898results about "Asynchronous induction motors" patented technology

The invention relates to a high-temperature superconducting flywheel energy storage device and a control method of the high-temperature superconducting flywheel energy storage device. The problems that in the prior art, an electro-magnetic inductor motor has large standby loss, and the suspension force cannot be adjusted can be solved through the high-temperature superconducting flywheel energy storage device and the control method of the high-temperature superconducting flywheel energy storage device. The high-temperature superconducting flywheel energy storage device comprises a flywheel rotor. A stator core; a first high-temperature superconducting excitation coil; the stator iron core, the first high-temperature superconducting magnet exciting coil and the second high-temperature superconducting magnet exciting coil are arranged around a rotating shaft of the flywheel rotor in the circumferential direction of the flywheel rotor, and the first high-temperature superconducting magnet exciting coil and the second high-temperature superconducting magnet exciting coil are arranged on the two sides of the stator iron core in the extending direction of the rotating shaft respectively; the permanent magnet surrounds the rotating shaft and is arranged on one side of the flywheel rotor in the extending direction of the rotating shaft; and the control coil is arranged around the rotating shaft, and the control coil is arranged on the same side as the permanent magnet relative to the flywheel rotor.

The present invention relates to the technical field of electric motors, and specifically relates to a three-phase direct-current brushless electric motor, comprising: an electric motor housing, an inner shell, a rotating shaft, a rotor, a stator, a Hall sensor, and a circuit protection device, wherein the inner shell is fixedly mounted at the upper end of the electric motor housing; the rotating shaft is rotatably connected to the electric motor housing; the rotor and the stator are mounted inside the inner shell; and the Hall sensor is rotatably fitted with the rotating shaft. The circuit protection device is located above the rotor; during operation, when the rotating shaft is stuck due to a fault, or when there is an overload, the circuit protection device controls the disconnection of a circuit, thereby realizing the power-off self-locking of the electric motor by means of a load control module, thus avoiding the demagnetization of a rotor permanent magnet at a high temperature caused by heating of the electric motor, and avoiding affecting the rotation speed and normal use of the electric motor.

The invention discloses an induction motor, a compressor and refrigeration equipment, and relates to the technical field of motors, the induction motor comprises a stator component and a rotor component; the stator component comprises a stator core, the stator core comprises a stator punching sheet, the stator punching sheet comprises a stator yoke and a plurality of stator teeth which are arranged on the inner side of the stator yoke and are arranged at intervals in the circumferential direction of the stator yoke, and every two adjacent stator teeth form a stator groove; the rotor component is arranged on the inner side of the stator component, the rotor component comprises a rotor core, the rotor core comprises a rotor punching sheet, and the rotor punching sheet is provided with a plurality of rotor grooves which are arranged at intervals along the circumferential direction of the rotor punching sheet; wherein the groove height of the rotor groove is # imgabs 0 #, the radius of the rotor punching sheet is # imgabs 1 #, and the groove height of the stator groove is # imgabs 2 #; the thickness of the stator yoke is # imgabs 3 #, and the distance from the bottom of the rotor slot to the center of the inner circle of the rotor punching sheet is # imgabs 4 #; and the formula is as follows: 1.65 # imgabs 5 # 3.3. According to the induction motor, the efficiency of the induction motor can be improved.

A coaxial asynchronous motor drive system, including a speed reducer, an electric motor and a main housing, and further including a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the range per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

An induction motor rotor includes a magnetic metal core; and an electrically conductive metal contiguous with the magnetic metal core. The electrically conductive metal includes rotor bars extending along the magnetic metal core and end segments formed onto opposite ends of the rotor bars. Each of the end segments includes a base section extending a first axial distance from the magnetic metal core and a protrusion extending a second axial distance from the magnetic metal core. The second axial distance is greater than the first axial distance. The induction motor rotor also includes a metal ring positioned on an outer circumferential surface of each of the end segments to prevent the end segments from separating from the rotor bars.

