Motor aluminum alloy shell casting for new energy automobile

Abstract

The invention relates to the technical field of automobile motor shell castings, in particular to a motor aluminum alloy shell casting for a new energy automobile, which comprises four groups of aerodynamic force propulsion mechanisms arranged in an air exhaust pressure reduction mechanism, a tail end current conversion mechanism arranged at one end of the air exhaust pressure reduction mechanism and a head end casting mechanism arranged at the other end of the air exhaust pressure reduction mechanism. The air exhaust pressure reduction mechanism comprises two main side wing plates and two auxiliary side wing plates, and two air inlet grooves are formed in the inner walls of the main side wing plates. A pump shell structure of an existing straight-through structure is arranged to be the air exhaust pressure reduction mechanism, and the four sets of aerodynamic force propelling mechanisms are evenly distributed in the air exhaust pressure reduction mechanism. And high-pressure airflow can be transferred into the two main side wing plates and the two auxiliary side wing plates through the four sets of aerodynamic force propelling mechanisms, and finally the airflow released through slow pressure can be prevented from being overloaded due to the fact that the pressure difference is too large in the releasing period.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive motor housing castings, and particularly to an aluminum alloy housing casting for a motor of a new energy vehicle. Background Art

[0002] The motors in new energy vehicles can be divided into various types such as AC motors, DC motors, AC / DC dual-purpose motors, control motors (including stepping, tachometric, servo, synchro, etc.), switched reluctance motors, and signal motors, and the housing is the most important part of the motor.

[0003] During the actual operation of new energy vehicles, affected by the pre-cast housing, the heat dissipation, grounding, and windings of the motor will all be affected. Although the existing motor housings are more mature in optimizing the above problems, different from the problems existing in the above housings, there are still the following problems: When the rotor inside the motor rotates at high speed and sucks the outside air into the pump housing, the cavity between the rotor and the pump housing will generate instantaneous high pressure, and the airflow generated by the instantaneous high pressure will affect the output power and efficiency of the motor, and seriously affect the safety of the rotor operation.

[0004] In view of this, an aluminum alloy housing casting for a motor of a new energy vehicle is designed in this application to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] For this reason, the technical solution adopted by the present invention is as follows: An aluminum alloy housing casting for a motor of a new energy vehicle, including an air extraction and pressure reduction mechanism, four aerodynamic propulsion mechanisms arranged inside the air extraction and pressure reduction mechanism, a tail-end commutation mechanism arranged at one end of the air extraction and pressure reduction mechanism, and a head-end casting mechanism arranged at the other end of the air extraction and pressure reduction mechanism; the air extraction and pressure reduction mechanism includes two main wing plates and two auxiliary wing plates, two air intake grooves are opened on the inner wall of the main wing plate, and two air collecting grooves are opened on the inner wall of the auxiliary wing plate; the aerodynamic propulsion mechanism includes a stator gasket arranged inside the adjacent main wing plate and auxiliary wing plate, a protective cover installed in the middle of the stator gasket, and a pressure push rod movably installed inside the protective cover, and air windows are opened on the outer wall of the protective cover; the tail-end commutation mechanism includes a housing and a return backing plate arranged at one end of the two main wing plates and two auxiliary wing plates; the head-end casting mechanism includes a cover arranged at the other end of the two main wing plates and two auxiliary wing plates, a shaft sleeve arranged inside the cover, and a base arranged inside the cover.

[0007] In a preferred embodiment, the present invention can be further configured as follows: The tail-end commutation mechanism further includes a limit end installed in the middle of the housing, a base disposed inside the return backing plate, and a ventilation component disposed inside the limit end and the base; The ventilation component includes a gasket installed inside the base, a cold air input member movably installed inside the gasket, a pressure release gasket disk movably installed outside the tube body of the cold air input member, two guide rods installed at the inner end of the pressure release gasket disk, and a plug installed on the two guide rods, and the plug is adapted to penetrate through the tube body inside the cold air input member; The outer end of the pressure release gasket disk is connected with a second tension spring, and the other end of the second tension spring is connected to the limit end.

