and corresponding metal grain process database and a grain and part performance database are established; obtaining use performance requirements of the to-be-manufactured metal part, and obtaining grain characteristics and distribution of different areas of the to-be-manufactured metal part according to the grain and part performance database; layering and slicing the to-be-manufactured metal part to obtain a slice file; the slice file is imported into double-laser powder bed melting additive manufacturing equipment, corresponding double-laser collaborative printing process parameters are selected for different areas of the to-be-manufactured metal part according to a process database, and a printing file is formed; and the printing file is imported into double-laser same-breadth printing equipment, and the metal part to be manufactured is manufactured. According to the method, the metal grains are regulated and controlled by changing the dual-laser collaborative parameters, then integrated manufacturing of parts is achieved, and the machining difficulty is reduced while the performance of the parts is improved.

The invention relates to a vehicle-mounted radar waveguide antenna structure, which is a waveguide processing piece formed by splicing an upper waveguide processing piece (51) and a lower waveguide processing piece (52) up and down, a first waveguide transmission cavity (1), a waveguide antenna cavity structure, an electromagnetic band gap structure (3) and an electromagnetic band gap avoiding area (4) are arranged in the upper waveguide machining part (51) and the lower waveguide machining part (52). Compared with a conventionally-designed terminal open-circuit waveguide antenna, the vehicle-mounted radar waveguide antenna structure has the advantages that splicing of two layers of waveguide pieces can be achieved, complex waveguide structures are horizontally laid through reasonable design, the distribution characteristics are simplified as much as possible while splicing of the two layers of waveguide pieces is achieved, the machining difficulty is greatly reduced, and the cost is reduced. The cost is reduced while the performance of the commercial vehicle-mounted radar is improved, and the influence of waveguide piece machining errors on the performance can be reduced while the wide impedance bandwidth is kept.

The invention provides a multilayer metal medium metamaterial wave absorber and a 3D printing manufacturing method thereof.The multilayer metal medium metamaterial wave absorber comprises a plurality of structural units arranged in rows and columns, and each structural unit comprises a metal base and a plurality of hollow square ring-shaped metal-medium composite layers stacked up and down; the metal-medium composite layers are sequentially and vertically stacked on the metal base according to the side length sequence, and the sizes of the metal-medium composite layers are sequentially decreased from bottom to top. Compared with the prior art, the multi-layer metal medium metamaterial wave absorber has a high-efficiency wave absorbing effect in an ultra-wide frequency band; and the medium material and size can be flexibly selected, and the 3D printing additive manufacturing technology is utilized for manufacturing, so that the processing difficulty and the manufacturing cost are reduced.

The invention belongs to the technical field of integrated circuit packaging, and particularly relates to a resin-based gallium arsenide radio frequency chip fan-out packaging method. Comprising the following steps: using a temporary bonding support plate as a slide glass; coating photolysis temporary bonding glue on the slide glass in a spin coating mode, curing the photolysis temporary bonding glue, and then protecting the temporary bonding glue on the front surface by using a metal protection layer; bonding the back surfaces of the two heterogeneous gallium arsenide radio frequency chips to the front surface of the metal protection layer through a bonding layer; using a wafer-level plastic packaging process to package and wrap the two heterogeneous gallium arsenide radio frequency chips so as to form a first plastic packaging layer; performing laser or mechanical punching on the first plastic package layer to expose the metal protection layer so as to form a first plastic package through hole; and filling the first plastic package through hole to form a filler. According to the invention, the manufacturing cost of the chip is reduced, the miniaturization of the size of the chip is realized, the heat dissipation of the chip can be effectively enhanced by the high-heat-dissipation conductive layer on the back surface, and the performance of a system is improved.