Examples are disclosed that relate to an electric machine (102) that achieves independent speed, variable frequency power generation and has increased power density, efficiency, reliability, and reduced complexity relative to conventional electric machines. In one example, an electric machine (102) includes a stator (200), a first stationary winding (202) coupled to the stator (200), a second stationary winding (204) coupled to the stator (200), and a rotor (206). The second stationary winding (204) includes a plurality of winding segments (218) corresponding to a number of phases of power of the electric machine (102). The rotor (206) extends through the stator (200) and the second stationary winding (204). The rotor (206) includes a plurality of rotor segments (220.1, 220.2, 220.3). Each rotor segment (220) of the plurality of rotor segments (220.1, 220.2, 220.3) includes a plurality of pole lobes (222.1, 222.2, 222.3) that extend radially from the rotor segment (220). Two or more pole lobes (222) of each rotor segment (220) are located on opposing sides of a corresponding winding segment (218) of the second stationary winding (204).

The embodiment of the invention discloses a modular bearingless doubly salient electro-magnetic motor, relates to the technical field of bearingless doubly salient electro-magnetic motors, and can further improve the fault tolerance performance of the modular bearingless doubly salient electro-magnetic motor. The invention comprises a body structure of the modular bearingless electro-magnetic doubly salient motor and an annular direct current winding control method for suspension control of the modular bearingless electro-magnetic doubly salient motor. Structural optimization of a traditional bearingless electro-magnetic doubly salient motor is achieved, coupling between windings of the traditional bearingless electro-magnetic doubly salient motor is reduced, meanwhile, the modular topology is beneficial to physical isolation and electric, magnetic and thermal isolation of the motor windings, and the utilization rate of residual healthy windings is high when a fault occurs. The topological structure can be used for bearingless electro-magnetic doubly salient motors with other stator and rotor pole numbers.

The invention discloses a shaded pole motor, and relates to the technical field of motors, and the shaded pole motor comprises a stator assembly, a rotor assembly disposed in the stator assembly, and a support assembly covering the rotor assembly. The support assembly comprises a support body, a pressing claw and a pressing disc. The pressing claw and the pressing disc form an elastic piece based on overlapping riveting. An installation part is arranged in the middle of the support body, a wool felt and an installation step structure are arranged in the installation part, the elastic piece is correspondingly embedded between the installation step structure and the wool felt, and the elastic piece and the wool felt are matched to form a limiting space for containing a bearing. The mounting step structure is arranged in the bracket main body and matched with the wool felt to realize the limiting mounting of the elastic piece, so that the bearing mounting area is formed under the matching of the elastic piece and the wool felt, the assembly accuracy of the elastic piece and the bearing is improved, and the connection stability of the internal structure of the shaded pole motor is effectively improved.

A rotor cooling structure includes a turbine blower structure provided on first and second sides of a rotor for an induction motor; a refrigerant passage including a plurality of refrigerant passage inlet openings provided on a bottom surface of the turbine blower structure and a plurality of refrigerant passage outlet openings provided at an axial center of the rotor, which fluidically communicates with the refrigerant passage inlet openings and the refrigerant passage outlet openings and is provided along conductor bars of the rotor; and a plurality of micro groove patterns that hold the refrigerant passage outlet openings and are provided on both axial sides of the rotor on an external periphery of the rotor.

The invention relates to an electric rotary machine (1), comprising a stator (2) having a hollow cylindrical magnetizer, in particular an axially layered laminated core (11), which has grooves (31) in the region of the inner sleeve surface of the laminated core, which grooves are provided with electrical conductors (8), the electrical conductors (8) being in electrical contact on the end faces of the magnetizer of the stator by means of at least one short-circuit ring (9), the electrical conductors (8) are electrically contacted on the other end side of the magnetizer by means of a plurality of inverter modules (6) for actuating the respective electrical conductors (8); a rotor (3) designed as a squirrel-cage rotor, the rotor being spaced apart from the stator (2) by an air gap (23) and having a short-circuiting ring (24) on an end face of the rotor, the conductor (8) and / or the inverter module (6) and / or the short-circuiting ring (9) of the rotor (3) and / or the stator (2) being coolable at least in some regions by means of a gaseous medium, in particular air.

