CN217396222U - Double-motor direct drive system and vehicle - Google Patents
Double-motor direct drive system and vehicle Download PDFInfo
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- CN217396222U CN217396222U CN202220484499.8U CN202220484499U CN217396222U CN 217396222 U CN217396222 U CN 217396222U CN 202220484499 U CN202220484499 U CN 202220484499U CN 217396222 U CN217396222 U CN 217396222U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/72—Electric energy management in electromobility
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Abstract
A double-motor direct drive system and a vehicle are provided. The double-motor direct drive system comprises two motors and two planetary reduction mechanisms, wherein the two motors are in one-to-one corresponding transmission connection with the two planetary reduction mechanisms; each planetary reduction mechanism includes: the sun wheel is provided with an input end, and the input end is in transmission connection with the motor; the first planet wheel is meshed with the sun wheel; the second planet wheel is fixedly connected with the first planet wheel; the planet carrier is fixedly arranged and is in transmission connection with the first planet wheel and the second planet wheel; and the gear ring is meshed with the second planet gear and is provided with an output part, and the output part is in transmission connection with the wheel. The double-motor direct-drive system has small occupied space and light weight, and can realize the functions of differential, differential lock, vector control and the like although a differential mechanism and a vector control mechanism are not arranged; in addition, a single motor drives a single wheel, the performance requirement on the single motor is reduced, and the purpose of high-power output can be achieved through two motors with lower power.
Description
Technical Field
The present disclosure relates to vehicle technology, and more particularly, to a dual-motor direct drive system and a vehicle.
Background
At present, a single-motor scheme (i.e., the pure electric vehicle comprises a single-motor front drive axle or a single-motor rear drive axle) or a front-rear double-motor scheme (i.e., the pure electric vehicle comprises a single-motor front drive axle and a single-motor rear drive axle) is mostly adopted by the pure electric vehicle. In the two schemes, the single motor is in transmission connection with the two wheels, so that the performance requirement on the single motor is higher; in addition, in order to realize differential speed, differential lock and vector control, the motor needs to be provided with a differential mechanism (the differential mechanism comprises a differential mechanism and the differential lock) and a vector control mechanism and the like, so that the occupied space is large and the weight is heavy.
SUMMERY OF THE UTILITY MODEL
The application provides a two motor direct drive systems, its occupation space is little, and weight is little, and is low to the performance requirement of single motor, still possesses functions such as differential, differential lock and vector control.
The present application further provides a vehicle.
The embodiment of the utility model provides a double-motor direct drive system, including two motors and two planetary reduction gears, two motors and two planetary reduction gears one-to-one transmission connection; each of the planetary reduction mechanisms includes: the sun gear is provided with an input end, and the input end is in transmission connection with the motor; a first planet gear meshed with the sun gear; the second planet wheel is arranged corresponding to the first planet wheel and is fixedly connected with the first planet wheel; the planet carrier is fixedly arranged and is in transmission connection with the first planet wheel and the second planet wheel; and the gear ring is meshed with the second planet gear, and is provided with an output part which is used for being in transmission connection with a wheel.
In an exemplary embodiment, the two motors and the two input ends are located on two sides of the two sun wheels, the two sets of second planet wheels are located between the two sun wheels, the gear ring is provided with a bottom wall, the two bottom walls are located between the two sets of second planet wheels, the output portion is located on one side of the bottom wall facing the sun wheels, and the output portion sequentially penetrates through the sun wheels, the input ends and the motors to be in transmission connection with the wheels.
In an exemplary embodiment, the output part is a rotating shaft, the input end is a rotating sleeve, and the motor is an annular motor.
In an exemplary embodiment, the two motors and the two input ends are located between the two sun gears, the two sets of second planet gears are located on two sides of the two sun gears, the ring gear is provided with a bottom wall, the two bottom walls are located on two sides of the two sets of second planet gears, and the output portion is located on one side of the bottom wall, which faces away from the sun gears.
In an exemplary embodiment, each of the planetary reduction mechanisms further includes: the gear reduction mechanism is provided with an input part and an output end, the gear reduction mechanism is located on one side, back to the sun gear, of the bottom wall, the output part is in transmission connection with the input part, and the output end is used for being in transmission connection with the wheels.
