Sealed hub motor lead-out wire, hub motor and new energy vehicle

Abstract

The present invention provides a sealed hub motor lead-out wire, a hub motor and a new energy vehicle. The sealed hub motor lead-out wire comprises a cable, and a motor end connection sealing assembly and a controller end sealing assembly which are respectively arranged at two ends of the cable; a waterproof isolation layer is further provided in a sheath of the cable; thus, one end of the cable can be sealingly connected to a motor shaft by means of the motor end connection sealing assembly, so as to prevent external dust, water drops and the like from entering a hub motor body through the gap between the end of the cable and the motor shaft, and the other end of the cable can achieve waterproof sealing by means of the controller end sealing assembly, so as to prevent external dust, water drops and the like from entering through gaps between core wires at this end of the cable; in addition, the cable is provided with the waterproof isolation layer, such that the cable itself has a better waterproof effect; therefore, the sealed hub motor lead-out wire can achieve an all-around and higher-level waterproof effect.

Description

Closed hub motor lead-out wire, hub motor and new energy vehicle TECHNICAL FIELD

[0001] The present application belongs to the technical field of hub motor accessories, and particularly relates to a closed hub motor lead-out wire, a hub motor and a new energy vehicle. BACKGROUND

[0002] With the development of related technologies, not only electric bicycles but also new energy vehicle manufacturers have begun to use or consider using hub motors in new energy vehicles. The hub motor integrates the driving device, transmission device and braking device into the hub, eliminating the clutch, differential, transfer and other transmission components, greatly simplifying the mechanical part of the electric vehicle, which is conducive to reducing the production cost, maintenance difficulty and operating energy consumption of the electric vehicle. For new energy vehicles, the use of hub motors can solve the key problem of endurance.

[0003] The hub motor generally includes a closed hub motor body and a lead-out wire. The hub motor body contains a motor shaft, and the lead-out wire passes through a wire passing hole on the motor shaft. One end of the lead-out wire inside the hub motor body is connected to the motor winding inside the hub motor body, and the other end of the lead-out wire outside the hub motor body is connected to the external power supply and / or controller. The existing hub motor structure is difficult to meet the waterproof standard of new energy vehicles, mainly having the following two problems. On the one hand, the lead-out wire is usually fixed in the wire passing hole of the motor shaft by glue injection, that is, the motor shaft has a glue injection hole communicating with the wire passing hole. After the lead-out wire passes through the wire passing hole, waterproof glue is injected into the wire passing hole through the glue injection hole, thereby sealing between the lead-out wire and the wire passing hole. However, the lead-out wire is significantly heated due to large instantaneous current during use, with a maximum temperature of 180-200 DEG C. At high temperatures, the adhesive points of the waterproof glue will crack, affecting the waterproof sealing effect. On the other hand, the lead-out wire usually contains a plurality of core wires such as phase wires and signal wires. The use of multiple core wires is conducive to improving the toughness of the lead-out wire, so that it is not easy to break. However, gaps exist between the multiple core wires. At the end of the lead-out wire connected to the external power supply and / or controller, the multiple core wires are branched and connected, which makes the gap more likely to be exposed. During use, when water droplets splash on the core wires, the water droplets are likely to slide along the core wires, enter the hub motor body through the gap, and cause the hub motor to be flooded. SUMMARY

[0004] The application is carried out to solve the above problems, and aims to provide a wheel hub motor lead-out wire and a wheel hub motor with higher level waterproof sealing effect, which can be better applied to new energy vehicles, and adopts the following technical scheme: The application provides a closed wheel hub motor lead-out wire, which has the following technical features: the closed wheel hub motor lead-out wire comprises: a cable having a plurality of core wires, a waterproof isolation layer wrapped outside the plurality of core wires, and a sheath wrapped outside the waterproof isolation layer; a motor end connection sealing assembly arranged at one end of the cable and used for sealingly connecting the one end and the motor shaft; and a controller end sealing assembly arranged at the other end of the cable and used for sealing the other end, wherein the controller end sealing assembly comprises: a core wire branch fixing member arranged on the plurality of core wires and having a plurality of core wire fixing holes for beam splitting and waterproof sealing of the plurality of core wires; and a waterproof sealing sleeve wrapped outside the core wire branch fixing member and one end of the sheath and used for waterproof sealing of the other end of the cable.

[0005] The closed wheel hub motor lead-out wire provided by the application can also have the following technical features: the core wire branch fixing member and the one end of the sheath have a predetermined spacing, a branch inclined portion is formed in the part of the core wire between the core wire branch fixing member and the one end of the sheath, the controller end sealing assembly further comprises: a glued fixing part arranged on the branch inclined portion of the plurality of core wires and used for gluing and fixing the branch inclined portion; and a fixing sleeve wrapped on the core wire branch fixing member, the glued fixing part and the one end of the sheath and used for fixing the relative positions thereof, and the waterproof sealing sleeve is wrapped outside the fixing sleeve and the one end of the sheath.

[0006] The closed wheel hub motor lead-out wire provided by the application can also have the following technical features: the controller end sealing assembly further comprises: a fastening ring sleeved and pressed on the core wire branch fixing member, and the fixing sleeve is wrapped on the fastening ring, the glued fixing part and the one end of the sheath.

[0007] The closed wheel hub motor lead-out wire provided by the application can also have the following technical features: the plurality of core wires comprise a plurality of phase wires and a plurality of signal wires, the plurality of core wire fixing holes comprise a plurality of phase wire fixing holes and a plurality of signal wire fixing holes, and the plurality of signal wire fixing holes are distributed on the edge part of one side of the axial section of the core wire branch fixing member.

[0008] The closed hub motor lead-out wire provided by the application can further have the following technical features: the core wire fixing hole of the core wire branch fixing member is in interference fit with the corresponding core wire, the waterproof sealing sleeve is in interference fit with one end of the cable, the core wire branch fixing member is a nitrile rubber member, and the waterproof sealing sleeve is a nitrile rubber sleeve. The closed hub motor lead-out wire provided by the application can further have the following technical features: the motor end connection sealing assembly comprises a sealing sleeve arranged on one end of the cable and arranged in the wire passing hole of the motor shaft, used for performing primary waterproof sealing between the cable and the wire passing hole, and a first glue fixing part arranged between at least one of the sealing sleeve and the cable and the wire passing hole, used for performing secondary waterproof sealing between the cable and the wire passing hole, and the sealing sleeve has a sleeve fixing part in interference fit with the cable and formed on the outer periphery of the sleeve fixing part, used for abutting against the inner wall of the wire passing hole.

