阅读说明：本技术 混合动力汽车变速器油路系统及汽车 (Hybrid vehicle transmission oil circuit system and vehicle ) 是由 邓小梅 曾维平 郭厚保 冯英连 毛祖棋 刘石生 田均 谭海洋 金辉辉 钱学成 傅 于 2021-01-28 设计创作，主要内容包括：本发明提供一种混合动力汽车变速器油路系统及汽车,该系统包括离合器执行油路总成,所述离合器执行油路总成包括离合器执行电机、离合器执行泵、第一吸滤器、离合器支承座、第一油管、第二油管、第三油管、第四油管；通过所述离合器执行电机带动所述离合器执行泵工作,压力油经过所述第一吸滤器的粗过滤后,依次经过所述第一油管、所述第二油管、所述第三油管,再进入所述离合器执行泵中,然后在所述离合器执行泵的作用下,压力油经过所述第四油管流出,并被输送到所述离合器支承座中,最后进入离合器执行压力腔体中。本发明能够解决现有技术压力油路结构较为复杂的问题。(The invention provides a hybrid electric vehicle transmission oil circuit system and a vehicle, wherein the system comprises a clutch execution oil circuit assembly, and the clutch execution oil circuit assembly comprises a clutch execution motor, a clutch execution pump, a first suction filter, a clutch supporting seat, a first oil pipe, a second oil pipe, a third oil pipe and a fourth oil pipe; the clutch execution motor drives the clutch execution pump to work, pressure oil passes through the first oil pipe, the second oil pipe and the third oil pipe in sequence after being subjected to coarse filtration by the first suction filter, then enters the clutch execution pump, flows out through the fourth oil pipe under the action of the clutch execution pump, is conveyed to the clutch support seat, and finally enters the clutch execution pressure cavity. The invention can solve the problem that the pressure oil circuit in the prior art is relatively complex in structure.)

1. The oil circuit system of the transmission of the hybrid electric vehicle is characterized by comprising a clutch execution oil circuit assembly, wherein the clutch execution oil circuit assembly comprises a clutch execution motor, a clutch execution pump, a first suction filter, a clutch supporting seat, a first oil pipe, a second oil pipe, a third oil pipe and a fourth oil pipe;

the clutch execution pump is installed below the clutch execution motor, one end of the first oil pipe is inserted into the first suction filter, the other end of the first oil pipe is connected with one end of the second oil pipe, the other end of the second oil pipe is connected with one end of the third oil pipe, the other end of the third oil pipe is inserted into the clutch execution pump, one end of the fourth oil pipe is inserted into the clutch execution pump, and the other end of the fourth oil pipe is inserted into the clutch support seat;

the clutch execution motor drives the clutch execution pump to work, pressure oil passes through the first oil pipe, the second oil pipe and the third oil pipe in sequence after being subjected to coarse filtration by the first suction filter, then enters the clutch execution pump, flows out through the fourth oil pipe under the action of the clutch execution pump, is conveyed to the clutch support seat, and finally enters the clutch execution pressure cavity.

2. The hybrid vehicle transmission oil way system according to claim 1, further comprising a clutch cooling oil way assembly, wherein the clutch cooling oil way assembly comprises an electronic cooling integrated pump, a second suction filter, a connecting pipe, a fifth oil pipe, a sixth oil pipe, and the clutch support base;

one end of the connecting pipe is inserted into the electronic cooling integrated pump, the other end of the connecting pipe is connected with one end of a fifth oil pipe, the other end of the fifth oil pipe is connected with one end of a sixth oil pipe, and the other end of the sixth oil pipe is inserted into the clutch support seat;

under the action of the electronic cooling integrated pump, cooling oil is subjected to coarse filtration by the second suction filter and then is sucked into the electronic cooling integrated pump, then flows through the connecting pipe and the fifth oil pipe in sequence, and after passing through the fifth oil pipe, part of the cooling oil flows into the clutch support base through the sixth oil pipe and finally enters the clutch cooling cavity.

3. The hybrid vehicle transmission oil circuit system of claim 2, wherein the clutch cooling oil circuit assembly further includes a flow restriction valve disposed on the sixth oil pipe.

