CN203713586U

CN203713586U - integrated control system for range extender of electric motor coach

Info

Publication number: CN203713586U
Application number: CN201320850227.6U
Authority: CN
Inventors: 杜朝辉; 雷小军; 徐性怡
Original assignee: Shanghai Dajun Technologies Inc
Current assignee: Shanghai Dajun Technologies Inc
Priority date: 2013-12-23
Filing date: 2013-12-23
Publication date: 2014-07-16
Anticipated expiration: 2023-12-23

Abstract

The utility model discloses an integrated control system for a range extender of an electric motor coach. A generator is mechanically connected with an engine, and the engine and the generator are controlled by an engine controller and a generator controller to run; power batteries are controlled by a battery management module to charge or discharge, and the generator controller is connected with the power batteries through a high-voltage direct current busbar; the engine controller and the generator controller are connected by a first CAN (Controller Area Network) communication bus, and a vehicle control unit, the generator controller and the battery management module are connected by a second CAN communication bus; the generator controller and the battery management module are controlled by the vehicle controller, and engine information is acquired by the generator controller from the first CAN communication bus and then is transferred to the vehicle control unit through the second CAN communication bus. The control system has the advantages that the vehicle control strategy is simplified, the generator and the engine can better work together, the optimal working point is selected, the reliable and stable operation of the range extender is ensured, and the loss of control of a vehicle is avoided.

Description

The integrated control system of electrobus distance increasing unit

Technical field

The utility model relates to a kind of integrated control system of electrobus distance increasing unit.

Background technology

Conventionally in electrobus, distance increasing unit consists of driving engine and the electrical generator that connects with engine crankshaft, and electric energy is the main drive energy of electrobus, and distance increasing unit is stand-by power source, with this, solves the short problem of pure electric automobile continual mileage.When battery electric quantity is not enough, distance increasing unit starts work, and electrical generator works under power generation mode, the mechanical energy of driving engine input is converted into electric energy, with the required electric energy of this supplementary Vehicle Driving Cycle.

In electrobus, conventionally by entire car controller, the energy of car load is managed and distributed, and entire car controller is generally according to the situation of change of SOC value of battery in Vehicle Driving Cycle process, determine required supplementary watt level, driving engine in distance increasing unit and electrical generator are controlled respectively as two parts, entire car controller is respectively to engine controller and engine controller sending controling instruction, by engine controller controls engine operation in specific rotation speeds, engine controller is controlled electrical generator and is exported required moment size, to reach the object of required horsepower output, or driving engine is done moment of torsion closed loop control, electrical generator is done speed closed loop and is controlled.Entire car controller need to be selected the operation point of driving engine and electrical generator, and need to coordinate both control.Under this master mode, entire car controller selected operation point oil consumption might not be optimum, master mode is also comparatively complicated, select that operation point is improper also may occur situation to lose control of one's vehicle, when abnormal condition appear in driving engine or electrical generator, can not better understand both running condition to select suitable fast speed treatment measures.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of integrated control system of electrobus distance increasing unit, this control system has overcome the defect that traditional distance increasing unit is controlled, simplified integrated vehicle control tactics, the better collaborative work of electrical generator and driving engine, and choose optimal working point, guarantee the reliable and stable operation of distance increasing unit, avoid to lose control of one's vehicle.

For solving the problems of the technologies described above, the integrated control system of the utility model electrobus distance increasing unit comprises driving engine, electrical generator, entire car controller, engine controller, engine controller, battery management module and electrokinetic cell, described alternator shaft and described engine crankshaft mechanical connection, described engine controller and engine controller are controlled respectively the operation of described driving engine and electrical generator, described battery management module is controlled described electrokinetic cell and is discharged and recharged, and described engine controller connects described electrokinetic cell by high voltage dc bus; Between described engine controller and engine controller, by a CAN communication bus, be connected, each other by a CAN communication bus swap data, between described entire car controller, engine controller and battery management module, by the 2nd CAN communication bus, connect, described entire car controller is controlled engine controller and battery management module according to car load energy management demand, and wherein needed engine information is transmitted to entire car controller by the 2nd CAN communication bus by engine controller from a CAN communication bus obtains.