[0009] The closed hub motor lead-out wire provided by the application can further have the following technical features: the motor end connection sealing assembly further comprises a protective sleeve made of wear-resistant material, sleeved on the cable and close to the sealing sleeve, and in interference fit with the cable, used for preventing the cable from contacting the hole end edge of the wire passing hole.

[0010] The closed hub motor lead-out wire provided by the application can further have the following technical features: the sealing sleeve is a nitrile rubber sleeve, and the first glue fixing part is composed of silica gel.

[0011] The application provides a hub motor, which has the following technical features: the hub motor comprises a hub motor body having a motor shaft with a wire passing hole, and the closed hub motor lead-out wire described above is arranged in the wire passing hole. The application provides a new energy vehicle, which has the following technical features: the new energy vehicle comprises the hub motor described above.

[0012] Inventive action and effect

[0013] According to the closed hub motor lead-out wire, the hub motor and the new energy vehicle, the lead-out wire comprises a cable, a motor end connecting sealing assembly and a controller end sealing assembly which are respectively arranged at two ends of the cable, and a waterproof isolation layer is further arranged in the sheath of the cable, so that one end of the cable can be sealingly connected with a motor shaft through the motor end connecting sealing assembly, and external dust or water drops and the like are prevented from entering the inside of the hub motor body from the one end of the cable and the motor shaft; the other end of the cable can be waterproofly sealed through the controller end sealing assembly, and external dust or water drops and the like are prevented from entering from the gap between the core wires of the one end of the cable; in addition, the cable has the waterproof isolation layer, so that the cable itself has better waterproof effect, and therefore the lead-out wire can realize all-around and higher-level waterproof effect.

[0014] Further, the controller end sealing assembly comprises a core wire branch fixing piece and a waterproof sealing sleeve, so that at the one end of the cable for connecting an external power supply and / or a controller, a plurality of core wires in the cable can be branched through a plurality of core wire fixing holes on the core wire branch fixing piece and be circumferentially sealed, and the core wire branch fixing piece and the one end of the sheath are tightly wrapped through the waterproof sealing sleeve, so as to completely shield the gap between the core wires, which is beneficial to subsequent wire arrangement and wiring and can prevent water drops splashed on the core wires from sliding down the core wires and entering the gap between the core wires, so as to practically realize waterproof sealing at the one end of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic view of the closed hub motor lead-out wire in the embodiment of the present application.

[0016] Fig. 2 is a sectional view of the cable in the embodiment of the present application.

[0017] Fig. 3 is a perspective view of the sealing sleeve in the embodiment of the present application.

[0018] Fig. 4 is a sectional view of the sealing sleeve in the embodiment of the present application.

[0019] Fig. 5 is a sectional view of the protective sleeve in the embodiment of the present application.

[0020] Fig. 6 is a sectional view of the motor connecting end in use in the embodiment of the present application.

[0021] Fig. 7 is an assembly flow chart of the motor connecting end in the embodiment of the present application.

[0022] Fig. 8 is a structural exploded view of the controller connecting end in the embodiment of the present application.

[0023] Fig. 9 is a perspective view of the core wire branch fixing piece in the embodiment of the present application.

[0024] Fig. 10 is an assembly flow chart of the controller connecting end in the embodiment of the present application.

[0025] Fig. 11 is a structural diagram of the controller connection end during the assembly process in an embodiment of the application.

[0026] Fig. 12 is a structural diagram of the controller connection end during the assembly process in an embodiment of the application.

[0027] Fig. 13 is a structural diagram of the controller connection end during the assembly process in an embodiment of the application.

[0028] Fig. 14 is a structural diagram of the controller connection end during the assembly process in an embodiment of the application.

[0029] Fig. 15 is an assembly flowchart of the controller connection end in an embodiment of the application.

[0030] Reference signs: hub motor 100; enclosed hub motor lead-out wire 10; motor connection end 10a; controller connection end 10b; cable 11; sheath 111; phase line 112; first phase line 112a; second phase line 112b; third phase line 112c; signal line 113; first signal line 113a; second signal line 113b; third signal line 113c; fourth signal line 113d; fifth signal line 113e; sixth signal line 113f; gap 114; sealing sleeve 12; sleeve joint fixing part 121; through hole 121a; guide end part 122; first guide end face 1221; elastic sealing part 123; second guide end face 1231; outer edge 1232; outer peripheral face 1232a; annular groove 1233; protective sleeve 13; through hole 13a; enclosed cable connection assembly 16; core line branch fixing part 161; first phase line fixing hole 1611a; second phase line fixing hole 1611b; third phase line fixing hole 1611c; first signal line fixing hole 1612a; second signal line fixing hole 1612b; third signal line fixing hole 1612c; fourth signal line fixing hole 1612d; fifth signal line fixing hole 1612e; sixth signal line fixing hole 1612f; glue fixing part 162; fastening ring 163; fixed sleeve 164; waterproof sealing sleeve 165; sheath covering part 1651; sleeve covering part 1652; hub motor body 20; motor housing 21; motor shaft 22; wire passing hole 221; first hole section 2211; penetration opening 2211a; second hole section 2212; egress opening 2212a; glue injection hole 222; glue injection port 222a. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the enclosed hub motor lead-out wire, hub motor and new energy vehicle of the application are specifically described below in combination with embodiments and drawings.

[0032] EMBODIMENT

[0033] The embodiment provides a new energy vehicle, which adopts a wheel hub motor as a power device, and the structure of the wheel hub motor will be mainly described below, and other structures of the new energy vehicle can adopt corresponding structures in the prior art. The wheel hub motor comprises a wheel hub motor body and a lead-out wire, and the structure of the lead-out wire will be described first, and then the assembly structure of the wheel hub motor body and the lead-out wire will be described.

[0034] Fig. 1 is a perspective view of a structure schematic diagram of a closed wheel hub motor lead-out wire in the embodiment.

[0035] As shown in Fig. 1, the closed wheel hub motor lead-out wire 10 (hereinafter referred to as the lead-out wire 10) comprises a cable 11, a motor end connecting sealing assembly and a controller end connecting assembly respectively arranged at both ends of the cable 11, so that one end of the lead-out wire 10 is a motor connecting end 10a for connecting the wheel hub motor body, and the other end is a controller connecting end 10b for connecting an external power supply and / or a controller and the like.

[0036] Fig. 2 is a sectional view of a cable in the embodiment.

[0037] As shown in Fig. 2, the cable 11 comprises a sheath 111, an insulating layer, a water-blocking isolation layer (not shown in the figure) and a plurality of core wires. The plurality of core wires are arranged in close contact with each other, the water-blocking isolation layer is wrapped outside the plurality of core wires, the insulating layer is further wrapped outside the water-blocking isolation layer, the sheath 111 is further wrapped outside the insulating layer, and the sheath 111 has a certain thickness and elasticity. Each core wire comprises a plurality of conductor wires and an insulating layer wrapped outside the plurality of conductor wires, and the insulating layer has a certain thickness and elasticity.