The invention belongs to the technical field of microwave passive devices, and discloses a millimeter wave duplex power divider based on a multilayer metal gap waveguide and a working method thereof, and the millimeter wave duplex power divider comprises a common channel, a low-frequency filtering power divider and a high-frequency filtering power divider; the input port of the common channel is used for being connected with an electromagnetic wave signal source, and the output end of the common channel comprises an upper output channel and a lower output channel. Wherein the first output channel is connected with the input port of the low-frequency filtering power divider, and the second output channel is connected with the input port of the high-frequency filtering power divider; the low-frequency filtering power divider and the high-frequency filtering power divider are stacked up and down and adopt double-layer metal gap waveguide structures; wherein a fourth-order resonant cavity is arranged in the double-layer metal gap waveguide structure so as to realize a duplex power division function; functions of a duplexer and a power divider are integrated, loss caused by machining and assembling errors is greatly reduced, and low insertion loss and high isolation between channels of the duplex power divider are achieved.

The invention provides a dual-polarization tunable mode converter and mode multiplexing system based on thin film lithium niobate, and belongs to the technical field of integrated photonic devices. The lithium niobate film sequentially comprises a substrate layer, a silicon dioxide layer, a lithium niobate film layer and a silicon dioxide cladding. The Mach-Zehnder structure manufactured on the lithium niobate thin film layer is composed of an input waveguide, an output waveguide, two Y-branch waveguides and two asymmetric strip-shaped waveguides. The input waveguide and the two asymmetric strip-shaped waveguides are connected through one Y-branch waveguide, and the output waveguide and the two asymmetric strip-shaped waveguides are connected through the other Y-branch waveguide; by adding a section of wide waveguide and tapered waveguides at two ends, TE and TM fundamental modes have a phase difference of pi with the other arm after passing through a phase shift region, and the phase difference of the front and rear arms is regulated and controlled to change between pi and 0, so that the switching of output modes is realized, and meanwhile, an effect irrelevant to polarization is achieved; and the device has the characteristics of high integration level, insensitive polarization, tunability and large bandwidth.

The invention relates to the technical field of milling, in particular to a roller lead screw multi-axis milling forming device which comprises a base, a machine body, a chuck, a first linear motor, a second linear motor, a milling mechanism and a tailstock. Compared with an existing multi-axis milling forming device, the multi-axis milling forming device is provided with the positioning mechanism, the positioning mechanism has the angle detection function and the angle self-locking function, on one hand, whether the inclination angles of a plurality of sets of cutters are changed or not can be detected in real time in the working process through the positioning mechanism, and on the other hand, the multi-axis milling forming device is convenient to operate; on the one hand, the inclined angle of the cutter is prevented from being changed due to factors such as resistance when the cutter mills a workpiece, and then the machining precision is influenced, on the other hand, in the workpiece milling process, the load borne by the rotating motor can be reduced through the positioning mechanism, and then the service life of the rotating motor is prolonged.

The invention discloses a controllable mass center stamping fuel oil system for a small-sized large-maneuvering aircraft, which comprises a pressurizable vacuum fuel oil tank (1), a pressurizing air entraining pipeline (2), an oil supply pipeline (3) and a fixing unit, the pressurizable vacuum fuel oil tank (1) comprises an oil bag (11) and a plurality of air bags (12), each air bag (12) is connected with the oil bag (11) but not communicated with the oil bag (11), and the oil bag (11) is communicated with the pressurizing air entraining pipeline (2). The pressurizing air entraining pipeline (2) is communicated with each air bag (12), the oil bag (11) is connected with the engine (4) through the oil supply pipeline (3), and the fixing unit is used for fixing the pressurizing vacuum fuel tank (1) and enabling the gravity center of the pressurizing vacuum fuel tank (1) not to deviate. The pressurizable vacuum fuel tank is made of flexible materials, can be made into different shapes according to the structure of a cabin and is composed of the air bag and the oil bag, and in the using process, the air bag pressurizes and directionally extrudes the oil bag to form oil supply pressure.

