Integrated liquid cooling motor connecting structure and electric two-wheeled vehicle

Abstract

The invention belongs to the technical field of electric two-wheeled vehicles, and discloses an integrated liquid-cooled motor connecting structure and an electric two-wheeled vehicle, the integrated liquid-cooled motor connecting structure comprises a connecting cylinder, two conductive columns, a signal connecting piece and an air pipe connecting piece, the connecting cylinder is installed on a stator shaft of an integrated liquid-cooled motor, the two conductive columns penetrate through the connecting cylinder, and the signal connecting piece is connected with the air pipe connecting piece. One end of each conductive column is used for being connected with a motor terminal, the other end of each conductive column is connected with a power supply terminal, the signal connecting piece penetrates through the connecting cylinder, one end of the signal connecting piece is connected with a control panel of the integrated liquid cooling motor, and the air pipe connecting piece penetrates through the connecting cylinder. The connecting structure of the integrated liquid-cooled motor facilitates wire outgoing of the integrated liquid-cooled motor, is simple and convenient to maintain and operate, does not need to form a wire outgoing hole in the motor shaft, and is beneficial to ensuring the strength of the motor shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of electric two-wheel vehicles, and in particular to an integrated liquid-cooled motor connection structure and an electric two-wheel vehicle. Background Art

[0002] Compared with traditional electric two-wheeled vehicle motors, liquid-cooled motors have excellent heat dissipation and rust prevention capabilities, which can greatly increase the service life of the motor. The integrated liquid-cooled motor with the controller installed inside the motor saves space and reduces external equipment and wiring. At present, the output method of the integrated liquid-cooled motor is to run the wires from the shaft, which has the following disadvantages:

[0003] First, the motor wires are difficult to repair and replace. The integrated liquid-cooled motors used in electric two-wheelers use a method of punching holes in the center of the shaft to pass the wires. After passing through the shaft, the motor wires are directly connected to the inside of the motor. If the motor wires are damaged, the motor needs to be removed to disconnect the internal circuits and air paths of the motor, and then the motor wires need to be pulled out for replacement, making the repair operation complicated.

[0004] Second: Drilling holes inside the shaft reduces the strength of the shaft. The holes drilled inside the motor shaft of an electric two-wheeler are a form of subtractive manufacturing, which reduces the strength of the motor shaft. Summary of the invention

[0005] The first object of the present invention is to provide an integrated liquid-cooled motor connection structure, which facilitates the integrated liquid-cooled motor to output wires, is simple to maintain, is easy to operate, and does not require a wire output hole to be opened on the motor shaft, which is beneficial to ensuring the strength of the motor shaft.

[0006] A second object of the present invention is to provide an electric two-wheeled vehicle, which has simple and convenient maintenance operations, and has a motor shaft with greater strength and higher reliability.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The present invention discloses an integrated liquid-cooled motor connection structure, comprising: a connection tube, which is installed on the stator shaft of the integrated liquid-cooled motor; two conductive columns, which are both passed through the connection tube and insulated from the connection tube, one end of each of the conductive columns is used to be connected to a motor terminal, and the other end is connected to a power terminal; a signal connector, which is passed through the connection tube, and one end of the signal connector is connected to a control panel of the integrated liquid-cooled motor; and an air pipe connector, which is passed through the connection tube.

[0009] In some embodiments, the connecting tube has a first through-hole for the conductive column to pass through; the integrated liquid-cooled motor connection structure also includes: an inner insulating member, which is plugged into one end of the first through-hole and sleeved on the conductive column; an outer insulating member, which is plugged into the other end of the first through-hole and sleeved on the conductive column.

[0010] In some embodiments, a threaded section is provided at one end of the conductive column, the threaded section cooperates with the motor terminal, and the motor terminal is locked to the threaded section by a locking nut; a first gasket is also provided between the locking nut and the motor terminal.

[0011] In some embodiments, a threaded hole is provided at the other end of the conductive column, the end face of the threaded hole stops at the power terminal, and the power terminal is locked by a locking bolt that fits into the threaded hole; a second gasket is provided between the head of the locking bolt and the power terminal.