In an exemplary embodiment, the gear reduction mechanism includes: the input part is arranged on the driving wheel; and the driven wheel is meshed with the driving wheel, and the output end is arranged on the driven wheel.
In an exemplary embodiment, the dual-motor direct drive system further comprises: and the two wheels are positioned on two sides of the two planetary speed reducing mechanisms.
In an exemplary embodiment, two motors are symmetrically arranged, and two wheels are symmetrically arranged.
In an exemplary embodiment, the ring gear is in external engagement with the second planet gears.
In an exemplary embodiment, the ring gear is in internal engagement with the second planet gears.
The embodiment of the utility model provides a vehicle, including above-mentioned arbitrary embodiment the two motor direct drive systems.
In an exemplary embodiment, the vehicle is an electric vehicle.
Compared with the prior art, the embodiment of the utility model provides a double-motor direct drive system, the planet carrier is because of being fixed and unable rotation, and the motor operation drives the sun gear through the input and rotates, and the sun gear drives the ring gear through first planet wheel and second planet wheel and rotates, and the ring gear drives the wheel through the output and rotates, and this double-motor direct drive system, its occupation space is little, weight is little, though not being equipped with differential mechanism and vector control mechanism, still can realize functions such as differential, differential lock and vector control; in addition, a single motor drives a single wheel, the performance requirement on the single motor is reduced, and the purpose of high-power output can be achieved through two motors with lower power.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present application. Other advantages of the present application can be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
Fig. 1 is a schematic structural view of a dual-motor direct drive system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a dual-motor direct drive system according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a dual-motor direct drive system according to another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
the motor comprises a 100 motor, a 210 sun gear, a 211 input end, a 220 first planetary gear, a 230 second planetary gear, a 240 planet carrier, a 250 ring gear, a 251 output part, a 252 bottom wall, 260 duplex planetary gears, a 410 driving gear, a 411 input part, a 420 driven gear and a 421 output end.
Detailed Description
The present embodiments are described in detail below with reference to the accompanying drawings, which are included to provide a further understanding of the invention and are not intended to limit the invention to the specific embodiments shown. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the utility model provides a double-motor direct drive system, as shown in fig. 1 to fig. 3, comprises two motors 100 and two planetary reduction mechanisms, wherein the two motors 100 and the two planetary reduction mechanisms are in one-to-one transmission connection; each planetary reduction mechanism includes: the sun gear 210 is provided with an input end 211, and the input end 211 is in transmission connection with the motor 100; a first planetary gear 220 engaged with the sun gear 210; a second planet wheel 230, which is arranged corresponding to the first planet wheel 220 and is fixedly connected with the first planet wheel; a fixed planet carrier 240 (if the planet carrier 240 is fixed to a stationary member such as a housing, the planet carrier 240 cannot rotate because of being fixed), and is in transmission connection with the first planet gear 220 and the second planet gear 230; and a gear ring 250, which is meshed with the second planet gears 230, the gear ring 250 is provided with an output part 251, and the output part 251 is used for being in transmission connection with wheels.
According to the double-motor direct-drive system, the planet carrier 240 cannot rotate because of being fixed, the motor 100 runs to drive the sun gear 210 to rotate through the input end 211, the sun gear 210 drives the gear ring 250 to rotate through the first planet gear 220 and the second planet gear 230, and the gear ring 250 drives the wheels to rotate through the output part 251; in addition, a single motor 100 drives a single wheel, the performance requirement for the single motor 100 is reduced, and the purpose of high power output can be achieved by two motors 100 with lower power.
The output power of the two output parts 251 is changed by independently controlling the two motors 100, so that functions such as differential speed, differential lock and vector control are realized, and the control is more accurate.
In an example, as shown in fig. 1 to 3, each group of the first planet gears 220 includes a plurality of the first planet gears 220, each group of the second planet gears 230 also includes a plurality of the second planet gears 230, and the plurality of first planet gears 220 and the plurality of second planet gears 230 are connected to the double planet gears 260 in an integrated structure in a one-to-one correspondence manner.
