CN104635690A - Whole vehicle control unit (VCU) integrated with gateway function of pure electric vehicle - Google Patents
Whole vehicle control unit (VCU) integrated with gateway function of pure electric vehicle Download PDFInfo
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The embodiment of the invention provides a whole vehicle control unit integrated (VCU) with a gateway function of a pure electric vehicle. The whole vehicle control unit mainly comprises a single chip microcomputer, a power supply chip and a receiver-transmitter of a plurality of bus types, wherein the receiver-transmitter is connected with the single chip microcomputer by receiving-transmitting buses and is switched into a bus with the corresponding type of the receiver-transmitter; the single chip microcomputer is connected with the receiver-transmitter of the plurality of bus types through the plurality of receiving-transmitting buses and is connected with the power supply chip by an SPI bus; the power supply chip is connected with the single chip microcomputer by the SPI bus and provides power supply voltage to the whole vehicle control unit; a plurality of types of awakening signals input from the external part are received by an awakening signal input interface. The VCU is provided with a lot of peripheral bus chips and more bus types can be compatible, so that the whole vehicle control unit has a larger network communication capability and the gateway function is realized. Each awakening input of the power supply chip in the VCU contains a detection signal, so that the VCU can start the corresponding working mode under various necessary working states.
Description
Technical field
The present invention relates to pure electric automobile technical field, particularly relate to a kind of VCU (Vehicle Control Unit, entire car controller) of pure electric automobile of integrated gateway function.
Background technology
Under the dual-pressure that petroleum resources are exhausted and environmental pollution is serious, energy-conservation, the oligosaprobic advantage of the height of pure electric automobile, become the Main way of contemporary automotive development, pure electric automobile gordian technique have been developed and research has very important significance.
The car load network of pure electric automobile has the advantages that kind is many, node is many, content is assorted, uses a gateway both can carry out combing to car load network, can improve again the signal quality of car load network to a certain extent.And VCU is as pure electric automobile core control part, need and different bus network on various controllers carry out information interaction.Gateway is carried out integrated with VCU, becomes two parts from parts, namely save space, again reduce cost.
In pure electric automobile, VCU replaces the control unit of engine in orthodox car, is the carrier carrying out pure electric vehicle power control and electric energy management.On the one hand, VCU obtains operator demand's information by its data acquisition module, the parts such as VCU and electric machine controller, battery management system, electronic backup system form bus network on the other hand, can the current whole vehicle state of Real-time Obtaining, motor, battery, the electronic parts such as auxiliary parameter, optimized algorithm is adopted to coordinate Electri auxiliary parts and motor operation, meeting driver under the prerequisite of the dynamic property of car load and comfortableness demand, the consumption of saves energy to greatest extent.
There is part pure electric automobile in the market, according to the requirement of each network node to real-time, devise CAN (ControllerAreaNetwork, the controller local area network) communication network that high, low speed two speed are different.By node strict for requirement of real-time composition high-speed CAN communication network, by node relatively low for other requirement of real-times composition low speed CAN communication network, and arrange entire car controller to be coupled together by CAN communication networks different for these two speed, realize the data sharing between whole node.
Along with the development of pure electric automobile, car load network node is on the increase, and security performance requires to improve constantly, and the type of bus is not limited to CAN, even CAN is also not only divide by speed, the division of safety and specialized network also can be related to.At this moment, just need a kind of VCU of integrated gateway function, this VCU needs to possess larger Internet communication capacity, can compatible more bus type, has more bus run.And in order to mate larger communication data amount, needing abundant data and storing or cache module.Existing pure electric automobile VCU, its duty is only limited to 2-3 the states such as firing key unlatching, Vehicular charging, if and to occur as car load gateway, VCU just should not be limited only within these duties, other states also need to start work as the VCU of gateway, such as activation of alarm state, Remote Wake Up duty, multiple states such as stationary vehicle alert status.
Summary of the invention
The embodiment provides a kind of VCU of pure electric automobile of integrated gateway function, to realize a kind of VCU with gateway function.
