CN101612923A - Vehicle control unit of electric vehicle - Google Patents

Vehicle control unit of electric vehicle Download PDF

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Publication number
CN101612923A
CN101612923A CN200910057690A CN200910057690A CN101612923A CN 101612923 A CN101612923 A CN 101612923A CN 200910057690 A CN200910057690 A CN 200910057690A CN 200910057690 A CN200910057690 A CN 200910057690A CN 101612923 A CN101612923 A CN 101612923A
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CN
China
Prior art keywords
controller
interface
vehicle
state
control unit
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Application number
CN200910057690A
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Chinese (zh)
Inventor
张根发
刘光军
冯世军
李通
韩新江
杨文平
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上海联孚新能源科技有限公司
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Priority to CN200910057690A priority Critical patent/CN101612923A/en
Publication of CN101612923A publication Critical patent/CN101612923A/en

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Abstract

The invention discloses a kind of vehicle control unit of electric vehicle, described controller is SCM Based embedded controller, and described controller is provided with six interfaces; The voltage and current Hall element of accelerator pedal sensor, speed-slackening signal sensor, described controller connects the A/D interface; Tachogen connects the PWM interface; Ignition lock, power fail connect the I/O interface; Battery management system, servo steering system, electric machine controller, solar panel controller connect the CAN communication interface by high-speed CAN bus; Demarcate coupling, trouble diagnosing connection SCI0 communication interface; The light management system is by the total wire joint SCI1 of LIN communication interface; Controller carries out communication by bus, and accepts, filters, handles whole vehicle state.

Description

Vehicle control unit of electric vehicle

Technical field

The present invention relates to the whole-control system in a kind of automobile control technology, relate in particular to a kind of solar electrically propelled vehicle entire car controller.

Background technology

Energy-saving and emission-reduction are worldwide trends, and various countries are under the policy of energy-saving and emission-reduction, all in research relevant policies guiding, wherein the ratio maximum that accounts for the pollution that the vehicle were caused.Therefore each big auto producer is researched and developed unit in order to cater to public demand and the environmental regulation restriction of satisfying government with relevant automobile, and various " green " new forms of energy concept car is come out one after another, to meet world trends.At present input manufacturer and the research and development unit with elec. vehicle is maximum, and it is comparatively backward that the automobile of China is researched and developed relative west, but in 2009 Shanghai International motor shows, the homemade pure electric vehicle with independent brand just has 10 sections more than.As seen Wei Lai automobile will be the world of electronlmobil, also be the trend of the times of environmental demands.

Electronlmobil is divided into three kinds of forms, is respectively pure electric vehicle (PEV comprises solar electrically propelled vehicle), fuel-cell vehicle (FCEV) and hybrid vehicle (HEV).The entire car controller of solar electrically propelled vehicle entire car controller and hybrid power has tangible difference: the hybrid power entire car controller is to drive two kinds or above automobile driving system to control two kinds or the above energy; The solar electrically propelled vehicle whole-control system then is to distribute the vehicle management system that drives with a kind of motor with control solar panel and two kinds of energy of storage battery, thereby reaches optimization and maximizedly utilize this cleaning of solar power, inexhaustible natural energy source.

CAN (Controller Area Network local area control net) bus is formally proposed in February, 1986 by Bosch, Benz development test, and Bosch CAN2.0 becomes international standard (ISO11898) in November, 1993.Owing to adopted many up-to-date technologys and unique design, the CAN bus is compared with general communication bus, and its data communication has outstanding reliability, real-time and alerting ability, is one of important development direction of vehicle local network control.

LIN (Local Interconnect Network) is a kind of towards automobile much single more main from, asynchronous serial bus standard with slow network, need to be positioned interconnection but the parts of the real-time that do not require emphasis, as the supplementary sum tip of CAN network.

In the prior art, car load control technology research at present for hybrid vehicle is more, in the patented technology document of announcing is many with this field all also, research for solar electrically propelled vehicle whole-control system field is just at the early-stage, does not have the whole-control system and the entire car controller of comparative maturity as yet.

Summary of the invention

Technical matters to be solved by this invention provides a kind of vehicle control unit of electric vehicle, this device is in conjunction with chaufeur driving intention and car load operation conditions, the solar panel management system of automobile, battery management system, electric machine control system, servo steering system, light management system etc. are synthesized and coordinated and controlled, high-speed CAN bus and low speed LIN bussing technique have been used simultaneously, the stability of entire controller is greatly improved, and effectively reduced the wire harness cost of car load.