[0008] In a preferred embodiment, the present invention can be further configured as follows: The aerodynamic propulsion mechanism further includes a gasket installed in the hole on the inner wall of the stator gasket, a plug column disposed inside the gasket, a first tension spring connected to the gasket, and the other end of the first tension spring is connected to the plug column; The inner cavity of the stator gasket is provided with two symmetrically distributed propulsion rods; The propulsion rod is composed of a plurality of trapezoidal pads and beam rods, and a clamping plate is installed at the outer end of the beam rod; The outer end of the pressure push rod is installed inside the clamping plate.

[0009] In a preferred embodiment, the present invention can be further configured as follows: The air extraction and pressure reduction mechanism further includes four groups of first conduits installed on two sub-side wing plates and four groups of external connecting pipes connected to four of the first conduits; The tail-end commutation mechanism further includes four second conduits; The head-end casting mechanism further includes four third conduits; Four of the external connecting pipes are connected to the four second conduits, and the other four external connecting pipes are connected to the four third conduits.

[0010] In a preferred embodiment, the present invention can be further configured as follows: The pressure release gasket disk is provided with a plurality of uniformly distributed insertion blocks at one end away from the two guide rods, and the insertion blocks on the pressure release gasket disk are adapted to penetrate through the inside of the limit end.

[0011] In a preferred embodiment, the present invention can be further configured as follows: The air extraction and pressure reduction mechanism further includes four groups of first anti-collision plates; The tail-end commutation mechanism further includes four groups of second anti-collision plates; The head-end casting mechanism further includes four groups of third anti-collision plates; The first anti-collision plate, the second anti-collision plate and the third anti-collision plate are all made of stainless steel material, and the first anti-collision plate is provided with uniformly distributed reinforcing backing plates, and plugs are arranged in the holes inside the reinforcing top plates.

[0012] In a preferred example, the present invention can be further configured as follows: The first tension spring is integrally in a T-shaped structure, and the end of the first tension spring penetrating into the inner cavity of the stator gasket is provided with a limit card slot adapted to the trapezoidal cushion block, and a sealing ring is provided on the stud at the other end of the first tension spring.

[0013] In a preferred example, the present invention can be further configured as follows: A cylindrical hole is provided inside the protective cover, the stud at the inner end of the pressure push rod is adapted to fit inside the cylindrical hole, and the cylindrical hole communicates with the air window.

[0014] In a preferred example, the present invention can be further configured as follows: A cavity is provided inside the reflux backing plate, and the limit end is adapted to penetrate into the cavity inside the reflux backing plate.

[0015] In a preferred example, the present invention can be further configured as follows: The cold air input member is composed of a circular pad and a pipe, and a chute adapted to the side end plates on both sides of the plug is provided at the port where the pipe penetrates to the inner side of the gasket; A through hole with a gradually changing aperture is provided at the inner end of the pipe.

[0016] By adopting the above technical solutions, the beneficial effects obtained by the present invention are as follows: 1. In the present invention, the pump shell structure with the existing straight-through structure is set as an air extraction and decompression mechanism, and four groups of aerodynamic propulsion mechanisms are evenly arranged inside the air extraction and decompression mechanism. When the rotor rotates at a high speed and causes an instantaneous high-pressure air flow to appear in the inner cavity of the pump shell, the high-pressure air flow will be transferred through the four groups of aerodynamic propulsion mechanisms to the inside of the two main wing plates and the two secondary wing plates. Finally, the air flow with pressure relief can avoid the phenomenon of motor overload caused by excessive pressure difference during the release.

[0017] 2. In the present invention, a first-end casting mechanism is provided at the tail of the air extraction and decompression mechanism. When the high-pressure air flow released into the four wing plates enters the inner cavity of the reflux backing plate, under the push of the air pressure, the cold air input member will be pressed and extend towards the inner cavity of the pump shell until the cold air input member is instantaneously connected to the inner cavity of the pump shell. When the air flow in the inner cavity of the reflux backing plate is released outward from the limit end, the cold air input into the inner cavity of the pump shell will also be instantaneously cut off, ensuring the balanced decompression of the rotor inside the motor and at the same time ensuring the safe operation of the rotor.