[0012] In some embodiments, the connecting tube is provided with a second through-hole for the signal connector to pass through; the signal connector includes: an internal signal wiring, the internal signal wiring is passed through the second through-hole, and one end of the internal signal wiring is used to be connected to the control board; and an external signal connector, the external signal connector is connected to the other end of the internal signal wiring and is used to be connected to a power supply.

[0013] In some embodiments, the connecting tube is provided with a third through-hole for the air pipe connector to pass through, and the air pipe connector includes: an inner air pipe joint, which is installed in the third through-hole and is used to communicate with the internal space of the integrated liquid-cooled motor; and an outer air pipe joint, which is installed in the third through-hole and is used to connect to an external exhaust pipe.

[0014] In some specific embodiments, the third through hole includes a first hole, a second hole and a third hole, and the diameter of the second hole is smaller than the diameters of the first hole and the third hole; the trachea connector also includes: an inner pipe joint seat, the inner pipe joint seat is installed on the first hole, and the inner trachea joint is plugged into the inner pipe joint seat; an outer pipe joint seat, the outer pipe joint seat is installed on the third hole, and the outer trachea joint is plugged into the outer pipe joint seat.

[0015] In some embodiments, a side of the connecting tube facing the interior of the integrated liquid-cooled motor has a glue potting groove, and the glue potting groove is filled with a glue potting piece.

[0016] In some embodiments, the connecting tube and the stator shaft are an integrally formed part; or, the connecting tube and the stator shaft are connected by interference fit; or, the connecting tube and the stator shaft are connected by a connecting key.

[0017] The present invention also discloses an electric two-wheeled vehicle, comprising a vehicle body, an integrated liquid-cooled motor and the integrated liquid-cooled motor connection structure described above, wherein the vehicle body has wheels, the integrated liquid-cooled motor connection structure is sleeved on the stator shaft of the integrated liquid-cooled motor and installed in the mounting hole of the wheel, and a bearing is installed in the mounting hole.

[0018] The beneficial effects of the integrated liquid-cooled motor connection structure of the present invention are as follows: in the actual assembly process, the two conductive posts, the signal connector and the air pipe connector are all installed on the connecting tube. When assembling the integrated liquid-cooled motor, one end of the two conductive posts can be directly connected to the positive terminal and the negative terminal of the motor, one end of the signal connector is connected to the control board of the integrated liquid-cooled motor, and one end of the air pipe connector is connected to the internal air path pipeline of the integrated liquid-cooled motor. The connection of the internal and external circuits and the air path of the integrated liquid-cooled motor is achieved by the conductive posts, signal connectors and air pipe connectors arranged on the connecting tube. When maintenance is required, there is no need to dismantle the motor to disconnect the internal circuit and air path of the motor. The conductive posts, signal connectors and air pipe connectors can be directly disconnected from the external structure, which is very convenient to operate. Since the connecting tube is used as the outlet support structure, there is no need to drill holes on the stator shaft as in the prior art, which is conducive to ensuring the strength of the stator shaft of the integrated liquid-cooled motor.

[0019] Beneficial effects of the electric two-wheeled vehicle of the present invention: The integrated liquid-cooled motor in the electric two-wheeled vehicle of the present invention realizes the connection of the internal and external circuits and the gas path of the integrated liquid-cooled motor through the integrated liquid-cooled motor connection structure described above. When maintenance is required, there is no need to remove the motor to disconnect the internal circuit and gas path of the motor, and the operation is very convenient. Since the integrated liquid-cooled motor connection structure is used as the outlet support structure, there is no need to drill holes on the stator shaft as in the prior art, which is conducive to ensuring the strength of the stator shaft of the integrated liquid-cooled motor.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of an integrated liquid-cooled motor connection structure according to an embodiment of the present invention;

[0022] Figure 2 is a structural schematic diagram of the integrated liquid-cooled motor connection structure in another direction of an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of the exploded structure of the integrated liquid-cooled motor connection structure of an embodiment of the present invention;

