New energy automobile motor shell assembly

Abstract

The invention relates to the technical field of new energy automobile motors, and discloses a new energy automobile motor shell assembly, and the outer side of an inner side shell is sleeved with an outer protection shell, so that cooling liquid circularly flows in a circulating flow channel; an open annular sealing piece is arranged in an open annular groove in the outer wall of the tail end of the inner side shell, and an inner sealing bag and an outer sealing bag are arranged on the inner side and the outer side of the open annular sealing piece respectively; the sealing process is automatically achieved through cooperation of the bolt and the driving assembly, air in the cylinder body is automatically pressed into the sealing bag along with locking of the bolt, the sealing bag is expanded to achieve sealing, extra manual operation is not needed, and the installation efficiency and the sealing reliability are improved; by adopting the combined sealing mode of the open annular sealing element, the inner sealing bag and the outer sealing bag, the multi-sealing effect is realized, the sealing performance between the inner side shell and the outer protective shell is greatly improved, the leakage of cooling liquid and the entering of impurities such as external dust and moisture into the motor are prevented, and the normal operation of the motor is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle motors, and in particular to a new energy vehicle motor housing assembly. Background Art

[0002] New energy vehicle motors generate significant heat during operation. If heat isn't dissipated promptly and effectively, the motor's temperature will continue to rise. High temperatures can negatively impact motor performance, reducing efficiency, shortening service life, and even damaging the motor, impacting the proper operation of new energy vehicles. Therefore, new energy vehicle motor housing assemblies utilize a modular assembly system to allow coolant to circulate within the housing, ensuring optimal heat dissipation.

[0003] The assembled motor housing components of new energy vehicles require a relatively sealed environment to prevent coolant leakage. Coolant leakage not only affects the heat dissipation of the motor, but may also damage other components of the motor. At the same time, it is also necessary to prevent foreign impurities such as dust and moisture from entering the motor, as these impurities may cause short circuits in the electrical components inside the motor, wear on the mechanical components, and other problems, reducing the reliability and stability of the motor. Existing motor housing components may not be perfect in terms of sealing design, lacking effective sealing structures and sealing methods, making it difficult to ensure good sealing between the various components of the motor housing, and thus unable to provide a reliable operating environment for the motor. To this end, we have introduced a new energy vehicle motor housing component. Summary of the Invention

[0004] The purpose of the present invention is to provide a new energy vehicle motor housing assembly to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A new energy vehicle motor housing assembly includes an inner housing, a circulation flow channel is provided on the outer wall of the inner housing, and an outer protective housing is sleeved on the outer side of the inner housing, so that a coolant circulates in the circulation flow channel;

[0007] An open annular seal is provided in the open annular groove on the outer wall of the inner shell end, and an inner sealing bag and an outer sealing bag are provided on the inner and outer sides of the open annular seal respectively;

[0008] An installation cavity is provided at the opening of the open annular groove, and a drive assembly is provided in the installation cavity. After the bolts on the outer protective shell are locked with the drive assembly, the drive assembly presses the air in the cylinder on the side wall of the installation cavity into the inner sealing bag and the outer sealing bag. After the inner sealing bag and the outer sealing bag expand, the seal between the inner shell and the outer protective shell is achieved.

[0009] Preferably, a limit plate is provided inside the inner shell, a bearing for being sleeved on the rotor shaft is provided in the middle of the limit plate, a coolant inlet connected to the circulation flow channel is provided on the limit plate, and a coolant outlet is provided at the other end of the circulation flow channel.

[0010] Preferably, a receiving cavity for receiving the inner sealing capsule is provided on the inner side of the open annular seal, V-shaped frames are evenly spaced on the side walls of the receiving cavity, and the upper and lower ends of the V-shaped frames are respectively connected to the top wall and bottom wall of the receiving cavity.

[0011] Preferably, two sets of upper and lower receiving slots for receiving the outer sealing capsule are provided on the outer side of the open annular sealing member.

[0012] Preferably, the driving assembly includes a driving arm movably connected to the mounting cavity by a connecting shaft, an arcuate outer tooth plate connected to one end of the driving arm, a tensioning plate connected to the other end of the driving arm, and gears symmetrically distributed and meshing with the arcuate outer tooth plate;

[0013] A piston is slidably connected inside the cylinder, an end cover is fixed to the inner end of the cylinder, and a screw fixed in the middle of the piston passes through the end cover and is fixed to the middle of the corresponding gear;

[0014] The screw rod is screwed to the middle part of the end cover through the threads thereon.

