Hybrid power transmission shell integrated assembly

Abstract

The utility model discloses a hybrid power transmission shell integrated assembly which comprises a transmission shell, a lubricating channel set and a cooling channel set, and the lubricating channel set is used for spraying lubricating oil to the gear meshing position between a first gear chamber and a second gear chamber. The cooling channel group comprises a first cooling channel, a second cooling channel and a third cooling channel which are communicated, the first cooling channel is used for spraying cooling oil to cool the motor stator, the second cooling channel is used for cooling the differential mechanism, and the third cooling channel is used for cooling the motor rotor. The lubricating channel set and the cooling channel set are integrated in the gearbox shell, complex assemblies such as an oil collecting plate do not need to be additionally arranged, a motor rotor, a motor stator and a differential output chamber are cooled and lubricated, the cooling effect and the lubricating integrity are ensured, too large internal space of the gearbox shell cannot be occupied, and the structure is compact; and the complexity of the internal structure of the gearbox shell is reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive transmissions, and particularly relates to an integrated assembly of a hybrid transmission housing. Background Art

[0002] The hybrid transmission of an automobile is one of the core components of a hybrid vehicle, responsible for coordinating the power output of the engine and the motor to achieve efficient energy management and power transmission.

[0003] After the integration of the motor housing and the transmission housing in the existing hybrid transmission, the overall housing becomes more complex, and there is insufficient compatibility in the lubrication of gears and the cooling of the motor stator and the motor rotor. Currently, complex components such as an oil collecting plate are added to achieve lubrication and cooling, which not only occupies a large housing space but also increases the complexity of the housing and the manufacturing cost is high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrated assembly of a hybrid transmission housing to solve the problems raised in the above background art.

[0005] In view of this, the utility model provides an integrated assembly of a hybrid transmission housing, including a transmission housing. A first gear chamber, a second gear chamber, a differential, a motor stator, and a motor rotor are arranged in the transmission housing. The integrated assembly further includes a lubrication channel group and a cooling channel group. The lubrication channel group is used to spray lubricating oil at the gear meshing position between the first gear chamber and the second gear chamber. The cooling channel group includes a first cooling channel, a second cooling channel, and a third cooling channel that are connected in series. The first cooling channel is used to spray cooling oil to cool the motor stator. The second cooling channel is used to cool the differential. The third cooling channel is used to cool the motor rotor.

[0006] A further embodiment of the utility model is that the lubrication channel group includes a first transport oil pipe, a first oil passage, a gear cooling lubricating oil pipe, and a lubricating oil inlet passage. The lubricating oil inlet passage is communicated with the transmission housing. Both ends of the first transport oil pipe are respectively communicated with the first oil passage and the gear cooling lubricating oil pipe. The gear cooling lubricating oil pipe is located at the gear meshing position between the first gear chamber and the second gear chamber. A damping hole for spraying lubricating oil is opened on the gear cooling lubricating oil pipe, and the lubricating oil is sprayed towards the gear meshing position between the first gear chamber and the second gear chamber.

[0007] A further embodiment of the utility model is that an annular rib surrounding the first gear chamber and the second gear chamber is further arranged on the transmission housing.

[0008] A further embodiment of the present utility model is that the first cooling channel includes a motor cooling oil inlet channel communicating with the inside of the gearbox housing. The motor cooling oil inlet channel is further communicated with a second oil channel, and the second oil channel is further communicated with a motor stator cooling oil pipe. The motor stator cooling oil pipe is arranged outside the motor stator for spraying cooling oil on the outer wall of the motor stator.

[0009] A further embodiment of the present utility model is that a motor bearing chamber is further provided on the gearbox housing. A bearing is arranged in the motor bearing chamber, and part of the cooling oil during spraying through the motor stator cooling oil pipe enters the motor bearing chamber to lubricate the bearing.

[0010] A further embodiment of the present utility model is that a differential output chamber is further provided on the gearbox housing. The second cooling channel includes a differential cooling lubricating oil pipe communicating with the second oil channel. The differential cooling lubricating oil pipe is communicated with a third oil channel, and a bowl plug is press-fitted at the end of the third oil channel. A damping hole for spraying cooling oil on the differential output chamber is opened on the bowl plug.

[0011] A further embodiment of the present utility model is that a rear cover housing is further fixed outside the gearbox housing. The third cooling channel includes a fourth oil channel and a rear cover transportation oil pipe. The rear cover transportation oil pipe communicates the fourth oil channel and the second oil channel. A motor rotor shaft cooling oil pipe is further arranged in the rear cover housing. The motor rotor shaft cooling oil pipe communicates with the fourth oil channel, and the shaft of the motor rotor is cooled through the motor rotor shaft cooling oil pipe.

