CN106740050B - Hybrid module assembly and shell thereof - Google Patents
Hybrid module assembly and shell thereof Download PDFInfo
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- CN106740050B CN106740050B CN201510818936.XA CN201510818936A CN106740050B CN 106740050 B CN106740050 B CN 106740050B CN 201510818936 A CN201510818936 A CN 201510818936A CN 106740050 B CN106740050 B CN 106740050B
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- hybrid module
- shell
- groove
- bottom shell
- bottom case
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
- B60K6/405—Housings
Abstract
A hybrid module assembly and its shell, wherein the hybrid module shell includes the outer casing with middle through hole, and link to the cyclic annular drain pan of the inner wall of the said outer casing integrally; the bottom shell is at least provided with a plurality of reinforcing parts arranged along the circumferential direction on the radial inner side, and each reinforcing part comprises a groove arranged on the axial surface of the bottom shell and a convex rib part formed on the bottom wall of the groove; in two circumferentially adjacent reinforcing portions, the openings of the grooves face different surfaces of the bottom case. All the reinforcing parts are taken as a whole, the centroid of the reinforcing parts is closer to the center of the bottom shell in the thickness direction, and the sectional inertia of the reinforcing part area of the bottom shell can be increased under the condition that the material and the density, the number and the width of the convex ribs are not changed, so that the rigidity of the bottom shell is improved.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a hybrid power module assembly and a shell thereof.
Background
A hybrid module Housing (Die-casting Housing) is used in a hybrid module of a hybrid vehicle, which is disposed between an engine and a transmission, and includes a cylindrical hollow casing and an annular bottom case located inside the casing. The engine is mounted on one axial side of the hollow shell, and the transmission is mounted on the other axial side of the hollow shell; a cavity for accommodating and mounting the hybrid module is formed between the hollow shell and the bottom shell, and the hybrid module is arranged in the cavity and fixedly mounted on the bottom shell.
When the automobile runs, the resonance risk of the hybrid module shell needs to be reduced as much as possible, the better the rigidity of the shell is, the higher the natural frequency is, the smaller the resonance risk is, and otherwise, the larger the resonance risk is. In order to enhance the rigidity of the bottom case, a circular or radial rib is generally formed on one side surface of the bottom case.
Due to the limitation of the existing die-casting process, the selectable range of the width of the convex rib is very limited, and the lifting space of the rigidity of the bottom shell is limited. If the density and number of the ribs are increased, this leads to an increase in the weight of the entire housing and an increase in the material costs, and the greater the number of ribs, the greater the quality risk in the die casting.
Disclosure of Invention
The invention solves the problem of how to improve the rigidity of a hybrid module shell without increasing the weight of the hybrid module shell under the existing die-casting process level.
In order to solve the above problems, the present invention provides a hybrid module casing, which includes a casing having a central through hole, and an annular bottom casing integrally connected to an inner wall of the casing; the bottom shell is at least provided with a plurality of reinforcing parts arranged along the circumferential direction on the radial inner side, and each reinforcing part comprises a groove arranged on the axial surface of the bottom shell and a convex rib part formed on the bottom wall of the groove; in two circumferentially adjacent reinforcing portions, the openings of the grooves face different surfaces of the bottom case.
Optionally, the bead portion comprises a first bead extending in a radial direction; in one recess, the quantity of first muscle is one or more, and a plurality of first muscle is along circumference interval distribution.
Optionally, the rib portion further includes a second rib extending along the circumferential direction, and the second rib is intersected with the first rib of the groove where the second rib is located; in one groove, the number of the second ribs is one or more, and a plurality of the second ribs are distributed at intervals along the radial direction.
Optionally, the circumferential two sides of the second rib are respectively and integrally connected with the circumferential side wall of the groove.
Optionally, the groove penetrates through a radial inner side of the bottom case, and the first rib extends to the radial inner side of the bottom case.
Optionally, the groove further penetrates through the radial outer side of the bottom shell, and the first rib extends to the radial outer side of the bottom shell and is integrally connected with the inner wall of the outer shell.
Optionally, the plurality of reinforcing parts are arranged in a plurality of circular rings surrounding a central axis of the bottom case, and the circular rings are arranged at intervals in a radial direction.
Optionally, the circumferentially adjacent reinforcing portions are arranged end to end or at intervals.
Optionally, the top of the bead is flush with the corresponding surface.
