CN213167687U - Integrated pure electric vehicle power assembly integration device - Google Patents

Abstract

The utility model belongs to the technical field of the car, specific pure electric vehicles power assembly integrated device who integrates that says so. The system comprises a power assembly, an auxiliary frame, a suspension system, a driving shaft, a high-voltage wire harness, a high-voltage distribution box, a vacuum tank, a charger integrated DCDC, an electric air-conditioning compressor and an electric vacuum pump; the power assembly is fixed on the suspension system. The device arranges the integrated layout of preceding cabin essential element on power assembly through rationalizing arranging, increasing suitable structure, can improve the part universalization rate, improves production assembly efficiency and easy maintenance nature, and through arranging the optimization, realizes the lightweight design, can effectively improve the NVH performance, improve the collision security, has solved because of the too much difficult problem of arranging that brings of pure electric vehicles annex.

Description

Integrated pure electric vehicle power assembly integration device

Technical Field

The utility model belongs to the technical field of the car, specific pure electric vehicles power assembly integrated device who integrates that says so.

Background

Compared with a fuel vehicle, the engine and the transmission of the pure electric vehicle cabin are eliminated, and a driving motor, a speed reducer and high-voltage accessories are correspondingly added. The high-voltage accessories of the pure electric vehicle are provided with a charger integrated with a direct current-direct current (DCDC) converter, a high-voltage distribution box and the like, are limited to a limited front engine room space, and also provide higher requirements for the integrated arrangement of a power assembly and the high-voltage accessories thereof.

The existing cabin arrangement structure of the pure electric automobile comprises a power assembly, a cabin main beam, a motor controller, a high-voltage electric distribution box, an electric air-conditioning compressor and an electric vacuum pump, wherein a left suspension and a right suspension of the power assembly are arranged on a vehicle body longitudinal beam, the overall structure occupies a larger space, and the consideration on the aspects of collision safety, light weight and the like is not specifically related to arrangement.

Disclosure of Invention

The utility model provides a pure electric vehicles power assembly integrated device that simple structure's integrated, the device arranges through rationalization, increase suitable structure with preceding cabin essential element integration and arrange on power assembly, can improve the part universalization rate, improve production assembly efficiency and easy maintenance nature, and through arranging the optimization, realize the lightweight design, can effectively improve the NVH performance, improve collision security, the difficult problem of arranging because of pure electric vehicles annex is too much brought has been solved.

The technical scheme of the utility model is explained as follows with the attached drawings:

an integrated pure electric vehicle power assembly integrated device comprises a power assembly, an auxiliary frame 2, a suspension system, a driving shaft 5, a high-voltage wire harness 7, a high-voltage distribution box 10, a vacuum tank 11, a charger integrated DCDC12, an electric air-conditioning compressor 15 and an electric vacuum pump 16; the power assembly is fixed on the suspension system; the power assembly is integrated by a motor, an inverter 1 and a speed reducer 19; the suspension system is fixed on the auxiliary frame 2; the auxiliary frame 2 is fixed on left and right longitudinal beams of the vehicle body; the driving shaft 5 is fixed on the motor shell; the inverter is arranged in the transverse direction of the high-voltage wire harness 7 interface; the charger integration DCDC12, the electric air-conditioning compressor 15 and the electric vacuum pump 16 are all arranged above the power assembly; the electric air-conditioning compressor 15 is fixed above the speed reducer 19 through an air-conditioning compressor bracket 20; the air conditioner compressor bracket 20 is also fixed on the motor shell; the electric vacuum pump 16 is fixed on the air-conditioning compressor bracket 20 through an electric vacuum pump bracket 17; the charger integrated DCDC12 is fixed through a sheet metal bracket; the metal plate support is fixed on the air conditioner compressor support 20 and the motor shell; the charger integrated DCDC12 is connected with the motor through a bracket; the high-voltage distribution box 10 and the vacuum tank 11 are both fixed on the motor integrated DCDC 12; the high-voltage distribution box 10 is fixed on a boss of the motor integrated DCDC12 through a high-voltage distribution box bracket 9; the vacuum tank 11 is fixed on the boss of the motor integrated DCDC12 through the vacuum tank bracket 21.