[0038] In the embodiment, the outer diameter of the cable 11 is about 7 mm. The material of the sheath 111 is chlorinated polyethylene (CPE), and the water-blocking isolation layer is composed of water-blocking yarn.

[0039] In the embodiment, the plurality of core wires specifically comprise three phase wires for power supply and six signal wires for transmitting control signals, the outer diameters of the three phase wires are the same, and the outer diameters of the six signal wires are the same and obviously smaller than the outer diameter of the phase wire. For the convenience of description below, the three phase wires are respectively denoted as first to third phase wires 112a-112c, and the six signal wires are respectively denoted as first to sixth signal wires 113a-113f.

[0040] From the cross section of the cable 11 in the axial direction, the centers of the cross sections of the three phase lines are located at the three vertices of a triangle, in which the first phase line 112a is located in the middle, and the second phase line 112b and the third phase line 112c are located on both sides of the first phase line 112a and are in close contact with the first phase line 112a, and the second phase line 112b and the third phase line 112c are not in contact with each other. The six signal lines are arranged at one side of the inner diameter of the sheath 111, and the second signal line 113b, the third signal line 113c and the fifth signal line 113e are located at the three vertices of an equilateral triangle, and the three signal lines are in close contact with the second phase line 112b and the third phase line 112c. The other three signal lines are arranged in a circular arc shape on the outer periphery of the three signal lines arranged in a triangle, and are in close contact with the three signal lines arranged in a triangle. It can be seen that, by using such a core arrangement, there are gaps 114 of different sizes between the phase lines and the inner wall of the sheath 111, between the second and third phase lines and the third signal line 113c in the middle, between the plurality of signal lines, and between the signal lines arranged on the outer periphery and the sheath 111. The gap 24 extends along the extension direction of the cable 11 and penetrates through.

[0041] The structure of the motor end sealing assembly is based on the structure of the cable 11 and the motor shaft structure of the hub motor body, so the motor shaft structure will be described first.

[0042] FIG. 3 is a cross-sectional view of the motor connection end in use in the present embodiment.

[0043] As shown in FIG. 3, the hub motor body 20 includes a motor housing 21, a motor shaft 22 passing through the motor housing 21, and a motor winding and internal lead wire, etc. (not shown in the figure) arranged inside the motor housing 21.

[0044] One end of the motor shaft 22 extends to the outside of the motor housing 21, the motor connection end 10a of the lead wire 10 passes through the wire hole on the motor shaft 22 into the motor housing 21 and is electrically connected with the motor winding, and the controller connection end 10b is located outside the motor housing 21.

[0045] FIG. 4 is a cross-sectional view of the motor shaft in the present embodiment, and the motor housing structure and the motor shaft structure in FIGS. 3 and 4 are only exemplary simplified structures for ease of description.

[0046] As shown in FIG. 4, the motor shaft 22 is provided with a wire passing hole 221 for the lead-out wire 10 to pass through. The wire passing hole 221 includes a first hole section 2211 and a second hole section 2212, both of which have a circular axial cross section and substantially the same inner diameter. One end of the first hole section 2211 is located at one axial end of the motor shaft 22, i.e. outside the motor housing 21, and forms a penetrating opening 221a at one end of the motor shaft 22. The other end of the first hole section 2211 is located at the middle of the motor shaft 22 and communicates with one end of the second hole section 2212. The other end of the second hole section 2212 is located at the side surface of the motor shaft 22 and forms a lead-out opening 221b at the side surface. Moreover, the first hole section 2211 extends substantially in the axial direction of the motor shaft 22, and the second hole section 2212 extends obliquely relative to the first hole section 2211, and the included angle between the two is an obtuse angle, i.e. a bending portion is formed between the first hole section 2211 and the second hole section 2212.

[0047] In addition, the motor shaft 22 is provided with a glue injection hole 222, which extends substantially in the radial direction of the motor shaft 22. The inner diameter of the glue injection hole 222 is much smaller than that of the wire passing hole 221. One end of the glue injection hole 222 communicates with the first hole section 2211, and the other end of the glue injection hole 222 is located at the side surface of the motor shaft 22 and forms a glue injection opening 222a at the side surface. One glue injection hole 222 is shown in the figure, and more glue injection holes 222 can be provided according to actual needs, but the number of glue injection holes 222 should not be too large in consideration of the overall structural strength of the motor shaft 22.

[0048] As shown in FIG. 1, at the motor connecting end 10a, the motor end sealing assembly includes a sealing sleeve 12, a protective sleeve 13 and a first glue fixing portion (not shown in the figure).

[0049] FIG. 5 is a perspective view of the sealing sleeve in the embodiment, and FIG. 6 is a sectional view of the sealing sleeve in the embodiment.

[0050] As shown in FIGS. 5 and 6, the sealing sleeve 12 is used to realize the sealing between the cable 11 and the wire passing hole 221. The sealing sleeve 12 is made of rubber and vulcanized on the cable 11. The sealing sleeve 12 includes an integrated sleeve fixing portion 121, a guide end portion 122 and a plurality of elastic sealing portions 123.

[0051] The sleeve fixing portion 121 is used to be sleeved on the cable 11 and has a substantially cylindrical shape, i.e. the inside of the sealing sleeve 12 has a through hole 121a with a circular cross section for sleeving.

[0052] The guide end 122 is used to guide the cable 11 when it is inserted through the through hole 221, so that the cable 11 is more easily inserted. The guide end 122 is formed on the axial end of the sleeve fixing part 121, and the guide end 122 is annular, and the cross section of the guide end 122 in the circumferential direction is triangular, and the thickness of the guide end 122 gradually increases in the direction D1 in the drawing (i.e. in the axial direction of the sealing sleeve 12 from one end of the sealing sleeve 12 having the guide end 122 to the other end of the sealing sleeve 12).

[0053] The elastic sealing part 123 is used to achieve waterproof sealing between the cable 11 and the through hole 221 by elastic deformation. A plurality of elastic sealing parts 123 are formed on the outer circumferential surface of the sleeve fixing part 121, and the distance between the adjacent two elastic sealing parts 123 is a certain distance. Each elastic sealing part 123 is annular, and the cross section of the elastic sealing part 123 in the circumferential direction is a right-angled triangle with a round corner, so that the elastic sealing part 123 has a second guide end surface 1231 which is conical annular, and in an alternative embodiment, the cross section of the elastic sealing part 123 in the circumferential direction can also be an acute-angled triangle. In the direction D1 in the drawing, the thickness of the elastic sealing part 123 gradually increases, that is, in the position of the elastic sealing part 123, the outer diameter of the sealing sleeve 12 gradually increases in the direction D1, and the inclination direction of the second guide end surface 1231 is basically the same as the inclination direction of the first guide end surface 1221 of the guide end 122. In addition, the outer edge 1232 of the elastic sealing part 123 has a round corner, so that the outer edge 1232 is more easily formed into a smooth annular surface when subjected to radial pressure, and the stress on the annular surface can be transmitted to the sleeve fixing part 121 in the radial direction. The annular groove 1233 with a shallow depth is formed between the adjacent two elastic sealing parts 123, and the cross section of the annular groove 1233 in the circumferential direction is substantially trapezoidal, and the groove opening of the annular groove 1233 is the long side of the trapezoid.

