CN101000496A - Subcontroller for control system of vehicle fuel cell distribution type - Google Patents
Subcontroller for control system of vehicle fuel cell distribution type Download PDFInfo
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- CN101000496A CN101000496A CNA2007100005378A CN200710000537A CN101000496A CN 101000496 A CN101000496 A CN 101000496A CN A2007100005378 A CNA2007100005378 A CN A2007100005378A CN 200710000537 A CN200710000537 A CN 200710000537A CN 101000496 A CN101000496 A CN 101000496A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A sub-controller of car fuel-battery distributed control system consists of C8052F040 digital kernel monolithic computer, CAN interface filtering circuit, digital input expansion circuit, digital output expansion circuit, A/D conversion circuit and current-voltage conversion circuit.
Description
Technical field:
The sub-controller that is used for fuel battery distributed controlling system for vehicle belongs to the Fuel Cell Control System technical field, relates in particular to vehicle fuel battery control system technical field.
Background technology:
Fuel cell system is the main power source of fuel battery city carriage car load, and is very big to performance, control and the security implication of car load.Must quite deep understanding be arranged to the inside principle and the performance of fuel cell system, obtain fuel cell key components and parts performance data, the integrated experience of accumulation fuel cell system.And the integrated and research of fuel cell system be unable to do without Electronic Control, be unable to do without control system.At present, Fuel Cell Control System is just developed to the dcs direction by Centralized Control System, be about to a large amount of input/output tasks and concrete control task and from original centralized controller, separate and be given to sub-controller, and give special acquisition node the acquisition tasks that part of functions is concentrated.Fuel cell distributed control system is connected to form with the CAN network by a master controller and plurality of sub controller and acquisition node.
Sub-controller is directly towards each subsystem of fuel cell and sensor, actuator, thereby occupies critical role in dcs.Design cost lower, can realize that the sub-controller that local concrete control task is carried out in a large amount of input and output and the system works mode instruction that can send through the CAN communication network by master controller and steering order be extremely significant, help reducing master controller burden, allow master controller mainly be engaged in extensive algorithm task and system monitoring is fault handling, and make the software and hardware structure of Fuel Cell Control System more clear, realization is to the modularization exploitation of fuel cell subsystem, improve development efficiency greatly, reduce the exploitation human cost.
Summary of the invention:
The objective of the invention is to, a kind of sub-controller that is used for fuel battery distributed controlling system for vehicle is provided, this sub-controller IO channel number is numerous, can finish and being connected and the closed-loop control task of big quantity sensor, actuator.
The invention is characterized in, contain core single-chip microcomputer, CAN interface filtering circuit, digital quantity input expander, digital quantity out-expander, A/D convertor circuit, current/charge-voltage convertor;
CAN interface filtering circuit is connected with fuel cell system CAN network with the CAN port of core single-chip microcomputer respectively;
The digital quantity input expander, input end connects the digital sensors of fuel cell, and output terminal connects the digital quantity input end of core single-chip microcomputer;
The digital quantity out-expander, input end connects the digital quantity output terminal of core single-chip microcomputer, and output terminal connects the inductive load of fuel cell;
A/D convertor circuit, input end connects the analog sensor of fuel cell, and output terminal connects the analog quantity input end of core single-chip microcomputer;
Current/charge-voltage convertor, input end connects the analog quantity output terminal of core single-chip microcomputer, and output terminal connects the DC/DC and the frequency converter of fuel cell.
Described core single-chip microcomputer is a C8051F040 digital core single-chip microcomputer.
Described digital quantity input expander contains the secondary low pass capacitance-resistance filter that one-level low pass capacitance-resistance filter, chip 74HC14 and resistance R DI51 that low speed light constitutes every TLP121, by resistance R DI31 and capacitor C DI21 and capacitor C DI31 constitute.
Described digital quantity out-expander adopts integrated low limit driver TLE6228.
Described voltage one current converter circuit adopts the AD694 chip.
The active power filtering module that described A/D convertor circuit contains the plectrum switch and is made up of amplifier LM224 and resistance and electric capacity; The plectrum switch is the plectrum switch that is used to select input of current mode analog sensor signal or the input of voltage-type analog sensor signal.
