Cooling pipe assembly and vehicle

Abstract

The utility model relates to a cooling pipe assembly and a vehicle, and the cooling pipe assembly comprises a main pipe body which is disposed between a motor stator and a bearing gear device, and is used for the circulation of a cooling lubricating liquid; the first branch pipe assembly is arranged on one side of the main pipe body and communicates with the main pipe body, a plurality of first spraying holes are formed in the first branch pipe assembly, and orifices of the first spraying holes face the motor stator and / or the bearing gear device; the second branch pipe assembly is arranged on the other side of the main pipe body and communicates with the main pipe body, a plurality of second spraying holes are formed in the second branch pipe assembly, and orifices of the second spraying holes face the motor stator and / or the bearing gear device; and the motor stator and the bearing gear device are completely covered and sprayed through the first spray holes and the second spray holes.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a cooling pipe assembly and a vehicle. Background Art

[0002] Generally speaking, the motor stator of an extended-range vehicle needs to be cooled, and the bearing and gear devices that cooperate with the motor stator (such as differentials, gear sets and bearings) need to be lubricated. The cooling and lubrication of the motor stator, differential, gear set and bearings are all achieved by actively spraying oil through cooling oil pipes.

[0003] However, currently, multiple cooling oil pipes are often required to cool and lubricate the motor stator and differential, gear set and bearings of the extended-range vehicle respectively. A single cooling oil pipe cannot take into account the cooling and lubrication of the motor stator and differential, gear set and bearings at the same time, which easily leads to cumbersome installation and occupies a large space. Utility Model Content

[0004] The purpose of the present application is to provide a cooling pipe assembly to solve the problem that multiple cooling oil pipes are often needed to cool and lubricate the motor stator and differential, gear set and bearings of the extended-range vehicle respectively. A single cooling oil pipe cannot take into account the cooling and lubrication of the motor stator and differential, gear set and bearings at the same time, which easily leads to cumbersome installation and large space occupation. The second purpose is to provide a vehicle.

[0005] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0006] A cooling pipe assembly comprises: a main pipe body, which is used to be arranged between a motor stator and a bearing gear device and is used to circulate cooling lubricating liquid; a first branch pipe assembly, which is arranged on one side of the main pipe body and is connected to the main pipe body, and a plurality of first spray holes are opened on the first branch pipe assembly, and the openings of the plurality of first spray holes are respectively oriented toward the motor stator and\or the bearing gear device; a second branch pipe assembly, which is arranged on the other side of the main pipe body and is connected to the main pipe body, and a plurality of second spray holes are opened on the second branch pipe assembly, and the openings of the plurality of second spray holes are respectively oriented toward the motor stator and\or the bearing gear device; the motor stator and the bearing gear device are completely covered and sprayed through the first spray holes and the second spray holes.

[0007] According to the above technical means, the cooling and lubricating liquid flowing in the main pipe body can be sprayed onto the motor stator and the bearing gear device through the first spray hole of the first branch pipe assembly and the second spray hole of the second branch pipe assembly, so as to realize cooling and lubrication of the electronic stator and the bearing gear device. Compared with the existing need to set up multiple main pipe bodies to spray onto the motor stator and the bearing gear device respectively, this embodiment only needs one main pipe body, and extends the first branch pipe assembly and the second branch pipe assembly on both sides of the main pipe body according to the distribution of the motor stator and the bearing gear device, and makes the orifices of several first spray holes on the first branch pipe assembly and the orifices of several second spray holes on the second branch pipe assembly face the motor stator and the bearing gear device, so that the motor stator and the bearing gear device can be completely covered and sprayed through the several first spray holes and the second spray holes, which is simple to install and occupies a small space.

[0008] Furthermore, the main body is arranged in a split-petal type, wherein the main body includes a first half-tube body and a second half-tube body, the first branch pipe assembly is arranged on the first half-tube body and is integrally formed with the first half-tube body, and the second branch pipe assembly is arranged on the second half-tube body and is integrally formed with the second half-tube body.

[0009] According to the above technical means, the main pipe body is arranged in a petal-type, which facilitates the integrated arrangement of the first branch pipe assembly and the first half pipe body, and the integrated arrangement of the second branch pipe assembly and the second half pipe body, and has good processability.