The invention discloses an adjusting and mounting system for a hyperbolic single curved arc-shaped suspended ceiling and a construction method thereof.The adjusting and mounting system comprises a roof main steel structure, a transfer layer structure and a hyperbolic suspended ceiling, and the transfer layer structure comprises a hanging steel frame, a forward adjusting main keel, a hanging auxiliary keel, a keel posture adjusting assembly and a suspended ceiling hanging adjusting assembly; the two ends of the adjacent keel sections and the bottom ends of the hanging rods are adjustably connected through the keel posture adjusting assemblies, the suspended ceiling hanging adjusting assemblies are longitudinally arranged corresponding to the hanging secondary keels, the suspended ceiling hanging adjusting assemblies are transversely arranged corresponding to the suspended ceiling plate sections, and the tops of the suspended ceiling hanging adjusting assemblies are connected to the corresponding hanging secondary keels in a buckled mode. According to the method, the equal-plate unequal-joint mode is adopted, the width of the suspended ceiling plate is a fixed value, the hyperboloid is adjusted by controlling the posture of the suspended ceiling plate and the width of the plate joint, variable cross-section welding machining does not need to be conducted on the arc-shaped suspended ceiling plate, the overall hyperboloid curvature of the arc-shaped hyperboloid suspended ceiling is guaranteed, batch production is conducted on the plate, and the construction quality is guaranteed.

The invention provides a heterogeneous trench gate silicon carbide VDMOS and a preparation method thereof, and the method comprises the steps: depositing metal on the lower side surface of a silicon carbide substrate, and forming a drain metal layer; epitaxially growing on the upper side surface of the silicon carbide substrate to form a drift layer; forming a barrier layer above the drift layer, and performing etching and ion implantation to form a P-type well region, an N-type source region and a masking region; forming a barrier layer again, and etching and depositing the insulating medium to form a first insulating medium region; forming a barrier layer again, and etching to form a groove; forming a barrier layer again, etching and depositing metal, and forming a suspension gate; forming a barrier layer again, and etching and depositing the insulating medium to form a second insulating medium region; forming a barrier layer again, etching and depositing metal, and forming a gate metal layer; the preparation method comprises the following steps: preparing a source electrode metal layer, re-forming a barrier layer, etching, depositing metal, forming a source electrode metal layer, removing the barrier layer, and completing the preparation, thereby realizing the characteristics of low switching loss, high switching speed and low on-resistance.

The utility model discloses a fluid connector, and relates to the technical field of fluid communication, the fluid connector comprises at least two valve seats with communication channels and valve cores which are rotatably arranged on the opposite sides of the two valve seats and used for opening and closing the communication channels, and the valve cores are provided with communication parts; the two valve elements are provided with a restraining mechanism to limit synchronous rotation of the two valve elements, the adjacent combination faces of the two valve elements are in contact sealing, and a position state enables the communicating part to communicate with the communicating channels in the two valve seats. According to the fluid connector, only two relative rotation positions exist, namely the two valve elements rotate relative to the two valve seats correspondingly, the sealing performance of the fluid connector can be guaranteed only by forming dynamic sealing at the two positions, and therefore relative rotation between the valve elements and the valve seats can be reduced, use of sealing assemblies can be reduced, and the cost is reduced. Therefore, the overall sealing performance of the fluid connector can be improved, the sealing reliability of the fluid connector is higher, and the machining cost and the machining difficulty can be reduced.

The invention provides a surface grating surface emitting laser. The surface grating surface emitting laser comprises an N-face metal electrode layer; an N-face waveguide layer, an active layer, a P-face waveguide layer and a ridge waveguide layer are sequentially stacked on the N-face metal electrode layer, wherein the ridge waveguide layer comprises a gain region and a loss region; the P-surface metal electrode layer is arranged on the gain region of the ridge waveguide layer; and the P-surface silicon dioxide layer is arranged on the loss region of the ridge waveguide layer. According to the laser, through the characteristic that mode fields are distributed in a loss area and a gain area after PT symmetric breaking, a light field achieves surface light emitting through vertical diffraction coupling of surface gratings of the loss area, and the laser is different from a common laser structure in which gratings are completely etched in the longitudinal direction and electrodes are manufactured on the two sides. The mode gain difference is symmetrically manufactured through PT, double lobes are eliminated, a single mode is stabilized, lambda / 4 phase shift does not need to be introduced, and the process difficulty is reduced.