4. The hybrid vehicle transmission oil way system according to claim 2, further comprising a motor cooling oil way assembly, wherein the motor cooling oil way assembly comprises a seventh oil pipe, an eighth oil pipe, a ninth oil pipe, a tenth oil pipe, an eleventh oil pipe, a twelfth oil pipe, a fine filter, a first cooling oil pipe, a second cooling oil pipe, a heat exchanger, a first motor cooling spray pipe assembly, and a second motor cooling spray pipe assembly;

the other end of the fifth oil pipe is further connected with the seventh oil pipe, the eighth oil pipe, the fine filter, the ninth oil pipe, the first cooling oil pipe, the heat exchanger, the second cooling oil pipe and the tenth oil pipe are sequentially connected, the tenth oil pipe is respectively connected with the first motor cooling spray pipe assembly and the eleventh oil pipe, the twelfth oil pipe and the second motor cooling spray pipe assembly are sequentially connected, and the eleventh oil pipe is located on the outer side of the transmission shell;

after passing through the fifth oil pipe, the other part of cooling oil enters the fine filter for fine filtration after passing through the seventh oil pipe and the eighth oil pipe, then enters the heat exchanger for heat exchange cooling through the ninth oil pipe and the first cooling oil pipe, then enters the tenth oil pipe through the second cooling oil pipe, after passing through the tenth oil pipe, the one part of cooling oil enters the first motor cooling spray pipe assembly, and the other part of cooling oil enters the second motor cooling spray pipe assembly after passing through the eleventh oil pipe and the twelfth oil pipe.

5. The hybrid vehicle transmission oil circuit system according to claim 4, wherein the first motor cooling spray pipe assembly is provided with a plurality of first pipelines with different diameters, and the first pipelines are provided with a plurality of first oil injection holes with different angles and different diameters.

6. The hybrid vehicle transmission oil circuit system according to claim 4, wherein a plurality of second pipelines with different diameters are arranged on the second motor cooling spray pipe assembly, and a plurality of second oil injection holes with different angles and different diameters are arranged on the second pipelines.

7. The hybrid vehicle transmission oil path system according to claim 4, further comprising a lubrication oil path assembly, wherein the lubrication oil path assembly comprises an oil guide pipe and a thirteenth oil pipe, the oil guide pipe is connected to the first motor cooling shower pipe assembly and the thirteenth oil pipe, the thirteenth oil pipe is provided with a first motor idler shaft bearing hole, a first motor input shaft bearing hole and a first motor output shaft bearing hole, the first motor idler shaft bearing hole is provided with a first oil hole, the first motor input shaft bearing hole is provided with a second oil hole, the first motor output shaft bearing hole is provided with a third oil hole, and the first oil hole, the second oil hole and the third oil hole are communicated with the thirteenth oil pipe.

8. The hybrid vehicle transmission oil path system according to claim 7, wherein the lubricating oil path assembly further includes a fourteenth oil path, the fourteenth oil path is connected to the second motor cooling shower assembly, the fourteenth oil path is provided with a second motor bearing hole, the second motor bearing hole is provided with a fourth oil hole, a first oil groove and a second oil groove, the fourth oil hole is communicated with the fourteenth oil path, the fourth oil hole is located between the first oil groove and the second oil groove, oil in the first oil groove is used for lubricating a second motor bearing, and oil in the second oil groove is used for lubricating a roller of the second motor bearing.

9. An automobile characterized by comprising the hybrid automobile transmission oil circuit system according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of automobiles, in particular to an oil way system of a transmission of a hybrid electric vehicle and the automobile.

Background

With the two problems of energy shortage and environmental deterioration, hybrid power systems (hybrid systems for short) are the main trend of automobile power systems. The basic principle of the hybrid system is that the residual energy of the engine under the low-load working condition is stored in a battery and released by a motor when a vehicle runs, so that the engine runs under the high-efficiency working condition as much as possible, and the aims of saving energy, reducing emission and reducing oil consumption are fulfilled.

