30results about How to "Will not cause overheating" patented technology

The invention discloses a dehumidification and dust removal device for large-size integrated electronic equipment. The dehumidification and dust removal device is reasonable and simple in structure, low in production cost and convenient to mount; the electronic equipment is arranged in a box body, can be used for carrying out dehumidification and dust removal and also does not cause overheating; the electronic equipment can efficiently dissipate heat; a temperature sensor and a humidity sensor are used for monitoring temperature and humidity in the electronic equipment respectively; in a working process, inner air is circulated and dust is absorbed into a dust filtering bag and on an HEPA (High Efficiency Particulate Air) dust collection filtering screen and a filtering element; an aldehyde removing screen and a deodorization removing screen have a filtering effect on the air in the electronic equipment; when the electronic equipment needs to be subjected to the dehumidification, a heater is started and moisture is absorbed by a water absorption layer; the heater is used for drying the air in the electronic equipment so that the dehumidification effect is realized; when the inner temperature is high, the heater is shut down.

The invention discloses a fuel cell system with a high-potential protection function. An anti-freezing heating resistor of the fuel cell system is connected with high voltage output of a fuel cell stack through a stack protection contactor, in the processes of starting, stopping, standing by and low-load operation of the fuel cell stack, when the output voltage of the stack is higher than the setstack protection voltage, the stack protection contactor is controlled to be closed, the anti-freezing heating resistor is used for consuming some fuel cell electric energy, and catalyst deteriorationcaused by stack high-voltage operation is avoided; when the stack output voltage is lower than the stack protection cancel voltage for a certain period of time, the stack protection contactor is controlled to be switched off, and the fuel cell stack performs normal output; the resistance of the anti-freezing heating resistor is matched, it can be ensured that the output voltage of the stack is lower than the stack protection voltage under the non-load condition; according to the method, the anti-freezing heating resistor can be used for effectively restraining catalyst deterioration caused byexcessively high output voltage of the fuel cell.

The cooling system in use for electronic module includes a radiator module and a heat exchange module. The radiator module includes a base seat attached to electronic module to transfer heat energy generated by the electronic module. Multiple heat radiating fins are setup around the radiator module. Being fixed on the base seat, the heat exchange module is thermal coupled to the base seat to remove heat energy transferred by the base seat. The cooling system raises efficiency of heat elimination greatly. Even if fault of one part from fan in the cooling system or water-cooled heat sink occurs, electronic module will not be overheated.

The invention relates to a high-power neutral electrolyte metal-air battery system and a using method thereof. The battery system comprises two or a plurality of basic cell units connected in series or in parallel, an electrolyte filtering box, a circulating pump, a control valve, an electrolyte input distributor, an electrolyte discharge manifold, a drain valve, an electrolyte overflow manifold,a control circuit, a controller, a connecting pipeline and the like. Each basic cell unit consists of a reaction box, an anode, a cathode, electrolyte, a cathode busbar and an anode busbar; and an electrolyte input port, an electrolyte discharge port and an electrolyte overflow exhaust port are formed at both sides of the reaction box. The electrolyte is neutral liquid, such as salt water, seawater and the like. The electrolyte of each basic cell unit is communicated with each other without using an electrolyte isolator. The high-power neutral electrolyte metal-air battery system and the usingmethod thereof, which are disclosed by the invention, are applicable to the high-power power utilization requirements and have the characteristics that after the anodes are used up, the anodes can bereplaced so as to reuse the high-power neutral electrolyte metal-air battery system; the high-power neutral electrolyte metal-air battery system can be stored for long time in a safe and maintenance-free mode, and is simple to start up and use; a load can be cut off at any time; the high-power neutral electrolyte metal-air battery system and the using method thereof have no pollution to the environment; and reaction precipitates can be recovered and recycled.

The invention discloses a forming method of a straight toothed spur gear compound forge, in particular to a forming method of a straight toothed spur gear compound forge with the weight of 1-3 kilos, large diameter and large modulus, which belongs to the technical field of metal plastic processing and comprises the following steps: precisely blanking a round steel bar into billets with a certain length; heating the billets to 720-850DEG C; forging the billets into an intermediate forge piece approximate to the final shape on a mechanical press by using a precision forging die; and after carrying out intermediate annealing treatment, surface spill throwing treatment and phosphating and saponifying lubrication, carrying out cold finishing on the intermediate forge piece into a final forge piece the toothed surface of which is free from being subsequently processed by using a finishing die on a hydropress via utilizing a divided flow precision forging technology. The process method has the advantages of high utilization rate of materials, as well as high precision good performance, good surface quality, stable quality of gear forge pieces and the like.

