阅读说明：本技术 增程器控制方法、装置、存储介质、电子设备、车辆 (Range extender control method and device, storage medium, electronic equipment and vehicle ) 是由 高金武 刘欣 尹海 胡云峰 陈虹 于 2021-03-31 设计创作，主要内容包括：本发明适用于汽车技术领域,提供了一种增程器控制方法,所述增程器控制方法包括以下步骤：获取发动机和发电机的实时信息,其中,所述发动机的实时信息至少包括转速、转速变化率和负载,所述发电机的实时信息至少包括扭矩；根据所述发动机和发电机的实时信息,估计发动机的磨损消耗；通过发动机的负载曲线对所述磨损消耗进行补偿,以使发动机输出稳定的转速。采用本发明的增程器控制方法,能够在发动机任意工作时刻,对发动机的磨损进行估计并用负载曲线进行抵消,从而稳定发动机转速,避免发电机和发动机之间的齿轮相互撞击而产生异响,解决系统NVH问题,提高其工作稳定性。本发明还提供了增程器控制装置、增程器、存储介质、电子设备、车辆。(The invention is suitable for the technical field of automobiles, and provides a control method of a range extender, which comprises the following steps: acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque; estimating the wear consumption of the engine according to the real-time information of the engine and the generator; the wear consumption is compensated by the load curve of the engine so that the engine outputs a stable rotational speed. By adopting the range extender control method, the abrasion of the engine can be estimated and offset by using the load curve at any working time of the engine, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the NVH problem of a system is solved, and the working stability of the system is improved. The invention also provides a range extender control device, a range extender, a storage medium, electronic equipment and a vehicle.)

1. A range extender control method is characterized by comprising the following steps:

acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque;

estimating the wear consumption of the engine according to the real-time information of the engine and the generator;

the wear consumption is compensated by the load curve of the engine so that the engine outputs a stable rotational speed.

2. The range extender control method of claim 1, further comprising the steps of:

selecting an optimal working point of the engine according to the input side information of the engine and the output side information of the generator;

the input side information of the engine at least comprises an oil injection amount and a throttle angle, and the output side information of the generator at least comprises a power generation amount or power generation power.

3. The range extender control method according to claim 2, wherein the step of selecting an optimum operating point of the engine based on the input side information of the engine and the output side information of the generator includes:

defining a range extender working efficiency parameter m, wherein m = output side information of the generator/input side information of the engine;

and determining the output power of the generator in a certain range extender working efficiency parameter m, wherein the working point of the optimal rotating speed, the optimal air-fuel ratio and the minimum fuel injection quantity corresponding to the output power is the optimal working point of the engine.

4. A range extender control device, comprising:

the real-time information acquisition module is used for acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque;

the calculation module is used for estimating the wear consumption of the engine according to the real-time information of the engine and the generator;

and the compensation module is used for compensating the abrasion consumption through a load curve of the engine so as to enable the engine to output a stable rotating speed.

5. The range extender control device of claim 4, further comprising:

the optimization module is used for selecting the optimal working point of the engine according to the input side information of the engine and the output side information of the generator; the input side information of the engine at least comprises an oil injection amount and a throttle angle, and the output side information of the generator at least comprises a power generation amount or power generation power.

6. A range extender control device, comprising:

the integrated controller is used for simultaneously controlling the engine and the generator; the integrated controller can realize the range extender control method of any one of claims 1 to 3.

7. The range extender control device of claim 6, wherein said integrated controller comprises:

a storage unit for storing data;

the operation unit is bidirectionally connected with the storage unit and is used for calculating the data stored in the storage unit;

and the control unit is unidirectionally connected with the storage unit and the operation unit and is used for simultaneously controlling data transmission and data calculation between the storage unit and the operation unit.

8. A range extender, comprising:

an engine, a generator and a range extender control device as claimed in any one of claims 4 to 7.

9. A storage medium having a range extender control program stored thereon, the range extender control program, when executed, implementing the range extender control method of any one of claims 1 to 3.

10. An electronic device, characterized in that the electronic device comprises:

a processor;

a storage medium; the storage medium is stored with a range extender control program which can be executed on the processor, and when the processor executes the range extender control program, the range extender control method according to any one of claims 1 to 3 is realized.

11. A vehicle, characterized in that the vehicle is provided with a range extender as claimed in claim 8.

Technical Field

The invention belongs to the technical field of automobiles, and particularly relates to a range extender control method and device, a range extender, a storage medium, electronic equipment and a vehicle.

Background

The electric automobile is a vehicle using electric energy to drive a power motor as a power system, and has the advantages of low energy consumption, environmental protection, cleanness and the like, so that the electric automobile is more and more widely applied in life. However, the electric automobile has the defect of short endurance mileage, so that the problem of inconvenient driving is caused, and the driving experience is influenced. To solve the problem, a range extender can be installed on the electric automobile.