Evidence, the present invention and sensor, actuator wiring are simple, and Electro Magnetic Compatibility is good, and control structure is clear, is highly suitable for the research and development of fuel cell distributed control system and satisfies the demand of fuel cell development.
Description of drawings:
Fig. 1 is a fuel cell distributed control system knot block diagram.
Fig. 2 is the sub-controller hardware block diagram.
Fig. 3 is the sub-controller circuit theory diagrams.
Fig. 4 is the A/D convertor circuit schematic diagram.
Fig. 5 is digital quantity input expander figure.
Fig. 6 is current/charge-voltage convertor figure.
Fig. 7 is digital quantity out-expander figure.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described further:
Figure 1 shows that the fuel cell distributed control system structured flowchart.Fuel cell distributed control system includes fuel cell system CAN network and monolithic voltage is gathered the CAN network.Node can be divided into master controller, sub-controller and acquisition node three classes.
Master controller links to each other with other nodes of car load CAN network by one road CAN and constitutes car load CAN network, and linking to each other with air supply system sub-controller, hydrothermal system sub-controller, electrical system sub-controller, temperature acquisition node and monolithic voltage statistics node by another road CAN constitutes fuel cell system CAN network.
Sub-controller is finished and being connected and the closed-loop control task of big quantity sensor, actuator, and its arithmetic capability is less demanding, but the IO channel number is numerous, therefore adopts around 8 bit digital cores of the resourceful C8051F040 design of I/O.The principle that the distribution of needs consideration fuel cell system CAN network node is set of sub-controller, think and reduce bus load as far as possible, reduce degree of coupling between node, generally can be equipped with sub-controller separately to each subsystem of fuel cell, the subsystem that fuel cell comprises has: air system, hydrogen gas system, hydrothermal system and electrical system; Two for making wiring simple, and node should be approaching as far as possible with coupled corresponding sensor, actuator; Principle three is that the close link of function can be concentrated and is arranged in same intranodal.Because it is bigger that hydrogen gas system and air system are controlled coupling each other, for improving control safety and reducing offered load, the control of hydrogen subsystem and air subsystem is united two into one, open up the air feed child node, so just obtained air supply system sub-controller, hydrothermal system sub-controller and electrical system sub-controller.
Figure 2 shows that the sub-controller hardware block diagram.The hardware design of air supply system sub-controller, hydrothermal system sub-controller and electrical system sub-controller is identical.Sub-controller is made of C8051F040 digital core, CAN interface filtering circuit, digital quantity input expander, digital quantity out-expander, A/D convertor circuit, voltage one current converter circuit.Among the figure 1,2,3,4,5 represent the input/output signal of C8051F040 digital core.The C8051F040 digital core circuitry links to each other with CANRX with the CAN controller transmitting-receiving pin CANTX of CAN interface filtering circuit by single-chip microcomputer C8051F040; The C8051F040 digital core circuitry links to each other by digital quantity input port DIN1～DIN12 with the digital quantity input expander; The C8051F040 digital core circuitry links to each other by digital quantity output port DOUT1～DOUT12 with the digital quantity out-expander; The C8051F040 digital core circuitry links to each other by analog quantity input port AIN1～AIN8 with A/D convertor circuit; The C8051F040 digital core circuitry links to each other with AO2 with the analog quantity output pin AO1 of current/charge-voltage convertor by single-chip microcomputer C8051F040.The digital sensors that links to each other with sub-controller is mainly level sensor, temperature switch and pressure switch; The inductive load that links to each other with sub-controller is mainly control water route and the solenoid valve of gas path on-off and the contactor in the electrical system; The analog sensor that links to each other with sub-controller is mainly various pressure transducers; DC/DC that links to each other with sub-controller and frequency converter are mainly used in control water pump, cooling fan etc.Sub-controller comprises air supply system sub-controller, hydrothermal system sub-controller and electrical system sub-controller, and each sub-controller only connects sensor, inductive load, DC/DC and the frequency converter that its corresponding subsystem (air supply system, hydrothermal system and electrical system) relates to.