The invention relates to a pure-oxygen pulverized coal entraining combustor, which comprises a pulverized coal nozzle arranged at the middle part of a combustor block, a pulverized coal feeding flue gas channel, a plurality of circular seam oxygen guns arranged at the circumference of the pulverized coal nozzle, a circular seam oxygen chamber connected to the outer ends of the plurality of circular seam oxygen guns, a central oxygen gun arranged in the pulverized coal flue gas channel and a circular seam oxygen inlet arranged on the central oxygen gun and communicated with the circular seal oxygen chamber. The length of flame of the combustor can be adjusted by adjusting flow adjusting valves on a central oxygen pipeline and a circular seam oxygen pipeline. Pulverized coal-containing flue gas is sprayed out from the pulverized coal flue gas channel, the central oxygen is sprayed out from the central oxygen gun positioned in the center of the pulverized coal flue gas channel, the pulverized coal flue gas and the central oxygen are premixed and burnt to form a stable root flame, therefore the fuel can be saved by 35 percent, the flue gas amount can be reduced by 70 percent, and nitric oxides contained in the flue gas are avoided.

The invention relates to an inner heat treatment chamber (3) for thermally processing a substrate (20), comprising walls (10) that surround an inner space (24) of the inner heat treatment chamber (3), a storage unit (8) for storing the substrate (20) during the thermal processing and an energy source (11) for introducing energy into the inner space (24) of the inner heat treatment chamber (3), wherein at least a part of the inner sides of the walls (10) is designed to reflect power introduced by the energy source (11). The at least one part of the inner sides of the walls (10) is made of a material that reflects at least infrared radiation to a high degree. The invention further relates to an inner heat treatment chamber (3) for thermally processing a substrate (20), comprising walls (10) that surround an inner space (24) of the inner heat treatment chamber (3), a storage unit (8) for storing the substrates (20) during the thermal processing and an energy source (11) for introducing energy into the inner space (24) of the inner heat treatment chamber, wherein a cooling device (14) is provided for cooling the walls (10).

The invention discloses a rapid heating type cloth dyeing tank. The rapid heating type cloth dyeing tank comprises a tank body, a liquid stirring device, and a heating device which is arranged in thetank body, wherein the heating device comprises a heating layer which is arranged on the tank body, a plurality of heating parts which are arranged in the heating layer, and heat transferring liquid for soaking the heating parts; adjacent two heating parts are connected through a heat dissipating sheet. According to the rapid heating type cloth dyeing tank, heating liquid is heated through the heating parts, so that the dyeing liquid in a dyeing jar is kept in consistent temperature, and as a result, excessively high local temperature is avoided; the temperature of the dye in the dyeing jar iseasily controlled through the abovementioned mode, and the problem of excessively high temperature is avoided.

The invention provides a minitype turbo-jet fuel oil control method and device and a storage medium, wherein, the control method includes the steps that present rotating speed of a minitype turbo-jetis collected; and the fuel oil supply of the minitype turbo-jet is controlled according to the present rotating speed and a given rotating speed. The minitype turbo-jet fuel oil control method and device and the storage medium can accurately control the minitype turbo-jet to realize the requirements of stability, speediness and accuracy, do not cause overheat or flameout of the minitype turbo-jet,and are safe and reliable.

The invention belongs to the field of heat dissipation of electronic devices and discloses a heat dissipater having protrusions on the surfaces of radial ribs. The heat dissipater comprises a solid cylinder, protrusions and ribs, wherein the bottom of the solid cylinder is close to an electronic device used as a heat source, and reduces the temperature of the heat source by means of heat conduction. The side of the solid cylinder is connected with a plurality of radial ribs. Gaps between every two adjacent ribs form airflow paths. The air takes the heat of the heat dissipater away by heat convection. The protrusions are in cylindrical shapes and vertically disposed on the ribs, have an eight equal to that of the ribs and are used for increasing the heat exchange area and enhancing the heatconvection effect of the air. The cylindrical protrusions are disposed on the ribs of the heat dissipater to increase the convection heat exchange area, increase the air flow speed and enhance the convection heat transfer effect. The presence of the protrusions enhances the disturbance of the air flow and is also beneficial to improving the heat dissipation effect.