An entire car controller for the pure electric automobile of integrated gateway function, comprising: the transceiver of single-chip microcomputer, power supply chip, multiple bus type;
Described transceiver, for being connected with described single-chip microcomputer by transceiver bus, accesses the bus of described transceiver corresponding types;
Described single-chip microcomputer, for being connected respectively by the transceiver of many transceiver bus with various bus type, is connected with described power supply chip by serial peripheral equipment interface SPI bus;
Described power supply chip, for being connected with described single-chip microcomputer by serial peripheral equipment interface SPI bus, for described entire car controller provides supply voltage, polytype wake-up signal of outside input is received by wake-up signal input interface, described polytype wake-up signal comprises wake-up signal corresponding to often kind of bus, when described wake-up signal is effective, described entire car controller is in wake-up states;
Preferably, described transceiver bus comprises: CAN, LIN bus and FlexRay bus, described transceiver comprises: CAN transceiver, LIN bus transceiver and FlexRay bus transceiver, described CAN transceiver has CAN arousal function, described LIN transceiver has LIN bus arousal function, and described FlexRay transceiver has FlexRay bus arousal function.
Preferably, described entire car controller also comprises:
Input signal processing circuit, for being connected with described single-chip microcomputer by serial peripheral equipment interface SPI bus, the sampled signal of polytype wake-up signal of outside input is received by wake-up signal Sampling Interface, calculate the magnitude of voltage of described sampled signal, by spi bus, the magnitude of voltage of described sampled signal is transferred to described single-chip microcomputer, judges the duty of described entire car controller to make described single-chip microcomputer according to the magnitude of voltage of described sampled signal and described sampled signal.
Preferably, described input signal processing circuit, also for being connected with described power supply chip by spi bus, when power supply level higher than described single-chip microcomputer of the magnitude of voltage of described sampled signal, by clamp diode, the portion voltage of the permission input level value higher than described single-chip microcomputer in described sampled signal is exported to the output port of described power supply chip; When GND level lower than described single-chip microcomputer of the magnitude of voltage of described sampled signal, by clamp diode, the portion voltage of minimum for the permission lower than described single-chip microcomputer in described sampled signal input level value is exported to GND.
Preferably, described entire car controller also comprises:
Output signal processing circuit, for being connected with described single-chip microcomputer by serial peripheral equipment interface SPI bus, outside output relay class control signal, resistor-type output signal and LED drive singal.
Preferably, described power supply chip, for comprising three tunnels independently power supply output VDD, VDD1 and VDD2, each road power supply exports all with decoupling capacitor, described VDD provides power supply for single-chip microcomputer, and described VDD1 and VDD2 provides power supply for external sensor and internal insulation circuit.
Preferably, described single-chip microcomputer, also for being provided with the power control signal of described power supply chip, when described single-chip microcomputer work, described power control signal is drawn high, when the outside wake-up signal of described power supply chip all lost efficacy, described power control signal was transferred to described power supply chip by spi bus by described single-chip microcomputer, utilized described power control signal to be waken up by described power supply chip.
Preferably, described single-chip microcomputer, also for being received the program writing to be brushed that CAN transceiver sends over by CAN, or, utilize the program writing to be brushed that on the sheet of single-chip microcomputer, diagnose interface is sended over by cordless communication network reception server, described program writing to be brushed is stored in the storage unit of single-chip microcomputer.
Preferably, described power supply chip, for arranging watchdog circuit input interface, described watchdog circuit input interface connects the watchdog circuit output interface of described single-chip microcomputer, when described single-chip microcomputer normally works, described power supply chip receives the watchdog pulse of described single-chip microcomputer output by described watchdog circuit input interface, when described power supply chip interval setting-up time does not receive the watchdog pulse of described single-chip microcomputer output, then judges described single-chip microcomputer operation irregularity.
Preferably, described power supply chip, for arranging reset output interface, this reset output interface connects the reset input interface of described single-chip microcomputer, after described power supply chip judges described single-chip microcomputer operation irregularity, reset signal is exported, by described reset signal by described monolithic processor resetting to described single-chip microcomputer by described reset output interface.
The technical scheme provided as can be seen from the embodiment of the invention described above, the embodiment of the present invention proposes a kind of performance safety reliably for the VCU of the integrated gateway function of pure electric automobile, this VCU is equipped with a large amount of peripheral bus chips, and can compatible more bus type, thus possess larger Internet communication capacity, achieve gateway function.The input that wakes up of the power supply chip in VCU comprises: firing key wakes up, charge wake up, Remote Wake Up, clock wakes up, CAN is waken up, LIN bus is waken up, FlexRay bus is waken up and waken up with bodywork system, and eachly wake input up and have detection signal, ensure that VCU can must start corresponding mode of operation under duty various.
The aspect that the present invention adds and advantage will part provide in the following description, and these will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The general structure Organization Chart of the entire car controller of a kind of integrated gateway function that Fig. 1 provides for the embodiment of the present invention.