In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of vehicle control unit of electric vehicle, described controller are SCM Based embedded controller, and described controller is provided with A/D interface, pulse-width modulation PWM interface, I/O interface, CAN interface, serial ports SCI0 interface, SCI1 interface;

The voltage and current Hall element of accelerator pedal sensor, speed-slackening signal sensor, described controller connects the A/D interface of described controller;

Tachogen connects the PWM interface of described controller;

Ignition lock, power fail connect the I/O interface of described controller;

Battery management system, servo steering system, electric machine controller, solar panel controller connect the CAN communication interface of described controller by high-speed CAN bus;

Demarcation coupling, trouble diagnosing connect the SCI0 communication interface of described controller;

The light management system is by the SCI1 communication interface of the described controller of the total wire joint of LIN;

Described controller carries out communication by bus, and accepts, filters, handles whole vehicle state.

Further, the external transceiver TJA1021 of the SCI1 interface of described controller (LIN interface) constitutes the LIN bus network of entire car controller.

Further, the external transceiver TJA1040 of the CAN communication interface of described controller constitutes the high-speed CAN bus network.

Further, described controller is divided three kinds of states:

First kind of state is the complex that entire car controller running state function realizes, control is carried out normal operation with coordination electric machine controller, solar panel controller, battery management system, servo steering system, lamp light control system;

Second kind of state is the complex that entire car controller is coordinated to realize with controllable function to the Full Vehicle System state, its control and the static and dormant state of coordinating whole-control system;

The third state is the complex that entire car controller is realized gateway communications functions, control analysis and treatment S CI diagnosis communication, LIN communication, CAN communication.

Further, described entire car controller can be adjusted solar cell and charging and discharging of accumulator state according to current weather conditions, automobile operating state;

When running car, the use power division of controller control solar cell and storage battery;

When stopping, controller uses solar cell that storage battery is charged according to the storage battery dump energy, and the electronic control module to other sends the dormancy instruction simultaneously.

Further, described entire car controller can be discerned vehicle-mounted charge and ground charging automatically, and wherein the electrically-charged priority in ground is the highest; When satisfying the charging of vehicle-mounted charge and ground simultaneously, vehicle control unit controls is carried out the ground charging; When the charging of no ground, controller judges whether to use solar power to charge according to weather conditions and driving conditions.

Further, described entire car controller can carry out trouble diagnosing, comprises the power fail diagnosis, electrical fault, lighting fault, solar cell fault, optical sensor fault.

Further, described entire car controller sends to controlling from node of each lamp dimmer according to sunlight strength detection signal, time signal, the light controling signal of solar panel group after judging.

Further, described entire car controller is self check and static self check dynamically, and controller is when power-up state, and controller will detect relevant interface and each controller state automatically, the prompting of controller auto alarm enters guard mode and stores corresponding diagnostic code when detecting fault; The guard mode of controller can be recovered automatically behind trouble removal.

Further, described entire car controller adopts the power protection module, and power supply is carried out step control, when power supply during by reversal connection, just can not become the loop, can not turn on the power switch.

Patent device is carried out communication by bus and other controllers, and accepts, filters, handles the state of car load; It is served as when driving and gathers the driver's operation intention, analyzes the information of car load situation, optimizes power control, coordinates the more responsibility of good berth of other associated each controllers.Its beneficial effect just is the control to the collection of solar energy and motor power consumption, and to the co-operative control of battery-driven car control module, this controller has SCI diagnosis communication, LIN communication, 3 kinds of communication modes of CAN communication, except carrying out car load coordination and control, also as a gateway, the network of battery-driven car is carried out network management.

Description of drawings

The present invention is described in detail below in conjunction with the drawings and specific embodiments:

Fig. 1 is the functional-block diagram of apparatus of the present invention;

Fig. 2 is the control flow chart of apparatus of the present invention;

Fig. 3 is the diagram of circuit of state 1 among Fig. 2;

Fig. 4 is the diagram of circuit of state 2 among Fig. 2;

Fig. 5 is the diagram of circuit of state 3 among Fig. 2;

The specific embodiment

As Fig. 1 is the functional-block diagram of apparatus of the present invention;

This entire car controller is divided from the communication aspect, and three class communications are arranged: first is universal asynchronous reception/sending set UART communication, realizes the demarcation and the diagnosis communication of entire car controller; Follow the light management system for the LIN bus for second and carry out communication, communication speed is slower, and the light management system is carried out aux. controls, thereby realizes energy saving and comfort feature; Follow electric machine controller, solar panel management system, battery management system, servo steering system for the CAN bus for the 3rd and carry out communication, communication speed is very fast, entire car controller is collected the state and the driver intention information of each controller, analyze and the important control strategy of car load is carried out coordinative command, but entire car controller is not handled the details control and the emergency situation of each controller, and the details of each controller and emergency situation are by each controller by oneself.