[0018] 3. In the present invention, at the moment when the high-pressure air flow inside the pump shell is released, the cold air released along the cold air input member into the pump shell can enter from the tail ends of the rotor and the stator, and finally carry the high temperature in the inner cavity of the pump shell into the first-end casting mechanism. The air flow after heat exchange will enter from the gap on the inner wall of the cover, and under the cooperation of the conduit and the external connection pipe, the air flow after heat exchange will be regularly emptied. Description of the Drawings

[0019] Figure 1Schematic diagram when the present invention is in use; Figure 2 Schematic diagram of the head casting mechanism of the present invention; Figure 3 Schematic diagram of the tail end commutation mechanism of the present invention; Figure 4 Schematic diagram of the air exchange component of the present invention; Figure 5 Schematic diagram of the air extraction and pressure reduction mechanism of the present invention; Figure 6 For the present invention Figure 5 explosion schematic diagram; Figure 7 Partial sectional view schematic diagram of the secondary side wing plate of the present invention; Figure 8 Partial sectional view schematic diagram of the main side wing plate of the present invention; Figure 9 Schematic diagram of the aerodynamic propulsion mechanism of the present invention; Figure 10 For the present invention Figure 9 explosion schematic diagram.

[0020] Reference numerals: 100, air extraction and pressure reduction mechanism; 110, main side wing plate; 120, secondary side wing plate; 130, first anti-collision plate; 131, reinforcement backing plate; 140, plug; 150, first conduit; 160, external connection pipe; 170, air intake groove; 180, air collecting groove; 200, aerodynamic propulsion mechanism; 210, stator gasket; 220, gasket; 230, protective cover; 240, propulsion rod; 250, pressure push rod; 260, clamping plate; 270, first tension spring; 280, plug column; 290, air window; 300, tail end commutation mechanism; 310, housing; 320, return backing plate; 330, second anti-collision plate; 340, second conduit; 350, limit end; 360, base; 370, air exchange component; 371, gasket; 372, cold air input component; 373, pressure release gasket disc; 374, second tension spring; 375, guide rod; 376, plug head; 400, head casting mechanism; 410, cover; 420, third anti-collision plate; 430, bushing; 440, base; 450, third conduit. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0023] Some embodiments of the present invention will be described below in conjunction with the accompanying drawings to provide an aluminum alloy shell casting for an electric motor of a new energy vehicle.

[0024] Embodiment 1: Combined with Figures 1 to 10 As shown, an aluminum alloy shell casting for an electric motor of a new energy vehicle provided by the present invention includes an air extraction and decompression mechanism 100, four aerodynamic propulsion mechanisms 200 arranged inside the air extraction and decompression mechanism 100, a tail-end commutation mechanism 300 arranged at one end of the air extraction and decompression mechanism 100, and a head-end casting mechanism 400 arranged at the other end of the air extraction and decompression mechanism 100. The four aerodynamic propulsion mechanisms 200 are used to provide a stability enhancement platform for the stator and a pressure relief channel for the instantaneous high-pressure air flow in the pump shell cavity. The air extraction and decompression mechanism 100 is used to provide an effective evacuation channel for the pressure-relieved air flow and the air flow after subsequent heat exchange. The tail-end commutation mechanism 300 is used to evacuate the heat exchange air flow while inputting the cooling air flow into the pump shell cavity. The head-end casting mechanism 400 is used to regularly guide and output the hot air in the pump shell cavity.