The suspension system comprises a rear suspension and a rear suspension bracket 3, a right suspension and a right suspension bracket 6 and a left suspension bracket 18; the rear suspension is connected with the speed reducer 19 through a rear suspension bracket; the right suspension is fixed on the auxiliary frame 2; the right suspension is connected with the motor shell through a right suspension bracket; the right suspension bracket is fixed on the motor; the left suspension is fixed on the auxiliary frame 2; the left suspension is connected with the speed reducer shell through the left suspension support.

The left suspension and the right suspension are bilaterally symmetrical.

The driving shaft 5 is divided into three sections, and the intermediate shaft is fixed on the motor shell through an intermediate shaft support.

The charger integrated DCDC12 is fixed on the first charger integrated DCDC fixing support 13, the second charger integrated DCDC fixing support 22 and the charger integrated DCDC fixing transition support 8; the first charger is integrated with a DCDC fixed support 13 and is fixedly connected with an air-conditioning compressor support 20; the second charger integrated DCDC fixing support 22 is fixedly connected with the charger integrated DCDC fixing transition support 8; and the charger integrated DCDC fixed transition support 8 is fixed on a boss of the motor integrated DCDC 12.

The charger integrated DCDC12 is fixed through four sheet metal supports, wherein the sheet metal support of compressor side is fixed on air condition compressor support 20, and two sheet metal supports of opposite side are connected with the motor casing through a transition sheet metal support.

The vacuum tank bracket 21 and the high-voltage distribution box bracket 9 share two boss fixing points and are fixed on a boss of the motor integrated DCDC 12.

The utility model has the advantages that:

1) the utility model integrates various accessories above the power assembly, realizes the generalization of parts, saves the space of the engine room and leads the engine room to be more regular and beautiful;

2) the fixing bracket of the utility model realizes light weight through weight reduction design, and reduces weight; the integrated design reserves enough clearance between the power assembly and the front anti-collision beam as well as between the power assembly and the front surrounding plate, and improves the collision safety by reasonably designing the suspension position and the shape of the suspension bracket;

3) the vacuum tank is additionally arranged, so that the working frequency of the vacuum pump is reduced, the vacuum pump and the air conditioner compressor are arranged far away from the cab, and the NVH performance is effectively improved;

4) the utility model discloses improve assembly efficiency through modes such as reducing fixed point, unified standard part model when arranging, the dismouting maintenance of being convenient for. In addition, all high-voltage components all have high-voltage marks, and the visibility of the marks is considered during arrangement, so that the safety of personnel is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic diagram of the power assembly arrangement of a pure electric vehicle of the present invention;

fig. 2 is a schematic view of the high-voltage distribution box bracket and the electric vacuum pump of the present invention;

fig. 3 is a schematic diagram of the charger integrated DCDC bracket and the transition bracket thereof;

fig. 4 is a schematic view of the air conditioner compressor bracket of the present invention;

fig. 5 is a schematic view of the suspension system of the present invention.

In the figure: 1. a motor and an inverter; 2. an auxiliary frame; 3. a rear suspension and a rear suspension bracket; 4. a steering machine; 5. a drive shaft; 6. a right suspension and a right suspension bracket; 7. a high voltage wire harness; 8. the charger is integrated with a DCDC fixed transition support; 9. a high voltage distribution box support; 10. a high voltage distribution box; 11. a vacuum tank; 12. the motor is integrated with DCDC; 13. the first charger is integrated with a DCDC fixed support; 14. an air conditioning duct; 15. an electric air conditioning compressor; 16. an electric vacuum pump; 17. an electric vacuum pump bracket; 18. a left suspension and a left suspension bracket; 19. a speed reducer; 20. an air conditioner compressor bracket; 21. a vacuum tank holder; 22. the second charger is integrated with a DCDC fixed support.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Referring to fig. 1, an integrated pure electric vehicle power assembly integrated device comprises a power assembly, an auxiliary frame 2, a suspension system, a driving shaft 5, a high-voltage wire harness 7, a high-voltage distribution box 10, a vacuum tank 11, a charger integrated DCDC12, an electric air conditioner compressor 15 and an electric vacuum pump 16.

