CN212073662U - Hybrid power system and moving tool - Google Patents
Hybrid power system and moving tool Download PDFInfo
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- CN212073662U CN212073662U CN202020185737.6U CN202020185737U CN212073662U CN 212073662 U CN212073662 U CN 212073662U CN 202020185737 U CN202020185737 U CN 202020185737U CN 212073662 U CN212073662 U CN 212073662U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The embodiment of the utility model discloses hybrid power system and removal instrument. The system comprises: the range extender subsystem is used for converting energy in other forms into electric energy, the power battery subsystem is used for storing the electric energy, the driving subsystem is used for converting the electric energy into power to output, and the whole vehicle controller is used for controlling the range extender subsystem; the range extender subsystem is electrically connected with the power battery subsystem and the driving subsystem; the power battery subsystem is electrically connected with the driving subsystem; and the vehicle control unit is electrically connected with the range extender subsystem, the power battery subsystem and the driving subsystem. Therefore, the utility model discloses avoided load distribution extremely unbalanced, improved fuel economy, reduced the pollutant, improved the travelling comfort of removal instrument.
Description
Technical Field
The utility model relates to a hybrid technical field especially relates to a hybrid system and removal instrument.
Background
With the development of technology, moving tools are widely used in daily transportation. At present, engines such as diesel engines and gasoline engines are generally used as power sources for mobile tools. The prior art takes an engine as a power source and has the following problems: (1) the matching degree of the engine power and the actual required power of the moving tool is poor, and the engine power configured by the moving tool is usually several times larger than the average working power of the moving tool, so that the load distribution is extremely unbalanced; (2) the engine is operated all the time in the whole working condition, and the engine works in a non-optimal operation interval for most of time, so that the power of the engine is excessive, the fuel economy is poor, pollutants are discharged, and the environment is greatly influenced; (3) in the whole working condition, the engine is always in a working state, so that the comfort of the moving tool is poor. Therefore, it is important to develop a power system which can avoid the extreme imbalance of load distribution, improve the fuel economy, reduce pollutants and has high comfort.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above problems, a hybrid power system and a mobile tool are provided, which are used for solving the technical problems in the prior art that the load distribution of the power system is extremely unbalanced, the fuel economy is poor, the environment is greatly affected by pollutant emission, and the comfort is poor.
In a first aspect, the present invention provides a hybrid power system, including: the range extender subsystem is used for converting energy in other forms into electric energy, the power battery subsystem is used for storing the electric energy, the driving subsystem is used for converting the electric energy into power to output, and the whole vehicle controller is used for controlling the range extender subsystem;
the range extender subsystem is electrically connected with the power battery subsystem and the driving subsystem;
the power battery subsystem is electrically connected with the driving subsystem;
and the vehicle control unit is electrically connected with the range extender subsystem, the power battery subsystem and the driving subsystem.
In one embodiment, the range extender subsystem is always operated at the most economical point where specific fuel consumption varies with load.
In one embodiment, the range extender subsystem includes an engine for converting other forms of energy into mechanical energy, a generator for converting mechanical energy into electrical energy, a range extender controller;
the engine is connected with the generator;
the generator is electrically connected with the power battery subsystem and the driving subsystem;
the range extending controller is electrically connected with the engine and the vehicle control unit.
In one embodiment, the power battery subsystem includes a rechargeable battery for storing electrical energy, a battery controller;
the battery controller is electrically connected with the rechargeable battery, the range extender subsystem and the vehicle control unit;
the rechargeable battery is electrically connected with the driving subsystem;
and the battery controller is internally provided with a battery management module for acquiring the information of the rechargeable battery and controlling the rechargeable battery to work.
In one embodiment, the drive subsystem includes a drive motor for converting electrical energy to a power output, a drive controller;
the driving controller is electrically connected with the driving motor, the power battery subsystem, the range extender subsystem and the vehicle control unit.
In one embodiment, the hybrid system further comprises a brake pedal;
the brake pedal is connected with the driving motor;
when the brake is braked, the brake pedal and the driving motor convert the energy originally consumed by the brake drum into electric energy, and then the power battery subsystem is charged by the driving controller.
In one embodiment, the range extender subsystem is electrically connected with the drive motor for directly powering the drive motor by the range extender subsystem when the demanded power is less than the generated power of the range extender subsystem.