[0025] The air extraction and decompression mechanism 100 includes two main side wing plates 110 and two sub-side wing plates 120. Two air intake grooves 170 are opened on the inner wall of the main side wing plate 110, and two air collecting grooves 180 are opened on the inner wall of the sub-side wing plate 120; The aerodynamic propulsion mechanism 200 includes a stator gasket 210 arranged inside the adjacent main side wing plate 110 and sub-side wing plate 120, a protective cover 230 installed in the middle of the stator gasket 210, a pressure push rod 250 movably installed inside the protective cover 230. An air window 290 is opened on the outer wall of the protective cover 230, a gasket 220 installed in the inner wall hole of the stator gasket 210, a plug column 280 arranged inside the gasket 220, a first tension spring 270 connected to the gasket 220, and the other end of the first tension spring 270 is connected to the plug column 280; Two symmetrically distributed propulsion rods 240 are arranged inside the cavity of the stator gasket 210; The propulsion rod 240 is composed of a plurality of trapezoidal pads and beam rods, and a clamping plate 260 is installed at the outer end of the beam rod; The outer end of the pressure push rod 250 is installed inside the clamping plate 260; The tail-end commutation mechanism 300 includes a housing 310 and a return flow backing plate 320 arranged at one end of the two main side wing plates 110 and the two sub-side wing plates 120, a limit end 350 installed in the middle of the housing 310, a base 360 arranged inside the return flow backing plate 320, and a gas exchange component 370 arranged inside the limit end 350 and the base 360; The head casting mechanism 400 includes a cover 410 disposed at the other ends of the two main side wings 110 and the two secondary side wings 120, a bushing 430 disposed within the cover 410, and a base 440 disposed within the cover 410; The ventilation assembly 370 includes a gasket 371 installed inside the base 360, a cold air input member 372 movably installed inside the gasket 371, a pressure relief gasket disc 373 movably installed outside the tube body of the cold air input member 372, two guide rods 375 installed at the inner end of the pressure relief gasket disc 373, and a plug 376 installed on the two guide rods 375, and the plug 376 is adapted to penetrate through the tube body inside the cold air input member 372; The outer end of the pressure relief gasket disc 373 is connected to a second tension spring 374, and the other end of the second tension spring 374 is connected to the limit end 350.

[0026] When the stator and the rotor are installed in the cavity formed by the casting, with the high-speed rotation of the rotor, when the outside air is inhaled into the cavity, an instantaneous high pressure will be generated. After the pressure in the inner cavity of the pump housing suddenly increases and is forced to relieve pressure, the motor with a large slip ratio will be overloaded, and in severe cases, the rotor speed will be unbalanced; As the air pressure in the inner cavity of the pump housing increases, the high-pressure air flow will apply a squeezing force to the four pressure push rods 250 along the four protective covers 230. Eventually, the pressed pressure push rods 250 will push the clamping plate 260 to move outward horizontally, and the two push rods 240 connected to both ends of the clamping plate 260 will extrude the evenly distributed multiple plug columns 280 outward. The high-pressure air flow will enter the inside of the protective cover 230 from the inner cavity of the pump housing and be input into the inner cavity of the stator gasket 210 along the air window 290. Eventually, the high-pressure air flow will be input into the cavity formed by the gasket 220, the air intake groove 170, and the air collecting groove 180; According to the usage requirements, the third conduit 450 can be sealed using a screw sleeve, and the four first conduits 150 close to the four third conduits 450 can also be sealed using a screw sleeve. At this time, the other four first conduits 150 and the four external connecting pipes 160 can transfer the instantaneous high pressure to the gap inside the return backplate 320. The pressure relief gasket disc 373, the guide rods 375, and the plug 376 pushed by the high-pressure air flow will extend towards the inside of the pump housing. At this time, the cooling air flow can be input into the pump housing along the pipe inside the cold air input member 372, and the high-pressure air flow can be safely released outward from the limit end 350.

[0027] At the same time, after the cooling air flow input from the pipe inside the cold air input member 372 enters the inner cavity of the pump housing, the heat energy in the inner cavity of the pump housing can also be regularly carried and discharged.

[0028] Embodiment 2: Combined with Figures 2 to 8As shown, on the basis of Embodiment 1, the air extraction and pressure reduction mechanism 100 further includes four groups of first conduits 150 installed on two secondary side wing plates 120 and four groups of external connecting pipes 160 connected to the four groups of first conduits 150; Preferably, two first conduits 150 form a group, and two external connecting pipes 160 form a group. Therefore, the number of the four groups of first conduits 150 is eight, and the number of the four groups of external connecting pipes 160 is also eight.