[0010] Furthermore, the first half tube body and the second half tube body are fixed by welding.

[0011] According to the above technical means, by setting the connection mode of the first half tube body and the second half tube body to laser welding, welding slag is not easily generated, the cleanliness is high, the reliability is good, and the explosion pressure resistance is high.

[0012] Furthermore, a plurality of welding grooves are formed on one side of the first half tube body close to the second half tube body, and a welding boss matching the welding grooves is provided on the second half tube body, and the welding boss is embedded in the welding grooves.

[0013] According to the above technical means, by opening a welding groove on the first half tube body and opening a welding boss matching the welding groove on the second half tube body, the first half tube body and the second half tube body can be conveniently fixed together, thereby facilitating laser welding between the first half tube body and the second half tube body.

[0014] Further, the first half tube body is a light-transmitting half tube body, and the second half tube body is a light-impermeable half tube body; or, the first half tube body is a light-impermeable half tube body, and the second half tube body is a light-transmitting half tube body.

[0015] According to the above technical means, with the cooperation of the light-transmitting half tube body and the non-light-transmitting half tube body, the first half tube body and the second half tube body are clearly distinguished during laser welding, thereby facilitating laser welding.

[0016] Further, the first branch pipe assembly includes a plurality of first branch pipes arranged in parallel, the first spray hole is arranged on the first branch pipe, the second branch pipe assembly includes a plurality of first branch pipes arranged in parallel, the second spray hole is arranged on the second branch pipe, the aperture of the first spray hole is smaller than the aperture of the second spray hole, and the aperture of the second spray hole facing the motor stator is larger than the aperture of the second spray hole facing the bearing gear device.

[0017] According to the above technical means, the cooling lubricant is reasonably distributed so that the cooling and lubrication of the cooling lubricant through the first spray hole and the second spray hole is more cost-effective.

[0018] Further, the second branch pipe includes a straight-through pipe and an elastic plugging cap, wherein the elastic plugging cap includes a pressing portion and a buckle portion, the pressing portion is connected to the buckle portion, a clearance groove is provided on the side of the buckle portion away from the pressing portion, the buckle portion is located on one side of the clearance groove to form a first hook, and the buckle portion is located on the other side of the clearance groove to form a second hook, a hook step is provided on the inner side wall of the straight-through pipe on the side close to the plugging cap, the first hook and the second hook are buckled on the hook step, and the first hook and the second hook are tightly attached to the inner side wall of the straight-through pipe on the side wall away from the clearance groove.

[0019] According to the above technical means, the elastic plugging cap can be quickly connected to the straight-through pipe and fit tightly with the straight-through pipe.

[0020] Furthermore, a first plane extending outward is provided at the connection between the pressing portion and the buckle portion, a second plane matching the first plane is provided on the straight-through tube, and the pressing portion is fitted with the second plane of the straight-through tube through the first plane, wherein the second plane covers the first plane.

[0021] According to the above technical means, the pressing portion is tightly fitted with the second plane of the straight-through pipe through the first plane, which can further improve the sealing strength between the straight-through portion and the elastic plugging cap.

[0022] A vehicle comprises the cooling pipe assembly as described above.

[0023] Through the above-mentioned technical means, by setting up a cooling pipe assembly, the problem that multiple cooling oil pipes are often needed to cool and lubricate the motor stator and differential, gear set and bearings of the extended-range vehicle respectively, and a single cooling oil pipe cannot take into account the cooling and lubrication of the motor stator and differential, gear set and bearings at the same time, which easily leads to cumbersome installation and large space occupation.

[0024] Beneficial effects of this application:

[0025] In the present application, the cooling and lubricating liquid flowing in the main pipe body can be sprayed onto the motor stator and the bearing gear device through the first spray hole of the first branch pipe assembly and the second spray hole of the second branch pipe assembly to realize cooling and lubrication of the electronic stator and the bearing gear device. Compared with the existing need to set up multiple main pipe bodies to spray onto the motor stator and the bearing gear device respectively, this embodiment only requires one main pipe body, and by extending the first branch pipe assembly and the second branch pipe assembly on both sides of the main pipe body according to the distribution of the motor stator and the bearing gear device, and making the orifices of several first spray holes on the first branch pipe assembly and the orifices of several second spray holes on the second branch pipe assembly face the motor stator and the bearing gear device, it can be achieved that the motor stator and the bearing gear device can be completely covered and sprayed through the several first spray holes and the second spray holes, the installation is simple, and the space occupied is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the present application installed on a vehicle from one angle.