In one embodiment, the hybrid powertrain system further includes an electric accessory power subsystem for converting electrical energy to power output to the electric accessory;
the electric accessory power subsystem is electrically connected with the power battery subsystem and the vehicle control unit.
In one embodiment, the hybrid power system further comprises an external charging interface;
the external charging interface is electrically connected with the power battery subsystem so as to enable an external power supply to charge the power battery subsystem through the external charging interface.
In one embodiment, the operation mode of the hybrid power system comprises any one of an electric only driving mode, an extended range device driving mode and a hybrid power operation mode.
In one embodiment, the pure range extender driving mode is to supply power to the driving subsystem only by using the range extender subsystem, and charge the power battery subsystem with the redundant electric energy of the range extender subsystem.
In one embodiment, the hybrid power operation mode refers to that the range extender subsystem and the power battery subsystem are adopted to supply power to the driving subsystem together;
the converted electric energy of the range extender subsystem is completely and directly provided for the driving subsystem, and the power battery subsystem calculates the power difference value between the required power and the generated power of the range extender subsystem and supplies power to the driving subsystem according to the power difference value.
In a second aspect, the present invention further provides a mobile tool, including: the hybrid system described in any one of the first aspect.
To sum up, the utility model discloses a hybrid power system the range extender subsystem with power battery subsystem reaches the drive subsystem electricity is connected, power battery subsystem with the drive subsystem electricity is connected, vehicle control unit with the range extender subsystem, power battery subsystem, drive subsystem electricity is connected to make the mode of this system include any one of pure electric drive mode, pure range extender drive mode, hybrid power mode; in the pure electric driving mode, the power battery subsystem is only adopted to supply power to the driving subsystem, and an engine is not adopted, so that the comfort of the moving tool is improved; in the pure range extender driving mode, the range extender subsystem is only adopted to supply power to the driving subsystem, redundant electric energy of the range extender subsystem is charged to the power battery subsystem, the range extender subsystem supplies power to the driving subsystem, the loss of electric energy conversion is reduced, the fuel economy is improved, and the redundant electric energy is charged to the power battery subsystem, the fuel economy is improved, and pollutants are reduced; the hybrid power working mode preferentially adopts the range extender subsystem to supply power to the driving subsystem, insufficient power is supplied by the power battery subsystem to the driving subsystem in a supplementary mode, and the range extender subsystem and the power battery subsystem are matched for power supply, so that the power generation power of the range extender subsystem and the maximum battery power of the power battery subsystem can be reduced while the power required by a mobile tool is ensured to be met, the extreme imbalance of load distribution is avoided, and the range extender subsystem supplies power to the driving subsystem, reduces the loss of electric energy conversion, improves the fuel economy and reduces pollutants. Therefore, the utility model discloses avoided load distribution extremely unbalanced, improved fuel economy, reduced the pollutant, improved the travelling comfort of removal instrument.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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.
Wherein:
FIG. 1 is a block diagram of a hybrid powertrain system according to an embodiment;
FIG. 2 is a schematic block diagram of the hybrid powertrain of FIG. 1;
FIG. 3 is a flowchart of a hybrid control method according to one embodiment;
fig. 4 is a flowchart of a hybrid control method in another embodiment.
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 only some embodiments of the present invention, not all embodiments. 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.
As shown in fig. 1 to 2, in one embodiment, there is provided a hybrid system including: the range extender system 11 is used for converting other forms of energy into electric energy, the power battery system 12 is used for storing the electric energy, the driving subsystem 13 is used for converting the electric energy into power to output, and the vehicle control unit 14 is used for controlling the vehicle to run;
the range extender subsystem 11 is electrically connected with the power battery subsystem 12 and the driving subsystem 13;
the power battery subsystem 12 is electrically connected with the driving subsystem 13;
the vehicle control unit 14 is electrically connected with the range extender subsystem 11, the power battery subsystem 12 and the driving subsystem 13.