The invention provides a high-speed induction motor solid rotor structure and a motor, the rotor structure comprises an integrated conductive and magnetic conductive rotor and a rotating shaft, the surface of the rotor is provided with two groups of grooves, any groove in any group and all grooves in the other group are arranged in a staggered manner along the circumferential direction of the rotor, and the two groups of grooves are arranged at intervals along the axial direction of the rotor. Distances are reserved between the far ends of the two groups of grooves and the close end faces of the rotor. The motor comprises the solid rotor structure. The two sections of non-penetrating rectangular straight grooves are axially formed in the surface of the rotor, so that the equivalent impedance of the rotor part is increased, the penetration depth of an air-gap magnetic field in the rotor is increased, the torque output capacity of the motor is improved, and meanwhile, the eddy current strength of the surface of the rotor is weakened.

The invention discloses an explosion-proof three-phase asynchronous motor which comprises a shell, a front end cover, a rear end cover, a stator, a rotor and a rotating shaft, wherein the stator, the rotor and the rotating shaft are arranged inside the shell. The radiating fins are arranged on the outer wall of the machine shell, the reciprocating lead screw transmission mechanism is connected through the supporting frame, the cleaning plate is driven to do reciprocating motion along the guide rod, dust on the radiating fins is automatically removed through the arc-shaped brush plate, and efficient radiating is ensured. The cooling box is arranged below the machine shell, the cooling box and the machine shell are designed to share the wall, an internal cooling pipe conveys cooled gas into the machine shell through a gas circulation system, the temperature is forcibly reduced, combustible gas is dispersed, and the anti-explosion safety is improved. The eccentric wheel on the rotating shaft drives the piston pipe to reciprocate, one-way flow of gas is achieved in combination with the non-return cover plate structure, and active gas circulation is formed in cooperation with the annular gas inlet channel and the gas outlet hole. The motor integrates self-cleaning heat dissipation and gas circulation cooling functions, adapts to high-temperature, high-humidity and closed environments, effectively reduces energy consumption, prolongs the service life of the motor, and is suitable for flammable and explosive places.

The utility model discloses an induction motor, compressor and refrigeration equipment, relates to the motor technical field, the induction motor comprises a stator part, a stator iron core comprises a plurality of stator punching sheets laminated along the axial direction of the stator iron core, each stator punching sheet comprises a stator yoke and a plurality of stator teeth arranged on the inner side of the stator yoke and arranged along the circumferential direction of the stator yoke at intervals, a stator slot is formed between every two adjacent stator teeth; wherein any two intersection points exist between a line segment of the stator punching sheet passing through the circle center and the outer contour of the stator punching sheet, the maximum value of the line segment between any two intersection points is L1, the minimum value of the line segment between any two intersection points is L2, and L1 / L2 is greater than or equal to 1.02 and less than or equal to 1.2, the tooth width of the stator teeth is W1, the maximum slot width of the stator slots is W2, W2 / W1 is greater than or equal to 2.6 and less than or equal to 3.6, the minimum stator yoke width of the stator punching sheet is Y1, the inner diameter of the stator punching sheet is L3, and Y1 / ((L1-L3) / 2) is greater than or equal to 0.3 and less than or equal to 0.45. According to the induction motor, the efficiency of the induction motor can be improved, and the calorific value is reduced.

A method for determining temperature of a chip, includes generating a first voltage and a second voltage using a pair of bipolar-junction transistors, and generating a third voltage using another bipolar-junction transistor. When a most recent bit of a bitstream is a logic-zero, the difference between the first and second voltages is sampled using a switched-capacitor input-sampling circuit, and a difference between the first and second voltages is integrated, to produce a proportional-to-absolute-temperature voltage. The proportional-to-absolute-temperature voltage is quantized to produce a next bit of the bitstream. When the most recent bit of the bitstream is a logic-one, the third voltage is sampled using the switched-capacitor input-sampling circuit, and the third voltage is integrated, to produce a complementary-to-absolute-temperature voltage. The complementary-to-absolute-temperature voltage is quantized to produce a next bit of the bitstream. The bitstream is filtered and decimated to produce an output code representative of the temperature of the chip.