[0024] Figure 4 is a cross-sectional view of an integrated liquid-cooled motor connection structure according to an embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the partial structure of an electric two-wheeled vehicle according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100, integrated liquid-cooled motor connection structure; 110, connecting tube; 111, first perforation; 112, second perforation; 113, third perforation; 114, glue potting groove; 120, conductive column; 121, threaded section; 122, threaded hole; 130, signal connector; 131, signal internal wiring; 132, signal external connector; 140, air pipe connector; 141, internal air pipe connector; 142, external air pipe connector; 143, internal pipe connector seat; 144, external pipe connector seat; 150, internal insulator; 151, first plug-in part; 160, external insulator; 161, second plug-in part; 170, locking nut; 180, first gasket; 190, locking screw; 1100, second gasket; 1200, glue potting part; 200, stator shaft; 300, bearing; 400, wheel. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right", "front", "rear" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] Reference below Figure 1-Figure 4 The specific structure of the integrated liquid-cooled motor connection structure 100 according to a specific embodiment of the present invention is described.

[0032] The present invention discloses an integrated liquid-cooled motor connection structure 100, referring to Figure 1-Figure 3 As shown, the integrated liquid-cooled motor connection structure 100 includes a connecting tube 110, a conductive column 120, a signal connector 130 and an air pipe connector 140. The connecting tube 110 is installed on the stator shaft 200 of the integrated liquid-cooled motor. There are two conductive columns 120. Both conductive columns 120 are passed through the connecting tube 110 and are insulated from the connecting tube 110. One end of each conductive column 120 is used to be connected to the motor terminal, and the other end is connected to the power terminal. The signal connector 130 is passed through the connecting tube 110, and one end of the signal connector 130 is connected to the control board of the integrated liquid-cooled motor. The air pipe connector 140 is passed through the connecting tube 110. It is understandable that in the actual assembly process, the two conductive posts 120, the signal connector 130 and the air pipe connector 140 are all installed on the connecting tube 110. When assembling the integrated liquid-cooled motor, one end of the two conductive posts 120 can be directly connected to the positive terminal and the negative terminal of the motor, one end of the signal connector 130 is connected to the control board of the integrated liquid-cooled motor, and one end of the air pipe connector 140 is connected to the internal air path pipeline of the integrated liquid-cooled motor. The conductive posts 120, the signal connector 130 and the air pipe connector 140 arranged on the connecting tube 110 realize the connection of the internal and external circuits and the air path of the integrated liquid-cooled motor. When maintenance is required, there is no need to dismantle the motor to disconnect the internal circuit and air path of the motor. The conductive posts 120, the signal connector 130 and the air pipe connector 140 can be directly disconnected from the external structure, which is very convenient to operate. Since the connecting tube 110 is used as the outlet support structure, there is no need to punch holes on the stator shaft 200 as in the prior art, which is conducive to ensuring the strength of the stator shaft 200 of the integrated liquid-cooled motor.

[0033] Optionally, the connecting tube 110 is a steel cylindrical member, which is responsible for connecting the motor circuit and the gas path and also plays a certain role in bearing the stator shaft 200. Of course, the material of the connecting tube 110 can also be selected according to actual needs.

[0034] Optionally, the conductive column 120 is a copper column. This ensures that the external power supply is stably connected to the positive and negative terminals of the integrated liquid-cooled motor. Of course, the material of the conductive column 120 can also be selected from other conductive materials according to actual needs, and is not limited to metal copper.

[0035] refer to Figure 3 and Figure 4As shown, the connecting cylinder 110 has a first through hole 111 for the conductive column 120 to pass through, and the integrated liquid-cooled motor connection structure 100 also includes an inner insulator 150 and an outer insulator 160. The inner insulator 150 is plugged into one end of the first through hole 111 and sleeved on the conductive column 120, and the outer insulator 160 is plugged into the other end of the first through hole 111 and sleeved on the conductive column 120. It can be understood that since the connecting cylinder 110 is to carry the stator shaft 200, a metal material is used. In order to ensure the insulation characteristics between the conductive column 120 and the connecting cylinder 110, the possibility of conduction between the conductive column 120 and the connecting cylinder 110 is eliminated by plugging the inner insulator 150 and the outer insulator 160 at both ends of the connecting cylinder 110, thereby improving safety. Optionally, the inner insulating member 150 is provided with a first plug-in portion 151, and the outer insulating member 160 is provided with a second plug-in portion 161, and the first plug-in portion 151 and the second plug-in portion 161 are respectively plugged into the two ends of the first through hole 111. Thus, on the one hand, the connection stability of the inner insulating member 150 and the outer insulating member 160 relative to the connecting tube 110 can be ensured, and on the other hand, the insulation between the connecting tube 110 and the conductive column 120 can be ensured.