The invention provides a large-load industrial-grade humanoid robot upper half body module and a humanoid robot, and belongs to the technical field of robots. The large-load industrial-grade humanoid robot upper half body module comprises a head, an upper half body, a left arm and a right arm; the left side and the right side of the square chest upper body are rotationally connected with a left arm and a right arm respectively, and the square chest upper body comprises a chest structure, a waist structure, a waist rotation driving joint, a waist joint mounting part, a body binocular depth camera, a camera radar mounting part, a 360-degree laser radar, a camera mounting part and a robot battery system; the robot upper body module can be operated in multiple directions, and the flexibility and adaptability of the robot upper body module are improved; the thoracic cavity structure is stably made of plates and connected through tenons and bolts, higher rigidity and strength can be provided, and the overall weight and the machining difficulty of the thoracic cavity structure can be effectively reduced on the premise that the load weight is guaranteed.

The invention relates to a wide-frequency-band common-caliber base station antenna array based on a composite wave-transparent structure, and belongs to the field of base station array antennas in the mobile communication technology. Comprising a low-frequency antenna, a high-frequency antenna and a metal floor, the low-frequency antenna is located above the high-frequency antenna, and the orthographic projection of the low-frequency antenna and the orthographic projection of the high-frequency antenna are partially or completely overlapped on the metal floor; the low-frequency antenna is composed of three layers of composite wave-transparent structures, and when high-frequency electromagnetic waves irradiate the composite wave-transparent structures of the low-frequency antenna, the composite wave-transparent structures are excited to form a mixed wave-transparent structure; two or more resonance points can be introduced into the mixed wave-transparent structure, so that a broadband transmission window is further introduced, and the shielding effect on a high-frequency antenna caused by a low-frequency antenna is inhibited. The broadband common-caliber base station array antenna can work in two broadband working frequency bands, unit directional diagrams of the two frequency bands in the array are kept stable, and the broadband common-caliber base station array antenna has the advantages of being simple in structure, easy and convenient to design, capable of achieving array arrangement conveniently, low in interference and the like.

The invention discloses a remote diagnosis and treatment method and system based on a pulse simulator, relates to the technical field of medical care, and discloses a patient pulse acquisition module, a pulse condition parameter simulation setting module, a pulse condition dimension diagnosis module and a pulse remote diagnosis and treatment module. By arranging the patient pulse collection module, the pulse condition parameter simulation setting module, the pulse condition dimension diagnosis module and the pulse remote diagnosis and treatment module, pulse signals of a patient can be periodically simulated through the pulse simulator, and the diagnosis precision of pulse diagnosis on the patient is guaranteed; according to the method, the potential abnormal pulse condition dimension data of the patient can be preferentially diagnosed and analyzed, the pulse condition data of all dimensions does not need to be analyzed at the same time, the pulse condition data processing efficiency of pulse diagnosis of the patient can be improved, and meanwhile the pulse condition data processing difficulty of pulse diagnosis of the patient is effectively reduced.

The utility model discloses a fluid connector, and relates to the technical field of fluid communication equipment.The fluid connector comprises at least two valve seats with communication channels and valve elements rotationally arranged on the opposite sides of the valve seats and used for opening and closing the communication channels, a positioning groove is formed in one valve element, and a positioning part is correspondingly arranged on the other valve element; the positioning part extends into the positioning groove and is axially interfered and circumferentially limited with the valve core with the positioning groove after the two valve cores relatively move, and the two valve cores are circumferentially limited to synchronously rotate, so that the communicating part on the valve cores is communicated with the communicating channels on the two valve seats. Synchronous circumferential transmission is formed between the two valve elements, so that associated structures between the valve elements and the valve seat are reduced, and through the synchronous circumferential transmission between the valve elements, the movement precision of the valve elements in the on or off movement can be improved, so that the conditions of dislocation of a communicating part and the like are effectively avoided, and the service life of the valve element is prolonged. Motion errors caused by the fact that the valve seat serves as an intermediate transmission component are reduced.

