CN209870075U - Pure electric automobile power assembly suspension system - Google Patents
Pure electric automobile power assembly suspension system Download PDFInfo
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- CN209870075U CN209870075U CN201920182514.1U CN201920182514U CN209870075U CN 209870075 U CN209870075 U CN 209870075U CN 201920182514 U CN201920182514 U CN 201920182514U CN 209870075 U CN209870075 U CN 209870075U
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Abstract
The utility model discloses a pure electric vehicles power assembly suspension system, it includes left front suspension support, right front suspension support, back suspension support, front suspension crossbeam, back suspension assembly, left front suspension assembly and right front suspension assembly; one end of the left front suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the left front suspension bracket is fixed on the front suspension cross beam through the left front suspension assembly; one end of the right front suspension bracket is fixed on a driving motor assembly of the power assembly, and the other end of the right front suspension bracket is fixed on the front suspension cross beam through the right front suspension bracket assembly; one end of the rear suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the rear suspension bracket is fixed on the front auxiliary frame through the rear suspension assembly. The utility model discloses structural arrangement is reasonable, and is with low costs, and the performance is outstanding, has integrateed technology suspended structure and assembly setpoint, has the technology convenience to subtract heavy 20%.
Description
Technical Field
The utility model relates to a pure electric vehicles power assembly suspension technique, especially a power assembly suspension system.
Background
In the internet + era, the electric vehicle becomes the best carrier of intelligent interconnection, and host factories both at home and abroad issue long-term strategies for vigorously developing the electric vehicle, so that the electric vehicle becomes an irreversible development trend. The biggest difference between electric vehicles and conventional vehicles is in the power source, i.e. in the powertrain. The suspension system realizes flexible connection between the power assembly and the whole vehicle, and plays roles in fixing and limiting the power assembly, eliminating torque impact and isolating the vibration of the power assembly from the vehicle body.
At present, most electric vehicles at home and abroad share a platform with a traditional vehicle and are derived from the traditional vehicle, however, the power assembly of the electric vehicle is usually smaller than that of the traditional vehicle but has larger torque, and if the parts of the original platform are required to be changed as little as possible, the difficult problems in space and strength need to be overcome, which provides a great challenge for the design of a suspension system. Therefore, the power assembly suspension forms of the electric vehicles which are mainstream in the market mainly include the following forms: first, the suspension type simulates the three-point suspension type of the traditional vehicle, the left suspension mounting point and the right suspension mounting point are still arranged at the original longitudinal beam, the rear suspension is arranged on the front auxiliary frame, but the width of the longitudinal beam is still the same as that of the traditional vehicle, so the suspension type generally has a heavier suspension bracket. The second type of the 'hoisting' type also adopts three-point suspension, the left suspension and the right suspension are still arranged on a left longitudinal beam and a right longitudinal beam or a cross beam arranged on the total amount, but the mounting point on the power assembly is arranged above the power assembly, and the power assembly is arranged on the vehicle body in a hoisting mode. And thirdly, the original auxiliary frame is changed, the power assembly is suspended on the auxiliary frame, the auxiliary frame is changed equivalently to be redeveloped, and the development period is longer.
Besides the pure electric vehicles which share the same platform with the traditional vehicle, the pure electric vehicles with a plurality of brand-new platforms also have almost three-point suspension, and the arrangement forms are also mainly as follows: 1) due to the brand new design of the vehicle body, the width of the longitudinal beam is small, left and right suspension mounting points similar to the suspension form of a traditional vehicle are still adopted and are mounted on the longitudinal beam at the middle-upper positions on two sides of the power assembly through a suspension bracket, and the rear suspension is mounted on the auxiliary frame at the middle-lower position at the rear part of the power assembly. 2) There is not the suspension support, and the suspension is direct integrated on power assembly's motor or reduction gear casing, directly installs power assembly on longeron and sub vehicle frame, and this mode needs redesign motor and reduction gear casing, and the cost is higher and the cycle is longer. 3) The motorcycle type design has great sub vehicle frame, and power assembly passes through the suspension mounting and installs on sub vehicle frame, and sub vehicle frame's development cost is higher.
Therefore, a pure electric vehicle type needs to be derived from an original traditional vehicle platform, and a suspension system which is low in cost, short in development period, easy to assemble and capable of meeting the requirements of rigidity, strength, durability and NVH of the whole vehicle is found.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned current power assembly suspension system, the utility model aims at providing a pure electric vehicles power assembly suspension system with low costs, short development cycle and lightweight.