[0027] Figure 2 This is a schematic diagram of the structure of the present application installed on a vehicle from another angle.

[0028] Figure 3 This is a schematic diagram of the structure of this application.

[0029] Figure 4 This is a schematic diagram of the connection structure between the first half tube body and the second half tube body in the present application.

[0030] Figure 5 This is a schematic diagram of the structure of the second half tube in this application.

[0031] Figure 6 It is a schematic diagram of the structure of the elastic plugging cap in this application.

[0032] Among them, 1-main body; 11-first half body; 111-welding groove; 12-second half body; 121-welding boss; 2-first branch pipe assembly; 21-first branch pipe; 22-first spray hole; 3-second branch pipe assembly; 31-second branch pipe; 311-straight pipe; 3111-hook step; 3112-second plane; 312-elastic plugging cap; 3121-pressing part; 3122-buckle part; 3123-giving groove; 3124-first hook; 3125-second hook Hook; 3126-first plane; 32-second spray hole; 4-motor stator; 41-motor winding; 42-silicon steel sheet; 51-motor rotor bearing gear set; 511-motor rotor shaft gear; 512-motor rotor bearing; 52-intermediate bearing gear set; 521-intermediate shaft driving gear; 522-intermediate shaft driven gear; 523-intermediate bearing; 53-differential; 531-differential housing; 532-main reduction gear; 533-differential bearing; 6-bushing; 7-sealing ring. DETAILED DESCRIPTION

[0033] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0035] See also Figure 1 , Figure 2 and Figure 3, this embodiment proposes a cooling pipe assembly, including a main pipe body 1, a first branch pipe assembly 2 and a second branch pipe assembly 3, the main pipe body 1 is used to be arranged between the motor stator 4 and the bearing gear device, and is used to circulate cooling lubricating liquid, wherein the cooling lubricating liquid can be lubricating oil, the first branch pipe assembly 2 is arranged on one side of the main pipe body 1 and is connected to the main pipe body 1, a plurality of first spray holes 22 are opened on the first branch pipe assembly 2, and the openings of the plurality of first spray holes 22 are respectively facing the motor stator 4 and\or the bearing gear device, the second branch pipe assembly 3 is arranged on the other side of the main pipe body 1 and is connected to the main pipe body 1, a plurality of second spray holes 32 are opened on the second branch pipe assembly 3, and the openings of the plurality of second spray holes 32 are respectively facing the motor stator 4 and\or the bearing gear device, and the motor stator 4 and the bearing gear device are completely covered and sprayed by the first spray holes 22 and the second spray holes 32;

[0036] That is to say, the cooling and lubricating liquid circulating in the main pipe body 1 can be sprayed onto the motor stator 4 and the bearing gear device through the first spray hole 22 of the first branch pipe assembly 2 and the second spray hole 32 of the second branch pipe assembly 3, so as to realize cooling and lubrication of the electronic stator and the bearing gear device. Compared with the existing method that requires setting up multiple main pipe bodies 1 to spray onto the motor stator 4 and the bearing gear device respectively, this embodiment only requires one main pipe body 1, and by extending the first branch pipe assembly 2 and the second branch pipe assembly 3 on both sides of the main pipe body 1 according to the distribution of the motor stator 4 and the bearing gear device, and making the orifices of the several first spray holes 22 on the first branch pipe assembly 2 and the orifices of the several second spray holes 32 on the second branch pipe assembly 3 face the motor stator 4 and the bearing gear device, it can be achieved that the motor stator 4 and the bearing gear device can be completely covered and sprayed through the several first spray holes 22 and the second spray holes 32, the installation is simple, and the space occupied is small.