[0029] The tail-end commutation mechanism 300 further includes four second conduits 340; The head-end casting mechanism 400 further includes four third conduits 450; Among them, four external connecting pipes 160 are connected to the four second conduits 340, and the other four external connecting pipes 160 are connected to the four third conduits 450.

[0030] During actual use, four of the four third conduits 450 and four of the first conduits 150 can be docked with four external connecting pipes 160 according to the air pressure flow direction, so that the air pressure in the pump housing cavity can be subjected to constant pressure treatment, thereby avoiding the phenomenon of instantaneous high-pressure air flow in the pump housing cavity. The constant-pressure air flow can continuously push the pressure release gasket 373 towards the inside of the cushion 371. At this time, the pipeline in the cold air input part 372 can continuously input the cooling air flow into the pump housing to achieve the purpose of cooling.

[0031] A cavity is formed inside the return flow backing plate 320, and the limit end 350 is adapted to penetrate into the cavity inside the return flow backing plate 320; The cold air input part 372 is composed of a circular gasket and a pipeline, and a chute adapted to the two end plates on both sides of the plug 376 is provided at the port of the pipeline penetrating to the inside of the cushion 371; A through hole with a gradually changing aperture is provided at the inner end of the pipeline; A plurality of evenly distributed insertion blocks are provided at one end of the pressure release gasket 373 away from the two guide rods 375, and the insertion blocks on the pressure release gasket 373 are adapted to penetrate into the inside of the limit end 350.

[0032] Preferably, a sealing ring is provided on the outer wall of the pressure release gasket 373, and lubricating oil is coated between the sealing ring and the cushion 371. Among them, the plug head of the plug 376 is adapted to penetrate into the gradually changing through hole of the inner pipe body of the cold air input part 372. When the four third conduits 450 and the four first conduits 150 facing the cover 410 are all blocked, a sealed and safe auxiliary rotation space can be provided for the rotor in the pump housing cavity.

[0033] Embodiment 3: Combined with Figures 2 to 5 As shown, on the basis of Embodiment 1, the air extraction and pressure reduction mechanism 100 further includes four groups of first anti-collision plates 130; The tail-end commutation mechanism 300 further includes four groups of second anti-collision plates 330; The head-end casting mechanism 400 further includes four groups of third anti-collision plates 420; The first anti-collision plate 130, the second anti-collision plate 330, and the third anti-collision plate 420 are all made of stainless steel material, and evenly distributed reinforcing pads 131 are provided on the first anti-collision plate 130, and plugs 140 are provided in the holes inside the reinforcing pads 131.

[0034] Preferably, the four groups of first anti-collision plates 130 are installed in the grooves between the two main side wing plates 110 and the two sub-side wing plates 120. The first anti-collision plate 130 made of the reinforcing pad 131 can improve the resistance to external force impact; The four second anti-collision plates 330 and the four third anti-collision plates 420 can enhance the compressive strength at the head and tail ends of the casting, thereby improving the stability of the gap between the inner walls of the return pad 320 and the cover 410.

[0035] Embodiment 4: Combined with Figure 9 and Figure 10 As shown, in the above embodiment, the first tension spring 270 is integrally in a T-shaped structure, and the end of the first tension spring 270 penetrating into the inner cavity of the stator gasket 210 is provided with a limit card slot adapted to the trapezoidal pad, and a sealing ring is provided on the stud at the other end of the first tension spring 270; A cylindrical hole is provided inside the protective cover 230, the stud at the inner end of the pressure push rod 250 is adapted to fit inside the cylindrical hole, and the cylindrical hole communicates with the air window 290.

[0036] Preferably, a transverse groove is provided in the middle of the inner arc surface of the stator gasket 210, and the transverse groove on the inner arc surface of the inner wall of the stator gasket 210 communicates with the inner cavity of the protective cover 230. When high-pressure air flow is generated inside the pump housing due to the high-speed rotation of the rotor, the air flow will push the pressure push rod 250 to extend out along the inside of the protective cover 230. Finally, the clamping plate 260 installed at the outer end of the pressure push rod 250 can drive the two push rods 240 to move outward under constant pressure. At this time, multiple plug columns 280 can be withdrawn from the stator gasket 210, and finally the high-pressure air flow in the pump housing in a closed state can be released regularly and slowly.

