35results about How to "No power interruption" patented technology

The invention discloses a three-axle hybrid power driving device and belongs to the field of driving of hybrid power automobiles. According to an electrombile double-motor four-gear transmission, an engine driving mechanism is additionally arranged on the basis of the electrombile double-motor four-gear transmission and is used for introducing power into an original double-motor four-gear transmission so as to form four pure electric gears and eight hybrid driving gears. According to the three-axle hybrid power driving device, the problem of poor power of hybrid power automobiles can be effectively solved; the output torque is continuous and the power is not interrupted in the processes of shifting gears and switching a pure electric mode and a hybrid driving mode; the problem of the power interruption is avoided; the comfortable level is improved; two hybrid driving gears can be added by additionally arranging a pair of pure electric gears in the original double-motor four-gear transmission, so that the high torque of low-speed driving and the power of high-speed driving can be better ensured.

The invention discloses a novel hybrid power system and a driving mode of the novel hybrid power system. An output shaft of an engine is connected with a first electric motor through a one-way clutch, an output shaft of the first electric motor is connected with a first input shaft of a gearbox, an output shaft of a second electric motor is connected with a second input shaft of the gearbox, an electric control clutch is arranged between the first input shaft of the gearbox and the second input shaft of the gearbox, at least three gears of structures are arranged in the gearbox, the even number gear and the odd number gear are respectively arranged on the first input shaft and the second input shaft, and each gear of structures on the same input shaft realize the gear switching through a synchronizer. Through adopting the mode, the novel hybrid power system can realize various driving modes, and the goals of energy saving and emission reduction are reached. The double advantages of extended-range pure electric driving and the plugging-in hybrid motive power driving are realized, the pure electric driving can be realized by aiming at the crowded situation of urban work conditions, and the high-power driving output under the high-speed work condition can also be realized.

The invention discloses a pantograph carbon slider assembly and an abrasion detection method for the same. The pantograph carbon slider assembly comprises a pantograph and a support for supporting thepantograph, wherein a detecting groove is formed in the reverse surface of the end, which is in contact with a cable, of the pantograph; a variable-resistance block is mounted in the detecting groove; an insulating plate is fixed on the bottom surface of the variable-resistance and is made of an insulating material; the insulating plate is fixedly connected with the top of a tightening shaft; thebottom of the tightening shaft penetrates through a guiding groove formed in the support and a fixed plate arranged in a protecting shell and then is fixedly connected with the top of a guiding column; the fixed plate is arranged in a cavity of the protecting shell; a spring sleeves the guiding column, and the bottom of the guiding column and the inner barrel of a tightening head are assembled; the outer wall of the tightening head and the protecting shell are assembled in a thread screwed manner; the tightening shaft and the fixed plate can be assembled slidably; and the resistance of the variable-resistance block is greater than that of the pantograph. The pantograph carbon slider assembly is simple in structure and convenient to use; whether the pantograph carbon slider assembly needsto be changed or not can be judged accurately; and the pantograph carbon slider assembly is low in manufacturing cost and suitable for being popularized widely.

The invention discloses a power transmission system comprising a reduction box and at least two hydraulic motors. The reduction box comprises at least two input shafts, and an output shaft of each hydraulic motor is connected with each input shaft of the reduction box. The invention further provides a grader comprising the power transmission system. By selection of number of the working hydraulic motors and / or regulation of displacement of the hydraulic motors and / or hydraulic pumps, output speed of the transmission system is changed, and the power transmission system has the advantages of good speed regulation stability, enlargement of speed regulation range and the like.

The invention discloses a hybrid driving system with a three-clutch automatic transmission and a control method thereof. In order to solve a problem of the traditional hybrid driving system that total powers of an engine and a driving motor cannot be sufficiently utilized or the driving motor cannot always operate within an optimal output characteristic rotation speed range, the hybrid driving system with the three-clutch automatic transmission comprises a first power converter, a starter / generator integrated machine, an engine, a fourth clutch, a driving motor, an energy storage device, a second power converter, the three-clutch automatic transmission, a differential mechanism, a fourth clutch output shaft end gear, a driving motor output shaft end gear and a transmission input shaft end gear, wherein the transmission input shaft end gear is mounted on a transmission input shaft of the three-clutch automatic transmission; and the fourth clutch output shaft end gear, the driving motor output shaft end gear and the transmission input shaft end gear are engaged with each other in sequence. The invention further provides a control method for the three-clutch automatic transmission.