[0037] See also Figure 3 In this embodiment, the main body 1 is set to an elliptical structure. In this embodiment, by setting the main body 1 to an elliptical structure, under the premise of ensuring the flow rate of coolant in the main body 1, the main body 1 with an elliptical structure has good deformation resistance, is not easy to deform, and is easy to install.

[0038] See also Figure 3 and Figure 4 In the present embodiment, the main pipe body 1 is arranged in a split-petal type, wherein the main pipe body 1 comprises a first half pipe body 11 and a second half pipe body 12, the first branch pipe assembly 2 is arranged on the first half pipe body 11 and is formed integrally with the first half pipe body 11, the second branch pipe assembly 3 is arranged on the second half pipe body 12 and is formed integrally with the second half pipe body 12. By arranging the main pipe body 1 in a split-petal type, the present embodiment facilitates the integral formation of the first branch pipe assembly 2 and the first half pipe body 11, and the integral formation of the second branch pipe assembly 3 and the second half pipe body 12, and has good processability.

[0039] See also Figure 4 In this embodiment, the first half tube body 11 and the second half tube body 12 are both semi-elliptical structures, and the first half tube body 11 and the second half tube body 12 are combined to form a main tube body 1 with an elliptical structure.

[0040] In this embodiment, the first half tube body 11 and the second half tube body 12 are welded and fixed. By setting the connection method of the first half tube body 11 and the second half tube body 12 to a laser welding and fixing method, welding slag is not easily generated, the cleanliness is high, the reliability is good, and the explosion pressure resistance is high.

[0041] See also Figure 4 In this embodiment, a plurality of welding grooves 111 are provided on one side of the first half tube body 11 close to the second half tube body 12, and a welding boss 121 matching the welding groove 111 is provided on the second half tube body 12, and the welding boss 121 is embedded in the welding groove 111. In this embodiment, by providing the welding groove 111 on the first half tube body 11 and the welding boss 121 matching the welding groove 111 on the second half tube body 12, the first half tube body 11 and the second half tube body 12 can be conveniently fixed together, and laser welding between the first half tube body 11 and the second half tube body 12 is convenient.

[0042] See also Figure 3 In this embodiment, the cooling pipe assembly also includes a bushing 6. A bushing hole (not shown in the figure) is opened on the second half tube body 12. The bushing 6 is pressed into the bushing hole by pressure. In this embodiment, the bushing 6 is provided to play a supporting role during the installation process, so that the cooling pipe assembly can be installed on other components through the bushing 6.

[0043] See also Figure 3 In this embodiment, the second half tube body 12 has an inlet portion for introducing cooling lubricating liquid, and the cooling tube assembly further includes a sealing ring 7, which is disposed on the inlet portion to seal the inlet portion.

[0044] Furthermore, in the present embodiment, the opening size of the welding groove 111 is larger than the outer size of the welding boss 121. Through the above arrangement, the present embodiment can not only enable the welding groove 111 to completely enclose the welding boss 121, but also reserve a certain gap. The gap can act as a sol groove when the first half tube body 11 and the second half tube body 12 are welded, further facilitating the laser welding between the first half tube body 11 and the second half tube body 12.

[0045] In this embodiment, the first half tube body 11 can be a light-transmitting half tube body, and correspondingly, the second half tube body 12 is a non-light-transmitting half tube body, or the first half tube body 11 can be a non-light-transmitting half tube body, and correspondingly, the second half tube body 12 is a light-transmitting half tube body, wherein the light-transmitting half tube body refers to a half tube body made of light-transmitting material, and the non-light-transmitting half tube body refers to a half tube body made of non-light-transmitting material. In this embodiment, the first half tube body 11 is a light-transmitting half tube body, and the second half tube body 12 is a non-light-transmitting half tube body. By setting the first half tube body 11 and the second half tube body 12 as a light-transmitting half tube body and a non-light-transmitting half tube body respectively, under the cooperation of the light-transmitting half tube body and the non-light-transmitting half tube body, the first half tube body 11 and the second half tube body 12 are clearly distinguished during laser welding, thereby facilitating laser welding.

