CN211195832U - Combined sleeve type combined configuration hybrid power system - Google Patents

Abstract

The utility model relates to a combined sleeve type combined configuration hybrid power system. The system comprises a drive unit, an energy unit and a control unit connected with each other, wherein the control unit is connected with the drive unit. The energy unit includes a power battery pack, a range extender composed of an engine and an ISG motor; the drive unit includes a drive motor, an engine, an ISG motor, a coupling sleeve, a synchronizer, a reducer and a differential. The engine and the ISG motor are connected through a combination sleeve, the ISG motor and the reducer are connected through a synchronizer, and the drive motor and the reducer are directly connected. Compared with the existing hybrid configuration technology, the utility model has the advantages of compact structure, high transmission efficiency, various energy supplementation methods, and the combined configuration can make up for the defects of various individual hybrid configurations, and the combined configuration can meet various needs. Type of vehicle power requirements.

Description

A combined-sleeve combined configuration hybrid system

technical field

The utility model relates to the technical field of automobile power systems, in particular to a combined-sleeve type combined configuration hybrid power system.

Background technique

New energy vehicles have become an important development direction of the automobile industry due to their low fuel consumption rate, less emission pollution and more energy supplementation methods. However, in view of the fact that the bottleneck of battery technology has not yet been broken through, pure electric vehicles generally have the disadvantages of short cruising range, long energy replenishment time and high manufacturing cost. Although conventional hybrid vehicles can achieve the purpose of energy saving and emission reduction, they still have the shortcomings of low energy conversion efficiency and poor emission effect.

Extended-range vehicles combine the advantages of pure electric vehicles and hybrid vehicles. Pure electric driving can meet the needs of short-distance commuting in urban areas. The extended-range mode gets rid of the problems of short cruising range and long energy replenishment time, and the engine works in real time at high efficiency. range, improving the economy and emissions of the engine.

The parallel hybrid vehicle configuration is mainly divided into five configurations: P0, P1, P2, P3, and P4 according to the placement of the motor. The main disadvantage of the P0 and P1 configuration is that the engine is still the absolute main force of power output, and The motor cannot be decoupled at all. This type of configuration can only improve the economy and power of the engine, and most of them are used as weak hybrids; although the P2 configuration has been decoupled from the engine power, due to its strict requirements on the axial size, the motor Can't make it bigger. In order to use the P2 configuration, many automobile companies choose a three-cylinder engine to balance the extra axial size, which increases the difficulty of vehicle NVH optimization; P3 and P4 are completely decoupled from the engine and gearbox, which greatly increases the use of electric motors. However, if these two configurations are used alone, the engine lacks an ISG motor, and its working area will be limited to a small range due to economical considerations.

Utility model content

The purpose of the present invention is to provide a combined sleeve type combined configuration hybrid system in order to overcome the above-mentioned defects of the prior art. The combined configuration can make up for the defects of various individual hybrid configurations, and the combined configuration can Adapt to a variety of intensities of hybrids, including weak, medium, strong, and plug-in hybrids.

The purpose of the present utility model can be achieved through the following technical solutions:

A combined-sleeve type combined configuration hybrid power system, the system includes an energy unit, a control unit and a drive unit interconnected with each other, the energy unit includes a power battery pack, an ISG motor and an engine, the drive unit includes a combined sleeve, a control unit and a drive unit. A synchronizer, a drive motor and a reducer, the ISG motor and the engine are connected through the coupling sleeve, the ISG motor and the reducer are connected through the synchronizer, the drive motor directly connected to the reducer.

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

Further, the drive unit further includes a differential gear connected with the speed reducer, and the differential gear is also connected with the wheels through the front axle.

Further, the control unit includes a vehicle controller and a drive motor controller, an ISG motor controller and a battery management controller connected thereto, the drive motor controller is connected with the drive motor, and the ISG motor controller is connected to the drive motor. The motor controller is connected with the ISG motor, and the battery management controller is connected with the power battery pack.

Further, the power battery pack is also connected to the ISG motor controller and the drive motor controller, respectively.

Further, the operation modes of the hybrid power system include: a single motor mode, a dual motor mode, a parallel mode, a range extension mode and an energy recovery mode, and the single motor mode specifically includes: the synchronizer is separated, the power battery pack The drive motor is powered to drive the vehicle alone.

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 drive motor and the ISG motor for driving.

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

Further, the range extension mode specifically includes: the synchronizer is disengaged, the coupling sleeve is engaged, and the engine drives the ISG motor to generate electricity.

Further, the energy recovery mode specifically includes: when the vehicle is actively decelerating, the synchronizer is disengaged, and the drive motor is used for energy recovery.

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

(1) The hybrid power system of the combined sleeve type combined configuration of the present invention uses a reducer to replace the transmission, which saves the layout space of the vehicle power system, reduces the difficulty of control, and saves costs;

(2) The ISG motor and the engine can be disconnected, and the ISG motor and the drive motor form a dual-motor drive mode, with strong power and low energy consumption;

(3) There are various ways of energy supplementation, which can be supplemented by refueling, external grid charging and braking recovery;

(4) The combined configuration can relatively make up for the defects of various individual configurations, and the combined configuration can be adapted to a variety of models to meet the power requirements of different models;

(5) Through the coordinated control of the combination sleeve and the synchronizer, the working mode of the power system is enriched, and the power demand and energy economy under different driving conditions are met.