The invention relates to a single-phase asynchronous capacitor motor, which comprises a stator part, a rotor part and a motor rotating shaft, the capacitor motor further comprises a casing, the casing comprises a front casing wall, a rear casing wall and a ventilation rear cover, the front end part of the motor rotating shaft is coupled in the front casing wall through a front bearing, and the rear end part of the motor rotating shaft is coupled in the rear casing wall through a rear bearing. The rear end part of the motor rotating shaft is coupled in the rear shell wall through a rear bearing, the rear bearing comprises an outer bearing sleeve, an inner bearing sleeve and a bearing roller, the inner bearing sleeve is fixedly sleeved on the rear end part of the motor rotating shaft, the inner bearing sleeve comprises an inner bearing ring pipe and a connecting disc body, and the inner bearing ring pipe is sleeved on the inner bearing ring pipe. The connecting disc body is fixedly connected to the outer end of the inner bearing ring pipe, the coaxial cooling fan is connected to the connecting disc body, when the inner bearing sleeve rotates, the connecting disc body and the motor rotating shaft coaxially and synchronously rotate, and the connecting disc body drives the coaxial cooling fan and the motor rotating shaft to coaxially and synchronously rotate.

An electric motor comprises: a stator; a rotor shaft having a hollow interior and a rotor axis with at least one inlet into the hollow interior and at least one outlet from the hollow interior to an outer diameter of the rotor shaft; a rotor comprising: a rotor body having a first end structure and a second end structure opposite each other along the rotor shaft, wherein the second end structure has an outlet to an outside of the rotor; and an axial cooling channel extending through the rotor body; and wherein the electric motor is configured so that a fluid is centrifugally driven by rotation of the rotor to enter through the inlet of the rotor shaft, exit through the outlet of the rotor shaft, enter the axial cooling channel, and flow to the outside of the rotor through the outlet of the second end structure.

A vehicle drive system includes a motor that has a cylindrical stator and a cylindrical rotor provided in the stator to be coaxially rotatable with a center axis of the stator and drives a front wheel of a vehicle by rotation of the rotor. The rotor has a cage section and a permanent magnet section provided on an inner circumferential side of the cage section and formed of a rare earth magnet. The vehicle drive system further includes a controller that executes a synchronous operation mode when a temperature of the permanent magnet section is lower than a predetermined temperature, and executes an asynchronous operation mode when the temperature of the permanent magnet section is equal to or higher than the predetermined temperature. In the synchronous operation mode, the rotor is rotated by using a magnetic force of the permanent magnet section.

The energy-saving self-excitation three-phase asynchronous motor comprises a stator, a rotor, an end cover and a supporting frame, the stator comprises a stator iron core, a stator winding and a machine base, the rotor comprises a rotor iron core, a rotor winding and an output shaft, the end cover is installed at the front end of the machine base, and the supporting frame and a fan cover are installed at the rear portion of the machine base. The supporting frame and the fan cover are both of a front-back penetrating hollow structure, the end cover and the supporting frame are jointly and rotationally connected with a horizontal output shaft, a ventilation channel is arranged between the end cover and the machine base, and the ventilation channel is communicated with an inner cavity of the machine base. The rear supporting piece is fastened with the fan cover or the limiting frame, the rotating direction of the turbofan can be changed on the basis that the rotating direction of the output shaft is not changed, and therefore the air circulation direction from front to back and the air circulation direction from back to front are formed, the ventilation and heat dissipation effects are guaranteed, and the service life of the turbofan is prolonged. And the fan cover and the ventilation channel can be washed and blown repeatedly, so that the trouble of cleaning is reduced.

To increase an efficiency of conversion into a thermal energy while downsizing a device.SOLUTION: An electrothermal conversion device (10) includes: a rotary heat generator (20); and an electric motor (11) that rotates a rotor (22) via a shaft (12). The rotary heat generator includes: a stator (21) configured by holding a stator winding (26) in a cylindrical stator core (25) along a rotation direction; the rotor (22) provided with a heating conductor (32) disposed inside the stator (21); and a flow path (36) formed between the stator and the rotor. A heat medium (M) flows through a flow path. The heating conductor is formed of a massive soft magnetic conductor.SELECTED DRAWING: Figure 2

The invention discloses a pole-changing multi-speed three-phase asynchronous motor with a dust-free temperature control function, and relates to the field of pole-changing multi-speed three-phase asynchronous motors. The pole-changing multi-speed three-phase asynchronous motor comprises a motor body, a plurality of heat dissipation copper plates are arranged on the outer surface of the motor body at equal intervals in the circumferential direction, a sealing cylinder is arranged on the motor body, and a conical partition plate is arranged in the sealing cylinder; and the interior of the sealing cylinder is divided into two independent cavities by the partition plate. Through driving of the output shaft of the motor main body, the functions of efficient dust removal, heat dissipation and automatic reset are achieved, the scraping frame collects dust on the filter plate into the discharging groove, and secondary diffusion is prevented; the turbine rotates to generate negative pressure, air flow is promoted, heat is taken away, and effective cooling is achieved; the vibration design enhances the dust removal effect; when operation is stopped, all the parts automatically reset under the action of the springs, structural stability is guaranteed, equipment operation efficiency is improved, the service life is prolonged, operation is convenient, and environment friendliness and reliability are achieved.

