CN211642156U

CN211642156U - Novel plug-in type oil-electricity hybrid power parallel system

Info

Publication number: CN211642156U
Application number: CN201922396021.0U
Authority: CN
Inventors: 郭伟伟
Original assignee: Hengyang Zhi Tram Co ltd
Current assignee: Hengyang Zhi Tram Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-09
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a novel plug-in type oil-electricity hybrid power parallel system, the utility model discloses not only possess all advantages of pure electric and still utilized the high efficiency interval of engine to carry out work, the characteristic rational utilization resource of perfect combination engine and motor has not only solved the problem that the continuous mileage is short of going, has still effectively reduced the energy consumption. The system has low cost, easy maintenance and low use cost; the speed ratio range is wide, and the engine can work in a high-efficiency range under various working conditions; the first gear is high in speed ratio, high in torque and powerful in power, and the maximum climbing gradient is larger than 30%; after the high-voltage system fails, the vehicle can still normally work and run; the oil saving rate can reach more than 50 percent.

Description

Novel plug-in type oil-electricity hybrid power parallel system

The technical field is as follows:

the utility model relates to a novel plug-in type oil-electricity hybrid power parallel system.

Background art:

at present, all large vehicle enterprises and new energy industries begin to vigorously push the pure electric vehicle, but the pure electric vehicle has great limitation due to the limitation of the performance and the price of the battery, and the driving range and the instability of the battery of the pure electric vehicle hinder the development of pure electric. The plug-in hybrid power can be charged by using a power grid, and the problem of driving range can be solved by combining an electric vehicle and a fuel vehicle, and the fuel consumption can be reduced on the basis of the fuel vehicle, so that the aims of energy conservation and emission reduction are fulfilled.

The plug-in hybrid electric bus is provided with about 50kwh of electric quantity, can run for more than 60km by purely depending on pure electric running, and starts the ISG motor to charge the power battery when the engine does not reach the optimal oil consumption range when the SOC is insufficient. Thus, there are many advantages to hybrid power: firstly, the electric vehicle has all the advantages of pure electric, and can supplement power for the power battery by utilizing leisure time or night time; if the driving range is shorter, the pure electric can completely meet the requirement of the driving range; the hybrid power is that the series connection of the engine and the motor can always enable the engine to work in a low oil consumption range, and the perfect combination of the engine and the motor can greatly reduce the emission of polluted gas. Therefore, research on hybrid power becomes an important development direction, and the patent discusses the control logic of the hybrid power working process to achieve the effects of energy conservation and emission reduction.

The invention content is as follows:

the utility model provides a novel plug-in type oil-electricity hybrid power parallel system, the problem of solution is how to select the mode "pure electric mode", "engine mode", "mix the dynamic mode" and how the engine switches over each other with the motor of vehicle.

The utility model discloses the technical scheme who adopts has:

a novel plug-in hybrid power parallel system comprises a battery management system, a hybrid controller, a gear shifting panel, a power battery, an engine, an ISG motor, an AMT gearbox, a high-voltage cabinet, a motor controller, an electric air conditioner, a differential mechanism, a CAN bus and a two-in-one device consisting of a DCDC frequency converter and a steering pump frequency converter, wherein the battery management system, the hybrid controller, the gear shifting panel, the engine, the AMT gearbox and the motor controller are connected through the CAN bus and correspondingly realize control signal transmission; the positive and negative electrodes of the power battery and the positive and negative electrodes of the electric air conditioner are correspondingly connected to the high-voltage cabinet, and the DCDC frequency converter and the steering pump frequency converter in the two-in-one mode correspondingly convert the direct current of the high-voltage cabinet into low-voltage direct current and three-phase alternating current; the motor controller is connected with the ISG motor, the DC high-voltage electricity input by the power battery is converted into three-phase alternating current by the motor controller to supply the ISG motor to work, and the mechanical energy fed back by the AMT gearbox is converted into electric energy by the ISG motor through the motor controller and is stored in the power battery.

Furthermore, a charging port is connected to the high-voltage cabinet.

Further, the differential mechanism and the AMT are connected through a connecting flange.

Furthermore, a forced charging switch and a pure electric mode switch are connected to the hybrid controller.

