CN100579814C - Vehicle-mounted intelligent power management system for CAN bus technology automobile - Google Patents
Vehicle-mounted intelligent power management system for CAN bus technology automobile Download PDFInfo
- Publication number
- CN100579814C CN100579814C CN200810106390A CN200810106390A CN100579814C CN 100579814 C CN100579814 C CN 100579814C CN 200810106390 A CN200810106390 A CN 200810106390A CN 200810106390 A CN200810106390 A CN 200810106390A CN 100579814 C CN100579814 C CN 100579814C
- Authority
- CN
- China
- Prior art keywords
- circuit
- lin
- current
- power
- normal open
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Small-Scale Networks (AREA)
Abstract
The invention relates to a vehicle-bone intelligent power management system used for CAN bus technology vehicles, belonging to the technical field of electronic vehicle control. The system includes a current and voltage monitoring device, a temperature monitoring device, an n route intelligent relay, an m route restorable fuse, a digital electric converting device and a CAN/LIN gateway; wherein, the input end of the current and voltage monitoring device is directly connected to the anode of a storage cell; the output end of the power electric signal of the current and voltage monitoring device is respectively connected to the input ends of the m route restorable fuse, the n route intelligent relay and the digital electric converting device; the temperature monitoring device is arranged at the proper position of the storage cell; the output end of the communication signals of the current and voltage monitoring device, the temperature monitoring device and the intelligent relay are connected with the CAN/LIN gateway by an LIN bus; the CAN/LIN gateway and the digital electric converting device are directly connected with the CAN bus of the body of the vehicle. The system realizes the on-off control of the power electricity of the vehicle by adopting a digital signal, monitors the sate of the storage cell of the vehicle, prevents the storage cell from over-discharging and reduces the static power consumption of the storage cell.
Description
Technical field
The invention belongs to the auto electronic control technology field, particularly a kind of vehicle power management system is applicable to the automobile of using the CAN bussing technique.
Background technology
Along with the development of vehicle electronics electrical technology, the electrical equipment on the automobile is more and more, and this has also increased the requirement of electric power greatly when bringing travelling comfort, and the corresponding vehicle power management of giving is also had higher requirement.
In the prior art, the break-make that automobile power source comes the power controlling electricity by the key gear adopts the multichannel electromagnetic type relay to realize the on-off action of power electricity consumption, adopts the fusing wire fuse to realize overcurrent protection.When the key gear when OFF is screwed to ACC, total lock relay closes, and power to body electric system.When vehicle mounted electrical equipment is used, the relay closes of its switch control corresponding circuits, thus current consumer obtains power supply.When current consumer generation overcurrent or short trouble, the safety fuse cutout heating disconnects, and behind trouble removal, also needs to change wire fuse and just can make this road power power supply.Under this traditional power supply power supply mode, there is not trouble diagnosing in power-supply system for the relay of power controlling line break-make, and the user can't learn the diagnostic message of relay; Power-supply system does not have monitoring function to the mode of operation of electric power storage and power supply line, the over discharge of storage battery is not prevented measure, thereby the generation of storage battery over discharge situation causes very big inconvenience to the user.
In addition, to the not classification of numeral electricity, along with the continuous increase of vehicle mounted electrical apparatus and electronic controller, the static power consumption of storage battery is also more and more in traditional power management, and the vehicle length time also causes the over discharge of battery when leaving standstill easily.
Occur having the CAN network in the market, perhaps the automobile of CAN/LIN secondary hybrid network.This automobile provides necessary condition for the realization of the intelligent management of power supply.
Summary of the invention
The objective of the invention is to for overcoming the weak point of prior art, a kind of vehicle-mounted intelligent power management system that is used for the CAN bus technology automobile is proposed, this system directly gets involved vehicle body CAN network, adopt digital signal to realize the break-make control of power of vehicle electricity, and to the condition monitoring of automotive battery, prevent the storage battery over discharge, reduce the static power consumption of storage battery; This system has the original system influence little, easy for installation, the characteristics that practicality is high.
The vehicle-mounted intelligent power management system that is used for the CAN bus technology automobile that the present invention proposes, it is characterized in that, this system comprises: insurance, digital electrical switching device and CAN/LIN gateway can be recovered in current/voltage monitoring device, device for detecting temperature, n road intelligent relay, m road, and wherein the n maxim is 14; M is any natural number;
The input end of this system is connected with B+; The power electrical signal of this system and being connected of vehicle mounted electrical apparatus, output normal open power electricity, controlled power electricity, normal open numeral electricity, controlled numeral electricity are to vehicle mounted electrical apparatus; The communication signal mouth of this system and the total wire joint of vehicle body CAN;
The annexation of each device of this internal system is: the input end of this current/voltage monitoring device is directly received B+, the power electrical signal of this current/voltage monitoring device receives respectively that described m road can recover to insure, the input end of n road intelligent relay and digital electrical switching device; Device for detecting temperature places the battery location appropriate location; The communication signal mouth of current/voltage monitoring device, device for detecting temperature, intelligent relay is connected with the CAN/LIN gateway by the LIN bus; Direct and the total wire joint of vehicle body CAN of CAN/LIN gateway and digital electrical switching device.