[0012] The beneficial effects of the present utility model are as follows:

[0013] By designing and planning a lubricating channel group and a cooling channel group with a reasonable layout inside the gearbox housing, and integrating the lubricating channel group and the cooling channel group inside the gearbox housing, there is no need to additionally add complex components such as an oil collecting plate. Through the combined use of each pipeline, while the lubricating channel group lubricates the gears in the first gear chamber and the second gear chamber in real time, the cooling channel group cools and lubricates the motor rotor, the motor stator, and the differential output chamber respectively, ensuring the cooling effect and the integrity of lubrication, not occupying too much internal space of the gearbox housing, realizing the compactness of the structure, reducing the complexity of the internal structure of the gearbox housing, and reducing the manufacturing cost. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram when the gears in the first gear chamber and the second gear chamber of the present utility model are lubricated;

[0015] Figure 2 is a schematic structural diagram of the motor stator and differential cooling of the present utility model;

[0016] Figure 3It is a schematic structural diagram when the motor rotor shaft of the present utility model is cooled. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present application will be clearly described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0018] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means that the associated objects before and after are in an "or" relationship.

[0020] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0021] It should be noted that in this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0022] As Figure 1 , this embodiment provides a hybrid transmission housing integrated component, including a transmission housing 1, in which a first gear chamber 3, a second gear chamber 8, a differential, a motor stator and a motor rotor are provided.

[0023] A hybrid transmission housing integrated component further includes a lubrication channel group and a cooling channel group. The lubrication channel group is used to spray lubricating oil at the gear meshing position between the first gear chamber 3 and the second gear chamber 8. The cooling channel group includes a first cooling channel, a second cooling channel and a third cooling channel that are connected in communication. The first cooling channel is used to spray cooling oil for cooling the motor stator, the second cooling channel is used to cool the differential, and the third cooling channel is used to cool the motor rotor. Thus, complex components such as an oil collecting plate do not need to be added in the transmission housing 1, a reasonable layout is designed and planned in the transmission housing 1, and a large internal space of the transmission housing 1 is not occupied. While achieving the structural compactness of the transmission housing 1, the integrity of the lubrication effect and the cooling effect is ensured.

[0024] In this embodiment, the lubrication channel group includes a first transport oil pipe 2, a first oil channel 5, a gear cooling lubricating oil pipe 7, and a lubricating oil inlet channel 10. The lubricating oil inlet channel 10 communicates with the gearbox housing 1. The two ends of the first transport oil pipe 2 are respectively connected to the first oil channel 5 and the gear cooling lubricating oil pipe 7. The gear cooling lubricating oil pipe 7 is located at the gear meshing position between the first gear chamber 3 and the second gear chamber 8. The gear cooling lubricating oil pipe 7 is provided with damping holes for spraying lubricating oil. The lubricating oil is sprayed towards the gear meshing position between the first gear chamber 3 and the second gear chamber 8. The lubricating oil enters the gearbox housing 1 through the lubricating oil inlet channel 10, and is transported to the gear cooling lubricating oil pipe 7 through the first transport oil pipe 2 and the first oil channel 5. The damping holes provided on the gear cooling lubricating oil pipe 7 are existing ones, and will not be elaborated in this embodiment. The damping holes are exactly opposite to the meshing position of the gears between the first gear chamber 3 and the second gear chamber 8, achieving the effect of spraying and lubricating with lubricating oil.

[0025] Furthermore, in this embodiment, an annular rib 9 surrounding the outside of the first gear chamber 3 and the second gear chamber 8 is further provided on the gearbox housing 1. The annular rib 9 encloses the first gearbox and the second gearbox, ensuring the effect of circulating lubrication of the lubricating oil between the gears during operation.

[0026] Even further in this embodiment, refer to Figure 2 , the first cooling channel includes a motor cooling oil inlet channel 14 communicating with the inside of the gearbox housing 1. The motor cooling oil inlet channel 14 is further connected to a second oil channel 12. The second oil channel 12 is further connected to a motor stator cooling oil pipe 11. The motor stator cooling oil pipe 11 is arranged outside the motor stator for spraying and cooling the outer wall of the motor stator. The cooling oil enters the gearbox housing 1 from the motor cooling oil inlet channel 14. The second oil channel 12 and the motor cooling oil inlet channel 14 are cross-connected. The cooling oil sprays and cools the motor stator through the motor stator cooling oil pipe 11.

[0027] Furthermore, as described above, a motor bearing chamber 18 is further provided on the gearbox housing 1. A bearing is provided in the motor bearing chamber 18. Part of the cooling oil during the spraying through the motor stator cooling oil pipe 11 enters the motor bearing chamber 18 to lubricate the bearing. While cooling the motor stator as described above, a part of the cooling oil will also enter the motor bearing chamber 18 to lubricate the bearing.