The power assembly is fixed on the suspension system; the power assembly is integrated by integrating the motor, the inverter 1 and the speed reducer 19 into a whole, the integration level is high, the space is saved for the arrangement of other high-voltage accessories, and meanwhile, the platform transplantation and modularization are facilitated. The steering engine 4 is connected with the power assembly.

The motor is bolted to the reducer 19 and the motor is bolted to the inverter. The reducer 19 is on the left side of the motor and the inverter is on the right side of the motor. The power assembly provides a fixed point for accessory attachment. The orientation of the high-voltage connector interface of the inverter is transverse, so that the high-voltage connector is prevented from being crushed by collision, and the collision safety is improved.

The inverter is arranged in the transverse direction of the high-voltage wire harness 7 interface, so that the situation that the anode and the cathode are short-circuited due to the fact that the high-voltage connector is broken by possible collision is avoided.

Referring to fig. 5, the suspension system includes a rear suspension and rear suspension bracket 3, a right suspension and right suspension bracket 6, and a left suspension and left suspension bracket 18; the suspension system is in a three-point type, is simple to assemble and high in assembly efficiency, can effectively inhibit the rotation of the motor in the collision process, avoids the deformation of the cabin cover or the front coaming caused by the rotation collision of the motor and accessories after collision, and ensures the safety of members and pedestrians. The rear suspension passes through four-point bolted connection on sub vehicle frame 2, and the front suspension stabilizer bar passes in the arch space that forms between rear suspension and the sub vehicle frame 2 simultaneously, makes whole power assembly integrate more to the rear suspension provides dodging for the suspension stabilizer bar. The rear suspension bracket is connected to the rear suspension through a point bolt, and the other end of the rear suspension bracket is connected to the speed reducer 19 through a three-point bolt. The left suspension and the right suspension are bilaterally symmetrical and interchangeable, development cost is reduced, and assembly efficiency is improved.

The right suspension is fixed on the auxiliary frame 2 through two points, the right suspension is connected with the motor shell through a right suspension support, and the right suspension support is connected with the motor shell through three points. The left suspension is fixed on the auxiliary frame 2 through two points, the left suspension is connected with the speed reducer shell through a left suspension support, and the left suspension support is connected with the speed reducer shell through three points.

The left and right suspensions are each bolted to the subframe 2 at two points. The left suspension and the right suspension are respectively connected with the power assembly through a left suspension bracket and a right suspension bracket, and are bolted with the power assembly through three points, and the suspension brackets are bolted on the suspensions through one point. The difference between the left and right suspension brackets is that the left suspension bracket is fixed to the speed reducer 19, the right suspension bracket is fixed to the motor, and the shapes of the brackets are adjusted according to the boundary characteristics and the CAE analysis.

The suspension system is fixed to the subframe 2.

The auxiliary frame 2 is fixed on the left longitudinal beam and the right longitudinal beam of the vehicle body through four bolts, supports are provided for a power assembly, the connection is reliable, the assembly is simple, and the assembly efficiency is improved. The auxiliary frame 2 is a casting, and after the assembly is completed, the lowest point of the auxiliary frame is lower than the lowest point of the power assembly, so that the effect of protecting the power assembly from being damaged is achieved.

The drive shaft 5 is divided into three sections, wherein the intermediate shaft is fixed to the motor housing by means of an intermediate shaft support.

Referring to fig. 1, 2, 3 and 4, the high voltage distribution box 10, the charger integrated DCDC12, the electric air conditioning compressor 15, the electric vacuum pump 16 and other accessories are all arranged above the power assembly, so that the space of the cabin is fully utilized, the problem of difficult arrangement caused by excessive accessories is solved, and the cabin is tidy and attractive.