Further, above-mentioned electrical generator is permagnetic synchronous motor.

Because the integrated control system of the utility model electrobus distance increasing unit has adopted technique scheme, be alternator shaft and the engine crankshaft mechanical connection of this control system, the operation of engine controller and engine controller difference control engine and electrical generator, battery management module is controlled electrokinetic cell and is discharged and recharged, and engine controller connects electrokinetic cell by high voltage dc bus; Between engine controller and engine controller, by a CAN communication bus, be connected, each other by a CAN communication bus swap data, between entire car controller, engine controller and battery management module, by the 2nd CAN communication bus, connect, entire car controller is controlled engine controller and battery management module according to car load energy management demand, and wherein needed engine information is transmitted to entire car controller by the 2nd CAN communication bus by engine controller from a CAN communication bus obtains.This control system has overcome the defect that traditional distance increasing unit is controlled, and has simplified integrated vehicle control tactics, the better collaborative work of electrical generator and driving engine, and choose optimal working point, and guarantee the reliable and stable operation of distance increasing unit, avoid to lose control of one's vehicle.

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the utility model is described in further detail:

Fig. 1 is the functional block diagram of the integrated control system of the utility model electrobus distance increasing unit.

The specific embodiment

As shown in Figure 1, the integrated control system of the utility model electrobus distance increasing unit comprises driving engine 1, electrical generator 2, entire car controller 3, engine controller 4, engine controller 5, battery management module 6 and electrokinetic cell 7, described electrical generator 2 rotating shafts and described driving engine 1 bent axle mechanical connection, described engine controller 4 and engine controller 5 are controlled respectively the operation of described driving engine 1 and electrical generator 2, described battery management module 6 is controlled described electrokinetic cell 6 and is discharged and recharged, and described engine controller 5 connects described electrokinetic cell 7 by high voltage dc bus 8, between described engine controller 4 and engine controller 5, by a CAN communication bus 91, be connected, each other by CAN communication bus 91 swap datas, described entire car controller 3, between engine controller 5 and battery management module 6, by the 2nd CAN communication bus 92, connect, described entire car controller 3 is controlled engine controller 5 and battery management module 6 according to car load energy management demand, wherein needed driving engine 1 information is transmitted to entire car controller 3 by the 2nd CAN communication bus 92 by engine controller 5 from a CAN communication bus 91 obtains.

Further, above-mentioned electrical generator 2 is permagnetic synchronous motors.Permagnetic synchronous motor has advantages of that efficiency is high, volume is little.

In this control system, the distance increasing unit of driving engine and electrical generator composition is done as a whole, by the integrated control of engine controller, entire car controller obtains the SOC value situation of electrokinetic cell by battery management module, according to electrokinetic cell SOC value, entire car controller sends the watt level control command of now required generating to engine controller by the 2nd CAN communication bus, engine controller receives after the control command of entire car controller, according to the result of electrical generator and Engine Matching optimization, select the operation point of oil consumption optimum, be engine speed and generator torque value, control distance increasing unit is operated in driving engine and electrical generator is optimized calibrated optimal working point.Electrical generator and driving engine were done to optimize and were demarcated, by engine controller, select operation point, reach the object of maximum fuel-economizing, engine controller sends rotating speed control command by a CAN communication bus to engine controller, by engine controller by engine control to the rotating speed requiring, engine controller is controlled electrical generator output required torque, thereby meets the horsepower output of entire car controller requirement; This control system can be simplified the control policy of entire car controller to distance increasing unit simultaneously, makes distance increasing unit work more reliable; The better collaborative work of driving engine and electrical generator, control response is faster, works more stable.