The invention discloses a hybrid power coupling mechanism. The hybrid power coupling mechanism comprises two motors, two planetary lines and a shaft tooth system, wherein an engine is connected with aplanet carrier of the first planetary line; a generator is connected with a sun gear of the first planetary line; a brake and a clutch are arranged on the first planetary line; and by reasonable control over the brake and the clutch, a range extending driving mode can be realized. A driving motor is connected with a sun gear of the second planetary line, a planet carrier of the second planetary line is fixed, and an inner gear ring of the second planetary line outputs. The invention further discloses a corresponding control system and method. By an embodiment of the invention, various drivingmodes including a pure electric mode, a range extending driving mode and a hybrid power mode and the like can be realized, only three shafts are required, the structure is compact, and requirements for space are reduced.

The invention relates to a battery management system, in particular to a power limiting method for an electric vehicle. The power limiting method comprises the steps that the SOC of a battery, the total voltage of the battery and the lowest temperature of a cell in the battery are obtained; first power is obtained according to the SOC, the total voltage of the battery and the lowest temperature ofthe cell in the battery; the lowest voltage of the cell is obtained; whether the first power meets the power limiting condition of the cell or not is detected according to the lowest voltage of the cell and the lowest temperature of the cell, if so, second power is obtained according to the variation of the lowest voltage of the cell; and the minimum between the first power and the second power is used as the power output by a control motor. According to the power limiting method for the electric vehicle, the power performance is guaranteed when the voltage of a power battery is high, and itis guaranteed that powder failure does not appear on a vehicle when the voltage of the power battery is low.

The invention discloses an operation and switching method for different propulsion modes of a direct-current networking hybrid power propulsion system. According to the frequency converter, a core control mode of the shaft motor is divided into two parts, namely a rotating speed control mode and a torque control mode, the rotating speed control mode controls the output torque (power) of the shaftmotor by adjusting the rotating speed of the motor, and the frequency converter is suitable for being used in a PTH mode; the torque control mode is to judge the torque (power) required to be output by the shaft motor according to the rotating speed, and is suitable for being used in a PTI mode. Furthermore, the rotating speed control mode ensures the independent control function of shaft motor speed regulation in the PTH mode; the torque control mode ensures that the shaft-driven motor is always in an'assisting 'state in the PTI mode, the possibility of sudden power change and reverse work shutdown of a diesel propulsion main engine during combined arrangement is eradicated, the safety of the direct-current networking hybrid power propulsion system is improved, and the two control functions can be instantaneously and seamlessly switched according to working condition requirements.

The invention discloses a dual-motor multi-mode pure-electric drive system and a drive mode of the dual-motor multi-mode pure-electric drive system. The system comprises a first motor, a second motor,a first motor reduction gear set, a second motor reduction gear set, a power input shaft, a one-way clutch, a front planet row, a rear planet row, an electronic control clutch and a brake. The frontplanet row and the rear planet row are connected through a planet carrier, a front planet row sun gear is connected with the input shaft through the brake and the electronic control clutch, a front planet row gear ring is fixedly connected with the input shaft, a rear planet row sun gear is fixedly connected with the input shaft, and a rear planet row gear ring is fixedly connected with the inputshaft. Through operation of the electronic control clutch and the brake, conversion of a low-speed gear and a high-speed gear is achieved. Through combined output of the two motors, the combination ofthe power performance and the economical efficiency is optimal. The system is easy to operate, free of power interruption, easy to achieve and high in practicability.

The invention discloses a hybrid power coupling mechanism. The hybrid power coupling mechanism comprises two motors, two planetary lines, an axial gear system and the like, wherein an engine is connected with a planet carrier of the first planetary line and is connected with a sun gear of the first planetary line; a driving motor is connected with a sun gear of the second planetary line through agear pair, a planet carrier of the second planetary line is fixed, and an inner gear ring of the second planetary line is output. The invention further discloses a corresponding control system and a control method. By means of the hybrid power coupling mechanism, the control system and the control method, multiple driving mode of a pure electric mode, a hybrid power mode and the like can be achieved, only three shafts need to be arranged, the structure is compact, and requirementsfor the space are lowered.