Description of drawings

In order to further clarify the above and other advantages and features of the various embodiments of the present invention, a more specific description of the various embodiments of the present invention will be presented with reference to the accompanying 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 various parts shown in the drawings are exemplary, and should not be construed as a uniquely determined position or size relationship among the various parts.

FIG. 1 is a schematic structural diagram of a combined sleeve-type combined configuration hybrid power system;

Figure 2 is a schematic diagram of the energy flow in a single motor mode;

Figure 3 is a schematic diagram of the energy flow in the dual-motor mode;

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

Figure 5 is a schematic diagram of energy flow in parallel mode;

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

In the figure, 1. Vehicle controller; 2. Engine; 3. Combination sleeve; 4. ISG motor; 5. Synchronizer; 6. ISG motor controller; 7. Front axle; 8. Differential; 9. Deceleration 10. Drive motor; 11. Drive motor controller; 12. Power battery pack; 13. Battery management controller.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are a part of the embodiments of the present utility model, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Example

As shown in FIG. 1 , the present invention provides a combined-sleeve type hybrid power system. The system includes a drive unit, an interconnected energy unit and a control unit, wherein the control unit is connected to the drive unit, and the energy unit includes a power battery. Group 12, the range extender composed of the engine 2 and the ISG motor 4; the drive unit includes the drive motor 10, the ISG motor 4, the combination sleeve 3, the synchronizer 5, the reducer 9 and the differential 8, and the differential 8 also passes through the front. The shaft 7 is connected with the wheels, and the control unit includes a drive motor controller 11 , an ISG motor controller 6 , a battery management controller 13 and a vehicle controller 1 . The engine 2 and the ISG motor 4 are connected through the coupling sleeve 3 , the ISG motor 4 and the reducer 9 are connected through the synchronizer 5 , and the drive motor 10 and the reducer 9 are directly connected.

ISG motors are used to quickly start the engine, generate electricity and drive the vehicle.

ISG motor power generation specifically refers to: when the SOC is lower than the set value and the power demand is small, the combination sleeve is engaged, the synchronizer is separated, the engine is started, and the engine drives the ISG motor to generate electricity; when the SOC is lower than the set value and the power demand is large, the combination sleeve Engaged, the synchronizer is engaged, the engine starts + the drive motor drives the vehicle, and the ISG motor generates electricity.

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

The vehicle controller communicates with the battery management controller and the control unit respectively.

According to the driving conditions, the system can achieve a variety of working modes by coordinating the control of various components, including:

Single motor mode: when the synchronizer is separated, the combined sleeve is separated, and the vehicle is driven by the driving motor alone;

Dual motor mode: When the synchronizer is engaged, the coupling sleeve is disengaged, and the vehicle is driven by the drive motor and the ISG motor together;

Range extension mode: When the coupling sleeve is engaged, the synchronizer is separated, and the engine drives the ISG motor to generate electricity;

Parallel mode: When the synchronizer is engaged and the coupling sleeve is engaged, the engine, ISG motor and drive motor drive the vehicle at the same time;

Energy recovery mode: When the vehicle actively decelerates, the motor performs energy recovery.

Figures 2 and 3 show pure electric drive. At this time, the battery SOC is higher than the set value. When driving normally, the system adopts a single motor drive. When the power demand is large, the ISG motor intervenes to drive the vehicle together with the drive motor.

Figure 4 shows the extended range mode, when the battery SOC is lower than the set value and the power demand is small, the system switches to this mode. In this mode, combined with the sleeve engagement, 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 schematic diagram of its energy flow is shown in Figure 4.

Figure 5 shows the parallel mode, when the demand torque is large, the system switches to this mode. In this mode, the combination sleeve is engaged, the synchronizer is engaged, and the engine, the ISG motor, and the drive motor work together to drive the vehicle. The schematic diagram of its energy flow is shown in Figure 5.

Figure 6 shows the braking energy recovery mode, which the system switches to when the vehicle is actively decelerating. In this mode, the synchronizer is separated, and the kinetic energy generated by braking is converted into electric energy by the drive motor and charges the power battery pack, thereby realizing braking energy recovery. The schematic diagram of its energy flow is shown in Figure 6.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent modifications or replacements should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (5)

1. A combined-sleeve type combined configuration hybrid power system, characterized in that the system comprises an energy unit, a control unit and a drive unit interconnected with each other, the energy unit comprising a power battery pack, an ISG motor and an engine, the The drive unit includes a coupling sleeve, a synchronizer, a driving motor and a reducer, the ISG motor and the engine are connected through the coupling sleeve, and the ISG motor and the reducer are connected through the synchronizer. connected, the drive motor is directly connected to the reducer. 2 . The hybrid power system according to claim 1 , wherein the power battery pack, the ISG motor and the engine form a range extender. 3 . 3 . The combined power system of claim 1 , wherein the drive unit further comprises a differential gear connected with the speed reducer, the differential gear further comprising: 4 . Connected to the wheels via the front axle. 4 . The combined-sleeve type hybrid power system according to claim 1 , wherein the control unit comprises a vehicle controller and a drive motor controller, an ISG motor controller and an ISG motor controller connected thereto. 5 . A battery management controller, the drive motor controller is connected with the drive motor, the ISG motor controller is connected with the ISG motor, and the battery management controller is connected with the power battery pack. 5 . The hybrid power system according to claim 4 , wherein the power battery pack is further connected to the ISG motor controller and the drive motor controller, respectively. 6 .

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