The utility model provides a technical problem adopt following technical scheme: a pure electric vehicle power assembly suspension system comprises a driving motor assembly and a speed reducer assembly, and comprises a left front suspension bracket, a right front suspension bracket, a rear suspension bracket, a front suspension cross beam, a rear suspension assembly, a left front suspension assembly and a right front suspension assembly;
one end of the left front suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the left front suspension bracket is fixed on the front suspension cross beam through the left front suspension assembly;
one end of the right front suspension bracket is fixed on a driving motor assembly of the power assembly, and the other end of the right front suspension bracket is fixed on the front suspension cross beam through the right front suspension bracket assembly;
one end of the rear suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the rear suspension bracket is fixed on the front auxiliary frame through the rear suspension assembly.
Optionally, the left front suspension assembly, the right front suspension assembly and the rear suspension assembly are in a triangular structure, and a geometric center of the triangular structure is located on a mass center inertia spindle of the power assembly.
Optionally, a final assembly positioning hole is formed in the cross beam between the left front suspension assembly and the right front suspension assembly.
Optionally, a left front lifting lug is formed on the left front suspension bracket, a right front lifting lug is formed on the right front suspension bracket, and a rear lifting lug is formed on the rear suspension bracket.
Optionally, the left front suspension bracket, the right front suspension bracket, the rear suspension bracket and the front suspension beam are all cast-aluminum workpieces.
Optionally, the front suspension cross beam is of a hollow structure.
Optionally, the power assembly further includes a charger bracket, a DC/DC assembly, a high-voltage distribution box and a charger assembly;
the DC/DC assembly, the high-voltage distribution box and the charger assembly are connected to the charger assembly through bolts, the DC/DC assembly, the high-voltage distribution box and the charger assembly are connected to the charger support through bolts, and the charger support is connected to the motor assembly through bolts.
The utility model discloses following beneficial effect has: the utility model discloses a pure electric vehicles power assembly suspension system, more traditional three point suspension system has increased preceding suspension crossbeam, and left front suspension assembly and right front suspension assembly are fixed in preceding suspension crossbeam top, and back suspension assembly installs down the position in the power assembly rear portion and fixes on the sub vehicle frame, and suspension point line and power assembly barycenter coplane, and the line center is almost coincided with the power assembly barycenter. The self gravity, the external excitation and the inertia force of the power assembly are borne by the three suspensions together, the burden of a single suspension is reduced, the left front suspension assembly and the right front suspension assembly also participate in reducing the large torque impact of the driving motor, and the smoothness of the output of the motor is improved. The utility model discloses structural arrangement is reasonable, saves cabin upper portion space, and is with low costs, and the performance is outstanding, has integrateed technology suspended structure and assembly setpoint, has the technology convenience to subtract heavy 20%.
Drawings
Fig. 1 is a schematic structural diagram of a pure electric vehicle powertrain suspension system of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural view of the left front suspension bracket, the right front suspension bracket and the rear suspension bracket of the present invention;
the notation in the figures means: 1-left front suspension bracket, 2-right front suspension bracket, 3-driving motor assembly, 4-rear suspension bracket, 5-reducer assembly, 6-front suspension cross beam, 7-charger bracket, 8-DC/DC assembly, 9-high voltage distribution box, 10-charger assembly, 11-rear lifting lug, 12-right front lifting lug, 13-rear suspension assembly, 14-left front lifting lug, 15-left front suspension assembly, 16-assembly positioning hole, and 17-right front suspension assembly.
Detailed Description
The technical solution of the present invention will be further explained with reference to the following embodiments and accompanying drawings.
Example 1
The embodiment provides a pure electric vehicles power assembly suspension system for install the power assembly on automobile body and frame, it includes left front suspension assembly, right front suspension assembly and back suspension assembly, and, left front suspension assembly, right front suspension assembly and back suspension assembly are triangular distribution to form three point suspension structure.
The power assembly comprises a driving motor assembly 3, a speed reducer assembly 5 and related electric accessories, wherein the related electric accessories comprise a charger bracket 7, a DC/DC assembly 8, a high-voltage distribution box 9 and a charger assembly 10.
Besides, the pure electric vehicle power assembly suspension system further comprises a left front suspension bracket 1, a right front suspension bracket 2, a rear suspension bracket 4, a front suspension cross beam 6 and the like.
