CN102991496B - For energy recovery control method and the system of hybrid vehicle - Google Patents
For energy recovery control method and the system of hybrid vehicle Download PDFInfo
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- CN102991496B CN102991496B CN201110274303.9A CN201110274303A CN102991496B CN 102991496 B CN102991496 B CN 102991496B CN 201110274303 A CN201110274303 A CN 201110274303A CN 102991496 B CN102991496 B CN 102991496B
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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
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- Y02T10/62—Hybrid vehicles
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Abstract
The invention provides a kind of energy recovery control method for hybrid vehicle and system, comprise the following steps: detect engine management system EMS, the motor management systems MCU of hybrid vehicle and the state of battery management system BMS; When the state of described engine management system EMS, motor management systems MCU and battery management system BMS meet pre-conditioned after, obtain the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC and Rated motor moment of torsion; According to the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC and Rated motor torque arithmetic electric braking moment of torsion; Electric braking whether is adopted to carry out energy regenerating according to ABS condition adjudgement motor; If described motor adopts electric braking to carry out energy regenerating, then with described electric braking moment of torsion, control for brake is carried out to described motor.Kinetic transformation is become electric energy by the embodiment of the present invention, realizes the recovery of electric braking energy.
Description
Technical field
The present invention relates to Development of HEV Technology field, particularly relate to a kind of energy reclaiming method for hybrid vehicle and system.
Background technology
In recent years, in order to significantly improve Vehicle Economy and reduce discharge, energy-conservation growing with new-energy automobile technology, mainly comprise: Technology of Hybrid Electric Vehicle, diesel technology, gas fuel technology, flexible fuel technology, pure electrokinetic technique, fuel cell technology.Every technology all achieves tremendous development, and particularly the development of Technology of Hybrid Electric Vehicle is particularly outstanding, and Technology of Hybrid Electric Vehicle is the technology that can obtain scale industrialization breakthrough the earliest.Technology of Hybrid Electric Vehicle has the advantage in the majority not available for other technologies: hybrid vehicle energy sources scope is wide, high financial profit, can realize energy supply by energy-recuperation system when car retardation is braked.When car retardation is braked, motor is switched to power generation mode, kinetic transformation, while auxiliary braking, is electric energy and is stored in battery by motor, to improve the energy utilization efficiency of car load, increases the travelled distance of car load.Hybrid vehicle improves fuel consumption and emission problem to a certain extent.At present, the subject matter that hybrid electric vehicle faces is the problem of multiple-energy-source cooperation control, how to utilize motor to become the gordian technique of hybrid power system after adding motor driven systems efficiently.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.
For this reason, one aspect of the present invention proposes a kind of energy recovery control method for hybrid vehicle, comprises the following steps:
Detect engine management system EMS, the motor management systems MCU of hybrid vehicle and the state of battery management system BMS; When the state of described engine management system EMS, motor management systems MCU and battery management system BMS meet pre-conditioned after, obtain the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor moment of torsion.When described engine coolant temperature is lower than corresponding threshold value, judge that the state of described engine management system EMS meets pre-conditioned; When described battery temperature and battery charge power are lower than threshold value corresponding to the two, judge that the state of described battery management system BMS meets pre-conditioned; When described motor operates in unfaulty conditions, judge that the state of described motor management systems MCU meets pre-conditioned.
This energy recovery control method being used for hybrid vehicle also comprises: according to the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor torque arithmetic electric braking moment of torsion; Judge whether motor adopts electric braking to carry out energy regenerating according to ABS state; With, if judge that described motor adopts electric braking to carry out energy regenerating, then with described electric braking moment of torsion, control for brake is carried out to described motor.
The embodiment of the present invention detects the state of engine management system EMS, battery management system BMS and motor management systems MCU by hybrid power control unit, the torque distribution between traditional braking power and motor braking power is coordinated when state is suitable, kinetic transformation is become electric energy, realize the recovery of electric braking energy, solve the problem of kinetic energy and electric energy cooperation control in hybrid vehicle, thus both achieved the efficiency utilization of motor, also can ensure the car load traveling comfort of hybrid vehicle when energy regenerating and the economy of energy.
In addition, the embodiment of the present invention can also have following technical characteristic:
In one embodiment of the invention, described engine coolant temperature determines described engine resistance torque and described engine speed.If when described engine cooling temperature is higher than a certain threshold value, full-vehicle control unit will exit motor electric braking pattern, is not damaged to protect driving engine.
When described anti-skid brake system ABS starts, electric braking is not adopted to carry out energy regenerating.
In one embodiment of the invention, when described motor adopts electric braking to carry out energy regenerating, engine stop oil spout is controlled, to improve the economy of fuel oil.
