CN109435878A - A kind of electric vehicle double-core single-chip microcontroller entire car controller and its working method - Google Patents
A kind of electric vehicle double-core single-chip microcontroller entire car controller and its working method Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention discloses a kind of electric vehicle double-core single-chip microcontroller entire car controller and its working methods.The controller includes CPU module and analog signal receiving processing module connected to it, digital signal reception processing module, power module, CAN communication module, input module switch and switching output module；Working method are as follows: CPU module is used together with more CAN line communication systems, and MCU makes control to Full Vehicle System according to the content of information by CAN communication module real-time report status information and fault message, CPU module；BMS passes through CAN communication module real-time report battery status information, CPU module is closed or disconnects total positive/negative relay of BMS according to automobile control strategy and the battery status in CAN bus and motor status information, completes the open and close function of high tension loop.The present invention effectively reduces CAN linear load rate, meets demand of the electric vehicle to information processing rate and processing accuracy.
Description
Technical field
The present invention relates to electric vehicle engineering field, especially a kind of electric vehicle double-core single-chip microcontroller entire car controller and its work
Make method.
Background technique
Electric car (Electric Vehicles, EV) specifically includes that pure electric automobile (Pure Electric
Vehicles, PEV), hybrid vehicle (Hybrid Electric Vehicles, HEV) and fuel cell car (Fuel
Cell Vehicles, FCV).With traditional combustion engine automobile (Internal Combustion Engine Vehicles,
ICEV it) compares, electric car has pollution small, and high-efficient, noise is low, and structure is simple, facilitates intelligence, and energy diversification etc. is more
Aspect advantage.Thus electric car can reduce dependence of the mankind to conventional petroleum resource in future, or even replace completely.
Pure electric automobile can also efficiently inhibit as a kind of zero emission vehicle (Zero-emission Vehicles, ZEV) simultaneously
Problem of environmental pollution.
However since the transmission rate upper limit of the network of current high-speed CAN is about 500kbps, the network transmission of low speed CAN
Rate-limit is about 125kbps, while the performance of each node is irregular on automobile, and it is of note that
CAN bus is conditional to number of network node.When selecting traffic rate, the limitation of communication distance is also considered.Due to electricity
The continuous renewal of the continuous development of electrical automobile, various functions and system is expanded, and CAN specific electric load is caused constantly to aggravate, and in reality
The load factor of CAN line generally must not exceed 30% when use, and load factor is actual data transfer rate and can theoretically reach
The ratio of the message transmission rate arrived.Total inorganic nitrogen is the concept defined in time, illustrates resource in time
The case where use.Because transmission rate is usually to calculate by the second, message transmission rate had both been to transmit how many each second
BIT, load factor are also defaulted as the service condition of the position resource in one second time range.CAN bus is substantially a kind of serial ports
Communication, carries different signals by being modulated on the time line to the voltage value of each.Each node shared bus medium.
If some node needs to send a frame message, it needs while meeting two conditions: 1) bus is idle, i.e., does not have at present
There is any node sending message, node is expressed as in bus and monitors 11 continuous recessive positions；2) report sent needed for
Text wins ID arbitration, i.e., message priority is higher.One message is when attempting to send, it is necessary to which meeting above-mentioned two condition could be complete
At transmission.Here the problem of, is exactly:, can be because constantly existing if the relatively low node of a priority is transmitted messages outward when text
Fail in arbitration and causes to send delay；If postponing conference causes Communications failure.Load factor is higher, represents what needs were sent
Data are more, and comparatively the probability of low priority node generation communication delay is bigger.Only in bus free, sending node
Frame starting and subsequent frame ID could be sent in bus, only when frame ID wins arbitration, sending node possesses bus control right
And then message remainder is sent to bus, when the node to fail in arbitration concedes bus control right waiting bus free next time
It continues to attempt to send.Therefore current urgent problem to be solved are as follows: electric car CAN linear load rate is excessively high or even transmitted data rates
Reach the upper limit.