In an exemplary embodiment, as shown in fig. 1, the two electric machines 100 and the two input ends 211 are located on both sides of the two sun gears 210, the two sets of second planet gears 230 are located between the two sun gears 210, the ring gear 250 is provided with a bottom wall 252, the two bottom walls 252 are located between the two sets of second planet gears 230, and the output 251 is located on the side of the bottom wall 252 facing the sun gears 210. For each planetary speed reducing mechanism, the output part 251 passes through the sun gear 210, the input end 211 and the motor 100 in sequence to be in transmission connection with the wheel, so that the output part 251 drives the wheel to rotate. Namely: the motor 100 operates to rotate the sun gear 210 through the input end 211, the sun gear 210 drives the gear ring 250 to rotate through the first planetary gear 220 and the second planetary gear 230, and the gear ring 250 drives the wheels to rotate through the output part 251. The planetary speed reducing mechanism is simple and compact in structure, small in occupied space and light in weight.
In one example, as shown in fig. 1, the output portion 251 is a rotating shaft that is mounted in a central axial hole of the bottom wall 252 of the gear ring 250. The input end 211 is a rotating sleeve (i.e., a hollow shaft) installed in the central shaft hole of the sun gear 210. Motor 100 is an annular motor that is mounted on a rotating sleeve.
In another exemplary embodiment, as shown in fig. 2 and 3, the two motors 100 and the two input ends 211 are located between the two sun gears 210, the two sets of second planetary gears 230 are located on two sides of the two sun gears 210, the ring gear 250 is provided with a bottom wall 252, the two bottom walls 252 are located on two sides of the two sets of second planetary gears 230, the output portion 251 is located on one side of the bottom wall 252, which faces away from the sun gears 210, and the wheels are in transmission connection with the output portion 251, so that the output portion 251 drives the wheels to rotate. Namely: the motor 100 operates to drive the sun gear 210 to rotate through the input end 211, the sun gear 210 drives the gear ring 250 to rotate through the first planetary gear 220 and the second planetary gear 230, and the gear ring 250 drives the wheels to rotate through the output part 251. The planetary speed reducing mechanism has the advantages of simple and compact structure, small occupied space and light weight.
In one example, as shown in fig. 3, each planetary reduction mechanism further includes: and the gear speed reducing mechanism is provided with an input part 411 and an output end 421, the gear speed reducing mechanism is positioned on one side of the bottom wall 252, which is back to the sun gear 210, the output part 251 is in transmission connection with the input part 411, and the output end 421 is used for being in transmission connection with wheels. This scheme carries out the second grade through gear reduction structure and slows down, and planetary reduction mechanism's speed reduction effect is better.
In one example, as shown in fig. 3, the gear reduction mechanism includes: the driving wheel 410, the input part 411 is arranged on the driving wheel 410; and a driven wheel 420 engaged with the driving wheel 410, and an output end 421 provided on the driven wheel 420. The gear speed reducing structure has the advantages of mature process, stable performance, good use effect and low manufacturing cost.
In an exemplary embodiment, the dual motor direct drive system further includes: two wheels (not shown) are located on both sides of the two planetary reduction mechanisms. Wherein, two motors 100 are symmetrically arranged, and two wheels are symmetrically arranged, which is more beneficial to the layout on the vehicle.
The gear ring 250 may be an outer gear ring, and the gear ring 250 is externally engaged with the second planet gear 230; alternatively, as shown in fig. 1 to 3, the gear ring 250 may be an inner gear ring, and the gear ring 250 is engaged with the second planetary gear 230; the above can realize the purpose of this application, and its purpose does not break away from the design thought of the utility model, and it is no longer repeated here, all should belong to the scope of protection of this application.
The embodiment of the utility model provides a vehicle (not shown in the figure), including two motor direct drive systems of above-mentioned arbitrary embodiment.
The vehicle has all the advantages of the dual-motor direct drive system provided by any one of the above embodiments, and details are not repeated herein.
In one example, the vehicle is an electric vehicle, the electric vehicle is a pure electric vehicle, and the electric vehicle is provided with one set or two sets of double-motor direct-drive systems.