The performance of the transmission, which is a core component of an automobile, often determines the quality of the entire automobile. For an automobile with a hybrid system, parts such as a clutch, a multi-gear, a shifting fork, a shaft, a bearing, a clutch, a motor and the like need to be arranged in a limited space of a hybrid transmission, and pressure oil needs to be used for the operation of a clutch execution mechanism, however, in the traditional transmission, a pressure oil path and lubricating oil in the transmission need independent oil path structures, so that the whole structure is complex, the occupied space is large, and the hybrid transmission cannot be well applied to the hybrid system.

Disclosure of Invention

Therefore, the invention aims to provide an oil circuit system of a transmission of a hybrid electric vehicle, which aims to solve the problems of complex structure and large occupied space of a pressure oil circuit in the prior art.

A hybrid electric vehicle transmission oil circuit system comprises a clutch execution oil circuit assembly, wherein the clutch execution oil circuit assembly comprises a clutch execution motor, a clutch execution pump, a first suction filter, a clutch supporting seat, a first oil pipe, a second oil pipe, a third oil pipe and a fourth oil pipe;

the clutch execution pump is installed below the clutch execution motor, one end of the first oil pipe is inserted into the first suction filter, the other end of the first oil pipe is connected with one end of the second oil pipe, the other end of the second oil pipe is connected with one end of the third oil pipe, the other end of the third oil pipe is inserted into the clutch execution pump, one end of the fourth oil pipe is inserted into the clutch execution pump, and the other end of the fourth oil pipe is inserted into the clutch support seat;

the clutch execution motor drives the clutch execution pump to work, pressure oil passes through the first oil pipe, the second oil pipe and the third oil pipe in sequence after being subjected to coarse filtration by the first suction filter, then enters the clutch execution pump, flows out through the fourth oil pipe under the action of the clutch execution pump, is conveyed to the clutch support seat, and finally enters the clutch execution pressure cavity.

According to the oil circuit system of the hybrid electric vehicle transmission, the execution pressure oil circuit of the clutch drives the clutch execution pump to work through the clutch execution motor, pressure oil flows out of the fourth oil pipe after being coarsely filtered by the first suction filter and is conveyed to the clutch supporting seat and finally enters the clutch execution pressure cavity, the pressure oil and lubricating oil in the transmission can be jointly recycled in the clutch cavity, the oil circuit structure is simplified, the space is saved, the oil circuit system can be better applied to a hybrid system, and the cost is reduced.

In addition, according to the oil circuit system of the transmission of the hybrid electric vehicle, the following additional technical characteristics can be provided:

furthermore, the oil circuit system of the transmission of the hybrid electric vehicle further comprises a clutch cooling oil circuit assembly, wherein the clutch cooling oil circuit assembly comprises an electronic cooling integrated pump, a second suction filter, a connecting pipe, a fifth oil pipe, a sixth oil pipe and the clutch supporting seat;

one end of the connecting pipe is inserted into the electronic cooling integrated pump, the other end of the connecting pipe is connected with one end of a fifth oil pipe, the other end of the fifth oil pipe is connected with one end of a sixth oil pipe, and the other end of the sixth oil pipe is inserted into the clutch support seat;

under the action of the electronic cooling integrated pump, cooling oil is subjected to coarse filtration by the second suction filter and then is sucked into the electronic cooling integrated pump, then flows through the connecting pipe and the fifth oil pipe in sequence, and after passing through the fifth oil pipe, part of the cooling oil flows into the clutch support base through the sixth oil pipe and finally enters the clutch cooling cavity.

Further, the clutch cooling oil path assembly further comprises a flow limiting valve, and the flow limiting valve is arranged on the sixth oil pipe.

