CN218197904U

CN218197904U - Automobile driving mechanism

Info

Publication number: CN218197904U
Application number: CN202221957295.8U
Authority: CN
Inventors: 熊峰; 马守明; 陈振坡; 陆鹏程; 邢峰
Original assignee: Ruikong Zhihang Automobile Technology Nantong Co ltd
Current assignee: Ruikong Zhihang Automobile Technology Nantong Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-01-03
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses an automobile driving mechanism, this mechanism includes: the engine is connected with the planet carrier of the first planet row; the first motor is connected with the sun gear of the second planet row; the sun gear of the first planet row is connected with the sun gear of the second planet row; the first brake is connected with the first planet row; the second brake is connected with the second planet row; the planet carrier of the second planet row is connected with a first differential mechanism through a first speed reducer, and the first differential mechanism is connected with a first driving shaft; the second motor is connected with a second differential mechanism through a second speed reducer, and the second differential mechanism is connected with a second driving shaft; the first motor and the second motor are connected with a motor controller; the motor controller is connected with the power battery. The utility model provides a pair of automobile driving mechanism, under the condition that only needs two motors, realize complete four-wheel drive function, simple structure, control is simple, practices thrift the vehicle space, has effectively reduced manufacturing cost.

Description

Automobile driving mechanism

Technical Field

The embodiment of the utility model provides a relate to hybrid vehicle drive transmission technical field, especially relate to a car actuating mechanism.

Background

At present, series-parallel hybrid power systems are more and more widely applied to automobile markets at home and abroad due to excellent comprehensive performance of the series-parallel hybrid power systems. With the demand of users for higher performance of vehicles and the special requirements of some tool models or off-road models for dynamic performance and trafficability, hybrid four-wheel drive is usually realized by adding an electric drive axle on the basis of hybrid two-wheel drive or transmitting the electric drive axle to another axle through a transfer case, so as to meet the multiple demands of the vehicles on fuel saving and trafficability.

The traditional transfer case transmission shaft type four-wheel driving device is long in transmission path, occupies precious space below a vehicle chassis, and influences the battery arrangement of a hybrid vehicle type, particularly a large battery pack scheme.

Meanwhile, the arrangement of an engine and double motors on one shaft occupies a larger space, and particularly, the scheme of a large motor with high requirement on dynamic property is adopted, so that the volume of the whole driving system is larger, and the requirement on the arrangement space of a front cabin is higher. On the basis, if one driving motor on the double-motor side is directly taken away, the problems of cost, size and arrangement of a large part can be solved, but the whole system cannot realize the four-wheel drive function in the medium-low speed range, and the driving system on the engine side in the medium-low speed range can only be in a power generation or stop state and cannot embody the characteristics of the four-wheel drive trafficability and the power performance.

The utility model discloses an application number 202022424655.5's utility model discloses an automobile driving system and car, the demand to mixing the four driving has made new design, the combination scheme that adopts clutch, stopper and planet row arranges two motor split shafts and has solved certain cost, volume and the problem of arranging, but its scheme can't realize pure electric four driving function, must realize four driving function through power split or generator direct drive after the engine starts through another epaxial electric drive unit of cooperation again. This design limits one of the drive shafts to the engine and its matching ratio in terms of four-wheel drive capability, resulting in considerable losses in efficiency and capacity, and inherently complicates the control of the power split system, and the arrangement of the two motor split shafts in this solution makes the control more complicated by torque coupling compensation through the ground.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automobile driving mechanism can solve one or more among the above-mentioned prior art problem.

The utility model provides a car actuating mechanism, include:

the system comprises an engine, a first motor, a second motor, a first planet row, a second planet row, a first brake, a second brake, a first speed reducer, a second speed reducer, a first differential, a second differential, a motor controller and a power battery;

the engine is connected with the planet carrier of the first planet row;

the first motor is connected with the sun gear of the second planet row;

the sun gear of the first planet row is connected with the sun gear of the second planet row;

the first brake is connected with the first planet row;

the second brake is connected with the second planet row;

the planet carrier of the second planet row is connected with a first differential mechanism through a first speed reducer, and the first differential mechanism is connected with a first driving shaft;

the second motor is connected with a second differential mechanism through a second speed reducer, and the second differential mechanism is connected with a second driving shaft;

the first motor and the second motor are connected with a motor controller;

the motor controller is connected with the power battery.

In a possible embodiment, a torsional damper is connected between the engine and the first planetary row.

In a possible embodiment, a dual mass flywheel is connected between the engine and the first planetary row.

In a possible embodiment, the rotary shaft of the engine is connected to the primary of the dual mass flywheel, the secondary of which is connected to the planet carrier of the first planetary row.

In a possible embodiment, a transfer gear is connected to the first drive shaft or the second drive shaft.