[0037] The working principle and usage process of the present invention: During the use of the motor in a new energy vehicle, an air extraction phenomenon will occur. This phenomenon is caused by the air being sucked into the space between the rotor and the pump housing during the high-speed rotation of the rotor. This air extraction pressure is extremely high, and the instantaneous increase in air pressure will pose a safety hazard to the rotation of the rotor; The castings in the present invention are different from traditional pump casings. By providing two main wing plates 110 and two secondary wing plates 120 that are symmetrically distributed, two air intake grooves 170 opened on the inner wall of the main wing plate 110 are in communication with two air collecting grooves 180 on the inner wall of the secondary wing plate 120, and a plurality of plugs 140 will block the air holes outside the main wing plate 110 and the secondary wing plate 120.

[0038] When the head casting mechanism 400 and the tail-end commutation mechanism 300 cooperate with the two main wing plates 110 and the two secondary wing plates 120 to provide a safe operating space for the rotor and the stator, as the rotor rotates at high speed, when air is inhaled from the shaft sleeve 430 into the cavity between the rotor and the pump casing, the air pressure that suddenly increases due to the high-speed rotation of the rotor will squeeze into the transverse grooves on the inner walls of the four protective covers 230. At this time, the pressure push rod 250 under the action of the air pressure will extend outward along the inner cavity of the protective cover 230 until the inner end stud of the pressure push rod 250 contracts into the inner cavity of the protective cover 230. At this time, the cavity between the rotor and the pump casing will communicate with the inner cavity of the stator gasket 210 through the air window 290, and the pressure push rod 250 after pressure relief will quickly reset. At the same time, the continuously increasing air pressure in the inner cavity of the stator gasket 210 will push a plurality of evenly distributed plug columns 280 to extend outward; At this time, the outer end plugs of the plug columns 280 will extrude outward from the slot holes on the outer wall of the stator gasket 210, and the inner cavity of the stator gasket 210 can form an effective exhaust channel with the air intake groove 170 and the air collecting groove 180 through the gasket 220. Finally, the discharged air pressure will be released outward along the four outer connecting pipes 160 into the inner cavity of the return backing plate 320. Under the action of the air pressure, the pressure release pad disk 373 will extend into the inner cavity of the gasket 371 until a plurality of inserts provided at the outer end of the pressure release pad disk 373 withdraw from the limit end heads 350. The boosted guide rod 375 and the plug 376 will extend out of the pipe of the cold air input member 372, and the pipe in the cold air input member 372 can input the cooling air flow into the pump casing. At the same time, the air flow inside the return backing plate 320 will be released outward from the holes of the limit end heads 350.

[0039] Therefore, while the motor housing casting prevents instantaneous pressure increase and air extraction for the rotor, it can also efficiently cool down the inner cavity of the pump casing after pressure relief until the rotor operates safely in a constant temperature and constant pressure space.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor aluminum alloy housing casting for new energy vehicles, characterized in that: It comprises four groups of pneumatic propulsion mechanisms (200) arranged in an air extraction and decompression mechanism (100), a tail end flow conversion mechanism (300) arranged at one end of the air extraction and decompression mechanism (100), and a head end casting mechanism (400) arranged at the other end of the air extraction and decompression mechanism (100); The air extraction and decompression mechanism (100) comprises two main side wing plates (110) and two auxiliary side wing plates (120); the inner wall of the main side wing plates (110) is provided with two air inlet grooves (170); the inner wall of the auxiliary side wing plates (120) is provided with two air collection grooves (180); The pneumatic propulsion mechanism (200) comprises a stator pad (210) arranged on the inner side of adjacent primary wing plates (110) and secondary wing plates (120), a protective cover (230) installed in the middle of the stator pad (210), and a pressure push rod (250) movably installed inside the protective cover (230), and an air window (290) is provided on the outer wall of the protective cover (230); The tail end flow conversion mechanism (300) comprises a housing (310) and a return pad (320) arranged at one end of two main side wing plates (110) and two secondary side wing plates (120).

2. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 1 is characterized in that: The tail-end flow conversion mechanism (300) further comprises a limiting end head (350) installed in the middle of the housing (310), a base (360) arranged inside the return pad (320), and a ventilation component (370) arranged inside the limiting end head (350) and the base (360); The ventilation assembly (370) comprises a protective pad (371) installed inside the base (360), a cold air input member (372) movably installed inside the protective pad (371), a pressure relief pad (373) movably installed outside the tube body of the cold air input member (372), two guide rods (375) installed on the inner end of the pressure relief pad (373), and plugs (376) installed on the two guide rods (375), and the plugs (376) are adapted to penetrate into the tube body inside the cold air input member (372); The outer end of the pressure relief pad (373) is connected to a second tension spring (374), and the other end of the second tension spring (374) is connected to the limiting end (350).

3. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 2 is characterized in that: The cold air input member (372) is composed of a circular pad and a pipe, and the pipe passes through the port on the inner side of the pad (371) and is provided with a slide groove adapted to the end plates on both sides of the plug (376); A through hole with a gradually changing aperture is provided at the inner end of the pipe; A plurality of evenly distributed plug blocks are provided at one end of the pressure relief pad (373) away from the two guide rods (375), and the plug blocks on the pressure relief pad (373) are adapted to penetrate into the interior of the limit end (350).

4. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 1 is characterized in that: The pneumatic propulsion mechanism (200) further comprises a gasket (220) installed in a hole on the inner wall of the stator protective pad (210), a plug (280) arranged in the gasket (220), a first tension spring (270) connected to the gasket (220), and the other end of the first tension spring (270) is connected to the plug (280); The inner cavity of the stator protective pad (210) is provided with two symmetrically distributed propulsion rods (240); The propulsion rod (240) is composed of a plurality of trapezoidal pads and a beam rod, and a clamping plate (260) is installed at the outer end of the beam rod; The outer end of the pressure push rod (250) is mounted inside the clamping plate (260).

5. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 4 is characterized in that: The first tension spring (270) is in a T-shaped structure as a whole, and the end of the first tension spring (270) that passes through the inner cavity of the stator protection pad (210) is provided with a limiting slot adapted to fit the trapezoidal pad, while a sealing ring is provided on the column head at the other end of the first tension spring (270).

6. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 1, characterized in that: The head end casting mechanism (400) comprises a cover (410) arranged at the other end of the two main side wing plates (110) and the two secondary side wing plates (120), a shaft sleeve (430) arranged in the cover (410), and a base (440) arranged in the cover (410).

7. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 6 is characterized in that: The air extraction and decompression mechanism (100) further comprises four groups of first conduits (150) mounted on the two secondary side wing plates (120) and four groups of external conduits (160) connected to four of the first conduits (150); The tail end flow conversion mechanism (300) further includes four second conduits (340); The first end casting mechanism (400) further comprises four third conduits (450); Four of the external tubes (160) are connected to the four second tubes (340), and another four of the external tubes (160) are connected to the four third tubes (450).

8. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 6 is characterized in that: The air extraction and decompression mechanism (100) further comprises four sets of first anti-collision plates (130); The tail end flow conversion mechanism (300) further includes four sets of second anti-collision plates (330); The head end casting mechanism (400) further comprises four sets of third anti-collision plates (420); The first anti-collision plate (130), the second anti-collision plate (330) and the third anti-collision plate (420) are all made of stainless steel, and evenly distributed reinforcing pads (131) are provided on the first anti-collision plate (130), and plugs (140) are provided in the holes inside the reinforcing top plate.

9. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 1, characterized in that: A cylindrical hole is provided inside the protective cover (230), the column head at the inner end of the pressure push rod (250) is adapted to fit in the cylindrical hole, and the cylindrical hole is connected to the air window (290).

10. The aluminum alloy housing casting for a motor for a new energy vehicle according to claim 1, characterized in that: A cavity is provided inside the reflow pad (320), and the limiting end (350) is adapted to penetrate into the cavity inside the reflow pad (320).

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