The invention discloses a power driving system and a vehicle. The power driving system comprises an engine, a first motor generator, a second motor generator and a transmission. According to the transmission, a first shaft is connected with the crankshaft of the engine; the first motor generator is in power coupling connection with the first shaft; a second shaft is selectively in power coupling connection with the first shaft through a first clutch; the second motor generator is connected with the second shaft; a first part and a second part are selectively jointed with a third part; the third part is arranged on the rotor of the second motor generator; a third shaft and a fourth shaft are each provided with a gear driving gear; the third shaft is connected with the first part; the fourthshaft is connected with the second part; and a fifth shaft is provided with gear driven gears correspondingly engaged with the gear driving gear. According to the power driving system, the adjustablerange of a transmission speed ratio is large; gear difference is small; the operation efficiency of a motor is improved; and no power interruption phenomenon exists during gear shifting.

The invention discloses a failure guiding safety principle-based contactor automatic switching control method. Contactors are connected in series into a main circuit and a standby circuit respectively, and a control circuit is separated from a driving circuit. When the control circuit transmits a signal to the driving circuit, the driving circuit releases a corresponding contactor; and the driving circuit forms interlocking between two contactor driving circuits by adopting diodes and triodes, and when the two contactors do not receive a releasing signal, only a current contactor is kept in an off state, and the other contactor is not switched off. By the method, the separation of a high voltage circuit from a low voltage circuit and the separation of a device with long service life from a quick-wearing device are realized, electromagnetic interference between the high voltage circuit and the low voltage circuit and between the device with the long service life and the quick-wearing device is reduced, potential safety hazards of the circuits are reduced, and simultaneously, maintaining cost and maintaining difficulties are reduced. When a control board fails, a power supply system can maintain an original power supply state, and the software upgrading of the control board may not cause the interrupt of power supply, so higher power supply reliability is achieved.

The invention discloses a three-axle hybrid power driving device and belongs to the field of driving of hybrid power automobiles. According to an electrombile double-motor four-gear transmission, an engine driving mechanism is additionally arranged on the basis of the electrombile double-motor four-gear transmission and is used for introducing power into an original double-motor four-gear transmission so as to form four pure electric gears and eight hybrid driving gears. According to the three-axle hybrid power driving device, the problem of poor power of hybrid power automobiles can be effectively solved; the output torque is continuous and the power is not interrupted in the processes of shifting gears and switching a pure electric mode and a hybrid driving mode; the problem of the power interruption is avoided; the comfortable level is improved; two hybrid driving gears can be added by additionally arranging a pair of pure electric gears in the original double-motor four-gear transmission, so that the high torque of low-speed driving and the power of high-speed driving can be better ensured.

The invention discloses a multimode dual-motor driving system and a driving mode thereof. The multimode dual-motor driving system is characterized in that an output shaft of a first motor is connected with a first input shaft of a speed changing box; an output shaft of a second motor is connected with a second input shaft of the speed changing box; the first input shaft of the speed changing box is connected with the second input shaft of the speed changing box by a clutch; the speed changing box is internally provided with four gear structures; a first-gear gear set and a third-gear gear set are arranged on the second input shaft of the speed changing box; a second-gear gear set and a fourth-gear gear set are arranged on the first input shaft of the speed changing box; an odd-gear synchronizer is arranged between the first-gear gear set and the third-gear gear set; and an even-gear synchronizer is arranged between the second-gear gear set and the fourth-gear gear set. The invention has the advantages that by the mode, multimode gear shifting can be realized, and the implementation is easy; by combined control with driving of two motors, the optimized combination of the power performance and the economic performance can be realized; and gear shifting is realized by switching control of two motors, no power failure occurs and the comfort is good.

The invention discloses a planetary gear transmission. The transmission comprises a shell, a planetary gear set, a brake assembly and a clutch assembly, the brake assembly comprises a dual disc arranged between the shell and the planetary gear set, a wedge block assembly is arranged at the rear side of the dual disc, a driver push disc is arranged at the front side of the dual disc, and a supporting piece is arranged at the rear side of the wedge block assembly. The gear shifting process of the transmission is smooth, and power interruption is avoided; during braking, a traditional multi-piece friction plate is not needed, a one-way clutch is not needed, and a gear shifting mechanism is small in size; and in the braking process, force for pressing a multi-piece type friction pair is not needed, the requirement for power of a driver is low, and the size, cost and energy consumption of a braking unit power device can be greatly reduced.