The utility model provides a pair of automobile driving mechanism, through the engine, the setting of first planet row and second planet row, make two planet row as first drive epaxial engine to first reduction gear and first motor to the speed change mechanism of first reduction gear, also regard as the coupling mechanism between engine and the first motor simultaneously, first planet row and second planet row can cooperate through the control of first stopper and second stopper to realize pure electric drive, parallelly connected drive and three kinds of drive modes of range extension are established ties, combine the second drive epaxial second motor, realize pure electric four-wheel drive and the function of mixing four-wheel drive. Through the arrangement of the engine, the first planetary gear set, the second planetary gear set, the first motor and the second motor, under the condition that only two motors are needed, the complete four-wheel drive function can be realized through simple control, the structure is simple, the control method is simple, additional motors are not needed, the vehicle space is saved, and the production cost is effectively reduced; for a vehicle with a large battery pack scheme, the requirements of the whole vehicle on trafficability, dynamic performance and economy can be met while the requirement of a battery pack arrangement space is better met; a clutch is not required to be arranged in the driving mechanism, so that the requirement of high pressure in hydraulic pressure is saved, and the production cost is further reduced; under pure electric drive mode, realized that only one motor participates in the drive. And the other motor keeps a static state, so that the overall economy of the vehicle is further improved.

In addition, in the technical solutions of the present invention, the technical solutions can be implemented by adopting conventional means in the art, which are not specifically described.

Drawings

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

Fig. 1 is a schematic structural diagram of an automobile driving mechanism according to an embodiment of the present invention.

Detailed Description

The terms "including" and "having," and any variations thereof, in the description and claims of this invention are intended to cover non-exclusive inclusions.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to the attached drawing 1 of the specification, the embodiment of the present invention provides an automobile driving mechanism, including: the system comprises an engine 1, a first motor 2, a second motor 3, a first planetary gear 4, a second planetary gear 5, a first brake 6, a second brake 7, a first speed reducer 8, a second speed reducer 9, a first differential 10, a second differential 11, a motor controller 12 and a power battery 15.

The engine 1 is connected with a planet carrier of the first planet row 4; the first motor 2 is connected with the sun gear of the second planet row 5; the sun gear of the first planet row 4 is connected with the sun gear of the second planet row 5; the first brake 6 is connected with the first planet row 4; the second brake 7 is connected with the second planet row 5; the planet carrier of the second planet row 5 is connected with a first differential mechanism 10 through a first speed reducer 8, and the first differential mechanism 10 is connected with a first driving shaft 13; the second motor 3 is connected with a second differential mechanism 11 through a second speed reducer 9, and the second differential mechanism 11 is connected with a second driving shaft 14; the first motor 2 and the second motor 3 are connected with a motor controller 12; the motor controller 12 is connected to a power battery 15.

In an alternative embodiment, the engine 1 and the first electric machine 2 may output power to the first drive shaft 13 through different connection positions of the first planetary row 4 and the second planetary row 5.

Specifically, the first brake 6 brakes the ring gear of the first planetary row 4; the second brake 7 brakes the ring gear of the second planetary row 5. The first brake 6 and the second brake 7 thus brake by braking the ring gears of the first planetary row 4 and the second planetary row 5, respectively. In a possible embodiment, the transmission ratio is changed by changing the positions of the first brake 6 and the second brake 7.

In an alternative embodiment, a torsional damper is connected between the engine 1 and the first planetary row 4.

In an alternative embodiment, a dual mass flywheel is connected between the engine 1 and the first planetary row 4.

In an alternative embodiment, the rotating shaft of the engine 1 is connected to the primary of a dual mass flywheel, the secondary of which is connected to the planet carrier of the first planet row 4.

This effectively reduces transmission shock of the engine 1 to the first planetary gear set 4.

In an alternative embodiment, a transfer case is connected to the first drive shaft 13 or the second drive shaft 14.

Thereby, the addition of a transfer case enables a part of the power to be transmitted to the other drive shaft.

In an alternative embodiment, a planetary row may be added to further achieve multiple drive ratios.

The automobile driving mechanism disclosed by the embodiment can realize three driving modes, namely a pure electric driving mode, a series range-extending driving mode and a parallel driving mode.

When the first brake 6 is released, the second brake 7 brakes, the torque of the first motor 2 is transmitted to the planet wheels of the second planet row 5 through the sun wheel of the second planet row 5, the planet wheels of the first planet row 4 move along with the planet wheels of the second planet row 5, the gear ring of the first planet row 4 idles due to the release state of the first brake 6, the engine 1 connected with the planet carrier of the first planet row 4 keeps a static state, the torque of the planet wheels of the second planet row 5 is transmitted to the planet carrier of the second planet row 5 due to the brake state of the second brake 7 and then transmitted to the first driving shaft 13 through the first speed reducer 8 connected with the planet carrier of the second planet row 5 and the first differential 10, and the vehicle is provided with a driving force by the first motor 2 and the second motor 3 together, and is in an electric-only driving mode;