Characteristics of the present invention and beneficial effect:
State to automobile battery is monitored; comprise battery tension, electric current and operating ambient temperature information; simultaneously the dump energy of storage battery is estimated, realized the warning and the corresponding protection measure of the low electric weight of battery are prevented the storage battery over discharge.
Cancelled the use of fusing wire fuse on the controlled power supply line, adopt intelligent relay that the power supply line is realized current monitoring, accurately judge short circuit current and overcurrent degree, and carry out optimal control: when the small intensity over current fault takes place, intelligent relay can send the overcurrent alerting signal, and time-delay disconnects the power power supply.When strong overcurrent or short trouble take place when, intelligent relay rupturing capacity power supply rapidly.Behind trouble removal, intelligent relay can recover normal operation, realizes the recovery certainly after the fault, has avoided changing behind traditional over current fault the trouble of fusing wire fuse.In addition, intelligent relay can be realized fault self-diagnosis to electromagnetic relay self, and the discovery fault is in time reported to the police, and has also improved the reliability and the safety of relay.
Digital power supply and simulation power supply separate, and have reduced the interference of the big electric current of simulation electricity consumption to the digital circuit generation.System can be divided into normal open power supply and controlled power supply two classes according to the key gear, cuts off unnecessary numeral power supply during parking, reduces static power consumption.
Vehicle-mounted intelligent power management system of the present invention provides hardware plan for the over discharge problem that solves automotive battery; System reset after the break-make of power power supply bus is optimized control and realizes fault is carried out trouble diagnosing to relay self; The numeral electricity separates power supply with the power electricity, improves reliability, and is divided into normal open numeral electricity and controlled numeral electricity according to load nature of electricity consumed, reduces static power consumption; Total system gets involved car load CAN network by the CAN structure, and is little, easy for installation to the original system influence, the practicality height.
Vehicle-mounted intelligent power management system of the present invention also can be used other procotol and realize communication between each component part.
Description of drawings
Fig. 1 is a vehicle-mounted intelligent power management system overall structure scheme drawing of the present invention;
Fig. 2 is a vehicle-mounted intelligent power management system network topological diagram of the present invention;
Fig. 3 is a current/voltage monitoring device constructional drawing of the present invention;
Fig. 4 is a device for detecting temperature constructional drawing of the present invention;
Fig. 5 is an intelligent relay constructional drawing of the present invention;
Fig. 6 is a digital electrical switching device constructional drawing of the present invention;
Fig. 7 is a CAN/LIN gateway constructional drawing of the present invention;
Fig. 8 calculates for storage battery SOC of the present invention and hangs down the electric alarm flow process.
The specific embodiment
The vehicle-mounted intelligent power management system that the present invention proposes reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows:
The vehicle-mounted intelligent power management system that is used for the CAN bus technology automobile of the present invention, its system global structure as shown in Figure 1.This system is made up of device in the frame of broken lines among the figure, comprising: insurance, digital electrical switching device and CAN/LIN gateway can be recovered in current/voltage monitoring device, device for detecting temperature, n road intelligent relay, m road.(according to the LIN agreement, the n maxim is 14; M can be any natural number.)
Vehicle-mounted intelligent power management system comprised with exterior the connection: the input end of this system is connected with B+, from the anodal power taking of storage battery; The power electrical signal of this system and being connected of vehicle mounted electrical apparatus, output normal open power electricity, controlled power electricity, normal open numeral electricity, controlled numeral electricity are to vehicle mounted electrical apparatus; The communication signal mouth of this system and the total wire joint of vehicle body CAN.
The annexation of inner each device of vehicle-mounted intelligent power management system is, the input end of this current/voltage monitoring device is directly received B+, the power electrical signal of this current/voltage monitoring device receives respectively that described m road can recover to insure, the input end of n road intelligent relay and digital electrical switching device; Device for detecting temperature places the battery location appropriate location; The communication signal mouth of current/voltage monitoring device, device for detecting temperature, intelligent relay is connected with the CAN/LIN gateway by the LIN bus; Direct and the total wire joint of vehicle body CAN of CAN/LIN gateway and digital electrical switching device.
Vehicle-mounted intelligent power management system of the present invention is based on the distributed design of CAN and LIN bussing technique, and its network topology as shown in Figure 2.Current/voltage monitoring device, device for detecting temperature and intelligent relay are got involved network with the LIN node; The numeral electrical switching device is got involved network with the CAN node; The CAN/LIN gateway is the CAN node, is again the LIN node, realizes the communication between CAN bus and the LIN bus.Node in Fig. 2 frame of broken lines is formed a LIN subnet, by CAN/LIN gateway and the total wire joint of CAN, the total wire joint of digital electrical switching device and CAN; Total system realizes the communication with vehicle body CAN network by direct and the total wire joint of vehicle body CAN.