The invention provides a hybrid power driving system. The hybrid power driving system comprises an engine, a first shaft, a planet row, a first clutch, a second clutch, a braking device, a generator,a second shaft, a brake, a first gear, a second gear, a third gear, a third shaft, a driving motor, a fourth shaft, a fourth gear and a differential mechanism. The hybrid power driving system is simple in structure, has multiple working modes and is good in platformization. The invention further provides a vehicle with the hybrid power driving system.

The invention discloses a two-gear transmission. The two-gear transmission comprises a normal meshing tooth two-way overrunning clutch, a shunting assembly and a brake; and the shunting assembly comprises an input element and two shunting elements, one shunting element is directly connected with the output end of the normal meshing tooth two-way overrunning clutch, the other shunting element is directly connected with the input end of the normal meshing tooth two-way overrunning clutch and externally provided with the brake, the input element of the shunting assembly serves as input of the two-gear transmission, and output of the normal meshing tooth two-way overrunning clutch serves as output of the two-gear transmission. When the brake does not work, two transmission paths simultaneouslysupply power to achieve joint driving, and the low speed and the large torque are output; and when the brake works, one transmission path is locked, and the high speed and the low torque are output.According to the two-gear transmission, shifting of two gears can be achieved only through one brake, the requirements for a control system are low, the gear shifting mode is simple and reliable, thegear shifting process is steady and simple, power failure can not occur in the gear shifting process, and the two-gear transmission is an ideal transmission of an electric automobile.

The invention discloses a common core cable detection device which comprises a signal receiving processing component and a power supply component. A first on indicator, a first switch and one end of a rechargeable battery are successively connected in series. The other end of the rechargeable battery, a second switch and a second on indicator are successively connected in series. An external power supply common interface is connected in parallel with a photovoltaic component and the rechargeable battery. The line of the external power supply common interface and the photovoltaic component is connected with a power charging / supply control switch. The device is used to detect whether both ends of a cable core are the same cable core; the device has the advantages of high accuracy and easy operation; the power of the carried power supply component is sustainable; the external power supply common interface is connected with an external power supply in a room; the battery can be charged by the photovoltaic component outdoors; and the power supply of the power supply component of the working device is not interrupted.

The invention relates to the field of vehicles, and specifically discloses a two-speed pure electric transmission system, a pure electric engineering vehicle and a control method thereof. The two-speed pure electric transmission system provided by the invention can realize the adjustment and change of power output under different driving conditions. , in the case of heavy load, the brake is separated from the ring gear and the clutch is combined, and the first gear is operated to achieve high torque output; in the case of light load, the brake is combined with the ring gear and the clutch is separated, and the second gear is operated to increase the speed; Moreover, during the shifting process, since one of the clutch and the brake is always in a combined state, it is possible to realize no power interruption during the shifting process. The pure electric engineering vehicle provided by the present invention includes the above-mentioned two-speed pure electric transmission system, which can switch gears according to the optimal dynamic performance of the pure electric engineering vehicle, so as to realize the motor running in the high-efficiency speed region as much as possible, thereby reducing the loss, Improve the efficiency of mechanical work.

The invention relates to a battery management system, in particular to a power limiting method for an electric vehicle. The power limiting method comprises the steps that the SOC of a battery, the total voltage of the battery and the lowest temperature of a cell in the battery are obtained; first power is obtained according to the SOC, the total voltage of the battery and the lowest temperature ofthe cell in the battery; the lowest voltage of the cell is obtained; whether the first power meets the power limiting condition of the cell or not is detected according to the lowest voltage of the cell and the lowest temperature of the cell, if so, second power is obtained according to the variation of the lowest voltage of the cell; and the minimum between the first power and the second power is used as the power output by a control motor. According to the power limiting method for the electric vehicle, the power performance is guaranteed when the voltage of a power battery is high, and itis guaranteed that powder failure does not appear on a vehicle when the voltage of the power battery is low.

The invention relates to a dual-motor transmission structure, which comprises a first motor M1, a second motor M2, a power coupling transmission unit, a walking driving force transmission unit and a walking driving force output shaft S-out, and is characterized in that the power coupling transmission unit is in transmission connection between an output shaft of the first motor M1 and an output shaft of the second motor M2; a walking driving force output end is arranged on the walking driving force output shaft S-out; the driving system controls power output in a coupling mode through the main control system and is used for driving a walking system in the electric engineering vehicle, the needed vehicle state is achieved, the flexible characteristic of double-motor control is utilized, gearbox gear shifting is omitted, the working condition requirement for high-speed transition of the engineering vehicle is met, the economical efficiency and reliability of the whole vehicle are improved, and the driving system is simple in structure control and low in cost, power interruption is avoided; the whole vehicle is more compact in arrangement, space is saved, the motor often works in a high-efficiency interval, the overload working condition is few, and the service life of the motor is prolonged.