One end of the left front suspension bracket 1 is fixed on a reducer assembly of the power assembly, the other end of the left front suspension bracket is fixed on the front suspension cross beam through the left front suspension assembly, similarly, one end of the right front suspension bracket is fixed on a driving motor assembly 3 of the power assembly, the other end of the right front suspension bracket is fixed on the front suspension cross beam through the right front suspension bracket assembly, and a main assembly positioning hole 16 is arranged on the cross beam between the left front suspension assembly and the right front suspension assembly, so that when the power assembly is installed through the main assembly positioning hole, positioning can be provided through the main assembly positioning hole.
One end of the rear suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the rear suspension bracket is fixed on the front auxiliary frame through the rear suspension assembly.
And a left front lifting lug 14 is formed on the left front suspension bracket, a right front lifting lug 12 is formed on the right front suspension bracket, and a rear lifting lug 11 is formed on the rear suspension bracket, so that the power assembly is lifted by the left front lifting lug 14, the right front lifting lug 12 and the rear lifting lug 11 when the power assembly is installed, and the x and y coordinates of the geometric center of the connecting line of the left front lifting lug 14, the right front lifting lug 12 and the rear lifting lug 11 almost coincide with the center of mass of the power assembly because the left front lifting lug 14, the right front lifting lug 12 and the rear lifting lug 11 are respectively formed on the left front suspension bracket 1, the right front suspension bracket 2 and the rear suspension bracket 4, thereby facilitating the lifting of the power assembly during assembly and ensuring the high efficiency and stability of the lifting process.
In this embodiment, the left front suspension bracket 1, the right front suspension bracket 2, the rear suspension bracket 4, and the front suspension cross beam 6 are all cast aluminum workpieces, and the front suspension cross beam is a hollow structure, so that the weight can be greatly reduced.
And the left front suspension assembly, the right front suspension assembly and the rear suspension assembly are in triangular structures, the geometric center of each triangular structure is positioned on the mass center inertia main shaft of the power assembly, so that the vibration caused by starting or large torque output of the power assembly can be effectively inhibited, the impact generated by large torque at the moment can be absorbed, the vibration transmission of the power assembly and a vehicle body is isolated, and the resonance is prevented.
The rear suspension assembly 13 is mounted on the front auxiliary frame through four bolts, the rear suspension bracket 4 is mounted on the rear suspension assembly through one bolt, and is mounted on the speed reducer assembly 5 through 3 bolts.
The front suspension cross beam is installed on the lower sides of the left longitudinal beam and the right longitudinal beam of the pure electric vehicle through four bolts, and the left front suspension assembly 15, the left front suspension support 1, the right front suspension assembly 17 and the right front suspension support 2 are installed on the front suspension cross beam through two bolts respectively. Left front suspension support 1 is installed on 5 left side upper portions of reduction gear assembly through three bolts, and right front suspension support 2 is installed on 3 right front side upper portions of driving motor assembly through three bolts.
In this embodiment, left front suspension assembly and right front suspension assembly's structure is the same, and its outside is sheet metal construction's skeleton shell, and inside is rubber bush. The outside of the rear suspension assembly is an integrated cast aluminum processing part, and the inside of the rear suspension assembly is a circular rubber bushing.
As shown in fig. 2, the DC/DC assembly 8 and the high voltage distribution box 9 are connected to the charger assembly 10 by bolts, the DC/DC assembly 8, the high voltage distribution box 9 and the charger assembly 10 are connected to the charger support 7 by bolts, and the charger support 7 is connected to the driving motor assembly 3 by bolts, thereby forming a main structure of the whole power assembly.
The pure electric vehicles powertrain suspension system of this embodiment is when using:
firstly, power assembly split charging is carried out, a left front suspension bracket 1, a right front suspension bracket 2 and a rear suspension bracket 4 are assembled with power assembly components, meanwhile, a rear suspension assembly 13, a left front suspension assembly 15 and a right front suspension assembly 17 are assembled with a front suspension cross beam 6, a front auxiliary frame and a front sliding column assembly in an equal split manner, and positioning holes in the front suspension cross beam and the auxiliary frame are respectively inserted into positioning pins of a split charging platform.