The invention relates to the technical field of hemostatic clips, in particular to a chuck mechanism and a hemostatic clip. Aiming at the technical problem that the existing hemostatic clip has defects, the invention provides the chuck mechanism and the hemostatic clip, the structure of a clamping piece is improved, a three-way integrated hole is formed in the tail part of the clamping piece, and the integrated hole is matched and connected with a ball head of a metal wire, so that the clamping and closing of the clamping piece are controlled; and the mutual influence of the clamping and closing operation and the separation operation of the clamping pieces in the operation can be avoided by combining the control of the metal wire and the separation control between the metal wire and the clamping pieces. And moreover, through the design of the multi-stage locking part, the clamping piece can be locked under different clamping degrees, so that the clamping requirements under different conditions are met, and more excellent practicability and operation convenience are achieved.

The invention relates to a variable sampling start-based satellite-borne sliding spotlight SAR data processing method, which comprises the following steps of: carrying out distance direction blocking on echo data of variable sampling start, carrying out Fourier transform on sub-block data along the distance direction, multiplying by a phase compensation function, and carrying out sampling start alignment; performing two-step azimuth frequency domain aliasing removal on the sub-block data after sampling initial alignment; performing two-dimensional frequency domain matched filtering on the sub-block data after the azimuth frequency domain aliasing is removed; carrying out resampling on the sub-block data subjected to two-dimensional frequency domain matched filtering; and splicing the resampled sub-block data to obtain an imaging result of the whole imaging scene. According to the method, sampling initial alignment is carried out through a distance frequency domain azimuth time domain phase compensation function, zero padding does not need to be carried out on echo data, and the data processing difficulty is reduced; the focusing quality is improved by eliminating azimuth frequency domain aliasing, two-dimensional frequency domain matched filtering and two-dimensional frequency domain resampling.

The invention provides a semiconductor device and a manufacturing method thereof. The manufacturing method comprises the following steps: providing two wafers to be mixed and bonded; forming a bonding layer; etching the metal layer of the first wafer to enable the surface of the metal layer to be lower than the surface of the dielectric layer; forming a nano bridge metal layer on the surface of the metal layer of the first wafer; forming a nano bridge dielectric layer; bonding the first wafer and the second wafer; leading out a metal connecting piece; and applying voltage by using the metal connecting pieces so as to conduct the nano-bridge dielectric layer between the metal layers. According to the invention, the nanometer bridge structure is formed in the metal bonding area of the first wafer and the second wafer, so that metal bonding is realized by using the nanometer bridge structure under a power-on condition, metal layers do not need to be bonded by using annealing thermal expansion, and the height of the metal layers relative to a dielectric layer and the surface pattern of the metal layers do not need to be strictly controlled; and high-temperature annealing is not needed, so that the process difficulty is reduced, the performance of the device is ensured, and the problems of high difficulty and influence on the performance of the device in the existing mixed bonding process method are solved.

The invention provides a super junction device and a manufacturing method thereof. The super junction device comprises a gallium oxide substrate; the N-type epitaxial layer is positioned on the surface of the gallium oxide substrate, and a high-resistance layer is formed in the surface of one side, far away from the gallium oxide substrate, of the N-type epitaxial layer; the multi-stage grooves are located in the N-type epitaxial layer, each multi-stage groove comprises N sub-grooves arranged in the first direction, the sizes of the N sub-grooves in the second direction are not completely the same, N is not smaller than 3, the first direction is perpendicular to the plane where the gallium oxide substrate is located and points to the gallium oxide substrate, the second direction is perpendicular to the plane where the gallium oxide substrate is located, and the third direction is perpendicular to the plane where the gallium oxide substrate is located. The second direction is perpendicular to the first direction; the first P-type oxide layer covers the surface of the multi-stage groove, and the surface of the multi-stage groove comprises the bottom of the multi-stage groove and the side wall of the multi-stage groove. The super junction device is high in voltage resistance and low in process difficulty.