The invention discloses a model plane which comprises a model plane body. A model rear plane body is mounted at the horizontal position of the tail of the model plane body, model fixed tail wings arevertically mounted on two sides of the model rear plane body, model main wings are horizontally and fixedly mounted on two sides of the middle of the model plane body, upper shells are embedded into the middles of the model main wings, a first motor steering engine is embedded into one side of each upper shell, a first crank is connected with one side of each first motor steering engine through apin, a second connecting rod is connected at the tail end of each first crank, a first connecting rod is movably connected at the tail end of each second connecting rod, a second crank is movably connected at the tail end of each first connecting rod, and a motor connector is arranged at the tail end of each second crank. According to the model plane, the falling off probability of an engine can be reduced, flight safety is improved, the plane is provided with a crank mechanism, a power output direction is changed, utilization of engine efficiency is improved, and power wastage is reduced.

The invention provides a heat dissipation device for a flash lamp. The heat dissipation device comprises a glass cover plate, a heat dissipation layer and an ink coating layer which are sequentially arranged in an overlapping mode. The ink coating layer is arranged over the flash lamp and is not in contact with the flash lamp. According to the heat dissipation device for the flash lamp, heat generated by the flash lamp in the selfie process can be absorbed by the ink coating layer and can also be conducted out of a mobile terminal through the heat dissipation layer; as the absorbed heat can be effectively transferred out of the mobile terminal in time, local overheating of the mobile terminal will not be caused, and then it can be avoided that the mobile terminal is damaged due to local overheating.

The invention provides a high-obdurability near-eutectic aluminum-silicon-copper-magnesium alloy and a preparation method thereof. The alloy comprises the following elements of, by mass, 9-11% of Si,2.7-3.2% of Cu, 0.25-0.35% of Mg, 0.2-0.25% of Zr, 0.03-0.04% of Sr, 0.12-0.15% of Mm, larger than 0 and less than or equal to 0.2 % of Fe, larger than 0 and less than or equal to 0.2 % of Zn and thebalance Al. According to the method, through the preparation technology of step (1) raw material drying, step (2) melting, step (3) smelting, step (4) detecting, step (5) refining and step (6) casting, the alloy is obtained. According to the near-eutectic aluminum-silicon-copper-magnesium alloy, the mechanical property test result is that when the alloy is under the as cast condition, the room temperature tensile strength is 215-245 MPa, the fracture elongation rate is 2-3.5%, and the brinell hardness is 88-90; when the alloy is under the heat treatment state (T6), the room temperature tensilestrength is 410-440 MPa, the fracture elongation is 3.5-4.5 %, and the brinell hardness is 125-130; and the alloy can be used for preparing thin walls and complex castings, can be used for large andmedium castings which are capable of bearing major loads and are complex in shape, and can meet the service requirements of aviation and automobile important parts.

The invention discloses an adaptive ultra-high-efficiency gas-liquid separator for a parallel compressor unit, which comprises a casing, a separation chamber is arranged in the casing, an inlet pipe, an air outlet pipe and an oil return pipe, and the separation chamber includes a gravity separation chamber and an oil return pipe. The centrifugal separation chamber arranged around the separation chamber; the outlet end of the inlet pipe communicates with the inlet end of the centrifugal separation chamber; the air outlet pipe is used to output the gas passing through the gravity separation chamber; the housing is also provided with a diversion chamber located below the separation chamber and the collection chamber located below the diversion chamber; the lower ends of the gravity separation chamber and the centrifugal separation chamber communicate with the diversion chamber; a deflector is provided in the diversion chamber to divert the gas separated by the centrifugal separation chamber to the gravity The separation chamber and the liquid are diverted to the collection chamber; one end of the oil return pipe is connected with the collection chamber, and the other end is connected with the air outlet pipe. The invention has the advantages of small size, convenient modular assembly, high separation efficiency, avoiding harmful overheating of suction, ensuring reliable oil return within the full load range, and the like.