Then with the power assembly through with the lifting hook behind the lug, the hanging mode of right front lug and left front lug three with the power assembly hoist to the partial shipment bench with left front suspension support, right front suspension support and back suspension support respectively with the rear suspension assembly, the butt joint is accomplished to the mounting point of left front suspension assembly and right front suspension assembly and with the bolt-up, later carry out the final assembly with whole car with the assembly on the partial shipment bench, aim at the mounting point of front suspension crossbeam and the mounting point of preceding sub vehicle frame respectively, because location structure's design, the centering can be accomplished very fast to the mounting point, later fasten and accomplish the final assembly.
The utility model discloses a pure electric vehicles power assembly suspension system, more traditional three point suspension system has increased preceding suspension crossbeam, and left front suspension assembly and right front suspension assembly are fixed in preceding suspension crossbeam top, and back suspension assembly installs down the position in the power assembly rear portion and fixes on the sub vehicle frame, and suspension point line and power assembly barycenter coplane, and the line center is almost coincided with the power assembly barycenter. The self gravity, the external excitation and the inertia force of the power assembly are borne by the three suspensions together, the burden of a single suspension is reduced, the left front suspension assembly and the right front suspension assembly also participate in reducing the large torque impact of the driving motor, and the smoothness of the output of the motor is improved. The utility model discloses structural arrangement is reasonable, and is with low costs, and the performance is outstanding, has integrateed technology suspended structure and assembly setpoint, has the technology convenience to subtract heavy 20%.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. A pure electric vehicles power assembly suspension system, the power assembly includes driving motor assembly and reducer assembly, characterized by, including left front suspension support, right front suspension support, rear suspension support, front suspension crossbeam, rear suspension assembly, left front suspension assembly and right front suspension assembly;
one end of the left front suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the left front suspension bracket is fixed on the front suspension cross beam through the left front suspension assembly;
one end of the right front suspension bracket is fixed on a driving motor assembly of the power assembly, and the other end of the right front suspension bracket is fixed on the front suspension cross beam through the right front suspension bracket assembly;
one end of the rear suspension bracket is fixed on a speed reducer assembly of the power assembly, and the other end of the rear suspension bracket is fixed on the front auxiliary frame through the rear suspension assembly.
2. A pure electric vehicle powertrain suspension system of claim 1, wherein the left front suspension assembly, the right front suspension assembly and the rear suspension assembly are triangular structures, and the geometric centers of the triangular structures are located on the principal axis of mass inertia of the powertrain.
3. A pure electric vehicle powertrain suspension system of claim 1, wherein a final assembly locating hole is provided on the cross beam between the left front suspension assembly and the right front suspension assembly.
4. A pure electric vehicle powertrain suspension system of claim 1, wherein a left front lifting lug is formed on the left front suspension bracket, a right front lifting lug is formed on the right front suspension bracket, and a rear lifting lug is formed on the rear suspension bracket.
5. The pure electric vehicle powertrain suspension system of claim 1, wherein the left front suspension bracket, the right front suspension bracket, the rear suspension bracket, and the front suspension cross beam are cast aluminum workpieces.
6. The suspension system of a pure electric vehicle powertrain of claim 1, wherein the front suspension cross member is a hollow structure.
7. The pure electric vehicle power assembly suspension system according to claim 1, wherein the power assembly further comprises a charger bracket, a DC/DC assembly, a high-voltage distribution box and a charger assembly;
the DC/DC assembly, the high-voltage distribution box and the charger assembly are connected to the charger assembly through bolts, the DC/DC assembly, the high-voltage distribution box and the charger assembly are connected to the charger support through bolts, and the charger support is connected to the motor assembly through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920182514.1U CN209870075U (en) | 2019-02-01 | 2019-02-01 | Pure electric automobile power assembly suspension system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920182514.1U CN209870075U (en) | 2019-02-01 | 2019-02-01 | Pure electric automobile power assembly suspension system |
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| CN209870075U true CN209870075U (en) | 2019-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693526A (en) * | 2019-02-01 | 2019-04-30 | 中国第一汽车股份有限公司 | Pure electric automobile power assembly suspension system |
| CN112659840A (en) * | 2021-01-04 | 2021-04-16 | 北京汽车集团越野车有限公司 | Cross country vehicle traveller upper end mount and cross country vehicle |
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2019
- 2019-02-01 CN CN201920182514.1U patent/CN209870075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693526A (en) * | 2019-02-01 | 2019-04-30 | 中国第一汽车股份有限公司 | Pure electric automobile power assembly suspension system |
| CN112659840A (en) * | 2021-01-04 | 2021-04-16 | 北京汽车集团越野车有限公司 | Cross country vehicle traveller upper end mount and cross country vehicle |
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