[0054] In the embodiment, there are three elastic sealing parts 123 with the same size, and the distance d3 between the adjacent two elastic sealing parts 123 is basically the same. The axial length l1 of the sealing sleeve 12 is relatively small, and is about 1 / 4-1 / 3 of the extension length of the first hole section 2211.

[0055] In the state without external force (i.e. in the state without elastic expansion of the sealing sleeve 12), the outer diameter d2 of the elastic sealing part 123 on the sealing sleeve 12 is slightly larger than the inner diameter of the through hole 221.

[0056] Fig. 7 is a sectional view of the protective sleeve in the embodiment.

[0057] As shown in Fig. 7, the material of the protective sleeve 13 is rubber, and the protective sleeve 13 is vulcanized on the cable 11, close to the sealing sleeve 12 and farther away from the lead-in end 11a relative to the sealing sleeve 12. The protective sleeve 13 is cylindrical, that is, the inside of the protective sleeve 13 has a through hole 13a with a circular cross section.

[0058] In the state without external force, the outer diameter d5 of the protective sleeve 13 is slightly smaller than the inner diameter of the wire passing hole 221. The axial length l2 of the protective sleeve 13 is close to the extension length of the first hole section 2211. In addition, when being sleeved on the cable 11, the protective sleeve 13 is spaced apart from the sealing sleeve 12 by a predetermined distance, so that when the sealing sleeve 12 is located in the second hole section 2212, the penetrating opening 2211a is located at the protective sleeve 13, and when the position of the sealing sleeve 12 is adjusted within a certain range in the second hole section 2212, the penetrating opening 2211a is always located at the protective sleeve 13 without directly contacting the sheath 111 of the cable 11 before and after the protective sleeve 13.

[0059] As shown in FIG. 3, based on the above size characteristics of the sealing sleeve 12, after the lead-out wire 10 is penetrated into the wire passing hole 221, the sealing sleeve 12 is in interference fit with the cable 11 and the wire passing hole 221, the sealing sleeve 12 tightly wraps the cable 11, and one circle of the outer edge 1232 of the elastic sealing part 123 abuts against the wire passing hole 221, the outer edge 1232 is elastically deformed to form a substantially annular outer circumferential surface 1232a which abuts against the inner side of the wire passing hole 221, so that the sealing between the cable 11 and the wire passing hole 221 can be realized.

[0060] Based on the above size characteristics of the protective sleeve 13, after the lead-out wire 10 is penetrated into the wire passing hole 221, the penetrating opening 2211a is located at the protective sleeve 13, and due to the long axial length of the protective sleeve 13, when the position of the sealing sleeve 12 is adjusted within a small range in the first hole section 2211, the penetrating opening 2211a is always located at the protective sleeve 13, that is, the relatively sharp penetrating opening 2211a (i.e. one end edge of the first hole section 2211) does not directly contact the sheath 111 of the cable 11, so that damage to the sheath 111 of the cable 11 during penetration of the lead-out wire 10 or adjustment of the installation position can be avoided.

[0061] In the embodiment, the material of the sealing sleeve 12 is nitrile rubber (NBR). The material has a wider use temperature range, the long-term use temperature is 120℃, and has good low-temperature resistance, the minimum glass transition temperature can reach -55℃, the material also has good water resistance, air tightness, oil resistance and wear resistance. In the above state without external force, the outer diameter d2 of the elastic sealing part 123 on the sealing sleeve 12 is about 0.7mm-1mm larger than the inner diameter of the wire passing hole 221, the spacing d3 of the elastic sealing part 123 is about 3mm, and the axial length l1 of the sealing sleeve 12 is 12mm-16mm. After assembly is completed, the outer diameter of the elastic sealing part 123 is the inner diameter of the wire passing hole 221.

[0062] The material of the protective sleeve 13 is also nitrile rubber, with a Shore hardness of 60A, and has the characteristics of high temperature resistance and wear resistance. The outer diameter d5 of the protective sleeve 13 is about 0.5 mm smaller than the inner diameter of the wire hole 221, and the axial length l2 of the protective sleeve 13 is 30 mm to 50 mm. The first adhesive fixing part is formed by an adhesive, and is used to realize the secondary waterproof sealing between the cable 11 and the wire hole 221. After the motor connection end 10a of the cable 11 passes through the wire hole 221, the adhesive is injected into the wire hole 221 through the glue injection port 222a on the motor shaft 22, and after the adhesive is fixed and formed, the first adhesive fixing part is formed.

[0063] According to the position of the glue injection hole 222 and the installation position of the sealing sleeve 12 in the wire hole 221, the adhesive can be injected into one of the annular grooves 1233 of the sealing sleeve 12, in which case a small amount of adhesive can be used to achieve effective secondary waterproof sealing; or the adhesive can be injected between the cable 11 segment in front of the sealing sleeve 12 and the wire hole 221, in which case the adhesive can be provided in the first hole segment 2211 in front of the sealing sleeve 12 to achieve better fixing. In addition, when there are multiple glue injection holes 222, the adhesive can also be provided in multiple annular grooves 1233 at the same time, or in one annular groove 1233 and in the first hole segment 2211 in front of the sealing sleeve 12.

[0064] In this embodiment, the first adhesive fixing part is formed by silicone.

[0065] FIG. 8 is an assembly flowchart of the motor connection end in this embodiment.

[0066] As shown in FIG. 8, the motor connection end 10a of the lead-out wire 10 can be assembled onto the motor shaft 22 according to the following steps:

[0067] Step S1-1, the motor connection end 10a is inserted into the wire hole 221 from the insertion opening 2211a on the motor shaft 22.

[0068] Step S1-2, the lead-out wire 10 is continuously inserted into the wire hole 221 until the insertion opening 2211a is located at about the middle of the protective sleeve 13, at which time the sealing sleeve 12 is located in the first hole segment 2211 and close to the second hole segment 2212, and the sealing sleeve 12 is in interference fit with the first hole segment 2211 to achieve waterproof sealing.