[0046] In this embodiment, the first spray holes 22 on the first branch pipe assembly 2 can completely cover the motor stator 4, and the second spray holes 32 on the second branch pipe assembly 3 can completely cover the bearing gear device, or the first spray holes 22 on the first branch pipe assembly 2 can completely cover the bearing gear device, and the second spray holes 32 on the second branch pipe assembly 3 can completely cover the motor stator 4, or the first spray holes 22 on the first branch pipe assembly 2 can partially spray the motor stator 4 and the bearing gear device, and the remaining parts of the motor stator 4 and the bearing gear device are sprayed through the first spray holes 22 on the second branch pipe assembly 3. Several second spray holes 32 are used for spraying, or several first spray holes 22 on the first branch pipe assembly 2 can partially spray the bearing gear device, and the remaining bearing gear device and the motor stator 4 are sprayed through several second spray holes 32 on the second branch pipe assembly 3, or several first spray holes 22 on the first branch pipe assembly 2 can partially spray the motor stator 4, and the remaining motor stator 4 and the bearing gear device are sprayed through several second spray holes 32 on the second branch pipe assembly 3. It can be set accordingly according to the specific layout between the motor stator 4 and the bearing gear device, and the bearing gear device can also be set according to the specific situation.

[0047] In this embodiment, the first branch pipe assembly 2 can be connected by a plurality of intertwined first branch pipes 21, or the first branch pipe assembly 2 can also include a plurality of first branch pipes 21 arranged in parallel, and the second branch pipe assembly 3 can be connected by a plurality of intertwined second branch pipes 31, or the second branch pipe assembly 3 can also include a plurality of first branch pipes 21 arranged in parallel.

[0048] As an example, see Figure 1 , Figure 2 and Figure 3In this embodiment, the first spray holes 22 on the first branch pipe assembly 2 can partially spray the bearing gear device, and the remaining bearing gear device and the motor stator 4 are sprayed through the second spray holes 32 on the second branch pipe assembly 3, wherein the motor stator 4 and the bearing gear device are respectively part of the electric drive assembly, and the bearing gear device includes a motor rotor bearing gear set 51, an intermediate bearing gear set 52 and a differential 53 connected in sequence, the motor stator 4 and the differential 53 are arranged on one side of the electric drive assembly, the motor rotor bearing gear set 51 and the intermediate bearing gear set 52 are arranged on the other side of the electric drive assembly, the motor rotor bearing gear set 51 is connected to the motor rotor, and rotates by the drive of the motor rotor, thereby driving the intermediate bearing gear set 52 and the differential 53 to rotate in sequence, and a support plate (not shown in the figure) is arranged in the direction of the motor rotor bearing gear set 51, the intermediate bearing gear set 52 and the differential 53 in sequence, the support plate is arranged between the motor stator 4 and the motor rotor bearing gear set 51, and the main pipe body 1 is arranged on the support plate.

[0049] Specifically, the motor rotor bearing gear set 51 includes a motor rotor shaft gear 511 and a motor rotor bearing 512, and the motor rotor shaft gear 511 is respectively connected to the motor rotor and the motor rotor bearing 512. The intermediate bearing gear set 52 includes an intermediate shaft driving gear 521, an intermediate shaft driven gear 522 and an intermediate bearing 523, and the intermediate shaft driving gear 521 is respectively connected to the motor rotor shaft gear 511, the intermediate shaft driven gear 522 and the intermediate bearing 523. The differential 53 includes a differential housing 531, a main reduction gear 532 and a differential bearing 533, and the differential housing 531 is respectively connected to the main reduction gear 532 and the differential bearing 533, and the main reduction gear 532 is connected to the intermediate shaft driven gear 522. That is to say, the rotation of the motor rotor drives the motor rotor shaft gear 511 to rotate, thereby driving the intermediate shaft driving gear 521, the intermediate shaft driven gear 522 and the main reduction gear 532 to rotate in turn. The motor stator 4 includes motor windings 41 on both sides and silicon steel sheets 42 between the motor windings 41 on both sides.

