A hybrid power system and adjustment method

Abstract

The invention discloses a hybrid power system and adjustment method, which relates to the field of vehicle drive technology. The invention includes: a dual-shaft motor, an engine, a gearbox and a rear axle; the output end of the engine is connected to the input end of the gearbox; the two side shafts of the dual-shaft motor are respectively connected to the output end of the gearbox and the rear axle; the hybrid power system adjusts the dual-shaft motor, the engine and the gearbox to provide power to the rear axle according to the power demand and vehicle environment of the vehicle. The output transmission shaft of the fuel engine gearbox is designed as a dual-shaft motor, and the engine and the dual-shaft motor can be used to drive the rear axle at the same time, providing double power to the rear axle of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle driving technology, and in particular to an oil-electric hybrid power system and an adjustment method. Background Art

[0002] Extended-range hybrid systems are generally used in light gasoline vehicles such as the Laotoule, and are difficult to be used well in heavy-duty diesel trucks. The main reason is that the operating conditions of heavy-duty diesel trucks are mainly long-distance transportation, which consumes electricity very quickly. The engine group configured in the system generally uses a differential range extender, that is, the power of the generator is less than the power of the motor. The power required by the motor is provided by the generator and the battery. If the battery power is completely consumed, the generator can only provide a small amount of power, which makes the vehicle's power performance worse and cannot meet the needs of heavy-load long-distance transportation.

[0003] Therefore, there is an urgent need for a hybrid power system. Summary of the invention

[0004] The present invention provides an oil-electric hybrid power system, which solves the problems of the prior art.

[0005] In a first aspect, the present invention provides an oil-electric hybrid power system, comprising: a dual-axle electric motor, an engine, a gearbox and a rear axle; The output end of the engine is connected to the input end of the gearbox; the rotating shafts on both sides of the double-output shaft motor are connected to the output end of the gearbox and the rear axle respectively; The hybrid power system adjusts the dual-axle motor, engine, and gearbox to provide power to the rear axle according to the power demand and vehicle environment of the vehicle.

[0006] Furthermore, it includes the vehicle's power demand state 1: when the vehicle needs great power at the start-up stage, the engine and the dual-axle motor work simultaneously to provide power for the rear axle.

[0007] Furthermore, the vehicle power demand state 2 is included: when the vehicle is traveling on a highway, the dual-axle motor does not work, and the engine works to provide high-speed and low-torque power to the rear axle.

[0008] Furthermore, the vehicle's power demand state 3 is included: when the vehicle is traveling at a low speed, the engine does not work, and the dual-axle electric motor works to provide low-speed, high-torque power to the rear axle.

[0009] Further, it includes adjusting according to state 4 of the vehicle environment: after the vehicle battery is exhausted, the rear axle is driven by the engine.

[0010] Furthermore, it includes adjustment according to the state 5 of the vehicle environment: when the vehicle environment cannot meet the engine starting requirements in a cold environment, the dual-output shaft motor works to complete the starting drive and drives the engine to rotate, so that the engine gradually heats up to a temperature environment where it can be started.

[0011] In a second aspect, the present invention provides a hybrid power adjustment method, which is implemented based on any hybrid power system described in the first aspect, wherein the hybrid power system adjusts the vehicle power strategy according to the power demand of the vehicle and the vehicle environment, and specifically includes: S1. Collect vehicle environment data; Including collecting temperature data of the vehicle environment and battery power data; S2, judging whether the vehicle startup meets the temperature data requirements, and selecting the engine or the dual-axle motor to drive the vehicle; When the vehicle environment cannot meet the engine starting requirements in a cold environment, the dual-axle motor works to complete the starting drive and drives the engine to rotate until the engine gradually heats up to a temperature environment that can be started; It is determined that the vehicle startup meets the temperature data requirements and the engine is working to complete the start-up drive; S3. Monitor vehicle operation data and vehicle driving status data and analyze vehicle power requirements, including: Vehicle power demand state 1: When the vehicle needs a lot of power at the start stage, the engine and the dual-axle motor work simultaneously to provide power to the rear axle; Vehicle power demand state 2: When the vehicle is traveling on the highway, the dual-axle motor does not work, and the engine works to provide high-speed and low-torque power to the rear axle; Vehicle power demand state 3: When the vehicle is traveling at a low speed, the engine does not work, and the dual-axle motor works to provide low-speed torque power for the rear axle; S4. Continue to monitor the vehicle power data in steps S1, S2, and S3, and adjust according to the state 4 of the vehicle environment: after the vehicle battery is exhausted, the rear axle is driven by the engine.

[0012] Beneficial effects of the present invention: The invention designs the output transmission shaft of the fuel engine gearbox into a double-output shaft motor, and can use the engine and the double-output shaft motor to drive the rear axle simultaneously, thereby providing double power for the rear axle of the vehicle.