In the hybrid power system of the embodiment, the range extender subsystem 11 is electrically connected with the power battery subsystem 12 and the driving subsystem 13, the power battery subsystem 12 is electrically connected with the driving subsystem 13, and the vehicle control unit 14 is electrically connected with the range extender subsystem 11, the power battery subsystem 12 and the driving subsystem 13, so that the working mode of the system includes any one of a pure electric driving mode, a pure range extender driving mode and a hybrid power working mode; in the pure electric driving mode, the power battery subsystem 12 is only used for supplying power to the driving subsystem 13, and the engine 111 is not used, so that the comfort of the moving tool is improved; in the pure range extender driving mode, the range extender subsystem 11 is only adopted to supply power to the driving subsystem 13, redundant electric energy of the range extender subsystem 11 is charged to the power battery subsystem 12, the range extender subsystem 11 supplies power to the driving subsystem 13, the loss of electric energy conversion is reduced, the fuel economy is improved, and the redundant electric energy is charged to the power battery subsystem 12, so that the fuel economy is improved and pollutants are reduced; the hybrid power working mode preferentially adopts the range extender subsystem 11 to supply power to the driving subsystem 13, insufficient power is supplied by the power battery subsystem 12 to the driving subsystem 13 in a supplementary mode, and the range extender subsystem 11 and the power battery subsystem 12 are matched to supply power, so that the power generation power of the range extender subsystem 11 and the maximum battery power of the power battery subsystem 12 can be reduced while the power required by a mobile tool is ensured to be met, the extreme imbalance of load distribution is avoided, the power supply of the range extender subsystem 11 to the driving subsystem 13 is reduced, the loss of electric energy conversion is reduced, the fuel economy is improved, and pollutants are reduced.
The vehicle control unit 14 is configured to analyze a driver demand, monitor a driving state of the mobile tool, coordinate operations of the control unit, and implement functions of powering on and powering off, driving control, energy recovery, accessory control, fault diagnosis, and the like of the mobile tool, and may select an HCU (hybrid power unit) from the prior art, which is not described herein again.
In one embodiment, the range extender subsystem 11 is always operated at the most economical point where specific fuel consumption varies with load. The fuel economy is further improved and pollutants are reduced by operating at the most economical point.
In another embodiment, the range extender subsystem 11 may also use any power less than or equal to the maximum generated power of the engine 111, and is not limited in this regard.
In one embodiment, the range extender subsystem 11 includes an engine 111 for converting other forms of energy into mechanical energy, a generator 112 for converting mechanical energy into electrical energy, a range extender controller 113;
the engine 111 is connected with the generator 112;
the generator 112 is electrically connected with the power battery subsystem 12 and the driving subsystem 13;
the range-extending controller 113 is electrically connected to the engine 111 and the vehicle control unit 14.
The range-extending controller 113 may be an ECU (electronic control unit) selected from the prior art, and is not specifically limited by way of example.
The engine 111 may be any machine capable of converting other forms of energy into mechanical energy, such as a diesel engine, a gasoline engine, an aircraft engine, and is not limited in this respect.
The generator 112 may be selected from the prior art as a fish motor, by way of example and not limitation.
In one embodiment, a generator 112 is integrated into the output shaft of the engine 111 to improve the integration of the range extender subsystem 11.
In one embodiment, the generator 112 is electrically connected to the power battery subsystem 12 and the drive subsystem 13 via high voltage wires, such that the generator 112 can input high voltage power to the power battery subsystem 12 and the drive subsystem 13.
In one embodiment, the range extender subsystem 11 always operates at the most economical point of specific fuel consumption changing with load, which means that the engine 111 operates at the most economical point of specific fuel consumption changing with load.
In one embodiment, the power battery subsystem 12 includes a rechargeable battery 121 for storing electrical energy, a battery controller 122;
the battery controller 122 is electrically connected with the rechargeable battery 121, the range extender subsystem 11 and the vehicle control unit 14;
the rechargeable battery 121 is electrically connected with the driving subsystem 13;
a battery management module is disposed in the battery controller 122 for collecting information of the rechargeable battery 121 and controlling the rechargeable battery 121 to work.
The rechargeable battery 121 may be a lithium battery selected from the prior art, and is not limited in this example.
The battery controller 122 may be selected from the prior art, and is not limited in this embodiment.
The battery management module may select a storage battery management system from the prior art, which is not described herein.
In one embodiment, the rechargeable battery 121 is a battery pack, so as to improve the endurance and the operation stability of the rechargeable battery 121.