Each functions of components of native system is described as follows:
The current/voltage monitoring device sends to the voltage signal of detected charging and discharging of accumulator current signal and storage battery on the LIN line, realizes the monitoring to battery current and voltage status.
The power electricity is by recovering insurance, and output normal open power electricity is given and need be used the vehicle mounted electrical apparatus of normal open electricity that the power electricity is provided, and can recover insurance and realize overcurrent and short circuit electric circuit protection.
The power electricity is by intelligent relay, and output controlled power electricity provides power for corresponding vehicle mounted electrical apparatus.Intelligent relay comes the break-make of power controlling power supply according to the digital signal of LIN bus.Intelligent relay can be realized the current monitoring to power circuit simultaneously, realizes the overcurrent and the short trouble judgement of the power supply of respective lines power, realizes the selfdiagnosis of relay simultaneously, and these signals are sent by the LIN bus.
The power electricity is converted to normal open numeral electricity and the output of controlled numeral electricity by digital electrical switching device.The numeral electricity is used for providing the numeral of voltage stabilization electric to the ECU controller of vehicle mounted electrical apparatus and correlated digital circuit, and its output is subjected to the CAN bus signal control.
Device for detecting temperature sends to detected temperature signal on the LIN bus, realizes the monitoring to the battery-operated ambient temperature.
The CAN/LIN gateway connects LIN bus and CAN bus, realizes the communication between CAN bus and the LIN bus.In addition, the CAN/LIN gateway is according to electric current, voltage, temperature signal, and realization estimates to hang down with battery the warning of electric weight to the remaining capacity SOC of storage battery.
Described normal open power electricity is exactly regardless of the key gear, remains the power power supply; Described controlled electricity, exactly when the key gear is OFF, the power power supply is cut off, and when key is other gear, keeps the power power supply.Similarly, described normal open numeral electricity is exactly regardless of the key gear, remains the power supply of numeral electricity; Described controlled numeral electricity, exactly when the key gear is OFF, the power supply of numeral electricity is cut off, and when key is other gear, keeps the power supply of numeral electricity.
The characteristics of vehicle-mounted intelligent power management system integral layout of the present invention are:
1. this system has distributed control structure, adopts CAN/LIN In-vehicle networking technology;
2. this system has the power supply output of multichannel band defencive function, comprises the numeral power supply of power power supply and voltage stabilization.The power electricity of output and numeral electricity are divided into normal open electricity and controlled electricity again, i.e. output comprises electric four kinds of normal open power electricity, controlled power electricity, normal open numeral electricity, controlled numeral;
3. this system realizes protection to the power supply of controlled power electricity, and a kind of intelligent relay has been adopted in the power power supply with defencive function;
4. this system realizes the monitoring to battery current, voltage and operating ambient temperature, has adopted a kind of current/voltage monitoring device and a kind of device for detecting temperature based on the LIN bus design based on the LIN bus design;
5. this system realizes the conversion of numeral electricity, and the numeral power supply of voltage stabilization is provided, and has adopted a kind of digital electrical switching device based on the CAN bus design;
6. a kind of CAN/LIN gateway of this system applies is realized the communication of CAN/LIN network, and realizes the monitoring to the remaining capacity SOC of storage battery.
The embodiment of each parts of system of the present invention is respectively described below:
Current/voltage monitoring device of the present invention is based on the intelligent equipment of LIN bus design.This node is realized the monitoring to battery current voltage, and current and voltage signals is sent by the LIN bus.Specific embodiment structure such as Fig. 3 of this current/voltage device are made up of measure portion I and controller II.
Measure portion I is by bonded assembly input terminal A, current sensor, output wiring terminal B constitute successively.The input terminal A that the positive pole of storage battery connects measure portion from output wiring terminal B horsepower output electricity, installs current sensor between input terminal A and the output wiring terminal B.Current sensor output transducing signal S
CHandle for input controller II.Draw voltage signal S from output wiring terminal B
VHandle for input controller II.The current sensor of present embodiment is selected the Hall current sensor that can measure bidirectional current for use, also can select the current sensor of other form.
Controller II is by current sensing signal treatment circuit, voltage signal processing circuit, microprocessing unit, LIN bus communication module, and the internal interface that links to each other with measure portion I is formed with the LIN interface that links to each other with the LIN bus.Wherein, the input end of current sensing signal treatment circuit and voltage signal processing circuit links to each other with internal interface, receives the signal S from measure portion I
CAnd S
VThe mouth of current sensing signal treatment circuit and voltage signal processing circuit is connected with microprocessing unit respectively; Microprocessing unit also is connected with communication module with the LIN bus, and the LIN bus communication module is by LIN interface and the total wire joint of LIN.