The circuit theory diagrams of a kind of power supply chip TLE4471 that Fig. 2 provides for the embodiment of the present invention.
The structured flowchart of a kind of driving chip TLE8718SA that Fig. 3 provides for the embodiment of the present invention.
The circuit block diagram of a kind of CAN transponder chip TLE6251-3G that Fig. 4 provides for the embodiment of the present invention.
The circuit block diagram of a kind of FlexRay bus transceiver chip TLE9221SX that Fig. 5 provides for the embodiment of the present invention.
The circuit block diagram of a kind of LIN network transceivers chip TLE7269 that Fig. 6 provides for the embodiment of the present invention.
The power supply input signal voltage collection circuit schematic diagram of a kind of VCU that Fig. 7 provides for the embodiment of the present invention.
The 12V level input signal treatment circuit schematic diagram of a kind of VCU that Fig. 8 provides for the embodiment of the present invention.
The resistance of a kind of VCU that Fig. 9 provides for the embodiment of the present invention and voltage sensor input signal processing circuit schematic diagram.
The amperometric sensor input signal processing circuit schematic diagram of a kind of VCU that Figure 10 provides for the embodiment of the present invention.
The sheet sand covered interface circuit schematic diagram of a kind of VCU that Figure 11 provides for the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in instructions of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing for several specific embodiment, and each embodiment does not form the restriction to the embodiment of the present invention.
The VCU of a kind of integrated gateway function for pure electric automobile that the embodiment of the present invention provides, the microcontroller that this VCU selects bus resource to enrich, arithmetic capability is strong, as the acp chip of VCU, is connected with car load network through all kinds of bus transceiver.Meanwhile, in order to make VCU can start work under various operating mode, also add various car load duty marking signal, waking input up as VCU.
The central processing unit of VCU adopts the XC2298H single-chip microcomputer of Infineon, and this single-chip microcomputer has abundant bus resource, comprises 6 CAN nodes totally 256 message objects, 2 road FlexRay passages and 10 tunnel USB (universal serial bus).Wherein 6 CAN nodes all possess automatic forwarding capability and (message of a CAN node can be forwarded to another node automatically and not consume the resource of single-chip microcomputer kernel, substantially increase the work efficiency of single-chip microcomputer), and 10 tunnel USB (universal serial bus) are programmed for SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)), IIC (Inter-Integrated Circuit, IC bus), LIN ((Local Interconnect Network, Local Interconnect Network) etc. multiple bus, ensure that microcontroller is to the control ability of peripheral circuit.In addition, XC2298H single-chip microcomputer dominant frequency reaches 100MHz, there is the program's memory space of 1600KB and the static storage of 138KB, and 150 universal input and output port and 30 analog samplings input, the data acquisition of VCU, computing and processing demands can be met.
What the power supply chip of VCU adopted is TLE4471 chip, this chip can by the 12V level conversion of Vehicular accumulator cell for single-chip microcomputer XC2298H work required for 5V level.This chip has enable control inputs simultaneously, and when enable input is effective, VCU is in wake-up states, and when enable input is invalid, VCU is in dormant state.In the controller of the embodiment of the present invention, the input that wakes up of power supply chip comprises: firing key wakes up, charge wake up, Remote Wake Up, clock wakes up, CAN is waken up, LIN bus is waken up, FlexRay bus is waken up and waken up with bodywork system, and eachly wake input up and have detection signal, ensure that VCU can must start corresponding mode of operation under duty various.
In order to realize gateway function, VCU is equipped with a large amount of peripheral bus chips.CAN aspect, VCU employs 6 TLE6251-3G high-speed CAN transceivers, and this chip possesses CAN and wakes up and error diagnosis function.LIN bus aspect, VCU uses 1 TLE7269G transceiver, and this chip has 2 road LIN passages, has LIN bus and wakes up and fault diagnosis functions.FlexRay bus aspect, VCU uses 2 TLE9221SX transceivers, and this chip has FlexRay bus arousal function.
VCU is as the core control part of pure electric automobile, also need to gather a large amount of whole vehicle state signals except bus signals, comprise accelerator pedal, brake pedal, Isolating Switch, gear, the driver intentions such as electric model switch judge input signal, the detection signal of various power supply wake-up signal, high-low pressure interlocks, fast and slow charge connects confirmation signal, securing band, the safe input signal such as air bag, air-conditioning gear is selected, air-conditioning switch, temperature sensor, vacuum servo pressure transducer, air-conditioning duct pressure, electric turning booster system fault, the electric backup system condition input signals such as DC/DC fault, probe power voltage monitoring, the in-line power security monitoring signals such as electric power system voltage monitoring.