Figure 3 shows that the sub-controller circuit theory diagrams, sub-controller adopts the C8051F040 digital core circuitry, and C8051F040 digital core circuitry figure is made up of single-chip microcomputer C8051F040, external memory storage expansion module, external crystal-controlled oscillation module, a lantern adorned with a revolving circle of paper horses indicating module, external voltage reference configuration module, reset circuit, JTAG DLL (dynamic link library), EEPROM outer memory module.The external memory storage expansion module is made up of latch 74LV373 and RAM chip HY628100B, between two chips and they with the connected mode of single-chip microcomputer C8051F040 be: low eight bit data line-address wire multiplexing line of C8051F040 links to each other with the input end of 74LV373 and the data line pin of HY628100B; The high eight-bit data line of 74LV373 output terminal and C8051F040 links to each other with the high eight-bit address wire with low eight of HY628100B respectively; The correct sequential that be to keep the multiplex mode expansion, the latch enable control pin ALE of C8051F040 links to each other with the Enable Pin ALE of 74LV373, its/WR and RD pin enable and read enable pin and link to each other with writing of HY628100B respectively.The external crystal-controlled oscillation module is made up of external crystal-controlled oscillation Crystal, resistance R CRY and capacitor C 11 and C12, and the external crystal-controlled oscillation module links to each other with XTAL2 by external crystal-controlled oscillation pin XTAL1 with single-chip microcomputer C8051F040.The a lantern adorned with a revolving circle of paper horses indicating module is made up of 8 resistance R LED1～RLED8 and 8 light emitting diode H1～H8, and a lantern adorned with a revolving circle of paper horses indicating module links to each other by 8 digital two-port LED1～LED8 with single-chip microcomputer C8051F040.LED1～LED8 port essence is C8051F0405 port P5.0～P5.7.The external voltage reference configuration module is made up of reference voltage source chip REF03, capacitor C 1～C4 and wire jumper JP1, and the external voltage reference configuration module links to each other by external voltage reference source pin VREF_use with single-chip microcomputer C8051F040.Analog quantity input and output voltage reference can adopt internal reference or outside reference, and internal reference is by software arrangements, and through the output of VREF pin, outside reference is realized based on REF03.Input is exported the 2.5V voltage reference through the 5V of local 10 μ F tantalum electric capacity and 0.1 μ F ceramic disc capacitor filtering between 2 pin of REF03 and 4 pin.The selection of voltage reference is realized by wire jumper JP1.The VREFD of C8051F040, VREF0 and VREF2 pin are respectively analog quantity output, 12 analog quantity inputs and 8 analog quantity load modules.Reset circuit is made up of reset switch Reset, resistance R RT1 and RRT2 and capacitor C 5 and C6, and reset circuit and single-chip microcomputer pass through reset pin
Link to each other.The JTAG DLL (dynamic link library) is the double connector JTAG of standard 10 pins, the JTAG DLL (dynamic link library) links to each other by TMS, TDO, TDI and TCK with single-chip microcomputer C8051F040, TMS, TDO, TDI and TCK are respectively the jtag test model selection line of JTAG DLL (dynamic link library), test data output line, test data incoming line and test clock line.The EEPROM outer memory module is eeprom chip AT25256, the EEPROM expanded circuit with the connected mode of single-chip microcomputer C8051F040 is: NSS, the MOSI of the SPI module of C8051F040, MISO and GND pin respectively with AT25256 /CS, SO ,/WP links to each other with the GND pin, is respectively chip select line, primary module DOL Data Output Line, from module data output line and signal ground.In conjunction with Fig. 2, port P3.0～P3.3 of single-chip microcomputer C8051F040 and AIN0.0～P0.3 are configured to 8 12 analog quantity input pin: AIN1～AIN8, link to each other with A/D change-over circuit output terminal; Port P1.0～P1.7 of single-chip microcomputer C8051F040 and P4.1～P4.4 are configured to 12 digital quantity input pin: DIN1～DIN12, link to each other with the output terminal of digital quantity input expander; Port P2.0～P2.7 of single-chip microcomputer C8051F040 and P3.4～P3.7 are configured to 12 digital quantity output pin: DOUT1～DOUT12, the input end that links to each other with the digital quantity out-expander; Port DAC0～DAC1 of single-chip microcomputer C8051F040 is analog quantity output (voltage) port, is denoted as analog quantity output pin: AO1～AO2, links to each other with the input end of current/charge-voltage convertor.