The range extender mainly comprises an engine and a generator. The extended range electric vehicle can be regarded as a pure electric vehicle with small capacity, a generator is additionally arranged to enable the vehicle to run and charge at the same time, when the electric quantity of the battery is insufficient, the extended range engine works to generate electricity, one part of the generated electricity is used for directly driving the motor, and the other part of the generated electricity is used for charging the storage battery. Under the operation mode of half charging and half discharging, when the electric energy of the storage battery reaches a certain upper line, the extended range engine stops working, and the battery directly drives the motor; with the lengthening of the driving time and the driving mileage, the consumption of the storage battery is larger and larger, the electric energy of the storage battery is lower than a certain lower limit, the stroke-increasing engine is started again to work, and the subsequent stroke-increasing engine is always in the cyclic working state.

In practical application, the range-extended electric automobile selects the range-extended engine with small displacement and few cylinders in consideration of the influence of the weight of the electric automobile on the driving mileage.

However, the applicant of the present invention has found that the above technical solution has at least the following disadvantages:

the stroke-increasing engine has small displacement and few cylinders, so that the rotation speed fluctuation of the stroke-increasing engine is large when the stroke-increasing engine runs by itself, and further gears between the stroke-increasing engine and the generator are easy to collide with each other to generate abnormal sound, so that the serious NVH problem is caused, the driving experience is seriously influenced, and the abrasion of a stroke-increasing device is increased.

Disclosure of Invention

The embodiment of the invention aims to provide a range extender control method, and aims to solve the problems that the rotation speed of a range extender is unstable when the range extender operates by itself due to small displacement and few cylinders of the range extender, and then gears between the range extender and a generator are easy to collide with each other to generate abnormal sound, so that the driving experience is seriously influenced, and the abrasion of the range extender is increased.

The embodiment of the invention is realized in such a way that a range extender control method comprises the following steps:

acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque;

estimating the wear consumption of the engine according to the real-time information of the engine and the generator;

the wear consumption is compensated by the load curve of the engine so that the engine outputs a stable rotational speed.

Preferably, the range extender control method further includes the steps of:

selecting an optimal working point of the engine according to the input side information of the engine and the output side information of the generator; the input side information of the engine at least comprises an oil injection amount and a throttle angle, and the output side information of the generator at least comprises a power generation amount or power generation power.

Preferably, the step of selecting an optimum operating point of the engine based on the input side information of the engine and the output side information of the generator includes:

defining a range extender working efficiency parameter m, wherein m = output side information of the generator/input side information of the engine;

and determining the output power of the generator in a certain range extender working efficiency parameter m, wherein the working point of the optimal rotating speed, the optimal air-fuel ratio and the minimum fuel injection quantity corresponding to the output power is the optimal working point of the engine.

Another object of an embodiment of the present invention is to provide a range extender control device, including:

the real-time information acquisition module is used for acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque;

the calculation module is used for estimating the wear consumption of the engine according to the real-time information of the engine and the generator;

and the compensation module is used for compensating the abrasion consumption through a load curve of the engine so as to enable the engine to output a stable rotating speed.

Preferably, the range extender control device further includes:

the optimization module is used for selecting the optimal working point of the engine according to the input side information of the engine and the output side information of the generator; the input side information of the engine at least comprises an oil injection amount and a throttle angle, and the output side information of the generator at least comprises a power generation amount or power generation power.

Another object of an embodiment of the present invention is to provide a range extender control device, including:

the integrated controller is used for simultaneously controlling the engine and the generator; the integrated controller can realize the range extender control method.

Preferably, the integrated controller includes:

a storage unit for storing data;

the operation unit is bidirectionally connected with the storage unit and is used for calculating the data stored in the storage unit;

and the control unit is unidirectionally connected with the storage unit and the operation unit and is used for simultaneously controlling data transmission and data calculation between the storage unit and the operation unit.

Another object of an embodiment of the present invention is to provide a range extender, including:

an engine, a generator and a range extender control device as defined in any one of the preceding.

It is another object of an embodiment of the present invention to provide a storage medium having a range extender control program stored thereon, which when executed implements the range extender control method described in any one of the above.

Another object of an embodiment of the present invention is to provide an electronic device, including:

a processor;

a storage medium; the storage medium stores a range extender control program executable on the processor, and the processor implements the range extender control method described in any one of the above items when executing the range extender control program.

Another object of the embodiment of the present invention is to provide a vehicle, wherein the vehicle is provided with the range extender.

The embodiment of the invention provides a range extender control method, which comprises the following steps: acquiring real-time information of an engine and a generator; the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque; estimating the wear consumption of the engine according to the real-time information of the engine and the generator; the wear consumption is compensated by the load curve of the engine so that the engine outputs a stable rotational speed. By adopting the range extender control method, the abrasion of the engine can be estimated and offset by using the load curve at any working time of the engine, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the NVH problem of a system is solved, and the working stability of the system is improved.