In one embodiment, the drive subsystem 13 includes a drive motor 131 for converting electrical energy to a power output, a drive controller 132;
the driving controller 132 is electrically connected to the driving motor 131, the power battery subsystem 12, the range extender subsystem 11, and the vehicle control unit 14.
The driving motor 131 may be a motor selected from the prior art, which converts electric energy into power output, and this is not a specific limitation.
The driving controller 132 may be a motor controller selected from the prior art, and the motor controller controls an integrated circuit, which operates actively, to operate the motor according to the set direction, speed, angle, and response time, which is not limited in this embodiment.
In one embodiment, the hybrid system further includes a brake pedal 161;
the brake pedal 161 is connected with the driving motor 131;
when the brake is applied, the brake pedal 161 and the driving motor 131 convert the energy originally consumed by the brake drum into electric energy, and then the driving controller 132 charges the power battery subsystem 12. Specifically, when the user steps on the brake pedal 161, the energy originally consumed by the brake drum is directly transmitted to the driving motor 131 through the brake pedal 161 so as to make the driving motor 131 generate negative torque, and the electric energy generated by the driving motor 131 in the negative torque is charged to the rechargeable battery 121 through the driving controller 132, so that the abrasion to the brake drum is reduced through energy recovery, and the service life of the mobile tool is prolonged.
In one embodiment, the range extender subsystem 11 is electrically connected to the drive motor 131 for supplying power directly from the range extender subsystem 11 to the drive motor 131 when the required power is less than the generated power of the range extender subsystem 11. Through the direct electrical connection of the range extender subsystem 11 and the driving motor 131, the loss of energy conversion between the range extender subsystem 11 and the driving motor 131 is reduced, so that the fuel economy is further improved, and pollutants are reduced.
In one embodiment, the hybrid powertrain further includes an electric accessory power subsystem 15 for converting electrical energy to power output to electric accessories;
the electric accessory power subsystem 15 is electrically connected with the power battery subsystem 12 and the vehicle control unit 14.
In one embodiment, the electric accessory power subsystem 15 includes an electric accessory drive motor 151 for converting electrical energy to a power output, an electric accessory drive controller 152;
the electric accessory drive controller 152 is electrically connected to the electric accessory drive motor 151, the power battery subsystem 12, and the vehicle control unit 14.
The electric accessory drive controller 152 may be a motor controller selected from the prior art, and the motor controller controls an integrated circuit of the motor to operate according to a set direction, speed, angle, and response time by active operation, which is not specifically limited by the example herein.
The electric accessory driving motor 151 includes an electric steering pump, an electric air compressor, an electric water pump, etc., and is not specifically limited by examples herein.
In one embodiment, the electric accessory drive controller 152 is electrically connected to the rechargeable battery 121.
In one embodiment, the hybrid powertrain further includes an external charging interface 162;
the external charging interface 162 is electrically connected to the power battery subsystem 12, so that an external power source charges the power battery subsystem 12 through the external charging interface 162. The power battery subsystem 12 is charged through an external power supply, so that the power generation of the range extender subsystem 11 is reduced, the fuel economy is further improved, pollutants are reduced, and the service life of the range extender subsystem 11 is prolonged.
In one embodiment, the external charging interface 162 is electrically connected to the rechargeable battery 121.
In one embodiment, the operation mode of the hybrid power system comprises any one of an electric only driving mode, an extended range device driving mode and a hybrid power operation mode. Through switching among different working modes, the hybrid power system is suitable for different driving requirements, and therefore user experience of the hybrid power system is improved.
In one embodiment, the pure range extender driving mode is to supply power to the driving subsystem 13 only by using the range extender subsystem 11, and charge the power battery subsystem 12 with the excess power of the range extender subsystem 11. The range extender subsystem 11 supplies power to the driving subsystem 13, so that the loss of electric energy conversion is reduced, the fuel economy is improved, and the redundant electric energy is charged to the power battery subsystem 12, so that the fuel economy is improved, and pollutants are reduced.