Further, the hybrid electric vehicle transmission oil way system further comprises a motor cooling oil way assembly, and the motor cooling oil way assembly comprises a seventh oil pipe, an eighth oil pipe, a ninth oil pipe, a tenth oil pipe, an eleventh oil pipe, a twelfth oil pipe, a fine filter, a first cooling oil pipe, a second cooling oil pipe, a heat exchanger, a first motor cooling spray pipe assembly and a second motor cooling spray pipe assembly;

the other end of the fifth oil pipe is further connected with the seventh oil pipe, the eighth oil pipe, the fine filter, the ninth oil pipe, the first cooling oil pipe, the heat exchanger, the second cooling oil pipe and the tenth oil pipe are sequentially connected, the tenth oil pipe is respectively connected with the first motor cooling spray pipe assembly and the eleventh oil pipe, the twelfth oil pipe and the second motor cooling spray pipe assembly are sequentially connected, and the eleventh oil pipe is located on the outer side of the transmission shell;

after passing through the fifth oil pipe, the other part of cooling oil enters the fine filter for fine filtration after passing through the seventh oil pipe and the eighth oil pipe, then enters the heat exchanger for heat exchange cooling through the ninth oil pipe and the first cooling oil pipe, then enters the tenth oil pipe through the second cooling oil pipe, after passing through the tenth oil pipe, the one part of cooling oil enters the first motor cooling spray pipe assembly, and the other part of cooling oil enters the second motor cooling spray pipe assembly after passing through the eleventh oil pipe and the twelfth oil pipe.

Furthermore, a plurality of first pipelines with different diameters are arranged on the first motor cooling spray pipe assembly, and a plurality of first oil injection holes with different angles and different diameters are arranged on the first pipelines.

Furthermore, a plurality of second pipelines with different diameters are arranged on the second motor cooling spray pipe assembly, and a plurality of second oil injection holes with different angles and different diameters are arranged on the second pipelines.

Furthermore, the oil circuit system of the hybrid electric vehicle transmission further comprises a lubricating oil circuit assembly, wherein the lubricating oil circuit assembly comprises an oil guide pipe and a thirteenth oil pipe, the oil guide pipe is respectively connected with the first motor cooling spray pipe assembly and the thirteenth oil pipe, the thirteenth oil pipe is provided with a first motor idler shaft bearing hole, a first motor input shaft bearing hole and a first motor output shaft bearing hole, the first motor idler shaft bearing hole is provided with a first oil hole, the first motor input shaft bearing hole is provided with a second oil hole, the first motor output shaft bearing hole is provided with a third oil hole, and the first oil hole, the second oil hole and the third oil hole are respectively communicated with the thirteenth oil pipe.

Further, the lubricating oil path assembly further comprises a fourteenth oil pipe, the fourteenth oil pipe is connected with the second motor cooling spray pipe assembly, a second motor bearing hole is formed in the fourteenth oil pipe, a fourth oil hole, a first oil groove and a second oil groove are formed in the second motor bearing hole, the fourth oil hole is communicated with the fourteenth oil pipe, the fourth oil hole is located between the first oil groove and the second oil groove, oil in the first oil groove is used for lubricating a second motor bearing, and oil in the second oil groove is used for lubricating a roller of the second motor bearing.

Another object of the present invention is to provide a vehicle including the above-mentioned hybrid vehicle transmission oil circuit system.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a clutch actuation oil circuit assembly;

FIG. 2 is a schematic structural view of a clutch cooling oil circuit assembly;

FIG. 3 is a schematic diagram of a cooling oil circuit assembly of the motor;

FIG. 4 is a schematic diagram of a lubrication circuit assembly;

FIG. 5 is a schematic view of the first motor idler shaft bearing hole, first motor input shaft bearing hole, first motor output shaft bearing hole;

fig. 6 is a schematic view of a second motor bearing bore.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must be in a particular orientation, constructed or operated in a particular manner, and is not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 6, an oil path system of a transmission of a hybrid electric vehicle according to an embodiment of the present invention includes a clutch actuation oil path assembly, a clutch cooling oil path assembly, a motor cooling oil path assembly, and a lubrication oil path assembly.

The clutch execution oil path assembly comprises a first suction filter 1, a first oil pipe 2, a second oil pipe 3, a third oil pipe 4, a clutch execution motor 5, a clutch execution pump 6, a fourth oil pipe 7 and a clutch support seat 8.