[0013] The present invention uses a solution that makes minimal changes to fuel vehicles to achieve oil-electric hybrid power, so that the main engine manufacturer does not need to make too much modification in the industrialization of the vehicle, it is simple to implement and saves the cost of large-scale changes to the production line; The present invention improves the power performance of heavy vehicles and avoids the dilemma of limited import of ultra-high power engines; The present invention solves the problem of the difficulty in the initial start of diesel vehicles in cold areas. The present invention solves the difficulty of heavy-duty transport vehicles being unable to be electrified and solves the mileage concerns of pure electric heavy trucks. The invention reduces the emission pollution of heavy trucks.

[0014] The hybrid power system of the present invention can be applied to all vehicles that drive the rear axle through a transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 A schematic diagram of the structure of an oil-electric hybrid power system provided by an exemplary embodiment of the present invention.

[0016] Figure 2 A flow chart of a hybrid power system provided for an exemplary embodiment of the present invention.

[0017] Figure numerals: 1. dual-axle electric motor; 2. engine; 3. gearbox; 4. rear axle. DETAILED DESCRIPTION

[0018] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0019] The oil-electric hybrid system existing in the background technology cannot avoid the problem that diesel vehicles are difficult to start for the first time in cold environments and pure electric vehicles are not durable enough in bad road conditions. Therefore, the present invention is conceived to provide an oil-electric hybrid system, including a dual-axle motor, an engine, a gearbox and a rear axle; the output end of the engine is connected to the input end of the gearbox; the two side shafts of the dual-axle motor are respectively connected to the output end of the gearbox and the rear axle. When the vehicle needs a large power at the starting stage, the engine and the dual-axle motor work at the same time to provide power for the rear axle. When the vehicle is traveling on a highway, the dual-axle motor does not work, and the engine works to provide high-speed and low-torque power to the rear axle. When the vehicle is traveling at a low speed, the engine does not work, and the dual-axle motor works. Preferably, after the vehicle battery is exhausted, the rear axle is driven by the engine. When it is difficult for the vehicle to start by the engine in a cold environment, the dual-axle motor works to complete the starting drive and drive the engine to rotate at the same time, so that the engine gradually heats up to a temperature environment that can be started.

[0020] The specific application scenario of the present invention is vehicle driving technology.

[0021] The present invention provides an oil-electric hybrid power system and an adjustment method, aiming to solve the above technical problems in the prior art.

[0022] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0023] Example 1: Figure 1 As shown, a hybrid power system proposed by the present invention includes a dual-axle motor 1, an engine 2, a gearbox 3 and a rear axle 4; the output end of the engine 2 is connected to the input end of the gearbox 3; the rotating shafts on both sides of the dual-axle motor 1 are respectively connected to the output end of the gearbox 3 and the rear axle 4. When the vehicle needs a large power at the starting stage, the engine 2 and the dual-axle motor 1 work simultaneously to provide power to the rear axle 4. When the vehicle is traveling on a highway, the dual-axle motor 1 does not work, and the engine 2 works to provide high-speed and low-torque power to the rear axle 4. When the vehicle is traveling at a low speed, the engine 2 does not work, and the dual-axle motor 1 works. After the battery of the vehicle is exhausted, the rear axle is driven by the engine 2. When the vehicle is difficult to start by the engine 2 in a cold environment, the dual-axle motor 1 works to complete the starting drive and drive the engine 2 to rotate, so that the engine gradually heats up to a temperature environment that can be started. The present invention designs the output transmission shaft of the fuel engine gearbox into a dual-axle motor 1, and the engine 2 plus the dual-axle motor 1 can be used to drive the rear axle 4 at the same time, providing double power for the rear axle of the vehicle. The solution of minimal modification to fuel vehicles is adopted to realize oil-electric hybrid power, so that the main engine factory does not need to make too much modification in the industrialization of the vehicle, which is simple to implement and saves the cost of large-scale modification of the production line; it improves the power performance of heavy-duty vehicles and avoids the dilemma of limited import of ultra-high-power engines; it solves the problem of the difficulty of initial start-up of diesel vehicles in cold areas, solves the difficulty of heavy-duty transport vehicles being unable to be electrified, solves the mileage concerns of pure electric heavy trucks, and reduces the emission pollution of heavy trucks. In addition, the oil-electric hybrid power system can be applied to all vehicles that drive the rear axle through the transmission shaft.