[0069] Among them, when the lead-out wire 10 is inserted, the first guide end face 1221 and the second guide end face 1231 on the sealing sleeve 12 guide the entry of the sealing sleeve 12, making it easier to assemble.

[0070] Step S1-3, the installation position of the sealing sleeve 12 in the first hole segment 2211 is adjusted in a small range according to the need for glue injection.

[0071] That is, the position of the sealing sleeve 12 is adjusted in a small range so that the glue injection hole 22 is substantially aligned with one of the annular grooves 1233 on the sealing sleeve 12 or substantially aligned with the cable segment in front of or behind the sealing sleeve 12.

[0072] In step S1-4, the glue is injected into the wire passing hole 221 through the glue injection hole 222 to form a first glue fixing part, thereby fixing the motor connecting end 10a in the wire passing hole 221 and achieving secondary waterproof sealing by the waterproof glue.

[0073] Through the above steps, the assembly of the motor connecting end 10a of the lead-out wire 10 is completed, and good waterproof sealing effect between the motor connecting end 10a and the motor shaft 22 is achieved. After the above steps, the three phase wires and the plurality of signal wires extending out of the sheath 111 can be connected to the motor windings inside the motor housing 21, respectively.

[0074] At the controller connecting end 10b, the sheath 111 of the cable 11 needs to be cut short, so that the phase wires and the signal wires extend out of the cut end of the sheath 111, and the plurality of phase wires and the plurality of signal wires are separated from each other and connected to the respective connection terminals of the power supply and / or the controller, which causes the gap 114 in the cable 11 to be exposed outward. The controller end connecting assembly is used to achieve waterproof sealing at this end.

[0075] Fig. 9 is an exploded view of the structure of the controller end connecting assembly in the embodiment.

[0076] As shown in Figs. 1 and 9, at the controller connecting end 10b, the controller end connecting assembly 16 includes a core wire branch fixing member 161, a fastening ring 162, a second glue fixing part 163, a fixing sleeve 164, and a waterproof sealing sleeve 165.

[0077] The core wire branch fixing member 161 is used to fix and seal the relative positions of the plurality of phase wires and the plurality of signal wires extending to the outside of the sheath 111.

[0078] Fig. 10 is a perspective view of the core wire branch fixing member in the embodiment.

[0079] As shown in Fig. 10, the core wire branch fixing member 161 is generally short cylindrical in shape, has three phase wire fixing holes and six signal wire fixing holes, all of which pass through the axial direction of the core wire branch fixing member 161 and are circular in axial cross section. For ease of description, the three phase wire fixing holes are denoted as first to third phase wire fixing holes 1611a-1611c, and the six signal wire fixing holes are denoted as first to sixth signal wire fixing holes 1612a-1612f.

[0080] The three phase line fixing holes are respectively used for the three phase lines to pass through. In the state without external force, the inner diameter (hole diameter) of the phase line fixing hole is slightly smaller than the outer diameter of the phase line, so that after the phase line passes in, the interference fit between the two can be achieved, so that the inner side wall of the phase line fixing hole and the outer circumferential surface of the corresponding phase line are sealed.

[0081] The six signal line fixing holes are respectively used for the six signal lines to pass through. Similarly, in the state without external force, the inner diameter (hole diameter) of the signal line fixing hole is slightly smaller than the outer diameter of the signal line, so that after the signal line passes in, the interference fit between the two can be achieved, so that the inner side wall of the signal line fixing hole and the outer circumferential surface of the signal line are sealed.

[0082] From the axial direction of the core line branch fixing piece 161, on one end surface 1613 in the axial direction, the three phase line fixing holes are located at the three corners of an equilateral triangle, wherein the first phase line fixing hole 1611a is located in the middle of the end surface 1613.

[0083] In this embodiment, the material of the core line branch fixing piece 161 is nitrile rubber (NBR). In the state without external force, the outer diameter of the core line branch fixing piece 161 is 10 mm, the axial length is 5 mm to 6 mm, and the hole diameter of the phase line fixing hole is 2.5 mm. The hole diameter of the signal line fixing hole is 0.8 mm to 1.2 mm. When assembled on one end of the cable 11, the distance between the core line branch fixing piece 161 and one end of the sheath 111 is about 10 mm.

[0084] Figure 11 is a structure diagram one in the controller connection end assembly process in this embodiment.

[0085] As shown in Figure 11, after the core line branch fixing piece 161 is assembled on one end of the cable 11, the first to third phase lines 22a-22c pass through the first to third phase line fixing holes 1611a-1611c one by one. Among them, the first phase line 22a located on the radial side of the sheath 111 passes through the first phase line fixing hole 1611a in the middle, so that the branch inclined portion of the first phase line 22a between the sheath 111 and the core line branch fixing piece 161 is inclined along the D1 direction towards the central axis A1; at this position, the branch inclined portion of the second phase line 22b and the branch inclined portion of the third phase line 22c are inclined along the D1 direction towards the direction away from the central axis A1. From the side, the branch inclined portion of the first phase line 22a and the branch inclined portion of the second phase line 22b / third phase line 22c are staggered in X shape. After passing through the core line branch fixing piece 161, in the axial cross section, the three phase lines are arranged in a triangular shape.

[0086] The first to sixth signal lines 23a to 23f pass through the first to sixth signal line fixing holes 1612a to 1612f one by one. The branch inclined portions of the plurality of signal lines between the sheath 111 end and the core line branch fixing member 161 are inclined in the D1 direction toward the direction away from the central axis A1. The inclined angles of the branch inclined portions of the respective signal lines are different, and the branch inclined portions of the signal lines on both sides of the circular arc arrangement are slightly staggered with the branch inclined portions of the signal lines in the middle portion when viewed from the side. After passing through the core line branch fixing member 161, the six phase lines are arranged in a circular arc shape on the outer side of the three phase lines in the axial cross section. It can be seen that after the core line branch fixing member 161 is installed at the end of the cable 11, the plurality of core lines are fixed and branched by the core line branch fixing member 161, the spacing between the core lines is increased, and the arrangement of the core lines is more regular, which is conducive to subsequent wiring.

[0087] The second adhesive fixing portion 162 is provided between the core line branch fixing member 161 and the end of the sheath 111, and wraps and fixes the branch inclined portions of the plurality of core lines, to avoid breakage and cracking of the branch inclined portions. The second adhesive fixing portion 162 is formed by injecting adhesive at the above position. The formed adhesive fixing portion 162 has a generally conical shape, the bottom surface of the cone is located at the end surface 163 of the core line branch fixing member 161, the apex of the cone faces the end of the sheath 111, and the formed adhesive fixing portion 162 has a plurality of through holes corresponding to the above shape of the branch inclined portions of the core lines.