Drawings

Fig. 1 is a flowchart illustrating steps of a method for controlling a range extender according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating steps for optimizing the operating efficiency of the range extender according to an embodiment of the present invention;

fig. 3 is a schematic block diagram of a range extender control device according to an embodiment of the present invention;

FIG. 4 is a block diagram of an integrated controller according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a conventional range extender;

fig. 6 is a schematic structural diagram of a range extender provided in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

Example 1

In this embodiment, with reference to fig. 1, a range extender control method is provided, which includes the following steps:

acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque;

estimating the wear consumption of the engine according to the real-time information of the engine and the generator;

the wear consumption is compensated by the load curve of the engine so that the engine outputs a stable rotational speed.

In the range extender control method, the real-time information of the engine and the generator can be obtained through a series of sensors, and the embodiment does not limit the way of obtaining the information.

By adopting the range extender control method, the abrasion of the engine can be estimated and offset by using the load curve at any working time of the engine, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the NVH problem of a system is solved, and the working stability of the system is improved.

As a preferred embodiment of the present invention, with reference to fig. 1, the method for controlling a range extender further includes the following steps:

selecting an optimal working point of the engine according to the input side information of the engine and the output side information of the generator; the input side information of the engine at least comprises an oil injection amount and a throttle angle, and the output side information of the generator at least comprises a power generation amount or power generation power.

The embodiment further optimizes and improves the working efficiency of the range extender after stabilizing the rotating speed of the engine and synchronizing the rotating speeds of the range extender engine and the generator.

As a preferred embodiment of the present invention, with reference to fig. 2, the step of selecting an optimal operating point of the engine based on the input side information of the engine and the output side information of the generator includes:

defining a range extender working efficiency parameter m, wherein m = output side information of the generator/input side information of the engine;

and determining the output power of the generator in a certain range extender working efficiency parameter m, wherein the working point of the optimal rotating speed, the optimal air-fuel ratio and the minimum fuel injection quantity corresponding to the output power is the optimal working point of the engine.

Specifically, the output-side information of the generator and the input-side information of the engine may specifically be the power generation amount of the generator and the fuel injection amount of the engine, but the output-side information of the generator and the input-side information of the engine are not limited to the above-mentioned forms, and other variables or other calculation forms may be adopted. According to the working principle of the range extender, the generated energy of the generator is determined to be a fixed value, the optimal rotating speed under the output power is found, the determination index of the optimal rotating speed is to reduce the fuel injection quantity of the engine as much as possible, and the working efficiency parameter m of the range extender is improved. Furthermore, from the perspective of the range extender, under the condition that the output power of the generator is constant, the fuel injection amount is reduced, namely, the fuel consumption of the engine is reduced by controlling the engine to work at a high efficiency point.

Example 2

In this embodiment, with reference to fig. 3, a range extender control device is provided, which includes, in combination with the illustration:

the real-time information acquisition module is used for acquiring real-time information of an engine and a generator, wherein the real-time information of the engine at least comprises a rotating speed, a rotating speed change rate and a load, and the real-time information of the generator at least comprises a torque;

the calculation module is used for estimating the wear consumption of the engine according to the real-time information of the engine and the generator;

and the compensation module is used for compensating the abrasion consumption through a load curve of the engine so as to enable the engine to output a stable rotating speed.

The working flow of the range extender control device of the embodiment is as follows:

the method comprises the steps of firstly obtaining real-time information of an engine and a generator through a real-time information obtaining module, then estimating abrasion consumption of the engine through a calculating module according to the real-time information of the engine and the generator, and finally compensating the abrasion consumption through a compensating module according to a load curve of the engine so as to enable the engine to output a stable rotating speed.

By utilizing the range extender control device of the embodiment, the abrasion of the engine can be estimated and offset by using the load curve at any working moment of the engine, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the problem of NVH of a system is solved, and the working stability of the system is improved.

As a preferred embodiment of the present invention, with reference to fig. 3, the range extender control device further includes:

the optimization module is used for selecting the optimal working point of the engine according to the input side information of the engine and the output side information of the generator; the input side information of the engine at least comprises an oil injection amount and a throttle angle, and the output side information of the generator at least comprises a power generation amount or power generation power.

Specifically, in the embodiment, through the optimization module, after the engine rotation speed is stabilized, that is, the rotation speeds of the range-extended engine and the generator are synchronized, the working efficiency of the range extender is further optimized and improved.

Example 3

In this embodiment, there is provided a range extender control device comprising:

the integrated controller is used for simultaneously controlling the engine and the generator; the integrated controller can implement the range extender control method of any one of embodiments 1.