The clutch actuating pump 6 is installed below the clutch actuating motor 5, one end of the first oil pipe 2 is inserted into the first suction filter 1, the other end of the first oil pipe 2 is connected with one end of the second oil pipe 3, the other end of the second oil pipe 3 is connected with one end of the third oil pipe 4, the other end of the third oil pipe 4 is inserted into the clutch actuating pump 6, one end of the fourth oil pipe 7 is inserted into the clutch actuating pump 6, and the other end of the fourth oil pipe 7 is inserted into the clutch support seat 8.

The clutch execution motor 5 drives the clutch execution pump 6 to work, pressure oil passes through the first oil pipe 2, the second oil pipe 3 and the third oil pipe 4 in sequence after being subjected to coarse filtration by the first suction filter 1 and then enters the clutch execution pump 6, then under the action of the clutch execution pump 6, the pressure oil flows out through the fourth oil pipe 7 and is conveyed to the clutch support seat 8, and finally enters a clutch execution pressure cavity, so that the execution control work of the clutch is realized.

According to the clutch execution oil path assembly, the execution pressure oil path of the clutch drives the clutch execution pump 6 to work through the clutch execution motor 5, pressure oil flows out of the fourth oil pipe 7 after being coarsely filtered by the first suction filter 1 and is conveyed to the clutch support seat 8 and finally enters the clutch execution pressure cavity, the pressure oil and lubricating oil in the transmission can be recycled in the clutch cavity, the oil path structure is simplified, the space is saved, the clutch execution pressure oil path assembly can be better applied to a hybrid system, and the cost is reduced.

The clutch cooling oil path assembly comprises an electronic cooling integrated pump 9, a second suction filter 10, a connecting pipe 11, a fifth oil pipe 12, a sixth oil pipe 13 and the clutch support seat 8.

One end of the connecting pipe 11 is inserted into the electronic cooling integrated pump 9, the other end of the connecting pipe 11 is connected with one end of the fifth oil pipe 12, the other end of the fifth oil pipe 12 is connected with one end of the sixth oil pipe 13, and the other end of the sixth oil pipe 13 is inserted into the clutch support 8.

Under the action of the electronic cooling integrated pump 9, cooling oil is subjected to coarse filtration by the second suction filter 10 and then is sucked into the electronic cooling integrated pump 9, then flows through the connecting pipe 11 and the fifth oil pipe 12 in sequence, after the cooling oil passes through the fifth oil pipe 12, a part of the cooling oil flows into the clutch support base 8 through the sixth oil pipe 13, and finally enters a clutch cooling cavity to realize clutch cooling.

Preferably, the clutch cooling oil path assembly further comprises a flow limiting valve 14, and the flow limiting valve 14 is arranged on the sixth oil pipe 13. The amount of cooling oil entering the clutch is here controlled by means of a flow restriction valve 14.

The motor cooling oil path assembly comprises a seventh oil pipe 15, an eighth oil pipe 16, a fine filter 17, a ninth oil pipe 18, a first cooling oil pipe 19, a heat exchanger 20, a second cooling oil pipe 21, a tenth oil pipe 22, a first motor cooling spray pipe assembly 23, an eleventh oil pipe 24, a twelfth oil pipe 25 and a second motor cooling spray pipe assembly 26, wherein the eleventh oil pipe 24 is positioned on the outer side of the transmission shell.

The other end of the fifth oil pipe 12 is further connected to the seventh oil pipe 15, the eighth oil pipe 16, the fine filter 17, the ninth oil pipe 18, the first cooling oil pipe 19, the heat exchanger 20, the second cooling oil pipe 21, and the tenth oil pipe 22 are sequentially connected, the tenth oil pipe 22 is respectively connected to the first motor cooling shower assembly 23 and the eleventh oil pipe 24, the twelfth oil pipe 25, and the second motor cooling shower assembly 26 are sequentially connected;

after passing through the fifth oil pipe 12, the other part of the cooling oil passes through the seventh oil pipe 15 and the eighth oil pipe 16, enters the fine filter 17 for fine filtering, then passes through the ninth oil pipe 18 and the first cooling oil pipe 19, enters the heat exchanger 20 for heat exchange cooling, then passes through the second cooling oil pipe 21, enters the tenth oil pipe 22, passes through the tenth oil pipe 22, enters the first motor cooling spray pipe assembly 23, and passes through the eleventh oil pipe 24 and the twelfth oil pipe 25, and enters the second motor cooling spray pipe assembly 26.