The utility model provides an asynchronous motor with grooves in the outer circumferential surface of a rotor, a power assembly and a vehicle. The asynchronous motor comprises a motor shaft, a rotor and a stator, the stator coaxially sleeves the periphery of the rotor, the rotor is used for being in transmission connection with the motor shaft, the rotor comprises a rotor iron core and a sleeve, the outer circumferential surface of the rotor iron core comprises a plurality of grooves, the notch of each groove faces the inner circumferential surface of the stator in the radial direction of the asynchronous motor, and each groove is used for accommodating a rotor guide bar. The rotor conducting bar is used for cutting magnetic induction lines of the stator to generate induced current, and the sleeve is used for closing notches of the multiple grooves. Leakage inductance of the inner rotor of the asynchronous motor can be reduced so as to effectively improve the overall power performance of the asynchronous motor.

A system includes an induction motor configured to drive an electric submersible pump (ESP). The induction motor includes a one or more rotors disposed about a rotational axis, and a plurality of bearings disposed about the rotational axis. Each bearing of the plurality of bearings is disposed axially between a pair of rotors of the one or more rotors. The induction motor further includes one or more stators disposed about the one or more rotors.

A rotor for an electric machine of a motor vehicle is provided, which can be used as a rotor of the electric machine, which is rotatably mounted with respect to a stator of the electric machine, wherein the rotor has a plurality of recesses distributed along a circumferential direction and extending along a longitudinal direction, wherein the geometric shapes of the cross sections of the recesses differ from one another along the circumferential direction, wherein, with respect to the assembled state of the electric machine, the recesses are each closed with respect to a radial direction towards a side of the rotor which faces the stator.

The invention relates to the field of motors, provides a rotor and a manufacturing method thereof, is applied to an asynchronous induction motor, and comprises a rotor core, guide bars and end rings. A plurality of tooth grooves are formed in the circumferential direction of the rotor iron core, and the two ends of each tooth groove penetrate through the two end faces of the rotor iron core in the axial direction respectively; the conducting bars are independently processed and formed, the conducting bars are inserted into the tooth grooves, and the two ends of each conducting bar protrude out of the two end faces of the rotor iron core in the axial direction respectively; the two end rings are respectively arranged at two ends of the rotor core in the axial direction, and the two end rings are respectively connected with two ends of each conducting bar into a whole. The guide bars forming the mouse cage are manufactured independently and are connected into a whole through the end rings at the two ends to form a complete mouse cage structure. A traditional casting process often causes pores in a casting. The porosity can be effectively controlled by separately casting the conducting bars and the end rings.

Disclosed are various embodiments for switched reluctance machines having a rotor comprising a plurality of rotor core assemblies configured to form a reluctance torque tunnel having at least a first reluctance tunnel segment and a second reluctance tunnel segment and a stator having a plurality of coils configured to form a coil winding assembly, the coil winding assembly positioned within the reluctance torque tunnel, such that at least one of the plurality of coils is surrounded by the first reluctance tunnel segment or the second reluctance tunnel segment, alternatively the rotor may be the coil winding assembly and the stator may be the reluctance torque tunnel.