The chip MAX232 that links to each other with micro controller system SCI0 PORT COM is not included in the circuit of entire car controller, but independent in the middle of the level converter circuit between entire car controller and the PC.

This entire car controller is divided from system level, and 3 states are arranged, promptly corresponding three state as Fig. 2.After entering program entry, controller is written into data, carries out state then, promptly enters first state, second state or the third state respectively after the state self check is normal.

As shown in Figure 3, state 1 (i.e. first state) is the complex that entire car controller running state function realizes, control is carried out normal operation with coordination electric machine controller, solar panel management system, battery management system, servo steering system, lamp light control system; Get the hang of after 1, at first read in pedal stroke, relevant informations such as solar panel, storage battery, servo-steering control, light control information, respectively solar panel, motor speed, servo steering system, braking, lamp light control system are detected then, thereby carry out co-operative control.

As shown in Figure 4, to be entire car controller coordinate the complex realized with controllable function, its control and the static and dormant state of coordinating whole-control system to the Full Vehicle System state to state 2 (i.e. second state); It detects motor, servo-steering, storage battery, solar power electroplax respectively, as satisfies the dormancy condition, then enters dormant state, does not satisfy and then carries out the state self check again.

As shown in Figure 5, state 3 is complexs that entire car controller is realized gateway communications functions, control analysis and treatment S CI diagnosis communication, LIN communication, CAN communication task.

This entire car controller radical function is as follows:

Energy control strategy: car load control can be adjusted solar cell and charging and discharging of accumulator state according to current weather conditions, automobile operating state.When running car, the use power division of controller control solar cell and storage battery; When stopping, controller uses solar cell that storage battery is charged according to the storage battery dump energy, and the electronic control module to other sends the dormancy instruction simultaneously, thereby saves power consumption.

Vehicle-mounted charge and ground charging: entire car controller is discerned vehicle-mounted charge and ground charging automatically, and wherein the electrically-charged priority in ground is the highest.When satisfying the charging of vehicle-mounted charge and ground simultaneously, entire car controller recognizes that people's active consciousness priority is higher than automatic guidance priority, so vehicle control unit controls is carried out the ground charging; When the charging of no ground, controller judges whether to use solar power to charge according to weather conditions and driving conditions, thereby makes charging intelligent.

Trouble diagnosing: entire car controller has fault diagnosis functions, comprising: power fail diagnosis, electrical fault, lighting fault, solar cell fault, optical sensor fault.Service personnel can dwindle the trouble tracing scope according to diagnostic code, has increased the comfort feature of maintenance.

Light control: entire car controller sends to controlling from node of each lamp dimmer according to sunlight strength detection signal, time signal, the light controling signal of solar panel group after judging.1, non-attended light light guide ability (problem of solution: in travelling by day, wanted culvert or tunnel sometimes, and need big light opening because of the inside is dark, but after car passed through, the driver forgot that sometimes closing headlight travelled).2, automatic mode, the manual mode of light control are optional.When 3, light was strong, various light all should extinguish, and turned off if chaufeur is forgotten, can point out chaufeur.

Self-checking function: divide dynamic self check and static self check, controller is at power-up state, and controller will detect associated interface and each controller state automatically, in case break down, the prompting of controller auto alarm enters guard mode and stores corresponding diagnostic code; The guard mode of controller can be recovered automatically behind trouble removal.

Power supply reverse connecting protection: adopted the power protection module in the controller circuitry, and power supply has been carried out step control by the control core.When power supply during by reversal connection, just can not become the loop, the control core is turned on the power switch, thus the whole-control system of protection.

Those skilled in the art will recognize that, the above-mentioned specific embodiment is exemplary, be in order better to make those skilled in the art can understand this patent, can not be interpreted as it is the restriction that this patent is comprised scope, so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.