[0050] Among them, the first branch pipe assembly 2 is arranged on one side of the main pipe body 1 close to the motor rotor bearing gear set 51 and the intermediate bearing gear set 52, and the second branch pipe assembly 3 is arranged on one side of the main pipe body 1 close to the motor stator 4 and the differential 53. The first branch pipe assembly 2 includes a plurality of parallel first branch pipes 21, and the second branch pipe assembly 3 includes a plurality of parallel second branch pipes 31. Compared with the first branch pipe assembly 2 and the second branch pipe assembly 3 respectively arranged in a form connected by a plurality of intertwined first branch pipes 21 and second branch pipes 31, this embodiment is simple to manufacture by arranging a plurality of parallel first branch pipes 21 and second branch pipes 31, and it is convenient to take care of the first spray hole 22 or the second spray hole 32.

[0051] See also Figure 1 , Figure 2 and Figure 3 In this embodiment, three first branch pipes 21 are provided, and four second branch pipes 31 are provided, wherein a plurality of first spray holes 22 on two first branch pipes 21 are respectively aimed at the motor rotor shaft gear 511 and the motor rotor bearing 512 for spraying, and a plurality of first spray holes 22 on another first branch pipe 21 are respectively aimed at the intermediate shaft driving gear 521, the intermediate shaft driven gear 522 and the intermediate bearing 523 for spraying; a plurality of second spray holes 32 on three second branch pipes 31 are respectively aimed at the motor winding 41 and the silicon steel sheet 42 on both sides of the motor stator 4 for spraying, and a plurality of second spray holes 32 on another second branch pipe 31 are respectively aimed at the differential housing 531, the main reduction gear 532 and the differential bearing 533. Of course, this embodiment includes but is not limited to the above-mentioned cases.

[0052] In the present embodiment, the aperture of the first spray hole 22 is smaller than that of the second spray hole 32, and the aperture of the second spray hole 32 facing the motor stator 4 is larger than that of the second spray hole 32 facing the bearing gear device (differential 53). That is to say, in the present embodiment, the aperture of the second spray hole 32 corresponding to the motor stator 4 with greater heat generation is set larger, while the aperture of the second spray hole 32 corresponding to the differential 53 that needs to be lubricated and the aperture of the first spray hole 22 corresponding to the motor rotor bearing gear set 51 and the intermediate bearing gear set 52 that need to be lubricated are set smaller, so as to reasonably distribute the cooling lubricant, so that the cooling and lubrication of the cooling lubricant through the first spray hole 22 and the second spray hole 32 is more cost-effective.

[0053] The aperture of the first spray hole 22 is set to 1-1.6 mm, and the aperture of the second spray hole 32 is set to 1.4-2 mm.

[0054] For further information, see Figure 3 , Figure 5 and Figure 6In this embodiment, because the second branch pipe 31 corresponding to the motor stator 4 is to cover the motor windings 41 on both sides of the motor stator 4 and the silicon steel sheets 42 between the motor windings 41 on both sides, the length of the second branch pipe 31 is longer, which is greater than the length of the first branch pipe 21. In order to facilitate the manufacture of the second branch pipe 31, the second branch pipe 31 includes a straight pipe 311 and an elastic plugging cap 312. The straight pipe 311 is integrally arranged with the second half pipe body 12. The elastic plugging cap 312 includes a pressing portion 3121 and a buckle portion 3122. The pressing portion 3121 is connected to the buckle portion 3122. The buckle portion 3122 is provided with a clearance groove 3121 on the side away from the pressing portion 3121. 123, the buckle portion 3122 is located on one side of the give way groove 3123 to form a first hook 3124, and the buckle portion 3122 is located on the other side of the give way groove 3123 to form a second hook 3125, and a hook step 3111 is provided on the inner wall of the straight-through tube 311 on the side close to the plugging cap, and the first hook 3124 and the second hook 3125 are buckled on the hook step 3111. At this time, the first hook 3124 and the second hook 3125 are away from the side wall of the give way groove 3123 and are tightly attached to the inner wall of the straight-through tube 311. Through the above arrangement, the elastic plugging cap 312 can be quickly connected to the straight-through tube 311 and fit tightly with the straight-through tube 311.

[0055] For further information, see Figure 5 and Figure 6 In this embodiment, a first plane 3126 extending outward is provided at the connection between the pressing portion 3121 and the snap portion 3122, and a second plane 3112 matching the first plane 3126 is provided on the straight-through tube 311. The pressing portion 3121 is fitted with the second plane 3112 of the straight-through tube 311 through the first plane 3126 to further improve the sealing strength between the straight-through portion and the elastic plugging cap 312, wherein the second plane 3112 covers the first plane 3126.