Summary of the invention
The purpose of the present invention is to provide a kind of electric vehicle double-core single-chip microcontroller vehicle controls that CAN linear load rate can be effectively reduced
Device processed and its working method, thus prevent electric car because CAN linear load rate it is excessively high caused by message send delay etc. a system
Column failure.
The technical solution for realizing the aim of the invention is as follows: a kind of electric vehicle double-core single-chip microcontroller entire car controller, including in
Central processor module, and the analog signal receiving processing module, the digital signal reception that connect with CPU module are handled
Module, power module, CAN communication module, input module switch and switching output module, in which:
Power module takes electricity from vehicle-mounted 12V battery；
Input module switch receives key signal, shift signal, charge switch signal, brake signal, and is input to number
Signal receiving processing module；
Switching output module output signal is to control relay；
Analog signal receiving processing module acquires accelerator pedal and brake pedal opening amount signal and battery voltage letter
Number；
CAN communication module is communicated with vehicle other equipment, and other equipment include electric machine controller MCU, battery management system
BMS and charging pile；
The CPU module is by analog signal receiving processing module, digital signal reception processing module, power supply mould
Block, CAN communication module, input module switch and switching output module link together, and carry out information processing and disseminating, constitute
Closed-loop communications control system.
Further, the analog signal receiving processing module receives interior accelerator opening angle signal, brake pedal
Opening amount signal, battery voltage signal, the digital signal reception processing module receive interior key signal, gear signal, fill
Establish OFF signal, brake signal by cable, and analog signal receiving processing module and digital signal receiving processing module are respectively equipped with input
Isolated location and signal reservations channel.
Further, the CPU module uses S12X SCM system, and the S12X SCM system is
Dual microprocessors.
Further, the CPU module is connected with a plurality of CAN bus, constructs CAN communication network structure.
A kind of working method of electric vehicle double-core single-chip microcontroller entire car controller, specific as follows:
(1) analog signal receiving processing module acquisition accelerator pedal and brake pedal opening amount signal and battery voltage
Signal；Input module switch receives key signal, shift signal, charge switch signal, brake signal, and is input to digital signal
Receiving processing module；
(2) collected signal is input to center by analog signal receiving processing module, digital signal reception processing module
Torque information is calculated in processor module, CPU module, and torque information is sent to motor control by CAN communication module
After device MCU processed, electric machine controller MCU receive corresponding control signal, corresponding movement is executed；
(3) electric machine controller MCU passes through CAN communication module real-time report status information and fault message, central processing unit
After module receives the every terms of information of electric machine controller MCU, control is made to Full Vehicle System according to the content of information；
(4) battery management system BMS by CAN communication module real-time report remaining capacity information, battery case total voltage and
Total current, battery system temperature information, battery output relay state, CPU module according to automobile control strategy and
Battery status and motor status information in CAN bus are completed high with being closed or disconnecting total positive/negative relay of BMS
Push back the open and close function on road.
Compared with prior art, the present invention its remarkable advantage are as follows: (1) by by electric vehicle double-core single-chip microcontroller entire car controller
It is applied in vehicle control unit of electric vehicle with more CAN bus communication systems, effectively reduces the load factor of CAN line, prevent electricity
Electrical automobile because CAN linear load rate it is excessively high caused by message send delay etc. a series of failures；(2) S12X series double-core is used
SCM system carries out message information processing, the speed and precision of message information processing is greatly improved, so that handling simultaneously
Two-wire message information is possibly realized；(3) structure is simple, processing speed is fast, is easily installed, and has a wide range of application, good compatibility.
Detailed description of the invention
Fig. 1 is the structure chart of electric vehicle double-core single-chip microcontroller entire car controller of the present invention.
Fig. 2 is the design flow diagram of double-core single-chip microcontroller VCU in the embodiment of the present invention.
Fig. 3 is the automotive communication network structure chart under traditional entire car controller.
Fig. 4 is the automotive communication network structure chart under electric vehicle double-core single-chip microcontroller entire car controller of the present invention.