In one embodiment, the hybrid operating mode refers to the range extender subsystem 11 and the power battery subsystem 12 being used together to supply power to the driving subsystem 13;
wherein the converted electrical energy of the range extender subsystem 11 is all directly provided to the drive subsystem 13, and the power battery subsystem 12 calculates a power difference between the required power and the generated power of the range extender subsystem 11 and supplies power to the drive subsystem 13 according to the power difference. The hybrid power working mode preferentially adopts the range extender subsystem 11 to supply power to the driving subsystem 13, insufficient power is supplied by the power battery subsystem 12 to the driving subsystem 13 in a supplementary mode, and the range extender subsystem 11 and the power battery subsystem 12 are matched to supply power, so that the power generation power of the range extender subsystem 11 and the maximum battery power of the power battery subsystem 12 can be reduced while the power required by a mobile tool is ensured to be met, the extreme imbalance of load distribution is avoided, the power supply of the range extender subsystem 11 to the driving subsystem 13 is reduced, the loss of electric energy conversion is reduced, the fuel economy is improved, and pollutants are reduced.
In one embodiment, the present invention also provides a mobile tool, comprising: the hybrid system of any one of the above;
the hybrid system includes: the range extender system 11 is used for converting other forms of energy into electric energy, the power battery subsystem 12 is used for storing the electric energy, the driving subsystem 13 is used for converting the electric energy into power to output, and the vehicle control unit 14 is used for converting the electric energy into the power to output, wherein the range extender subsystem 11 is electrically connected with the power battery subsystem 12 and the driving subsystem 13, the power battery subsystem 12 is electrically connected with the driving subsystem 13, and the vehicle control unit 14 is electrically connected with the range extender subsystem 11, the power battery subsystem 12 and the driving subsystem 13.
In the hybrid power system of the mobile tool of the embodiment, the range extender subsystem 11 is electrically connected with the power battery subsystem 12 and the driving subsystem 13, the power battery subsystem 12 is electrically connected with the driving subsystem 13, and the vehicle control unit 14 is electrically connected with the range extender subsystem 11, the power battery subsystem 12 and the driving subsystem 13, so that the working mode of the system includes any one of a pure electric driving mode, a pure range extender driving mode and a hybrid power working mode; in the pure electric driving mode, the power battery subsystem 12 is only used for supplying power to the driving subsystem 13, and the engine 111 is not used, so that the comfort of the moving tool is improved; in the pure range extender driving mode, the range extender subsystem 11 is only adopted to supply power to the driving subsystem 13, redundant electric energy of the range extender subsystem 11 is charged to the power battery subsystem 12, the range extender subsystem 11 supplies power to the driving subsystem 13, the loss of electric energy conversion is reduced, the fuel economy is improved, and the redundant electric energy is charged to the power battery subsystem 12, so that the fuel economy is improved and pollutants are reduced; the hybrid power working mode preferentially adopts the range extender subsystem 11 to supply power to the driving subsystem 13, insufficient power is supplied by the power battery subsystem 12 to the driving subsystem 13 in a supplementary mode, and the range extender subsystem 11 and the power battery subsystem 12 are matched to supply power, so that the power generation power of the range extender subsystem 11 and the maximum battery power of the power battery subsystem 12 can be reduced while the power required by a mobile tool is ensured to be met, the extreme imbalance of load distribution is avoided, the power supply of the range extender subsystem 11 to the driving subsystem 13 is reduced, the loss of electric energy conversion is reduced, the fuel economy is improved, and pollutants are reduced.
The moving means includes a port dump truck, a forklift, an automobile, a truck, a ship, an airplane, etc., and this is not a specific limitation.
In one embodiment, the moving means comprises a gearbox;
the driving subsystem 13 is connected with the gearbox and used for converting electric energy into power and outputting the power to the gearbox.
In one embodiment, the range extender subsystem 11 is always operated at the most economical point where specific fuel consumption varies with load.
In another embodiment, the range extender subsystem 11 may also use any power less than or equal to the maximum generated power of the engine 111, and is not limited in this regard.
As shown in fig. 3, in one embodiment, a hybrid control method is provided, which is applied to the hybrid system described in any one of the above;
the hybrid system includes: the range extender subsystem is used for converting energy in other forms into electric energy, the power battery subsystem is used for storing the electric energy, the driving subsystem is used for converting the electric energy into power to be output, and the vehicle control unit is electrically connected with the range extender subsystem, the power battery subsystem and the driving subsystem;
the method comprises the following steps:
s302, acquiring required power and actual stored electric quantity of the power battery subsystem;
specifically, a battery management module is arranged in a battery controller of the power battery subsystem to acquire the actual stored electric quantity of the rechargeable battery, and the battery controller sends the actual stored electric quantity to the vehicle control unit; and the vehicle control unit acquires the required power input by the user.