The invention discloses an evaporative cooling system of rail transit traction equipment, which comprises a water cooling cavity, an air cooling cavity and a liquid cooling loop, and is characterizedin that a main water inlet pipe and a main water outlet pipe are arranged in the middle of the water cooling cavity and are connected with water cooling plates of power modules in a converter; one endof the main water inlet pipe and one end of the main water outlet pipe are communicated through a transformer heat dissipation assembly, the other end of the main water inlet pipe is connected with adriving part, the other end of the main water outlet pipe is connected with a heat exchanger, and the driving part is connected with the heat exchanger; the heat exchanger is located in the heat dissipation air channel of the air cooling cavity and used for dissipating heat absorbed by the liquid cooling loop into air. The invention further discloses rail transit traction equipment which comprises a converter, a transformer and the evaporative cooling system, all the power modules in the converter are located on the two sides of the water cooling cavity respectively, and the transformer is located at one end of the water cooling cavity. The evaporative cooling system and the rail transit traction equipment have the advantages of being high in integration level, simple and compact in structure, good in heat dissipation effect and the like.

The invention relates to a control method of an intelligent wireless charger, and belongs to the field of wireless charging. The method comprises the steps that: the operation state of an electronic device is obtained, wherein the operation state of the electronic device at least comprises the temperature condition of the electronic device; a temperature threshold value is set; and a charging mode is selected by comparing a temperature value of the electronic device with the temperature threshold value, wherein the charging mode comprises one or more of a quick charging mode, an intelligent charging mode and an intermittent charging mode, wherein the quick charging module is a mode for outputting constant power for charging, the intelligent charging mode can adjust the magnitude of the output power according to the temperature value of the electronic device, and the intermittent charging mode is a mode in which the electronic device is intermittently charged when the temperature value of the electronic device cannot be reduced according to the magnitude of the adjusted output power. With the control method adopted, the situation that the temperature of the electronic device is too high in the charging process is avoided, and the electric quantity of the electronic device can be kept in a continuous rising state.

The invention discloses a heat-preserving bamboo tube for holding bamboo mountain delicacies, comprising a fresh bamboo tube with a sealed bottom and an open top, an annular cavity is opened inside the tube wall of the bamboo tube, and a hole for positioning the opening position of the annular cavity is arranged on the top of the bamboo tube The annular channel, the annular channel and the annular cavity have the same central axis and the same ring width, the central axis of the bamboo tube is the central axis of the annular cavity around the bamboo tube, and the annular cavity is close to the center of the bamboo tube The inner cavity wall of the shaft is covered with a metal sheet, the metal sheet completely covers the inner cavity wall of the annular cavity, and a plurality of heating sheets are evenly distributed on the metal sheet. The invention is provided with a heating sheet and a metal sheet for heat conduction in the bamboo tube, which solves the problem of how to keep the dishes warm.

The invention discloses a new energy automobile low-noise permanent magnet motor. The new energy automobile low-noise permanent magnet motor comprises a motor and a sound absorbing cover. The sound absorbing cover is installed outside the motor. The motor comprises a motor base, a flange end cover, a front end cover, a rear end cover, a bearing, a first bearing outer cover, a second bearing outer cover, a first bearing inner cover, a second bearing inner cover, a stator, a rotor, two conjunction boxes and a counting device. The sound absorbing cover is divided into a first main body and a second main body. The first main body and the second main body are connected through a plurality of bolts, and each bolt is provided with a gasket. The flange end cover, the rear end cover and the bearing end cover are made of a gray cast iron material. Each bolt and each gasket are subjected to a galvanizing passivation technology. The sound absorbing cover is made of a toughened glass material. The new energy automobile low-noise permanent magnet motor has the advantages that the structure is simple, and the mounting and dismounting are convenient; the galvanizing passivation technology is adopted, so that the service lifetime is prolonged; in addition, the damping performance is good, and the wear resistance is relatively good.

The invention discloses a method and system for suppressing the counter electromotive force of a permanent magnet synchronous motor of an electric vehicle, and relates to the technical field of electric vehicles. If the speed is greater than the preset speed, the excitation current and torque current will be adjusted according to the voltage of the bus capacitor, and the on-off of the switching device in the three-phase bridge circuit will be controlled, so that the voltage of the bus capacitor is within the preset voltage range until the motor’s current The rotation speed is not greater than the preset rotation speed. The method and system for suppressing the back electromotive force of the permanent magnet synchronous motor of the electric vehicle in the present invention protect the bus capacitor and the switching devices in the three-phase bridge circuit from being damaged, so that the whole vehicle has enough time to use the braking system to reduce the vehicle speed Down to zero without reducing motor efficiency, overheating the motor, or increasing maintenance costs.