Specific embodiment
In conjunction with Fig. 1, electric vehicle double-core single-chip microcontroller entire car controller of the present invention, including CPU module 1, and in
The analog signal receiving processing module 2 of the connection of central processor module 1, digital signal reception processing module 3, power module 4, CAN
Communication module 5, input module switch 6 and switching output module 7, in which:
Power module 4 takes electricity from vehicle-mounted 12V battery；
Input module switch 6 receives key signal, shift signal, charge switch signal, brake signal, and is input to number
Signal receiving processing module 3；
7 output signal of switching output module is to control relay；
Analog signal receiving processing module 2 acquires accelerator pedal and brake pedal opening amount signal and battery voltage letter
Number；
CAN communication module 5 is communicated with vehicle other equipment, and other equipment include electric machine controller MCU, battery management system
BMS and charging pile；
The CPU module 1 is by analog signal receiving processing module 2, digital signal reception processing module 3, power supply
Module 4, CAN communication module 5, input module switch 6 and switching output module 7 link together, and carry out information processing and disseminating,
Constitute closed-loop communications control system.
Further, the analog signal receiving processing module 2 receives interior accelerator opening angle signal, brake pedal
Opening amount signal, battery voltage signal, the digital signal reception processing module 3 receive interior key signal, gear signal, fill
Establish OFF signal, brake signal by cable, and analog signal receiving processing module 2 and digital signal receiving processing module 3 be respectively equipped with it is defeated
Enter isolated location and signal reservations channel.
Further, the CPU module 1 uses S12X SCM system, and the S12X SCM system is
Dual microprocessors.
Further, the CPU module 1 is connected with a plurality of CAN bus, constructs CAN communication network structure.
A kind of working method of electric vehicle double-core single-chip microcontroller entire car controller, specific as follows:
(1) analog signal receiving processing module 2 acquires accelerator pedal and brake pedal opening amount signal and battery voltage
Signal；Input module switch 6 receives key signal, shift signal, charge switch signal, brake signal, and is input to digital letter
Number receiving processing module 3；
(2) during collected signal is input to by analog signal receiving processing module 2, digital signal reception processing module 3
Torque information is calculated in central processor module 1, CPU module 1, and torque information is sent to by CAN communication module 5
After electric machine controller MCU, electric machine controller MCU receive corresponding control signal, corresponding movement is executed；
(3) electric machine controller MCU passes through 5 real-time report status information of CAN communication module and fault message, central processing unit
After module 1 receives the every terms of information of electric machine controller MCU, control is made to Full Vehicle System according to the content of information；
(4) battery management system BMS by 5 real-time report remaining capacity information of CAN communication module, battery case total voltage and
Total current, battery system temperature information, battery output relay state, CPU module 1 according to automobile control strategy with
And battery status in CAN bus and motor status information are completed with being closed or disconnecting total positive/negative relay of BMS
The open and close function of high tension loop.
With reference to the accompanying drawing and specific embodiment is described in further details the present invention.
Embodiment 1
In conjunction with Fig. 1, the present embodiment electric vehicle double-core single-chip microcontroller entire car controller, including CPU module, Yi Jiyu
Analog signal receiving processing module, digital signal reception processing module, power module, the CAN of CPU module connection are logical
Believe module, input module switch and switching output module；
The CPU module is by analog signal receiving processing module, digital signal reception processing module, power supply mould
Block, CAN communication module, input module switch and switching output module link together, and carry out information processing and disseminating, constitute
Closed-loop communications control system；
Using double-core S12X series electric vehicle double-core SCM system, significantly due to its information processing rate and processing accuracy
It improves, the message information of multithreading CAN line can be received and processed simultaneously, then carry out communication shunting using more CAN lines, thus
Compared to traditional CAN communication network, the load factor of vehicle-mounted CAN line is greatly reduced.
Specifically, the analog signal receiving processing module and digital signal receiving processing module respectively with it is corresponding interior
Accelerator opening angle signal, brake pedal opening amount signal, battery voltage signal, key signal, gear signal, charge switch letter
Number, brake signal is connected with other signals.The analog signal receives processing module and digital signal receives processing module also
Equipped with input isolated location and signal reservations channel.
Specifically, the CPU module uses S12X SCM system, the S12X SCM system
For dual microprocessors.