[0088] Since the branch inclined portions of the plurality of core lines have the above shape, that is, the X-shaped stagger between the relatively thick phase lines, the stagger between the signal lines, and no large gap between the plurality of core lines, when the adhesive is injected, the adhesive is not easy to drip, and the position distribution of the core lines in the finally formed second adhesive fixing portion 162 is relatively uniform, and the stress on each part of the second adhesive fixing portion 162 is relatively uniform.

[0089] In this embodiment, the second adhesive fixing portion 162 is composed of silicone rubber.

[0090] The fastening ring 163 is in the shape of a short cylinder, and has a higher strength than the core line branch fixing member 161. After the phase lines and the signal lines pass through the core line branch fixing member 161, the fastening ring 163 is sleeved on the core line branch fixing member 161 to press it, thereby further improving the waterproof sealing between the phase lines / signal lines and the core line branch fixing member 161. In the state without external force, the inner diameter of the fastening ring 163 is slightly smaller than the outer diameter of the core line branch fixing member 161, so that the core line branch fixing member 161 can be pressed after being sleeved. The axial length of the fastening ring 163 is substantially the same as the axial length of the core line branch fixing member 161.

[0091] In this embodiment, the fastening ring 163 is an aluminum ring.

[0092] Fig. 12 is a structural view II of the controller connection end during assembly in the present embodiment.

[0093] As shown in Fig. 12, after the fastening ring 163 is further assembled on the core wire branch fixing member 161, the plurality of core wires are further compressed between the core wire branch fixing member 161.

[0094] The fixing sleeve 164 is used to cover and tightly wrap the outer periphery of the one end of the sheath 111, the glue fixing portion 162 and the fastening ring 163, and further fix the relative positions thereof. The shape of the fixing sleeve 164 corresponds to the shape of the parts to be covered and tightly wrapped. In the present embodiment, the fixing sleeve 164 is a double-walled heat-shrinkable sleeve made of polyethylene (PE) material, which is tightly wrapped around the outer periphery of the above-mentioned parts after being heated and shrunk. After being heat-shrunk, the axial length thereof is about 20 mm. In the figure, only the general structure of the fixing sleeve 164 is shown. In fact, after the heat-shrinkable sleeve is tightly wrapped around the above-mentioned parts, the shape thereof has an arc-shaped portion, and the inner end of the axial direction is turned inwards to cover the edge portion of one axial end surface of the core wire branch fixing member 161.

[0095] Fig. 13 is a structural view III of the controller connection end during assembly in the present embodiment.

[0096] As shown in Fig. 13, after the fixing sleeve 164 is further assembled, the one end of the sheath 111, the second glue fixing portion 162 and the fastening ring 163 are covered in the fixing sleeve 164, and the relative positions thereof are fixed by the fixing sleeve 164.

[0097] The waterproof sealing sleeve 165 is further covered on the fixing sleeve 164 and the one end of the sheath 111 extending from the fixing sleeve 164, so as to achieve better overall waterproof effect.

[0098] The waterproof sealing sleeve 165 is made of waterproof material, which includes a sheath covering portion 1651 and a sleeve covering portion 1652 formed integrally. The sheath covering portion 1651 is used to cover a section of the sheath 111 outside the fixing sleeve 164, and the shape thereof is generally conical table-shaped, and the inside thereof has a sheath fixing hole extending along the axial direction. In the state without external force, the inner diameter of the sheath fixing hole is slightly smaller than the outer diameter of the sheath 111, so that the sheath 111 can be tightly wrapped after being assembled thereon. The axial length of the sleeve covering portion 1652 is greater than the axial length of the fixing sleeve 164, which is used to cover the fixing sleeve 164 entirely to achieve further waterproof sealing. The shape of the sleeve covering portion 1652 is generally cylindrical, and the end thereof away from the sheath covering portion 1651 has a core wire outlet for the plurality of core wires to pass out, and the inside thereof has a fixing sleeve containing cavity in communication with the sheath fixing hole, and the inner wall of the fixing sleeve containing cavity is generally in close contact with the outer periphery of the fixing sleeve 164.

[0099] In this embodiment, the waterproof sealing sleeve 165 is made of NBR, and after assembly, its axial length is about 45 mm, and the outer diameter of the sleeve covering portion 1652 is about 15 mm.

[0100] Fig. 14 is a structural diagram of the controller connection end during assembly in this embodiment.

[0101] As shown in Fig. 14, after further assembling the waterproof sealing sleeve 165, the waterproof sealing sleeve 165 completely covers the fixed sleeve 164 and the portion of the sheath 111 beside the fixed sleeve 164. After assembly, the plurality of core wires extend outward from the closed cable connection assembly 16, and when water droplets adhere to the extending core wire portions, since the core wire branch fixing member 161 tightly seals each core wire, the water droplets cannot slide along the core wires into the gap 114, but can only slide along the outside of the waterproof sealing sleeve 165. Since the portion of the core wires close to the end of the sheath 111 is completely covered by the adhesive fixing portion 162, the fixed sleeve 164 and the waterproof sealing sleeve 165, the water droplets cannot reach this portion of the core wires, and thus water droplets and the like cannot enter the gap 114 in the cable 11 from this end, and the closed cable connection assembly 16 achieves closed waterproof sealing of the end of the cable 11.

[0102] Fig. 15 is an assembly flowchart of the controller connection end in this embodiment.

[0103] As shown in Fig. 15, the controller end connection assembly 16 can be assembled to the end of the cable 11 to form the controller connection end 10b according to the following steps:

[0104] Step S2-1, pass each core wire through the corresponding fixing hole of the core wire branch fixing member 161, and assemble the core wire branch fixing member 161 at a predetermined distance from the end of the sheath 111 to form the structure shown in Fig. 11.

[0105] The corresponding relationship between the plurality of phase wires and the plurality of phase wire fixing holes of the core wire branch fixing member 161, and the corresponding relationship between the plurality of signal wires and the plurality of signal wire fixing holes of the core wire branch fixing member 161 are as described above, so that the branch inclined portions of the phase wires and the signal wires form a staggered structure.

[0106] Step S2-2, inject adhesive between the core wire branch fixing member 161 and the end of the sheath 111 to form the second adhesive fixing portion 162.

[0107] As described above, when injecting adhesive at the branch inclined portions of the phase wires and the signal wires, the adhesive is made to form a substantially conical shape.

[0108] Step S2-3, assemble the fastening ring 163 on the outer ring of the core wire branch fixing member 161 to form the structure shown in Fig. 12.

[0109] Step S2-4, a fixed sleeve 164 is fixed on the outer periphery of the one end of the sheath 111, the glue fixing part 162 and the fastening ring 163 to form a structure as shown in Fig. 13.