The requested power is the power that needs to be output to the drive subsystem and/or the electric accessory power subsystem.
The actual stored electric quantity refers to the actual electric quantity of the rechargeable battery collected by the battery management module.
S304, acquiring the power generation power of the range extender subsystem, a preset pure electric quantity threshold value and the maximum battery power of the power battery subsystem;
specifically, the battery controller obtains the power generation power of the range extender subsystem, a preset pure electric quantity threshold value and the maximum battery power of the power battery subsystem.
Optionally, the generated power of the range extender subsystem, the preset pure electric quantity threshold value and the maximum battery power of the power battery subsystem are already stored in the battery controller.
Optionally, the generated power refers to the maximum generated power of the range extender subsystem.
Optionally, the generated power refers to generated power when the range extender subsystem operates at the most economical point that specific oil consumption changes with load. The fuel economy is further improved and pollutants are reduced by operating at the most economical point.
The preset pure electric quantity threshold value is the lowest electric quantity of the pure electric driving mode.
The maximum battery power refers to the maximum power output by the power battery subsystem.
S306, determining a target power driving mode according to the required power, the actual stored electric quantity, the generated power, the preset pure electric quantity threshold value and the maximum battery power.
Specifically, the vehicle control unit determines a target power driving mode according to the required power, the actual stored electric quantity, the generated power, the preset pure electric quantity threshold value and the maximum battery power.
The method of this embodiment determines a target power driving mode according to the required power, the actual stored electric quantity, the generated power, the preset pure electric quantity threshold value and the maximum battery power, where the target power driving mode includes any one of a pure electric driving mode, a pure range extender driving mode and a hybrid power working mode; in the pure electric driving mode, the power battery subsystem is only adopted to supply power to the driving subsystem, and an engine is not adopted, so that the comfort of the moving tool is improved; in the pure range extender driving mode, the range extender subsystem is only adopted to supply power to the driving subsystem, redundant electric energy of the range extender subsystem is charged to the power battery subsystem, the range extender subsystem supplies power to the driving subsystem, the loss of electric energy conversion is reduced, the fuel economy is improved, and the redundant electric energy is charged to the power battery subsystem, the fuel economy is improved, and pollutants are reduced; the hybrid power working mode preferentially adopts the range extender subsystem to supply power to the driving subsystem, insufficient power is supplied by the power battery subsystem to the driving subsystem in a supplementary mode, and the range extender subsystem and the power battery subsystem are matched for power supply, so that the power generation power of the range extender subsystem and the maximum battery power of the power battery subsystem can be reduced while the power required by a mobile tool is ensured to be met, the extreme imbalance of load distribution is avoided, and the range extender subsystem supplies power to the driving subsystem, reduces the loss of electric energy conversion, improves the fuel economy and reduces pollutants.
As shown in fig. 4, in one embodiment, a hybrid control method is proposed, the method comprising:
s402, acquiring required power and actual stored electric quantity of the power battery subsystem;
s404, acquiring the power generation power of the range extender subsystem, a preset pure electric quantity threshold value and the maximum battery power of the power battery subsystem;
s406, when the required power is smaller than or equal to the maximum battery power and the actual stored electric quantity is larger than or equal to the preset pure electric quantity threshold value, taking a pure electric driving mode as the target power driving mode;
s408, when the required power is smaller than or equal to the maximum battery power and the actual stored electric quantity is smaller than the preset pure electric quantity threshold value, taking a pure range extender driving mode as the target power driving mode when the required power is smaller than or equal to the generating power, and taking a hybrid power working mode as the target power driving mode when the required power is larger than the generating power;
s410, when the required power is larger than the maximum battery power and the required power is smaller than or equal to the generated power, taking a pure range extender driving mode as the target power driving mode;
and S412, when the required power is larger than the maximum battery power and the required power is larger than the generated power, taking a hybrid power working mode as the target power driving mode.
According to the embodiment, the required power is compared with the maximum battery power and the generated power, and then the actual stored electric quantity is compared with the preset pure electric quantity threshold value, so that the target power driving mode is determined automatically, the user operation is reduced, and the user experience is improved.