[0015] Preferably, a slot is provided in the middle of the tensioning plate, and a locking nut is connected to the side of the tensioning plate using a metal connecting arm, and the bolt passes through the slot and is locked and fixed with the locking nut.

[0016] Preferably, a rubber sealing ring is sleeved on the outer side of the piston.

[0017] Preferably, the ends of the inner sealing bag and the outer sealing bag are communicated with the corresponding cylinder bodies.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the sealing process of the present invention is automatically realized through the cooperation of the bolts and the drive assembly. As the bolts are tightened, the air in the cylinder is automatically pressed into the sealing bag, causing the sealing bag to expand and achieve sealing. No additional manual operation is required, thereby improving installation efficiency and sealing reliability. A combined sealing method of an open annular seal and an inner sealing bag and an outer sealing bag is adopted. The inner sealing bag seals the side wall of the open annular groove, the outer sealing bag seals the inner wall of the outer protective shell, and the V-shaped frame assists in sealing the upper and lower ends of the inner side of the open annular seal, thereby achieving multiple sealing effects, greatly improving the sealing between the inner shell and the outer protective shell, preventing coolant leakage and external impurities such as dust and moisture from entering the interior of the motor, and protecting the normal operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the first three-dimensional structure of the inner shell of the present invention;

[0021] Figure 3 This is a schematic diagram of a second three-dimensional structure of the inner shell of the present invention;

[0022] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the open annular seal of the present invention;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the open annular seal of the present invention;

[0025] Figure 7 This is a structural schematic diagram of the relative positions of the inner sealing capsule and the outer sealing capsule of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the assembly of the open annular seal and the inner shell of the present invention;

[0027] Figure 9 For the present invention Figure 8 The enlarged structural diagram at B in the middle;

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of the inner sealing bag, the outer sealing bag and the open annular sealing member assembled according to the present invention;

[0029] Figure 11 This is a structural diagram of the relative positions of the gear and the arc-shaped external gear plate in the initial state of the present invention;

[0030] Figure 12 This is a structural schematic diagram of the relative positions of the gear and the arc-shaped outer tooth plate in the bolt-locked state of the present invention;

[0031] Figure 13 It is a schematic cross-sectional structural diagram of the present invention as a whole;

[0032] Figure 14 For the present invention Figure 13 The enlarged structural diagram at C in the middle;

[0033] Figure 15 For the present invention Figure 13 Enlarged structural diagram at point D in the middle.

[0034] In the figure: 1. Inner shell; 101. Coolant inlet; 102. Bearing; 103. Circulating flow channel; 104. Coolant outlet; 105. Sealing gasket; 106. Open annular groove; 107. Mounting cavity; 108. Cylinder body; 109. End cover; 110. Connecting shaft; 2. Outer protective shell; 3. Open annular seal; 301. Accommodating cavity; 302. V-shaped frame; 303. Accommodating slot; 4. Inner sealing capsule; 5. Outer sealing capsule; 6. Gear; 7. Screw; 8. Arc-shaped outer tooth plate; 9. Tension plate; 91. Slot; 92. Metal connecting arm; 93. Locking nut; 10. Driving arm; 11. Piston; 12. Rubber sealing ring; 13. Bolt. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-15 , the present invention provides a technical solution:

[0037] A new energy vehicle motor housing assembly includes an inner housing 1, a circulation flow channel 103 is provided on the outer wall of the inner housing 1, and an outer protective housing 2 is sleeved on the outer side of the inner housing 1, so that a coolant circulates in the circulation flow channel 103;

[0038] A limit plate is provided inside the inner shell 1, and the motor rotor is set inside the inner shell 1. A bearing 102 for being sleeved on the rotor shaft is provided in the middle of the limit plate. A coolant inlet 101 connected to the circulation flow channel 103 is provided on the limit plate, and the other end of the circulation flow channel 103 is connected to the coolant outlet 104.

[0039] The coolant enters the circulation channel 103 through the coolant inlet 101 and finally flows out through the coolant outlet 104 , so that the coolant circulates inside the circulation channel 103 , thereby achieving rapid heat dissipation of the inner shell 1 and the outer protective shell 2 .