The current sensing signal treatment circuit is to signal S
CAmplify, filtering, follow, pressure limiting handles the signal U after the processing
CExport microprocessing unit to.The current sensing signal treatment circuit of present embodiment selects for use chip LM224D to realize its function.
Voltage signal processing circuit is to signal S
VCarry out dividing potential drop, filtering, follow, pressure limiting handles the signal U after the processing
CExport microprocessing unit to.The voltage signal processing circuit of present embodiment adopts chip LM258D to realize its function.
Microprocessing unit is to signal U
C, U
VCarry out the AD sampling, sampled result is transformed according to host-host protocol, and send to the LIN bus communication module.The microprocessing unit of present embodiment selects for use chip MC68HC908QL4 to realize its function.
The LIN bus communication module is used to realize the communication between microprocessing unit and the LIN bus, and the LIN bus communication module of present embodiment adopts chip MC33399.
Current/voltage monitoring device of the present invention, its characteristics are:
1. this device comprises measure portion and a controller;
2. this device has the LIN network interface, can realize communication with the LIN bus;
3. the controller of current/voltage device composition comprises: current sensing signal treatment circuit, voltage signal processing circuit, microprocessing unit and LIN bus communication module.
Device for detecting temperature of the present invention is based on the intelligent equipment of LIN bus design.This node is realized the monitoring to the battery-operated ambient temperature, and temperature signal is sent by the LIN bus.The example structure of this device for detecting temperature such as Fig. 4 are made up of the temperature measuring circuit, temperature sensor signal treatment circuit, microprocessing unit, LIN bus communication module and the LIN interface that link to each other successively.
Wherein, the effect of this temperature measuring circuit is to convert temperature signal to voltage signal S
T, export the current sensing signal treatment circuit to.The temperature measuring circuit of present embodiment selects for use chip LM35D to realize its function.
The effect of temperature sensor signal treatment circuit is to temperature sensor signal S
TCarry out filtering, follow, pressure limiting handles output signal U
TTo microprocessing unit.The temperature sensor signal treatment circuit of present embodiment selects for use chip LM258D to realize its function.
Microprocessing unit is to signal U
TCarry out the AD sampling, sampled result is transformed according to host-host protocol, and send to the LIN bus communication module.The microprocessing unit of present embodiment selects for use chip MC68HC908QL4 to realize its function.
The LIN bus communication module is used to realize the communication between microprocessing unit and the LIN bus, and this module is selected chip MC33399 for use in the present embodiment.
Device for detecting temperature of the present invention, its characteristics are:
1. this device has the LIN network interface, can realize communication with the LIN bus;
2. this device comprises temperature sensing circuit, temperature sensor signal treatment circuit, microprocessing unit and LIN bus communication module.
Intelligent relay of the present invention is based on the intelligent equipment of LIN bus design.The effect of intelligent relay is:
1. realize the break-make control of digital signal to the power electricity;
2. monitor the electric current of this power bus, realize coordinating protection, optimize the break-make strategy of power power supply;
3. relay is realized trouble diagnosing;
4. control signal and diagnostic code signal are by the LIN bus communication.
The example structure of this intelligent relay such as Fig. 5 are made up of controller external circuit I and controller II.
Wherein, controller external circuit I is by bonded assembly input terminal A, current sensor, electromagnetic relay C, output wiring terminal B are formed successively.Wherein, input terminal A is the input of power electricity, and output wiring terminal B is controlled electricity output, and the contact of electromagnetic relay C meets input terminal A and output wiring terminal B respectively, between input terminal A and electromagnetic relay C current sensor is installed.Current sensor output transducing signal S
CHandle for controller II.The P of the controlled device II output of electromagnetic relay
RThe signal control break-make.Slave controller external circuit I input terminal A and output wiring terminal B draw voltage signal U respectively
IN, U
OUT, send into controller II and handle.The current sensor of present embodiment is selected Hall current sensor for use, also can select the current sensor of other form; What the electromagnetic relay of present embodiment was selected for use is SG-5 model and JQ204 model AUTOMOTIVE RELAY.
Controller II by the current sensing signal treatment circuit, coordinate protective circuit, relay drive circuit, contact diagnostic circuit, microprocessing unit, LIN bus communication module, and internal interface that links to each other with controller external circuit I and the LIN interface composition that links to each other with the LIN bus.Wherein, current sensing signal treatment circuit, coordination protective circuit, relay drive circuit connect successively; Microprocessing unit is connected with current sensing signal treatment circuit, coordination protective circuit, contact diagnostic circuit, LIN bus communication module respectively.