In the embodiment, the real-time information of the engine and the generator is firstly acquired through the integrated controller, then the integrated controller estimates the abrasion consumption of the engine according to the real-time information of the engine and the generator, and finally the integrated controller compensates the abrasion consumption according to the load curve of the engine so as to enable the engine to output a stable rotating speed.

By utilizing the integrated controller of the embodiment, the abrasion of the engine can be estimated and offset by using the load curve at any working moment of the engine, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the NVH problem of a system is solved, and the working stability of the system is improved.

After the above process, the integrated controller of the embodiment may further select an optimal operating point of the engine according to the input side information of the engine and the output side information of the generator, so as to improve the operating efficiency of the range extender.

As a preferred embodiment of the present invention, with reference to fig. 4, the integrated controller includes:

a storage unit for storing data;

the operation unit is bidirectionally connected with the storage unit and is used for calculating the data stored in the storage unit;

and the control unit is unidirectionally connected with the storage unit and the operation unit and is used for simultaneously controlling data transmission and data calculation between the storage unit and the operation unit.

Specifically, the memory unit may be a whole module or may be divided into two modules as shown in fig. 4. When the storage unit is two modules, the data of the engine and the generator can be stored in the two modules respectively, so that the data can be stored conveniently. The two storage units are respectively used for being connected with the engine and the generator, the operation unit and the storage units can be in two-way communication, and the control unit and the other two units are in one-way control. The illustrated structure is only for illustrating the application function of the present example, and may represent, but does not completely include, the actual structure thereof.

In this embodiment, the storage unit may include a high-speed Random Access Memory (RAM), a read-only Memory (ROM), a CACHE Memory (CACHE), or the like, or may include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory; the control unit is a command control center of the whole integrated controller and can be composed of an instruction register IR (instruction register), an instruction decoder ID (instruction decoder) and an operation controller OC (operation controller); the arithmetic unit completes the operation through a logic circuit formed by extremely tiny components of an electronic circuit, and the arithmetic unit cooperates with the control unit to complete the work.

Example 4

In this embodiment, a range extender is provided, the range extender comprising:

an engine, a generator, and the range extender control device of any one of embodiment 3.

In the conventional range extender, the engine and the generator are respectively provided with a separate controller, as shown in fig. 5. The information interaction between the two controllers needs to transmit data information through external interface equipment, and when the engine runs at a high speed, the two controllers cannot realize the rapid data transmission, namely cannot realize the cooperative control of the rotating speeds of the engine and the generator.

The range extender provided in this embodiment is shown in fig. 6, and controls the engine and the generator simultaneously through an integrated controller. When the range-extended engine works at a high speed, the integrated controller can collect, transmit and calculate data information of the engine and the generator, and further implement a series of control operations, wherein the speed of the integrated controller can meet the range-extended controller control method in any one of embodiment 1. Namely, at any working moment of the extended-range engine, the abrasion of the engine is estimated and offset by a load curve, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the NVH problem of the system is solved, and the working stability of the system is improved. After the process, the integrated controller can also select the optimal working point of the engine according to the input side information of the engine and the output side information of the generator, so that the working efficiency of the range extender is improved.

Example 5

In this embodiment, a storage medium is provided, on which a range extender control program is stored, which when executed implements the range extender control method of any one of embodiments 1.

Specifically, the range extender control method in embodiment 1 is implemented in the form of a software function and may be stored in a storage medium when being sold or used as a separate product, and the range extender control method in embodiment 1 is implemented by executing software in the storage medium when being used. The storage medium in this embodiment may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media that can store program codes.

Example 6

In this embodiment, with reference to fig. 1, an electronic device is provided, which includes:

a processor;

a storage medium; the storage medium stores a range extender control program executable on the processor, and the processor implements the range extender control method according to any one of embodiment 1 when executing the range extender control program.

Specifically, in addition to the above-described manner of directly selling and using the storage medium, it is more common to combine the storage medium with a processor to obtain an electronic device. The storage medium and the processor are in data communication via a bus, or the storage medium is directly integrated into the processor. The Processor of this embodiment may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc.

Example 7

In this embodiment, a vehicle is provided with the range extender of embodiment 4.

The vehicle of the present embodiment is a range-extended electric vehicle, and the range extender provided in embodiment 4 is installed inside the vehicle. When the vehicle runs, the abrasion of the engine can be estimated and offset by a load curve at any working time of the extended-range engine, so that the rotating speed of the engine is stabilized, abnormal sound caused by mutual impact of gears between the generator and the engine is avoided, the problem of system NVH is solved, and the working stability of the vehicle is improved. After the process, the optimal working point of the engine can be selected according to the input side information of the engine and the output side information of the generator, and therefore the working efficiency of the height indicator is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.