To sum up, the embodiment of the present invention provides a dual-motor direct drive system, in which the planet carrier is fixed and can not rotate, the motor operates to drive the sun gear to rotate through the input end, the sun gear drives the gear ring to rotate through the first planet gear and the second planet gear, the gear ring drives the wheels to rotate through the output part, and the dual-motor direct drive system has small space occupation and small weight, and can realize functions of differential speed, differential lock, vector control, etc., although the dual-motor direct drive system is not provided with a differential mechanism and a vector control mechanism; in addition, a single motor drives a single wheel, the performance requirement on the single motor is reduced, and the purpose of high-power output can be achieved through two motors with lower power.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure "and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and thus, is not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may refer to a direct connection, an indirect connection through intervening media, and a connection between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A double-motor direct drive system is characterized by comprising two motors and two planetary reduction mechanisms, wherein the two motors and the two planetary reduction mechanisms are in one-to-one corresponding transmission connection; each of the planetary reduction mechanisms includes:
the sun gear is provided with an input end, and the input end is in transmission connection with the motor;
a first planet gear meshed with the sun gear;
the second planet wheel is arranged corresponding to the first planet wheel and is fixedly connected with the first planet wheel;
the planet carrier is fixedly arranged and is in transmission connection with the first planet wheel and the second planet wheel; and
the gear ring is meshed with the second planet gear, and is provided with an output part which is used for being in transmission connection with a wheel.
2. The dual-motor direct drive system as recited in claim 1, wherein the two motors and the two input ends are located on two sides of the two sun gears, the two sets of second planetary gears are located between the two sun gears, the ring gear is provided with a bottom wall, the two bottom walls are located between the two sets of second planetary gears, the output portion is located on one side of the bottom wall facing the sun gears, and the output portion sequentially penetrates through the sun gears, the input ends and the motors to be in transmission connection with the wheels.
3. The dual-motor direct drive system as recited in claim 2, wherein the output portion is a rotating shaft, the input end is a rotating sleeve, and the motor is an annular motor.
4. The dual-motor direct drive system as recited in claim 1, wherein two of the motors and two of the input ends are located between two of the sun gears, two sets of the second planetary gears are located on both sides of the two sun gears, the ring gear is provided with a bottom wall, the two bottom walls are located on both sides of the two sets of the second planetary gears, and the output portion is located on a side of the bottom wall facing away from the sun gears.
5. The dual motor direct drive system of claim 4, wherein each of the planetary reduction mechanisms further comprises:
the gear reduction mechanism is provided with an input part and an output end, the gear reduction mechanism is located on one side, back to the sun gear, of the bottom wall, the output part is in transmission connection with the input part, and the output end is used for being in transmission connection with the wheels.
6. The dual motor direct drive system of claim 5, wherein the gear reduction mechanism comprises:
the input part is arranged on the driving wheel; and
the driven wheel is meshed with the driving wheel, and the output end of the driven wheel is arranged on the driven wheel.
7. The dual-motor direct drive system as recited in any one of claims 1 to 6, further comprising:
and the two wheels are positioned on two sides of the two planetary speed reducing mechanisms.
8. The dual-motor direct drive system as recited in claim 7, wherein two motors are symmetrically arranged and two wheels are symmetrically arranged.
9. The dual motor direct drive system according to any one of claims 1 to 6,
the gear ring is externally meshed with the second planet gear; or
The gear ring is internally meshed with the second planet gear.
10. A vehicle characterized by comprising a dual motor direct drive system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220484499.8U CN217396222U (en) | 2022-03-07 | 2022-03-07 | Double-motor direct drive system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220484499.8U CN217396222U (en) | 2022-03-07 | 2022-03-07 | Double-motor direct drive system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217396222U true CN217396222U (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220484499.8U Active CN217396222U (en) | 2022-03-07 | 2022-03-07 | Double-motor direct drive system and vehicle |
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| CN (1) | CN217396222U (en) |
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- 2022-03-07 CN CN202220484499.8U patent/CN217396222U/en active Active
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