[0028] In this embodiment, further, as Figure 2, a differential output chamber 17 is further provided on the transmission housing. The second cooling channel includes a differential cooling lubricating oil pipe 13 communicating with the second oil passage 12. The differential cooling lubricating oil pipe 13 is communicated with a third oil passage 15. A bowl plug 16 is press-fitted at the end of the third oil passage 15. A damping hole for spraying cooling oil on the differential output chamber 17 is provided on the bowl plug 16. The cooling oil enters the differential cooling lubricating oil pipe 13 from the second oil passage 12, then enters the third oil passage 15 and sprays the cooling oil through the damping hole on the bowl plug 16 to the outer wall of the differential output chamber 17 for cooling and temperature reduction.

[0029] In addition, in this embodiment, further, as Figure 3 , a rear cover housing 19 is further fixed outside the transmission housing 1. The third cooling channel includes a fourth oil passage 20 and a rear cover transportation oil pipe 4. The rear cover transportation oil pipe 4 communicates the fourth oil passage 20 and the second oil passage 12. An electric motor rotor shaft cooling oil pipe 6 is further provided in the rear cover housing 19. The electric motor rotor shaft cooling oil pipe 6 communicates with the fourth oil passage 20. The shaft of the electric motor rotor is cooled through the electric motor rotor shaft cooling oil pipe 6. The cooling oil enters the fourth oil passage 20 from the second oil passage 12 through the rear cover transportation oil pipe 4, and sprays the cooling oil from the damping hole on the electric motor rotor shaft cooling oil pipe 6 to cool the shaft of the electric motor rotor. The cooling channel group cools and lubricates the electric motor rotor, the electric motor stator and the differential output chamber 17 respectively, ensures the cooling effect and the integrity of lubrication, reasonably plans and arranges the interior of the transmission housing 1, does not occupy too much internal space of the transmission housing 1, realizes the compactness of the structure, also reduces the complexity of the internal structure of the transmission housing 1, and reduces the manufacturing cost.

[0030] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A hybrid transmission housing integrated component, comprising a transmission housing, wherein a first gear chamber, a second gear chamber, a differential, a motor stator and a motor rotor are arranged in the transmission housing, and is characterized in that, It further includes a lubrication channel group and a cooling channel group. The lubrication channel group is used to spray lubricating oil at the gear meshing position between the first gear chamber and the second gear chamber. The cooling channel group includes a first cooling channel, a second cooling channel, and a third cooling channel that are connected and communicated. The first cooling channel is used to spray cooling oil for cooling the motor stator. The second cooling channel is used to cool the differential. The third cooling channel is used to cool the motor rotor.

2. The integrated assembly of a hybrid transmission housing according to claim 1, characterized in that, The lubrication channel group includes a first transportation oil pipe, a first oil passage, a gear cooling lubricating oil pipe, and a lubricating oil inlet passage. The lubricating oil inlet passage communicates with the gearbox housing. Both ends of the first transportation oil pipe are respectively connected to the first oil passage and the gear cooling lubricating oil pipe. The gear cooling lubricating oil pipe is located at the gear meshing position between the first gear chamber and the second gear chamber. A damping hole for spraying lubricating oil is provided on the gear cooling lubricating oil pipe, and the lubricating oil is sprayed towards the gear meshing position between the first gear chamber and the second gear chamber.

3. The integrated assembly of a hybrid transmission housing according to claim 2, wherein, An annular rib surrounding the first gear chamber and the second gear chamber is further provided on the gearbox housing.

4. The integrated assembly of a hybrid transmission housing according to claim 2, wherein, The first cooling channel includes a motor cooling oil inlet passage communicating with the inside of the gearbox housing. The motor cooling oil inlet passage is further connected to a second oil passage. A motor stator cooling oil pipe is also connected to the second oil passage. The motor stator cooling oil pipe is arranged outside the motor stator for spraying oil to cool the outer wall of the motor stator.

5. The integrated assembly of a hybrid transmission housing according to claim 4, wherein A motor bearing chamber is further provided on the gearbox housing. A bearing is provided in the motor bearing chamber. Part of the cooling oil during spraying through the motor stator cooling oil pipe enters the motor bearing chamber to lubricate the bearing.

6. The integrated assembly of a hybrid transmission housing according to claim 5, wherein, A differential output chamber is further provided on the gearbox housing. The second cooling channel includes a differential cooling lubricating oil pipe connected to the second oil passage. The differential cooling lubricating oil pipe is connected to a third oil passage. A bowl plug is press-fitted at the end of the third oil passage. A damping hole for spraying cooling oil into the differential output chamber is provided on the bowl plug.

7. A hybrid transmission housing integrated component according to claim 6, characterized in that, A rear cover housing is further fixed outside the gearbox housing. The third cooling channel includes a fourth oil passage and a rear cover transportation oil pipe. The rear cover transportation oil pipe connects the fourth oil passage and the second oil passage. A motor rotor shaft cooling oil pipe is further provided in the rear cover housing. The motor rotor shaft cooling oil pipe is connected to the fourth oil passage, and the shaft of the motor rotor is cooled through the motor rotor shaft cooling oil pipe.

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