[0040] The circulation flow channel 103 is arranged on the outer wall of the inner shell 1. This design allows the coolant to fully contact the inner shell 1 and the outer protective shell 2, thereby improving the heat dissipation efficiency without affecting the overall structural strength of the motor housing.

[0041] An open annular seal 3 is provided in the open annular groove 106 on the outer wall of the end of the inner shell 1, and an inner sealing bag 4 and an outer sealing bag 5 are provided inside and outside the open annular seal 3 respectively; the ends of the inner sealing bag 4 and the outer sealing bag 5 are connected to the corresponding cylinder body 108.

[0042] An accommodating chamber 301 for accommodating the inner sealing bag 4 is provided on the inner side of the open annular seal 3. When the bolt 13 is locked with the tensioning plate 9, the tensioning plate 9 drives the arc-shaped outer tooth plate 8 to rotate through the driving arm 10, and the arc-shaped outer tooth plate 8 then drives the screw 7 to rotate through the gear 6, so that the screw 7 pushes the piston 11 further into the cylinder 108, and presses part of the air in the cylinder 108 into the inner sealing bag 4, so that the inner sealing bag 4 is tightly attached to the side wall of the open annular groove 106 after expansion, and the inner sealing bag 4 blocks the accommodating chamber 301, thereby further improving the sealing effect between the inner wall of the open annular seal 3 and the open annular groove 106, and increasing the sealing performance of the open annular seal 3 at the connection between the inner shell 1 and the outer protective shell 2;

[0043] The outer side of the open annular seal 3 is provided with two upper and lower groups of receiving slots 303 for accommodating the outer sealing capsule 5. In this way, the outer sealing capsule 5 is provided with two upper and lower groups. After the outer sealing capsule 5 is expanded, the outer wall of the open annular seal 3 is sealed with the inner wall of the outer protective shell 2, thereby improving the sealing performance of the open annular seal 3 at the connection between the inner shell 1 and the outer protective shell 2;

[0044] V-shaped frames 302 are distributed at equal intervals on the side wall of the accommodating chamber 301, and the upper and lower ends of the V-shaped frames 302 are respectively connected to the top wall and bottom wall of the accommodating chamber 301; after the outer sealing bag 5 enters the air and expands, the expansion of the outer sealing bag 5 will squeeze the open annular seal 3 inward, so that the V-shaped frame 302 in the accommodating chamber 301 is in an open state, and the upper and lower ends of the inner side of the accommodating chamber 301 gradually open, so that the upper and lower ends of the inner side of the open annular seal 3 are squeezed and respectively adhere to the top wall and bottom wall of the open annular groove 106, further improving the sealing effect of the inner wall of the open annular seal 3 and the open annular groove 106, and increasing the sealing performance of the open annular seal 3 at the connection between the inner shell 1 and the outer protective shell 2.

[0045] An installation cavity 107 is provided at the opening of the open annular groove 106, and a drive assembly is provided in the installation cavity 107;

[0046] The drive assembly includes a drive arm 10 movably connected to the mounting cavity 107 by a connecting shaft 110, an arcuate outer tooth plate 8 connected to one end of the drive arm 10, a tensioning plate 9 connected to the other end of the drive arm 10, and gears 6 symmetrically distributed and meshing with the arcuate outer tooth plate 8;

[0047] The piston 11 is slidably connected to the cylinder 108, and an end cover 109 is fixed to the inner end of the cylinder 108. The screw 7 fixed in the middle of the piston 11 passes through the end cover 109 and is fixed to the middle of the corresponding gear 6;

[0048] The screw rod 7 is threadedly connected to the middle of the end cover 109 through the threads thereon. With this arrangement, when the gear 6 drives the screw rod 7 to rotate, the screw rod 7 moves relative to the end cover 109, so that the screw rod 7 drives the piston 11 to further enter the cylinder body 108.

[0049] When the bolt 13 is tightened, the bolt 13 tightens the tensioning plate 9, so that the tensioning plate 9, the driving arm 10 and the arc-shaped external toothed plate 8 rotate counterclockwise as a whole with the connecting shaft 110 as the center, so that the arc-shaped external toothed plate 8 drives the screw 7 to rotate through the gear 6, so that the screw 7 pushes the piston 11 further into the cylinder 108, so that the piston 11 presses the air in the cylinder 108 into the inner sealing bag 4 and the outer sealing bag 5.

[0050] A slot 91 is provided in the middle of the tensioning plate 9 , and a locking nut 93 is connected to the side of the tensioning plate 9 using a metal connecting arm 92 . The bolt 13 passes through the slot 91 and is locked and fixed with the locking nut 93 .