The invention discloses a carburizing and quenching process of a thin-wall gear and a clamping tool of the thin-wall gear. The carburizing and quenching process comprises process parameters of temperature, time, flow, carbon potential, cooling speed and the like in stages of pre-cleaning, pre-oxidation, preheating, strong carburizing, diffusion, cooling, quenching, tempering and the like. It needs to be explained that in the technical process, the purpose of reducing the heat treatment deformation quantity of the thin-wall gear is achieved by optimizing the hanging and clamping mode of the thin-wall gear and improving the temperature and time parameters during carburizing and quenching in the scheme. Besides, a clamping tool suitable for the process is designed in the scheme, so that the clamping stability of the thin-wall gear during carburizing and quenching treatment is improved, and the heat treatment deformation quantity of the thin-wall gear is further reduced.

The invention discloses a snake bone joint, a flexible joint assembly, a surgical operation arm and a surgical robot. The snake bone joint comprises two snake bone bases which can rotate based on respective pivots, the two pivots are parallel and have a constant distance, and the snake bone joint further comprises a first limiting structure and a second limiting structure which are arranged between the two snake bone bases. The first limiting structure comprises a first protrusion and a first groove which make contact with each other, the first protrusion is arranged on one snake bone base part, and the first groove is formed in the other snake bone base part. The second limiting structure comprises a second bulge and a second groove which are in contact with each other, the second bulge is arranged on one snake bone base part, and the second groove is arranged on the other snake bone base part; the pivot of one snake bone base is a first pivot, and the vertical distance between the first protrusion and the first pivot is larger than the vertical distance between the second protrusion and the first pivot. Therefore, the snake bone joint has the advantages of being high in bending precision and high in load deformation resistance.

The invention discloses a glass-plastic composite clamp for regulating and controlling the surface shape of a balsaming lens, which utilizes vacuum negative pressure to enable a lens to be completely adsorbed on an ideal surface shape of the glass-plastic composite clamp so as to regulate and control the surface shape of the adsorbed lens, and comprises an upper lens clamp and a lower lens clamp, the method has the core advantages that the glass-plastic composite clamp is used for regulating and controlling the surface shape of the lens, the surface shape of the clamp is easy to machine, and clamping and using are convenient and fast; the connecting vertical plate, the connecting transverse plate and the reinforcing ribs are used for fixing the upper lens clamp.

The invention provides a near-to-eye display optical waveguide and near-to-eye display equipment. The near-to-eye display optical waveguide comprises at least one waveguide substrate and optical gratings arranged on the waveguide substrate, the optical gratings comprise a pre-coupling-in optical grating and at least one group of diffraction optical gratings, and the diffraction optical gratings comprise a coupling-in optical grating and a coupling-out optical grating; the coupling-in grating is located behind the pre-coupling-in grating in the transmission direction of the light beams, and the coupling-in grating is arranged close to the coupling-out grating relative to the pre-coupling-in grating in the direction of the center connecting line of the coupling-in grating and the coupling-out grating; wherein the pre-coupling-in grating is used for diffracting a light beam to the coupling-in grating, the coupling-in grating is used for coupling the light beam diffracted by the pre-coupling-in grating into the waveguide substrate and transmitting the light beam to the coupling-out grating along the waveguide substrate, and the coupling-out grating is used for coupling the light beam out of the waveguide substrate. Coupling efficiency is high, energy utilization rate is high, and processing cost is low.