Specifically, the CPU module is connected with a plurality of CAN bus, constructs CAN communication network structure, effectively
Reduce CAN bus load factor.
Technical solution specific implementation is as follows:
One, in conjunction with Fig. 2, double-core single-chip microcontroller VCU mentality of designing:
In order to realize the major function of VCU, it is necessary to be realized by two aspects of hardware and software of VCU.Software control
Strategy is the key that realize expectation function, it is necessary to correlation function, but the defect that hardware has its intrinsic are realized by hardware: once
After Hardware Design molding, it is not easy to modify；Software program can input secondaryly single-chip microcontroller with up to ten thousand, be conducive to the liter of system
Grade.In fact, rationally applying existing hardware on the basis of correctly configuration hardware, software work amount can be greatly reduced；Together
When, the deficiency of hardware can also be filled up by improving software, be brought great convenience to research and development, maintenance and maintenance, so software is core, firmly
Part is basis, and indispensable function and operating conditions according to system is analyzed, and the mentality of designing of the VCU is as follows:
1) CAN bus at least more than 2 tunnels, it is proposed that 3 tunnels.
2) reliably working time span guarantees to be greater than vehicle service life.
3) high reliability is needed in view of equipment, it requires dual system independence and is cooperated, and is occurring one
When failure of uniting, another system can guarantee that Full Vehicle System works.
4) it can open and select motor, energy-storage system, the external all kinds of operating conditions selection for filling energy equipment to driver.
5) possess external diagnosis interface, inline diagnosis can be carried out by external equipment.
6) multiplexed signal sampling and the output of multichannel power control.
Two, the structure of double-core single-chip microcontroller VCU:
Automotive communication network structure under traditional entire car controller is as shown in figure 3, the structure of double-core single-chip microcontroller VCU passes through such as
Fig. 4: receive processing module, at digital signal reception including CPU module and the analog signal being connected with central processing unit
Manage module, power module, CAN communication module, switching input module and switching value output module.The major function of its each module
It is as follows:
1) power module takes electricity from vehicle-mounted 12V battery；
2) switching input module received signal mainly has key signal, shift signal, brake switch signal etc.；
3) switching value output signal mainly controls relay, and meaning is slightly different in different Full Vehicle Systems, generally
In the case of control such as water pump relay and PTC relay；
4) Analog input mModule acquisition accelerator pedal and brake pedal opening amount signal and battery voltage signal etc.；
5) CAN module is responsible for communicating with vehicle other equipment, and capital equipment has electric machine controller MCU, battery management system
BMS and charger etc..
Three, vehicle communication network management:
Full Vehicle System is linked together each sub-control system by CAN communication network.It is entire that VCU plays coordinated management
The function of communication network is the communication service end of each sub- equipment.
Four, vehicle drive system controls:
The vehicle drive system of pure electric vehicle is made of motor and electric machine control system, and by CAN bus mode with it is whole
Vehicle network communication.
1) VCU obtains last torque by torque calculation by signals such as collected pedal opening signal and gears
Information.Torque information is sent to MCU by VCU by CAN bus, after MCU receives corresponding control signal, executes corresponding dynamic
Make.
2) according to the operation conditions of automobile, motor operation mode is divided into electric model and power generation mode.It is whole under electric model
Vehicle operates in driving condition, and automobile belongs to driving status；Vehicle, which operates in, under power generation mode slides or on-position, realizes braking
The feedback of energy.
3) under operation, MCU is being electric machine control system in real time to VCU uploaded state information and fault message
System makes timely processing when breaking down.It, can be according to the content of information to Full Vehicle System after VCU receives the every terms of information of MCU
Make reasonable control.
Five, the energy-optimised management of vehicle:
The exclusive source of whole pure electric vehicle energy is power battery pack, passes through BMS orderly management.VCU passes through bus
It is communicated with BMS.
1) BMS can be reported to VCU remaining capacity information, battery case total voltage and total current, battery system temperature information,
Battery output relay state etc..
2) VCU be closed according to automobile control strategy and the battery status in bus and motor status information or
The total positive/negative relay for disconnecting BMS, completes the open and close function of high tension loop.