In one embodiment of the invention, storage battery can provide propulsion source by inverter to described motor.Described inverter plays the effect changed between interchange and direct current between described motor and described storage battery.When described motor provides driving, the direct current (DC) at described storage battery two ends is converted to the three plase alternating current needed for motor by described inverter.
In a preferred embodiment of the invention, in energy recovery process, hybrid power control unit still monitors the state of driving engine, battery, motor.
The present invention also proposed a kind of energy recovery control system for hybrid vehicle on the other hand, comprises engine management system EMS, for detecting the engine condition of described hybrid vehicle and controlling described driving engine, motor management systems MCU, for detecting the motor status of described hybrid vehicle and controlling described motor, battery management system BMS, for detecting the battery status of described hybrid vehicle, hybrid power control unit, described hybrid power control unit respectively with described engine management system EMS, described motor management systems MCU is connected with described battery management system BMS, described hybrid power control unit is for detecting the engine management system EMS of hybrid vehicle, the state of motor management systems MCU and battery management system BMS, and when judging described engine management system EMS, the state of motor management systems MCU and battery management system BMS meet pre-conditioned after, obtain the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor moment of torsion, and according to the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor torque arithmetic electric braking moment of torsion, after carrying out energy regenerating at judgement employing motor employing electric braking, with described electric braking moment of torsion, control for brake is carried out to described motor.
The present invention is by providing hybrid power control unit, with engine management system EMS, battery management system BMS is connected with motor management systems MCU, engine management system EMS is detected by hybrid power control unit, the state of battery management system BMS and motor management systems MCU, the torque distribution between traditional braking power and motor braking power is coordinated when state is suitable, kinetic transformation is become electric energy, realize the recovery of electric braking energy, solve the problem of kinetic energy and electric energy cooperation control in hybrid vehicle, thus both achieved the efficiency utilization of motor, also the car load traveling comfort of hybrid vehicle when energy regenerating and the economy of energy can be ensured.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the mechanical schematic diagram of the energy recovery control system for hybrid vehicle of the embodiment of the present invention;
Fig. 2 is the electrical schematic of the energy recovery control system for hybrid vehicle of the embodiment of the present invention;
Fig. 3 is the concrete control flow chart of the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, be the mechanical schematic diagram of the hybrid vehicle Brake energy recovery control system of the embodiment of the present invention.Motor 1 is between driving engine 2 and change speed gear box 3, the bent axle of driving engine 2 is connected with the rotor of motor 1, the rotor other end of motor 1 is connected with the input shaft of change speed gear box 3, and stator one end of motor 1 is connected with driving engine 2 end face, and the other end is connected with the housing of change speed gear box 3.
As shown in Figure 2, be the electrical schematic of hybrid vehicle Brake energy recovery control system.This system comprises engine management system EMS10, motor management systems MCU11, hybrid power control unit 12 and battery management system BMS13.Hybrid power control unit 12 is connected with engine management system EMS10 by CAN, thus the correlation behavior parameter of driving engine 2 can be obtained, as engine speed, engine torque etc., and control command can be sent by CAN to EMS10, as adjustment engine torque etc.
Hybrid power control unit 12 is connected with battery management system BMS13 by CAN, battery correlation behavior parameter can be obtained, as battery temperature, battery charge state etc., and control command can be sent by CAN to BMS13, as controlled positive and negative terminal relay adhesive etc.In addition, hybrid power control unit 12 is also connected with motor management systems MCU11 by CAN, thus can obtain motor correlation behavior parameter, as motor speed, Motor torque etc., and control command can be sent by CAN to MCU11, as controlled to change between motor different mode.
When judge the state of engine management system EMS10, motor management systems MCU11 and battery management system BMS13 meet pre-conditioned after, obtain the accelerator pedal position of hybrid vehicle, brake pedal position, battery SOC and Rated motor moment of torsion, and according to the accelerator pedal position of hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor torque arithmetic electric braking moment of torsion.And after judging that motor employing electric braking carries out energy regenerating, with electric braking moment of torsion, control for brake is carried out to motor.
In one embodiment of the invention, the state of engine management system EMS10 can comprise engine coolant temperature, engine resistance torque and engine speed etc., wherein, by engine coolant temperature determination engine resistance torque and engine speed.Particularly, when engine coolant temperature is lower than corresponding threshold value, judge that the state of engine management system EMS10 meets pre-conditioned.
In one embodiment of the invention, the state of battery management system BMS13 comprises battery temperature and battery charge power, and when battery temperature and battery charge power are lower than threshold value corresponding to the two, judge that the state of battery management system BMS13 meets pre-conditioned.
In one embodiment of the invention, the state of motor management systems MCU11 comprises the running state of motor, when motor operates in unfaulty conditions, judges that the state of motor management systems MCU11 meets pre-conditioned.