[0036] Of course, in other embodiments of the present invention, insulating paint may be applied to positions where the conductive column 120 and the connecting tube 110 may contact each other, or an insulating sleeve may be provided on the outside of the conductive column 120 to ensure the insulation properties between the conductive column 120 and the connecting tube 110 .

[0037] refer to Figure 4 As shown, a threaded section 121 is provided at one end of the conductive column 120, the threaded section 121 cooperates with the motor terminal, and the motor terminal is locked to the threaded section 121 by a locking nut 170. It can be understood that in the actual connection process, it is only necessary to sleeve the motor terminal on the threaded section 121 and then lock it by the locking nut 170. This connection method has good reliability and can ensure stable conduction between the conductive column 120 and the motor terminal.

[0038] Optionally, a first gasket 180 is further provided between the locking nut 170 and the motor terminal. The additional first gasket 180 can prevent the locking nut 170 from directly rubbing the motor terminal when tightening the locking nut 170, which is beneficial to ensure the integrity of the motor terminal, thereby extending its service life.

[0039] It should be added here that in other embodiments of the present invention, connection can also be achieved through other connection methods, such as welding, screw fixing, etc., and is not limited to the above limitations.

[0040] refer to Figure 4As shown, the other end of the conductive column 120 is provided with a threaded hole 122, the end surface of the threaded hole 122 abuts against the power terminal, and the power terminal is locked by a locking bolt fitted in the threaded hole 122. It can be understood that in the actual connection process, it is only necessary to abut the power terminal against the end surface of the conductive column 120 and then lock it with the locking bolt. This connection method has good reliability and can ensure stable conduction between the conductive column 120 and the power terminal.

[0041] Optionally, a second gasket 1100 is provided between the head of the locking bolt and the power terminal. The additional second gasket 1100 can prevent the head of the locking screw 190 from directly rubbing the power terminal when tightening the locking screw 190, which is beneficial to ensure the integrity of the power terminal and thus prolong its service life.

[0042] refer to Figure 3 As shown, the connection tube 110 is provided with a second through hole 112 for the signal connector 130 to pass through; the signal connector 130 includes a signal internal wiring 131 and a signal external connector 132, the signal internal wiring 131 is passed through the second through hole 112, and one end of the signal internal wiring 131 is used to connect to the control board, and the signal external connector 132 is connected to the other end of the signal internal wiring 131 and is used to connect to the power supply. It can be understood that in the actual assembly process, one end of the signal connection line is connected to the control board (the connection method can be welding, bonding, or other connection methods) and then the signal internal wiring 131 is passed through the second through hole 112 and connected to the signal external connector 132. The operation is very convenient. During the maintenance process, it is only necessary to pull out the signal external connector 132 to disconnect it from the signal internal wiring 131, so as to disconnect the control board from the power supply. The detachable method of the signal internal wiring 131 and the signal external connector 132 can be selected according to actual needs, and the connection method of the signal internal wiring 131 and the signal external connector 132 is not limited here.

[0043] refer to Figure 3 As shown, the connecting tube 110 is provided with a third through hole 113 through which the air pipe connector 140 passes. The air pipe connector 140 includes an inner air pipe joint 141 and an outer air pipe joint 142. The inner air pipe joint 141 is installed in the third through hole 113 and is used to communicate with the internal space of the integrated liquid-cooled motor. The outer air pipe joint 142 is installed in the third through hole 113 and is used to connect with the external exhaust pipe. It can be understood that in the actual assembly process, the inner air pipe joint 141 can be connected to the internal air pipe of the integrated liquid-cooled motor and then inserted into one end of the third through hole 113. Then, the external exhaust pipe can be connected to the external air pipe joint 142 and then inserted into the other end of the third through hole 113. In this way, the connection between the internal air pipe and the external exhaust pipe of the integrated liquid-cooled motor is realized. When maintenance is required, the external exhaust pipe can be directly pulled out, which is very convenient to operate.