[0024] Example 2: Figure 2 As shown, based on the first embodiment, a hybrid power adjustment method is implemented, which adjusts the vehicle power strategy according to the vehicle power demand and vehicle environment, specifically including: S1. Collect vehicle environment data; Including collecting temperature data and power data of the vehicle environment; S2, judging whether the vehicle startup meets the temperature data requirements, and selecting the engine or the dual-axle motor to drive the vehicle; When the vehicle environment cannot meet the engine starting requirements in a cold environment, the dual-axle motor works to complete the starting drive and drives the engine to rotate until the engine gradually heats up to a temperature environment that can be started; It is determined that the vehicle startup meets the temperature data requirements and the engine is working to complete the start-up drive; S3. Monitor vehicle operation data and vehicle driving status data and analyze vehicle power requirements, including: Vehicle power demand state 1: When the vehicle needs a lot of power at the start stage, the engine and the dual-axle motor work simultaneously to provide power to the rear axle; Vehicle power demand state 2: When the vehicle is traveling on the highway, the dual-axle motor does not work, and the engine works to provide high-speed and low-torque power to the rear axle; Vehicle power demand state 3: When the vehicle is traveling at a low speed, the engine does not work, and the dual-axle motor works to provide low-speed torque power for the rear axle; S4. Continue to monitor the vehicle power data in steps S1, S2, and S3, and adjust according to the state 4 of the vehicle environment: after the vehicle battery is exhausted, the rear axle is driven by the engine.

[0025] In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0026] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0027] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0028] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0029] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods or systems. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects.

[0030] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0031] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

[0032] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention is indicated by the claims above.

[0033] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A hybrid power system, characterized in that: include: A dual-axle electric motor (1), an engine (2), a gearbox (3) and a rear axle (4); The output end of the engine (2) is connected to the input end of the gearbox (3); the rotating shafts on both sides of the double-output shaft motor (1) are respectively connected to the output end of the gearbox (3) and the rear axle (4); The hybrid power system adjusts the dual-axle motor (1), the engine (2) and the gearbox (3) to provide power to the rear axle (4) according to the power demand of the vehicle and the vehicle environment.

2. The hybrid power system according to claim 1, characterized in that: The vehicle power demand state 1 includes: when the vehicle needs a large power at the starting stage, the engine (2) and the dual-axle motor (1) work simultaneously to provide power to the rear axle (4).

3. The hybrid power system according to claim 1, characterized in that: The vehicle power demand state 2 includes: when the vehicle is traveling on a highway, the dual-axle motor (1) does not work, and the engine (2) works to provide high-speed and low-torque power to the rear axle (4).

4. The hybrid power system according to claim 1, characterized in that: The vehicle power demand state 3 includes: when the vehicle is traveling at a low speed, the engine (2) does not work, and the dual-axle motor (1) works to provide low-speed torque power to the rear axle (4).

5. The hybrid power system according to claim 1, characterized in that: The method comprises adjusting according to the state 4 of the vehicle environment: after the battery of the vehicle is exhausted, the rear axle (4) is driven by the engine (2).

6. The hybrid power system according to claim 1, characterized in that: The method comprises adjusting according to the state 5 of the vehicle environment: when the vehicle environment cannot meet the starting requirements of the engine (2) in a cold environment, the dual-output shaft motor (1) works to complete the starting drive and drives the engine (2) to rotate, so that the engine (2) gradually heats up to a temperature environment capable of starting.

7. A hybrid power adjustment method, characterized in that: A hybrid electric power system is implemented based on any one of claims 1 to 6, wherein the hybrid electric power system adjusts the vehicle power strategy according to the vehicle power demand and vehicle environment, specifically including: S1. Collect vehicle environment data; Including collecting temperature data of vehicle environment and battery pack power data; S2, determining whether the vehicle startup meets the temperature data requirements, and selecting the engine (2) or the dual-axle motor (1) to drive the vehicle; When the vehicle environment in which the engine (2) needs to start cannot be met in a cold environment, the dual-shaft motor (1) works to complete the starting drive and simultaneously drives the engine (2) to rotate until the engine (2) gradually heats up to a temperature environment in which it can be started; It is determined that the vehicle startup meets the temperature data requirement, and the engine (2) is operated to complete the start-up drive; S3. Monitor vehicle operation data and vehicle driving status data and analyze vehicle power requirements, including: Vehicle power demand state 1: When the vehicle needs a large power at the starting stage, the engine (2) and the dual-axle motor (1) work simultaneously to provide power to the rear axle (4); Vehicle power demand state 2: when the vehicle is traveling on a highway, the dual-axle motor (1) does not work, and the engine (2) works to provide high-speed and low-torque power to the rear axle (4); Vehicle power demand state 3: when the vehicle is traveling at a low speed, the engine (2) does not work, and the dual-axle motor (1) works to provide low-speed torque power to the rear axle (4); S4, continuously monitoring the vehicle power data in steps S1, S2, and S3, and adjusting according to the state 4 of the vehicle environment: after the vehicle battery power is exhausted, the rear axle (4) is driven by the engine (2).

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