CN107554314A - A kind of novel efficient distance increasing unit for vehicle - Google Patents

Abstract

The invention discloses a novel high-efficiency range extender for vehicles, belonging to the field of range extenders for vehicles; specifically including: a vehicle controller, a drive motor controller, a vehicle drive system, a drive motor, a power battery, and a motor Controller, permanent magnet synchronous motor, dual-rotor engine and engine ECU; the initial permanent magnet synchronous motor is used as a starter to drive the dual-rotor engine into operating conditions; when the dual-rotor engine is started, the motor controller controls the permanent magnet synchronous motor to stop rotating , the permanent magnet synchronous motor is used as a generator and driven by the dual-rotor engine to generate electricity, and the generated electric energy is rectified and filtered by the motor controller to directly charge the power battery; the vehicle controller is used to receive feedback information from all control systems and make control decisions. The range extender of the present invention is small in size, light in weight, simple and compact in structure, saves cost and space, has more flexible and simple control, and can efficiently increase the mileage of electric vehicles.

Description

A new high-efficiency range extender for vehicles

technical field

The invention belongs to the field of range extenders used in today's vehicles, and in particular relates to a novel high-efficiency range extender for vehicles.

Background technique

Under the severe situation of global energy and environmental problems, the automobile industry is facing great challenges, and technological changes in energy saving and emission reduction are imminent. At present, energy-saving and new energy vehicles have become the strategic focus of national science and technology development; among them, electric vehicles have attracted much attention as the main technical solution. Compared with traditional vehicles, today's pure electric vehicles still have difficult problems such as short driving range, long charging time, and high battery cost. To solve these problems, range extenders have emerged as a solution.

The combination of the range extender and the pure electric vehicle solves the problem that the electric vehicle cannot run due to lack of power and has trouble charging. When the on-board battery is short of power, it can drive the electric vehicle and charge the battery without parking, which greatly expands the range of activities of the electric vehicle, and truly achieves continuous driving without mileage restrictions. As long as there is a gas station, it can reach any place. place. More importantly, an electric vehicle equipped with an electric vehicle range extender can extend the service life of the battery and greatly reduce the cost of battery use.

However, the existing range extenders for engine generator sets still have deficiencies. For example, the piston reciprocating gasoline and diesel engine types have problems such as high weight, large volume, and large requirements for installation space, and the gas turbine type has large fuel consumption, low usability, and Low reliability, high operation and maintenance costs, etc., so the optimal matching of the performance of the electric vehicle range extender needs to be further improved.

Contents of the invention

Aiming at the above problems, the present invention proposes a novel high-efficiency range extender for vehicles.

The range extender includes: a vehicle controller, a drive motor controller, a vehicle drive system, a drive motor, a power battery, a motor controller, a permanent magnet synchronous motor, a dual-rotor engine and an engine ECU;

The vehicle controller is connected to the engine ECU to receive feedback information from all control systems and make control decisions.

The engine ECU is connected to the dual-rotor engine, the dual-rotor engine is connected to the permanent magnet synchronous motor, the permanent magnet synchronous motor is connected to the motor controller, the motor controller is connected to the vehicle controller and the power battery at the same time, and the power battery is connected to the vehicle controller and the drive motor control at the same time The drive motor controller is connected to the vehicle controller and the drive motor at the same time, the drive motor is connected to the vehicle drive system, and the vehicle drive system is connected to the vehicle controller.

The drive motor controller receives control instructions from the vehicle controller, is powered by the power battery, and controls the drive motor to drive the vehicle drive system to work.

The drive motor receives control instructions from the drive motor controller to drive the vehicle drive system.

The vehicle drive system represents other control systems of the entire vehicle, which meets the actual operation needs of the vehicle, and feeds back the current state of the vehicle to the vehicle controller for it to make judgments and decisions and control the entire vehicle system.

