CN211195832U

CN211195832U - Combined sleeve type combined configuration hybrid power system

Info

Publication number: CN211195832U
Application number: CN201922185148.8U
Authority: CN
Inventors: 韩志玉; 高晓杰; 余卓平; 陈辛波; 冯坚
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-07
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to a combine shell type combination configuration hybrid power system, the system includes drive unit and interconnect's energy unit and the control unit, and wherein the control unit links to each other with drive unit. The energy unit comprises a range extender consisting of a power battery pack, an engine and an ISG motor; the driving unit comprises a driving motor, an engine, an ISG motor, a combination sleeve, a synchronizer, a speed reducer and a differential mechanism. The engine is connected with the ISG motor through a combination sleeve, the ISG motor is connected with the speed reducer through a synchronizer, and the driving motor is directly connected with the speed reducer. Compared with the prior hybrid configuration technology, the utility model discloses compact structure, high, the energy replenishment mode is various, the combination configuration can compensate the defect of various independent hybrid configurations to this combination configuration can satisfy polytype vehicle power demand.

Description

Combined sleeve type combined configuration hybrid power system

Technical Field

The utility model belongs to the technical field of the automotive power system technique and specifically relates to a combine shell type combination configuration hybrid power system is related to.

Background

The new energy automobile has the characteristics of low fuel consumption rate, less emission pollution, more energy supplement modes and the like, and is an important development direction of the automobile industry. However, in view of the current technical bottleneck of the battery not being broken through, the pure electric vehicle generally has the defects of short endurance mileage, long energy supplement time, high manufacturing cost and the like. Although the conventional hybrid electric vehicle can achieve the purposes of energy conservation and emission reduction, the defects of low energy conversion efficiency and poor emission effect still exist.

The range-extended automobile integrates the advantages of a pure electric automobile and a hybrid electric automobile, the pure electric driving can meet the short-distance commuting requirement in urban areas, the range-extended mode is free from the problems of short endurance mileage and long energy supplement time, meanwhile, the engine works in a high-efficiency interval in real time, and the economical efficiency and the emission performance of the engine are improved.

The parallel hybrid electric vehicle is mainly divided into five configurations of P0, P1, P2, P3 and P4 according to the placement position of the motor, the main defects of the configurations of P0 and P1 are that the engine is still used as the absolute main power of power output, the motor is not decoupled at all, and the configurations only can improve the economy and the power performance of the engine and are mostly used as weak mixing; the P2 configuration, while already decoupled from the engine power, cannot be made large due to its stringent axial size requirements. In order to use the P2 configuration, a plurality of automobile enterprises select a three-cylinder engine to balance the extra axial size, so that the NVH optimization difficulty of the vehicle is increased; the P3 and the P4 are completely decoupled with the engine and the gearbox, so that the use scenes of the motor are greatly increased. However, if these two configurations are used alone, the engine lacks an ISG motor, and its operating region is limited to a small range in consideration of economy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combine shell type combination configuration hybrid power system in order to overcome the defect that above-mentioned prior art exists, adopt combination configuration can compensate the defect of various independent hybrid configurations to combination configuration can adapt to the mixing of multiple intensity and move, mix including weak, well, mix by force, insert the electricity and mix.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a combine shell type combination configuration hybrid power system, this system includes interconnect's energy unit, the control unit and drive unit each other, the energy unit includes power battery group, ISG motor and engine, the drive unit includes combination cover, synchronous ware, driving motor and reduction gear, the ISG motor with pass through between the engine the combination cover is connected, the ISG motor with pass through between the reduction gear the synchronous ware is connected, driving motor with the reduction gear directly links.

Further, the power battery pack, the ISG motor and the engine form a range extender.

Furthermore, the driving unit further comprises a differential connected with the speed reducer, and the differential is further connected with wheels through a front shaft.

Further, the control unit comprises a vehicle control unit, and a driving motor controller, an ISG motor controller and a battery management controller which are connected with the vehicle control unit, wherein the driving motor controller is connected with the driving motor, the ISG motor controller is connected with the ISG motor, and the battery management controller is connected with the power battery pack.

Furthermore, the power battery pack is also respectively connected with the ISG motor controller and the driving motor controller.

Further, the operation modes of the hybrid system include: the system comprises a single motor mode, a double motor mode, a parallel mode, a range extending mode and an energy recovery mode, wherein the single motor mode specifically comprises the following steps: the synchronizer is separated, and the power battery pack supplies power to the driving motor to drive the vehicle independently.

Further, the dual-motor mode specifically includes: the synchronizer is engaged, the coupling sleeve is disengaged, and the power battery pack simultaneously supplies power to the driving motor and the ISG motor to drive.

Further, the parallel mode specifically includes: the synchronizer is engaged, the coupling sleeve is engaged, and the engine, the ISG motor and the driving motor simultaneously participate in direct-drive vehicles.

Further, the range extending mode specifically includes: the synchronizer is separated, the combination sleeve is connected, and the engine drives the ISG motor to generate power.

Further, the energy recovery mode specifically includes: when the vehicle is actively decelerated, the synchronizer is separated, and energy is recovered by using the driving motor.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the combined sleeve type combined configuration hybrid power system of the utility model uses the speed reducer to replace the speed changer, thereby saving the arrangement space of the power system of the whole vehicle, reducing the control difficulty and saving the cost;

(2) the ISG motor and the engine can be disconnected, the ISG motor and the driving motor form a dual-motor driving mode, and the power performance is strong and the energy consumption is low;

(3) the energy supplement mode is various, and the energy supplement can be carried out through refueling, external power grid charging and brake recovery;

(4) the combined configuration can relatively make up the defects of various single configurations, and the combined configuration can be adapted to various vehicle types to meet the power requirements of different vehicle types;

(5) through the coordination control of the combination sleeve and the synchronizer, the working modes of the power system are enriched, and the power requirements and the energy economy under different running conditions are met.