The invention belongs to the field of heat dissipation of electronic devices and discloses a heat dissipater having protrusions on the surfaces of radial ribs. The heat dissipater comprises a solid cylinder, protrusions and ribs, wherein the bottom of the solid cylinder is close to an electronic device used as a heat source, and reduces the temperature of the heat source by means of heat conduction. The side of the solid cylinder is connected with a plurality of radial ribs. Gaps between every two adjacent ribs form airflow paths. The air takes the heat of the heat dissipater away by heat convection. The protrusions are in cylindrical shapes and vertically disposed on the ribs, have an eight equal to that of the ribs and are used for increasing the heat exchange area and enhancing the heatconvection effect of the air. The cylindrical protrusions are disposed on the ribs of the heat dissipater to increase the convection heat exchange area, increase the air flow speed and enhance the convection heat transfer effect. The presence of the protrusions enhances the disturbance of the air flow and is also beneficial to improving the heat dissipation effect.

The present disclosure relates to a microwave oven and a control method thereof, and the method of controlling a microwave oven includes: accessing a cooking time; setting an operation time of a transformer as a first time for which the transformer is operated with a high output following a dormant time, a second time for which the transformer is operated with a low output until the end of the cooking time, a third time for which the transformer is operated at the low output following a time operating at the high output, and a fourth time for which the transformer is operated at high output following a time operating at the low output, according to a total cooking time including a previous cooking time and the input cooking time; and setting and controlling the output of the transformer in an order of the first time, the third time, the fourth time, and the second time.

The invention relates to a flue gas recirculating system based on a bypass heat exchanger, and provides a system which meets reheated steam steam-temperature regulation of a secondary reheating boilerbetter. The flue gas recirculating system based on the bypass heat exchanger comprises a main flue which is connected with a flue gas outlet of a boiler, wherein a preheater, a low-pressure coal economizer, an electric dust remover and a draught fan are sequentially arranged on the flue gas main pipeline; the flue gas main pipeline behind the electric dust remover further communicates with a recirculating flue; the recirculating flue communicates with a boiler hearth; a regulating baffle plate device is arranged on the recirculating flue between a recirculating fan and a gas inlet of the boiler hearth; a cooling bypass is arranged on the preheater; a heat exchanger is arranged on the cooling bypass; and a heat exchange working medium of the heat exchanger adopts low-temperature flue gas at the system outlet of the low-pressure coal economizer of the unit. Low-temperature flue gas is fed into the hearth through the recirculating fan, so that a flue gas mixing condition of the hearth isimproved.

The invention discloses a novel oil removal method applied to pretreatment of an automobile body, and relates to the technical field of automobile production and manufacturing, the oil removal method comprises the steps of gas preparation, gas dissolving, floating, collection, heating and separation. According to the method, a gas-liquid mixed state is made in degreasing fluid, in the rising process of gas microbubbles, grease suspended in the degreasing liquid is brought to the liquid level of the degreasing tank and gathered through jacking, adsorption and clamping, and the collection efficiency is much higher than that of a grease natural floating mode; production waste heat of a coating workshop is fully utilized in heating of the degreasing tank, energy is greatly saved, and the method is efficient, energy is saved, and components of degreasing fluid are not damaged.

The invention relates to a high-power neutral electrolyte metal-air battery system and a using method thereof. The battery system comprises two or a plurality of basic cell units connected in series or in parallel, an electrolyte filtering box, a circulating pump, a control valve, an electrolyte input distributor, an electrolyte discharge manifold, a drain valve, an electrolyte overflow manifold,a control circuit, a controller, a connecting pipeline and the like. Each basic cell unit consists of a reaction box, an anode, a cathode, electrolyte, a cathode busbar and an anode busbar; and an electrolyte input port, an electrolyte discharge port and an electrolyte overflow exhaust port are formed at both sides of the reaction box. The electrolyte is neutral liquid, such as salt water, seawater and the like. The electrolyte of each basic cell unit is communicated with each other without using an electrolyte isolator. The high-power neutral electrolyte metal-air battery system and the usingmethod thereof, which are disclosed by the invention, are applicable to the high-power power utilization requirements and have the characteristics that after the anodes are used up, the anodes can bereplaced so as to reuse the high-power neutral electrolyte metal-air battery system; the high-power neutral electrolyte metal-air battery system can be stored for long time in a safe and maintenance-free mode, and is simple to start up and use; a load can be cut off at any time; the high-power neutral electrolyte metal-air battery system and the using method thereof have no pollution to the environment; and reaction precipitates can be recovered and recycled.