The invention relates to the field of induction motors, and provides a squirrel-cage adjustable magnetic ring induction motor, which comprises a stator, a squirrel-cage adjustable magnetic ring and a double-squirrel-cage rotor, the stator is provided with a stator slot and an armature winding and is used for cooperating with a rotating magnetic field to generate electromagnetic torque; the mouse cage magnetism adjusting ring comprises a plurality of single mouse cage rings and a magnetism adjusting ring iron core; the magnetic field adjusting ring iron core is provided with a magnetic field adjusting ring iron core groove, and the mouse cage magnetic field adjusting ring is embedded in the magnetic field adjusting ring iron core through the magnetic field adjusting ring iron core groove and used for inducing current and converting the number of pole pairs of a magnetic field through magnetic field modulation. The double-squirrel-cage rotor comprises an inner squirrel cage and an outer squirrel cage, the inner squirrel cage is arranged on the innermost layer of the motor and is composed of an inner-layer rotor iron core and squirrel cage strips, and the outer squirrel cage is arranged between the squirrel cage magnetic adjusting ring and the inner squirrel cage, is composed of an outer-layer rotor iron core and squirrel cage strips and is used for carrying out back electromotive force and current induction on the modulated magnetic field; therefore, electromechanical energy conversion is completed. According to the invention, through the squirrel-cage adjustable magnetic ring and the double-squirrel-cage rotor structure, larger output torque and power factor are provided.

A dynamoelectric machine includes a shaft, a rotor arranged fixedly on the shaft for conjoint rotation, and a slip ring system enabling a rotor winding system to be contacted electrically and including a slip ring body having slip rings arranged spaced-apart axially behind one another and assigned to an electrical phase. The slip ring body is connected fixedly to the shaft for conjoint rotation and has between an inner side thereof and the shaft a section which forms an axially open cavity on both skies. In a region of the slip ring system, the shaft is hollow with a hollow shaft portion assigned to the slip ring system for routing feed lines to the rotor winding system. Recesses are provided on the cavity axially on an inside and axially on an outside for introducing a cooling medium flow axially into the cavity and discharge thereof into an outlet region.

The invention relates to the technical field of electromagnetic coils, and discloses a laminated tooth-shaped coil winding based on interlayer phases and a design method of the laminated tooth-shaped coil winding. According to the tooth-shaped coil, the number of effective edges of the winding is remarkably increased through a multi-branch parallel connection mode, and the end portions are reduced; meanwhile, gaps of the concave tooth portion and the convex tooth portion of the tooth-shaped coil provide enough space for winding assemblies such as an iron core, a heat dissipation pipe, an insulating material, a structural material and a sensor, forming of an integrated winding with magnetism gathering, heat dissipation, insulation, structural strength and sensing control is facilitated, and application and popularization of the type of winding are greatly facilitated through the design method.

The present invention relates to the field of magnetic levitation motors, and particularly to a high-speed magnetic levitation asynchronous motor. The motor includes a housing, a stator, a motor shaft, a radial bearing, and an axial bearing; the motor shaft includes a first shaft section, two second shaft sections respectively located outside both ends of the first shaft section, and two third shaft sections respectively located outside both ends of the second shaft sections; a permanent magnet is arranged inside the first shaft section, a copper-clad layer is arranged on the surface of the first shaft section, and the first shaft section is connected to the driving end of the stator; the second shaft section and the third shaft section are respectively connected to the supporting end of the axial bearing and the supporting end of the radial bearing. By arranging a copper-clad layer on the surface of the rotor, the motor does not need to be provided with a sheath, thereby improving the rotational speed and power of the high-speed motor and the heat dissipation performance of the motor.

The utility model relates to the technical field of new energy high-altitude operation parts, and discloses a series excitation three-phase asynchronous drive motor stator assembly, which comprises a flat wire coil formed by winding a bare flat wire, interlayer insulation paper is arranged between layers of the bare flat wire, the bare flat wire comprises a flat wire end, and the flat wire end is provided with an insulation layer. And wrapping cloth is arranged on the surfaces of the four groups of flat wire coils. According to the series excitation three-phase asynchronous drive motor stator assembly, through the flat wire coil formed by the bare flat wire in the winding mode shown in the attached drawing, when a winding machine carries out winding processing on the stator assembly, winding equipment can complete winding at a time, secondary processing is not needed, time and labor are saved, the production efficiency is improved, and the production cost is reduced. Meanwhile, wrapping equipment can conduct wrapping processing on the flat wire coil conveniently, stranded wires are welded conveniently, and finally, the first soft red copper stranded wires and the second soft red copper stranded wires are connected with the designated flat wire ends respectively in a flexible connection welding mode, so that assembly in the subsequent procedure is facilitated, and the production efficiency is improved.