when the first brake 6 brakes, the second brake 7 releases, the torque of the engine 1 is transmitted to the sun gear of the first planet row 4 through the planet carrier of the first planet row 4, the sun gear of the first planet row 4 is rigidly connected with the sun gear of the second planet row 5, because the second brake 7 is in a release state, the ring gear of the second planet row 5 idles, the first speed reducer 8 and the first differential 10 connected with the planet carrier of the second planet row 5 keep the original state, the torque of the sun gear of the second planet row 5 is transmitted to the first motor 2, the engine 1 and the first motor 2 are connected in series, and the series range-extended driving mode is adopted at the moment;

when the first brake 6 and the second brake 7 are both in a braking state, the torque of the engine 1 is transmitted to the sun gear of the first planetary row 4 through the planet carrier of the first planetary row 4, the sun gear of the first planetary row 4 is rigidly connected with the sun gear of the second planetary row 5, the ring gear of the second planetary row 5 is braked, the torque of the sun gear of the second planetary row 5 can be transmitted to the planet carrier of the first motor 2 and the planet carrier of the second planetary row 5, and then transmitted to the first driving shaft 13 through the first speed reducer 8 and the first differential 10 connected with the planet carrier of the second planetary row 5, and simultaneously, the torque of the first motor 2 can also be transmitted to the planet carrier of the second planetary row 5 through the sun gear of the second planetary row 5, and then transmitted to the first driving shaft 13 through the first speed reducer 8 and the first differential 10 connected with the planet carrier of the second planetary row 5, and the engine 1 and the first motor 2 are connected in parallel, and then in a parallel driving mode.

The utility model provides a pair of automobile driving mechanism, through engine 1, first planet is arranged 4 and the setting of second planet row 5, make two planet row as engine 1 to first reduction gear 8 and first motor 2 to the speed change mechanism of first reduction gear 8 on first drive shaft 13, also regard as the coupling mechanism between engine 1 and the first motor 2 simultaneously, first planet row 4 and second planet row 5 can cooperate through the control of first stopper 6 and second stopper 7 and realize pure electric drive, three kinds of drive modes of parallel drive and series connection range extension drive, combine the second motor 3 in the second drive shaft 14, realize pure electric four-wheel drive and the function of mixing four-wheel drive. Through the arrangement of the engine 1, the first planet row 4, the second planet row 5, the first motor 2 and the second motor 3, under the condition that only two motors are needed, the complete four-wheel drive function can be realized through simple control, the structure is simple, the control method is simple, additional motors are not needed, the vehicle space is saved, and the production cost is effectively reduced; for a vehicle with a large battery pack scheme, the requirements of the whole vehicle on trafficability, dynamic performance and economy can be met while the requirement of a battery pack arrangement space is better met; a clutch is not required to be arranged in the driving mechanism, so that the requirement of high pressure in hydraulic pressure is saved, and the production cost is further reduced; under pure electric drive mode, realized that only one motor participates in the drive. The other motor keeps a static state, so that the overall economy of the vehicle is further improved; the power structure of first drive shaft 13 and second drive shaft 14 does not have mechanical connection, and drive torque distribution proportion can be adjusted in very big range, need not to carry out the moment of torsion compensation that the engine was started and engine operating point adjusted to first drive shaft 13 through second drive shaft 14, has greatly reduced the degree of difficulty of control strategy development, improves production efficiency.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An automotive drive mechanism, comprising:

the system comprises an engine (1), a first motor (2), a second motor (3), a first planet row (4), a second planet row (5), a first brake (6), a second brake (7), a first speed reducer (8), a second speed reducer (9), a first differential (10), a second differential (11), a motor controller (12) and a power battery (15);

the engine (1) is connected with a planet carrier of the first planet row (4);

the first motor (2) is connected with a sun gear of the second planet row (5);

the sun wheel of the first planet row (4) is connected with the sun wheel of the second planet row (5);

the first brake (6) is connected with the first planet row (4);

the second brake (7) is connected with the second planetary row (5);

the planet carrier of the second planet row (5) is connected with the first differential (10) through the first speed reducer (8), and the first differential (10) is connected with a first driving shaft (13);

the second motor (3) is connected with the second differential (11) through the second speed reducer (9), and the second differential (11) is connected with a second driving shaft (14);

the first motor (2) and the second motor (3) are connected with the motor controller (12);

the motor controller (12) is connected with a power battery (15).

2. A vehicle drive mechanism according to claim 1, characterised in that a torsional damper is connected between the engine (1) and the first planetary gear set (4).

3. A vehicle drive according to claim 1, characterized in that a dual mass flywheel is connected between the engine (1) and the first planetary gear set (4).

4. A vehicle drive according to claim 3, characterized in that the rotating shaft of the engine (1) is connected to the primary of the dual mass flywheel, the secondary of which is connected to the planet carrier of the first planetary row (4).

5. A vehicle drive according to claim 1, characterized in that a transfer gear is connected to the first drive shaft (13) or the second drive shaft (14).