Meanwhile, VCU is also responsible for the controlling functions of some electric-controlled parts of car load, ensures the operation that pure electric automobile can be safe, reliable, efficient.These control signals comprise: the output signals such as battery system high-voltage relay controls, the fast control of charging system high-voltage relay, the control of air-conditioning system high-voltage relay, the control of high low speed cooling fan relay, the control of cooling-water pump Control, backup lamp Control, instrument rechargeable lamp, vacuum pump drived control.Because the drive current of these chips is all far away higher than the maximum drive current value of single-chip microcomputer XC2298H output port, so VCU have employed driving chip TLE8718SA, by spi bus, output is carried out to TLE8718SA driving chip by XC2298H and control and fault diagnosis.
VCU also writes with a brush dipped in Chinese ink mode for XC2298H single-chip microcomputer provides two kinds of programs.One is that CAN writes with a brush dipped in Chinese ink mode, by the 1st tunnel bus in 6 tunnel CAN, carries out data transmission according to the communications protocol that XC2298H single-chip microcomputer is specified, by the program storage unit (PSU) of program code to be write with a brush dipped in Chinese ink write XC2298H single-chip microcomputer.Second method is that on sheet, diagnose interface writes with a brush dipped in Chinese ink mode, both can carry out in-circuit emulation to XC2298H single-chip microcomputer by diagnose interface on the sheet of XC2298H single-chip microcomputer, also can by the program storage unit (PSU) of program code to be write with a brush dipped in Chinese ink write XC2298H single-chip microcomputer.
Fig. 1 is the general principles Organization Chart of the VCU of the integrated gateway function for pure electric automobile of the embodiment of the present invention, comprise Master control chip, power supply and reset administration module, output signal process and diagnostic module, CAN communication module, LIN communication module, FlexRay communication module, power supply input processing circuit, 12V level input signal treatment circuit, resistance and voltage class sensor input signal treatment circuit, current capacity sensor treatment circuit.VCU has multiple ability to communicate, comprises CAN, LIN and FlexRay bus, and often kind of bus can both provide wake-up signal; The supply voltage of single-chip microcomputer XC2298H, the supply voltage of external sensor, the power supply of buffer circuit, is all completed by a TLE4471 integrated chip; All relay class control signals of entire car controller, resistor-type outputs signal, and LED drive singal, is all completed by a TLE8718SA integrated chip.
Single-chip microcomputer XC2289H in Fig. 1 is the core processor of controller, and the chips such as TLE4471, TLE6251-3G, TLE7269, TLE9221SX, TLE8718SA are the peripheral chip of the controller of the embodiment of the present invention.Single-chip microcomputer XC2289H obtains the supply of 5V power supply by power supply chip TLE4471, carry out information interaction by the CAN of transponder chip TLE6251-3G, TLE7269, TLE9221SX and outside, LIN bus, FlexRay bus, and by driving chip TLE8718SA, external loading is controlled.
TLE4471 is the power supply supply chip of the controller of the embodiment of the present invention, and its schematic diagram as shown in Figure 2.TLE4471 is by the 5V power supply of the 12V power conversion of outside needed for single-chip microcomputer XC2298H work, and when the voltage range of external power source is 9-16V, TLE4471 can normally work.And TLE4471 chip is except power supply input, also need enable input signal, this enable input signal can be firing key wake up, charge wake up, Remote Wake Up, the wake-up signal such as clock wakes up, CAN network is waken up, LIN WOL (Wake On LAN), FlexRay WOL (Wake On LAN) and bodywork system wake up, wherein any one wake-up signal is high level, then power supply chip can normally work.Except outside wake-up signal, TLE4471 is also for a power control signal reserved by single-chip microcomputer, after single-chip microcomputer is started working, this signal is drawn high by single-chip microcomputer at once, even if when outside like this wake-up signal all lost efficacy, single-chip microcomputer XC2298H still can keep TLE4471 normally to work by this power control signal.Each wake-up signal of TLE4471 have passed through an isolating diode before entering power supply chip, such single-chip microcomputer XC2289H by sampling to each wake-up signal, thus can judge which kind of duty present controller is in exactly after power supply chip normally works.
Power supply chip TLE4471 has three-way power to export, and three road output voltages are all 5V, and wherein VDD provides power supply for single-chip microcomputer, VDD1 and VDD2 is that external sensor (accelerator pedal, gear etc.) and internal insulation circuit provide power supply.In order to make output supply voltage more steady, each road power supply exports all with decoupling capacitor, and VDD is as a zone bit of whole controller work, be also configured with a power supply indication LED lamp, during convenient debugging, judge that whether controller is in running order rapidly.