The invention also provides a hybrid module assembly, which comprises a hybrid module and the hybrid module shell.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the bottom shell is provided with a plurality of reinforcing parts arranged along the circumferential direction at least on the radial inner side, and in two reinforcing parts adjacent in the circumferential direction, the openings of the grooves face different surfaces of the bottom shell. Compared with the existing bottom shell in which the convex ribs are formed on only one side surface, the bottom shell of the invention has the advantages that the opening directions of the grooves in the reinforcing parts are staggered in the circumferential direction, so that all the reinforcing parts are taken as a whole, the centroid of the reinforcing parts is closer to the center of the bottom shell in the thickness direction, and the sectional inertia of the reinforcing part area of the bottom shell can be increased under the condition that the density, the number and the width of materials and the convex ribs are not changed, so that the rigidity of the bottom shell is improved.
Drawings
FIG. 1 is a partial cross-sectional view of a hybrid module housing with a hybrid module installed in an embodiment of the present invention in the axial direction;
FIG. 2 shows a perspective view of a hybrid module housing in an embodiment of the invention from an engine side perspective;
FIG. 3 shows a perspective view of the hybrid module housing in an embodiment of the present invention from the transmission side;
fig. 4 shows a partially enlarged view of a reinforcement portion of the hybrid module case in the embodiment of the invention.
Detailed Description
As described in the background art, in the hybrid module, the width of the ribs on the bottom case and the arrangement of the space between the adjacent ribs are limited by the existing die-casting process, and thus the rigidity improvement space is limited.
The hybrid module shell is usually a die-casting aluminum alloy part, wherein the die-casting thickness is generally 3 mm-6 mm, and therefore the die-casting width of the convex rib is also basically 3-6 mm. If the width of the convex rib is too wide, the molten metal flows too fast in the die cavity of the die-casting die, so that air holes are easily generated, and the workpiece is loosened; if the width of the bead is too small, the molten metal in the cavity is so difficult to flow that it does not fill the cavity and form the workpiece.
Therefore, the invention provides a novel hybrid module shell, which mainly improves the arrangement mode of the convex ribs on the bottom shell, can improve the rigidity of the shell on the premise of not increasing the weight and the material cost of the shell, and meets the requirements of the existing die-casting process.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
An embodiment of the present invention provides a hybrid module casing, referring to fig. 1 in combination with fig. 2 and 3, wherein fig. 1 shows a partial cross section of the hybrid module casing 1 in an axial direction by using a hatched portion, and the hybrid module casing 1 includes a casing 10 having a middle through hole (not labeled in the figure) and an annular bottom case 20 integrally connected to an inner wall of the casing 10. The bottom case 20 is substantially coaxial with the through-hole of the housing 10, and the radial outside of the bottom case 20 is integrally connected with the inner wall of the housing 10.
Referring to fig. 1, the housing 10 has a first end 1a and a second end 1b along the axial direction, the first end 1a is used for connecting an engine, and the second end 1b is used for connecting a transmission. The output shaft of the engine penetrates from the inner circle of the bottom case 20. A cavity for accommodating the hybrid module 2 is formed between the bottom case 20 and the inner peripheral wall of the housing 10, and the cavity is opened toward the second end 1b, i.e., toward the transmission.
Wherein the radially inner side of the bottom case 20 has a fixing hole for mounting the hybrid module 2, and the hybrid module 2 is mounted in the fixing hole by the fixing bolt 3.
With continued reference to fig. 2 and 3 in conjunction with fig. 4, the bottom case 20 is provided with a plurality of reinforcement portions 20a arranged in the circumferential direction at least on the radially inner side, that is, the reinforcement portions 20a are arranged at least in a region of the bottom case 20 near the inner circle thereof. The reinforcement portion 20a includes a groove 21 provided on an axial surface of the bottom case 20, and a bead portion 22 formed on a bottom wall of the groove 21. Here, the axial surface of the bottom case 20 refers to a surface of the bottom case 20 on a side facing the engine or the transmission.
Only a portion of the reinforcement 20a and the groove 21 are labeled in fig. 2, 3 and 4. Since the hybrid module 2 is fixed to the area of the bottom case 20 near the inner circle, when the vehicle is running, the vibration generated by the hybrid module 2 is first transmitted to the radially inner side of the bottom case 20, where the vibration received by the bottom case 20 is the largest, and then transmitted to the housing 10 in the radially outward direction of the bottom case 20. A reinforcement portion 20a is provided radially inward of the bottom case 20 to reinforce rigidity of the portion to better avoid resonance.