The invention discloses a new energy automobile low-noise permanent magnet motor. The new energy automobile low-noise permanent magnet motor comprises a motor and a sound absorbing cover. The sound absorbing cover is installed outside the motor. The motor comprises a motor base, a flange end cover, a front end cover, a rear end cover, a bearing, a first bearing outer cover, a second bearing outer cover, a first bearing inner cover, a second bearing inner cover, a stator, a rotor, two conjunction boxes and a counting device. The sound absorbing cover is divided into a first main body and a second main body. The first main body and the second main body are connected through a plurality of bolts, and each bolt is provided with a gasket. The flange end cover, the rear end cover and the bearing end cover are made of a gray cast iron material. Each bolt and each gasket are subjected to a galvanizing passivation technology. The sound absorbing cover is made of a toughened glass material. The new energy automobile low-noise permanent magnet motor has the advantages that the structure is simple, and the mounting and dismounting are convenient; the galvanizing passivation technology is adopted, so that the service lifetime is prolonged; in addition, the damping performance is good, and the wear resistance is relatively good.

The invention discloses an efficient battery energy overall balancing method. according to the efficient battery energy overall balancing method, the battery energy overall balance comprises a batterypack and a balance system. The battery pack is formed by connecting a plurality of single batteries in series through a circuit. The balance system is composed of a plurality of balance units, each balance unit corresponds to each single battery one to one, and the balance units are used for balancing the voltage of the single batteries and battery series-connection overall voltage. The balance unit comprises a voltage detection module, an intelligent control module and a boosting module. The voltage detection module is used for detecting the voltage of the single batteries on the series batteries. The output end of the voltage detection module is electrically connected with the input end of the intelligent control module. The output end of the intelligent control module is electrically connected with the boosting module. The boosting module is used for boosting voltage of the single battery detected by the voltage detection module in an overcharge state, so that voltage of the singlebattery is boosted to the overall voltage of battery series connection. The method has the advantages that the battery overheat protection circuit is different from adjacent balance and resistance balance, the whole battery balance is achieved, no loss is caused, the power balance efficiency is high, the battery is accurately tracked and protected, overheating of the battery is avoided, and energy is saved.

The invention discloses an electric vehicle permanent magnet synchronous motor back electromotive force suppression method and system, and relates to the technical field of electric vehicles, the method comprises the following steps: if an electric vehicle is in a motor high-speed power failure or fault high-speed trailer state and the current rotating speed of the motor is greater than a preset rotating speed, adjusting the exciting current and the torque current according to the voltage of the bus capacitor, and controlling the on-off of a switching device in the three-phase bridge circuit,so that the voltage of the bus capacitor is within a preset voltage range until the current rotating speed of the motor is not greater than the preset rotating speed. According to the back electromotive force suppression method and system for the permanent magnet synchronous motor of the electric vehicle, the bus capacitor and a switching device in a three-phase bridge circuit are protected against damage, meanwhile, the whole vehicle has enough time, the vehicle speed is reduced to zero through a braking system, the motor efficiency cannot be reduced, the motor cannot be overheated, and the maintenance cost cannot be increased.

The invention discloses a low-noise permanent magnet motor for a new energy automobile, which comprises a motor and a sound absorbing cover, wherein the sound absorbing cover is installed outside themotor; the motor comprises a motor base, a flange front cover, a front end cover, a rear end cover, a bearing, a first bearing outer cover, a second bearing outer cover, a first bearing inner cover, asecond bearing inner cover, a stator, a rotor, two junction boxes and a counting device; the sound absorbing cover is divided into a first main body and a second main body, the first main body and the second main body are connected through a plurality of bolts, and each bolt is provided with a gasket; the flange end cover, the rear end cover and the bearing end cover are made of a gray cast ironmaterial; each bolt and each gasket are subjected to a galvanizing passivation technology; and the sound absorbing cover is made of a toughened glass material. The low-noise permanent magnet motor provided by the invention for the new energy automobile is simple in structure and convenient to assemble and disassemble; the galvanizing passivation technology is adopted, so that the service life is prolonged; and the damping performance is good, and the wear resistance is also relatively good at the same time.