3) compared with conventional fuel oil car, electric car can be realized braking energy feedback function.It is slided when vehicle is in slow down
When capable or on-position, VCU controls automobile and generates regenerative braking moment, makes electric power generation, and the electric energy that motor issues is recharged
Into power battery, to realize effective Brake energy recovery.
Six, fault detection processing and diagnostic function:
Troubleshooting and diagnostic function are also the important component of VCU control strategy, are even arrived in the size of code of VCU
Up to 60% or more.
Complete vehicle fault detection processing
The failure of VCU is broadly divided into sensor (accelerator pedal sensor) failure, relay (AIR COND RLY Air Conditioner Relay etc.) failure
And CAN bus failure.Sensor fault can carry out detection processing in terms of hardware and software two.CAN bus failure mainly has always
The disengaging of line node and load too high etc..According to the severity of failure, failure is divided into 2 grades, i.e. 2 kinds of fault modes.Hair
Certain raw failure enters corresponding failure mode with regard to vehicle operation.
Diagnostic function
Electronic unit is many on electric car, is just difficult to quickly detected when certain devices break down.In order to
Maintenance personal can quickly and accurately determine location of fault, and VCU is generally assisted using based on UDSISO15765 on electric car
View) diagnostic service function.
Seven, hardware system:
It need to be calculated according to the chassis of vehicle, the quantity of vehicle body associated components and control content, it is desirable that the hardware of VCU must expire
It is enough lower interface quantity, type and driving capability:
1) the high effectively effective switch acquisition low with 10 tunnels in 10 tunnels.Vehicle body upper switch situation can be acquired, VCU
Judged or be correspondingly processed according to specific on-off state.
2) 3 tunnel high-speed CAN (CAN2.0B).Electrical vehicle network bus protocol Primary Reference SAEJ1939 makes
It is fixed, that is, made on the basis of J1939 and meet the communications protocol that various electric vehicle controls need.VCU and the external world
Connection is exactly the collection realized by CAN network, including data, transmitting.
3) 8 road AD acquisition (wherein defining 4 tunnels is voltage acquisition, and 4 tunnels are electrical resistance collection).Voltage is that 0~30V acquires model
It encloses, resistance is 0~10K Ω.The analog signals such as pedal signal, brake signal can be acquired, acquisition data are by corresponding
Processing, and external equipment is sent to according to specific agreement.
4) 10 tunnel power outputs (maximum 2A output).The maximum exportable 2A of every road power or so electric current, totally 10 tunnel can band
The load of 40W.In use, it should be avoided and operate at full capacity.
5) 2 tunnel+5V power supplys export.The output of+5V power supply, can be supplied to pedal or other equipment.
6) 1 road K-LINE.VCU can be diagnosed and be demarcated by K line, data can also carried out to individual equipment and looked into
It askes.
7) dual power supply, dual system work (recommending to use) are supported.Using master-slave control method, under normal circumstances, by host
To handle the information of vehicle.When encounter host can not work (catastrophe failure out, send faulting instruction) when, slave makes sound at once
Host work should be taken over, whole system is enable to operate normally.
Eight, VCU performance requirement:
To meet use demand of the VCU under vehicle environment, need to have the various aspects of performance of controller required.VCU
Main performance requirements it is as shown in table 1, specific performance require can refer to " VCU technical conditions ".
Table 1VCU main performance requirements
The controller, should using the highly integrated automotive grade microprocessor for meeting automobile use environment temperature and vibration requirement
Controller has the power input range of wider 9~36V, meets the low-voltage system power source voltage fluctuation requirement of vehicle, has simultaneously
There is preferable versatility, adapts to the application of 12V and 24V vehicle electric system.Controller uses the ECU interface of standard, has good
Water proof and dust proof performance.
Present invention accomplishes electric vehicles at this stage to the various aspects demand of information processing rate and processing accuracy, in electric vehicle
Various types of signal can carry out flexible configuration by type and be acquired and handle by corresponding analog and digital signal processing module.