Among them, in two reinforcement portions 20a adjacent in the circumferential direction, the openings of the grooves 21 face different surfaces of the bottom case 20, respectively face the engine and the transmission, that is, the grooves 21 of the reinforcement portions 20a adjacent in the circumferential direction are formed in different surfaces of the bottom case 20, respectively. As shown in fig. 2 and 3, the recess 21 shown in fig. 2 opens toward the engine, and the recess 21 shown in fig. 3 opens toward the transmission.
As shown in fig. 2, 3, the opening directions of the grooves 21 in the respective reinforcing portions 20a are staggered with each other in the circumferential direction so that the centroid of all the reinforcing portions 20a as a whole is closer to the center of the bottom case 20 in the thickness direction. In the conventional bottom case, the ribs are formed only on one side surface, and the centroid of the corresponding portion is closer to one side surface of the bottom case 20. Therefore, the present invention can increase the sectional inertia (area moment of inertia) of the bottom case 20 in the reinforcement area to improve the rigidity of the bottom case 20 without changing the material, the weight of the bottom case 20, and the density, number, and width of the ribs by changing the arrangement of the ribs in the bottom case 20.
In addition, because the opening directions of the grooves 21 in the reinforcing parts 20a are staggered, when the die is opened, the die opening torque between the convex rib parts 22 and the movable die and the static die can be balanced, the die is opened more easily, and the rejection rate is reduced; the bottom case 20 is provided with a bead part 22 on one side facing the engine and the transmission, respectively, so that noise generated on one side of the engine and the transmission can be absorbed respectively to improve the NHV performance of the automobile; meanwhile, the arrangement of the rib parts 22 on the two sides of the bottom shell 20 can increase the areas of the side, facing the engine, of the bottom shell and the side, contacting with the heat generated on the side, facing the engine, of the bottom shell, so that the heat can be better dissipated, and the stability of a hybrid power system is facilitated.
Further, with continued reference to fig. 4, the bead portion 22 includes a first bead 22a extending in the radial direction. The number of the first ribs 22a in the same groove 21 may be one or more, and the first ribs 22a are exemplarily shown in the form of one. When the first ribs 22a are plural, the plural first ribs 22a are circumferentially spaced apart. Here, the "radial direction" herein refers to a direction extending from the inner circle to the outer circle of the bottom case 20, and does not necessarily have to pass through the center of the bottom case 20.
The rib portion 22 further includes a second rib 22b extending along the circumferential direction, and the second rib 22b intersects with the first rib 22a of the groove 21. The number of the second ribs 22b in the same groove 21 may be one or more, and if there are a plurality of the second ribs 22b, the plurality of the second ribs 22b are spaced apart in the radial direction. The second ribs 22b are exemplarily shown in two forms, and the two second ribs 22b are arranged at intervals in the radial direction and intersect the first ribs 22a, respectively.
The lengths and widths of the first ribs 22a and the second ribs 22b can be set according to the rigidity requirement and the requirement of the die casting process. In combination with the requirement of the existing die-casting process, in the embodiment, the thickness of the bottom case 20 can be selected within a range of 4-6 mm, and the width of each rib can be selected within a range of 3-5 mm. When the recess 21 is formed on the surface of the bottom case 20, a distance of at least 1mm should be left between the bottom wall of the recess 21 and the other surface of the bottom case 20.
In terms of length, two circumferential sides of the second rib 22b are respectively connected with the circumferential side wall of the groove 21 integrally. That is, the second rib 22b penetrates the groove 21 in the longitudinal direction. Alternatively, in other embodiments, the second rib 22b may be spaced apart from the circumferential sidewall of the groove 21.
For the reinforcing parts 20a which are arranged in the circumferential direction and have the same opening direction of the grooves 21, the second ribs 22b in each reinforcing part 20a are in one-to-one correspondence in the circumferential direction, and the second ribs 22b which correspond to each other are located on the same circumference. As shown in fig. 2, for the reinforcing portions 20a in which the grooves 21 open toward the engine, there are two second ribs 22b in each reinforcing portion 20a, and the two second ribs 22b are located on different circumferences, respectively, so that, as viewed from the entire bottom case 20, all of the second ribs 22b located on the radially inner side of the bottom case 20 are located on the same circumference, and all of the second ribs 22b located on the radially outer side are also located on the same circumference. As shown in fig. 3, for the case where the recesses 21 open toward the reinforcing portions 20a of the transmission, three second ribs 22b are provided in substantially each of the reinforcing portions 20a, wherein if other components need to be mounted on the bottom case 20, the shape of the reinforcing portion 20a in the corresponding region can be adjusted adaptively.