The utility model also provides a novel plug-in type oil-electricity hybrid power parallel system's control strategy, include:

1) in the vehicle starting stage, when the vehicle speed V is less than or equal to 25km/h, the engine of the automobile is in idle speed or stalled, and the ISG motor drives the vehicle to start alone;

2) when the vehicle speed V is more than 25km/h, if the working torque of the vehicle running exceeds 80% of the maximum torque of the engine, the ISG motor starts to work and serves as supplementary power to assist the engine to drive the vehicle;

3) when the vehicle brakes or slides, the engine is in idle speed or stops, the ISG motor is used as a generator to perform energy feedback, and the energy of the vehicle is stored in the power battery to achieve the purposes of energy recycling and energy saving;

4) when the vehicle speed is more than or equal to 45km/h and less than or equal to 50km/h, the engine drives the ISG motor to generate electricity;

5) when the SOC of the power battery is lower than 25%, when the vehicle meets the working conditions of engine starting, neutral gear returning and hand brake pulling, a forced charging switch (15) is pressed, and the hybrid controller (2) sends a negative torque command to the motor controller (10) and forcibly charges the power battery until the SOC is 75%;

6) in a congested road section and the SOC of a power battery is in a normal range, a pure electric mode switch (16) is used for forcibly switching a vehicle to a pure electric mode, an engine is flamed out in the pure electric mode, and an ISG motor drives the pure electric mode;

when the air pressure of the front air cylinder and the rear air cylinder of the vehicle is lower than 0.65Mpa, the vehicle automatically starts the engine;

when the engine is started and is only in an idling state and the SOC of the power battery is less than 25% in the pure electric operation mode, forcibly quitting the pure electric mode;

7) when the vehicle is in the benefit of the electricity, charge mouthful (14) and connect and fill electric pile and charge to the vehicle.

The SOC normal range of the power battery is 30% -75%.

The utility model discloses following beneficial effect has:

the utility model discloses not only possess all advantages of pure electronic and still utilized the high efficiency interval of engine to carry out work, perfect combination the characteristic rational utilization resource of engine and motor, not only solved the problem that the continuous mileage is short, still effectively reduced the energy consumption.

The system has low cost, easy maintenance and low use cost; the speed ratio range is wide, and the engine can work in a high-efficiency range under various working conditions; the first gear is high in speed ratio, high in torque and powerful in power, and the maximum climbing gradient is larger than 30%; after the high-voltage system fails, the vehicle can still normally work and run; the oil saving rate can reach more than 50 percent.

Description of the drawings:

fig. 1 is a schematic diagram of the system of the present invention.

Fig. 2 is an energy diagram of the system of the present invention.

In fig. 1:

1. a Battery Management System (BMS); 2. a Hybrid Controller (HCU); 3. a shift panel (SCU); 4. a power battery; 5. an engine; 6. an ISG motor; 7. an AMT gearbox; 8. a connecting flange; 9. a high voltage cabinet (PDU); 10. a Motor Controller (MCU); 11. an electric air conditioner; 12. two-in-one; 13. a differential mechanism; 14. a charging port; 15. a forced charging switch; 16. a pure electric mode switch;

fig. 3 shows the system network architecture of the present invention.

In fig. 3: SCU (shift panel); HCU (hybrid controller); TCU (transmission controller); BMS (battery management system); MCU (motor controller); OBD (standard OBD diagnostics); 120 Ω represents a termination resistance in the CAN network;

remarking: CAN1H and CAN1L are normal partial CAN network architectures, and CAN2H and CAN2L are pure partial CAN network architectures;

fig. 4 is a vehicle launch graph using the system of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 4, the utility model relates to a novel plug-in hybrid power parallel system, including battery management system 1, mix controller 2, shift panel 3, power battery 4, engine 5, ISG motor 6, AMT gearbox 7, high-voltage board 9, motor controller 10, electric air conditioner 11, differential mechanism 13, CAN bus and by DCDC converter and steering pump converter (SDCAC) two-in-one 12 of constituteing.

Battery management system 1, hybrid controller 2, shift panel 3, engine 5, AMT gearbox 7 and motor controller 10 link to each other and correspond through the CAN bus and realize control signal transmission, and engine 5 links to each other and provides the electric energy for ISG motor 6 with ISG motor 6, and ISG motor 6's output shaft links to each other with the input of AMT gearbox 7, and the output of AMT gearbox 7 links to each other with differential mechanism 13. The positive and negative poles of the power battery 4 and the positive and negative poles of the electric air conditioner 11 are correspondingly connected to the high-voltage cabinet 9, and the DCDC frequency converter and the steering pump frequency converter in the two-in-one 12 correspondingly convert the direct current of the high-voltage cabinet into low-voltage direct current and three-phase alternating current. The motor controller 10 is connected with the ISG motor 6, the motor controller 10 converts DC high-voltage electricity input by the power battery 4 into three-phase alternating current to supply the ISG motor 6 to work, and the ISG motor 6 converts mechanical energy fed back by the AMT gearbox 7 into electric energy through the motor controller 10 and stores the electric energy in the power battery 4.

The utility model provides a ISG motor both can act as the motor and work alone, also can satisfy vehicle power demand with the common drive of engine, more can regard as a generator to grab the unnecessary energy that the vehicle produced and trade for the electric energy and store in power battery.