Conventionally distance increasing unit has four kinds of basic status: shutdown, idling, startup and generating; Entire car controller is according to the situation of electrokinetic cell SOC value and permission charging and discharging currents etc., by the 2nd CAN communication bus, to engine controller, send the work order of distance increasing unit, engine controller receives after the instruction of entire car controller transmission, by a CAN communication bus, to engine controller, send suitable control command, thereby complete the control of distance increasing unit, engine controller feeds back operating data and the state of driving engine and electrical generator to entire car controller by the 2nd CAN communication bus simultaneously.

Each working state control operating mode of this control system distance increasing unit is as follows:

Distance increasing unit start to be controlled: when engine controller receives after the distance increasing unit enabled instruction that entire car controller sends, first engine controller sends engine ignition signal, then control electrical generator with speed ring work, rotating speed of target is the idling speed (750rpm) of driving engine, engine controller is cancelled rate control instruction, engine controller controls engine ignition starts, after engine starting success, enter idling work, engine controller is switched to torque control mode, enter servo-actuated state, whether by the 2nd CAN communication bus, to entire car controller, send driving engine starts successfully simultaneously, the information such as idling work state, then wait for the further work instruction of accepting entire car controller,

The permanent power generating of distance increasing unit work: engine controller receives after the power instruction of entire car controller, according to optimizing calibrated optimum oil consumption curve with Engine Matching, select suitable rotating speed and moment of torsion operation point, then engine controller sends rotating speed control command to engine controller, the rotating speed of target that engine controller controls engine operation is requiring, when engine controller detects after the driving engine rotating speed of target that stable operation has required, engine controller is controlled the moment of torsion of electrical generator output demand, completes the permanent power Generation Control of distance increasing unit;

Distance increasing unit is shut down: when the SOC of electrokinetic cell value reaches car load and requires; do not need distance increasing unit to continue generating; entire car controller can send distance increasing unit halt instruction to engine controller; engine controller receives after halt instruction; first control and cancel electrical generator output torque, then to engine controller, send idling work instruction, when driving engine being detected, enter after idling mode; engine controller is controlled the ignition signal that kills engine, and engine off is shut down.

This control system adopts engine controller to carry out integrated control to distance increasing unit, and the relatively traditional distance increasing unit mode of this control policy has following advantage: the first, simplified integrated vehicle control tactics, the better collaborative work of electrical generator and driving engine; The second, electrical generator and Engine Matching can be selected optimal working point, to reduce oil consumption after optimizing; The 3rd, engine controller obtains the mode of operation of driving engine, prevents driving engine to drag and fly or rotating speed drags down; The 4th, when engine breakdown or when abnormal, can respond faster and move, preventing from working on causes driving engine to damage; The 5th, the mode of the conventional engines moment of torsion closed loop of comparing and generator speed closed loop, power stage is more stable, and bus current fluctuation is less.

Claims

1. the integrated control system of an electrobus distance increasing unit, comprise driving engine, electrical generator, entire car controller, engine controller, engine controller, battery management module and electrokinetic cell, described alternator shaft and described engine crankshaft mechanical connection, described engine controller and engine controller are controlled respectively the operation of described driving engine and electrical generator, described battery management module is controlled described electrokinetic cell and is discharged and recharged, described engine controller connects described electrokinetic cell by high voltage dc bus, it is characterized in that: between described engine controller and engine controller, by a CAN communication bus, be connected, each other by a CAN communication bus swap data, described entire car controller, between engine controller and battery management module, by the 2nd CAN communication bus, connect, described entire car controller is controlled engine controller and battery management module according to car load energy management demand, wherein needed engine information is transmitted to entire car controller by the 2nd CAN communication bus by engine controller from a CAN communication bus obtains.

2. the integrated control system of electrobus distance increasing unit according to claim 1, is characterized in that: described electrical generator is permagnetic synchronous motor.