Figure 4 shows that A/D convertor circuit figure.AI1 is the input of analog sensor signal among the figure, and AIN1 is a single-chip simulation amount input pin, will be through the processing of A/D convertor circuit from AI1 to AIN1.RAI1 is a current sampling resistor, and whether the one end can be selected afterwards to link to each other with isolation by plectrum switch JP1, if analog sensor is a current mode, then links to each other, if analog sensor is a voltage-type, does not then link to each other.In order to guarantee Electro Magnetic Compatibility, controller also links to each other with signal return wire AI1 HL except the sensor signal incoming line with analog sensor, press analog sensor kind difference, AI1 HL isolates back 24V, also may be to isolate ground, back, can realize compatible by configuration to wire jumper JP21.Amplifier LM224 and resistance R AI11, CAI1 form the active power filtering module.DAI11 and DAI21 are Zener diode, are used for overvoltage protection.The sub-controller design has 8 road AD input, 8 road A/D convertor circuits are identical on device connection and device parameters, shown in Figure 4 only is one road A/D convertor circuit figure, other 7 tunnel differences only are: the tail tag of device and network label is different, and for example the network label and the single-chip simulation amount input pin network label of the input of analog sensor signal should be AI2～AI8 and AIN2～AIN8.
Figure 5 shows that digital quantity input expander figure.DI1 is the input of digital sensors signal among the figure, and DIN1 is a single-chip microcomputer digital quantity input pin.24V before network label Power24+ representative is isolated also is the supply voltage of digital sensors.RDI11, RDI21 and low speed light also are the isolation forward part of digital quantity input expander every the collector load of the input end light emitting diode formation digital sensors of TLP121.Low speed light is every the isolation of TLP121 realization to the digital quantity input, the digital quantity input expander is isolated the back and is made up of four parts: the one-level low pass capacitance-resistance filter that RDI31 and CDI21 constitute, reverse Schmidt's passage of chip 74HCl4, secondary low pass capacitance-resistance filter that RDI51 and CDI31 constitute and the digital quantity input indicator that is made of light emitting diode HDI1 and resistance R DI41.The sub-controller design has the input of 12 road digital quantities, and the digital sensors signal fan-in network label of other 11 road digital quantity input expanders is DI2～DI12, and single-chip microcomputer digital quantity input pin is DIN2～DIN12.
Figure 6 shows that current/charge-voltage convertor figure.The chip that adopts is AD694.Change analog quantity output into the magnitude of current from voltage and can improve Electro Magnetic Compatibility, increase the scope of application of analog quantity output.AO1 is the voltage input, enters the input end+SIG in the same way of AD694 inlet amplifier through single order capacitance-resistance low-pass filtering, and its reverse input end links to each other with feedback end FB to constitute voltage follower, improves the driving force of voltage.4 pin, 9 pin all with 5 pin () thus link to each other input and output be configured in 0～2V and 4～20mA respectively, and be linear corresponding relation.The ceramic disc capacitor of 0.1 μ F between 13 pin and 14 pin with the band width configuration of AD694 at 1.768kHz.Output terminal constitutes the filtering of 3 grades of L-T-L LC with magnetic bead and electric capacity, and is furnished with the Zener diode DAO11 and the DAO21 of current-limiting resistance RAO21 and anti-overvoltage.