Increasing the size of the reinforcement part 20a can improve the rigidity of the bottom case 20. In the present embodiment, the length of the bead in the reinforcing portion 20a is increased. Specifically, the groove 21 penetrates at least the radially inner side (i.e., the inner circle) of the bottom case 20, and the first rib 22a extends to the radially inner side of the bottom case 20 to the inner circle of the bottom case 20.
Further, the groove 21 also penetrates the radial outside (i.e., the outer circle) of the bottom case 20, and the first rib 22a extends to the radial outside of the bottom case 20 and is integrally connected with the inner wall of the housing 10.
Further, circumferentially adjacent reinforcement portions 20a may be arranged end to end or spaced apart. In this embodiment, an end-to-end connection mode is adopted to arrange more ribs on the same circumference, for example, 10 to 20 reinforcing parts 20a may be arranged on the same circumference, and each reinforcing part 20a may be provided with no more than 4 first ribs 22 a.
It should be noted that the height (dimension in the thickness direction of the bottom case) of each rib of the rib portions 22 is not higher than the corresponding surface of the bottom case 20. The top of the bead 22 in this embodiment is flush with the corresponding surface. Each rib has a draft angle of about 1.5 °.
In a modification of the present embodiment, the plurality of reinforcing portions 20a may be arranged in a plurality of circular rings, each of which surrounds a central axis of the bottom case 20, for example, may be coaxial with the bottom case 20. The plurality of rings are arranged at intervals along the radial direction. That is, a plurality of the reinforcing parts 20a are also arranged at intervals in the radial direction of the bottom case 20, and all the reinforcing parts 20a are arranged in a plurality of rings having intervals therebetween in the radial direction.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A hybrid module housing includes a housing having a central through hole, and an annular bottom case integrally connected to an inner wall of the housing;
the bottom shell is characterized in that a plurality of reinforcing parts which are circumferentially arranged are arranged on at least the radial inner side of the bottom shell, and each reinforcing part comprises a groove arranged on the axial surface of the bottom shell and a convex rib part formed on the bottom wall of the groove;
in two circumferentially adjacent reinforcing parts, the openings of the grooves face different surfaces of the bottom case; so that all the reinforcing portions as a whole have the centroid closer to the center of the bottom case in the thickness direction.
2. A hybrid module housing as set forth in claim 1 wherein said bead includes a first bead extending radially;
in one recess, the quantity of first muscle is one or more, and a plurality of first muscle is along circumference interval distribution.
3. A hybrid module housing as set forth in claim 2 wherein said rib portion further includes a second circumferentially extending rib that interdigitates with said first rib of said groove;
in one groove, the number of the second ribs is one or more, and a plurality of the second ribs are distributed at intervals along the radial direction.
4. A hybrid module housing according to claim 3, wherein the second rib is integrally connected at both circumferential sides thereof to the circumferential side walls of the groove.
5. The hybrid module housing of claim 2, wherein the groove extends through a radially inner side of the bottom shell, and the first bead extends to the radially inner side of the bottom shell.
6. The hybrid module housing of claim 5, wherein the groove further extends through a radially outer side of the bottom shell, and the first bead extends to the radially outer side of the bottom shell and is integrally connected to an inner wall of the outer shell.
7. The hybrid module housing of claim 1, wherein a plurality of the reinforcements are arranged in a plurality of rings surrounding a central axis of the bottom case, the plurality of rings being radially spaced apart.
8. A hybrid module housing according to any one of claims 1 to 7, wherein circumferentially adjacent reinforcement portions are arranged end to end or spaced apart.
9. A hybrid module housing according to any of claims 1-7, wherein the top of the bead is flush with the corresponding surface.
10. A hybrid module assembly comprising a hybrid module and a hybrid module housing according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818936.XA CN106740050B (en) | 2015-11-23 | 2015-11-23 | Hybrid module assembly and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818936.XA CN106740050B (en) | 2015-11-23 | 2015-11-23 | Hybrid module assembly and shell thereof |
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| Publication Number | Publication Date |
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| CN106740050A CN106740050A (en) | 2017-05-31 |
| CN106740050B true CN106740050B (en) | 2021-11-23 |
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| CN201510818936.XA Active CN106740050B (en) | 2015-11-23 | 2015-11-23 | Hybrid module assembly and shell thereof |
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| CN106740050A (en) | 2017-05-31 |
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