The working process of the novel high-efficiency range extender described in the present invention is divided into the following stages:

The first stage is the power battery charging process, as follows:

The vehicle controller sends control instructions to the engine ECU, and the engine ECU controls the rotation of the dual-rotor engine; at the initial startup, the motor controller receives the instruction from the vehicle controller, and controls the permanent magnet synchronous motor as a starter to drive the dual-rotor engine into the running position. After the dual-rotor engine is started, the motor controller no longer sends control instructions to the permanent magnet synchronous motor, and the permanent magnet synchronous motor is used as a generator to be driven by the dual-rotor engine to generate electricity, and the generated electric energy is rectified and filtered by the motor controller. battery charging.

The second stage provides power for the power battery to drive the entire vehicle drive system to work normally:

The power battery receives control instructions from the vehicle controller, supplies power to the drive motor controller, controls the drive motor to work, and drives the entire vehicle drive system to work.

The third stage is the process in which the vehicle drive system enters the braking energy recovery working condition, and drives the motor to generate electricity to charge the power battery;

When the vehicle controller recognizes that the vehicle drive system enters the braking energy recovery working condition, the vehicle drive system reverse-drags the motor to run and generate electricity, and the drive motor controller rectifies and filters to charge the power battery.

The fourth stage is: when the power of the power battery is insufficient, the permanent magnet synchronous motor and the dual-rotor engine work together to charge the power battery;

When the vehicle controller recognizes that the power of the power battery is insufficient and needs to be charged, the vehicle controller sends a control command to the power battery and the motor controller, so that the power battery supplies power to the motor controller, and the motor controller controls the permanent magnet synchronization The motor runs, thereby starting the dual-rotor engine. After the dual-rotor engine enters steady-state operation, the vehicle controller controls the power battery to no longer supply power to the motor controller, and the dual-rotor engine back-drags the permanent magnet synchronous motor to generate power to charge the power battery.

The advantages of the present invention are:

1. A new type of high-efficiency range extender for vehicles, using a dual-rotor engine, with high speed, stable operation, high power per liter and safety, small size, light weight, few parts, high degree of modularization and high security. Compared with the traditional piston reciprocating engine, there is no crank connecting rod mechanism and valve timing mechanism, and the structure is simpler.

2. A new type of high-efficiency range extender for vehicles, using a permanent magnet synchronous motor, which has a simple structure, small size, light weight, low loss, and high efficiency, and the permanent magnet synchronous motor can be used not only as a generator, but also as a The starter of the dual-rotor engine saves the starter in the original range extender, and has a more compact structure, saving cost and vehicle body space.

3. A new type of high-efficiency range extender for vehicles. The dual-rotor engine has a high speed, and it always drives the permanent magnet synchronous motor to generate electricity at high speed, which is more efficient and economical.

4. A new type of high-efficiency range extender for vehicles, which is small in size, light in weight, simple and compact in structure, saves cost and space, is more economical, more flexible and simple to control, and can efficiently increase the mileage of electric vehicles.

Description of drawings

Fig. 1 is a structural diagram of a novel high-efficiency range extender for vehicles of the present invention;

1-Vehicle controller; 2-Drive motor controller; 3-Vehicle drive system;

4-drive motor; 5-power battery; 6-motor controller;

7-Permanent magnet synchronous motor; 8-Double rotor engine; 9-Engine ECU;

specific embodiment

The specific implementation method of the present invention will be described in detail below in conjunction with the accompanying drawings.

The present invention provides a novel high-efficiency range extender for vehicles, as shown in Figure 1, comprising a vehicle controller 1, a drive motor controller 2, a vehicle drive system 3, a drive motor 4, a power battery 5, and a motor Controller 6, permanent magnet synchronous motor 7, dual-rotor engine 8 and engine ECU9;

The vehicle controller 1 is connected to the engine ECU9 to receive feedback information from all control systems and make control decisions.

The engine ECU9 is connected to the dual-rotor engine 8, the dual-rotor engine 8 is connected to the permanent magnet synchronous motor 7, the permanent magnet synchronous motor 7 is connected to the motor controller 6, and the motor controller 6 is connected to the vehicle controller 1 and the power battery 5 at the same time, and the power battery 5 is simultaneously Connect the vehicle controller 1 and the drive motor controller 2; the drive motor controller 2 is connected to the vehicle controller 1 and the drive motor 4 at the same time, the drive motor 4 is connected to the vehicle drive system 3, and the vehicle drive system 3 is connected to the vehicle controller 1.