Figure 7 shows that digital quantity out-expander figure.In fuel cell system, need mainly contain contactor, relay and solenoid valve with the inductive load that digital quantity drives.The digital quantity out-expander has used integrated low limit driver TLE6228, every TLE6228 has 4 and drives passage TSL1～TSL4, the digital quantity out-expander of sub-controller comprises 3 TLE6228, so sub-controller can be realized the output of 12 road digital quantities.That shown in Figure 7 is a slice TLE6228, the output of four road digital quantities.No. four single-chip microcomputer digital quantity output ports among the figure are DOUT1～DOUT4, and it is DO11～DO4 that inductive load drives port.Be output as example with first via digital quantity in scheming, DOUT1 is a single-chip microcomputer digital quantity output port, and on the plate between the 5V power supply VCC series resistor RDO11 and low speed light every the input end light emitting diode of TLP121, the digital core port is configured to the open-drain way of output, chip power-consumption can be reduced, and compatibility can be realized 3.3V (C8051F040) and two kinds of single-chip microcomputer level of 5V (MC68376).The emitter-base bandgap grading of TLP121 output terminal meets low limit MOS driver TSL1, the corresponding metal-oxide-semiconductor conducting of single-chip microcomputer digital core port low level like this, this is because consider that powered on moment single-chip microcomputer pin status for high, adopts such configuration can guarantee to be in the normal state when driven actuator powers in system.5V before MOS_VCC isolates.TLE6228 realizes and the isolation of Single Chip Microcomputer (SCM) system with 5V power supply before isolating, has improved Electro Magnetic Compatibility.ZSL1 is a Zener diode, protection metal-oxide-semiconductor gate pole.
The single-chip microcomputer C8051F040 that sub-controller is used is integrated CAN controller in the sheet, sheet is outer also will to have the CAN interface circuit except CAN filtering.CAN filtering circuit and CAN interface filtering circuit all are known circuits commonly used in the fuel cell CAN network, only do simple the introduction here.The CAN interface circuit comprise high-speed light that the CAN receiving and transmitting signal of C8051F040 is isolated every 6N137 and the CAN receiving and transmitting signal after will isolating be treated to the CAN transceiver 82C250 of CAN network differential signal.High-speed light is standard configuration every 6N137 and CAN transceiver 82C250 circuit, can be referring to its device handbook.The CAN filtering circuit connects and composes the standard common-mode filter network with common mode inductance and filter capacitor.The acp chip that LM2576 and filtering circuit are selected for use is the LM2576-5.0 of 5V version, and the acp chip that AS1117 and filtering circuit are selected for use is the AS1117-3.3 of 3.3V version.The constituted mode of its filtering circuit is a preferred circuit, all can be referring to handbook during it.The filtering of π type LC is the standard π type LC filtering that constitutes with common inductance and ceramic disc capacitor.
The pattern of cooperatively interacting between sub-controller and the master controller is: master controller carries out fault diagnosis according to the driver intention that sub-controller and acquisition node information feedback and car load network transmit, decision systems mode of operation and controlled target, each sub-controller strictness are operated in the system works pattern of master controller decision and use local algorithm that corresponding controlled quentity controlled variable is maintained controlled target.The algorithm of burdensome obtains carrying out at master controller, most of sensor, actuator with have the sub-controller that enriches the I/O resource and be connected, key sensor and actuator can be realized with master controller on a small quantity.Sub-controller is closed loop to local controlled quentity controlled variable by following the algorithm that main controller controls target mode adjusts, be corresponding signals collecting, execution algorithm and all finish in the locality by the arithmetic result actuate actuators, both guarantee the reduction of the degree that interdepends between each node, reduced bus load again.
Claims (6)
1, the sub-controller that is used for fuel battery distributed controlling system for vehicle, it is characterized in that, contain core single-chip microcomputer, CAN interface filtering circuit, digital quantity input expander, digital quantity out-expander, A/D convertor circuit, voltage-current converter circuit; CAN interface filtering circuit is connected with fuel cell system CAN network with the CAN port of core single-chip microcomputer respectively;
The digital quantity input expander, input end connects the digital sensors of fuel cell, and output terminal connects the digital quantity input end of core single-chip microcomputer;
The digital quantity out-expander, input end connects the digital quantity output terminal of core single-chip microcomputer, and output terminal connects the inductive load of fuel cell;
A/D convertor circuit, input end connects the analog sensor of fuel cell, and output terminal connects the analog quantity input end of core single-chip microcomputer;
Voltage-current converter circuit, input end connects the analog quantity output terminal of core single-chip microcomputer, and output terminal connects the DC/DC and the frequency converter of fuel cell.
2, the sub-controller that is used for fuel battery distributed controlling system for vehicle as claimed in claim 1 is characterized in that, described core single-chip microcomputer is a C8051F040 digital core single-chip microcomputer.