[0051] When the bolt 13 and the locking nut 93 are gradually tightened and fixed, so that the tensioning plate 9, the driving arm 10 and the arc-shaped external toothed plate 8 rotate counterclockwise around the connecting shaft 110 as a circle center, the arrangement of the slot 91 ensures that after the tensioning plate 9 rotates, the bolt 13 will not hinder the counterclockwise rotation of the tensioning plate 9;

[0052] And when the bolt 13 is gradually tightened, the metal connecting arm 92 will be deformed until the locking nut 93 is close to the inner wall of the tensioning plate 9. Under the tightening action of the bolt 13, the tensioning plate 9, the driving arm 10 and the arc-shaped external toothed plate 8 as a whole rotate counterclockwise with the connecting shaft 110 as the center.

[0053] A rubber sealing ring 12 is sleeved on the outer side of the piston 11. After the piston 11 further enters the cylinder 108, the rubber sealing ring 12 can be used to seal the piston 11 and the inner wall of the cylinder 108, so that the air in the cylinder 108 can be pressed into the inner sealing bag 4 and the outer sealing bag 5 respectively.

[0054] After the bolts 13 on the outer protective shell 2 are locked with the drive assembly, the drive assembly presses the air in the cylinder 108 on the side wall of the installation cavity 107 into the inner sealing bag 4 and the outer sealing bag 5. After the inner sealing bag 4 and the outer sealing bag 5 expand, the seal between the inner shell 1 and the outer protective shell 2 is achieved.

[0055] The open annular groove 106 of the present invention can be arranged on the outer walls of the two ends of the inner shell 1, or an open annular groove 106 can be provided on the outer wall of one end of the inner shell 1, and a sealing gasket 105 is sleeved on the outer side of the other end of the inner shell 1, and the sealing gasket 105 is sealed between the inner shell 1 and the outer protective shell 2.

[0056] Specifically, when in use, the heat dissipation of the motor housing assembly of the new energy vehicle is mainly achieved by the circulation of the coolant in the circulation flow channel. A circulation flow channel 103 is provided on the outer wall of the inner shell 1, and a coolant inlet 101 is provided on the limit plate inside the inner shell 1. The other end of the circulation flow channel 103 is connected to the coolant outlet 104. When the motor generates heat during operation, the coolant enters the circulation flow channel 103 through the coolant inlet 101, absorbs the heat of the inner shell 1 and the outer protective shell 2 during the flow in the channel, and then flows out through the coolant outlet 104. Such a cycle can promptly take away the heat generated by the motor, effectively reduce the temperature of the motor housing, ensure that the motor operates in a suitable temperature environment, extend the service life of the motor, and improve the working efficiency and stability of the motor.

[0057] As the bolts 13 on the outer protective housing 2 and the locking nuts 93 on the tensioning plate 9 are gradually tightened, the bolts 13 tighten the tensioning plate 9, causing the tensioning plate 9, the drive arm 10, and the arcuate outer toothed plate 8 to rotate counterclockwise around the connecting shaft 110. The slot 91 in the center of the tensioning plate 9 ensures that the bolts 13 do not hinder its rotation during the rotation process. At the same time, the metal connecting arm 92 will deform until the locking nut 93 is tightly against the inner wall of the tensioning plate 9, completing the rotation of the drive assembly.

[0058] When the arc-shaped outer tooth plate 8 rotates counterclockwise, it meshes with the symmetrically distributed gears 6, driving the gears 6 to rotate. Because the screw 7 is fixed to the middle of the gear 6 and is threadedly connected to the middle of the end cap 109 via its threads, the rotation of the gear 6 drives the screw 7 to rotate, causing the screw 7 to move relative to the end cap 109, thereby pushing the piston 11 further into the cylinder 108.

[0059] After the piston 11 enters the cylinder 108, it compresses some of the air within the cylinder 108 into the inner and outer sealing bladders 4 and 5. The inner sealing bladder 4 is located within the accommodating chamber 301 inside the open annular seal 3. After the air enters, it expands and clings to the sidewalls of the open annular groove 106, sealing the accommodating chamber 301 and improving the sealing effect between the inner wall of the open annular seal 3 and the open annular groove 106. The outer sealing bladder 5 comprises two upper and lower groups, located within the accommodating slot 303 outside the open annular seal 3. After expansion, it seals the outer wall of the open annular seal 3 against the inner wall of the outer protective housing 2.