Specifically, a plurality of first pipelines with different diameters are arranged on the first motor cooling spray pipe assembly 23, and a plurality of first oil injection holes with different angles and different diameters are arranged on the first pipelines. The oil is sprayed out after passing through the first oil spray holes to form different covering surfaces to be dripped on the first motor stator and the coil so as to realize the active and directional cooling of the first motor stator and the coil; the first motor and the coil are guaranteed to work in a reasonable temperature range. In addition, these sprayed actively lubricating oil then enters the splash lubrication system of the housing.

A plurality of second pipelines with different diameters are arranged on the second motor cooling spray pipe assembly 26, and a plurality of second oil spray holes with different angles and different diameters are arranged on the second pipelines. The oil is sprayed out after passing through the second oil spray holes to form different covering surfaces to be dripped on the second motor stator and the coil so as to realize the active and directional cooling of the second motor stator and the coil; the second motor and the coil can work in a reasonable temperature range. In addition, these sprayed actively lubricating oil then enters the splash lubrication system of the housing.

The lubricating oil path assembly comprises an oil guide pipe 27 and a thirteenth oil pipe 28, the oil guide pipe 27 is respectively connected with the first motor cooling spray pipe assembly 23 and the thirteenth oil pipe 28, a first motor idler shaft bearing hole 29, a first motor input shaft bearing hole 30 and a first motor output shaft bearing hole 31 are arranged on the thirteenth oil pipe 28, and the first motor idler shaft bearing, the first motor input shaft bearing and the first motor output shaft bearing are respectively located in the first motor idler shaft bearing hole 29, the first motor input shaft bearing hole 30 and the first motor output shaft bearing hole 31.

The first motor idler shaft bearing hole 29 is provided with a first oil hole 29-1, the first motor input shaft bearing hole 30 is provided with a second oil hole 30-1, the first motor output shaft bearing hole 31 is provided with a third oil hole 31-1, the first oil hole 29-1, the second oil hole 30-1 and the third oil hole 31-1 are respectively communicated with the thirteenth oil pipe 28, and oil can respectively flow through the first oil hole 29-1, the second oil hole 30-1 and the third oil hole 31-1 through the thirteenth oil pipe 28 and then respectively enter the first motor idler shaft bearing hole 29, the first motor input shaft bearing hole 30 and the first motor output shaft bearing hole 31 so as to lubricate three bearings, namely the first motor idler shaft bearing, the first motor input shaft bearing and the first motor output shaft bearing.

Specifically, the first lubricating oil path is that oil enters a first motor idler shaft bearing hole 29 through a first oil hole 29-1 to lubricate a first motor idler shaft bearing; the diameter of the first oil hole 29-1 will affect the amount of oil ejected at this location to achieve oil distribution.

The second lubricating oil path is that oil enters the first motor input shaft bearing hole 30 through the second oil hole 30-1 to lubricate the first motor input shaft bearing; the diameter of the second oil hole 30-1 will affect the amount of oil ejected at this location to achieve oil distribution.

The third lubricating oil path is that oil enters the bearing hole 31 of the output shaft of the first motor through the third oil hole 31-1 so as to lubricate the bearing of the output shaft of the first motor; the diameter of the third oil hole 31-1 will affect the amount of oil ejected at this location to achieve oil distribution.

In this embodiment, the lubricating oil path assembly further includes a fourteenth oil pipe 32, the fourteenth oil pipe 32 is connected to the second motor cooling spray pipe assembly 26, a second motor bearing hole 33 is formed in the fourteenth oil pipe 32, and the second motor bearing is located in the second motor bearing hole 33.