WatchDog Timer (WDT, Watch Dog Timer) is an ingredient of single-chip microcomputer, and it is actually a counter, and general to house dog one number greatly, after program brings into operation, house dog starts to count down.If program normal operation, CPU should send instruction and allow watchdog reset after a while, restarts to count down.If house dog reduces to 0 just think that program does not normally work, whole system is forced to reset.
The power supply chip TLE4471 of the controller of the embodiment of the present invention also has the function of monitoring singlechip duty.WDI pin is the watchdog circuit input of power supply chip TLE4471, is also the watchdog circuit output pin of single-chip microcomputer XC2289H simultaneously.PORST is that the monitoring of power supply chip TLE4471 exports, and is also the power reset input pin of single-chip microcomputer XC2289H simultaneously.When single-chip microcomputer XC2289H normally works, need timing to power supply chip TLE4471 output pulse signal, show that single-chip microcomputer XC2289H duty is normal.Once single-chip microcomputer XC2289H cisco unity malfunction, then cannot continue to export watchdog pulse.When power supply chip TLE4471 does not receive the Puled input of single-chip microcomputer XC2289H more than 50 milliseconds, then judge single-chip microcomputer XC2289H operation irregularity, thus PORST pin is dragged down, reset single-chip microcomputer XC2289H.
Fig. 3 is the circuit block diagram of the pio chip TLE8718SA of controller.As can be seen from the figure, pio chip TLE8718SA is by the control of single-chip microcomputer XC2289H, and control mode is SPI serial data transmission.Single-chip microcomputer XC2289H not only can carry out output by spi bus to TLE8718SA and control, fault diagnosis can also be carried out to all output channels of TLE8718SA, comprise the load open circuit of each passage, load short circuits, shorted to earth and temperature are crossed to the diagnosis of high fault.
TLE8718SA has 18 output channels, wherein the fan-out capability of two passages is 8A, and the fan-out capability of two passages is 3A, and the fan-out capability of 10 passages is 2.2A, the fan-out capability of 4 passages is 0.6A, and each passage can stand the surge voltage impact of 50-60V.6 passages such as the passage 5-10 in 18 passages can be shielded by single-chip microcomputer XC2289H and export, and when the level of the DIS5_10 pin of TLE8718SA is high, passage 5-10 allows to export, and when the level of DIS5_10 pin is low, passage 5-10 forbids exporting.
TLE8718SA also has voltage monitoring function.Because the level of VDD input pin is very important to TLE8718SA chip, whether the logical circuit determining this chip can normally work.So TLE8718SA chip can be monitored the magnitude of voltage of VDD, when the voltage of VDD is higher than 5.5V or lower than 4.5V, TLE8718SA chip can forbid the output function of all output channels, ABE pin level is dragged down simultaneously.Same, when TLE8718SA chip detection to the voltage of SVBATT pin higher than 30V time, also can forbid the output function of all output channels.
Fig. 4 is the CAN circuit frame figure of controller.Because single-chip microcomputer XC2289H has 6 road CAN passages, so be configured with 6 road CAN passages in controller altogether, correspond to the former car high-speed CAN bus of pure electric automobile respectively, former car low speed CAN, new forms of energy CAN, fill CAN soon, CAN is reserved on power battery information CAN and 1 road.New forms of energy CAN wherein, except the same external world carries out CAN information interaction, also has CAN and writes with a brush dipped in Chinese ink function, namely can carry out writing with a brush dipped in Chinese ink of program code by this road CAN to single-chip microcomputer XC2289H.
All as shown in Figure 4, chip TLE6251-3G carries out information transmission by RxD and TxD pin with single-chip microcomputer XC2289H as CAN transceiver to the CAN circuit on each road.Single-chip microcomputer XC2289H is controlled by the mode of operation of EN and NSTB pin to TLE6251-3G, and whether TLE6251-3G chip is normal to single-chip microcomputer XC2289H feedback transceiver duty by NERR pin.
CANH and CANL is the CAN network differential signal of chip TLE6251-3G, the resistant series of two 60 ohm becomes the terminal resistance of this CAN together, if controller does not need configurating terminal resistance in this CAN, these two resistance can not weld.The common mode inductance of 51uH is used to suppress the common mode interference in CAN, improves the signal stabilization of CAN.