[0056] This embodiment also proposes a vehicle, which includes the cooling pipe assembly as described above. This embodiment provides a cooling pipe assembly to solve the problem that multiple cooling oil pipes are often needed to cool and lubricate the motor stator and differential, gear set and bearing of the extended-range vehicle respectively, and a single cooling oil pipe cannot take into account the cooling and lubrication of the motor stator and differential, gear set and bearing at the same time, which is easy to cause cumbersome installation and occupy a large space.

[0057] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present application is within the protection scope of the present application.

Claims

1. A cooling pipe assembly, characterized in that: include: A main body, which is used to be arranged between the motor stator and the bearing gear device and is used to circulate cooling lubricating liquid; A first branch pipe assembly, which is arranged on one side of the main pipe body and communicated with the main pipe body, and the first branch pipe assembly is provided with a plurality of first spray holes, and the openings of the plurality of first spray holes are respectively oriented toward the motor stator and / or the bearing gear device; A second branch pipe assembly is arranged on the other side of the main pipe body and is connected to the main pipe body. A plurality of second spray holes are opened on the second branch pipe assembly. The openings of the plurality of second spray holes are respectively oriented toward the motor stator and / or the bearing gear device; The motor stator and the bearing gear device are completely covered and sprayed through the first spray hole and the second spray hole.

2. The cooling pipe assembly according to claim 1, characterized in that: The main pipe body is arranged in a split-petal type, wherein the main pipe body includes a first half pipe body and a second half pipe body, the first branch pipe assembly is arranged on the first half pipe body and is integrally formed with the first half pipe body, and the second branch pipe assembly is arranged on the second half pipe body and is integrally formed with the second half pipe body.

3. The cooling pipe assembly according to claim 2, characterized in that: The first half tube body and the second half tube body are fixed by welding.

4. The cooling pipe assembly according to claim 3, characterized in that: A plurality of welding grooves are formed on one side of the first half tube body close to the second half tube body, and a welding boss matching the welding groove is provided on the second half tube body, and the welding boss is embedded in the welding groove.

5. The cooling pipe assembly according to claim 2, characterized in that: The first half tube body is a light-transmitting half tube body, and the second half tube body is a non-light-transmitting half tube body; Alternatively, the first half tube body is a non-light-transmitting half tube body, and the second half tube body is a light-transmitting half tube body.

6. The cooling pipe assembly according to claim 2, characterized in that: The first branch pipe assembly includes a plurality of first branch pipes arranged in parallel, the first spray hole is arranged on the first branch pipe, the second branch pipe assembly includes a plurality of first branch pipes arranged in parallel, the second spray hole is arranged on the second branch pipe, the aperture of the first spray hole is smaller than the aperture of the second spray hole, and the aperture of the second spray hole facing the motor stator is larger than the aperture of the second spray hole facing the bearing gear device.

7. The cooling pipe assembly according to claim 6, characterized in that: The second branch pipe includes a straight-through pipe and an elastic plugging cap, wherein the elastic plugging cap includes a pressing portion and a buckle portion, the pressing portion is connected to the buckle portion, a clearance groove is provided on the side of the buckle portion away from the pressing portion, the buckle portion is located on one side of the clearance groove to form a first hook, and the buckle portion is located on the other side of the clearance groove to form a second hook, a hook step is provided on the inner side wall of the straight-through pipe on the side close to the plugging cap, the first hook and the second hook are buckled on the hook step, and the first hook and the second hook are tightly attached to the inner side wall of the straight-through pipe on the side wall away from the clearance groove.

8. The cooling pipe assembly according to claim 7, characterized in that: A first plane extending outward is provided at the connection between the pressing portion and the buckle portion, a second plane matching the first plane is provided on the straight-through tube, the pressing portion fits with the second plane of the straight-through tube through the first plane, wherein the second plane covers the first plane.

9. A vehicle, characterized in that: It comprises the cooling pipe assembly according to any one of claims 1-8.

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