Wherein, the current sensing signal treatment circuit is to signal S
CAmplify, filtering, follow, pressure limiting handles the signal U after the processing
CExport microprocessing unit to and coordinate protective circuit.This circuit adopts chip LM224D to realize its function in the present embodiment.
Coordinate protective circuit co-operative control signal P
CTRLAnd U
CSignal is made control command D to the break-make of relay
CTRLAt U
CWhen being no more than limit value, i.e. when strong overcurrent does not take place in power power supply, D
CTRLAccording to P
CRTLSignal is made relay on-off control; Work as U
CWhen surpassing limit value, i.e. when strong overcurrent takes place in power power supply, output D
CTRLControl relay is disconnected, no longer respond P
CTRLThe closing relay order, and export strong overcurrent alerting signal P
STATUSTo microprocessing unit, in this case, when receiving P
CTRLWhen disconnecting the relay order, coordinate protective circuit and reset.The coordination protective circuit of present embodiment adopts chip LM393D, 74HC00 chip to realize its function.
Relay drive circuit is according to D
CTRLSignal comes control relay output primary power supply P
ROutput.The relay drive circuit of present embodiment adopts photoisolator chip TLP521-1 and Mosfet switch chip IRF9530/IRF9Z34 to realize its function.The chip model of Mosfet is chosen suitable model according to the power of relay.
The contact diagnostic circuit is to the input terminal of intelligent relay and the voltage status U of output wiring terminal
INAnd U
OUTDetect, and with testing result P
INAnd P
OUTExport microprocessing unit to.The contact diagnostic circuit of present embodiment adopts photoelectric isolated chip TLP521-2 to realize its function
The effect of microprocessing unit comprises: to signal U
CCarry out the AD sampling, sampled result is transformed according to host-host protocol, and the result is sent by the LIN bus communication module; Output relay break-make control signal P
CTRL, detect strong overcurrent alerting signal P
STATUSReceiving relay contact diagnostic result signal P
INAnd P
OUT, and electromagnetic relay self carried out trouble diagnosing, and diagnostic result is sent by the LIN bus communication module.The microprocessing unit of present embodiment selects for use chip MC68HC908QL4 to realize its function.
The LIN bus communication module is used to realize the communication between microprocessing unit and the LIN bus, and this module adopts chip MC33399 to realize its function in the present embodiment.
Intelligent relay of the present invention, its characteristics are:
1. comprising of this device: electromagnetic relay, current sensor and controller;
2. intelligent relay has the LIN network interface, can realize communication with the LIN bus;
3. the controller of intelligent relay composition comprises: current sensing signal treatment circuit, coordination protective circuit, relay drive circuit, contact diagnostic circuit, microprocessing unit and LIN bus communication module.
Digital electrical switching device of the present invention is based on the intelligent equipment of CAN bus design.This device is realized the conversion of power electricity to the numeral electricity, the numeral electricity is separated with the power electricity, and realize the classification power supply of normal open numeral electricity and controlled numeral electricity, thereby effectively reduce static power consumption.
Example structure such as Fig. 6 of numeral electrical switching device; comprise: power supply input protection circuit, normal open/controlled feed circuit, voltage conversion circuit 1, voltage conversion circuit 2, normal open/controlled commutation circuit, microprocessing unit and CAN bus communication module, and power supply interface and CAN interface.The power supply input protection circuit is connected with normal open/controlled feed circuit; Voltage conversion circuit 1 is connected with normal open/controlled feed circuit, normal open/controlled commutation circuit respectively; Voltage conversion circuit 2 is connected with normal open/controlled feed circuit, normal open/controlled commutation circuit respectively; Microprocessing unit is connected with normal open/controlled feed circuit, normal open/controlled commutation circuit and LIN bus communication module respectively.
The effect of power supply input protection circuit is the power electricity P to input
BATRealize anti-overvoltage and anti-reverse protection, P1 is to normal open/controlled feed circuit in output.The power supply input protection circuit circuit of present embodiment adopts diode 1N5401 and chemical capacitor to realize its function.
The effect of normal open/controlled feed circuit is according to microprocessing unit control signal S
ACC, S
OFFRealize P respectively
ACCAnd P
OFFControl.P
OFFWhen key gear OFF state, power P
ACCWhen the non-OFF state of key gear, power two-way output interleaved power.This circuit adopts chip TLP521-2, Mosfet switch to realize its function in the present embodiment.
Voltage conversion circuit 1 is used for P
ACCConvert the electric D of controlled numeral to
CTRL, guarantee output numeral electricity stable and with the separating of power electricity.This circuit adopts the DCDC power module to realize its function in the present embodiment, selects the DCDC power module of suitable types for use according to required voltage and power.
Voltage conversion circuit 2 is used for P
OFFConvert digital electric D to
OFF, the same numeral electricity that guarantees output stable and with the separating of power electricity.This circuit adopts the DCDC power module to realize its function in the present embodiment, selects the DCDC power module of suitable types for use according to required voltage and power.