Chip TLE6251-3G has CAN arousal function.Namely above-mentioned CAN wake-up signal is provided by chip TLE6251-3G.When controller is in dormant state, namely when the enable input of power supply chip TLE4471 is invalid, if there is bus message in CAN, when the level of CANH and the CANL that namely bus was last reaches CAN level standard, the INH pin of chip TLE6251-3G just can export high level, power supply chip TLE4471 is waken up, thus whole controller is waken up.About CAN arousal function, need to do following 2 explanations: one, the output that wakes up of 6 tunnel CAN directly connects together, and just can judge that controller wakes up by the information on the CAN of Shi Na road after single-chip microcomputer XC2289H is waken up by analyzing CAN data; Two, 6 road CAN are configured with CAN arousal function, if wherein partial bus does not need CAN arousal function, only need the diode between VBatt and the Vs pin of chip TLE6251-3G not weld.
Fig. 5 is the FlexRay bus circuit frame diagram of controller.The controller of the embodiment of the present invention has two-way FlexRay bus, and a road and on-vehicle host carry out information interaction, and another road is reserved.Chip TLE9221SX carries out information transmission by RxD and TxD pin with single-chip microcomputer XC2289H, carries out Data Transmission Controlling and working state control between single-chip microcomputer XC2289H and chip TLE9221SX by pins such as EN, BGE, RxEN, TxEN, STBN.Controller carries out information interaction by BP and BM pin with extraneous bus.And the use of inductance L CMC is in order to FlexRay bus improves anti-common mode interference ability.WAKE pin is the input pin of chip, the controller of the embodiment of the present invention without the need to this function, so by this pin ground connection.
Chip TLE9221SX has FlexRay bus arousal function.Namely above-mentioned FlexRay bus wake-up signal is provided by chip TLE9221SX.Wake up similar with CAN, in FlexRay bus, power supply chip TLE4471 can be waken up by chip TLE9221SX by message, thus is waken up by whole controller.
Fig. 6 is the LIN bus circuit frame diagram of controller.The controller of the embodiment of the present invention comprises a slice TLE7269 chip drives two-way LIN bus, and a road and car load diagnose interface carry out information interaction, and another road is reserved.Chip TLE7269 carries out information transmission by RxD and TxD pin with single-chip microcomputer XC2289H, carries out data transmission and working state control between single-chip microcomputer XC2289H and chip TLE7269 by pins such as EN, W2O.Controller carries out information interaction by BUS pin with extraneous bus.
Chip TLE7269 has LIN bus arousal function.Namely above-mentioned LIN bus wake-up signal is provided by chip TLE7269.Wake up similar with CAN, in LIN bus, power supply chip TLE4471 can be waken up by chip TLE7269 by message, thus is waken up by whole controller.
Fig. 7-10 is input signal processing circuits of controller.
In Fig. 7, power supply input comprises battery feed, firing key wakes up, charge wake up, Remote Wake Up, clock wakes up, CAN is waken up, LIN bus is waken up, FlexRay bus wakes input signals such as waking up with bodywork system up.The voltage V1 of single-chip microcomputer collection and the relation of supply voltage Vs are:
In Fig. 8,12V level input signal comprises the input signal such as brake pedal, Isolating Switch, electric model switch, high-low pressure interlocking, fast and slow charge connection confirmation signal, securing band, air bag, the selection of air-conditioning gear, air-conditioning switch, air-conditioning duct pressure, electric turning booster system fault, DC/DC fault.The voltage V2 of single-chip microcomputer collection and the relation of 12V level signal voltage Vd are:
When input signal is not unsettled,
When input signal is unsettled,
In Fig. 9, the input signal of voltage resistance type sensor comprises the sensor signals such as accelerator pedal signal, gear, temperature sensor, vacuum servo pressure transducer.The voltage V3 of single-chip microcomputer collection and the relation of voltage resistance type sensor input signal voltage Vsen are:
V3＝Vsen
In Figure 10, the input signal of amperometric sensor refers to vehicle speed sensor signal.The voltage V4 of single-chip microcomputer collection and the relation of amperometric sensor current input signal Isen are:
V4＝R1×Isen
In Fig. 7-10, all inputs and sampled signal are all the analog signal processing modules entering single-chip microcomputer, single-chip microcomputer XC2298H can coordinate according to the actual working state of current pure electric automobile the magnitude of voltage collected, judge this signal is in which kind of state, substantially increase the accuracy of signal judgement and voltage acquisition.The effect of operational amplifier is all kept apart with external circuit by single-chip microcomputer, prevents single-chip microcomputer from disturbing by external signal, and operational amplifier serves as voltage follower simultaneously, ensures that sample voltage value is accurate.Electric capacity C1 is arranged near the connector of control, after external signal enters controller, carry out