[0110] As described above, the fixed sleeve 164 is a double-walled heat-shrinkable sleeve, which is sleeved on the outer periphery of the above-mentioned components and is heated to shrink and tightly wrap around the outer periphery of the above-mentioned components.

[0111] Step S2-5, a waterproof sealing sleeve 165 is fixed on the outer periphery of the one end of the sheath 111, the fixed sleeve 164 and the core wire part close to the fixed sleeve 164 to form a structure as shown in Fig. 14.

[0112] Through the above steps, the assembly of the controller connection end 10b of the lead-out wire 10 is completed, and the controller connection end 10b has good waterproof sealing effect. After the above steps, the three phase wires and the plurality of signal wires extending from the sheath 111 can be respectively connected to a plurality of connection terminals of an external power supply and / or a controller, so as to realize the electrical connection between the external power supply and / or the controller and the motor winding of the hub motor 100.

[0113] Effects of the embodiment

[0114] According to the closed hub motor lead-out wire, the hub motor and the new energy vehicle provided by the embodiment, the lead-out wire includes a cable, a motor end connection sealing assembly and a controller end sealing assembly respectively arranged at two ends of the cable, and a waterproof isolation layer is further arranged in the sheath of the cable. Therefore, one end of the cable can be sealingly connected with a motor shaft through the motor end connection sealing assembly, so as to prevent external dust or water droplets from entering the inside of the hub motor body from the one end of the cable and the motor shaft. The other end of the cable can be waterproofly sealed through the controller end sealing assembly, so as to prevent external dust or water droplets from entering from the gap between the core wires of the one end of the cable. In addition, the cable has a waterproof isolation layer, so that the cable itself has better waterproof effect. Therefore, the lead-out wire can achieve all-around and higher-level waterproof effect. Further, the controller end sealing assembly includes a core wire branch fixing member and a waterproof sealing sleeve, so that at the one end of the cable for connecting an external power supply and / or a controller, a plurality of core wires in the cable can be branched and circumferentially sealed through a plurality of core wire fixing holes in the core wire branch fixing member, and the core wire branch fixing member and the one end of the sheath are tightly wrapped by the waterproof sealing sleeve, so as to completely shield the gap between the core wires. This is conducive to subsequent wire arrangement and wiring, and can also prevent water droplets splashed on the core wires from flowing down the core wires and entering the gap between the core wires, so as to effectively realize waterproof sealing at the one end of the cable.

[0115] Further, the motor end connection sealing assembly comprises a sealing sleeve and a first glue fixing part, the sealing sleeve has multiple elastic sealing parts, so that the cable and the through hole of the motor shaft can be sealed once by the elastic deformation of the elastic sealing parts, and the first glue fixing part can realize secondary waterproof sealing, so that the waterproof performance is better.

[0116] Further, the circumferential section of the elastic sealing part of the sealing sleeve is a right triangle, and the outer edge has a round corner, so that the sealing sleeve is easier to be installed into the through hole, and the outer edge is easier to form a flat ring under radial pressure, so that the elastic sealing part can be better attached to the inner wall of the through hole, and the edge of the elastic sealing part is not easy to deform after long-term use, so that better waterproof sealing effect can be achieved.

[0117] Further, the circumferential section of the elastic sealing part of the sealing sleeve is a triangle, has an inclined second guide end face, and the sealing sleeve also has a guide end part with an inclined first guide end face, so that when the sealing sleeve is installed from the opening of the through hole, the first and second guide end faces can guide the sealing sleeve to enter the through hole more easily, so that the assembly is more convenient.

[0118] Further, the sealing sleeve has three elastic sealing parts, so that even if one of the elastic sealing parts deteriorates or fails due to some reason, the other two elastic sealing parts can still achieve effective waterproof sealing effect.

[0119] Further, a protective sleeve is arranged at the motor connection end, the protective sleeve is spaced apart from the sealing sleeve by a predetermined distance, so that when the sealing sleeve moves in a small range in the first hole section of the through hole, the through hole is located at the protective sleeve, so that the installation position of the sealing sleeve in the through hole can be easily adjusted, and the hole end edge of the through hole does not directly contact the sheath of the cable outer layer when the sealing sleeve is installed and the installation position of the sealing sleeve is adjusted, so that the relatively sharp hole end edge cannot damage the sheath and affect the waterproof insulation effect of the cable. When the user adjusts the installation position of the sealing sleeve, he does not need to worry about this problem, and the installation and adjustment of the sealing sleeve are more convenient and fast.

[0120] Further, a protective spring is arranged at the motor connection end, the adjacent two coils of the protective spring are attached to each other when not subjected to external force, so that when the protective spring is bent, the coils limit the protective spring and the cable therein, so that the protective spring and the cable therein cannot have a relatively sharp turning part, so that the sheath of the cable surface cannot have a fold at the turning part, and surface defects cannot occur, so that the waterproof insulation effect of the cable is affected.

[0121] In the embodiment, the core wire branch fixing member has a plurality of phase wire fixing holes and a plurality of signal wire fixing holes corresponding to the cable structure, through which a plurality of phase wires and a plurality of signal wires pass, so as to separate the plurality of core wires, and according to the arrangement of the plurality of phase wire fixing holes and the plurality of signal wire fixing holes, the arrangement of the plurality of separated core wires is relatively more regular, which is beneficial to subsequent wire arrangement and wiring. Further, the fixing holes and the core wires are in interference fit, and in addition, the waterproof sealing sleeve covers the core wire branch fixing member and one end of the sheath, so that the core wires and the core wire branch fixing member are waterproofly sealed, and the gap at the one end of the cable is completely shielded, so that external water droplets cannot enter the gap in the cable, and the waterproof sealing effect is better.

[0122] Further, the arrangement of the plurality of phase wire fixing holes and the plurality of signal wire fixing holes and the threading mode of the plurality of phase wires and the plurality of signal wires make the branch inclined portions of the core wires interleave with each other, so that the processing of the glue fixing portion is easier, and the distribution of the core wires in the formed glue fixing portion is relatively more uniform, and the stress of the glue fixing portion is also more uniform.

[0123] Further, a high-strength fastening ring is further sleeved on the core wire branch fixing member, which further presses and fixes the core wire branch fixing member and the core wires, and a fixing sleeve that fixes the relative positions of the fastening ring, the glue fixing portion and the one end of the sheath is further covered, so that even in the case of vibration of the electrical equipment, external force pulling of the cable and the like, the core wire branch fixing member and the core wires can maintain effective waterproof sealing, and the reliability of the controller end sealing assembly is further improved.