The drive motor controller 2 receives control instructions from the vehicle controller 1, is powered by the power battery 5, and controls the drive motor 4 to drive the vehicle drive system 3 to work.

The drive motor 4 receives control instructions from the drive motor controller 2 to drive the vehicle drive system 3 .

The vehicle drive system 3 represents other control systems of the entire vehicle, which meets the actual operation requirements of the vehicle, and feeds back the current state of the vehicle to the vehicle controller 1 for it to make judgments and decisions and control the entire vehicle system.

The working process of the novel high-efficiency range extender described in the present invention is divided into the following stages:

The first stage is the process in which the permanent magnet synchronous motor starts the dual-rotor engine to charge the power battery when the power of the power battery is insufficient, as follows:

When the power of the power battery 5 is insufficient, after the vehicle controller 1 recognizes the current state, it sends an operation command to the motor controller 6, which requires power from the power battery; the motor controller 6 controls the permanent magnet synchronous motor 7, and then through the vehicle The controller 1 sends a control command to the engine ECU9. At the initial startup, the permanent magnet synchronous motor 7 acts as a starter to drive the dual-rotor engine 8 into a high-speed operating condition; after the dual-rotor engine 8 is started, the vehicle controller 1 controls the motor The controller 6 stops sending operation instructions to the permanent magnet synchronous motor 7. At this time, the vehicle controller 1 sends instructions to the engine ECU9, so that the engine ECU9 controls the dual-rotor engine 8 to run at high speed, and drives the permanent magnet synchronous motor 7 to run at high speed and generate electricity efficiently. , the generated electric energy is rectified and filtered by the motor controller 6 to directly charge the power battery 5 .

The permanent magnet synchronous motor module 7 can be used as the starter of the dual-rotor engine 8; it can also be used as a generator, which is dragged by the dual-rotor engine 8 to generate electricity for the power battery 5;

At this stage, regardless of the working conditions of the vehicle, the engine ECU 9 controls the high-speed operation of the dual-rotor engine 8 so that it can efficiently generate electricity and charge the power battery 5 . At the same time, the vehicle controller 1 controls the power generated by the range extender according to the different states of the power battery 5 to meet the different requirements of the power battery 5 . When the electric energy of the power battery is sufficient, the vehicle controller controls the engine ECU to let it control the dual-rotor engine 8 to stop running, so that the range extender stops working, and waits for the electric energy of the power battery 5 to be insufficient, and then enters the power generation state.

The second stage provides power for the power battery to drive the entire vehicle drive system to work normally:

The power battery 5 receives control commands from the vehicle controller 1, supplies power to the drive motor controller 2, controls the drive motor 4 to work, and drives the entire vehicle drive system 3 to work.

The third stage is the process in which the vehicle drive system enters the braking energy recovery mode and drives the motor to charge the power battery;

When the vehicle controller 1 recognizes that the vehicle drive system 3 enters the braking energy recovery mode, the vehicle drive system 3 drives the motor 4 to generate electricity, and the drive motor controller 2 rectifies and filters to charge the power battery 5 .

The fourth stage is: when the power of the power battery is insufficient, the permanent magnet synchronous motor and the dual-rotor engine work together to charge the power battery;

When the vehicle controller 1 recognizes that the power of the power battery 5 is insufficient and needs to be charged, the vehicle controller 1 sends a control command to the power battery 5 and the motor controller 6, so that the power battery 5 supplies power to the motor controller 6, and the The motor controller 6 controls the operation of the permanent magnet synchronous motor 7, thereby starting the dual-rotor engine 8. After the dual-rotor engine 8 enters steady-state operation, the vehicle controller 1 controls the power battery 5 to stop synchronizing the motor controller 6 and the permanent magnet. The motor 7 supplies power, and the dual-rotor engine 8 back-drags the permanent magnet synchronous motor 7 to generate power to charge the power battery 5 .