Normal open/controlled commutation circuit is by the S of microprocessing unit
SWITCHSignal is controlled the electric D of normal open numeral
CONSTWith D
CTRL, D
OFFBetween connection select, thereby guarantee the electric D of normal open numeral
CONSTAll the time power supply.When key gear OFF, D
CONSTWith D
OFFConnect; When the key gear is not the OFF gear, D
CONSTWith D
CTRLConnect.This circuit adopts relay to realize its function in the present embodiment, and selecting model for use is NT76-C-Z-12VDC.
The effect of microprocessing unit is output control signal S
ACC, S
OFFNormal open/controlled feed circuit are controlled output control signal S
SWITCHSignal is controlled normal open/controlled commutation circuit.The microprocessing unit of present embodiment adopts chip MC68HC908QL4 to realize its function.
The CAN bus communication module is used to realize the communication between microprocessing unit and the CAN bus, and this module adopts chip 82C250 to realize its function in the present embodiment.
Digital electrical switching device of the present invention, its characteristics are:
1. this node has the CAN network interface, can realize communication with the CAN bus;
2. the structure of this node comprises: power supply input protection circuit, normal open/controlled feed circuit, voltage conversion circuit 1, voltage conversion circuit 2, normal open/controlled commutation circuit, microprocessing unit and CAN bus communication module.
CAN/LIN gateway of the present invention has CAN network interface and LIN network interface simultaneously, realizes the information communication between CAN network and the LIN network.The example structure of this CAN/LIN gateway node as shown in Figure 7.This node gateway is made up of microprocessing unit and coupled CAN bus communication module, LIN bus communication module and LIN interface and the CAN interface of difference.
The effect of microprocessing unit realizes the conversion between CAN signal and the LIN signal, and according to electric current, voltage and temperature signal the storage battery remaining capacity SOC is calculated, and sends the low electric weight of storage battery and report to the police when SOC is lower than setting value.The microprocessing unit of present embodiment selects for use chip MC68HC908QL4 to realize its function.
The CAN bus communication module is used to realize the communication between microprocessing unit and the CAN bus, and this module adopts chip 82C250 to realize its function in the present embodiment.
The LIN bus communication module is used to realize the communication between microprocessing unit and the LIN bus, and this module adopts chip MC33399 to realize its function in the present embodiment.
The CAN/LIN gateway is realized estimation and the low electric alarm to the storage battery remaining capacity SOC, and this flow process as shown in Figure 8.May further comprise the steps: microprocessing unit receives current signal I, voltage signal U, the temperature signal T that transmits on the LIN bus; To time t integration, the ampere-hour measurement Law is estimated the SOC value to current signal I, and according to voltage signal U and temperature signal T the SOC value is revised; According to voltage signal U and temperature signal T, determine thresholding charge value SOC ' simultaneously.More current SOC value and SOC '+Δ value if SOC is higher than SOC '+Δ, is then returned beginning; If SOC is lower than SOC '+Δ, then send the low electric weight alarm of storage battery to the driver, wait for that the driver reacts.If in time τ, the driver makes a response, then return beginning; If in time τ, do not detect the driver and make any reaction, then take safety method, prevent the storage battery over discharge.Here the thresholding charge value SOC ' that is mentioned is meant the minimum charge value of storage battery that can make the starter starting; The Δ of being mentioned, the accumulator electric-quantity allowance that the electric system power consumption is reserved when being meant to time-delay τ.
Claims (5)
1, a kind of vehicle-mounted intelligent power management system that is used for the CAN bus technology automobile, it is characterized in that, this system comprises: insurance, digital electrical switching device and CAN/LIN gateway can be recovered in current/voltage monitoring device, device for detecting temperature, n road intelligent relay, m road, and wherein the n maxim is 14; M is any natural number;
The input end of this system is connected with B+; The power electrical signal of this system is connected with vehicle mounted electrical apparatus, and output normal open power electricity, controlled power electricity, normal open numeral electricity, controlled numeral electricity are to vehicle mounted electrical apparatus; The communication signal mouth of this system and the total wire joint of vehicle body CAN;
The annexation of each device of this internal system is: the input end of this current/voltage monitoring device is directly received B+, the power electrical signal of this current/voltage monitoring device receives respectively that described m road can recover to insure, the input end of n road intelligent relay and digital electrical switching device; Device for detecting temperature places the battery location place; The communication signal mouth of current/voltage monitoring device, device for detecting temperature, intelligent relay is connected with the CAN/LIN gateway by the LIN bus; Direct and the total wire joint of vehicle body CAN of CAN/LIN gateway and digital electrical switching device.