[0124] Further, the fastening ring is an aluminum ring, which is light in quality and easy to assemble; the fixing sleeve is a polyethylene double-wall heat-shrinkable sleeve, which has hot melt glue in the inner layer, is easy to assemble, and can adhere to relatively complex internal structures through the hot melt glue in the inner layer to achieve sealing and waterproofing, thereby further improving the waterproof performance of the controller end sealing assembly. In addition, the working temperature range of the polyethylene double-wall heat-shrinkable sleeve is large, and it can be applied to sealing various types of cable wire harnesses.

[0125] In the embodiment, the waterproof isolation layer is waterproof yarn, which has good waterproof effect and is easy to assemble; the sealing sleeve, the core wire branch fixing member and the waterproof sealing sleeve are all nitrile rubber parts, which have good waterproof performance and high wear resistance, can practically achieve waterproof sealing in a long-term use process, and have good heat resistance, which is also applicable to being arranged at a cable and equipment prone to heating. In addition, these materials are all conventional materials, and the related technology is mature, so that the lead-out wire can be efficiently and mass-produced.

[0126] The above embodiments are only used for illustrating the specific implementation of the present application, and the present application is not limited to the description range of the above embodiments. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

[0127] For example, in the above embodiment, the cable has a sheath, an insulation layer, a waterproof isolation layer (waterproof yarn), and a plurality of cores from the outer layer to the inner layer. In an alternative, the cable can have other structures, such as further having other intermediate layers, etc.

[0128] In the above embodiment, the wire hole on the motor shaft is a two-section structure. In an alternative, the wire hole on the motor shaft can have other structures, such as a circular arc-shaped wire hole.

[0129] In the above embodiment, the cross section of the elastic sealing part on the sealing sleeve is approximately a right triangle. In an alternative, the cross section of the elastic sealing part can be an acute triangle, or a right triangle or an acute triangle with a convex edge. Alternatively, the multiple turns of the elastic sealing part can be a combination of different shapes, such as the cross section of the first turn of the elastic sealing part from the leading end being a right triangle, and the cross section of the subsequent turns being an acute triangle.

[0130] In the above embodiment, there are three phase lines and six signal lines, and the core branch fixing member has a corresponding number of phase line fixing holes and signal line fixing holes. In an alternative, the number of phase lines and signal lines can be different from the embodiment, and the core branch fixing member can have a corresponding number of phase line fixing holes and signal line fixing holes to achieve the corresponding technical effects.

[0131] In the above embodiment, based on the arrangement of the cores in the example cable, the phase line fixing holes on the core branch fixing member are arranged in a triangular shape, and the signal line fixing holes are arranged in a circular arc shape on one side of the cross section. In an alternative, based on the arrangement of the cores in another cable, the phase line fixing holes and the signal line fixing holes can have other suitable arrangements.

[0132] In the above embodiment, the material of the core branch fixing member and the waterproof sealing sleeve is nitrile rubber, and the adhesive fixing part is made of silicone rubber. In an alternative, the core branch fixing member and the waterproof sealing sleeve can be made of other waterproof materials with certain elasticity, and the adhesive fixing part can be made of other suitable adhesives.

Claims

1. A closed type wheel hub motor lead wire, which is penetrated in a motor shaft of a wheel hub motor, for electrically connecting the wheel hub motor with an external controller, characterized in that, The cable has a plurality of core wires, a waterproof isolation layer covering the plurality of core wires, and a sheath covering the waterproof isolation layer, the core wires including at least three phase wires and a plurality of signal wires; The motor end connection sealing assembly is arranged at one end of the cable and is used for sealingly connecting the one end and the motor shaft; And The controller end sealing assembly is arranged at the other end of the cable and is used for sealing the other end, The controller end sealing assembly includes: A core wire branch fixing member arranged on the plurality of core wires and having a plurality of core wire fixing holes in interference fit with the plurality of core wires, for branching and circumferentially waterproof sealing the plurality of core wires; and A waterproof sealing sleeve covering the outside of the core wire branch fixing member and one end of the sheath, for waterproof sealing the other end of the cable, The core wire branch fixing member and the one end of the sheath have a predetermined spacing therebetween, The part of the core wires between the core wire branch fixing member and the one end of the sheath forms a branch inclined portion, The controller end sealing assembly further includes: A glue fixing portion arranged on the branch inclined portion of the plurality of core wires and formed by injecting adhesive at the position, for glue fixing the branch inclined portion; A fastening ring sleeved and compressed on the core wire branch fixing member, further compressing the core wire branch fixing member and the plurality of core wires; and A fixing sleeve covering the fastening ring, the glue fixing portion, and the one end of the sheath, for fixing the relative positions thereof, The waterproof sealing sleeve covers the outside of the fixing sleeve and the one end of the sheath.

2. The enclosed hub motor lead wire according to claim 1, wherein: The plurality of core wire fixing holes include a plurality of phase wire fixing holes and a plurality of signal wire fixing holes, wherein, In the axial section of the core wire branch fixing member, the plurality of signal wire fixing holes are distributed on the edge portion of one side of the axial section.

3. The enclosed hub motor lead wire according to claim 1 or 2, wherein: The core wire fixing holes of the core wire branch fixing member are in interference fit with the corresponding core wires, and the waterproof sealing sleeve is in interference fit with one end of the cable, wherein The core wire branch fixing member is a nitrile rubber member, The waterproof sealing sleeve is a nitrile rubber sleeve. In which:

4. The enclosed hub motor lead of claim 1, The motor end connection sealing assembly includes: A sealing sleeve arranged on one end of the cable and arranged in a wire hole of the motor shaft, for primary waterproof sealing between the cable and the wire hole; and A first glue fixing portion arranged between at least one of the sealing sleeve and the cable and the wire hole, for secondary waterproof sealing between the cable and the wire hole, The sealing sleeve has: A sleeve fixing portion sleeved on the cable and in interference fit with the cable; At least one elastic sealing portion formed on the outer periphery of the sleeve fixing portion, for abutting against the inner wall of the wire hole.

5. The enclosed hub motor lead wire according to claim 4, wherein: ​ wherein, The motor end connection sealing assembly further comprises: a protective sleeve made of wear-resistant material, sleeved on the cable and close to the sealing sleeve, and in interference fit with the cable, for preventing the cable from contacting the hole end edge of the wire hole. 6.The enclosed hub motor lead-through according to claim 4 or 5, characterized in that: wherein the sealing sleeve is a nitrile rubber sleeve, the first glue fixing part is made of silica gel.

7. A wheel hub motor arranged in a new energy vehicle, characterized in that, Comprise: a hub motor body having a motor shaft with a wire hole; and an enclosed hub motor lead-through arranged in the wire hole, wherein the enclosed hub motor lead-through is any one of claims 1-6.

8. A new energy vehicle, characterized in that, Comprise: a hub motor, wherein the hub motor is the hub motor of claim 7.

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