[0044] In some specific embodiments, the third through hole 113 includes a first hole, a second hole and a third hole, and the diameter of the second hole is smaller than the diameters of the first hole and the third hole; the air pipe connector 140 also includes an inner pipe joint seat 143 and an outer pipe joint seat 144, the inner pipe joint seat 143 is installed in the first hole, the inner air pipe connector 141 is plugged into the inner pipe joint seat 143, the outer pipe joint seat 144 is installed in the third hole, and the outer air pipe connector 142 is plugged into the outer pipe joint seat 144. It can be understood that in the actual installation process, the inner pipe joint seat 143 is installed in the first hole, and the outer pipe joint seat 144 is installed in the third hole. By providing the inner pipe joint seat 143 and the outer pipe joint seat 144, the connection sealing performance between the inner air pipe connector 141 and the outer air pipe connector 142 and the third through hole 113 can be improved, thereby ensuring that the gas generated inside the integrated liquid-cooled motor can be stably discharged from the external exhaust pipe, and will not be discharged from the connection gap between the air pipe connector 140 and the third through hole 113.

[0045] Optionally, the inner tube joint seat 143 and the outer tube joint seat 144 are both made of plastic and are connected to the first hole and the third hole by bonding. Thus, the connection stability between the inner tube joint seat 143 and the outer tube joint seat 144 and the first hole and the third hole is ensured, and when the inner air pipe joint 141 and the outer air pipe joint 142 are respectively inserted into the inner tube joint seat 143 and the outer tube joint seat 144, they can be deformed to ensure the connection stability between the inner air pipe joint 141 and the inner tube joint seat 143 and between the outer air pipe joint 142 and the outer tube joint seat 144.

[0046] Optional, reference Figure 2 As shown, the side of the connecting tube 110 facing the inside of the integrated liquid-cooled motor has a glue pouring groove 114, and the glue pouring groove 114 is filled with a glue pouring piece 1200. It can be understood that by providing the glue pouring piece 1200, the sealing performance of the integrated liquid-cooled motor can be ensured, and the phenomenon of reduced sealing performance of the integrated liquid-cooled motor after the connecting tube 110 is installed can be avoided.

[0047] In some embodiments, the connecting tube 110 and the stator shaft 200 are integrally formed. It is understandable that this can reduce the number of parts and facilitate assembly. In an alternative embodiment, the connecting tube 110 is connected to the stator shaft 200 by interference fit, which simplifies the structure of the stator shaft 200, reduces the manufacturing difficulty of the stator shaft 200, and is conducive to reducing manufacturing costs. In another embodiment, the connecting tube 110 is connected to the stator shaft 200 by a connecting key. Compared with the interference fit key connection method, it is more convenient to install and easy to assemble.

[0048] The present invention also discloses an electric two-wheeled vehicle, referring to Figure 5As shown, the electric two-wheeled vehicle includes a vehicle body (not shown), an integrated liquid-cooled motor and the integrated liquid-cooled motor connection structure 100 mentioned above, the vehicle body has a wheel 400, the integrated liquid-cooled motor connection structure 100 is sleeved on the stator shaft 200 of the integrated liquid-cooled motor, and is installed in the mounting hole of the wheel 400, and a bearing 300 is installed in the mounting hole. It can be understood that the integrated liquid-cooled motor in the electric two-wheeled vehicle of this embodiment realizes the connection of the internal and external circuits and the gas path of the integrated liquid-cooled motor through the integrated liquid-cooled motor connection structure 100 mentioned above. When maintenance is required, there is no need to remove the motor to disconnect the internal circuit and gas path of the motor, and the operation is very convenient. Since the integrated liquid-cooled motor connection structure 100 is used as the outlet support structure, there is no need to drill holes on the stator shaft 200 as in the prior art, which is conducive to ensuring the strength of the stator shaft 200 of the integrated liquid-cooled motor.