The electric air-conditioning compressor 15 is fixed above the speed reducer 19 through an air-conditioning compressor bracket 20. The electric air-conditioning compressor 15 is bolted to the air-conditioning compressor bracket 20 at three points. The fixing point of the air condition compressor bracket 20 corresponding to the electric air condition compressor 15 is a threaded hole, and no additional nut is needed in assembly. The electric air-conditioning compressor 15 is provided with an air-conditioning pipe 14. The air-conditioning compressor support 20 is fixed by four points, two points of which are fixed on the reducer 19 and two points of which are fixed on the motor housing. The air conditioner compressor bracket 20 provides a fixed point for the charger integrated DCDC bracket and the electric vacuum pump bracket at the same time. The electric vacuum pump 16 is fixed on the air-conditioning compressor support through the electric vacuum pump support, and the electric air-conditioning compressor 15 and the electric vacuum pump 16 are arranged in the front-back direction. The electric vacuum pump 16 is fixed to the electric vacuum pump support.

The charger integrated DCDC12 is fixed through four sheet metal supports. The sheet metal support of compressor side is fixed on the compressor support. And the two metal plate supports on the other side are connected with the motor shell through a charger integrated DCDC fixed transition support 8. Compared with an integrated large support, the split metal plate support is light in weight.

The high-voltage distribution box 10 and the vacuum tank 11 are fixed above the charger integrated DCDC 12. Considering that the charger integrated DCDC12 is a modularized part, in order to reduce development cost, a high-voltage distribution box support and a vacuum tank support are added and are respectively used for fixing the high-voltage distribution box 10 and the vacuum tank 11. The distance between the vacuum tank 11 and the electric vacuum pump 16 is small, and the required vacuum pipeline is short, so that the performance of the braking system is effectively ensured. The high-voltage distribution box support is fixed on a boss of the charger integrated DCDC12 through four points, matches fixing points for three pins of the high-voltage distribution box 10, and carries out reasonable weight reduction design. The vacuum tank support is fixed on a boss of the charger integrated DCDC12 through four points, wherein two points are shared by the high-voltage distribution box support, fixed points are designed for matching three pins of the vacuum tank 11, reasonable weight reduction design is carried out according to structural characteristics, the weight is reduced, the assembly is convenient, and meanwhile, the disassembly, assembly and maintenance are convenient.

The high-voltage distribution box 10 reasonably adjusts the high-voltage interface according to the arrangement position of the high-voltage accessories, so that the crossing condition of high-voltage wire harnesses is reduced, and the problem of electromagnetic interference is solved. The high-voltage interface is towards the direction of vehicle advancing (or the direction of advance) as far as possible, and the design of adopting high-voltage distribution box to get rid of the line is inevitable to effectively avoid the possible collision condition extrusion high-voltage connector breakage to cause the positive negative pole short circuit of high pressure, and then promote whole car security. The current that two high-voltage interfaces on the motor inverter pass through is great, and the interface is along the motor axial during the design, can not break high-voltage connector in the collision process that probably to reduce the short circuit risk. The power assembly and the integrated design fully utilize the layout space, reserve enough gaps for the power assembly and the front anti-collision beam, the power assembly and the front coaming, thereby having enough buffering energy-absorbing space in possible collision, avoiding rigid collision and transmitting the direct front coaming, and providing safe driving space for passengers. The lowest point of the power assembly is higher than the lowest point of the auxiliary frame, so that the power assembly is prevented from being damaged in the driving process.