The present invention is a novel high-efficiency range extender for vehicles. Compared with traditional piston reciprocating engines, a high-speed dual-rotor engine with small size, light weight and simple structure is used to drive a permanent magnet synchronous motor to generate electricity to charge the vehicle power battery. At the same time, the permanent magnet synchronous motor can be used as the starter of the dual-rotor engine, providing an efficient solution to the problem of short driving range of pure electric vehicles;

The twin-rotor engine directly converts the combustion expansion force of the oil-air mixture into torque, while the traditional piston reciprocating engine first converts the combustion expansion force into linear motion, and then converts it into rotary motion by the crankshaft. In contrast, the twin-rotor engine reduces one stroke and is more efficient. The twin-rotor engine has fewer rotating parts when it works, and its structure is simpler than that of the traditional piston reciprocating engine, which makes it smaller in size, lighter in weight, and has a lower failure rate. It can be arranged closer to the middle of the vehicle to Balance the weight of the vehicle. Since there is no reciprocating motion of the piston, the conversion of chemical energy into power potential energy is more efficient, and the rotary engine can quickly increase the speed without precise crankshaft balance.

The dual-rotor engine has a higher speed than the traditional piston reciprocating engine, and can drive the permanent magnet synchronous motor to generate electricity more efficiently and more economically.

Claims (3)

1. a kind of novel efficient distance increasing unit for vehicle, it is characterised in that including entire car controller, motor control Device, driver for vehicle, motor, electrokinetic cell, electric machine controller, permagnetic synchronous motor and start at birotary engine Machine ECU；

Entire car controller connects Engine ECU, for receiving the feedback information of all control systems, and makes control decision；

Engine ECU connects birotary engine, birotary engine connection permagnetic synchronous motor, permagnetic synchronous motor connection electricity Machine controller, electric machine controller connect entire car controller and electrokinetic cell simultaneously, electrokinetic cell connect simultaneously entire car controller and Drive motor controller；Drive motor controller connects entire car controller and motor simultaneously, and motor connection vehicle drives Dynamic system, driver for vehicle connection entire car controller.

A kind of 2. novel efficient distance increasing unit for vehicle as claimed in claim 1, it is characterised in that described driving electricity Machine controller receives the control instruction of entire car controller, is powered by electrokinetic cell, control motor dragging driver for vehicle Work.

A kind of 3. novel efficient distance increasing unit for vehicle as claimed in claim 1, it is characterised in that described new height Efficiency distance increasing unit specific work process was divided into the next stage：

First stage is power battery charging process, specific as follows：

Entire car controller sends control instruction and rotated to Engine ECU, Engine ECU control birotary engine；Initial start When, electric machine controller receives the instruction of entire car controller, and control permagnetic synchronous motor drags birotary engine as starter motor Into Operation Conditions；After birotary engine starts, electric machine controller no longer sends control instruction to permagnetic synchronous motor, Permagnetic synchronous motor is dragged by birotary engine as generator and generated electricity, and caused electric energy passes through electric machine controller rectifying and wave-filtering Directly to power battery charging；

Second stage is that electrokinetic cell power supply drives whole driver for vehicle normal work：

Electrokinetic cell receives the control instruction of entire car controller, is powered to drive motor controller, control motor work, band Dynamic whole driver for vehicle work；

Phase III is that driver for vehicle enters Brake energy recovery operating mode, the mistake that motor generates electricity to power battery charging Journey；

When entire car controller, which recognizes driver for vehicle, enters Brake energy recovery operating mode, drive is dragged by driver for vehicle is counter Dynamic motor operating generates electricity, by drive motor controller rectifying and wave-filtering to power battery charging；

Fourth stage is：During electrokinetic cell electric power deficiency, by permagnetic synchronous motor and birotary engine cooperating, to dynamic Power battery charges；

When entire car controller recognizes, electrokinetic cell electric power is inadequate, it is necessary to when being charged, and entire car controller is to electrokinetic cell Control instruction is sent with electric machine controller, electrokinetic cell is powered to electric machine controller, by motor controller controls permanent-magnet synchronous Motor operates, so as to start birotary engine, after birotary engine enters steady operation, and vehicle control unit controls power Battery is no longer powered to electric machine controller, drags permagnetic synchronous motor to generate electricity to power battery charging by birotary engine is counter.