[0049] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An integrated liquid-cooled motor connection structure, characterized in that: include: A connecting cylinder (110), wherein the connecting cylinder (110) is mounted on a stator shaft (200) of an integrated liquid-cooled motor; Conductive posts (120), there are two conductive posts (120), both of the two conductive posts (120) are inserted through the connecting tube (110) and are insulated from the connecting tube (110), one end of each conductive post (120) is used to be connected to a motor terminal, and the other end is connected to a power supply terminal; A signal connector (130), wherein the signal connector (130) is inserted into the connecting tube (110), and one end of the signal connector (130) is connected to a control board of the integrated liquid-cooled motor; A trachea connecting piece (140), wherein the trachea connecting piece (140) is inserted into the connecting tube (110).

2. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: The connecting cylinder (110) has a first through hole (111) for the conductive column (120) to pass through; the integrated liquid-cooling motor connection structure also includes: An inner insulating member (150), the inner insulating member (150) being inserted into one end of the first through hole (111) and sleeved on the conductive column (120); An external insulating member (160) is inserted into the other end of the first through hole (111) and sleeved on the conductive column (120).

3. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: A threaded section (121) is provided at one end of the conductive column (120), the threaded section (121) cooperates with the motor terminal, and the motor terminal is locked to the threaded section (121) via a locking nut (170); a first gasket (180) is also provided between the locking nut (170) and the motor terminal.

4. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: The other end of the conductive column (120) is provided with a threaded hole (122), the end face of the threaded hole (122) abuts against the power terminal, and the power terminal is locked by a locking bolt that fits into the threaded hole (122); a second gasket (1100) is provided between the head of the locking bolt and the power terminal.

5. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: The connecting tube (110) is provided with a second through hole (112) for the signal connecting member (130) to pass through; the signal connecting member (130) comprises: A signal internal wiring (131), wherein the signal internal wiring (131) is passed through the second through hole (112), and one end of the signal internal wiring (131) is used to be connected to the control board; A signal external connector (132), the signal external connector (132) is connected to the other end of the signal internal connector (131) and is used to be connected to a power source.

6. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: The connecting tube (110) is provided with a third through hole (113) for the trachea connecting piece (140) to pass through, and the trachea connecting piece (140) comprises: An inner air pipe joint (141), the inner air pipe joint (141) being installed on the third through hole (113) and being used for communicating with the inner space of the integrated liquid-cooled motor; An external air pipe joint (142), the external air pipe joint (142) is installed on the third through hole (113) and is used to be connected to an external exhaust pipe.

7. The integrated liquid-cooled motor connection structure according to claim 6, characterized in that: The third through hole (113) includes a first hole, a second hole and a third hole, and the diameter of the second hole is smaller than the diameters of the first hole and the third hole; the trachea connecting piece (140) also includes; An inner tube joint seat (143), the inner tube joint seat (143) being installed in the first hole, and the inner air pipe joint (141) being plugged into the inner tube joint seat (143); An external pipe joint seat (144), the external pipe joint seat (144) is installed in the third hole, and the external air pipe joint (142) is plugged into the external pipe joint seat (144).

8. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: The connecting tube (110) has a glue potting groove (114) on one side facing the interior of the integrated liquid-cooled motor, and the glue potting groove (114) is filled with a glue potting piece (1200).

9. The integrated liquid-cooled motor connection structure according to claim 1, characterized in that: The connecting cylinder (110) and the stator shaft (200) are integrally formed; or, The connecting tube (110) is connected to the stator shaft (200) by interference fit; or, The connecting cylinder (110) is connected to the stator shaft (200) via a connecting key.

10. An electric two-wheeled vehicle, characterized in that: It comprises a vehicle body, an integrated liquid-cooled motor and an integrated liquid-cooled motor connection structure as described in any one of claims 1 to 9, wherein the vehicle body has a wheel (400), the integrated liquid-cooled motor connection structure is sleeved on the stator shaft (200) of the integrated liquid-cooled motor and installed in the mounting hole of the wheel (400), and a bearing (300) is installed in the mounting hole.

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