The utility model integrates various accessories above the power assembly through the structural design, thereby realizing the generalization of parts, saving the space of the engine room and leading the engine room to be more regular and beautiful; the fixed support realizes light weight through weight reduction design, and the weight is reduced; the integrated design reserves enough clearance between the power assembly and the front anti-collision beam as well as between the power assembly and the front surrounding plate, and improves the collision safety by reasonably designing the suspension position and the shape of the suspension bracket; through installing the vacuum tank additional, reduce the operating frequency of vacuum pump, and arrange vacuum pump and air condition compressor and get away from the driver's cabin, effectively improve the NVH performance. The assembly efficiency is improved by reducing fixing points, unifying standard part models and the like during arrangement, and the assembly, disassembly and maintenance are convenient. In addition, all high-voltage components all have high-voltage marks, and the visibility of the marks is considered during arrangement, so that the safety of personnel is guaranteed.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. An integrated pure electric vehicle power assembly integration device is characterized by comprising a power assembly, an auxiliary frame (2), a suspension system, a driving shaft (5), a high-voltage wire harness (7), a high-voltage distribution box (10), a vacuum tank (11), a charger integrated DCDC (12), an electric air-conditioning compressor (15) and an electric vacuum pump (16); the power assembly is fixed on the suspension system; the power assembly is integrated by a motor, an inverter (1) and a speed reducer (19) in an integrated manner; the suspension system is fixed on the auxiliary frame (2); the auxiliary frame (2) is fixed on the left and right longitudinal beams of the vehicle body; the driving shaft (5) is fixed on the motor shell; the inverter is arranged in the transverse direction of the high-voltage wire harness (7) interface; the charger is integrated with a DCDC (12), an electric air-conditioning compressor (15) and an electric vacuum pump (16) which are all arranged above the power assembly; the electric air-conditioning compressor (15) is fixed above the speed reducer (19) through an air-conditioning compressor bracket (20); the air conditioner compressor bracket (20) is also fixed on the motor shell; the electric vacuum pump (16) is fixed on the air-conditioning compressor bracket (20) through an electric vacuum pump bracket (17); the charger integrated DCDC (12) is fixed through a sheet metal bracket; the metal plate support is fixed on an air conditioner compressor support (20) and a motor shell; the charger integrated DCDC (12) is connected with the motor through a bracket; the high-voltage distribution box (10) and the vacuum tank (11) are both fixed on the motor integrated DCDC (12); the high-voltage distribution box (10) is fixed on a boss of the motor integrated DCDC (12) through a high-voltage distribution box bracket (9); the vacuum tank (11) is fixed on a boss of the motor integrated DCDC (12) through a vacuum tank bracket (21).

2. An integrated pure electric vehicle powertrain integration device according to claim 1, wherein the suspension system comprises a rear suspension and rear suspension bracket (3), a right suspension and right suspension bracket (6), and a left suspension and left suspension bracket (18); the rear suspension is connected with a speed reducer (19) through a rear suspension bracket; the right suspension is fixed on the auxiliary frame (2); the right suspension is connected with the motor shell through a right suspension bracket; the right suspension bracket is fixed on the motor; the left suspension is fixed on the auxiliary frame (2); the left suspension is connected with the speed reducer shell through the left suspension support.

3. The integrated pure electric vehicle powertrain integration device of claim 2, wherein the left suspension and the right suspension are bilaterally symmetrical.

4. The integrated pure electric vehicle power assembly integration device as claimed in claim 1, wherein the driving shaft (5) is divided into three sections, and the intermediate shaft is fixed on the motor housing through an intermediate shaft bracket.

5. The integrated pure electric vehicle power assembly integration device according to claim 1, wherein the charger integrated DCDC (12) is fixed on a first charger integrated DCDC fixing support (13), a second charger integrated DCDC fixing support (22) and a charger integrated DCDC fixing transition support (8); the first charger is integrated with a DCDC fixed support (13) and is fixedly connected with an air-conditioning compressor support (20); the second charger integrated DCDC fixing support (22) is fixedly connected with the charger integrated DCDC fixing transition support (8); and the charger integrated DCDC fixed transition support (8) is fixed on a boss of the motor integrated DCDC (12).

6. The integrated pure electric vehicle power assembly integration device according to claim 1, wherein the charger integrated DCDC (12) is fixed by four sheet metal supports, wherein the sheet metal support on the compressor side is fixed on the air conditioner compressor support (20), and the two sheet metal supports on the other side are connected with the motor housing by a transition sheet metal support.

7. The integrated pure electric vehicle power assembly integration device as claimed in claim 1, wherein the vacuum tank bracket (21) and the high-voltage distribution box bracket (9) share two boss fixing points and are fixed on a boss of the motor integrated DCDC (12).

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