3, the sub-controller that is used for fuel battery distributed controlling system for vehicle as claimed in claim 1, it is characterized in that, described digital quantity input expander contains the secondary low pass capacitance-resistance filter that one-level low pass capacitance-resistance filter, chip 74HC14 and resistance R DI51 that low speed light constitutes every TLP121, by resistance R DI31 and capacitor C DI21 and capacitor C DI31 constitute.
4, the sub-controller that is used for fuel battery distributed controlling system for vehicle as claimed in claim 1 is characterized in that, described digital quantity out-expander adopts integrated low limit driver TLE6228.
5, the sub-controller that is used for fuel battery distributed controlling system for vehicle as claimed in claim 1 is characterized in that, described current/charge-voltage convertor adopts the AD694 chip.
6, the sub-controller that is used for fuel battery distributed controlling system for vehicle as claimed in claim 1 is characterized in that, the active power filtering module that described A/D convertor circuit contains the plectrum switch and is made up of amplifier LM224 and resistance and electric capacity; Described plectrum switch is the plectrum switch that is used to select input of current mode analog sensor signal or the input of voltage-type analog sensor signal.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715439A (en) * | 2012-09-28 | 2014-04-09 | 南京慧宇能源科技有限公司 | Control system used for hydrogen energy fuel cell below 10kW |
| CN105549489A (en) * | 2016-01-29 | 2016-05-04 | 天津天邦科技有限公司 | Variation value input expansion device |
| CN105809764A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院沈阳自动化研究所 | Method for transmitting patrol inspection data of proton exchange membrane fuel cell based on CAN bus |
| CN106525318A (en) * | 2016-12-16 | 2017-03-22 | 山东金洲科瑞节能科技有限公司 | Bus-type pressure measuring device |
| CN110196565A (en) * | 2019-07-08 | 2019-09-03 | 安徽江淮汽车集团股份有限公司 | A kind of fuel cell car controller |
| CN110221570A (en) * | 2018-03-01 | 2019-09-10 | 弘允新能源（上海）有限公司 | A kind of general purpose controller of fuel cell |
| CN116404206A (en) * | 2023-06-05 | 2023-07-07 | 西北工业大学 | Control device and control method for cathode open hydrogen fuel cell system |
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2007
- 2007-01-12 CN CNA2007100005378A patent/CN101000496A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715439A (en) * | 2012-09-28 | 2014-04-09 | 南京慧宇能源科技有限公司 | Control system used for hydrogen energy fuel cell below 10kW |
| CN105809764A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院沈阳自动化研究所 | Method for transmitting patrol inspection data of proton exchange membrane fuel cell based on CAN bus |
| CN105809764B (en) * | 2014-12-30 | 2018-06-26 | 中国科学院沈阳自动化研究所 | Proton Exchange Membrane Fuel Cells inspection data transmission method based on CAN bus |
| CN105549489A (en) * | 2016-01-29 | 2016-05-04 | 天津天邦科技有限公司 | Variation value input expansion device |
| CN106525318A (en) * | 2016-12-16 | 2017-03-22 | 山东金洲科瑞节能科技有限公司 | Bus-type pressure measuring device |
| CN106525318B (en) * | 2016-12-16 | 2022-07-01 | 山东金洲科瑞节能科技有限公司 | Bus type pressure measuring device |
| CN110221570A (en) * | 2018-03-01 | 2019-09-10 | 弘允新能源（上海）有限公司 | A kind of general purpose controller of fuel cell |
| CN110196565A (en) * | 2019-07-08 | 2019-09-03 | 安徽江淮汽车集团股份有限公司 | A kind of fuel cell car controller |
| CN110196565B (en) * | 2019-07-08 | 2021-03-16 | 安徽江淮汽车集团股份有限公司 | Fuel cell automobile controller |
| CN116404206A (en) * | 2023-06-05 | 2023-07-07 | 西北工业大学 | Control device and control method for cathode open hydrogen fuel cell system |
| CN116404206B (en) * | 2023-06-05 | 2023-08-29 | 西北工业大学 | Control device and control method for cathode open hydrogen fuel cell system |
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