The invention discloses an adjusting device and method applied to Stirling engine heating pipe overtemperature. The adjusting device applied to the Stirling engine heating pipe overtemperature comprises a pipeline and a heat collection cavity; the pipeline is arranged on the inner wall of the heat collection cavity; and the pipeline communicates with a cooling water source. When the pipe wall temperature of a heating pipe exceeds a preset threshold, a controller controls to open a solenoid valve used for controlling water on-off in the pipeline to make water in the pipeline flow, the inner wall temperature of the heat collection cavity drops rapidly, radiation heat exchange amount of the inner wall of the heat collection cavity and the heating pipe is increased due to the inner wall temperature drop of the heat collection cavity, and then the temperature of the heating pipe is reduced. Light spots do not need to be cut and operation of a power generation device does not need to be paused, when the pipe wall temperature of the heating pipe is overtemperature, the operation is even more stable, electricity generation can not be broken off, and the stability of power output is guaranteed.

The invention provides a double-MCU automatic transmission control system with a rapid gear shifting mode. A power supply module is respectively connected with a first MCU and a second MCU through a power supply management module, and the first MCU and the second MCU are connected through a serial bus; the two MCUs are combined into an automatic transmission control system, and when the dual-core MCU performs control in a serial bus mode, the auxiliary MCU can strengthen collection of various most critical analog signals and motor driving in the automobile driving process. Therefore, analog signals are prevented from being interfered, the motor is driven more accurately, and automobile driving is smoother and more comfortable. The vehicle automatic transmission is controlled through the double MCUs, signals are prevented from being interfered, the AMT transmission system does not have faults, each gear in the AMT transmission system corresponds to a gear shifting finger, the gear shifting time can be saved, and the pause feeling caused by gear shifting is avoided.

The invention relates to the technical field of automobiles and discloses an automobile hybrid power coupling system and a hybrid power control method and device; an engine of the coupling system is connected with a generator through a planetary row, and a driving motor is connected with a differential mechanism through a transmission device; the planetary row comprises three rotating elements, one of the three rotating elements is provided with a first brake, and the other two of the three rotating elements are respectively connected with the engine and the generator in a one-to-one correspondence mode; the planetary row is in transmission connection with the transmission device through the rotating element provided with the first brake; a second brake is arranged on an output shaft of the generator; and a third brake is arranged on the output shaft of the driving motor. Regulation of the speed ratio of the output shaft of the engine to the output shaft of the generator can be realized through the planetary row, so that the requirements for the dynamic performance and the economical efficiency of the automobile can be simultaneously met; moreover, the coupling system is compact in structure, and through the hybrid power control method and device, switchover between various working modes can be realized.

The invention discloses a failure guiding safety principle-based contactor automatic switching control method. Contactors are connected in series into a main circuit and a standby circuit respectively, and a control circuit is separated from a driving circuit. When the control circuit transmits a signal to the driving circuit, the driving circuit releases a corresponding contactor; and the driving circuit forms interlocking between two contactor driving circuits by adopting diodes and triodes, and when the two contactors do not receive a releasing signal, only a current contactor is kept in an off state, and the other contactor is not switched off. By the method, the separation of a high voltage circuit from a low voltage circuit and the separation of a device with long service life from a quick-wearing device are realized, electromagnetic interference between the high voltage circuit and the low voltage circuit and between the device with the long service life and the quick-wearing device is reduced, potential safety hazards of the circuits are reduced, and simultaneously, maintaining cost and maintaining difficulties are reduced. When a control board fails, a power supply system can maintain an original power supply state, and the software upgrading of the control board may not cause the interrupt of power supply, so higher power supply reliability is achieved.