Claims (5)
1. a kind of electric vehicle double-core single-chip microcontroller entire car controller, which is characterized in that including CPU module (1), Yi Jiyu
The analog signal receiving processing module (2) of CPU module (1) connection, digital signal reception processing module (3), power supply mould
Block (4), CAN communication module (5), input module switch (6) and switching output module (7), in which:
Power module (4) takes electricity from vehicle-mounted 12V battery；
Input module switch (6) receives key signal, shift signal, charge switch signal, brake signal, and is input to digital letter
Number receiving processing module (3)；
Switching output module (7) output signal is to control relay；
Analog signal receiving processing module (2) acquires accelerator pedal and brake pedal opening amount signal and battery voltage signal；
CAN communication module (5) is communicated with vehicle other equipment, and other equipment include electric machine controller MCU, battery management system
BMS and charging pile；
The CPU module (1) by analog signal receiving processing module (2), digital signal reception processing module (3), electricity
Source module (4), CAN communication module (5), input module switch (6) and switching output module (7) link together, and carry out information
Processing and transmitting, constitute closed-loop communications control system.
2. electric vehicle double-core single-chip microcontroller entire car controller according to claim 1, which is characterized in that the analog signal connects
It receives processing module (2) and receives interior accelerator opening angle signal, brake pedal opening amount signal, battery voltage signal, the number
Word signal receiving processing module (3) receives interior key signal, gear signal, charge switch signal, brake signal, and simulates
Signal receiving processing module (2) and digital signal receiving processing module (3) are respectively equipped with input isolated location and signal reservations are logical
Road.
3. electric vehicle double-core single-chip microcontroller entire car controller according to claim 1 or 2, which is characterized in that the centre
It manages device module (1) and uses S12X SCM system, the S12X SCM system is dual microprocessors.
4. electric vehicle double-core single-chip microcontroller entire car controller according to claim 1 or 2, which is characterized in that the center
Processor module (1) is connected with a plurality of CAN bus, constructs CAN communication network structure.
5. a kind of working method of electric vehicle double-core single-chip microcontroller entire car controller, which is characterized in that specific as follows:
(1) analog signal receiving processing module (2) acquisition accelerator pedal and brake pedal opening amount signal and battery voltage letter
Number；Input module switch (6) receives key signal, shift signal, charge switch signal, brake signal, and is input to digital letter
Number receiving processing module (3)；
(2) during collected signal is input to by analog signal receiving processing module (2), digital signal reception processing module (3)
Torque information is calculated in central processor module (1), CPU module (1), and torque information passes through CAN communication module (5)
It is sent to electric machine controller MCU and executes corresponding movement after electric machine controller MCU receives corresponding control signal；
(3) electric machine controller MCU passes through CAN communication module (5) real-time report status information and fault message, central processing unit mould
After block (1) receives the every terms of information of electric machine controller MCU, control is made to Full Vehicle System according to the content of information；
(4) battery management system BMS passes through CAN communication module (5) real-time report remaining capacity information, battery case total voltage and total
Electric current, battery system temperature information, battery output relay state, CPU module (1) according to automobile control strategy with
And battery status in CAN bus and motor status information are completed with being closed or disconnecting total positive/negative relay of BMS
The open and close function of high tension loop.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113110372A (en) * | 2021-03-19 | 2021-07-13 | 江苏大学 | Test system and test method for complete machine controller of electric tractor |
| CN114013554A (en) * | 2021-10-28 | 2022-02-08 | 南京懂玫驱动技术有限公司 | Drive assembly management system, fault detection method and electric power-assisted bicycle |
| CN114312626A (en) * | 2022-01-17 | 2022-04-12 | 雷沃工程机械集团有限公司 | Power management method and module for engineering vehicle |
| CN114859785A (en) * | 2022-05-06 | 2022-08-05 | 重庆标能瑞源储能技术研究院有限公司 | Novel engineering machine tool BMS controller |
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| CN114859785A (en) * | 2022-05-06 | 2022-08-05 | 重庆标能瑞源储能技术研究院有限公司 | Novel engineering machine tool BMS controller |
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