Drawings

To further clarify the above and other advantages and features of various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. Also, the relative positions and sizes of the respective portions shown in the drawings are exemplary, and should not be understood as uniquely determining positional or dimensional relationships between the respective portions.

FIG. 1 is a schematic structural diagram of a hybrid power system incorporating a nested configuration;

FIG. 2 is a schematic energy flow diagram in the single motor mode;

FIG. 3 is a schematic energy flow diagram for the dual motor mode;

FIG. 4 is a schematic energy flow diagram for the extended range mode;

FIG. 5 is a schematic diagram of the energy flow in parallel mode;

FIG. 6 is a schematic energy flow diagram in an energy recovery mode;

in the figure, 1, a vehicle control unit; 2. an engine; 3. a coupling sleeve; 4. an ISG motor; 5. a synchronizer; 6. an ISG motor controller; 7. a front axle; 8. a differential mechanism; 9. a speed reducer; 10. a drive motor; 11. a drive motor controller; 12. a power battery pack; 13. a battery management controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the 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 shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1, the utility model provides a combined sleeve type combined configuration hybrid power system, which comprises a driving unit, and an energy unit and a control unit which are connected with each other, wherein the control unit is connected with the driving unit, and the energy unit comprises a power battery pack 12, an engine 2 and a range extender composed of an ISG motor 4; the driving unit comprises a driving motor 10, an ISG motor 4, a combination sleeve 3, a synchronizer 5, a speed reducer 9 and a differential mechanism 8, the differential mechanism 8 is further connected with wheels through a front shaft 7, and the control unit comprises a driving motor controller 11, an ISG motor controller 6, a battery management controller 13 and a whole vehicle controller 1. The engine 2 is connected with the ISG motor 4 through the combination sleeve 3, the ISG motor 4 is connected with the speed reducer 9 through the synchronizer 5, and the driving motor 10 is directly connected with the speed reducer 9.

The ISG motor is used for quickly starting the engine, generating power and driving the vehicle.

The ISG motor power generation specifically refers to: when the SOC is lower than a set value and the power demand is small, the combination sleeve is connected, the synchronizer is separated, the engine is started, and the engine drives the ISG motor to generate power; when the SOC is lower than a set value and the power demand is large, the combination sleeve is connected, the synchronizer is connected, the engine is started, the driving motor drives the vehicle, and the ISG motor generates power.

The external charger is connected with the battery management controller, and can charge the power battery pack through an external power grid.

And the vehicle control unit is respectively communicated with the battery management controller and the control unit.

This system can realize multiple mode according to driving condition through each part of coordinated control, includes:

single motor mode: when the synchronizer is separated and the combination sleeve is separated, the vehicle is driven by the driving motor independently;

dual-motor mode: when the synchronizer is engaged, the combination sleeve is separated, and the vehicle is driven by the driving motor and the ISG motor together;

a range extending mode: when the combination sleeve is jointed, the synchronizer is separated, and the engine drives the ISG motor to generate electricity;

parallel mode: when the synchronizer is jointed and the combination sleeve is jointed, the engine, the ISG motor and the driving motor drive the vehicle at the same time;

energy recovery mode: when the vehicle is actively decelerated, the motor performs energy recovery.

Fig. 2 and 3 are pure electric driving, the battery SOC is higher than a set value, the system is driven by a single motor during normal driving, and the ISG motor is involved in driving the vehicle together with the driving motor when the power demand is large.

FIG. 4 is a range extended mode to which the system switches when the battery SOC is below a set point and power demand is low. In this mode, the coupling sleeve is engaged, the synchronizer is disengaged, and the ISG motor converts the kinetic energy of the engine into electrical energy to charge the power battery pack. The energy flow diagram is shown in fig. 4.

Fig. 5 shows the parallel mode to which the system switches when the required torque is large. In this mode, the coupling sleeve is engaged, the synchronizer is engaged, and the engine, the ISG motor, and the drive motor drive the vehicle together. The energy flow diagram is shown in fig. 5.

FIG. 6 is a braking energy recovery mode to which the system switches when the vehicle is actively decelerating. In the mode, the synchronizer is separated, and kinetic energy generated by braking is converted into electric energy through the driving motor and charges the power battery pack, so that braking energy recovery is realized. The energy flow diagram is shown in fig. 6.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The combined sleeve type combined configuration hybrid power system is characterized by comprising an energy unit, a control unit and a driving unit which are mutually connected, wherein the energy unit comprises a power battery pack, an ISG (integrated starter generator) motor and an engine, the driving unit comprises a combined sleeve, a synchronizer, a driving motor and a speed reducer, the ISG motor is connected with the engine through the combined sleeve, the ISG motor is connected with the speed reducer through the synchronizer, and the driving motor is directly connected with the speed reducer.

2. The hybrid power system of claim 1, wherein the power battery pack, the ISG motor and the engine form a range extender.

3. The hybrid system of claim 1, wherein the drive unit further comprises a differential connected to the speed reducer, and the differential is further connected to the wheels through a front axle.

4. The hybrid power system of claim 1, wherein the control unit comprises a vehicle control unit, and a driving motor controller, an ISG motor controller and a battery management controller connected thereto, the driving motor controller is connected to the driving motor, the ISG motor controller is connected to the ISG motor, and the battery management controller is connected to the power battery pack.

5. The hybrid power system with combined sleeve type combined configuration as claimed in claim 4, wherein the power battery pack is further connected with the ISG motor controller and the driving motor controller respectively.