The second motor bearing hole 33 is provided with a fourth oil hole 33-1, a first oil groove 33-2 and a second oil groove 33-3, the fourth oil hole 33-1 is communicated with the fourteenth oil pipe 32, the fourth oil hole 33-1 is located between the first oil groove 33-2 and the second oil groove 33-3, oil in the first oil groove 33-2 is used for lubricating a second motor bearing, and oil in the second oil groove 33-3 is used for lubricating a roller of the second motor bearing.

The diameter of the fourth oil hole 33-1 is designed and adjusted to control the oil outlet flow.

The oil flowing out of the fourth oil hole 33-1 enters the first oil groove 33-2 and the second oil groove 33-3, so that the liquid level gradually rises, the second motor bearing is lubricated by the oil in the first oil groove 33-2, and the roller of the second motor bearing is lubricated by the oil in the second oil groove 33-3. The distribution of the oil amount entering the second motor bearing hole is realized by controlling the shape structure parameters of the first oil groove 33-2 and the second oil groove 33-3; the structure can ensure that the lubrication of the shaft and the bearing can not be influenced under the conditions of different gradients and left and right inclinations of the whole vehicle.

According to the oil circuit system of the transmission of the hybrid electric vehicle, the following three types of oil circuits are realized through reasonably arranging parts such as an oil pipe, a suction filter, a fine filter, a spray pipe and the like: (1) cooling an oil path: the motor cooling and the clutch cooling are realized; (2) pressure oil circuit: a clutch actuation pressure oil path; (3) lubricating an oil path: the lubrication of internal parts of the transmission comprises gear shaft lubrication, bearing lubrication and the like.

In addition, the invention is provided with a two-stage filtering system, which meets different requirements of the clutch module and the motor module on oil cleanliness, wherein the cooling and control oil circuit of the clutch is only filtered by a suction filter; the cooling oil circuit of the motor is filtered by two stages of a suction filter and a fine filter, so that the failure of the motor caused by overlarge impurities in oil is avoided.

The invention adopts the externally-hung water-cooling heat exchanger to realize the active cooling and cooling of oil after the oil temperature rises after the transmission operates, and can control the flow of the heat exchanger through the heat management logic, so that the oil temperature of the transmission is controlled in a reasonable range, the premature failure of the oil is avoided, and the efficient operation of the transmission is realized. Compared with a conventional water cooling scheme (a water channel is integrated in a clutch cavity, water sealing is realized through a sealing cover, and an aluminum casting shell is prevented from oil-water mixing through infiltration), the scheme of the externally-hung water-cooling heat exchanger can reduce the sealing structure of a transmission, reduce the infiltration process of the aluminum casting shell, and save the cost to a great extent. In addition, the failure risk of clutch polishing caused by oil-water mixing is avoided, and the product quality is improved.

The invention adopts an ingenious shunting structure, lubricating oil is cooled by the water cooler and then shunted to the outer side of the transmission shell through the oil pipe (namely the eleventh oil pipe 24 is positioned at the outer side of the transmission shell), and is guided to corresponding bearing parts through the third oil pipe 28 and the fourteenth oil pipe 32 for bearing lubrication, the structure is simple, the spatial arrangement is compact, and the lubricating effect is sufficient.

The oil distribution of the invention can be realized by the designed diameters of the first pipeline and the second pipeline, the number and the diameter of the first oil injection hole and the second oil injection hole, the diameter of the tenth oil pipe 22, the diameter of the eleventh oil pipe 24 and the diameter of the twelfth oil pipe 25, and the whole system realizes different requirements of each functional block on cooling and lubrication through a simple structure.

In addition, through the matching of the thirteenth oil pipe 28 with the first oil hole 29-1, the second oil hole 30-1 and the third oil hole 31-1, lubrication of three bearings, namely the first motor idler shaft bearing hole 29, the first motor input shaft bearing hole 30 and the first motor output shaft bearing hole 31, can be realized only by injecting lubricating oil into the thirteenth oil pipe 28, so that the risks of complex oil guide structure design and strength failure of bearing oil opening grooves are effectively avoided, and the processing takt is reduced.

Another embodiment of the invention provides an automobile, which comprises the oil circuit system of the transmission of the hybrid electric vehicle.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.