2, the system as claimed in claim 1 is characterized in that, described current/voltage monitoring device is made up of measure portion and controller; Measure portion is by bonded assembly input terminal A, current sensor, output wiring terminal B constitute successively; Controller is by current sensing signal treatment circuit, voltage signal processing circuit, microprocessing unit, LIN bus communication module, and the internal interface that links to each other with measure portion is formed with the LIN interface that links to each other with the LIN bus; Wherein, the input end of current sensing signal treatment circuit and voltage signal processing circuit links to each other with internal interface, and the mouth of current sensing signal treatment circuit and voltage signal processing circuit is connected with microprocessing unit respectively; Microprocessing unit also is connected with communication module with the LIN bus, and the LIN bus communication module is by LIN interface and the total wire joint of LIN.
3, the system as claimed in claim 1 is characterized in that, described device for detecting temperature is made up of the temperature measuring circuit, temperature sensor signal treatment circuit, microprocessing unit, LIN bus communication module and the LIN interface that link to each other successively.
4, the system as claimed in claim 1 is characterized in that, described intelligent relay is made up of controller external circuit and controller; Wherein, the controller external circuit is by bonded assembly input terminal A, current sensor, electromagnetic relay C, output wiring terminal B are formed successively; Described controller by the current sensing signal treatment circuit, coordinate protective circuit, relay drive circuit, contact diagnostic circuit, microprocessing unit, LIN bus communication module, and internal interface that links to each other with controller external circuit I and the LIN interface composition that links to each other with the LIN bus; Wherein, current sensing signal treatment circuit, coordination protective circuit, relay drive circuit connect successively; Microprocessing unit is connected with current sensing signal treatment circuit, coordination protective circuit, contact diagnostic circuit, LIN bus communication module respectively.
5, the system as claimed in claim 1, it is characterized in that, described digital electrical switching device comprises: power supply input protection circuit, normal open/controlled feed circuit, voltage conversion circuit 1, voltage conversion circuit 2, normal open/controlled commutation circuit, microprocessing unit and CAN bus communication module, and power supply interface and CAN interface; The power supply input protection circuit is connected with normal open/controlled feed circuit; Voltage conversion circuit 1 is connected with normal open/controlled feed circuit, normal open/controlled commutation circuit respectively; Voltage conversion circuit 2 is connected with normal open/controlled feed circuit, normal open/controlled commutation circuit respectively; Microprocessing unit is connected with normal open/controlled feed circuit, normal open/controlled commutation circuit and LIN bus communication module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810106390A CN100579814C (en) | 2008-05-13 | 2008-05-13 | Vehicle-mounted intelligent power management system for CAN bus technology automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810106390A CN100579814C (en) | 2008-05-13 | 2008-05-13 | Vehicle-mounted intelligent power management system for CAN bus technology automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101301858A CN101301858A (en) | 2008-11-12 |
| CN100579814C true CN100579814C (en) | 2010-01-13 |
Family
ID=40112015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810106390A Expired - Fee Related CN100579814C (en) | 2008-05-13 | 2008-05-13 | Vehicle-mounted intelligent power management system for CAN bus technology automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100579814C (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255342B (en) * | 2010-05-18 | 2013-07-10 | 中国兵器工业第二〇五研究所 | Power manager used by armoured vehicle |
| CN102104276B (en) * | 2011-01-26 | 2013-01-02 | 清华大学 | Adaptive dual-controller power supply used for vehicle |
| KR20130005783A (en) * | 2011-07-07 | 2013-01-16 | 현대모비스 주식회사 | Apparatus managing power of auxiliary electronic equipment using battery sensor |
| CN103163487B (en) * | 2011-12-14 | 2015-05-20 | 北汽福田汽车股份有限公司 | Power supply distribution testing system and power supply distribution testing method used for detecting finished automobile electric system |
| US9452720B2 (en) * | 2012-01-27 | 2016-09-27 | Continental Automotive Systems, Inc. | Telematics master of power |
| JP5741480B2 (en) * | 2012-02-17 | 2015-07-01 | 株式会社オートネットワーク技術研究所 | Communication system, relay device, and power supply control method |
| JP5741496B2 (en) | 2012-03-14 | 2015-07-01 | 株式会社オートネットワーク技術研究所 | In-vehicle communication system |