Claims (10)

1, a kind of vehicle control unit of electric vehicle is characterized in that:
Described controller is SCM Based embedded controller, and described controller is provided with A/D interface, pulse-width modulation PWM interface, I/O interface, CAN interface, serial ports SCI0 interface, SCI1 interface;
The voltage and current Hall element of accelerator pedal sensor, speed-slackening signal sensor, described controller connects the A/D interface of described controller;
Tachogen connects the PWM interface of described controller;
Ignition lock, power fail connect the I/O interface of described controller;
Battery management system, servo steering system, electric machine controller, solar panel controller connect the CAN communication interface of described controller by high-speed CAN bus;
Demarcation coupling, trouble diagnosing connect the SCI0 communication interface of described controller;
The light management system is by the SCI1 communication interface of the described controller of the total wire joint of LIN;
Described controller carries out communication by bus, and accepts, filters, handles whole vehicle state.
2, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
The external transceiver of the SCI1 interface of described controller constitutes the LIN bus network of entire car controller.
3, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
The external transceiver of the CAN communication interface of described controller constitutes the high-speed CAN bus network.
4, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described controller is divided three kinds of states:
First kind of state is the complex that entire car controller running state function realizes, control is carried out normal operation with coordination electric machine controller, solar panel controller, battery management system, servo steering system, lamp light control system;
Second kind of state is the complex that entire car controller is coordinated to realize with controllable function to the Full Vehicle System state, its control and the static and dormant state of coordinating whole-control system;
The third state is the complex that entire car controller is realized gateway communications functions, control analysis and treatment S CI diagnosis communication, LIN communication, CAN communication.
5, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described entire car controller can be adjusted solar cell and charging and discharging of accumulator state according to current weather conditions, automobile operating state;
When running car, the use power division of controller control solar cell and storage battery;
When stopping, controller uses solar cell that storage battery is charged according to the storage battery dump energy, and the electronic control module to other sends the dormancy instruction simultaneously.
6, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described entire car controller can be discerned vehicle-mounted charge and ground charging automatically, and wherein the electrically-charged priority in ground is the highest; When satisfying the charging of vehicle-mounted charge and ground simultaneously, vehicle control unit controls is carried out the ground charging; When the charging of no ground, controller judges whether to use solar power to charge according to weather conditions and driving conditions.
7, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described entire car controller can carry out trouble diagnosing, comprises the power fail diagnosis, electrical fault, lighting fault, solar cell fault, optical sensor fault.
8, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described entire car controller sends to controlling from node of each lamp dimmer according to sunlight strength detection signal, time signal, the light controling signal of solar panel group after judging.
9, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described entire car controller is self check and static self check dynamically, controller is when power-up state, controller will detect relevant interface and each controller state automatically, and the prompting of controller auto alarm enters guard mode and stores corresponding diagnostic code when detecting fault; The guard mode of controller can be recovered automatically behind trouble removal.
10, vehicle control unit of electric vehicle according to claim 1 is characterized in that:
Described entire car controller adopts the power protection module, and power supply is carried out step control, when power supply during by reversal connection, just can not become the loop, can not turn on the power switch.
CN200910057690A 2009-07-31 2009-07-31 Vehicle control unit of electric vehicle CN101612923A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101885312A (en) * 2010-07-06 2010-11-17 中山大学 Electric automobile whole-control system
CN101961997A (en) * 2010-09-17 2011-02-02 安徽安凯汽车股份有限公司 Entire bus controller for series hybrid power buses
CN102019925A (en) * 2010-12-14 2011-04-20 湖南南车时代电动汽车股份有限公司 General control method of whole electric automobile controller based on singlechip
CN102248941A (en) * 2010-05-20 2011-11-23 开斋集团有限公司 Method and system for controlling vehicle
CN102303572A (en) * 2011-06-24 2012-01-04 张家港市江南汽车制造有限公司 Auxiliary system controller for electric automobile
CN102455697A (en) * 2011-03-25 2012-05-16 扬州亚星客车股份有限公司 Electric bus vehicle control unit based on programmable logic controller (PLC) technology
CN102490651A (en) * 2011-12-07 2012-06-13 上海科世达-华阳汽车电器有限公司 Motor vehicle and vehicle mounted interior roof lamp module
CN102815274A (en) * 2012-06-28 2012-12-12 东南(福建)汽车工业有限公司 Management method for bus-mastering system of finished automobile
CN103158648A (en) * 2011-12-19 2013-06-19 北汽福田汽车股份有限公司 Vehicle-mounted local area network (LAN) structure for car and car with the same
CN103223940A (en) * 2013-05-02 2013-07-31 北京航空航天大学 Electric car coordination control system
CN103359025A (en) * 2012-04-10 2013-10-23 陕西重型汽车有限公司 Automobile power management control device and automobile including same
CN103359106A (en) * 2012-03-29 2013-10-23 北京九州华海科技有限公司 New-energy hybrid electric vehicle controller and analog signal output method thereof
CN103647307A (en) * 2010-02-15 2014-03-19 株式会社电装 Charge controller and navigation device for plug-in vehicle
CN103995742A (en) * 2014-05-20 2014-08-20 万向钱潮股份有限公司 Embedded type real-time scheduling control device and method based on MCU
CN104149628A (en) * 2014-09-04 2014-11-19 吉林大学 Electric automobile driving system fault diagnosis centralized controller
CN104635690A (en) * 2014-12-30 2015-05-20 北京新能源汽车股份有限公司 Whole vehicle control unit (VCU) integrated with gateway function of pure electric vehicle
CN104852947A (en) * 2014-03-18 2015-08-19 北汽福田汽车股份有限公司 CAN network topology structure of vehicle and vehicle using same
CN105425774A (en) * 2015-11-30 2016-03-23 深圳市轱辘软件开发有限公司 Control method and apparatus of vehicle-mounted diagnostic joint and vehicle-mounted diagnostic joint
CN105711524A (en) * 2016-04-05 2016-06-29 湖北超亿科技有限公司 Vehicle controller system
CN105946595A (en) * 2016-04-29 2016-09-21 百度在线网络技术(北京)有限公司 Automatic intelligent endurance method and device of unmanned vehicle
CN106601000A (en) * 2015-10-20 2017-04-26 中国科学院微电子研究所 Electronic control system and method for new energy automobile
CN107244265A (en) * 2017-06-26 2017-10-13 保定中兴田野新能源汽车科技有限公司 Electric coaching car whole-control system
CN107367982A (en) * 2017-07-17 2017-11-21 中山大学 Based on Embedded low-speed electronic car intelligent driving control system
CN108674222A (en) * 2018-05-07 2018-10-19 于秀芳 A kind of charging system and method for new-energy automobile
CN108871794A (en) * 2018-07-04 2018-11-23 北京踏歌智行科技有限公司 Mining automatic driving vehicle fault self-diagnosis method and device