filtering to signal, by the high-frequency interferencing signal filtering in signal.Electric capacity C2 is arranged in around single-chip microcomputer, by the filtering of signal high frequency signal before signal enters single-chip microcomputer, strengthens the accuracy of signal measurement.The effect of two clamp diodes is the permission input level value preventing input voltage from exceeding single-chip microcomputer, when inputting level higher than VDD1 of the voltage of single-chip microcomputer (single-chip microcomputer power supply level), the signal exceeded is exported to VDD1 network by diode, when inputting the voltage of single-chip microcomputer lower than GND level, diode by low go out signal export to GND network.GND to represent in above-mentioned electronic circuit publicly, GND level representative zero potential (no-voltage);
Figure 11 is the sheet sand covered interface of single-chip microcomputer XC2298H, and TDI, TDO, TCK are the signal wire of data transmission, and TRST, PORST, TMS are the operating mode control signals of single-chip microcomputer XC2298H.By sheet sand covered interface, user can emulate the program that single-chip microcomputer runs and follow the tracks of, and is easier to the leak finding to exist in software.Meanwhile, user can also carry out program code by sheet sand covered interface to single-chip microcomputer XC2298H and writes with a brush dipped in Chinese ink.
In sum, the embodiment of the present invention proposes a kind of performance safety reliably for the VCU of the integrated gateway function of pure electric automobile, this VCU is equipped with a large amount of peripheral bus chips, employ 6 TLE6251-3G high-speed CAN transceivers, and can compatible more bus type, there is more bus run, thus possess larger Internet communication capacity, achieve gateway function.
Existing pure electric automobile VCU, its duty is only limited to 2-3 the states such as firing key unlatching, Vehicular charging, the input that wakes up of the power supply chip in the VCU of the embodiment of the present invention comprises: firing key wakes up, charge wake up, Remote Wake Up, clock wakes up, CAN is waken up, LIN bus is waken up, FlexRay bus is waken up and waken up with bodywork system, and eachly wake input up and have detection signal, ensure that VCU can must start corresponding mode of operation under duty various.
Existing pure electric automobile VCU, mainly with the legacy device such as gear, pedal for driver operates consciousness input, the VCU of the embodiment of the present invention not only judges these signals, also allow driver to carry out information interaction by the FlexRay bus of vehicular amusement apparatus with VCU, certain command operating is carried out to VCU simultaneously.
Existing pure electric automobile VCU, and the communication between other electric automobile critical components (as motor, battery etc.) is based on CAN communication, the VCU of the embodiment of the present invention does not carry out communication by means of only CAN with motor and battery, also carried out the secondary-confirmation of key message by LIN bus with these parts, strengthen the reliability that power network connects.
Existing pure electric automobile VCU, how not possess gateway function, the VCU of the embodiment of the present invention is integrated with gateway function, combing is carried out to car load network and again plans, meet the trend that car load is integrated, reduce integral vehicle cost, be convenient to network message simultaneously and be encrypted, the internet security of car load is improved.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for device or system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. an entire car controller for the pure electric automobile of integrated gateway function, is characterized in that, comprising: the transceiver of single-chip microcomputer, power supply chip, multiple bus type;
Described transceiver, for being connected with described single-chip microcomputer by transceiver bus, accesses the bus of described transceiver corresponding types;
Described single-chip microcomputer, for being connected respectively by the transceiver of many transceiver bus with various bus type, is connected with described power supply chip by serial peripheral equipment interface SPI bus;
Described power supply chip, for being connected with described single-chip microcomputer by serial peripheral equipment interface SPI bus, for described entire car controller provides supply voltage, polytype wake-up signal of outside input is received by wake-up signal input interface, described polytype wake-up signal comprises wake-up signal corresponding to often kind of bus, when described wake-up signal is effective, described entire car controller is in wake-up states.
2. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, it is characterized in that, described transceiver bus comprises: CAN, LIN bus and FlexRay bus, described transceiver comprises: CAN transceiver, LIN bus transceiver and FlexRay bus transceiver, described CAN transceiver has CAN arousal function, described LIN transceiver has LIN bus arousal function, and described FlexRay transceiver has FlexRay bus arousal function.
3. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, is characterized in that, described entire car controller also comprises:
Input signal processing circuit, for being connected with described single-chip microcomputer by serial peripheral equipment interface SPI bus, the sampled signal of polytype wake-up signal of outside input is received by wake-up signal Sampling Interface, calculate the magnitude of voltage of described sampled signal, by spi bus, the magnitude of voltage of described sampled signal is transferred to described single-chip microcomputer, judges the duty of described entire car controller to make described single-chip microcomputer according to the magnitude of voltage of described sampled signal and described sampled signal.
4. the entire car controller of the pure electric automobile of integrated gateway function according to claim 3, is characterized in that:
Described input signal processing circuit, also for being connected with described power supply chip by spi bus, when power supply level higher than described single-chip microcomputer of the magnitude of voltage of described sampled signal, by clamp diode, the portion voltage of the permission input level value higher than described single-chip microcomputer in described sampled signal is exported to the output port of described power supply chip; When GND level lower than described single-chip microcomputer of the magnitude of voltage of described sampled signal, by clamp diode, the portion voltage of minimum for the permission lower than described single-chip microcomputer in described sampled signal input level value is exported to GND.
5. the entire car controller of the pure electric automobile of integrated gateway function according to claim 4, is characterized in that, described entire car controller also comprises:
Output signal processing circuit, for being connected with described single-chip microcomputer by serial peripheral equipment interface SPI bus, outside output relay class control signal, resistor-type output signal and LED drive singal.
6. the entire car controller of the pure electric automobile of integrated gateway function according to claim 5, is characterized in that:
Described power supply chip, for comprise three tunnels independently power supply export VDD, VDD1 and VDD2, each road power supply exports all with decoupling capacitor, and described VDD provides power supply for single-chip microcomputer, and described VDD1 and VDD2 provides power supply for external sensor and internal insulation circuit.
7. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, is characterized in that:
Described single-chip microcomputer, also for being provided with the power control signal of described power supply chip, when described single-chip microcomputer work, described power control signal is drawn high, when the outside wake-up signal of described power supply chip all lost efficacy, described power control signal is transferred to described power supply chip by spi bus by described single-chip microcomputer, utilizes described power control signal to be waken up by described power supply chip.
8. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, is characterized in that:
Described single-chip microcomputer, also for being received the program writing to be brushed that CAN transceiver sends over by CAN, or, utilize the program writing to be brushed that on the sheet of single-chip microcomputer, diagnose interface is sended over by cordless communication network reception server, described program writing to be brushed is stored in the storage unit of single-chip microcomputer.
9. the entire car controller of the pure electric automobile of the integrated gateway function according to any one of claim 1 to 7, is characterized in that:
Described power supply chip, for arranging watchdog circuit input interface, described watchdog circuit input interface connects the watchdog circuit output interface of described single-chip microcomputer, when described single-chip microcomputer normally works, described power supply chip receives the watchdog pulse of described single-chip microcomputer output by described watchdog circuit input interface, when described power supply chip interval setting-up time does not receive the watchdog pulse of described single-chip microcomputer output, then judge described single-chip microcomputer operation irregularity.
10. the entire car controller of the pure electric automobile of integrated gateway function according to claim 9, is characterized in that:
Described power supply chip, for arranging reset output interface, this reset output interface connects the reset input interface of described single-chip microcomputer, after described power supply chip judges described single-chip microcomputer operation irregularity, reset signal is exported, by described reset signal by described monolithic processor resetting to described single-chip microcomputer by described reset output interface.
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| CN105216649A (en) * | 2015-11-03 | 2016-01-06 | 成都雅骏新能源汽车科技股份有限公司 | A kind of novel entire car controller being applicable to pure electric automobile |
| CN106274873A (en) * | 2015-06-01 | 2017-01-04 | 莫嘉林 | Automobile brake vacuum pump control circuit |
| CN106406281A (en) * | 2016-10-12 | 2017-02-15 | 成都雅骏新能源汽车科技股份有限公司 | Safety remote control system for electric vehicle, and method thereof |
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| CN113126586A (en) * | 2019-12-30 | 2021-07-16 | 日立汽车系统(苏州）有限公司 | Wake-up diagnostic device and wake-up diagnostic method |
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| CN114701473A (en) * | 2021-12-27 | 2022-07-05 | 瀚德万安(上海)电控制动系统有限公司 | Communication system of electric control brake device |
| CN114510004A (en) * | 2022-01-07 | 2022-05-17 | 卓品智能科技无锡有限公司 | Central gateway controller for optimizing vehicle-mounted network CAN bus |
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