The invention provides a welding method and a compressor. The welding method is used for welding two parts of the compressor and comprises the following steps: providing a first part and a second part; the first component and the second component are coaxially arranged, and a welding area is formed at a seam between the first component and the second component; the welding area is welded in a laser welding mode, so that the first component and the second component are fixedly connected; wherein during laser welding, an included angle is formed between the center line of the light emitting direction of a laser beam of a laser head and the direction of a connecting line between the laser head and the axis of the first component and the axis of the second component, and the included angle is larger than zero. During welding, the included angle larger than zero is formed between the light emitting direction of the laser beam and the axis direction, pointing to the two to-be-welded workpieces, of the laser head, the width of a welding seam formed during welding is larger than the depth of the welding seam, a welding process window is enlarged, the welding process difficulty is reduced, and the welding quality of the compressor is improved.

The utility model provides a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. Wherein the battery monomer comprises a shell. The first wall is provided with a first groove, the first groove defines at least one preset pressure relief area, and the first wall is configured to be capable of cracking along at least part of the first groove when the battery monomer is subjected to pressure relief. The first wall is further provided with a second groove, the second groove and the first groove are arranged in the first direction, the second groove is located on one side of the first groove in the first direction, the first direction is perpendicular to the thickness direction of the first wall, and the second groove is configured to guide at least part of the preset pressure relief area to turn over so as to open at least part of the preset pressure relief area. According to the single battery, the effect of turning around the second groove after the preset pressure relief area is opened can be improved, so that the turning angle of the preset pressure relief area is increased, and the pressure relief area of the single battery is favorably increased.

The invention relates to the field of communication, and discloses an AIP module, an active phased-array antenna and a communication device, the AIP module comprises a substrate, an antenna, a chip and a passive device, the antenna is located on the upper surface of the substrate, the chip and the passive device are located on the lower surface of the substrate, the chip is electrically connected with the antenna, and the chip is electrically connected with the passive device. The antenna, the chip and the passive device are integrated together, wiring on a circuit board can be reduced, the wiring design is simplified, and meanwhile the cost and the design difficulty of the circuit board can be reduced.

The invention discloses a band elimination filter based on a printed ridge gap waveguide. The band elimination filter comprises a bottom dielectric substrate; a periodic mushroom unit; a metal top plate; the microstrip line transmission line is placed on the upper surface of the bottom dielectric substrate; the periodic mushroom units are uniformly arranged on the two sides of the feed network, M columns and N rows are respectively arranged on the left and right sides in the wide edge direction of the dielectric substrate, M and N are integers, M is greater than or equal to 2, and N is greater than or equal to 5. The energy in the band elimination filter is transmitted in the air gap, so that the dielectric loss can be effectively reduced, the transmission efficiency is improved, especially in a millimeter wave frequency band, the structure is simple, the processing difficulty is low, and the miniaturization and high-efficiency design of a millimeter wave system can be realized.

The invention discloses a special-shaped inner groove machining method. The special-shaped inner groove machining method comprises the following steps that initial technological parameters of a to-be-machined inner groove of a target cylindrical workpiece are obtained; according to the initial technological parameters, a corresponding machining tool is selected so that a circle of annular groove can be turned in the inner wall of the target cylindrical workpiece; switching a machining tool to roughly machine a circle of first inner groove; performing quality inspection on the first inner groove to obtain a first correction parameter; initial process parameters are adjusted, and a machining tool is switched to conduct finish machining on the first inner groove; switching a machining tool to roughly machine a circle of second inner groove; quality inspection is conducted on the second inner groove to judge whether the second inner groove meets the qualification requirement or not, if yes, finish machining is conducted on the second inner groove by switching the machining tool according to the initial technological parameters, and if not, second correction parameters are obtained; and initial process parameters are adjusted, the machining tool is switched to carry out finish machining on the second inner groove, and the machining method has the advantage that the machining precision of the inner grooves is improved.