A single-actuator two-gear planetary gear transmission comprises a shell, a planetary row, an actuator assembly, a front brake assembly and a rear brake assembly, the front brake assembly comprises a blocking piece arranged in the middle of the shell, a wedge-shaped block assembly is arranged on the front side of the blocking piece, the actuator assembly is arranged on the front side of the wedge-shaped block assembly, and the rear brake assembly is arranged on the rear side of the blocking piece and connected with the actuator assembly through a transmission rod. The transmission only uses one actuator, so that the cost is saved, the occupied space is reduced, and installation is convenient; no one-way clutch is needed, but impact can be avoided during gear shifting, the cost is saved, the occupied space is reduced, and installation is convenient; in the gear shifting process, only one actuator needs to be controlled to work, coordination to the action time of two actuators does not exist, control is simple, and the possibility that two gear shifting execution units are locked at the same time due to control errors does not exist; and the gear shifting process is smooth and free of power interruption.

The invention discloses a hybrid drive system with a three-clutch automatic transmission and a control method. In order to overcome the problems in the existing hybrid drive system that the total power of the engine and the drive motor cannot be fully utilized or the drive motor cannot always operate at its optimum Problems within the speed range of output characteristics, a hybrid drive system with a three-clutch automatic transmission includes a first power converter, a starter / generator integrated machine, an engine, a fourth clutch, a drive motor, an energy storage device, a second power converter, The three-clutch automatic transmission, the differential, the fourth clutch output shaft gear, the drive motor output shaft gear and the transmission input shaft gear; the transmission input shaft gear is installed on the transmission input shaft in the three-clutch automatic transmission, the fourth The clutch output shaft end gear, the drive motor output shaft end gear and the transmission input shaft end gear are meshed and connected sequentially. The invention also provides a control method of the three-clutch automatic transmission.

The invention relates to the field of vehicles, and particularly discloses a two-gear pure electric speed change system, a pure electric engineering vehicle and a control method thereof. The two-gearpure electric speed change system can realize power output adjustment and change under different driving conditions. In the case of large loads, a brake is separated from a gear ring and is combined with a clutch, first-gear operation is carried out, and high torque output is achieved; in the case of light loads, the brake is combined with the gear ring and separated from the clutch, second-gear operation is carried out, and therefore the rotating speed is increased; and in the gear shifting process, since the clutch and the brake have a combined state all the time, no power interruption can be achieved in the gear shifting process. The pure electric engineering vehicle comprises the above-mentioned two-gear pure electric speed change system, gear shifting can be carried out according to the optimal power of the pure electric engineering vehicle, a motor runs in a high-efficiency rotating speed zone as much as possible, the loss is reduced, and the efficiency of mechanical work is improved.

The invention discloses an over-temperature regulating device and method suitable for a heating tube of a Stirling engine, comprising a pipeline and a heat collecting cavity, the pipeline is arranged on the inner wall of the heat collecting cavity, and the pipeline communicates with a cooling water source. When the temperature of the pipe wall of the heating pipe exceeds the preset threshold, the controller controls to open the solenoid valve used to control the on-off of the water in the pipe, so that the water inside the pipe flows, the temperature of the inner wall of the heat collecting chamber drops rapidly, and the temperature of the inner wall of the heat collecting chamber The decrease of the heat collection chamber will increase the radiation heat transfer between the inner wall of the heat collecting chamber and the heating tube, thereby reducing the temperature of the heating tube. It can be seen that when the temperature of the heating tube wall exceeds the temperature, it is not necessary to cut off the light spot and suspend the operation of the power generation device. It makes the operation more stable, does not interrupt the power generation, and ensures stable power output.

The invention is applicable to the technical field of electric machinery, and provides a special socket for a hairdryer. The special socket comprises an electric connector assembly and a clamp connector assembly. The electric connector assembly comprises a plug plate, an electric connector head, a baffle plate and a plug. The outer surface of the plug plate is provided with a socket hole. The electric connector head and the and the plug are fixedly connected to the baffle; the electric connector head is positioned on the right side of the baffle platre; the connector is aligned with the jack and the connector is inserted into the jack, At this time, that electric connection between the hair dryer and the external pow supply is completed, the adjusting lever is released, At this time, thatbaffle plate is jam by the baffle plate, so as to realize the clamping and fixing of the plug, Compared with the existing plug-in board, the novel plug-in board can engage and connect the plug and theplug-in board, and the plug and the plug-in board can be tightly connected no matter how the position of the hairdryer is moved when the socket is used with the hairdryer, so that the power supply isnot interrupted, the use is more convenient, and the use of the plug and the plug-in board is convenient.