Cited By (39)

* Cited by examiner, † Cited by third party
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CN103647307B (en) * 2010-02-15 2016-10-19 株式会社电装 Charge controller and navigator for plug-in vehicles
CN103647307A (en) * 2010-02-15 2014-03-19 株式会社电装 Charge controller and navigation device for plug-in vehicle
CN102248941A (en) * 2010-05-20 2011-11-23 开斋集团有限公司 Method and system for controlling vehicle
CN101885312A (en) * 2010-07-06 2010-11-17 中山大学 Electric automobile whole-control system
CN101961997A (en) * 2010-09-17 2011-02-02 安徽安凯汽车股份有限公司 Entire bus controller for series hybrid power buses
CN102019925A (en) * 2010-12-14 2011-04-20 湖南南车时代电动汽车股份有限公司 General control method of whole electric automobile controller based on singlechip
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CN103158648B (en) * 2011-12-19 2015-12-09 北汽福田汽车股份有限公司 A kind of On-board LAN structure for automobile and there is its automobile
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CN104149628B (en) * 2014-09-04 2016-05-04 吉林大学 A kind of drive system of electric automobile fault diagnosis Centralized Controller
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CN104635690A (en) * 2014-12-30 2015-05-20 北京新能源汽车股份有限公司 Whole vehicle control unit (VCU) integrated with gateway function of pure electric vehicle
CN104635690B (en) * 2014-12-30 2017-12-19 北京新能源汽车股份有限公司 The entire car controller of the pure electric automobile of integrated gateway function
CN106601000B (en) * 2015-10-20 2019-12-10 中国科学院微电子研究所 new energy automobile electric control system and method
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CN107244265A (en) * 2017-06-26 2017-10-13 保定中兴田野新能源汽车科技有限公司 Electric coaching car whole-control system
CN107367982A (en) * 2017-07-17 2017-11-21 中山大学 Based on Embedded low-speed electronic car intelligent driving control system
CN108674222A (en) * 2018-05-07 2018-10-19 于秀芳 A kind of charging system and method for new-energy automobile
CN108871794A (en) * 2018-07-04 2018-11-23 北京踏歌智行科技有限公司 Mining automatic driving vehicle fault self-diagnosis method and device

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