[0060] After the outer sealing bag 5 expands, it will squeeze the open annular seal 3 inward, so that the V-shaped frame 302 in the accommodating cavity 301 is in an open state, and the upper and lower ends of the inner side of the accommodating cavity 301 gradually open, so that the upper and lower ends of the inner side of the open annular seal 3 are squeezed and respectively adhere to the top wall and bottom wall of the open annular groove 106, further improving the sealing effect.

[0061] Multiple sealing: A combined sealing method of an open annular seal 3 and an inner sealing capsule 4 and an outer sealing capsule 5 is adopted. The inner sealing capsule 4 seals the side wall of the open annular groove 106, the outer sealing capsule 5 seals the inner wall of the outer protective shell 2, and the V-shaped frame 302 assists in sealing the upper and lower ends of the inner side of the open annular seal 3, thereby achieving a multiple sealing effect, greatly improving the sealing between the inner shell 1 and the outer protective shell 2, preventing coolant leakage and external impurities such as dust and moisture from entering the interior of the motor, and protecting the normal operation of the motor.

[0062] Automatic adjustment: The sealing process is automatically achieved through the cooperation between the bolt 13 and the drive assembly. As the bolt 13 is tightened, the air in the cylinder 108 is automatically pressed into the sealing bag, causing the sealing bag to expand and achieve sealing. No additional manual operation is required, which improves installation efficiency and sealing reliability.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle motor housing assembly, comprising an inner housing, characterized in that: A circulation flow channel is provided on the outer wall of the inner shell, and an outer protective shell is sleeved on the outer side of the inner shell, so that the coolant circulates in the circulation flow channel; An open annular seal is provided in the open annular groove on the outer wall of the inner shell end, and an inner sealing bag and an outer sealing bag are provided on the inner and outer sides of the open annular seal respectively; An installation cavity is provided at the opening of the open annular groove, and a drive assembly is provided in the installation cavity. After the bolts on the outer protective shell are locked with the drive assembly, the drive assembly presses the air in the cylinder on the side wall of the installation cavity into the inner sealing bag and the outer sealing bag. After the inner sealing bag and the outer sealing bag expand, the seal between the inner shell and the outer protective shell is achieved.

2. The new energy vehicle motor housing assembly according to claim 1, characterized in that: A limit plate is provided inside the inner shell, a bearing for being sleeved on the rotor shaft is provided in the middle of the limit plate, a coolant inlet connected to the circulation flow channel is provided on the limit plate, and a coolant outlet is provided at the other end of the circulation flow channel.

3. The new energy vehicle motor housing assembly according to claim 1, characterized in that: The inner side of the open annular seal is provided with an accommodating cavity for accommodating the inner sealing bag. V-shaped frames are evenly spaced on the side walls of the accommodating cavity, and the upper and lower ends of the V-shaped frames are respectively connected to the top wall and bottom wall of the accommodating cavity.

4. The new energy vehicle motor housing assembly according to claim 1, characterized in that: The outer side of the open annular sealing member is provided with two groups of upper and lower receiving slots for receiving the outer sealing bag.

5. The new energy vehicle motor housing assembly according to claim 1, characterized in that: The driving assembly includes a driving arm movably connected to the mounting cavity by a connecting shaft, an arc-shaped external tooth plate connected to one end of the driving arm, a tensioning plate connected to the other end of the driving arm, and gears symmetrically distributed and meshing with the arc-shaped external tooth plate; A piston is slidably connected inside the cylinder, an end cover is fixed to the inner end of the cylinder, and a screw fixed in the middle of the piston passes through the end cover and is fixed to the middle of the corresponding gear; The screw rod is screwed to the middle part of the end cover through the threads thereon.

6. The new energy vehicle motor housing assembly according to claim 5, characterized in that: A slot is provided in the middle of the tensioning plate, and a locking nut is connected to the side of the tensioning plate using a metal connecting arm. The bolt passes through the slot and is locked and fixed with the locking nut.

7. The new energy vehicle motor housing assembly according to claim 5, characterized in that: The outer side of the piston is sleeved with a rubber sealing ring.

8. The new energy vehicle motor housing assembly according to claim 1, characterized in that: The ends of the inner sealing bag and the outer sealing bag are communicated with the corresponding cylinder bodies.

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