A charging port 14 is connected to the high-voltage board 9. The differential 13 and the AMT gearbox 7 are connected through a connecting flange 8. The hybrid controller 2 is connected with a forced charging switch 15 and a pure electric mode switch 16.

It is following right the utility model discloses parallel system's control strategy carries out the detailed description, the utility model discloses the system includes:

1) engine idle speed, ISG motor drive: in the vehicle starting stage, when the vehicle speed V is less than or equal to 25km/h, the engine of the automobile is in idle speed or is shut down, and the ISG motor drives the vehicle to start alone.

2) The engine drives the ISG motor to assist: when the vehicle speed V is more than 25km/h, the clutch is combined with the engine to drive the vehicle, if the working torque of the vehicle running exceeds 80% of the maximum torque of the engine (such as climbing a slope and heavy load), the ISG motor starts to work and serves as supplementary power to assist the engine to drive the vehicle, and the engine can be in an efficient working range.

3) ISG motor power generation: when the vehicle brakes or slides, the engine is in idle speed or stops, the ISG motor is used as a generator to perform energy feedback, and the energy of the vehicle is stored in the power battery to achieve the purposes of energy recycling and energy saving.

4) The engine mainly drives the ISG motor to generate electricity: when the vehicle speed is more than or equal to 45km/h and less than or equal to 50km/h, the engine drives the ISG motor to generate power.

5) Forced charging mode: when the SOC of the power battery is lower than 25% (the forced charging mode can be executed under any SOC of the power battery), when the vehicle meets the working conditions of engine starting, neutral gear returning and hand brake pulling, the forced charging switch 15 is pressed, the HCU can control the engine to increase the engine speed, the clutch to be combined, the motor to rotate and send a negative torque command to the MCU, and the SOC of the battery is forced to be 75%. If the engine is in the off state before the forced charge switch 15 is used, the engine is automatically started and the charging is performed under all the charging conditions.

6) Pure electric mode: under the pure electric mode, in a congested road section and within 30% -75% of the SOC of a power battery, the vehicle can be forcibly switched to the pure electric mode by using the pure electric mode switch 16, the engine is flamed out in the pure electric mode, and the ISG motor drives the ISG motor. When the air pressure of the front and rear air cylinders of the vehicle is lower than 0.65Mpa, the vehicle automatically starts the engine. When the engine is started and is only in an idling state and the SOC of the power battery is less than 25% in the pure electric operation mode, forcibly quitting the pure electric mode;

7) and (3) charging mode: when the vehicle is in the benefit of the electricity, the mouth 14 that charges is connected and is filled electric pile and charge to the vehicle.

The utility model discloses do above the system control tactics, it not only possess all advantages of pure electronic still utilizes the high efficiency interval of engine to carry out work, and the characteristic rational utilization resource of perfect combination engine and motor has not only solved the problem that the continuous mileage is short, has still effectively reduced the energy consumption.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel plug-in oil-electricity hybrid power parallel system which characterized in that: comprises a battery management system (1), a hybrid controller (2), a gear shifting panel (3), a power battery (4), an engine (5), an ISG motor (6), an AMT gearbox (7), a high-voltage cabinet (9), a motor controller (10), an electric air conditioner (11), a differential mechanism (13), a CAN bus and a two-in-one unit (12) consisting of a DCDC frequency converter and a steering pump frequency converter,

the battery management system (1), the hybrid controller (2), the gear shifting panel (3), the engine (5), the AMT gearbox (7) and the motor controller (10) are connected through a CAN bus and correspondingly realize control signal transmission, the engine (5) is connected with the ISG motor (6) and provides electric energy for the ISG motor (6), an output shaft of the ISG motor (6) is connected with an input end of the AMT gearbox (7), and an output end of the AMT gearbox (7) is connected with the differential (13); the positive and negative poles of the power battery (4) and the positive and negative poles of the electric air conditioner (11) are correspondingly connected to the high-voltage cabinet (9), and a DCDC frequency converter and a steering pump frequency converter in the two-in-one (12) correspondingly convert the direct current of the high-voltage cabinet into low-voltage direct current and three-phase alternating current; the motor controller (10) is connected with the ISG motor (6), the DC high-voltage electricity input by the power battery (4) is converted into three-phase alternating current by the motor controller (10) to be supplied to the ISG motor (6) to work, and the mechanical energy fed back by the AMT gearbox (7) is converted into electric energy by the ISG motor (6) through the motor controller (10) and is stored in the power battery (4).

2. The novel plug-in hybrid parallel system of claim 1, wherein: the high-voltage cabinet (9) is connected with a charging port (14).

3. The novel plug-in hybrid parallel system of claim 1, wherein: and the differential (13) is connected with the AMT gearbox (7) through a connecting flange (8).

4. The novel plug-in hybrid parallel system of claim 1, wherein: and the hybrid controller (2) is connected with a forced charging switch (15) and a pure electric mode switch (16).