As shown in Figure 3, be the concrete control flow chart of the embodiment of the present invention.After key is screwed to ON shelves, hybrid power control unit 12 detects the information of hybrid vehicle to each subsystem and detects, as the engine coolant temperature in engine management system EMS10, engine speed, motor operating state in motor management systems MCU11, and the battery temperature and battery charge power etc. in battery management system BMS13, and each status information is tentatively judged.
In one embodiment of the invention, hybrid vehicle can adopt the more sensitive Ni-MH battery of temperature, and during battery temperature change, the charge power of battery changes greatly, and therefore needs to monitor battery temperature and battery charge power.In Brake energy recovery process, battery can charge by instantaneous large-current, if overcharged, can cause the injury of battery irrecoverability, if therefore for protection battery battery charge power will not recharge higher than battery during a certain threshold value.If when engine coolant temperature is higher than a certain threshold value, full-vehicle control unit will exit motor electric braking pattern.Probably occur in braking procedure that engine resistance torque changes, so corresponding engine speed will change, and can cut off oil spout to improve driving engine economy and discharge in rotating speed falling process.
When hybrid power control unit 12 judge the state of engine management system EMS10, motor management systems MCU11 and battery management system BMS13 meet pre-conditioned after, obtain the accelerator pedal position of hybrid vehicle, brake pedal position, battery SOC and Rated motor moment of torsion.Then, hybrid power control unit 12 judges the moment of torsion of Brake energy recovery according to above-mentioned parameter, and calculates electric braking moment of torsion.Different ambient temperatures, accelerator pedal position, brake pedal position, coefficient of road adhesion, battery status, engine condition, ABS take different electric braking moments of torsion, thus guarantee that in energy recovery process, car load is safe and reliable to operation.(specifically how to calculate and provide? many thanks)
When anti-skid brake system ABS does not start, electric braking is adopted to carry out energy regenerating.In one embodiment of the invention, when anti-skid brake system ABS starts, reclaiming moment of torsion by cancelling the braking calculated, not adopting electric braking to carry out energy regenerating.
In one embodiment of the invention, when motor adopts electric braking to carry out energy regenerating, engine stop oil spout is controlled.If judge that motor adopts electric braking to carry out energy regenerating, then with electric braking moment of torsion, control for brake is carried out to motor.
In one embodiment of the invention, storage battery can provide propulsion source by inverter to described motor.Inverter plays the effect changed between interchange and direct current between described motor and described storage battery.When described motor provides driving, the direct current (DC) at described storage battery two ends is converted to the three plase alternating current needed for motor by described inverter.
In a preferred embodiment of the invention, in energy recovery process, hybrid power control unit 12 still can monitor the state of driving engine, battery, motor.The state of battery management system BMS13 Real-Time Monitoring battery also will send to full-vehicle control unit the battery important information collected.In electric braking process, if when battery charge state is higher than a certain threshold value, transmission message makes it cut off connection to battery management system BMS13 by full-vehicle control unit.
The present invention is by providing hybrid power control unit 12, with engine management system EMS10, battery management system MCU11 is connected with motor management systems BMS13, engine management system EMS10 is detected by hybrid power control unit, the state of battery management system BMS13 and motor management systems MCU11, the torque distribution between traditional braking power and motor braking power is coordinated when state is suitable, kinetic transformation is become electric energy, realize the recovery of electric braking energy, solve the problem of kinetic energy and electric energy cooperation control in hybrid vehicle, realize the efficiency utilization of motor, ensure the car load traveling comfort of hybrid vehicle when energy regenerating and the economy of energy.Meanwhile, in energy recovery process, hybrid power control unit still can monitor the state of driving engine, battery, motor, and the important information collected is sent to full-vehicle control unit, guarantees that in energy recovery process, car load is safe and reliable to operation.
In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (11)
1. for an energy recovery control method for hybrid vehicle, it is characterized in that, comprise the following steps:
Detect engine management system EMS, the motor management systems MCU of hybrid vehicle and the state of battery management system BMS, wherein, the state of described engine management system EMS comprises engine coolant temperature, engine resistance torque and engine speed, wherein, described engine resistance torque and described engine speed is determined by described engine coolant temperature, when described engine coolant temperature is lower than corresponding threshold value, judge that the state of described engine management system EMS meets pre-conditioned;
When the state of described engine management system EMS, motor management systems MCU and battery management system BMS meet pre-conditioned after, obtain the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor moment of torsion;
According to the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor torque arithmetic electric braking moment of torsion;
Electric braking whether is adopted to carry out energy regenerating according to ABS condition adjudgement motor; With
If described motor adopts electric braking to carry out energy regenerating, then with described electric braking moment of torsion, control for brake is carried out to described motor.