In one embodiment, the method further comprises: acquiring a lowest electric quantity threshold and a highest electric quantity threshold of the power battery subsystem; when the actual stored electric quantity is smaller than the minimum electric quantity threshold value, controlling a range extender subsystem to start work and charging the power battery subsystem; and when the actual stored electric quantity is larger than the highest electric quantity threshold value, controlling the range extender subsystem to stop working. Through setting up minimum electric quantity threshold value, avoid power battery subsystem's actual deposit electric quantity to hang down excessively, actual deposit electric quantity hangs down the duration that influences hybrid power system excessively, influences rechargeable battery's life moreover. Through setting up the highest electric quantity threshold value, avoid rechargeable battery overcharge to rechargeable battery's life has been prolonged, can avoid increasing journey ware subsystem to do useless work moreover, further improved fuel economy, reduced the pollutant.
It should be noted that the above-mentioned hybrid system, mobile tool and hybrid control method belong to a general inventive concept, and the contents in the embodiments of the hybrid system, mobile tool and hybrid control method are mutually applicable.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (12)
1. A hybrid powertrain system, comprising: the system comprises a range extender subsystem for converting electric energy, a power battery subsystem for storing electric energy, a driving subsystem for converting the electric energy into power and outputting the power, and a vehicle control unit;
the range extender subsystem is electrically connected with the power battery subsystem and the driving subsystem;
the power battery subsystem is electrically connected with the driving subsystem;
and the vehicle control unit is electrically connected with the range extender subsystem, the power battery subsystem and the driving subsystem.
2. The hybrid powertrain system of claim 1, wherein the range extender subsystem includes an engine for converting mechanical energy, a generator for converting mechanical energy to electrical energy, a range extender controller;
the engine is connected with the generator;
the generator is electrically connected with the power battery subsystem and the driving subsystem;
the range extending controller is electrically connected with the engine and the vehicle control unit.
3. A hybrid system according to claim 1, wherein the power cell subsystem includes a rechargeable battery for storing electrical energy, a battery controller;
the battery controller is electrically connected with the rechargeable battery, the range extender subsystem and the vehicle control unit;
the rechargeable battery is electrically connected with the driving subsystem;
and the battery controller is internally provided with a battery management module for acquiring the information of the rechargeable battery and controlling the rechargeable battery to work.
4. A hybrid powertrain system as in claim 1, wherein the drive subsystem includes a drive motor for converting electrical energy to a power output, a drive controller;
the driving controller is electrically connected with the driving motor, the power battery subsystem, the range extender subsystem and the vehicle control unit.
5. The hybrid system of claim 4, further comprising a brake pedal;
the brake pedal is connected with the driving motor;
when the brake is braked, the brake pedal and the driving motor convert the energy originally consumed by the brake drum into electric energy, and then the power battery subsystem is charged by the driving controller.
6. The hybrid powertrain system of claim 4, wherein the range extender subsystem is electrically connected with the drive motor for providing power directly to the drive motor from the range extender subsystem when the demanded power is less than the generated power of the range extender subsystem.
7. The hybrid powertrain system of claim 1, further comprising an electric accessory power subsystem for converting electrical energy to power output to the electric accessory;
the electric accessory power subsystem is electrically connected with the power battery subsystem and the vehicle control unit.
8. The hybrid system of claim 1, further comprising an external charging interface;
the external charging interface is electrically connected with the power battery subsystem so as to enable an external power supply to charge the power battery subsystem through the external charging interface.
9. The hybrid system according to any one of claims 1 to 8, wherein the operation mode of the hybrid system includes any one of an electric only drive mode, an electric only range extender drive mode, and a hybrid operation mode.
10. The hybrid powertrain system of claim 9, wherein the pure range extender drive mode is to power the drive subsystem with only the range extender subsystem and to charge the power battery subsystem with excess electrical energy from the range extender subsystem.
11. The hybrid power system of claim 9, wherein the hybrid operating mode is to use the range extender subsystem and the power battery subsystem to jointly supply power to the drive subsystem;
the converted electric energy of the range extender subsystem is completely and directly provided for the driving subsystem, and the power battery subsystem calculates the power difference value between the required power and the generated power of the range extender subsystem and supplies power to the driving subsystem according to the power difference value.
12. A mobile tool, comprising: the hybrid system according to any one of claims 1 to 11.
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