| CN102874190B (en) * | 2012-10-17 | 2015-12-09 | 厦门汉纳森汽车电子有限公司 | Power supply on vehicle intellectualized management system and method |
| CN103895587A (en) * | 2012-12-28 | 2014-07-02 | 上海申龙客车有限公司 | Intelligent automobile power supply management module |
| CN104062911B (en) * | 2013-03-22 | 2017-06-09 | 瑞昱半导体股份有限公司 | Auto electronic system and its method of supplying power to |
| US9082242B2 (en) * | 2013-10-11 | 2015-07-14 | GM Global Technology Operations LLC | Vehicle network health assessment |
| CN104852726B (en) * | 2015-05-20 | 2017-09-19 | 西安西热控制技术有限公司 | A kind of Intelligent self-diagnosis digital input end daughter board and method |
| CN104852716B (en) * | 2015-05-20 | 2017-09-19 | 西安西热控制技术有限公司 | A kind of thermal power plant's digital input end daughter board and method |
| CN106680537B (en) * | 2015-11-05 | 2019-06-28 | 大陆汽车电子(长春)有限公司 | Diagnosis and self-protection circuit for Hall current sensor |
| CN105446191A (en) * | 2015-12-18 | 2016-03-30 | 长城信息产业股份有限公司 | Automobile electric power distribution system and automobile electric power distribution method |
| CN105867229B (en) * | 2016-04-14 | 2018-09-14 | 北京中电万联科技股份有限公司 | Mobile unit power supply embedded management system |
| EP3309806B1 (en) * | 2016-10-14 | 2020-08-05 | TE Connectivity Germany GmbH | Intelligent switch for automotive application |
| CN106696863B (en) * | 2016-12-28 | 2019-03-08 | 安徽江淮汽车集团股份有限公司 | The control method and system of vehicle intelligent interactive device |
| CN108466554B (en) * | 2018-04-21 | 2023-10-24 | 合众新能源汽车股份有限公司 | BMS multifunctional integrated power management circuit |
| CN109256765B (en) * | 2018-11-21 | 2024-06-18 | 广州领世汽车科技有限公司 | Direct current power supply distribution box |
| CN110843707B (en) * | 2019-11-26 | 2023-03-31 | 奇瑞汽车股份有限公司 | Automobile power distribution system |
| WO2022171865A1 (en) * | 2021-02-12 | 2022-08-18 | Eaton Intelligent Power Limited | System, method, and apparatus for bi-directional dc short-circuit protection |
| CN113542085B (en) * | 2021-06-28 | 2022-08-02 | 浙江富特科技股份有限公司 | Method for rapid fault protection diagnosis of vehicle-mounted power supply |
| CN113489158A (en) * | 2021-08-05 | 2021-10-08 | 安徽中科中涣防务装备技术有限公司 | Low-voltage intelligent power distribution module |
| CN114771437B (en) * | 2022-04-28 | 2024-04-26 | 重庆长安汽车股份有限公司 | Automobile power management system and control and remote control controller method thereof |
| CN115079621A (en) * | 2022-08-16 | 2022-09-20 | 中科芯集成电路有限公司 | LIN-CAN bus control device applied to automobile sensor |
| CN116749898A (en) * | 2023-07-19 | 2023-09-15 | 大连擎研科技有限公司 | Fuel cell system low-voltage safe box with diagnosis function |
-
2008
- 2008-05-13 CN CN200810106390A patent/CN100579814C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101301858A (en) | 2008-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100579814C (en) | Vehicle-mounted intelligent power management system for CAN bus technology automobile | |
| CN103986209B (en) | A kind of car battery charging system and method | |
| CN101272048B (en) | Vehicle mounted intelligent relay | |
| CN102910082B (en) | Main and auxiliary power supply switching system for electric vehicle | |
| CN206306847U (en) | Pure motor wagon high-tension distribution box | |
| CN110103855B (en) | Power distribution system and method for hybrid vehicle | |
| CN105122568A (en) | Method for the controlled connection of a plurality of on-board power system branches of a vehicle, control unit for carrying out the method and on-board power system | |
| CN109941106A (en) | The power-supply system of electric vehicle | |
| CN101927764A (en) | Double-HCU integrated control system of hybrid power vehicle | |
| CN113691010B (en) | Redundant power supply system and control method | |
| CN212373185U (en) | Battery management system and vehicle | |
| CN210133011U (en) | Intelligent high-voltage distribution box and vehicle | |
| CN203318314U (en) | Vehicle dark current intelligent control protection system | |
| CN215452535U (en) | Battery system | |
| CN215097406U (en) | Vehicle high-voltage device and automobile | |
| CN214689114U (en) | Electric vehicle controller integrating lead-acid battery electric quantity estimation function and electric vehicle | |
| CN111186301B (en) | Integrated control device for fuel cell vehicle and overcurrent protection control method | |
| CN212400921U (en) | Non-net self-walking energy storage and unidirectional DC/DC converter system for rail transit | |
| CN211000942U (en) | Low-voltage power supply management system for safety monitoring of power battery of electric automobile | |
| CN106773984A (en) | A kind of integrated form power electronic equipment of electric automobile | |
| CN114552726A (en) | New energy multi-source input low-voltage power distribution system supporting wireless communication | |
| CN103119457A (en) | Method for determining a charge state of a battery | |
| CN111823950A (en) | Battery management system and vehicle | |
| CN102745128B (en) | Control method and system of vehicle emergency signal light | |
| CN206450999U (en) | A kind of integrated form power electronic equipment of electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20170513 |