2. as claimed in claim 1 for the energy recovery control method of hybrid vehicle, it is characterized in that, the state of described battery management system BMS comprises battery temperature and battery charge power, and when described battery temperature and battery charge power are lower than threshold value corresponding to the two, judge that the state of described battery management system BMS meets pre-conditioned.
3. as claimed in claim 1 for the energy recovery control method of hybrid vehicle, it is characterized in that, the state of described motor management systems MCU comprises the running state of motor, when described motor operates in unfaulty conditions, judge that the state of described motor management systems MCU meets pre-conditioned.
4., as claimed in claim 1 for the energy recovery control method of hybrid vehicle, it is characterized in that, also comprise:
When anti-skid brake system ABS starts, electric braking is not adopted to carry out energy regenerating.
5., as claimed in claim 1 for the energy recovery control method of hybrid vehicle, it is characterized in that, also comprise:
When described motor adopts electric braking to carry out energy regenerating, control engine stop oil spout.
6. for an energy recovery control system for hybrid vehicle, it is characterized in that, comprising:
Engine management system EMS, for detecting the engine condition of described hybrid vehicle and controlling described driving engine, wherein, the state of described engine management system EMS comprises engine coolant temperature, engine resistance torque and engine speed, wherein, described engine resistance torque and described engine speed is determined by described engine coolant temperature, when described engine coolant temperature is lower than corresponding threshold value, judge that the state of described engine management system EMS meets pre-conditioned;
Motor management systems MCU, for detecting the motor status of described hybrid vehicle and controlling described motor;
Battery management system BMS, for detecting the battery status of described hybrid vehicle;
Hybrid power control unit, described hybrid power control unit respectively with described engine management system EMS, described motor management systems MCU is connected with described battery management system BMS, described hybrid power control unit is for detecting the engine management system EMS of hybrid vehicle, the state of motor management systems MCU and battery management system BMS, and when judging described engine management system EMS, the state of motor management systems MCU and battery management system BMS meet pre-conditioned after, obtain the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor moment of torsion, and according to the accelerator pedal position of described hybrid vehicle, brake pedal position, battery SOC, coefficient of road adhesion and Rated motor torque arithmetic electric braking moment of torsion, after carrying out energy regenerating at judgement employing motor employing electric braking, with described electric braking moment of torsion, control for brake is carried out to described motor.
7. as claimed in claim 6 for the energy recovery control system of hybrid vehicle, it is characterized in that, described hybrid power control unit is connected with described battery management system BMS with described engine management system EMS, described motor management systems MCU respectively by CAN.
8. as claimed in claim 6 for the energy recovery control system of hybrid vehicle, it is characterized in that, the state of described battery management system BMS comprises battery temperature and battery charge power, and when described battery temperature and battery charge power are lower than threshold value corresponding to the two, judge that the state of described battery management system BMS meets pre-conditioned.
9. as claimed in claim 6 for the energy recovery control system of hybrid vehicle, it is characterized in that, the state of described motor management systems MCU comprises the running state of motor, when described motor operates in unfaulty conditions, judge that the state of described motor management systems MCU meets pre-conditioned.
10., as claimed in claim 6 for the energy recovery control system of hybrid vehicle, it is characterized in that, when anti-skid brake system ABS starts, described hybrid power control unit does not adopt electric braking to carry out energy regenerating.
11., as claimed in claim 6 for the energy recovery control system of hybrid vehicle, is characterized in that, when described motor adopts electric braking to carry out energy regenerating, described hybrid power control unit controls engine stop oil spout.
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| US9738268B1 (en) * | 2016-02-23 | 2017-08-22 | Ford Global Technologies, Llc | Deceleration control system for a hybrid vehicle |
| CN105922987B (en) * | 2016-06-03 | 2018-02-09 | 清华大学 | Downshift strategy and Mechatronic Systems in HEV/EV process of regenerative braking |
| CN107618375A (en) * | 2017-07-20 | 2018-01-23 | 山东凯马汽车制造有限公司 | The electronic logistic car EMS of energy-conserving and environment-protective |
| CN112572406B (en) * | 2019-09-27 | 2022-06-10 | 比亚迪股份有限公司 | Method and device for controlling vehicle, storage medium and vehicle |
| CN113415167A (en) * | 2021-07-30 | 2021-09-21 | 重庆电子工程职业学院 | Energy recovery system and method for hybrid electric vehicle |
| CN115384469B (en) * | 2022-08-24 | 2024-01-09 | 西安主函数智能科技有限公司 | Dynamic torque distribution method based on air brake and electric brake of new energy engineering vehicle |
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